US Patent No: 8,242,699

Number of patents in Portfolio can not be more than 2000

Light emitting device and production system of the same

ALSO PUBLISHED AS: 20120120126

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Importance

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Abstract

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To provide a light emitting device without nonuniformity of luminance, a correcting circuit for correcting a video signal supplied to each pixel to a light emitting device. The correcting circuit is stored with data of a dispersion of a characteristic of a driving TFT among pixels and data of a change over time of luminance of a light emitting element. Further, by correcting a video signal inputted to the light emitting device in conformity with a characteristic of the driving TFT of each pixel and a degree of a deterioration of the light emitting element based on the over-described two data, nonuniformity of luminance caused by a deterioration of an electroluminescent layer and nonuniformity of luminance caused by dispersion of a characteristic of the driving TFT are restrained.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SEMICONDUCTOR ENERGY LABORATORY CO., LTD.KANAGAWA-KEN8925

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akiba, Mai Kanagawa, JP 161 1467
Anzai, Aya Kanagawa, JP 252 979
Kimura, Hajime Kanagawa, JP 1014 6726
Yamazaki, Shunpei Setagaya, JP 7374 89381
Yamazaki, Yu Tokyo, JP 187 888

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (26)
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6,489,952 Active matrix type semiconductor display device 58 1999
6,512,469 Serial-to-parallel conversion circuit, and semiconductor display device employing the same 13 2000
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7,088,052 Light emitting device and method of driving the same 20 2002
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6,750,792 Serial-to-parallel conversion circuit, and semiconductor display device employing the same 16 2002
6,911,781 Light emitting device and production system of the same 37 2003
7,198,967 Active matrix type semiconductor display device 9 2003
7,049,983 Serial-to-parallel conversion circuit, and semiconductor display device employing the same 15 2004
7,456,579 Light emitting device and production system of the same 12 2004
7,586,505 Light emitting device and electronic apparatus using the same 4 2005
7,683,913 Display device and driving method thereof 2 2006
7,986,287 Display device and method of driving the same 2 2006
2007/0166,860 Active matrix type semicondcutor display device 8 2007
7,863,824 Light emitting device and production system of the same 5 2008
8,102,126 Light emitting device and production system of the same 4 2010
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (3)
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CAMBRIDGE DISPLAY TECHNOLOGY LIMITED (2)
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KABUSHIKI KAISHA TOSHIBA (2)
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SEIKO EPSON CORPORATION (2)
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SONY CORPORATION (2)
6,317,138 Video display device 14 1999
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TRANSPACIFIC INFINITY, LLC (2)
6,229,508 Active matrix light emitting diode pixel structure and concomitant method 215 1998
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GLOBAL OLED TECHNOLOGY LLC (1)
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GOLD CHARM LIMITED (1)
6,246,180 Organic el display device having an improved image quality 154 2000
 
MOTOROLA SOLUTIONS, INC. (1)
6,060,840 Method and control circuit for controlling an emission current in a field emission display 21 1999
 
RAMNARAYAN, KAL (1)
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SANYO ELECTRIC CO., LTD. (1)
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SEIKO INSTRUMENTS INC. (1)
6,404,139 Circuit for driving a light emitting elements display device 11 2000
 
SHARP KABUSHIKI KAISHA (1)
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STMICROELECTRONICS S.R.L. (1)
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TRANSPACIFIC EXCHANGE, LLC (1)
6,188,454 Compensation for edge effects and cell gap variation in tiled flat-panel, liquid crystal displays 22 2000

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (1)
8,569,958 Light emitting device and production system of the same 0 2012

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