# US 2021/0242423 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242423 A1 - Document ID: US20210242423A1 - Status: Published application - Kind: A1 - Application number: 17/165,855 - Filed: 2021-02-02 - Published: 2021-08-05 - Earliest claimed: 2020-02-03 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Hyeon Bum LEE - Web page: https://patentgrep.com/patent/US20210242423A1 ## CPC - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 50/844: Encapsulations - H10K 50/865: {comprising light absorbing layers, e.g. light-blocking layers} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/873: {Encapsulations} - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/40: OLEDs integrated with touch screens - H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device includes a first layer having a display area including pixels and a non-display area surrounding the display area; a second layer disposed on the first layer and including an intermediate inorganic film and an intermediate organic film; a third layer disposed on the second layer and including display elements; a first dam structure disposed outside an edge of the intermediate organic film and extending along the edge of the intermediate organic film; a fourth layer including first and second encapsulation inorganic films; a fifth layer in disposed on the fourth layer; a sixth layer disposed on the fifth layer and including a light blocking layer, a plurality of color filters, and a seventh layer covering the light blocking layer and the plurality of color filters; and a second dam structure disposed on the non-display area and defining a boundary of the seventh layer. ## Claims ### Claim 1 A display device comprising: a first layer having a display area including pixels and a non-display area surrounding the display area; a second layer disposed on the first layer and including an intermediate inorganic film and an intermediate organic film, the intermediate inorganic film overlapping the display area and the non-display area, the intermediate organic film disposed on the intermediate inorganic film and exposing a portion of the intermediate inorganic film in the non-display area; a third layer disposed on the second layer and including display elements in the display area; a first dam structure disposed outside an edge of the intermediate organic film and extending along the edge of the intermediate organic film; a fourth layer including a first encapsulation inorganic film and a second encapsulation inorganic film overlapping the third layer and the first dam structure, respectively, and an encapsulation organic film interposed between the first encapsulation inorganic film and the second encapsulation inorganic film and having an end portion adjacent to a side of the first dam structure; a fifth layer in disposed on the fourth layer; a sixth layer disposed on the fifth layer and including a light blocking layer, a plurality of color filters, and a seventh layer covering the light blocking layer and the plurality of color filters; and a second dam structure disposed on the non-display area and defining a boundary of the seventh layer, wherein the second dam structure is formed of the same material as at least one of the light blocking layer and the plurality of color filters. ### Claim 2 (depends on 1) The display device of claim 1, wherein the second layer is a circuit element layer and comprises signal lines electrically connected to the display elements, and signal pads connected to ends of the signal lines, and the non-display area has a pad area in which the signal pads are disposed. ### Claim 3 (depends on 2) The display device of claim 2, wherein a portion of the first dam structure and a portion of the second dam structure are disposed substantially in parallel with the pad area. ### Claim 4 (depends on 2) The display device of claim 2, wherein the second dam structure is disposed between the display area and the pad area. ### Claim 5 (depends on 4) The display device of claim 4, wherein the first dam structure comprises a first dam portion and the second dam structure comprises a second dam portion overlapping the first dam portion. ### Claim 6 (depends on 1) The display device of claim 1, wherein each pixel comprises: a first sub pixel to emit a first color light; a second sub pixel to emit a second color light; and a third sub pixel to emit a third color light, and wherein the color filters comprise: a first color filter overlapping the first sub pixel; a second color filter overlapping the second sub pixel; and a third color filter overlapping the third sub pixel. ### Claim 7 (depends on 6) The display device of claim 6, wherein the second dam structure comprises an eighth layer, a ninth layer, a tenth layer and an eleventh layer, and wherein: the eighth layer is simultaneously formed of the same material as the light blocking layer, the ninth layer is simultaneously formed of the same material as the first color filter, the tenth layer is simultaneously formed of the same material as the second color filter, and the eleventh layer is formed of the same material as the third color filter. ### Claim 8 (depends on 7) The display device of claim 7, wherein the first color filter is a green color filter, the second color filter is a blue color filter, and the third color filter is a red color filter. ### Claim 9 (depends on 1) The display device of claim 1, wherein the seventh layer is an overcoat layer further comprising a scatterer formed of at least one selected from TiO2, Al2O3, and SiO2. ### Claim 10 (depends on 1) The display device of claim 1, wherein the third layer comprises a display element layer further comprising a pixel definition film having an opening defining an emission area. ### Claim 11 (depends on 10) The display device of claim 10, further comprising: a spacer projecting in a thickness direction from the pixel definition film, wherein the first dam structure comprises an eighth layer and a ninth layer, the eighth layer simultaneously formed of the same material as the pixel definition film, the ninth layer simultaneously formed of the same material as the spacer. ### Claim 12 (depends on 10) The display device of claim 10, wherein the light blocking layer overlaps the pixel definition film in a thickness direction. ### Claim 13 (depends on 10) The display device of claim 10, wherein the light blocking layer has a first width between its ends in one direction, the pixel definition film has a second width between its ends in the one direction, and the first width is less than the second width. ### Claim 14 (depends on 10) The display device of claim 10, wherein the pixel definition film comprises alight absorbing material, and the light absorbing material comprises at least one selected from a carbon-based black pigment, chromium (Cr), molybdenum (Mo), an alloy of molybdenum and titanium (MoTi), tungsten (W), vanadium (V), niobium (Nb), tantalum (Ta), manganese (Mn), cobalt (Co), and nickel (Ni). ### Claim 15 (depends on 1) The display device of claim 1, wherein the intermediate organic film comprises a first intermediate organic film disposed on the intermediate inorganic film, and a second intermediate organic film disposed on the first intermediate organic film. ### Claim 16 (depends on 1) The display device of claim 1, wherein the non-display area comprises a first non-bendable area, a second non-bendable area spaced apart from the first non-bendable area in a first direction, and a bendable area defined between the first non-bendable area and the second non-bendable area, and wherein the bendable area is bent such that a bending axis is defined along a second direction orthogonal to the first direction. ### Claim 17 (depends on 16) The display device of claim 16, wherein the intermediate inorganic film has a groove that exposes a portion of the non-display area of the first layer, and a dummy organic pattern is disposed inside the groove. ### Claim 18 (depends on 16) The display device of claim 16, wherein the second layer is a circuit element layer and comprises signal lines electrically connected to the display elements, and signal pads connected to ends of the signal lines, and the second non-bendable area comprises a pad area in which the signal pads are disposed. ### Claim 19 (depends on 18) The display device of claim 18, wherein the second dam structure is disposed in the first non-bendable area. ### Claim 20 (depends on 19) The display device of claim 19, wherein the second dam structure comprises a first dam portion and the second dam structure comprises a second dam portion overlapping the first dam portion.