FLAT DISPLAY DEVICE BLACKLIGHT MODULE THEREOF FOR NIGHT VISION IMAGING SYSTEM

• US 20100301758A1
• Filed: 06/02/2009
• Published: 12/02/2010
• Est. Priority Date: 06/02/2009
• Status: Abandoned Application

• Current Assignee: Mitac Technology Corporation (MiTAC Holdings Corp.)
• Original Assignee: Mitac Technology Corporation (MiTAC Holdings Corp.)
• Inventors: Chen, Chun-Hung
• Application Number:
  US12/477,036
• Publication Number:
  US 20100301758A1
• Time in Patent Office: Days
• US Class Current: 315/154
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336

Abstract

A flat display device is adapted for human eye observation with or without applying a NVIS (Night Vision Imaging System). The flat display device includes a display panel, a backlight module and a backlight driving unit. The backlight module includes multiple red light LEDs (Light Emitting Diodes), green light LEDs and blue light LEDs that form together a light source array, so as to generate a backlight by mixing and projecting the red light, green light and blue light to the display panel. The backlight driving unit is electrically connected with the light source array and used to drive and control the red light LEDs, green light LEDs and blue light LEDs. At a night-vision mode, the backlight driving unit may, upon actuation of a actuating signal, adjust or disable the red light LED by for example decreasing or turning off the driving electricity sent to the red light LED, thereby achieving the requirements for nigh vision purposes.

Claims

1. A flat display device adapted for human eye observation with or without a night vision imaging system (NVIS), comprising:

a display panel, comprising a plurality of liquid crystal pixel arrays that is controlled by a liquid crystal control signal generated by an image processing device;

a backlight module, comprising a light source array with a plurality of red light LEDs (Light Emitting Diodes), green light LEDs and blue light LEDs, the light source array generating a red light, a green light and a blue light and projecting to the display panel; and

a backlight driving unit electrically connected with the light source array, driving and controlling the red light LEDs, green light LEDs and blue light LEDs of the backlight module, wherein at a night-vision mode the backlight driving unit, upon actuation of a actuating signal, adjusts or turns off a driving electricity sent to the red light LED, thereby adjusting or turning off the generated red light for human eye observation with the NVIS.

2. The flat display device as claimed in claim 1, wherein the red light LED, green light LED and blue light LED of the backlight module are packed into a incorporated package as a RGB (Red Green Blue) LED.

3. The flat display device as claimed in claim 1, wherein the backlight driving unit is further electrically connected with a night-vision actuating unit, the night-vision actuating unit generating the actuating signal to control the backlight driving unit to adjust of turn off the driving electricity sent to the red light LED.

4. The flat display device as claimed in claim 3, wherein the night-vision actuating unit comprises an electrical switch element.

5. The flat display device as claimed in claim 1, wherein the backlight driving unit is further connected with a sensing unit, the sensing unit generating the actuating signal to control the backlight driving unit to adjust or turn off the driving electricity sent to the red light LED.

6. The flat display device as claimed in claim 5, wherein the sensing unit comprises a light sensor.

7. The flat display device as claimed in claim 1, wherein the backlight driving unit adjusts the driving electricity sent to the red light LED through a preset ratio.

8. A backlight module adapted for human eye observation with or without a night vision imaging system (NVIS), providing a red light, a green light and a blue light and projecting to a display panel, the backlight module comprising:

a plurality of red light LEDs (Light Emitting Diodes), green light LEDs and blue light LEDs that form together as a light source array, the light source array generating the red light, green light and blue light and projecting to the display panel; and

a backlight driving unit electrically connected with the light source array, driving and controlling the red light LEDs, green light LEDs and blue light LEDs, wherein at a night-vision mode the backlight driving unit, upon actuation of a actuating signal, adjusts or turns off a driving electricity sent to the red light LED, thereby adjusting or turning off the generated red light for human eye observation with the NVIS.

9. The backlight module as claimed in claim 8, wherein the red light LED, green light LED and blue light LED of the backlight module are packed into a incorporated package as a RGB (Red Green Blue) LED.

10. The backlight module as claimed in claim 8, wherein the backlight driving unit is further electrically connected with a night-vision actuating unit, the night-vision actuating unit generating the actuating signal to control the backlight driving unit to adjust of turn off the driving electricity sent to the red light LED.

11. The backlight module as claimed in claim 10, wherein the night-vision actuating unit comprises an electrical switch element.

12. The backlight module as claimed in claim 8, wherein the backlight driving unit is further connected with a sensing unit, the sensing unit generating the actuating signal to control the backlight driving unit to adjust or turn off the driving electricity sent to the red light LED.

13. The backlight module as claimed in claim 12, wherein the sensing unit comprises a light sensor.

14. The backlight module as claimed in claim 8, wherein the backlight driving unit adjusts the driving electricity sent to the red light LED through a preset ratio.

15. A flat display device adapted for human eye observation with or without a night vision imaging system (NVIS), comprising:

a display panel, comprising a plurality of liquid crystal pixel arrays that is controlled by a liquid crystal control signal generated by an image processing device;

a backlight module, comprising a light source array with a plurality of red light LEDs (Light Emitting Diodes), green light LEDs and blue light LEDs, the light source array generating a red light, a green light and a blue light and projecting to the display panel; and

a backlight driving unit electrically connected with the light source array, driving and controlling the red light LEDs, green light LEDs and blue light LEDs of the backlight module, wherein at a night-vision mode the backlight driving unit adjusts or turns off a driving electricity sent to the red light LED, thereby adjusting or turning off the generated red light for human eye observation with the NVIS.

16. The flat display device as claimed in claim 15, wherein the red light LED, green light LED and blue light LED of the backlight module are packed into a incorporated package as a RGB (Red Green Blue) LED.

17. The flat display device as claimed in claim 15, wherein the backlight driving unit is further electrically connected with a night-vision actuating unit, the night-vision actuating unit generating a actuating signal to actuate and control the backlight driving unit to adjust of turn off the driving electricity sent to the red light LED.

18. The flat display device as claimed in claim 17, wherein the night-vision actuating unit comprises an electrical switch element.

19. The flat display device as claimed in claim 15, wherein the backlight driving unit is further connected with a sensing unit, the sensing unit generating the actuating signal to control the backlight driving unit to adjust or turn off the driving electricity sent to the red light LED.

20. The flat display device as claimed in claim 19, wherein the sensing unit comprises a light sensor.