Patent Publication Number: US-2023138472-A1

Title: Display device

Description:
FIELD OF INVENTION 
     The present disclosure relates to the field of display technology, and more particularly, to a display device. 
     BACKGROUND OF INVENTION 
     With development of the times, display panels have become more and more widely used. Most operations on the display panels are done via direct contact or remote control when users use the display panels as TV display devices remotely. 
     For example, the users need to walk to a front of the display panels to directly touch the display panels when operating by direct contact, which is very inconvenient. Meanwhile, operating by remote control is mainly achieved through pressing remotely control buttons, wherein when making selections in a complex interface, it is often necessary to perform multiple operations through the remote control to move a cursor to a corresponding icon, which is also very inconvenient. 
     In the current display devices, when the users use the display panels as TV display devices from a long distance, operations are very inconvenient. 
     SUMMARY OF INVENTION 
     The present disclosure provides a display device including a beam emitter and a display panel; 
     the beam emitter is configured to emit a first beam for marking an input position on the display panel, and perform an operation to the input position which marked by the first beam; 
     the display panel comprises a display screen body and a light control layer disposed on a light-emitting side of the display screen body, the light control layer comprises a photosensitive device configured to sense the first beam projected on the display panel, the photosensitive device is configured to output a sensing signal according to a sensing result; 
     wherein the light control layer further comprises a control module and a reading module, the control module is electrically connected to the photosensitive device to output a control signal which controlling turning on and turning off of the photosensitive device; the reading module and the photosensitive device is electrically connected to read the sensing signal output by the photosensitive device, the reading module configured to determine a projection position of the first beam on the display panel according to the sensing signal, and the reading module is further configured to perform corresponding operation to the projection position of the first beam. 
     In some embodiments, the light control layer includes: 
     a first gate electrode; 
     a gate insulating layer covering the first gate electrode; 
     a first semiconductor layer disposed on the gate insulating layer; 
     a first source-drain electrodes electrically connected to the first semiconductor layer; and 
     a first passivation layer covering the first source-drain electrodes and the first semiconductor layer; 
     wherein the photosensitive devices comprise the first gate electrode, the first semiconductor layer, and the first source-drain electrodes, and the reading module is electrically connected to the first source-drain electrodes. 
     In some embodiments, the first gate electrode is disposed on a surface of the display screen body. 
     In some embodiments, the light control layer further comprises a base substrate disposed on the display screen body, and the first gate electrode is disposed on a side of the base substrate away from the display screen body. 
     In some embodiments, the light control layer further comprises switching devices electrically connected to the photosensitive devices, one of the switching device includes: 
     a second gate electrode, wherein the second gate electrode and the first gate electrode are arranged in a same layer and spaced apart, and the control module is electrically connected to the second gate electrode; 
     a second semiconductor layer, wherein the second semiconductor layer and the first semiconductor layer are disposed in a same layer and spaced apart; and 
     a second source-drain electrodes, wherein the second source-drain electrodes is disposed in a same layer as the first source-drain electrodes and electrically connected to the second semiconductor layer, wherein the second source-drain electrodes are electrically connected to the first source-drain electrodes. 
     In some embodiments, a light-shielding layer is further disposed on the first passivation layer, and an orthographic projection of the light-shielding layer on the gate insulating layer covers an orthographic projection of the second semiconductor layer on the gate insulating layer. 
     In some embodiments, the display panel further comprises a touch device disposed on the light-emitting side of the display screen body, the touch device comprises an transmitting electrode and a receiving electrode spaced apart from each other, a touch capacitance is formed between the transmitting electrode and the receiving electrode, and a photosensitivity of the photosensitive device is less than a first presetting value. 
     In some embodiments, the transmitting electrode is disposed in a same layer as the first gate electrode, and the receiving electrode is disposed in a same layer as the first source-drain electrode. 
     In some embodiments, the transmitting electrode and the receiving electrode are disposed in a same layer. 
     In some embodiments, a side of the first passivation layer away from the display screen body is provided with a planarization layer, and the transmitting electrode and the receiving electrode are disposed on the planarization layer, and a second passivation layer covering the transmitting electrode and the receiving electrode is also disposed on the planarization layer. 
     In some embodiments, the transmitting electrode and the receiving electrode are disposed on a surface of the display screen body, the surface of the display screen body is provided with a second passivation layer covering the transmitting electrode and the receiving electrode, and the light control layer is disposed on a side of the second passivation layer away from the display screen body. 
     In some embodiments, the transmitting electrode and the receiving electrode are disposed in a same layer as the first gate electrode, or the transmitting electrode and the receiving electrode are arranged in a same layer as the first source-drain electrode. 
     In some embodiments, the photosensitive devices are as multipurpose as a touch device, and a photosensitivity of the photosensitive devices are greater than a second presetting value. 
     In some embodiments, the beam emitter includes: 
     a main body; 
     a light-emitting component disposed on the main body and configured to emit the first beam; 
     a projection button and an operation button both disposed on the main body; and 
     a control component disposed on the main body, wherein the control component is connected with the projection button, the operation button, and the light-emitting component, configured to control the light-emitting component to emit the first beam when the projection button is pressed and configured to control the reading module to perform the corresponding operation to the projection position of the first beam when the operation button is pressed. 
     In some embodiments, the beam emitter further emits a second beam to confirm the input position, and the beam emitter emits the second beam when the operation button is pressed, the photosensitive devices output a first sensing signal to the reading module when sensing the first beam, the photosensitive devices output a second sensing signal to the reading module when sensing the second beam, and the reading module compares the first sensing signal and the second sensing signal and performs a corresponding operation to the projection position of the second beam according to a comparison result, or the reading module performs the corresponding operation to a projection position of first beam according to the second sensing signal. 
     In some embodiments, a first light spot projected on the display panel by the first beam and a second light spot projected on the display panel by the second beam are located at any position on a surface of the display panel, and the first light spot and the second light spot both cover at least one orthographic projection of the photosensitive device on the surface of the display panel. 
     In some embodiments, the beam emitter is communicatively connected with the display panel, the beam emitter sends the control signal to the reading module when the operation button is pressed, and the reading module performs the corresponding operation to the projection position of the first beam according to the control signal. 
     In some embodiments, the first beam is different from the second beam. 
     In some embodiments, the first beam is different from the second beam in one or more of intensity, wavelength, beam cross-sectional size, and frequency. 
     In some embodiments, all of the photosensitive devices are distributed in an array, the light control layer further comprises a plurality of first signal lines arranged along a lateral direction and a plurality of second signal lines arranged along a longitudinal direction, the plurality of first signal lines are distributed at intervals in the longitudinal direction, the plurality of second signal lines are distributed at intervals in the lateral direction, each one of the plurality of first signal lines corresponds to and electrically connects to one row of the photosensitive devices, each one of the plurality of second signal lines corresponds to and electrically connects to one column of the photosensitive devices, all of the first signal lines are electrically connected to the control module to transmit the control signal to the photosensitive devices, and all of the second signal lines are electrically connected to the reading module to read the sensing signal output by the photosensitive devices. 
     By simultaneously integrating the light control function and the touch function in the display panel, the display panel has both the light control function and the touch function. At the same time, the display panel can be used with the beam emitter when it needs to be operated remotely, so that the presenter can operate the display panel by holding and using the beam emitter, and meanwhile quickly realize an input position conversion by moving the beam emitter, which is convenient and fast for remote operation of the display panel. 
    
    
     
       DESCRIPTION OF FIGURES 
       The technical solutions and other beneficial effects of the present disclosure will be apparent through the detailed description of the specific implementation of the present disclosure in conjunction with the accompanying figures. 
         FIG.  1    is a schematic structural diagram of a display device of one embodiment of the present disclosure. 
         FIG.  2    is a schematic structural diagram of a beam emitter of one embodiment of the present disclosure. 
         FIG.  3    is a schematic diagram of a first light spot on a display panel of one embodiment of the present disclosure. 
         FIG.  4    is a schematic structural diagram of a first structure of a display panel of embodiment 1 of the present disclosure. 
         FIG.  5    is a schematic structural diagram of a second structure of the display panel of embodiment 1 of the present disclosure. 
         FIG.  6    is a schematic structural diagram of a display panel of embodiment 2 of the present disclosure. 
         FIG.  7    to  FIG.  11    are schematic diagrams of a manufacturing process of the display panel of embodiment 2 of the present disclosure. 
         FIG.  12    is a schematic structural diagram of a display panel of embodiment 3 of the present disclosure. 
         FIG.  13    to  FIG.  16    are schematic diagrams of the manufacturing process of the display panel of embodiment 3 of the present disclosure. 
         FIG.  17    is a schematic structural diagram of a display panel of embodiment 4 of the present disclosure. 
         FIG.  18    to  FIG.  21    are schematic diagrams of the manufacturing process of the display panel of embodiment 4 of the present disclosure. 
         FIG.  22    is a schematic structural diagram of a display panel of embodiment 5 of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     In order to make the purpose, technical solutions and effects of the present disclosure clearer, the present disclosure will be described in further detail below with reference to the accompanying figures and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, and are not used to limit the present disclosure. 
     The present disclosure is directed to the technical problem of inconvenient operation when a user uses a display panel as a television display device from a long distance in the currently display device. This present disclosure can solve the above problems. 
     Embodiment 1 
     A display device, as shown in  FIG.  1   , the display device includes a beam emitter  20  and a display panel  10 . 
     Specifically, the beam emitter  20  is configured to emit a first beam for marking an input position on the display panel  10 , and perform an operation to the input position which marked by the first beam. 
     It should be noted that the first beam is a positioning beam, which is provided to position a point which needs to be controlled by light on the display panel  10 . That is, to mark an input position on the display panel  10 , the first beam is a visible light, so that human eyes can see where the first beam is projected on the display panel  10 . 
     Specifically, the display panel  10  includes a display screen body  11  and a light control layer  12  disposed on a light-emitting side of the display screen body  11 . The light control layer  12  includes photosensitive devices  125  configured to sense the first beam projected on the display panel  10 , and the photosensitive devices  125  are configured to output a sensing signal according to a sensing result. 
     It should be noted that the photosensitive devices  125  may be various types of photosensitive devices  125 , such as a photodiode, a photosensitive complementary metal oxide semiconductor (CMOS), or a photoconductive thin film transistor (TFT), etc. 
     It should be noted that the photosensitive devices  125  are distributed at a display area of the display screen body  11 . The plurality of photosensitive devices  125  may also be provided in the frame area of the display screen body  11  when the display screen body  11  has a frame area and the frame area can be used for display. 
     Specifically, the light control layer  12  further includes a control module  121  and a reading module  122 . The control module  121  is electrically connected to the photosensitive device  125  to output a control signal which controls turning on and turning off of the photosensitive device  125 . The reading module  122  is electrically connected to the photosensitive device  125  to read the sensing signal of the photosensitive device  125 . The reading module  122  is configured to read the sensing signal output by the photosensitive device  125 , is configured to determine a projection position of the first beam on the display panel  10  according to the sensing signal, and is further configured to perform corresponding operation to the projection position of the first beam. 
     It should be noted that when the display panel  10  needs to be operated remotely, for example, when displaying through the display panel  10  in a conference room, the presenter hand holds the beam emitter  20 , wherein the beam emitter  20  is configured to emit a first beam for marking an input position which will be operated on the display panel  10 , and then performs an operation to the input position which is marked by the first beam emitted by the beam emitter  20 . The reading module  122  is further configured to perform corresponding operation to the projection position of the first beam, for example, determining operations, handwriting operations, dragging light spots, etc., thereby the remote operation of the display panel  10  can be achieved. At the same time, moving the beam emitter  20  can quickly achieve a change of the input position, making the remote operation of the display panel  10  convenient and fast. 
     In one embodiment, the plurality of photosensitive devices  125  may be distributed in an array, and the light control layer  12  further includes a plurality of first signal lines  123  arranged along a lateral direction and a plurality of second signal lines  124  arranged along a longitudinal direction, wherein the plurality of first signal lines  123  are spaced by intervals in the longitudinal direction, and the plurality of second signal lines  124  are spaced by intervals in the lateral direction, wherein one first signal line  123  corresponds to and electrically connects to one row of the photosensitive devices  125 , and one second signal line  124  corresponds to and electrically connects to one column of the photosensitive devices  125 . All of the first signal lines  123  are electrically connected to the control module  121  for transmitting a control signal to the photosensitive devices  125 , and all of the second signal lines  124  are electrically connected to the reading module  122  for reading the sensing signal output by the photosensitive device  125 . 
     In one embodiment, as shown in  FIGS.  1  and  2   , the beam emitter  20  includes a main body  21 , wherein a light-emitting component, a projection button  25 , an operation button  26 , and a control component  27  are disposed on the main body  21 . 
     Specifically, the light-emitting component is configured to emit the first beam and a second beam, and the light-emitting component includes a light source  22 , a power source  23  connected to the light source  22 , and an optical component  24  disposed on the light-emitting side of the light source  22 . The beam emitted by the light source  22  is adjusted by the optical component  24  and projected onto the display panel  10 . 
     Specifically, the control component  27  is connected to the projection button  25 , the operation button  26 , and the light-emitting component. The control component  27  is configured to control the light-emitting component to emit the first beam when the projection button  25  is pressed, and control the reading module  122  to perform a corresponding operation on the projection position of the first beam when the operation button  26  is pressed. 
     It should be noted that when it is required to operate to the display panel  10 , pressing the projection button  25  will allow the light-emitting component of the beam emitter  20  to emit the first beam. After the first beam is projected on the display panel  10  at the position to be operated, pressing the operation button  26  will allow the reading module  122  to perform a corresponding operation on the projection position of the first beam. By pressing the projection button  25  and the operation button  26 , the beam emitter  20  realizes a function similar to a mouse, and does not require a plane like a mouse, and therefore can be operated simply and conveniently. 
     It should be noted that for ease of operation, the light source  22  may be kept turned on after pressing the projection button  25 , that is, the light source  22  keeps emitting beams, and after pressing the projection button  25  again, the light source  22  is turned off. 
     It should be noted that the main body  21  has an accommodating cavity. The light-emitting component and the control component  27  may be disposed in the accommodating cavity, and a portion of the projection button  25  and a portion of the operation button  26  extend into the accommodating cavity to connect with the control component  27 . The projection button  25  and the operation button  26  may be located on the same side of the main body  21 , and the projection button  25  and the operation button  26  may also be located on both sides of the main body  21 , respectively. 
     Specifically, a specific operation mode can be adopted to the beam emitter  20  for achieving more functions, for example, rotating the beam emitter  20  clockwise or/and counterclockwise for the operation such as handwriting, closing the display panel  10 , opening the setting file, or selecting large-scale range; pressing the operation button  26  and then rotating the beam emitter  20  clockwise or/and counterclockwise for the operation such as handwriting, closing the display panel  10 , opening the setting file, or selecting large-scale range; pressing the button  26  and then sliding the beam emitter  20  for the operation such as handwriting, closing the display panel  10 , opening the setting file, or selecting large-scale range. 
     In one embodiment, the beam emitter  20  further emits a second beam to confirm the input position on the display panel, and the beam emitter  20  emits the second beam when the operation button  26  is pressed; the photosensitive devices  125  output a first sensing signal to the reading module  122  when sensing the first beam, the photosensitive devices  125  output a second sensing signal to the reading module  122  when sensing the second beam, and the reading module  122  compares the first sensing signal and the second sensing signal, and performs a corresponding operation to the projection position of the second beam according to a comparison result, or the reading module  122  performs a corresponding operation to the projection position of the first beam according to the second sensing signal. 
     It should be noted that the second beam is a trigger beam for performing a light control operation on the display panel  10 , and the second beam may be visible light or invisible light. 
     It should be noted that the first beam and the second beam may be laser light or a beam formed by concentrating scattered light. The first beam and the second beam may be red beams to facilitate human eyes to see the position of the beam projected on the display panel  10 , and the first beam and the second beam may also be white, yellow or other color beams. 
     It should be noted that the first beam and the second beam are different, so that when the first beam is projected on the display panel  10 , the light control operation will not occur on the display panel  10 , and after the second beam is projected on the display panel  10 , the display panel  10  then performs a corresponding light control operation; the first beam differs from the second beam in one or more of intensity, wavelength, cross-sectional size of beam, and frequency. 
     In another embodiment, the beam emitter  20  is communicatively connected with the display panel  10 , and when the operation button  26  is pressed, the beam emitter  20  sends a control signal to the reading module  122 , and the reading module  122  performs corresponding operations on the projection position of the first beam according to the control signal. 
     It should be noted that the beam emitter  20  and the display panel  10  can be connected to each other via a wireless direction such as Bluetooth, infrared, or wireless network, and the beam emitter  20  and the display panel  10  can also be connected by wire connection such as connected by a data transmission line to achieve communicative connection. 
     When the beam emitter  20  communicatively connects with the display panel  10 , the beam emitter  20  further includes a gyroscope. During fast movement of the beam emitter  20 , acceleration and angular acceleration information of the gyroscope is used to correct the position coordinates of the first beam projected on the display panel  10  to make the operation more accurate and reduce delay control. 
     Specifically, as shown in  FIG.  2    and  FIG.  3   , a first light spot  30  covers at least one orthographic projection of the photosensitive devices  125  on the surface of the display panel  10  when the first light spot  30  projected on the display panel  10  by the first beam is located at any position on the surface of the display panel  10 . 
     In one embodiment of the present disclosure, the beam emitter  20  also emits the second beam. When a second light spot projected by the second beam on the display panel  10  is located at any position on the surface of the display panel  10 , the second light spot covers an orthographic projection of the photosensitive devices  125  on the surface of the display panel  10 . 
     It should be noted that by designing the distributed density of the plurality of photosensitive device  125 , the distributed density of the plurality of photosensitive devices  125  are matched with the sizes of the first light spot  30  and the second light spot, so that when the first light spot  30  and the second light spot are located on the display panel  10  at any position, they can cover the photosensitive devices  125 , so that any position of the display panel  10  can be operated by the beam emitter  20 . 
     It should be noted that the overall shapes of the first light spot  30  and the second light spot may be circular, square, or trapezoidal; the diameter of the first light spot  30  and the second light spot is greater than 5 mm when the shapes of the first light spot  30  and the second light spot are circular. 
     In one embodiment, the reading module  122  can read and filter the plurality of sensing signals output from the photosensitive devices  125  to determine the position of the photosensitive devices  125  which is located at a central area of the first light spot  30 , and performs an operation on the position corresponding to the central area of the first light spot  30  on the display panel  10  to prevent misoperation from occurring when the first light spot  30  and the second light spot are located at any position of the display panel  10  and cover a plurality of photosensitive devices  125 . 
     In one embodiment, a diffuser lens  40  is disposed on a light-emitting side of the beam emitter  20 , and the diffuser lens  40  is configured to increase the scattering angle θ of the light emitted from the beam emitter  20 . 
     It should be noted that taking the Gaussian laser emitted by the beam emitter  20  as an example, the diffuser lens  40  increases the scattering angle θ of the Gaussian laser, so that a light spot with a greater diameter can be formed at a suitable distance, and the required laser density of the display panel  10  can be reduced while not significantly increasing the diameter of the beam emitted by the beam emitter  20 . 
     As shown in  FIG.  4   , the light control layer  12  includes a first gate electrode  125   a , a gate insulating layer  127  covering the first gate electrode  125   a , a first semiconductor layer  125   b  disposed on the gate insulating layer  127 , a first source-drain electrode  125   c  electrically connected to the first semiconductor layer  125   b , and a first passivation layer  128  covering the first source-drain electrode  125   c  and the first semiconductor layer  125   b.    
     In one embodiment of the present disclosure, the photosensitive devices  125  include the first gate electrode  125   a , the first semiconductor layer  125   b , and the first source-drain electrode  125   c , wherein the reading module  122  is electrically connected to the first source-drain electrode  125   c.    
     It should be noted that the first semiconductor layer  125   b  is made of a photosensitive semiconductor material, and a resistance of the first semiconductor layer  125   b  changes when the beam emitted by the beam emitter  20  is irradiated on the photosensitive devices  125 , thereby producing a readout sensing signal read by the reading module  122 . 
     It should be noted that the first semiconductor layer  125   b  may be formed of a hydrogenated amorphous silicon. 
     Specifically, the light control layer  12  further includes a switching device  126  electrically connected to the photosensitive devices  125 , and the switching device  126  includes a second gate electrode  126   a , a second semiconductor layer  126   b , and a second source-drain electrode  126   c.    
     In one embodiment of the present disclosure, the second gate electrode  126   a  and the first gate electrode  125   a  are arranged in the same layer and spaced apart, and the control module  121  is electrically connected to the second gate electrode  126   a . The second semiconductor layer  126   b  and the first semiconductor layer  125   b  are disposed in the same layer and spaced apart. The second source-drain electrode  126   c  is disposed in the same layer as the first source-drain electrode  125   c  and is electrically connected to the second semiconductor layer  126   b , and the second source-drain electrode  126   c  is electrically connected to the first source-drain electrode  125   c  to control the turning on and turning off of the photosensitive devices  125 . 
     It should be noted that the control module  121  inputs a control signal to the second gate electrode  126   a  to control the turning on and turning off of the switching device  126 , thereby controlling the turning on and turning off of the photosensitive devices  125 . 
     It should be noted that the first gate electrode  125   a  and the second gate electrode  126   a  can be made from the same material and be formed by the same process; the first semiconductor layer  125   b  and the second semiconductor layer  126   b  can use the same material and be formed by the same process; and the first source-drain electrode  125   c  and the second source-drain electrode  126   c  can use the same material and be formed through the same process, thereby reducing the number of processes and the production cost. 
     In one embodiment of the present disclosure, a light-shielding layer  50  is further disposed on the first passivation layer  128 , and an orthographic projection of the light-shielding layer  50  on the gate insulating layer  127  covers an orthographic projection of the second semiconductor layer  126   b  on the gate insulating layer  127  to prevent the beam emitted by the beam emitter  20  from affecting the normal use of the switching device  126 . 
     In one embodiment, a conductive metal layer  60  is further disposed on the first passivation layer  128 , and the conductive metal layer  60  is in contact with the first source-drain electrode  125   c  through via holes, and the first source-drain electrode  125   c  may be electrically connected to the reading module  122  through the conductive metal layer  60 . 
     Specifically, the display panel  10  further includes an encapsulation layer  16  disposed on a side of the light control layer  12  away from the display screen body  11 , the encapsulation layer  16  may be an encapsulation cover plate or a film encapsulation layer, wherein the encapsulation cover plate may be a plastic cover plate or a glass cover plate, and the thin film encapsulation layer may be formed by alternately laminating organic layers and inorganic layers. 
     It should be noted that when the encapsulation layer  16  is an encapsulation cover plate, the encapsulation layer  16  is installed and fixed above the light control layer  12  through a first optical adhesive layer  14 . 
     In a first embodiment, the first gate electrode  125   a  is disposed on a surface of the display screen body  11 , that is, the light control layer  12  is directly integrated on the display screen body  11  to decrease an overall thickness of the display panel  10 . 
     In a second embodiment, as shown in  FIG.  5   , the light control layer  12  further includes a base substrate  129  disposed on the display screen body  11 , and the first gate electrode  125   a  is disposed on a side away from the display screen body  11  of the base substrate  129 , that is, the light control layer  12  is attached to the display screen body  11  in a hanging manner. Therefore, the display screen body  11  and the light control layer  12  can be manufactured separately, and the light control layer  12  can be installed on the display screen body  11  to facilitate the production of the display panel  10 . 
     In one embodiment of the present disclosure, the light control layer  12  is installed and fixed on the display screen body  11  through a second optical adhesive layer  15  on when the light control layer  12  is attached to the display screen body  11  in the hanging manner. 
     In the first embodiment and the second embodiment, the first optical adhesive layer  14  is disposed on the first passivation layer  128  and covers the light-shielding layer  50 , and the encapsulation layer  16  is installed and fixed on the light control layer  12  by the first optical adhesive layer  14  when the encapsulation layer  16  is an encapsulation cover plate. 
     Specifically, the display screen body  11  may be a liquid crystal display (LCD) screen body, an organic light-emitting diode (OLED) display body, a light-emitting diode (LED) display screen body, or a laser display body, etc. 
     As shown in  FIG.  5   , taking an LCD screen body as the display screen body  11  as an example, the display screen body  11  includes a color film substrate  112  and an array substrate  111  oppositely disposed, and a sealant layer  114  is disposed between the color film substrate  112  and the array substrate  111 . A cavity is formed between the sealant layer  114 , the color filter substrate  112 , and the array substrate  111 , and a liquid crystal layer  113  is disposed in the cavity. 
     In one embodiment, the array substrate  111  includes a first substrate  111   a  and an array layer  111   b  disposed on a side of the first substrate  111   a  close to the color filter substrate  112 , and the color filter substrate  112  includes a second substrate  112   a , and a color filter layer  112   b  disposed on a side close to the array substrate  111  of the second substrate  112   a.    
     In one embodiment, the light control layer  12  may be disposed on a side away from the array substrate  111  of the color filter substrate  112 , and an optical element such as a polarizer may be disposed between the light control layer  12  and the color filter substrate  112 . 
     Embodiment 2 
     A display device, as shown in  FIG.  6   , is different from the embodiment 1 in that the display panel  10  further includes a touch device  13  disposed on the light-emitting side of the display screen body  11 . The touch device  13  includes a transmitting electrode  131  and a receiving electrode  132  spaced apart, and a touch capacitor is formed between the transmitting electrode  131  and the receiving electrode  132 . 
     It should be noted that a touch capacitance is formed between the transmitting electrode  131  and the receiving electrode  132 , and the touch capacitance is a mutual capacitance. A touch capacitance changes when a finger touches the display panel  10 , and the touch device  13  sends a touch signal to the driving module of the display panel  10 . The driving module determines the touch position according to the touch signal and performs corresponding operation to the touch position. Accordingly, the display panel  10  has both the light control function and the touch control function. The touch panel function can be used to quickly and conveniently operate the display panel  10  when the display panel  10  is used as a device such as a mobile phone or a tablet, thereby realizing quick and convenient operation of the display panel  10  through the light control function when the display panel  10  is used as a TV or other device. 
     Specifically, the transmitting electrode  131  and the first gate electrode  125   a  are disposed in the same layer, and the receiving electrode  132  and the first source-drain electrode  125   c  are disposed in the same layer, thereby integrating the touch device  13  into the light control layer  12 , on the premise that the display panel  10  has both the light control capability and the touch control capability, preventing the area of the display panel  10  from increasing. 
     It should be noted that the transmitting electrode  131  may use the same material and be formed through the same process as the first gate electrode  125   a , and the receiving electrode  132  may use the same material and be formed through the same process as the first source-drain electrode  125   c , to reduce production processes and save costs. 
     Specifically, a plurality of transmitting electrodes  131  are distributed on the same layer at intervals, and the plurality of transmitting electrodes  131  may be distributed uniformly or discretely; the plurality of receiving electrodes  132  may be integrally formed to form a grid-like structure, the plurality of receiving electrodes  132  may be spaced apart and electrically connected by a connecting line  70  to form a grid-like structure, so that the display panel  10  has a touch function at any position. 
     Specifically, a photosensitivity of the photosensitive devices  125  is less than a first presetting value. 
     It should be noted that the greater the sensitivity of the photosensitive devices  125 , the more sensitive it is to the induction of light. An intensity of the beam emitted by an ordinary-size small beam emitter  20  is about 2000 lux, and an intensity of indoor light and ambient light is about 400 lux. By designing the photosensitivity of the photosensitive devices  125 , the photosensitivity of the photosensitive devices  125  is reduced, and the light control device is prevented from being induced and causing misoperation when the display panel  10  is touch-operated. The first presetting value may be selected based on the actual situation so that the photosensitive devices  125  do not induce weak light such as indoor lights and ambient light, and at the same time, the photosensitive devices  125  may sense the strong light emitted by the beam emitter  20 . 
     As shown in  FIG.  7    to  FIG.  11   ,  FIG.  7    to  FIG.  11    are schematic diagrams of a manufacturing process of the display panel  10  in the embodiment 2. 
     As shown in  FIG.  7   , a first metal layer is formed on the base substrate  129 , and the first metal layer is patterned to form the transmitting electrode  131 , the first gate electrode  125   a , and the second gate electrode  126   a  which are spaced apart. 
     As shown in  FIG.  8   , a gate insulating layer  127  which covers the transmitting electrode  131 , the first gate electrode  125   a  and the second gate electrode  126   a  is formed; a semiconductor layer is formed on the gate insulating layer  127 , and is patterned to form a first semiconductor layer  125   b  and a second semiconductor layer  126   b , and then a second metal layer is formed on the first semiconductor layer  125   b  and the second semiconductor layer  126   b ; a half-tone mask is used to pattern the second metal layer to form a receiving electrode  132 , a first source-drain electrode  125   c  connected to the first semiconductor layer  125   b , and a second source-drain electrode  126   c  connected to the semiconductor layer  126   b.    
     As shown in  FIG.  9   , a passivation layer  128  which covers the receiving electrode  132 , the first semiconductor layer  125   b , the first source-drain electrode  125   c , the second semiconductor layer  126   b , and the second source-drain electrode  126   c  is formed; a light-shielding layer  50  is formed on a region corresponding to the second semiconductor layer  126   b  and the first passivation layer  128 ; and after forming a via hole that extends to the second source-drain electrode  126   c , a conductive metal layer  60  that fills the via hole is formed on the first passivation layer  128 . 
     As shown in  FIG.  10   , a first optical adhesive layer  14  which covers the light-shielding layer  50  and the conductive metal layer  60  is formed, and an encapsulation cover plate is pasted on the first optical adhesive layer  14  to form an external function layer integrating touch function and light control function. 
     As shown in  FIG.  11   , a second optical adhesive layer  15  is coated on a surface of the display screen body  11 , and the external functional layer is adhered and fixed on the display screen body  11  through the second optical adhesive layer  15 . 
     Embodiment 3 
     A display device, as shown in  FIG.  12   , is different from the second embodiment in that the transmitting electrode  131  and the receiving electrode  132  are arranged in the same layer, and a planarization layer  17  is disposed on one side away from the display screen body  11  of the first passivation layer  128 . The transmitting electrode  131  and the receiving electrode  132  are disposed on the planarization layer  17 , and the planarization layer  17  is further provided with a second passivation layer  18  covering the transmitting electrode  131  and the receiving electrode  132 . 
     It should be noted that, by integrating the touch device  13  above the light control layer  12 , the display panel  10  can be prevented from defecting caused by the arrangement of the touch device  13  and the light control device interfering with each other, and it is also improves touch sensitivity of the display panel  10 . Meanwhile, the transmitting electrode  131  and the receiving electrode  132  are arranged in the same layer, thereby reducing the overall thickness of the display panel  10 . An electric field between the receiving electrode  132  and the transmitting electrode  131  at the corresponding area on the display panel  10  changes when a finger touches the display panel  10 , and the light control device sends a touch signal to the driving module of the display panel  10 . The driving module determines a touch position according to the touch signal and performs corresponding operations on the touch position. 
     Specifically, a plurality of the receiving electrodes  132  may be spaced apart from each other, wherein each two adjacent receiving electrodes  132  are electrically connected by a connecting line  70  on the second passivation layer  18  to form a mesh structure. 
     It should be noted that all of the receiving electrodes  132  are electrically connected by the connecting line  70  to form the mesh structure, so as to achieve the purpose that any position on the display panel  10  will have a touch function, and the connecting line  70  and the receiving electrodes  132  are disposed in different film layers, so as to prevent short circuiting between the connecting line  70  and the transmitting electrode  131 . 
     In one embodiment, the planarization layer  17  is disposed on the first passivation layer  128  and covers the light-shielding layer  50  and the conductive metal layer  60 ; the first optical adhesive layer  14  is disposed on the second passivation layer  18  and covers the connecting line  70 . 
     It should be noted that  FIG.  12    only illustrates the case where the touch device  13  is disposed above the light control layer  12 . In actual implementation, the transmitting electrode  131  and the receiving electrode  132  may also be provided in the same layer as the first gate electrode  125   a  or the first source-drain electrodes  125   c , and the transmitting electrode  131  and the receiving electrode  132  may also be disposed on the base substrate  129 . 
     As shown in  FIG.  13    to  FIG.  16   ,  FIG.  13    to  FIG.  16    are schematic diagrams of the manufacturing process of the display panel of Embodiment 3 of the present disclosure. 
     As shown in  FIG.  13   , a first metal layer is formed on the base substrate  129 , and the first metal layer is patterned to form a first gate electrode  125   a  and a second gate electrode  126   a  spaced apart; a gate insulating layer  127  covering the first gate electrode  125   a  and the second gate electrode  126   a  is formed; a semiconductor layer is formed on the gate insulating layer  127 , and the semiconductor layer is patterned to form the first semiconductor layer  125   b  and the second semiconductor layer  126   b  spaced apart; a second metal layer is formed on the gate insulating layer  127 , the first semiconductor layer  125   b , and the second semiconductor layer  126   b , and is patterned to form a first source-drain electrode  125   c  and a second source-drain electrode  126   c ; a first passivation layer  128  covering the first semiconductor layer  125   b , the first source-drain electrode  125   c , the second semiconductor layer  126   b , and the second source-drain electrode  126   c  is formed; a light-shielding layer  50  is formed on a region corresponding to the second semiconductor layer  126   b  on the first passivation layer  128 ; and after a via hole extending to the surface of the second source-drain electrode  126   c  is formed on the first passivation layer  128 , a conductive metal layer  60  covering the via hole is formed on the first passivation layer  128 . 
     As shown in  FIG.  14   , a planarization layer  17  covering the light-shielding layer  50  and the conductive metal layer  60  is formed, and the transmitting electrode  131  and the receiving electrode  132  are formed and spaced apart from each other on the planarization layer  17 . 
     As shown in  FIG.  15   , a second passivation layer  18  covering the transmitting electrode  131  and the receiving electrode  132  is formed; a connection hole connecting to the surface of the receiving electrode  132  is formed on the second passivation layer  18 ; a connecting line  70  connecting two adjacent receiving electrodes  132  is filled on the second passivation layer  18 ; and after forming the first optical adhesive layer  14  covering the connecting line  70 , the encapsulation cover is attached to the first optical adhesive layer  14  to form an external functional layer with integrated touch function and light control function. 
     As shown in  FIG.  16   , a second optical adhesive layer  15  is formed on the surface of the display screen body  11 , and the external functional layer is attached and fixed on the display screen body  11  through the second optical adhesive layer  15 . 
     Embodiment 4 
     A display device, as shown in  FIG.  17   , is different from the second embodiment in that the transmitting electrode  131  and the receiving electrode  132  are disposed in the same layer, and the transmitting electrode  131  and the receiving electrode  132  are disposed on the surface of the display screen body  11 . A second passivation layer  18  covering the transmitting electrode  131  and the receiving electrode  132  is disposed on the surface of the display screen body  11 , and the light control layer  12  is disposed on a side away from the display screen body  11  of the second passivation layer  18 . 
     It should be noted that by directly integrating the touch device  13  on the display screen body  11  in an outlay embedding manner, the light control layer  12  is disposed on a side of the second passivation layer  18  away from the display screen body  11 , and therefore can prevent the display panel  10  from defecting caused by the arrangement of the touch device  13  and the light control device interfering with each other, while also improving touch sensitivity of the display panel  10 . 
     In one embodiment, the light control layer  12  is attached to the second passivation layer  18  through the second optical adhesive layer  15 , and the second optical adhesive layer  15  is disposed on the second passivation layer  18  and covers the connecting line  70 . 
     Specifically, a plurality of the receiving electrodes  132  may be spaced apart from each other, wherein each two adjacent receiving electrodes  132  are electrically connected by a connecting line  70  on the second passivation layer  18  to form a mesh structure. 
     It should be noted that all of the receiving electrodes  132  are electrically connected by the connecting line  70  to form the mesh structure, so as to achieve the purpose that any position on the display panel  10  will have a touch function, and the connecting line  70  and the receiving electrodes  132  are disposed in different film layers, so as to prevent short circuiting between the connecting line  70  and the transmitting electrode  131 . 
     In one embodiment, the first optical adhesive layer  14  is disposed on the first passivation layer  128  and covers the light-shielding layer  50  and the conductive metal layer  60 . 
     It should be noted that  FIG.  17    only illustrates the case where the light control layer  12  is disposed above the touch device  13 . In actual implementation, the first gate electrode  125   a  and the second gate electrode  126   a  may also be disposed on the base substrate  129 . 
     As shown in  FIG.  18    to  FIG.  21   ,  FIG.  18    to  FIG.  21    are schematic diagrams of a manufacturing process of the display panel  10  in the Embodiment 4. 
     As shown in  FIG.  18   , a first gate electrode  125   a  and a second gate electrode  126   a  are formed and spaced apart on the base substrate  129 ; a gate insulating layer  127  covering the first gate  125   a  and the second gate  126   a  is formed; the first semiconductor layer  125   b  and the second semiconductor layer  126   b  are formed and spaced apart on the gate insulating layer  127 ; a first source-drain electrode  125   c  and a second source-drain electrode  126   c  are formed on the gate insulating layer  127 , the first semiconductor layer  125   b , and the second semiconductor layer  126   b ; a first passivation layer  128  covering the first semiconductor layer  125   b , the first source-drain electrode  125   c , the second semiconductor layer  126   b , and the second source-drain electrode  126   c  is formed; a light-shielding layer  50  is formed on a region corresponding to the second semiconductor layer  126   b  on the first passivation layer  128 ; after forming a via hole extending to the surface of the second source-drain electrode  126   c  on the first passivation layer  128 , a conductive metal layer  60  covering the via hole is formed on the first passivation layer  128 ; and after forming the first optical adhesive layer  14  covering the light shielding layer  50  and the conductive metal layer  60 , the encapsulation cover is attached to the first optical adhesive layer  14  to form the light control layer  12 . 
     As shown in  FIG.  19   , the transmitting electrode  131  and the receiving electrode  132  are formed on the display screen body  11  and spaced apart; a second passivation layer  18  covering the transmitting electrode  131  and the receiving electrode  132  is formed; a connection hole that extends to the surface of the receiving electrode  132  is formed on the second passivation layer  18 ; and a connecting line  70  connecting two adjacent receiving electrodes  132  is filled on the second passivation layer  18 . 
     As shown in  FIG.  20   , a second optical adhesive layer  15  covering the connecting line  70  is formed. 
     As shown in  FIG.  21   , the light control layer  12  is bonded and fixed to the second optical adhesive layer  15  to fix the light control layer  12  and the touch device  13  on the display screen body  11 . 
     Embodiment 5 
     A display device, as shown in  FIG.  22   , is different from embodiment 2 in that the photosensitive devices  125  are multipurpose as the touch device  13 . 
     It should be noted that when the display panel  10  needs to be operated remotely, when the first beam emitted by the beam emitter  20  is projected onto the display panel  10 , the photosensitive devices  125  output a sensing signal to the reading module  122  according to the sensing result. After the reading module  122  determines the projection position of the first beam on the display panel  10  according to the sensing signal, the reading module  122 , in cooperation with the operation of the beam emitter  20 , performs a corresponding operation to the projection position of the first beam to achieve light control function. The finger touches the display panel  10  when the display panel  10  needs to be operated by touch at close range. Then, the light intensity received by the photosensitive devices  125  at the touch position on the display panel  10  changes, and the photosensitive devices  125  send a touch signal to the display panel, and the driving module determines the touch position according to the touch signal and performs corresponding operations on the touch position. 
     It should be noted that by multipurpose the photosensitive devices  125  as the touch device  13 , on the premise of ensuring that the display panel  10  has both the light control function and the touch function, there is no need to add a film layer and a device, thereby reducing production costs and an overall thickness of the display panel  10 . 
     Specifically, a photosensitivity of the photosensitive devices  125  is greater than a second preset value. 
     It should be noted that the second preset value is greater than the first presetting value. The greater the photosensitivity of the photosensitive devices  125 , the more sensitive it is to the induction of light, and the photosensitivity of the photosensitive devices  125  can be enhanced by designing the photosensitivity of the photosensitive devices  125 . Therefore, the light intensity change when the finger touches the display panel  10  causes the sensing of the photosensitive devices  125 , and at the same time, can also reduce the intensity requirement of the beam emitted by the beam emitter  20 . The second preset value can be selected according to the actual situation, to ensure that the light intensity change causes the sensing of the photosensitive devices  125  when the finger touches the display panel  10 . 
     It should be noted that when the ambient light and indoor lights are too weak, the change in the light intensity of the reflected light can be detected in the form of supplementary backlight to complete the touch control function. 
     The beneficial effects of the present disclosure are: by simultaneously integrating the light control function and the touch function in the display panel  10 , the display panel  10  has both the light control function and the touch function. At the same time, the display panel can be used with the beam emitter  20  when it needs to be operated remotely, so that the presenter can operate the display panel  10  by holding and using the beam emitter  20 . Meanwhile, an input position fast conversion is realized by moving the beam emitter  20 , which is convenient and fast for remote operation of the display panel. 
     In summary, although the present disclosure has been disclosed as preferred embodiments above, the above preferred embodiments are not intended to limit the present disclosure. Those of ordinary skill in the art can make various changes and retouching without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure is subject to the scope defined by the claims.