# US 12,604,638 B2 · Display substrate, display mother board and display apparatus including hollowed-out region > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,638 B2 - Document ID: US12604638B2 - Status: Granted - Kind: B2 - Application number: 17/912,623 - Filed: 2021-11-15 - Published: 2024-06-20 - Granted: 2026-04-14 - Earliest claimed: 2021-04-21 - Assignees: Chengdu Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Chengdu BOE Optoelectronics Technology Co., Ltd.; BOE Technology Group Co., Ltd. - Inventors: Wei Wang; Bin Liu; Xin Zhou - Web page: https://patentgrep.com/patent/US12604638B2 ## CPC - H10K 59/873: {Encapsulations} - H10K 59/40: OLEDs integrated with touch screens - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Provided is a display substrate, which includes: a base substrate, a light-emitting unit provided on the base substrate, and an encapsulation layer provided on a side of the light-emitting unit away from the base substrate. The display substrate includes a display area and a non-display area at a periphery of the display area, a functional layer is arranged on a side of the encapsulation layer away from the base substrate, the functional layer includes a patterned region in the non-display area, a pattern of the patterned region includes a hollowed-out region and a filling region, and the hollowed-out region forms an air column. ## Claims ### Claim 1 A display substrate, comprising: a base substrate, a light-emitting unit on the base substrate, and an encapsulation layer on a side of the light-emitting unit away from the base substrate, wherein the display substrate comprises a display area and a non-display area at a periphery of the display area, a functional layer is arranged on a side of the encapsulation layer away from the base substrate, the functional layer comprises a patterned region in the non-display area, a pattern of the patterned region comprises a hollowed-out region and a filling region, and the hollowed-out region forms an air column; and wherein the functional layer consists of either a touch control film layer or a color film layer, wherein the touch control film layer comprises a first metal layer, an insulating layer, a second metal layer and a protective layer that are arranged in sequence along a direction away from the base substrate, and the pattern is formed on at least one film layer of: the first metal layer, the insulating layer, the second metal layer and the protective layer. ### Claim 2 (depends on 1) The display substrate according to claim 1, wherein the non-display area comprises a barrier wall surrounding the periphery of the display area, the patterned region is located in a first region comprising the barrier wall, a first edge of the first region at a side of the barrier wall away from the display area is at a distance of 50 μm to 300 μm from the barrier wall, and a second edge of the first region at a side of the barrier wall close to the display area is at a distance of 50 μm to 150 μm from the barrier wall. ### Claim 3 (depends on 1) The display substrate according to claim 1, wherein the pattern comprises a first sub-pattern at one side of the display area along a first direction, the first sub-pattern comprises a plurality of hollowed-out regions and a plurality of filling regions that are arranged alternately along the first direction, and each of the hollowed-out regions extend in a direction intersecting with the first direction. ### Claim 4 (depends on 3) The display substrate according to claim 3, wherein the plurality of hollowed-out regions comprises a first hollowed-out sub-region at an edge of the display substrate and a second hollowed-out sub-region other than the first hollowed-out sub-region, and in the first direction, a width of the second hollowed-out sub-region decreases as a distance between the second hollowed-out sub-region and the first hollowed-out sub-region increases. ### Claim 5 (depends on 3) The display substrate according to claim 3, wherein a width of each of the hollowed-out regions in the first direction is 3 μm to 50 μm. ### Claim 6 (depends on 1) The display substrate according to claim 1, wherein the pattern comprises a second sub-pattern at one side of the display area along a first direction, the second sub-pattern comprises a hollowed-out region and a filling region arranged alternately, the filling region comprises a plurality of columns of filling sub-regions arranged at intervals along the first direction, each column of the filling sub-regions comprises a plurality of filling portions arranged at intervals along a direction perpendicular to the first direction, and the hollowed-out region comprises first hollowed-out sub-regions located between adjacent two columns of filling sub-regions, and second hollowed-out sub-regions located between adjacent two filling portions of the filling portions. ### Claim 7 (depends on 6) The display substrate according to claim 6, wherein the plurality of first hollowed-out sub-regions comprises a first hollowed-out portion located at an edge of the display substrate and a second hollowed-out portion other than the first hollowed-out portion, and in the first direction, a width of the second hollowed-out portion decreases as the distance between the second hollowed-out portion and the first hollowed-out portion increases. ### Claim 8 (depends on 6) The display substrate according to claim 6, wherein a width of adjacent two first hollowed-out sub-regions in the first direction is 3 μm to 50 μm, and a width of adjacent two second hollowed-out sub-regions in a second direction perpendicular to the first direction is 3 μm to 50 μm. ### Claim 9 (depends on 6) The display substrate according to claim 6, wherein filling portions in adjacent two columns of filling sub-regions are arranged in a staggered manner. ### Claim 10 (depends on 6) The display substrate according to claim 6, wherein each of the filling portions has a cross section of strip-shaped structure in a direction parallel to the base substrate, an extension direction of the strip-shaped structure has an included angle with the first direction, adjacent two filling portions in the same column of filling sub-regions are inclined in opposite directions, and adjacent two filling portions in adjacent two columns of filling sub-regions are inclined in a same direction. ### Claim 11 (depends on 1) A display mother board, used to form the display substrate according to claim 1 along a cut line, wherein an orthographic projection of the cut line onto the functional layer is located within the air column. ### Claim 12 (depends on 1) A display apparatus, comprising the display substrate according to claim 1.