# US 10,503,027 B2 · Curved display panel, manufacturing method thereof and curved display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,503,027 B2 - Document ID: US10503027B2 - Status: Granted - Kind: B2 - Application number: 15/952,286 - Filed: 2018-04-13 - Published: 2019-02-28 - Granted: 2019-12-10 - Earliest claimed: 2017-08-31 - Assignees: Boe Technology Group Co., Ltd.; Chongqing Boe Optoelectronics Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Chongqing Boe Optoelectronics Technology Co., Ltd. - Inventors: Jungho Park; Fangzhuan Liu; Ting Ye; Jingyong Hu - Web page: https://patentgrep.com/patent/US10503027B2 ## CPC - G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)} - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G02F 1/133371: {Cells with varying thickness of the liquid crystal layer} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G02F 1/13396: {Spacers having different sizes} - 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 curved display panel includes a first substrate and a second substrate that are opposite to each other, a liquid crystal layer disposed in a gap between the first substrate and the second substrate, wherein the first substrate is provided with spacers for supporting the first substrate and the second substrate to form the gap, and arrangement densities of the spacers are gradually reduced from the center of the curved display panel to either side of non-curved edges of the curved display panel. ## Claims ### Claim 1 A curved display panel comprising: a first substrate and a second substrate opposite to each other; a liquid crystal layer disposed in a gap between the first substrate and the second substrate; and wherein the first substrate is provided with spacers for supporting the first substrate and the second substrate to form the gap, and densities of the spacers are gradually reduced from the center of the curved display panel to either side of non-curved edges of the curved display panel; and from the center a plurality of pillow pads distributed on the side of the second substrate close to the liquid crystal layer, with one end of the spacer close to the second substrate abutting against the pillow pad, wherein of the curved display panel to either side of the non-curved edges, heights of the surfaces of the plurality of pillow pads abutting against the spacers gradually increase. ### Claim 2 (depends on 1) The curved display panel according to claim 1, wherein a ratio of the densities of providing the spacers at a central position of the curved display panel to densities of providing the spacers at either side of the non-curved edges of the curved display panel is greater than 1 and equal to or less than 3. ### Claim 3 (depends on 2) The curved display panel according to claim 2, wherein between the first substrate and the second substrate, a black matrix frame is disposed on an outer periphery of the liquid crystal layer, at least along the two sides of the non-curved edges of the curved display panel. ### Claim 4 (depends on 3) The curved display panel according to claim 3, wherein the black matrix frame is disposed on each side of the outer periphery of the liquid crystal layer, and black matrix frames at adjacent sides are connected end to end. ### Claim 5 (depends on 1) The curved display panel according to claim 1, wherein the pillow pad is disposed corresponding to the spacer, the pillow pad is a disc shape structure depressed in the center, and the surface abutting against the spacer is the center of the disc shape structure. ### Claim 6 (depends on 5) The curved display panel according to claim 5, wherein between the first substrate and the second substrate, a black matrix frame is disposed on an outer periphery of the liquid crystal layer, at least along the two sides of the non-curved edges of the curved display panel. ### Claim 7 (depends on 1) The curved display panel according to claim 1, wherein the pillow pad is a metal pillow pad. ### Claim 8 (depends on 7) The curved display panel according to claim 7, wherein between the first substrate and the second substrate, a black matrix frame is disposed on an outer periphery of the liquid crystal layer, at least along the two sides of the non-curved edges of the curved display panel. ### Claim 9 (depends on 1) The curved display panel according to claim 1, wherein between the first substrate and the second substrate, a black matrix frame is disposed on an outer periphery of the liquid crystal layer, at least along the two sides of the non-curved edges of the curved display panel. ### Claim 10 (depends on 9) The curved display panel according to claim 9, wherein the black matrix frame is disposed on each side of the outer periphery of the liquid crystal layer, and black matrix frames at adjacent sides are connected end to end. ### Claim 11 (depends on 1) A curved display device comprising the curved display panel according to claim 1. ### Claim 12 (depends on 11) The curved display device according to claim 11, wherein a ratio of the densities of providing the spacers at a central position of the curved display panel to the densities of providing the spacers at either side of the non-curved edges of the curved display panel is greater than 1 and equal to or less than 3. ### Claim 13 (depends on 11) The curved display device according to claim 11, wherein the pillow pad is disposed corresponding to the spacer, the pillow pad is a disc shape structure depressed in the center, and the surface abutting against the spacer is the center of the disc shape structure. ### Claim 14 A method for manufacturing a curved display panel, comprising: forming a display panel, the display panel comprising a first substrate and a second substrate that are opposite to each other, and a liquid crystal layer disposed in a gap between the first substrate and the second substrate, wherein the first substrate is provided with spacers for supporting the first substrate and the second substrate to form the gap, and densities of the spacers are gradually reduced from the center of the curved display panel to either side of non-curved edges of the curved display panel; providing a plurality of pillow pads on the side of the second substrate close to the liquid crystal layer, wherein heights of the surfaces of the plurality of pillow pads abutting against the spacers gradually increase from the center of the display panel to either side of the non-curved edges; bending and fixing the display panel to form the curved display panel. ### Claim 15 (depends on 14) The method for manufacturing a curved display panel according to claim 14, wherein the step of forming the display panel comprises: between the first substrate and the second substrate, providing a black matrix frame at the outer periphery of the liquid crystal layer, at least along the two sides of the non-curved edges of the display panel.