Stereoscopic display device and driving method thereof

• US 20070091058A1
• Filed: 10/13/2006
• Published: 04/26/2007
• Est. Priority Date: 10/20/2005
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Jang, Hyoung-Wook, Nam, Hui, Kim, Beom-Shik, Lee, Jang-Doo, Song, Myoung-Seop
• Granted Patent: US 8,044,881 B2
• Time in Patent Office: Days
• US Class Current: 345/102
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/31 involving active parallax barriers involving directional light or back-light sources G02B30/33
• CPC Class Codes: G09G 2310/0237 Switching ON and OFF the backlight within one frame
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: H04N 13/158 Switching image signals
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/354 for displaying sequentially
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

A system and method for driving a stereoscopic image display device includes, during a first period wherein no image is displayed, writing a first data signal corresponding to a first image on a first display cell and writing a second data signal corresponding to a second image on the second display cell. During a second period, the first image and the second image are displayed by driving the barrier to become a first format. During a third period in which no image is displayed, the second data signal is written on the first display cell and the first data signal is written on the second display cell. During a fourth period, the first and second images are displayed by driving the barrier to become a second format. The barrier intercepts and transmits light at different angles in the first format than in the second format.

Claims

1. A method for driving a stereoscopic image display device including a display panel having a first display cell and a second display cell and concurrently displaying a first image at a first recognizable viewing angle and a second image at a second recognizable viewing angle different from the first recognizable viewing angle, and a barrier arranged in a location corresponding to the display panel for intercepting or transmitting light, the method comprising:

during a first period wherein no image is displayed, writing a first data signal corresponding to the first image on the first display cell and writing a second data signal corresponding to the second image on the second display cell;

during a second period, displaying the first image and the second image by driving the barrier to become a first format to transmit light;

during a third period in which no image is displayed, writing the second data signal on the first display cell and writing the first data signal on the second display cell; and

during a fourth period, displaying the first and second images by driving the barrier to become a second format to transmit light,

wherein the barrier intercepts and transmits light at different angles in the first format than in the second format.

2. The driving method of claim 1, wherein the second period is longer than twice the first period and the fourth period is longer than twice the third period.

3. The driving method of claim 1, wherein the barrier ha s opaque and transparent regions in the first format that are disposed inversely to respective opaque and transparent regions of the barrier in the second format.

4. The driving method of claim 1, wherein the barrier is driven to intercept light during the first period and the third period so that no image is displayed.

5. The driving method of claim 1, wherein the display panel includes a backlight for supplying light and a non-emissive element for displaying an image using the light of the backlight, and the backlight emits light during the second period and the fourth period.

6. The driving method of claim 5, wherein the barrier is driven to be in the first format during the first period, and in the second format during the third period.

7. A stereoscopic image display device comprising:

a display panel including display cells, the display cells adapted to receive data signals and to display images corresponding to the data signals;

a display panel driver adapted to write the respective data signals on the respective display cells of the display panel;

a barrier arranged in a location corresponding to the display panel and including a first barrier cell and a second barrier cell; and

a barrier driver adapted to drive the barrier such that the first barrier cell and the second barrier cell become transparent or opaque, wherein the barrier driver is adapted to drive the barrier such that the first barrier cell and the second barrier cell are opaque while the data signals are written on the display cells.

8. The stereoscopic image display device of claim 7, wherein:

the display cells include a first display cell and a second display cell;

the data signals include a first image data signal and a second image data signal; and

the display panel driver is adapted to write the first image data signal on the first display cell and the second image data signal on the second display cell during a first period, and to write the first image data signal on the second display cell and the second image data signal on the first display cell during a second period.

9. The stereoscopic image display device of claim 8, wherein the barrier driver is adapted to drive the barrier such that the first barrier cell becomes opaque and the second barrier cell becomes transparent during a third period consecutive to the first period;

an d the first barrier cell becomes transparent and the second barrier cell becomes opaque during a fourth period consecutive to the second period.

10. The stereoscopic image display device of claim 9, wherein the first period is shorter than one-half of the third period and the second period is shorter than one-half of the fourth period.

11. A stereoscopic image display device comprising:

a display panel including display cells, the display cells adapted to receive data signals and to display images corresponding to the data signals, the display cells having non-emissive elements;

a liquid crystal display panel driver adapted to apply the data signals to the respective display cells of the display panel;

a backlight for supplying light to the display panel;

a backlight driver adapted to drive the backlight such that the backlight is turned off while the data signals are written on the display cells;

a barrier arranged in a location corresponding to the display panel and including first and second barrier cells; and

a barrier driver for driving the barrier such that the first and second barrier cells become transparent or opaque.

12. The stereoscopic image display device of claim 11, wherein:

the display panel comprises first and second display cells;

the image data signals comprise first and second image data signals;

the display panel driver is adapted to write the first and second image data signals on the respective first and second display cells during a first period, and to write the first and second image data signals on the respective second and first display cells during a second period; and

the backlight driver is adapted to drive the backlight such that the backlight is turned on during a third period consecutive to the first period, and during a fourth period consecutive to the second period.

13. The stereoscopic image display device of claim 12, wherein the barrier driver is adapted to drive the barrier such that:

the first and second barrier cells become respectively opaque and transparent during the first period and the third period, and the first and second barrier cells become respectively transparent and opaque during the second period and the fourth period.

14. The stereoscopic image display device of claim 13, wherein the first period is shorter than one-half of the third period and the second period is shorter than one-half of the fourth period.

15. A method for driving a stereoscopic image display device including a display panel having first and second display cells and concurrently displaying first and second images having different recognizable viewing angles, and a barrier arranged in a location corresponding to the display panel for intercepting and transmitting light, the method comprising:

writing a first data signal corresponding to the first image on the first display cell;

writing a second data signal corresponding to the second image on the second display cell; and

driving the barrier to become a first format, wherein the writing the first data signal, the writing the second data signal, and the driving the barrier are concurrently performed during a first period.

16. The driving method of claim 15, further comprising:

writing the second data signal on the first display cell;

writing the first data signal on the second display cell; and

driving the barrier to become a second format that is different from the first format, wherein the writing the second data signal on the first display cell, the writing the first data signal on the second display cell, and the driving the barrier in the second format are concurrently performed during a second period.

17. The driving method of claim 15, wherein the first period is a driving delay time of the barrier.

18. The driving method of claim 15, wherein the second period is a driving delay time of the barrier.