Digitizer circuit patterning method and electronic device supporting the same

Patent metadata

Field	Value
Publication number	US-10310644-B2
Application number	US-201615064012-A
Country	US
Kind code	B2
Filing date	Mar 8, 2016
Priority date	Mar 13, 2015
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

An electronic device is provided. The electronic device includes a reflector sheet disposed under a display panel and a digitizer disposed under the reflector sheet. The digitizer may include a first circuit layer including a conductive circuit pattern arranged in a first direction, a second circuit layer including a conductive circuit pattern arranged in a second direction, and an insulating layer electrically isolating the first circuit layer and the second circuit layer. The digitizer further includes at least one dummy circuit pattern formed on at least one of the first circuit layer or the second circuit layer.

First claim

What is claimed is:

1. An electronic device comprising:
a reflector sheet disposed under a display panel; and
a digitizer disposed under the reflector sheet,
wherein the digitizer comprises:
a first circuit layer comprising a conductive circuit pattern arranged in a first direction;
a second circuit layer comprising a conductive circuit pattern arranged in a second direction;
an insulating layer electrically isolating the first circuit layer and the second circuit layer; and
at least one dummy circuit pattern formed on at least one of the first circuit layer or the second circuit layer,

wherein the at least one dummy circuit pattern is electrically isolated, and
wherein the at least one dummy circuit pattern is based on a composition of the reflector sheet.

2. The electronic device of claim 1 ,
wherein conductive circuits constituting the conductive circuit pattern form a loop, and
wherein dummy circuits constituting the at least one dummy circuit pattern do not form a loop.

3. The electronic device of claim 1 , wherein at least one of a height or a thickness of dummy circuits constituting the at least one dummy circuit pattern and at least one of a height or a thickness of conductive circuits constituting the conductive circuit pattern are the same as each other or have a difference within a specific tolerance range.

4. The electronic device of claim 1 , wherein dummy circuits constituting the at least one dummy circuit pattern are spaced from conductive circuits constituting the conductive circuit pattern by a specific interval.

5. The electronic device of claim 1 , wherein dummy circuits constituting the at least one dummy circuit pattern are formed such that an interval between adjacent two dummy lines constituting the dummy circuits and an interval between a specific dummy circuit pattern and a specific conductive circuit pattern are the same as each other or have a difference within a specific tolerance range.

6. The electronic device of claim 1 , wherein dummy circuits constituting the at least one dummy circuit pattern are formed such that an interval between adjacent two dummy lines constituting the dummy circuits and an interval between adjacent two circuit lines corresponding to conductive circuits constituting the conductive circuit pattern are the same as each other or have a difference within a specific tolerance range.

7. The electronic device of claim 1 ,
wherein the conductive circuit pattern is formed such that at least one straight line shaped circuit line of an ordinate or abscissa direction is repeated at regular intervals, and
wherein the at least one dummy circuit pattern is formed such that at least one straight line shaped dummy line of a same direction as the circuit line is repeated at regular intervals.

8. The electronic device of claim 1 ,
wherein the conductive circuit pattern:
has at least one shape, and
is repeated at regular intervals, and

wherein the at least one dummy circuit pattern is formed such that at least one dummy circuit is repeated at regular intervals in an area corresponding to the at least one shape.

9. The electronic device of claim 8 ,
wherein each of dummy lines corresponding to dummy circuits constituting the at least one dummy circuit pattern is a bending line bent at least once, and
wherein at least one is bent in a same direction or in an opposite direction so as to surround each other.

10. The electronic device of claim 8 ,
wherein at least one dummy line corresponding to the at least one dummy circuit pattern is a bending line bent at least once and at least one of the others thereof is a straight line, and
wherein the straight line is formed in parallel with at least one side of the bending line.

11. The electronic device of claim 8 , wherein dummy lines corresponding to dummy circuits constituting the at least one dummy circuit pattern are:
a straight line, and
arranged in parallel with at least one side of the at least one shape.

12. The electronic device of claim 1 , wherein no current flows through dummy circuits constituting the at least one dummy circuit pattern.

13. An electronic device comprising:
a case;
a display panel disposed in the case;
a reflector sheet disposed under the display panel; and
a digitizer disposed between the case and the reflector sheet,
wherein the digitizer comprises:
a first circuit layer comprising a conductive circuit pattern arranged in a first direction;
a second circuit layer comprising a conductive circuit pattern arranged in a second direction;
an insulating layer electrically isolating the first circuit layer and the second circuit layer; and
at least one dummy circuit which is formed on at least one of the first circuit layer or the second circuit layer, the at least one dummy circuit having a dummy circuit pattern,

wherein the at least one dummy circuit is repeated to be spaced from conductive circuits constituting the conductive circuit pattern by a regular interval,
wherein the at least one dummy circuit is electrically isolated, and
wherein the dummy circuit pattern is based on a composition of the reflector sheet.

14. An electronic device comprising:
a reflector sheet disposed under a display panel; and
a digitizer disposed under the reflector sheet,
wherein the digitizer comprises:
an insulating layer, and
at least one circuit layer formed on at least one surface of the insulating layer,

wherein the circuit layer comprises:
a conductive circuit pattern, and
a dummy circuit pattern,

wherein the dummy circuit pattern is electrically isolated, and
wherein the dummy circuit pattern is based on a composition of the reflector sheet.

15. The electronic device of claim 14 , wherein the conductive circuit pattern and the dummy circuit pattern are formed on a surface adjacent to the reflector sheet.

16. The electronic device of claim 14 , wherein no current flows through dummy circuits constituting the dummy circuit pattern.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Park Che Uk

Classifications

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• B32B2457/208

  Touch screens · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B27/281

  comprising polyimides · CPC title

• G06F3/046

  by electromagnetic means · CPC title