Method for driving display device

• US 8,970,638 B2
• Filed: 02/04/2010
• Issued: 03/03/2015
• Est. Priority Date: 02/06/2009
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Kimura, Hajime
• Primary Examiner(s): Okebato, Sahlu
• Application Number:
  US12/699,920
• Publication Number:
  US 20100201719A1
• Time in Patent Office: 1,853 Days
• Field of Search: 345/690, 345/698, 375/240.26, 348/446, 348/441, 348/452, 348/458
• US Class Current: 345/690
• CPC Class Codes: G06T 1/00 General purpose image data processing
• CPC Class Codes: G06T 2200/16 involving adaptation to the client's capabilities
• CPC Class Codes: G06T 2200/28 involving image processing hardware
• CPC Class Codes: G06T 2210/36 Level of detail
• CPC Class Codes: G06T 3/4053 based on super-resolution, i.e. the output image resolution being higher than the sensor resolution
• CPC Class Codes: G06T 3/4069 by subpixel displacements
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/0434 Flat panel display in which a field is applied parallel to the display plane
• CPC Class Codes: G09G 2300/0814 used for selection purposes, e.g. logical AND for partial update
• CPC Class Codes: G09G 2300/0876 Supplementary capacities in pixels having special driving circuits and electrodes instead of being connected to common electrode or ground; Use of additional capacitively coupled compensation electrodes
• CPC Class Codes: G09G 2310/0224 Details of interlacing
• CPC Class Codes: G09G 2310/0229 De-interlacing
• CPC Class Codes: G09G 2320/0252 Improving the response speed
• CPC Class Codes: G09G 2320/0257 Reduction of after-image effects
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 2320/106 Determination of movement vectors or equivalent parameters within the image
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• 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 2360/00 : Aspects of the architecture of display systems
• CPC Class Codes: G09G 3/3426 : the different display panel areas being distributed in two dimensions, e.g. matrix
• CPC Class Codes: G09G 3/3611 : Control of matrices with row and column drivers
• CPC Class Codes: G09G 3/3614 : Control of polarity reversal in general
• CPC Class Codes: G09G 3/3648 : using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 5/005 : Adapting incoming signals to the display format of the display terminal

Abstract

A low-resolution image is displayed at higher resolution and afterimages are reduced. Resolution is made higher by super-resolution processing. In this case, the super-resolution processing is performed after frame interpolation processing is performed. Further, in that case, the super-resolution processing is performed using a plurality of processing systems. Therefore, even when frame frequency is made higher, the super-resolution processing can be performed at high speed. Further, since frame rate doubling is performed by the frame interpolation processing, afterimages can be reduced.

Claims

1. A method for driving a display device, comprising:

performing a frame interpolation processing using a first image data and a second image data so that frame frequency can be made higher by the number of interpolated frames;

performing a first super-resolution processing on a third image data generated by the frame interpolation processing; and

performing a second super-resolution processing on the first image data,

wherein the frame interpolation processing and the second super-resolution processing are concurrently performed, and

wherein the first super-resolution processing is performed after the frame interpolation processing.

2. The method for driving a display device according to claim 1, further comprising a step of performing converting an interlace image into a progressive image before the frame interpolation processing.

3. The method for driving a display device according to claim 1, wherein at least one of the first super-resolution processing and the second super-resolution processing is performed in a part of a region in a screen.

4. A method for driving a display device, comprising:

performing a frame interpolation processing using a first image data and a second image data so that frame frequency can be made higher by the number of interpolated frames;

performing a first super-resolution processing on a third image data generated by the frame interpolation processing; and

performing a second super-resolution processing on the first image data,

wherein the frame interpolation processing and the second super-resolution processing are concurrently performed.

5. The method for driving a display device according to claim 4, further comprising a step of performing converting an interlace image into a progressive image before the frame interpolation processing.

6. The method for driving a display device according to claim 4, wherein the first super-resolution processing is performed in a part of a region in a screen.

7. The method for driving a display device according to claim 4, wherein the second super-resolution processing is performed in a part of a region in a screen.

8. A method for driving a display device, comprising:

performing a frame interpolation processing using a first image data and a second image data so that frame frequency can be made higher by the number of interpolated frames;

performing a first super-resolution processing on a third image data generated by the frame interpolation processing;

performing a second super-resolution processing on the first image data; and

performing a local dimming processing after the second super-resolution processing,

wherein the frame interpolation processing and the second super-resolution processing are concurrently performed.

9. The method for driving a display device according to claim 8, further comprising a step of performing converting an interlace image into a progressive image before the frame interpolation processing.

10. The method for driving a display device according to claim 8, wherein at least one of the first super-resolution processing and the second super-resolution processing is performed in a part of a region in a screen.

11. The method for driving a display device according to claim 8, wherein the local dimming processing is performed in a part of a region in a screen.

12. A method for driving a display device, comprising:

performing a frame interpolation processing using a first image data and a second image data so that frame frequency can be made higher by the number of interpolated frames;

performing a first super-resolution processing on a third image data generated by the frame interpolation processing;

performing a second super-resolution processing on the first image data;

performing a local dimming processing after the second super-resolution processing; and

performing an overdrive processing after the local dimming processing,

wherein the frame interpolation processing and the second super-resolution processing are concurrently performed.

13. The method for driving a display device according to claim 12, further comprising a step of performing converting an interlace image into a progressive image before the frame interpolation processing.

14. The method for driving a display device according to claim 12, wherein at least one of the first super-resolution processing and the second super-resolution processing is performed in a part of a region in a screen.

15. The method for driving a display device according to claim 12, wherein the local dimming processing is performed in a part of a region in a screen.

16. The method for driving a display device according to claim 12, wherein the overdrive processing is performed in a part of a region in a screen.