Display device

Patent metadata

Field	Value
Publication number	US-2016238773-A1
Application number	US-201514937877-A
Country	US
Kind code	A1
Filing date	Nov 11, 2015
Priority date	Feb 17, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

A display device includes a first light source module, a display panel and a transparent filling. The first light source module includes at least one first light source and a first light guide plate (LGP). The first LGP includes a first light-incident surface and a first light-emitting surface. The first light-emitting surface connects the first light-incident surface. The display panel is disposed adjacent to the first LGP. The transparent filling connects the display panel and the first light-emitting surface. The refractive index of the transparent filling is smaller than that of the first LGP and smaller than or equal to that of a surface material of the display panel. The first light source emits a first light beam into the first LGP through the first light-incident surface, and the first light beam is emitted from the first light-emitting surface and transmitted to the display panel through the transparent filling.

First claim

hat is claimed is:

1 . A display device, comprising:
a first light source module, comprising a first light source and a first light guide plate, wherein the first light guide plate comprises a first light-incident surface and a first light-emitting surface connected to the first light-incident surface; a display panel, disposed adjacent to the first light guide plate, wherein the first light-emitting surface faces the display panel; and a transparent filling, connecting the display panel and the first light-emitting surface, wherein a refractive index of the transparent filling is smaller than a refractive index of the first light guide plate and smaller than or equal to a refractive index of a surface material of the display panel, wherein the first light source emits a first light beam into the first light guide plate through the first light-incident surface, and the first light beam is then emitted from the first light-emitting surface and transmitted to the display panel through the transparent filling.

2 . The display device according to claim 1 , wherein the first light-emitting surface has a plurality of optical microstructures.

3 . The display device according to claim 1 , further comprising a second light source module, comprising a second light source and a second light guide plate, wherein the second light guide plate comprises a second light-incident surface and a second light-emitting surface connected to the second light-incident surface, the second light-emitting surface faces the display panel, the display panel is positioned between the first light-emitting surface and the second light-emitting surface, and the second light source emits a second light beam into the second light guide plate through the second light-incident surface, and the second light beam is emitted from the second light-emitting surface and transmitted to the display panel.

4 . The display device according to claim 3 , wherein the second light-emitting surface has a plurality of optical microstructures.

5 . The display device according to claim 3 , wherein the transparent filling is further disposed between the display panel and the second light guide plate, and the transparent filling connects the display panel and the second light-emitting surface.

6 . The display device according to claim 5 , wherein the first light guide plate and the second light guide plate have a same material.

7 . The display device according to claim 3 , further comprising a control unit electrically connecting the first light source module and the second light source module, wherein the control unit respectively controls a switch and brightness of the first light source and the second light source.

8 . The display device according to claim 1 , wherein the display panel is a transmissive liquid crystal display panel, a semi-transmissive liquid crystal display panel, or an electrophoresis display panel.

9 . The display device according to claim 1 , wherein the transparent filling is in a liquid state, a gaseous state, a solid state, or a mixture thereof.

10 . A display device, comprising:
a first light source module, comprising a first light source and a first light guide plate, wherein the first light guide plate comprises a first light-incident surface and a first light-emitting surface connected to the first light-incident surface; a second light source module, comprising a second light source and a second light guide plate, wherein the second light guide plate comprises a second light-incident surface and a second light-emitting surface connected to the second light-incident surface; and a display panel, disposed between the first light-emitting surface and the second light-emitting surface, wherein the first light-emitting surface and the second light-emitting surface face the display panel, wherein the first light source emits a first light beam into the first light guide plate through the first light-incident surface, and the first light beam is emitted from the first light-emitting surface and transmitted to the display panel, and the second light source emits a second light beam into the second light guide plate through the second light-incident surface, and the second light beam is emitted from the second light-emitting surface and transmitted to the display panel.

11 . The display device according to claim 10 , wherein the first light-emitting surface and the second light-emitting surface both have a plurality of optical microstructures.

12 . The display device according to claim 10 , further comprising a transparent filling disposed between the first light guide plate and the display panel and between the second light guide plate and the display panel, wherein the transparent filling connects the display panel to the first light-emitting surface and the second light-emitting surface, wherein a refractive index of the transparent filling is smaller than refractive indices of the first light guide plate and the second light guide plate, and smaller than or equal to a refractive index of a surface material of the display panel.

13 . The display device according to claim 12 , wherein the transparent filling is in a liquid state, a gaseous state, a solid state, or a mixture thereof.

14 . The display device according to claim 10 , wherein the first light guide plate and the second light guide plate have a same material.

15 . The display device according to claim 10 , further comprising a control unit electrically connecting the first light source module and the second light source module, wherein the control unit respectively controls a switch and brightness of the at least one first light source and the at least one second light source.

16 . The display device according to claim 10 , wherein the display panel is a transmissive liquid crystal display panel, a semi-transmissive liquid crystal display panel, or an electrophoresis display panel.

Assignees

• E Ink Holdings Inc

Inventors

• Shei Tsai-Wei
• Huang Hsin-Tao

Classifications

• G02B6/0036

  2-D arrangement of prisms, protrusions, indentations or roughened surfaces · CPC title

• G02B6/005 Primary

  provided by one optical element, or plurality thereof, placed on the light output side of the light guide · CPC title

• G02B6/0076

  Stacked arrangements of multiple light guides of the same or different cross-sectional area · CPC title

• G02B6/0083

  Details of electrical connections of light sources to drivers, circuit boards, or the like · CPC title

• G02B6/0068

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title