# US 10,768,742 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,768,742 B2 - Document ID: US10768742B2 - Status: Granted - Kind: B2 - Application number: 16/169,927 - Filed: 2018-10-24 - Published: 2019-05-02 - Granted: 2020-09-08 - Earliest claimed: 2017-10-27 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Ruda Rhe; SuChang An - Web page: https://patentgrep.com/patent/US10768742B2 ## CPC - G06F 1/1626: {with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]} - G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/044: by capacitive means - 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} - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 77/111: {Flexible substrates} - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - H10K 59/40: OLEDs integrated with touch screens - H10K 2102/311: {Flexible OLED} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Embodiments of the present disclosure relate to a display device, and more particularly, to a display device in which the number of data link lines or touch lines can be increased in a bent area or a folded area of a display panel. According to the embodiments of the present disclosure, it is possible to provide a display device in which the number of data link lines or touch lines can be increased in a bent area or a folded area of a display panel. ## Claims ### Claim 1 A display device comprising: a substrate having a display area and a non-display area, the non-display area including a bendable area with a first layer and a second layer on the first layer; a plurality of data lines in the display area; a plurality of data link lines in the bendable area of the non-display area and electrically connected to the plurality of data lines, the plurality of data link lines including: a first data link line disposed on the first layer; and a second data link line disposed on the second layer; an encapsulation layer on the substrate; a touch buffer layer on the encapsulation layer; a touch sensor structure on the touch buffer layer, the touch sensor structure comprising one or more bridge patterns on the touch buffer layer, a touch insulating film on the one or more bridge patterns, and a plurality of touch electrodes on the touch insulating film; a plurality of touch lines in the non-display area and electrically connected to the plurality of touch electrodes, at least one touch line of the plurality of touch lines and the second data link line being made of a conductive material; a data driving circuit configured to drive the plurality of data lines; and a touch driving circuit configured to drive the plurality of touch lines, wherein, in the bendable area, at least a part of the plurality of data link lines are on a different layer from the plurality of touch lines, and wherein the touch buffer layer is disposed directly on the encapsulation layer. ### Claim 2 (depends on 1) The display device of claim 1, wherein the encapsulation layer comprises at least one inorganic layer and one organic layer. ### Claim 3 (depends on 1) The display device of claim 1, wherein at least one data link line of the plurality of data link lines is disposed on a same layer as at least one touch line of the plurality of touch lines, the at least one data link line and the at least one touch line being made of a same metal. ### Claim 4 (depends on 1) The display device of claim 1, wherein the first data link line and the second data link line are electrically coupled to each other by a via hole. ### Claim 5 (depends on 1) The display device of claim 1, further comprising: a third data link line positioned on a third layer, the third layer is on the second layer, and the third data link line overlaps the second data link line in the second layer. ### Claim 6 (depends on 5) The display device of claim 5, wherein the second data link line and the third data link line are electrically connected to each other by a via hole. ### Claim 7 (depends on 1) The display device of claim 1, wherein at least some of the data link lines of the plurality of data link lines have a zigzag pattern in the bendable area. ### Claim 8 (depends on 1) The display device of claim 1, wherein the bendable area is a portion of the substrate. ### Claim 9 (depends on 1) The display device of claim 1, wherein each touch electrode of the plurality of touch electrodes is a mesh type touch electrode. ### Claim 10 (depends on 9) The display device of claim 9, wherein the mesh type touch electrode has a plurality of open areas. ### Claim 11 (depends on 10) The display device of claim 10, wherein each open area of the plurality of open areas corresponds to a light-emitting area of at least one sub-pixel. ### Claim 12 (depends on 1) The display device of claim 1, wherein each touch electrode of the plurality of touch electrodes is arranged to overlap a bank of a respective at least one sub-pixel. ### Claim 13 (depends on 1) The display device of claim 1, wherein a first group of touch lines of the plurality of touch lines passes through a second bendable area of the substrate, and the first group of touch lines that pass through the second bendable area of the substrate is arranged in two or more layers. ### Claim 14 (depends on 13) The display device of claim 13, wherein each touch line of the first group of touch lines that passes through the second bendable area has a zigzag pattern in the second bendable area. ### Claim 15 (depends on 14) The display device of claim 14, wherein a bent angle (θ) of the zigzag pattern is variable to a point where a bent portion of a respective touch line of the plurality of touch lines closest to the display area of the substrate abuts the display area of the substrate. ### Claim 16 (depends on 1) The display device of claim 1, wherein the first layer is a first planarization layer on the substrate in the first bendable area, and the second layer is a second planarization layer on the first planarization layer. ### Claim 17 (depends on 16) The display device of claim 16, wherein a number of the plurality of touch lines are arranged on the second planarization layer. ### Claim 18 (depends on 16) The display device of claim 16, wherein a number of the plurality of data link lines are arranged on the second planarization layer. ### Claim 19 (depends on 16) The display device of claim 16, wherein the second planarization layer has a plurality of contact holes and the first planarization layer is positioned between the contact holes. ### Claim 20 (depends on 19) The display device of claim 19, wherein a first contact hole of the plurality of contact holes is disposed in a pad area and first respective and second respective data link lines of the plurality of data link lines are disposed in the pad area, the first respective data link is electrically connected to the second respective data link line by the first contact hole in the pad area. ### Claim 21 (depends on 19) The display device of claim 19, wherein a respective touch line of the plurality of touch lines extends from the display area to the pad area, the touch line is electrically connected to a third respective data link line by a second contact hole of the plurality of contact holes. ### Claim 22 (depends on 21) The display device of claim 21, further comprising at least one thin film transistor having a gate electrode, a source electrode, and a drain electrode, the source electrode being formed of a first metal, and the drain electrode being formed of a second metal, wherein the first data link line is made of the first metal or the second metal and formed on a same layer as the source electrode or the drain electrode. ### Claim 23 (depends on 21) The display device of claim 21, wherein the second contact hole passes through the touch buffer layer, the touch insulating film and the second planarization layer to electrically connect the respective touch line to the third respective data link line. ### Claim 24 A display device comprising: a substrate having a display area and a non-display area; a plurality of data lines in the display area; a plurality of data link lines in the non-display area that are electrically connected to the plurality of data lines; an encapsulation layer on the substrate; a touch buffer layer on the encapsulation layer; a touch sensor structure on the touch buffer layer, the touch sensor structure comprising: one or more bridge patterns on the touch buffer layer, a touch insulating film on the one or more bridge patterns, and a plurality of touch electrodes on the touch insulating film; a plurality of touch lines electrically connected to the plurality of touch electrodes, the touch lines are positioned in two or more layers in a bendable area; a data driving circuit configured to drive the plurality of data lines; and a touch driving circuit configured to drive the plurality of touch lines, wherein the touch buffer layer extends along a side surface of the encapsulation layer. ### Claim 25 (depends on 24) The display device of claim 24, wherein the plurality of touch lines is arranged in the display area. ### Claim 26 (depends on 24) The display device of claim 24, wherein a first group of the plurality of touch lines have a zigzag pattern in a second bendable area. ### Claim 27 (depends on 26) The display device of claim 26, wherein a bent angle of the zigzag pattern is variable to a range where a bent portion of a touch line closest to the display area of the substrate abuts the display area of the substrate. ### Claim 28 A display device comprising: a substrate having a display area and a non-display area, the non-display area including a bendable area; a plurality of data lines in the display area; a plurality of data link lines in the non-display area and electrically connected to the plurality of data lines a plurality of data link lines in the bendable area of the non-display area and electrically connected to the plurality of data lines; an encapsulation layer on the substrate; a touch buffer layer on the encapsulation layer; a plurality of touch lines in the non-display area; a data driving circuit configured to drive the plurality of data lines; and a touch driving circuit configured to drive the plurality of touch lines, wherein, in the bendable area, at least a part of the plurality of data link lines is on a different layer from the plurality of touch lines, and wherein the touch buffer is disposed along a side surface of the encapsulation layer. ### Claim 29 (depends on 28) The display device of claim 28, wherein the second data link line is a stress resistant data link line having a zigzag pattern in the bendable area and being coupled to the first data link line by a via hole. ### Claim 30 (depends on 28) The displace device of claim 28 wherein the bendable area includes a first layer and a second layer disposed on the first layer, the plurality of data link lines including a first data link line disposed on the first layer and a second data link line disposed on the second layer.