Display apparatus and method for driving display panel thereof

• US 8,508,451 B2
• Filed: 01/22/2008
• Issued: 08/13/2013
• Est. Priority Date: 10/31/2007
• Status: Active Grant

• Current Assignee: HannStar Display Corporation
• Original Assignee: HannStar Display Corporation
• Inventors: Pan, Hsuan-Lin, Cheng, Chien-Yung
• Primary Examiner(s): Nguyen, Chanh
• Assistant Examiner(s): Park, Sanghyuk
• Application Number:
  US12/017,345
• Publication Number:
  US 20090109132A1
• Time in Patent Office: 2,030 Days
• Field of Search: 345 87-104
• US Class Current: 345/94
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A display apparatus and a method for driving a display panel thereof are provided. The display panel includes an inducing signal readout line and N gate lines, in which N is a natural number. The inducing signal readout line is coupled to a plurality of inducing circuits. Each inducing circuit is coupled to one of the gate lines, and the N^th gate line is coupled to one of the inducing circuits. In the method, several gate pulses are provided to drive the gate lines sequentially to turn on the corresponding inducing circuits, wherein at least a portion of the driving duration of a gate pulse provided to the N^th gate line is in a blanking time between two frames.

Claims

1. A method for driving a display panel, wherein the display panel comprises an inducing signal readout line and N gate lines, N is a natural number, the inducing signal readout line is coupled to a plurality of inducing circuits, each inducing circuit is coupled to one of the gate lines, and the N^th gate line is coupled to one of the inducing circuits, comprising:

providing several gate pulses to drive the gate lines sequentially to turn on the corresponding inducing circuits; and

wherein at least a portion of driving duration of a gate pulse only provided to the N^th gate line is in a blanking time between two frames and fully overlaps the entire blanking time, so as to make a level of an inducing signal on the inducing signal readout line remain at a stable level during the entire blanking time,

wherein only a single pulse among all the gate lines is applied during the entire blanking time,

wherein a pulse stop time of the gate pulse only provided to the N^th gate line is an ending of the blanking time between the two frames.

2. The method for driving a display panel as claimed in claim 1, wherein the gate pulse provided to the N^th gate line is fully within the blanking time between the two frames.

3. The method for driving a display panel as claimed in claim 1, wherein each frame is driven from a 1^st gate line, and the N^th gate line is a last gate line that is driven.

4. The method for driving a display panel thereof as claimed in claim 1, wherein each frame is driven from the N^th gate line, and the 1^st gate line is the last gate line that is driven.

5. The method for driving a display panel as claimed in claim 1, wherein the display panel is an embedded input panel.

6. The method for driving a display panel as claimed in claim 5, wherein the inducing circuits comprise charge inducing circuits or current inducing circuits.

7. The method for driving a display panel as claimed in claim 1, further comprising making the driving duration of the gate pulse provided to the N^th gate line extend to the driving duration of an adjacent frame.

8. A display apparatus, comprising:

a display panel, comprising;

N gate lines, wherein N is a natural number;

an inducing signal readout line; and

a plurality of inducing circuits, wherein each inducing circuit is coupled to the inducing signal readout line and is coupled to one of the gate lines, and an N^th gate line is coupled to one of the inducing circuits; and

a gate driver, for providing several gate pulses to drive the gate lines sequentially to turn on the corresponding inducing circuits, and wherein at least a portion of driving duration of a first gate pulse only provided to the N^th gate line is in a blanking time between two frames and fully overlaps the entire blanking time, so as to make a level of an inducing signal on the inducing signal readout line remain at a stable level during the entire blanking time,

wherein only a single pulse among all the gate lines is applied during the entire blanking time,

wherein a pulse stop time of the gate pulse only provided to the N^th gate line is an ending of the blanking time between the two frames.

9. The display apparatus as claimed in claim 8, wherein the first gate pulse provided to the N^th gate line is fully within the blanking time between the two frames.

10. The display apparatus as claimed in claim 8, further comprising providing a second gate pulse to the N^th gate line before the first gate pulse is provided.

11. The display apparatus as claimed in claim 8, wherein each frame is driven from a 1^st gate line, and the N^th gate line is a last gate line that is driven.

12. The display apparatus as claimed in claim 8, wherein each frame is driven from the Nth gate line, and the 1^st gate line is the last gate line that is driven.

13. The display apparatus as claimed in claim 8, wherein the display panel is an embedded input panel.

14. The display apparatus as claimed in claim 13, wherein the inducing circuits comprise charge inducing circuits or current inducing circuits.

15. The display apparatus as claimed in claim 8, further comprising making the driving duration of the first gate pulse provided to the N^th gate line extend to the driving duration of an adjacent frame.