Title:
ELECTRONIC UNDERLAY
Document Type and Number:
WIPO Patent Application WO/2014/196390
Kind Code:
A1
Abstract:
Provided is an electronic underlay with which, even if a hand, finger, etc., is laid in a writing trace or a depression portion in a sheet of writing paper, the writing trace, etc., is not sensed. This electronic underlay is placed beneath a sheet of writing paper which is written upon with a writing implement, and comprises: a sheet-shaped light waveguide (W) wherein lattice-shaped cores (2) are sandwiched between a sheet-shaped under-cladding layer (1) and over-cladding layer (3); a light emitting element (4) which is connected to one end face of linear cores (2) which configure the lattice shaped cores (2); and a photoreceptor element (5) which is connected to the other end face of the linear cores (2). The over-cladding layer (3) is covered with a sheet material (S) which is formed from a resin, etc. The sheet material (S) has an elastic modulus set within a range of 1MPa-200GPa, and a thickness set within a range of 5-200μm.
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Inventors:
YOSHIOKA RYOMA (JP)
SHIMIZU YUSUKE (JP)
SHIMIZU YUSUKE (JP)
Application Number:
PCT/JP2014/063787
Publication Date:
December 11, 2014
Filing Date:
May 26, 2014
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G06F3/042; G02B6/122; G02B6/42
Foreign References:
| JP2013101557A | 2013-05-23 | |||
| JPH07319606A | 1995-12-08 | |||
| JP2006172230A | 2006-06-29 | |||
| JPH08234895A | 1996-09-13 |
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
Masahiko Nishifuji (JP)
Masahiko Nishifuji (JP)
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