# US 12,114,448 B2 · Device for varying shape of display panel, and curved display apparatus equipped with same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,114,448 B2 - Document ID: US12114448B2 - Status: Granted - Kind: B2 - Application number: 17/797,441 - Filed: 2021-01-11 - Published: 2023-03-09 - Granted: 2024-10-08 - Earliest claimed: 2020-02-07 - Assignees: Tovis Co., Ltd. - Applicants: Tovis Co., Ltd. - Inventors: Chang Min Oh - Web page: https://patentgrep.com/patent/US12114448B2 ## CPC - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - H05K 5/0226: {Hinges} - F16C 11/04: Pivotal connections (hinges for doors, windows or wings E05D) - G06F 1/1601: {Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays (constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64)} - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 1/1675: {Miscellaneous details related to the relative movement between the different enclosures or enclosure parts} - G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)} - 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 - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A device for varying the shape of a display panel includes: a variable case in which a flexible display panel is installed, the variable case having a variable shape that can be changed in order to change the shape of the display panel; and a driving unit for driving the variable case. The variable case includes: a first curved accommodation portion by which one end of the display panel is bent into a curved surface and fixed; a second curved accommodation portion by which the other end of the display panel is bent into a curved surface and fixed so that the one end and other end of the display panel form a single curved surface; and a hinge portion which rotatably connects the first curved accommodation portion and the second curved accommodation portion. ## Claims ### Claim 1 A device for varying a shape of a display panel, the device comprising: a variable case configured to allow a flexible display panel to be installed and enclosed therein, a shape of the variable case being varied to vary a shape of the display panel; and a driving unit configured to drive the variable case, wherein the variable case comprises: a first curved surface receiving portion configured to fix one end of the display panel in a state of being bent in a curved shape; a second curved surface receiving portion configured to fix the other end of the display panel in a state of being bent in a curved shape so as to constitute a single curved surface together with the one end of the display panel; and a hinge portion configured to turnably connect the first curved surface receiving portion and the second curved surface receiving portion to each other, the hinge portion being configured to turn the first curved surface receiving portion and the second curved surface receiving portion such that the single curved surface of the display panel is varied to a plurality of curved surfaces; and the hinge portion comprises a plurality of hinge connectors hingedly connected to each other so as to be turnable relative to each other, the plurality of hinge connectors being configured to hingedly connect the first curved surface receiving portion and the second curved surface receiving portion to each other; and the hinge portion turns the first curved surface receiving portion or the second curved surface receiving portion so as to have a curved surface reverse to the curved surface of the one end or the other end of the display panel; and the driving unit comprises a driving bracket installed at a rear of the variable case, the driving bracket comprises: a first support portion with a first horizontal portion turnably coupled to the first curved surface receiving portion, the first horizontal portion being configured to pull or push the first curved surface receiving portion such that the first curved surface receiving portion is turned relative to the hinge portion; a second support portion with a second horizontal portion turnably coupled to the second curved surface receiving portion, the second horizontal portion being configured to pull or push the second curved surface receiving portion such that the second curved surface receiving portion is turned relative to the hinge portion; and a bracket connection portion comprises: a first and second vertical portions hingedly connected to each other by a bracket connection portion and configured to turnably connect the first horizontal portion and the second horizontal portions respectively. ### Claim 2 (depends on 1) The device according to claim 1, wherein the driving unit comprises a variable driving mechanism configured to pull or push the driving bracket such that the first support portion and the second support portion are turned relative to the hinge portion. ### Claim 3 (depends on 1) The device according to claim 1, wherein the variable case comprises a backlight unit installed at a rear of the display panel, the backlight unit being configured to provide light to the display panel, the backlight unit being bent together with the display panel depending on change in shape of the variable case. ### Claim 4 A curved display apparatus equipped with a device for varying a shape of a display panel, the curved display apparatus comprising: a device for varying a shape of a display panel, the device comprising: a variable case configured to allow a flexible display panel to be installed and enclosed therein, a shape of the variable case being varied to vary a shape of the display panel; and a driving unit configured to drive the variable case, wherein the variable case comprises: a first curved surface receiving portion configured to fix one end of the display panel in a state of being bent in a curved shape; a second curved surface receiving portion configured to fix the other end of the display panel in a state of being bent in a curved shape so as to constitute a single curved surface together with the one end of the display panel; and a hinge portion configured to turnably connect the first curved surface receiving portion and the second curved surface receiving portion to each other, the hinge portion being configured to turn the first curved surface receiving portion and the second curved surface receiving portion such that the single curved surface of the display panel is varied to a plurality of curved surfaces; a display main body configured to allow the device to be installed therein; and a panel position changing mechanism configured to change a position of the device in the display main body in order to achieve change in center of gravity or a visual effect due to change in shape of the display panel varied by the device; and the hinge portion comprises a plurality of hinge connectors hingedly connected to each other so as to be turnable relative to each other, the plurality of hinge connectors being configured to hingedly connect the first curved surface receiving portion and the second curved surface receiving portion to each other; and the hinge portion turns the first curved surface receiving portion or the second curved surface receiving portion so as to have a curved surface reverse to the curved surface of the one end or the other end of the display panel; and the driving unit comprises a driving bracket installed at a rear of the variable case, the driving bracket comprises: a first support portion with a first horizontal portion turnably coupled to the first curved surface receiving portion, the first horizontal portion being configured to pull or push the first curved surface receiving portion such that the first curved surface receiving portion is turned relative to the hinge portion; a second support portion with a second horizontal portion turnably coupled to the second curved surface receiving portion, the second horizontal portion being configured to pull or push the second curved surface receiving portion such that the second curved surface receiving portion is turned relative to the hinge portion; and a bracket connection portion comprises: a first and second vertical portions hingedly connected to each other by a bracket connection portion and configured to turnably connect the first horizontal portion and the second horizontal portions respectively. ### Claim 5 (depends on 4) The curved display apparatus according to claim 4, wherein the driving unit comprises a variable driving mechanism configured to pull or push the driving bracket such that the first support portion and the second support portion are turned relative to the hinge portion. ### Claim 6 (depends on 4) The curved display apparatus according to claim 4, wherein the variable case comprises a backlight unit installed at a rear of the display panel, the backlight unit being configured to provide light to the display panel, the backlight unit being bent together with the display panel depending on change in shape of the variable case.