# US 12,181,751 B2 · Display panel, array substrate, 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 12,181,751 B2 - Document ID: US12181751B2 - Status: Granted - Kind: B2 - Application number: 17/771,605 - Filed: 2022-04-13 - Published: 2024-08-08 - Granted: 2024-12-31 - Earliest claimed: 2022-03-25 - Assignees: Tcl China Star Optoelectronics Technology Co., Ltd. - Applicants: Tcl China Star Optoelectronics Technology Co., Ltd. - Inventors: Jing Liu - Web page: https://patentgrep.com/patent/US12181751B2 ## CPC - G02F 1/134336: {Matrix} - G02F 1/1343: Electrodes {(reflective electrodes G02F1/133553)} - G02F 1/134318: {having a patterned common electrode} - G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making} - G02F 2201/121: common or background - G02F 2201/123: pixel - 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 ## Abstract The present application discloses a display panel, an array substrate, and a manufacturing method thereof. In the display panel of the present application, capacitance of a array substrate is formed between a first common electrode and a pixel electrode, and a second electrode layer is provided with a second common electrode in a same layer as a drain electrode and a source electrode, and the first common electrode is connected to the second common electrode, which can prevent a difference between positive and negative polarities of the first common electrode and the pixel electrode, thereby solving the problem of horizontal crosstalk. ## Claims ### Claim 1 An array substrate, comprising: a substrate; a first electrode layer disposed on the substrate, and the first electrode layer comprising a first common electrode; a first insulating layer disposed on the first electrode layer; a semiconductor layer disposed on the first insulating layer; a second electrode layer disposed on the semiconductor layer and covering the first insulating layer, wherein the second electrode layer comprises a drain electrode, a source electrode, and a second common electrode, and the drain electrode and the source electrode are respectively connected to the semiconductor layer; a first passivation layer disposed on the second electrode layer; and a third electrode layer disposed on the first passivation layer, and the third electrode layer comprising a pixel electrode; wherein an orthographic projection of the first common electrode on the substrate at least partially overlaps with an orthographic projection of the pixel electrode on the substrate, and the second common electrode is connected to the first common electrode through an opening in the first insulating layer; and wherein the third electrode layer further comprises a first connection electrode, and the first connection electrode is connected to the second common electrode and the first common electrode through an opening penetrating the first insulating layer and the first passivation layer. ### Claim 2 (depends on 1) The array substrate according to claim 1, wherein the orthographic projection of the first common electrode on the substrate at least partially overlaps with an orthographic projection of the second common electrode on the substrate. ### Claim 3 (depends on 1) The array substrate according to claim 1, wherein the orthographic projection of the first common electrode on the substrate, the orthographic projection of the pixel electrode on the substrate, and an orthographic projection of the second common electrode on the substrate at least partially overlap. ### Claim 4 (depends on 1) The array substrate according to claim 1, wherein the second electrode layer further comprises a second connection electrode, a plurality of first common electrodes are arranged in an array, a plurality of second common electrodes are arranged in an array, and the second connection electrode is connected to the second common electrodes in a same row. ### Claim 5 (depends on 4) The array substrate according to claim 4, wherein the first electrode layer further comprises a third connection electrode, and the third connection electrode is connected to the first common electrodes in a same column. ### Claim 6 (depends on 4) The array substrate according to claim 4, wherein the substrate comprises a transparent area and an opaque area, the transparent area comprises a first trunk electrode area, a second trunk electrode area, and a branch electrode area, and the second connection electrode is disposed in the opaque area and the first trunk electrode area. ### Claim 7 (depends on 6) The array substrate according to claim 6, wherein the first electrode layer further comprises a third common electrode, the second electrode layer further comprises a fourth common electrode, the third common electrode and the fourth common electrodes are disposed in the first trunk electrode area, and an orthographic projection of the third common electrode on the substrate overlaps with an orthographic projection of the fourth common electrode on the substrate. ### Claim 8 (depends on 6) The array substrate according to claim 6, wherein the first electrode layer further comprises a fifth common electrode and a fifth connection electrode, the second electrode layer further comprises a sixth common electrode and a sixth connection electrode, and the fifth common electrode and the sixth common electrode are disposed in the second trunk electrode area; and an orthographic projection of the fifth common electrode on the substrate overlaps with an orthographic projection of the sixth common electrode on the substrate. ### Claim 9 (depends on 6) The array substrate according to claim 6, wherein the first electrode layer further comprises a fifth common electrode and a fifth connection electrode, the second electrode layer further comprises a sixth common electrode and a sixth connection electrode, and the fifth common electrode and the sixth common electrode are disposed in the second trunk electrode area; and wherein the fifth common electrode is connected to the third common electrode, the sixth common electrode is connected to the fourth common electrode, and an orthographic projection of the fifth common electrode on the substrate overlaps with an orthographic projection of the sixth common electrode on the substrate. ### Claim 10 A method of manufacturing an array substrate, comprising: providing a substrate, forming a first electrode layer on the substrate, the first electrode layer comprising a first common electrode; forming a first insulating layer on the first electrode layer; forming a semiconductor layer on the first insulating layer; forming a second electrode layer on the semiconductor layer, wherein the second electrode layer covers the first insulating layer, the second electrode layer comprises a drain electrode, a source electrode, and a second common electrode, and the drain electrode and the source electrode are respectively connected to the semiconductor layer; forming a first passivation layer on the second electrode layer; and forming a third electrode layer on the first passivation layer, the third electrode layer comprising a pixel electrode and a first connection electrode; wherein an orthographic projection of the first common electrode on the substrate at least partially overlaps with an orthographic projection of the pixel electrode on the substrate, and the first connection electrode is connected to the second common electrode and the first common electrode through an opening penetrating the first insulating layer and the first passivation layer. ### Claim 11 A display panel, comprising an array substrate, a color filter substrate disposed opposite to the array substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate; wherein the array substrate comprises: a substrate; a first electrode layer disposed on the substrate, and the first electrode layer comprising a first common electrode; a first insulating layer disposed on the first electrode layer; a semiconductor layer disposed on the first insulating layer; a second electrode layer disposed on the semiconductor layer and covering the first insulating layer, wherein the second electrode layer comprises a drain electrode, a source electrode, and a second common electrode, and the drain electrode and the source electrode are respectively connected to the semiconductor layer; a first passivation layer disposed on the second electrode layer; and a third electrode layer disposed on the first passivation layer, and the third electrode layer comprising a pixel electrode; wherein an orthographic projection of the first common electrode on the substrate at least partially overlaps with an orthographic projection of the pixel electrode on the substrate, and the second common electrode is connected to the first common electrode through an opening in the first insulating layer; and wherein the third electrode layer further comprises a first connection electrode, and the first connection electrode is connected to the second common electrode and the first common electrode through an opening penetrating the first insulating layer and the first passivation layer. ### Claim 12 (depends on 11) The display panel according to claim 11, wherein the orthographic projection of the first common electrode on the substrate at least partially overlaps with an orthographic projection of the second common electrode on the substrate. ### Claim 13 (depends on 11) The display panel according to claim 11, wherein the orthographic projection of the first common electrode on the substrate, the orthographic projection of the pixel electrode on the substrate, and an orthographic projection of the second common electrode on the substrate at least partially overlap. ### Claim 14 (depends on 11) The display panel according to claim 11, wherein the second electrode layer further comprises a second connection electrode, a plurality of first common electrodes are arranged in an array, a plurality of second common electrodes are arranged in an array, and the second connection electrode is connected to the second common electrodes in a same row. ### Claim 15 (depends on 14) The display panel according to claim 14, wherein the first electrode layer further comprises a third connection electrode, and the third connection electrode is connected to the first common electrodes in a same column. ### Claim 16 (depends on 14) The display panel according to claim 14, wherein the substrate comprises a transparent area and an opaque area, the transparent area comprises a first trunk electrode area, a second trunk electrode area, and a branch electrode area, and the second connection electrode is disposed in the opaque area and on the first trunk electrode area. ### Claim 17 (depends on 16) The display panel according to claim 16, wherein the first electrode layer further comprises a third common electrode, the second electrode layer further comprises a fourth common electrode, the third common electrode and the fourth common electrodes are disposed in the first trunk electrode area, and an orthographic projection of the third common electrode on the substrate overlaps with an orthographic projection of the fourth common electrode on the substrate. ### Claim 18 (depends on 16) The display panel according to claim 16, wherein the first electrode layer further comprises a fifth common electrode and a fifth connection electrode, the second electrode layer further comprises a sixth common electrode and a sixth connection electrode, and the fifth common electrode and the sixth common electrode are disposed in the second trunk electrode area; and wherein an orthographic projection of the fifth common electrode on the substrate overlaps with an orthographic projection of the sixth common electrode on the substrate.