Panel structure, its manufacturing method, and projection system

Patent metadata

Field	Value
Publication number	US-10416491-B2
Application number	US-201715556253-A
Country	US
Kind code	B2
Filing date	Mar 10, 2017
Priority date	Sep 9, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An embodiment of the present disclosure provides a panel structure, its manufacturing method and a projection system, which can improve optical efficiency of the projection system and reduce the volume of the projection system. The panel structure includes: a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate; a reflective electrode at a side of the first substrate facing the second substrate; a transparent beam-splitting film disposed between the reflective electrode and the liquid crystal layer; and a common electrode disposed at a side of the second substrate facing the first substrate.

First claim

The invention claimed is:

1. A panel structure, comprising:
a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate;
a reflective electrode disposed at a side of the first substrate facing the second substrate;
a transparent beam-splitting film disposed between the reflective electrode and the liquid crystal layer; and an optical coating disposed between the transparent beam-splitting film and the liquid crystal layer, wherein the transparent beam-splitting film comprises at least one step group: the step group comprises three steps, heights of the three steps satisfy an equation set (1) and an equation set (2):

{

2
⁢
π

λ
r

⁢

(

n
1

-

n
2

)

⁢
2
⁢

(

h
1

-

h
3

)

=

2
⁢

m

1
,
r

⁢
π

+

4
⁢
π

3

2
⁢
π

λ
g

⁢

(

n
1

-

n
2

)

⁢
2
⁢

(

h
1

-

h
3

)

=

2
⁢

m

1
,
g

⁢
π

⁢

2
⁢
π

λ
b

⁢

(

n
1

-

n
2

)

⁢
2
⁢

(

h
1

-

h
3

)

Assignees

• Boe Technology Group Co Ltd

Inventors

• Guo Kang

Classifications

• G02F1/1335 Primary

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02F1/1341

  Filling or closing of cells · CPC title

• G02F2203/34

  Colour display without the use of colour mosaic filters · CPC title

• G03B21/2073

  Polarisers in the lamp house (peculiar to electronic spatial light modulators H04N9/3197) · CPC title

• G02F1/133504

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title