# US 12,004,415 B2 · Display device including cushion layer and drive chip > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,415 B2 - Document ID: US12004415B2 - Status: Granted - Kind: B2 - Application number: 17/830,003 - Filed: 2022-06-01 - Published: 2022-09-15 - Granted: 2024-06-04 - Earliest claimed: 2019-09-23 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Heechul Jeon - Web page: https://patentgrep.com/patent/US12004415B2 ## CPC - H10K 77/111: {Flexible substrates} - H10K 59/873: {Encapsulations} - H10K 77/00: Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80 - H10W 90/00: Package configurations - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - G02F 1/133331: {Cover glasses} - G06F 1/1641: {the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence)} - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G09G 3/3266: Details of drivers for scan electrodes - G09G 3/3275: Details of drivers for data electrodes - G09G 3/3283: in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - G09G 2300/0408: Integration of the drivers onto the display substrate - G09G 2380/02: Flexible displays - H10K 50/115: comprising active inorganic nanostructures, e.g. luminescent quantum dots - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/13: comprising photosensors that control luminance - H10K 59/88: Dummy elements, i.e. elements having non-functional features - H10K 2102/00: Constructional details relating to the organic devices covered by this subclass - H10K 2102/311: {Flexible OLED} - H10K 2102/351: {Thickness} - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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) - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A display device includes a substrate including a first region, a second region, and a bending region between the first region and the second region, a protective substrate disposed below the substrate in the first region, the second region, and the bending region, a cushion layer disposed below the protective substrate in the first region and the second region, a pixel layer disposed on the substrate in the second region, and a drive chip disposed on the substrate in the first region. The substrate is bent at the bending region such that the first region overlaps the second region. ## Claims ### Claim 1 A display device comprising: a substrate including a first region, a second region, and a first bending region between the first region and the second region; a protective substrate disposed below the substrate and including a second bending region overlapping the first bending region; a cushion layer disposed below the protective substrate in the first region and the second region, the cushion layer including a foam sheet; a pixel layer disposed on the substrate in the second region; and a drive chip disposed on the substrate in the first region, wherein the second bending region is bent with the first bending region. ### Claim 2 (depends on 1) The display device of claim 1, wherein the substrate is bent at the bending region such that the first region is disposed under the second region. ### Claim 3 (depends on 1) The display device of claim 1, wherein the protective substrate comprises a polyimide. ### Claim 4 (depends on 3) The display device of claim 3, wherein the polyimide is colored. ### Claim 5 (depends on 1) The display device of claim 1, further comprising: a first adhesive layer disposed between the substrate and the protective substrate; and a second adhesive layer disposed between the protective substrate and the cushion layer. ### Claim 6 (depends on 5) The display device of claim 5, wherein the cushion layer and the second adhesive layer are disposed at an area excluding the bending region. ### Claim 7 (depends on 1) The display device of claim 1, wherein the second region comprises: a display region; and a non-display region adjacent to the display region, wherein the pixel layer is disposed on the substrate in the display region. ### Claim 8 (depends on 7) The display device of claim 7, further comprising: a thin film encapsulation layer disposed on the substrate in the second region and covering the pixel layer; an input sensing part disposed on the thin film encapsulation layer; and a window disposed on the input sensing part and extending over the bending region. ### Claim 9 (depends on 8) The display device of claim 8, further comprising a protective layer disposed on the substrate in the bending region and extending to the drive chip. ### Claim 10 (depends on 1) The display device of claim 1, wherein the protective substrate has a thickness smaller than the thicknesses of the substrate. ### Claim 11 (depends on 1) The display device of claim 1, wherein the protective substrate has a thickness smaller than the thicknesses of the cushion layer. ### Claim 12 (depends on 1) The display device of claim 1, further comprising wires disposed on the substrate and extending from the pixel layer to the data driver, and a protective layer disposed on the wires in the bending region and extending to the drive chip. ### Claim 13 (depends on 1) The display device of claim 1, wherein the pixel layer includes transistors and light emitting diodes. ### Claim 14 A display device comprising: a substrate including a first region, a second region, and a first bending region between the first region and the second region; a protective substrate disposed below the substrate and including a second bending region overlapping the first bending region; a cushion layer disposed below the protective substrate in the first region and the second region; a pixel layer disposed on the substrate in the second region; and a drive chip disposed on the substrate in the first region, where the second bending region is bent with the first bending region, and the protective substrate has a thickness smaller than a thicknesses of each of the substrate and the cushion layer. ### Claim 15 (depends on 14) The display device of claim 14, wherein the thickness of the protective substrate is in a range of about 5 μm to about 20 μm.