# US 11,307,727 B2 · Touch control display panel, touch control display apparatus, touch substrate, and method of fabricating touch control display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,727 B2 - Document ID: US11307727B2 - Status: Granted - Kind: B2 - Application number: 16/755,659 - Filed: 2019-11-18 - Published: 2021-07-22 - Granted: 2022-04-19 - Earliest claimed: 2018-11-23 - Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd.; BOE Technology Group Co., Ltd. - Inventors: Yuedi He; Guoqiang Tang - Web page: https://patentgrep.com/patent/US11307727B2 ## CPC - G06F 3/04144: {using an array of force sensing means (position sensing using the local deformation of sensor cells G06F3/0447)} - G06F 3/045: using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch control display panel is provided. The touch control display panel includes a base substrate; and a black matrix layer on the base substrate and in an inter-subpixel region of the touch control display panel. The black matrix layer includes a non-sensing portion, and a plurality of sensing portions spaced apart from the non-sensing portion. The touch control display panel further includes a first electrode layer including a plurality of first electrode blocks respectively between the plurality of sensing portions and the base substrate; and a second electrode layer including a plurality of second electrode blocks respectively on a side of the plurality of sensing portions away from the first electrode layer. A respective one of the plurality of sensing portions is configured to undergo a restorable change in electrical resistivity in response to a pressure from a touch. ## Claims ### Claim 1 A touch control display panel, comprising: a base substrate; and a black matrix layer on the base substrate and in an inter-subpixel region of the touch control display panel; wherein the black matrix layer comprises a non-sensing portion, and a plurality of sensing portions spaced apart from the non-sensing portion; wherein the touch control display panel further comprises: a first electrode layer comprising a plurality of first electrode blocks respectively between the plurality of sensing portions and the base substrate; and a second electrode layer comprising a plurality of second electrode blocks respectively on a side of the plurality of sensing portions away from the first electrode layer; wherein a respective one of the plurality of sensing portions is configured to undergo a restorable change in electrical resistivity in response to a pressure from a touch, the non-sensing portion and the plurality of sensing portions comprise a same conductive black material; a same side of the base substrate is in direct contact with the non-sensing portion and in direct contact with the plurality of first electrode blocks; the plurality of first electrode blocks are respectively in direct contact with the plurality of sensing portions; and the plurality of second electrode blocks are respectively in direct contact with the plurality of sensing portions. ### Claim 2 (depends on 1) The touch control display panel of claim 1, wherein the plurality of first electrode blocks are respectively in direct contact with the plurality of sensing portions; the plurality of second electrode blocks are respectively in direct contact with the plurality of sensing portions; and a respective one of the plurality of first electrode blocks, the respective one of the plurality of sensing portions, and a respective one of the plurality of second electrode blocks form a touch unit configured to detect a change in electrical resistivity in the respective one of the plurality of sensing portions in response to the pressure from the touch. ### Claim 3 (depends on 2) The touch control display panel of claim 2, wherein an orthographic projection of the respective one of the plurality of first electrode blocks on the base substrate at least partially overlaps with an orthographic projection of the respective one of the plurality of sensing portions on the base substrate; and an orthographic projection of the respective one of the plurality of second electrode blocks on the base substrate at least partially overlaps with the orthographic projection of the respective one of the plurality of sensing portions on the base substrate. ### Claim 4 (depends on 1) The touch control display panel of claim 1, wherein a thickness of the non-sensing portion is greater than a thickness of each of the plurality of sensing portions. ### Claim 5 (depends on 2) The touch control display panel of claim 2, wherein a combined thickness of the respective one of the plurality of first electrode blocks, the respective one of the plurality of sensing portions, and the respective one of the plurality of second electrode blocks in the touch unit is substantially the same as a thickness of the non-sensing portion. ### Claim 6 (depends on 5) The touch control display panel of claim 5, wherein a thickness of the respective one of the plurality of first electrode blocks is in a range of 3000 {acute over (Å)} to 5000 {acute over (Å)}; a thickness of the respective one of the plurality of sensing portions is in a range of 2 μm to 3 μm; and a thickness of the respective one of the plurality of second electrode blocks is in a range of 3000 {acute over (Å)} to 5000 {acute over (Å)}. ### Claim 7 (depends on 1) The touch control display panel of claim 1, further comprising: a plurality of first signal lines respectively electrically connected to the plurality of first electrode blocks, and configured to apply a common voltage to the plurality of first electrode blocks; and a plurality of second signal lines respectively electrically connected to the plurality of second electrode blocks, and configured to transmit sensing signals from the plurality of second electrode blocks to an integrated circuit. ### Claim 8 (depends on 1) The touch control display panel of claim 1, wherein the plurality of sensing portions are arranged in a form of array in the touch control display panel. ### Claim 9 (depends on 1) The touch control display panel of claim 1, wherein the non-sensing portion and the plurality of sensing portions together define a plurality of subpixel regions; the touch control display panel further comprises a plurality of color filter blocks respectively in the plurality of subpixel regions; a respective one of the plurality of non-sensing portions is in direct contact with at least one adjacent color filter block; and the respective one of the plurality of sensing portions, a respective one of the plurality of first electrode blocks, a respective one of the plurality of second electrode blocks are in direct contact with a same adjacent color filter block. ### Claim 10 (depends on 1) A touch control display apparatus, comprising the touch control display panel of claim 1, and one or more integrated circuits connected to the touch control display panel. ### Claim 11 A touch substrate, comprising: a base substrate; and a black matrix layer on the base substrate and in an inter-subpixel region of the touch substrate; wherein the black matrix layer comprises a non-sensing portion, and a plurality of sensing portions spaced apart from the non-sensing portion; wherein the touch substrate further comprises: a first electrode layer comprising a plurality of first electrode blocks respectively between the plurality of sensing portions and the base substrate; and a second electrode layer comprising a plurality of second electrode blocks respectively on a side of the plurality of sensing portions away from the first electrode layer; wherein a respective one of the plurality of sensing portions is configured to undergo a restorable change in electrical resistivity in response to a pressure from a touch; the non-sensing portion and the plurality of sensing portions comprise a same conductive black material; a same side of the base substrate is in direct contact with the non-sensing portion and in direct contact with the plurality of first electrode blocks; the plurality of first electrode blocks are respectively in direct contact with the plurality of sensing portions; and the plurality of second electrode blocks are respectively in direct contact with the plurality of sensing portions. ### Claim 12 (depends on 11) The touch substrate of claim 11, wherein the plurality of first electrode blocks are respectively in direct contact with the plurality of sensing portions; the plurality of second electrode blocks are respectively in direct contact with the plurality of sensing portions; and a respective one of the plurality of first electrode blocks, the respective one of the plurality of sensing portions, and a respective one of the plurality of second electrode blocks form a touch unit configured to detect a change in electrical resistivity in the respective one of the plurality of sensing portions in response to the pressure from the touch. ### Claim 13 (depends on 11) The touch substrate of claim 11, wherein an orthographic projection of the respective one of the plurality of first electrode blocks on the base substrate at least partially overlaps with an orthographic projection of the respective one of the plurality of sensing portions on the base substrate; and an orthographic projection of the respective one of the plurality of second electrode blocks on the base substrate at least partially overlaps with the orthographic projection of the respective one of the plurality of sensing portions on the base substrate. ### Claim 14 (depends on 11) The touch substrate of claim 11, wherein a thickness of the non-sensing portion is greater than a thickness of each of the plurality of sensing portions. ### Claim 15 (depends on 12) The touch substrate of claim 12, wherein a combined thickness of the respective one of the plurality of first electrode blocks, the respective one of the plurality of sensing portions, and the respective one of the plurality of second electrode blocks in the touch unit is substantially the same as a thickness of the non-sensing portion. ### Claim 16 (depends on 11) The touch substrate of claim 11, wherein the non-sensing portion and the plurality of sensing portions together define a plurality of subpixel regions; the touch control display panel further comprises a plurality of color filter blocks respectively in the plurality of subpixel regions; a respective one of the plurality of non-sensing portions is in direct contact with at least one adjacent color filter block; and the respective one of the plurality of sensing portions, a respective one of the plurality of first electrode blocks, a respective one of the plurality of second electrode blocks are in direct contact with a same adjacent color filter block. ### Claim 17 (depends on 11) The touch substrate of claim 11, further comprising: a plurality of first signal lines respectively electrically connected to the plurality of first electrode blocks, and configured to apply a common voltage to the plurality of first electrode blocks; and a plurality of second signal lines respectively electrically connected to the plurality of second electrode blocks, and configured to transmit sensing signals from the plurality of second electrode blocks to an integrated circuit. ### Claim 18 (depends on 11) The touch substrate of claim 11, wherein the plurality of sensing portions are arranged in a form of array in the touch substrate. ### Claim 19 A method of fabricating a touch control display panel, comprising: providing a base substrate; and forming a black matrix layer on a base substrate and in an inter-subpixel region of the touch control display panel; wherein forming the black matrix layer comprises forming a non-sensing portion, and forming a plurality of sensing portions spaced apart from the non-sensing portion; wherein the method further comprises: forming a first electrode layer comprising a plurality of first electrode blocks respectively between the plurality of sensing portions and the base substrate; and forming a second electrode layer comprising a plurality of second electrode blocks respectively on a side of the plurality of sensing portions away from the first electrode layer; wherein a respective one of the plurality of sensing portions is formed to undergo a restorable change in electrical resistivity in response to a pressure from a touch; the non-sensing portion and the plurality of sensing portions comprise a same conductive black material; a same side of the base substrate is in direct contact with the non-sensing portion and in direct contact with the plurality of first electrode blocks; the plurality of first electrode blocks are respectively in direct contact with the plurality of sensing portions; and the plurality of second electrode blocks are respectively in direct contact with the plurality of sensing portions. ### Claim 20 (depends on 19) The method of claim 19, wherein the non-sensing portion and the plurality of sensing portions together define a plurality of subpixel regions; the method further comprises forming a plurality of color filter blocks respectively in the plurality of subpixel regions; a respective one of the plurality of non-sensing portions is in direct contact with at least one adjacent color filter block; and the respective one of the plurality of sensing portions, a respective one of the plurality of first electrode blocks, a respective one of the plurality of second electrode blocks are in direct contact with a same adjacent color filter block.