# US 12,118,161 B2 · Display device and method of manufacturing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,118,161 B2 - Document ID: US12118161B2 - Status: Granted - Kind: B2 - Application number: 18/314,295 - Filed: 2023-05-09 - Published: 2024-03-28 - Granted: 2024-10-15 - Earliest claimed: 2022-09-23 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Dong Hyun Kim - Web page: https://patentgrep.com/patent/US12118161B2 ## CPC - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0443: {using a single layer of sensing electrodes} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - H01B 7/04: Flexible cables, conductors, or cords, e.g. trailing cables - G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper - G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) ## Abstract A display device includes a first forward roll, a second forward roll, a third forward roll, a rotary shaft in a housing and spaced apart from the third forward roll, and a display panel engaging with the rotary shaft, the first forward roll, the second forward roll, and the third forward roll to be inserted into, or retracted from, the housing, the display panel includes a main display region, retracted from the housing through a first opening to display an image, a first sub-region, extending from the first forward roll to the second forward roll, a sub-display region, extending from the second forward roll to the third forward roll and overlapping a second opening in a plan view to display an image, and a second sub-region, extending from the third forward roll to the rotary shaft and wound on an outside of the rotary shaft. ## Claims ### Claim 1 A display device comprising: a housing including a first surface including a first opening, and a second surface including a second opening; a rotary shaft disposed in the housing; a display panel wound on an outside of the rotary shaft and inserted into, or retracted from, the housing through the first opening; a touch sensor disposed in the second opening and spaced apart from the display panel; and a driver disposed in the housing and electrically connected to the display panel and the touch sensor, wherein the touch sensor is transparent with respect to visible light, the display panel includes; a main display region that displays an image through the first opening; and a sub-display region that overlaps the touch sensor in a plan view and displays an image, and the driver controls touch stimulation applied to the touch sensor compatible with the image displayed in the sub-display region. ### Claim 2 (depends on 1) The display device of claim 1, wherein the driver defines the sub-display region by sensing a length by which the display panel is wound on an outside of the rotary shaft. ### Claim 3 (depends on 2) The display device of claim 2, wherein the display panel extends in a direction and is electrically connected to a printed circuit board, protruding beyond the display panel, on both sides of the display panel, and the printed circuit board is embedded in the rotary shaft. ### Claim 4 (depends on 3) The display device of claim 3, wherein the printed circuit board includes a first protruding portion that protrudes from a side of the display panel, and a second protruding portion that protrudes from another side of the display panel, the touch sensor is electrically connected to the first protruding portion, and the second protruding portion is electrically connected to the driver. ### Claim 5 (depends on 4) The display device of claim 4, wherein the touch sensor is electrically connected to the printed circuit board through a first flexible cable disposed in the housing, and the driver is electrically connected to the printed circuit board through a second flexible cable disposed in the housing. ### Claim 6 (depends on 5) The display device of claim 5, wherein an end of the first flexible cable is electrically connected to the touch sensor, another end of the first flexible cable is electrically connected to the first protruding portion of the printed circuit board, an end of the second flexible cable is electrically connected to the driver, and another end of the second flexible cable is electrically connected to the second protruding portion of the printed circuit board. ### Claim 7 (depends on 6) The display device of claim 6, wherein the rotary shaft is not visible due to the second surface of the housing. ### Claim 8 (depends on 1) The display device of claim 1, wherein the touch sensor completely seals the second opening of the second surface of the housing. ### Claim 9 (depends on 8) The display device of claim 8, wherein the touch sensor includes: a first substrate; touch electrodes disposed on the first substrate; and a second substrate disposed on the touch electrodes. ### Claim 10 (depends on 9) The display device of claim 9, further comprising: an air gap disposed between the touch sensor and the sub-display region. ### Claim 11 (depends on 10) The display device of claim 10, wherein the first substrate and the second substrate of the touch sensor each include a rigid material. ### Claim 12 (depends on 11) The display device of claim 11, wherein the first substrate and the second substrate each include glass and/or -quartz. ### Claim 13 (depends on 12) The display device of claim 12, wherein the display panel includes a display substrate including polyimide. ### Claim 14 A display device comprising: a housing including: a first surface including a first opening, the first surface being disposed on a first side of the housing in a first direction of the housing, and a second surface including a second opening, in a second direction of the housing, the second direction intersecting the first direction; a first forward roll adjacent to the first opening, in the housing; a second forward roll spaced apart from the first opening in the second direction, in the housing, and adjacent to the second opening; a third forward roll spaced apart from the second opening in the first direction, in the housing, and adjacent to the second opening; a rotary shaft disposed in the housing and spaced apart from the third forward roll and the second opening in the second direction; and a display panel engaging with the rotary shaft, the first forward roll, the second forward roll, and the third forward roll to be inserted into, or retracted from, the housing in the first direction through the first opening, wherein the display panel includes: a main display region, that is retracted from the housing through the first opening to display an image, a first sub-region, extending from the first forward roll to the second forward roll, a sub-display region, extending from the second forward roll to the third forward roll and overlapping the second opening in a plan view to display an image, and a second sub-region, extending from the third forward roll to the rotary shaft and wound on an outside of the rotary shaft. ### Claim 15 (depends on 14) The display device of claim 14, wherein the display panel has a display surface, and a base surface, opposite to the display surface, the first forward roll is disposed on the display surface, and the second forward roll and the third forward roll are disposed on the base surface. ### Claim 16 (depends on 15) The display device of claim 15, wherein the rotary shaft includes a cut groove accommodating an end of the second sub-region of the display panel. ### Claim 17 (depends on 16) The display device of claim 16, wherein the main display region of the display panel is inserted into the housing in case that the second sub-region of the display panel is wound on an outside of the rotary shaft. ### Claim 18 (depends on 17) The display device of claim 17, wherein the first surface includes a third opening, overlapping the first sub-region in a plan view, and the first sub-region displays an image through the third opening of the first surface of the housing. ### Claim 19 (depends on 14) The display device of claim 14, further comprising: a touch sensor completely sealing the second opening, wherein the touch sensor is transparent with respect to visible light. ### Claim 20 (depends on 19) The display device of claim 19, further comprising: an air gap disposed between the touch sensor and the sub-display region. ### Claim 21 (depends on 1) The display device of claim 1, wherein the sub-display region of the display panel is in the housing, and the image displayed in the sub-display region of the display panel is visible from an outside of the housing by way of the transparent touch sensor. ### Claim 22 (depends on 1) The display device of claim 1, wherein the image displayed in the sub-display region of the display panel displays a plurality of function buttons, and the display device is configured so that, upon a user selecting a function corresponding to one of the plurality of function buttons by touching a part of the touch sensor corresponding to the one of the plurality of function buttons displayed in the sub-display region of the display panel, the driver provides the selected function. ### Claim 23 (depends on 1) The display device of claim 1, wherein the display device is configured to: display the image in the sub-display region of the display panel that is disposed in the housing, the image being visible from an outside of the housing via the transparent touch sensor, allow a user external to the housing to select an item from the image by touching a portion of the touch sensor that corresponds to the selected item displayed in the sub-display region, and perform a selected function corresponding to the selected item by actuation of the driver.