Introduction

Numerous types of display exist nowadays, these generally being optoelectronic systems that include a screen on which, for example, alphanumeric data can be displayed in the form of luminous characters. Typically, displays find wide use in calculators, portable electronic devices and video units. In general, the definition of the screen’s pixels, i.e., the luminous dots of the screen, can become difficult with a curved display. In fact, it is possible that the light irradiated by a single pixel mixes with that of one or more adjacent pixels. Consequently, the observer perceives the pixels as being blurred.

Technical features

A curved display that includes plurality of light sources and a plurality of waveguides has been designed, where the optical cores have an elongated shape, and are coupled on one side to a corresponding light source (e.g., LED diode of RGB type, LCD, OLED) and on the other to a screen. To overcome the aforementioned limitations, each light beam emitted from the source, propagates in a guided manner within the optical core. The display also includes an optical separation element, formed of a plurality of cavities housing a corresponding optical core. The optical separation element absorbs visible light and laterally surrounds at least the first end of each optical core.

Possible Applications

• Optical display;
• Curved display
• Optoelectronic systems.

Advantages

• Allows defining the pixels with precision, even in the presence of screen curvatures;
• Display enables determining the shape of the luminous dots without resorting to lenses;
• Each guide optical core guide module can be manufactured inexpensively through the use of a 3D printer;
• Compact dimensions compared, for example, to so-called back-projection systems.