DISPLAY DEVICE AND METHOD AND DEVICE OF DRIVING THE DISPLAY DEVICE

• US 20190311687A1
• Filed: 09/01/2017
• Published: 10/10/2019
• Est. Priority Date: 12/23/2016
• Status: Active Grant

• Current Assignee: Chongqing HKC Optoelectronics Technology Co., Ltd. (Shenzhen Huike Investment Holding Co., Ltd.), HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Original Assignee: Chongqing HKC Optoelectronics Technology Co., Ltd. (Shenzhen Huike Investment Holding Co., Ltd.), HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Inventors: CHEN, Yu-Jen
• Granted Patent: US 10,818,251 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2300/0447 for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2360/16 Calculation or use of calculated indices related to luminance levels in display data
• 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 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A display device and a method and device of driving a display device are provided. The method includes: dividing sub-pixels of a display panel into a plurality of array blocks, and selecting at least one of the sub-pixels in the blocks as a luminous pixel; receiving a to-be-displayed image, acquiring a pixel signal of a pixel of the display panel, obtaining the pixel signal from a look-up table, and obtaining first driving signals of the sub-pixels of each of the pixels; calculating a first brightness signal of driving the luminous pixel in the array block according to the first driving signals of the sub-pixels in the same array blocks; and using the first brightness signal to drive the luminous pixel, and using the pixel signal to drive other ones of the sub-pixels.

Claims

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

dividing sub-pixels of a display panel into a plurality of array blocks, and selecting at least one of the sub-pixels in each of the array blocks as a luminous pixel;

receiving a to-be-displayed image, acquiring a pixel signal of a pixel of the display panel, obtaining the pixel signal from a look-up table, and obtaining first driving signals of the sub-pixels;

calculating a first brightness signal of driving the luminous pixel in the array block according to the first driving signals of the sub-pixels in each of the array blocks; and

using the first brightness signal to drive the luminous pixel, and using the pixel signal to drive other ones of the sub-pixels.

2. The method of driving the display device according to claim 1, wherein relative positions between the luminous pixel and other ones of the sub-pixels in each of the array blocks are the same.

3. The method of driving the display device according to claim 1, wherein the step of dividing the sub-pixels of the display panel into the a plurality of array blocks, and selecting the at least one of the sub-pixels in the blocks as the luminous pixel comprises:

regarding neighboring four of the sub-pixels as a block, and selecting any one of the sub-pixels in the block as the one luminous pixel.

4. The method of driving the display device according to claim 2, wherein the step of the dividing sub-pixels of the display panel into the a plurality of array blocks, and selecting the at least one of the sub-pixels in the blocks as the luminous pixel comprises:

regarding neighboring four of the sub-pixels as a block, and selecting any one of the sub-pixels in the block as the one luminous pixel.

5. The method of driving the display device according to claim 1, wherein the step of the dividing sub-pixels of the display panel into the a plurality of array blocks, and selecting the at least one of the sub-pixels in the blocks as the luminous pixel comprises:

regarding neighboring nine of the sub-pixels as a block, and selecting one of the sub-pixels located at a center of the block as the one luminous pixel.

6. The method of driving the display device according to claim 2, wherein the step of the dividing sub-pixels of the display panel into the a plurality of array blocks, and selecting the at least one of the sub-pixels in the blocks as the luminous pixel comprises:

regarding neighboring nine of the sub-pixels as a block, and selecting one of the sub-pixels located at a center of the block as the one luminous pixel.

7. The method of driving the display device according to claim 1, wherein the step of calculating the first brightness signal of driving the luminous pixel in the array block according to the first driving signals of the sub-pixels in the same array blocks is performed according to:

L=1*L5+0.8*(L2+L4+L6+L8)+0.4*(L1+L3+L7+L9);

where L1, L3, L7 and L9 represent the first driving signals of the four sub-pixels at diagonal positions;

L2, L4, L6 and L8 represent the first driving signals of another four sub-pixels neighboring the sub-pixel located at a center position of the array block; and

L5 represents the first driving signal of the luminous pixel, and L represents the first brightness signal which needs to be calculated.

8. A driving device of a display device, comprising:

a region dividing module dividing sub-pixels of a display panel into a plurality of array blocks, and selecting at least one of the sub-pixels in each of the array blocks as a luminous pixel;

a signal acquiring module receiving a to-be-displayed image, acquiring a pixel signal of the pixel of the display panel, obtaining the pixel signal from a look-up table, and obtaining first driving signals of the sub-pixels of each of the pixels;

a calculating module calculating a first brightness signal of driving the luminous pixel in the array block according to the first driving signals of the sub-pixels in each of the array blocks; and

a driving module using the first brightness signal to drive the luminous pixel, and using a pixel signal to drive other ones of the sub-pixels.

9. The driving device of the display device according to claim 8, wherein relative positions between the luminous pixel and other ones of the sub-pixels in each of the array blocks are the same.

10. The driving device of the display device according to claim 8, wherein the region dividing module regards neighboring four of the sub-pixels as a block, and selects any sub-pixel in the block as the one luminous pixel.

11. The driving device of the display device according to claim 8, wherein the region dividing module regards neighboring nine of the sub-pixels as a block, and selects one of the sub-pixels located at a center of the array block as the one luminous pixel.

12. The driving device of the display device according to claim 9, wherein the region dividing module regards neighboring nine of the sub-pixels as a block, and selects one of the sub-pixels located at a center of the block as the one luminous pixel.

13. The driving device of the display device according to claim 8, wherein the calculating module calculates the first brightness signal according to:

L=1*L5+0.8*(L2+L4+L6+L8)+0.4*(L1+L3+L7+L9);

where L1, L3, L7 and L9 represent the first driving signals of the four sub-pixels at diagonal positions;

L2, L4, L6 and L8 represent the first driving signals of another four sub-pixels neighboring the sub-pixel located at a center position of the block; and

L5 represents the first driving signal of the luminous pixel, and L represents the first brightness signal which needs to be calculated.

14. A display device, comprising:

a display panel;

a driving part; and

the driving device of the display device of claim 8, the driving device of the display device comprising;

a region dividing module dividing sub-pixels of the display panel into a plurality of array blocks, and selecting at least one of the sub-pixels in each of the array blocks as a luminous pixel,

a signal acquiring module receiving a to-be-displayed image, acquiring a pixel signal of the pixel of the display panel, obtaining the pixel signal from a look-up table, and obtaining first driving signals of the sub-pixels of each of the pixels,

a calculating module calculating a first brightness signal of driving the luminous pixel in the array block according to the first driving signals of the sub-pixels in each of the array blocks, and

a driving module using the first brightness signal to drive the luminous pixel, and using a pixel signal to drive other ones of the sub-pixels.

wherein the calculating module calculates the first brightness signal according to;

L=1*L5+0.8*(L2+L4+L6+L8)+0.4*(L1+L3+L7+L9);

where L1, L3, L7 and L9 represent the first driving signals of the four sub-pixels at diagonal positions;

L2, L4, L6 and L8 represent the first driving signals of another four sub-pixels neighboring the sub-pixel located at a center position of the block; and

L5 represents the first driving signal of the luminous pixel, and L represents the first brightness signal which needs to be calculated.