# US 2025/0165031 A1 · Method for attaching display cover and attaching device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0165031 A1 - Document ID: US20250165031A1 - Status: Published application - Kind: A1 - Application number: 17/622,862 - Filed: 2021-12-22 - Published: 2025-05-22 - Earliest claimed: 2021-12-10 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Bin Zou; Liang Sun - Web page: https://patentgrep.com/patent/US20250165031A1 ## CPC - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - H10K 77/111: {Flexible substrates} - H10K 2102/311: {Flexible OLED} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A method and device for attaching a display cover are provided. In an attaching method, a display panel is fixed to a sealing mechanism, and a cover is fixed to a bottom of an accommodating cavity of a housing. By filling a sealed space of the sealing mechanism with a pressurized gas, while a stretching mechanism pushes the display panel to deform, the display panel and the cover are bonded together under an action of the stretching mechanism and the pressurized gas. This alleviates an issue of a limited molding process in realization of three-dimensional curved surface of current flexible OLED and flexible micro-LED displays. ## Claims ### Claim 1 A method for attaching a display cover, wherein a display comprises a display panel and a cover, the display panel and the cover are attached by an attaching device, and the method for attaching the display cover comprises: fixing the cover to a bottom of an accommodating cavity of the attaching device; fixing the display panel in a sealing mechanism of the accommodating cavity of the attaching device facing a side of the cover, forming a sealed space by the sealing mechanism, and arranging the display panel and the cover opposite to each other; filling the sealed space of the sealing mechanism with a pressurized gas, pushing a stretching mechanism movably connected with the sealing mechanism to move to the display panel, and bonding the display panel and the cover under a pushing force of the stretching mechanism and a pressure of the pressurized gas. ### Claim 2 (depends on 1) The method for attaching the display cover according to claim 1, wherein before filling the sealed space of the sealing mechanism with the pressurized gas, the method for attaching the display cover comprises following steps: heating the sealed space of the sealing mechanism and the display panel at a preset temperature by a heating mechanism fixed in the sealing mechanism. ### Claim 3 (depends on 2) The method for attaching the display cover according to claim 2, wherein the preset temperature ranges from 70 degrees Celsius to 150 degrees Celsius. ### Claim 4 (depends on 2) The method for attaching the display cover according to claim 2, wherein a heating method of the heating mechanism comprises at least one heating method selected from a UV irradiation, an infrared heating, a resistance wire heating, a microcrystalline heating plate heating, and a quartz tube heating. ### Claim 5 (depends on 1) The method for attaching the display cover according to claim 1, wherein a step of filling the sealed space of the sealing mechanism with the pressurized gas comprises: filling the pressurized gas into a chamber of the stretching mechanism through a first air inlet of the stretching mechanism located outside the sealing mechanism, and the pressurized gas entering the sealed space of the sealing mechanism through a first air outlet of the stretching mechanism located in the sealing mechanism. ### Claim 6 (depends on 1) The method for attaching the display cover according to claim 1, wherein a step of filling the sealed space of the sealing mechanism with the pressurized gas comprises: filling the sealed space of the sealing mechanism with the pressurized gas through a second air inlet on the sealing mechanism. ### Claim 7 (depends on 1) The method for attaching the display cover according to claim 1, wherein a pressure of the pressurized gas ranges from 0.5 Mpa to 4 Mpa. ### Claim 8 (depends on 1) The method for attaching the display cover according to claim 1, wherein a step of fixing the display panel at a third opening of the sealing mechanism comprises: fixing the display panel to a side of the sealing mechanism facing the cover through a clamping member on the sealing mechanism. ### Claim 9 (depends on 1) The method for attaching the display cover according to claim 1, wherein a step of pushing the stretching mechanism to move to the display panel further comprises: pushing the stretching mechanism to move to the display panel and making a lifting mechanism at the bottom of the accommodating cavity push the cover to move to the display panel. ### Claim 10 (depends on 1) The method for attaching the display cover according to claim 1, wherein before fixing the display panel in the sealing mechanism of the accommodating cavity of the attaching device facing the side of the cover, the method further comprises: attaching a protective layer to a side of the display panel; fixing the display panel on a side of the sealing mechanism facing the cover, and the protective layer facing the sealing mechanism. ### Claim 11 (depends on 10) The method for attaching the display cover according to claim 10, further comprising peeling off the protective layer after bonding the display panel and the cover. ### Claim 12 An attaching device, comprising: a housing formed with an accommodating cavity, wherein a side of the housing has a first opening; a sealing mechanism disposed in the accommodating cavity and having a second opening and a third opening opposite to the first opening; a stretching mechanism passing through the first opening and being slidably connected to the sealing mechanism through the second opening. ### Claim 13 (depends on 12) The attaching device according to claim 12, further comprising a heating mechanism fixed in the sealed space of the sealing mechanism. ### Claim 14 (depends on 13) The attaching device according to claim 13, wherein the stretching mechanism comprises a chamber, a first air inlet on a side of the chamber, and a first air outlet on another side of the chamber, and the chamber passes through the sealed space of the sealing mechanism through the first air outlet. ### Claim 15 (depends on 14) The attaching device according to claim 14, wherein an end of the stretching mechanism located in the sealed space of the sealing mechanism is a circular arc surface. ### Claim 16 (depends on 13) The attaching device according to claim 13, wherein the sealing mechanism is provided with a second air inlet, and the second air inlet is located between the second opening and the third opening. ### Claim 17 (depends on 12) The attaching device according to claim 12, wherein the housing corresponding to the bottom of the accommodating cavity is provided with a second air outlet, and the sealed space of the sealing mechanism is communicated with an outside through the second air outlet. ### Claim 18 (depends on 12) The attaching device according to claim 12, further comprising a clamping member, the clamping member being disposed on an edge of the third opening of the sealing mechanism. ### Claim 19 (depends on 12) The attaching device according to claim 12, further comprising a lifting mechanism disposed at the bottom of the accommodating cavity. ### Claim 20 (depends on 12) The attaching device according to claim 12, wherein a size of the second opening is less than a size of the third opening.