Liquid crystal display device
First Claim
Patent Images
1. A liquid crystal display device having a gradation display function comprising:
- first color pixels which display an image in the gradation range of an n-number of gray levels in a first color; and
second color pixels which display an image in the gradation range of the n-number of gray levels in a second color with a lower relative visibility than the first color;
wherein the first color pixels have a viewing angle characteristic of Mi/Mj≦
1.3 in a case where a display luminance range in a normal direction to a display surface in a gradation range of a gray level i to a gray level j is Li to Lj and a display luminance range in an oblique viewing-angle direction of 30°
or more is Mi to Mj (where n, i and j are real numbers, and n≧
i>
j≧
0), andwherein the liquid crystal display device has a display mode in which a display image is displayed in the gradation range of i to j with respect to the first color pixels, and a display image is displayed with respect to the second color pixels in a gradation range that is wider than the gradation range for the first color pixels.
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Abstract
A liquid crystal display device has a gradation display function of at least an n-number of gray levels and has a viewing angle characteristic of Mi/Mj≦1.3 in a case where a display luminance range in a normal direction to a display surface in a gradation range of predetermined gray levels i to j is Li to Lj and a display luminance range in an oblique viewing-angle direction of 30° or more is Mi to Mj (where n, i and j are real numbers, and n≧i>j≧0). The liquid crystal display device has a display mode in which a display image is displayed with a display luminance range of the display image being limited to Li to Lj.
9 Citations
15 Claims
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1. A liquid crystal display device having a gradation display function comprising:
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first color pixels which display an image in the gradation range of an n-number of gray levels in a first color; and second color pixels which display an image in the gradation range of the n-number of gray levels in a second color with a lower relative visibility than the first color; wherein the first color pixels have a viewing angle characteristic of Mi/Mj≦
1.3 in a case where a display luminance range in a normal direction to a display surface in a gradation range of a gray level i to a gray level j is Li to Lj and a display luminance range in an oblique viewing-angle direction of 30°
or more is Mi to Mj (where n, i and j are real numbers, and n≧
i>
j≧
0), andwherein the liquid crystal display device has a display mode in which a display image is displayed in the gradation range of i to j with respect to the first color pixels, and a display image is displayed with respect to the second color pixels in a gradation range that is wider than the gradation range for the first color pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification