Liquid crystal display device
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorsZhenhua Sun, Lixuan Chen
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Abstract
The invention provides an LCD device, whose polarizers comprising: a plurality of polarizing units disposed corresponding to the first, second and third sub-pixels and arranged in an array; each polarizing unit being a multilayer film structure, comprising a transparent body, and a plurality of first film layers and a plurality of second film layers interleaved into a stack disposed on the body. By achieving polarization through multilayer film structure and each polarizing unit only needing to satisfy polarization conditions for light of the wavelength range of light emitted by corresponding sub-pixel, the invention can reduce material selection difficulty and production difficult for multilayer structure and improve LCD contrast.
Claims18
A liquid crystal display (LCD) device, which comprises:
- a backlight module, an LCD panel disposed above the backlight module, and two polarizers each disposed at one of two sides of the LCD panel, respectively;
- the LCD panel comprising:
- a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged in an array, the first, second and third sub-pixels emitting different color of light;
- each polarizer comprising:
- a plurality of polarizing units disposed respectively corresponding to the first, second and third sub-pixels;
- each polarizing unit being a multilayer film structure, comprising a transparent body, and a plurality of first film layers and a plurality of second film layers interleaved into a stack disposed on the body;
- for the polarizing unit disposed corresponding to each sub-pixel, the polarizing unit satisfying the following equation for the light within the wavelength range of the light emitted by the sub-pixel:
- n
- H
- 2
-
- n
- L
- 2
- n
- H
- 2
- +
- n
- L
- 2
- =
- n
- G
- 2
-
-
- Sin
- 2
-
- θ
- G
- wherein nH being the refraction index of each of the first film layers regarding the light within the wavelength range, nL being the refraction index of each of the second film layers regarding the light within the wavelength range, nH>nL, nG being the refraction index of the body regarding the light within the wavelength range, and θG being an angle inside the body between the light within the wavelength range and an imaginary line normal to a surface of the body opposite to the first and second film layers.
A liquid crystal display (LCD) device, which comprises:
- a backlight module, an LCD panel disposed above the backlight module, and two polarizers each disposed at one of two sides of the LCD panel, respectively;
- the LCD panel comprising:
- a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged in an array, the first, second and third sub-pixels emitting different color of light;
- each polarizer comprising:
- a plurality of polarizing units disposed respectively corresponding to the first, second and third sub-pixels;
- each polarizing unit being a multilayer film structure, comprising a transparent body, and a plurality of first film layers and a plurality of second film layers interleaved into a stack disposed on the body;
- for the polarizing unit disposed corresponding to each sub-pixel, the polarizing unit satisfying the following equation for the light within the wavelength range of the light emitted by the sub-pixel:
- n
- H
- 2
-
- n
- L
- 2
- n
- H
- 2
- +
- n
- L
- 2
- =
- n
- G
- 2
-
-
- Sin
- 2
-
- θ
- G
- wherein nH being the refraction index of each of the first film layers regarding the light within the wavelength range, nL being the refraction index of each of the second film layers regarding the light within the wavelength range, nH>nL, nG being the refraction index of the body regarding the light within the wavelength range, and θG being an angle inside the body between the light within the wavelength range and an imaginary line normal to a surface of the body opposite to the first and second film layers;
- wherein the first, second and third sub-pixels emitting light of red, green and blue respectively;
- wherein the polarizers being formed by vapor deposition, sputtering or spin coating.
Dependencies are inferred from the claim text.