# US 2021/0278718 A1 · Display substrate, display device and method for manufacturing display substrate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0278718 A1 - Document ID: US20210278718A1 - Status: Published application - Kind: A1 - Application number: 16/343,932 - Filed: 2018-04-23 - Published: 2021-09-09 - Earliest claimed: 2017-08-18 - Assignees: Chongqing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Chongqing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Bin PENG; Yongan FENG; Chengming WEI; Zhijun XU; Daoping YU - Web page: https://patentgrep.com/patent/US20210278718A1 ## CPC - G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)} - G02F 1/133514: {Colour filters} - G02F 1/1337: Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers - G02F 1/133784: {by rubbing} - G02F 1/1339: Gaskets; Spacers; Sealing of cells - 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 display device and a manufacturing method of the display device are provided. The display device includes a base substrate and a plurality of spacers on the base substrate; each of the plurality of spacers has an end facing away from the base substrate, and the end is provided with a sloping surface; and included angels between the sloping surfaces of the plurality of spacers and the base substrate are all acute angles or are all obtuse angles. ## Claims ### Claim 1 A display device, comprising: a base substrate and a plurality of spacers on the base substrate; wherein each of the plurality of spacers has an end facing away from the base substrate, and the end is provided with a sloping surface; and included angels between the sloping surfaces of the plurality of spacers and the base substrate are all acute angles or are all obtuse angles. ### Claim 2 (depends on 1) The display device according to claim 1, wherein at least one of the plurality of spacers is in a shape of a prism. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the sloping surface of each of the plurality of spacers is a plane. ### Claim 4 (depends on 1) The display device according to claim 1, further comprising: an alignment layer on the base substrate and covering the base substrate and the plurality of spacers. ### Claim 5 (depends on 1) The display device according to claim 1, wherein a width of a portion of the sloping surface decreases gradually. ### Claim 6 (depends on 1) The display device according to claim 1, wherein a material of the plurality of spacers comprises a photoresist. ### Claim 7 (depends on 1) The display device according to claim 1, wherein the plurality of spacers comprise a plurality of main spacers and a plurality of auxiliary spacers, and a height, relative to the base substrate, of each of the plurality of auxiliary spacers is less than a height, relative to the base substrate, of each of the plurality of main spacers. ### Claim 8 (depends on 7) The display device according to claim 7, wherein the heights of the plurality of main spacers are equal to each other, and the heights of the plurality of auxiliary spacers are equal to each other. ### Claim 9 (depends on 1) The display device according to claim 1, further comprising an opposite substrate, wherein the base substrate and the opposite substrate are opposite to each other, so that the plurality of spacers are sandwiched between the base substrate and the opposite substrate. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the base substrate is a color filter substrate or an array substrate. ### Claim 11 A manufacturing method of display device, comprising: providing a base substrate; and forming a plurality of spacers on the base substrate, wherein each of the plurality of spacers has an end facing away from the base substrate, and the end is provided with a sloping surface; and included angels between the sloping surfaces of the plurality of spacers and the base substrate are all acute angles or are all obtuse anoles. ### Claim 12 (depends on 11) The manufacturing method of the display device according to claim 11, further comprising: forming an alignment layer covering the base substrate and the spacers, and performing a friction alignment process along a friction alignment direction on the alignment layer, wherein the friction alignment direction of the alignment layer is same as a moving direction of the plurality of spacers relative to a friction device, the forming the plurality of spacers comprises: forming a photoresist layer on the base substrate; performing a gray-tone photolithography process, wherein an exposure intensity in a partial exposure region corresponding to each of the plurality of spacers decreases gradually or increases gradually along the friction alignment direction of the alignment layer. ### Claim 13 (depends on 12) The manufacturing method of the display device according to claim 12, wherein the plurality of spacers are formed by using the photoresist layer. ### Claim 14 (depends on 12) The manufacturing method of the display device according to claim 12, wherein the plurality of spacers comprise a plurality of main spacers and a plurality of auxiliary spacers, the partial exposure region comprises a first partial exposure region corresponding to each of the plurality of main spacers and a second partial exposure region corresponding to each of the plurality of auxiliary spacers, and an exposure intensity in the first partial exposure region is different from an exposure intensity in the second partial exposure region. ### Claim 15 (canceled) ### Claim 16 (depends on 14) The manufacturing method of the display device according to claim 14, wherein the photoresist layer is formed by a negative photoresist, the exposure intensity in the first partial exposure region is higher than the exposure intensity in the second partial exposure region, and both the exposure intensity of the first partial exposure region and the exposure intensity of the second partial exposure region gradually increase along the friction alignment direction of the alignment layer. ### Claim 17 (depends on 14) The manufacturing method of the display device according to claim 14, wherein the photoresist layer is formed by a positive photoresist, the exposure intensity in the first partial exposure region is lower than the exposure intensity in the second partial exposure region, and both the exposure intensity of the first partial exposure region and the exposure intensity of the second partial exposure region gradually decrease along the friction alignment direction of the alignment layer. ### Claim 18 (depends on 2) The display device according to claim 2, wherein the prism is a quadrangular prism or a triangular prism. ### Claim 19 (depends on 12) The manufacturing method of the display device according to claim 12, wherein along the friction alignment direction of the alignment layer, a width, which is in a direction perpendicular to the friction alignment direction, of a portion of the sloping surface decreases gradually. ### Claim 20 (depends on 19) The manufacturing method of the display device according to claim 19, wherein the sloping surface is in a shape of a rhombus, and a diagonal of the rhombus is parallel to the friction alignment direction of the alignment layer, and along the friction alignment direction of the alignment layer, the width, which is in the direction perpendicular to the friction alignment direction, of a corner portion of the rhombus decreases gradually. ### Claim 21 (depends on 19) The manufacturing method of the display device according to claim 19, wherein the sloping surface is in a shape of a triangle, the triangle has a vertex and a bottom edge opposite to the vertex, and a line connecting the vertex and the bottom edge is perpendicular to the bottom edge and parallel to the friction alignment direction of the alignment layer, and along the friction alignment direction of the alignment layer, the width, which is in the direction perpendicular to the friction alignment direction, of an entirety of the triangle decreases gradually.