Laser television

Abstract

The invention discloses a laser television, which comprises an enclosure, a television screen, an optical engine positioned in the enclosure, a reflector and a television core circuit, wherein the optical engine is a laser optical engine; a red semiconductor laser device, a green semiconductor laser device and a blue semiconductor laser device are used as light sources of the optical engine; laser emitted by the red, green and blue semiconductor laser devices is gathered into a color combining prism through a beam processing module, a polarizing beam splitter and a liquid crystal on-silicon (LCOS) chip respectively, and the laser is combined into single laser rays through the color combining prism; laser beams containing all image information are sent to a projection lens through an optical cable, and the projection lens projects the images to the television screen through the reflector; and the laser optical engine is also provided with a driving circuit and a feedback control modulefor increasing image brightness detection and signal feedback functions in circuit drive to control the power of the laser devices at any moment. Compared with the prior art, the laser television hashigh definition, good color effect, long service life and low cost, and can be provided with a large screen or a super-large screen.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a laser TV. Background technique [0002] Current large-screen rear-projection TVs, plasma TVs, flat-panel TVs, and high-definition TVs are bulky and consume high energy. The color of the picture is a mixture of three primary colors, not true color. The laser is 100% monochromatic light, and the red, green, and blue lasers can be modulated separately by digital signals. Because the color spectrum is pure, the color effect is very ideal. Existing TV technology can actually only display 30% of the colors visible to the naked eye, while laser TV allows you to see 70% of the visible colors. The room temperature life of laser transistors can generally reach 100,000 hours, and the room temperature life calculated by high-temperature aging tests can reach one million hours, so it is a long-life and high-reliability product. At present, German LDT, South Korean Samsung, Ja...

AI Technical Summary

Problems solved by technology

This kind of laser TV using scanning method has complex circuits and the screen size is affected. It is impossible to make a large-screen or super-large-screen TV, and the cost is high.

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