US 11,941,209 B2
Touch module, preparation method therefor, and display device
Jiuzhen Wang, Beijing (CN); Meizhu Zheng, Beijing (CN); Lupeng Bian, Beijing (CN); Biao Gao, Beijing (CN); Zebang Guo, Beijing (CN); Xiongnan Zhang, Beijing (CN); Boyang Shi, Beijing (CN); Shengxing Zhang, Beijing (CN); Jian Cai, Beijing (CN); and Dalin Xiang, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/630,128
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Apr. 19, 2021, PCT No. PCT/CN2021/088210
§ 371(c)(1), (2) Date Jan. 25, 2022,
PCT Pub. No. WO2021/258827, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 202010587310.3 (CN), filed on Jun. 24, 2020.
Prior Publication US 2022/0261102 A1, Aug. 18, 2022
Int. Cl. G06F 3/044 (2006.01); B32B 27/32 (2006.01); B32B 37/02 (2006.01)
CPC G06F 3/044 (2013.01) [B32B 27/325 (2013.01); B32B 37/02 (2013.01); B32B 2457/208 (2013.01); G06F 2203/04102 (2013.01); G06F 2203/04103 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for preparing a touch module, comprising:
attaching a polarizing function layer to a side of a touch function layer by a first bonding layer;
attaching a cyclo olefin polymer (COP) film layer to another side of the touch function layer by a second bonding layer; and
attaching a third bonding layer to a side, facing away from the second bonding layer, of the COP film layer;
wherein the attaching the polarizing function layer to the side of the touch function layer by the first bonding layer, and the attaching the COP film layer to another side of the touch function layer by the second bonding layer comprises:
directly attaching the first bonding layer on the polarizing function layer first; then directly transferring the touch function layer pre-formed on a rigid base substrate to the first bonding layer by means of transfer printing; and then directly attaching the COP film layer on the touch function layer through the second bonding layer;
or,
directly attaching the second bonding layer on the COP film layer first; then directly transferring the touch function layer pre-formed on a rigid base substrate to the second bonding layer by means of transfer printing; and then directly attaching the polarizing function layer on the touch function layer through the first bonding layer;
wherein before the transferring the touch function layer pre-formed on the rigid base substrate to the first bonding layer by means of transfer printing, the method further comprises: removing a preset area of the polarizing function layer; wherein after the touch function layer is transferred to the first bonding layer, neither the polarizing function layer nor the first bonding layer overlaps with a binding area of the touch function layer in a direction perpendicular to the touch function layer; and after the transferring the touch function layer pre-formed on the rigid base substrate to the first bonding layer by means of transfer printing, the method further comprises: binding a printed circuit board in the binding area of the touch function layer; and
wherein before the attaching the polarizing function layer on the touch function layer through the first bonding layer, the method further comprising: attaching the first bonding layer on the polarizing function layer; removing a preset area of the polarizing function layer and a preset area of the first bonding layer; wherein after the attaching the polarizing function layer on the touch function layer, neither the polarizing function layer nor the first bonding layer overlaps with a binding area of the touch function layer in a direction perpendicular to the touch function layer; and binding a printed circuit board in the binding area of the touch function layer.