# US 10,770,530 B2 · Organic light emitting display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,530 B2 - Document ID: US10770530B2 - Status: Granted - Kind: B2 - Application number: 16/222,707 - Filed: 2018-12-17 - Published: 2019-06-27 - Granted: 2020-09-08 - Earliest claimed: 2017-12-22 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Jang Jo; Hye-Jin Gong - Web page: https://patentgrep.com/patent/US10770530B2 ## CPC - H10K 59/35: comprising red-green-blue [RGB] subpixels - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/80515: {characterised by their shape} - H10K 59/80517: {Multilayers, e.g. transparent multilayers} - H10K 59/80518: {Reflective anodes, e.g. ITO combined with thick metallic layers} - H10K 59/80521: {characterised by their shape} - H10K 59/878: {comprising reflective means} - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/873: {Encapsulations} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An organic light emitting display device includes a reflective electrode in a pixel region on a substrate and including a concave portion defining a concave furrow, a first filling pattern filling the concave furrow, a first electrode on the first filling pattern and on a portion of the reflective electrode around the first filling pattern, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer. ## Claims ### Claim 1 An organic light emitting display device comprising: a reflective electrode in a pixel region on a substrate, and including a concave portion defining a concave furrow; a first filling pattern filling the concave furrow; a first electrode on the first filling pattern and on a portion of the reflective electrode around the first filling pattern; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; a bank disposed on a boundary of the pixel region; a passivation layer provided below the reflective electrode, the passivation layer including a concave surface on which the concave portion of the reflective electrode is formed; and a second filling pattern filling a drain contact hole of the passivation layer, wherein the bank overlaps with an edge portion of the concave furrow of the reflective electrode, wherein a drain electrode of a thin film transistor in the pixel region and the reflective electrode are electrically connected with each other through the drain contact hole, and wherein the second filling pattern is surrounded by the drain electrode, a portion of the reflective electrode and a portion of the first electrode which contacts the portion of the reflective electrode. ### Claim 2 (depends on 1) The organic light emitting display device of claim 1, wherein a top surface of the first filling pattern has a same height as a top surface of the portion of the reflective electrode around the first filling pattern. ### Claim 3 (depends on 1) The organic light emitting display device of claim 1, wherein the organic light emitting layer emits a white light, and wherein a color filter pattern is on the second electrode. ### Claim 4 (depends on 1) The organic light emitting display device of claim 1, wherein the second electrode is transmissive or semi-transmissive. ### Claim 5 (depends on 1) The organic light emitting display device of claim 1, wherein an interface between the reflective electrode and the first electrode is disposed above an uppermost surface of the passivation layer. ### Claim 6 (depends on 1) The organic light emitting display device of claim 1, wherein an uppermost surface of the first filling pattern in the concave furrow of the reflective electrode has a same height as an uppermost surface of the second filling pattern in the drain contact hole of the passivation layer. ### Claim 7 (depends on 1) The organic light emitting display device of claim 1, wherein an upper surface of the second filling pattern contacts a lower surface of the first electrode. ### Claim 8 (depends on 1) The organic light emitting display device of claim 1, wherein the reflective electrode includes a first layer and a second layer. ### Claim 9 (depends on 8) The organic light emitting display device of claim 8, wherein the first layer of the reflective electrode includes indium tin oxide (ITO) and the second layer of the reflective electrode includes silver (Ag). ### Claim 10 (depends on 8) The organic light emitting display device of claim 8, further comprising a passivation layer disposed below the reflective electrode, the passivation layer including a concave surface on which the concave portion of the reflective electrode is formed, wherein the first layer of the reflective electrode is disposed between the passivation layer and the second layer of the reflective electrode. ### Claim 11 (depends on 1) The organic light emitting display device of claim 1, further comprising a black matrix overlapping with a portion of the first electrode and a portion of the reflective electrode. ### Claim 12 (depends on 1) The organic light emitting display device of claim 1, further comprising an upper passivation layer disposed on the second electrode, wherein a refractive index of the second electrode is greater than a refractive index of the upper passivation layer. ### Claim 13 (depends on 1) The organic light emitting display device of claim 1, wherein the portion of the first electrode is below the bank. ### Claim 14 An organic light emitting display device comprising: a reflective electrode in a pixel region on a substrate, and including a concave portion defining a concave furrow; a first filling pattern filling the concave furrow; a first electrode on the first filling pattern and on a portion of the reflective electrode around the first filling pattern; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; a passivation layer disposed below the reflective electrode, the passivation layer including a concave surface on which the concave portion of the reflective electrode is formed; and a second filling pattern filling a drain contact hole of the passivation layer, wherein a drain electrode of a thin film transistor in the pixel region and the reflective electrode are electrically connected to each other via the drain contact hole, and wherein an uppermost surface of the first filling pattern in the concave furrow of the reflective electrode has a same height as an uppermost surface of the second filling pattern in the drain contact hole of the passivation layer. ### Claim 15 (depends on 14) The organic light emitting display device of claim 14, wherein the reflective electrode includes a first layer and a second layer. ### Claim 16 (depends on 15) The organic light emitting display device of claim 15, wherein the first layer includes indium tin oxide (ITO) and the second layer includes silver (Ag). ### Claim 17 (depends on 14) The organic light emitting display device of claim 14, further comprising a black matrix overlapping with a portion of the first electrode and a portion of the reflective electrode.