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US 2010/0149086 A1Published application
Liquid crystal display device
AssigneeLG Display Co., Ltd.
InventorJin Taek Choi
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Abstract
An LCD device of an edge type is disclosed. The LCD device analyzes brightness of an input image in blocks using an algorithm and generates lamp drive signals corresponding to the analyzed block brightnesses. Also, the LCD device applied the lamp drive signals to a plurality of light sources. As such, the LCD device with the edge type backlight unit can be divisionally driven in blocks.
Claims5
A liquid crystal display device comprising:
- a liquid crystal panel configured to display an image;
- a backlight unit configured to include at least two light source units disposed opposite at least two edges, which are connected to each other, among four edges of the liquid crystal panel to divide the liquid crystal panel into a plurality of blocks, and an optical sheet configured to guide light emitted from the light source units to the liquid crystal panel;
- an input unit configured to receive data corresponding to the image;
- a brightness analyzer configured to analyze the data from the input unit in blocks and to derive logic signals from the analyzed brightness data corresponding to the image data of each block, depending on a specific algorithm;
- a lamp control signal generator configured to derive lamp control signals from the logic signals controlling a turning-on/off time of each light source unit from the logic signals;
- and
- a lamp driver configured to drive the light source units with the lamp control signals from the lamp control signal generator,
- wherein the at least two edges are connected to each other and the light source units are configured to each include a plurality of light sources which include a light emission diode package.
5 more elements
Dependencies are inferred from the claim text.