Method for driving a liquid crystal display device at higher resolution

• US 9,343,018 B2
• Filed: 06/23/2014
• Issued: 05/17/2016
• Est. Priority Date: 04/08/2009
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Kimura, Hajime
• Primary Examiner(s): Misleh, Justin P
• Application Number:
  US14/311,479
• Publication Number:
  US 20140300783A1
• Time in Patent Office: 694 Days
• Field of Search: None
• US Class Current: 1/1
• 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 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 3/36 using liquid crystals
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3685 Details of drivers for data electrodes
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: H04N 5/142 Edging; Contouring
• CPC Class Codes: H04N 5/208 for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
• CPC Class Codes: H04N 7/0125 one of the standards being a high definition standard

Abstract

The resolution of a low-resolution image is made high and a stereoscopic image is displayed. Resolution is made high by super-resolution processing. In this case, the super-resolution processing is performed after edge enhancement processing is performed. Accordingly, a stereoscopic image with high resolution and high quality can be displayed. Alternatively, after image analysis processing is performed, edge enhancement processing and super-resolution processing are concurrently performed. Accordingly, processing time can be shortened.

Claims

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

performing a frame interpolation processing which uses a first part of a first data and creates a second data;

performing a first super-resolution processing which uses the second data and creates a third data;

performing a second super-resolution processing which uses a second part of the first data and creates a fourth data;

performing a first local dimming processing which uses a third part of the first data and creates a fifth data; and

performing a second local dimming processing which uses the third data and the fourth data and creates a sixth data.

2. The method according to claim 1, wherein the fifth data is configured to control a luminance of a backlight.

3. The method according to claim 1, wherein the sixth data is configured to determine a video signal of each pixel.

4. The method according to claim 1, wherein the first super-resolution processing is performed by a first processing system and the second super-resolution processing is performed by a second processing system.

5. The method according to claim 1, wherein the first super-resolution processing and the second super-resolution processing are performed at the same time.

6. A method for driving a liquid crystal display device, comprising:

performing a frame interpolation processing which uses a first part of a first data and creates a second data;

performing a first edge enhancement processing which uses the second data and creates a third data;

performing a second edge enhancement processing which uses a second part of the first data and creates a fourth data;

performing a first super-resolution processing which uses the third data and creates a fifth data;

performing a second super-resolution processing which uses the fourth data and creates a sixth data;

performing a first local dimming processing which uses a third part of the first data and creates a seventh data; and

performing a second local dimming processing which uses the fifth data and the sixth data and creates an eighth data.

7. The method according to claim 6, wherein the seventh data is configured to control a luminance of a backlight.

8. The method according to claim 6, wherein the eighth data is configured to determine a video signal of each pixel.

9. The method according to claim 6, wherein the first super-resolution processing is performed by a first processing system and the second super-resolution processing is performed by a second processing system.

10. The method according to claim 6, wherein the first super-resolution processing and the second super-resolution processing are performed at the same time.

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

performing a frame interpolation processing and an edge enhancement processing which uses a first data and creates a second data;

performing a super-resolution processing which uses the second data and creates a third data;

performing a first local dimming processing which uses the third data and creates a fourth data, the fourth data being configured to control a luminance of a backlight concurrently with at least one of the frame interpolation processing, the edge enhancement processing, and the super-resolution processing;

performing a second local dimming processing which uses the fourth data and creates a fifth data being configured to determine a video signal of each pixel; and

performing an overdrive processing which uses the fifth data and creates a sixth data.

12. The method according to claim 11, wherein the frame interpolation processing is performed after the edge enhancement processing.

13. The method according to claim 11, wherein the edge enhancement processing is performed after the frame interpolation processing.