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

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6831623
APP PUB NO 20010043175A1
SERIAL NO

09091544

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ATTORNEY / AGENT: (SPONSORED)

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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 CORPORATIONTOKYO18957

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yasukawa, Masahiro Chino, JP 45 714

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SHARP KABUSHIKI KAISHA (4)
* 5155612 Liquid crystal display device with light shield 43 1990
* 5426526 Reflection type single crystal silicon substrate liquid crystal display device and system 89 1992
* 5500750 Manufacturing method of reflection type liquid crystal display devices having light shield elements and reflective electrodes formed of same material 112 1994
* 5917563 Liquid crystal display device having an insulation film made of organic material between an additional capacity and a bus line 126 1996
 
SEIKO EPSON CORPORATION (1)
* 5414547 Liquid crystal display device and manufacturing method therefor 131 1993
 
JVC KENWOOD CORPORATION (1)
* 5978056 Reflection-type display apparatus having antireflection films 101 1996
 
U.S. PHILIPS CORPORATION (1)
* 5130829 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
 
SPATLIGHT OF CALIFORNIA, INC. (1)
* 5365355 Light blocking, pixel enhancement and photocurrent reduction in active matrix liquid crystal displays 36 1993
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (1)
* 6087648 Active matrix display device and method of manufacturing the same 90 1998
 
GLOBALFOUNDRIES INC. (1)
5706067 Reflective spatial light modulator array 91 1997
 
PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD. (1)
* 6232939 Liquid crystal display apparatus including scanning circuit having bidirectional shift register stages 56 1998
 
KABUSHIKI KAISHA TOSHIBA (2)
* 4759610 Active matrix display with capacitive light shield 228 1986
* 6239777 Display device 75 1998
 
CASIO COMPUTER CO., LTD. (1)
* 5327001 Thin film transistor array having single light shield layer over transistors and gate and drain lines 228 1993
 
Canon Kabushiki Kaisha (2)
* 5933204 Display device and production method thereof with insulating members between pixel electrodes for smooth surface 53 1996
* 6175397 Liquid crystal display apparatus, a liquid crystal projector using same, and a method of manufacturing the liquid crystal display apparatus 19 1998
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2012/0190,150 DARK CURRENT REDUCTION IN BACK-ILLUMINATED IMAGING SENSORS 4 2012
 
SEIKO EPSON CORPORATION (7)
* 7932974 Liquid crystal panel substrate, liquid crystal panel, and electronic equipment and projection type display device both using the same 0 2007
8107049 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 9 2010
8208101 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
8358396 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 6 2011
8634045 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
8525968 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 5 2012
8749748 Liquid crystal panel substrate, liquid crystal panel, and electronic device and projection display device using the same 0 2013
 
SRI INTERNATIONAL (1)
* 8652937 Methods of fabricating back-illuminated imaging sensors 0 2012
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (10)
* 7161176 Electroluminescence display device having a semiconductor substrate 18 2003
* 2004/0036,071 Semiconductor device and method of fabricating the same 3 2003
7838883 Organic electroluminescent display device 2 2005
* 2005/0156,173 Organic electroluminescent display device 5 2005
7935958 Semiconductor device 2 2005
* 2008/0210,928 Semiconductor Device 18 2005
7723725 Semiconductor device and method of fabricating the same 5 2007
* 2007/0164,290 Semiconductor device and method of fabricating the same 12 2007
8426876 Organic electroluminescent display device 1 2010
8772766 Organic electroluminescent display device 0 2013
 
SAMSUNG DISPLAY CO., LTD. (2)
* 7894026 Thin film transistor array panel and liquid crystal display including light shield 1 2004
* 2005/0110,924 Thin film transistor array panel and liquid crystal display including the same 21 2004
 
LG DISPLAY CO., LTD. (3)
* 7348196 Liquid crystal display and manufacturing method of the same 0 2004
* 8384869 Liquid crystal display device 0 2010
* 2012/0057,116 LIQUID CRYSTAL DISPLAY DEVICE 0 2010
 
Canon Kabushiki Kaisha (1)
* 2007/0279,540 ACTIVE MATRIX SUBSTRATE, LIQUID CRYSTAL DISPLAY, LIQUID CRYSTAL PROJECTOR AND REAR PROJECTION APPARATUS 1 2007
* Cited By Examiner