Liquid crystal panel and display driving method thereof for compensating color cast to improve viewing angles

• US 10,460,693 B2
• Filed: 07/18/2017
• Issued: 10/29/2019
• Est. Priority Date: 06/23/2017
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Chen, Shuai
• Primary Examiner(s): Park, Sanghyuk
• Application Number:
  US15/737,568
• Publication Number:
  US 20190005912A1
• Time in Patent Office: 833 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 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/028 by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
• CPC Class Codes: G09G 3/3677 suitable for active matrices only
• CPC Class Codes: G09G 3/3688 suitable for active matrices only
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers

Abstract

The present disclosure provides a liquid crystal panel, which includes N scan lines, M data lines and N×M pixels arranged in array; when the liquid crystal panel is driven to display, n scan lines that are adjacent to each other receive high potential signals simultaneously, and M data lines receive data signals simultaneously in a duration of the high potential signal; and n scan lines receive low potential signals simultaneously in a duration of a first low potential signal, n scan lines receive low potential signals having the lowest voltage simultaneously in a duration of a second low potential signal, and M data lines receive common voltage signals simultaneously in the duration of the first low potential signal and the duration of the second low potential signal; and 2≤n≤N.

Claims

1. A liquid crystal panel comprising N scan lines, M data lines and N×

M pixels arranged in an array, N and M being both positive integers;

the scan lines extending in a row direction, the data lines extending in a column direction, the scan lines and the data lines crossing each other and insulating from each other, the pixels each being disposed at a cross of corresponding one of the scan lines and corresponding one of the data lines and being connected to the corresponding one of the scan lines and the corresponding one the data lines, respectively,

wherein when the liquid crystal panel is driven to display, n scan lines that are adjacent to each other receive high potential signals simultaneously, and the M data lines receive data signals simultaneously in a duration of the high potential signals; and

the n scan lines receive low potential signals simultaneously in a duration of first low potential signals after the duration of the high potential signals, and receive low potential signals having a lowest voltage simultaneously in a duration of second low potential signals after the duration of the first low potential signals, and the M data lines receive common voltage signals simultaneously in the duration of the first low potential signals and the duration of the second low potential signals,

wherein a potential signal of each of the n scan lines is maintained substantially constant during the duration of the high potential signals, the duration of the first low potential signals, and the duration of the second low potential signals, and

wherein 2≤

n≤

N, and n is a positive integer.

2. The liquid crystal panel of claim 1, wherein at least one of the n scan lines receives the low potential signals having the lowest voltage in the duration of the first low potential signals, and voltages of the low potential signals received by the rest of the n scan lines are all greater than the lowest voltage.

3. The liquid crystal panel of claim 2, wherein the scan lines which receive low potential signals having the lowest voltage are not adjacent to each other.

4. The liquid crystal panel of claim 3, wherein voltages of the low potential signals received by the rest of the n scan lines are different from one another.

5. The liquid crystal panel of claim 2, wherein voltages of the low potential signals received by the rest of the n scan lines are different from one another.

6. The liquid crystal panel of claim 1, wherein N is an integer multiple of n.

7. A display driving method of a liquid crystal panel comprising N scan lines, M data lines and N×

M pixels arranged in an array, and N and M being both positive integers, the display driving method comprising;

supplying high potential signals for n scan lines that are adjacent to each other simultaneously, and supplying data signals for M data lines simultaneously in a duration of the high potential signals;

wherein 2≤

n≤

N, and n is a positive integer;

supplying low potential signals for the n scan lines simultaneously in a duration of first low potential signals after the duration of the high potential signals, and supplying common voltage signals for the M data lines simultaneously in the duration of the first low potential signals; and

supplying low potential signals having the lowest voltage for the n scan lines simultaneously in a duration of second low potential signals after the duration of the first low potential signals, and supplying common voltage signals for M data lines simultaneously in the duration of the second low potential signals,

wherein a potential signal of each of the n scan lines is maintained substantially constant during the duration of the high potential signals, the duration of the first low potential signals, and the duration of the second low potential signals.

8. The display driving method of the liquid crystal panel of claim 7, wherein at least one of the n scan lines receives a low potential signal having the lowest voltage in the duration of the first low potential signals, and voltages of the low potential signals received by the rest of the n scan lines are all greater than the lowest voltage.

9. The display driving method of the liquid crystal panel of claim 8, wherein voltages of the low potential signals received by the rest of the n scan lines are different from one another.

10. The display driving method of the liquid crystal panel of claim 7, wherein the scan lines which receive low potential signals having the lowest voltages are not adjacent to each other.

11. The display driving method of the liquid crystal panel of claim 10, wherein voltages of the low potential signals received by the rest of the n scan lines are different from one another.

12. The display driving method of liquid crystal panel of claim 7, wherein N is an integer multiple of n.