# US 11,908,875 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 11,908,875 B2 - Document ID: US11908875B2 - Status: Granted - Kind: B2 - Application number: 16/963,262 - Filed: 2020-05-20 - Published: 2023-04-13 - Granted: 2024-02-20 - Earliest claimed: 2020-04-28 - Assignees: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Wei Ren - Web page: https://patentgrep.com/patent/US11908875B2 ## CPC - H10D 86/0212: {comprising manufacture, treatment or coating of substrates} - G02F 1/133345: {Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence)} - G02F 1/1339: Gaskets; Spacers; Sealing of cells - G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)} - G02F 1/13454: {Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence)} - H10D 86/0231: {using masks, e.g. half-tone masks} - H10W 74/137: {the encapsulations being directly on the semiconductor body (H10W74/134 takes precedence)} - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A display panel and a display device are provided. A retaining wall is disposed on a middle position of a driver circuit layer, the retaining wall can prevent an insulating film from overlapping a whole sealing layer in an insulating film coating process, which improves adhesion of the display panel and reliability against high temperature and high humidity, thereby improving quality of the display panel. ## Claims ### Claim 1 A display panel, comprising: a driver circuit layer having a first surface and a second surface disposed opposite to the first surface; a metal layer disposed on the first surface and provided with gaps; an insulating layer disposed on one surface of the metal layer away from the driver circuit layer and embedded into the gaps; a plastic layer disposed on one surface of the insulating layer away from the driver circuit layer; a sealing layer covering a surface of the plastic layer away from the driver circuit layer; a retaining wall extending from the first surface to the sealing layer and disposed on a middle position of the driver circuit layer, wherein the retaining wall is disposed in one of the gaps; and an insulating film disposed between the plastic layer and the sealing layer and on one side of the retaining wall. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the retaining wall is wavy, continuously convex, or jagged. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein a width of the retaining wall ranges from 20 μm to 40 μm. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein the retaining wall is formed by a halftone mask. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein a height of the retaining wall ranges from 1.0 μm to 2.5 μm. ### Claim 6 (depends on 1) The display panel according to claim 1, further comprising a transparent conductive film disposed on one surface of the sealing layer away from the driver circuit layer. ### Claim 7 (depends on 1) The display panel according to claim 1, wherein the driver circuit layer comprises a ring-shaped area and a busline area disposed adjacent, and the retaining wall is disposed in the busline area. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein the plastic layer is a copolymer plastic of heptafluoropropyl trifluorovinyl ether and polytetrafluoroethene. ### Claim 9 (depends on 1) The display panel according to claim 1, wherein the insulating film is a polyimide film. ### Claim 10 A display device comprising a display panel, wherein the display panel comprises: a driver circuit layer having a first surface and a second surface disposed opposite to the first surface; a metal layer disposed on the first surface and provided with gaps; an insulating layer disposed on one surface of the metal layer away from the driver circuit layer and embedded into the gaps; a plastic layer disposed on one surface of the insulating layer away from the driver circuit layer; a sealing layer covering a surface of the plastic layer away from the driver circuit layer; a retaining wall extending from the first surface to the sealing layer and disposed on a middle position of the driver circuit layer, wherein the retaining wall is disposed in one of the gaps; and an insulating film disposed between the plastic layer and the sealing layer and on one side of the retaining wall. ### Claim 11 (depends on 10) The display device according to claim 10, wherein the retaining wall is wavy, continuously convex, or jagged. ### Claim 12 (depends on 10) The display device according to claim 10, wherein a width of the retaining wall ranges from 20 μm to 40 μm. ### Claim 13 (depends on 10) The display device according to claim 10, wherein the retaining wall is formed by a halftone mask. ### Claim 14 (depends on 10) The display device according to claim 10, wherein a height of the retaining wall ranges from 1.0 μm to 2.5 μm. ### Claim 15 (depends on 10) The display device according to claim 10, further comprising a transparent conductive film disposed on one surface of the sealing layer away from the driver circuit layer. ### Claim 16 (depends on 10) The display device according to claim 10, wherein the driver circuit layer comprises a ring-shaped area and a busline area disposed adjacent, and the retaining wall is disposed in the busline area. ### Claim 17 (depends on 10) The display device according to claim 10, wherein the plastic layer is a copolymer plastic of heptafluoropropyl trifluorovinyl ether and polytetrafluoroethene. ### Claim 18 (depends on 10) The display device according to claim 10, wherein the insulating film is a polyimide film.