Display Device

• US 20080316303A1
• Filed: 06/04/2008
• Published: 12/25/2008
• Est. Priority Date: 06/08/2007
• Status: Abandoned Application

• Current Assignee: RealD Incorporated
• Original Assignee: RealD Incorporated
• Inventors: Lipton, Lenny, Cowan, Matt, Chiu, Joseph, Archer, Rod, Zietlow, Klaus
• Application Number:
  US12/156,683
• Publication Number:
  US 20080316303A1
• Time in Patent Office: Days
• US Class Current: 348/51
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• CPC Class Codes: G09G 2320/0252 Improving the response speed
• 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 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/36 using liquid crystals
• CPC Class Codes: G09G 5/363 Graphics controllers
• CPC Class Codes: G09G 5/399 using two or more bit-mapped memories, the operations of which are switched in time, e.g. ping-pong buffers
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

An enhanced liquid crystal display design is provided having relatively fast response time particularly useful in high speed or highly intense applications, such as stereoscopic or autostereoscopic image display. The liquid crystal display device is configured to display stereoscopic images, and comprises an LCD panel and control electronics configured to drive the LCD panel to a desired stereoscopic display state. The control electronics are configured to employ transient phase switching and overdrive the LCD panel to a desired state to enable relatively rapid display of stereoscopic images.

Claims

1. A liquid crystal display configured to provide stereoscopic images to a viewer, comprising:

an LCD panel;

control electronics configured to control application of electricity to the liquid crystal display to facilitate display of stereoscopic images on the display, the control electronics comprising;

a video processor;

a backlight driver; and

a pi-cell driver; and

a stereoscopic display stack, comprising;

an LCD panel;

a backlight configured to receive information from the backlight driver; and

a pi-cell configured to receive information from the pi-cell driver;

wherein the control electronics are configured to manage the display stack and synchronize the video processor, backlight driver and pi-cell driver to enable display of the stereoscopic image.

2. The liquid crystal display of claim 1, wherein the control electronics employ transient phase switching to drive the LCD panel of the display stack of the liquid crystal display.

3. The liquid crystal display of claim 2, wherein the transient phase switching employs a look up table.

4. The liquid crystal display of claim 1, wherein the backlight driver controls the timing of switching of backlight segments.

5. The liquid crystal display of claim 2, wherein the control electronics overdrive the liquid crystal display by applying excess voltage to the LCD panel to facilitate display of the stereoscopic image.

6. A liquid crystal display device configured to display stereoscopic images, comprising:

an LCD panel;

a backlight positioned behind the LCD panel; and

control electronics configured to drive the LCD panel to a desired display state, wherein the control electronics are configured to employ transient phase switching to overdrive the LCD panel to a desired state and facilitate relatively rapid display of stereoscopic images.

7. The liquid crystal display device of claim 6, further comprising a pi-cell positioned in front of the LCD panel.

8. The liquid crystal display device of claim 6, wherein the control electronics employ a predictive model configured to provide a level of luminance at the LCD panel based on a given desired luminance value.

9. The liquid crystal display device of claim 6, wherein the control electronics employ a ghost compensation technique.

10. The liquid crystal display device of claim 6, wherein the control electronics control switching of pixel values in the LCD display from a right eye image value to a left eye image value and vice versa.

11. The liquid crystal display device of claim 6, wherein the transient phase switching employs a look up table.

12. The liquid crystal display device of claim 6, wherein the control electronics comprise a backlight driver configured to selectively control switching of backlight segments.

13. A liquid crystal display device configured to display stereoscopic images, comprising:

an LCD panel; and

control electronics configured to drive the LCD panel to a desired stereoscopic display state, wherein the control electronics are configured to employ transient phase switching and overdrive the LCD panel to a desired state to enable relatively rapid display of stereoscopic images.

14. The liquid crystal display device of claim 13, further comprising a pi-cell positioned in front of the LCD panel.

15. The liquid crystal display device of claim 13, wherein the control electronics employ a predictive model configured to provide a level of luminance at the LCD panel based on a given desired luminance value.

16. The liquid crystal display device of claim 13, wherein the control electronics employ a ghost compensation technique.

17. The liquid crystal display device of claim 13, wherein the control electronics control switching of pixel values in the LCD display from a right eye image value to a left eye image value and vice versa.

18. The liquid crystal display device of claim 13, wherein the transient phase switching employs a look up table.

19. The liquid crystal display device of claim 13, wherein the control electronics comprise a backlight driver configured to selectively control switching of backlight segments.

20. The liquid crystal display device of claim 13, wherein the control electronics employ a color correction technique.