Display device and method for starting up at a low temperature

• US 20070140316A1
• Filed: 05/04/2006
• Published: 06/21/2007
• Est. Priority Date: 12/16/2005
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: Chiang, Fu-Jen, Fan, Chang-Hsien, Chen, Fang-Tien
• Granted Patent: US 7,641,386 B2
• Time in Patent Office: Days
• US Class Current: 374/170
• CPC Class Codes: G09G 2320/041 Temperature compensation
• CPC Class Codes: G09G 2330/026 Arrangements or methods related to booting a display
• CPC Class Codes: G09G 3/002 to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT

Abstract

A display device and a method for starting up at a low temperature utilizing a heating unit of the display device or an external heating unit to increase the environmental temperature of the display device are disclosed. After the environmental temperature inside the display device reaches a starting-up temperature, the display device can be started up in the low-temperature environment.

Claims

1. A display device for starting up at a low temperature, comprising:

a heating unit for rising an environmental temperature in the display device;

a temperature detecting unit for detecting the environmental temperature in the display device and generating a temperature signal; and

a control unit for starting up the heating unit and receiving the temperature signal, the control unit starting up the display device when the temperature signal reaches a starting-up temperature.

2. The display device as claimed in claim 1, further comprising a memory unit for storing a control program to drive the control unit.

3. The display device as claimed in claim 1, wherein the heating unit comprises at least a lamp.

4. The display device as claimed in claim 1, wherein the temperature detecting unit comprises at least a temperature sensor.

5. The display device as claimed in claim 1, wherein the starting-up temperature is a lowest working temperature of the display device.

6. The display device as claimed in claim 1, further comprising at least a fan for homogenizing the environmental temperature in the display device.

7. The display device as claimed in claim 1, wherein the display device is a projection device.

8. The display device as claimed in claim 7, wherein the heating unit is a projecting light source in the projection device.

9. A projection device for starting up at a low temperature, comprising:

at least a lamp for rising an environmental temperature in the projection device and also acting as a projecting light source of the projection device;

a temperature detecting unit for detecting the environmental temperature in the projection device and generating a temperature signal; and

a control unit for starting up the lamp and receiving the temperature signal, the control unit starting up the projection device when the temperature signal reaches a starting-up temperature of the projection device.

10. The projection device as claimed in claim 9, further comprising a memory unit for storing a control program to drive the control unit.

11. The projection device as claimed in claim 9, wherein the temperature detecting unit comprises at least a temperature sensor.

12. The projection device as claimed in claim 9, wherein the starting-up temperature is a lowest working temperature of the projection device.

13. The projection device as claimed in claim 9, further comprising at least a fan for homogenizing the environmental temperature in the projection device.

14. A method for starting up a display device at a low temperature, comprising the steps of:

starting up a power supply of the display device;

starting up at least a heat generator of the display device for rising an environmental temperature in the display device;

starting up a temperature detecting unit of the display device;

using the temperature detecting unit to detect the environmental temperature; and

starting up the display device when the environmental temperature is higher than a starting-up temperature of the display device.

15. The method as claimed in claim 14, wherein the display device further comprises a control unit for starting up the heat generator, the temperature detecting unit and the display device.

16. The method as claimed in claim 14, wherein the display device further comprises a memory unit for storing a control program to drive the control unit.

17. The method as claimed in claim 14, wherein the heat generator comprises at least a lamp acting as a projecting light source in the display device.

18. The method as claimed in claim 14, wherein the temperature detecting unit comprises at least a temperature sensor.

19. The method as claimed in claim 14, wherein the starting-up temperature is a lowest working temperature of the display device.

20. The method as claimed in claim 14, further comprising at least a fan for homogenizing the environmental temperature in the display device.

21. The method as claimed in claim 14, wherein the display device is a projection device.