# US 2021/0242426 A1 · 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 2021/0242426 A1 - Document ID: US20210242426A1 - Status: Published application - Kind: A1 - Application number: 17/236,281 - Filed: 2021-04-21 - Published: 2021-08-05 - Earliest claimed: 2020-12-30 - Assignees: Shanghai Tianma Am-Oled Co., Ltd. - Applicants: Shanghai Tianma AM-OLED Co., Ltd. - Inventors: Lin CHENG; Peng Zhang; Xinzhao Liu - Web page: https://patentgrep.com/patent/US20210242426A1 ## CPC - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/873: {Encapsulations} - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - H10K 77/111: {Flexible substrates} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Provided are a display panel and a display device. The display panel includes a display area, a non-display area and a polarizer. The non-display area includes a fan-out area and a bonding area arranged in a direction facing away from the display area. The fan-out area includes a first section and a second section. The second section is a bending area. The first section, the second section and the bonding area are arranged in a first direction. A side of the polarizer facing towards the fan-out area is provided with multiple first openings. The bending area and the bonding area are covered with a protective glue which further extends to an edge of the polarizer in the first section. ## Claims ### Claim 1 A display panel, comprising: a display area and a non-display area, wherein the non-display area comprises a fan-out area and a bonding area arranged in a direction facing away from the display area; the fan-out area comprises a first section and a second section; the second section is a bending area; and the first section, the second section and the bonding area are arranged in a first direction; and a polarizer, wherein a side of the polarizer facing towards the fan-out area is provided with a plurality of first openings; and the bending area and the bonding area are covered with a protective glue which extends to an edge of the polarizer in the first section. ### Claim 2 (depends on 1) The display panel of claim 1, wherein along the first direction, a longest length of the first opening is d1, and a distance between an edge where no first opening is provided on the side of the polarizer facing towards the fan-out area and a boundary between the first section and the second section is d2, wherein d1+d2D, and D is a climbing length of the protective glue. ### Claim 3 (depends on 1) The display panel of claim 1, further comprising a baffle wall structure located in the non-display area, wherein the baffle wall structure is disposed around the display area; and an edge of each of the plurality of first openings is located on a side of the baffle wall structure facing away from the display area. ### Claim 4 (depends on 1) The display panel of claim 1, further comprising: a substrate; a pixel circuit layer, an organic planarization layer, a light emitting element layer and an encapsulation layer sequentially located on the substrate, wherein the polarizer is located on a side of the encapsulation layer facing away from the substrate; and the organic planarization layer is provided with a second opening in the first section of the fan-out area; and a baffle wall structure, wherein the baffle wall structure is located between the encapsulation layer and the pixel circuit layer, and the baffle wall structure is located in the second opening, wherein an edge of each of the plurality of first openings is located on a side of the second opening facing away from the display area. ### Claim 5 (depends on 1) The display panel of claim 1, wherein at least part of the plurality of first openings each comprises a first opening sub-section and a second opening sub-section; the second opening sub-section is communicated with the first opening sub-section; the second opening sub-section is located on a side of the first opening sub-section facing towards the display area; and in a direction parallel to the display panel and perpendicular to the first direction, a length of the first opening sub-section is larger than a length of the second opening sub-section. ### Claim 6 (depends on 5) The display panel of claim 5, wherein at least one of the first opening sub-section or the second opening sub-section is rectangular or trapezoid. ### Claim 7 (depends on 5) The display panel of claim 5, further comprising: a substrate; a pixel circuit layer, an organic planarization layer, a light emitting element layer and an encapsulation layer sequentially located on the substrate, wherein the polarizer is located on a side of the encapsulation layer facing away from the substrate; and the organic planarization layer is provided with a second opening in the first section of the fan-out area; and a baffle wall structure, wherein the baffle wall structure is located between the encapsulation layer and the pixel circuit layer, and the baffle wall structure is located in the second opening, wherein an edge of the first opening sub-section is located at a side of the second opening facing away from the display area; and an edge of the second opening sub-section is located on a side of the baffle wall structure facing away from the display area. ### Claim 8 (depends on 7) The display panel of claim 7, wherein the first section is further provided with a plurality of signal lines; and a vertical projection of each of the plurality of signal lines on the polarizer does not overlap the second opening sub-section. ### Claim 9 (depends on 8) The display panel of claim 8, wherein the plurality of signal lines comprise a plurality of display signal lines and a plurality of test signal lines; a vertical projection of each of the plurality of display signal lines on the polarizer overlaps an area of the polarizer where no first opening is provided; and a vertical projection of each of the plurality of test signal lines on the polarizer overlaps a corresponding first opening sub-section. ### Claim 10 (depends on 8) The display panel of claim 8, wherein each first opening sub-section correspondingly communicates with a plurality of second opening sub-sections; the plurality of second opening sub-sections corresponding to the each first opening sub-section are arranged in a direction perpendicular to the first direction. ### Claim 11 (depends on 1) The display panel of claim 1, wherein the first section is further provided with a plurality of signal lines; and a vertical projection of each of the plurality of signal lines on the polarizer does not overlap the plurality of first openings. ### Claim 12 (depends on 8) The display panel of claim 8, wherein the plurality of signal lines at the edge of the polarizer are parallel to the first direction. ### Claim 13 (depends on 1) The display panel of claim 1, further comprising a substrate, wherein the substrate comprises a buffer base material layer, a lower adhesive film, and a flexible base material layer which are sequentially laminated; the lower adhesive film is provided with a third opening in the bending area; and the flexible base material layer is located on a side of the lower adhesive film facing towards the polarizer. ### Claim 14 (depends on 1) The display panel of claim 1, wherein a distance between any two adjacent ones of the plurality of first openings is equal. ### Claim 15 A display device, comprising a display panel, wherein the display panel comprises: a display area and a non-display area, wherein the non-display area comprises a fan-out area and a bonding area arranged in a direction facing away from the display area; the fan-out area comprises a first section and a second section; the second section is a bending area; and the first section, the second section and the bonding area are arranged in a first direction; and a polarizer, wherein a side of the polarizer facing towards the fan-out area is provided with a plurality of first openings; and the bending area and the bonding area are covered with a protective glue which extends to an edge of the polarizer in the first section. ### Claim 16 (depends on 9) The display panel of claim 9, wherein the plurality of signal lines at the edge of the polarizer are parallel to the first direction. ### Claim 17 (depends on 10) The display panel of claim 10, wherein the plurality of signal lines at the edge of the polarizer are parallel to the first direction. ### Claim 18 (depends on 11) The display panel of claim 11, wherein the plurality of signal lines at the edge of the polarizer are parallel to the first direction.