What is the difference between an LCD projector and a digital optical processor projector?

DLP is imaging by color wheel.

The LCD is imaged through three liquid crystal wafers.

DLP's projector has a higher brightness, which is suitable for meetings, documents, etc., because its gray scale is relatively high, it is brighter, and the monofilament color reproduction is relatively weak, because a part of the color is sacrificed to increase its white brightness.

LCD projectors are more colorful, but the effect is not as good as DLP when reading documents.

The technology of LCD projectors is transmissive projection technology, which is currently the most mature. The color of the projection picture is real and vivid, the color saturation is high, the light utilization efficiency is very high, the LCD projector has a higher ANSI lumen light output than the DLP projector with the same wattage light source lamp, and the current market high lumen projector is mainly based on LCD projector. The downside is that the black level performance is not very good, and the contrast ratio is generally 500:

Hovering around 1, there are now more than 10,000:1. The pixel structure of the projected picture can be clearly seen.

The technology of DLP projector is reflective projection technology, which is now developing rapidly projection technology. Its use makes the gray level of the projection image, the image signal noise ratio greatly improved, the picture quality is delicate and stable, especially in the **dynamic** image smooth, no pixel structure, the image is natural, and the digital image is restored real and accurate. Due to the consideration of cost and body size, most of the current DLP projectors are designed with a single DMD chip, so they are slightly inferior to LCD projectors in the restoration of image color, and the colors are not bright and vivid enough.

1. Different sizes: projectors.

The LCD screen is smaller than the ordinary LCD screen;

2. Different resolutions: The LCD screen of the projector has a higher resolution than the ordinary LCD screen of Dongliang;

3. Light transmittance.

Different: Generally speaking, the light transmittance of the LCD screen of the projector is higher than that of the ordinary LCD screen.

Resolution is a very important performance indicator. It refers to the number of points that can be displayed horizontally and vertically on the screen, and the higher the resolution, the more information can be contained on the same screen.

For a CRT that can support 1280x1024 resolution, whether it is 320x240 or 1280x1024 resolution, it can be perfectly represented (because the electron beam can be flexibly adjusted).

But this is not the case for LCDs. The maximum resolution of an LCD is its true resolution, which is the best resolution. If the set resolution is less than the real resolution (for example, a 15-inch LCD has a true resolution of 1024x768, compared to 800x600 in Windows), there will be two display methods.

One is the center display, only the 800x600 dots in the middle of the LCD will be displayed, and the other dots that are not used will not emit light, keeping a dark background, and it looks like the picture is centered and reduced.

The other is to expand the display, which will use every pixel on the screen, but because the pixels are easily distorted, it will have a certain impact on the display effect. Therefore, in any case, when choosing an LCD, it is important to pay attention to the resolution, not the larger the better, but the appropriate and easy to use.

In the same way, liquid crystal molecules can change the polarization direction of light, so that some pixels transmit light (or transmit more light) and some pixels do not transmit light (or transmit less light).

The difference is that the internal light source of the projector is usually a halogen lamp. The halogen lamp is divided into red, green and blue light after passing through the beamsplitter, and the pixels of the three-color light are bright and dark after passing through the respective LCD LCD panel, and then the three beams of light are combined into one beam and illuminated through the lens.

Ordinary LCD is the light emitted by the LED backlight module, which becomes polarized light through the polarizer, and then passes through the liquid crystal molecule, and the liquid crystal also adjusts the brightness and darkness of each pixel.

Projectors are divided into three types according to the principle: single LCD, 3LCD and DLP basically have something to do with ordinary LCD screen wood.

The LCD screen used in a single LCD projector should be small in size, high in resolution, and most importantly, high in light transmittance. However, in principle, the higher the resolution, the smaller the dot distance, the lower the light transmittance. Of course, compared with ordinary screens, the LCD screen of the projector has no backlight.

Now there are some inches on the X treasure,7The screen is used for DIY projection, and the effect is OK,The size is not large, but heat dissipation and noise are a problem。

Projector, the person and the projector are distributed on the same side of the screen, and the human eye relies on the reflected light of the projector on the screen to ** the image. LED display, light-emitting diode is the use of the one-way conductivity of the diode, with electronic circuits to control its color and grayscale, to achieve the first display. [Welcome to click for more information].

The advantage of the projector is that the screen is very large, and the image can be almost any size. Relatively low, simple structure, easy to achieve high resolution, multi** input. The disadvantage is that it is greatly affected by ambient light, low contrast, and poor integration.

The advantages of LED display are high brightness, active light-emitting equipment, not affected by the environment, long service life, and individual pixel damage can be maintained and does not affect the overall situation. Brilliant colors and large viewing angles. There is no loss of stitching images, and it can be used as a large screen of several square meters.

It is a true pure digital display device.

Absen Group is the world's leading provider of true LED display applications and services. The LED display industry brand advocate the whole machine, set an example to define the quality standards of LED displays, and accelerate the process of legal compliance in the industry. Adhere to independent innovation, and have won various intellectual property honors, including more than 140 invention patents.