Display device integrated with touch screen panel

Patent metadata

Field	Value
Publication number	US-9348474-B2
Application number	US-201414221856-A
Country	US
Kind code	B2
Filing date	Mar 21, 2014
Priority date	Sep 17, 2013
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A display device integrated with a touch screen panel includes upper and lower substrates; the upper substrate comprising a major surface; a display area and a non-display area next to the display area when viewed in a viewing direction perpendicular to the major surface; and a sealing material formed between the upper and lower substrates and in the non-display area when viewed in the viewing direction. The display further includes a sensing cell structure formed over the upper substrate and in the display area; conductive lines formed over the upper substrate and in the non-display area, and connected to the sensing cell structure. The conductive lines overlap with the sealing material; and an optical layer is formed between two immediately neighboring conductive lines among the conductive lines.

First claim

What is claimed is:

1. A display device integrated with a touch screen panel, comprising:
upper and lower substrates, the upper substrate comprising a major surface;
a display area and a non-display area next to the display area when viewed in a viewing direction perpendicular to the major surface;
a sensing cell structure comprising a plurality of sensing cells and formed over the upper substrate and in the display area when viewed in the viewing direction;
a plurality of conductive lines formed over the upper substrate and in the non-display area when viewed in the viewing direction, the plurality of conductive lines comprising a first conductive line and a second conductive line that are connected to different sensing cells of the sensing cell structure;
a sealing material formed between the upper and lower substrates and in the non-display area when viewed in the viewing direction;
the first and second conductive lines being at the same level over the sealing material in a cross-section taken along a plane parallel to the viewing direction, the first and second conductive lines extending parallel to each other and immediately neighboring with each other when viewed in the viewing direction; and
an optical layer overlapping with the sealing material and extending between the first and second conductive lines when viewed in the viewing direction.

2. The display device of claim 1 , wherein the optical layer is formed of a material having a refractive index of about 2 or more while allowing light to be transmitted therethrough.

3. The display device of claim 2 , wherein the optical layer is formed of indium tin oxide (ITO).

4. The display device of claim 1 , wherein the upper substrate comprising a recessed area formed on a surface thereof and positioned between the first and second conductive lines when viewed in the viewing direction, wherein the optical layer is formed in the recessed area.

5. The display device of claim 4 , wherein the recessed area of the upper substrate has a section formed in the shape of an inverse triangle.

6. A display device integrated with a touch screen panel, comprising:
upper and lower substrates, the upper substrate comprising a major surface;
a display area and a non-display area next to the display area when viewed in a viewing direction perpendicular to the major surface;
a sensing cell structure comprising a plurality of sensing cells and formed over the upper substrate and in the display area when viewed in the viewing direction;
a plurality of conductive lines formed over the upper substrate and in the non-display area when viewed in the viewing direction, the plurality of conductive lines being connected to the sensing cell structure;
a sealing material formed between the upper and lower substrates and in the non-display area when viewed in the viewing direction;
the plurality of conductive lines overlapping with the sealing material when viewed in the viewing direction;
an optical layer formed between two immediately neighboring conductive lines among the plurality of conductive lines when viewed in the viewing direction; and
an insulation layer formed over the upper substrate and the conductive lines, and
wherein the insulation layer comprises a recessed area formed on a surface thereof and positioned between the two immediately neighboring conductive lines when viewed in the viewing direction, wherein the optical layer is formed in the recessed area.

7. The display device of claim 6 , wherein the recessed area of the upper substrate has a section formed in the shape of an inverse triangle.

8. The display device of claim 1 , further comprising a driving circuit area formed in the non-display area when viewed in the viewing direction.

9. The display device of claim 1 , wherein the sensing cell structure comprises:
the plurality of sensing cells comprising:
first sensing cells arranged along row lines extending along a first direction; and
second sensing cells arranged along column lines extending along a second direction,
first connecting lines, each of which is formed to connect two cells among the first sensing cells arranged along the first direction; and
second connecting lines, each of which is formed to connect two cells among the second sensing cells arranged along the second direction.

10. The display device of claim 9 , wherein the plurality of sensing cells are formed in the same layer.

11. The display device of claim 10 , wherein the second sensing cells are integrally formed with the second connecting lines.

12. The display device of claim 10 , further comprising an insulation layer interposed between one of the first connecting lines and one of the second connecting lines which overlap each other when viewed in the viewing direction.

13. The display device of claim 9 , wherein the plurality of sensing cells are formed on an outer surface of the upper substrate.

14. The display device of claim 1 , wherein the upper substrate is a sealing substrate of an organic light emitting display device.

15. The display device of claim 1 , further comprising:
a polarizing film placed over the upper substrate over which the sensing cell structure and the plurality of conductive lines are formed; and
a window substrate placed over the polarizing film.

16. The display device of claim 15 , wherein a black matrix layer is formed over the window substrate and in the non-display area when viewed in the viewing direction.

17. A display device integrated with a touch screen panel, comprising:
upper and lower substrates, the upper substrate comprising a major surface;
a display area and a non-display area next to the display area when viewed in a viewing direction perpendicular to the major surface;
a sensing cell structure comprising a plurality of sensing cells and formed over the upper substrate and in the display area when viewed in the viewing direction;
a plurality of conductive lines formed over the upper substrate and in the non-display area when viewed in the viewing direction, the plurality of conductive lines being connected to the sensing cell structure;
a sealing material formed between the upper and lower substrates and in the non-display area when viewed in the viewing direction;
the plurality of conductive lines overlapping, with the sealing, material when viewed in the viewing direction;
an optical layer formed between two immediately neighboring conductive lines among the plurality of conductive lines when viewed in the viewing direction;
a polarizing file laced over the upper substrate over which the sensing cell structure and the conductive lines are formed; and
a window substrate placed over the polarizing film,
wherein the polarizing film is flexible and comprises a polarizer, a retardation compensation layer, and a transparent adhesive for supporting the polarizer and attaching the retardation compensation layer to the polarizer.

18. The display device of claim 15 , wherein the window substrate is flexible and formed of at least one selected from the group consisting of polymethyl methacrylate (PMMA), acryl and polyester.

Assignees

• Samsung Display Co Ltd

Inventors

• Hong Sang-Min

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F3/0445 Primary

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title