# US 11,116,091 B1 · Flexible 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 11,116,091 B1 - Document ID: US11116091B1 - Status: Granted - Kind: B1 - Application number: 16/963,512 - Filed: 2020-06-12 - Granted: 2021-09-07 - Earliest claimed: 2020-04-27 - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Zhuo Zhang; Wen Han - Web page: https://patentgrep.com/patent/US11116091B1 ## CPC - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 1/1624: {with sliding enclosures, e.g. sliding keyboard or display} - G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing} - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - H05K 5/0217: {Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03)} - H05K 5/0086: {portable, e.g. battery operated apparatus (casings for switching devices H01H9/02)} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract The present invention provides a flexible display screen and a display device. The flexible display screen includes a display panel, a reel mechanism, and a support structure. The display panel includes a display surface and a support base away from the display surface. The support base is a stepped structure. The reel mechanism is disposed on a side of the display panel. A part of the display panel is wrapped around inside the reel mechanism. The support structure includes a plurality of support plates. ## Claims ### Claim 1 A flexible display screen, comprising: a display panel comprising a display surface and a support base away from the display surface, wherein the support base is a stepped structure; at least one reel mechanism disposed on a side of the display panel, wherein a part of the display panel is wrapped around inside the reel mechanism; and a support structure comprising a plurality of support plates; wherein when the display panel is drawn out, the plurality of support plates in the support structure forms a laminated structure, and a step of the support base of the display panel closest to the reel mechanism is disposed on a topmost layer of the plurality of support plates; and wherein when the display panel is expanded, the plurality of support plates in the support structure corresponding thereto is drawn out, and the plurality of support plates drawn out form a stepped structure, which fits the stepped structure of the support base of the expanded display panel, and the display surface of the expanded display panel forms a flat surface. ### Claim 2 (depends on 1) The flexible display screen according to claim 1, further comprising: a flexible layer disposed on the display surface of the display panel; wherein a side of the flexible layer is fixed in the reel mechanism, and a length of the display panel is less than a length of the flexible layer. ### Claim 3 (depends on 2) The flexible display screen according to claim 2, wherein the reel mechanism comprises: a reel provided with a spiral winding structure; wherein a side of the flexible layer is fixed to a center of the reel, and the display panel and the flexible layer are wrapped into the reel mechanism along the reel. ### Claim 4 (depends on 3) The flexible display screen according to claim 3, wherein the reel mechanism further comprises: at least one coil spring mounted on one end of the reel. ### Claim 5 (depends on 3) The flexible display screen according to claim 3, wherein the reel mechanism further comprises: balls disposed on a surface of the reel facing the display panel; or rollers disposed on a surface of the reel facing the display panel; wherein a rotation direction of the balls or the rollers is same as a rotation direction of the reel mechanism. ### Claim 6 (depends on 3) The flexible display screen according to claim 3, wherein the reel mechanism further comprises: a housing; wherein the reel is rotationally disposed in the housing, and an end of a last layer of the plurality of support plates is connected to the housing; and wherein the housing is provided with an opening, and the display panel and the flexible layer extend into the reel mechanism through the opening. ### Claim 7 (depends on 2) The flexible display screen according to claim 2, further comprising: a mid-frame case; wherein the display panel and the support structure are disposed in the mid-frame case, and the display surface is exposed; and wherein a side of the flexible layer away from the reel is fixed in the mid-frame case. ### Claim 8 (depends on 7) The flexible display screen according to claim 7, further comprising: a battery disposed in the mid-frame case; and a motherboard disposed in the mid-frame case and connected to the display panel and the battery. ### Claim 9 (depends on 1) The flexible display screen according to claim 1, wherein the display panel further comprises: a display layer disposed on the support base; a touch layer disposed on a surface of the display layer away from the support base; and a polarizer disposed on a surface of the touch layer away from the display layer. ### Claim 10 (depends on 1) A display device, comprising the flexible display screen according to claim 1.