LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. A liquid crystal display device comprising a backlight provided on the back side of a liquid crystal cell,wherein the liquid crystal cell has a structure in which a liquid crystal layer is interposed between a first substrate and a second substrate, a first polarizing plate is attached to the outside of the first substrate, and a second polarizing plate is attached to the outside of the second substrate,wherein the liquid crystal cell and the backlight are driven by a field sequential system,wherein a diffusion film is attached to the first polarizing plate which is located on the display surface side of the liquid crystal cell, andwherein the backlight is a collimated backlight with a half value width of 20 degrees or less.
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Abstract
A liquid crystal display device includes a backlight provided on a liquid crystal cell in which a liquid crystal layer is interposed between first and second substrates, a first polarizing plate is attached to the outside of the first substrate, and a second polarizing plate is attached to the outside of the second substrate. The liquid crystal cell and the backlight are driven by a field sequential system. A diffusion film is provided on the first polarizing plate which is located on the display surface side of the liquid crystal cell. The backlight is a collimated backlight with a half value width of 20 degrees or less. The viewing angle is increased by the diffusion film while the reduction of the contrast due to the use of the diffusion film is prevented by the collimated backlight, to achieve a liquid crystal display device with sufficient response time and contrast.
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Citations
8 Claims
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1. A liquid crystal display device comprising a backlight provided on the back side of a liquid crystal cell,
wherein the liquid crystal cell has a structure in which a liquid crystal layer is interposed between a first substrate and a second substrate, a first polarizing plate is attached to the outside of the first substrate, and a second polarizing plate is attached to the outside of the second substrate, wherein the liquid crystal cell and the backlight are driven by a field sequential system, wherein a diffusion film is attached to the first polarizing plate which is located on the display surface side of the liquid crystal cell, and wherein the backlight is a collimated backlight with a half value width of 20 degrees or less.
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7. A liquid crystal display device comprising a backlight provided on the back side of a liquid crystal cell,
wherein the liquid crystal cell has a structure in which a liquid crystal layer is interposed between a first substrate and a second substrate, a first polarizing plate is attached to the outside of the first substrate, and a second polarizing plate is attached to the outside of the second substrate, wherein the liquid crystal cell and the backlight are driven by a field sequential system, wherein a diffusion film is provided between the first polarizing plate and the first substrate, which are located on the display surface side of the liquid crystal cell, and wherein the backlight is a collimated backlight with a half value width of 20 degrees or less.
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8. A liquid crystal display device comprising a backlight provided on the back side of a liquid crystal cell,
wherein the liquid crystal cell has a structure in which a liquid crystal layer is interposed between a first substrate and a second substrate, a first polarizing plate is attached to the outside of the first substrate, and a second polarizing plate is attached to the outside of the second substrate, wherein the liquid crystal cell and the backlight are driven by a field sequential system, wherein a diffusion film is provided on the side of the liquid crystal layer of the first substrate, which is located on the display surface side of the liquid crystal cell, and wherein the backlight is a collimated backlight with a half value width of 20 degrees or less.
Specification