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Projection display apparatus

A projection display and light guide plate technology, applied in projection devices, light guides, optics, etc., can solve problems such as ghost images changing display quality

Active Publication Date: 2016-12-07
HIMAX DISPLAY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current projectors on the market can display ghosting, which can alter display quality

Method used

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  • Projection display apparatus
  • Projection display apparatus
  • Projection display apparatus

Examples

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Embodiment Construction

[0017] figure 1 It is a schematic diagram illustrating a projection display device 100 provided by an embodiment of the present invention. The projection display device 100 may include a light source 102 , a reflective light modulator 104 , a light guide plate 106 , a polarizer 108 , and an optical component 110 for transmitting image light. Applications of the projection display device 100 include, for example, providing a near-eye display function in a head-mounted system, or projecting actual images on a large screen in a general image projector.

[0018] The light source 102 can emit illumination light S having a first polarization state, such as S-polarized light. The light source 102 may include a light emitting device 112 and a reflective polarizer 114 (also referred to as "reflective polarizer"). The light emitting device 112 may be composed of one or more light emitting diodes to emit light of one or more colors. According to an embodiment, the light emitting devic...

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Abstract

A projection display apparatus includes a light source (112) configured to emit a first light, a reflective light modulator (104) configured to modulate the first light to form a second light conveying a rendered image, a polarizer (108) and a light guide plate (106). The light guide plate can include a plurality of optical elements (146) embedded in the thickness of the light guide plate or provided on an outer surface of the light guide plate. An illuminating light entering the light guide plate can be redirected toward the light modulator by reflection at the grooves or optical elements. Moreover, an image light from the light modulator can travel through the light guide plate to the polarizer.

Description

technical field [0001] The invention relates to a projection display device. Background technique [0002] An image projector, such as an image projector used in a head-mounted system, generally includes a liquid crystal panel and an illumination device, wherein the illumination device emits light to the liquid crystal panel. The liquid crystal panel can adjust the incident light to generate an image, and then transmit the image through the projection device so as to be displayed to the user for viewing. However, current projectors on the market can display ghost images, which can alter the display quality. [0003] In view of this, there is currently a need for an improved projection device in order to improve the above-mentioned deficiencies. Contents of the invention [0004] The invention describes a projection display device that can reduce thickness and provide better image quality. According to an embodiment, a projection display device includes: a light source c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/00
CPCG02B6/0036G02B6/0038G02B6/0056G02B5/30G02B2027/012G02B27/0172G02B6/10G03B21/20
Inventor 陈冠宇李悦荣
Owner HIMAX DISPLAY INC