Optical display device with switchable visual angle

Abstract

It is an optics display apparatus with switching perspective and its method, which comprises a display panel, one light interference elements, one light conductive element and a switch. The display panel is to display an image; the light interference element is aligned on one side of the display panel to provide interference light; the light conductive element is adjacent to the display panel to control the interference light direction and generate an image interference area in the visible area; the switch is to switch the interference light.

Description

technical field [0001] The present invention relates to an optical display device with a switchable viewing angle, and in particular to an optical display device using a light interference component in a flat-panel display to affect the viewing angle of the optical display device. Background technique [0002] Users of flat-panel displays wish to view the screen of the display only in a specific area or viewing angle, not in this specific area or viewing angle. people will not be able to see what is displayed on the monitor. In this regard, many related technologies are currently under development. For example, the following methods use specific technical features to achieve the display content of the display in a specific area or viewing angle: [0003] 1. In Toshiba's U.S. patent announcement No. US6445434B2, an alignment layer (Alignment layer) technology is disclosed, which uses the difference in the rubbing direction (rubbing direction) of interconnected pixels on the ...

AI Technical Summary

Problems solved by technology

[0003] 1. In Toshiba's U.S. patent announcement No. US6445434B2, an alignment layer (Alignment layer) technology is disclosed, which uses the difference in the rubbing direction (rubbing direction) of interconnected pixels on the alignment layer to enable the observer to observe at a large viewing angle. The image is greatly blurred due to grayscale inversion, and the display content of the screen cannot be observed from a specific viewing angle in front of the screen

But the disadvantage of the above technique is that this layer must be removed when the narrow viewing angle is not needed

[0004] 2. In Rockwell's U.S. Patent No. US6239853B1, a structure is disclosed to cause light to have a specific direction of light transmission in order to achieve a narrow viewing angle, but the disadvantage is as described in Toshiba (US6445434B2): when a narrow viewing angle is not required, the Removing this layer will, among other things, darken the screen

[0005] 3. In US Patent No. US6398370B1 of 3M Company, a structure such as a shutter mode is provided. When it is located at a narrow viewing angle, the image can be observed, but the disadvantage is also: when the narrow viewing angle is not required, this layer of structure must be removed.

Under this requirement, the user must remove or add this layer of structure to achieve the purpose of switching the display angle, so it is quite troublesome to use

Images