Display device

• US 10,657,872 B2
• Filed: 10/12/2017
• Issued: 05/19/2020
• Est. Priority Date: 10/21/2016
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Tien, Kun-Cheng, Liao, Chien-Huang, Wu, Jia-Long
• Primary Examiner(s): Patel, Nitin
• Application Number:
  US15/782,507
• Publication Number:
  US 20180114478A1
• Time in Patent Office: 950 Days
• 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 2320/0219 Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling
• CPC Class Codes: G09G 2320/0238 Improving the black level
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• 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 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2320/0673 for control of gamma adjustment, e.g. selecting another gamma curve
• CPC Class Codes: G09G 2320/068 for control of viewing angle adjustment
• CPC Class Codes: G09G 3/2074 using sub-pixels
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3666 with the matrix divided into sections
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 5/026 Control of mixing and/or overlay of colours in general G09G5/022 and G09G5/024 take precedence

Abstract

A display device includes a plurality of gate lines, configured to output corresponding scan signals to corresponding pixels; a plurality of data lines, configured to receive display data and output corresponding pixel voltages to corresponding pixels, where the plurality of data lines includes 12 successive data lines from left to right; a gate driver, electrically coupled to the gate lines, configured to drive the pixels; and a data driver, electrically coupled to the data lines, configured to provide data signals to the pixels, where the data driver respectively provides data with polarities of: positive, negative, positive, negative, positive, negative, negative, positive, negative, positive, negative, and positive to the 12 data lines, and each column of pixels includes pixels in two forms; when the display data has a same gray scale, the data driver respectively provides two different pixel voltages to the pixels in two forms.

Claims

1. A display device, comprising:

a plurality of pixels, comprising a first column of pixels, a second column of pixels, a third column of pixels, a fourth column of pixels, a fifth column of pixels, a sixth column of pixels, a seventh column of pixels, an eighth column of pixels, a ninth column of pixels, a tenth column of pixels, an eleventh column of pixels, and a twelfth column of pixels that are sequentially configured from left to right;

a plurality of gate lines, configured to output corresponding scan signals to corresponding pixels;

a plurality of data lines, the plurality of data lines comprising 12 successive data lines from left to right, configured to receive a piece of display data and output corresponding pixel voltages respectively to a first column of pixels, a second column of pixels, a third column of pixels, a fourth column of pixels, a fifth column of pixels, a sixth column of pixels, a seventh column of pixels, an eighth column of pixels, a ninth column of pixels, a tenth column of pixels, an eleventh column of pixels, and a twelfth column of pixels;

a gate driver, electrically coupled to the gate lines, configured to drive the plurality of pixels; and

a data driver, electrically coupled to the data lines, configured to provide data signals to the plurality of pixels, wherein the data driver respectively provides data with polarities of;

positive, negative, positive, negative, positive, negative, negative, positive, negative, positive, negative, and positive to the 12 data lines, and

each column of pixels comprises at least two of a pixel in a first form (PH) corresponding to a pixel voltage (VH), a pixel in a second form (PL) corresponding to a pixel voltage (VL), and a pixel in a third form (PI) corresponding to a pixel voltage (VI);

wherein a pixel group (Pt) comprises four pixels that display a same color;

one pixel in the first form (PH), two pixels in the second form (PL), and one pixel in the third form (PI); and

when the display data of the pixel in the first form (PH) of the pixel group (Pt) and that of the two pixels in the second form (PL) of the pixel group (Pt) have same gray scale, the data driver respectively provides a first pixel voltage and a second pixel voltage to the pixel in the first form (PH) of the pixel group (Pt) and the two pixels in the second form (PL) of the pixel group (Pt), and the first pixel voltage is greater than the second pixel voltage.

2. The display device according to claim 1, wherein a same column of pixels is electrically connected to a same data line, and each odd-numbered column of pixels sequentially receives the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and each even-numbered column of pixels sequentially receives the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

3. The display device according to claim 1, wherein a same column of pixels is electrically connected to different data lines, and each odd-numbered column of pixels sequentially receives the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and each even-numbered column of pixels sequentially receives the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

4. A display device, comprising:

a plurality of pixels, comprising a first column of pixels, a second column of pixels, a third column of pixels, a fourth column of pixels, a fifth column of pixels, a sixth column of pixels, a seventh column of pixels, an eighth column of pixels, a ninth column of pixels, a tenth column of pixels, an eleventh column of pixels, and a twelfth column of pixels that are sequentially configured from left to right;

a plurality of gate lines, configured to output corresponding scan signals to corresponding pixels;

a plurality of data lines, the plurality of data lines comprising 12 successive data lines from left to right, configured to receive a piece of display data and output corresponding pixel voltages respectively to a first column of pixels, a second column of pixels, a third column of pixels, a fourth column of pixels, a fifth column of pixels, a sixth column of pixels, a seventh column of pixels, an eighth column of pixels, a ninth column of pixels, a tenth column of pixels, an eleventh column of pixels, and a twelfth column of pixels;

a gate driver, electrically coupled to the gate lines, configured to drive the plurality of pixels; and

a data driver, electrically coupled to the data lines, configured to provide data signals to the plurality of pixels, wherein the data driver respectively provides data with polarities of;

positive, negative, positive, negative, positive, negative, positive, negative, positive, negative, positive, and negative to the 12 data lines, and

each column of pixels comprises at least two of a pixel in a first form (PH) corresponding to a pixel voltage (VH), a pixel in a second form (PL) corresponding to a pixel voltage (VL), and a pixel in a third form (PI) corresponding to a pixel voltage (VI);

wherein a pixel group (Pt) comprises four pixels that display a same color;

one pixel in the first form (PH), two pixels in the second form (PL), and one pixel in the third form (PI); and

when the display data of the pixel in the first form (PH) of the pixel group (Pt) and that of the two pixels in the second form (PL) of the pixel group (Pt) have same gray scale, the data driver respectively provides a first pixel voltage and a second pixel voltage to the pixel in the first form (PH) of the pixel group (Pt) and the two pixels in the second form (PL) of the pixel group (Pt), and the first pixel voltage is greater than the second pixel voltage.

5. The display device according to claim 4, wherein a same column of pixels is electrically connected to different data lines, and the first column, third column, fifth column, eighth column, tenth column, and twelfth column of pixels sequentially receive the second pixel voltage, the first pixel voltage, the second pixel voltage, and the first pixel voltage, and the second column, fourth column, sixth column, seventh column, ninth column, and eleventh column of pixels sequentially receive the first pixel voltage, the second pixel voltage, the first pixel voltage, and the second pixel voltage, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

6. The display device according to claim 4, wherein there are two data lines between any adjacent columns of pixels, and a same column of pixels is electrically connected to different data lines, and the first column, third column, fifth column, eighth column, tenth column, and twelfth column of pixels sequentially receive the second pixel voltage, the first pixel voltage, the second pixel voltage, and the first pixel voltage, and the second column, fourth column, sixth column, seventh column, ninth column, and eleventh column of pixels sequentially receive the first pixel voltage, the second pixel voltage, the first pixel voltage, and the second pixel voltage, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

7. The display device according to claim 4, wherein there are two data lines between any adjacent columns of pixels, and a same column of pixels is electrically connected to different data lines, and each odd-numbered column of pixels sequentially receives the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and each even-numbered column of pixels sequentially receives the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and directions in which odd-numbered lines of pixels are electrically connected to adjacent data lines are sequentially left, left, right, and right, and directions in which even-numbered lines of pixels are electrically connected to adjacent data lines are sequentially right, right, left, and left, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

8. The display device according to claim 4, wherein there are two data lines between any adjacent columns of pixels, and a same column of pixels is electrically connected to different data lines, and each odd-numbered column of pixels sequentially receives the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and each even-numbered column of pixels sequentially receives the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and directions in which odd-numbered lines of pixels are electrically connected to adjacent data lines are sequentially left, right, right, and left, and directions in which even-numbered lines of pixels are electrically connected to adjacent data lines are sequentially right, left, left, and right, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

9. The display device according to claim 4, wherein there are two data lines between any adjacent columns of pixels, and a same column of pixels is electrically connected to different data lines, and each odd-numbered column of pixels sequentially receives the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and each even-numbered column of pixels sequentially receives the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and directions in which a first line and a fourth line of pixels are electrically connected to adjacent data lines are sequentially left, left, right, and right, and directions in which a second line and a third line of pixels are electrically connected to adjacent data lines are sequentially right, right, left, and left, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

10. The display device according to claim 4, wherein there are two data lines between any adjacent columns of pixels, and a same column of pixels is electrically connected to different data lines, and each odd-numbered column of pixels sequentially receives the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and each even-numbered column of pixels sequentially receives the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and directions in which a first line and a fourth line of pixels are electrically connected to adjacent data lines are sequentially left, right, right, and left, and directions in which a second line and a third line of pixels are electrically connected to adjacent data lines are sequentially right, left, left, and right, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

11. A display device, comprising:

a plurality of pixels, comprising a first column of pixels, a second column of pixels, a third column of pixels, a fourth column of pixels, a fifth column of pixels, a sixth column of pixels, a seventh column of pixels, and an eighth column of pixels that are sequentially configured from left to right;

a plurality of gate lines, configured to output corresponding scan signals to corresponding pixels;

a plurality of data lines, the plurality of data lines comprising 8 successive data lines from left to right, configured to receive a piece of display data and output corresponding pixel voltages respectively to a first column of pixels, a second column of pixels, a third column of pixels, a fourth column of pixels, a fifth column of pixels, a sixth column of pixels, a seventh column of pixels, and an eighth column of pixels;

a gate driver, electrically coupled to the gate lines, configured to drive the plurality of pixels; and

a data driver, electrically coupled to the data lines, configured to provide data signals to the plurality of pixels, wherein the data driver respectively provides data with polarities of;

positive, negative, negative, positive, negative, positive, positive, and negative to the 8 data lines, and

each column of pixels comprises at least two of a pixel in a first form (PH) corresponding to a pixel voltage (VH), a pixel in a second form (PL) corresponding to a pixel voltage (VL), and a pixel in a third form (PI) corresponding to a pixel voltage (VI);

wherein a pixel group (Pt) comprises four pixels that display a same color;

one pixel in the first form (PH), two pixels in the second form (PL), and one pixel in the third form (PI); and

when the display data of the pixel in the first form (PH) of the pixel group (Pt) and that of the two pixels in the second form (PL) of the pixel group (Pt) have same gray scale, the data driver respectively provides a first pixel voltage and a second pixel voltage to the pixel in the first form (PH) of the pixel group (Pt) and the two pixels in the second form (PL) of the pixel group (Pt), and the first pixel voltage is greater than the second pixel voltage.

12. The display device according to claim 11, wherein there are two data lines between any adjacent columns of pixels, and a same column of pixels is electrically connected to different data lines, and each odd-numbered column of pixels sequentially receives the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and each even-numbered column of pixels sequentially receives the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and directions in which a first line and a third line of pixels are electrically connected to adjacent data lines are sequentially left, right, left, and right, and directions in which a second line and a fourth line of pixels are electrically connected to adjacent data lines are sequentially right, left, right, and left, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).

13. The display device according to claim 11, wherein there are two data lines between any adjacent columns of pixels, and a same column of pixels is electrically connected to different data lines, and the first column, second column, and third column of pixels sequentially receive the first pixel voltage, the second pixel voltage, the second pixel voltage, and the first pixel voltage, and the fourth column, the fifth column, and the sixth column of pixels sequentially receive the second pixel voltage, the first pixel voltage, the first pixel voltage, and the second pixel voltage, and directions in which a first line and a third line of pixels are electrically connected to adjacent data lines are sequentially left, right, left, and right, and directions in which a second line and a fourth line of pixels are electrically connected to adjacent data lines are sequentially right, left, right, and left, and each column of pixels comprises the pixel in the first form (PH) corresponding to the pixel voltage (VH), the pixel in the second form (PL) corresponding to the pixel voltage (VL), and the pixel in the third form (PI) corresponding to the pixel voltage (VI).