Pixel circuit display driver
A display includes a plurality of pixels and operates in a selected load period, a separate deselected load period, and a separate illumination period. Light may be generated by the plurality of pixels during the illumination period based on voltages stored in the plurality of pixels during the selected and deselected load periods. Methods of operating a display are also disclosed.
1. A display, comprising:
a plurality of pixels, wherein the display is configured to operate in a selected load period, a separate deselected load period, and a separate illumination period, wherein light generated by the plurality of pixels during the separate illumination period is a function of voltages stored in the plurality of pixels during the selected and separate deselected load periods, wherein the display is further configured such that during the selected and separate deselected load periods, each pixel of the plurality of pixels is driven to a voltage level that is slightly below a dark side of a predicted settling voltage of the plurality of pixels.
2. The display of claim 1 , wherein light is generated in at least some pixels of the plurality of pixels during the selected and separate deselected load periods and the separate illumination period during a cycle of maximum illumination.
3. The display of claim 1 , wherein data is not received by the plurality of pixels during the separate illumination period.
4. The display of claim 1 , wherein the plurality of pixels is organized into rows of pixels, and only one row of pixels at a time produces light during the selected and separate deselected load periods.
5. The display of claim 1 , wherein the plurality of pixels Is organized into rows of pixels, and multiple rows of pixels produce light during the separate illumination period.
6. The display of claim 1 , wherein display information is transferred to the plurality of pixels during the selected load period.
7. The display of claim 1 , wherein display information is not transferred to the plurality of pixels during the separate illumination period.
8. The display of claim 1 , wherein the display is further configured such that between separate illumination periods, each pixel of the plurality of pixels is driven to a voltage level slightly below a black-level voltage of the plurality of pixels.
9. The display of claim 1 , wherein the display is further configured such that during the selected and separate deselected load periods, each pixel of the plurality of pixels is driven to a voltage level that is slightly below a black-level voltage associated with pixels of the display.
10. The display of claim 1 , wherein the display is further configured such that during the selected and separate deselected load periods, each pixel of the plurality of pixels is driven to a voltage level that is slightly below a predicted settling voltage of the plurality of pixels.
11. The display of claim 1 , wherein voltages stored in the plurality of pixels during the selected load and separate deselected load periods are derived by currents that are applied to the plurality of pixels during the selected load period.
12. The display of claim 1 , wherein during the separate illumination period, voltages stored in each pixel of the plurality of pixels are returned to about a same level as the voltages stored in each pixel of the plurality of pixels during the selected and separate deselected load periods.
13. The display of claim 1 , wherein during the separate illumination period, voltages stored in each pixel of the plurality of pixels are returned to a lower level than the voltages that were stored in each pixel of the plurality of pixels during the selected and separate deselected load periods.
14. A method for operating a display, comprising:
storing a voltage that is slightly below a dark side of a predicted settling voltage of a plurality of pixels in each pixel of the plurality of pixels during a selected load period and a deselected load period; and
generating light with the plurality of pixels during an illumination period based on the voltage stored in each pixel of the plurality of pixels during the selected and deselected load periods, wherein the illumination period, the selected load period, and the deselected load period are separate periods.
15. The method of claim 14 , further comprising, during a period of maximum illumination, generating light with at least some of the plurality of pixels during the selected and deselected load periods.
16. The method of claim 14 , further comprising receiving display information at the plurality of pixels during the selected load period.
17. The method of claim 14 , wherein the voltages stored in the plurality of pixels during the selected and deselected load periods are derived by currents applied to the plurality of pixels during the selected load period.
18. The method of claim 14 , further comprising, during the separate illumination period, returning the voltage stored in each pixel of the plurality of pixels to about the same voltage that was stored in each pixel of the plurality of pixels at the end of the selected load period.
19. A display, comprising:
means for storing voltages in a plurality of pixels during a selected and deselected load period, wherein the voltages stored in the plurality of pixels are at levels slightly below a dark side of a predicted settling voltage of the plurality of pixels;
means for generating light with the plurality of pixels during an illumination period based on the voltages stored in the plurality of pixels during the selected and deselected load periods, wherein the illumination period, the selected load period, and the deselected load period are separate periods; and
means for, during the separate illumination period, returning the voltage stored in each pixel in the plurality of pixels to about a same voltage level as the voltage stored in each pixel in the plurality of pixels at the end of the selected load period.