US Patent No: 6,831,623

Number of patents in Portfolio can not be more than 2000

Liquid crystal panel substrate, liquid crystal panel, and electronic equipment and projection type display device both using the same

ALSO PUBLISHED AS: 20010043175

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Abstract

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The present invention is a liquid crystal panel substrate that comprises: pixel units each having a pixel electrode, to be used as a reflective electrode and arranged in a matrix pattern on a substrate, and a switching element controlling a voltage applied to the pixel electrode; wherein between the pixel electrode and a conductive layer forming a terminal electrode of the switching element, a contact hole is provided for connecting the pixel electrode and the terminal electrode. A light-shielding layer, having an opening surrounding the portion in which the contact hole is formed, and having no opening in regions between a plurality of adjacent pixel electrodes, is formed between the pixel electrode and the conductive layer. Harmful effects due to light leaking through a space between the pixel electrodes can thereby be prevented.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SEIKO EPSON CORPORATIONTOKYO19208

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yasukawa, Masahiro Suwa, JP 82 559

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SHARP KABUSHIKI KAISHA (4)
5,155,612 Liquid crystal display device with light shield 41 1990
5,426,526 Reflection type single crystal silicon substrate liquid crystal display device and system 88 1992
5,500,750 Manufacturing method of reflection type liquid crystal display devices having light shield elements and reflective electrodes formed of same material 111 1994
5,917,563 Liquid crystal display device having an insulation film made of organic material between an additional capacity and a bus line 110 1996
 
CANON KABUSHIKI KAISHA (2)
5,933,204 Display device and production method thereof with insulating members between pixel electrodes for smooth surface 52 1996
6,175,397 Liquid crystal display apparatus, a liquid crystal projector using same, and a method of manufacturing the liquid crystal display apparatus 19 1998
 
KABUSHIKI KAISHA TOSHIBA (2)
4,759,610 Active matrix display with capacitive light shield 209 1986
6,239,777 Display device 50 1998
 
CASIO COMPUTER CO., LTD. (1)
5,327,001 Thin film transistor array having single light shield layer over transistors and gate and drain lines 225 1993
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,706,067 Reflective spatial light modulator array 90 1997
 
JVC KENWOOD CORPORATION (1)
5,978,056 Reflection-type display apparatus having antireflection films 95 1996
 
PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD. (1)
6,232,939 Liquid crystal display apparatus including scanning circuit having bidirectional shift register stages 43 1998
 
SEIKO EPSON CORPORATION (1)
5,414,547 Liquid crystal display device and manufacturing method therefor 129 1993
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (1)
6,087,648 Active matrix display device and method of manufacturing the same 82 1998
 
SPATLIGHT OF CALIFORNIA, INC. (1)
5,365,355 Light blocking, pixel enhancement and photocurrent reduction in active matrix liquid crystal displays 36 1993
 
U.S. Philips Corporation (1)
5,130,829 Active matrix liquid crystal display devices having a metal light shield for each switching device electrically connected to an adjacent row address conductor 83 1991

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SEIKO EPSON CORPORATION (7)
7,932,974 Liquid crystal panel substrate, liquid crystal panel, and electronic equipment and projection type display device both using the same 0 2007
8,107,049 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 6 2010
8,208,101 Liquid crystal panel substrate with light-shielding film in a periphery region, liquid crystal panel, and electronic equipment and projection type display device both using the same 1 2011
8,358,396 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 3 2011
8,634,045 Liquid crystal panel substrate with light-shielding film in a pixel region, liquid crystal panel, and electronic equipment and projection type display device both using the same to reduce light leakage 0 2012
8,525,968 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 2 2012
8,749,748 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 0 2013
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (6)
7,161,176 Electroluminescence display device having a semiconductor substrate 15 2003
7,838,883 Organic electroluminescent display device 0 2005
7,935,958 Semiconductor device 2 2005
7,723,725 Semiconductor device and method of fabricating the same 5 2007
8,426,876 Organic electroluminescent display device 0 2010
8,772,766 Organic electroluminescent display device 0 2013
 
LG DISPLAY CO., LTD. (2)
7,348,196 Liquid crystal display and manufacturing method of the same 0 2004
8,384,869 Liquid crystal display device 0 2010
 
SAMSUNG DISPLAY CO., LTD. (1)
7,894,026 Thin film transistor array panel and liquid crystal display including light shield 1 2004
 
SRI INTERNATIONAL (1)
8,652,937 Methods of fabricating back-illuminated imaging sensors 0 2012

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Jun 14, 2016
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