# US 11,910,644 B2 · Display apparatus having zero bezel by bending bezel area > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,644 B2 - Document ID: US11910644B2 - Status: Granted - Kind: B2 - Application number: 17/510,727 - Filed: 2021-10-26 - Published: 2022-02-10 - Granted: 2024-02-20 - Earliest claimed: 2017-10-31 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Moonsun Lee; Eunah Kim - Web page: https://patentgrep.com/patent/US11910644B2 ## CPC - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings - H10K 59/351: {comprising more than three subpixels, e.g. red-green-blue-white [RGBW]} - H10K 59/87: {Passivation; Containers; Encapsulations} - H10K 59/873: {Encapsulations} - G09G 2300/0426: Layout of electrodes and connections - G09G 2380/02: Flexible displays - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 2102/311: {Flexible OLED} - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display apparatus includes a first substrate having a display area and a non-display area; a pixel array layer provided on the display area of the first substrate; and a second substrate provided on the pixel array layer and having first and second grooves at side edges of the second substrate, wherein the first and second grooves are respectively located at first and second bending areas to facilitate a curvature radius of the end portions of the display and achieve a zero bezel display. ## Claims ### Claim 1 A display apparatus comprising: a first substrate having a display area and a non-display area; a pixel array layer provided on the display area of the first substrate; and a second substrate provided on the pixel array layer and having first and second grooves at side edges of the second substrate, wherein the first and second grooves are respectively located at first and second bending areas and are disposed between a boundary of a non-bending area and the first bending area and an end portion of the second substrate, and wherein each of the first and second bending areas has a width greater than that of the end portion. ### Claim 2 (depends on 1) The display apparatus of claim 1, further comprising a passivation layer covering the first groove and the second groove. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein the passivation layer covers the first bending area including the first groove and the second bending area including the second groove. ### Claim 4 (depends on 2) The display apparatus of claim 2, wherein the passivation layer covers an entire surface of the second substrate including the first and second grooves. ### Claim 5 A display apparatus comprising: a base layer; a first cover layer covering a first end of the base layer and a second cover layer covering a second end of the base layer; a pixel array layer disposed on the base layer extended to the first cover layer and the second cover layer; and a first substrate disposed on the pixel array layer and having a first end adjacent to the first cover layer, a second end adjacent to the second cover layer, the first end having a first groove and the second end having a second groove,. wherein the first and second grooves are disposed between a boundary of a non-bending area and the first bending area and an end portion of the second substrate, and wherein each of the first and second bending areas has a width greater than that of the end portion. ### Claim 6 (depends on 5) The display apparatus of claim 5, wherein the base layer has a first end portion and a second end portion, and the first end portion has a curvature radius that includes the first end of the first substrate and the second end portion having a curvature radius that includes the second end of the first substrate. ### Claim 7 (depends on 5) The display apparatus of claim 5, further comprising a passivation layer covering the first groove and a second passivation layer covering the second groove. ### Claim 8 (depends on 5) The display apparatus of claim 5, wherein the base layer includes a light transmittance layer, a flexible substrate disposed on the light transmittance layer and a buffer layer disposed on the flexible substrate. ### Claim 9 A display apparatus comprising: a first substrate where a display area and a non-display area surrounding the display area are defined; a light transmittance layer attached to the first substrate; a pixel array layer disposed on the first substrate; a second substrate disposed on the pixel array layer and respectively having first and second grooves at first and second end portions of the second substrate, wherein the first and second grooves are respectively located at first and second bending areas; and first and second cover layers disposed on the non-display area of the first substrate and adjoining lateral sides of the second substrate, wherein the first and second grooves are disposed between a boundary of a non-bending area and the first bending area and an end portion of the second substrate, and wherein each of the first and second bending areas has a width greater than that of the end portion. ### Claim 10 (depends on 9) The display apparatus of claim 9, further comprising a passivation layer covering the first groove and the second groove. ### Claim 11 (depends on 10) The display apparatus of claim 10, wherein the passivation layer covers the first bending area including the first groove and the second bending area including the second groove. ### Claim 12 (depends on 10) The display apparatus of claim 10, wherein the passivation layer covers an entire surface of the second substrate including the first and second grooves. ### Claim 13 (depends on 10) The display apparatus of claim 10, wherein the passivation layer includes one or more inorganic films deposited alternately. ### Claim 14 (depends on 10) The display apparatus of claim 10, wherein the passivation layer has a thickness thinner than the second substrate. ### Claim 15 (depends on 9) The display apparatus of claim 9, further comprising a buffer layer disposed between the first substrate and the pixel array layer. ### Claim 16 (depends on 15) The display apparatus of claim 15, wherein the buffer layer includes one or more inorganic films. ### Claim 17 (depends on 9) The display apparatus of claim 9, wherein the pixel array layer includes scan lines, data lines, driving power lines, a pixel driving circuit and a light emitting diode layer. ### Claim 18 (depends on 9) The display apparatus of claim 9, wherein the pixel array layer overlaps with the display area defined in the first substrate. ### Claim 19 (depends on 9) The display apparatus of claim 9, wherein the first and second bending areas overlap with an edge of the display area defined in the first substrate. ### Claim 20 (depends on 9) The display apparatus of claim 9, wherein the light transmittance layer is attached to the first substrate by a transparent adhesive-layer that includes an optically clear resin (OCR) or an optically clear adhesive (OCA).