Method, device and system of response time compensation

• US 8,188,958 B2
• Filed: 10/16/2005
• Issued: 05/29/2012
• Est. Priority Date: 10/12/2004
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Weiss, Alex, Ben-David, Ilan
• Primary Examiner(s): Lao, Lun-Yi
• Assistant Examiner(s): Lee, Gene W
• Application Number:
  US11/663,349
• Publication Number:
  US 20080143657A1
• Time in Patent Office: 2,417 Days
• Field of Search: 345 87-111, 345204-215, 345690-699
• US Class Current: 345/89
• CPC Class Codes: G09G 2310/027 Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
• CPC Class Codes: G09G 2320/0252 Improving the response speed
• CPC Class Codes: G09G 2320/0295 by monitoring each display pixel
• CPC Class Codes: G09G 2340/16 Determination of a pixel data signal depending on the signal applied in the previous frame
• CPC Class Codes: G09G 2360/18 Use of a frame buffer in a display terminal, inclusive of the display panel
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

Some demonstrative embodiments of the invention include a method device and/or system of displaying an image on a display having an array of sub-pixel elements. The method may include, for example, obtaining a first set of one or more values by sampling values of one or more sub-pixel value-holders associated with one or more of said sub-pixel elements, the first set of values corresponding to one or more sub-pixels of a first frame of said image; receiving a second set of values corresponding to one or more sub-pixels of a second frame of said image; and updating the values of one or more of the sub-pixel value-holders based on the first and second sets of values. Other embodiments are described and claimed.

Claims

1. A method of displaying an image on a liquid crystal display having an array of sub-pixel elements, the method comprising:

applying control signals to data lines connected to the sub-pixel elements from column drivers;

obtaining a first set of one or more values from the column drivers by sampling values of one or more sub-pixel value-holders associated with one or more of said sub-pixel elements, the first set of values corresponding to one or more sub-pixels of a first frame of said image;

receiving a second set of values corresponding to one or more sub-pixels of a second frame of said image; and

updating the values of one or more of the sub-pixel value-holders based on the first and second sets of values, wherein the sub-pixel value holders are storage capacitors within the sub-pixel elements.

2. The method of claim 1, wherein the sub-pixel elements comprise liquid crystal elements.

3. The method of claim 1, further comprising activating the sub-pixel elements based on the values held by the sub-pixel value-holders to display the second frame of said image.

4. The method of claim 1, wherein sampling the sub-pixel value-holders comprises extracting voltage values.

5. The method of claim 4, further comprising multiplexing the extracted voltage values at different time slots.

6. The method of claim 1, wherein the one or more sub-pixel elements comprise a row of sub-pixels.

7. The method of claim 1, comprising adjusting the timing of the sampled first set of values to be substantially concurrent with the received second set of values.

8. The method of claim 7, wherein adjusting the timing comprises storing the second set of values in a buffer.

9. The method of claim 1, wherein each storage capacitor is connected to a data line.

10. The method of claim 1, wherein the values of one or more of the sub-pixel value-holders are updated by using a look-up table storing output signal values corresponding to a difference between the first and second sets of values.

11. A liquid crystal display device to generate an image to be displayed using an array of sub-pixel elements, the device comprising:

column drivers to apply control signals to data lines connected to the sub-pixel elements;

an extractor to obtain a first set of one or more values from the column drivers by sampling values of one or more sub-pixel value-holders operatively associated with one or more of said sub-pixel elements, the first set of values corresponding to one or more sub-pixels of a first frame of said image;

a controller to provide a second set of values corresponding to one or more sub-pixels of a second frame of said image; and

a feed forward driving module to update the values of the sub-pixel value-holders based on the first and second set of values, wherein the sub-pixel value holders are storage capacitors within the sub-pixel elements.

12. The device of claim 11, wherein the sub-pixel elements comprise liquid crystal elements.

13. The device of claim 11, wherein the controller is to activate the sub-pixel elements to display the second frame of the image based on the values held by the sub-pixel value-holders.

14. The device of claim 11, wherein at least one of the sub-pixel value-holders comprises a capacitor controlled by a gate.

15. The device of claim 11, wherein the extractor comprises:

one or more sample-and-hold modules to sample one or more corresponding sub-pixel value-holders, and to adjust the sampled first set of values to different time slots; and

a multiplexer to combine the sampled first set of values.

16. The device of claim 11, wherein the one or more sub-pixel elements comprise a row of sub-pixels.

17. The device of claim 11, wherein the controller is to adjust the timing of the sampled first set of values and the received second set of values to be substantially concurrent at the feed-forward driving module.

18. The device of claim 11, further comprising a buffer to store the second set of values received from the controller.

19. The liquid crystal display device of claim 11, wherein each storage capacitor is connected to a data line.

20. The liquid crystal display device of claim 11, wherein the values of one or more of the sub-pixel value-holders are updated by using a look-up table storing output signal values corresponding to a difference between the first and second sets of values.