Display panel and display driver

• US 10,157,560 B2
• Filed: 06/10/2015
• Issued: 12/18/2018
• Est. Priority Date: 01/27/2015
• Status: Active Grant

• Current Assignee: Novatek Microelectronics Corporation (Novatek Microelectronics Corp Limited)
• Original Assignee: Novatek Microelectronics Corporation (Novatek Microelectronics Corp Limited)
• Inventors: Yang, Hsueh-Yen, Yang, Kai-Min, Pai, Feng-Ting
• Primary Examiner(s): MICHAUD, ROBERT J
• Application Number:
  US14/735,158
• Publication Number:
  US 20160217764A1
• Time in Patent Office: 1,287 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 2310/0254 Control of polarity reversal in general, other than for liquid crystal displays
• CPC Class Codes: G09G 2340/0457 Improvement of perceived resolution by subpixel rendering
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607

Abstract

A display panel and a display driver are provided. The display panel includes a plurality of sub-pixel repeating units, which are arranged repeatedly to form a pixel array. Each row of the sub-pixel repeating unit includes an odd number of sub-pixels, where every two sub-pixels are regarded as one pixel unit, and another sub-pixel is added at the last column of the sub-pixel repeating unit. The odd-numbered sub-pixels are respectively written by N groups of pixel data. The amount of these sub-pixels is 2N+1, which is between two to two and a half times of the amount of the pixel data. Each odd-numbered column of the sub-pixel repeating unit includes the sub-pixels of two different colors, which are alternately arranged in each odd-numbered column.

Claims

1. A display panel, comprising:

a plurality of sub-pixel repeating units, arranged repeatedly to form a pixel array, and each row of each of the sub-pixel repeating units comprising;

an odd number of sub-pixels, comprising a plurality of pixel units, where every two sub-pixels are regarded as one of the pixel units and another sub-pixel is added at the last column of each of the sub-pixel repeating units, and the odd number of sub-pixels being respectively written to by N groups of pixel data, that the N groups of pixel data include data to be displayed by being respectively written into the sub-pixels, wherein the amount of the sub-pixels in one row of each of the sub-pixel repeating units is (2N+1), wherein N is the amount of groups of the pixel data and an integer of equal to or more than 2,

wherein each odd-numbered column of each of the sub-pixel repeating units of the pixel array comprises the sub-pixels of two different colors, which are alternately arranged in each odd-numbered column of each of the sub-pixel repeating units of the pixel array,

wherein a group of pixel data in the N groups of pixel data includes image signals of three colors, including red, green and blue colors, and each of the pixel units is constituted by the sub-pixels of two of four colors that are configured to display red, green, blue and white colors.

2. The display panel as recited in claim 1, wherein on the display panel, the sub-pixels of a same color respectively have different polarities.

3. The display panel as recited in claim 1, wherein each of the sub-pixel repeating units comprises the sub-pixels of three different colors, each odd-numbered column of each of the sub-pixel repeating units comprises at least one first color sub-pixel and at least one third color sub-pixel for being staggeredly arranged, and each even-numbered column of each of the sub-pixel repeating units comprises at least one second color sub-pixel so as to form a striped arrangement.

4. The display panel as recited in claim 3, wherein the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are respectively one of a red sub-pixel, a green sub-pixel and a blue sub-pixel.

5. The display panel as recited in claim 1, wherein each of the sub-pixel repeating units comprises the sub-pixels of four different colors, each odd-numbered column of each of the sub-pixel repeating unit comprises at least one first color sub-pixel and at least one third color sub-pixel for being staggeredly arranged, and at least one even-numbered column of each of the sub-pixel repeating units comprises at least one second color sub-pixel and at least one fourth color sub-pixel for being arranged.

6. The display panel as recited in claim 5, wherein a spatial frequency of the second color sub-pixel and the fourth color sub-pixel in the at least one even-numbered column of each of the sub-pixel repeating units is 1:

1.

7. The display panel as recited in claim 5, wherein a spatial frequency of the second color sub-pixel and the fourth color sub-pixel in the at least one even-numbered column of each of the sub-pixel repeating units is 1:

3.

8. The display panel as recited in claim 5, wherein the first color sub-pixel, the second color sub-pixel, the third color sub-pixel and the fourth color sub-pixel are respectively one of a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel.

9. A display driver, configured to drive a display panel, wherein the display panel comprises a plurality of sub-pixel repeating units, and the sub-pixel repeating units are divided into at least two sub-pixel groups, the display driver comprising:

a first driving circuit, configured to drive a first sub-pixel group in the sub-pixel groups; and

a second driving circuit, configured to drive a second sub-pixel group adjacent to a last odd-numbered column of one of the sub-pixel repeating units of the first sub-pixel group in the sub-pixel groups,

wherein each row of each of the sub-pixel repeating units comprises;

an odd number of sub-pixels, comprising a plurality of pixel units, where every two sub-pixels are regarded as one of the pixel units and another sub-pixel is added at the last column of each of the sub-pixel repeating units, and the odd number of sub-pixels being respectively written to by N groups of pixel data, that the N groups of pixel data include data to be displayed by being respectively written into the sub-pixels, wherein the amount of the sub-pixels in one row of each of the sub-pixel repeating units is (2N+1), wherein N is the amount of groups of the pixel data and an integer of equal to or more than 2,

wherein the last odd-numbered column of the sub-pixel repeating unit of the first sub-pixel group comprises a first sub-pixel and a second sub-pixel, and in the first sub-pixel group, a first pixel unit adjacent to the first sub-pixel is written by a first group of pixel data in the N groups of pixel data, the first driving circuit drives the first sub-pixel of the first sub-pixel group according to the first group of pixel data, so as to color mix the first sub-pixel with the first pixel unit, and

in the first sub-pixel group, a second pixel unit adjacent to the second sub-pixel is written by a second group of pixel data in the N groups of pixel data, and the first driving circuit drives the second sub-pixel of the first sub-pixel group according to the second group of pixel data, so as to color mix the first sub-pixel with the second pixel unit,

wherein a group of pixel data in the N groups of pixel data includes image signals of three colors, including red, green and blue colors, and each of the pixel units is constituted by the sub-pixels of two of four colors that are configured to display red, green, blue and white colors.

10. The display driver as recited in claim 9, wherein the sub-pixel repeating units are arranged repeatedly to form a pixel array, the sub-pixel repeating units are divided into the at least two sub-pixel groups along a row direction.

11. The display driver as recited in claim 9, wherein the first sub-pixel and the second sub-pixel are of different colors.

12. The display driver as recited in claim 9, wherein the sub-pixel repeating units comprise a first sub-pixel repeating unit and a second sub-pixel repeating unit, the last odd-numbered column of the first sub-pixel repeating unit is arranged to be adjacent to the second sub-pixel repeating unit, and an arrangement of the sub-pixels in the first sub-pixel repeating unit is the same as that of the sub-pixels in the second sub-pixel repeating unit.

13. The display driver as recited in claim 12, wherein odd-numbered rows and even-numbered rows in the second sub-pixel repeating unit are staggeredly arranged with odd-numbered rows and even-numbered rows in the first sub-pixel repeating unit.

14. The display driver as recited in claim 9, wherein on the display panel, the sub-pixels of a same color respectively have different polarities.

15. The display driver as recited in claim 9, wherein each odd-numbered column of each of the sub-pixel repeating units comprises the sub-pixels of two different colors, which are alternately arranged in each odd-numbered column.

16. The display driver as recited in claim 9, wherein each of the sub-pixel repeating units comprises the sub-pixels of three different colors, each odd-numbered column of each of the sub-pixel repeating units comprises at least one first color sub-pixel and at least one third color sub-pixel for being staggeredly arranged, and each even-numbered column of each of the sub-pixel repeating units comprises at least one second color sub-pixel so as to form a striped arrangement.

17. The display driver as recited in claim 16, wherein the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are respectively one of a red sub-pixel, a green sub-pixel and a blue sub-pixel.

18. The display driver as recited in claim 9, wherein each of the sub-pixel repeating units comprises the sub-pixels of four different colors, each odd-numbered column of each of the sub-pixel repeating unit comprises at least one first color sub-pixel and at least one third color sub-pixel for being staggeredly arranged, and at least one even-numbered column of each of the sub-pixel repeating unit comprises at least one second color sub-pixel and at least one fourth color sub-pixel for being arranged.

19. The display driver as recited in claim 18, wherein a spatial frequency of the second color sub-pixel and the fourth color sub-pixel in the at least one even-numbered column of each of the sub-pixel repeating units is 1:

1.

20. The display driver as recited in claim 18, wherein spatial frequencies of the second color sub-pixel and the fourth color sub-pixel in the at least one even-numbered column of each of the sub-pixel repeating unit is 1:

3.

21. The display driver as recited in claim 18, wherein the first color sub-pixel, the second color sub-pixel, the third color sub-pixel and the fourth color sub-pixel are respectively one of a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel.