US Patent No: 7,675,501
Number of patents in Portfolio can not be more than 2000
Liquid crystal display apparatus with light sensor
Stats
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Mar 9, 2010
Issued date -
Dec 16, 2004
filing date -
11/013,568
serial no -
In Force
status
Importance
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Abstract
In a display apparatus, a light generating part generates a first light in response to a driving signal, and a first driving part outputs a panel driving signal. A display panel receives the first light from the light generating part and a second light externally provided, and displays an image in response to the panel driving signal. A light sensing part is disposed in the display panel so as to output a sensing signal corresponding a light amount of the second light. A second driving part compares the sensing signal with a predetermined reference value, and outputs a driving signal in accordance with the compared result. Thus, the display apparatus may reduce an electrical power consumed to drive the display apparatus.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,760,760 Intelligent LCD brightness control system | 100 | 1995 | |
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| 5,769,384 Low differential light level photoreceptors | 22 | 1996 | |
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| 5,786,876 Active matrix type liquid crystal display system | 102 | 1995 | |
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| 7,002,547 Backlight control device for liquid crystal display | 16 | 2003 | |
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| 2003/0020,969 Driving method of a semiconductor device | 11 | 2002 | |
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| 7,211,880 Photoelectric conversion apparatus and manufacturing method of same | 3 | 2003 | |
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| 6,410,961 Thin film semiconductor device and display device | 8 | 1998 | |
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| 4,868,459 Method of and circuit for brightness and temperature-dependent control of an LCD illuminator | 27 | 1987 | |
Patent Citation Ranking
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