Driving method for liquid crystal display panel

• US 20060267910A1
• Filed: 08/29/2005
• Published: 11/30/2006
• Est. Priority Date: 05/30/2005
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: Prime View International Company Limited (E Ink Holdings Incorporated)
• Inventors: Kim, Sung-Kon, Lin, Tung-Liang, Shih, Chien-Chia
• Granted Patent: US 7,518,591 B2
• Time in Patent Office: Days
• US Class Current: 345/100
• CPC Class Codes: G09G 2310/021 Double addressing, i.e. scanning two or more lines, e.g. lines 2 and 3; 4 and 5, at a time in a first field, followed by scanning two or more lines in another combination, e.g. lines 1 and 2; 3 and 4, in a second field
• CPC Class Codes: G09G 2310/0224 Details of interlacing
• CPC Class Codes: G09G 2340/04 Changes in size, position or resolution of an image
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A driving method for a liquid crystal display (LCD) panel for displaying a frame having a first field and a second field on the LCD panel is provided. The driving method includes transmitting horizontal scan lines of the frame to the LCD panel using a line pair method and displaying the frame on the LCD panel using a column inversion method. Therefore, the driving method of the present invention can increase the resolution of the displayed frame without the need to provide additional memories or deploying complex algorithms.

Claims

1. A driving method for a liquid crystal display (LCD) panel for displaying a frame having a first field and a second field on the LCD panel such that each of the first field and the second field includes L horizontal scan lines, wherein the LCD panel includes M scan lines and N data lines, the driving method comprising:

sequentially receiving the horizontal scan lines of the first field and transmitting the horizontal scan lines of the first field to the LCD panel for displaying the first field;

wherein P of the horizontal scan lines of the first field are transmitted to two consecutive scan lines of the LCD panel respectively, and Q of the horizontal scan lines are transmitted to one scan line of the LCD panel respectively; and

furthermore, the order of any two of the horizontal scan lines transmitted to the LCD panel is identical to the order of any two of the horizontal scan lines of the first field; and

moreover, the signal polarity of odd-numbered data lines of the data lines and the signal polarity of even-numbered data lines of the data lines of the LCD panel are a first polarity and a second polarity respectively; and

sequentially receiving the horizontal scan lines of the second field and transmitting the horizontal scan lines of the second field to the LCD panel for displaying the second field;

wherein R of the horizontal scan lines of the second field are transmitted to two consecutive scan lines of the LCD panel respectively, and S of the horizontal scan lines are transmitted to one scan line of the LCD panel respectively; and

furthermore, the order of any two of the horizontal scan lines transmitted to the LCD panel is identical to the order of any two of the horizontal scan lines of the second field; and

moreover, the signal polarity of the odd-numbered data lines of the data lines and the signal polarity of the even-numbered data lines of the data lines of the LCD panel are the second polarity and the first polarity respectively;

wherein the first polarity and the second polarity are opposite polarity;

L, M, N, P and R are natural numbers;

Q and S are non-negative integers;

P+Q≦

L; and

R+S≦

L.

2. The driving method for the LCD panel of claim 1, wherein P+Q=L, and R+S=L.

3. The driving method for the LCD panel of claim 2, wherein P=M−

L, and Q=2L−

M.

4. The driving method for the LCD panel of claim 2, wherein Q≠

0 and S≠

0;

the h^th horizontal scan line of the first field is transmitted to the g^th scan line of the LCD panel; and

one of the (h−

1)^th, the h^th and the (h+1)^th horizontal scan lines of the second field is transmitted to the g^th scan line of the LCD panel;

wherein h and g are natural numbers, h≦

L and g≦

M.

5. The driving method for the LCD panel of claim 1, wherein the first polarity has a positive value and the second polarity has a negative value.

6. The driving method for the LCD panel of claim 1, wherein the first polarity has a negative value and the second polarity has a positive value.

7. The driving method for the LCD panel of claim 1, wherein P+Q<

L, and R+S<

L.

8. The driving method for the LCD panel of claim 7, wherein Q≠

0 and S≠

0;

the h^th horizontal scan line of the first field is transmitted to the g^th scan line of the LCD panel; and

one of the (h−

2)^th, the (h−

1)^th and the h^th horizontal scan lines of the second field is transmitted to the g^th scan line of the LCD panel;

wherein h and g are natural numbers, h≦

L and g≦

M.