# US 11,910,632 B2 · Organic light-emitting diode display device and display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,632 B2 - Document ID: US11910632B2 - Status: Granted - Kind: B2 - Application number: 17/055,619 - Filed: 2020-06-30 - Published: 2022-06-16 - Granted: 2024-02-20 - Earliest claimed: 2020-06-17 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Shengfang Liu; Weiwei Li - Web page: https://patentgrep.com/patent/US11910632B2 ## CPC - H10K 50/19: Tandem OLEDs - H10K 50/11: characterised by the electroluminescent [EL] layers - H10K 59/35: comprising red-green-blue [RGB] subpixels - H10K 2101/10: Triplet emission - H10K 2101/30: Highest occupied molecular orbital [HOMO], lowest unoccupied molecular orbital [LUMO] or Fermi energy values - H10K 2101/40: Interrelation of parameters between multiple constituent active layers or sublayers, e.g. HOMO values in adjacent layers - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An organic light-emitting diode display device is provided, including an anode layer, a cathode layer, a first light-emitting layer, and a second light-emitting layer disposed between the anode layer and the cathode layer, wherein the first light-emitting layer comprises a first light-emitting part, a second light-emitting part, and a third light-emitting part arranged side-by-side, the second light-emitting layer is configured to emit light of a same color as light emitted from the first light-emitting part, and the organic light-emitting diode display device further includes a charge generating layer disposed between the second light-emitting layer and the first light-emitting part. ## Claims ### Claim 1 An organic light-emitting diode display device, comprising an anode layer, a cathode layer, and a first light-emitting layer and a second light-emitting layer disposed between the anode layer and the cathode layer, wherein the first light-emitting layer comprises a first light-emitting part, a second light-emitting part, and a third light-emitting part arranged side-by-side, the second light-emitting layer is configured to emit light of a same color as light emitted from the first light-emitting part, and the organic light-emitting diode display device further comprises a charge generating layer disposed between the second light-emitting layer and the first light-emitting part, and no charge generating layer is disposed between the second light-emitting layer and the second light-emitting part as well as between the second light-emitting layer and the third light-emitting part. ### Claim 2 (depends on 1) The organic light-emitting diode display device of claim 1, wherein the charge generating layer comprises a first charge generating layer and a second charge generating layer disposed in a stack, the first charge generating layer is disposed close to a side of the anode layer, the second charge generating layer is disposed close to a side of the cathode layer, a material of the first charge generating layer comprises a P-type doped hole transport material, and a material of the second charge generating layer comprises an N-type doped electron transport material. ### Claim 3 (depends on 1) The organic light-emitting diode display device of claim 1, wherein an orthogonal projection of the first light-emitting part projected on the charge generating layer covers the charge generating layer. ### Claim 4 (depends on 1) The organic light-emitting diode display device of claim 1, wherein the second light-emitting layer is disposed between the cathode layer and the first light-emitting layer, and a highest occupied molecular orbital energy level of the second light-emitting layer is less than a highest occupied molecular orbital energy level of the first light-emitting part. ### Claim 5 (depends on 4) The organic light-emitting diode display device of claim 4, wherein a material of the second light-emitting layer comprises an electron-transmission type light-emitting material, and a material of the first light-emitting part comprises a hole-transmission type light-emitting material. ### Claim 6 (depends on 1) The organic light-emitting diode display device of claim 1, wherein the second light-emitting layer is disposed between the anode layer and the first light-emitting layer, and a highest occupied molecular orbital energy level of the second light-emitting layer is greater than a highest occupied molecular orbital energy level of the first light-emitting part. ### Claim 7 (depends on 6) The organic light-emitting diode display device of claim 6, wherein a material of the second light-emitting layer comprises a hole-transmission type light-emitting material, and a material of the first light-emitting part comprises an electron-transmission type light-emitting material. ### Claim 8 (depends on 1) The organic light-emitting diode display device of claim 1, wherein a first triplet excited state energy level of the second light-emitting layer is greater than a first triplet excited state energy level of the second light-emitting part and a first triplet excited state energy level of the third light-emitting part. ### Claim 9 (depends on 1) The organic light-emitting diode display device of claim 1, wherein the organic light-emitting diode display device comprises a hole injection layer and a hole transport layer disposed between the anode layer and the first light-emitting layer, and an electron transport layer disposed between the cathode layer and the first light-emitting layer. ### Claim 10 A display panel, comprising an organic light-emitting diode display device, comprising an anode layer, a cathode layer, and a first light-emitting layer and a second light-emitting layer disposed between the anode layer and the cathode layer, wherein the first light-emitting layer comprises a first light-emitting part, a second light-emitting part, and a third light-emitting part arranged side-by-side, the second light-emitting layer is configured to emit light of a same color as light emitted from the first light-emitting part, and the organic light-emitting diode display device further comprises a charge generating layer disposed between the second light-emitting layer and the first light-emitting part, and no charge generating layer is disposed between the second light-emitting layer and the second light-emitting part as well as between the second light-emitting layer and the third light-emitting part. ### Claim 11 (depends on 10) The display panel of claim 10, wherein the charge generating layer comprises a first charge generating layer and a second charge generating layer disposed in a stack, the first charge generating layer is disposed close to a side of the anode layer, the second charge generating layer is disposed close to a side of the cathode layer, a material of the first charge generating layer comprises a P-type doped hole transport material, and a material of the second charge generating layer comprises an N-type doped electron transport material. ### Claim 12 (depends on 10) The display panel of claim 10, wherein an orthogonal projection of the first light-emitting part projected on the charge generating layer covers the charge generating layer. ### Claim 13 (depends on 10) The display panel of claim 10, wherein the second light-emitting layer is disposed between the cathode layer and the first light-emitting layer, and a highest occupied molecular orbital energy level of the second light-emitting layer is less than a highest occupied molecular orbital energy level of the first light-emitting part. ### Claim 14 (depends on 13) The display panel of claim 13, wherein a material of the second light-emitting layer comprises an electron-biased type light-emitting material, and a material of the first light-emitting part comprises a hole-transmission type light-emitting material. ### Claim 15 (depends on 10) The display panel of claim 10, wherein the second light-emitting layer is disposed between the anode layer and the first light-emitting layer, and a highest occupied molecular orbital energy level of the second light-emitting layer is greater than a highest occupied molecular orbital energy level of the first light-emitting part. ### Claim 16 (depends on 15) The display panel of claim 15, wherein a material of the second light-emitting layer comprises a hole-transmission type light-emitting material, and a material of the first light-emitting part comprises an electron-transmission type light-emitting material. ### Claim 17 (depends on 10) The display panel of claim 10, wherein a first triplet excited state energy level of the second light-emitting layer is greater than a first triplet excited state energy level of the second light-emitting part and the first triplet excited state energy level of the third light-emitting part. ### Claim 18 (depends on 10) The display panel of claim 10, wherein the organic light-emitting display device comprises a hole injection layer, a hole transport layer disposed between the anode layer and the first light-emitting layer, and an electron transport layer disposed between the cathode layer and the first light-emitting layer. ### Claim 19 (depends on 1) The organic light-emitting diode display device of claim 1, wherein the second light-emitting layer is configured to be planar. ### Claim 20 (depends on 10) The display panel of claim 10, wherein the second light-emitting layer is configured to be planar.