Title:
COVER GLASS FOR SOLID IMAGE PICKUP DEVICE AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2006/041074
Kind Code:
A1
Abstract:
Cover glass (10) for solid image pickup device comprising a flat glass plate made of an inorganic oxide glass and, superimposed on the front and back, viewed in the direction of plate thickness, thereof, first translucent plane (11a) and second translucent plane (11b), wherein the first translucent plane (11a) is provided with thin film (20), and wherein an unevenness is provided at extreme edge (22) of the thin film (20) positioned at an outer edge on the first translucent plane (11a) of the flat glass plate, the unevenness having projection dimension (L) ranging from 0.5 to 50 μm, the projection dimension (L) defined as extending from, on a plane parallel to the first translucent plane (11a), the most recessed position to the most protrudent position. Such a cover glass is produced through a process comprising the steps of melting a glass raw material mixture in a heat resistant vessel, molding the thus molten glass into a plate glass, providing the plate glass with a thin film and fracturing the plate glass with the thin film into small glass pieces.
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Inventors:
NAKAHORI HIROAKI (JP)
OKAWA DAISUKE (JP)
YODOGAWA MASAHIRO (JP)
OKAWA DAISUKE (JP)
YODOGAWA MASAHIRO (JP)
Application Number:
PCT/JP2005/018758
Publication Date:
April 20, 2006
Filing Date:
October 12, 2005
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
NAKAHORI HIROAKI (JP)
OKAWA DAISUKE (JP)
YODOGAWA MASAHIRO (JP)
NAKAHORI HIROAKI (JP)
OKAWA DAISUKE (JP)
YODOGAWA MASAHIRO (JP)
International Classes:
H01L27/14; C03C3/091; C03C3/093
Foreign References:
| JP2004221541A | 2004-08-05 | |||
| JP2001102470A | 2001-04-13 | |||
| JPH09283731A | 1997-10-31 | |||
| JPH05175472A | 1993-07-13 |
Attorney, Agent or Firm:
Ehara, Syogo (15-26 Edobori 1-chome, Nishi-k, Osaka-shi Osaka, JP)
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