# US 11,308,901 B2 · Pixel driving method, pixel driving apparatus and computer device

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- Number: US 11,308,901 B2
- Document ID: US11308901B2
- Status: Granted
- Kind: B2
- Application number: 17/273,299
- Filed: 2018-12-17
- Published: 2021-10-21
- Granted: 2022-04-19
- Earliest claimed: 2018-11-20
- Assignees: Hkc Corporation Limited
- Applicants: Hkc Corporation Limited
- Inventors: Chih Tsung Kang
- Web page: https://patentgrep.com/patent/US11308901B2

## CPC

- 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)}
- G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)}
- G09G 2300/0447: for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G09G 2310/027: Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
- G09G 2320/0242: Compensation of deficiencies in the appearance of colours
- G09G 2320/0271: Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G 2320/028: by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
- G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

A pixel driving method is provided. The method includes: acquiring an average pixel signal of sub-pixels of each color in each unit pixel in a pixel block, where the unit pixel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel; acquiring a color signal of the pixel block according to the average pixel signal of the sub-pixels of each color; determining a color that the pixel block deflects to during display according to the color signal and a preset main color-rendering determination condition, and loading first-type gray-scale signals to a part of same-color sub-pixels in the pixel block and loading second-type gray-scale signals to the remaining same-color sub-pixels based on a preset rule according to the determination result, where the first-type gray-scale signals are not equal to the corresponding second-type gray-scale signals.

## Claims

### Claim 1

A pixel driving method, comprising:
acquiring an average pixel signal of sub-pixels of each color in each unit pixel in a pixel block, wherein the unit pixel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel;
acquiring a color signal of the pixel block according to the average pixel signal of the sub-pixels of each color; and
loading first-type gray-scale signals to a part of same-color sub-pixels in the pixel block and loading second-type gray-scale signals to the remaining same-color sub-pixels based on a preset rule according to the color signal and a preset main color-rendering determination condition, wherein the first-type gray-scale signals are not equal to the corresponding second-type gray-scale signals_;
wherein the main color-rendering determination condition comprises a red-rendering condition, and the step of loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
if the color signal meets the red-rendering condition, loading the first-type gray-scale signal and the second-type gray-scale signal respectively to two adjacent red sub-pixels of each first grouping unit in the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units;
and loading the first-type gray-scale signals to three green sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to one green sub-pixel in the second grouping unit, wherein the second grouping unit comprises four adjacent unit pixels, and no same unit pixel exists in each of the second grouping units.

### Claim 2 (depends on 1)

The pixel driving method according to claim 1, wherein the main color-rendering determination condition comprises a green-rendering condition, and the step of loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
if the color signal meets the green-rendering condition, loading the first-type gray-scale signal and the second-type gray-scale signal respectively to two adjacent green sub-pixels of each first grouping unit in the pixel block;
and loading the first-type gray-scale signals to three red sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to one red sub-pixel in the second grouping unit.

### Claim 3 (depends on 1)

The pixel driving method according to claim 1, wherein the step of loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
loading the first-type gray-scale signal and the second-type gray-scale signal respectively to blue sub-pixels of each first grouping unit in the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units.

### Claim 4 (depends on 2)

The pixel driving method according to claim 2, wherein the step of loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
loading the first-type gray-scale signal and the second-type gray-scale signal respectively to blue sub-pixels of each first grouping unit in the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units.

### Claim 5 (depends on 1)

The pixel driving method according to claim 1, wherein the main color-rendering determination condition comprises a blue-rendering condition, and the step of loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
if the color signal meets the blue-rendering condition, loading the first-type gray-scale signals to three red sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to the remaining one red sub-pixel in the second grouping unit;
and loading the first-type gray-scale signals to three green sub-pixels of each of the second grouping units in the pixel block and loading the second-type gray-scale signal to the remaining one green sub-pixel in the second grouping unit.

### Claim 6 (depends on 2)

The pixel driving method according to claim 2, wherein the main color-rendering determination condition comprises a blue-rendering condition, and the step of loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
if the color signal meets the blue-rendering condition, loading the first-type gray-scale signals to three red sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to the remaining one red sub-pixel in the second grouping unit;
and loading the first-type gray-scale signals to three green sub-pixels of each of the second grouping units in the pixel block and loading the second-type gray-scale signal to the remaining one green sub-pixel in the second grouping unit.

### Claim 7 (depends on 1)

The pixel driving method according to claim 1, wherein before the step of acquiring the average pixel signal of the sub-pixels of each color in each unit pixel in the pixel block, further comprising:
loading a group of initial high and initial low gray-scale signals to same-color sub-pixels in a first grouping unit of the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units.

### Claim 8 (depends on 1)

The pixel driving method according to claim 1, wherein the color signal comprises chroma and hue angle, and the red-rendering condition is:
0°<H≤45° or 315°<H≤360°, and CTL1≤C≤CTH2
wherein the H is chroma, the C is hue angle, the CTL1 is the lowest predefined red hue threshold value, and the CTH2 is the highest predefined red hue threshold value.

### Claim 9

A pixel driving apparatus, comprising:
an average signal acquisition circuit configured to acquire an average pixel signal of sub-pixels of each color in each unit pixel in a pixel block, wherein the unit pixel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel;
a color signal acquisition circuit configured to acquire a color signal of the pixel block according to the average pixel signal of the sub-pixels of each color; and
a driving signal loading circuit configured to load first-type gray-scale signals to a part of same-color sub-pixels in the pixel block and loading second-type gray-scale signals to the remaining same-color sub-pixels based on a preset rule according to the color signal and a preset main color-rendering determination condition, wherein the first-type gray-scale signals are not equal to the corresponding second-type gray-scale signals;
wherein the main color-rendering determination condition comprises a red-rendering condition, and the operation of the driving signal loading circuit loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
if the color signal meets the red-rendering condition, loading the first-type gray-scale signal and the second-type gray-scale signal respectively to two adjacent red sub-pixels of each first grouping unit in the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units;
and loading the first-type gray-scale signals to three green sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to one green sub-pixel in the second grouping unit, wherein the second grouping unit comprises four adjacent unit pixels, and no same unit pixel exists in each of the second grouping units.

### Claim 10

A computer device, comprising a non-transitory computer readable memory medium having computer-readable instructions stored therein and one or more processors, wherein the computer-readable instructions, when executed by the one or more processors, cause the one or more processors to perform the steps of:
acquiring an average pixel signal of sub-pixels of each color in each unit pixel in a pixel block, wherein the unit pixel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel;
acquiring a color signal of the pixel block according to the average pixel signal of the sub-pixels of each color; and
loading first-type gray-scale signals to a part of same-color sub-pixels in the pixel block and loading second-type gray-scale signals to the remaining same-color sub-pixels based on a preset rule according to the color signal and a preset main color-rendering determination condition, wherein the first-type gray-scale signals are not equal to the corresponding second-type gray-scale sigmals;
wherein the main color-rendering determination condition comprises a red-rendering condition, and the step of loading the first-type gray-scale signals to the part of same-color sub-pixels in the pixel block and loading the second-type gray-scale signals to the remaining same-color sub-pixels based on the preset rule according to the color signal and the preset main color-rendering determination condition comprises:
if the color signal meets the red-rendering condition, loading the first-type gray-scale signal and the second-type gray-scale signal respectively to two adjacent red sub-pixels of each first grouping unit in the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units;
and loading the first-type gray-scale signals to three green sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to one green sub-pixel in the second grouping unit, wherein the second grouping unit comprises four adjacent unit pixels, and no same unit pixel exists in each of the second grouping units.

### Claim 11 (depends on 10)

The computer device according to claim 10, wherein the main color-rendering determination condition further comprises a green-rendering condition, and wherein the processor, when executing the computer readable instructions, further performs the steps of:
if the color signal meets the green-rendering condition, loading the first-type gray-scale signal and the second-type gray-scale signal respectively to two adjacent green sub-pixels of each first grouping unit in the pixel block;
and loading the first-type gray-scale signals to three red sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to one red sub-pixel in the second grouping unit.

### Claim 12 (depends on 10)

The computer device according to claim 10, wherein the processor, when executing the computer readable instructions, further performs the steps of:
loading the first-type gray-scale signal and the second-type gray-scale signal respectively to blue sub-pixels of each first grouping unit in the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units.

### Claim 13 (depends on 11)

The computer device according to claim 11, wherein the processor, when executing the computer readable instructions, further performs the steps of:
loading the first-type gray-scale signal and the second-type gray-scale signal respectively to blue sub-pixels of each first grouping unit in the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units.

### Claim 14 (depends on 10)

The computer device according to claim 10, wherein the main color-rendering determination condition further comprises a blue-rendering condition, and wherein the processor, when executing the computer readable instructions, further performs the steps of:
if the color signal meets the blue-rendering condition, loading the first-type gray-scale signals to three red sub-pixels of each second grouping unit in the pixel block and loading the second-type gray-scale signal to the remaining one red sub-pixel in the second grouping unit;
and loading the first-type gray-scale signals to three green sub-pixels of each of the second grouping units in the pixel block and loading the second-type gray-scale signal to the remaining one green sub-pixel in the second grouping unit.

### Claim 15 (depends on 10)

The computer device according to claim 10, wherein the processor, when executing the computer readable instructions, further performs the steps of:
loading a group of initial high and initial low gray-scale signals to same-color sub-pixels in a first grouping unit of the pixel block, wherein the first grouping unit comprises two adjacent unit pixels, and no same unit pixel exists in each of the first grouping units.

### Claim 16 (depends on 10)

The computer device according to claim 10, wherein the color signal comprises chroma and hue angle, and the red-rendering condition is:
0°<H≤45° or 315°<H≤360°, and CTL1≤C≤CTH2
wherein the H is chroma, the C is hue angle, the CTL1 is the lowest predefined red hue threshold value, and the CTH2 is the highest predefined red hue threshold value.