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1. (WO2015045571) INPUT DEVICE

Pub. No.:    WO/2015/045571    International Application No.:    PCT/JP2014/068665
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Jul 15 01:59:59 CEST 2014
IPC: G06F 3/042
G02B 6/122
Applicants: NITTO DENKO CORPORATION
日東電工株式会社
Inventors: SHIMIZU Yusuke
清水 裕介
YOSHIOKA Ryoma
吉岡 良真
Title: INPUT DEVICE
Abstract:
Provided is an input device comprising an optical waveguide that prevents core breakage caused by pressing or movement of a tip input section of an input body. This input device comprises a tetragon sheet-shaped optical waveguide (W) having lattice-shaped cores (2) interposed between a tetragon sheet-shaped underclad layer (1) and an overclad layer (3). A dummy pattern (A) is provided in a section of the lattice-shaped cores (2) surrounded by a linear core (2). The dummy pattern (A) is interposed, together with the cores (2), between the sheet-shaped underclad layer (1) and the overclad layer (3). The input device is configured such that, as a result of the elasticity modulus of the dummy pattern (A) and the core (2) being set to at least the elasticity modulus of the underclad layer (1) and the overclad layer (3), core (2) breakage does not occur even if the tip input section of the input body is pressed or the tip input section is moved in a surface section of the overclad layer (3) corresponding to the lattice-shaped core (2) section.