# US 2014/0150253 A1 · Touch screen and manufacturing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150253 A1 - Document ID: US20140150253A1 - Status: Published application - Kind: A1 - Application number: 14/090,391 - Filed: 2013-11-26 - Published: 2014-06-05 - Earliest claimed: 2009-09-30 - Assignees: Beijing Boe Optoelectronics Technology Co., Ltd. - Applicants: Beijing Boe Optoelectronics Technology Co., Ltd. - Inventors: Yun Sik IM; Yao YU - Web page: https://patentgrep.com/patent/US20140150253A1 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G02F 1/1339: Gaskets; Spacers; Sealing of cells - G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer} - G06F 3/045: using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact - Y10T 29/49126: Assembling bases - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A touch screen comprises a first substrate, a second substrate and a third substrate sequentially stacked. A first sensing layer is provided on a first surface of the second substrate opposing to the third substrate, and a second sensing layer is provided on a surface of the third substrate opposing to the second substrate. The second substrate provided with the first sensing layer and the third substrate provided with the second sensing layer constitute a touch unit for sensing a touch signal, and the second substrate and the first substrate constitute a display unit for displaying. ## Claims ### Claim 1 A method of manufacturing a touch screen comprising: preparing a first substrate, a second substrate and a third substrate, respectively, providing a first sensing layer on a first surface of the second substrate, and providing a second sensing layer on the third substrate; and sequentially stacking and assembling the first substrate, the second substrate and the third substrate so that the second substrate provided with the first sensing layer and the third substrate provided with the second sensing layer constitute a touch unit for sensing a touch signal, and the second substrate and the first substrate constitute a display unit for displaying. ### Claim 2 (depends on 1) The method of manufacturing the touch screen according to claim 1, wherein in forming the second substrate and the third substrate, the first sensing layer is formed on a first surface of a base substrate for forming the second substrate, the second sensing layer is formed on another base substrate for forming the third substrate, and wherein the first sensing layer and the second sensing layer are capacitive type sensing layers, and the touch unit constituted by the first sensing layer and the second sensing layer is a capacitive type touch unit. ### Claim 3 (depends on 1) The method of manufacturing the touch screen according to claim 1, wherein in forming the second substrate and the third substrate, the first sensing layer is formed on a first surface of a base substrate for forming the second substrate, the second sensing layer is formed on another base substrate for forming the third substrate, and wherein the first sensing layer and the second sensing layer are resistance type sensing layers, and the touch unit constituted by the first sensing layer and the second sensing layer is a resistance type touch unit. ### Claim 4 (depends on 3) The method of manufacturing the touch screen according to claim 3, wherein in forming the second substrate and the third substrate, a transparent conductive layer is coated on at least one of the first sensing layer and the second sensing layer and patterned to form a touch electrode for transferring the touch signal and a voltage application wire connected with the touch electrode; and wherein conductive adhesive strips are respectively provided on two opposing edges of the at least one of the first sensing layer and the second sensing layer, and the conductive adhesive strip are connected with the voltage application wire. ### Claim 5 (depends on 4) The method of manufacturing the touch screen according to claim 4, wherein the touch electrode comprises a first touch electrode provided in the first sensing layer and a second touch electrode provided in the second sensing layer; and wherein, in forming the first substrate, a substrate touch electrode connected with an external controlling circuit is provided on the first substrate, the substrate touch electrode is provided to oppose to the second touch electrode, and both the substrate touch electrode and the second touch electrode are provided within a width range of sealant for sealing the first substrate and the second substrate. ### Claim 6 (depends on 5) The method of manufacturing the touch screen according to claim 5, wherein in assembling the first substrate, the second substrate and the third substrate, the first substrate and the second substrate are sealed by the sealant, the first touch electrode is electrically connected with the second touch electrode through conductive adhesive, and the second touch electrode is electrically connected with the substrate touch electrode through the sealant. ### Claim 7 (depends on 1) The method of manufacturing the touch screen according to claim 1, wherein a color filter structure is provided on a second surface of the second substrate opposing to the first substrate. ### Claim 8 (depends on 7) The method of manufacturing the touch screen according to claim 7, wherein the first substrate is an array substrate, the display unit constituted by the first substrate and the second substrate is a liquid crystal display unit.