# US 11,908,226 B2 · Texture recognition device and manufacturing method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,226 B2 - Document ID: US11908226B2 - Status: Granted - Kind: B2 - Application number: 16/970,091 - Filed: 2019-11-28 - Published: 2023-01-26 - Granted: 2024-02-20 - Earliest claimed: 2019-11-28 - Assignees: Beijing BOE Sensor Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Beijing Boe Sensor Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Yajie Feng; Cheng Li; Yanna Xue; Xiaozhou Zhan; Yue Geng; Kuiyuan Wang; Haibo Huang; Jingfu Tao - Web page: https://patentgrep.com/patent/US11908226B2 ## CPC - G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing} - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/0073: {Light emitting diode [LED]} - G02F 1/1335: Structural association of cells with optical devices, e.g. polarisers or reflectors - G06F 3/042: by opto-electronic means - G06V 10/147: Details of sensors, e.g. sensor lenses (fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19) - G06V 10/54: relating to texture - G06V 40/1324: {by using geometrical optics, e.g. using prisms (G06V40/1312 takes precedence)} - G06V 40/1359: {Extracting features related to ridge properties; Determining the fingerprint type, e.g. whorl or loop} - G06V 40/1376: {Matching features related to ridge properties or fingerprint texture} - H05K 9/0067: {Devices for protecting against damage from electrostatic discharge} - H10W 42/60: protecting against electrostatic charges or discharges, e.g. Faraday shields (integrated devices comprising arrangements for electrical protection H10D89/60) - G02B 5/04: Prisms - G02B 5/281: {designed for the infrared light} - G02B 5/285: {comprising deposited thin solid films (G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361)} - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A texture recognition device and a manufacturing method thereof are provided. The texture recognition device includes a backlight component and a photosensitive component. The photosensitive component is on a light-outputting side of the backlight component and configured to detect light emitted by the backlight component and reflected by a texture of a detection object to recognize an image of the texture of the detection object. The photosensitive component includes a plurality of photosensitive sensors and an antistatic layer on a side, away from the backlight component, of the plurality of photosensitive sensors, and orthographic projections of the plurality of photosensitive sensors on a plane where the antistatic layer is located are within the antistatic layer. ## Claims ### Claim 1 A texture recognition device, comprising: a backlight component; and a photosensitive component, which is on a light-outputting side of the backlight component and configured to detect light emitted by the backlight component and reflected by a texture of a detection object to recognize an image of the texture of the detection object, wherein the photosensitive component comprises a plurality of photosensitive sensors and an antistatic layer on a side, away from the backlight component, of the plurality of photosensitive sensors, and orthographic projections of the plurality of photosensitive sensors on a plane where the antistatic layer is located are within the antistatic layer, wherein the backlight component comprises a surface light source and a light restriction layer, the light restriction layer is on a side, close to the photosensitive component, of the surface light source, and is configured to restrain light emitted from the surface light source to a direction perpendicular to a surface of the texture recognition device. ### Claim 2 (depends on 1) The texture recognition device according to claim 1, wherein a thickness of the antistatic layer is in a range of 8 microns to 30 microns. ### Claim 3 (depends on 1) The texture recognition device according to claim 1, wherein a relative dielectric constant of the antistatic layer is in a range of 3 to 10; and a material of the antistatic layer comprises a resin material. ### Claim 4 (depends on 1) The texture recognition device according to claim 1, wherein the photosensitive component further comprises a light filter layer on a side of the antistatic layer, the side where the light filter layer is located is away from the plurality of photosensitive sensors, and the light filter layer is configured to filter light with a wavelength of 580 nm to 1100 nm. ### Claim 5 (depends on 4) The texture recognition device according to claim 4, wherein a material of the light filter layer comprises a stack of at least one SiO2 layer and at least one Ti3O5 layer or a stack of at least one SiO2 layer and at least one Ta2O5 layer. ### Claim 6 (depends on 4) The texture recognition device according to claim 4, wherein a surface of the light filter layer is configured as a texture touch surface, and the surface configured as the texture touch surface is away from the antistatic layer. ### Claim 7 (depends on 1) The texture recognition device according to claim 1, wherein the light restriction layer comprises a first prism structure, and the first prism structure is configured to collimate the light emitted from the surface light source to the direction perpendicular to the surface of the texture recognition device by refraction. ### Claim 8 (depends on 7) The texture recognition device according to claim 7, wherein one surface of the first prism structure comprises a plurality of prism-shaped protrusions that are in parallel, a main cross section of each of the prism-shaped protrusions is in a triangle shape, and an apex angle of the triangle shape is in a range of 40 degrees to 75 degrees. ### Claim 9 (depends on 7) The texture recognition device according to claim 7, wherein the light restriction layer further comprises a second prism structure on a side, away from the surface light source, of the first prism structure, and the second prism structure is configured to only transmit light with an included angle within 30 degrees from a normal direction of the second prism structure. ### Claim 10 (depends on 9) The texture recognition device according to claim 9, wherein one surface of the second prism structure comprises a plurality of prism-shaped protrusions that are in parallel, a main cross section of each of the prism-shaped protrusions of the second prism structure is in a trapezium shape, and a bottom angle of the trapezium shape is in a range of 60 degrees to 90 degrees. ### Claim 11 (depends on 1) The texture recognition device according to claim 1, wherein the surface light source comprises a light guide plate and at least one light emitting component on at least one side surface of the light guide plate, and light emitted by the at least one light emitting component enters the light guide plate from the at least one side surface and exits from a plate surface, facing the light restriction layer, of the light guide plate; or, the surface light source comprises a light emitting component array, and light emitting component array comprises a plurality of light emitting components that are in a plurality of rows and a plurality of columns. ### Claim 12 (depends on 11) The texture recognition device according to claim 11, wherein each of the light emitting components comprises a cathode, an anode, a light emitting layer between the cathode and the anode, and a grounded pin connected to the cathode. ### Claim 13 (depends on 1) The texture recognition device according to claim 1, further comprising: a drive circuit on a side, away from the photosensitive component, of the backlight component, wherein the drive circuit is configured to drive the photosensitive component. ### Claim 14 (depends on 13) The texture recognition device according to claim 13, wherein the photosensitive component comprises a sense region and a peripheral region surrounding the sense region, and the plurality of photosensitive sensors are in an array in the sense region, the texture recognition device further comprises a plurality of readout integrated circuits, the plurality of readout integrated circuits are in the peripheral region and alternately distributed respectively on a first side of the sense region and a second side of the sense region, and the first side is opposite to the second side; the array of the plurality of photosensitive sensors comprises a plurality of sub-arrays, first ends of the plurality of readout integrated circuits are respectively electrically connected with the plurality of sub-arrays, and second ends of the plurality of readout integrated circuits are electrically connected with the drive circuit. ### Claim 15 (depends on 14) The texture recognition device according to claim 14, further comprising: at least one gate driver which is in the peripheral region and on a third side of the sense region, wherein a first end of the at least one gate driver is electrically connected with the plurality of photosensitive sensors, and a second end of the at least one gate driver is electrically connected with the drive circuit. ### Claim 16 (depends on 15) The texture recognition device according to claim 15, further comprising a circuit board, wherein the at least one gate driver comprises two gate drivers, the circuit board is between the two gate drivers and in parallel with the two gate drivers on the third side, and the two gate drivers are electrically connected with the drive circuit through the circuit board. ### Claim 17 (depends on 14) The texture recognition device according to claim 14, further comprising: an opaque glue frame surrounding the sense region. ### Claim 18 A manufacturing method of a texture recognition device, comprising: providing a backlight component; providing a photosensitive component which is configured to detect light emitted by the backlight component and reflected by a texture of a detection object to recognize an image of the texture of the detection object, wherein the photosensitive component comprises a plurality of photosensitive sensors and an antistatic layer on a side, away from the backlight component, of the plurality of photosensitive sensors, and orthographic projections of the plurality of photosensitive sensors on a plane where the antistatic layer is located are within the antistatic layer; and stacking the backlight component and the photosensitive component, wherein the backlight component comprises a surface light source and a light restriction layer, the light restriction layer is on a side, close to the photosensitive component, of the surface light source, and is configured to restrain light emitted from the surface light source to a direction perpendicular to a surface of the texture recognition device. ### Claim 19 (depends on 18) The manufacturing method of the texture recognition device according to claim 18, wherein providing the photosensitive component comprises: forming the plurality of photosensitive sensors on a substrate, and forming the antistatic layer on the plurality of photosensitive sensors by a coating method; and forming a light filter layer on a side of the antistatic layer by an evaporation method, and the side where the light filter layer is located is away from the plurality of photosensitive sensors, wherein the light filter layer is configured to filter light with a wavelength in a predetermined range.