Optical Film, Liquid Crystal Panel, And Liquid Crystal Display Apparatus

• US 20080007677A1
• Filed: 06/15/2005
• Published: 01/10/2008
• Est. Priority Date: 06/15/2004
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Enomoto, Masashi
• Application Number:
  US11/570,659
• Publication Number:
  US 20080007677A1
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: G02F 1/133504 Diffusing, scattering, diffracting elements associated to illuminating devices G02F1/133606

Abstract

An optical film, a liquid crystal panel, and liquid crystal display apparatus are provided. The liquid crystal display apparatus irradiates a rear surface of a liquid crystal panel with light and displays a screen. The liquid crystal display apparatus has viewing angle improvement means for decreasing light at angles equal to or greater than a predetermined value in a normal direction of the liquid crystal panel from light emitted from a light source and diffusing light at angles smaller than the predetermined value in the normal direction of the liquid crystal panel on a display surface side of the liquid crystal panel.

Claims

1. A liquid crystal display apparatus which irradiates a rear surface of a liquid crystal panel with light and displays a screen, comprising:

viewing angle improvement means for decreasing light at angles equal to or greater than a predetermined value in a normal direction of the liquid crystal panel from light emitted from a light source and diffusing light at angles smaller than the predetermined value in the normal direction of the liquid crystal panel on a display surface side of the liquid crystal panel.

2. The liquid crystal display apparatus as set forth in claim 1,

wherein the viewing angle improvement means has:

a restriction layer which decreases the light at angles equal to or greater than the predetermined value in the normal direction of the liquid crystal panel from the light emitted from the light source; and

a light diffusion layer which diffuses light which passed through the restriction layer on the display surface side of the liquid crystal panel.

3. The liquid crystal display apparatus as set forth in claim 2,

wherein the restriction layer has a barrier which is two-dimensionally arranged;

and

wherein the barrier has light absorption property.

4. The liquid crystal display apparatus as set forth in claim 2,

wherein particles which scatter the light which passed through the restriction layer are dispersed in the diffusion layer.

5. The liquid crystal display apparatus as set forth in claim 1,

wherein the viewing angle improvement means has:

a restriction layer on which a barrier having light absorption property is two-dimensionally arranged; and

diffusion means which is disposed in the barrier and which diffuses light, and

wherein the viewing angle restriction means is disposed on a full screen side of the liquid crystal panel.

6. The liquid crystal display apparatus as set forth in claim 5

wherein the diffusion means is particles dispersed in the barrier.

7. The liquid crystal display apparatus as set forth in claim 5, m

wherein the diffusion means is a lens disposed in the barrier.

8. The liquid crystal display apparatus as set forth in claim 7,

wherein particles which diffuses light are dispersed in the lens.

9. An optical film, comprising:

a restriction layer which decreases light at angles equal to or greater than a predetermined value in a normal direction of a liquid crystal panel from light emitted from the liquid crystal panel.

10. The optical film as set forth in claim 9, further comprising:

a light diffusion layer which diffuses light which passed through the restriction layer.

11. A liquid crystal panel, comprising:

a first substrate and a second substrate oppositely disposed with a predetermined distance through a spacer; and

a liquid crystal layer disposed between the first substrate and the second substrate,

wherein the second substrate has;

a light insulation film which is disposed on an opposite side of the first substrate and which decreases light at angles equal to or greater than a predetermined value in a normal direction of a liquid crystal panel; and

a color film disposed at an opening portion of the light insulation film.

12. A liquid crystal display apparatus which irradiates a rear surface of a liquid crystal panel with light and displays a screen, comprising:

a liquid crystal panel; and

a diffusion layer which is disposed on a display surface side of the liquid crystal panel,

wherein the liquid crystal panel has;

a first substrate and a second substrate oppositely disposed with a predetermined distance through a spacer; and

a liquid crystal layer disposed between the first substrate and the second substrate,

wherein the second substrate has;

a light insulation film which is disposed on an opposite side of the first substrate and which decreases light at angles equal to or greater than a predetermined value in a normal direction of the liquid crystal panel, and

a color film disposed at an opening portion of the light insulation film.