Stereoscopic image display device and driving method thereof

Patent metadata

Field	Value
Publication number	US-2015145896-A1
Application number	US-201414332885-A
Country	US
Kind code	A1
Filing date	Jul 16, 2014
Priority date	Nov 26, 2013
Publication date	May 28, 2015
Grant date	—

Abstract

A stereoscopic image display device includes an image compensator, a signal controller, a data driver, and a display panel. The image compensator is configured to convert input image data to revised image data. The revised image data is obtained by compensating for temperature variations of the display panel. The signal controller is configured to output the revised image data. The data driver is configured to receive the revised image data. The display panel includes a plurality of pixels configured to display a left eye image and a right eye image in response to receiving a data voltage from the data driver. The image compensator includes a temperature compensation lookup table selector having a temperature compensation lookup table, and a standard lookup table selector having a standard lookup table and configured to select the revised image data according to correction values selected from the temperature compensation lookup table.

First claim

What is claimed is:

1 . A stereoscopic image display device, comprising:
an image compensator configured to convert input image data to revised image data, wherein the revised image data is obtained by compensating for temperature variations of a display panel of the stereoscopic image display device; a signal controller configured to output the revised image data; a data driver configured to receive the revised image data; and the display panel comprising a plurality of pixels configured to display a left eye image and a right eye image in response to receiving a data voltage from the data driver, wherein the image compensator comprises a temperature compensation lookup table selector having a temperature compensation lookup table, and a standard lookup table selector having a standard lookup table and configured to select the revised image data according to correction values selected from the temperature compensation lookup table.

2 . The display device of claim 1 , wherein a left eye image, a black image, a right eye image, and the black image are alternately applied to the display panel in this order when a stereoscopic image is displayed on the display panel at quadruple a basic frequency.

3 . The display device of claim 1 , wherein a left eye image and a right eye image are alternately applied to the display panel when a stereoscopic image is displayed on the display panel at double a basic frequency.

4 . The display device of claim 1 , wherein a left eye image, the left eye image, a right eye image, and the right eye image are alternately applied to the display panel in this order when a stereoscopic image is displayed on the display panel at quadruple a basic frequency.

5 . The display device of claim 1 , wherein the temperature compensation lookup table includes a temperature, a target luminance value, and data indicating an input luminance value corresponding to the target luminance value according to the temperature.

6 . The display device of claim 1 , wherein the temperature compensation lookup table selector is configured to select a low correction value from the temperature compensation lookup table when a current temperature is higher than a standard temperature, and select a high correction value from the temperature compensation lookup table when the current temperature is lower than the standard temperature.

7 . The display device of claim 1 , wherein the image compensator comprises:
a temperature sensor configured to detect a current temperature of the display panel; and a temperature compensator configured to compensate for the temperature variations using the revised image data.

8 . The display device of claim 7 , wherein the image compensator comprises a driving voltage applying unit configured to apply a pixel voltage to each of the plurality of pixels corresponding to an adjusted luminance determined by the temperature compensator.

9 . The display panel of claim 1 , wherein the standard lookup table includes existing frame correction values, current frame correction values, and data regarding the revised image data.

10 . The display panel of claim 1 , further comprising:
glasses comprising a left eye lens and a right lens controlled by a synchronization signal generated by the signal controller.

11 . A driving method of a stereoscopic image display device, comprising:
alternately inputting a left eye image and a right eye image to the stereoscopic image display device as input image data; detecting a current temperature of a display panel of the stereoscopic image display device; and compensating the input image data according to temperature variations of the display panel using correction values corresponding to the current temperature, wherein compensating the input image data comprises selecting the correction values from a temperature compensation lookup table based on the current temperature of the display panel, and selecting revised image data from a standard lookup table using the correction values.

12 . The method of claim 11 , wherein input image data of a right eye image of a previous frame preceding input image data of a left eye image is used when compensating the input image data of the left eye image, and
input image data of a left eye image of a previous frame preceding input image data of a right eye image is used when compensating the input image data of the right eye image.

13 . The method of claim 11 , further comprising:
providing the revised image data to a data driver of the stereoscopic image display device.

14 . The method of claim 11 , wherein the temperature compensation lookup table comprises a temperature, a target luminance value, and data indicating an input luminance value corresponding to the target luminance value according to the temperature.

15 . The method of claim 11 , wherein compensating the input image data comprises:
selecting a low correction value when the current temperature is higher than a standard temperature; and selecting a high correction value when the current temperature is lower than the standard temperature.

16 . The method of claim 11 , further comprising:
applying a pixel voltage to each of a plurality of pixels of the display panel, wherein the pixel voltage corresponds to the revised image data.

17 . The method of claim 11 , wherein the standard lookup table includes existing correction values, current correction values, and data regarding the revised image data.

18 . A recording media readable by a computer and comprising a program embodying instructions to execute the driving method of claim 11 .

19 . A stereoscopic image display device, comprising:
a display panel comprising a plurality of pixels configured to display a left eye image and a right eye image; a temperature sensor configured to detect a current temperature of the display panel; and an image compensator configured to compensate input image data according to temperature variations of the display panel by selecting correction values corresponding to the current temperature from a temperature compensation lookup table, and selecting revised image data from a standard lookup table using the selected correction values.

20 . The stereoscopic image display device of claim 19 , further comprising:
glasses comprising a left eye lens and a right lens controlled by a synchronization signal generated by a signal controller of the stereoscopic image display device.

Assignees

• Samsung Display Co Ltd
• Univ Sungkyunkwan Res & Bus

Inventors

• Kim Hoon
• Song Jang-Kun
• Kim Hee Seop
• Shin Ki Chul

Classifications

• G09G2320/041

  Temperature compensation · CPC title

• G09G3/003

  to produce spatial visual effects · CPC title

• G09G2340/0435

  Change or adaptation of the frame rate of the video stream · CPC title

• H04N13/341

  using temporal multiplexing · CPC title

• H04N13/398 Primary

  Synchronisation thereof; Control thereof · CPC title