Circular touch panel and manufacturing method of the same

Patent metadata

Field	Value
Publication number	US-2016239131-A1
Application number	US-201514807206-A
Country	US
Kind code	A1
Filing date	Jul 23, 2015
Priority date	Feb 16, 2015
Publication date	Aug 18, 2016
Grant date	—

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.

First claim

What is claimed is:

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.

Assignees

• Samsung Display Co Ltd

Inventors

• Kang Sung Ku

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0445

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

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F3/044

  by capacitive means · CPC title