# US 10,504,398 B2 · Driving method for display panel

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- Number: US 10,504,398 B2
- Document ID: US10504398B2
- Status: Granted
- Kind: B2
- Application number: 15/749,243
- Filed: 2017-11-17
- Published: 2019-03-21
- Granted: 2019-12-10
- Earliest claimed: 2017-09-15
- Assignees: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Applicants: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Inventors: Tingting Zhang; Chun-hung Huang; Cong Wang
- Web page: https://patentgrep.com/patent/US10504398B2

## CPC

- G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)}
- G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters}
- G09G 3/36: using liquid crystals
- H10D 86/40: characterised by multiple TFTs
- H10D 86/60: wherein the TFTs are in active matrices
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G09G 2310/0202: Addressing of scan or signal lines
- G09G 2310/0264: Details of driving circuits
- G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
- 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)
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES

## Abstract

The present invention provides a driving method for a display panel. In an n-th scanning period, the pixel unit on the i-th row and an x-th column receives data signals. At least two subpixels with different colors on the i-th row and the x-th column of pixel unit receive the data signals according to a first sequence. In an (n+1)th scanning period, the pixel unit on the j-th row and an x-th column receives data signals. At least two subpixels with different colors on the j-th row and the x-th column of pixel unit receive the data signals according to a second sequence. A color of the subpixel which last receives the data signal in the first sequence is the same as a color of the subpixel which first receives the data signal in the second sequence.

## Claims

### Claim 1

A driving method for a display panel, wherein the display panel comprises a plurality of rows and columns of pixel units arranged in a matrix, each of the pixel units comprises at least two subpixels with different colors and the at least two subpixels of each of the pixel units are arranged in an arrangement sequence, wherein in each scanning period, scanning signals scan one of the rows of the pixel units, and the driving method for the display panel comprises:
in an n-th scanning period, receiving data signals by the pixel unit on the i-th row and an x-th column, wherein the at least two subpixels with different colors on the i-th row and the x-th column of pixel unit receive the data signals according to a first activating sequence such that the at least two subpixels are activated to display different colors in a first color displaying sequence that is determined according to the arrangement sequence of the at least two subpixels of the i-th row and the x-th column and the first activating sequence, wherein each of n, i, and x is a natural number;
in an (n+1)th scanning period, receiving data signals by the pixel unit on the j-th row and an x-th column, wherein the at least two subpixels with different colors on the j-th row and the x-th column of pixel unit receive the data signals according to a second activating sequence such that the at least two subpixels are activated to display different colors in a second color displaying sequence that is determined according to the arrangement sequence of the at least two subpixels of the j-th row and the x-th column and the second activating sequence, wherein j and i are different natural numbers;
wherein the arrangement sequence of the at least two subpixels of the i-th row and the x-th column and the arrangement sequence of the at least two subpixels of the j-th row and the x-th column are each a fixed sequence and second activating sequence is different from the first activating sequence such that the second color displaying sequence is different from the first color display sequence and such that a color of the first color displaying sequence that is displayed by the subpixel which last receives the data signal in the first activating sequence is the same as a color of the second color displaying sequence that is displayed by the subpixel which first receives the data signal in the second activating sequence, wherein the data signal of the subpixel which last receives the data signal in the first activating sequence is the same as the data signal of the subpixel which first receives the data signal in the second activating sequence such that the data signal of the subpixel which last receives the data signal in the first activating sequence is the same as the data signal of the subpixel which first receives the data signal in the second activating sequence are both high level or both low level.

### Claim 2 (depends on 1)

The driving method for the display panel according to claim 1, wherein each column of the pixel units comprises at least two columns of subpixels, each column of the pixel units corresponds to a data line and a multiplexing switch, and the data line is configured to provide the data signals, and the multiplexing switch comprises at least two control switches, each of the control switches is electrically connected with the data line and one column of subpixels, and each of the control switches is electrically connected to the different columns of subpixels; and the driving method for the display panel further comprises:
in the n-th scanning period, receiving at least two control signals by the multiplexing switch, wherein the at least two control signals control the at least two control switches to let the data lines and the at least two subpixels with different colors of the pixel unit on the i-th row and the x-th column be electrically connected, according to the first sequence;
in the (n+1)th scanning period, receiving at least two control signals by the multiplexing switch, wherein the at least two control signals control the at least two control switches to let the data lines and the at least two subpixels with different colors of the pixel unit of the j-th row and the x-th column be electrically connected, according to the second sequence.

### Claim 3 (depends on 2)

The driving method for the display panel according to claim 2, wherein each of the control signals controls one of the at least two control switches to turn on, and the data line is electrically connected with the subpixel which is electrically connected with the control switch after each of the control switches is turned on.

### Claim 4 (depends on 2)

The driving method for the display panel according to claim 2, wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

### Claim 5 (depends on 3)

The driving method for the display panel according to claim 3, wherein each of the pixel units comprises four subpixels with different colors, each column of the pixel units comprises four columns of subpixels, the multiplexing switch comprises four control switches, and an m-th control switch is electrically connected with the data line and the m-th column of subpixels; wherein m is a natural number between 1 and 4.

### Claim 6 (depends on 3)

The driving method for the display panel according to claim 3, wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

### Claim 7 (depends on 5)

The driving method for the display panel according to claim 5, wherein in each scanning period, the multiplexing switch receives four control signals, each of the control signals comprises four components, the control switch is a thin film transistor, a source electrode of a m-th thin film transistor is electrically connected with the data line, a drain electrode of the m-th thin film transistor is electrically connected with a m-th column of subpixels, and a gate electrode of the m-th TFT receives a m-th component of each control signal in each scanning period.

### Claim 8 (depends on 5)

The driving method for the display panel according to claim 5, wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

### Claim 9 (depends on 7)

The driving method for the display panel according to claim 7, wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

### Claim 10 (depends on 1)

The driving method for the display panel according to claim 1, wherein each of the pixel units comprises four subpixels with different colors, each two columns of pixel units comprise eight columns of subpixels, two adjacent columns of the pixel units correspond to two data lines and a multiplexing switch, the two data lines are used to provide data signals, and the multiplexing switch comprises eight control switches; when m is 1 or 4, a m-th control switch is electrically connected with a first data line and a m-th column of subpixels; when m is 2 or 3, the m-th control switch is electrically connected with the first data line and a (m+4)th column of subpixels; when m is 5 or 8, the m-th control switch is electrically connected with a second data line and the m-th column of subpixels; when m is 6 or 7, the m-th control switch is electrically connected to the second data line and the (m−4)th column of subpixels; and the driving method for the display panel further comprises:
in the n-th scanning period, receiving four control signals by the multiplexing switch receives, controlling a first control switch, a fourth control switch, a sixth control switch, and a seventh control switch by the four control signals to let the four subpixels with different colors of the pixel unit on the i-th row and x-th column be electrically connected with a corresponding data line according to the first sequence;
in the (n+1)th scanning period, receiving four control signals by the multiplexing switch, controlling the first control switch, the fourth control switch, the sixth control switch, and the seventh control switch by the four control signals to let the four subpixels with different colors of the pixel unit on the j-th row and x-th column be electrically connected with a corresponding data line according to the second sequence.

### Claim 11 (depends on 10)

The driving method for the display panel according to claim 10, wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

### Claim 12 (depends on 10)

The driving method for the display panel according to claim 10, wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+2.

### Claim 13 (depends on 12)

The driving method for the display panel according to claim 12, wherein the driving method for the display panel further comprises:
in a (n+2)th scanning period, receiving four control signals by the multiplexing switch, controlling the first control switch, the fourth control switch, the sixth control switch, and the seventh control switch by the four control signals to let the four subpixels with different colors of the pixel unit on the (i+1)th row and x-th column be electrically connected with a corresponding data line according to a third sequence, wherein the four subpixels with different colors of the pixel unit on the (i+1)th row and x-th column receive the data signals according to the third sequence;
in a (n+3)th scanning period, receiving four control signals by the multiplexing switch, controlling the first control switch, the fourth control switch, the sixth control switch, and the seventh control switch by the four control signals to let the four subpixels with different colors of the pixel unit on the (i+3)th row and x-th column be electrically connected with a corresponding data line according to a fourth sequence, wherein the four subpixels with different colors of the pixel unit on the (i+3)th row and x-th column receive the data signals according to the fourth sequence;
wherein a color of the subpixel which last receives the data signal in the third sequence is the same as a color of the subpixel which first receives the data signal in the fourth sequence, wherein the data signal of the subpixel which last receives the data signal in the third sequence is the same as the data signal of the subpixel which first receives the data signal in the fourth sequence.

### Claim 14 (depends on 13)

The driving method for the display panel according to claim 13, wherein
the pixel unit on the i-th row and the x-th column sequentially comprises a red subpixel, a green subpixel, a blue subpixel, and a white subpixel along a row direction;
the pixel unit on the (i+1)th row and the x-th column sequentially comprises a green subpixel, a white subpixel, a red subpixel, and a blue subpixel along the row direction;
the pixel unit on the (i+2)th row and the x-th column sequentially comprises a red subpixel, a blue subpixel, a green subpixel, and a white subpixel along the row direction;
the pixel unit on the (i+3)th row and the x-th column sequentially comprises a green subpixel, a white subpixel, a blue subpixel, and a red subpixel along the row direction;
an arrangement order of the subpixels in the pixel unit on the i-th row and (x+1)th column is the same as an arrangement order of the subpixels of the pixel unit on the i-th row and x-th column, an arrangement order of the subpixels in the pixel unit on the (i+4)th row and x-th column is the same as an arrangement order of the subpixels of the pixel unit on the i-th row and x-th column.

### Claim 15 (depends on 13)

The driving method for the display panel according to claim 13, wherein the data signal received by the white subpixel in each of the pixel units is at a low level, the data signals received by the red, green and blue subpixels in each of the pixel units are at a high level; in the first sequence and the third sequence, the white subpixel is the last subpixel which receives the data signal.

### Claim 16 (depends on 14)

The driving method for the display panel according to claim 14, wherein the data signal received by the white subpixel in each of the pixel units is at a low level, the data signals received by the red, green and blue subpixels in each of the pixel units are at a high level; in the first sequence and the third sequence, the white subpixel is the last subpixel which receives the data signal.

### Claim 17 (depends on 1)

The driving method for the display panel according to claim 1, wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.