# US 11,309,355 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 11,309,355 B2 - Document ID: US11309355B2 - Status: Granted - Kind: B2 - Application number: 16/395,272 - Filed: 2019-04-26 - Published: 2020-10-29 - Granted: 2022-04-19 - Earliest claimed: 2019-04-26 - Assignees: Innolux Corporation - Applicants: InnoLux Corporation - Inventors: Hsiao-Lang Lin; Tsung-Han Tsai - Web page: https://patentgrep.com/patent/US11309355B2 ## CPC - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 50/11: characterised by the electroluminescent [EL] layers - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/126: Shielding, e.g. light-blocking means over the TFTs - H10K 59/35: comprising red-green-blue [RGB] subpixels - H10K 59/80522: {combined with auxiliary electrodes} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - H10K 59/1315: {comprising structures specially adapted for lowering the resistance} - H10K 2102/3026: {Top emission} - H10K 2102/351: {Thickness} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract The present disclosure provides a display device including a cathode electrode, a first anode electrode, a second anode electrode, a first light emitting layer, a first light conversion layer, a second light emitting layer, a second light conversion layer and an auxiliary electrode. The first light emitting layer is disposed between the cathode electrode and the first anode electrode. The first light conversion layer is disposed above the first light emitting layer. The second light emitting layer is disposed between the cathode electrode and the second anode electrode. The second light conversion layer is disposed above the second light emitting layer. The auxiliary electrode is electrically connected to the cathode electrode, and a portion of the auxiliary electrode is between the first light conversion layer and the second light conversion layer in a top view direction of the display device. ## Claims ### Claim 1 A display device having a display region and a peripheral region, comprising: a cathode electrode; a first anode electrode and a second anode electrode; a first light emitting layer disposed between the cathode electrode and the first anode electrode; a first light conversion layer disposed above the first light emitting layer; a second light emitting layer disposed between the cathode electrode and the second anode electrode; a second light conversion layer disposed above the second light emitting layer; an auxiliary electrode electrically connected to the cathode electrode; a peripheral pad disposed in the peripheral region; and a peripheral wire disposed in the peripheral region; wherein a portion of the auxiliary electrode is between the first light conversion layer and the second light conversion layer in a top view direction of the display device; wherein the peripheral pad is electrically connected with the peripheral wire and the auxiliary electrode, and the peripheral pad is electrically connected with the auxiliary electrode through a plurality of connection regions. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the first light conversion layer is surrounded by the auxiliary electrode in the top view direction of the display device. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the auxiliary electrode is in one of dot shape, line shape and mesh shape. ### Claim 4 (depends on 1) The display device according to claim 1, wherein a minimum distance between the auxiliary electrode and the first light conversion layer in the top view direction of the display device is greater than or equal to 0.5 μm and less than or equal to 10 μm. ### Claim 5 (depends on 1) The display device according to claim 1, wherein the auxiliary electrode is formed after the first light conversion layer and the second light conversion layer. ### Claim 6 (depends on 1) The display device according to claim 1, further comprising a light shielding layer disposed between the first light conversion layer and the second light conversion layer in the top view direction of the display device, wherein a ratio of a minimum distance between an outline of a projected area of the light shielding layer on a substrate and an outline of a projected area of the auxiliary electrode on the substrate in the top view direction of the display device to a width of the auxiliary electrode is greater than or equal to 0.06 and less than or equal to 1.4. ### Claim 7 (depends on 1) The display device according to claim 1, further comprising: a protecting layer disposed between the cathode electrode and the auxiliary electrode; and a conductive via passing through the protecting layer and electrically connected with the auxiliary electrode and the cathode electrode. ### Claim 8 (depends on 1) The display device according to claim 1, wherein a side surface of the auxiliary electrode is in contact with the first light emitting layer. ### Claim 9 (depends on 1) The display device according to claim 1, further comprising: an opposite substrate disposed on the first light emitting layer and the second light emitting layer; and a protrusion structure disposed between the opposite substrate and the auxiliary electrode. ### Claim 10 (depends on 1) The display device according to claim 1, further comprising: a substrate, wherein the first light emitting layer and the second light emitting layer are disposed on the substrate; a pixel defining layer disposed on the substrate and disposed between the first light emitting layer and the second light emitting layer; and a conductive via passing through the pixel defining layer and electrically connected with the auxiliary electrode. ### Claim 11 (depends on 10) The display device according to claim 10, further comprising a common electrode disposed between the pixel defining layer and the substrate, wherein the conductive via is electrically connected with the auxiliary electrode and the common electrode. ### Claim 12 (depends on 11) The display device according to claim 11, further comprising a circuit layer structure, and the common electrode is formed of a conductive layer in the circuit layer structure. ### Claim 13 (depends on 1) The display device according to claim 1, wherein a thickness of the auxiliary electrode is greater than a thickness of the cathode electrode. ### Claim 14 (depends on 1) The display device according to claim 1, wherein the auxiliary electrode is a conductive elastomer. ### Claim 15 (depends on 1) The display device according to claim 1, wherein the auxiliary electrode has a first auxiliary part and a second auxiliary part, and the cathode electrode is disposed between the first auxiliary part and the second auxiliary part. ### Claim 16 (depends on 1) The display device according to claim 1, wherein the auxiliary electrode is disposed between the cathode electrode and the first light emitting layer. ### Claim 17 (depends on 1) The display device according to claim 1, wherein a width of the auxiliary electrode is greater as a distance between the auxiliary electrode and the peripheral pad is increased. ### Claim 18 A display device having a display region and a peripheral region, comprising: a first light emitting unit; a second light emitting unit disposed adjacent to the first light emitting unit; an auxiliary electrode electrically connected to the first light emitting unit and the second light emitting unit; a peripheral pad disposed in the peripheral region; and a peripheral wire disposed in the peripheral region; wherein a portion of the auxiliary electrode is disposed between the first light emitting unit and the second light emitting unit in a top view direction of the display device; wherein the peripheral pad is electrically connected with the peripheral wire and the auxiliary electrode, and the peripheral pad is electrically connected with the auxiliary electrode through a plurality of connection regions. ### Claim 19 (depends on 18) The display device according to claim 18, wherein the auxiliary electrode is in one of dot shape, line shape and mesh shape. ### Claim 20 (depends on 18) The display device according to claim 18, further comprising a light shielding layer disposed between the first light emitting unit and the second light emitting unit in the top view direction of the display device, wherein a minimum distance between an outline of the light shielding layer projected on the substrate and an outline of the auxiliary electrode projected on the substrate in the top view direction of the display device is greater than or equal to 0.5 μm and less than or equal to 10 μm.