# US 2017/0285409 A1 · Liquid crystal display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0285409 A1 - Document ID: US20170285409A1 - Status: Published application - Kind: A1 - Application number: 15/118,103 - Filed: 2016-06-17 - Published: 2017-10-05 - Earliest claimed: 2016-03-30 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Technology Co. Ltd. - Inventors: Bangyin PENG - Web page: https://patentgrep.com/patent/US20170285409A1 ## CPC - G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes} - G02F 1/1337: Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers - G02F 1/133753: {with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle} - G02F 1/1343: Electrodes {(reflective electrodes G02F1/133553)} - G02F 1/134309: {characterised by their geometrical arrangement} - G02F 1/133757: {with different alignment orientations} - G02F 1/133776: {having structures locally influencing the alignment, e.g. unevenness} - G02F 1/134345: {Subdivided pixels, e.g. for grey scale or redundancy} - 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 A liquid crystal display panel and a display device are provided. The liquid crystal display panel has a plurality of sub-pixel units, and each of the sub-pixel units has four photic areas. The liquid crystal display panel further has slits arranged in corresponding positions of an upper electrode and/or a lower electrode corresponding to a boundary of adjacent photic areas, and an opening direction of the slits is parallel to an alignment direction of liquid crystal molecules in the photic area where the slits are located at. The corresponding dark fringes can be effectively reduced by arranging the slits in the upper electrode or the lower electrode. ## Claims ### Claim 1 A liquid crystal display panel, comprising a plurality of sub-pixel units, each of the sub-pixel units constructed by an upper electrode, a liquid crystal layer and a lower electrode, the sub-pixel unit having four photic areas, the adjacent photic areas having different alignment directions from each other, boundaries of the adjacent photic areas comprising a horizontal boundary or a vertical boundary; wherein slits are arranged periodically in corresponding positions of the upper electrode and/or the lower electrode corresponding to the boundaries of the adjacent photic areas, an opening direction of the slit is parallel to an alignment direction of liquid crystal molecules in the photic areas where the slits are located at, and the slits form an angle of 45 degrees with respect to the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary or the vertical boundary. ### Claim 2 (depends on 1) The liquid crystal display panel according to claim 1, wherein the slits are respectively disposed at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary of the adjacent photic areas. ### Claim 3 (depends on 2) The liquid crystal display panel according to claim 2, wherein the slits located at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary of the adjacent photic areas are interlinked to each other. ### Claim 4 (depends on 1) The liquid crystal display panel according to claim 1, wherein the slits are respectively disposed at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the vertical boundary of the adjacent photic areas. ### Claim 5 (depends on 4) The liquid crystal display panel according to claim 4, wherein the slits located at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the vertical boundary of the adjacent photic areas are interlinked to each other. ### Claim 6 (depends on 1) The liquid crystal display panel according to claim 1, wherein the slits are respectively disposed at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary and the vertical boundary of the adjacent photic areas. ### Claim 7 (depends on 1) The liquid crystal display panel according to claim 1, wherein an intersection of the horizontal boundary and the vertical boundary is a junction center, the slits are disposed in the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary and/or the vertical boundary within a predetermined distance from the junction center. ### Claim 8 (depends on 7) The liquid crystal display panel according to claim 7, wherein the adjacent slits located in the corresponding positions of the upper electrode and/or the lower electrode corresponding to the junction center within the same distance from the junction center are interlinked to each other. ### Claim 9 A liquid crystal display panel, comprising a plurality of sub-pixel units, each of the sub-pixel units constructed by an upper electrode, a liquid crystal layer and a lower electrode, the sub-pixel unit having four photic areas, the adjacent photic areas having different alignment directions from each other, boundaries of the adjacent photic areas comprising a horizontal boundary or a vertical boundary; wherein slits are disposed in corresponding positions of the upper electrode and/or the lower electrode corresponding to the boundaries of the adjacent photic areas, an opening direction of the slits is parallel to an alignment direction of liquid crystal molecules in the photic areas where the slits are located in. ### Claim 10 (depends on 9) The liquid crystal display panel according to claim 9, wherein the slits are respectively disposed at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary of the adjacent photic areas. ### Claim 11 (depends on 10) The liquid crystal display panel according to claim 10, wherein the slits located at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary of the adjacent photic areas are interlinked to each other. ### Claim 12 (depends on 9) The liquid crystal display panel according to claim 9, wherein the slits are respectively disposed at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the vertical boundary of the adjacent photic areas. ### Claim 13 (depends on 12) The liquid crystal display panel according to claim 12, wherein the slits located at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the vertical boundary of the adjacent photic areas are interlinked to each other. ### Claim 14 (depends on 9) The liquid crystal display panel according to claim 9, wherein the slits are respectively disposed at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary and the vertical boundary of the adjacent photic areas. ### Claim 15 (depends on 14) The liquid crystal display panel according to claim 14, wherein the slits located at both sides of the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary and the vertical boundary of the adjacent photic areas are interlinked to each other. ### Claim 16 (depends on 9) The liquid crystal display panel according to claim 9, wherein an intersection of the horizontal boundary and the vertical boundary is a junction center, the slits are disposed in the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary and/or the vertical boundary within a predetermined distance from the junction center. ### Claim 17 (depends on 16) The liquid crystal display panel according to claim 16, wherein the adjacent slits located at a corresponding position of the upper electrode and/or the lower electrode corresponding to the junction center within the same distance from the junction center are interlinked to each other. ### Claim 18 (depends on 9) The liquid crystal display panel according to claim 9, wherein the slits located corresponding to the boundaries of the adjacent photic areas are arranged periodically. ### Claim 19 (depends on 9) The liquid crystal display panel according to claim 9, wherein the slits form an angle of 45 degrees with respect to the corresponding positions of the upper electrode and/or the lower electrode corresponding to the horizontal boundary or the vertical boundary. ### Claim 20 (depends on 9) A display device, comprising a liquid crystal display panel according to claim 9.