Reflection type liquid crystal display device and personal digital equipment using the same
First Claim
1. A reflection type liquid crystal display device comprising:
- a first substrate having a reflective electrode formed thereon;
a second substrate having a transparent counter substrate and a color filter formed thereon; and
a liquid crystal layer interposed between the first substrate and the second substrate,wherein the color filter includes a red color filter portion and a cyan color filter portion, the cyan color filter portion transmitting light having a complementary color of a color of light transmitted through the red color filter portion, andwherein the light transmitted through the red color filter portion has a chromaticity (x, y) on an XYZ color system chromaticity diagram satisfying the following formulae under the condition of a 2°
viewing angle using a standard light source D65 ;
space="preserve" listing-type="equation">(0.038).sup.2 ≦
(x-0.313).sup.2 +(25/4)·
(y-0.329).sup.2 ≦
(0.178).sup.2 ;
space="preserve" listing-type="equation">y≦
0.145x+0.236; and
space="preserve" listing-type="equation">y≧
-0.233x+0.376.2.
2 Assignments
0 Petitions
Accused Products
Abstract
A reflection type liquid crystal display device of the present invention includes: a first substrate having a reflective electrode formed thereon; a second substrate having a transparent counter substrate and a color filter formed thereon; and a liquid crystal layer interposed between the first and second substrates, wherein the color filter includes a red color filter portion and a cyan color filter portion. The cyan color filter portion transmits light having a complementary color of a color of light transmitted through the red color filter portion. The light transmitted through the red color filter portion has a chromaticity (x, y) on the XYZ color system chromaticity diagram satisfying the following formulae at a 2° viewing angle using a standard light source D65 :
(0.038).sup.2 ≦(x-0.313).sup.2 +(25/4)·(y-0.329).sup.2
≦(0.178)2 ;
y≦0.145x+0.236; and
y≧-0.233x+0.376.
14 Citations
12 Claims
-
1. A reflection type liquid crystal display device comprising:
-
a first substrate having a reflective electrode formed thereon; a second substrate having a transparent counter substrate and a color filter formed thereon; and a liquid crystal layer interposed between the first substrate and the second substrate, wherein the color filter includes a red color filter portion and a cyan color filter portion, the cyan color filter portion transmitting light having a complementary color of a color of light transmitted through the red color filter portion, and wherein the light transmitted through the red color filter portion has a chromaticity (x, y) on an XYZ color system chromaticity diagram satisfying the following formulae under the condition of a 2°
viewing angle using a standard light source D65 ;
space="preserve" listing-type="equation">(0.038).sup.2 ≦
(x-0.313).sup.2 +(25/4)·
(y-0.329).sup.2 ≦
(0.178).sup.2 ;
space="preserve" listing-type="equation">y≦
0.145x+0.236; and
space="preserve" listing-type="equation">y≧
-0.233x+0.376.2. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A color filter including a red color filter portion and a cyan color filter portion,
wherein the cyan color filter portion transmits light having a complementary color of a color of light transmitted through the red color filter portion, and wherein the light transmitted through the red color filter portion has a chromaticity (x, y) on an XYZ color system chromaticity diagram satisfying the following formulae under the condition of a 2° - viewing angle using a standard light source D65 ;
space="preserve" listing-type="equation">(0.038).sup.2 ≦
(x-0.313).sup.2 +(25/4)·
(y-0.329).sup.2 ≦
(0.178).sup.2 ;
space="preserve" listing-type="equation">y≦
0.145x+0.236; and
space="preserve" listing-type="equation">y≧
-0.233x+0.376. - View Dependent Claims (9, 10, 11, 12)
- viewing angle using a standard light source D65 ;
Specification