Printed circuit board, display apparatus having a printed circuit board and method of manufacturing the printed circuit board

• US 9,930,770 B2
• Filed: 10/18/2016
• Issued: 03/27/2018
• Est. Priority Date: 09/11/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Kwan-Ho, Jang, Ick-Kyu, Myeong, Ji-Man
• Primary Examiner(s): NGUYEN, HOA CAO
• Application Number:
  US15/296,434
• Publication Number:
  US 20170042020A1
• Time in Patent Office: 525 Days
• Field of Search: 361816, 361818
• CPC Class Codes: G09G 2330/06 Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers
• CPC Class Codes: H05K 1/0218 by printed shielding conductors, ground planes or power plane H05K1/0236 takes precedence
• CPC Class Codes: H05K 1/0219 Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
• CPC Class Codes: H05K 1/0237 High frequency adaptations H05K1/0216 takes precedence
• CPC Class Codes: H05K 1/0298 Multilayer circuits
• CPC Class Codes: H05K 2201/0715 provided by an outer layer of PCB
• CPC Class Codes: H05K 2201/09236 Parallel layout layout of balanced signal pairs H05K1/0245; superposed layout H05K2201/09672
• CPC Class Codes: H05K 2201/09336 Signal conductors in same plane as power plane
• CPC Class Codes: H05K 2201/09672 Superposed layout, i.e. in different planes parallel traces in one plane H05K2201/09236
• CPC Class Codes: Y10T 29/49124 On flat or curved insulated base, e.g., printed circuit, etc.
• CPC Class Codes: Y10T 29/49126 Assembling bases
• CPC Class Codes: Y10T 29/49144 by metal fusion
• CPC Class Codes: Y10T 29/49156 with selective destruction of conductive paths

Abstract

A printed circuit board (“PCB”) includes a first pattern structure, a second pattern structure, a third pattern structure, and a fourth pattern structure. The first pattern structure includes a first ground pattern. The second pattern structure includes a first line pattern overlapping the first ground pattern and a second ground pattern electrically insulated from the first line pattern. The third pattern structure includes a third ground pattern overlapping the first line pattern and a second line pattern overlapping the second ground pattern. The fourth pattern structure includes a fourth ground pattern overlapping the second line pattern. Therefore, the PCB may decrease noise.

Claims

1. A printed circuit board comprising:

a first pattern structure including a first ground pattern;

a second pattern structure on the first pattern structure, the second pattern structure including;

a first line pattern overlapping the first ground pattern; and

a second ground pattern electrically insulated from the first line pattern;

a third pattern structure on the second pattern structure, the third pattern structure including;

a second line pattern overlapping the second ground pattern; and

a third ground pattern electrically insulated from the second line pattern and overlapping the first line pattern; and

a fourth pattern structure on the third pattern structure, the fourth pattern structure including;

a fourth ground pattern overlapping the second line pattern; and

a third line pattern electrically insulated from the fourth ground pattern,

wherein the first line pattern is not overlapped by and is not superimposed with any portion of the third line pattern in a plan view.

2. The printed circuit board of claim 1, wherein the third line pattern does not overlap both the first line pattern and the second line pattern.

3. The printed circuit board of claim 2, wherein the third line pattern overlaps the second ground pattern.

4. The printed circuit board of claim 2, wherein the third line pattern does not overlap the third ground pattern.

5. The printed circuit board of claim 1, wherein the fourth ground pattern overlaps both the first line pattern and the second line pattern.

6. The printed circuit board of claim 5, wherein the fourth ground pattern overlaps the third ground pattern.

7. The printed circuit board of claim 1, further comprising:

a controller electrically connected to the first line pattern and the second line pattern, wherein the controller receives a first differential signal from the first line pattern and applies a second differential signal to the second line pattern.

8. The printed circuit board of claim 7, further comprising:

a gamma voltage generator controlled by the controller to generate a gamma reference voltage, wherein the third line pattern transfers the gamma reference voltage generated by the gamma voltage generator.