The current mainstream smart projectors use DLP technology and smart projection using LCD technology. So what do you know about DLP and LCD technology?
DLP is the abbreviation of "Digital Light Processing", which is digital light processing. This technique requires that the image signal be processed digitally before the light is projected. The implementation of this technology requires the DMD (Digital Micromirror Device) developed by TI (Texas Instruments) to realize visual digital information display.
LCD (abbreviation for Liquid Crystal Display), which is a liquid crystal display. The LCD is constructed by placing a liquid crystal cell between two parallel glass substrates, a TFT (thin film transistor) on the lower substrate glass, and a color filter on the upper substrate glass to control the liquid crystal molecules through the signal and voltage change on the TFT. The direction of rotation is achieved so as to achieve the purpose of controlling whether the polarized light of each pixel is emitted or not.
In contrast, the color separation of a monolithic DLP projector is realized by a color separation wheel. Three-color light uses the same micro-mirror to modulate reflection. Therefore, the three-color light arrives at the screen in a time-sharing manner due to the separation wheel rotation speed and the micro-mirror deflection speed. The limitations, color reproduction than LCD smart projector has a certain gap. Especially in the display of dynamic video images, the picture refresh rate is fast, and the modulation speed of each color is required to be very high. LCD technology will have more advantages than DLP technology.
Theoretically speaking, the biggest benefit of LCD projectors is that the three primary colors of red, green, and blue are completed by three separate liquid crystal panels. The brightness and contrast of each color can be individually controlled, and three colors of light can reach the screen at the same time. , so you can truly reproduce a variety of colors.
Since most DLP projectors use a monolithic structure, the optical structure is also very simple, enabling smaller size and lighter weight. Thanks to the reflection principle, DLP Smart Projection can achieve a higher level of black and white contrast. The LCD consists of three colors of light converged into one pixel, and the single-chip DLP projector three-color light is reflected by the same micromirror to the same pixel, so there is no convergence problem. Therefore, DLP smart projection pixel edge will not appear some flash and shadow in the LCD, so when showing some fine lines and small text, DLP projector is more clear than LCD projector, black and white is more pure, grayscale The level is more abundant.
On the other hand, each pixel of the liquid crystal panel of the LCD smart projection has a corresponding optical switch transistor, there is a certain distance between the transistors, and the transistor does not transmit light, resulting in a certain gap in the pixel. The DLP intelligent projection can control the transistor on the back of the micromirror, and it will not block the propagation of light. The gap between the micromirrors is very small. Therefore, the pixel gap of the LCD smart projection will be larger than the gap of the DLP smart microprojection, especially in the low resolution products.
DLP is the abbreviation of "Digital Light Processing", which is digital light processing. This technique requires that the image signal be processed digitally before the light is projected. The implementation of this technology requires the DMD (Digital Micromirror Device) developed by TI (Texas Instruments) to realize visual digital information display.
LCD (abbreviation for Liquid Crystal Display), which is a liquid crystal display. The LCD is constructed by placing a liquid crystal cell between two parallel glass substrates, a TFT (thin film transistor) on the lower substrate glass, and a color filter on the upper substrate glass to control the liquid crystal molecules through the signal and voltage change on the TFT. The direction of rotation is achieved so as to achieve the purpose of controlling whether the polarized light of each pixel is emitted or not.
In contrast, the color separation of a monolithic DLP projector is realized by a color separation wheel. Three-color light uses the same micro-mirror to modulate reflection. Therefore, the three-color light arrives at the screen in a time-sharing manner due to the separation wheel rotation speed and the micro-mirror deflection speed. The limitations, color reproduction than LCD smart projector has a certain gap. Especially in the display of dynamic video images, the picture refresh rate is fast, and the modulation speed of each color is required to be very high. LCD technology will have more advantages than DLP technology.
Theoretically speaking, the biggest benefit of LCD projectors is that the three primary colors of red, green, and blue are completed by three separate liquid crystal panels. The brightness and contrast of each color can be individually controlled, and three colors of light can reach the screen at the same time. , so you can truly reproduce a variety of colors.
Since most DLP projectors use a monolithic structure, the optical structure is also very simple, enabling smaller size and lighter weight. Thanks to the reflection principle, DLP Smart Projection can achieve a higher level of black and white contrast. The LCD consists of three colors of light converged into one pixel, and the single-chip DLP projector three-color light is reflected by the same micromirror to the same pixel, so there is no convergence problem. Therefore, DLP smart projection pixel edge will not appear some flash and shadow in the LCD, so when showing some fine lines and small text, DLP projector is more clear than LCD projector, black and white is more pure, grayscale The level is more abundant.
On the other hand, each pixel of the liquid crystal panel of the LCD smart projection has a corresponding optical switch transistor, there is a certain distance between the transistors, and the transistor does not transmit light, resulting in a certain gap in the pixel. The DLP intelligent projection can control the transistor on the back of the micromirror, and it will not block the propagation of light. The gap between the micromirrors is very small. Therefore, the pixel gap of the LCD smart projection will be larger than the gap of the DLP smart microprojection, especially in the low resolution products.
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