# US 11,442,585 B2 · Touch display module, electronic apparatus, and touch position detection method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,585 B2 - Document ID: US11442585B2 - Status: Granted - Kind: B2 - Application number: 17/062,761 - Filed: 2020-10-05 - Published: 2022-04-07 - Granted: 2022-09-13 - Earliest claimed: 2020-10-05 - Assignees: TPK Touch Solutions (Xiamen) Inc. - Applicants: TPK Touch Solutions (Xiamen) Inc. - Inventors: Mingchuan Lin; Wenhung Wang; Chuan Chih Fu; Tai Shih Cheng - Web page: https://patentgrep.com/patent/US11442585B2 ## CPC - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)} - G06F 3/0448: {Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch display module includes a display panel and a touch sensing layer. The touch sensing layer is embedded in the display panel and includes a plurality of sensing electrode groups. The sensing electrode groups are sequentially arranged along a first axial direction. One of the sensing electrode groups includes a first electrode block, a second electrode block, and a third electrode block spaced apart from each other. The first electrode block is located at a same side of the second electrode block and the third electrode block in the first axial direction and is located between the second electrode block and the third electrode block in a second axial direction perpendicular to the first axial direction. ## Claims ### Claim 1 An in-cell touch display module, comprising: a display panel; and a touch sensing layer embedded in the display panel and comprising a plurality of sensing electrode groups, the sensing electrode groups being sequentially arranged along a first axial direction, one of the sensing electrode groups comprising a first electrode block, a second electrode block, a third electrode block, and a fourth electrode block spaced apart from each other, wherein the first electrode block is located at a same side of the second electrode block and the third electrode block in the first axial direction and is located between the second electrode block and the third electrode block in a second axial direction perpendicular to the first axial direction, the fourth electrode block is located between the second electrode block and the third electrode block in the second axial direction, and the second electrode block and the third electrode block are located between the first electrode block and the fourth electrode block in the first axial direction. ### Claim 2 (depends on 1) The in-cell touch display module of claim 1, wherein the display panel has a viewable area, and the second electrode block and the third electrode block extend toward each other respectively from opposite two edges of the viewable area. ### Claim 3 (depends on 1) The in-cell touch display module of claim 1, wherein the first electrode block and the second electrode block form a first gap there-between, the first electrode block and the third electrode block form a second gap there-between, and extending directions of the first gap and the second gap are inclined relative to the first axial direction and the second axial direction. ### Claim 4 (depends on 3) The in-cell touch display module of claim 3, wherein an end of the first gap is connected to an end of the second gap. ### Claim 5 (depends on 3) The in-cell touch display module of claim 3, wherein a contour of at least one of the first gap or the second gap is jagged. ### Claim 6 (depends on 1) The in-cell touch display module of claim 1, wherein the display panel has a viewable area, the one of the sensing electrode groups further comprises two conductive extending portions, and the two conductive extending portions are connected to one of the first electrode block, the second electrode block, or the third electrode block and extended outside the viewable area. ### Claim 7 (depends on 1) The in-cell touch display module of claim 1, wherein the first electrode block, the second electrode block, the third electrode block, and the fourth electrode block are arranged in a ring shape. ### Claim 8 (depends on 1) The in-cell touch display module of claim 1, wherein a peripheral contour of at least one of the first electrode block, the second electrode block, or the third electrode block is substantially triangular. ### Claim 9 (depends on 1) The in-cell touch display module of claim 1, wherein orthogonal projections of all sub-pixels of the display panel projected on the touch sensing layer are within ranges of the sensing electrode groups. ### Claim 10 (depends on 1) The in-cell touch display module of claim 1, wherein the display panel is a liquid crystal display panel or an organic light-emitting diode display panel. ### Claim 11 An electronic apparatus, comprising: an in-cell touch display module, comprising: a display panel; and a touch sensing layer embedded in the display panel and comprising a plurality of sensing electrode groups, the sensing electrode groups being sequentially arranged along a first axial direction, one of the sensing electrode groups comprising a first electrode block, a second electrode block, a third electrode block, and a fourth electrode block spaced apart from each other, wherein the first electrode block is located at a same side of the second electrode block and the third electrode block in the first axial direction and is located between the second electrode block and the third electrode block in a second axial direction perpendicular to the first axial direction, the fourth electrode block is located between the second electrode block and the third electrode block in the second axial direction, and the second electrode block and the third electrode block are located between the first electrode block and the fourth electrode block in the first axial direction; and a cover plate disposed on the in-cell touch display module. ### Claim 12 A touch position detection method, applied to an electronic apparatus comprising a plurality of sensing electrode groups, the sensing electrode groups being sequentially arranged along a first axial direction and each comprising a first electrode block, a second electrode block, and a third electrode block spaced apart from each other, wherein the first electrode block is located at a same side of the second electrode block and the third electrode block in the first axial direction and is located between the second electrode block and the third electrode block in a second axial direction perpendicular to the first axial direction, and the touch position detection method comprises: obtaining a first axis coordinate of a touch point in the first axial direction according to one of the sensing electrode groups with a capacitance change; and calculating a second axis coordinate of the touch point in the second axial direction according to capacitance changes of at least two of the first electrode block, the second electrode block, or the third electrode block of the one of the sensing electrode groups. ### Claim 13 (depends on 12) The touch position detection method of claim 12, wherein the calculating the second axis coordinate comprises: determining whether the second electrode block and the third electrode block have capacitance changes at the same time; if the second electrode block and the third electrode block have the capacitance changes at the same time, calculating the second axis coordinate according to the capacitance changes of the first electrode block, the second electrode block, and the third electrode block; and if the second electrode block and the third electrode block do not have the capacitance changes at the same time, calculating the second axis coordinate according to the capacitance changes of the first electrode block and the second electrode block or the capacitance changes of the first electrode block and the third electrode block. ### Claim 14 (depends on 1) The in-cell touch display module of claim 1, comprising an upper substrate above the touch sensing layer. ### Claim 15 (depends on 1) The in-cell touch display module of claim 1, wherein the display panel comprises: a thin film transistor layer above the touch sensing layer; and a liquid crystal layer above the thin film transistor layer. ### Claim 16 (depends on 15) The in-cell touch display module of claim 15, wherein the display panel comprises an insulating layer between the touch sensing layer and the thin film transistor layer. ### Claim 17 (depends on 1) The in-cell touch display module of claim 1, wherein the display panel comprises at least one of a liquid crystal layer or an organic light emitting layer over the touch sensing layer. ### Claim 18 (depends on 1) The in-cell touch display module of claim 1, wherein the display panel comprises: an organic light emitting layer over the touch sensing layer; and a metal conductive layer over the organic light emitting layer. ### Claim 19 (depends on 11) The electronic apparatus of claim 11, wherein: the in-cell touch display module further comprises an upper substrate above the touch sensing layer, and the cover plate is above the upper substrate. ### Claim 20 (depends on 11) The electronic apparatus of claim 11, wherein the first electrode block, the second electrode block, the third electrode block, and the fourth electrode block are arranged in a ring shape.