Liquid crystal displays
View Patent ↗Systems for displaying images are provided. A representative system comprises a wide viewing angle liquid crystal display with multi-film compensation. A liquid crystal display comprising a first substrate, a second substrate, and a liquid crystal layer sandwiched between the first substrate and the second substrate. A first compensation film is interposed between the first polarizer and the first substrate. A second compensation film interposed between the second polarizer and the second substrate. The first compensation film and the second compensation film comprise different birefringence polarities.
1. A system for displaying images comprising:
a liquid crystal display comprising:
a first substrate;
a second substrate;
a liquid crystal layer sandwiched between the first substrate and the second substrate;
a first polarizer laminated outside the first substrate opposing the liquid crystal layer;
a second polarizer laminated outside the second substrate opposing the liquid crystal layer;
a first compensation film comprising optical axis angles in a range approximately from 24° to 79°, interposed between the first polarizer and the first substrate; and
a second compensation film comprising optical axis angles in a range approximately from 2° to 52°, interposed between the second polarizer and the second substrate, wherein the first compensation film and the second compensation film comprise different birefringence polarities;
a ¼λ compensation film and a first ½λ compensation film film interposed between the first polarizer and the first compensation film; and
a second ½λ compensation film interposed between the second polarizer and the second compensation film.
2. The system as claimed in claim 1 , wherein the liquid crystal layer comprises an electrical control birefringence (ECB) liquid crystal.
3. The system as claimed in claim 1 , wherein the birefringence Δn of the first compensation film is negative and the birefringence Δn of the second compensation film is positive.
4. The system as claimed in claim 1 , wherein the .birefringence Δn of the first compensation film is positive and the birefringence Δn of the second compensation film is negative.
5. A system for displaying images comprising:
a liquid crystal display comprising:
a first substrate;
a second substrate;
a liquid crystal layer sandwiched between the first substrate and the second substrate;
a first polarizer laminated outside the first substrate opposing the liquid crystal layer;
a second polarizer laminated outside the second substrate opposing the liquid crystal layer;
a first compensation film comprising optical axis angles in a range approximately from 24° to 79°, interposed between the first polarizer and the first substrate; and
a second compensation film comprising optical axis angles in a range approximately from 2° to 52°, interposed between the second polarizer and the second substrate, wherein the first compensation film and the second compensation film comprise different birefringence polarities;
a first ½λ compensation film interposed between the first polarizer and the first compensation film; and
a ¼λ compensation film and a second ½λ compensation film interposed between the second polarizer and the second compensation film.
6. The system as claimed in claim 1 , wherein the first compensation film comprises disk-like liquid crystal.
7. The system as claimed in claim 1 , wherein the second compensation film comprises rod-like liquid crystal.
8. The system as in claim 1 , further comprising:
a controller coupled to the liquid crystal display panel to control the panel to render an image in accordance with an input.
9. The system as in claim 8 , further comprising:
an input device coupled to the controller of the liquid crystal display device to control the display device to render an image.
10. The system as claimed in claim 9 , wherein the liquid crystal layer comprises an electrical control birefringence (ECB) liquid crystal.
11. The system as claimed in claim 9 , wherein the negative birefringence compensation film comprises disk-like liquid crystal.
12. The system as claimed in claim 9 , wherein the positive birefringence compensation film comprises rod-like liquid crystal.
13. The system as claimed in claim 5 , wherein the liquid crystal layer comprises an electrical control birefringence (ECB) liquid crystal.
14. The system as claimed in claim 5 , wherein the birefringence Δn of the first compensation film is negative and the birefringence Δn of the second compensation film is positive.
15. The system as claimed in claim 5 , wherein the birefringence Δn of the first compensation film is positive and the birefringence Δn of the second compensation film is negative.
16. A system for displaying images comprising:
a liquid crystal display comprising:
a first substrate;
a second substrate;
a liquid crystal layer sandwiched between the first substrate and the second substrate;
a first polarizer laminated outside the first substrate opposing the liquid crystal layer;
a second polarizer laminated outside the second substrate opposing the liquid crystal layer;
a negative birefringence compensation film comprising optical axis angles in a range approximately from 24° to 79°, interposed between the first polarizer and the first substrate;
a positive birefringence compensation film comprising optical axis angles in a range approximately from 2° to 52°, interposed between the second polarizer and the second substrate;
a ¼λ compensation film and a first ½λ compensation film interposed between the first polarizer and the negative birefringence compensation film; and
a second ½λ compensation film interposed between the second polarizer and the positive birefringence compensation film.
17. A system for displaying images comprising:
a liquid crystal display comprising:
a first substrate;
a second substrate;
a liquid crystal layer sandwiched between the first substrate and the second substrate;
a first polarizer laminated outside the first substrate opposing the liquid crystal layer;
a second polarizer laminated outside the second substrate opposing the liquid crystal layer;
a positive birefringence compensation film comprising optical axis angles in a range approximately from 2° to 52°, interposed between the first polarizer and the first substrate;
a negative birefringence compensation film comprising optical axis angles in a range approximately from 24° to 79°, interposed between the second polarizer and the second substrate;
a first ½λ compensation film interposed between the first polarizer and the positive birefringence compensation film; and
a ¼λ compensation film and a second ½λ compensation film interposed between the second polarizer and the negative birefringence compensation film.
18. The system as claimed in claim 17 , wherein the liquid crystal layer comprises an electrical control birefringence (ECB) liquid crystal.
19. The system as claimed in claim 17 , wherein the negative compensation film comprises disk-like liquid crystal.
20. The system as claimed in claim 17 , wherein the positive compensation film comprises rod-like liquid crystal.