# US 8,772,645 B2 · Touch panel and display device including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,772,645 B2 - Document ID: US8772645B2 - Status: Granted - Kind: B2 - Application number: 13/972,487 - Filed: 2013-08-21 - Published: 2013-12-19 - Granted: 2014-07-08 - Earliest claimed: 2011-12-23 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Ji Young Hwang; In-Seok Hwang; Sang Ki Chun; Yong Goo Son - Web page: https://patentgrep.com/patent/US8772645B2 ## CPC - G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)} - G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads} - G06F 3/0412: {Digitisers structurally integrated in a display} - H01H 1/5805: {Connections to printed circuits (for slide switches H01H15/005; for tumbler switches H01H23/006)} - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) ## Abstract The present invention relates to a touch panel, comprising a screen part, a router part, a flexible printed circuit board (FPCB) part, a first pad part comprising two or more router connection regions connecting the screen part and the router part, and a second pad part comprising two or more FPCB connection regions connecting the router part and the flexible printed circuit board (FPCB) part, in which at least some regions of the two or more FPCB connection regions comprise a conductive pattern having opening regions. ## Claims ### Claim 1 A touch panel, comprising: a screen part; a router part; a flexible printed circuit board (FPCB) part; a first pad part comprising two or more router connection regions connecting the screen part and the router part; and a second pad part comprising two or more FPCB connection regions connecting the router part and the flexible printed circuit board (FPCB) part, wherein at least some regions of the two or more FPCB connection regions comprise a conductive pattern having opening regions, wherein the opening regions are provided inside of the FPCB connection regions, and wherein a shape of the opening regions is a closed figure comprising at least one selected from the group consisting of a straight line, a curved line, a wave line and a zigzag line; a polygon; or a circle. ### Claim 2 (depends on 1) The touch panel of claim 1, wherein a ratio of the opening regions in the two or more FPCB connection regions is 10 to 99%. ### Claim 3 (depends on 1) The touch panel of claim 1, wherein at least some regions of the two or more router connection regions comprise a conductive pattern having opening regions. ### Claim 4 (depends on 3) The touch panel of claim 3, wherein a ratio of the opening regions in the two or more router connection regions is 10 to 99%. ### Claim 5 (depends on 1) The touch panel of claim 1, wherein the screen part comprises a first conductive pattern, and the router part and the first pad part comprise second conductive patterns, and at least a part of the second conductive pattern has a line width different from the first conductive pattern. ### Claim 6 (depends on 5) The touch panel of claim 5, wherein a difference in a line width between at least a part of the second conductive pattern and the first conductive pattern is 5 micrometers or more. ### Claim 7 (depends on 5) The touch panel of claim 5, wherein a difference in a line width between at least a part of the second conductive pattern and the first conductive pattern is 15 micrometers or more. ### Claim 8 (depends on 5) The touch panel of claim 5, wherein a difference in a line width between at least a part of the second conductive pattern and the first conductive pattern is 30 micrometers or more. ### Claim 9 (depends on 5) The touch panel of claim 5, wherein a difference in a line width between at least a part of the second conductive pattern and the first conductive pattern is 100 micrometers or less. ### Claim 10 (depends on 1) The touch panel of claim 1, wherein the screen part comprises a first conductive pattern, and the router part and the second pad part comprise third conductive patterns, and at least a part of the third conductive pattern has a line width different from the first conductive pattern. ### Claim 11 (depends on 10) The touch panel of claim 10, wherein a difference in a line width between at least a part of the third conductive pattern and the first conductive pattern is 5 micrometers or more. ### Claim 12 (depends on 10) The touch panel of claim 10, wherein a difference in a line width between at least a part of the third conductive pattern and the first conductive pattern is 15 micrometers or more. ### Claim 13 (depends on 10) The touch panel of claim 10, wherein a difference in a line width between at least a part of the third conductive pattern and the first conductive pattern is 30 micrometers or more. ### Claim 14 (depends on 10) The touch panel of claim 10, wherein a difference in a line width between at least a part of the third conductive pattern and the first conductive pattern is 100 micrometers or less. ### Claim 15 (depends on 1) The touch panel of claim 1, wherein the screen part comprises a first conductive pattern, the router part and the first pad part comprise second conductive patterns, and the second pad part comprises a third conductive pattern, and the first conductive pattern, the second conductive pattern, and the third conductive pattern are formed by performing one printing process. ### Claim 16 (depends on 15) The touch panel of claim 15, wherein the printing process is a reverse offset printing process. ### Claim 17 (depends on 1) The touch panel of claim 1, wherein the screen part comprises a first conductive pattern, the router part and the first pad part comprise second conductive patterns, and the second pad part comprises a third conductive pattern, and the first conductive pattern, the second conductive pattern, and the third conductive pattern each independently contain one kind or more selected from a group consisting of metal, metal oxide, metal nitride, metal oxynitride, and a metal alloy. ### Claim 18 (depends on 1) The touch panel of claim 1, wherein the screen part comprises a first conductive pattern, the router part and the first pad part comprise second conductive patterns, and the second pad part comprises a third conductive pattern, and the first conductive pattern, the second conductive pattern, and the third conductive pattern each independently contain one kind or more selected from a group consisting of Ag, Cu, Cr, Al, Mo, Ni, oxide thereof, nitride thereof, oxynitride thereof, and an alloy thereof. ### Claim 19 (depends on 1) The touch panel of claim 1, further comprising: an anisotropic conductive film (ACF) connecting the FPCB connection region and the flexible printed circuit board (FPCB) part and comprising a conductive ball, wherein the shortest distance between the opening regions in the FPCB connection region or the shortest width of an shielded region is equal to or larger than a maximum size of the conductive ball. ### Claim 20 (depends on 1) A display apparatus comprising the touch panel of claim 1.