Display device including a retardation layer
AssigneeAu Optronics Corporation
InventorsWang-Shuo Kao, Wen-Fang Sung, Zhi-Lu Ye, Yun Cheng
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Abstract
A display device includes a backlight module, a liquid crystal layer, a lower polarizer, an upper polarizer, and a retardation layer. The liquid crystal layer is disposed on a lighting side of the backlight module while the lower polarizer is disposed between the liquid crystal layer and the backlight module. The upper polarizer is disposed on a side of the liquid crystal layer opposite to the lower polarizer, and the retardation layer is between the upper and lower polarizers. The retardation layer has a retardation area that may modulates the light passing through the lower polarizer and make the light passes through the upper polarizer.
Claims14
A display device, comprising:
- a backlight module, having a lighting side;
- a liquid crystal layer, disposed on the lighting side;
- an image processing module to control the liquid crystal layer;
- a lower polarizer, disposed on a first side of the liquid crystal layer that faces the backlight module;
- an upper polarizer, disposed on a second side of the liquid crystal layer opposite to the lower polarizer;
- and
- a retardation layer, disposed between the lower polarizer and the upper polarizer, wherein the retardation layer comprises a retardation area and a non-retardation area, and the retardation area overlaps a partial projection of the liquid crystal layer,
- wherein when no voltage is applied to the liquid crystal layer, backlight generated by a part of the backlight module that corresponds to the retardation area or ambient light passes through the lower polarizer and then undergoes phase retardation or lead by the retardation area and at least partially passes through the upper polarizer,
- wherein the liquid crystal layer comprises:
- a plurality of normally white pixels, respectively corresponding to the retardation area;
- and
- a plurality of normally black pixels, respectively corresponding to the non-retardation area,
- wherein the image processing module receives an original image signal;
- performs level inversion processing on an image signal part in the original image signal that corresponds to the normally white pixels to obtain an inversed image signal;
- and respectively controls the normally white pixels and the normally black pixels according to the inversed image signal and a part in the original image signal that is not inversed.
Dependencies are inferred from the claim text.