US Patent No: 5,952,991

Number of patents in Portfolio can not be more than 2000

Liquid crystal display

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Abstract

A liquid crystal display apparatus includes systems of voltage applying devices for applying voltages to a liquid crystal and a controlling device for switching among these systems. The systems of voltage applying devices each have at least one non-linear switching element, and the controlling device has a memory portion for storing the switched state. With such a construction, electric power loss caused by one signal line having a relatively high frequency can be avoided by using another signal line having a relatively low frequency, thereby allowing a white, black, or gradation display with reduced power consumption.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KABUSHIKI KAISHA TOSHIBATOKYO36337

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akiyama, Masahiko Tokyo, JP 58 1118

Cited Art

Patent Info (Count) # Cites Year
 
FUJITSU LIMITED (1)
5,515,072 High quality active matrix-type display device 9 1995
 
JAPAN DISPLAY CENTRAL INC. (1)
5,712,652 Liquid crystal display device 152 1996
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (1)
5,534,884 Electro-optical device system and method of driving an electro-optical device 43 1994
 
SHARP KABUSHIKI KAISHA (1)
5,610,627 Clocking method and apparatus for display device with calculation operation 8 1994

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SANYO ELECTRIC CO., LTD. (24)
7,019,726 Power consumption of display apparatus during still image display mode 3 2000
7,095,389 Active matrix display device 1 2001
7,081,875 Display device and its driving method 2 2001
7,019,727 Display device 1 2001
7,019,738 Display device and its control method 2 2001
6,853,371 Display device 5 2001
6,825,834 Active matrix display device 3 2001
6,671,023 Active matrix display device 0 2001
7,173,589 Display device 4 2002
7,123,233 Display device 1 2002
7,038,650 Display device 1 2002
7,027,026 Display device 2 2002
6,885,359 Display device with selective rewriting function 1 2002
6,873,321 Display device with two-level image representation 2 2002
7,136,057 Display device 2 2002
6,950,080 Display device 3 2002
6,803,896 Display device 3 2002
6,956,553 Active matrix display device 6 2002
7,209,131 Display and method of controlling the same 2 2002
7,030,871 Active matrix display device 2 2002
7,432,898 Active matrix display device 0 2005
7,518,571 Display device 0 2005
7,583,259 Power consumption of display apparatus during still image display mode 0 2006
7,808,495 Display device and its control method 1 2006
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (24)
7,057,598 Pulse output circuit, shift register and display device 16 2002
6,928,136 Pulse output circuit, shift register, and display device 18 2002
6,958,750 Light emitting device 19 2002
7,068,076 Semiconductor device and display device 12 2002
7,218,349 Semiconductor device 19 2002
7,151,278 Pulse output circuit, shift register, and display device 8 2003
7,202,863 Semiconductor device, and display device and electronic device utilizing the same 9 2003
7,084,668 Semiconductor device 2 2004
7,091,749 Semiconductor device 13 2004
7,649,516 Light emitting device 0 2005
7,586,478 Semiconductor device 10 2005
7,394,102 Pulse output circuit, shift register, and display device 1 2006
7,403,038 Semiconductor device and display device 0 2006
7,710,384 Pulse output circuit, shift register and display device 5 2006
RE41215 Semiconductor device 3 2006
7,362,139 Semiconductor device 7 2006
7,786,985 Semiconductor device, and display device and electronic device utilizing the same 4 2007
RE43401 Semiconductor device 2 2009
7,903,079 Semiconductor device 3 2009
8,264,445 Pulse output circuit, shift register and display device 0 2009
8,044,906 Semiconductor device, and display device and electronic device utilizing the same 3 2010
8,059,078 Semiconductor device, and display device and electronic device utilizing the same 2 2010
8,284,151 Semiconductor device 1 2011
8,456,402 Semiconductor device, and display device and electronic device utilizing the same 0 2011
 
PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD. (5)
7,061,456 Image display method and image display apparatus 1 2001
6,771,241 Active matrix type display device 3 2001
7,301,521 Active matrix type display device 2 2004
7,710,376 Display and method of driving same 0 2006
8,164,550 Liquid crystal display device 0 2007
 
INTEL CORPORATION (3)
6,731,272 Pseudo static memory cell for digital light modulator 10 2001
6,731,306 Display panel 6 2001
7,396,692 Method for increasing ferroelectric characteristics of polymer memory cells 1 2003
 
CHIMEI INNOLUX CORPORATION (2)
6,937,248 Pixel array with indirectly associated memory 2 2002
7,030,866 Pixel structure of a display 0 2003
 
OMNIVISION TECHNOLOGIES, INC. (2)
6,980,188 Display with multiplexed pixels 8 2000
8,344,980 Display with multiplexed pixels and driving methods 0 2008
 
SAMSUNG DISPLAY CO., LTD. (2)
6,791,522 Triodic rectifier switch 4 2001
6,670,649 Triodic rectifier switch 1 2001
 
AU OPTRONICS CORP. (1)
6,771,247 Display and method of driving display 18 2001
 
CANON KABUSHIKI KAISHA (1)
6,496,170 Liquid crystal apparatus 23 1999
 
FUJI XEROX CO., LTD. (1)
6,690,366 Display apparatus 4 2000
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (1)
6,900,786 Display device 1 1999
 
NEC CORPORATION (1)
7,761,120 Power-saving driving method of a mobile phone 2 2006
 
SAMSUNG ELECTRONICS CO., LTD. (1)
7,345,712 Display apparatus 1 2005
 
SEIKO EPSON CORPORATION (1)
7,167,152 Optoelectronic-device substrate, method for driving same, digitally-driven liquid-crystal-display, electronic apparatus, and projector 0 2003
 
SHARP KABUSHIKI KAISHA (1)
6,937,222 Display, portable device, and substrate 18 2002
 
SONY CORPORATION (1)
7,847,775 Electro-optical device, method of driving electro-optical device, and electronic apparatus 1 2006
 
THOMSON LICENSING (1)
7,508,367 Drive circuit for improved brightness control in liquid crystal displays and method therefor 0 2001
 
TPO HONG KONG HOLDING LIMITED (1)
6,693,614 LCD device 14 2001
 
UNIVERSITY, KENT STATE (1)
6,320,563 Dual frequency cholesteric display and drive scheme 12 1999
 
VIDEOCON GLOBAL LIMITED (1)
6,678,834 Apparatus and method for a personal computer system providing non-distracting video power management 23 1999
 
WISTRON CORPORATION (1)
6,115,019 Register pixel for liquid crystal displays 19 1998