Liquid crystal display device

• US 8,730,416 B2
• Filed: 12/01/2011
• Issued: 05/20/2014
• Est. Priority Date: 12/17/2010
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Koyama, Jun
• Primary Examiner(s): DUDEK, JAMES A
• Application Number:
  US13/308,601
• Publication Number:
  US 20120154696A1
• Time in Patent Office: 901 Days
• Field of Search: 349/15
• US Class Current: 349/15
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/30 involving parallax barriers
• CPC Class Codes: G02F 1/1323 Arrangements for providing a switchable viewing angle
• CPC Class Codes: G02F 1/133621 providing coloured light G02F1/133617, G02F1/133533 take precedence
• CPC Class Codes: G02F 1/133622 Colour sequential illumination
• CPC Class Codes: G02F 1/13793 Blue phases
• CPC Class Codes: G09G 2310/0224 Details of interlacing
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: H04N 13/302 for viewing without the aid of special glasses, i.e. using autostereoscopic displays
• CPC Class Codes: H04N 13/324 Colour aspects

Abstract

A liquid crystal display device includes a pixel area including a first display region and a second display region, a light supply portion sequentially supplying a plurality of lights having different hues to the first and second display regions and an optical system. Pairs of pixels are arranged in each of the first and second display regions. The pair of pixels is composed of a right-eye pixel and a left-eye pixel. The plurality of pieces of light is supplied to the first and second display regions to emit a first light with the right-eye pixel and a second light with the left-eye pixel. The optical system orients the travel direction of the first light to a right eye of a viewer and the travel direction of the second light to a left eye of the viewer.

Claims

1. A liquid crystal display device comprising:

a pixel area comprising a first display region and a second display region;

a light supply portion configured to supply a plurality of pieces of light having different hues to each of the first display region and the second display region; and

an optical system,

wherein two pieces of light supplied to each of the first and second display regions in parallel have different hues, the two pieces of light being part of the plurality of pieces of light,

wherein a plurality of pairs of pixels are arranged in each of the first display region and the second display region, each of the plurality of pairs of pixels being composed of a right-eye pixel and a left-eye pixel,

wherein the plurality of pieces of light is supplied to the first display region and the second display region to emit a first light with the right-eye pixel and a second light with the left-eye pixel, and

wherein the optical system makes a travel direction of the first light differ from a travel direction of the second light.

2. The liquid crystal display device according to claim 1, wherein a liquid crystal layer exhibiting a blue phase is included in the pixel area.

3. The liquid crystal display device according to claim 1, wherein the optical system is a parallax barrier, a lenticular lens, or a microlens array.

4. A liquid crystal display device comprising:

a pixel area comprising a first display region and a second display region;

a light supply portion configured to supply a plurality of pieces of light having different hues to each of the first display region and the second display region; and

an optical system,

wherein two pieces of light supplied to each of the first and second display regions in parallel have different hues, the two pieces of light being part of the plurality of pieces of light,

wherein a plurality of pairs of pixels are arranged in each of the first display region and the second display region, each of the plurality of pairs of pixels being composed of adjacent pixels,

wherein the plurality of pieces of light is supplied to the first display region and the second display region to emit a first light with one of the pair of pixels and a second light with the other one of the pair of pixels, and

wherein the optical system orients a travel direction of the first light to a right eye of a viewer and a travel direction of the second light to a left eye of the viewer.

5. The liquid crystal display device according to claim 4, wherein a liquid crystal layer exhibiting a blue phase is included in the pixel area.

6. The liquid crystal display device according to claim 4, wherein the optical system is a parallax barrier, a lenticular lens, or a microlens array.

7. A liquid crystal display device comprising:

a pixel area comprising a first display region and a second display region;

a light supply portion configured to supply a plurality of pieces of light having different hues to each of the first display region and the second display region; and

an optical system,

wherein two pieces of light supplied to each of the first and second display regions in parallel have different hues, the two pieces of light being part of the plurality of pieces of light,

wherein a plurality of pairs of pixels are arranged in each of the first display region and the second display region, each of the plurality of pairs of pixels being composed of a right-eye pixel and a left-eye pixel,

wherein the plurality of pieces of light is supplied to the first display region and the second display region to emit a first light with the right-eye pixel and a second light with the left-eye pixel,

wherein the optical system makes a travel direction of the first light differ from a travel direction of the second light,

wherein the pixel comprises a transistor and a liquid crystal element receiving an image signal through the transistor, and

wherein the transistor has an oxide semiconductor in an active layer.

8. The liquid crystal display device according to claim 7, wherein a liquid crystal layer exhibiting a blue phase is included in the pixel area.

9. The liquid crystal display device according to claim 7, wherein the optical system is a parallax barrier, a lenticular lens, or a microlens array.

10. The liquid crystal display device according to claim 7, wherein the oxide semiconductor is an In-Ga-Zn-based oxide semiconductor.

11. The liquid crystal display device according to claim 7, wherein a hydrogen concentration in the oxide semiconductor is less than or equal to 5×

10¹⁹/cm³.

12. A liquid crystal display device comprising:

a pixel area comprising a first display region and a second display region;

a light supply portion configured to supply a plurality of pieces of light having different hues to each of the first display region and the second display region; and

an optical system,

wherein two pieces of light supplied to each of the first and second display regions in parallel have different hues, the two pieces of light being part of the plurality of pieces of light,

wherein a plurality of pairs of pixels are arranged in each of the first display region and the second display region, each of the plurality of pairs of pixels being composed of adjacent pixels,

wherein the plurality of pieces of light is supplied to the first display region and the second display region to emit a first light with one of the pair of pixels and a second light with the other one of the pair of pixels,

wherein the optical system orients a travel direction of the first light to a right eye of a viewer and a travel direction of the second light to a left eye of the viewer,

wherein the pixel comprises a transistor and a liquid crystal element receiving an image signal through the transistor, and

wherein the transistor has an oxide semiconductor in an active layer.

13. The liquid crystal display device according to claim 12, wherein a liquid crystal layer exhibiting a blue phase is included in the pixel area.

14. The liquid crystal display device according to claim 12, wherein the optical system is a parallax barrier, a lenticular lens, or a microlens array.

15. The liquid crystal display device according to claim 12, wherein the oxide semiconductor is an In-Ga-Zn-based oxide semiconductor.

16. The liquid crystal display device according to claim 12, wherein a hydrogen concentration in the oxide semiconductor is less than or equal to 5×

10¹⁹/cm³.