Reflective circuit board, and light module and flat panel display including the reflective circuit board

• US 20040228113A1
• Filed: 05/12/2004
• Published: 11/18/2004
• Est. Priority Date: 05/15/2003
• Status: Abandoned Application

• Current Assignee: InnoLux Corporation
• Original Assignee: Toppoly Optoelectronics Corporation (InnoLux Corporation)
• Inventors: Wang, Chien-Chang
• Application Number:
  US10/844,294
• Publication Number:
  US 20040228113A1
• Time in Patent Office: Days
• US Class Current: 362/31
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: H05K 1/0274 Optical details, e.g. printed circuits comprising integral optical means H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42
• CPC Class Codes: H05K 2201/2054 Light-reflecting surface, e.g. conductors, substrates, coatings, dielectrics

Abstract

A reflective circuit board, a light module including the circuit board, and a flat panel display including the circuit board. The reflective circuit board of the present invention includes: a circuit board body having a first surface and a second surface; a reflective layer attached to the first surface of the circuit board body; and an electric component disposed on the second surface of the circuit board body.

Claims

1. A reflective circuit board, comprising:

a circuit board body having a first surface and a second surface;

wherein the first surface is reflective over a substantial area of the circuit board body; and

an electric component supported on the circuit board body.

2. The reflective circuit board as claimed in claim 1, wherein the circuit board body is a rigid circuit board or a flexible circuit board.

3. The reflective circuit board as claimed in claim 1, wherein the reflective surface comprises an inorganic material.

4. The reflective circuit board as claimed in claim 3, wherein the inorganic material in the reflective surface is selected from the group of titanium dioxide, aluminum oxide, zinc oxide, zinc sulfide, barium sulfate, antimony oxide, magnesium oxide, magnesium fluoride, calcium carbonate, and combination thereof.

5. The reflective circuit board as claimed in claim 1, wherein the reflective surface comprises a metal or a metal alloy.

6. The reflective circuit board as claimed in claim 5, wherein the reflective surface comprises metal or metal alloy selected from the group of silver, silver alloy, aluminum, aluminum alloy, and combination thereof.

7. The reflective circuit board as claimed in claim 1, wherein the reflective surface comprises a layer formed by coating, deposition, or electroplating to be attached to the first surface of the circuit board body.

8. The reflective circuit board as claimed in claim 1, wherein the reflective surface comprises a reflective layer attached to the first surface of the circuit board body by adhesion.

9. The reflective circuit board as claimed in claim 8, wherein the reflective layer has a thickness of 1 to 10 μ

m.

10. The reflective circuit board as claimed in claim 8, further comprising a protective layer attached to the reflective layer.

11. A light module comprising:

the reflective circuit board as claimed in claim 1;

a light source; and

a light guiding plate disposed in operative relationship to the reflective circuit board, such that light emitted from the light source passes the light guiding plate, is reflected by the reflective surface of the reflective circuit board, and then reaches a first surface of the light guiding plate.

12. A flat panel display comprising:

the light module as claimed in claim 11;

and

a display panel disposed in operative relationship with the light module.

13. An electronic device, comprising:

the flat panel display as claimed in claim 12;

a controller operatively coupled to the flat panel display, controlling the operation of the flat panel display; and

a source of image data providing image data to the controller to render an image on the flat panel display.