US-12628538-B2 - Pixel structure including anode overlapping with recognition hole and display panel including the same

US12628538B2US 12628538 B2US12628538 B2US 12628538B2US-12628538-B2

Abstract

A pixel structure and a display panel are provided. The pixel structure includes multiple pixel units arranged in an array. Each pixel unit includes a blocking layer, an anode layer, and a photosensor. The blocking layer is provided with a recognition hole penetrating through the blocking layer in a thickness direction of the pixel unit. Part of the anode layer and part of the blocking layer are disposed opposite to each other in the thickness direction. The anode layer includes an anode and a reflective layer. The anode includes a reflective region and a non-reflective region. The reflective region is disposed around the non-reflective region, and the reflective layer covers a surface of the reflective region of the anode. The photosensor is disposed at a side of the anode layer away from the blocking layer. The recognition hole is opposite to the photosensor in the thickness direction.

Inventors

Jing Li
Ting Zhou
Qi MU
Hailiang Wang
Laidi WU
Tianjun HUANG
Baohong KANG

Assignees

HKC Corporation Limited

Dates

Publication Date: 20260512
Application Date: 20230811
Priority Date: 20230228

Claims (20)

1 . A pixel structure, comprising a plurality of pixel units, the plurality of pixel units being arranged in an array, and each of the plurality of pixel units comprising: a blocking layer provided with a recognition hole, wherein the recognition hole penetrates through the blocking layer in a thickness direction of the pixel unit; an anode layer, wherein part of the anode layer and part of the blocking layer are disposed opposite to each other in the thickness direction, the anode layer comprises an anode and a reflective layer, the anode comprises a reflective region and a non-reflective region, an orthographic projection of the non-reflective region in the thickness direction covers the recognition hole, the reflective region is disposed around the non-reflective region, and the reflective layer covers a surface of the reflective region of the anode; and a photosensor disposed at a side of the anode layer away from the blocking layer, wherein the recognition hole is opposite to the photosensor in the thickness direction.
2 . The pixel structure of claim 1 , wherein the photosensor is implemented as a plurality of photosensors, and the recognition hole of the blocking layer is implemented as a plurality of recognition holes, the plurality of recognition holes are arranged at intervals, the non-reflective region of the anode is implemented as a plurality of non-reflective regions, and a number of the non-reflective regions is the same as a number of the recognition holes, each of the plurality of non-reflective regions and each of the plurality of photosensors are opposite to one of the plurality of recognition holes in the thickness direction, and each of the plurality of photosensors is opposite to one of the plurality of non-reflective regions in the thickness direction.
3 . The pixel structure of claim 2 , wherein each of the plurality of pixel units comprises a light-emitting layer and a sub-pixel corresponding to the light-emitting layer, the blocking layer further comprises a matrix hole, the sub-pixel is connected to the matrix hole, the sub-pixel is opposite to the light-emitting layer in the thickness direction, and the light-emitting layer is located between the light-blocking layer and the anode layer.
4 . The pixel structure of claim 3 , wherein each of the plurality of pixel units further comprises a Thin Film Transistor (TFT), wherein the TFT is disposed at a side of the anode layer away from the blocking layer.
5 . The pixel structure of claim 3 , wherein each of the plurality of pixel units further comprises a cathode, wherein the blocking layer, the cathode, the light-emitting layer, and the anode layer are arranged sequentially, and the light-emitting layer is made of an organic material.
6 . The pixel structure of claim 5 , wherein the light-emitting layer is configured to emit blue light, green light, or red light.
7 . The pixel structure of claim 6 , further comprising a spacer disposed between light-emitting layers of two adjacent pixel units.
8 . The pixel structure of claim 7 , wherein each of the plurality of pixel units further comprises an encapsulation layer disposed between the blocking layer and the cathode.
9 . The pixel structure of claim 8 , wherein the encapsulation layer comprises a first sub-layer, a second sub-layer, and a third sub-layer sequentially arranged in the thickness direction, each of the first sub-layer and the third sub-layer is made of an inorganic material, and the second sub-layer is made of an organic material.
10 . The pixel structure of claim 3 , wherein each of the plurality of pixel units further comprises a TFT disposed at a side of the anode layer away from the blocking layer, wherein the photosensor is located on a surface of the TFT facing the anode layer, located on a surface of the TFT away from the anode layer, or embedded in the TFT.
11 . The pixel structure of claim 3 , wherein each of the plurality of pixel units further comprises a protection layer disposed on a surface of the sub-pixel and a surface of the blocking layer.
12 . A display panel, comprising: a first substrate; and a pixel structure connected to the first substrate, wherein the pixel structure comprises a plurality of pixel units, the plurality of pixel units are arranged in an array, and each of the plurality of pixel units comprises: a blocking layer provided with a recognition hole, wherein the recognition hole penetrates through the blocking layer in a thickness direction of the pixel unit; an anode layer, wherein part of the anode layer and part of the blocking layer are disposed opposite to each other in the thickness direction, the anode layer comprises an anode and a reflective layer, the anode comprises a reflective region and a non-reflective region, an orthographic projection of the non-reflective region in the thickness direction covers the recognition hole, the reflective region is disposed around the non-reflective region, and the reflective layer covers a surface of the reflective region of the anode; and a photosensor disposed at a side of the anode layer away from the blocking layer, wherein the recognition hole is opposite to the photosensor in the thickness direction.
13 . The display panel of claim 12 , wherein the photosensor is implemented as a plurality of photosensors, and the recognition hole of the blocking layer is implemented as a plurality of recognition holes, the plurality of recognition holes are arranged at intervals, the non-reflective region of the anode is implemented as a plurality of non-reflective regions, and a number of the non-reflective regions is the same as a number of the recognition holes, each of the plurality of non-reflective regions and each of the plurality of photosensors are opposite to one of the plurality of recognition holes in the thickness direction, and each of the plurality of photosensors is opposite to one of the plurality of non-reflective regions in the thickness direction.
14 . The display panel of claim 13 , wherein each of the plurality of pixel units comprises a light-emitting layer and a sub-pixel corresponding to the light-emitting layer, the blocking layer further comprises a matrix hole, the sub-pixel is connected to the matrix hole, the sub-pixel is opposite to the light-emitting layer in the thickness direction, and the light-emitting layer is located between the light-blocking layer and the anode layer.
15 . The display panel of claim 14 , wherein each of the plurality of pixel units further comprises a Thin Film Transistor (TFT), wherein the TFT is disposed at a side of the anode layer away from the blocking layer.
16 . The display panel of claim 14 , wherein each of the plurality of pixel units further comprises a cathode, wherein the blocking layer, the cathode, the light-emitting layer, and the anode layer are arranged sequentially, and the light-emitting layer is made of an organic material.
17 . The display panel of claim 16 , wherein the light-emitting layer is configured to emit blue light, green light, or red light.
18 . The display panel of claim 17 , wherein the pixel structure further comprises a spacer disposed between light-emitting layers of two adjacent pixel units.
19 . The display panel of claim 18 , wherein each of the plurality of pixel units further comprises an encapsulation layer disposed between the blocking layer and the cathode.
20 . The display panel of claim 19 , wherein the encapsulation layer comprises a first sub-layer, a second sub-layer, and a third sub-layer sequentially arranged in the thickness direction, each of the first sub-layer and the third sub-layer is made of an inorganic material, and the second sub-layer is made of an organic material.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority under 35 U.S.C. § 119(a) to Chinese Patent Application No. 202310174006.X, filed Feb. 28, 2023, the entire disclosure of which is incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the field of display technology, and in particular to a pixel structure and a display panel. BACKGROUND At present, electronic devices such as mobile phones or tablet computers are configured with a fingerprint recognition function, and fingerprint recognition can be used for operations such as unlocking or payment. Fingerprint recognition can simplify operations such as password input, and improve the feeling of use. However, existing fingerprint recognition can only be performed on a small region of a screen, and a user needs to perform alignment in use, resulting in an insufficiently simplified usage process. SUMMARY Embodiments of the present disclosure provide a pixel structure and a display panel. According to a first aspect, the present disclosure provides a pixel structure. The pixel structure includes multiple pixel units. The multiple pixel units are arranged in an array. Each pixel unit includes a blocking layer, an anode layer, and a photosensor. The blocking layer is provided with a recognition hole penetrating through the blocking layer in a thickness direction of the pixel unit. Part of the anode layer and part of the blocking layer are disposed opposite to each other in the thickness direction. The anode layer includes an anode and a reflective layer. The anode includes a reflective region and a non-reflective region. An orthographic projection of the non-reflective region in the thickness direction covers the recognition hole. The reflective region is disposed around the non-reflective region. The reflective layer covers a surface of the reflective region of the anode. The photosensor is disposed at a side of the anode layer away from the blocking layer, and the recognition hole is opposite to the photosensor in the thickness direction. In a second aspect, the present disclosure provides a display panel. The display panel includes a first substrate and the pixel structure mentioned above, where the pixel structure is connected to the first substrate. BRIEF DESCRIPTION OF THE DRAWINGS To describe the technical solutions of the present disclosure more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description merely illustrate some embodiments of the present disclosure, and a person of ordinary skill in the art can further derive other accompanying drawings based on these accompanying drawings without creative efforts. FIG. 1 is a schematic cross-sectional view of a display panel provided by the present disclosure. FIG. 2 is a schematic cross-sectional view of the display panel illustrated in FIG. 1. FIG. 3 is another schematic cross-sectional view of the display panel illustrated in FIG. 1. FIG. 4 is yet another schematic cross-sectional view of the display panel illustrated in FIG. 1. FIG. 5 is a schematic view illustrating distribution of matrix holes and recognition holes in a blocking layer illustrated in FIG. 2. FIG. 6 is a schematic structural view of part of a pixel structure illustrated in FIG. 1 in a display state. FIG. 7 is a schematic structural view of part of the pixel structure illustrated in FIG. 1 in a fingerprint recognition state. Reference numerals: display panel 1000, pixel structure 200, first substrate 100, second substrate 300, pixel unit 210, thin film transistor 211, anode layer 212, light-emitting layer 213, cathode 214, encapsulation layer 215, blocking layer 216, sub-pixel 217, protection layer 218, photosensor 219, spacer 240, anode 2121, reflective layer 2122, reflective region 2123, non-reflective region 2124, matrix hole 2161, recognition hole 2162, first sub-layer 2151, second sub-layer 2152, and third sub-layer 2153. DETAILED DESCRIPTION For ease of understanding, the terms involved in the embodiments of the present disclosure are first explained. “And/or” may merely illustrate an association relationship of associated objects, and represents that three relationships may exist, for example, A and/or B may represent three cases: A exists alone, both A and B exist, and B exists alone. “A plurality of” and “multiple” may mean two or more than two. “Connection” and “coupling” can be understood broadly, for example, connection (coupling) between A and B may be direct connection (coupling) between A and B, or indirect connection (coupling) between A and B through an intermediate medium. Embodiments of the present disclosure will be clearly described hereinafter in conjunction with the accompanying drawings. At present, electronic devices such as mobile phones or tablet computers are configured with a fingerprint recognition function, and fingerprint recognition can be