Title:
LIGHTING TYPE KEY SHEET
Document Type and Number:
WIPO Patent Application WO/2011/080981
Kind Code:
A1
Abstract:
Disclosed is a key sheet that is integrally provided with a light guiding sheet, and that has a plurality of lighting areas, wherein a technology is provided that does not make light leaks from the borders between the lighting areas tend to occur, and that achieves high durability even in repeated pressing operations. An opening edge at the operation face side of a slit (15a) provided on the light guiding sheet (15) was made to be covered with a blindfolding layer (14). Light leaking from the end face of the light guiding sheet (15), which comprises the slit (15a), can be prevented from radiating outside from the opening edge of the slit (15a) by the blindfolding layer (14). Furthermore, the durability of a base sheet (12) is able to be improved, because a surface sheet (13) that covers the slit (15a) by adhering to the light guiding sheet (15), and a back face covering section (19) are also provided.
Inventors:
YOSHIOKA Toshikazu (10-5, Tabata 5-chome, Kita-k, Tokyo 14, 〒1140014, JP)
吉岡 利和 (〒14 東京都北区田端５－１０－５ ポリマテック株式会社Ｒ＆Ｄセンター内 Tokyo, 〒1140014, JP)
吉岡 利和 (〒14 東京都北区田端５－１０－５ ポリマテック株式会社Ｒ＆Ｄセンター内 Tokyo, 〒1140014, JP)
Application Number:
JP2010/071239
Publication Date:
July 07, 2011
Filing Date:
November 29, 2010
Export Citation:
Assignee:
Polymatech Co. , Ltd. (8-16, Nihonbashihoncho 4-chome Chuo-k, Tokyo 24, 〒1038424, JP)
ポリマテック株式会社 (〒24 東京都中央区日本橋本町４丁目８－１６ Tokyo, 〒1038424, JP)
YOSHIOKA Toshikazu (10-5, Tabata 5-chome, Kita-k, Tokyo 14, 〒1140014, JP)
ポリマテック株式会社 (〒24 東京都中央区日本橋本町４丁目８－１６ Tokyo, 〒1038424, JP)
YOSHIOKA Toshikazu (10-5, Tabata 5-chome, Kita-k, Tokyo 14, 〒1140014, JP)
International Classes:
H01H13/02; H01H13/70
Attorney, Agent or Firm:
OHTAKE Seigo et al. (Dai 4 Matsuzaka Bldg, 33-5 Higashiazabu 2-chome, Minato-k, Tokyo 44, 〒1060044, JP)