Patent Publication Number: US-2022214717-A1

Title: Data Processing Device

Description:
TECHNICAL FIELD 
     One embodiment of the present invention relates to a data processing device or a semiconductor device. 
     Note that one embodiment of the present invention is not limited to the above technical field. The technical field of one embodiment of the invention disclosed in this specification and the like relates to an object, a method, or a manufacturing method. One embodiment of the present invention relates to a process, a machine, manufacture, or a composition of matter. Thus, more specifically, examples of the technical field of one embodiment of the present invention disclosed in this specification include a semiconductor device, a display device, a light-emitting device, a power storage device, a memory device, a driving method thereof, and a manufacturing method thereof. 
     BACKGROUND ART 
     A data processing device that uses an imaging panel including a substrate with an insulating surface and a plurality of imaging pixels on the insulating surface is known (Patent Document 1). The imaging pixel includes a plurality of windows which are arranged in a matrix and transmit visible light, a photoelectric conversion element having a grid-like formation which extends between the plurality of windows and supplies a signal, and a sensor circuit supplied with the signal. 
     REFERENCE 
     Patent Document 
     
         
         [Patent Document 1] Japanese Published Patent Application No. 2015-005280 
       
    
     SUMMARY OF THE INVENTION 
     Problems to be Solved by the Invention 
     An object of one embodiment of the present invention is to provide a novel data processing device that is highly convenient, useful, or reliable. Another object is to provide a novel data processing device or a novel semiconductor device. 
     Note that the description of these objects does not preclude the existence of other objects. One embodiment of the present invention does not need to achieve all these objects. Objects other than these are apparent from the description of the specification, the drawings, the claims, and the like, and objects other than these can be derived from the description of the specification, the drawings, the claims, and the like. 
     Means for Solving the Problems 
     (1) One embodiment of the present invention is a data processing device including a functional panel, a first surface, a second surface, a third surface, a fourth surface, and a fifth surface. 
     The functional panel includes a region  231 , and the region  231  includes a first region, a second region, a third region, a fourth region, and a fifth region. 
     The second region has a function of performing display in one direction, the third region is positioned between the first region and the second region, and the third region can be bent. The fifth region is positioned between the first region and the fourth region, and the fifth region can be bent. The fourth region has a function of performing display in the one direction in a state where the third region and the fifth region are bent. 
     The first surface includes the first region and a light-emitting element, and the light-emitting element emits light. 
     The second surface includes the second region and a photoelectric conversion element, and the photoelectric conversion element has a function of converting the light into an electric signal. 
     The third surface is positioned between the first surface and the second surface, the third surface can be bent, and the third surface includes the third region. 
     The fourth surface includes the fourth region. 
     The fifth surface is positioned between the first surface and the fourth surface, can be bent, and includes the fifth region. The photoelectric conversion element faces the light-emitting element following the bending of the third surface. 
     Thus, the transmittance of an object placed between the light-emitting element and the photoelectric conversion element with respect to the light emitted from the light-emitting element can be found. A change in the transmittance over time can be found. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (2) Another embodiment of the present invention is the data processing device in which the light includes light with a wavelength greater than or equal to 650 nm and less than or equal to 1000 nm. 
     Thus, the transmittance of a finger or the like with respect to the light emitted from the light-emitting element can be found, for example. A change in bloodstream over time can be found, for example. A pulse rate can be found, for example. Vein distribution can be found, for example. The data processing device can be used for biometric authentication. The data processing device can be used for health care uses. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (3) Another embodiment of the present invention is the data processing device in which the light-emitting element contains a light-emitting organic compound. 
     (4) Another embodiment of the present invention is the data processing device in which the photoelectric conversion element contains fullerene. 
     Thus, part of the components used in the light-emitting element can be used as part of the components of the photoelectric conversion element. For example, a hole-transport layer used in the light-emitting element can be used as a hole-transport layer in the photoelectric conversion element. For example, an electron-transport layer used in the light-emitting element can be used as an electron-transport layer in the photoelectric conversion element. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (5) Another embodiment of the present invention is the data processing device in which the functional panel includes a first driver circuit, a second driver circuit, and the region. 
     The first driver circuit supplies a first selection signal, the second driver circuit supplies a second selection signal and a third selection signal, and the second region includes a first pixel. 
     The first pixel includes a first pixel circuit, the light-emitting element, a second pixel circuit, and the photoelectric conversion element. 
     The first pixel circuit is supplied with the first selection signal, and the first pixel circuit obtains an image signal on the basis of the first selection signal. 
     The light-emitting element is electrically connected to the first pixel circuit, and the light-emitting element emits light in response to the image signal. 
     The second pixel circuit is supplied with the second selection signal and the third selection signal in a period during which the first signal is not supplied, and the second pixel circuit obtains an imaging signal on the basis of the second selection signal. The second pixel circuit supplies the imaging signal on the basis of the third selection signal. 
     The photoelectric conversion element is electrically connected to the second pixel circuit, and the photoelectric conversion element generates the imaging signal. 
     Thus, imaging can be performed in the period during which the first selection signal is not supplied. Noise in imaging can be inhibited. The imaging signal can be read in the period during which the first selection signal is not supplied. Noise in reading can be inhibited. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (6) Another embodiment of the present invention is the data processing device in which the functional panel includes a first conductive film, a second conductive film, a third conductive film, a fourth conductive film, a fifth conductive film, a sixth conductive film, and a seventh conductive film. 
     The first conductive film is supplied with the second selection signal, and the seventh conductive film is supplied with the third selection signal. 
     The second pixel circuit includes a first switch, a second switch, a third switch, a first transistor, a first capacitor, and a first node. The first switch includes a first terminal electrically connected to the photoelectric conversion element and a second terminal electrically connected to the first node, and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the first conductive film. The second switch includes a first terminal electrically connected to the first node and a second terminal electrically connected to the second conductive film, and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the third conductive film. The first capacitor includes a conductive film electrically connected to the first node and a conductive film electrically connected to the fourth conductive film. The first transistor includes a gate electrode electrically connected to the first node and a first electrode electrically connected to the fifth conductive film. The third switch includes a first terminal electrically connected to a second electrode of the first transistor and a second terminal electrically connected to the sixth conductive film, and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the seventh conductive film. 
     Thus, the imaging signal generated by the photoelectric conversion element can be transferred to the first node using the switch. The imaging signal generated by the photoelectric conversion element can be stored in the first node using the switch. Electrical continuity between the pixel circuit and the photoelectric conversion element can be broken using the switch. A correlated double sampling method can be employed. Noise included in the imaging signal can be reduced. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (7) Another embodiment of the present invention is the data processing device in which the functional panel includes an eighth conductive film, a ninth conductive film, a tenth conductive film, an eleventh conductive film, and a twelfth conductive film. 
     The eighth conductive film is supplied with the first selection signal, and the first pixel circuit includes a fourth switch, a fifth switch, a second transistor, a second capacitor, and a second node. The second transistor includes a gate electrode electrically connected to the second node, a first electrode electrically connected to the light-emitting element, and a second electrode electrically connected to the twelfth conductive film. The fourth switch includes a first terminal electrically connected to the second node and a second terminal electrically connected to the tenth conductive film, and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the eighth conductive film. The fifth switch includes a first terminal electrically connected to the eleventh conductive film and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the ninth conductive film. The second capacitor includes a conductive film electrically connected to the second node and a conductive film electrically connected to a second electrode of the fifth switch. 
     Thus, the image signal can be stored in the second node. The potential of the second node can be changed using the switch. The intensity of the light emitted from the light-emitting element can be controlled with the potential of the second node. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (8) Another embodiment of the present invention is the data processing device in which the functional panel includes a reading circuit, a thirteenth conductive film, a fourteenth conductive film, and a fifteenth conductive film. 
     The reading circuit includes an amplifier circuit and a sampling circuit, the amplifier circuit includes a third transistor, and the third transistor includes a gate electrode electrically connected to the thirteenth conductive film, a first electrode electrically connected to the sixth conductive film(j), and a second electrode electrically connected to the fourteenth conductive film. The sampling circuit includes a first terminal, a second terminal, and a third terminal, the first terminal is electrically connected to the sixth conductive film, the second terminal is electrically connected to the fifteenth conductive film, and the third terminal has a function of supplying a signal that changes on the basis of the potential of the first terminal. 
     Thus, an imaging signal can be obtained from the pixel circuit. A correlated double sampling method can be employed, for example. The sampling circuit can be provided for each conductive film. A differential signal of the pixel circuit can be obtained by the corresponding conductive film. The operating frequency of the sampling circuit can be low. Noise can be reduced. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (9) Another embodiment of the present invention is the data processing device in which the functional panel includes a functional layer. The functional layer includes the first pixel circuit and the second pixel circuit. 
     Thus, for example, a semiconductor film used in the second pixel circuit can be formed in the step of forming the semiconductor film used in the first pixel circuit. The manufacturing process can be simplified. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (10) Another embodiment of the present invention is the data processing device in which the region includes a group of pixels and a different group of pixels. 
     The group of pixels is arranged in a row direction, the group of pixels includes the first pixel, the group of pixels is electrically connected to the eighth conductive film, and the group of pixels is electrically connected to the first conductive film. 
     The different group of pixels is arranged in a column direction intersecting the row direction, the different group of pixels includes the first pixel, the different group of pixels is electrically connected to the tenth conductive film, and the different group of pixels is electrically connected to the sixth conductive film. 
     Thus, imaging data can be obtained from a plurality of pixels. Image data can be supplied to a plurality of pixels. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (11) Another embodiment of the present invention is the data processing device in which the first region includes a second pixel. The second pixel includes the light-emitting element. 
     (12) Another embodiment of the present invention is the data processing device further including a control portion. 
     The control portion is supplied with image data and control data, the control portion generates data on the basis of the image data, the control portion generates a control signal on the basis of the control data, and the control portion supplies the data and the control signal. 
     The functional panel is supplied with the data and the control data, the first pixel emits light on the basis of the data, and the second pixel emits light on the basis of the data. 
     Thus, the image data can be displayed using the light-emitting element. Thus, a novel display device that is highly convenient, useful, or reliable can be provided. 
     (13) Another embodiment of the present invention is the data processing device further including an input portion and a display portion. 
     The display portion includes the functional panel, the input portion includes a sensing region, the input portion senses an object approaching the sensing region, and the sensing region includes a region overlapping with the first pixel. 
     Thus, the object approaching the region overlapping with the display portion can be sensed while image data is displayed using the display portion. A finger or the like that approaches the display portion can be used as a pointer to input position data. Position data can be associated with image data displayed on the display portion. Thus, a novel input/output device that is highly convenient, useful, or reliable can be provided. 
     (14) Another embodiment of the present invention is the data processing device further including an arithmetic device and an input/output device. 
     The arithmetic device is supplied with input data or sensing data, the arithmetic device generates control data and image data on the basis of the input data or the sensing data, and the arithmetic device supplies the control data and the image data. 
     The input/output device supplies the input data and the sensing data, the input/output device is supplied with the control data and the image data, and the input/output device includes a display portion, an input portion, and a sensing portion. The display portion includes the functional panel, the display portion displays the image data on the basis of the control data, the input portion generates the input data, and the sensing portion generates the sensing data. 
     Thus, the control data can be generated on the basis of the input data or the sensing data. The image data can be displayed on the basis of the input data or the sensing data. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     (15) Another embodiment of the present invention is the data processing device further including one or more of a keyboard, a hardware button, a pointing device, a touch sensor, an illuminance sensor, an imaging device, an audio input device, an eye-gaze input device, and an attitude detection device. 
     Thus, the arithmetic device can generate the image data or the control data on the basis of the data supplied using a variety of input devices. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Effect of the Invention 
     According to one embodiment of the present invention, a novel data processing device that is highly convenient, useful, or reliable can be provided. A novel data processing device or a novel semiconductor device can be provided. 
     Note that the description of these effects does not preclude the existence of other effects. One embodiment of the present invention does not need to have all of these effects. Note that effects other than these are apparent from the description of the specification, the drawings, the claims, and the like and effects other than these can be derived from the description of the specification, the drawings, the claims, and the like. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  to  FIG. 1C  are diagrams illustrating a structure of a data processing device of an embodiment. 
         FIG. 2A  and  FIG. 2B  are diagrams illustrating a structure of a data processing device of an embodiment, and  FIG. 2C  and  FIG. 2D  are diagrams illustrating a structure of a pixel of the data processing device of the embodiment. 
         FIG. 3A  to  FIG. 3C  are block diagrams illustrating a structure of a functional panel of an embodiment. 
         FIG. 4A  to  FIG. 4C  are circuit diagrams illustrating a structure of a functional panel of an embodiment. 
         FIG. 5  is a circuit diagram illustrating a structure of a functional panel of an embodiment. 
         FIG. 6  is a diagram showing an operation of a functional panel of an embodiment. 
         FIG. 7A  to  FIG. 7C  are diagrams illustrating a structure of a functional panel of an embodiment. 
         FIG. 8  is a cross-sectional view illustrating a structure of a functional panel of an embodiment. 
         FIG. 9A  and  FIG. 9B  are cross-sectional views illustrating a structure of a functional panel of an embodiment. 
         FIG. 10A  and  FIG. 10B  are cross-sectional views illustrating a structure of a functional panel of an embodiment. 
         FIG. 11A  and  FIG. 11B  are cross-sectional views illustrating a structure of a functional panel of an embodiment. 
         FIG. 12A  to  FIG. 12D  are diagrams illustrating structures of a display device of an embodiment. 
         FIG. 13  is a block diagram illustrating a structure of an input/output device of an embodiment. 
         FIG. 14A  to  FIG. 14C  are diagrams illustrating structures of a data processing device of an embodiment. 
         FIG. 15A  and  FIG. 15B  are flow charts showing a method for driving a data processing device of an embodiment. 
         FIG. 16A  to  FIG. 16C  are diagrams showing a method for driving a data processing device of an embodiment. 
         FIG. 17A  to  FIG. 17C  are diagrams showing a method for driving a data processing device of an embodiment. 
         FIG. 18A  to  FIG. 18E  are diagrams illustrating structures of a data processing device of an embodiment. 
         FIG. 19A  to  FIG. 19E  are diagrams illustrating structures of a data processing device of an embodiment. 
         FIG. 20A  and  FIG. 20B  are diagrams illustrating structures of a data processing device of an embodiment. 
         FIG. 21  is a diagram illustrating a structure of a data processing device of an embodiment. 
         FIG. 22A  to  FIG. 22C  are diagrams illustrating a structure of a data processing device of an embodiment. 
         FIG. 23A  and  FIG. 23B  are diagrams illustrating a structure of a data processing device of an embodiment, and  FIG. 23C  and  FIG. 23D  are diagrams illustrating a structure of a pixel of the data processing device of an embodiment. 
     
    
    
     MODE FOR CARRYING OUT THE INVENTION 
     A data processing device of one embodiment of the present invention includes a functional panel, a first surface, a second surface, a third surface, a fourth surface, and a fifth surface. The functional panel includes a first region to a fifth region. The second region performs display in one direction. The third region is positioned between the first region and the second region and can be bent. The fifth region is positioned between the first region and the fourth region and can be bent. The fourth region has a function of performing display in one direction in a state where the third region and the fifth region are bent. The first surface includes the first region and a light-emitting element. The light-emitting element emits light. The second surface includes the second region and a photoelectric conversion element. The photoelectric conversion element converts the light into an electric signal. The third surface is positioned between the first surface and the second surface, can be bent, and includes the third region. The fourth surface includes the fourth region. The fifth surface is positioned between the first surface and the fourth surface, can be bent, and includes the fifth region. The photoelectric conversion element faces the light-emitting element following the bending of the third surface. 
     Thus, the transmittance of an object placed between the light-emitting element and the photoelectric conversion element with respect to the light emitted from the light-emitting element can be found. A change in the transmittance over time can be found. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Embodiments are described in detail with reference to the drawings. Note that the present invention is not limited to the following description, and it will be readily appreciated by those skilled in the art that modes and details of the present invention can be modified in various ways without departing from the spirit and scope of the present invention. Thus, the present invention should not be construed as being limited to the description in the following embodiments. Note that in structures of the invention described below, the same portions or portions having similar functions are denoted by the same reference numerals in different drawings, and a description thereof is not repeated. 
     Embodiment 1 
     In this embodiment, a structure of a data processing device of one embodiment of the present invention is described with reference to  FIG. 1  and  FIG. 2 . 
       FIG. 1  illustrates the structure of the data processing device of one embodiment of the present invention.  FIG. 1A  is a diagram illustrating a state where the data processing device of one embodiment of the present invention is opened, and  FIG. 1B  and  FIG. 1C  are diagrams each illustrating a state where the data processing device in  FIG. 1A  is partly bent. 
       FIG. 2A  is a diagram illustrating a state where the data processing device of one embodiment of the present invention is partly bent and a finger is put into a space, and  FIG. 2B  is a diagram illustrating the state from a different angle from  FIG. 2A .  FIG. 2C  and  FIG. 2D  are diagrams illustrating a structure of a pixel of the data processing device of one embodiment of the present invention. 
     Note that in this specification, an integer variable of 1 or more is sometimes used in reference numerals. For example, (p) where p is an integer variable of 1 or more is sometimes used in part of a reference numeral that specifies any of p components at a maximum. As another example, (m,n) where m and n are each an integer variable of 1 or more is sometimes used in part of a reference numeral that specifies any of m×n components at a maximum. 
     Structure Example 1 of Data Processing Device 
     The data processing device described in this embodiment includes a functional panel  700 , a surface  210 ( 1 ), a surface  210 ( 2 ), a surface  210 ( 3 ), a surface  210 ( 4 ), and a surface  210 ( 5 ) (see  FIG. 1A ). 
     Structure Example of Functional Panel  700   
     The functional panel  700  includes a region  231 . The region  231  includes a region  231 ( 1 ), a region  231 ( 2 ), a region  231 ( 3 ), a region  231 ( 4 ), and a fifth region  231 ( 5 ). Note that the region  231 ( 2 ) has a function of performing display in one direction (for example, a direction indicated by an arrow Z in the diagram). 
     The region  231 ( 3 ) is positioned between the region  231 ( 1 ) and the region  231 ( 2 ), and the region  231 ( 3 ) can be bent (see  FIG. 1B  and  FIG. 1C ). 
     The region  231 ( 5 ) is positioned between the region  231 ( 1 ) and the region  231 ( 4 ), and the region  231 ( 5 ) can be bent. 
     The region  231 ( 4 ) has a function of performing display in one direction (for example, a direction indicated by the arrow Z in the diagram) in a state where the region  231 ( 3 ) and the region  231 ( 5 ) are bent (see  FIG. 1C ). 
     Structure Example of Surface  210 ( 1 ) to Surface  210 ( 5 ) 
     The surface  210 ( 1 ) includes the region  231 ( 1 ) and a light-emitting element  550 ( 1 ). Note that the light-emitting element  550 ( 1 ) emits light h 1  (see  FIG. 1A ). 
     The surface  210 ( 2 ) includes the region  231 ( 2 ) and a photoelectric conversion element PD( 2 ). 
     The surface  210 ( 3 ) is positioned between the surface  210 ( 1 ) and the surface  210 ( 2 ), and the surface  210 ( 3 ) can be bent (see  FIG. 1B  and  FIG. 1C ). In addition, the surface  210 ( 3 ) includes the region  231 ( 3 ). 
     The surface  210 ( 4 ) includes the region  231 ( 4 ). 
     The surface  210 ( 5 ) is positioned between the surface  210 ( 1 ) and the surface  210 ( 4 ), and the surface  210 ( 5 ) can be bent. In addition, the surface  210 ( 5 ) includes the region  231 ( 5 ). 
     Structure Example 1 of Photoelectric Conversion Element PD( 2 ) 
     The photoelectric conversion element PD( 2 ) has a function of converting the light h 1  into an electric signal. The photoelectric conversion element PD( 2 ) faces the light-emitting element  550 ( 1 ) following the bending of the surface  210 ( 3 ) (see  FIG. 1C ,  FIG. 2A , and  FIG. 2B ). 
     Thus, the transmittance of an object placed between the light-emitting element  550 ( 1 ) and the photoelectric conversion element PD( 2 ) with respect to the light emitted from the light-emitting element  550 ( 1 ) can be found. A change in the transmittance over time can be found. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Structure Example 1 of Light-Emitting Element  550 ( 1 ) 
     The light h 1  includes light with a wavelength greater than or equal to 650 nm and less than or equal to 1000 nm. For example, a light-emitting element that emits light with a wavelength greater than or equal to 400 nm and less than or equal to 1000 nm can be used. 
     Thus, the transmittance of a finger or the like with respect to the light emitted from the light-emitting element  550 ( 1 ) can be found, for example. A change in bloodstream over time can be found, for example. A pulse rate can be found, for example. Vein distribution can be found, for example. The data processing device can be used for biometric authentication. The data processing device can be used for health care uses. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Structure Example 2 of Light-Emitting Element  550 ( 1 ) 
     The light-emitting element  550 ( 1 ) contains a light-emitting material. For example, a light-emitting organic compound can be used for the light-emitting element  550 ( 1 ). Specifically, the light-emitting element  550 ( 1 ) includes a light-emitting unit. The light-emitting unit includes one region where electrons injected from one side are recombined with holes injected from the other side. The light-emitting unit contains a light-emitting material, and the light-emitting material releases energy generated by recombination of electrons and holes as light. Note that a hole-transport layer and an electron-transport layer can be used in the light-emitting unit. The hole-transport layer is positioned closer to the positive electrode than the electron-transport layer is, and the hole-transport layer has higher hole mobility than the electron-transport layer. The light-emitting material, the hole-transport layer, and the electron-transport layer can be used in the light-emitting element  550 . 
     Structure Example 2 of Photoelectric Conversion Element PD( 2 ) 
     The photoelectric conversion element PD( 2 ) contains a photoelectric conversion material. For example, fullerene can be used for the photoelectric conversion element PD( 2 ). Alternatively, for example, an electron-accepting material and an electron-donating material can be used as the photoelectric conversion material. Alternatively, a stacked film of an electron-accepting material and an electron-donating material can be used as the photoelectric conversion material. Alternatively, a mixed film of an electron-accepting material and an electron-donating material can be used as the photoelectric conversion material. Alternatively, a bulk heterojunction film of an electron-accepting material and an electron-donating material can be used as the photoelectric conversion material. Specifically, a film formed by co-evaporation of an electron-accepting material and an electron-donating material can be used as a photoelectric conversion layer. A phthalocyanine derivative can be used as the electron-donating material and a fullerene derivative or the like can be used as the electron acceptor, for example. Specifically, a photoelectric conversion layer, a hole-transport layer, and an electron-transport layer can be used in the photoelectric conversion element PD( 2 ). The photoelectric conversion layer is sandwiched between the hole-transport layer and the electron-transport layer, and the photoelectric conversion layer contains the photoelectric conversion material. Note that a hole-transport layer that can be used in the light-emitting element  550 ( 1 ) can be used in the photoelectric conversion element PD( 2 ), for example. Alternatively, an electron-transport layer that can be used in the light-emitting element  550 ( 1 ) can be used in the photoelectric conversion element PD( 2 ). Alternatively, hole-transport layers that can be formed in the same step can be used in the light-emitting element  550 ( 1 ) and the photoelectric conversion element PD( 2 ). Alternatively, electron-transport layers that can be formed in the same step can be used in the light-emitting element  550 ( 1 ) and the photoelectric conversion element PD( 2 ). 
     Thus, part of the components used in the light-emitting element  550 ( 1 ) can be used as part of the components of the photoelectric conversion element PD( 2 ). For example, the hole-transport layer used in the light-emitting element  550 ( 1 ) can be used as the hole-transport layer in the photoelectric conversion element PD( 2 ). For example, the electron-transport layer used in the light-emitting element  550 ( 1 ) can be used as the electron-transport layer in the photoelectric conversion element PD( 2 ). Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Structure Example 2 of Data Processing Device 
     In this embodiment, a structure of a data processing device of one embodiment of the present invention is described with reference to  FIG. 22  and  FIG. 23 . 
       FIG. 22  illustrates a structure of the data processing device of one embodiment of the present invention.  FIG. 22A  is a diagram illustrating a state where the data processing device of one embodiment of the present invention is opened, and  FIG. 22B  and  FIG. 22C  are diagrams each illustrating a state where the data processing device illustrated in  FIG. 22A  is partly bent. 
       FIG. 23A  is a diagram illustrating a state where the data processing device of one embodiment of the present invention is partly bent and a finger is put into a space, and  FIG. 23B  is a diagram illustrating the state from a different angle from  FIG. 23A .  FIG. 23C  and  FIG. 23D  are diagrams illustrating a structure of a pixel of the data processing device of one embodiment of the present invention. 
     The data processing device illustrated in  FIG. 22  and  FIG. 23  is different from the data processing device illustrated in  FIG. 1  and  FIG. 2  in that the region  231 ( 5 ) is not provided between the region  231 ( 1 ) and the region  231 ( 4 ). 
     Note that this embodiment can be combined with any of the other embodiments in this specification as appropriate. 
     Embodiment 2 
     In this embodiment, structures of a functional panel that can be used for the data processing device of one embodiment of the present invention will be described with reference to  FIG. 3  to  FIG. 6 . 
       FIG. 3  illustrates a structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 3A  is a block diagram of the functional panel, and  FIG. 3B  and  FIG. 3C  are diagrams illustrating part of  FIG. 3A . 
       FIG. 4  illustrates a structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 4A  is a circuit diagram illustrating a pixel circuit  530 S(j) of the functional panel.  FIG. 4B  is a circuit diagram illustrating part of an amplifier circuit of the functional panel.  FIG. 4C  is a circuit diagram illustrating part of a sampling circuit SC(j) of the functional panel. 
       FIG. 5  is a diagram illustrating a structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 5  is a circuit diagram of a pixel circuit  530 G(i/j) of the functional panel. 
       FIG. 6  is a diagram illustrating an operation of the functional panel that can be used for the data processing device of one embodiment of the present invention. 
     Structure Example 1 of Functional Panel 
     The functional panel described in this embodiment includes a driver circuit GD, a driver circuit RD, and a display region  231  (see  FIG. 3A ). Note that the region  231  includes the region  231 ( 2 ) (see  FIG. 1A ). 
     The driver circuit GD supplies the first selection signal, the driver circuit RD supplies the second selection signal and the third selection signal, and the region  231 ( 2 ) includes a pixel  703 ( i,j ). 
     Structure Example 1 of Pixel  703 ( i,j ) 
     The pixel  703 ( i,j ) includes the pixel circuit  530 G(i,j), a light-emitting element  550 G(i,j), the pixel circuit  530 S(i,j), and a photoelectric conversion element PD(i,j) (see  FIG. 3B  and  FIG. 3C ). 
     Structure Example 1 of Pixel Circuit  530 G(i,j) 
     The pixel circuit  530 G(i j ) is supplied with the first selection signal and the pixel circuit  530 G(i j ) obtains an image signal on the basis of the first selection signal. For example, the first selection signal can be supplied using a conductive film G 1 ( i ) (see  FIG. 3B ). The image signal can be supplied using a conductive film S 1   g ( j ). 
     Note that the operation of supplying the first selection signal and making the pixel circuit  530 G(i,j) obtain the image signal can be referred to as “writing” (see  FIG. 6 ). 
     Structure Example 1 of Light-Emitting Element  550 G(i,j) 
     The light-emitting element  550 G(i,j) is electrically connected to the pixel circuit  530 G(i,j), and the light-emitting element  550 G(i,j) emits light on the basis of the image signal (see  FIG. 3B  and  FIG. 3C ). 
     Note that the light-emitting element  550 G(i,j) includes an electrode  551 G(i,j) electrically connected to the pixel circuit  530 G(i,j) and an electrode  552  electrically connected to a conductive film VCOM 2  (see  FIG. 5  and  FIG. 10A ). 
     Structure Example 1 of Pixel Circuit  530 S(i,j) 
     The pixel circuit  530 S(i,j) is supplied with the second selection signal and the third selection signal in a period during which the first selection signal is not supplied (see  FIG. 6 ). In addition, the pixel circuit  530 S(i,j) obtains an imaging signal on the basis of the second selection signal, and supplies the imaging signal on the basis of the third selection signal. For example, the second selection signal can be supplied using a conductive film TX(i), and the third selection signal can be supplied using a conductive film SE(i) (see  FIG. 3B  and  FIG. 4A ). 
     Note that the operation of supplying the second selection signal and making the pixel circuit  530 S(i,j) obtain an imaging signal can be referred to as “imaging” (see  FIG. 6 ). The operation of reading an imaging signal from the pixel circuit  530 S(i,j) can be referred to as “reading”. The operation of supplying a predetermined voltage to the photoelectric conversion element PD(i,j) can be referred to as “initialization”, the operation of exposing the initialized photoelectric conversion element PD(i,j) to light in a predetermined period as “light exposure”, and the operation of reflecting a voltage that has been changed along with the light exposure on the pixel circuit  530 S(i,j) as “transfer”. Moreover, in the figure, SRS corresponds to the operation of supplying a reference signal used in a correlated double sampling method, and “output” corresponds to the operation of supplying an imaging signal. 
     For example, image data for one frame can be written in 16.7 ms. Specifically, the operation can be performed at a frame rate of 60 Hz. Note that an image signal can be written to the pixel circuit  530 G(i,j) in 15.2 μs. 
     For example, image data of one frame can be held in a period corresponding to 16 frames. Imaging data of one frame can be imaged and read in a period corresponding to 16 frames. 
     Specifically, it is possible to perform the initialization in 15 μs, the light exposure in a period from 1 ms to 5 ms, and the transfer in 150 μs. Moreover, the reading can be performed in 250 ms. 
     Structure Example 1 of Photoelectric Conversion Element PD(i,j) 
     The photoelectric conversion element PD(i,j) is electrically connected to the pixel circuit  530 S(i,j), and the photoelectric conversion element PD(i,j) generates the imaging signal. For example, the photoelectric conversion element PD( 2 ) described in Embodiment 1 can be used as the photoelectric conversion element PD(i,j). 
     Thus, imaging can be performed in a period during which the first selection signal is not supplied. Noise in imaging can be inhibited. An imaging signal can be read in a period during which the first selection signal is not supplied. Noise in reading can be inhibited. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     The photoelectric conversion element PD(i,j) includes an electrode  551 S(i,j) electrically connected to the pixel circuit  530 S(i,j) and the electrode  552  electrically connected to a conductive film VPD (see  FIG. 4A  and  FIG. 9A ). The electrode  552  used in the light-emitting element  550 G(i,j) can be used in the photoelectric conversion element PD(i,j). In this manner, the structure and the manufacturing process of the functional panel can be simplified. 
     Structure Example 2 of Pixel  703 ( i,j ) 
     A plurality of pixels can be used in the pixel  703 ( i,j ). For example, a plurality of pixels capable of displaying colors with different hues can be used. Note that a plurality of pixels can be referred to as subpixels. A set of subpixels can be referred to as a pixel. 
     This enables additive mixture or subtractive mixture of colors displayed by the plurality of pixels. It is possible to display a color of a hue that an individual pixel cannot display. 
     Specifically, a pixel  702 B(i,j) displaying blue, a pixel  702 G(i,j) displaying green, and a pixel  702 R(i,j) displaying red can be used in the pixel  703 ( i,j ). The pixel  702 B(i,j), the pixel  702 G(i,j), and the pixel  702 R(i,j) can each be referred to as a subpixel (see  FIG. 7B ). 
     A pixel displaying white or the like can be used in addition to the above set in the pixel  703 ( i,j ), for example. Alternatively, a pixel displaying cyan, a pixel displaying magenta, and a pixel displaying yellow can be used in the pixel  703 ( i,j ). 
     A pixel emitting infrared rays can be used in addition to the above set in the pixel  703 ( g,h ), for example (see  FIG. 7C ). Specifically, a pixel  702 N(g,h) emitting light including light with a wavelength greater than or equal to 650 nm and less than or equal to 1000 nm can be used in the pixel  703 ( g,h ). 
     Structure Example 3 of Pixel  703 ( i,j ) 
     The pixel  703 ( i,j ) is supplied with the second selection signal in a period during which the pixel  703 ( i,j ) holds one image signal. For example, in a period during which the pixel circuit  530 G(i,j) holds one image signal, the pixel  703 ( i,j ) can emit light using the light-emitting element  550 G(i,j) on the basis of the image signal (see  FIG. 6 ). The pixel circuit  530 S(i,j) is supplied with the second selection signal after obtaining one image signal on the basis of the first selection signal by the time when the pixel circuit  530 G(i,j) is supplied with the first selection signal again. 
     Thus, the intensity of light emitted from the light-emitting element  550 G(i,j) can be controlled using the image signal. Light having a controlled intensity can be emitted to an object. The object can be imaged using the photoelectric conversion element PD(i,j). The object can be imaged using the photoelectric conversion element PD(i,j) while the intensity of emitted light is controlled. The influence of a change from one image signal to another image signal held in the pixel circuit  530 G(i,j) on an imaging signal can be eliminated. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Structure Example 4 of Pixel  703 ( i,j ) 
     The pixel  703 ( i,j ) is supplied with the third selection signal in a period during which the pixel  703 ( i,j ) holds one image signal. For example, the pixel circuit  530 G(i,j) obtains one image signal on the basis of the first selection signal, and is supplied with the second selection signal by the time when the pixel circuit  530 S(i,j) is supplied with the first selection signal again (see  FIG. 6 ). 
     Thus, the influence of a change from one image signal to another image signal held in the pixel circuit  530 G(i,j) on an imaging signal can be eliminated. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Structure Example 2 of Functional Panel 
     The functional panel of one embodiment of the present invention includes the conductive film TX(i), a conductive film VR, a conductive film RS(i), a conductive film VCP, a conductive film VPI, a conductive film WX(j), and the conductive film SE(i) (see  FIG. 4A ). The conductive film TX(i) is supplied with the second selection signal, and the conductive film 
     SE(i) is supplied with the third selection signal. 
     Structure Example 2 of Pixel Circuit  530 S(i,j) 
     The pixel circuit  530 S(i,j) includes a switch SW 31 , a switch SW 32 , a switch SW 33 , a transistor M 31 , a capacitor C 31 , and a node FD. 
     The switch SW 31  includes a first terminal electrically connected to the photoelectric conversion element PD(i,j) and a second terminal electrically connected to the node FD, and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the conductive film TX(i). 
     The switch SW 32  includes a first terminal electrically connected to the node FD and a second terminal electrically connected to the conductive film VR, and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the conductive film RS(i). 
     The capacitor C 31  includes a conductive film electrically connected to the node FD and a conductive film electrically connected to the conductive film VCP. 
     The transistor M 31  includes a gate electrode electrically connected to the node FD and a first electrode electrically connected to the conductive film VPI. 
     The switch SW 33  includes a first terminal electrically connected to a second electrode of the transistor M 31  and a second terminal electrically connected to the conductive film WX(j), and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the wiring SE(i). 
     Thus, the imaging signal generated by the photoelectric conversion element PD(i,j) can be transferred to the node FD using the switch SW 31 . The imaging signal generated by the photoelectric conversion element PD(i,j) can be stored in the node FD using the switch SW 31 . Electrical continuity between the pixel circuit  530 S(i,j) and the photoelectric conversion element PD(i,j) can be broken using the switch SW 31 . A correlated double sampling method can be employed. Noise included in the imaging signal can be reduced. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Structure Example 3 of Functional Panel 
     The functional panel that can be used for the data processing device of one embodiment of the present invention includes the conductive film G 1 ( i ), a conductive film G 2 ( i ), the conductive film S 1   g ( j ), a conductive film S 1   g ( j ), and a conductive film ANO (see  FIG. 5 ). The conductive film G 1 ( i ) is supplied with the first selection signal. For example, the image signal can be supplied using the conductive film S 1   g ( i ). A signal supplied using the conductive film S 1   g ( j ) can be added to the signal supplied using the conductive film S 1   g ( j ). Note that for example, the image signal can be supplied using the conductive film S 1   g ( j ) in 15.2 μs or supplied using the conductive film S 1   g ( j ) and the conductive film S 1   g ( j ) in 30.4 μs. 
     Structure Example 2 of Pixel Circuit  530 G(i,j) 
     The pixel circuit  530 G(i,j) includes a switch SW 21 , a switch SW 22 , a transistor M 21 , a capacitor C 21 , and a node N 21 . 
     The transistor M 21  includes a gate electrode electrically connected to the node N 21 , a first electrode electrically connected to the light-emitting element  550 G(i,j), and a second electrode electrically connected to the conductive film ANO. 
     The switch SW 21  includes a first terminal electrically connected to the node N 21  and a second terminal electrically connected to the conductive film S 1   g ( j ), and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the conductive film G 1 ( i ). 
     The switch SW 22  includes a first terminal electrically connected to the conductive film S 1   g ( j ), and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the conductive film G 2 ( i ). 
     The capacitor C 21  includes a conductive film electrically connected to the node N 21  and a conductive film electrically connected to a second electrode of the switch SW 22 . 
     Thus, the image signal can be stored in the node N 21 . The potential of the node N 21  can be changed using the switch SW 22 . The intensity of light emitted from the light-emitting element  550 G(i,j) can be controlled with the potential of the node N 21 . Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Structure Example 4 of Functional Panel 
     The functional panel that can be used for the data processing device of one embodiment of the present invention includes a conductive film V 0  (see  FIG. 5 ). 
     Structure Example 3 of Pixel Circuit  530 G(i,j) 
     The pixel circuit  530 G(i,j) includes a switch SW 23 , a node N 22 , and a capacitor C 22 . 
     The switch SW 23  includes a first terminal electrically connected to the conductive film V 0  and a second terminal electrically connected to the node N 22 , and has a function of controlling the conduction state or the non-conduction state on the basis of the potential of the conductive film G 2 ( i ). 
     The capacitor C 22  includes a conductive film electrically connected to the node N 21  and a conductive film electrically connected to the node N 22 . 
     Note that the first electrode of the transistor M 21  is electrically connected to the node N 22 . 
     Structure Example 5 of Functional Panel 
     The functional panel that can be used for the data processing device of one embodiment of the present invention includes a reading circuit RC(j), a conductive film VLEN, a conductive film VIV, and a conductive film CL (see  FIG. 3A ,  FIG. 4A ,  FIG. 4B , and  FIG. 4C ). 
     Structure Example of Reading Circuit RC(j) 
     The reading circuit RC(j) includes an amplifier circuit and the sampling circuit SC(j) (see  FIG. 3A ). 
     Structure Example of Amplifier Circuit 
     The amplifier circuit includes a transistor M 32 ( j ) (see  FIG. 4B ). 
     The transistor M 32 ( j ) includes a gate electrode electrically connected to the conductive film VLEN, a first electrode electrically connected to the conductive film WX(j), and a second electrode electrically connected to the conductive film VIV. 
     Note that the conductive film WX(j) connects the transistor M 31 ( j ) and the transistor M 32 ( j ) when the switch SW 33  is in an on state (see  FIG. 4A  and  FIG. 4B ). Thus, a source follower circuit can be configured with the transistor M 31 ( j ) and the transistor M 32 ( j ). The potential of the conductive film WX(j) can be changed on the basis of the potential of the node FD. 
     Structure Example of Sampling Circuit SC(j) 
     The sampling circuit SC(j) includes a first terminal IN(j), a second terminal, and a third terminal OUT(j) (see  FIG. 4C ). 
     The first terminal is electrically connected to the conductive film WX(j), the second terminal is electrically connected to the conductive film CL, and the third terminal OUT(j) has a function of supplying a signal that changes on the basis of the potential of the first terminal IN(j). 
     Thus, an imaging signal can be obtained from the pixel circuit  530 S(i,j). A correlated double sampling method can be employed, for example. The sampling circuit SC(j) can be provided for each conductive film WX(j). A differential signal of the pixel circuit  530 S(i,j) can be obtained by the corresponding conductive film WX(j). The operating frequency of the sampling circuit SC(j) can be low. Noise can be reduced. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Note that this embodiment can be combined with any of the other embodiments in this specification as appropriate. 
     Embodiment 3 
     In this embodiment, a structure of the functional panel that can be used for the data processing device of one embodiment of the present invention will be described with reference to  FIG. 7  to  FIG. 11 . 
       FIG. 7  illustrates a structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 7A  is a top view illustrating the structure of the functional panel,  FIG. 7B  is a diagram illustrating part of  FIG. 7A , and  FIG. 7C  is a diagram illustrating another part of  FIG. 7A . 
       FIG. 8  is a diagram illustrating the structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 8  is a cross-sectional view along cutting lines X 1 -X 2 , X 3 -X 4 , X 9 -X 10 , and X 11 -X 12  in  FIG. 7A  and in a pixel. 
       FIG. 9  illustrates the structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 9A  is a cross-sectional view of a pixel  702 S(i,j) illustrated in  FIG. 7B . 
       FIG. 10  illustrates the structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 10A  is a cross-sectional view of the pixel  702 G(i,j) illustrated in  FIG. 7B . 
       FIG. 11  illustrates the structure of the functional panel that can be used for the data processing device of one embodiment of the present invention.  FIG. 11A  is a cross-sectional view along the cutting line X 1 -X 2  and the cutting line X 3 -X 4  in  FIG. 7A , and  FIG. 11B  is a diagram illustrating part of  FIG. 11A . 
     Structure Example 6 of Functional Panel 
     The functional panel that can be used for the data processing device of one embodiment of the present invention includes a functional layer  520  (see  FIG. 8 ). 
     Structure Example 1 of Functional Layer  520   
     The functional layer  520  includes the pixel circuit  530 G(i,j) and the pixel circuit  530 S(i,j). The functional layer  520  includes an opening portion  591 G and an opening portion  591 S. 
     The pixel circuit  530 G(i,j)G is electrically connected to the light-emitting element  550 G(i,j) through the opening portion  591 G (see  FIG. 8 ). The pixel circuit  530 S(i,j) is electrically connected to the photoelectric conversion element PD(i,j) through the opening portion  591 S. 
     The functional layer  520  includes, for example, the transistor M 21  used in the pixel circuit  530 G(i,j) (see  FIG. 5  and  FIG. 10A ). The functional layer  520  includes a transistor used as the switch SW 31  in the pixel circuit  530 S(i,j) (see  FIG. 4A  and  FIG. 9A ). 
     Thus, the pixel circuit  530 G(i,j) and the pixel circuit  530 S(i,j) can be formed in the functional layer  520 . For example, a semiconductor film used in the pixel circuit  530 S(i,j) can be formed in the step of forming the semiconductor film used in the pixel circuit  530 G(i,j). The manufacturing process of the functional panel can be simplified. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     The functional layer  520  includes the driver circuit GD (see  FIG. 7A  and  FIG. 8 ). The functional layer  520  includes a transistor MD used in the driver circuit GD, for example (see  FIG. 8 ,  FIG. 11A , and  FIG. 11B ). Furthermore, the functional layer  520  includes the driver circuit RD and the reading circuit RC (see  FIG. 8 ). 
     Thus, semiconductor films used in the driver circuit GD, the driver circuit RD, and the reading circuit RC can be formed in the step of forming the semiconductor film used in the pixel circuit  530 G(i,j). The manufacturing process of the functional panel can be simplified. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Structure Example 4 of Pixel Circuit  530 G(i,j) 
     A bottom-gate transistor, a top-gate transistor, or the like can be used in the pixel circuit  530 G(i,j), for example. Specifically, a transistor can be used as a switch. 
     Structure Example 3 of Pixel Circuit  530 S(i,j) 
     A bottom-gate transistor, a top-gate transistor, or the like can be used in the pixel circuit  530 S(i,j), for example. Specifically, a transistor can be used as a switch. 
     Structure Example of Transistor 
     The transistor includes a semiconductor film  508 , a conductive film  504 , a conductive film  512 A, and a conductive film  512 B (see  FIG. 10B ). Alternatively, the transistor includes a conductive film  512 C and a conductive film  512 D (see  FIG. 11B ). Alternatively, the transistor includes a conductive film  512 E and a conductive film  512 F (see  FIG. 9B ). 
     The semiconductor film  508  includes a region  508 A electrically connected to the conductive film  512 A and a region  508 B electrically connected to the conductive film  512 B. 
     The semiconductor film  508  includes a region  508 C between the region  508 A and the region  508 B. 
     The conductive film  504  includes a region overlapping with the region  508 C, and the conductive film  504  has a function of a gate electrode. 
     An insulating film  506  includes a region interposed between the semiconductor film  508  and the conductive film  504 . The insulating film  506  has a function of a gate insulating film. 
     The conductive film  512 A has one of a function of a source electrode and a function of a drain electrode, and the conductive film  512 B has the other of the function of the source electrode and the function of the drain electrode. 
     A conductive film  524  can be used in the transistor. The semiconductor film  508  is interposed between a region of the conductive film  524  and the conductive film  504 . The conductive film  524  has a function of a second gate electrode. 
     Note that in a process of forming the semiconductor film used in the transistor of the pixel circuit, the semiconductor film used in the transistor of the driver circuit can be formed. 
     Structure Example 1 of Semiconductor Film  508   
     A semiconductor containing a Group 14 element can be used for the semiconductor film  508 , for example. Specifically, a semiconductor containing silicon can be used for the semiconductor film  508 . 
     Hydrogenated Amorphous Silicon 
     For example, hydrogenated amorphous silicon can be used for the semiconductor film  508 . Microcrystalline silicon or the like can be used for the semiconductor film  508 . Thus, a functional panel having less display unevenness than a functional panel using polysilicon for the semiconductor film  508 , for example, can be provided. The size of the functional panel can be easily increased. 
     Polysilicon 
     For example, polysilicon can be used for the semiconductor film  508 . In this case, the field-effect mobility of the transistor can be higher than that of a transistor using hydrogenated amorphous silicon for the semiconductor film  508 , for example. The driving capability can be higher than that of a transistor using hydrogenated amorphous silicon for the semiconductor film  508 , for example. The aperture ratio of the pixel can be higher than that of a transistor using hydrogenated amorphous silicon for the semiconductor film  508 , for example. 
     The reliability of the transistor can be higher than that of a transistor using hydrogenated amorphous silicon for the semiconductor film  508 , for example. 
     The temperature required for fabrication of the transistor can be lower than that required for a transistor using single crystal silicon, for example. 
     The semiconductor film used in the transistor in the driver circuit can be formed through the same process as the semiconductor film used in the transistor in the pixel circuit. The driver circuit can be formed over the same substrate where the pixel circuit is formed. The number of components included in an electronic device can be reduced. 
     Single Crystal Silicon 
     For example, single crystal silicon can be used for the semiconductor film  508 . In this case, the resolution can be higher than that of a functional panel using hydrogenated amorphous silicon for the semiconductor film  508 , for example. A functional panel having less display unevenness than a functional panel using polysilicon for the semiconductor film  508  can be provided, for example. Smart glasses or a head mounted display can be provided, example. 
     Structure Example 2 of Semiconductor Film  508   
     A metal oxide can be used for the semiconductor film  508 , for example. Thus, a pixel circuit can hold an image signal for a longer time than a pixel circuit utilizing a transistor using amorphous silicon for a semiconductor film. Specifically, a selection signal can be supplied at a frequency of lower than 30 Hz, preferably lower than 1 Hz, further preferably less than once per minute with the suppressed occurrence of flickers. Consequently, fatigue accumulation in a user of a data processing device can be reduced. Moreover, power consumption for driving can be reduced. The pixel circuit can hold an imaging signal for a longer time than a pixel circuit utilizing a transistor using amorphous silicon for a semiconductor film. Specifically, the second selection signal can be supplied at a frequency lower than 30 Hz, preferably lower than 1 Hz, further preferably less than once per minute. Accordingly, images can be taken by a global shutter method. An image of a moving object can be taken with little distortion. 
     An oxide semiconductor can be used for the semiconductor film  508 , for example. Specifically, an oxide semiconductor containing indium or an oxide semiconductor containing indium, gallium, and zinc can be used for the semiconductor film  508 . 
     A transistor having a lower leakage current in an off state than a transistor using amorphous silicon for a semiconductor film can be used, for example. Specifically, a transistor using an oxide semiconductor for a semiconductor film can be used as a switch or the like. In that case, the potential of a floating node can be held for a longer time than in a circuit in which a transistor using amorphous silicon is used as a switch. 
     A 25-nm-thick film containing indium, gallium, and zinc can be used as the semiconductor film  508 , for example. 
     A conductive film in which a 10-nm-thick film containing tantalum and nitrogen and a 300-nm-thick film containing copper are stacked can be used as the conductive film  504 , for example. Note that the film containing tantalum and nitrogen is interposed between a region of the film containing copper and the insulating film  506 . 
     A stacked film in which a 400-nm-thick film containing silicon and nitrogen and a 200-nm-thick film containing silicon, oxygen, and nitrogen are stacked can be used as the insulating film  506 , for example. Note that the film containing silicon, oxygen, and nitrogen is interposed between a region of the film containing silicon and nitrogen and the semiconductor film  508 . 
     A conductive film in which a 50-nm-thick film containing tungsten, a 400-nm-thick film containing aluminum, and a 100-nm-thick film containing titanium are stacked in this order can be used as the conductive film  512 A or the conductive film  512 B, for example. Note that the film containing tungsten includes a region in contact with the semiconductor film  508 . 
     A manufacturing line for a bottom-gate transistor using amorphous silicon as a semiconductor can be easily remodeled into a manufacturing line for a bottom-gate transistor using an oxide semiconductor as a semiconductor, for example. Furthermore, a manufacturing line for a top-gate transistor using polysilicon as a semiconductor can be easily remodeled into a manufacturing line for a top-gate transistor using an oxide semiconductor as a semiconductor, for example. In either remodeling, an existing manufacturing line can be effectively utilized. 
     Accordingly, flickering can be suppressed. The power consumption can be reduced. A moving image with quick movements can be smoothly displayed. A photograph and the like can be displayed with a wide range of grayscale. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Structure Example 3 of Semiconductor Film  508   
     A compound semiconductor can be used as the semiconductor of the transistor, for example. Specifically, a semiconductor containing gallium arsenide can be used. 
     An organic semiconductor can be used as the semiconductor of the transistor, for example. Specifically, an organic semiconductor containing any of polyacenes or graphene can be used for the semiconductor film. 
     Structure Example of Capacitor 
     A capacitor includes one conductive film, a different conductive film, and an insulating film. The insulating film includes a region interposed between the one conductive film and the different conductive film. 
     For example, the conductive film  504 , the conductive film  512 A, and the insulating film  506  can be used in the capacitor. 
     Structure Example 2 of Functional Layer  520   
     The functional layer  520  includes an insulating film  521 , an insulating film  518 , an insulating film  516 , the insulating film  506 , an insulating film  501 C, and the like (see  FIG. 10A ). 
     The insulating film  521  includes a region interposed between the pixel circuit  530 G(i,j) and the light-emitting element  550 G(i,j). 
     The insulating film  518  includes a region interposed between the insulating film  521  and the insulating film  501 C. 
     The insulating film  516  includes a region interposed between the insulating film  518  and the insulating film  501 C. 
     The insulating film  506  includes a region interposed between the insulating film  516  and the insulating film  501 C. 
     Insulating Film  521   
     An insulating inorganic material, an insulating organic material, or an insulating composite material containing an inorganic material and an organic material, for example, can be used for the insulating film  521 . 
     Specifically, an inorganic oxide film, an inorganic nitride film, an inorganic oxynitride film, or the like, or a stacked-layer material in which a plurality of films selected from these films are stacked can be used as the insulating film  521 . 
     For example, a film including a silicon oxide film, a silicon nitride film, a silicon oxynitride film, an aluminum oxide film, or the like, or a film including a stacked-layer material in which a plurality of films selected from these films are stacked can be used as the insulating film  521 . Note that the silicon nitride film is a dense film and has an excellent function of inhibiting diffusion of impurities. 
     For example, for the insulating film  521 , polyester, polyolefin, polyamide, polyimide, polycarbonate, polysiloxane, an acrylic resin, or the like, or a stacked-layer material, a composite material, or the like of a plurality of resins selected from these resins can be used. A photosensitive material may be used. Thus, the insulating film  521  can planarize a level difference due to various components overlapping with the insulating film  521 , for example. 
     Note that polyimide is excellent in thermal stability, insulating property, toughness, low dielectric constant, low coefficient of thermal expansion, chemical resistance, and other properties compared with other organic materials. Accordingly, in particular, polyimide can be suitably used for the insulating film  521  or the like. 
     Alternatively, for example, a film formed using a photosensitive material can be used as the insulating film  521 . Specifically, a film formed using photosensitive polyimide, a photosensitive acrylic resin, or the like can be used as the insulating film  521 . 
     Insulating Film  518   
     The material that can be used for the insulating film  521 , for example, can be used for the insulating film  518 . 
     For example, a material that has a function of inhibiting diffusion of oxygen, hydrogen, water, an alkali metal, an alkaline earth metal, and the like can be used for the insulating film  518 . Specifically, a nitride insulating film can be used as the insulating film  518 . For example, silicon nitride, silicon nitride oxide, aluminum nitride, aluminum nitride oxide, or the like can be used for the insulating film  518 . Thus, diffusion of impurities into the semiconductor film of the transistor can be inhibited. 
     Insulating Film  516   
     The material that can be used for the insulating film  521 , for example, can be used for the insulating film  516 . 
     Specifically, a film formed by a fabrication method different from that of the insulating film  518  can be used as the insulating film  516 . 
     Insulating Film  506   
     The material that can be used for the insulating film  521 , for example, can be used for the insulating film  506 . 
     Specifically, a silicon oxide film, a silicon oxynitride film, a silicon nitride oxide film, a silicon nitride film, an aluminum oxide film, a hafnium oxide film, an yttrium oxide film, a zirconium oxide film, a gallium oxide film, a tantalum oxide film, a magnesium oxide film, a lanthanum oxide film, a cerium oxide film, or a neodymium oxide film can be used as the insulating film  506 . 
     Insulating Film  501 D 
     An insulating film  501 D includes a region interposed between the insulating film  501 C and the insulating film  516 . 
     The material that can be used for the insulating film  506 , for example, can be used for the insulating film  501 D. 
     Insulating film  501 C 
     The material that can be used for the insulating film  521 , for example, can be used for the insulating film  501 C. Specifically, a material containing silicon and oxygen can be used for the insulating film  501 C. Thus, diffusion of impurities into the pixel circuit, the light-emitting element, the photoelectric conversion element, or the like can be inhibited. 
     Structure Example 3 of Functional Layer  520   
     The functional layer  520  includes a conductive film, a wiring, and a terminal. A material having conductivity can be used for the wiring, an electrode, the terminal, the conductive film, or the like. 
     Wiring or the Like 
     For example, an inorganic conductive material, an organic conductive material, a metal, a conductive ceramic, or the like can be used for the wiring or the like. 
     Specifically, a metal element selected from aluminum, gold, platinum, silver, copper, chromium, tantalum, titanium, molybdenum, tungsten, nickel, iron, cobalt, palladium, and manganese, or the like can be used for the wiring or the like. An alloy containing the above-described metal element, or the like can be used for the wiring or the like. In particular, an alloy of copper and manganese is suitable for microfabrication using a wet etching method. 
     Specifically, a two-layer structure in which a titanium film is stacked over an aluminum film, a two-layer structure in which a titanium film is stacked over a titanium nitride film, a two-layer structure in which a tungsten film is stacked over a titanium nitride film, a two-layer structure in which a tungsten film is stacked over a tantalum nitride film or a tungsten nitride film, a three-layer structure of a titanium film, an aluminum film stacked over the titanium film, and a titanium film further formed thereover, or the like can be used for the wiring or the like. 
     Specifically, a conductive oxide such as indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, or zinc oxide to which gallium is added can be used for the wiring or the like. 
     Specifically, a film containing graphene or graphite can be used for the wiring or the like. 
     For example, a film containing graphene oxide is formed and the film containing graphene oxide is reduced, so that a film containing graphene can be formed. As a reducing method, a method with application of heat, a method using a reducing agent, or the like can be given. 
     For example, a film including a metal nanowire can be used for the wiring or the like. Specifically, a nanowire containing silver can be used. 
     Specifically, a conductive high molecule can be used for the wiring or the like. 
     Note that a terminal  519 B can be electrically connected to a flexible printed circuit FPC 1  using a conductive material ACF 1 , for example (see  FIG. 8 ). Specifically, the terminal  519 B can be electrically connected to the flexible printed circuit FPC 1  using a conductive material CP. 
     Structure Example 2 of Functional Panel  700   
     The functional panel  700  includes a base material  510 , a base material  770 , and a sealant  705  (see  FIG. 10A ). 
     Base Material  510  and Base Material  770   
     A material having a light-transmitting property can be used for the base material  510  or the base material  770 . 
     For example, a flexible material can be used for the base material  510  or the base material  770 . Thus, a flexible functional panel can be provided. 
     For example, a material with a thickness greater than or equal to 0.1 mm and less than or equal to 0.7 mm can be used. Specifically, a material polished to a thickness of approximately 0.1 mm can be used. Thus, the weight can be reduced. 
     A glass substrate of the 6th generation (1500 mm×1850 mm), the 7th generation (1870 mm×2200 mm), the 8th generation (2200 mm×2400 mm), the 9th generation (2400 mm×2800 mm), the 10th generation (2950 mm×3400 mm), or the like can be used as the base material  510  or the base material  770 . Thus, a large-sized display device can be fabricated. 
     For the base material  510  or the base material  770 , an organic material, an inorganic material, a composite material of an organic material and an inorganic material or the like can be used. 
     For example, an inorganic material such as glass, ceramic, or a metal can be used. Specifically, non-alkali glass, soda-lime glass, potash glass, crystal glass, aluminosilicate glass, tempered glass, chemically tempered glass, quartz, sapphire, or the like can be used for the base material  510  or the base material  770 . Aluminosilicate glass, tempered glass, chemically tempered glass, sapphire, or the like can be suitably used for the base material  510  or the base material  770  that is provided on the side close to a user of the functional panel. Thus, the functional panel can be prevented from being broken or damaged by the use thereof. 
     Specifically, an inorganic oxide film, an inorganic nitride film, an inorganic oxynitride film, or the like can be used. For example, a silicon oxide film, a silicon nitride film, a silicon oxynitride film, an aluminum oxide film, or the like can be used. Stainless steel, aluminum, or the like can be used for the base material  510  or the base material  770 . 
     For example, a single crystal semiconductor substrate of silicon or silicon carbide, a polycrystalline semiconductor substrate, a compound semiconductor substrate of silicon germanium or the like, an SOI substrate, or the like can be used as the base material  510  or the base material  770 . Thus, a semiconductor element can be formed over the base material  510  or the base material  770 . 
     For example, an organic material such as resin, a resin film, or plastic can be used for the base material  510  or the base material  770 . Specifically, a material containing polyester, polyolefin, polyamide (nylon, aramid, or the like), polyimide, polycarbonate, polyurethane, an acrylic resin, an epoxy resin, or a resin having a siloxane bond, such as silicone, can be used for the base material  510  or the base material  770 . For example, a resin film, a resin plate, a stacked-layer material, or the like containing any of these materials can be used. Thus, the weight can be reduced. For example, the frequency of occurrence of breakage or the like due to dropping can be reduced. 
     Specifically, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone (PES), a cycloolefin polymer (COP), a cycloolefin copolymer (COC), or the like can be used for the base material  510  or the base material  770 . 
     For example, a composite material formed by attaching a metal plate, a thin glass plate, or a film of an inorganic material or the like and a resin film or the like to each other can be used for the base material  510  or the base material  770 . For example, a composite material formed by dispersing a fibrous or particulate metal, glass, an inorganic material, or the like into resin can be used for the base material  510  or the base material  770 . For example, a composite material formed by dispersing a fibrous or particulate resin, an organic material, or the like into an inorganic material can be used for the base material  510  or the base material  770 . 
     Furthermore, a single-layer material or a material in which a plurality of layers are stacked can be used for the base material  510  or the base material  770 . For example, a material in which insulating films and the like are stacked can be used. Specifically, a material in which one or a plurality of films selected from a silicon oxide layer, a silicon nitride layer, a silicon oxynitride layer, and the like are stacked can be used. Thus, diffusion of impurities contained in the base materials can be prevented, for example. Diffusion of impurities contained in glass or resin can be prevented. Diffusion of impurities that pass through resin can be prevented. 
     Furthermore, paper, wood, or the like can be used for the base material  510  or the base material  770 . 
     For example, a material having heat resistance high enough to withstand heat treatment in the fabricating process can be used for the base material  510  or the base material  770 . Specifically, a material having heat resistance to heat applied in the formation process of directly forming the transistor, the capacitor, or the like can be used for the base material  510  or the base material  770 . 
     For example, a method in which an insulating film, a transistor, a capacitor, or the like is formed on a process substrate having heat resistance to heat applied in the fabricating process, and the formed insulating film, transistor, capacitor, or the like is transferred to the base material  510  or the base material  770  can be used. Accordingly, an insulating film, a transistor, a capacitor, or the like can be formed on a flexible substrate, for example. 
     Sealant  705   
     The sealant  705  includes a region interposed between the functional layer  520  and the base material  770  and has a function of bonding the functional layer  520  and the base material  770  together (see  FIG. 10A ). 
     An inorganic material, an organic material, a composite material of an inorganic material and an organic material, or the like can be used for the sealant  705 . 
     For example, an organic material such as a thermally fusible resin or a curable resin can be used for the sealant  705 . 
     For example, an organic material such as a reactive curable adhesive, a photocurable adhesive, a thermosetting adhesive, and/or an anaerobic adhesive can be used for the sealant  705 . 
     Specifically, an adhesive containing an epoxy resin, an acrylic resin, a silicone resin, a phenol resin, a polyimide resin, an imide resin, a PVC (polyvinyl chloride) resin, a PVB (polyvinyl butyral) resin, an EVA (ethylene vinyl acetate) resin, or the like can be used for the sealant  705 . 
     Structure Example 3 of Functional Panel  700   
     The functional panel  700  includes a functional layer  720  (see  FIG. 10A ). In addition, the functional panel  700  includes a structure body KB or the like. 
     Functional Layer  720   
     The functional layer  720  includes a light-blocking film BM and an insulating film  771 . 
     Light-Blocking Film BM 
     The light-blocking film BM includes an opening portion in a region overlapping with the pixel  702 G(i,j). The light-blocking film BM includes an opening portion in a region overlapping with the pixel  702 S(i,j). For example, a material of a dark color can be used for the light-blocking film BM. Thus, the display contrast can be increased. 
     Insulating Film  771   
     The insulating film  771  includes a region interposed between the base material  770  and the light-blocking film BM. 
     Structure Body KB 
     The structure body KB includes a region interposed between the functional layer  520  and the base material  770 . The structure body KB has a function of providing a predetermined space between the functional layer  520  and the base material  770 . 
     Structure Example 4 of Functional Panel  700   
     The functional panel  700  includes a functional film  770 P or the like (see  FIG. 10A ). 
     Functional Film  770 P and the Like 
     The functional film  770 P includes a region overlapping with the light-emitting element  550 G(i,j). 
     An anti-reflection film, a polarizing film, a retardation film, a light diffusion film, a condensing film, or the like can be used as the functional film  770 P, for example. 
     For example, an anti-reflection film with a thickness of less than or equal to 1 μm can be used as the functional film  770 P. Specifically, a stacked film in which three or more layers, preferably five or more layers, further preferably  15  or more layers of dielectrics are stacked can be used as the functional film  770 P. This allows the reflectance to be as low as 0.5% or less, preferably 0.08% or less. 
     For example, a circularly polarizing film can be used as the functional film  770 P. 
     An antistatic film inhibiting the attachment of a dust, a water repellent film inhibiting the attachment of a stain, an oil repellent film inhibiting the attachment of a stain, an antireflective film (anti-reflection film), a non-glare film (anti-glare film), a hard coat film inhibiting generation of a scratch in use, a self-healing film that self-heals from generated scratches, or the like can be used as the functional film  770 P. 
     Structure Example 5 of Functional Panel  700   
     The functional panel  700  includes the insulating film  528  and an insulating film  573  (see  FIG. 10A ). 
     Insulating Film  528   
     The insulating film  528  includes a region interposed between the functional layer  520  and the base material  770 , and the insulating film  528  includes an opening portion in a region overlapping with the light-emitting element  550 G(i,j) (see  FIG. 10A ). 
     The material that can be used for the insulating film  521 , for example, can be used for the insulating film  528 . Specifically, a silicon oxide film, a film containing an acrylic resin, a film containing polyimide, or the like can be used as the insulating film  528 . 
     Insulating Film  573   
     The light-emitting element  550 G(i,j) is interposed between a region of the insulating film  573  and the functional layer  520  (see  FIG. 10A ). 
     For example, a single film or a stacked film in which a plurality of films are stacked can be used as the insulating film  573 . Specifically, a stacked film in which an insulating film  573 A which can be formed by a method that hardly damages the light-emitting element  550 G(i,j) and a dense insulating film  573 B with a few defects are stacked can be used as the insulating film  573 . Thus, diffusion of impurities into the light-emitting element  550 G(i,j) can be inhibited. The reliability of the light-emitting element  550 G(i,j) can be increased. 
     Structure Example 2 of the Light-Emitting Element  550 G(i,j) 
     An organic electroluminescence element, an inorganic electroluminescence element, a light-emitting diode, a QDLED (Quantum Dot LED), or the like can be used as the light-emitting element  550 G(i,j) (see  FIG. 10A ). 
     For example, an electrode  551 G(i,j), an electrode  552 , and a layer  553 G(j) containing a light-emitting material can be used in the light-emitting element  550 G(i,j). The layer  553 G(j) containing a light-emitting material includes a region interposed between the electrode  551 G(i,j) and the electrode  552 . 
     Structure Example 1 of Layer  553 G(j) Containing Light-Emitting Material 
     A stacked-layer material can be used for the layer  553 G(j) containing a light-emitting material, for example. 
     For example, a material emitting blue light, a material emitting green light, a material emitting red light, a material emitting infrared rays, or a material emitting ultraviolet rays can be used for the layer  553 G(j) containing a light-emitting material. 
     Structure Example 2 of Layer  553 G(j) Containing Light-Emitting Material 
     A stacked-layer material stacked to emit white light can be used for the layer  553 G(j) containing a light-emitting material, for example. 
     Specifically, a plurality of materials emitting light with different hues can be used for the layer  553 G(j) containing a light-emitting material. 
     For example, a stacked-layer material in which a layer containing a light-emitting material including a fluorescent material that emits blue light and a layer containing materials that are other than fluorescent materials and that emit green light and red light are stacked can be used for the layer  553 G(j) containing a light-emitting material. A stacked-layer material in which a layer containing a light-emitting material including a fluorescent material that emits blue light and a layer containing a material that is other than a fluorescent material and that emits yellow light are stacked can be used for the layer  553 G(j) containing a light-emitting material. 
     Note that the layer  553 G(j) containing a light-emitting material can be used with a coloring film CF overlapping, for example. Thus, light of a predetermined hue can be extracted from white light. 
     Structure Example 3 of Layer  553 G(j) Containing Light-Emitting Material 
     A stacked-layer material stacked to emit blue light or ultraviolet rays can be used for the layer  553 G(j) containing a light-emitting material, for example. A color conversion layer CC can be used to overlap with the layer  553 G(j) containing a light-emitting material, for example. 
     Structure Example 4 of Layer  553 G(j) Containing Light-Emitting Material 
     The layer  553 G(j) containing a light-emitting material includes a light-emitting unit. The light-emitting unit includes one region where electrons injected from one side are recombined with holes injected from the other side. The light-emitting unit contains a light-emitting material, and the light-emitting material releases energy generated by recombination of electrons and holes as light. Note that a hole-transport layer and an electron-transport layer can be used in the light-emitting unit. The hole-transport layer is placed closer to the positive electrode than the electron-transport layer is, and has higher hole mobility than the electron-transport layer. 
     A plurality of light-emitting units and an intermediate layer can be used for the layer  553 G(j) containing a light-emitting material, for example. The intermediate layer includes a region interposed between two light-emitting units. The intermediate layer includes a charge-generation region, and the intermediate layer has functions of supplying holes to the light-emitting unit placed on the cathode side and supplying electrons to the light-emitting unit placed on the anode side. Furthermore, a structure including a plurality of light-emitting units and an intermediate layer is referred to as a tandem light-emitting element in some cases. 
     Accordingly, the current efficiency of light emission can be increased. The density of current flowing through the light-emitting element at the same luminance can be reduced. The reliability of the light-emitting element can be increased. 
     For example, a light-emitting unit containing a material emitting light with one hue and a light-emitting unit containing a material emitting light with a different hue can be stacked and used for the layer  553 G(j) containing a light-emitting material. A light-emitting unit containing a material emitting light with one hue and a light-emitting unit containing a material emitting light with the same hue can be stacked and used for the layer  553 G(j) containing a light-emitting material. Specifically, two light-emitting units each containing a material emitting blue light can be stacked and used. 
     For the layer  553 G(j) containing a light-emitting material, a high molecular compound (e.g., an oligomer, a dendrimer, or a polymer), a middle molecular compound (a compound between a low molecular compound and a high molecular compound with a molecular weight greater than or equal to 400 and less than or equal to 4000), or the like can be used. 
     Electrode  551 G(i,j) and Electrode  552   
     For example, the material that can be used for the wiring or the like can be used for the electrode  551 G(i,j) or the electrode  552 . Specifically, a material that has a visible-light-transmitting property can be used for the electrode  551 G(i,j) or the electrode  552 . 
     For example, a conductive oxide, a conductive oxide containing indium, indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, zinc oxide to which gallium is added, or the like can be used. Alternatively, a metal film thin enough to transmit light can be used. Alternatively, a material that has a visible-light-transmitting property can be used. 
     For example, a metal film that transmits part of light and reflects another part of the light can be used for the electrode  551 G(i,j) or the electrode  552 . The distance between the electrode  551 G(i,j) and the electrode  552  is adjusted using the layer  553 G(j) containing a light-emitting material, for example. 
     Thus, a microcavity structure can be provided in the light-emitting element  550 G(i,j). Light of a predetermined wavelength can be extracted more efficiently than other light. Light with a narrow half width of a spectrum can be extracted. Light of a bright color can be extracted. 
     For example, a film that efficiently reflects light can be used for the electrode  551 G(i,j) or the electrode  552 . Specifically, a material containing silver, palladium, and the like or a material containing silver, copper, and the like can be used for the metal film. 
     The electrode  551 G(i,j) is electrically connected to the pixel circuit  530 G(i,j) in the opening portion  591 G (see  FIG. 9A ). For example, the electrode  551 G(i,j) overlaps with the opening portion formed in the insulating film  528 , and the insulating film  528  is at the periphery of the electrode  551 G(i,j). 
     Thus, a short circuit between the electrode  551 G(i,j) and the electrode  552  can be prevented. 
     Structure Example 1 of Photoelectric Conversion Element PD(i,j) 
     The photoelectric conversion element PD(i,j) includes the electrode  551 S( i,j ), the electrode  552 , and a layer  553 S(j) containing a photoelectric conversion material (see  FIG. 9A ). 
     For example, a heterojunction photoelectric conversion element, a bulk heterojunction photoelectric conversion element, or the like can be used as the photoelectric conversion element PD(i,j). 
     Structure Example 1 of Layer  553 S(j) Containing Photoelectric Conversion Material 
     For example, a stacked-layer film in which a p-type semiconductor film and an n-type semiconductor film are stacked in contact with each other can be used as the layer  553 S(j) containing a photoelectric conversion material. Note that the photoelectric conversion element PD(i,j) in which a stacked-layer film with such a structure is used as the layer  553 S(j) containing a photoelectric conversion material can be referred to as a PN photodiode. 
     For example, a stacked-layer film in which a p-type semiconductor film, an i-type semiconductor film, and an n-type semiconductor film are stacked such that the i-type semiconductor film is interposed between the p-type semiconductor film and the n-type semiconductor film can be used as the layer  553 S(j) containing a photoelectric conversion material. Note that the photoelectric conversion element PD(i,j) in which a stacked-layer film with such a structure is used as the layer  553 S(j) containing a photoelectric conversion material can be referred to as a PIN photodiode. 
     For example, a stacked-layer film in which a p+-type semiconductor film, a p−-type semiconductor film, a p-type semiconductor film, and an n-type semiconductor film are stacked such that the p−-type semiconductor film is interposed between the p+-type semiconductor film and the n-type semiconductor film and the p-type semiconductor film is interposed between the p−-type semiconductor film and the n-type semiconductor film can be used as the layer  553 S(j) containing a photoelectric conversion material. Note that the photoelectric conversion element PD(i,j) in which a stacked-layer film with such a structure is used as the layer  553 S(j) containing a photoelectric conversion material can be referred to as an avalanche photodiode. 
     Structure Example 2 of Layer  553 S(j) Containing Photoelectric Conversion Material 
     For example, a semiconductor containing a Group  14  element can be used for the layer  553 S(j) containing a photoelectric conversion material. Specifically, a semiconductor containing silicon can be used for the layer  553 S(j) containing a photoelectric conversion material. For example, hydrogenated amorphous silicon, microcrystalline silicon, polysilicon, single crystal silicon, or the like can be used for the layer  553 S(j) containing a photoelectric conversion element. 
     For example, an organic semiconductor can be used for the layer  553 S(j) containing a photoelectric conversion element. Specifically, part of the layer used as the layer  553 G(j) containing a light-emitting material can be used as part of the layer  553 S(j) containing a photoelectric conversion element. 
     Specifically, a hole-transport layer and an electron-transport layer that are used in the layer  553 G(j) containing a light-emitting material can be used in the layer  553 S(j) containing a photoelectric conversion element. Accordingly, the manufacturing process can be simplified. 
     For example, an electron-accepting organic semiconductor material such as fullerene (e.g., C60 or C70) or a derivative thereof can be used for the n-type semiconductor film. 
     For example, an electron-donating organic semiconductor material such as copper(II) phthalocyanine (CuPc) or tetraphenyldibenzoperiflanthene (DBP) can be used for the p-type semiconductor film. 
     For example, a film obtained by co-evaporation of an electron-accepting semiconductor material and an electron-donating semiconductor material can be used as the i-type semiconductor film. 
     Structure Example 1 of Region  231   
     The region  231  includes a group of pixels  703 ( i , 1 ) to  703 ( i,n ) and a different group of pixels  703 ( 1   ,j ) to  703 (m,j) (see  FIG. 3A ). 
     The group of pixels  703 ( i , 1 ) to  703 ( i,n ) is arranged in the row direction (the direction indicated by an arrow R 1  in the drawing), and the group of pixels  703 ( i , 1 ) to  703 ( i,n ) includes the pixel  703 ( i,j ). 
     The conductive film G 1 ( i ) is electrically connected to the group of pixels  703 ( i , 1 ) to  703 ( i,n ), and the group of pixels  703 ( i , 1 ) to  703 ( i,n ) is electrically connected to the conductive film TX(i). 
     The different group of pixels  703 ( 1   ,j ) to  703 ( m,j ) is arranged in the column direction intersecting the row direction (the direction indicated by an arrow Cl in the drawing), and the different group of pixels  703 ( 1   ,j ) to  703 ( m,j ) includes the pixel  703 ( i,j ). 
     The different group of pixels  703 ( 1   ,j ) to  703 ( m,j ) is electrically connected to the conductive film S 1   g ( j ), and the different group of pixels  703 ( 1   ,j ) to  703 ( m,j ) is electrically connected to the conductive film WX(j). 
     Thus, imaging data can be obtained from a plurality of pixels. Image data can be supplied to a plurality of pixels. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     Structure Example 2 of Region  231   
     The region  231  includes the region  231 ( 1 ), and the region  231 ( 1 ) includes a pixel  703 ( g,h ) (see  FIG. 1A  and  FIG. 7A ). 
     The pixel  703 ( g,h ) includes the light-emitting element  550 ( 1 ) (see  FIG. 2C  and  FIG. 2D ). Specifically, a pixel  702 B(g,h) displaying blue, a pixel  702 G(g,h) displaying green, a pixel  702 R(g,h) displaying red, and the pixel  702 N(g,h) containing the light-emitting element  550 ( 1 ) can be used in the pixel  703 ( g,h ) (see  FIG. 2C  and  FIG. 7C ). 
     Structure Example 7 of Functional Panel 
     The functional panel that can be used for the data processing device of one embodiment of the present invention includes a multiplexer MUX, an amplifier circuit AMP, and an analog-digital converter circuit ADC (see  FIG. 3A ). 
     The multiplexer MUX has a function of obtaining the imaging signal from one selected from the plurality of sampling circuits SC(j) and supplying the imaging signal to the amplifier circuit AMP, for example. 
     Specifically, the multiplexer MUX, which is electrically connected to a third terminal OUT(1) of a sampling circuit SC(1) to a third terminal OUT(9) of a sampling circuit SC(9), can obtain the imaging signal from a predetermined sampling circuit and supply the imaging signal to the amplifier circuit AMP. 
     Thus, imaging data can be obtained by selecting a predetermined pixel from a plurality of pixels arranged in the row direction. The number of imaging signals obtained at the same time can be limited to a predetermined number. It is possible to use the analog-digital converter circuit ADC in which the number of input channels is smaller than the number of pixels arranged in the row direction. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     The amplifier circuit AMP can amplify the imaging signal and supply the amplified signal to the analog-digital converter circuit ADC. 
     Note that the functional layer  520  includes the multiplexer MUX and the amplifier circuit AMP. 
     Accordingly, for example, in a step of forming the semiconductor film used in the pixel circuit  530 G(i,j), semiconductor films used in the multiplexer MUX and the amplifier circuit AMP can be formed. The manufacturing process of the functional panel can be simplified. Thus, a novel functional panel that is highly convenient, useful, or reliable can be provided. 
     The analog-digital converter circuit ADC has a function of converting an analog imaging signal to a digital signal. 
     Note that this embodiment can be combined with any of the other embodiments in this specification as appropriate. 
     Embodiment 4 
     In this embodiment, a structure of the functional panel that can be used for the data processing device of one embodiment of the present invention will be described with reference to  FIG. 12 . 
       FIG. 12  is a diagram illustrating the structure of a display device of one embodiment of the present invention.  FIG. 12A  is a block diagram of the display device of one embodiment of the present invention, and  FIG. 12B  to  FIG. 12D  are projection views each illustrating the appearance of the display device of one embodiment of the present invention. 
     Structure Example of Display Device 
     The display device described in this embodiment includes the functional panel  700  and a control portion  238  (see  FIG. 12A ). 
     Structure Example 1 of Control Portion  238   
     The control portion  238  is supplied with image data VI and control data CI. For example, a clock signal, a timing signal, or the like can be used as the control data CI. 
     The control portion  238  generates data V 11  on the basis of the image data VI and generates a control signal on the basis of the control data CI. Furthermore, the control portion  238  supplies the data V 11  and the control signal. 
     The data V 11  includes a grayscale of 8 bits or more, preferably 12 bits or more, for example. In addition, a clock signal, a start pulse, or the like of a shift register used for a driver circuit can be used as the control signal, for example. 
     Structure Example 2 of Control Portion  238   
     For example, a decompression circuit  234  and an image processing circuit  235  can be used in the control portion  238 . 
     Decompression Circuit  234   
     The decompression circuit  234  has a function of decompressing the image data VI supplied in a compressed state. The decompression circuit  234  includes a memory portion. The memory portion has a function of storing decompressed image data, for example. 
     Image Processing Circuit  235   
     The image processing circuit  235  includes a memory region, for example. The memory region has a function of storing data included in the image data VI, for example. 
     The image processing circuit  235  has a function of generating the data V 11  by correcting the image data VI on the basis of a predetermined characteristic curve and a function of supplying the data V 11 , for example. 
     Structure Example 1 of Functional Panel 
     The functional panel  700  is supplied with the data V 11  and the control signal. For example, the functional panel  700  described in Embodiment 2 or Embodiment 3 can be used. 
     Structure Example 5 of Pixel  703 ( i,j ) 
     The pixel  703 ( i,j ) emits light on the basis of the data V 11 . The pixel  703 ( g,h ) also emits light on the basis of the data V 11 . 
     Thus, the image data can be displayed using the display element. Alternatively, the light-emitting element  550 ( 1 ) can emit light using the display element. Thus, a novel display device that is highly convenient, useful, or reliable can be provided. For example, a smartwatch (see  FIG. 12B ), a video monitor (see  FIG. 12C ), a laptop computer (see  FIG. 12D ), or the like can be provided. 
     Structure Example 2 of Functional Panel 
     For example, the functional panel  700  includes a driver circuit and a control circuit (see  FIG. 12A ). 
     Driver Circuit 
     The driver circuit operates on the basis of the control signal. Using the control signal enables a synchronized operation of a plurality of driver circuits. 
     For example, a driver circuit GD can be used in the functional panel  700 . The driver circuit GD is supplied with the control signal and has a function of supplying a first selection signal. 
     For example, a driver circuit SD can be used in the functional panel  700 . The driver circuit SD is supplied with the control signal and the data V 11  and can supply an image signal. 
     For example, a driver circuit RD can be used in the functional panel  700 . The driver circuit RD is supplied with the control signal and can supply a second selection signal. 
     For example, the reading circuit RC can be used in the functional panel  700 . The reading circuit RC is supplied with the control signal, and can read an imaging signal by a correlated double sampling method, for example. 
     Control Circuit  243   
     The control circuit  243  has a function of generating and supplying the control signal. For example, a clock signal or a timing signal can be used as the control signal. 
     Specifically, the control circuit formed over a rigid substrate can be used in the functional panel. The control circuit formed over the rigid substrate can be electrically connected to the control portion  238  using a flexible printed circuit. 
     Control Circuit  233   
     A timing controller can be used as the control circuit  233 , for example. 
     Note that this embodiment can be combined with any of the other embodiments in this specification as appropriate. 
     Embodiment 5 
     In this embodiment, a structure of an input/output device of one embodiment of the present invention will be described with reference to  FIG. 13 . 
       FIG. 13  is a block diagram illustrating the structure of the input/output device of one embodiment of the present invention. 
     Structure Example 1 of Input/Output Device 
     The input/output device described in this embodiment includes an input portion  240  and a display portion  230  (see  FIG. 13 ). 
     Structure Example of Display Portion  230   
     The display portion  230  includes a functional panel. For example, the functional panel  700  described in Embodiment 2 or Embodiment 3 can be used for the display portion  230 . Note that a panel including the input portion  240  and the display portion  230  can be referred to as an input/output panel  700 TP. 
     Structure Example of Input Portion  240   
     The input portion  240  includes a sensing region  241 . The input portion  240  has a function of sensing an object approaching the sensing region  241 . 
     The sensing region  241  includes a region overlapping with the pixel  703 ( i,j ). 
     Thus, the object approaching the region overlapping with the display portion can be sensed while image data is displayed using the display portion. A finger or the like that approaches the display portion can be used as a pointer to input position data. Position data can be associated with image data displayed on the display portion. Thus, a novel input/output device that is highly convenient, useful, or reliable can be provided. 
     Structure Example 1 of Sensing Region  241   
     The sensing region  241  includes one or a plurality of sensors, for example. 
     The sensing region  241  includes a group of sensors  802 ( g , 1 ) to  802 ( g,q ) and a different group of sensors  802 ( 1 , h ) to  802 ( p,h ). Note that g is an integer greater than or equal to 1 and less than or equal to p, h is an integer greater than or equal to 1 and less than or equal to q, and p and q are each an integer greater than or equal to 1. 
     The group of sensors  802 ( g , 1 ) to  802 ( g,q ) includes a sensor  802 ( g,h ) and is arranged in a row direction (the direction indicated by an arrow R 2  in the drawing). Note that the direction indicated by the arrow R 2  may be the same as or different from the direction indicated by the arrow R 1 . 
     The different group of sensors  802 ( 1 , h ) to  802 ( p,h ) includes the sensor  802 ( g,h ) and is arranged in a column direction intersecting the row direction (the direction indicated by an arrow C 2  in the drawing). 
     Sensor 
     The sensor has a function of sensing an approaching pointer. For example, a finger or a stylus pen can be used as the pointer. For example, a piece of metal or a coil can be used for the stylus pen. 
     Specifically, a capacitive proximity sensor, an electromagnetic inductive proximity sensor, an optical proximity sensor, a resistive proximity sensor, or the like can be used as the sensor. 
     A plurality of types of sensors can be used in combination. For example, a sensor that senses a finger and a senor that senses a stylus pen can be used in combination. 
     This allows determination of the kind of a pointer. Different instructions can be associated with sensing data depending on the kind of a pointer that has been determined. Specifically, in the case where it is determined that a finger is used as a pointer, sensing data can be associated with a gesture. In the case where it is determined that a stylus pen is used as a pointer, sensing data can be associated with drawing processing. 
     Specifically, a finger can be sensed using a capacitive, pressure-sensitive, or optical proximity sensor. A stylus pen can be sensed using an electromagnetic inductive or optical proximity sensor. 
     Structure Example 2 of Input Portion  240   
     The input portion  240  includes an oscillation circuit OSC and a sensing circuit DC (see  FIG. 13 ). 
     The oscillation circuit OSC supplies a search signal to the sensor  802 ( g,h ). For example, a rectangular wave, a sawtooth wave, a triangular wave, or a sine wave can be used as the search signal. 
     The sensor  802 ( g,h ) generates and supplies a sensing signal that changes in accordance with the search signal and the distance to a pointer approaching the sensor  802 ( g,h ). 
     The sensing circuit DC supplies input data in response to the sensing signal. 
     Accordingly, the distance from an approaching pointer to the sensing region  241  can be sensed. The position in the sensing region  241  where the pointer comes the closest can be sensed. 
     Note that this embodiment can be combined with any of the other embodiments in this specification as appropriate. 
     Embodiment 6 
     In this embodiment, a structure of the data processing device of one embodiment of the present invention will be described with reference to  FIG. 14  to  FIG. 16 . 
       FIG. 14A  is a block diagram illustrating a structure of the data processing device of one embodiment of the present invention.  FIG. 14B  and  FIG. 14C  are projection views each illustrating an example of the appearance of the data processing device. 
       FIG. 15  is a flow chart showing a program of one embodiment of the present invention.  FIG. 15A  is a flow chart showing main processing of the program of one embodiment of the present invention, and  FIG. 15B  is a flow chart showing interrupt processing. 
       FIG. 16  shows the program of one embodiment of the present invention.  FIG. 16A  is a flow chart showing interrupt processing of the program of one embodiment of the present invention.  FIG. 16B  is a schematic view illustrating handling of the data processing device, and  FIG. 16C  is a timing chart showing the operation of the data processing device of one embodiment of the present invention. 
     Structure Example 1 of Data Processing Device 
     The data processing device described in this embodiment includes an arithmetic device  210  and an input/output device  220  (see  FIG. 14A ). Note that the input/output device  220  is electrically connected to the arithmetic device  210 . A data processing device  200  can also include a housing (see  FIG. 14B  and  FIG. 14C ). 
     Structure Example 1 of Arithmetic Device  210   
     The arithmetic device  210  is supplied with input data II or sensing data DS. The arithmetic device  210  generates the control data CI and the image data VI on the basis of the input data II or the sensing data DS and supplies the control data CI and the image data VI. 
     The arithmetic device  210  includes an arithmetic portion  211  and a memory portion  212 . The arithmetic device  210  also includes a transmission path  214  and an input/output interface  215 . 
     The transmission path  214  is electrically connected to the arithmetic portion  211 , the memory portion  212 , and the input/output interface  215 . 
     Arithmetic Portion  211   
     The arithmetic portion  211  has a function of executing a program, for example. 
     Memory Portion  212   
     The memory portion  212  has a function of storing, for example, the program executed by the arithmetic portion  211 , initial data, setting data, an image, or the like. 
     Specifically, a hard disk, a flash memory, a memory using a transistor including an oxide semiconductor, or the like can be used. 
     Input/Output Interface  215  and Transmission Path  214   
     The input/output interface  215  includes a terminal or a wiring and has a function of supplying data and being supplied with data. The input/output interface  215  can be electrically connected to the transmission path  214 , for example. The input/output interface  215  can also be electrically connected to the input/output device  220 . 
     The transmission path  214  includes a wiring and has a function of supplying data and being supplied with data. The transmission path  214  can be electrically connected to the input/output interface  215 , for example. The transmission path  214  can also be electrically connected to the arithmetic portion  211 , the memory portion  212 , or the input/output interface  215 . 
     Structure Example of Input/Output Device  220   
     The input/output device  220  supplies the input data II and the sensing data DS. The input/output device  220  is supplied with the control data CI and the image data VI (see  FIG. 14A ). 
     As the input data II, for example, a scan code of a keyboard, position data, data on button handling, sound data, or image data can be used. As the sensing data DS, for example, illuminance data, attitude data, acceleration data, bearing data, pressure data, temperature data, humidity data, or the like of the environment where the data processing device  200  is used, or the like can be used. 
     As the control data CI, for example, a signal controlling the luminance of display of the image data VI, a signal controlling the color saturation, or a signal controlling the hue can be used. A signal that changes display of part of the image data VI can be used as the control data CI. 
     The input/output device  220  includes the display portion  230 , the input portion  240 , and a sensor portion  250 . For example, the input/output device described in Embodiment 5 can be used as the input/output device  220 . The input/output device  220  can include a communication portion  290 . 
     Structure Example of Display Portion  230   
     The display portion  230  displays the image data VI on the basis of the control data CI. 
     The display portion  230  includes the control portion  238 , the driver circuit GD, the driver circuit SD, and the functional panel  700  (see  FIG. 12 ). For example, the display device described in Embodiment 4 can be used for the display portion  230 . 
     Structure Example of Input Portion  240   
     The input portion  240  generates the input data II. For example, the input portion  240  has a function of supplying position data P 1 . 
     For example, a human interface or the like can be used as the input portion  240  (see  FIG. 14A ). Specifically, a keyboard, a mouse, a touch sensor, a microphone, a camera, or the like can be used as the input portion  240 . 
     A touch sensor including a region overlapping with the display portion  230  can be used. Note that an input/output device including the display portion  230  and a touch sensor including a region overlapping with the display portion  230  can be referred to as a touch panel or a touch screen. 
     A user can make various gestures (tap, drag, swipe, pinch in, and the like) using his/her finger touching the touch panel as a pointer, for example. 
     The arithmetic device  210 , for example, analyzes data on the position, path, or the like of a finger in contact with the touch panel and can determine that a predetermined gesture is supplied when the analysis results meet predetermined conditions. Thus, the user can supply a predetermined operation instruction associated with a predetermined gesture in advance by using the gesture. 
     For instance, the user can supply a “scroll instruction” for changing the display position of image data by using a gesture of moving a finger in contact with the touch panel along the touch panel. 
     The user can supply a “dragging instruction” for pulling out and displaying a navigation panel NP at an edge portion of the region  231  by using a gesture of moving a finger in contact with the edge portion of the region  231  (see  FIG. 14C ). Moreover, the user can supply a “leafing through instruction” for displaying index images IND, some parts of other pages, or thumbnail images TN of other pages in a predetermined order on the navigation panel NP so that the user can flip through these images, by using a gesture of moving the position where a finger presses hard. The instruction can be supplied by using the finger press pressure. Consequently, the user can turn the pages of an e-book reader terminal like flipping through the pages of a paper book. The user can search a certain page with the aid of the thumbnail images TN or the index images IND. 
     Structure Example of Sensor Portion  250   
     The sensor portion  250  generates the sensing data DS. The sensor portion  250  has a function of sensing the illuminance of the environment where the data processing device  200  is used and a function of supplying illuminance data, for example. 
     The sensor portion  250  has a function of sensing the ambient conditions and supplying the sensing data. Specifically, illuminance data, attitude data, acceleration data, bearing data, pressure data, temperature data, humidity data, or the like can be supplied. 
     For example, a photosensor, an attitude sensor, an acceleration sensor, a direction sensor, a GPS (Global positioning system) signal receiving circuit, a pressure-sensitive switch, a pressure sensor, a temperature sensor, a humidity sensor, a camera, or the like can be used as the sensor portion  250 . 
     Communication Portion  290   
     The communication portion  290  has a function of supplying data to a network and obtaining data from the network. 
     Housing 
     Note that the housing has a function of storing the input/output device  220  or the arithmetic device  210 . The housing has a function of supporting the display portion  230  or the arithmetic device  210 . 
     Thus, the control data can be generated on the basis of the input data or the sensing data. The image data can be displayed on the basis of the input data or the sensing data. The data processing device is capable of operating with knowledge of the intensity of light that the housing of the data processing device receives in the environment where the data processing device is used. The user of the data processing device can select a display method. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Note that in some cases, these components cannot be clearly distinguished from each other and one component may also serve as another component or may include part of another component. For example, a touch panel in which a touch sensor overlaps with a functional panel is an input portion as well as a display portion. 
     Structure Example 2 of Arithmetic Device  210   
     The arithmetic device  210  includes an artificial intelligence portion  213  (see  FIG. 14A ). 
     The artificial intelligence portion  213  is supplied with the input data II or the sensing data DS, and the artificial intelligence portion  213  infers the control data CI on the basis of the input data II or the sensing data DS. Moreover, the artificial intelligence portion  213  supplies the control data CI. 
     In this manner, the control data CI for display that can be felt suitable can be generated. Display that can be felt suitable is possible. The control data CI for display that can be felt comfortable can be generated. Display that can be felt comfortable is possible. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Natural Language Processing on Input Data II 
     Specifically, the artificial intelligence portion  213  can perform natural language processing on the input data II to extract one feature from the whole input data II. For example, the artificial intelligence portion  213  can infer emotion or the like put in the input data II, which can be a feature. The artificial intelligence portion  213  can infer the color, design, font, or the like empirically felt suitable for the feature. The artificial intelligence portion  213  can generate data specifying the color, design, or font of a letter or data specifying the color or design of the background, and the data can be used as the control data CI. 
     Specifically, the artificial intelligence portion  213  can perform natural language processing on the input data II to extract some words included in the input data II. For example, the artificial intelligence portion  213  can extract expressions including a grammatical error, a factual error, emotion, and the like. The artificial intelligence portion  213  can generate the control data CI for displaying extracted part in the color, design, font, or the like different from those of another part, and the data can be used as the control data CI. 
     Image Processing on Input Data II 
     Specifically, the artificial intelligence portion  213  can perform image processing on the input data II to extract one feature from the input data II. For example, the artificial intelligence portion  213  can infer the age where an image of the input data II is taken, whether the image is taken indoors or outdoors, whether the image is taken in the daytime or at night, or the like, which can be a feature. The artificial intelligence portion  213  can infer the color tone empirically felt suitable for the feature and generate the control data CI for use of the color tone for display. Specifically, data specifying color (e.g., full color, monochrome, or sepia) used for expression of a gradation can be used as the control data CI. 
     Specifically, the artificial intelligence portion  213  can perform image processing on the input data II to extract some images included in the input data II. For example, the artificial intelligence portion  213  can generate the control data CI for displaying a boundary between extracted part of the image and another part. Specifically, the artificial intelligence portion  213  can generate the control data CI for displaying a rectangle surrounding the extracted part of the image. 
     Inference Using Sensing Data DS 
     Specifically, the artificial intelligence portion  213  can generate an inference using the sensing data DS. The artificial intelligence portion  213  can generate the control data CI on the basis of the inference so that the user of the data processing device  200  can feel comfortable. 
     Specifically, the artificial intelligence portion  213  can generate the control data CI for adjustment of display brightness on the basis of the ambient illuminance or the like so that the display brightness can be felt comfortable. The artificial intelligence portion  213  can generate the control data CI for adjustment of volume on the basis of the ambient noise or the like so that the volume can be felt comfortable. 
     As the control data CI, a clock signal, a timing signal, or the like that is supplied to the control portion  238  included in the display portion  230  can be used. A clock signal, a timing signal, or the like that is supplied to a control portion  248  included in the input portion  240  can be used as the control data CI. 
     Structure Example 2 of Data Processing Device 
     Another structure of the data processing device of one embodiment of the present invention will be described with reference to  FIG. 15A  and  FIG. 15B . 
     Program 
     A program of one embodiment of the present invention has the following steps (see  FIG. 15A ). 
     First Step 
     In a first step, setting is initialized (see (S 1 ) in  FIG. 15A ). 
     For example, predetermined image data that is to be displayed on start-up, a predetermined mode for displaying the image data, and data for determining a predetermined display method for displaying the image data are acquired from the memory portion  212 . 
     Specifically, one still image data or another moving image data can be used as the predetermined image data. Furthermore, a first mode or a second mode can be used as the predetermined mode. 
     Second Step 
     In a second step, interrupt processing is allowed (see (S 2 ) in  FIG. 15A ). Note that an arithmetic device allowed to execute the interrupt processing can perform the interrupt processing in parallel with the main processing. The arithmetic device that has returned from the interrupt processing to the main processing can reflect the results obtained through the interrupt processing in the main processing. 
     The arithmetic device may execute the interrupt processing when a counter has an initial value, and the counter may be set at a value other than the initial value when the arithmetic device returns from the interrupt processing. Thus, the interrupt processing can be executed any time after the program is started up. 
     Third Step 
     In a third step, image data is displayed by a predetermined mode or a predetermined display method selected in the first step or the interrupt processing (see (S 3 ) in  FIG. 15A ). Note that the predetermined mode determines a mode for displaying the data, and the predetermined display method determines a method for displaying the image data. For example, the image data VI can be used as data to be displayed. 
     One method for displaying the image data VI can be associated with the first mode, for example. Another method for displaying the image data VI can be associated with the second mode. Thus, a display method can be selected on the basis of the selected mode. 
     First Mode 
     Specifically, a method for supplying selection signals to a scan line at a frequency of 30 Hz or higher, preferably 60 Hz or higher, to perform display in response to the selection signals can be associated with the first mode. 
     For example, when selection signals are supplied at a frequency of 30 Hz or higher, preferably 60 Hz or higher, the movement of a displayed moving image can be smooth. 
     For example, when an image is refreshed at a frequency of 30 Hz or higher, preferably 60 Hz or higher, an image that changes so as to smoothly follow the user&#39;s operation can be displayed on the data processing device  200  which is being operated by the user. 
     Second Mode 
     Specifically, a method for supplying selection signals to a scan line at a frequency lower than 30 Hz, preferably lower than 1 Hz, further preferably less than once a minute, to perform display in response to the selection signals can be associated with the second mode. 
     The supply of selection signals at a frequency lower than 30 Hz, preferably lower than 1 Hz, further preferably less than once a minute enables display with a flicker or flickering suppressed. Furthermore, the power consumption can be reduced. 
     For example, in the case where the data processing device  200  is used for a clock, the display can be refreshed at a frequency of once a second, once a minute, or the like. 
     In the case where a light-emitting element is used as a display element, for example, the light-emitting element can be made to emit light in a pulsed manner so that the image data is displayed. Specifically, an organic EL element can be made to emit light in a pulsed manner, and its afterglow can be used for display. The organic EL element has excellent frequency characteristics; thus, time for driving the light-emitting element can be shortened and the power consumption can be reduced in some cases. Heat generation is inhibited; thus, the deterioration of the light-emitting element can be suppressed in some cases. 
     Fourth Step 
     In a fourth step, selection is performed such that the program proceeds to a fifth step when an end instruction has been supplied, whereas the program proceeds to the third step when the end instruction has not been supplied (see (S 4 ) in  FIG. 15A ). 
     For example, the end instruction supplied in the interrupt processing may be used for the determination. 
     Fifth Step 
     In the fifth step, the program ends (see (S 5 ) in  FIG. 15A ). 
     Interrupt Processing 
     The interrupt processing includes a sixth step to an eighth step described below (see  FIG. 15B ). 
     Sixth Step 
     In the sixth step, the illuminance of the environment where the data processing device  200  is used is sensed using the sensor portion  250 , for example (see (S 6 ) in  FIG. 15B ). Note that color temperature or chromaticity of ambient light may be sensed instead of the illuminance of the environment. 
     Seventh Step 
     In the seventh step, a display method is determined on the basis of the sensed illuminance data (see (S 7 ) in  FIG. 15B ). For example, a display method is determined such that the brightness of display is not too dark or too bright. 
     Note that in the case where the color temperature of the ambient light or the chromaticity of the ambient light is sensed in the sixth step, the color of display may be adjusted. 
     Eighth Step 
     In the eighth step, the interrupt processing ends (see (S 8 ) in  FIG. 15B ). 
     Structure Example 3 of Data Processing Device 
     Another structure of the data processing device of one embodiment of the present invention is described with reference to  FIG. 16 . 
       FIG. 16A  is a flow chart showing a program of one embodiment of the present invention.  FIG. 16A  is a flow chart showing interrupt processing different from the interrupt processing shown in  FIG. 15B . 
     Note that the structure example 3 of the data processing device is different from the interrupt processing described with reference to  FIG. 15B  in that the interrupt processing includes a step of changing a mode on the basis of a supplied predetermined event. Different portions will be described in detail here, and the above description is referred to for portions that can use similar structures. 
     Interrupt Processing 
     The interrupt processing includes a sixth step to an eighth step described below (see  FIG. 16A ). 
     Sixth Step 
     In the sixth step, the program proceeds to the seventh step when a predetermined event has been supplied, whereas the program proceeds to the eighth step when the predetermined event has not been supplied (see (U 6 ) in  FIG. 16A ). For example, whether the predetermined event is supplied in a predetermined period or not can be used as a condition. Specifically, the predetermined period can be longer than 0 seconds, and shorter than or equal to 5 seconds, shorter than or equal to 1 second, or shorter than or equal to 0.5 seconds, preferably shorter than or equal to 0.1 seconds. 
     Seventh Step 
     In the seventh step, the mode is changed (see (U 7 ) in  FIG. 16A ). Specifically, the second mode is selected in the case where the first mode has been selected, and the first mode is selected in the case where the second mode has been selected. 
     For example, it is possible to change the display mode of a region that is part of the display portion  230 . Specifically, the display mode of a region where one driver circuit in the display portion  230  including a driver circuit GDA, a driver circuit GDB, and a driver circuit GDC supplies a selection signal can be changed (see  FIG. 16B ). 
     For example, the display mode of the region where a selection signal is supplied from the driver circuit GDB can be changed when a predetermined event is supplied to the input portion  240  in a region overlapping with the region where a selection signal is supplied from the driver circuit GDB (see  FIG. 16B  and  FIG. 16C ). Specifically, the frequency of supply of the selection signal from the driver circuit GDB can be changed in accordance with a “tap” event supplied to a touch panel with a finger or the like. 
     A signal GCLK is a clock signal controlling the operation of the driver circuit GDB, and a signal PWC 1  and a signal PWC 2  are pulse width control signals controlling the operation of the driver circuit GDB. The driver circuit GDB supplies selection signals to a conductive film G 2 ( m + 1 ) to a conductive film G 2 ( 2   m ) on the basis of the signal GCLK, the signal PWC 1 , the signal PWC 2 , and the like. 
     Thus, for example, the driver circuit GDB can supply a selection signal without supply of selection signals from the driver circuit GDA and the driver circuit GDC. The display of the region where a selection signal is supplied from the driver circuit GDB can be refreshed without any change in the display of regions where selection signals are supplied from the driver circuit GDA and the driver circuit GDC. Power consumed by the driver circuits can be reduced. 
     Eighth Step 
     In the eighth step, the interrupt processing ends (see (U 8 ) in  FIG. 16A ). Note that in a period in which the main processing is executed, the interrupt processing may be repeatedly executed. 
     Predetermined Event 
     For example, it is possible to use events supplied using a pointing device such as a mouse, such as “click” and “drag”, and events supplied to a touch panel with a finger or the like used as a pointer, such as “tap”, “drag”, and “swipe”. 
     For example, the position of a slide bar pointed by a pointer, the swipe speed, and the drag speed can be used to assign arguments to an instruction associated with a predetermined event. 
     For example, data sensed by the sensor portion  250  is compared with a predetermined threshold value, and the compared results can be used for the event. 
     Specifically, a pressure sensor or the like in contact with a button or the like that is arranged so as to be pushed in a housing can be used for the sensor portion  250 . 
     Instruction Associated with Predetermined Event 
     For example, the end instruction can be associated with a predetermined event. 
     For example, “page-turning instruction” for switching display from one displayed image data to another image data can be associated with a predetermined event. Note that an argument determining the page-turning speed or the like, which is used when the “page-turning instruction” is executed, can be supplied using the predetermined event. 
     For example, “scroll instruction” for moving the display position of displayed part of image data and displaying another part continuing from that part, or the like can be associated with a predetermined event. Note that an argument determining the moving speed of display, or the like, which is used when the “scroll instruction” is executed, can be supplied using the predetermined event. 
     For example, an instruction for setting the display method, an instruction for generating image data, or the like can be associated with a predetermined event. Note that an argument determining the brightness of a generated image can be associated with a predetermined event. An argument determining the brightness of a generated image may be determined on the basis of ambient brightness sensed by the sensor portion  250 . 
     For example, an instruction for acquiring data distributed via a push service using the communication portion  290  or the like can be associated with a predetermined event. 
     Note that position data sensed by the sensor portion  250  may be used for the determination of the presence or absence of a qualification for acquiring data. Specifically, it may be determined that there is a qualification for acquiring data in the case of presence in a predetermined class room, school, conference room, company, building, or the like or in a predetermined region. Thus, for example, educational materials distributed in a classroom of a school, a university, or the like can be received, so that the data processing device  200  can be used as a schoolbook or the like (see  FIG. 14C ). Materials distributed in a conference room in, for example, a company can be received and used for a conference material. 
     Structure Example 4 of Data Processing Device 
     Another structure of the data processing device of one embodiment of the present invention is described with reference to  FIG. 17 . 
       FIG. 17A  is a flow chart showing a program of one embodiment of the present invention.  FIG. 17A  is a flow chart showing interrupt processing different from the interrupt processing shown in  FIG. 15B .  FIG. 17B  is a schematic view illustrating operation of the program illustrated in  FIG. 17A .  FIG. 17C  is a schematic view of an imaged fingerprint. 
     Note that the structure example 4 of the data processing device described with reference to  FIG. 17A  is different from the structure example described with reference to  FIG. 15B  in the interrupt processing. Specifically, the interrupt processing includes the step of determining a region, the step of generating an image, the step of displaying the image, and the step of imaging on the basis of a supplied predetermined event. Different portions will be described in detail here, and the above description is referred to for portions that can use similar structures. 
     Interrupt Processing 
     The interrupt processing includes a sixth step to an eleventh step (see  FIG. 17A ). 
     Sixth Step 
     In the sixth step, the program proceeds to the seventh step when a predetermined event has been supplied, whereas the program proceeds to the eleventh step when the predetermined event has not been supplied (see (V 6 ) in  FIG. 17A ). 
     The predetermined event can be supplied using the sensor portion  250 , for example. Specifically, a motion such as lifting of the data processing device can be used as the predetermined event. For example, a motion of the data processing device can be sensed using an angular sensor or an acceleration sensor. Touch or approach of an object such as a finger can be sensed using a touch sensor. 
     Seventh Step 
     In the seventh step, a first region SH is determined (see (V 7 ) in  FIG. 17A ). 
     For example, a region where an object such as a finger touches or approaches the input/output device  220  of one embodiment of the present invention can be the first region SH. A region that is set in advance by the user or the like can be used as the first region SH. 
     Specifically, an image of a finger THM or the like that touches or approaches the functional panel that can be used for the data processing device of one embodiment of the present invention is taken using the pixel  703 ( i,j ) and subjected to image processing, whereby the first region SH can be determined (see  FIG. 17B ). 
     For example, an image of a shadow caused when external light is blocked by touch or approach of an object such as the finger THM is taken using the pixel  703 ( i,j ) in the functional panel of one embodiment of the present invention and subjected to image processing, whereby the first region SH can be determined. 
     With the use of the pixel  703 ( i,j ) in the functional panel that can be used for the data processing device of one embodiment of the present invention, an object such as the finger THM that touches or approaches the functional panel is irradiated with light, and an image of light reflected by the object is taken using the pixel  703 ( i,j ) and subjected to image processing, whereby the first region SH can be determined. 
     A region where an object such as the finger THM touches can be determined as the first region SH by a touch sensor. 
     Eighth Step 
     In the eighth step, an image FI including a second region and a third region is generated in accordance with the first region SH (see (V 8 ) in  FIG. 17A  and  FIG. 17B ). For example, the shape of the first region SH is used as the shape of the second region, and a region excluding the first region SH is used as the third region. 
     Ninth Step 
     In the ninth step, the image FI is displayed such that the second region overlaps with the first region SH (see (V 9 ) in  FIG. 17A  and  FIG. 17B ). 
     For example, an image signal is generated from the image FI and supplied to the region  231 , and light is emitted from the pixel  703 ( i,j ). In a period during which the first selection signal is supplied to the conductive film G 1 ( i ), the generated image signal is supplied to the conductive film S 1   g ( j ), and the image signal can be written to the pixel  703 ( i,j ). The generated image signal is supplied to the conductive film S 1   g ( j ) and the conductive film S 1   g ( j ), and an enhanced image signal can be written to the pixel  703 ( i,j ). The use of an enhanced image signal enables display with higher luminance. 
     Thus, the image FI can be displayed to overlap with the region SH that is a region where the object such as a finger touches or approaches the region  231 . The region where the object such as a finger touches can be irradiated with light using the pixel  703 ( i,j ). The touching or approaching object such as the finger THM can be illuminated with a light. The object such as a finger can be led to touch or approach the region that is determined in advance by the user or the like. 
     Tenth Step 
     In the tenth step, the object that touches or approaches the first region SH is imaged while the image FI is displayed (see (V 10 ) in  FIG. 17A  and  FIG. 17B ). 
     For example, an image of the finger THM or the like approaching the region  231  is taken while the finger THM or the like is irradiated with light. Specifically, an image of a fingerprint FP of the finger THM touching the region  231  can be taken (see  FIG. 17C ). 
     For example, the supply of the first selection signal can be stopped while an image is displayed with the pixel  703 ( i,j ). For example, imaging can be performed using the pixel  703 ( i,j ) while the supply of the selection signal to the pixel circuit  530 G(i,j) is stopped. 
     Accordingly, the touching or approaching object such as a finger can be imaged while the object is illuminated. Imaging can be performed in a period during which the first selection signal is not supplied. Noise in imaging can be inhibited. A clear image of a fingerprint can be obtained. An image that can be used for the authentication of the user can be obtained. In any area of the region  231 , an image of the fingerprint of the finger which touches the region  231  can be taken clearly. Thus, a novel data processing device that is highly convenient, useful, or reliable can be provided. 
     Eleventh Step 
     In the eleventh step, the interrupt processing ends (see (V 11 ) in  FIG. 17A ). 
     Note that this embodiment can be combined with any of the other embodiments in this specification as appropriate. 
     Embodiment 7 
     In this embodiment, structures of a data processing device of one embodiment of the present invention will be described with reference to  FIG. 18  to  FIG. 21 . 
       FIG. 18  to  FIG. 21  are diagrams illustrating structures of the data processing device of one embodiment of the present invention.  FIG. 18A  is a block diagram of the data processing device, and  FIG. 18B  to  FIG. 18E  are perspective views illustrating structures of the data processing device. In addition,  FIG. 19A  to  FIG. 19E  are perspective views illustrating structures of the data processing device. In addition,  FIG. 20A  and  FIG. 20B  are perspective views illustrating structures of the data processing device.  FIG. 21  is a perspective view illustrating a structure of the data processing device. 
     Data Processing Device 
     A data processing device  5200 B described in this embodiment includes an arithmetic device  5210  and an input/output device  5220  (see  FIG. 18A ). 
     The arithmetic device  5210  has a function of being supplied with operation data and has a function of supplying image data on the basis of the operation data. 
     The input/output device  5220  includes a display portion  5230 , an input portion  5240 , a sensing portion  5250 , and a communication portion  5290  and has a function of supplying operation data and a function of being supplied with image data. The input/output device  5220  also has a function of supplying sensing data, a function of supplying communication data, and a function of being supplied with communication data. 
     The input portion  5240  has a function of supplying operation data. For example, the input portion  5240  supplies operation data on the basis of operation by a user of the data processing device  5200 B. 
     Specifically, a keyboard, a hardware button, a pointing device, a touch sensor, an illuminance sensor, an imaging device, an audio input device, an eye-gaze input device, an attitude detection device, or the like can be used as the input portion  5240 . 
     The display portion  5230  includes a functional panel and has a function of displaying image data. For example, the functional panel described in Embodiment 2 or Embodiment 3 can be used for the display portion  5230 . 
     The sensing portion  5250  has a function of supplying sensing data. For example, the sensing portion  5250  has a function of sensing a surrounding environment where the data processing device is used and supplying sensing data. 
     Specifically, an illuminance sensor, an imaging device, an attitude detection device, a pressure sensor, a human motion sensor, or the like can be used as the sensing portion  5250 . 
     The communication portion  5290  has a function of being supplied with communication data and a function of supplying communication data. For example, the communication portion  5290  has a function of being connected to another electronic device or a communication network through wireless communication or wired communication. Specifically, the communication portion  5290  has a function of wireless local area network communication, telephone communication, near field communication, or the like. 
     Structure Example 1 of Data Processing Device 
     For example, the display portion  5230  can have an outer shape along a cylindrical column or the like (see  FIG. 18B ). In addition, the data processing device has a function of changing its display method in accordance with the illuminance of a usage environment. Furthermore, the data processing device has a function of changing displayed content in response to sensed existence of a person. This allows the data processing device to be provided on a column of a building, for example. The data processing device can display advertising, guidance, or the like. The data processing device can be used for digital signage or the like. 
     Structure Example 2 of Data Processing Device 
     For example, the data processing device has a function of generating image data on the basis of the path of a pointer used by a user (see  FIG. 18C ). Specifically, the functional panel with a diagonal size of 20 inches or longer, preferably 40 inches or longer, further preferably 55 inches or longer can be used. Alternatively, a plurality of functional panels can be arranged and used as one display region. Alternatively, a plurality of functional panels can be arranged and used as a multiscreen. Thus, the data processing device can be used for an electronic blackboard, an electronic bulletin board, digital signage, or the like. 
     Structure Example 3 of Data Processing Device 
     The data processing device can receive data from another device and display the data on the display portion  5230  (see  FIG. 18D ). Several options can be displayed. The user can choose some from the options and send a reply to a transmitter of the data. For example, the data processing device has a function of changing its display method in accordance with the illuminance of a usage environment. Thus, for example, the power consumption of a smartwatch can be reduced. Alternatively, for example, a smartwatch can display an image so as to be suitably used even in an environment under strong external light, e.g., outdoors in fine weather. 
     Structure Example 4 of Data Processing Device 
     For example, the display portion  5230  has a surface gently curved along a side surface of a housing (see  FIG. 18E ). The display portion  5230  includes a functional panel, and the functional panel has a function of performing display on the front surface, the side surfaces, the top surface, and the rear surface, for example. Thus, for example, a mobile phone can display data not only on its front surface but also on its side surfaces, its top surface, and its rear surface. 
     Structure Example 5 of Data Processing Device 
     For example, the data processing device can receive data via the Internet and display the data on the display portion  5230  (see  FIG. 19A ). A created message can be checked on the display portion  5230 . The created message can be sent to another device. The data processing device has a function of changing its display method in accordance with the illuminance of a usage environment, for example. Thus, the power consumption of a smartphone can be reduced. Alternatively, for example, a smartphone can display an image so as to be suitably used even in an environment under strong external light, e.g., outdoors in fine weather. 
     Structure Example 6 of Data Processing Device 
     A remote controller can be used as the input portion  5240  (see  FIG. 19B ). For example, the data processing device can receive data from a broadcast station or via the Internet and display the data on the display portion  5230 . An image of a user can be taken using the sensing portion  5250 . The image of the user can be transmitted. The data processing device can acquire a viewing history of the user and provide it to a cloud service. The data processing device can acquire recommendation data from a cloud service and display the data on the display portion  5230 . A program or a moving image can be displayed on the basis of the recommendation data. For example, the data processing device has a function of changing its display method in accordance with the illuminance of a usage environment. Accordingly, for example, a television system can display an image to be suitably used even when irradiated with strong external light that enters a room in fine weather. 
     Structure Example 7 of Data Processing Device 
     For example, the data processing device can receive educational materials via the Internet and display them on the display portion  5230  (see  FIG. 19C ). An assignment can be input with the input portion  5240  and sent via the Internet. A corrected assignment or the evaluation of the assignment can be obtained from a cloud service and displayed on the display portion  5230 . Suitable educational materials can be selected on the basis of the evaluation and displayed. 
     For example, the display portion  5230  can perform display using an image signal received from another data processing device. When the data processing device is placed on a stand or the like, the display portion  5230  can be used as a sub-display. Thus, for example, a tablet computer can display an image to be suitably used even in an environment under strong external light, e.g., outdoors in fine weather. 
     Structure Example 8 of Data Processing Device 
     The data processing device includes, for example, a plurality of display portions  5230  (see  FIG. 19D ). For example, the display portion  5230  can display an image that the sensing portion  5250  is capturing. A captured image can be displayed on the sensing portion. A captured image can be decorated using the input portion  5240 . A message can be attached to a captured image. A captured image can be transmitted via the Internet. The data processing device has a function of changing its shooting conditions in accordance with the illuminance of a usage environment. Accordingly, for example, a digital camera can display ab object in such a manner that an image is favorably viewed even in an environment under strong external light, e.g., outdoors in fine weather. 
     Structure Example 9 of Data Processing Device 
     For example, the data processing device of this embodiment is used as a master and another data processing device is used as a slave, whereby the other data processing device can be controlled (see  FIG. 19E ). As another example, part of image data can be displayed on the display portion  5230  and another part of the image data can be displayed on a display portion of another data processing device. Image signals can be supplied. With the communication portion  5290 , data to be written can be obtained from an input portion of another data processing device. Thus, a large display region can be utilized by using a portable personal computer, for example. 
     Structure Example 10 of Data Processing Device 
     The data processing device includes, for example, the sensing portion  5250  that senses an acceleration or a direction (see  FIG. 20A ). The sensing portion  5250  can supply data on the position of the user or the direction in which the user faces. The data processing device can generate image data for the right eye and image data for the left eye in accordance with the position of the user or the direction in which the user faces. The display portion  5230  includes a display region for the right eye and a display region for the left eye. Thus, a virtual reality image that gives the user a sense of immersion can be displayed on a goggles-type data processing device, for example. 
     Structure Example 11 of Data Processing Device 
     The data processing device includes, for example, an imaging device and the sensing portion  5250  that senses an acceleration or a direction (see  FIG. 20B ). The sensing portion  5250  can supply data on the position of the user or the direction in which the user faces. The data processing device can generate image data in accordance with the position of the user or the direction in which the user faces. Accordingly, the data can be shown together with a real-world scene, for example. An augmented reality image can be displayed on a glasses-type data processing device. 
     Structure Example 12 of Data Processing Device 
     The data processing device includes, for example, the display portion  5230  and the input portion  5240  (see  FIG. 21 ). The display portion  5230  and the input portion  5240  can be folded, for example. Moreover, the data processing device includes the communication portion  5290 . The communication portion  5290  can perform near field communication, for example. In addition, the data processing device includes the sensor portion  5250 . Thus, data can be displayed on the display portion  5230  that is larger than the housing. Data can be input using the input portion  5240  that is larger than the housing. In addition, data can be exchanged with another data processing device, for example. Specifically, an individual identification signal can be received from a ring-like data processing device worn on a user. Alternatively, an individual identification signal can be supplied to a security system. 
     Note that this embodiment can be combined with any of the other embodiments in this specification as appropriate. 
     In the case where there is an explicit description, X and Y are connected, in this specification and the like, for example, the case where X and Y are electrically connected, the case where X and Y are functionally connected, and the case where X and Y are directly connected are disclosed in this specification and the like. Accordingly, without being limited to a predetermined connection relationship, for example, a connection relationship shown in drawings or texts, a connection relationship other than one shown in drawings or texts is regarded as being disclosed in the drawings or the texts. 
     Here, X and Y each denote an object (e.g., a device, an element, a circuit, a wiring, an electrode, a terminal, a conductive film, or a layer). 
     Examples of the case where X and Y are directly connected include the case where an element that allows an electrical connection between X and Y (e.g., a switch, a transistor, a capacitor, an inductor, a resistor, a diode, a display element, a light-emitting element, and a load) is not connected between X and Y, and the case where X and Y are connected without the element that allows the electrical connection between X and Y (e.g., a switch, a transistor, a capacitor, an inductor, a resistor, a diode, a display element, a light-emitting element, and a load). 
     For example, in the case where X and Y are electrically connected, one or more elements that allow an electrical connection between X and Y (e.g., a switch, a transistor, a capacitor, an inductor, a resistor, a diode, a display element, a light-emitting element, and a load) can be connected between X and Y. Note that a switch has a function of being controlled to be turned on or off. That is, a switch has a function of being in a conduction state (on state) or a non-conduction state (off state) to control whether or not current flows. Alternatively, the switch has a function of selecting and changing a current path. Note that the case where X and Y are electrically connected includes the case where X and Y are directly connected. 
     An example of the case where X and Y are functionally connected is the case where one or more circuits that allow functional connection between X and Y (for example, a logic circuit (an inverter, a NAND circuit, a NOR circuit, or the like), a signal converter circuit (a DA converter circuit, an AD converter circuit, a gamma correction circuit, or the like), a potential level converter circuit (a power supply circuit (for example, a step-up circuit, a step-down circuit, or the like), a level shifter circuit for changing the potential level of a signal, or the like), a voltage source, a current source, a switching circuit, an amplifier circuit (a circuit capable of increasing signal amplitude, the amount of current, or the like, an operational amplifier, a differential amplifier circuit, a source follower circuit, a buffer circuit, or the like), a signal generator circuit, a memory circuit, a control circuit, or the like) can be connected between X and Y. For example, even when another circuit is interposed between X and Y, X and Y are functionally connected when a signal output from X is transmitted to Y. Note that the case where X and Y are functionally connected includes the case where X and Y are directly connected and the case where X and Y are electrically connected. 
     Note that in the case where there is an explicit description, X and Y are electrically connected, the case where X and Y are electrically connected (i.e., the case where X and Y are connected with another element or another circuit provided therebetween), the case where X and Y are functionally connected (i.e., the case where X and Y are functionally connected with another circuit provided therebetween), and the case where X and Y are directly connected (i.e., the case where X and Y are connected without another element or another circuit provided therebetween) are disclosed in this specification and the like. That is, in the case where there is an explicit description, being electrically connected, the same contents as the case where there is only an explicit description, being connected, are disclosed in this specification and the like. 
     Note that, for example, the case where a source (or a first terminal or the like) of a transistor is electrically connected to X through (or not through) Z 1  and a drain (or a second terminal or the like) of the transistor is electrically connected to Y through (or not through) Z 2 , or the case where a source (or a first terminal or the like) of a transistor is directly connected to one part of Z 1  and another part of Z 1  is directly connected to X while a drain (or a second terminal or the like) of the transistor is directly connected to one part of Z 2  and another part of Z 2  is directly connected to Y can be expressed as follows. 
     It can be expressed as, for example, “X, Y, a source (or a first terminal or the like) of a transistor, and a drain (or a second terminal or the like) of the transistor are electrically connected to each other, and X, the source (or the first terminal or the like) of the transistor, the drain (or the second terminal or the like) of the transistor, and Y are electrically connected to each other in this order”. Alternatively, it can be expressed as “a source (or a first terminal or the like) of a transistor is electrically connected to X, a drain (or a second terminal or the like) of the transistor is electrically connected to Y, and X, the source (or the first terminal or the like) of the transistor, the drain (or the second terminal or the like) of the transistor, and Y are electrically connected to each other in this order”. Alternatively, it can be expressed as “X is electrically connected to Y through a source (or a first terminal or the like) and a drain (or a second terminal or the like) of a transistor, and X, the source (or the first terminal or the like) of the transistor, the drain (or the second terminal or the like) of the transistor, and Y are provided in this connection order”. When the connection order in a circuit configuration is defined by an expression similar to the above examples, a source (or a first terminal or the like) and a drain (or a second terminal or the like) of a transistor can be distinguished from each other to specify the technical scope. 
     As another expression, it can be expressed as “a source (or a first terminal or the like) of a transistor is electrically connected to X through at least a first connection path, the first connection path does not include a second connection path, the second connection path is a path through the transistor and between the source (or the first terminal or the like) of the transistor and a drain (or a second terminal or the like) of the transistor, the first connection path is a path through Z 1 , the drain (or the second terminal or the like) of the transistor is electrically connected to Y through at least a third connection path, the third connection path does not include the second connection path, and the third connection path is a path through Z 2 ”. Alternatively, it can be expressed as “a source (or a first terminal or the like) of a transistor is electrically connected to X through Z 1  by at least a first connection path, the first connection path does not include a second connection path, the second connection path includes a connection path through the transistor, a drain (or a second terminal or the like) of the transistor is electrically connected to Y through Z 2  by at least a third connection path, and the third connection path does not include the second connection path”. Alternatively, it can be expressed as “a source (or a first terminal or the like) of a transistor is electrically connected to X by at least a first electrical path through Z 1 , the first electrical path does not include a second electrical path, the second electrical path is an electrical path from the source (or the first terminal or the like) of the transistor to a drain (or a second terminal or the like) of the transistor, the drain (or the second terminal or the like) of the transistor is electrically connected to Y by at least a third electrical path through Z 2 , the third electrical path does not include a fourth electrical path, and the fourth electrical path is an electrical path from the drain (or the second terminal or the like) of the transistor to the source (or the first terminal or the like) of the transistor”. When the connection path in a circuit configuration is defined by an expression similar to the above examples, a source (or a first terminal or the like) and a drain (or a second terminal or the like) of a transistor can be distinguished from each other to specify the technical scope. 
     Note that these expressions are examples and the expression is not limited to these expressions. Here, X, Y, Z 1 , and Z 2  denote an object (e.g., a device, an element, a circuit, a wiring, an electrode, a terminal, a conductive film, and a layer). 
     Even when independent components are electrically connected to each other in a circuit diagram, one component has functions of a plurality of components in some cases. For example, when part of a wiring also functions as an electrode, one conductive film has functions of both components: a function of the wiring and a function of the electrode. Thus, “electrical connection” in this specification includes in its category such a case where one conductive film has functions of a plurality of components. 
     REFERENCE NUMERALS 
     ACF 1 : conductive material, ANO: conductive film, C 21 : capacitor, C 22 : capacitor, C 31 : capacitor, CI: control data, CL: conductive film, CP: conductive material, DS: sensing data, FD: node, G 1 : conductive film, G 2 : conductive film, GCLK: signal, II: input data, IN: terminal, M 21 : transistor, M 31 : transistor, M 32 : transistor, N 21 : node, N 22 : node, OUT: terminal, P 1 : position data, PWC 1 : signal, PWC 2 : signal, RS: conductive film, S 1   g : conductive film, S 2   g : conductive film, SE: conductive film, SH: region, SW 21 : switch, SW 22 : switch, SW 23 : switch, SW 31 : switch, SW 32 : switch, SW 33 : switch, TX: conductive film, V 0 : conductive film, V 11 : data, VCOM 2 : conductive film, VCP: conductive film, VI: image data, VIV: conductive film, VLEN: conductive film, VPD: conductive film, VPI: conductive film, VR: conductive film, WX: conductive film, FPC 1 : flexible printed circuit board,  200 : data processing device,  210 ( 1 ): surface,  210 ( 2 ): surface,  210 ( 3 ): surface,  210 ( 4 ): surface,  210 ( 5 ): surface,  210 : arithmetic device,  211 : arithmetic portion,  212 : memory portion,  213 : artificial intelligence portion,  214 : transmission path,  215 : input/output interface,  220 : input/output device,  230 : display portion,  231 : region,  233 : control circuit,  234 : decompression circuit,  235 : image processing circuit,  238 : control portion,  240 : input portion,  241 : sensing region,  248 : control portion,  250 : sensor portion,  290 : communication portion,  501 C: insulating film,  501 D: insulating film,  504 : conductive film,  506 : insulating film,  508 : semiconductor film,  508 A: region,  508 B: region,  508 C: region,  510 : base material,  512 A: conductive film,  512 B: conductive film,  512 C: conductive film,  512 D: conductive film,  512 E: conductive film,  512 F: conductive film,  516 : insulating film,  518 : insulating film,  519 B: terminal,  520 : functional layer,  521 : insulating film,  524 : conductive film,  528 : insulating film,  530 G: pixel circuit,  530 S: pixel circuit,  550 : light-emitting element,  550 G: light-emitting element,  551 G: electrode,  551 S: electrode,  552 : electrode,  553 G: layer containing a light-emitting material,  553 S: layer containing a photoelectric conversion material,  573 : insulating film,  573 A: insulating film,  573 B: insulating film,  591 G: opening,  591 S: opening,  700 : functional panel,  700 TP: input/output panel,  702 B: pixel,  702 G: pixel,  702 R: pixel,  702 S: pixel,  702 N: pixel,  703 : pixel,  705 : sealant,  720 : functional layer,  770 : base material,  770 P: functional film,  771 : insulating film,  802 : sensor,  5200 B: data processing device,  5210 : arithmetic device,  5220 : input/output device,  5230 : display portion,  5240 : input portion,  5250 : sensor portion,  5290 : communication portion