DISPLAY DEVICE

• US 20120327005A1
• Filed: 02/16/2011
• Published: 12/27/2012
• Est. Priority Date: 04/01/2010
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Hamada, Hiroshi, Takatani, Tomoo, Imai, Akira
• Granted Patent: US 8,884,922 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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: H04N 13/315 the parallax barriers being time-variant

Abstract

A display device includes a touch panel and displays stereoscopic images with reducing its thickness and weight. The display device includes a liquid crystal display panel 20, a switching liquid crystal panel 30 and a touch panel 50. The switching liquid crystal panel 30 is provided on a display surface side of the display panel 20 and switches a display mode between two-dimensional display and three-dimensional display. The touch panel 50 is provided on the display surface side of the display panel 20. The touch panel 50 and the switching liquid crystal panel 30 commonly include one common board 32 and are configured as one component. A touch panel transparent electrode 51 and a switching liquid crystal panel transparent electrode 33 are provided on the common board 32. The switching liquid crystal panel transparent electrode 33 applies a voltage to liquid crystals of the switching liquid crystal panel 30.

Claims

1. A display device comprising:

a display panel having a display surface;

a touch panel provided on a display surface side of the display panel; and

a parallax barrier configured to enable three-dimensional display, wherein;

at least two of the display panel, the touch panel and the parallax barrier are configured as one component.

6. The display device according to claim 1, wherein the display panel is a liquid crystal display panel using liquid crystals.

2. A display device comprising:

a display panel having a display surface;

a switching liquid crystal panel provided on a display surface side of the display panel and configured to switch a display mode between a two-dimensional display and a three-dimensional display;

a touch panel provided on the display surface side of the display panel;

a common board commonly included in the touch panel and the switching liquid crystal panel and configured to form the touch panel and the switching liquid crystal panel as one component;

a touch panel transparent electrode arranged on the common board; and

a switching liquid crystal transparent electrode arranged on the common board and configured to apply a voltage to liquid crystals in the switching liquid crystal panel.

3. The display device according to claim 2, wherein:

the touch panel transparent electrode includes;

a first touch panel transparent electrode extending in one direction; and

a second touch panel transparent electrode extending in another direction crossing the one direction, and the switching liquid crystal panel transparent electrode includes;

a first switching liquid crystal panel transparent electrode extending in the one direction; and

a second switching liquid crystal panel transparent electrode extending in the other direction, wherein;

the first touch panel transparent electrode and the first switching liquid crystal panel transparent electrode are configured with a common electrode that is provided on the display panel side of the common board.

4. The display device according to claim 3, wherein the second touch panel transparent electrode is provided on a side of the common board opposite to the display panel and the common electrode.

5. The display device according to claim 2, wherein:

the touch panel transparent electrode is provided on a side of the common board opposite to the display panel; and

the switching liquid crystal panel transparent electrode is provided on the display side of the common board.