LIQUID CRYSTAL DISPLAY

• US 20090316087A1
• Filed: 01/05/2009
• Published: 12/24/2009
• Est. Priority Date: 06/24/2008
• Status: Active Grant

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: CHIEN, SHIH-CHE
• Granted Patent: US 8,218,109 B2
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters

Abstract

A liquid crystal display includes a first flat glass substrate, an opposite second flat glass substrate, a liquid crystal layer sandwiched therebetween, a backlight module disposed adjacent to the first flat glass substrate, a color filter disposed adjacent to the second flat glass substrate, a bandpass filter member disposed on the color filter. The bandpass filter member is configured for allowing light of a given spectrum emitted from the backlight module to pass therethrough and blocking light that is not in the given spectrum from passing therethrough, and a touch panel disposed adjacent to the bandpass filter member.

Claims

1. A liquid crystal display, comprising:

a first flat glass substrate, an opposite second flat glass substrate, a liquid crystal layer sandwiched therebetween;

a backlight module disposed adjacent to the first flat glass substrate;

a color filter disposed adjacent to the second flat glass substrate;

a bandpass filter member disposed on the color filter, the bandpass filter member being configured for allowing light of a given spectrum emitted from the backlight module to pass therethrough, and blocking light that is not in the given spectrum from passing therethrough; and

a touch panel disposed adjacent to the bandpass filter member.

2. The liquid crystal display as claimed in claim 1, wherein the bandpass filter member comprises a bandpass filter film including a number of alternately arranged first and second layers, the bandpass filter film is proximate to the touch panel.

3. The liquid crystal display as claimed in claim 1, wherein the bandpass filter member comprises a transparent substrate and a bandpass filter film formed on a surface thereof, the bandpass filter film being adjacent to the touch panel and including a number of alternately arranged first and second layers.

4. The liquid crystal display as claimed in claim 2, wherein the first layers are comprised of a first material, a refractive index of the first material is ranged from 2.1 to 2.5, the second layers are comprised of a second material, a refractive index of the second material is ranged from 1.3 to 1.5.

5. The liquid crystal display as claimed in claim 3, wherein the first are alternately comprised of a first material and a refractive index of the first material is ranged from 2.1 to 2.5, the second layers are comprised of a second material, a refractive index of the second material is ranged from 1.3 to 1.5.

6. The liquid crystal display as claimed in claim 4, the first material is selected from a group consisting of Ta₂O₅, TiO₂, Ti₃O₅, and Nb₂O₅, the second material is SiO₂.

7. The liquid crystal display as claimed in claim 5, the first material is selected from a group consisting of Ta₂O₅, TiO₂, Ti₃O₅, and Nb₂O₅, the second material is SiO₂.

8. The liquid crystal display as claimed in claim 1, further comprising a transreflective layer disposed between the first flat glass substrate and the backlight module, the transreflective layer including a number of alternately arranged reflecting regions and transmitting regions.

9. A liquid crystal display, comprising:

a first flat glass substrate, an opposite second flat glass substrate, a liquid crystal layer sandwiched therebetween;

a backlight module disposed adjacent to the first flat glass substrate;

a color filter disposed between the first flat glass substrate and the backlight module;

a bandpass filter member disposed on the second flat glass substrate, the bandpass filter member being configured for allowing a light of a given spectrum emitted from the backlight module to pass therethrough, and blocking light that is not in the given spectrum from passing therethrough; and

an touch panel disposed adjacent to the bandpass filter member.

10. The liquid crystal display as claimed in claim 9, wherein the bandpass filter member comprises a bandpass filter film including a number of alternately arranged first and second layers, the bandpass filter film is proximate to the touch panel.

11. The liquid crystal display as claimed in claim 9, wherein the bandpass filter member comprises a transparent substrate and a bandpass filter film formed on a surface thereof, the bandpass filter film being adjacent to the touch panel and including a number of alternately arranged first and second layers.

12. The liquid crystal display as claimed in claim 10, wherein the first layers are comprised of a first material, a refractive index of the first material is ranged from 2.1 to 2.5, the second layers are comprised of a second material, a refractive index of the second material is ranged from 1.3 to 1.5.

13. The liquid crystal display as claimed in claim 11, wherein the first are alternately comprised of a first material, a refractive index of the first material is ranged from 2.1 to 2.5, the second layers are comprised of a second material, a refractive index of the second material is ranged from 1.3 to 1.5.

14. The liquid crystal display as claimed in claim 12, the first material is selected from a group consisting of Ta₂O₅, TiO₂, Ti₃O₅, and Nb₂O₅, the second material is SiO₂.

15. The liquid crystal display as claimed in claim 13, the first material is selected from a group consisting of Ta₂O₅, TiO₂, Ti₃O₅, and Nb₂O₅, the second material is SiO₂.

16. The liquid crystal display as claimed in claim 9, further comprising a transreflective layer disposed between the first flat glass substrate and the backlight module, the transreflective layer including a number of alternately arranged reflecting regions and transmitting regions.