Two-piece LCD projector

Abstract

Provided is an LCD projector. The LCD projector includes including a first LCD (liquid crystal display) light valve module and a second LCD light valve module. The first LCD light valve module simultaneously provides a red field image and blue field image in space, and the second LCD light valve module provides complete green field image. The red field pixel of the first LCD light valve module and the corresponding pixel of the second LCD light valve module coincide in space to generate a yellow image. The blue field pixel of the first LCD light valve module and the corresponding pixel of the second LCD light valve module are coincided in space to generate a cyan image. White and full-color images are reproduced by yellow and cyan lights.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Chinese Patent Application No. 201910490596.0 with a filing date of Jun. 5, 2019. The content of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference.TECHNICAL FIELD[0002]The disclosure relates to a two-piece LCD (liquid crystal display) projector.BACKGROUND OF THE PRESENT INVENTION[0003]For a long time, people habitually classify projectors based on characteristics of a light valve, one of the most core devices of the projector in general, such as a DLP (digital light processing) projector, an LCD (liquid crystal display) projector, an LCOS (liquid crystal on silicon) projector, which are common at present.[0004]The common LCD projectors refer to having two characteristics: the light valve adopts an LCD technology (for distinguishing DLP) and is of a transmission type (for distinguishing LCOS). The LCD projector generally has two principles...

AI Technical Summary

Benefits of technology

[0010]The technical problem to be solved by the disclosure is to provide a two-piece LCD projector and an projection method, aiming at the fundamental technical problem that there serious contradiction between the improvement of the CF efficiency of the LCD light valve and the obtained achievement due to the low CF efficiency of the LCD light valve of the single LCD projector adopting the existing LCD light valve technology, so that the energy efficiency ratio of the projector is greatly improved, and meanwhile color effect, contrast and other Indexes are not scarified. The two-piece LCD projector is low in cost and high in cost performance, and has no higher requirements on the manufacturing industry chains of the most upstream CF and TFT of the existing LCD light valve module.

[0016]The disclosure has the beneficial effects that by setting the first and second LCD light valves, the theoretical CF efficiency of the first LCD light valve module is increased from 33.3% of the original full-color LCD light valve module to 50% when being illuminated by the red and blue lights at the same time; the CF efficiency of the second LCD light valve module is increased from 33.3% of the original full-color LCD light valve module to 100% under the irradiation of green light, thereby significantly improving the energy conversion efficiency of the projector, at the same time, its technical platform is still the same as the single LCD projector, and has obvious advantages of simple structure, high cost performance and the like; there are no higher technology and equipment requirements for the upstream manufacturing chain of the existing industrial chain, so the two-piece LCD projector has great practicability and complete feasibility.

Problems solved by technology

The two-piece LCD projector is low in cost and high in cost performance, and has no higher requirements on the manufacturing industry chains of the most upstream CF and TFT of the existing LCD light valve module.

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