Method and device for adjusting driving voltage of microelectromechanical optical device

• US 7,898,721 B2
• Filed: 01/06/2005
• Issued: 03/01/2011
• Est. Priority Date: 09/27/2004
• Status: Active Grant

• Current Assignee: AU Optronics Corporation, Snaptrack Incorporated (Qualcomm, Inc.)
• Original Assignee: AU Optronics Corporation
• Inventors: Wong, Jia-Fam, Gan, Feng-Yuan, Lin, Han-Tu
• Primary Examiner(s): Mack; Ricky L
• Assistant Examiner(s): Thomas; Brandi N
• Application Number:
  US11/030,526
• Publication Number:
  US 20060077513A1
• Time in Patent Office: 2,245 Days
• Field of Search: 359/290, 359/291, 359/292, 359/298, 359/242, 359/237, 359/295, 359/296
• US Class Current: 359/290
• CPC Class Codes: G09G 2310/0275 Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
• CPC Class Codes: G09G 2320/041 Temperature compensation
• CPC Class Codes: G09G 3/3466 based on interferometric effect

Abstract

A driving voltage adjusting device for a microelectromechanical optical (MEMO) device. The adjusting device comprises a parameter generator and a driving device. The driving device outputs an adjusting driving voltage to the MEMO device to a parameter from the parameter generator.

Claims

1. A driving voltage adjusting device for a microelectromechanical optical device employed in a display, comprising:

a parameter generator for providing a parameter; and

a driving device for providing an adjusting driving voltage to the microelectromechanical optical device employed in the display in accordance with the parameter, wherein the microelectromechanical optical device displays an image in accordance with the adjusting driving voltage, wherein the parameter is an ambient temperature of the microelectromechanical optical device.

2. The device as claimed in claim 1, wherein the driving device comprises:

a storage unit for storing a look up table; and

a control unit for controlling the driving voltage in accordance with the parameter and the look up table.

3. The device as claimed in claim 2, wherein the parameter generator comprises a temperature sensor.

4. The device as claimed in claim 3, wherein the look up table comprises different ambient temperature conditions and corresponding driving voltages for the microelectromechanical optical device.

5. A method for adjusting a driving voltage of a microelectromechanical optical device employed in a display, comprising:

generating a parameter; and

adjusting the driving voltage of the microelectromechanical optical device employed in the display in accordance with the parameter, such that the microelectromechanical optical device displays an image in accordance with an adjusting driving voltage, wherein the parameter is an ambient temperature of the microelectromechanical optical device.

6. The method as claimed in claim 5, wherein generating the parameter comprises:

detecting the ambient temperature; and

outputting the parameter in accordance with the ambient temperature.

7. The method as claimed in claim 5, wherein adjusting the driving voltage comprises:

acquiring the parameter and a look up table; and

outputting the adjusting driving voltage to the microelectromechanical optical device in accordance with the parameter and the look up table.

8. A display, comprising:

a microelectromechanical optical device serving as a display device; and

a driving voltage adjusting device electrically coupled to the microelectromechanical optical device, comprising;

a parameter generator for providing a parameter; and

a driving device for providing an adjusting driving voltage to the microelectromechanical optical device in accordance with the parameter, wherein the microelectromechanical optical device displays an image in accordance with the adjusting driving voltage, wherein the parameter is an ambient temperature of the microelectromechanical optical device.

9. A driving voltage adjusting device for a microelectromechanical optical device employed in a display, comprising:

a parameter generator for providing a parameter; and

a driving device for providing an adjusting driving voltage to the microelectromechanical optical device employed in the display in accordance with the parameter, wherein the microelectromechanical optical device displays an image in accordance with the adjusting driving voltage, wherein the parameter is an operating time of the microelectromechanical optical device.

10. The device as claimed in claim 9, wherein the driving device comprises:

a storage unit for storing a look up table; and

a control unit for controlling the driving voltage in accordance with the parameter and the look up table.

11. The device as claimed in claim 10, wherein the parameter generator comprises a timer.

12. The device as claimed in claim 11, wherein the look up table comprises operating time conditions and corresponding driving voltages for the microelectromechanical optical device.

13. A method for adjusting a driving voltage of a microelectromechanical optical device employed in a display, comprising:

generating a parameter; and

adjusting the driving voltage of the microelectromechanical optical device employed in the display in accordance with the parameter, such that the microelectromechanical optical device displays an image in accordance with an adjusting driving voltage, wherein the parameter is an operating time of the microelectromechanical optical device.

14. The method as claimed in claim 13, wherein generating the parameter comprises:

detecting the operating time of the microelectromechanical optical device; and

outputting the parameter in accordance with the operating time.

15. The method as claimed in claim 13, wherein adjusting the driving voltage comprises:

acquiring the parameter and a look up table; and

outputting the adjusting driving voltage to the microelectromechanical optical device in accordance with the parameter and the look up table.

16. A display, comprising:

a microelectromechanical optical device serving as a display device; and

a driving voltage adjusting device electrically coupled to the microelectromechanical optical device, comprising;

a parameter generator for providing a parameter; and

a driving device for providing an adjusting driving voltage to the microelectromechanical optical device in accordance with the parameter, wherein the parameter is an operating time of the microelectromechanical optical device.