Light-reflection type liquid crystal display device and method of fabricating the same

• US 20030223025A1
• Filed: 05/30/2003
• Published: 12/04/2003
• Est. Priority Date: 05/30/2002
• Status: Active Grant

• Current Assignee: NLT Technologies, Ltd. (Tianma Microelectronics Company Limited)
• Original Assignee: NEC LCD Technologies Limited (Tianma Microelectronics Company Limited)
• Inventors: Fujishiro, Fumihiko
• Granted Patent: US 6,891,587 B2
• Time in Patent Office: Days
• US Class Current: 349/113
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 1/133616 Front illuminating devices

Abstract

A light-reflection type liquid crystal display device includes (a) a liquid crystal display panel, (b) a polarizer mounted on the liquid crystal display panel, (c) a light-guide mounted on the polarizer, (d) a resin layer sandwiched between the polarizer and the light-guide for fixing the polarizer and the light-guide to each other, (e) a light-source arranged adjacent to an end of the light-guide for supplying light to the light-guide, and (D a frame having a bottom and a wall defining an opening which has the same contour as that of the light-guide. The light-guide is positioned relative to the polarizer by being lowered along an inner wall of the frame through the opening onto the polarizer.

Claims

1. A method of fabricating a light-reflection type liquid crystal display device including at least a liquid crystal display panel, a polarizer lying on said liquid crystal display panel, a light-guide lying on said polarizer, and a resin layer sandwiched between said polarizer and said light-guide for fixing said polarizer and said light-guide to each other, comprising the steps of:

(a) fixing said liquid crystal display panel on which said polarizer is mounted, onto a bottom of a frame having an opening which has the same contour as that of said light-guide;

(b) dropping resin onto said polarizer;

(c) lowering said light-guide along an inner wall of said frame through said opening onto said polarizer; and

(d) hardening said resin.

2. A light-reflection type liquid crystal display device comprising:

(a) a liquid crystal display panel;

(b) a polarizer mounted on said liquid crystal display panel;

(c) a light-guide mounted on said polarizer;

(d) a resin layer sandwiched between said polarizer and said light-guide for fixing said polarizer and said light-guide to each other;

(e) a light-source arranged adjacent to an end of said light-guide for supplying light to said light-guide; and

(f) a frame having a bottom and a wall defining an opening which has the same contour as that of said light-guide,

said light-guide being positioned relative to said polarizer by being lowered along an inner wall of said frame through said opening onto said polarizer.

3. The light-reflection type liquid crystal display device as set forth in claim 2, wherein said opening is larger than a contour of said light-guide by a predetermined length.

4. The light-reflection type liquid crystal display device as set forth in claim 3, wherein said predetermined length is equal to a tolerance allowable when said liquid crystal display panel and said light-guide are positioned relative to each other.

5. The light-reflection type liquid crystal display device as set forth in claim 2, wherein said liquid crystal display panel is comprised of two substrates adhered to each other through adhesive, said frame is formed at a bottom thereof with an opening, and an inner edge of said opening is located more outwardly than said adhesive.

6. A light-reflection type liquid crystal display device comprising:

(a) a liquid crystal display panel;

(b) a polarizer mounted on said liquid crystal display panel;

(c) a light-guide mounted on said polarizer;

(d) a resin layer sandwiched between said polarizer and said light-guide for fixing said polarizer and said light-guide to each other;

(e) a light-source arranged adjacent to an end of said light-guide for supplying light to said light-guide; and

(f) a frame having a bottom and a wall defining an opening which has the same contour as that of said light-guide,

said polarizer having an edge extending outwardly beyond an edge of said light-guide,

said wall of said frame having an outwardly projecting portion such that said polarizer can be accommodated in said frame,

said light-guide being positioned relative to said polarizer by being lowered along an inner wall of said frame through said opening onto said polarizer.

7. The light-reflection type liquid crystal display device as set forth in claim 6, wherein said opening is larger than a contour of said light-guide by a predetermined length.

8. The light-reflection type liquid crystal display device as set forth in claim 7, wherein said predetermined length is equal to a tolerance allowable when said liquid crystal display panel and said light-guide are positioned relative to each other.

9. The light-reflection type liquid crystal display device as set forth in claim 6, wherein said liquid crystal display panel is comprised of two substrates adhered to each other through adhesive, said frame is formed at a bottom thereof with an opening, and an inner edge of said opening is located more outwardly than said adhesive.

10. A light-reflection type liquid crystal display device comprising:

(a) a liquid crystal display panel;

(b) a polarizer mounted on said liquid crystal display panel;

(c) a light-guide mounted on said polarizer;

(d) a resin layer sandwiched between said polarizer and said light-guide for fixing said polarizer and said light-guide to each other; and

(e) a light-source arranged adjacent to an end of said light-guide for supplying light to said light-guide,

said polarizer having an edge extending outwardly beyond an edge of said light-guide.

11. The light-reflection type liquid crystal display device as set forth in claim 10, wherein said light-guide has a non-light-guide area along an outer edge thereof.

12. A light-reflection type liquid crystal display device comprising:

(a) a liquid crystal display panel;

(b) a polarizer mounted on said liquid crystal display panel;

(c) a light-guide mounted on said polarizer;

(d) a resin layer sandwiched between said polarizer and said light-guide for fixing said polarizer and said light-guide to each other; and

(e) a light-source arranged adjacent to an end of said light-guide for supplying light to said light-guide,

said polarizer having an edge extending outwardly beyond an edge of said liquid crystal display panel.

13. The light-reflection type liquid crystal display device as set forth in claim 12, wherein said light-guide has a non-light-guide area along an outer edge thereof.