Light-inverse type guidelight plate

• US 7,114,839 B2
• Filed: 10/06/2003
• Issued: 10/03/2006
• Est. Priority Date: 10/06/2003
• Status: Active Grant

• Current Assignee: Chia Shin Kuo
• Original Assignee: Chia Shin Kuo
• Inventors: Kuo, Chia Shin
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): Lee, Guiyoung
• Application Number:
  US10/681,809
• Publication Number:
  US 20050073825A1
• Time in Patent Office: 1,093 Days
• Field of Search: 362/31, 362/29, 362/30, 362/555, 362/560, 362/561, 362/341, 362/347, 362/244, 362/623, 362/610, 362/609, 362/621, 362/608, 362/612, 362/615
• US Class Current: 362/608
• 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 for a backlight module having at least one lighting member, comprising:

at least one reflection portion having at least a first and a second arc-shaped reflection faces, each of said at least first and second arc-shaped reflection faces having a first end and a second end, said first arc-shaped reflection face being connected at said second end thereof to said first end of said second arc-shaped reflection face,

a transmitting face connected to said first arc-shaped reflection face at said first end thereof and to said second arc-shaped reflection face at said second end thereof, said transmitting face including a single concave slot formed thereat, a lighting member being received in said single concave slot, wherein said at least first and second arc-shaped reflection faces of said at least one reflection portion are arranged with a single lighting member received in said single concave slot, said single lighting member emitting light to said at least first and second arc-shaped reflection faces to be reflected therefrom;

a reflecting member covering the reflection portion; and

a predetermined-shaped light-guiding portion connected to the transmitting face for providing a displaying region thereon, the light guiding portion having a thickness of less than 2 mm;

wherein the light-guiding portion locates behind the lighting member'"'"'s back, and wherein a light emitting portion of the lighting member faces the reflecting member.

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

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

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

5. The light-inverse type guidelight plate as the claim 4, wherein the reflecting member further covers an outside of the light-guiding portion.

6. The light-inverse type guidelight plate as the claim 5, wherein the reflecting member further covers an inside of the light-guiding portion.

7. The light-inverse type guidelight plate as the claim 4, 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.

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

9. A guidelight plate for a backlighting module comprising:

at least one reflecting portion having at least a pair of reflection faces and a transmitting face, each of the at least a pair of reflection, faces in opposing spatial relationship with the transmitting face, the transmitting face having formed thereon a slot for receiving a corresponding lighting member;

a lighting member disposed in said slot, wherein light emitted by the lighting member faces said at least a pair of reflection faces and is transversely confined within a predetermined transmission angle, the lighting member being disposed in the slot so that the confined light is directed towards said at least a pair of reflection faces and is reflected thereat towards the transmitting face;

a reflecting member disposed on the at least one reflecting portion; and

a light-guiding portion coupled to the transmitting face of the reflecting portion in coplanar spatial relationship with the at least one reflecting portion, the lighting member being captured between the light-guiding portion and the reflecting portion by the slot formed therein, the light-guiding portion defining a display region thereon.

10. The guidelight plate for a backlighting module as recited in claim 9, wherein the predetermined transmission angle is not greater than 120 degrees.

11. The guidelight plate for a backlighting module as recited in claim 9, wherein the at least one reflecting portion includes a pair of reflection faces.

12. The guidelight plate for a backlighting module as recited in claim 11, wherein each of the pair of reflection faces includes a pair of planar reflecting surfaces.

13. The guidelight plate for a backlighting module as recited in claim 12, wherein the pair of reflection faces are adjacently joined each to the other, one planar reflecting surface from each adjacent reflecting face defining a predetermined angle therebetween.

14. The guidelight plate for a backlighting module as recited in claim 11, wherein each of the pair of reflecting faces is actuate.

15. The guidelight plate for a backlighting module as recited in claim 9, wherein the reflecting member is further disposed in the display region.

16. The guidelight plate for a backlighting module as recited in claim 15, wherein the light-guiding portion includes an outer periphery and an inner periphery, the inner periphery enclosing a region of the display region on which the reflecting member is disposed.

17. The guidelight plate for a backlighting module as recited in claim 16, wherein the reflecting member is further disposed on the outer periphery of the light-guiding portion.

18. The guidelight plate for a backlighting module as recited in claim 17, wherein the reflecting member is further disposed on the inner periphery of the light-guiding portion.

19. The guidelight plate for a backlighting module as recited in claim 16, wherein the light-guiding portion includes a reflection slant on the outer periphery at each of two opposing sides thereof on an end thereof opposite the transmitting face, each reflection slant forming a predetermined angle with respect to a longitudinal edge of the light-guiding portion so as to provide a predetermined transmitted flux therein.

20. The guidelight plate for a backlighting module as recited in claim 9, wherein the reflection face defines a parabola, the slot in the transmitting face being located at a focus of the parabola.

21. A guidelight plate for a backlighting module comprising:

at least one reflecting portion having at least one reflection face and a transmitting face, each of the at least one reflection face in opposing spatial relationship with the transmitting face, the transmitting face having formed thereon at least one slot for receiving a corresponding lighting member;

a lighting member disposed in each of the at least one slot, where light emitted by the lighting member is transversely confined to a predetermined transmission angle, the lighting member being disposed in the slot so that the confined light is directed towards the at least one reflection face and is reflected thereat towards the transmitting face;

a reflecting member disposed on the at least one reflecting portion; and

a light-guiding portion coupled to the transmitting face of the reflecting portion in coplanar spatial relationship with the at least one reflecting portion, the lighting member being captured between the light-guiding portion and the reflecting portion by the slot formed therein, the light-guiding portion defining a display region thereon,

wherein the reflecting member is further disposed in the display region, and

wherein the light guiding portion includes an outer periphery and an inner periphery, the inner periphery enclosing a region of the display region on which the reflecting member is disposed.

22. The guidelight plate for a backlighting module as recited in claim 21, wherein the reflecting member is further disposed on the outer periphery of the light-guiding portion.

23. The guidelight plate for a backlighting module as recited in claim 22, wherein the reflecting member is further disposed on the inner periphery of the light-guiding portion.

24. The guidelight plate for a backlighting module as recited in claim 21, wherein the light-guiding portion includes a reflection slant on the outer periphery at each of two opposing sides thereof on an end thereof opposite the transmitting face, each reflection slant forming a predetermined angle with respect to a longitudinal edge of the light-guiding portion so as to provide a predetermined transmitted flux therein.

25. The guidelight plate for a backlighting module as recited in claim 21, wherein the reflection face defines a parabola, the slot in the transmitting face being located at a focus of the parabola.