Light-emitting diode backlight module of a display

• US 20070211490A1
• Filed: 05/23/2006
• Published: 09/13/2007
• Est. Priority Date: 03/13/2006
• Status: Abandoned Application

• Current Assignee: Hsien-Chung Chou
• Original Assignee: Hsien-Chung Chou
• Inventors: Chou, Hsien-Chung
• Application Number:
  US11/438,427
• Publication Number:
  US 20070211490A1
• Time in Patent Office: Days
• US Class Current: 362/555
• CPC Class Codes: G02F 1/133603 with LEDs

Abstract

A light-emitting diode backlight module of a display, including a mother circuit board, multiple light-emitting diode units arranged on the mother circuit board and a cover board formed with multiple receiving cavities on a first face. The receiving cavities are respectively aligned with the light-emitting diode units arranged on the mother circuit board, whereby the light-emitting diode units are accommodated in the receiving cavities. The first face of the cover board is attached to the mother circuit board to form a plane flat light-emitting diode backlight module. The cover board is a light guide board or a board body made from a heat-radiating material.

Claims

1. A light-emitting diode backlight module of a display, comprising:

(a) a mother circuit board;

(b) multiple light-emitting diode units arranged on the mother circuit board; and

(c) a cover board made from transparent light guide material, the cover board being formed with multiple receiving cavities on a first face, the receiving cavities being respectively aligned with the light-emitting diode units arranged on the mother circuit board, whereby the light-emitting diode units are accommodated in the receiving cavities, the first face of the cover board being attached to the mother circuit board to form a plane flat light-emitting diode backlight module.

2. The light-emitting diode backlight module of the display as claimed in claim 1, wherein the cover board is enclosed in a reflective frame body.

3. The light-emitting diode backlight module of the display as claimed in claim 1, wherein the light-emitting diode units laid on the mother circuit board are arranged into multiple square arrays outwardly diverging from a center of the mother circuit board, the light-emitting diode units being such laid. out that an innermost array is defined as a first array having one single light-emitting diode unit, an array immediately surrounding the first array being defined as a second array, an array immediately surrounding the second array being defined as a third array, an array immediately surrounding the (n−

1) array being defined as an nth array, the arrays being squarely arranged at equal intervals, the numbers of the light-emitting diode units of the respective arrays being 4(n−

1), wherein n represents the number of the array and n is a natural number and n≧

2.

4. The light-emitting diode backlight module of the display as claimed in claim 1, wherein the light-emitting diode units laid on the mother circuit board are positioned at the tips of multiple equal regular triangles, the regular triangles sharing the tips with each other.

5. A light-emitting diode backlight module of a display, comprising:

(a) a mother circuit board;

(b) multiple light-emitting diode units arranged on the mother circuit board; and

(c) a cover board made from transparent light guide material, the cover board being formed with multiple receiving through hole, the light-emitting diode units arranged on the mother circuit board being respectively accommodated in the receiving through holes.

6. The light-emitting diode backlight module of the display as claimed in claim 5, wherein the cover board is attached to one face of a light guide board and the light guide board is enclosed in a reflective frame body.

7. The light-emitting diode backlight module of the display as claimed in claim 5, wherein the cover board has a thickness equal to a height of the light-emitting diode units protruding from the mother circuit board, whereby when the cover board is attached to the mother circuit board, front faces of the light-emitting diode units are flush with a top face of the cover board.

8. The light-emitting diode backlight module of the display as claimed in claim 5, wherein the cover board is made from a heat-radiating material.

9. The light-emitting diode backlight module of the display as claimed in claim 5, wherein the light-emitting diode units laid on the mother circuit board are arranged into multiple square arrays outwardly diverging from a center of the mother circuit board, the light-emitting diode units being such laid out that an innermost array is defined as a first array having one single light-emitting diode unit, an array immediately surrounding the first array being defined as a second array, an array immediately surrounding the second array being defined as a third array, an array immediately surrounding the (n−

1) array being defined as an nth array, the arrays being squarely arranged at equal intervals, the numbers of the light-emitting diode units of the respective arrays being 4(n−

1), wherein n represents the number of the array and n is a natural number and n≧

2.

10. The light-emitting diode backlight module of the display as claimed in claim 5, wherein the light-emitting diode units laid on the mother circuit board are positioned at the tips of multiple equal regular triangles, the regular triangles sharing the tips with each other.