Module for liquid crystal displays

• US 20060082701A1
• Filed: 10/18/2005
• Published: 04/20/2006
• Est. Priority Date: 10/18/2004
• Status: Abandoned Application

• Current Assignee: Tong Li
• Original Assignee: Tong Li
• Inventors: Li, Tong
• Application Number:
  US11/252,610
• Publication Number:
  US 20060082701A1
• Time in Patent Office: Days
• US Class Current: 349/95
• CPC Class Codes: G02F 1/133526 Lenses, e.g. microlenses or Fresnel lenses
• CPC Class Codes: G02F 1/13362 providing polarized light, e.g. by converting a polarisation component into another one
• CPC Class Codes: G02F 1/133621 providing coloured light G02F1/133617, G02F1/133533 take precedence

Abstract

A module for a liquid crystal display includes a beam divider for separating an extended light beam from the light source into discrete unpolarized micro beams, a beam displacer for separating the discrete unpolarized beams into polarized micro beams, and a color displacer for separating white polarized micro light beams from the beam displacer into orthogonally polarized primary color beams and directing the orthogonally polarized primary color to different locations for display panel.

Claims

1. A module for a liquid crystal display comprising:

a beam divider that converts light emitted by a backlight into unpolarized discrete micro beams.

2. The module of claim 1 wherein the beam divider comprises a lens array, the lens array including a panel having first protrusions with a first radius on a first side and second protrusions with a second radius on a second side wherein the first radius is larger than the second radius such that light impinging the first side is transmitted from the second side as a plurality of discrete light beams.

3. The module of claim 1 wherein the beam divider comprises:

a first convex lens array;

a second convex lens array, the lens of the second convex array having a radius smaller than the radius of the lenses of the first lens array, wherein light impinging the first array is transmitted from the second array as a plurality of discrete light beams.

4. The module of claim 3 wherein the first and second lens arrays comprise spaced apart transparent panels.

5. The module of claim 1 further comprising a beam displacer, the beam displacer separating the unpolarized discrete micro beams into polarized light beams

6. The module of claim 5 wherein the beam displacer comprises first and second transparent substrates with a liquid crystal array disposed between the substrates.

7. The module of claim 1 further comprising a color displacer.

8. The module of claim 7 comprising first and second primary color filters arranged in a sequential pattern to separate impinging white light into primary color beams.

9. The module of claim 7 wherein the color displacer is a filter array comprising:

a first filter that transmits a first primary color and reflects a second and third primary colors; and

a second filter that reflects the second primary color, and transmits the first and third primary colors.

10. The module of claim 9 further comprising a third filter that reflects the third primary color and transmits the first and second primary colors.

11. The module of claim 9 wherein the array of color filters is aligned perpendicular to impinging beams transmitted by the beam displacer.

12. A module for a liquid crystal display comprising:

a beam displacer, the beam displacer dividing a beam of unpolarized light into a pair of spaced apart polarized light beams.

13. The module of claim 12 wherein the beam displacer comprises first and second transparent substrates with a liquid crystal array disposed between the substrates.

14. The module of claim 12 further comprising a color displacer.

15. The module of claim 14 wherein the color displacer comprises first and second primary color filters arranged in a sequential pattern to separate impinging white light into primary color beams.

16. The module of claim 14 wherein the beam displacer and color displacer are further integrated into a color beam displacer comprising:

a substrate;

a color filter array; and

liquid crystal molecules positioned between the substrate and color filter array.

17. The module of claim 14 further comprising a beam divider, the beam divider comprising a lens array that transmits a plurality of discrete unpolarized micro beams that impinge the substrate.

18. A module for a liquid crystal display comprising:

a color displacer comprising primary color filters that separate white light into primary colors by transmission and reflection and display these colors.

19. The module of claim 18 wherein the color displacer comprises a filter array comprising:

a first filter that transmits a first primary color and reflects a second and third primary colors; and

a second filter that reflects the second primary color, and transmits the first and third primary colors.

20. The module of claim 19 further comprising a third filter that reflects the third primary color and transmits the first and second primary colors.