# US 12,111,543 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,111,543 B2 - Document ID: US12111543B2 - Status: Granted - Kind: B2 - Application number: 18/366,099 - Filed: 2023-08-07 - Published: 2024-02-08 - Granted: 2024-10-08 - Earliest claimed: 2022-08-08 - Assignees: Japan Display Inc. - Applicants: Japan Display Inc. - Inventors: Koichi Igeta; Tenfu Nakamura; Kentaro Okuyama - Web page: https://patentgrep.com/patent/US12111543B2 ## CPC - G02F 1/1339: Gaskets; Spacers; Sealing of cells - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G02F 1/133377: {Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel} - G02F 1/1334: based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals - G02F 1/136286: {Wiring, e.g. gate line, drain line} - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions - G09G 2300/0426: Layout of electrodes and connections - G09G 2310/0202: Addressing of scan or signal lines - 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 - 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) ## Abstract According to one embodiment, a display device includes a first substrate, a second substrate opposed to the first substrate, a sealing member bonding the first substrate with the second substrate, and a liquid crystal layer between the first substrate and the second substrate. From an aspect, the sealing member includes a first sealing member surrounding a display area including a plurality of pixels, and a second sealing member formed of a same material as the first sealing member and arranged in the display area. ## Claims ### Claim 1 A display device comprising: a first substrate; a second substrate opposed to the first substrate; a sealing member bonding the first substrate with the second substrate; and a liquid crystal layer between the first substrate and the second substrate, wherein the sealing member includes: a first sealing member surrounding a display area including a plurality of pixels; and a second sealing member formed of a same material as the first sealing member and arranged in the display area, wherein the second substrate includes a light shielding portion including an aperture, the display area includes a first area which does not overlap with the second sealing member in plan view, and a second area which overlaps with the second sealing member in plan view, an aperture ratio of the light shielding portion in the first area is equivalent to an aperture ratio of the light shielding portion in the second area, and the second sealing member overlaps the aperture of the light shielding portion in the second area. ### Claim 2 (depends on 1) The display device of claim 1, wherein the second sealing member overlaps with at least one of the pixels in plan view. ### Claim 3 (depends on 1) The display device of one of claim 1, wherein the pixels are not arranged in an area which overlaps with the second sealing member in plan view. ### Claim 4 (depends on 1) The display device of claim 1, wherein the display area includes a dummy pixel which does not display an image, and the second sealing member overlaps with the dummy pixel. ### Claim 5 (depends on 4) The display device of claim 4, wherein the first substrate comprises: a first pixel electrode arranged in one of the pixels and overlapping with the liquid crystal layer in plan view; a second pixel electrode arranged in the dummy pixel and overlapping with the second sealing member in plan view; a first switching element connected to the first pixel electrode; a second switching element connected to the second pixel electrode; a first scanning line connected to the first switching element; a second scanning line connected to the second switching element; a first signal line connected to the first switching element; and a second signal line connected to the second switching element. ### Claim 6 (depends on 5) The display device of claim 5, further comprising: a gate driver connected to the first scanning line and the second scanning line, wherein the gate driver is configured to apply a voltage in which a low electric potential and a high electric potential are alternately repeated, to the first scanning line, and to apply a constant voltage of the low electric potential to the second scanning line. ### Claim 7 (depends on 5) The display device of claim 5, further comprising: a common electrode to which a common voltage is applied; and a source driver connected to the first signal line and the second signal line, wherein the source driver is configured to apply a display voltage different from the common voltage to the first signal line, and to apply the common voltage to the second signal line. ### Claim 8 (depends on 1) The display device of claim 1, further comprising: a first light source configured to emit light to a first side surface of the first substrate or the second substrate, wherein the liquid crystal layer is constituted by polymer dispersed liquid crystal. ### Claim 9 (depends on 8) The display device of claim 8, further comprising: a second light source configured to emit light to a second side surface of the first substrate or the second substrate. ### Claim 10 (depends on 1) The display device of claim 1, further comprising: a wall portion covering a side surface of the second sealing member. ### Claim 11 (depends on 1) The display device of claim 1, wherein the first substrate and the second substrate are flexible. ### Claim 12 (depends on 1) The display device of claim 1, wherein the light shielding portion overlapping with a side surface of the second sealing member in plan view and extending along the side surface. ### Claim 13 (depends on 1) The display device of claim 1, wherein the second sealing member partitions an inside of the first sealing member into a plurality of areas. ### Claim 14 (depends on 1) The display device of claim 1, wherein the second sealing member includes a plurality of island portions arranged at intervals inside the first sealing member. ### Claim 15 A display device comprising: a first substrate; a second substrate opposed to the first substrate; a sealing member bonding the first substrate with the second substrate; and a liquid crystal layer between the first substrate and the second substrate, wherein the sealing member includes: a first sealing member surrounding a display area including a plurality of pixels; and a second sealing member formed of a same material as the first sealing member and arranged in the display area; and the first substrate further comprises an insulating layer protruding to the liquid crystal layer, the insulating layer is arranged at a portion which does not overlap with the second sealing member in plan view, of a boundary of the pixels, and the insulating layer is not arranged at a portion which overlaps with the second sealing member in plan view, of the boundary of the pixels. ### Claim 16 A display device comprising: a first substrate; a second substrate opposed to the first substrate; a sealing member bonding the first substrate with the second substrate; and a liquid crystal layer between the first substrate and the second substrate, wherein the sealing member includes: a first sealing member surrounding a display area including a plurality of pixels; and a second sealing member formed of a same material as the first sealing member and arranged in the display area; and the first substrate comprises: a first insulating layer protrudes to the liquid crystal layer and arranged at a portion which does not overlap with the second sealing member in plan view, of a boundary of the pixels; and a second insulating layer formed of a same material as the first insulating layer, having a width larger than the first insulating layer, and overlapping with the second sealing member in plan view.