CIRCULAR TOUCH PANEL AND MANUFACTURING METHOD OF THE SAME

• US 20160239131A1
• Filed: 07/23/2015
• Published: 08/18/2016
• Est. Priority Date: 02/16/2015
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kang, Sung Ku
• Application Number:
  US14/807,206
• Publication Number:
  US 20160239131A1
• 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 3/04164 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 3/0445 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 circular touch panel disposed on a circular display panel including a plurality of pixels, the circular touch panel including: a plurality of sensing electrodes; a plurality of connection wirings connecting the plurality of sensing electrodes to a signal processing circuit; and an insulator insulating the plurality of sensing electrodes from each other. The circular touch panel includes a circular boundary region patterned in an optical pattern.

Claims

1. A circular touch panel disposed on a circular display panel including a plurality of pixels, the circular touch panel comprising:

a plurality of sensing electrodes;

a plurality of connection wirings connecting the plurality of sensing electrodes to a signal processing circuit; and

an insulator insulating the plurality of sensing electrodes from each other,

wherein the circular touch panel comprises a circular boundary region patterned in an optical pattern.

2. The circular touch panel of claim 1, wherein:

the optical pattern in the circular boundary region comprises a material substantially identical to a material used for forming at least one of the plurality of sensing electrodes, the insulator, and the plurality of connection wirings.

3. The circular touch panel of claim 1, wherein:

the optical pattern comprises at least one pattern of a multiple-slit pattern, a mesh pattern, and an irregular pattern.

4. The circular touch panel of claim 1, wherein:

the optical pattern is configured to exhibit at least one of a light diffraction effect, a light interference effect, and a light scattering effect.

5. The circular touch panel of claim 1, wherein:

the optical pattern is patterned so as to correspond to a non-emitting region in a circular boundary region of the circular display panel; and

the non-emitting region in the circular boundary region of the circular display panel is adjacent to the plurality of pixels having a quadrangular shape.

6. The circular touch panel of claim 1, wherein:

the circular touch panel and the circular display panel are integrally formed.

7. A manufacturing method of a circular touch panel, the manufacturing method comprising:

forming a plurality of connection wirings by depositing and patterning a first metal layer on an insulating substrate;

forming a plurality of sensing electrodes by depositing and patterning a second metal layer such that sensing electrodes disposed adjacent to the plurality of connection wirings are connected to the plurality of connection wirings, respectively; and

forming and patterning an insulator so as to insulate the plurality of sensing electrodes,

wherein when at least one of the plurality of connection wirings, the plurality of sensing electrodes, and the insulator is patterned, an optical pattern is simultaneously patterned on a circular boundary region of the circular touch panel.

8. The manufacturing method of claim 7, wherein:

the optical pattern in the circular boundary region comprises a material identical to a material used for forming at least one of the plurality of connection wirings, the plurality of sensing electrodes, and the insulator.

9. The manufacturing method of claim 7, wherein:

the optical pattern comprises at least one pattern of a multiple-slit pattern, a mesh pattern, and an irregular pattern.

10. The manufacturing method of claim 7, wherein:

the optical pattern is formed to exhibit at least one of a light diffraction effect, a light interference effect, and a light scattering effect.

11. A touch screen panel, comprising:

a substrate comprising a curved boundary region;

a plurality of sensing electrodes disposed on the substrate;

a connection wiring connecting one of the plurality of sensing electrodes to a signal processing circuit; and

an insulator disposed on the plurality of sensing electrodes,

wherein an optical pattern is disposed on the curved boundary region to change a light propagation direction.

12. The touch screen panel of claim 11, further comprising:

a display panel comprising a curved boundary region corresponding to the curved boundary region of the substrate,

wherein the display panel comprises a plurality of pixels to display an image, and

wherein the curved boundary region of the display panel comprises a transparent area through which light passes.

13. The touch screen panel of claim 11, wherein the connection wiring comprises a curved portion, and

wherein a curvature of the curved portion corresponds to a curvature of the curved boundary region.

14. The touch screen panel of claim 11, wherein the insulator comprises a slit or a recess to form the optical pattern.

15. The touch screen panel of claim 11, further comprising:

a metal pattern disposed on the curved boundary region of the substrate to form the optical pattern.