3-DIMENSIONAL DISPLAY DEVICE AND DATA PROCESSING METHOD THEREOF

• US 20120274628A1
• Filed: 10/18/2011
• Published: 11/01/2012
• Est. Priority Date: 04/29/2011
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LIM, KyoungHo, KIM, Joo-Young, PARK, Mun-San, KIM, Jung-taek, PARK, CheolWoo, LEE, KyoungWon
• Granted Patent: US 8,970,617 B2
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G02B 30/25 using polarisation techniques
• CPC Class Codes: G06T 15/00 3D [Three Dimensional] image rendering
• CPC Class Codes: H04N 13/00 Stereoscopic video systems; Multi-view video systems; Details thereof
• CPC Class Codes: H04N 13/161 Encoding, multiplexing or demultiplexing different image signal components for multi-view video sequence encoding H04N19/597
• CPC Class Codes: H04N 13/356 having separate monoscopic and stereoscopic modes
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

Provided is a display device. The display device includes a timing controller, a data driving unit, a gate driving unit, and a display panel. The timing controller divides m-bit image data (m is a natural number) received from the outside into n different image data for each viewpoint (n is 2 or larger natural number), and generates an output frame composed of a plurality of 3-dimensional image data including the n image data for each viewpoint. Then, the output frame is dithered so that the image data for each viewpoint expresses m-bit gradation with 1 bit, and image data for each viewpoint included in the output frame are outputted as output image signals.

Claims

1. A display device, comprising:

a frame generating unit configured to receive an input frame comprising m-bit image data, wherein m is a natural number, to divide the image data into n different image data for each viewpoint, wherein n is a natural number greater than or equal to 2, and to generate an output frame comprising a plurality of 3-dimensional image data comprising the n different image data for each viewpoint;

a gradation converting unit configured to perform a dithering operation to the output frame using a dither matrix comprising a plurality of (m-1)-bit critical values which are divided into k groups, wherein k is a natural number greater than or equal to 4 or larger natural number, and the division is performed by one-to-one correspondence with k numbers of the 3-dimensional image data so that each of the image data for each viewpoint expresses m-bit gradation with 1 bits, and to output the dithered image data for each viewpoint as output image signals;

a data driving unit configured to generate a data driving voltage signal based on the output image signals received from the gradation converting unit; and

a display panel configured to display an image in response to receiving the data driving voltage signal from the data driving unit.

2. The display device of claim 1, wherein the gradation converting unit comprises a medium data generating unit configured to select upper 1 bits among m bits of each of the image data for each viewpoint included in the output frame, and to convert the selected bits into a medium image data,

a comparing unit configured to divide the output frame into a plurality of regions, to compare a value expressed by lower (m-1) bits of each of image data for each viewpoint included in each region with a critical value corresponding thereto, and to output a result of the comparison as a flag;

and

a compensating unit configured to compensate the medium image data in response to the flag, and to output the compensated medium image data as the output image signals.

3. The display device of claim 1, wherein the dither matrix comprises a j×

k matrix, wherein the j and k are both natural numbers greater than or equal to 2.

4. The display device of claim 1, wherein the critical values included in each group are the same.

5. The display device of claim 1, wherein the 3-dimensional image data comprise first image data for a right eye and second image data for a left eye.

6. The display device of claim 1, wherein the display device comprises a driving mode comprising a 3D mode configured to display a 3-dimensional image and a 2D mode configured to display a 2-dimensional image, and the frame generating unit is configured to divide the image data into the n image data for each viewpoint in the 3D mode.

7. The display device of claim 6, wherein in the 2D mode, the frame generating unit is configured to directly output the image data, and the gradation converting unit is configured to perform a dithering operation to the output frame using a dither matrix comprising a plurality of critical values which one-to-one correspond to image data so that the image data are expressed with 1 bits, and to output the dithered image data for each viewpoint as the output image signals.

8. A display device, comprising:

a frame generating unit configured to receive an input frame comprising a plurality of image data, to divide the image data into n different image data for each viewpoint, wherein n is a natural number greater than or equal to 2, and to generate an output frame composed of a plurality of 3-dimensional image data comprising the n image data for each viewpoint;

a filter processing unit configured to match a reference group of a filter comprising a plurality of elements which are classified into k groups, wherein k is a natural number greater than or equal to 4 corresponding to k 3-dimensional image data to each of the 3-dimensional image data, to convert each of the image data for each viewpoint comprising each of the 3-dimensional image data using image data of the same viewpoint included in neighboring 3-dimensional image data and elements of a filter corresponding thereto, and to output the converted n image data for each viewpoint as output image signals;

a data driving unit configured to generate a data driving voltage signal based on the output image signals received from the filter processing unit; and

is a display panel configured to display an image in response to receiving the data driving voltage signal from the data driving unit.

9. The display device of claim 8, wherein each of the plurality of the elements has the same value.

10. The display device of claim 8, wherein the image data for each view point comprises first image data for a right eye and second image data for a left eye.

11. The display device of claim 8, wherein each of the image data for each viewpoint comprises zth viewpoint red image data, zth viewpoint green image data, and zth viewpoint blue image data, wherein z is a natural number from 1 to n.

12. The display device of claim 11, wherein the filter processing unit is configured to convert the zth viewpoint red image data, the zth viewpoint green image data, and the zth viewpoint blue image data comprising each of the 3-dimensional image data using zth viewpoint red image data, zth viewpoint green image data, and zth viewpoint blue image data included in the neighboring 3-dimensional image data, and elements of a corresponding filter.

13. The display device of claim 8, wherein the display device comprises a driving mode comprising a 3D mode configured to display a 3-dimensional image and a 2D mode configured to display a 2-dimensional image, and the frame generating unit is configured to divide the image data into the n image data for each viewpoint in the 3D mode.

14. A method for processing data provided to a display panel which comprises a plurality of pixels for displaying an image, the method comprising:

receiving an input frame comprising m-bit image data, wherein m is a natural number from the outside, dividing the image data into n different image data for each viewpoint, wherein n is a natural number greater than or equal to 2, and generating an output frame comprising a plurality of 3-dimensional image data comprising the n different image data for each viewpoint; and

dithering the output frame using a dither matrix comprising a plurality of (m-1)-bit critical values which are divided into k groups, wherein k is a natural number greater than or equal to 4, and the division is performed by one-to-one correspondence with k numbers of the 3-dimensional image data so that each of the image data for each viewpoint expresses m-bit gradation with 1 bits, and outputting the dithered image data for each viewpoint as output image signals.

15. The method of claim 14, wherein the dithering of the output frame comprises

selecting upper 1 bits among m bits of each of the image data for each viewpoint included in the output frame, and converting the selected bits into a medium image data,

dividing the output frame into a plurality of regions, comparing a value expressed by lower (m-1) bits of each of image data for each viewpoint included in each region with a critical value corresponding thereto, and outputting a result of the comparison, and

compensating the medium image data according to the result, and outputting the compensated medium image data as the output image signals.

16. The method of claim 14, further comprising:

determining whether a driving mode is a 3D mode for displaying a 3-dimensional image or a 2D mode for displaying a 2-dimensional image, wherein when the driving mode is the 3D mode, the image data are divided into the n image data for each viewpoint.

17. The data processing method of claim 16, wherein when the driving mode is the 2D mode, the image data are directly outputted, and dithering the output frame using a dither matrix comprising a plurality of critical values which are one-to-one correspondence with the image data so that the image data have 1-bit gradation, and outputting the dithered image data for each viewpoint as the output image signals.

18. A data processing method, comprising:

receiving an input frame comprising a plurality of image data, dividing the image data into n different image data for each viewpoint, wherein n is 2 or larger natural number, generating an output frame composed of a plurality of 3-dimensional image data comprising the n image data for each viewpoint; and

matching a reference group of a filter comprising a plurality of elements which are classified into k groups, wherein k is 4 or larger natural number, which corresponding to k 3-dimensional image data to each of the 3-dimensional image data, converting each of the image data for each viewpoint composing each of the 3-dimensional image data using image data of the same viewpoint included in neighboring 3-dimensional image data and elements of a filter corresponding thereto, and outputting the converted n image data for each viewpoint as output image signals.

19. The data processing method of claim 18, wherein each of the plurality of the elements has the same value.

20. The data processing method of claim 18, wherein each of the 3-dimensional image data comprises zth viewpoint red image data, zth viewpoint green image data, and zth viewpoint blue image data, wherein z is a natural number from 1 to n.

21. A display device, comprising:

a processor configured to divide m-bit image data, wherein the m is natural number into n different image data with respect to each view point, wherein the n is 2 or larger natural number, and to generate an output frame comprising a plurality of 3-dimensional image data comprising the n image data for each viewpoint, and to dither the output frame to express the image data for each viewpoint as m-bit gradation with 1-bits, wherein image data for each viewpoint in the output frame is outputted as output image signals.

22. A method for processing data provided to a display panel which comprises a plurality of pixels for displaying an image, the method comprising:

is dividing m-bit image data, wherein the m is natural number, into n different image data with respect to each view point, wherein the n is 2 or larger natural number, and to generate an output frame comprising a plurality of 3-dimensional image data comprising the n image data for each viewpoint;

dithering the output frame to express the image data for each viewpoint as m-bit gradation with 1-bits; and

outputting image data for each viewpoint in the output frame as output image signals.