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Projection device and projection method thereof

A projection device and projection technology, applied in projection devices, optics, instruments, etc., can solve the problems of high cost and low light efficiency of transmissive LCD panels, and achieve the effect of improving display quality, contrast and gray scale accuracy

Active Publication Date: 2018-01-05
HIMAX DISPLAY INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The light efficiency of transmissive LCD panels is lower than that of LCOS panels, and the cost of DMD is greater than that of LCOS panels

Method used

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  • Projection device and projection method thereof
  • Projection device and projection method thereof
  • Projection device and projection method thereof

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Embodiment Construction

[0035] figure 1 It is a schematic diagram of a projection device according to an embodiment of the present invention, please refer to figure 1 . The projection device 100 includes a light valve 102 , a lens 104 , a temperature sensing unit 106 and a control unit 108 , wherein the control unit 108 is coupled to the light valve 102 and the temperature sensing unit 106 . The light valve 102 can be used to reflect the illumination beam L1 and convert the illumination beam L1 into an image beam L2, wherein the light valve 102 can be, for example, a digital micro-mirror device (digital micro-mirror device, DMD) or a liquid crystal on silicon panel (liquid-crystal -on-silicon panel, LCOS panel), but not limited to this. The lens 104 can be configured on the transmission path of the image beam L2 to project the image beam L2 to the screen 110 to display the image frame on the screen 110 . The temperature sensing unit 106 can sense the temperature of the light valve 102 to generate ...

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Abstract

The present invention provides a projection device and a projection method thereof. A control unit regulates gray-sale features of a light valve according to temperature of the light valve, so that contrast and gray-scale accuracy of image frames can be improved.

Description

technical field [0001] The invention relates to a display device, and in particular to a projection device and its image optimization. Background technique [0002] In the display field of display devices, various types of spatial light modulators (spatial light modulators) are used to convert illumination beams into image beams, such as transmissive liquid crystal display (liquid crystal display, LCD) panels, liquid crystal silicon substrates, etc. (liquid-crystal-on-silicon, LCOS) panel or digital micromirror device (digital micro-mirror device, DMD). The light efficiency of the transmissive LCD panel is lower than that of the LCOS panel, and the cost of the DMD is greater than that of the LCOS panel. [0003] Generally speaking, in a projector using an LCOS panel, by reflecting a polarized light beam to the LCOS panel. Then, the LCOS panel modulates the polarized light beams into polarized light beams with other polarization states, and reflects the polarized light beam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00G03B21/14G09G3/36
Inventor 林淇文范姜冠旭李悦荣钟茂榕黄贯中
Owner HIMAX DISPLAY INC
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