# US 12,193,308 B2 · Display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,193,308 B2 - Document ID: US12193308B2 - Status: Granted - Kind: B2 - Application number: 17/598,265 - Filed: 2021-08-06 - Published: 2024-02-15 - Granted: 2025-01-07 - Earliest claimed: 2021-08-02 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Ping He - Web page: https://patentgrep.com/patent/US12193308B2 ## CPC - H10K 59/872: {Containers} - H10K 59/871: {Self-supporting sealing arrangements} - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Disclosed are a display panel and a display device. The display panel comprises a first curved area located between two second curved areas and corresponding to a corner of a plane area. The display panel comprises a support layer and a panel main body, and the support layer comprises a curved first part located in the first curved area and a curved second part located in the second curved area; the panel main body is located on the support layer and curved with the first part and the second part. An elastic modulus of the first part is smaller than an elastic modulus of the second part. ## Claims ### Claim 1 A display panel, comprising a plane area, a first curved area and two second curved areas, wherein the plane area comprises a first side and a second side adjacent to the first side, and the two second curved areas are respectively connected to the first side and the second side, and the first curved area is located between the two second curved areas and corresponds to a corner of the plane area; the display panel comprises: a support layer, comprising a curved first part located in the first curved area and a curved second part located in the second curved area; and a panel main body, located on the support layer and curved along with the first part and the second part; wherein an elastic modulus of the first part is smaller than an elastic modulus of the second part; wherein the display panel further comprises a transition area located between the first curved area and the second curved area, and the support layer comprises a curved third part located in the transition area; wherein an elastic modulus of the third part is greater than the elastic modulus of the first part and is smaller than the elastic modulus of the second part; and wherein the first part comprises a first base material, the second part comprises a second base material, and the third part comprises a mixture of the first base material and the second base material; wherein an elastic modulus of the first base material is less than an elastic modulus of the second base material. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein in a direction from the first curved area to the second curved area, the elastic modulus of the third part gradually increases. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein in a direction from the first curved area to the second curved area, a proportion of the second base material gradually increases. ### Claim 4 (depends on 3) The display panel according to claim 3, wherein the first base material comprises polydimethylsiloxane or thermoplastic elastomer, the second base material comprises polyimide or polyethylene terephthalate. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein the elastic modulus of the first part is greater than or equal to 1 MPa and less than or equal to 20 MPa, and the elastic modulus of the second part is greater than or equal to 1 GPa and less than or equal to 10 GPa. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein the support layer further comprises a fourth part located in the plane area, and the elastic modulus of the second part is less than or equal to an elastic modulus of the fourth part. ### Claim 7 (depends on 6) The display panel according to claim 6, wherein the display panel further comprises a plane transition area between the first curved area and the plane area, and the support layer further comprises a fifth part located in the plane transition area; wherein an elastic modulus of the fifth part is smaller than the elastic modulus of the fourth part, and is greater than the elastic modulus of the first part. ### Claim 8 (depends on 7) The display panel according to claim 7, wherein the elastic modulus of the fifth part is equal to the elastic modulus of the third part. ### Claim 9 (depends on 7) The display panel according to claim 7, wherein in a direction from the first curved area to the plane area, the elastic modulus of the fifth part gradually increases. ### Claim 10 (depends on 1) The display panel according to claim 1, wherein the panel main body comprises a substrate, a driving array layer and a light emitting device; the substrate is located on the support layer, the driving array layer is located on the substrate, and the light emitting device is located on the driving array layer. ### Claim 11 (depends on 10) The display panel according to claim 10, wherein the light emitting device comprises an organic light emitting diode, a mini light emitting diode or a micro light emitting diode. ### Claim 12 A display device, comprising a display panel, wherein the display panel comprises a plane area, a first curved area and two second curved areas, wherein the plane area comprises a first side and a second side adjacent to the first side, and the two second curved areas are respectively connected to the first side and the second side, and the first curved area is located between the two second curved areas and corresponds to a corner of the plane area; the display panel comprises: a support layer, comprising a curved first part located in the first curved area and a curved second part located in the second curved area; and a panel main body, located on the support layer and curved along with the first part and the second part; wherein an elastic modulus of the first part is smaller than an elastic modulus of the second part; wherein the display panel further comprises a transition area located between the first curved area and the second curved area, and the support layer comprises a curved third part located in the transition area; wherein an elastic modulus of the third part is greater than the elastic modulus of the first part and is smaller than the elastic modulus of the second part; and wherein the first part comprises a first base material, the second part comprises a second base material, and the third part comprises a mixture of the first base material and the second base material; wherein an elastic modulus of the first base material is less than an elastic modulus of the second base material. ### Claim 13 (depends on 12) The display device according to claim 12, wherein in a direction from the first curved area to the second curved area, the elastic modulus of the third part gradually increases. ### Claim 14 (depends on 12) The display device according to claim 12, wherein in a direction from the first curved area to the second curved area, a proportion of the second base material gradually increases.