# US 2017/0290177 A1 · Foldable display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0290177 A1 - Document ID: US20170290177A1 - Status: Published application - Kind: A1 - Application number: 15/511,458 - Filed: 2015-09-18 - Published: 2017-10-05 - Earliest claimed: 2015-06-25 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Wenbo WANG - Web page: https://patentgrep.com/patent/US20170290177A1 ## CPC - G02F 1/133305: {Flexible substrates, e.g. plastics, organic film} - H05K 5/0217: {Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03)} - H05K 5/15: assembled by resilient members - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - H10K 2102/311: {Flexible OLED} - 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 - 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 - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An embodiment of the present invention provides a foldable display device comprising a foldable housing and a flexible display screen, the flexible display screen having a first end and a second end disposed opposite to each other in a first direction, wherein the first end of the flexible display screen is secured to the foldable housing, the second end of the flexible display screen is removable relative to the foldable housing; and when the foldable display device is in a folded state, the flexible display screen is located on a side of the foldable opposite to the folded surface of the foldable housing. The present invention can solve the problem that the radius of curvature of the folded portion of the flexible display screen is too small when the display device is folded, so that the flexible display screen can be prevented from being damaged. ## Claims ### Claim 1 A foldable display device, comprising a foldable housing, and a flexible display screen having a first end and a second end disposed opposite to each other in a first direction; wherein the first end of the flexible display screen is secured to the foldable housing; the second end of the flexible display screen is removable with respect to the foldable housing; the flexible display screen is located on a side of the foldable housing opposite to a folded surface when the foldable display device is in a folded state. ### Claim 2 (depends on 1) The foldable display device according to claim 1, wherein the foldable housing is provided with a first fixing part for fixing the second end of the flexible display screen when the foldable display device is in an unfolded state. ### Claim 3 (depends on 1) The foldable display device according to claim 1, wherein the flexible display screen is moved toward an outer side of the foldable display device so as to be on the side of the foldable housing opposite to the folded surface when the foldable display device in the unfolded state is folded inward. ### Claim 4 (depends on 1) The foldable display device of claim 1, wherein the first end of the flexible display screen is secured to the foldable housing by an elastic member. ### Claim 5 (depends on 4) The foldable display device according to claim 4, wherein the elastic member comprises a spring, or a rubber band. ### Claim 6 (depends on 1) The foldable display device according to claim 1, wherein the foldable display device further comprises a second fixing part that is configured to fix the second end of the flexible display screen after the foldable display device is folded. ### Claim 7 (depends on 6) The foldable display device of claim 6, wherein the foldable display device further comprises a foldable outer frame, a cavity that is configured to accommodate the flexible display screen after the foldable display device is folded, wherein the cavity is disposed between the foldable outer frame and the foldable housing; wherein the cavity is disposed adjacent to an outer surface of the foldable housing after folding of the foldable display device. ### Claim 8 (depends on 7) The foldable display device according to claim 7, wherein the second fixing part is provided inside the cavity. ### Claim 9 (depends on 8) The foldable display device according to claim 8, wherein the second fixing part is two elastic protrusions disposed opposite to each other in the cavity. ### Claim 10 (depends on 7) The foldable display device of claim 7, wherein the foldable outer frame is made of a transparent material so that the flexible display screen can still display after folding of the foldable display device. ### Claim 11 (depends on 1) The foldable display device according to claim 1, wherein at least a side surface of the two side surfaces disposed opposite to each other in the first direction of the foldable housing adjacent to the first fixing part is an arcuate surface. ### Claim 12 (depends on 11) The foldable display device according to claim 11, wherein the folded portion of the foldable housing after folding of the foldable display device has an arcuate surface. ### Claim 13 (depends on 1) The foldable display device according to claim 1, wherein the first fixing part includes two blocking portions and an opening and closing portion; one end of each blocking portion is connected to the foldable housing, and the other end thereof is connected to the opening and closing portion, which is movable with respect to the blocking portions. ### Claim 14 (depends on 1) The foldable display device of claim 1, wherein the foldable display device further comprises a circuit board disposed on the foldable housing adjacent to the first end of the flexible display screen.