# US 2019/0317618 A1 · Curved touch module structure and method for laminating the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0317618 A1 - Document ID: US20190317618A1 - Status: Published application - Kind: A1 - Application number: 16/002,390 - Filed: 2018-06-07 - Published: 2019-10-17 - Earliest claimed: 2018-04-13 - Assignees: Interface Technology (ChengDu) Co., Ltd.; Interface Optoelectronics (Shenzhen) Co., Ltd.; General Interface Solution Limited - Applicants: Interface Technology (Chengdu) Co., Ltd.; Interface Optoelectronics (Shenzhen) Co., Ltd.; General Interface Solution Limited - Inventors: PO CHING LIN - Web page: https://patentgrep.com/patent/US20190317618A1 ## CPC - B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - B32B 3/263: {characterised by a layer having non-uniform thickness} - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 17/06: comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} - B32B 27/06: as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)} - B32B 27/08: of synthetic resin - B32B 27/36: comprising polyesters - B32B 27/365: {comprising polycarbonates} - B32B 37/06: characterised by the heating method - B32B 37/12: characterised by using adhesives - B32B 37/144: {using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding (constructional features for tensioning B32B38/1825)} - G06F 3/0412: {Digitisers structurally integrated in a display} - H04M 1/0266: {for a display module assembly} - B32B 2037/1223: {film-shaped} - B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer - B32B 2255/20: Inorganic coating - B32B 2255/205: Metallic coating - B32B 2255/26: Polymeric coating - B32B 2307/202: Conductive - B32B 2307/412: Transparent - B32B 2307/706: Anisotropic - B32B 2457/208: Touch screens - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - H04M 2250/22: including a touch pad, a touch sensor or a touch detector - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A curved touch module structure and a method for laminating the same, which are the theremoplastic technologies, are used to solve the problem with wrinkles at stress-accumulated positions easily caused by a laminated material during a process of laminating a curved surface. The internal curved surface of an appearance-protecting layer has a planar structure whose position corresponds to the bonding area of a touch element layer. When the touch element layer is theremoplastically laminated to the curved surface of the appearance-protecting layer, the first bonding pads of the bonding area are formed on the planar structure. As a result, when a rear-end process for hot pressing and bonding is performed, a bonding platform needs to be designed according to the shape and curvature of products without modifying the other existing elements, thereby increasing the fabrication yield and reducing the production cost. ## Claims ### Claim 1 A curved touch module structure comprising: a touch element layer including a display area and a bonding area, the display area has a plurality of conductive traces, and the bonding area has a plurality of first bonding pads electrically connected to the plurality of conductive traces; an appearance-protecting layer having an external curved surface and an internal curved surface separating from the external curved surface, and the internal curved surface includes a planar structure; and an adhesive layer arranged between the touch element layer and the appearance-protecting layer. ### Claim 2 (depends on 1) The curved touch module structure according to claim 1, wherein the touch element layer is thermoplastically laminated to the internal curved surface to arrange the plurality of first bonding pads on the planar structure. ### Claim 3 (depends on 1) The curved touch module structure according to claim 1, further comprising a soft touch module that faces the touch element layer, and a surface of the soft touch module corresponding to the plurality of first bonding pads is provided with a plurality of second bonding pads thereon. ### Claim 4 (depends on 3) The curved touch module structure according to claim 3, further comprising an anisotropic conductive film arranged between the plurality of first bonding pads and the plurality of second bonding pads. ### Claim 5 (depends on 1) The curved touch module structure according to claim 1, wherein a surface of the bonding area is parallel to the planar structure. ### Claim 6 (depends on 1) The curved touch module structure according to claim 1, wherein a surface of the bonding area is nonparallel to the planar structure. ### Claim 7 A method for laminating a curved touch module structure comprising: forming a touch element layer that comprises a display area and a bonding area, the display area has a plurality of conductive traces, and the bonding area has a plurality of first bonding pads electrically connected to the conductive traces; providing an appearance-protecting layer that has an external curved surface and an internal curved surface separating from the external curved surface, and the internal curved surface includes a planar structure; and thermoplastically laminating the touch element layer to the internal curved surface of the appearance-protecting layer to arrange the plurality of first bonding pads on the planar structure. ### Claim 8 (depends on 7) The method for laminating the curved touch module structure according to claim 7, wherein in the step of laminating the touch element layer to the appearance-protecting layer, an adhesive layer is formed between the touch element layer and the appearance-protecting layer due to a thermoplastic behavior or using an adhesive. ### Claim 9 (depends on 7) The method for laminating the curved touch module structure according to claim 7, further comprising a step of using an anisotropic conductive film to bond the touch element layer to a soft touch module and electrically connecting the plurality of first bonding pads to a plurality of second bonding pads that correspond to the soft touch module. ### Claim 10 (depends on 9) The method for laminating the curved touch module structure according to claim 9, wherein in the step of bonding the touch element layer to the soft touch module, a thermal head hot presses the touch element layer, the appearance-protecting layer, the anisotropic conductive film, and the soft touch module on a hot-pressing jig.