Liquid crystal display and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10042110-B2
Application number	US-201514793100-A
Country	US
Kind code	B2
Filing date	Jul 7, 2015
Priority date	Jul 21, 2014
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A liquid crystal display includes a display panel having a lower substrate, an upper substrate disposed opposite to the lower substrate, and a liquid crystal layer disposed between the lower and upper substrates, a light source which emits light, a glass light guide plate which diffuses the light from the light source to the display panel, and a first bonding member which bonds the lower substrate to the glass light guide plate.

First claim

What is claimed is:

1. A liquid crystal display comprising:
a display panel comprising:
a lower substrate which comprises glass;
an upper substrate disposed opposite to the lower substrate; and
a liquid crystal layer disposed between the lower substrate and the upper substrate;

a light source which emits light;
a glass light guide plate which diffuses the light from the light source to the display panel; and
a first bonding member which comprises glass frit and bonds the lower substrate to the glass light guide plate.

2. The liquid crystal display of claim 1 , wherein the upper substrate comprises glass.

3. The liquid crystal display of claim 1 , further comprising:
a plurality of optical films disposed between the display panel and the light guide plate,
wherein a thickness of the first bonding member is equal to or larger than a thickness of the plurality of optical films.

4. The liquid crystal display of claim 1 , wherein a plurality of light emission patterns is defined on a first surface of the glass light guide plate facing the lower substrate.

5. The liquid crystal display of claim 1 , further comprising:
a transparent layer disposed on a first surface of the glass light guide plate facing the lower substrate.

6. The liquid crystal display of claim 1 , further comprising:
a reflecting layer disposed on a second surface of the glass light guide plate, which is opposite to a first surface of the glass light guide plate facing the lower substrate.

7. The liquid crystal display of claim 6 , wherein the reflecting layer comprises a first reflecting film comprising silver (Ag), aluminum (Al), palladium (Pd), copper (Cu), an alloy layer of the aluminum (Al), palladium (Pd), copper (Cu) or a combination thereof.

8. The liquid crystal display of claim 7 , wherein
the reflecting layer further comprises any one of second or third reflecting films disposed between the first reflecting film and the glass light guide plate,
the second reflecting film has a first refractive index, and
the third reflecting film has a refractive index different from the first refractive index.

9. A method of manufacturing a liquid crystal display comprising:
providing light emission patterns on a glass light guide plate;
providing a reflecting layer on the glass light guide plate;
attaching a printed circuit board, on which a light source is mounted, to the glass light guide plate;
providing a plurality of optical films on a lower substrate of a display panel, wherein the lower substrate comprises glass; and
bonding the lower substrate to the glass light guide plate using a bonding member which comprises glass frit.

10. The method of claim 9 , wherein the providing the light emission patterns on the glass light guide plate comprises forming the light emission patterns on a first surface of the glass light guide plate facing the lower substrate.

11. The method of claim 9 , wherein the forming the light emission patterns on the glass light guide plate comprises:
washing the glass light guide plate;
treating the glass light guide plate with plasma; and
dropping an ultraviolet ink on the glass light guide plate using an inkjet device, and curing the ultraviolet ink.

12. The method of claim 9 , wherein the providing the reflecting layer on the glass light guide plate comprises providing the reflecting layer on a second surface of the glass light guide plate, which is opposite to the first surface of the glass light guide plate facing the lower substrate.

13. The method of claim 12 , wherein the providing the reflecting layer on the glass light guide plate comprises providing a first reflecting film on the glass light guide plate, wherein the first reflecting film comprises silver (Ag), aluminum (Al), palladium (Pd), copper (Cu), an alloy layer of the aluminum (Al), the palladium (Pd) and the copper (Cu), or a combination thereof.

14. The method of claim 12 , wherein the providing the reflecting layer on the glass light guide plate further comprises:
providing a third reflecting film on the glass light guide plate, wherein the third reflecting film has a second refractive index;
providing a second reflecting film on the third reflecting film, wherein the second reflecting film has a first refractive index different from the second refractive index; and
depositing the silver (Ag), the aluminum (Al), the palladium (Pd), the copper (Cu), or the alloy layer of the aluminum (Al), the palladium (Pd) and the copper (Cu) on the second reflecting film, to provide the first reflecting film.

15. The method of claim 9 , wherein the bonding the lower substrate to the glass light guide plate using the bonding member comprises:
applying the glass frit to the lower substrate;
melting the glass frit; and
joining the glass light guide plate to the melted glass frit.

16. The method of claim 9 , wherein a thickness of the bonding member is equal to or larger than a thickness of the plurality of optical films.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Se-Ki

Classifications

• G02B6/005

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

• G02B6/0043

  provided on the surface of the light guide · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/133605 Primary

  including specially adapted reflectors · CPC title