Light-inverse type guidelight plate

• US 20050073825A1
• Filed: 10/06/2003
• Published: 04/07/2005
• Est. Priority Date: 10/06/2003
• Status: Active Grant

• Current Assignee: Chia Shin Kuo
• Original Assignee: Chia Shin Kuo
• Inventors: Kuo, Chia Shin
• Granted Patent: US 7,114,839 B2
• Time in Patent Office: Days
• US Class Current: 362/26
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer

Abstract

A light-inverse type guidelight plate adopted for a backlight module having at least one lighting member includes a reflection portion, a reflecting member partially covering the reflection portion, and a light-guiding portion connecting the reflection portion for providing a displaying region. Wherein the light-guiding portion locates behind the lighting member'"'"'s back, which faces the reflecting member and dispose in a slot of the reflection portion. The light-guiding portion is shaped variously to meet requirements. The reflection portion has a reflection face, which reflects light emitted from the lighting member to the light-guiding portion to get a high uniformity thereof.

Claims

1. A light-inverse type guidelight plate adopted for a backlight module having at least one lighting member, and comprising:

at least one reflection portion having at least one reflection face, a transmitting face connecting to the reflection face, and at least one slot being concave on the transmitting face and receiving the lighting member;

a reflecting member covering the reflection portion; and

a predetermined-shaped light-guiding portion connecting the transmitting face for providing a displaying region thereon, the light guiding portion being less than 2 mm;

wherein

the light-guiding portion locates behind the lighting member'"'"'s back, which the lighting member faces the reflecting member, and dispose in the slot of the reflection portion.

2. The light-inverse type guidelight plate as the claim 1, wherein the lighting member is a LED.

3. The light-inverse type guidelight plate as the claim 1, wherein the reflection face is arc-shaped.

4. The light-inverse type guidelight plate as the claim 3, wherein the reflection portion has a pair of the reflection faces connecting to each other.

5. The light-inverse type guidelight plate as the claim 1, wherein the reflection face is straightly lined.

6. The light-inverse type guidelight plate as the claim 5, wherein the reflection portion has a pair of the reflection faces connecting to each other and including a predetermined angle sandwiched therebetween.

7. The light-inverse type guidelight plate as the claim 1, wherein the reflecting member further covers the light-guiding portion.

8. The light-inverse type guidelight plate as the claim 1, wherein the light-guiding portion is frame shaped.

9. The light-inverse type guidelight plate as the claim 8, wherein the reflecting member further covers an outside of the light-guiding portion.

10. The light-inverse type guidelight plate as the claim 9, wherein the reflecting member further covers an inside of the light-guiding portion.

11. The light-inverse type guidelight plate as the claim 8, wherein the light-guiding portion includes two reflection slant respectively concaved on two opposing sides of an end opposing to the reflection potion, the reflection slant each is adjusted to get a variable depth to provide a predetermined transmitted flux therein.

12. The light-inverse type guidelight plate as the claim 1, wherein the light-guiding portion is plane shaped.

13. The light-inverse type guidelight plate as the claim 12, wherein the reflection face is shaped like a parabola, the slot where the lighting member disposes locates on a focus of the parabola for the light transferring parallel after reflecting by the reflection face.