Illumination Device, Dedicated Eyeglasses Thereof, Analyzer Thereof and an Illumination System

• US 20160266428A1
• Filed: 09/22/2014
• Published: 09/15/2016
• Est. Priority Date: 06/19/2014
• Status: Abandoned Application

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Li, Wenbo, Wu, Yanbing
• Application Number:
  US14/648,128
• Publication Number:
  US 20160266428A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02C 7/104 having spectral characteristics for purposes other than sun-protection
• CPC Class Codes: G02C 7/12 Polarisers
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 1/13363 Birefringent elements, e.g. for optical compensation
• CPC Class Codes: G02F 1/133638 Waveplates, i.e. plates with a retardation value of lambda/n
• CPC Class Codes: G02F 2413/01 Number of plates being 1
• CPC Class Codes: G02F 2413/05 Single plate on one side of the LC cell
• CPC Class Codes: G02F 2413/08 with a particular optical axis orientation
• CPC Class Codes: H04N 13/337 using polarisation multiplexing

Abstract

An illumination device, dedicated eyeglasses thereof, analyzer thereof and an illumination system are provided. The illumination device includes a support member and a liquid crystal display panel mounted on the support member, and the liquid crystal display panel is provided with a first polarization sheet only at a light incident side. The liquid crystal display panel in the illumination device emits white light for the information contained therein cannot be observed by naked eye, and hence can be used as an illumination lamp; when the illumination device is viewed through the dedicated eyeglasses or the analyzer, the secret information displayed on the liquid crystal display panel can be observed.

Claims

1. An illumination device, comprising:

a support member and a liquid crystal display panel mounted on the support member, wherein,

the liquid crystal display panel is provided with a first polarization sheet only at a light incident side.

2. The illumination device of claim 1, wherein,

the liquid crystal display panel is provided with a quarter-wave plate at a light emergent side, the quarter-wave plate has a fast axis forming a predetermined angle with a polarization axis of the first polarization sheet, and the predetermined angle is greater than or equal to 0 degree and is smaller than or equal to 90 degree.

3. The illumination device of claim 1, wherein the liquid crystal display panel comprises:

an array substrate and a counter substrate opposite to each other; and

a liquid crystal layer provided between the counter substrate and the array substrate;

wherein,

a black matrix layer and a color filter layer are provided at a side of the counter substrate facing the array substrate or at a side of the array substrate facing the counter substrate;

or

only the black matrix layer is provided at the side of the counter substrate facing the array substrate or at the side of the array substrate facing the counter substrate.

4. The illumination device of claim 1, further comprising:

a transflective layer provided at a light emergent side of the liquid crystal display panel.

5. The illumination device of claim 4, wherein the transflective layer is provided on a transparent substrate at a side of the counter substrate facing away from the array substrate;

or

the transflective layer is provided on a surface of the counter substrate facing the array substrate and/or a surface of the counter substrate facing away from the array substrate.

6. The illumination device of claim 5, wherein upon the liquid crystal display panel being provided with the quarter-wave plate at the light emergent side and the transflective layer being provided on the transparent substrate,

the transflective layer is provided on the transparent substrate between the counter substrate and the quarter-wave plate;

or

the transflective layer is provided on the transparent substrate at the side of the counter substrate facing away from the array substrate and at a side of the quarter-wave plate facing away from the array substrate.

7. The illumination device of claim 2, wherein the liquid crystal display panel is provided with the quarter-wave plate at the light emergent side, and the predetermined angle is 45 degree.

8. A pair of dedicated eyeglasses configured for the illumination device of claim 1, comprising lenses each having a second polarization sheet.

9. The pair of dedicated eyeglasses of claim 8, wherein

each of the lenses further comprises a quarter-wave plate, the quarter-wave plate and the second polarization sheet are sequentially arranged in a direction from a light incident side towards a light emergent side of the lense;

an angle formed between a fast axis of the quarter-wave plate and a polarization axis of the second polarization sheet is equal with a predetermined angle formed between a fast axis of the quarter-wave plate and a polarization axis of the first polarization sheet and the predetermined angle is greater than or equal to 0 degree and is smaller than or equal to 90 degree;

or, the predetermined angle plus the angle formed between the fast axis of the quarter-wave plate and the polarization axis of the second polarization sheet equals 90 degree.

10. An analyzer configured for the illumination device of claim 1, comprising a second polarization sheet.

11. The analyzer of claim 10, further comprising a quarter-wave plate, wherein

the quarter-wave plate and the second polarization sheet are sequentially arranged in a direction from a light incident side towards a light emergent side;

an angle formed between a fast axis of the quarter-wave plate and a polarization axis of the second polarization sheet is equal with a predetermined angle formed between a fast axis of the quarter-wave plate and a polarization axis of the first polarization sheet and the predetermined angle is greater than or equal to 0 degree and is smaller than or equal to 90 degree;

or, the predetermined angle plus the angle formed between the fast axis of the quarter-wave plate and the polarization axis of the second polarization sheet equals 90 degree.

14. The illumination device of claim 2, wherein the liquid crystal display panel comprises:

an array substrate and a counter substrate opposite to each other; and

a liquid crystal layer provided between the counter substrate and the array substrate;

wherein,

a black matrix layer and a color filter layer are provided at a side of the counter substrate facing the array substrate or at a side of the array substrate facing the counter substrate;

or

only the black matrix layer is provided at the side of the counter substrate facing the array substrate or at the side of the array substrate facing the counter substrate.

15. The illumination device of claim 2, further comprising:

a transflective layer provided at the light emergent side of the liquid crystal display panel.

16. The illumination device of claim 3, further comprising:

a transflective layer provided at a light emergent side of the liquid crystal display panel.

17. The illumination device of claim 15, wherein the transflective layer is provided on a transparent substrate at a side of the counter substrate facing away from the array substrate;

or

the transflective layer is provided on a surface of the counter substrate facing the array substrate and/or a surface of the counter substrate facing away from the array substrate.

18. The illumination device of claim 16, wherein the transflective layer is provided on a transparent substrate at a side of the counter substrate facing away from the array substrate;

or

the transflective layer is provided on a surface of the counter substrate facing the array substrate and/or a surface of the counter substrate facing away from the array substrate.

19. The illumination device of claim 3, wherein the liquid crystal display panel is provided with the quarter-wave plate at a light emergent side, and a predetermined angle formed between a fast axis of the quarter-wave plate and a polarization axis of the first polarization sheet is 45 degree.

20. The illumination device of claim 4, wherein the liquid crystal display panel is provided with the quarter-wave plate at a light emergent side, and a predetermined angle formed between a fast axis of the quarter-wave plate and a polarization axis of the first polarization sheet is 45 degree.

12. An illumination system, comprising:

an illumination device comprising a support member and a liquid crystal display panel mounted on the support member, wherein, the liquid crystal display panel is provided with a first polarization sheet only at light incident side; and

a pair of dedicated eyeglasses comprising lenses each having a second polarization sheet, or, an analyzer comprising a second polarization sheet, wherein the analyzer is provided at a certain distance from the illumination device.

13. The illumination system of claim 12, wherein upon the liquid crystal display panel being provided with a quarter-wave plate at a light emergent side, the pair of dedicated eyeglasses comprises lenses each having the quarter-wave plate or the analyzer comprises the quarter-wave plate.