TOUCH SCREEN PANEL

• US 20130002569A1
• Filed: 09/21/2011
• Published: 01/03/2013
• Est. Priority Date: 06/30/2011
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kang, Sung-Ku, Park, Mi-Ae, Han, Kwan-Young, Jung, Tae-Hyeog, Itakura, Mikiya
• Granted Patent: US 9,128,569 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0445 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 includes a thin film substrate having sensing patterns formed thereon that is implemented as an isotropic film, and a polarizing plate is disposed on the sensing patterns so that it is possible to minimize or reduce degradation of image quality. The touch screen panel includes a thin film substrate, sensing patterns, and sensing lines. The thin film substrate is divided into an active area and a non-active area. The sensing patterns are formed in the active area of the thin film substrate. The sensing lines are formed in the non-active area of the thin film substrate so as to be connected to the sensing patterns. In the touch screen panel, the thin film substrate is implemented as an isotropic film.

Claims

1. A touch screen panel comprising:

a thin film substrate divided into an active area and a non-active area;

sensing patterns at the active area of the thin film substrate; and

sensing lines at the non-active area of the thin film substrate, the sensing lines connected to the sensing patterns,

wherein the thin film substrate comprises an isotropic film.

2. The touch screen panel according to claim 1, wherein the isotropic film comprises one of cyclic polyolefin (COP), non-stretched polycarbonate, or triacetylcelluose (TAC).

3. The touch screen panel according to claim 1, wherein the thickness of the thin film substrate is between about 0.02 mm and about 0.2 mm.

4. The touch screen panel according to claim 1, further comprising:

a polarizing plate on the sensing patterns; and

a window substrate on the polarizing plate.

5. The touch screen panel according to claim 1, wherein the sensing patterns comprise first and second sensing cells alternately arranged so as not to overlap with each other.

6. The touch screen panel according to claim 5, wherein the first and second sensing patterns are located at different layers from each other.

7. The touch screen panel according to claim 1, wherein the sensing patterns comprise:

first sensing cells connected to one another along a first direction on a first surface of the thin film substrate;

first connection lines each connected between adjacent ones of the first sensing cells;

second sensing cells connected to one another along a second direction on a second surface of the thin film substrate; and

second connection lines each connected between adjacent ones of the second sensing cells.

8. The touch screen panel according to claim 1, wherein the thin film substrate has a stacked structure comprising first and second thin film substrates.

9. The touch screen panel according to claim 8, wherein the sensing patterns comprise:

first sensing cells connected to one another along the first direction on a surface of the first thin film substrate;

first connection lines each connected between adjacent ones of the first sensing cells;

second sensing cells connected to one another along the second direction on a surface of the second thin film substrate; and

second connection lines each connected between adjacent ones of the second sensing cells.