Display device having pattern and method of detecting pixel position therein

• US 9,423,910 B2
• Filed: 12/03/2013
• Issued: 08/23/2016
• Est. Priority Date: 12/03/2012
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Seo, Seong-Min, Kim, Kang-Nam, Yun, In-Kuk
• Primary Examiner(s): Chow, Van
• Application Number:
  US14/095,576
• Publication Number:
  US 20140152626A1
• Time in Patent Office: 994 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/03542 Light pens for emitting or receiving light
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment

Abstract

A display device and method having a pattern are provided. The display device includes a plurality of color filters which correspond to one or more sub-pixels constituting a pixel of the display device; and a black matrix formed between the plurality of color filters, wherein the one or more sub-pixels include one or more position marks indicating an absolute position of each pixel of the display device and one or more error correction marks for correcting an error when the one or more position marks are detected.

Claims

1. A display device having a pattern, comprising:

a plurality of color filters which correspond to a plurality of sub-pixels constituting a pixel of the display device; and

a black matrix formed between the plurality of color filters,

wherein the plurality of sub-pixels include a pattern comprising a plurality of position marks indicating an absolute position of each pixel of the display device, and a plurality of error correction marks for correcting an error and for determining whether the correction of the error is possible when the plurality of position marks are detected.

2. The display device as claimed in claim 1, wherein the plurality of position marks comprise one or more X coordinate marks and one or more Y coordinate marks.

3. The display device as claimed in claim 1, wherein the plurality of error correction marks have a value using a Hamming code.

4. The display device as claimed in claim 1, wherein the plurality of sub-pixels are divided into an upper portion and a lower portion respectively, and the plurality of position marks and the plurality of error correction marks are formed at the lower portion.

5. The display device as claimed in claim 1, wherein the plurality of position marks and the plurality of error correction marks are implemented by using pentadecimal numeral system with respect to a 2×

2 pixel.

11. The display device as claimed in claim 1, wherein the plurality of sub-pixels further comprises one or more parity marks for detecting a sub-pixel in which the error occurs.

6. A method of detecting a position of a pixel in a display device having a pattern, the method comprising:

receiving an input of a display screen image captured by a camera to extract an effective pattern area for a recognition of a pattern from the display screen image;

detecting sub-pixels included in the effective pattern area so as to determine a plurality of sub-pixels including a pattern comprising a plurality of position marks indicating an absolute position of each pixel of the display device, and a plurality of error correction marks for correcting an error and for determining whether the correction of the error is possible;

determining a sub-pixel in which an error occurs among the plurality sub-pixels including the pattern of the plurality of position marks, by using the plurality of sub-pixels including the pattern of the plurality of position marks and the plurality of error correction marks;

correcting the error of the sub-pixel in which the error occurs, if the correction of the error is possible; and

calculating a display coordinate by using the pattern of the plurality of position marks included in the plurality of sub-pixels.

7. The method as claimed in claim 6, wherein the plurality of position marks comprise one or more X coordinate marks and one or more Y coordinate marks.

8. The method as claimed in claim 6, wherein the plurality of error correction marks have a value using a Hamming code.

9. The method as claimed in claim 6, wherein the plurality of sub-pixels are divided into an upper portion and a lower portion respectively, and the plurality of position marks and the plurality of error correction marks are formed at the lower portion.

10. The method as claimed in claim 6, wherein the plurality of position marks and the plurality of error correction marks are implemented by using pentadecimal numeral system with respect to a 2×

2 pixel.

12. The method as claimed in claim 6, wherein the plurality of sub-pixels further comprises one or more parity marks for detecting the sub-pixel in which the error occurs.