Liquid crystal display device
View Patent ↗According to one embodiment, a liquid crystal display device includes a first substrate including a first transmissive electrode, a second transmissive electrode, a third transmissive electrode, a fourth transmissive electrode, a fifth transmissive electrode, and a reflective electrode, a second substrate including a first color filter opposed to the first transmissive electrode and the fourth transmissive electrode, a second color filter opposed to the second transmissive electrode and the fifth transmissive electrode, a third color filter opposed to the third transmissive electrode, and a fourth color filter opposed to the reflective electrode, and a liquid crystal layer held between the first substrate and the second substrate.
1. A liquid crystal display device comprising:
a first substrate including a first transmissive electrode, a second transmissive electrode neighboring the first transmissive electrode in a first direction, a third transmissive electrode neighboring the second transmissive electrode in the first direction, a fourth transmissive electrode neighboring the first transmissive electrode in a second direction, a fifth transmissive electrode neighboring the second transmissive electrode in the second direction, and a reflective electrode neighboring the third transmissive electrode in the second direction;
a second substrate including a first color filter extending in the second direction and opposed to the first transmissive electrode and the fourth transmissive electrode, a second color filter extending in the second direction and opposed to the second transmissive electrode and the fifth transmissive electrode, a third color filter opposed to the third transmissive electrode, and a fourth color filter opposed to the reflective electrode; and
a liquid crystal layer held between the first substrate and the second substrate,
wherein the first color filter is a red color filter, the second color filter is a green color filter, the third color filter is a blue color filter, and the fourth color filter is a white color filter.
2. The liquid crystal display device of claim 1 , wherein areas of the first transmissive electrode, the second transmissive electrode, the fourth transmissive electrode and the fifth transmissive electrode are substantially equal.
3. The liquid crystal display device of claim 2 , wherein an area of the third transmissive electrode is greater than the area of the first transmissive electrode.
4. The liquid crystal display device of claim 2 , wherein an area of the reflective electrode is less than the area of the first transmissive electrode.
5. The liquid crystal display device of claim 1 , wherein, relative to an identical gray level value, a voltage applied to the reflective electrode is lower than a voltage applied to the first transmissive electrode.
6. The liquid crystal display device of claim 1 , wherein the second substrate further includes a common electrode opposed to the first to fifth transmissive electrodes and the reflective electrode, and
slits are formed in the common electrode at positions opposed to the first to fifth transmissive electrodes and the reflective electrode.
7. The liquid crystal display device of claim 6 , wherein an area of the slit at the position opposed to the reflective electrode is greater than an area of the slit at the position opposed to the first transmissive electrode.
8. The liquid crystal display device of claim 6 , wherein the first substrate further includes a first vertical alignment film covering the first to fifth transmissive electrodes and the reflective electrode, and
the second substrate further includes a second vertical alignment film covering the common electrode.
9. The liquid crystal display device of claim 1 , wherein cell gaps at positions opposed to the first to fifth transmissive electrodes and the reflective electrode are substantially equal.
10. A liquid crystal display device comprising:
a first substrate including a first common electrode, a first transmissive electrode opposed to the first common electrode, a second transmissive electrode opposed to the first common electrode and neighboring the first transmissive electrode in a first direction, a third transmissive electrode opposed to the first common electrode and neighboring the second transmissive electrode in the first direction, and a reflective electrode opposed to the first common electrode and neighboring the third transmissive electrode in a second direction;
a second substrate including a first color filter opposed to the first transmissive electrode, a second color filter opposed to the second transmissive electrode, a third color filter opposed to the third transmissive electrode, a fourth color filter opposed to the reflective electrode, and a second common electrode opposed to the first to third transmissive electrodes and the reflective electrode and having a potential equal to a potential of the first common electrode; and
a liquid crystal layer held between the first substrate and the second substrate,
wherein the first color filter is a red color filter, the second color filter is a green color filter, the third color filter is a blue color filter, and the fourth color filter is a white color filter.
11. The liquid crystal display device of claim 10 , wherein areas of the first transmissive electrode and the second transmissive electrode are substantially equal.
12. The liquid crystal display device of claim 11 , wherein an area of the third transmissive electrode is greater than the area of the first transmissive electrode.
13. The liquid crystal display device of claim 11 , wherein an area of the reflective electrode is less than the area of the first transmissive electrode.
14. The liquid crystal display device of claim 10 , wherein, relative to an identical gray level value, a voltage applied to the reflective electrode is lower than a voltage applied to the first transmissive electrode.
15. The liquid crystal display device of claim 10 , wherein slits are formed in the second common electrode at positions opposed to the first to third transmissive electrodes and the reflective electrode.
16. The liquid crystal display device of claim 15 , wherein an area of the slit at the position opposed to the reflective electrode is greater than an area of the slit at the position opposed to the first transmissive electrode.
17. he liquid crystal display device of claim 10 , wherein the first substrate further includes a first vertical alignment film covering the first to third transmissive electrodes and the reflective electrode, and
the second substrate further includes a second vertical alignment film covering the second common electrode.
18. The liquid crystal display device of claim 10 , wherein cell gaps at positions opposed to the first to third transmissive electrodes and the reflective electrode are substantially equal.