# US 12,016,144 B2 · Display screen 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 12,016,144 B2 - Document ID: US12016144B2 - Status: Granted - Kind: B2 - Application number: 17/442,042 - Filed: 2021-08-04 - Published: 2024-01-25 - Granted: 2024-06-18 - Earliest claimed: 2021-07-19 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Wen Han; Zikang Feng - Web page: https://patentgrep.com/patent/US12016144B2 ## CPC - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - H05K 5/03: Covers - G06F 1/1624: {with sliding enclosures, e.g. sliding keyboard or display} - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - H04M 1/0268: {including a flexible display panel} - H05K 5/0217: {Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03)} - H04M 1/0237: {Sliding mechanism with one degree of freedom} - H04M 1/185: {Improving the shock resistance of the housing, e.g. by increasing the rigidity} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A display screen and a display device are provided. The display has a bending area. The display screen has a display layer and a cover plate layer. The cover plate layer is located on the display layer. The cover plate layer has a composite portion located in the bending area. A plurality of holes are formed in the composite portion. The holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion. ## Claims ### Claim 1 A display screen, comprising a bending area, wherein the display screen comprises: a display layer; and a cover plate layer, wherein the cover plate layer is located on the display layer, and the cover plate layer includes a composite portion located in the bending area, wherein a plurality of holes are defined in the composite portion, and the holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion, wherein the display layer comprises an array substrate layer, the array substrate layer comprises a plurality of film layers, and a portion of at least one of the film layers in the array substrate layer is provided with a plurality of first openings; the composite portion comprises a main composite portion and a first auxiliary composite portion and a second auxiliary composite portion located on both sides of the main composite portion, wherein a volume ratio of the plurality of holes in the main composite portion is greater than a volume ratio of the plurality of holes in any one of the first sub-composite portion and the second sub-composite portion; wherein a distance, which is in a second direction perpendicular to a first direction, between two adjacent holes in the first sub-composite portion, a distance in the second direction between two adjacent holes in the main composite portion, a distance in the second direction between two adjacent holes in the second sub-composite portion are gradually changed along the second direction, the first direction is a direction in which the main composite portion points to the second auxiliary composite portion. ### Claim 2 (depends on 1) The display screen according to claim 1, wherein a volume of the holes in the main composite portion is greater than a volume of the holes in any one of the first sub-composite portion and the second sub-composite portion. ### Claim 3 (depends on 1) The display screen according to claim 1, wherein a distance between two adjacent holes in the main composite portion is less than a distance between two adjacent holes in any one of the first sub-composite portion and the second sub-composite portion. ### Claim 4 (depends on 1) The display screen according to claim 1, wherein the plurality of holes are arranged into a plurality of hole groups, and each of the hole groups includes the plurality of holes, wherein the plurality of hole groups are arranged along the first direction, the plurality of holes in every two adjacent hole groups are arranged staggered along the second direction. ### Claim 5 (depends on 4) The display screen according to claim 4, wherein the plurality of holes in every two adjacent hole groups in the main composite portion have overlapping portions in the second direction. ### Claim 6 A display screen, comprising a bending area, wherein the display screen comprises: a display layer; and a cover plate layer, wherein the cover plate layer is located on the display layer, and the cover plate layer includes a composite portion located in the bending area, wherein a plurality of holes are defined in the composite portion, and the holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion; the composite portion comprises a main composite portion and a first auxiliary composite portion and a second auxiliary composite portion located on both sides of the main composite portion, wherein a volume ratio of the plurality of holes in the main composite portion is greater than a volume ratio of the plurality of holes in any one of the first sub-composite portion and the second sub-composite portion; wherein a distance, which is in a second direction perpendicular to a first direction, between two adjacent holes in the first sub-composite portion, a distance in the second direction between two adjacent holes in the main composite portion, a distance in the second direction between two adjacent holes in the second sub-composite portion are gradually changed along the second direction, the first direction is a direction in which the main composite portion points to the second auxiliary composite portion. ### Claim 7 (depends on 6) The display screen according to claim 6, wherein a volume of the holes in the main composite portion is greater than a volume of the holes in any one of the first sub-composite portion and the second sub-composite portion. ### Claim 8 (depends on 6) The display screen according to claim 6, wherein a distance between two adjacent holes in the main composite portion is less than a distance between two adjacent holes in any one of the first sub-composite portion and the second sub-composite portion. ### Claim 9 (depends on 6) The display screen according to claim 6, wherein the plurality of holes are arranged into a plurality of hole groups, and each of the hole groups includes the plurality of holes, wherein the plurality of hole groups are arranged along the first direction, the plurality of holes in every two adjacent hole groups are arranged staggered along the second direction. ### Claim 10 (depends on 9) The display screen according to claim 9, wherein the plurality of holes in every two adjacent hole groups in the main composite portion have overlapping portions in the second direction. ### Claim 11 (depends on 10) The display screen according to claim 10, wherein the plurality of holes in the two adjacent hole groups in the first sub-composite portion and the second sub-composite portion have overlapping portions in the second direction, wherein, in the second direction, a size of the overlapping portions of the first sub-composite portion and the second sub-composite portion is smaller than a size of the overlapping portions in the main composite portion. ### Claim 12 (depends on 9) The display screen according to claim 9, wherein, in the first direction, a plurality of first gaps are defined between two adjacent holes in the first sub-composite portion, and the plurality of the first gaps show a decreasing trend in the first direction. ### Claim 13 (depends on 9) The display screen according to claim 9, wherein, in the first direction, a plurality of second gaps are defined between two adjacent holes in the second sub-composite portion, and a plurality of the second gaps show an increasing trend in the first direction. ### Claim 14 (depends on 6) The display screen according to claim 6, wherein a projection of the holes on the display layer is an axisymmetric figure, and two opposite ends in the projection are both semi-elliptical, wherein extension lines of major axes of two semi-ellipses are both perpendicular to a symmetry axis of the projection. ### Claim 15 (depends on 6) The display screen according to claim 6, wherein at least one of the holes extends from a side of the composite portion close to the display layer to a side away from the display layer, and the holes do not penetrate the composite portion. ### Claim 16 (depends on 6) The display screen according to claim 6, wherein material filled in the holes comprises resin or curing adhesive. ### Claim 17 A display device, comprising a display screen, wherein the display screen comprises: a display layer; a cover plate layer, wherein the cover plate layer is located on the display layer, and the cover plate layer includes a composite portion located in a bending area, wherein a plurality of holes are defined in the composite portion, and the holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion, the composite portion comprises a main composite portion and a first auxiliary composite portion and a second auxiliary composite portion located on both sides of the main composite portion, wherein a volume ratio of the plurality of holes in the main composite portion is greater than a volume ratio of the plurality of holes in any one of the first sub-composite portion and the second sub-composite portion; wherein a distance, which is in a second direction perpendicular to a first direction, between two adjacent holes in the first sub-composite portion, a distance in the second direction between two adjacent holes in the main composite portion, a distance in the second direction between two adjacent holes in the second sub-composite portion are gradually changed along the second direction, the first direction is a direction in which the main composite portion points to the second auxiliary composite portion; wherein the display device further comprises: a supporting member, wherein the display screen is laid on the supporting member, and the supporting member comprises a first supporting member and a second supporting member, wherein the first support member and the second support member are relatively slidably arranged, and the first support member corresponds to the bending area, a transmission mechanism, wherein the transmission mechanism is connected to the first support member, a first end of the cover plate layer is connected to an end of the second support member away from the first support member, and a second end of the cover plate layer is connected to the transmission mechanism; and a reel, wherein the reel is located at an end of the first support member away from the second support member, wherein, when the second support member and the first support member slide relatively, the cover plate layer causes the display screen to move relative to the supporting member under an action of the second supporting member and the transmission mechanism, wherein the reel is used to assist a relative movement of the display screen on the supporting member; and wherein the display layer comprises a pre-bending part, the pre-bending portion bypasses the reel and extends to a side of the first support member away from the cover plate layer, or the pre-bending portion is located at an end of the first support member away from the cover plate layer after the display screen moves relative to the support member. ### Claim 18 (depends on 17) The display device according to claim 17, wherein the display layer comprises a polarizing layer, and two ends of the polarizing layer are respectively connected to two ends of the cover plate layer, wherein, when the second support member and the first support member slide relatively, the cover plate layer and the polarizing layer make the display screen relatively move on the supporting member under an action of the second supporting member and the transmission mechanism.