Invention Grant
- Patent Title: Narrow frame touch input sheet, manufacturing method of same, and conductive sheet used in narrow frame touch input sheet
- Patent Title (中): 窄框触摸输入板,其制造方法和窄框触摸输入板中使用的导电片
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Application No.: US14016584Application Date: 2013-09-03
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Publication No.: US08852852B2Publication Date: 2014-10-07
- Inventor: Yoshihiro Sakata , Takao Hashimoto , Yoshihiro Kai , Yuji Morikawa
- Applicant: Nissha Printing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: Nissha Printing Co., Ltd.
- Current Assignee: Nissha Printing Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Global IP Counselors, LLP
- Priority: JP2009-211002 20090911; JP2009-215087 20090916; JP2009-215088 20090916
- Main IPC: G03F7/20
- IPC: G03F7/20 ; G06F3/044

Abstract:
A method for manufacturing a narrow frame touch input sheet includes forming and stacking transparent conductive films, light-excluding conductive electrode films, and first resist layers sequentially on both surfaces of a transparent base sheet, exposing and developing the first resist layers simultaneously on the both surfaces, etching the transparent and light-excluding conductive electrode films on the both surfaces, and stripping the first resist layers to form a fine wiring circuit pattern with the stacked transparent conductive film and light-excluding conductive electrode film in an outer edge portion on each of the two surfaces. The method further includes forming a second resist layer to cover the fine wiring circuit pattern on each surface, and etching only the light-excluding electrode conductive film layer on which the second resist layer is not formed, to expose a circuit pattern of the transparent conductive film in a central window portion on each surface.
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