POSITION INPUT DEVICE AND DISPLAY DEVICE

• US 20160299603A1
• Filed: 01/08/2015
• Published: 10/13/2016
• Est. Priority Date: 01/15/2014
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: TSUJIOKA, Tomotoshi, MIYAZAKI, Shinichi, YABUTA, Kohji, NOMA, Mikihiro
• Granted Patent: US 10,175,834 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch panel (a position input device) includes a trace group including traces arranged at intervals, and an electrode portion including a driving electrode and a detection electrode. The traces, the driving electrode, and the detection electrode are made of a light transmissive conductive film. The driving electrode and the detection electrode are arranged adjacent to the trace group and include a slit extending along the traces.

Claims

1. :

A position input device comprising;

a trace group including traces arranged at an interval, the traces being made of a light transmissive conductive film; and

an electrode portion made of the light transmissive conductive film, arranged adjacent to the trace group, and including a slit extending along the traces.

2. :

The position input device according to claim 1, wherein the electrode portion includes slits that are arranged at an interval and separated from each other.

3. :

The position input device according to claim 1, wherein the slit has a width that is equal to the interval between the traces that are included in the trace group and are adjacent to each other.

4. :

The position input device according to claim 1, wherein the electrode portion includes slits that are arranged at an interval and the interval between adjacent slits is equal to a line width of the traces included in the trace group.

5. :

The position input device according to claim 4, wherein

the trace group includes the traces having different line widths, and

the interval between the adjacent slits included in the electrode portion is equal to a greatest one of the different line widths.

6. :

The position input device according to claim 4, wherein

the trace group includes the traces having different line widths, and

the interval between the adjacent slits included in the electrode portion is between a smallest one of the different line widths and a greatest one of the different line widths.

7. :

The position input device according to claim 1, wherein

each of the traces included in the trace group has a planar shape extending with being bent in a zigzag shape, and

the slit included in the electrode portion has a planar shape having bending portions.

8. :

The position input device according to claim 1, wherein

the electrode portion includes a driving electrode and a detection electrode, the driving electrode is connected to any of the traces included in the trace group and generates an electric field, and the detection electrode is arranged adjacent to the driving electrode and detects the electric field from the driving electrode, and

the driving electrode and the detection electrode include the slits.

9. :

The position input device according to claim 1, wherein

the driving electrode includes driving electrodes and the detection electrode includes detection electrodes, and the driving electrodes and the detection electrodes are arranged along the traces, and

the electrode portion further includes a dummy electrode made of the light transmissive conductive film and arranged between the trace group and one of the driving electrodes and the detection electrodes, and the dummy electrode includes the slit.

10. :

The position input device according to claim 8, wherein

the driving electrode is disposed adjacent to the trace group with respect to an arrangement direction in which the traces are arranged, and the detection electrode is disposed adjacent to the driving electrode with respect to the arrangement direction and on an opposite side from the trace group, and

the driving electrode and the detection electrode have outer edges and a part of the outer edges is along an outer edge of the traces, and the slits included in the driving electrode and the detection electrode are along the outer edge of the traces.

11. :

The position input device according to claim 8, wherein

each of the driving electrode and the detection electrode has a diamond planar shape and has outer edges, and the driving electrode and the detection electrode are adjacent to each other such that the outer edges thereof are parallel to each other, and the trace group is disposed between the driving electrode and the detection electrode, and the traces have a planar shape extending with being bent in a zigzag shape along the outer edges of the driving electrode and the detection electrode, and

the slits included in the driving electrode and the detection electrode have bending portions.

12. :

A display device comprising;

the position input device according to claim 1; and

a display panel arranged opposite the position input device and on an inner side with respect to the position input device.

13. :

A display device comprising;

a display panel including a base board; and

the position input device according to claim 1 disposed on an outer side surface of the base board.