SYSTEMS, DEVICES, AND METHODS FOR DRIVING A DISPLAY

• US 20130127926A1
• Filed: 11/08/2012
• Published: 05/23/2013
• Est. Priority Date: 11/11/2011
• Status: Abandoned Application

• Current Assignee: Snaptrack Incorporated (Qualcomm, Inc.)
• Original Assignee: Qualcomm MEMS Technologies Incorporated (Qualcomm, Inc.)
• Inventors: Lewis, Alan, Todorovich, Mark, Ganti, SuryaPrakash, Aflatooni, Koorosh, Van Lier, Wilhelmus Johannes Robertus, Djordjev, Kostadin, Parmar, Manu, Lee, Jeho
• Application Number:
  US13/672,518
• Publication Number:
  US 20130127926A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G06T 1/00 General purpose image data processing
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/06 Passive matrix structure, i.e. with direct application of both column and row voltages to the light emitting or modulating elements, other than LCD or OLED
• CPC Class Codes: G09G 2310/0205 Simultaneous scanning of several lines in flat panels
• CPC Class Codes: G09G 2310/0218 with collection of electrodes in groups for n-dimensional addressing
• CPC Class Codes: G09G 2310/0221 with use of split matrices G09G3/3644 and G09G3/3666 take precedence
• CPC Class Codes: G09G 3/207 by domain size control G09G3/3637 takes precedence
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/3466 based on interferometric effect
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

This disclosure provides systems, methods and apparatus for writing data to a display. The frame rate is improved by simultaneously and independently writing data to multiple common lines of the display. In some implementations, lines of common color are written simultaneously. In some implementations, more common lines of lower visual importance are written simultaneously than common lines of higher visual importance. In these implementations, colors of higher visual importance can be displayed at a higher resolution to maintain good image quality while still improving frame rate. Display element electrodes may be coupled along common lines in various ways to implement simultaneous writing to multiple common lines.

Claims

1. A method of writing data to a display, comprising:

passively addressing display elements in the display, the display including M columns of the display elements and N rows of the display elements at the intersection of a plurality of common lines and a plurality of segment lines, wherein each row is configured with only display elements of one color in a set of colors, there being a greater number of segment lines than columns of display elements;

independently addressing multiple rows of the same color display elements substantially concurrently; and

writing data to the multiple rows of the same color substantially concurrently.

2. The method of claim 1, wherein independently addressing multiple rows of the same color display elements substantially concurrently includes applying a first set of data signals to a first row of the multiple rows and substantially concurrently applying a second set of data signals to a second row of the multiple rows, wherein the first set of data signals is different than the second set of data signals.

3. The method of claim 2 comprising, applying a third set of data signals to a third row of the multiple rows, wherein the third set of data signals is different than the first and second set of data signals.

4. The method of claim 1, wherein writing data to the multiple rows of only the same color substantially concurrently includes applying a write pulse simultaneously to each of the multiple rows of the same color connected to a single output of a common dirver circuit.

5. A display apparatus comprising:

M columns of display elements;

N rows of display elements, wherein each row is configured with only display elements of one color in a set of colors; and

a common driver and a segment driver configured to passively address display elements in the M columns and N rows,

wherein the segment driver has a plurality of output lines, there being a greater number of output lines than columns of display elements, and wherein the segment driver is configured to independently address more than one row of the same color display elements substantially concurrently, and wherein multiple rows of the same color are configured to be driven substantially concurrently by an output of the common driver.

6. The display apparatus of claim 5, wherein the N rows include a first row having only red display elements, a second row adjacent to the first row having only green display elements, and a third row adjacent to the second row having only blue display elements, the second row being disposed between the first row and the third row.

7. The display apparatus of claim 6, wherein the N rows include a fourth row adjacent to the third row having only green display elements.

8. The display apparatus of claim 5, wherein the segment driver includes twice as many output lines than columns of display elements.

9. The display apparatus of claim 5, wherein the common driver includes less than N outputs for driving the N rows of display elements.

10. The display apparatus of claim 9, wherein one of the common driver outputs is bifurcated so as to supply signals to more than one row of the same color display elements substantially simultaneously.

11. The display apparatus of claim 5, wherein a pixel is formed by a group of four display elements.

12. The display apparatus of claim 11, wherein the group forming the pixel includes one red display element, two green display elements, and one blue display element.

13. The display apparatus of claim 12, wherein the one red display element is in the first row, the two green display elements are in the second row, and the one blue display element is in the third row.

14. The display apparatus of claim 5, further comprising:

a display;

a processor that is configured to communicate with the display, the processor being configured to process image data; and

a memory device that is configured to communicate with the processor.

15. The display apparatus of claim 14, further comprising:

a driver circuit configured to send at least one signal to the display.

16. The display apparatus of claim 15, further comprising:

a controller configured to send at least a portion of the image data to the driver circuit.

17. The display apparatus of claim 14, further comprising:

an image source module configured to send the image data to the processor.

18. The display apparatus of claim 17, wherein the image source module includes at least one of a receiver, transceiver, and transmitter.

19. The display apparatus of claim 14, further comprising:

an input device configured to receive input data and to communicate the input data to the processor.

20. An apparatus for writing data to a display by passively addressing display elements in the display, the display including M columns of display elements and N rows of display elements, wherein each row is configured with only display elements of one color in a set of colors, there being a greater number of segment lines than columns of display elements, the apparatus comprising;

means for independently addressing multiple rows of only the same color display elements substantially concurrently; and

means for writing data to the multiple rows of only the same color substantially concurrently.

21. The apparatus of claim 20, wherein the means for independently addressing multiple rows of only the same color display elements substantially concurrently includes a segment driver connected to a plurality of segment lines, and wherein the means for writing data to the multiple rows of only the same color substantially concurrently includes a common driver connected to a plurality of common lines.

22. The apparatus of claim 20, wherein the means for independently addressing multiple rows of the same color display elements substantially concurrently includes means for applying a first set of data signals to a first row of the multiple rows and means for substantially concurrently applying a second set of data signals to a second row of the multiple rows, wherein the first set of data signals is different than the second set of data signals.

23. The apparatus of claim 22, further comprising means for applying a third set of data signals to a third row of the multiple rows, wherein the third set of data signals is different than the first and second set of data signals.

24. The apparatus of claim 20, wherein the means for writing data to the multiple rows of only the same color substantially concurrently includes means for applying a write pulse simultaneously to each of the multiple rows of the same color.