Light sensing circuit, backlight control apparatus having the same, and liquid crystal display device having the same
First Claim
1. A light sensing circuit, comprising:
- a first metal oxide semiconductor (MOS)-transistor; and
a second MOS-transistor serially connected to the first MOS-transistor between a first power terminal and a ground terminal,wherein a second power terminal is connected to each gate terminal of the first MOS-transistor and the second MOS-transistor, and an optical amount detecting terminal is connected to a common connection point between a drain terminal of the first MOS-transistor and a source terminal of the second MOS-transistor.
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Accused Products
Abstract
A light sensing circuit capable of enhancing a reliability by lowering a dependency on a temperature change without using a resistor, a backlight control apparatus having the same, and an LCD device having the same. The light sensing circuit includes a first MOS-transistor; and a second MOS-transistor serially connected to the first MOS-transistor between a first power terminal and a ground terminal, in which a second power terminal is connected to each gate terminal of the first MOS-transistor and the second MOS-transistor, and an optical amount detecting terminal is connected to a common connection point between a drain terminal of the first MOS-transistor and a source terminal of the second MOS-transistor.
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Citations
6 Claims
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1. A light sensing circuit, comprising:
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a first metal oxide semiconductor (MOS)-transistor; and a second MOS-transistor serially connected to the first MOS-transistor between a first power terminal and a ground terminal, wherein a second power terminal is connected to each gate terminal of the first MOS-transistor and the second MOS-transistor, and an optical amount detecting terminal is connected to a common connection point between a drain terminal of the first MOS-transistor and a source terminal of the second MOS-transistor. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification