TACTILE AND VISUAL DISPLAY DEVICE

• US 20080129705A1
• Filed: 10/31/2007
• Published: 06/05/2008
• Est. Priority Date: 12/05/2006
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: LEE, Jin Ho, KIM, Seong Hyun, YANG, Yong Suk
• Granted Patent: US 8,212,783 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user

Abstract

Provided is a tactile and visual display device enabling visual information and tactile information to be simultaneously sensed. The tactile and visual display device includes: a display unit comprising a plurality of scan lines, a plurality of data lines and a plurality of pixels; a tactile sensation generator mounted over the display unit, transmitting light emitted from the pixels, comprising a transistor electrically connecting a plurality of corresponding pixels formed to correspond to the pixels with adjacent corresponding pixels, and generating an electrostatic force and a magnetostatic force; and a sensor in contact with the corresponding pixels to sense the generated electrostatic force or magnetostatic force. Accordingly, the texture of an image displayed on a display is provided as tactile information using an electrostatic force and a magnetostatic force, so that tactile information as well as visual information of the conventional display may be simultaneously provided.

Claims

1. A tactile and visual display device comprising:

a display unit comprising a plurality of scan lines, a plurality of data lines and a plurality of pixels;

a tactile sensation generator mounted over the display unit, transmitting light emitted from the pixels, comprising a transistor electrically connecting a plurality of corresponding pixels formed to correspond to the pixels with adjacent corresponding pixels, and generating an electrostatic force or a magnetostatic force; and

a sensor in contact with the corresponding pixels to sense the electrostatic force or magnetostatic force generated by the tactile sensation generator.

2. The device of claim 1, wherein the corresponding pixels of the tactile sensation generator comprise:

a transparent electrode transmitting light emitted from the display unit;

a plurality of address lines and a plurality of scan lines electrically connected to the transparent electrode;

a plurality of transistors transmitting a signal applied to the address line in response to a scan signal applied to the scan line; and

a capacitor storing a voltage corresponding to the transmitted signal.

3. The device of claim 1, wherein the sensor comprises a pad portion comprising sensing pixels corresponding to the corresponding pixels and a pad connector having one end electrically connected to the pad portion and the other end electrically connected to the tactile sensation generator.

4. The device of claim 3, wherein the sensing pixels use a metal material or a conductive material having transparency to sense an electrostatic force.

5. The device of claim 4, wherein the sensing pixels use one of Au, Al, Fe, Ag, Pt, ITO and IZO.

6. The device of claim 3, wherein the sensing pixels use a permanent magnet to sense a magnetostatic force.

7. The device of claim 3, wherein the sensing pixels use a metallic permanent magnet to sense an electric force and a magnetic force.

8. The device of claim 3, wherein the pad portion uses a material having elasticity and ductility.

9. The device of claim 8, wherein the material having elasticity and ductility comprises rubber, polymer, paper, natural fiber and synthetic fiber.

10. The device of claim 1, wherein the transistor connecting each of the corresponding pixels is driven to form rotating current, so that a magnetic force is generated and elasticity and viscosity are represented.