# US 10,310,688 B2 · Mutual capacitive touch substrate, mutual capacitive touch panel, and mutual capacitive touch apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,688 B2 - Document ID: US10310688B2 - Status: Granted - Kind: B2 - Application number: 15/501,852 - Filed: 2016-05-20 - Published: 2017-08-10 - Granted: 2019-06-04 - Earliest claimed: 2015-08-24 - Assignees: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Hefei Xinsheng Optoelectronics Technology Co., Ltd. - Inventors: Xiaodong Xie; Zouming Xu; Ming Hu; Ming Zhang; Min He; Jian Tian; Jing Wang - Web page: https://patentgrep.com/patent/US10310688B2 ## CPC - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - 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 3/0412: {Digitisers structurally integrated in a display} - G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract The present application discloses a mutual capacitive touch substrate comprising a matrix of a plurality of electrode units, adjacent electrode units complementarily matching each other. Each electrode unit comprises a first electrode having a first undulating boundary; a second electrode having a second undulating boundary; and a fill pattern between the first electrode and the second electrode, having an undulating boundary substantially complementary to corresponding portions of the first undulating boundary and the second undulating boundary. The first electrode, the second electrode, and the fill pattern in a same electrode unit are electrically isolated from each other. ## Claims ### Claim 1 A mutual capacitive touch substrate, comprising a matrix of a plurality of electrode units, adjacent electrode units complementarily matching each other, each electrode unit comprising: a first electrode having a first undulating boundary; a second electrode having a second undulating boundary; and a fill pattern between the first electrode and the second electrode, having an undulating boundary substantially complementary to corresponding portions of the first undulating boundary and the second undulating boundary; wherein: the first electrode, the second electrode, and the fill pattern in a same electrode unit are electrically isolated from each other; the fill pattern comprises a plurality of sub-patterns; at least one of the plurality of sub-patterns has an irregular shape; the matrix of the plurality of electrode units comprises a plurality of rows of electrode units along a first direction and a plurality of columns of electrode units along a second direction perpendicular to the first direction; a plurality of first electrodes in each row of electrode units form a first conduction channel along the first direction; a plurality of second electrodes in each column of electrode units form a second conduction channel along the second direction; and midlines of first conduction channels are spaced apart by a distance in the range of about 3 mm to about 6 mm. ### Claim 2 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein the first electrode comprises a first part, a second part, and a first bridge electrically connecting the first part and the second part; the first part, the second part, and the first bridge arranged substantially along the first direction; the second electrode comprises a third part, a fourth part, and a second bridge electrically connecting the third part and the fourth part and dividing the first electrode into the first part and the second part; the third part, the fourth part, and the second bridge arranged substantially along the second direction, the second direction intersecting the first direction; and the first part, the second part, the third part, the fourth part, and the second bridge are in a first layer, the first bridge is in a second layer different from the first layer. ### Claim 3 (depends on 2) The mutual capacitive touch substrate of claim 2, wherein the first electrode comprises at least one protrusion extending substantially along the second direction. ### Claim 4 (depends on 3) The mutual capacitive touch substrate of claim 3, wherein the at least one protrusion has an undulating boundary that is a part of the first undulating boundary, a portion of the second electrode proximal to the at least one protrusion has an undulating boundary that is a part of the second undulating boundary, a portion of the fill pattern is between the at least one protrusion and the portion of the second electrode proximal to the at least one protrusion, the portion of the fill pattern has an undulating boundary substantially complementary to the at least one protrusion and the portion of the second electrode proximal to the at least one protrusion. ### Claim 5 (depends on 3) The mutual capacitive touch substrate of claim 3, wherein the at least one protrusion comprises a plurality of protrusions that are symmetrical relative to an axis of the first electrode along the first direction. ### Claim 6 (depends on 2) The mutual capacitive touch substrate of claim 2, wherein the fill pattern comprises at least two adjacent sub-patterns between the second electrode and the first part of the first electrode, and at least two adjacent sub-patterns between the second electrode and the second part of the first electrode. ### Claim 7 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein at least a portion of the undulating boundary of the fill pattern is a smoothly curved boundary. ### Claim 8 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein at least a portion of the undulating boundary of the fill pattern is a polygonal curve. ### Claim 9 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein the first electrode, the second electrode, and the fill pattern are electrically isolated from each other. ### Claim 10 (depends on 2) The mutual capacitive touch substrate of claim 2, wherein: a plurality of second electrodes in each row of electrode units are electrically isolated from each other, and a plurality of first electrodes in each column of electrode units are electrically isolated from each other; each first conduction channel comprises a plurality of first integral electrode blocks connected by a plurality of first bridges; the first part and the second part from two adjacent electrode units respectively constitute each first integral electrode block; and each second conduction channel comprises a plurality of second integral electrode blocks connected by a plurality of second bridges; the third part and the fourth part from two adjacent electrode units respectively constitute each second integral electrode block. ### Claim 11 (depends on 10) The mutual capacitive touch substrate of claim 10, wherein the first electrode comprises a plurality of protrusions extending substantially along the second direction, the plurality of protrusions are symmetrical relative to an axis of the first electrode along the first direction; and midlines of the first conduction channels are spaced apart by a distance in the range of about 6 mm to about 10 mm, and midlines of the second conduction channels are spaced apart by a distance in the range of about 6 mm to about 10 mm. ### Claim 12 (depends on 10) The mutual capacitive touch substrate of claim 10, comprising a plurality of first conduction channel groups and a plurality of second conduction channel groups; wherein: each first conduction channel group comprises two adjacent first conduction channels electrically connected in parallel, and each second conduction channel group comprises two adjacent second conduction channels electrically connected in parallel; midlines of first conduction channel groups are spaced apart by a distance in the range of about 10 mm to about 15 mm, and midlines of second conduction channel groups are spaced apart by a distance in the range of about 10 mm to about 15 mm. ### Claim 13 (depends on 1) A mutual capacitive touch panel, comprising a mutual capacitive touch substrate of claim 1. ### Claim 14 (depends on 13) A mutual capacitive touch display apparatus, comprising the mutual capacitive touch panel of claim 13, an array substrate, and a package substrate. ### Claim 15 (depends on 14) The mutual capacitive touch display apparatus of claim 14, wherein the mutual capacitive touch panel is an in-cell touch panel. ### Claim 16 (depends on 14) The mutual capacitive touch display apparatus of claim 14, wherein the mutual capacitive touch panel is an on-cell touch panel. ### Claim 17 (depends on 14) The mutual capacitive touch display apparatus of claim 14, wherein the mutual capacitive touch panel is an add-on type touch panel. ### Claim 18 (depends on 17) The mutual capacitive touch display apparatus of claim 17, wherein the mutual capacitive touch panel is a one-glass-solution type touch panel. ### Claim 19 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein the plurality of sub-patterns have at least two different sizes. ### Claim 20 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein the plurality of sub-patterns are separated from each other by etching lines. ### Claim 21 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein a boundary of at least one of the plurality of sub-patterns forms an obtuse angle with respect to an axis of the first electrode along the first direction. ### Claim 22 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein each of the plurality of sub-patterns comprises a first boundary facing the first electrode, and a second boundary facing the second electrode, the first boundary being spaced apart from the first electrode, the second boundary being spaced apart from the second electrode. ### Claim 23 (depends on 22) The mutual capacitive touch substrate of claim 22, wherein the first boundary is substantially parallel to the second boundary. ### Claim 24 (depends on 3) The mutual capacitive touch substrate of claim 3, wherein a first portion of the plurality of sub-patterns are arranged on both sides of the first electrode, and the first portion of the plurality of sub-patterns are symmetrical relative to an axis of the first electrode along the first direction; and wherein a second portion of the plurality of sub-patterns are arranged on both sides of one of the at least one protrusion, and the second portion of the plurality of sub-patterns are symmetrical relative to an axis of the one of the at least one protrusion along the second direction. ### Claim 25 (depends on 1) The mutual capacitive touch substrate of claim 1, wherein midlines of second conduction channels are spaced apart by a distance in the range of about 3 mm to about 6 mm.