ELECTRONIC DEVICE

An electronic device includes a substrate, a plurality of first pads, a plurality of sensing units and a plurality of test pads. The first pads are disposed on the substrate, the sensing units are disposed on the substrate and electrically connected to the first pads, and the test pads are disposed on the substrate and electrically connected to the sensing units.

BACKGROUND OF THE DISCLOSURE

1. Field of the Disclosure

The present disclosure relates to an electronic device, and more particularly to an electronic device including sensing units and display units.

2. Description of the Prior Art

With the technical developments of electronic devices, sensors with fingerprint identification function or other types of sensors are integrated into various electronic devices and widely used. Users can directly manage electronic devices through fingerprint identification. Additionally, fingerprints can be quickly identified and are difficult to forge; therefore, fingerprint identification technology can provide convenience and security. In recent years, industries have been dedicated to integrating fingerprint identification functions and display functions into the same electronic device while simultaneously improving the qualification rate of electronic devices.

SUMMARY OF THE DISCLOSURE

An embodiment of the present disclosure provides an electronic device, which includes a substrate, a plurality of first pads, a plurality of sensing units and a plurality of test pads. The first pads are disposed on the substrate, the sensing units are disposed on the substrate and electrically connected to the first pads, and the test pads are disposed on the substrate and electrically connected to the sensing units.

DETAILED DESCRIPTION

The contents of the present disclosure will be described in detail with reference to specific embodiments and drawings. It is noted that, for purposes of illustrative clarity and being easily understood by the readers, the following drawings may be simplified schematic diagrams of electronic devices or a portion of the electronic devices, and components therein may not be drawn to scale. The numbers and dimensions of the components in the drawings are just illustrative, and are not intended to limit the scope of the present disclosure.

Certain terms are used throughout the specification and the appended claims of the present disclosure to refer to specific components. Those skilled in the art should understand that electronic equipment manufacturers may refer to a component by different names, and this disclosure does not intend to distinguish between components that differ in name but not function. In the following description and claims, the terms “comprise”, “include” and “have” are used in an open-ended fashion, so they should be interpreted as “including but not limited to . . . ”.

Directional terms such as “up”, “down”, “front”, “back”, “left” and “right” used in the present disclosure are only directions with reference to the drawings. Therefore, the directional terms are used for illustration, and are not intended to limit the scope of the present disclosure. In the drawings, each drawing illustrates the general features of methods, structures and/or materials used in specific embodiments. However, these drawings should not be interpreted as defining or limiting the scope or characteristics of these embodiments. For example, the relative size, thickness and position of each layer, region and/or structure may be shrunk or enlarged for clarity.

It should be understood that when a component or layer is referred to as being “on” or “disposed on” another component or layer, or “connected to” another component or layer, it may be directly on the another component or layer or directly connected to the another component or layer, or there may be an interposed component or layer between the two components or layers (indirect case). Conversely, when a component is referred to as being “directly on” another component or layer, “directly disposed on” another component or layer, or “directly connected to” another component or layer, there are no interposed components or layers between the two components or layers. In addition, the arrangement relationship between different components may be explained by the content of the drawings.

An electrical connection may be a direct connection or an indirect connection. When two elements are electrically connected, the electrical signals may be transmitted by direct contact, and there are no other elements presented between the two elements. When two elements are electrically connected, the electrical signals may be transmitted through the intermediate element bridging the two elements. When it is mentioned “one element is directly electrically connected to another element”, it means that the element is directly electrically connected to another element without other elements presented between the two elements.

Terms “equal” or “the same” usually mean within 20% of a given value, or within 10%, 5%, 3%, 2%, 1% or 0.5% of the given value.

Terms “first”, “second”, “third”, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms may be used to distinguish different components in the specification. The same terms may not be used in the claims, and the components in the claims may be described by the terms “first”, “second”, “third”, etc. according to the order of the components presented in the claims. Thus, a first component discussed below may be termed as a second component in the claims without departing from the present disclosure.

It should be understood that according to the following embodiments, features of different embodiments may be replaced, recombined or mixed to constitute other embodiments without departing from the spirit of the present disclosure.

The electronic device of the present disclosure may include a display device, a backlight device, an antenna device, a sensing device or a tiled device, but not limited thereto. The electronic devices may be bendable, flexible or rollable electronic devices. The display device may include a non-self-luminous display device or a self-luminous display device, but not limited thereto. The antenna device may be a liquid crystal type antenna device or a non-liquid crystal type antenna device, and the sensing device may be a sensing device capable of sensing capacitance, light, thermal energy or ultrasonic waves, but not limited thereto.

Electronic components may include passive components and active components, such as capacitors, resistors, inductors, diodes, transistors, etc. The diodes may include light emitting diodes or photodiodes, but not limited thereto. The electronic device may include liquid crystal molecules, light emitting diodes (LED), quantum dot (QD) material, fluorescence material, phosphor, other suitable materials, or any combination thereof, but not limited thereto. The light emitting diode may include, for example, an organic light emitting diode (OLED), a mini light emitting diode (mini-LED), a micro light emitting diode (micro-LED) or quantum dots (QDs) light emitting diode (such as QLED, QDLED), other suitable light emitting diodes, or any combination thereof, but not limited thereto. The tiled device may include, for example, a tiled display device or a tiled antenna device, but not limited thereto. It should be noted that the electronic device can be any combination of the above devices, but not limited thereto.

A direction X, a direction Y and a direction Z are shown in the following drawings. The direction Z may be a normal direction or a top view direction. As shown inFIG.1, the direction Z may be perpendicular to a top surface1001of a substrate100. The direction X and the direction Y may be horizontal directions and may be perpendicular to the direction Z. As shown inFIG.1, the direction X and the direction Y may be parallel to the top surface1001of the substrate100, and the direction X may be perpendicular to the direction Y. The spatial relationship of the structure may be explained according to the direction X, the direction Y and the direction Z in the following drawings.

Please refer toFIG.1toFIG.3,FIG.1is a schematic diagram of an electronic device according to a first embodiment of the present disclosure,FIG.2is a schematic diagram of a sensing unit and display units according to the first embodiment of the present disclosure, andFIG.3is a partially enlarged schematic diagram of the electronic device according to the first embodiment of the present disclosure. An electronic device10of this embodiment may include the substrate100, the substrate100may include a sensing region AR (also referred to as an active region or a display region) and a non-sensing region PR (also referred to as a peripheral region), and the non-sensing region PR is adjacent to the sensing region AR and can be disposed on at least one side of the sensing region AR. As shown inFIG.1, the non-sensing region PR may surround the sensing region AR. The sensing region AR may provide the display function, light emitting function, detecting function and/or sensing function, but not limited thereto.

A material of the substrate100may include glass, quartz, sapphire, polymer (such as polyimide (PI) or polyethylene terephthalate, (PET)) and/or other suitable materials to be used as a flexible substrate or a rigid substrate, but not limited thereto. Additionally, a shape of a top view of the substrate100is not limited to a rectangular shape, and the substrate100may have any suitable shape.

The electronic device10may include a plurality of sensing units SU, a plurality of display units DU and a plurality of signal lines disposed on the substrate100, but not limited thereto. The sensing units SU and the display units DU may be disposed in the sensing region AR. In some embodiments, as shown inFIG.1, the display units DU may be disposed along the direction X, the sensing units SU may also be disposed along the direction X, and the sensing units SU and the display units DU may be alternately disposed in the direction Y, but not limited thereto.

The signal lines may be disposed in the sensing region AR and/or the non-sensing region PR. The signal lines may include a plurality of signal lines102(such as but not limited to switch signal lines), a plurality of power lines104, a plurality of signal lines106(such as but not limited to reset signal lines), a plurality of signal lines108(such as but not limited to bias voltage lines), a plurality of signal lines110(such as but not limited to read out lines), a plurality of scan lines101, a plurality of data lines1031, a plurality of data lines1032or other signal lines. In some embodiments (as shown inFIG.1toFIG.7), the signal lines110may also be used as data lines, but not limited thereto.

The signal lines102, the scan lines101, the signal lines106and the signal lines108may be extended in the direction X, and the power lines104, the signal lines110, the data lines1031and the data lines1032may be extended in the direction Y, but not limited thereto. The signal lines102, the signal lines106, the signal lines108and the scan lines101may cross the power lines104, the signal lines110, the data lines1031and the data lines1032, but not limited thereto.

As shown inFIG.2, in some embodiments, the sensing units SU may be optical sensors for example, and each of the sensing units SU may include a sensing element P1, a thin film transistor T1, a thin film transistor T2 and a thin film transistor T3, but not limited thereto. The sensing element P1 may include a photodiode, a PIN diode or other suitable photoelectric conversion elements, but not limited thereto.

The sensing element P1 may include a first end and a second end, the first end may be one of the P terminal or N terminal, and the second end may be the other one of the P terminal or N terminal. The first end of the sensing element P1 may be electrically connected to the signal line108. In some embodiments, the signal line108may provide a bias voltage so that the sensing element P1 can be operated under a negative bias. The second end of the sensing element P1 may be electrically connected to a gate of the thin film transistor T1 and a second end of the thin film transistor T2.

The gate of the thin film transistor T1 may be electrically connected to the second end of the sensing element P1 and the second end of the thin film transistor T2. A first end of the thin film transistor T1 may be electrically connected to the power line104. For example, the power line104may provide a VDD voltage to the thin film transistor T1, but not limited thereto. A second end of the thin film transistor T1 may be electrically connected to a first end of the thin film transistor T3. The thin film transistor T1 may be used as an amplification transistor to amplify the signal sensed by the sensing element P1, but not limited thereto. In addition, the first end and the second end of the thin film transistor mentioned in this disclosure may be, for example, a source and a drain or a drain and a source.

A gate of the thin film transistor T2 may be electrically connected to the signal line106. For example, the signal line106may provide a reset signal to the thin film transistor T2. A first end of the thin film transistor T2 may be electrically connected to the power line104. For example, the power line104may provide the VDD voltage to the thin film transistor T2, but not limited thereto. The second end of the thin film transistor T2 may be electrically connected to the second end of the sensing element P1 and the gate of the thin film transistor T1. The thin film transistor T2 may be used as a reset transistor and reset the sensing unit SU after the end of the sensing period or before the start of the sensing period.

A gate of the thin film transistor T3 may be electrically connected to the signal line102, a first end of the thin film transistor T3 may be electrically connected to the second end of the thin film transistor T1, and a second end of the thin film transistor T3 may be electrically connected to the signal line110. The thin film transistor T3 may be used as a reading transistor, and the thin film transistor T3 or the sensing unit SU can be controlled to output a sensing signal to the signal line110by the switch signal of the signal line102.

In some embodiments, the sensing units SU may be used as fingerprint sensors, iris sensors, retina sensors, face sensors, vein sensors, motion sensors, gesture sensors or other suitable sensors or a combination of at least two of the above, but not limited thereto. In other embodiments, the sensing units SU may include touch sensing functions, but not limited thereto. In other embodiments, the sensing units SU may also include capacitance sensors, ultrasonic sensors, infrared (IR) sensors or other suitable types of sensors.

In some embodiments, each of the display units DU may for example be a sub-pixel, but not limited thereto. As shown inFIG.2, the display units DU may be liquid crystal display units for example. Each of the display units DU may include a thin film transistor TD, a capacitor CL and a capacitor CS, but not limited thereto. A gate of the thin film transistor TD may be electrically connected to the scan line101, a first end of the thin film transistor TD may be electrically connected to the data line1031, the data line1032or the signal line110, and a second end of the thin film transistor TD may be electrically connected to the capacitor CL and the capacitor CS. The capacitor CL may for example be a liquid crystal capacitor, and the capacitor CS may for example be a storage capacitor, but not limited thereto.

The display units DU of the present disclosure are not limited to the liquid crystal display units, and the display units DU may also include other types of display units. For example, when the electronic device10is a self-luminous display device, the display unit DU may include at least the data line1031, the scan line101, two transistors, a capacitor and a light emitting unit, but not limited thereto. The light emitting unit may for example include an organic light emitting diode (OLED), a quantum light emitting diode (QLED or QDLED), an inorganic light emitting diode (LED), any other suitable light emitting element or a combination of the above. The inorganic light emitting diode may for example include mini LED or micro LED, but not limited thereto.

As shown inFIG.2, the display units DU may include a sub-pixel SP1, a sub-pixel SP2 and a sub-pixel SP3. The sub-pixel SP1 may be a red sub-pixel, the sub-pixel SP2 may be a green sub-pixel, and the sub-pixel SP3 may be a blue sub-pixel, but not limited thereto. The first end of the thin film transistor TD of the sub-pixel SP1 may be electrically connected to the data line1031, the first end of the thin film transistor TD of the sub-pixel SP2 may be electrically connected to the data line1032, and the first end of the thin film transistor TD of the sub-pixel SP3 may be electrically connected to the signal line110, but not limited thereto. Therefore, in some embodiments, the signal lines110may also be used as the data lines to transmit grayscale signals, thereby reducing the number of the signal lines and increasing the aperture ratio, but not limited thereto.

As shown inFIG.1, the non-sensing region PR of the substrate100may include a pad region112and a pad region114, the pad region112and the pad region114may be disposed on one side of the sensing region AR in the direction Y, and the pad region112may be disposed between the pad region114and the sensing region AR in the direction Y, but not limited thereto. The electronic device10may include a plurality of pads116(or may be referred to as the first pads) and a plurality of test pads118disposed on the substrate100. The pads116may be disposed in the pad region112, and the pads116may be arranged in at least one row along the direction X. The test pads118may be disposed in the pad region114, and the test pads118may be arranged in at least one row along the direction X. The pads116and the test pads118may be disposed on a same side of the sensing region AR.

The signal lines110may be extended from the sensing region AR to the non-sensing region PR. As shown inFIG.3, one of the signal lines110may be electrically connected to the corresponding one of the pads116, and therefore the sensing units SU may be electrically connected to the pads116. In some embodiments, the first ends of the thin film transistors TD of the sub-pixels SP3 may be electrically connected to the signal lines110, and therefore at least a portion of the display units DU (such as the sub-pixels SP3) may be electrically connected to the pads116, but not limited thereto. For example, as shown inFIG.3, one of the sub-pixels SP3 and one of the sensing units SU may be electrically connected to one of the signal lines110(such as the signal line1101, the signal line1102, the signal line1103or the signal line1104).

As shown inFIG.1andFIG.3, the non-sensing region PR of the substrate100may include a multiplexer region120, and the multiplexer region120may be disposed between the pad region112and the pad region114in the direction Y, but not limited thereto. The electronic device10may include a plurality of multiplexers122(or may be referred to as the first multiplexers) disposed on the substrate100. The structure of one of the multiplexers122is shown inFIG.3. The multiplexers122may be disposed in the multiplexer region120inFIG.1, and the multiplexers122may be connected between the pads116and the test pads118.

As shown inFIG.3, one of the multiplexers122may include a plurality of thin film transistors TR and a plurality of signal lines124. In some embodiments, the thin film transistors TR of the multiplexers122may be arranged in four transistor rows, each of the transistor rows may be extended in the direction X, and the gates of the thin film transistors TR in each of the transistor rows may be electrically connected to one of the signal lines124(such as the switch signal line).

For example, a signal line1101may be electrically connected to a pad1161, and the pad1161may be electrically connected to the thin film transistor TR in a transistor row TR1. A signal line1102may be electrically connected to a pad1162, and the pad1162may be electrically connected to the thin film transistor TR in a transistor row TR2. A signal line1103may be electrically connected to a pad1163, and the pad1163may be electrically connected to the thin film transistor TR in a transistor row TR3. A signal line1104may be electrically connected to a pad1164, and the pad1164may be electrically connected to the thin film transistor TR in a transistor row TR4. In some embodiments, the signal lines1101,1102,1103, and1104may for example output the sensing signals of the sensing units SU.

The signal line1101to the signal line1104and the pad1161to the pad1164may be electrically connected to one of the test pads118through thin film transistors TR in different transistor rows, and one of the test pads118may be electrically connected to four signal lines, thereby reducing the number of the signal lines or saving the space occupied by the signal lines. In other words, four pads (such as the pad1161to the pad1164) may be electrically connected to one of the test pads118through the thin film transistors TR in four transistor rows (such as the transistor row TR1 to the transistor row TR4).

In addition, the pad1161to the pad1164may be connected between the test pad118and the sensing units SU, and the test pad118may be electrically connected to the sensing units SU. Furthermore, the number of the pads116may be greater than the number of the test pads118.

In some embodiments, the thin film transistors TR in different transistor rows can be turned on by transmitting switch signals through different signal lines124, and the test signals can be transmitted to the corresponding sensing units SU through the pads116, thus the function of the sensing units SU can be checked through the test pads118. More specifically, the pads116may be electrically connected to a driving unit126, the driving unit126may provide test signals to the corresponding sensing units SU, and the test pads118may receive the test signals to determine whether the function of the sensing units SU is normal.

In some embodiments, the sensing units SU can be tested through the test pads118after the fabrication of the array substrate of the electronic device10is finished, or the sensing units SU can be tested through the test pads118after two substrates of electronic device10are adhered and the liquid crystal is filled. In this way, the unqualified products can be detected and the overall qualification rate of the electronic device10can be improved.

As shown inFIG.1, the electronic device10may include the driving unit126disposed on the substrate100and in the non-sensing region PR. The driving unit126may for example include an integrated circuit chip, but not limited thereto. The driving unit126may be electrically connected to the pads116, and the driving unit126may be electrically connected to the sensing units SU and display units DU (such as the sub-pixels SP3) through the pads116and the signal lines110. For example, the driving unit126may perform fingerprint identification based on the signals from the sensing units SU, or the driving unit126may transmit the grayscale signals to the sub-pixels SP3, but not limited thereto.

In some embodiments, the driving unit126may be disposed on the substrate100by a die bonding method. In some embodiments, the driving unit126may be electrically connected to the pads (such as the pads116) on the substrate100through a flexible printed circuit (FPC). In some embodiments, the driving unit126may be fabricated on a flexible film (i.e., chip on film (COF)) and electrically connected to the pads on the substrate100.

In addition, in the embodiments of the present disclosure, the data lines (such as the data lines1031,1032, and1033) may be extended from the sensing region AR to the non-sensing region PR, and the pads used for electrically connecting the data lines may be disposed in the pad region112. These pads may also be electrically connected to the driving unit126, and the driving unit126may transmit the grayscale signals to the display units DU (such as the sub-pixels SP1, the sub-pixels SP2 and the sub-pixels SP3), but not limited thereto. In addition, in some embodiments, the electronic device10may further include a plurality of multiplexers disposed between the sensing region AR and the pad region112in the direction Y, and these multiplexers may be connected between the signal lines110and the pads116, but not limited thereto.

The electronic devices of the present disclosure are not limited to the aforementioned embodiment. The following will continue to disclose other embodiments of the present disclosure. However, in order to simplify the description and highlight the differences between the embodiments, the same reference numerals are used to denote the same elements hereinafter, and the repeated portions will not be described again.

Please refer toFIG.4,FIG.4is a partially enlarged schematic diagram of an electronic device according to a second embodiment of the present disclosure. Different from the first embodiment, the thin film transistors TR and a plurality of thin film transistors TS of the multiplexers122may be arranged in two transistor rows in some embodiments.

For example, the signal line1101(such as the signal line that can output the sensing signal) may be electrically connected to the pad1161, and the pad1161may be electrically connected to one of the thin film transistors TR in the transistor row TR1. The signal line1102may be electrically connected to the pad1162, and the pad1162may be electrically connected to one of the thin film transistors TS in the transistor row TR2. The signal line1103may be electrically connected to the pad1163, and the pad1163may be electrically connected to another one of the thin film transistors TR in the transistor row TR1. The signal line1104may be electrically connected to the pad1164, and the pad1164may be electrically connected to another one of the thin film transistors TS in the transistor row TR2.

The signal line1101, the signal line1102, the pad1161and the pad1162may be electrically connected to a test pad1181through the thin film transistor TR (and/or the thin film transistor TS) in different transistor rows, and therefore the test pad1181may be electrically connected to two signal lines. In other words, two pads (such as the pad1161and the pad1162) may be electrically connected to one test pad1181through the thin film transistors (such as the thin film transistor TR and the thin film transistor TS) in two transistor rows (such as the transistor row TR1 and the transistor row TR2).

The signal line1103, the signal line1104, the pad1163, and the pad1164may be electrically connected to a test pad1182through the thin film transistor TS (and/or the thin film transistor TR) in different transistor rows, and therefore the test pad1182may be electrically connected to two other read out lines. In addition, the number of the pads116may be greater than the number of the test pads118.

In some embodiments, the thin film transistors TR and the thin film transistors TS in different transistor rows can be turned on by transmitting switch signals through different signal lines124, and the test signals can be transmitted to the corresponding sensing units SU through the pad1161to the pad1164, thus the test pad1181and the test pad1182can be used to check whether the function of the sensing units SU is normal.

Please refer toFIG.5andFIG.6,FIG.5is a schematic diagram of an electronic device according to a third embodiment of the present disclosure, andFIG.6is a partially enlarged schematic diagram of the electronic device according to the third embodiment of the present disclosure. In some embodiments, the sensing region AR may include a first side1002and a second side1004, and the first side1002may be opposite to the second side1004in the direction Y. As shown inFIG.5, the pad region112, the pads116in the pad region112and the driving unit126electrically connected to the pads116may be disposed on the first side1002of the sensing region AR, and the pad region114, the test pads118in the pad region114and the multiplexer region120(or the multiplexer122inFIG.6) may be disposed on the second side1004of the sensing region AR, but not limited thereto.

In some embodiments, as shown inFIG.5andFIG.6, the multiplexer region120may be disposed between the pad region114and the sensing region AR in the direction Y, and the multiplexers122(or may be referred to as the second multiplexers) may be disposed and connected between the sensing units SU and the test pads118. As shown inFIG.6, the thin film transistors TR of the multiplexers122may be arranged in four transistor rows.

For example, the signal line1101may be electrically connected to the thin film transistor TR in the transistor row TR1. The signal line1102may be electrically connected to the thin film transistor TR in the transistor row TR2. The signal line1103may be electrically connected to the thin film transistor TR in the transistor row TR3. The signal line1104may be electrically connected to the thin film transistor TR in the transistor row TR4. In other words, in some embodiments, the signal lines110may be electrically connected to the thin film transistors TR in the multiplexers122without using the pads116. In addition, the signal line1101to the signal line1104may be electrically connected to a test pad118through the thin film transistors TR in different transistor rows, and therefore one of the test pads118may be electrically connected to four signal lines.

Refer toFIG.7,FIG.7is a partially enlarged schematic diagram of an electronic device according to a fourth embodiment of the present disclosure. Different from the third embodiment, the thin film transistors TR and the thin film transistors TS of the multiplexers122may be arranged in two transistor rows in some embodiments. For example, the signal line1101may be electrically connected to one of the thin film transistors TR in the transistor row TR1. The signal line1102may be electrically connected to one of the thin film transistors TS in the transistor row TR2. The signal line1103may be electrically connected to another one of the thin film transistors TR in the transistor row TR1. The signal line1104may be electrically connected to another one of the thin film transistors TS in the transistor row TR2. In other words, the signal lines110may be electrically connected to the thin film transistors TR and the thin film transistors TS in the multiplexers122without using the pads116in some embodiments.

In addition, the signal line1101and the signal line1102may be electrically connected to the test pad1181through the thin film transistor TR and the thin film transistor TS in different transistor rows, and therefore the test pad1181may be electrically connected to two signal lines. The signal line1103and the signal line1104may be electrically connected to the test pad1182through the thin film transistor TR and the thin film transistor TS in different transistor rows, and therefore the test pad1182may be electrically connected to the other two signal lines.

Please refer toFIG.8andFIG.9,FIG.8is a schematic diagram of an electronic device according to a fifth embodiment of the present disclosure, andFIG.9is a partially enlarged schematic diagram of the electronic device according to the fifth embodiment of the present disclosure. Different from the first embodiment, in some embodiments, a portion of the display units DU (such as the sub-pixels SP3) may not be electrically connected to the signal lines110, but not limited thereto. As shown inFIG.8andFIG.9, the electronic device10may include a plurality of data lines1033(or may be referred to as the first conductive lines) and the plurality of signal lines110(or may be referred to as the second conductive lines) disposed on the substrate100, and the data lines1033and the signal lines110may be extended along the direction Y, but not limited thereto.

As shown inFIG.9, the second ends of the thin film transistors T3 of the sensing units SU may be electrically connected to the signal lines110(such as the signal line1101and the signal line1102), and the first ends of the thin film transistors TD of the display units DU (such as the sub-pixels SP3) may be electrically connected to the data lines1033, but not limited thereto.

The electronic device10may include a plurality of pads128(or may be referred to as the second pads) disposed on the substrate100. The pads128and the pads116may be disposed in the pad region112, and the pads128and the pads116(such as the pad1161and the pad1162) may be arranged in at least one row along the direction X, but not limited thereto.

The data lines1033and the signal lines110may be extended from the sensing region AR to the non-sensing region PR. As shown inFIG.8andFIG.9, one of the data lines1033may be electrically connected to the corresponding one of the pads128, the data lines1033may be connected between the display units DU (such as the sub-pixels SP3) and the pads128, and therefore the pads128may be electrically connected to the display units DU (such as the sub-pixels SP3).

As shown inFIG.8, one of the signal lines110may be electrically connected to the corresponding one of the pads116, the signal lines110may be connected between the sensing units SU and the pads116, and therefore the pads116may be electrically connected to the sensing units SU.

As shown inFIG.9, the signal line1101may be electrically connected to the pad1161, and the pad1161may be electrically connected to the thin film transistor TR in the transistor row TR1. The signal line1102may be electrically connected to the pad1162, and the pad1162may be electrically connected to the thin film transistor TR in the transistor row TR2. The signal line1101, the signal line1102, the pad1161and the pad1162may be electrically connected to one of the test pads118(or the test pad1181) through thin film transistors TR in different transistor rows, and therefore one of the test pads118(or the test pad1181) may be electrically connected to two signal lines. AlthoughFIG.9illustrates a two-to-one multiplexer122as an example, but it is not limited to this. A four-to-one multiplexer122(as shown inFIG.3) may also be used.

In addition, as shown inFIG.8, the driving unit126may be electrically connected to the pads116and the pads128, the driving unit126may be electrically connected to the sensing units SU through the pads116and the signal lines110, and the driving unit126may be electrically connected to a portion of the display units DU (such as the sub-pixels SP3) through the pads128and the data lines1033. For example, the driving unit126may perform fingerprint identification based on the signals from the sensing units SU, and the driving unit126may transmit the grayscale signals to the sub-pixels SP3 through the data lines1033, but not limited thereto.

Please refer toFIG.10,FIG.10is a schematic diagram of an electronic device according to a sixth embodiment of the present disclosure. Different from the fifth embodiment, in some embodiments, the pad region112, the pads116and the pads128in the pad region112, and the driving unit126electrically connected to the pads116and the pads128may be disposed on the first side1002of the sensing region AR, and the pad region114, the test pads118in the pad region114, the multiplexer region120, and the multiplexer122in the multiplexer region120may be disposed on the second side1004of the sensing region AR, but not limited thereto. Similar toFIG.6, the signal lines110may be electrically connected to the thin film transistors TR in the multiplexer122without using the pads116. The connection of the multiplexer122, the test pads118and the signal lines110may be referred toFIG.6,FIG.7and/orFIG.9, and it is not redundantly described herein.

In summary, in the electronic device of the present disclosure, the sensor units and display units can be integrated into the sensing region, the test pads electrically connected to the sensing units can be disposed in the non-sensing region, the test signals can be transmitted to the corresponding sensing units through the first pads, and the function of the sensing units can be checked through the test pads. In addition, the test pads can be electrically connected to the signal lines through the multiplexer, thereby reducing the number of the signal lines or saving the space occupied by the signal lines.