# US 10,319,265 B2 · Flexible display panel, fabrication method, display apparatus, and portable terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,319,265 B2 - Document ID: US10319265B2 - Status: Granted - Kind: B2 - Application number: 15/636,911 - Filed: 2017-06-29 - Published: 2017-10-19 - Granted: 2019-06-11 - Earliest claimed: 2016-12-19 - Assignees: Shanghai Tianma Micro-Electronics Co., Ltd.; Tianma Micro-Electronics Co., Ltd. - Applicants: Shanghai Tianma Micro-Electronics Co., Ltd.; Tianma Micro-Electronics Co., Ltd. - Inventors: Yu Cai - Web page: https://patentgrep.com/patent/US10319265B2 ## CPC - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass - H10K 77/111: {Flexible substrates} - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - H10K 71/20: Changing the shape of the active layer in the devices, e.g. patterning - Y02E 10/549: Organic PV cells - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A flexible display panel, a display apparatus, a portable terminal, and a flexible display panel fabrication method are provided. The flexible display panel comprises a display panel having a first surface and a second surface and capable of being bent towards the second surface, and a support layer disposed on the second surface of the display panel and configured to support the second surface of the display panel when bending the display panel, such that a local minimum radius of curvature in a bending portion of the display panel is greater than or equal to a predetermined value. The local minimum radius of curvature is the smallest radius of curvature anywhere in the bending portion of the flexible display panel. ## Claims ### Claim 1 A flexible display panel, comprising: a display panel having a first surface and a second surface and capable of being bent towards the second surface; and at least two supporters disposed on the second surface of the display panel and configured to support the second surface of the display panel when bending the display panel, such that a local minimum radius of curvature in a bending portion of the display panel is greater than or equal to a predetermined value, wherein: the local minimum radius of curvature is the smallest radius of curvature anywhere in the bending portion of the flexible display panel, a space between two adjacent supporters of the at least two supporters corresponds to the bending portion of the display panel, and W>2R, and T≥2R, where W denotes a distance between the two adjacent supporters of the at least two supporters of the flexible display panel, T denotes a thickness of each of the two adjacent supporters of the at least two supporters, and R denotes a maximum bending radius of the display panel. ### Claim 2 (depends on 1) The flexible display panel according to claim 1, wherein: the at least two supporters are made of elastic material. ### Claim 3 (depends on 1) The flexible display panel according to claim 1, wherein: each of the two adjacent supporters of the at least two supporters has an end in an arcuate shape; one end point of the arcuate shape contacts with the second surface of the display panel; and at a position where the arcuate shape and the second surface of the display panel intersect with each other, an angle formed between a tangent line of the arcuate shape and the second surface of the display panel is greater than or equal to 0° and smaller than 90°. ### Claim 4 (depends on 3) The flexible display panel according to claim 3, wherein: the angle formed between the tangent line of the arcuate shape and the second surface of the display panel is 0°. ### Claim 5 (depends on 1) The flexible display panel according to claim 1, wherein: in a direction perpendicular to the display panel, a supporter of the at least two supporters has a striped shape, and the at least two supporters are arranged in parallel. ### Claim 6 (depends on 1) The flexible display panel according to claim 1, wherein: in a direction perpendicular to the display panel, a supporter of the at least two supporters has a rectangular shape, and the at least two supporters are arranged in an array. ### Claim 7 (depends on 1) The flexible display panel according to claim 1, further comprising a protective layer, wherein: the at least two supporters have a first surface facing the display panel and an opposing side; the protective layer is disposed on the opposing side of the at least two supporters; the protective layer is flexible; and the protective layer covers the at least two supporters. ### Claim 8 (depends on 1) The flexible display panel according to claim 1, wherein: the first surface of the display panel is configured to display images; and the second surface of the display panel is not configured to display images. ### Claim 9 (depends on 1) The flexible display panel according to claim 1, wherein: the first surface of the display panel is configured to either display images or not display images, and the second surface of the display panel is configured to display images; and the at least two supporters are formed of a transparent material. ### Claim 10 (depends on 1) The flexible display panel according to claim 1, wherein: the at least two supporters have an elastic modulus smaller than a substrate located on the second surface of the display panel. ### Claim 11 (depends on 1) A display apparatus, comprising the flexible display panel according to claim 1. ### Claim 12 (depends on 11) A portable terminal, comprising the display apparatus according to claim 11. ### Claim 13 (depends on 1) The flexible display panel according to claim 1, wherein: each of the two adjacent supporters of the at least two supporters has an end in arcuate shape, and arcuate-shaped ends of the two adjacent supporters face each other. ### Claim 14 A fabrication method for a flexible display panel, comprising: forming a display panel having a first surface and a second surface, and capable of being bent towards the second surface; and forming at least two supporters on the second surface of the display panel and configured to support the second surface of the display panel when bending the display panel, such that a local minimum radius of curvature in a bending portion of the display panel is greater than or equal to a predetermined value, wherein: the local minimum radius of curvature is the smallest radius of curvature anywhere in the bending portion of the flexible display panel, a space between two adjacent supporters of the at least two supporters corresponds to the bending portion of the display panel, and W>2R, and T≥2R, where W denotes a distance between the two adjacent supporters of the at least two supporters of the flexible display panel, T denotes a thickness of each of the two adjacent supporters of the at least two supporters, and R denotes a maximum bending radius of the display panel. ### Claim 15 (depends on 14) The fabrication method according to claim 14, wherein forming the at least two supporters on the second surface of the display panel further comprises: forming a first layer on the second surface of the display panel; and performing a graphic patterning process to form the at least two supporters. ### Claim 16 (depends on 15) The fabrication method according to claim 15, wherein: each of the two adjacent supporters of the at least two supporters has an end in an arcuate shape; one end point of the arcuate shape contacts with the second surface of the display panel; and at a position where the arcuate shape and the second surface of the display panel intersect with each other, an angle formed between a tangent line of the arcuate shape and the second surface of the display panel is greater than or equal to 0° and smaller than 90°. ### Claim 17 (depends on 16) The fabrication method according to claim 16, wherein: the angle formed between the tangent line of the arcuate shape and the second surface of the display panel is 0°.