Touch screen panel

• US 9,389,736 B2
• Filed: 06/26/2013
• Issued: 07/12/2016
• Est. Priority Date: 03/05/2013
• 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, Jung-Yun, Park, Mi-Ae
• Primary Examiner(s): Chatly, Amit
• Application Number:
  US13/928,273
• Publication Number:
  US 20140253473A1
• Time in Patent Office: 1,112 Days
• Field of Search: 345173-175
• US Class Current: 1/1
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touch screen panel is disclosed. In one aspect, the touch screen panel includes a substrate divided into a display area and a non-display area positioned outside the display area, sensing lines in the display area and wiring lines in the non-display area. Each wiring line is connected to two or more sensing lines. The switching units are connected to the sensing lines and the wiring lines so as to selectively connect one of each of the sensing lines to each of the wiring lines.

Claims

1. A touch screen panel, comprising:

a substrate divided into a display area and a non-display area outside the display area;

a plurality of wiring lines in the non-display area, the wiring lines comprising a first group of wiring lines on a first side of the non-display area and a second group of wiring lines on a second side of the non-display area opposing to the first side;

a plurality of sensing lines in the display area, wherein for each wiring line, at least two sensing lines are in the display area;

a plurality of switching units between the sensing lines and the wiring lines to selectively connect one of the at least two sensing lines for each wiring line to each wiring line, the switching units comprising a first switching unit on the first side and a second switching unit on the second side,

wherein each switching unit comprises;

a first transistor connected between a first sensing line and a first wiring line; and

a second transistor connected between a second sensing line that is adjacent to the first sensing line and the first wiring line, the first sensing line being an odd sensing line and the second sensing line being an even sensing line; and

a controller configured to output sensing signals for driving the sensing lines and an output signal for controlling the switching units,

wherein the first switching unit is connected to the first group and the second switching unit is connected to the second group, the first and second switching units being connected to different sensing lines to each other, and

wherein the controller sequentially;

transmits one or more sensing signals having predetermined voltage levels to the wiring lines, and

transmits a first gate signal to the first transistor, and transmits a second gate signal obtained by inverting the first gate signal to the second transistor.

2. The touch screen panel of claim 1, wherein the second transistor is turned off while the first transistor is turned on and the second transistor is turned on while the first transistor is turned off.

3. The touch screen panel of claim 1, wherein each of the transistors comprises:

a source electrode connected to one of the sensing lines;

a drain electrode connected to one of the wiring lines; and

a gate electrode configured to receive the control signal from the controller.

4. The touch screen panel of claim 1, wherein there are more sensing lines than wiring lines.

5. The touch screen panel of claim 1, wherein the sensing lines are formed to be connected in a first direction, and further comprising other sensing lines that are formed to be connected in a second direction that intersects the first direction.

6. The touch screen panel of claim 1, further comprising

a first set of sensing lines and a second set of sensing lines;

a plurality of bridge patterns, wherein the bridge patterns and the first set of sensing lines are in different layers, and

wherein the bridge patterns intersect the second set of sensing lines and are connected to the first set of sensing lines.

7. The touch screen panel of claim 1, further comprising an insulating layer interposed between the bridge patterns and connecting parts of the second set of sensing lines.

8. The touch screen panel of claim 1, wherein for each wiring line, only two sensing lines are in the display area of the substrate.