CN116744735A

CN116744735A - Display panel, display device and preparation method

Info

Publication number: CN116744735A
Application number: CN202310551969.7A
Authority: CN
Inventors: 王阳洋; 许晓伟; 钟昆璟; 任庆荣
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd; Hefei Visionox Technology Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd; Hefei Visionox Technology Co Ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-09-12

Abstract

The embodiment of the specification provides a display panel, a display device and a preparation method, wherein the display panel comprises the following components: a functional layer having a plurality of light emitting units; wherein the functional layer is also provided with a light sensing unit; the light sensing unit comprises a first light sensing layer electrode, a second light sensing layer electrode and a light sensing layer; the first light sensing layer electrode and the second light sensing layer electrode are positioned on the same layer. Through the technical method, the first photosensitive layer electrode and the second photosensitive layer electrode of the photosensitive unit are positioned on the same layer, so that the electric field coverage area between the first photosensitive layer electrode and the second photosensitive layer electrode is enlarged to a certain extent, the effect of improving the sensitivity of the photosensitive unit is realized, and the detection precision requirement of the photosensitive unit is met.

Description

Display panel, display device and preparation method

Technical Field

The embodiment of the specification relates to the technical field of display, in particular to a display panel, a display device and a preparation method.

Background

Along with development of technology, various electronic products become an indispensable part of our life, play a vital role in various fields of work, study, information communication, living and the like, and along with continuous iterative development of products, people gradually require effects of the electronic products in display. The ambient light sensor gradually becomes an indispensable component of the electronic product, on one hand, the ambient light sensor can sense ambient light, and the brightness of the display screen is automatically adjusted to adapt to the surrounding illumination environment, so that the display screen is clear and readable, and the requirement of people on the display effect is met. On the other hand, the overall power consumption of the display screen can be reduced.

In the related art, an ambient light sensor in an electronic product is generally placed under a cover glass. However, since the light transmittance of the display screen is limited, there is a certain attenuation of the ambient light after passing through the display screen, which results in a decrease in the intensity of the ambient light detected by the ambient light sensor mounted under the display screen, thereby causing a decrease in the sensitivity of the ambient light sensor and a decrease in the detection accuracy.

Disclosure of Invention

In view of this, various embodiments of the present disclosure are directed to providing a display panel, a display device, and a manufacturing method, which solve the problem of the decrease in the intensity of ambient light detected by an ambient light sensor to some extent, and improve the sensitivity of the ambient light sensor, thereby improving the detection accuracy of the ambient light sensor.

In order to achieve the above object, one embodiment of the present specification provides a display panel including: a functional layer having a plurality of light emitting units; wherein the functional layer is also provided with a light sensing unit; the light sensing unit comprises a first light sensing layer electrode, a second light sensing layer electrode and a light sensing layer; the first light-sensing layer electrode and the second light-sensing layer electrode are formed based on the same electrode layer.

An embodiment of the present specification provides a display device including a driving circuit and the display panel described in any one of the above, the display panel being electrically connected to the driving circuit.

One embodiment of the present specification provides a method for manufacturing a display panel, including: providing a substrate with a driving array structure; forming an electrode layer electrically connected with the driving array structure; the electrode layer is etched to form a first light sensing layer electrode and a second light sensing layer electrode of the light sensing unit, and a first light emitting unit electrode of the light emitting unit.

Compared with the prior art, the display panel provided by the specification has the beneficial effects that: through setting up the light sensing unit in the functional layer that has a plurality of luminescence units, the light sensing unit includes first light sense layer electrode, second light sense layer electrode and light sense layer, and first light sense layer electrode, second light sense layer electrode are located same layer, increase the electric field coverage area between first light sense layer electrode and the second light sense electrode, can make electron and the hole that produces after more light sense layers received light get into the electric field and move, improved the sensitivity of this light sensing unit to improve the detection precision of this light sensing unit.

Drawings

The accompanying drawings are included to provide a further understanding of embodiments of the specification and are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description serve to explain the principles of the specification. In the drawings.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a TFT element according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

Fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.

Fig. 8 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present disclosure.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present specification will be clearly and completely described in the following description with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present application based on the embodiments herein.

It is noted that in this specification relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

Features and embodiments of various aspects of the present description are described in detail below. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Please refer to fig. 1. One embodiment of the present specification provides a display panel 10 including: a functional layer 100 having a plurality of light emitting units 120; wherein the functional layer 100 further has a light sensing unit 110; the light sensing unit 110 includes a first light sensing layer electrode 111, a second light sensing layer electrode 112, and a light sensing layer 113; the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 are formed based on the same electrode layer.

In the present embodiment, the display panel 10 may include a functional layer 100 having a plurality of light emitting units 120 and light sensing units 110. The light emitting unit 120 further includes a first light emitting unit electrode 121, a sub-pixel 123, and a second light emitting unit electrode 122, and several different light emitting units 120 may be combined into one pixel, and a plurality of pixels may be combined into the display panel 100.

In the present embodiment, the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 are located in the photosensitive layer in the photo-sensing unit 110, and the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 are formed by etching the same electrode layer. The cathode and anode are set by controlling the positive and negative of the potential values of the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 by the integrated circuit. Specifically, for example, the integrated circuit controls the potential value of the first photosensitive layer electrode 111 to be positive, and the potential value of the second photosensitive layer electrode 112 to be negative, so that the first photosensitive layer electrode 111 is an anode, and the second photosensitive layer electrode 112 is a cathode. Of course, the integrated circuit may control the potential value of the first photosensitive layer electrode 111 to be negative and the potential value of the second photosensitive layer electrode 112 to be positive, and then the first photosensitive layer electrode 111 is a cathode and the second photosensitive layer electrode 112 is an anode.

In this embodiment, after the integrated circuit energizes the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112, an electric field is formed between the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112. In the case where the first photosensitive electrode 111 is an anode and the second photosensitive electrode 112 is a cathode, the photosensitive layer 113 receives light from the outside to generate excitons, and then separates the generated excitons into holes and electrons. Under the action of the electric field, electrons and holes move in the photosensitive layer 113, and the electrons and holes move to the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 respectively, so that the voltages of the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 become larger, and the integrated circuit can also receive the conversion amount of the voltages. The current of the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 may be increased, and the intensity of light in the surrounding environment may be obtained by the voltage or the amount of change in the current. The display device can automatically adjust the brightness of the display screen according to the intensity of the light in the environment detected by the light sensing unit 110 so as to adapt to the surrounding light environment, and can reduce the overall power consumption of the display screen to a certain extent.

In some embodiments, the photosensitive layer 113 is composed of a photosensitive material, and the photosensitive material may be formed into the photosensitive layer 113 through evaporation, coating, deposition, inkjet printing, or the like. The photosensitive layer 113 may be a photosensitive organic material or an inorganic semiconductor material.

In this embodiment, the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 are formed based on the same electrode layer, and may be formed by etching the same electrode layer. An electric field with a hemispherical coverage area taking the first photosensitive layer electrode and the second photosensitive layer electrode as diameters is formed between the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112, the electric field coverage area between the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 is increased, more electrons and holes can move in the electric field and are directly transmitted to the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 to form photocurrent, so that voltage or current between the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 is increased, the sensitivity of the photo-sensing unit is improved, and the detection precision of the photo-sensing unit 110 is improved.

In some embodiments, the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 are located at a side of the functional layer 100 facing away from the light receiving direction, so that the blocking of the light intensity by the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 is reduced, and the light receiving intensity by the photosensitive layer 113 is increased, thereby improving the sensitivity of the light sensing unit 110.

In some embodiments, the functional layer 100 may further include a plurality of light sensing units 110, where the plurality of light sensing units 110 are distributed among the plurality of light emitting units 120, and the plurality of light sensing units 110 are connected in parallel to monitor the ambient light, and accumulation of light sensing signals output by the plurality of light sensing units 110 is implemented, so as to ensure that the intensity value of the light sensing signal obtained by reading can be sufficiently large, and further ensure the light sensing sensitivity of the display panel 10. The plurality of sensor units 110 increases sensitivity of detecting ambient light, improving detection accuracy.

Please refer to fig. 1. In some embodiments, the display panel 10 may further include a substrate 200 having a driving array, the substrate 200 having the driving array facing the first and second light sensing layer electrodes 111 and 112, the substrate 200 having the driving array including a plurality of light sensing lines and pixel circuits, the light sensing lines being electrically connected with the first and second light sensing layer electrodes 111 and 112 in the light sensing unit 110, thereby operating the light sensing unit 110. The pixel circuit is electrically connected to the light emitting unit 120, thereby causing the light emitting unit 120 to emit light. The substrate 200 with the drive array may also serve as a support for other layers of the display panel 10.

In some embodiments, the substrate 200 having the driving array may include a substrate 210, and the substrate 210 may be a rigid substrate. For example, the rigid substrate may be a glass substrate. The substrate 210 may also be a flexible substrate. For example, the flexible substrate may be a substrate made of a flexible synthetic resin material.

Please refer to fig. 2. In some embodiments, the substrate 200 with the drive array may further include a circuit layer 700. The circuit layer 700 is disposed on the substrate 210 and faces the functional layer 100. The circuit layer 700 may include a plurality of TFT elements 710. Each of the light emitting units 120 is electrically connected to a pixel circuit formed of one TFT element 710, and drives the light emitting unit 120 to operate. Each of the photo-sensing units 110 may be electrically connected to a photo-sensing line formed by one of the TFT elements 710, driving the photo-sensing unit 110. Of course, the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 of each of the photo-sensor cells 110 may be electrically connected to the two TFT elements 710.

Please refer to fig. 2 and 3. In some embodiments, TFT element 710 includes a gate cell 711, a source drain cell 712, and a polysilicon cell 713. The source-drain unit 712 may include a source 712a and a drain 712b, wherein the source 712a and the drain 712b are respectively connected to two ends of the polysilicon unit 713. The gate unit 711 may be a metal material including copper, gold, silver, iron, and the like. The circuit layer 700 may include a gate insulating layer 720 disposed at a side of the substrate base plate facing the functional layer 100 to protect active cells of the insulating protection circuit layer 700. The circuit layer 700 may include an interlayer dielectric layer 730 disposed at a side of the gate insulating layer 720 facing the functional layer 100, and the gate unit 711 is disposed at the interlayer dielectric layer 730. An interlayer dielectric layer 730 is used to protect the gate unit 711. The circuit layer 700 may include an insulating layer 740 disposed on a side of the interlayer dielectric layer 730 facing the functional layer 100. The insulating layer 740 is provided with a metal layer. The planarization layer 750 is disposed on a side of the insulating layer 740 facing the functional layer 100, and the planarization layer 750 can be used to insulate and protect the source/drain unit 712 and planarize the surface of the source/drain unit 712.

In some embodiments, the source and drain units 712 may be electrically connected to the polysilicon units 713 through the insulating layer 740, the interlayer dielectric layer 730, and the gate insulating layer 720 in this order. Please refer to fig. 1. In some embodiments, the functional layer 100 has a first light emitting unit electrode 121 of the light emitting unit 120; the first photosensitive layer electrode 111 and the second photosensitive layer electrode 112 of the photosensitive cell 110 are formed on the basis of the electrode layers in the same manner as the first light emitting cell electrode 121.

In the present embodiment, the first light emitting unit electrode 121 is one of the cathode and the anode of the light emitting unit 120, and the first light emitting unit electrode 121 may be the cathode or the anode. The first light emitting unit electrode 121 and the first and second light sensing layer electrodes 111 and 112 of the light sensing unit 110 are formed by etching the same electrode layer, and the first and second light sensing layer electrodes 111 and 112 and the first light emitting unit electrode 121 may be formed in the same process, thus being beneficial to reducing the process and thus the cost.

In some embodiments, a metal thin film is formed as an electrode layer by deposition or evaporation on one side of the functional layer 100. The first and second light sensing layer electrodes 111 and 112 and the first light emitting unit electrode 121 are etched on the metal thin film according to the shapes of the first and second light sensing layer electrodes 111 and 112 and the first light emitting unit electrode 121, thereby forming the first and second light sensing layer electrodes 111 and 112 and the first light emitting unit electrode 121, reducing the manufacturing process and thus reducing the cost.

Please refer to fig. 4. In some embodiments, a second light emitting unit electrode 121 common to the plurality of light emitting units 120 is formed on one side surface of the functional layer 100, and a first opening 114 is formed in a region of the second light emitting unit electrode 121 corresponding to the light sensing unit 120.

In the present embodiment, a metal thin film is formed on one surface of the functional layer 100 by vapor deposition or deposition, and the metal thin film is processed by etching to form the second light emitting cell electrode 122 common to the plurality of light emitting cells 120. In the thin film etching process, the portion of the second light emitting unit electrode 122 covering the light sensing unit 110 is etched together, so that the region of the second light emitting unit 122 corresponding to the light sensing unit 120 is formed with the first opening 114. The first opening 114 facilitates light penetration into the light sensing layer 113, thereby avoiding shielding of the second light emitting unit electrode 122 from ambient light, and enabling more ambient light to be irradiated onto the light sensing layer 113, thereby improving sensitivity and detection accuracy of the light sensing unit 110.

Please refer to fig. 4. In some embodiments, the first aperture 114 contains a transparent material therein.

In this embodiment, the first opening 114 contains a transparent material, which has a certain transparency, so that the loss of light can be reduced as long as the transmittance of the transparent material is large enough, and the transparent material has a certain supporting function to prevent the display panel from collapsing, thereby avoiding affecting the functional use. The transparent material may be an optical cement or other transparent material as long as the light transmittance is sufficiently high. The process of filling the transparent material into the first opening 114 is not limited, and may be, for example, patterned using a conventional array process.

Please refer to fig. 5 and 6. In some embodiments, the display panel 10 further includes a black matrix layer 300; wherein the black matrix layer 300 is disposed at a side of the second light emitting unit electrode layer 122 remote from the functional layer 100; the black matrix layer 300 is provided with a second opening 310 corresponding to the first opening 114, and the second opening 310 accommodates a microlens 311 therein. The black matrix layer 300 may serve to block gaps of colors, preventing light leakage or color mixing.

In the present embodiment, in order to reduce light reflection and light leakage of the display panel 10 and thereby improve the display effect of the display panel 10, the black matrix layer 300 is disposed on a side of the second light emitting unit electrode layer 122 remote from the functional layer 100, and the second hole 310 is formed at a position of the black matrix layer 300 corresponding to the first opening 114 by etching. The second opening 310 accommodates a micro lens 311, and the micro lens 311 can focus light on the light sensing layer 113, thereby increasing the amount of light received by the light sensing layer 113, and improving the sensitivity and detection accuracy of the light sensing unit 110.

In some embodiments, the micro lens 311 may be further formed of a plurality of micro lenses smaller than the micro lens 311, and the performance of the micro lens 311 for condensing light may be improved, thereby improving the sensitivity and detection accuracy of the light sensing unit 110.

Please refer to fig. 7. In some embodiments, the display panel 10 may further include an encapsulation layer 400, the encapsulation layer 400 being formed between the black matrix layer 300 and the functional layer 100, the encapsulation layer 400 may block water and oxygen from entering the display panel 10 to some extent, and reduce the influence of water and oxygen in the environment on the display panel 10, thereby improving the performance of the display panel 10.

In some embodiments, the display panel 10 may further include an infrared cut filter 500 and a color filter 600, wherein the infrared cut filter 500 is disposed on a side of the black matrix layer 300 away from the functional layer 100, and the infrared cut filter 500 is used to filter infrared light and ultraviolet light, which cannot be recognized by human eyes in ambient light, so as to increase the intensity of light entering the light sensing unit 110 and improve the sensitivity of the light sensing unit 110. The color filter film 600 is disposed on one side of the infrared cut filter film 500 away from the functional layer 100, where the color filter film 600 can improve the light emitting purity of the display pixels, filter parasitic light, and improve the use experience.

An embodiment of the present specification provides a display device including a driving circuit and the display panel 10 described in any one of the above, the display panel 10 being electrically connected to the driving circuit.

In this embodiment, the display device includes the display panel 10 and the driving circuit connected by electric wires so that current can flow. The driving circuit is an external driving IC, and is different from a driving array in the display panel. The display device can be any product or component with a display function, such as a mobile phone, a tablet personal computer, a digital photo frame, electronic paper and the like. The display device has all the advantages of the display panel 10 provided in the present specification, and the specific description of the display panel 10 with reference to the above embodiments is omitted herein.

Please refer to fig. 8. An embodiment of the present specification provides a method of manufacturing a display panel, which may include the following steps.

And S110, providing a substrate with a driving array structure.

In this embodiment, a substrate having a driving array structure is provided to provide support for other layers of the display panel, and the driving array structure in the substrate can be electrically connected to a plurality of light emitting units and light sensors, so that the light emitting units and the light sensors can work normally.

And S120, forming an electrode layer electrically connected with the driving array structure.

In this embodiment, an electrode layer is deposited on a substrate having a driving array structure, and the driving array structure is electrically connected to the electrode layer so that current can flow, and preparation is made for forming a first light-sensing layer electrode, a second light-sensing layer electrode, and a light-emitting unit electrode.

And S130, etching the electrode layers to form a first light sensing layer electrode and a second light sensing layer electrode of the light sensing unit and a first light emitting unit electrode of the light emitting unit.

In this embodiment, unnecessary portions of the electrode layer are etched away by chemical reaction or physical means, and the remaining portions of the electrode layer form first and second photosensitive layer electrodes of the photosensitive unit, and first light emitting unit electrodes of the light emitting unit.

In some embodiments, the method for manufacturing a display panel further includes: forming a functional layer based on the first light-sensing layer electrode, the second light-sensing layer electrode, and the first light-emitting unit electrode; wherein the pixel definition layer comprises: a light sensing unit formed of a light sensing layer, the first light sensing layer electrode, and the second light sensing layer electrode, and a light emitting unit formed based on the first light emitting unit electrode; a second light-emitting unit electrode shared by a plurality of light-emitting units is formed on one side of the pixel definition layer, which is opposite to the substrate. And etching a first opening at a position of the second light-emitting unit electrode corresponding to the light sensing unit.

In this embodiment mode, an electrode layer formed over a substrate of an array structure is driven, a first light-sensitive layer electrode, a second light-sensitive layer electrode, and a first light-emitting unit electrode are formed by etching, and the formed electrode is used as a base of a functional layer, thereby forming the functional layer. The functional layer comprises a light sensing unit and a light emitting unit, the light sensing unit is formed by a first light sensing layer electrode and a second light sensing layer electrode, and a second light emitting unit electrode shared by a plurality of light emitting units is formed on one side of the first light emitting unit electrode and the functional layer, which is opposite to the substrate.

In some embodiments, the method for manufacturing a display panel further includes: sequentially stacking an encapsulation layer and a black matrix layer on the second light emitting cell electrode; wherein, the black matrix layer is provided with a second opening corresponding to the first opening; the second aperture accommodates a microlens therein.

In this embodiment, the packaging layer and the black matrix layer are sequentially stacked on the second light-emitting unit electrode in the display panel, the packaging layer is disposed on a side, far away from the first light-emitting unit electrode, of the second light-emitting unit electrode, and the packaging layer can prevent water, oxygen and other substances from entering the display panel, so that the performance of the display panel is improved. The black matrix layer is arranged on one side of the black matrix layer far away from the second light-emitting unit electrode, so that the effect of the color filter film is ensured, and the black matrix layer can be used for shielding gaps of colors and preventing light leakage or color mixing. And simultaneously, the intensity of light entering the light sensing unit is increased, so that the sensitivity of the sensor is improved.

In some embodiments, the method for manufacturing a display panel further includes: an infrared cut filter film and a filter color film are sequentially laminated on the black matrix layer.

In this embodiment, the infrared cut-off green film and the filter film are laminated on the black matrix layer in the order of the infrared cut-off green film and the filter film, so that the sensitivity and the detection precision of the light sensing unit of the display panel are improved, and the use experience of the display panel is improved.

The various embodiments in this specification are themselves focused on differing portions from other embodiments, and the various embodiments may be explained in cross-reference to one another. Any combination of the various embodiments in the present specification is encompassed by the disclosure of the present specification by a person of ordinary skill in the art based on general technical knowledge.

The technical features of the above embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above description is only of some embodiments of the present disclosure, and is not intended to limit the present disclosure, but any modifications, equivalents, etc. within the spirit and principles of the present disclosure are intended to be included in the scope of the disclosure.

Claims

1. A display panel, comprising:

a functional layer having a plurality of light emitting units; wherein the functional layer is also provided with a light sensing unit; the light sensing unit comprises a first light sensing layer electrode, a second light sensing layer electrode and a light sensing layer; the first light-sensing layer electrode and the second light-sensing layer electrode are formed based on the same electrode layer.

2. The display panel according to claim 1, wherein the functional layer has a first light-emitting unit electrode of the light-emitting unit; the first light sensing layer electrode and the second light sensing layer electrode of the light sensing unit are formed on the basis of the electrode layers and the first light emitting unit electrode.

3. The display panel according to claim 1, wherein a second light emitting unit electrode common to the plurality of light emitting units is formed on one side surface of the functional layer, and a first opening is formed in a region of the second light emitting unit electrode corresponding to the light sensing unit.

4. A display panel according to claim 3, wherein the first aperture contains a transparent material.

5. The display panel of claim 3, further comprising a black matrix layer; wherein the black matrix layer is disposed on a side of the second light emitting unit electrode away from the functional layer; and the black matrix layer is provided with a second opening corresponding to the first opening, and the second opening is internally provided with a micro lens.

6. A display device comprising a drive circuit and a display panel according to any one of claims 1-5, the display panel being electrically connected to the drive circuit.

7. A method for manufacturing a display panel, comprising:

providing a substrate with a driving array structure;

forming an electrode layer electrically connected with the driving array structure;

the electrode layer is etched to form a first light sensing layer electrode and a second light sensing layer electrode of the light sensing unit, and a first light emitting unit electrode of the light emitting unit.

8. The method of claim 7, wherein the method further comprises:

forming a functional layer based on the first light-sensing layer electrode, the second light-sensing layer electrode, and the first light-emitting unit electrode; wherein, the functional layer includes: a light sensing unit formed of a light sensing layer, the first light sensing layer electrode, and the second light sensing layer electrode, and a light emitting unit formed based on the first light emitting unit electrode layer; a second light-emitting unit electrode shared by a plurality of light-emitting units is formed on one side of the functional layer, which is opposite to the substrate;

and etching a first opening at a position of the second light-emitting unit electrode corresponding to the light sensing unit.

9. The method of claim 8, wherein the method further comprises:

sequentially stacking an encapsulation layer and a black matrix layer on the second light emitting cell electrode; wherein, the black matrix layer is provided with a second opening corresponding to the first opening; the second aperture accommodates a microlens therein.

10. The method according to claim 9, wherein the method further comprises: an infrared cut filter film and a filter color film are sequentially laminated on the black matrix layer.