Impulse backlight system and a flat display using the same

• US 20060023470A1
• Filed: 02/07/2005
• Published: 02/02/2006
• Est. Priority Date: 07/30/2004
• Status: Abandoned Application

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chen, Chih-Kuang, Chou, Hui-Kai, Chen, Chun-Yuan, Lin, Yu-Chuan
• Application Number:
  US11/050,749
• Publication Number:
  US 20060023470A1
• Time in Patent Office: Days
• US Class Current: 362/611
• CPC Class Codes: G02F 1/133604 with lamps
• CPC Class Codes: G09G 3/342 using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
• CPC Class Codes: G09G 3/3426 the different display panel areas being distributed in two dimensions, e.g. matrix

Abstract

An impulse backlight system for a flat display is provided. The impulse backlight system includes flat light sources combined as a backlight area of the liquid crystal display to provide the flat display with luminosity, corresponding drivers for driving the flat light sources respectively and one or more inverters for providing the flat light sources with voltage power according to image display of the flat display.

Claims

1. An impulse backlight system for a flat display, comprising:

a flat light source;

a driver for driving said flat light source; and

an inverter for supplying a driving voltage to said flat light source;

wherein a rectangular backlight area is defined by said flat light source, the lengths of said flat light source and said rectangular backlight area along x axis are X_L and X_B respectively, and the lengths of said flat light source and said rectangular backlight area along y axis are Y_L and Y_B respectively, wherein Y_B/Y_L is greater than or equal to 2 and X_B/X_L is greater than or equal to 1.

2. The impulse backlight system according to claim 1, wherein said flat light source comprises a plasma lamp.

3. The impulse backlight system according to claim 1, wherein said flat light source comprises a serpentine cold cathode fluorescent lamp.

4. The impulse backlight system according to claim 1, further comprising an upper transparent substrate and a lower transparent substrate, wherein the flat light source is disposed between the upper transparent substrate and the lower transparent substrate.

5. The impulse backlight system according to claim 1 further comprising:

a light driving device having a controller, wherein the controller is for controlling the inverter; and

an integrated circuit board for controlling the controller.

6. The impulse backlight system according to claim 5, further comprising an information process device, wherein said integrated circuit board is for receiving image signals from the information process device.

7. A flat panel display comprising:

a display panel; and

an impulse backlight system disposed under said display panel, said impulse backlight system comprising;

a flat light source;

a driver for driving said flat light source; and

an inventor for supplying a driving voltage to said flat light source;

wherein a rectangular backlight area is defined by said flat light source, the lengths of said flat light source and said rectangular backlight area along x axis are X_L and X_B respectively, and the lengths of said flat light source and said rectangular backlight area along y axis are Y_L and Y_B respectively, wherein Y_B/Y_L is greater than or equal to 2 and X_B/X_L is greater than or equal to 1.

8. The flat panel display according to claim 7, wherein said flat panel display is a liquid crystal display.

9. The flat panel display according to claim 7, wherein said flat light source comprises a plasma lamp.

10. The flat panel display according to claim 7, wherein said flat light source comprises a serpentine cold cathode fluorescent lamp.

11. The flat panel display according to claim 7, further comprising an upper transparent substrate and a lower transparent substrate, wherein the flat light source is disposed between the upper transparent substrate and the lower transparent substrate.

12. The flat panel display according to claim 7, further comprising:

a light driving device having a controller for controlling the inverter; and

an integrated circuit board for controlling the controller.

13. The flat panel display according to claim 12, further comprising an information process device, wherein said integrated circuit board is for receiving image signals from the information process device.

14. An impulse backlight system for a flat display apparatus, said impulse backlight system comprising:

a plurality of flat light sources;

a plurality of drivers, wherein each of the plurality of drivers is coupled to each of the plurality of flat light sources; and

an inverter coupled to the plurality of drivers, wherein the inverter supplies a driving voltage to the plurality of flat light sources.

15. The impulse backlight system according to claim 14, wherein a rectangular backlight area is defined by said flat light source, wherein the lengths of said flat light source and said rectangular backlight area along x axis are X_L and X_B respectively and the lengths of said flat light source and said rectangular backlight area along y axis are Y_L and Y_B respectively, wherein Y_B/Y_L is greater than or equal to 2 and X_B/X_L is greater than or equal to 1.

16. The impulse backlight system according to claim 14, wherein each of the plurality of flat light sources comprises a plasma lamp.

17. The impulse backlight system according to claim 14, wherein each of the plurality of flat light sources comprises a serpentine cold cathode fluorescent lamp.

18. The impulse backlight system according to claim 14, further comprising:

a light driving device having a controller coupled to said inverter; and

an integrated circuit board coupled to the controller.

19. The impulse backlight system according to claim 18, further comprising an information process device, wherein said integrated circuit board is coupled to the information process device.