Position:As development of science and technology and indication demand, the application of big screen system in all trades and professions is increasing also, to big screen system, indication technology basically has the following kinds:
CRT demonstrates a skill. Use a CRT (CRT) big screen of the technology is umbriferous indication screen, this kind of technology also is the technology of big screen projector that uses the earliest. The indication core of umbriferous indication technology mixes CRT brightness glow all is finished by CRT, as a result of the contradiction of the brightness of CRT umbriferous technology and resolution, limitted the scope that its continue to develop. And CRT umbriferous technology should use 3 umbriferous guns respectively (R, G, B) show respectively gather together next, make umbriferous installation is debugged very difficult, CRT umbriferous technology basically is replaced by the technical place such as LCD, DLP and new-style LCOS now.
LCD demonstrates a skill. This technology is rise from 90 time, by the umbriferous technology of day trade dominant, the development of its technology is more and more mature also, perfect with each passing day, develop liquid crystal of present polycrystalline silicon trends from liquid crystal of monocrystalline silicon static state, its technology had great progress, basically use at desktop projector, business affairs at present umbriferous, and umbriferous joining together displays the big screen of grain wall application.
DLP pure digitlization demonstrates a skill. DLP (digital light is handled) it is to be in umbriferous a kind of with indication message respect revolutionary technology, according to American Texas Instruments (TI) the digital small lens that the company develops is not had (DMD) design and become, innovation goes indication number to inspect the last loop that resembles message, it uses emissive light to become like the principle, implementation image handles complete digitlization, have stability reliable, safeguard convenient, brightness the characteristic with tall, indication flowing, exquisite, exact image, DLP umbriferous technology is used extensively at desktop projector, business affairs projector, cinema to show, especially in big screen umbriferous joining together shows a field, it handles leadership position all the time.
LCOS demonstrates a skill. It is a kind of when develop on LCD technology base in last few years new indication technology, the advantage with the biggest LCOS is resolution can very tall, carrying model on the application of information equipment, this advantage is more outstanding. Defect is modular group make Cheng relatively trival, control of rate of fine of each stage of production is not easy, cost hard competitive. Can stay in the specific utility that needs high resolution only at present, be like liquid crystal projector.
GLV demonstrates a skill. The principle of GLV technology and heart appearance (TI) the unit of digital small lens of development (DMD) chip is a little similar, also be with principle of personal computer report (Micro-Electromechanical System; MEM) for the foundation, recumbent light reflex will decide to be shown videoly; And the light of GLV reflexes component, it is by a composition of place of zonal reflex face, according to the voltage that offers on substrate, the fluctuation that has dinky range is mobile, the reflex that decides the light and slant fold, reflex the freeboard switch speed of device plus its, in order to reach video second birth. This technology still is in phase of research and development, did not form an industry.
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