DISPLAY DEVICE HAVING PATTERN AND METHOD OF DETECTING PIXEL POSITION THEREIN

• US 20140152626A1
• Filed: 12/03/2013
• Published: 06/05/2014
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Seo, Seong-Min, Kim, Kang-Nam, Yun, In-Kuk
• Granted Patent: US 9,423,910 B2
• Time in Patent Office: Days
• US Class Current: 345/178
• 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 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.

2. The display device as claimed in claim 1, wherein the one or more 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 error correction marks have a value using a Hamming code.

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

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

2 pixel.

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 sub-pixels including one or more position marks and error correction marks;

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

correcting the error of the sub-pixel in which the error occurs; and

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

7. The method as claimed in claim 6, wherein the one or more 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 error correction marks have a value using a Hamming code.

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

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

2 pixel.