# US 12,120,940 B2 · Display panel with optical adjustment member in edge display area and mobile terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,940 B2 - Document ID: US12120940B2 - Status: Granted - Kind: B2 - Application number: 17/600,101 - Filed: 2021-07-20 - Published: 2024-02-08 - Granted: 2024-10-15 - Earliest claimed: 2021-06-24 - Assignees: Wuhan China Star Optoelectronics Technology Co., Ltd.; Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Technology Co., Ltd.; Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Huanhuan Wang - Web page: https://patentgrep.com/patent/US12120940B2 ## CPC - H10K 59/879: {comprising refractive means, e.g. lenses} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Embodiments of the present disclosure provide a display panel and a mobile terminal. The display panel includes an edge display area located on a periphery of a central display area. A substrate, a light-emitting function layer located on the substrate, and an optical adjustment member disposed on the light-emitting function layer are disposed in the edge display area. A refractive index of a side of the optical adjustment member that is close to the light-emitting function layer is less than a refractive index of a side of the optical adjustment member that is away from the light-emitting function layer. ## Claims ### Claim 1 A display panel, comprising a central display area and an edge display area located on a periphery of the central display area, wherein a substrate, a light-emitting function layer located on the substrate, and an optical adjustment member disposed on the light-emitting function layer are disposed in the edge display area, wherein a refractive index of a side of the optical adjustment member that is close to the light-emitting function layer is less than a refractive index of a side of the optical adjustment member that is far away from the light-emitting function layer, wherein a pixel define layer disposed on a same layer as the light-emitting function layer is further disposed in the edge display area, the pixel define layer comprises a plurality of first pixel openings, the light-emitting function layer comprises a plurality of first pixel units, and each of the first pixel units corresponds to each of the first pixel openings; and the optical adjustment member comprises a first optical adjustment layer disposed on a side wall of the first pixel opening and a second optical adjustment layer covering the first optical adjustment layer and the light-emitting function layer, and a refractive index of the first optical adjustment layer is less than a refractive index of the second optical adjustment layer. ### Claim 2 (depends on 1) The display panel as claimed in claim 1, wherein the first optical adjustment layer comprises a flat portion disposed on the pixel define layer and an inclined portion disposed on the side wall of the first pixel opening and connected to the flat portion, and a slope angle of the inclined portion is greater than or equal to a slope angle of the side wall of the first pixel opening. ### Claim 3 (depends on 1) The display panel as claimed in claim 1, wherein the refractive index of the second optical adjustment layer gradually increases in a light-transmitting direction of the display panel. ### Claim 4 (depends on 1) The display panel as claimed in claim 1, wherein the refractive index of the second optical adjustment layer gradually increases from a central position to an edge position of the second optical adjustment layer. ### Claim 5 (depends on 1) The display panel as claimed in claim 1, further comprising a reflecting layer disposed on the side wall of the first pixel opening, and the reflecting layer is located between the pixel define layer and the first optical adjustment layer. ### Claim 6 (depends on 1) The display panel as claimed in claim 1, wherein a part of the pixel define layer that is located in the central display area further comprises a plurality of second pixel openings, the light-emitting function layer further comprises a plurality of second pixel units, and one second pixel unit corresponds to one second pixel opening, wherein the second pixel opening further comprises the light-emitting function layer and the second optical adjustment layer disposed on the light-emitting function layer. ### Claim 7 (depends on 6) The display panel as claimed in claim 6, wherein a spacing between two adjacent second pixel openings is less than a spacing between two adjacent first pixel openings. ### Claim 8 (depends on 1) The display panel as claimed in claim 1, wherein a material of the optical adjustment member comprises at least one of a photoresist and a metal oxide. ### Claim 9 (depends on 1) The display panel as claimed in claim 1, further comprising: an array structure layer, located on the substrate; a thin film encapsulation layer, located on the light-emitting function layer; a touch layer, located on the thin film encapsulation layer; a polarizing layer, located on the touch layer; and a cover plate layer, wherein the light-emitting function layer is located on the array structure layer, and the optical adjustment member is located between the light-emitting function layer and the thin film encapsulation layer. ### Claim 10 A mobile terminal, comprising a terminal body and a display panel that are combined as a whole, wherein the display panel comprises a central display area and an edge display area located on a periphery of the central display area, and a substrate, a light-emitting function layer located on the substrate, and an optical adjustment member disposed on the light-emitting function layer are disposed in the edge display area, wherein a refractive index of a side of the optical adjustment member that is close to the light-emitting function layer is less than a refractive index of a side of the optical adjustment member that is far away from the light-emitting function layer, wherein a pixel define layer disposed on a same layer as the light-emitting function layer is further disposed in the edge display area, the pixel define layer comprises a plurality of first pixel openings, the light-emitting function layer comprises a plurality of first pixel units, and each of the first pixel units corresponds to each of the first pixel openings; and the optical adjustment member comprises a first optical adjustment layer disposed on a side wall of the first pixel opening and a second optical adjustment layer covering the first optical adjustment layer and the light-emitting function layer, and a refractive index of the first optical adjustment layer is less than a refractive index of the second optical adjustment layer. ### Claim 11 (depends on 10) The mobile terminal as claimed in claim 10, wherein the first optical adjustment layer comprises a flat portion disposed on the pixel define layer and an inclined portion disposed on the side wall of the first pixel opening and connected to the flat portion, and a slope angle of the inclined portion is greater than or equal to a slope angle of the side wall of the first pixel opening. ### Claim 12 (depends on 10) The mobile terminal as claimed in claim 10, wherein the refractive index of the second optical adjustment layer gradually increases in a light-transmitting direction of the display panel. ### Claim 13 (depends on 10) The display panel as claimed in claim 10, wherein the refractive index of the second optical adjustment layer gradually increases from a central position to an edge position of the second optical adjustment layer. ### Claim 14 (depends on 10) The mobile terminal as claimed in claim 10, wherein the display panel further comprises a reflecting layer disposed on the side wall of the first pixel opening, and the reflecting layer is located between the pixel define layer and the first optical adjustment layer. ### Claim 15 (depends on 10) The mobile terminal as claimed in claim 10, wherein a part of the pixel define layer that is located in the central display area further comprises a plurality of second pixel openings, the light-emitting function layer further comprises a plurality of second pixel units, and one second pixel unit corresponds to one second pixel opening, wherein the second pixel opening further comprises the light-emitting function layer and the second optical adjustment layer disposed on the light-emitting function layer. ### Claim 16 (depends on 15) The mobile terminal as claimed in claim 15, wherein a spacing between two adjacent second pixel openings is less than a spacing between two adjacent first pixel openings. ### Claim 17 (depends on 10) The mobile terminal as claimed in claim 10, wherein a material of the optical adjustment member comprises at least one of a photoresist and a metal oxide. ### Claim 18 (depends on 10) The mobile terminal as claimed in claim 10, wherein the display panel further comprises: an array structure layer, located on the substrate; a thin film encapsulation layer, located on the light-emitting function layer; a touch layer, located on the thin film encapsulation layer; a polarizing layer, located on the touch layer; and a cover plate layer, wherein the light-emitting function layer is located on the array structure layer, and the optical adjustment member is located between the light-emitting function layer and the thin film encapsulation layer.