Laser TV full-color generation method and device in 3 LCD mode

A laser TV, color light technology, applied in the direction of TV, color TV, color TV components, etc., to achieve the effect of simple structure

Inactive Publication Date: 2016-08-31
NANJING PANDA ELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the low-cost advantage of laser front projection is there, the advantage of color is challenged by new technologies

Method used

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  • Laser TV full-color generation method and device in 3 LCD mode
  • Laser TV full-color generation method and device in 3 LCD mode

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Embodiment Construction

[0012] Light path part such as figure 1 Shown; the first to the third dichroic mirrors 1, 2, 3, the phosphor wheel 13, the lens 4, 5, 6 of the light-gathering effect and the light-transmitting effect, the reflection mirror 7 reflecting blue light, and the reflection mirror 7-1 reflection Red light, large reflective screen 7-2, light-combining prism 8, polarizers 9, 9-1, 9-2; liquid crystal panels 10, 10-1, 10-2 corresponding to the polarizers respectively; the first blue laser 11. The second blue laser 12; the ultra-short-distance lens 14, the light from the ultra-short-distance lens reaches the large reflective screen 7-2; the third dichroic mirror reflects yellow light. B, G, and R represent schematic diagrams of three-color light, and Y represents yellow light.

[0013] Optical path description:

[0014] 1) The blue laser 11 (or a combination of several lasers) emits blue laser light, which is reflected by the first dichroic mirror 1 to the phosphor wheel 13 to excite yel...

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Abstract

The present invention provides a laser TV full-color generation method and device in a 3 LCD mode. The method comprises: blue laser generated by a set of blue lasers bombs a phosphor wheel to generate yellow light; the yellow light mixes with another set of blue laser to form pure white light; and the combined standard white light forms red, green and blue light sources through the color separation of combination prisms, the three groups of light sources are respectively taken as the backlights of 3 sheets of LCDs which are configured to respectively display three primary color signals of corresponding image signals, and the three primary color signals emitted by the 3 sheets of LCDs are projected to the screen in an ultra short distance through prism combination to show a whole image.

Description

1. Technical field [0001] The invention relates to a large-screen projection display television, which is a development direction of an ultra-large-screen intelligent television and a new realization scheme of a laser projection television. 2. Background technology [0002] In the current implementation of laser front projection TV, the traditional way is to use LCOS or DLP (reflective microLCD projection technology or digital light processing, that is to say, this technology first digitally processes the image signal, and then converts the light It is projected out. It is based on the digital micromirror device (DMD) developed by TI (Texas Instruments). With the large-screen LCD, especially the industrialization of large-screen OLED, people's pursuit of color expression is more intense. Although the low-cost advantage of laser front projection exists, the advantage of color is challenged by new technologies. Changing the display effect of laser TV has become the driving f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31H04N5/64
CPCH04N5/64H04N9/3141H04N9/3161
Inventor 孙润宇
Owner NANJING PANDA ELECTRONICS
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