Haptic actuating touch screen

Patent metadata

Field	Value
Publication number	US-9377908-B2
Application number	US-201313827948-A
Country	US
Kind code	B2
Filing date	Mar 14, 2013
Priority date	Mar 26, 2012
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

Provided is a touch screen for generating a haptic sense that may minimize a structure added for haptic generation by simultaneously employing a single electrode layer that constitutes an existing touch panel as an electrode layer for transferring the haptic sense. A touch screen for generating a haptic sense according to an exemplary embodiment of the present disclosure includes a touch panel including at least one substrate, each formed with at least one electrode, and an additional electrode to generate the haptic sense on a portion touched on the touch panel using an electrostatic force that occurs between the additional electrode and a predetermined electrode among the at least one electrode.

First claim

What is claimed is:

1. A touch screen for generating a haptic sense, the touch screen comprising:
a first substrate;
a second substrate;
a first electrode disposed on a bottom surface of the first substrate;
a second electrode disposed on a top surface of the second substrate; and
a third electrode disposed below the second substrate,
wherein, when the portion of the first substrate is touched and the first electrode contacts the second electrode, the second substrate is bent by an electrostatic force originating between the second electrode and the third electrode.

2. The touch screen of claim 1 , wherein the third electrode is disposed on an upper substrate of a display panel, and the second substrate is disposed on the third electrode.

3. The touch screen of claim 1 , wherein the second substrate is included in a resistive or an electrostatic capacitive touch panel.

4. A touch screen for generating a haptic sense, the touch screen comprising:
a first substrate and a second substrate;
a first electrode and a second electrode disposed on a bottom surface of the first substrate and a top surface of the second substrate, respectively;
a spacer disposed between the first electrode and the second electrode to maintain a predetermined interval between the first electrode and the second electrode;
a third electrode disposed below the second substrate, the third electrode configured to generate the haptic sense on a touched portion of the first substrate by exerting an electrostatic force on the second electrode; and
an adhesive layer attaching the second substrate to the third electrode so that the third electrode is positioned below and spaced apart from the second substrate by a predetermined interval,
wherein, when the portion of the first substrate is touched and the first electrode contacts the second electrode, the second substrate is bent by electrostatic force originating between the second electrode and the third electrode.

5. The touch screen of claim 4 , wherein a space in which the second substrate is capable of vibrating is formed by the adhesive layer.

6. The touch screen of claim 4 , wherein the first substrate is comprised of a flexible film, the second substrate is using plastic, glass, or polymer, and the first electrode and the second electrode are comprised of a transparent conductive material.

7. The touch screen of claim 4 , wherein the third electrode is disposed on an upper substrate of a display panel.

8. A touch screen for generating a haptic sense, the touch screen comprising:
a first substrate and a second substrate;
a first electrode disposed between the first substrate and the second substrate;
a second electrode disposed on a bottom surface of the second substrate;
a third electrode disposed below the second electrode, the third electrode configured to generate the haptic sense on a touched portion of the first substrate by exerting an electrostatic force on the first electrode or the second electrode;
an insulating layer disposed between the second electrode and the third electrode; and
an adhesive layer attaching a portion between the insulating layer and any one of the second electrode and the third electrode, so that the third electrode is below and spaced apart from the second electrode by a predetermined interval,
wherein, when the portion of the first substrate is touched and the first electrode contacts the second electrode, the second substrate is bent by the electrostatic force originating between the second electrode and the third electrode.

9. The touch screen of claim 8 , wherein the insulating layer is disposed on a top surface of the third electrode, and the adhesive layer is disposed between the second electrode and the insulating layer.

10. The touch screen of claim 8 , wherein the first electrode or the second electrode is disposed in a predetermined pattern.

11. The touch screen of claim 8 , wherein the insulating layer is disposed as a dot spacer of a touch panel.

12. The touch screen of claim 8 , wherein the third electrode is disposed on an upper substrate of a display panel.

Assignees

• Korea Electronics Telecomm

Inventors

• Park Suntak
• Kyung Ki Uk
• Lee Jong-Uk
• Kim Young Sung
• Yun Sung Ryul

Classifications

• G06F3/045

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/016 Primary

  Input arrangements with force or tactile feedback as computer generated output to the user · 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

• G06F3/0443

  using a single layer of sensing electrodes · CPC title