Time sharing type autostereoscopic display apparatus and method for driving the same

• US 8,711,060 B2
• Filed: 03/21/2007
• Issued: 04/29/2014
• Est. Priority Date: 04/03/2006
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jung, Sung-yong, Shestak, Sergey, Kim, Dae-sik
• Primary Examiner(s): Zhou, Hong
• Application Number:
  US11/689,227
• Publication Number:
  US 20070229951A1
• Time in Patent Office: 2,596 Days
• Field of Search: 345/419, 345/32, 345 6- 9, 345 87-100, 348 51- 58, 348/42, 359462-477
• US Class Current: 345/6
• CPC Class Codes: G02B 30/24 involving temporal multiplexing, e.g. using sequentially activated left and right shutters
• CPC Class Codes: G02B 30/25 using polarisation techniques

Abstract

A time sharing type autostereoscopic display apparatus and a method for driving the same are provided. The display apparatus includes a display panel; a polarization switch; and a control unit which controls the polarization switch so that each of N segments of the polarization switch is driven in synchronization with an image scanning time of the display panel corresponding to each segment, and controls the polarization switch so that a time when a driving signal is applied to an initial segment is delayed relative to a time when an image starts to be scanned after a vertical synchronization signal is applied to the display panel. The method includes controlling the display apparatus so that a time when a driving signal is applied to an initial segment delayed relative to a time when an image starts to be scanned.

Claims

1. A time sharing type autostereoscopic image display apparatus comprising:

a display panel;

a polarization switch which is disposed on a front surface of the display panel and is divided into N segments to be independently driven to change a polarization direction of an incident light; and

a control unit which controls the polarization switch so that each of the N segments is driven in synchronization with an image scanning time of the display panel corresponding to each segment,

wherein the control unit controls the polarization switch so that a time when a driving signal is applied to an initial segment of the N segments of the polarization switch is delayed relative to a time when an image starts to be scanned after a vertical synchronization signal is applied to the display panel.

2. The apparatus of claim 1, wherein a relationship D=0.8*S ms is satisfied, where D denotes the delay time of the driving signal applied to the initial segment and S denotes a driving time interval between two adjacent segments of the N segments.

3. The apparatus of claim 2, wherein a relationship S=(T−

B)/N is satisfied, where T denotes a period of one frame of the display panel, and B denotes a blank time until an image starts being scanned after a vertical synchronization signal is applied to the display panel.

4. The apparatus of claim 3, wherein the control unit comprises a delay unit which adjusts a switching time of the polarization switch by 0 through T.

5. The apparatus of claim 1, wherein the display panel is a liquid crystal display (LCD).

6. The apparatus of claim 1, wherein the display panel is a plasma display panel (PDP), an organic light-emitting device (OLED), or a field emission device (FED), and a linear polarization plate is disposed between the display panel and the polarization switch.

7. The apparatus of claim 1, wherein the time sharing type autostereoscopic image display apparatus is a polarization glasses type.

8. A method for driving a time sharing type autostereoscopic image display apparatus, the method comprising:

controlling the time sharing type autostereoscopic image display apparatus so that a time when a driving signal is applied to an initial segment of a polarization switch is delayed relative to a time when an image starts to be scanned after a vertical synchronization signal is applied to a display panel of the time sharing type autostereoscopic image display apparatus.

9. The method of claim 8, wherein a relationship D=0.8*S ms is satisfied, where D denotes the delay time of the driving signal applied to the initial segment and S denotes a driving time interval between two adjacent segments of the polarization switch.

10. The method of claim 9, wherein a relationship S=(T−

B)/N is satisfied, where T denotes a period of one frame, and B denotes a blank time until an image starts being scanned after a vertical synchronization signal is applied to the display panel.

11. The method of claim 8, wherein the display panel is a liquid crystal display (LCD).