# US 10,872,922 B2 · Display substrate and method for manufacturing the same, fingerprint recognition device and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,872,922 B2 - Document ID: US10872922B2 - Status: Granted - Kind: B2 - Application number: 15/776,984 - Filed: 2017-09-28 - Published: 2019-09-12 - Granted: 2020-12-22 - Earliest claimed: 2016-12-01 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Yanan Jia; Xue Dong; Jing Lv; Haisheng Wang; Yingming Liu; Xiaoliang Ding; Yuzhen Guo; Wei Liu; Yanling Han; Changfeng Li; Pengpeng Wang; Chun Wei Wu; Rui Xu; Lijun Zhao - Web page: https://patentgrep.com/patent/US10872922B2 ## CPC - G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing} - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G02F 1/1336: {Illuminating devices} - G06V 10/17: {using hand-held instruments} - H10F 39/016: {of thin-film-based image sensors} - H10F 39/198: {Contact-type image sensors [CIS]} - H10F 39/8057: {Optical shielding} - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10K 39/32: Organic image sensors - G02F 1/13312: {Circuits comprising photodetectors for purposes other than feedback} - G02F 1/13318: {Circuits comprising a photodetector} - G02F 1/13324: {Circuits comprising solar cells} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G02F 2201/44: Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers - H10F 39/8037: {the integrated elements comprising a transistor} - H10K 59/65: OLEDs integrated with inorganic image sensors - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display substrate, a method for manufacturing the display substrate, a fingerprint recognition device and a display device are provided. The display substrate includes a base substrate, a black matrix sensor provided on the base substrate and a plurality of functional sensors which are spaced apart from each other, the black matrix sensor blocks at least visible light and includes a plurality of first extension portions and a plurality of second extension portions, and the first extension portions intersect the second extension portions to form a plurality of hollow regions. Orthographic projections of the functional sensors on the black matrix sensor are within the region where the black matrix sensor is located. ## Claims ### Claim 1 A display device, comprising: a plurality of functional sensors which are spaced apart from each other; and a black matrix sensor which blocks at least visible light, wherein the black matrix sensor comprises a plurality of first extension portions and a plurality of second extension portions, and the first extension portions intersect the second extension portions to form a plurality of hollow regions, wherein orthographic projections of the functional sensors on the black matrix sensor are within a region where the black matrix sensor is located; and wherein the black matrix sensor comprises an optical sensor; and wherein the black matrix sensor comprises a first electrode, a second electrode opposite to the first electrode and a semiconductor layer between the first electrode and the second electrode, the first electrode and the second electrode are successively arranged along a propagation direction of ambient light irradiating the display device, the first electrode is transparent, and the second electrode blocks at least the visible light. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the semiconductor layer comprises a P-type semiconductor layer, an intrinsic semiconductor layer and an N-type semiconductor, a material of the intrinsic semiconductor layer comprises an amorphous silicon semiconductor, and a thickness of the intrinsic semiconductor layer is larger than 1 micron. ### Claim 3 (depends on 1) The display device according to claim 1, further comprising: an insulation layer which insulates the functional sensors from the black matrix sensor. ### Claim 4 (depends on 1) The display device according to claim 1, wherein each of the functional sensors comprises an optical sensor. ### Claim 5 (depends on 4) The display device according to claim 4, wherein the display device comprises an array substrate and an opposite substrate opposite to the array substrate; and the array substrate or the opposite substrate comprises the functional sensors and the black matrix sensor, and each of the functional sensors and the black matrix sensor are successively arranged along a propagation direction of ambient light irradiating the display device. ### Claim 6 (depends on 5) The display device according to claim 5, wherein each of the functional sensors comprises a third electrode, a fourth electrode opposite to the third electrode and a semiconductor layer between the third electrode and the fourth electrode, and both the third electrode and the fourth electrode are transparent. ### Claim 7 (depends on 4) The display device according to claim 4, wherein the display device comprises an array substrate and an opposite substrate opposite to the array substrate; and the array substrate comprises the functional sensors and the opposite substrate comprises the black matrix sensor. ### Claim 8 (depends on 7) The display device according to claim 7, wherein each of the functional sensors comprises a light-blocking electrode, a transparent electrode opposite to the light-blocking electrode and a semiconductor layer between the light-blocking electrode and the transparent electrode, and the transparent electrode is between the light-blocking electrode and the black matrix sensor. ### Claim 9 (depends on 4) The display device according to claim 4, further comprising a light source, wherein the functional sensors are configured to sense light emitted by the light source. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the light source is at a periphery of the display device, or an orthographic projection of the light source on the black matrix sensor is within the region where the black matrix sensor is located. ### Claim 11 (depends on 9) The display device according to claim 9, wherein the black matrix sensor comprises an optical sensor, and the black matrix sensor is electrically connected with the light source and is configured to power the light source. ### Claim 12 (depends on 1) The display device according to claim 1, further comprising a back light source, wherein the black matrix sensor is electrically connected with the back light source. ### Claim 13 (depends on 1) The display device according to claim 1, wherein the display device comprises an array substrate and an opposite substrate opposite to the array substrate; and the array substrate or the opposite substrate comprises the functional sensors and the black matrix sensor, and each of the functional sensors and the black matrix sensor are successively arranged along a propagation direction of ambient light irradiating the display device. ### Claim 14 (depends on 13) The display device according to claim 13, wherein each of the functional sensors comprises a third electrode, a fourth electrode opposite to the third electrode and a semiconductor layer between the third electrode and the fourth electrode, and both the third electrode and the fourth electrode are transparent. ### Claim 15 A fingerprint recognition device, comprising: a plurality of fingerprint recognition sensors which are spaced apart from each other; and a black matrix sensor which blocks at least visible light, wherein the black matrix sensor comprises a plurality of first extension portions and a plurality of second extension portions, and the first extension portions intersect the second extension portions to form a plurality of hollow regions, wherein orthographic projections of the fingerprint recognition sensors on the black matrix sensor are within a region where the black matrix sensor is located; and wherein the black matrix sensor comprises an optical sensor; and wherein the black matrix sensor comprises a first electrode, a second electrode opposite to the first electrode and a semiconductor layer between the first electrode and the second electrode, the first electrode and the second electrode are successively arranged along a propagation direction of ambient light irradiating the display device, the first electrode is transparent, and the second electrode blocks at least the visible light. ### Claim 16 A display substrate, comprising: a plurality of functional sensors which are spaced apart from each other; and a black matrix sensor which blocks at least visible light, wherein the black matrix sensor comprises a plurality of first extension portions and a plurality of second extension portions, and the first extension portions intersect the second extension portions to form a plurality of hollow regions, wherein orthographic projections of the functional sensors on the black matrix sensor are within a region where the black matrix sensor is located; and wherein the black matrix sensor comprises an optical sensor; and wherein the black matrix sensor comprises a first electrode, a second electrode opposite to the first electrode and a semiconductor layer between the first electrode and the second electrode, the first electrode and the second electrode are successively arranged along a propagation direction of ambient light irradiating the display device, the first electrode is transparent, and the second electrode blocks at least the visible light. ### Claim 17 (depends on 16) A method for manufacturing the display substrate according to claim 16, comprising: forming the plurality of functional sensors and the black matrix sensor which comprises a first electrode, a semiconductor layer and a second electrode, wherein forming the black matrix sensor comprises: forming a first electrode film and patterning the first electrode film to form the first electrode which is in a mesh shape, forming a semiconductor film and patterning the semiconductor film to form the semiconductor layer which is in a mesh shape, and forming a second electrode film and patterning the second electrode film to form the second electrode which is in a mesh shape; or forming a first electrode film, a semiconductor film and a second electrode film which are stacked, and patterning the first electrode film, the semiconductor film and the second electrode film to form the first electrode which is in a mesh shape, the semiconductor layer which is in a mesh shape and the second electrode which is in a mesh shape.