Touch Screen Panel and Fabrication Method Thereof

• US 20110227838A1
• Filed: 09/15/2010
• Published: 09/22/2011
• Est. Priority Date: 03/16/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Hwang, Sung-Joo, Hwang, Won-Mi, Cho, Se-Il, Kim, Ji-Eun, JEON, Hee-Chul
• Granted Patent: US 8,773,371 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 2203/04111 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 Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• 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 flat panel display integrated with a touch screen panel. The connecting patterns, which connect adjacent first sensing cells and adjacent second sensing cells are formed on the same level of the lower surface of the upper substrate of the flat panel display of the same material as metal patterns formed around the edge of the touch screen panel, and by arranging the connecting patterns not to cross each other. The flat panel display panel can also be integrated with a touch screen having improved visibility by forming the touch screen panel on the upper substrate of the flat panel display such that connecting patterns are formed in the regions between the pixels.

Claims

1. A flat panel display integrated with a touch screen panel, comprising:

an upper substrate and a lower substrate each divided into a display region and non-display region formed around the display region;

a plurality of sensing patterns formed in the display region of the upper substrate; and

a plurality of pixels formed in the display region of the lower substrate,

wherein the sensing patterns include;

a plurality of first connecting patterns arranged in a first direction,

a plurality of second connecting patterns arranged in a second direction at a predetermined distance from the first connecting patterns,

a plurality of first sensing cells electrically contacting and connected with the first connecting patterns and arranged in the first direction,

a plurality of second sensing cells electrically contacting and connected with the second connecting patterns and arranged in the second direction, and

the first connecting patterns and the second connecting patterns are arranged to overlap the regions between the pixels.

2. The flat panel display integrated with a touch screen panel as claimed in claim 1, wherein the first and second connecting patterns are made of opaque metal.

3. The flat panel display integrated with a touch screen panel as claimed in claim 1, further comprising a plurality of metal pads disposed at the edges of the display region where the first and second sensing cells are formed, and electrically connecting the sensing cells in one column or row to sensing lines.

4. The flat panel display integrated with a touch screen panel as claimed in claim 3, wherein the first and second connecting patterns and the metal pads are formed on the same layer and made of metal having lower resistance than the material of the first and second sensing cells.

5. The flat panel display integrated with a touch screen panel as claimed in claim 1, wherein the second sensing cells alternate with and adjoin the first sensing cells.

6. The flat panel display integrated with a touch screen panel as claimed in claim 1, wherein:

the upper substrate is an encapsulation substrate made of a transparent material, and

a plurality of pixels including an organic light emitting element, a thin film transistor, and a storage cover is formed.

7. The flat panel display integrated with a touch screen panel as claimed in claim 6, wherein a plurality of sensing patterns is formed on the lower surface of the upper substrate which faces the lower substrate.

8. The flat panel display integrated with a touch screen panel as claimed in claim 1, wherein:

the upper substrate is a color filter substrate including color filters and a black matrix, and

a plurality of pixels including a thin film transistor, a pixel electrode, and a storage cover is formed.

9. The flat panel display integrated with a touch screen panel as claimed in claim 8, wherein:

color filters and a black matrix disposed between the color filters are formed on the lower surface of the upper substrate which faces the lower substrate, and

a plurality of sensing patterns is formed on the upper surface of the upper substrate.

10. The flat panel display integrated with a touch screen panel as claimed in claim 9, wherein the color filters are arranged to overlap the pixels arranged in the display region of the lower substrate.

11. The flat panel display integrated with a touch screen panel as claimed in claim 9, wherein the first and second connecting patterns included in the sensing patterns are arranged to overlap the black matrix region between the color filters.