Circuits for controlling display apparatus

Patent metadata

Field	Value
Publication number	US-9087486-B2
Application number	US-201113019215-A
Country	US
Kind code	B2
Filing date	Feb 1, 2011
Priority date	Feb 23, 2005
Publication date	Jul 21, 2015
Grant date	Jul 21, 2015

Abstract

A method of operating a display including loading image data to pixels in multiple rows of pixels in an array of pixels during a data loading phase, actuating the pixels in the multiple rows during an update phase, and illuminating at least one lamp during an lamp illumination phase to illuminate the actuated pixels to form an image on the display, in which each of the loading, actuating and illuminating phases partially overlap in time.

First claim

What is claimed is:

1. A method of operating a display comprising:
loading image data to an array of pixels during a data loading phase;
actuating a light blocking element in pixels of at least two rows and at least two columns during an update phase; and
illuminating at least one lamp during a lamp illumination phase to direct light toward the pixels to form an image on the display, wherein the update phase partially overlaps with the data loading phase to increase a lamp duty cycle, and wherein the update phase comprises a first sub-phase corresponding to a first transition of a light blocking element, and a second sub-phase corresponding to a second transition of the light blocking element, and wherein image data is loaded during at least a portion of the first sub-phase.

2. The method of claim 1 , wherein the lamp illumination phase overlaps with the data loading phase for a duration of the data loading phase.

3. The method of claim 1 , wherein the update phase comprises transmitting a plurality of update signals.

4. The method of claim 3 , wherein a first update signal of the plurality of update signals further comprises a first signal phase and a second signal phase corresponding to the first and second sub-phases, and wherein the data loading phase overlaps with the transmission of the first signal phase of the first update signal.

5. The method of claim 4 , further comprising a second update signal of the plurality of update signals having a first signal phase and a second signal phase corresponding to the first and second sub-phases, wherein the lamp illumination phase overlaps the transmission of both the second signal phase of the first update signal and the first signal phase of the second update signal.

6. The method of claim 3 , wherein the data loading phase partially overlaps with the first sub-phase.

7. The method of claim 3 , wherein the first sub-phase corresponds to an electrical setting sub-phase for setting an electrical state of at least one latch circuit, and the second sub-phase corresponds to a mechanical reaction sub-phase for moving at least one light blocking element.

8. The method of claim 7 , wherein the data loading phase overlaps with the mechanical reaction sub-phase.

9. The method of claim 7 , wherein the lamp illumination phase partially overlaps with the electrical setting sub-phase.

10. The method of claim 3 , wherein the first sub-phase corresponds to a time period for actuating the respective light blocking elements in a plurality of pixels to move into a position to block light; and the second sub-phase corresponds to a time period for actuating the respective light blocking elements in a plurality of pixels to move into a position indicated by the image data.

11. The method of claim 3 , wherein the lamp illumination phase partially overlaps with at least one of the first sub-phase and the second sub-phase.

12. The method of claim 1 , further comprising moving a light blocking element during a transition phase, wherein the lamp illumination phase partially overlaps the transition phase.

13. The method of claim 12 , wherein the lamp illumination phase overlaps the transition during a reset phase.

14. The method of claim 1 , wherein the data loading phase overlaps the end of the update phase and the beginning of the lamp illumination phase.

15. The method of claim 1 , wherein each of the loading, update and illumination phases all at least partially overlap each other.

16. The method of claim 1 , wherein the display is built upon a transparent substrate.

17. The method of claim 1 , wherein the display comprises an array of MEMS light modulators.

18. The method of claim 1 , wherein the display comprises an array of shutter-based light modulators.

19. The method of claim 1 , wherein the update phase partially overlaps with the lamp illumination phase.

Assignees

• Gandhi Jignesh
• Steyn Jasper Lodewyk
• Fijol John J
• Barton Roger W
• Lewis Stephen R
• Mcallister Abraham
• Hagood Nesbitt W
• Pixtronix Inc

Inventors

• Gandhi Jignesh
• Steyn Jasper Lodewyk
• Fijol John J
• Barton Roger W
• Lewis Stephen R
• Mcallister Abraham
• Hagood Nesbitt W

Classifications

• G09G3/2014

  by modulation of the duration of a single pulse during which the logic level remains constant · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G3/3413

  Details of control of colour illumination sources · CPC title

• G09G2360/144

  the light being ambient light · CPC title

• G09G2300/0814

  used for selection purposes, e.g. logical AND for partial update · CPC title