COLOR LIQUID CRYSTAL DISPLAY DEVICE ASSEMBLY

• US 20090115713A1
• Filed: 10/23/2008
• Published: 05/07/2009
• Est. Priority Date: 11/02/2007
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kakinuma, Koichiro, Haga, Shuichi, Kawamata, Masaaki, Kusunoki, Tsuneo, Igarashi, Takahiro
• Granted Patent: US 8,035,590 B2
• Time in Patent Office: Days
• US Class Current: 345/88
• CPC Class Codes: G02F 1/133526 Lenses, e.g. microlenses or Fresnel lenses
• CPC Class Codes: G02F 1/133617 Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
• CPC Class Codes: G09G 2320/064 by time modulation of the brightness of the illumination source
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 2360/145 the light originating from the display screen
• CPC Class Codes: G09G 3/3426 the different display panel areas being distributed in two dimensions, e.g. matrix
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A color liquid crystal display device assembly includes a color liquid crystal display device in which pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix, and a planar light source device which has light sources emitting first primary light corresponding to a first primary color of the light three primary colors and illuminating the color liquid crystal display device, and the liquid crystal display device has (A) second primary light emitting regions which emit second primary light when excited by the first primary light passing through the second subpixel, (B) third primary light emitting regions which emit third primary light when excited by the first primary light passing through the third subpixel, and (C) diffusion regions which diffuse the first primary light emitted from the light sources and passing through each first subpixel.

Claims

1. A color liquid crystal display device assembly comprising:

a color liquid crystal display device including

a front panel including a first substrate having a first surface and a second surface and a transparent first electrode formed on the first surface of the first substrate;

a rear panel including a second substrate having a first surface and a second surface and transparent second electrodes formed on the first surface of the second substrate; and

a liquid crystal material disposed between the first surface of the first substrate and the first surface of the second substrate, in which pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix; and

a planar light source device which is disposed at a rear panel side and which has light sources illuminating the color liquid crystal display device from the rear panel side,

wherein the light sources emit first primary light corresponding to a first primary color of the light three primary colors formed of the first primary color, a second primary color, and a third primary color, and

the front panel further includes

second primary light emitting regions each disposed between a part of the first surface of the first substrate and a part of the transparent first electrode, both of which correspond to each second subpixel, composed of second primary light emitting particles emitting second primary light corresponding to the second primary color, and emitting the second primary light when excited by the first primary light emitted from the light sources and passing through each second subpixel;

third primary light emitting regions each disposed between a part of the first surface of the first substrate and a part of the transparent first electrode, both of which correspond to each third subpixel, composed of third primary light emitting particles emitting third primary light corresponding to the third primary color, and emitting the third primary light when excited by the first primary light emitted from the light sources and passing through each third subpixel; and

diffusion regions each disposed between a part of the first surface of the first substrate and a part of the transparent first electrode, both of which correspond to each first subpixel, and diffusing the first primary light emitted from the light sources and passing through each first subpixel.

2. The color liquid crystal display device assembly according to claim 1,

wherein the front panel further includes:

a light reflection film reflecting the second primary light and the third primary light between the transparent first electrode and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions.

3. The color liquid crystal display device assembly according to claim 1,

wherein the front panel further includes, between the transparent first electrode and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions:

first light focusing members focusing the first primary light on the diffusion regions;

second light focusing members focusing the second primary light on the second primary light emitting regions; and

third light focusing members focusing the third primary light on the third primary light emitting regions.

4. The color liquid crystal display device assembly according to claim 1,

wherein the front panel further includes:

a color filter between the first surface of the first substrate and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions.

5. The color liquid crystal display device assembly according to claim 4,

wherein the front panel further includes, between the color filter and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions:

first light focusing members focusing the first primary light passing through the diffusion regions on the color filter;

second light focusing members focusing the second primary light emitted in the second primary light emitting regions on the color filter; and

third light focusing members focusing the third primary light emitted in the third primary light emitting regions on the color filter.

20. The color liquid crystal display device assembly according to claim 1,

wherein the light sources each comprise one of a light emitting diode, a fluorescent lamp, and an electroluminescent light emitting device, which emits blue light as the first primary color.

6. A color liquid crystal display device assembly comprising:

a color liquid crystal display device including

a front panel including a first substrate having a first surface and a second surface and a transparent first electrode formed on the first surface of the first substrate;

a rear panel including a second substrate having a first surface and a second surface and transparent second electrodes formed on the first surface of the second substrate; and

a liquid crystal material disposed between the first surface of the first substrate and the first surface of the second substrate, in which pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix;

a planar light source device which is disposed at a rear panel side and which has light sources illuminating the color liquid crystal display device from the rear panel side; and

a third substrate having a first surface facing the front panel and a second surface facing the first surface,

wherein the light sources emit first primary light corresponding to a first primary color of the light three primary colors formed of the first primary color, a second primary color, and a third primary color, and

the color liquid crystal display device further includes

second primary light emitting regions each disposed between a part of the second surface of the first substrate and a part of the first surface of the third substrate, both of which correspond to each second subpixel, composed of second primary light emitting particles emitting second primary light corresponding to the second primary color, and emitting the second primary light when excited by the first primary light emitted from the light sources and passing through each second subpixel;

third primary light emitting regions each disposed between a part of the second surface of the first substrate and a part of the first surface of the third substrate, both of which correspond to each third subpixel, composed of third primary light emitting particles emitting third primary light corresponding to the third primary color, and emitting the third primary light when excited by the first primary light emitted from the light sources and passing through each third subpixel; and

diffusion regions each disposed between a part of the second surface of the first substrate and a part of the first surface of the third substrate, both of which correspond to each first subpixel, and diffusing the first primary light emitted from the light sources and passing through each first subpixel.

7. The color liquid crystal display device assembly according to claim 6,

wherein the color liquid crystal display device further includes:

a light reflection film reflecting the second primary light and the third primary light between the second surface of the first substrate and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions.

8. The color liquid crystal display device assembly according to claim 6,

wherein the front panel further includes, between the second surface of the first substrate and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions:

first light focusing members focusing the first primary light on the diffusion regions;

second light focusing members focusing the second primary light on the second primary light emitting regions; and

third light focusing members focusing the third primary light on the third primary light emitting regions.

9. The color liquid crystal display device assembly according to claim 6,

wherein the color liquid crystal display device further includes:

a color filter between the first surface of the third substrate and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions.

10. The color liquid crystal display device assembly according to claim 9,

wherein the front panel further includes, between the second surface of the first substrate and the second primary light emitting regions, the third primary light emitting regions, and the diffusion regions:

first light focusing members focusing the first primary light on the diffusion regions;

second light focusing members focusing the second primary light on the second primary light emitting regions; and

third light focusing members focusing the third primary light on the third primary light emitting regions.

11. A color liquid crystal display device assembly comprising:

a color liquid crystal display device including

a front panel including a first substrate having a first surface and a second surface and a transparent first electrode formed on the first surface of the first substrate;

a rear panel including a second substrate having a first surface and a second surface and transparent second electrodes formed on the first surface of the second substrate; and

a liquid crystal material disposed between the first surface of the first substrate and the first surface of the second substrate, in which pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix; and

a planar light source device which is disposed at a rear panel side and which has light sources illuminating the color liquid crystal display device from the rear panel side,

wherein the light sources emit first primary light corresponding to a first primary color of the light three primary colors formed of the first primary color, a second primary color, and a third primary color, and

the rear panel further includes

second primary light emitting regions disposed between parts of the first surface of the second substrate corresponding to each second subpixel and respective transparent second electrodes, composed of second primary light emitting particles emitting second primary light corresponding to the second primary color, and emitting the second primary light when excited by the first primary light emitted from the light sources to illuminate each second subpixel;

third primary light emitting regions disposed between parts of the first surface of the second substrate corresponding to each third subpixel and respective transparent second electrodes, composed of third primary light emitting particles emitting third primary light corresponding to the third primary color, and emitting the third primary light when excited by the first primary light emitted from the light sources to illuminate each third subpixel;

second light focusing members disposed between the second primary light emitting regions and respective transparent second electrodes and focusing the second primary light emitted in the second primary light emitting regions on each second subpixel; and

third light focusing members disposed between the third primary light emitting regions and respective transparent second electrodes and focusing the third primary light emitted in the third primary light emitting regions on each third subpixel.

12. The color liquid crystal display device assembly according to claim 11,

wherein the rear panel further includes:

first light focusing members disposed between the first surface of the second substrate and respective transparent second electrodes and focusing the first primary light emitted from the light sources on each first subpixel.

13. The color liquid crystal display device assembly according to claim 11,

wherein the rear panel further includes:

a reflection film disposed between the first surface of the second substrate and the second primary light emitting regions and the third primary light emitting regions and reflecting the second primary light and the third primary light.

14. The color liquid crystal display device assembly according to claim 11,

wherein the front panel further includes:

a color filter disposed between the first surface of the first substrate and the transparent first electrode.

15. A color liquid crystal display device assembly comprising:

a color liquid crystal display device including

a front panel including a first substrate having a first surface and a second surface and a transparent first electrode formed on the first surface of the first substrate;

a rear panel including a second substrate having a first surface and a second surface and transparent second electrodes formed on the first surface of the second substrate; and

a liquid crystal material disposed between the first surface of the first substrate and the first surface of the second substrate, in which pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix;

a planar light source device which is disposed at a rear panel side and which has light sources illuminating the color liquid crystal display device from the rear panel side; and

a third substrate disposed between the rear panel and the planar light source device and having a first surface facing the rear panel and a second surface facing the planar light source device,

wherein the light sources emit first primary light corresponding to a first primary color of the light three primary colors formed of the first primary color, a second primary color, and a third primary color, and

the color liquid crystal display device further includes

second primary light emitting regions each disposed between a part of the first surface of the third substrate and a part of the second surface of the second substrate, both of which correspond to each second subpixel, composed of second primary light emitting particles emitting second primary light corresponding to the second primary color, and emitting the second primary light when excited by the first primary light emitted from the light sources to illuminate each second subpixel; and

third primary light emitting regions each disposed between a part of the first surface of the third substrate and a part of the second surface of the second substrate, both of which correspond to each third subpixel, composed of third primary light emitting particles emitting third primary light corresponding to the third primary color, and emitting the third primary light when excited by the first primary light emitted from the light sources to illuminate each third subpixel.

16. The color liquid crystal display device assembly according to claim 15,

wherein the color liquid crystal display device further includes

second light focusing members disposed between the first surface of the third substrate and the second surface of the second substrate and focusing the second primary light emitted in the second primary light emitting regions on each second subpixel, and

third light focusing members disposed between the first surface of the third substrate and the second surface of the second substrate and focusing the third primary light emitted in the third primary light emitting regions on each third subpixel.

17. The color liquid crystal display device assembly according to claim 16,

wherein the color liquid crystal display device further includes:

first light focusing members disposed between the first surface of the third substrate and the second surface of the second substrate and focusing the first primary light emitted from the light sources on each first subpixel.

18. The color liquid crystal display device assembly according to claim 15,

wherein the color liquid crystal display device further includes:

a reflection film disposed between the first surface of the third substrate and the second primary light emitting regions and the third primary light emitting regions and reflecting the second primary light and the third primary light.

19. The color liquid crystal display device assembly according to claim 15,

wherein the front panel further includes:

a color filter disposed between the first surface of the first substrate and the transparent first electrode.