# US 12,016,235 B2 · Display module, display panel thinning method, 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 12,016,235 B2 - Document ID: US12016235B2 - Status: Granted - Kind: B2 - Application number: 17/418,137 - Filed: 2020-12-31 - Published: 2023-05-04 - Granted: 2024-06-18 - Earliest claimed: 2020-01-02 - Assignees: Ordos Yuansheng Optoelectronics Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Ordos Yuansheng Optoelectronics Co., Ltd.; BOE Technology Group Co., Ltd. - Inventors: Liman Peng; Yan Wu; Qianqian Zhang; Zhiyong Xue; Liang Tang; Guoping Zhang; Qiang Chen - Web page: https://patentgrep.com/patent/US12016235B2 ## CPC - H10K 50/844: Encapsulations - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - H10K 59/40: OLEDs integrated with touch screens - H10K 59/8722: {Peripheral sealing arrangements, e.g. adhesives, sealants} - H10K 71/40: Thermal treatment, e.g. annealing in the presence of a solvent vapour - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract The present disclosure provides a display module, a display panel thinning method, a display panel, and a display device. The display module provided by the present disclosure includes: a display panel, a protective film located on a to-be-protected face of the display panel, a first anti-acid film located on the protective film, a second anti-acid film located on the first anti-acid film, and a sealant. ## Claims ### Claim 1 A display module, comprising: a display panel, comprising a to-be-thinned substrate and a touch substrate opposite to each other, wherein a surface of the touch substrate facing away from the to-be-thinned substrate is a to-be-protected face, and the to-be-thinned substrate is divided into a to-be-thinned region and a non-thinned region in a direction pointing from the to-be-thinned substrate to the touch substrate; a protective film, located on the to-be-protected face of the display panel, wherein the protective film covers a part of the to-be-protected face; a first anti-acid film, located on a surface of one side of the protective film facing away from the to-be-protected face, wherein an orthographic projection of the first anti-acid film on the to-be-protected face falls in the to-be-protected face, and an orthographic projection of the protective film on the first anti-acid film falls in the first anti-acid film; a second anti-acid film, located on a surface of one side of the first anti-acid film facing away from the to-be-protected face, wherein an orthographic projection of the second anti-acid film on the to-be-protected face falls in the to-be-protected face, and an orthographic projection of the first anti-acid film on the second anti-acid film falls in the second anti-acid film; and a sealant, covering a region of the to-be-protected face not covered by the protective film, a side face of the touch substrate and a side face of the non-thinned region. ### Claim 2 (depends on 1) The display module according to claim 1, wherein the orthographic projection of the protective film on the first anti-acid film falls in the first anti-acid film and is smaller than the first anti-acid film; and the orthographic projection of the first anti-acid film on the second anti-acid film falls in the second anti-acid film and is smaller than the second anti-acid film. ### Claim 3 (depends on 2) The display module according to claim 2, wherein the sealant completely covers a side face of the protective film and a side face of the first anti-acid film; and a space between a region of the first anti-acid film not covered by the protective film and the to-be-protected face is filled with the sealant; and a space between a region of the second anti-acid film not covered by the first anti-acid film and the to-be-protected face is filled with the sealant. ### Claim 4 (depends on 1) The display module according to claim 1, wherein in a direction perpendicular to the to-be-protected face, a thickness of the sealant is greater than a thickness of the touch substrate, and a total thickness of a region of the display module not covered by the sealant is greater than or equal to a thickness of the to-be-thinned region. ### Claim 5 (depends on 2) The display module according to claim 2, wherein the to-be-protected face has first sides parallel to a first direction and second sides parallel to a second direction; a distance from an edge of the protective film to a closest first side is approximately: 17-27 mm, and a distance from an edge of the protective film to a closest second side is approximately: 14-24 mm; and the first direction and the second direction cross each other. ### Claim 6 (depends on 5) The display module according to claim 5, wherein a distance from an edge of the first anti-acid film to a closest first side is approximately: 2-18 mm, and a distance from an edge of the first anti-acid film to a closest second side is approximately: 2-20 mm. ### Claim 7 (depends on 5) The display module according to claim 5, wherein a distance from an edge of the second anti-acid film to a closest first side is approximately less than or equal to 0.5 mm, and a distance from an edge of the second anti-acid film to a closest second side is approximately less than or equal to 0.5 mm. ### Claim 8 (depends on 7) The display module according to claim 7, wherein the orthographic projection of the second anti-acid film on the to-be-protected face coincides with the to-be-protected face. ### Claim 9 (depends on 1) The display module according to claim 1, wherein the protective film is glass spacer paper; and a material of the first anti-acid film and a material of the second anti-acid film comprise polyethylene terephthalate. ### Claim 10 A display panel thinning method, comprising: attaching a protective film to a to-be-protected face of a display panel, wherein the display panel comprises: a to-be-thinned substrate and a touch substrate opposite to each other, the to-be-protected face is a surface of the touch substrate facing away from the to-be-thinned substrate, the to-be-thinned substrate is divided into a to-be-thinned region and a non-thinned region in a direction pointing from the to-be-thinned substrate to the touch substrate, and the protective film covers a part of the to-be-protected face; attaching a first anti-acid film to one side of the protective film facing away from the to-be-protected face, wherein an orthographic projection of the first anti-acid film on the to-be-protected face falls in the to-be-protected face, and an orthographic projection of the protective film on the first anti-acid film falls in the first anti-acid film; attaching a second anti-acid film to one side of the first anti-acid film facing away from the protective film, wherein an orthographic projection of the second anti-acid film on the to-be-protected face falls in the to-be-protected face, and an orthographic projection of the first anti-acid film on the second anti-acid film falls in the second anti-acid film; and coating a region of the to-be-protected face not covered by the protective film, a side face of the touch substrate and a side face of the non-thinned region with a sealant, and curing the sealant. ### Claim 11 (depends on 10) The method according to claim 10, wherein the coating the region of the to-be-protected face not covered by the protective film with the sealant further comprises: coating the region of the to-be-protected face not covered by the protective film with the sealant such that the sealant completely covers a side face of the protective film and a side face of the first anti-acid film. ### Claim 12 (depends on 10) The method according to claim 10, wherein the coating the side face of the touch substrate and the side face of the non-thinned region with the sealant further comprises: coating the side face of the touch substrate and the side face of the non-thinned region with the sealant such that in a direction perpendicular to the to-be-protected face, a thickness of the sealant is greater than a thickness of the touch substrate, and a total thickness of a region of the display module not covered by the sealant is greater than or equal to a thickness of the to-be-thinned region. ### Claim 13 (depends on 10) The method according to claim 10, wherein after curing the sealant, the method further comprises: placing the display panel into an isolation frame, wherein the isolation frame has spacer parts, the spacer parts support the display panel on one side of the second anti-acid film facing away from the to-be-thinned region, and the spacer parts are not in contact with the to-be-thinned region; and placing the isolation frame into a thinning pool containing a thinning liquid, and corroding the to-be-thinned region. ### Claim 14 (depends on 13) The method according to claim 13, wherein the placing the display panel into the isolation frame further comprises: placing a plurality of display panels into a same isolation frame, wherein adjacent display panels are spaced by the spacer parts. ### Claim 15 (depends on 13) The method according to claim 13, wherein after corroding the to-be-thinned region, the method further comprises: cleaning the thinned display panel; and removing the second anti-acid film, the first anti-acid film, the protective film and the sealant. ### Claim 16 (depends on 10) A display panel, wherein the display panel is obtained after the to-be-thinned region is thinned by the method according to claim 10. ### Claim 17 (depends on 16) A display device, comprising the display panel according to claim 16.