Driving circuit board, electronic apparatus including driving circuit board, and method of fabricating electronic apparatus

Patent metadata

Field	Value
Publication number	US-12165571-B2
Application number	US-202218085162-A
Country	US
Kind code	B2
Filing date	Dec 20, 2022
Priority date	May 20, 2022
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

A driving circuit board includes a driving circuit board includes: a plurality of driving electrode regions on a surface of the driving circuit board; a plurality of driving electrodes symmetrically arranged on the plurality of driving electrode regions; and a driving circuit electrically connected to at least one of the plurality of driving electrodes, wherein the plurality of driving electrodes include at least one dummy electrode that is not connected to the driving circuit.

First claim

What is claimed is:

1. A driving circuit board comprising:
a plurality of driving electrode regions on a surface of the driving circuit board;
a plurality of driving electrodes symmetrically arranged on the plurality of driving electrode regions; and
a driving circuit electrically connected to at least one of the plurality of driving electrodes,
wherein the plurality of driving electrodes comprise at least one dummy electrode that is not connected to the driving circuit,
wherein each of the plurality of driving electrode regions comprises a first sub-driving electrode region and a second sub-driving electrode region that is different from the first sub-driving electrode region, and
wherein the plurality of driving electrodes further comprise a first driving electrode provided in the first sub-driving electrode region and a second driving electrode provided in the second sub-driving electrode region and electrically disconnected to the first driving electrode.

2. The driving circuit board of claim 1 , wherein the first sub-driving electrode region is a central region of each of the plurality of driving electrode regions, and the second sub-driving electrode region surrounds the first sub-driving electrode region.

3. The driving circuit board of claim 1 , wherein the second driving electrode comprises at least one first sub-driving electrode and at least one first dummy electrode that are spaced apart from each other.

4. The driving circuit board of claim 3 , wherein the at least one first sub-driving electrode is electrically connected to the driving circuit, and the at least one first dummy electrode is electrically disconnected with respect to the at least one first sub-driving electrode.

5. The driving circuit board of claim 1 , wherein each of the plurality of driving electrode regions further comprises a third sub-driving electrode region that is different from the first sub-driving electrode region and the second sub-driving electrode region, and
wherein the plurality of driving electrodes further comprise a third driving electrode provided in the third sub-driving electrode region and electrically disconnected with respect to the first driving electrode and the second driving electrode.

6. The driving circuit board of claim 5 , wherein the first sub-driving electrode region is a central region of each of the plurality of driving electrode regions, the second sub-driving electrode region surrounds the first sub-driving electrode region, and the third sub-driving electrode region surrounds the second sub-driving electrode region.

7. The driving circuit board of claim 5 , wherein the second driving electrode comprises at least one first sub-driving electrode and at least one first dummy electrode that are spaced apart from each other, and
wherein the third driving electrode comprises at least one second sub-driving electrode and at least one second dummy electrode that are spaced apart from each other.

8. The driving circuit board of claim 7 , wherein the at least one first sub-driving electrode is electrically connected to the driving circuit, and the at least one first dummy electrode is electrically disconnected with respect to the at least one first sub-driving electrode, and
wherein the at least one second sub-driving electrode comprises at least two second sub-driving electrodes that are electrically connected to each other, and the at least one second dummy electrode is electrically disconnected with respect to the at least two second sub-driving electrodes.

9. An electronic apparatus comprising:
a driving circuit board comprising:
a plurality of driving electrode regions on a first surface of the driving circuit board;
a plurality of driving electrodes symmetrically arranged in the plurality of driving electrode regions; and
a driving circuit electrically connected to at least one of the plurality of driving electrodes; and

at least one electronic device provided on the driving circuit board and comprising a plurality of pad electrodes symmetrically arranged on a second surface of the at least one electronic device to respectively face the plurality of driving electrodes in the plurality of driving electrode regions on the first surface of the driving circuit board, wherein the plurality of driving electrodes comprise at least one dummy electrode that is not connected to the driving circuit,
wherein each of the plurality of driving electrode regions comprises a first sub-driving electrode region and a second sub-driving electrode region that is different from the first sub-driving electrode region, and
wherein the plurality of driving electrodes further comprises a first driving electrode provided on the first sub-driving electrode region and a second driving electrode provided on the second sub-driving electrode region and electrically disconnected to the first driving electrode.

10. The electronic apparatus of claim 9 ,
wherein the at least one electronic device further comprises a first pad region and a second pad region on the second surface of the at least one electronic device, and the second pad region is different from the first pad region, and
wherein the plurality of pad electrodes comprise a first pad electrode provided in the first pad region and a second pad electrode provided in the second pad region and electrically disconnected to the first pad electrode.

11. The electronic apparatus of claim 10 , wherein the first sub-driving electrode region and the second sub-driving electrode region are arranged to correspond to the first pad region and the second pad region, respectively.

12. The electronic apparatus of claim 10 , wherein the first sub-driving electrode region is a central region of each of the plurality of driving electrode regions, and the second sub-driving electrode region surrounds the first sub-driving electrode region, and
wherein the first pad region is a central region of the second surface of the at least one electronic device, and the second pad region surrounds the first pad region.

13. The electronic apparatus of claim 12 , wherein the second pad electrode has a ring shape and surrounds the first pad electrode.

14. The electronic apparatus of claim 10 , wherein the second driving electrode comprises at least one first sub-driving electrode and at least one first dummy electrode that are spaced apart from each other, and
wherein the second pad electrode comprises at least two first sub-pad electrodes that are spaced apart from each other.

15. The electronic apparatus of claim 14 , wherein the at least one first sub-driving electrode is electrically connected to the driving circuit, and the at least one first dummy electrode is electrically disconnected with respect to the at least one first sub-driving electrode.

16. The electronic apparatus of claim 14 , wherein the at least two first sub-pad electrodes are electrically connected to the at least one first sub-driving electrode and the at least one first dummy electrode.

17. The electronic apparatus of claim 10 , wherein each of the plurality of driving electrode regions further comprises a third sub-driving electrode region that is different from the first sub-driving electrode region and the second sub-driving electrode region,
wherein the plurality of driving electrodes further comprise a third driving electrode provided in the third sub-driving electrode region and electrically disconnected with respect to the first driving electrode and the second driving electrode,
wherein the at least one electronic device further comprises a third pad region on the secon

Assignees

• Samsung Electronics Co Ltd
• Foundation Soongsil Univ Industry Cooperation

Inventors

• Hwang Junsik
• Yoo Geonwook
• Lee Hojin
• Kim Yongchan
• Hwang Kyungwook

Classifications

• H10W90/00

  Package configurations · CPC title

• H10H20/857

  Interconnections, e.g. lead-frames, bond wires or solder balls · CPC title

• H10H20/831

  characterised by their shape · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10H20/0364

  of interconnections · CPC title