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US 2012/0075172 A1Published application
Liquid crystal display device
AssigneesPanasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
InventorTatsuo Makishima
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Abstract
The present invention provides a liquid crystal display device having a large screen, high resolution and high reliability at the same time, even in the case where the drivers are mounted on the TFT substrate in accordance with a COG mounting method.
Claims12
A liquid crystal display device, comprising:
- a TFT substrate where thin film transistors are formed;
- a counter substrate that faces said TFT substrate;
- a liquid crystal display panel where liquid crystal is sealed between said TFT substrate and said counter substrate;
- a backlight which illuminates said liquid crystal display panel with light;
- and a frame which supports said liquid crystal display panel, wherein
- scanning signal lines and video signal lines are formed on said TFT substrate, semiconductor chips connected to said video signal lines are provided to said TFT substrate,
- said semiconductor chips are placed along a first side of said TFT substrate,
- a first spacer is provided in a location that faces said semiconductor chip as viewed in a plane between said first side of said TFT substrate and said frame, and
- a second spacer of which a thermal conductance is lower than said first spacer is provided between said frame and a second side of said TFT substrate, the second side being different from said first side.
6 more elements
A liquid crystal display device, comprising:
- a TFT substrate where thin film transistors are formed;
- a counter substrate that faces said TFT substrate;
- a liquid crystal display panel where liquid crystal is sealed between said TFT substrate and said counter substrate;
- a backlight which illuminates said liquid crystal display panel with light;
- and a frame which supports said liquid crystal display panel, wherein
- scanning signal lines and video signal lines are formed on said TFT substrate, semiconductor chips connected to said video signal lines are provided to said TFT substrate,
- spacers having a thermal conductance of 0.5 W/m·K or higher are provided between the sides of said TFT substrate and said frame,
- said semiconductor chips are aligned along a first side of said TFT substrate and face a spacer as viewed in a plane,
- said backlight has light emitting elements and a light guiding plate,
- said light emitting elements are aligned along one side of said light guiding plate, and
- said one side of said light guiding plate faces a second side of said TFT substrate, the second side being different from said first side.
8 more elements
Dependencies are inferred from the claim text.