DISPLAY APPARATUS AND CONTROL METHOD THEREOF

• US 20080246713A1
• Filed: 10/31/2007
• Published: 10/09/2008
• Est. Priority Date: 04/04/2007
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Hee-Seop, LEE, Jun-Woo
• Application Number:
  US11/933,380
• Publication Number:
  US 20080246713A1
• Time in Patent Office: Days
• US Class Current: 345/89
• CPC Class Codes: G09G 2310/061 for resetting or blanking
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A display apparatus includes a display panel that includes a plurality of pixels and a panel driver. The panel driver receives original image signals corresponding to successive frames which are displayed in a predetermined number within a predetermined period of time, forms an interpolation image signal on the basis of original image signals corresponding to two successive frames, and forms a non-image signal, and applies the original image signal, the interpolation image signal, and the non-image signal to the respective pixels during a display period.

Claims

1. A display apparatus, comprising:

a display panel comprising a plurality of pixels; and

a panel driver to receive original image signals corresponding to successive frames, to form an interpolation image signal on the basis of the original image signals corresponding to two successive frames, and to form a non-image signal,

wherein the panel driver applies the original image signal, the interpolation image signal, and the non-image signal to the pixels during a display period of one frame.

2. The display apparatus of claim 1, wherein the pixels comprise:

a gate line;

a data line crossing the gate line; and

a thin film transistor disposed at a crossing area of the gate line and the data line;

the panel driver comprising;

a signal controller to determine a proportion of the original image signal, the interpolation image signal, and the non-image signal to be applied to the pixels during the display period;

a data driver to apply a data voltage selected on the basis of the original image signal, the interpolation image signal, and the non-image signal to the pixels; and

a gate driver to apply a gate signal to the gate lines so that the data voltage is applied to the pixels according to the proportion determined by the signal controller.

3. The display apparatus of claim 2, wherein one of the original image signal and the interpolation image signal is displayed as a first sub-frame of the one frame on the display panel, and the other of the original image signal and the interpolation image signal and the non-image signal are displayed as a second sub-frame of the one frame on the display panel during the display period.

4. The display apparatus of claim 3, wherein the pixels are disposed in a matrix, the gate driver simultaneously applies a gate signal to a first pixel row and a second pixel row, which are spaced apart from each other, during the second sub-frame, and the signal controller outputs a gate enable signal to the gate driver, the gate enable signal to activate the gate signal to apply one of the original image signal and the non-image signal to the first pixel row and to apply the other thereof to the second pixel row.

5. The display apparatus of claim 3, wherein the first sub-frame and the second sub-frame are formed on the display panel for the same amount of time.

6. The display apparatus of claim 3, wherein the first sub-frame is formed on the display panel for a shorter period of time than the second sub-frame.

7. The display apparatus of claim 2, wherein the pixels are disposed in a matrix, the gate driver simultaneously applies a gate signal to a first pixel row, a second pixel row, and a third pixel row, which are spaced apart from each other, during the one frame, and the signal controller outputs a gate enable signal to the gate driver so that the gate signals applied to the first pixel row, the second pixel row, and the third pixel row are not activated at the same time.

8. The display apparatus of claim 7, wherein one of the original image signal, the interpolation image signal, and the non-image signal is applied to the first pixel row, another thereof is applied to the second pixel row, and the other thereof is applied to the third pixel row.

9. The display apparatus of claim 2, wherein neighboring pixels in a column direction are applied with a data voltage with the same polarity.

10. The display apparatus of claim 2, wherein the gate driver applies gate signals to neighboring pixels in a column direction, the gate signals overlapping with each other.

11. The display apparatus of claim 1, wherein the non-image signal comprises a black signal or a gray signal.

12. The display apparatus of claim 1, wherein the display period is 1/60 of a second.

13. The display apparatus of claim 1, wherein the display panel further comprises:

a first substrate;

a second substrate; and

a liquid crystal layer interposed between the first substrate and the second substrate,

wherein the liquid crystal layer comprises liquid crystal molecules aligned in an optically compensated birefringency mode.

14. A control method of a display apparatus that comprises a display panel having a plurality of pixels, the control method comprising:

receiving original image signals corresponding to successive frames;

forming an interpolation image signal on the basis of the original signals corresponding to two successive frames;

forming a non-image signal; and

displaying an image signal where the original image signal, the interpolation image signal, and the non-image signal are applied to the pixels during a display period of one frame.

15. The control method of claim 14, wherein displaying the image signal comprises forming a first sub-frame of the one frame, the first sub-frame being displayed with one of the original image signal and the interpolation image signal, and forming a second sub-frame of the one frame, the second sub-frame being displayed with the other thereof and the non-image signal.

16. The control method of claim 15, wherein the pixels comprise a gate line, a data line, and a thin film transistor disposed at a crossing area of the gate line and the data line, and the display apparatus further comprises a gate driver to apply a gate signal to the gate lines, and

forming the second sub-frame comprises simultaneously applying a gate signal to a first pixel row and a second pixel row, which are spaced apart from each other, and applying one of the original image signal and the non-image signal to the first pixel row and the other thereof to the second pixel row.

17. The control method of claim 14, wherein the pixels comprise a gate line, a data line, and a thin film transistor disposed at a crossing area of the gate line and the data line, and the display apparatus further comprises a gate driver to apply a gate signal to the gate lines, and displaying the image signal comprises:

simultaneously applying a gate signal to a first pixel row, a second pixel row, and a third pixel row, which are spaced apart from each other; and

applying one of the original image signal, the interpolation image signal, and the non-image signal to the first pixel row, another thereof to the second pixel row, and the other thereof to the third pixel row.

18. The control method of claim 14, wherein the display apparatus further comprises a data driver to apply a data voltage selected on the basis of the original image signal, the interpolation image signal, and the non-image signal to the pixels, and displaying the image signal comprises applying a data voltage with the same polarity to neighboring pixels in a column direction.

19. The control method of claim 16, wherein displaying the image signal comprises applying overlapping gate signals to neighboring pixels in a column direction.

20. The control method of claim 14, wherein the non-image signal comprises a black signal or a gray signal.

21. The control method of claim 14, wherein the display period is 1/60 of a second.