The difference between LCD and LED advertising machine
Author:Lu Jiamin Time:2021-10-14 08:01 Browse(81)
1. In terms of display, LED brightness is relatively strong, far view is very clear, suitable for outdoor
1. In the aspect of display, the brightness of LED is relatively strong, and it is very clear in the far view, which is suitable for outdoor

The difference between LCD and LED advertising machine


2. The brightness of LCD is not as high as that of LED, and it is very clear in the near view, which is suitable for indoor.


3. The display effect of LED is not as strong as that of LCD.
LCD can achieve high definition.


4 What's more important is that led is thinner than LCD.
it's more convenient to realize all kinds of extreme structure and appearance requirements.

baoqianli advertising machine rental answers for you. LED is the abbreviation of light emitting diode.

LED applications can be divided into two categories: one is led single tube applications.
including backlight LED, infrared LED, etc; At present, there is still a certain gap between China and the world in the manufacturing of LED basic materials, but as far as LED display is concerned, China's design and production technology level is basically in line with the international level.

LED display is a display device composed of LED arrays.
it adopts low voltage scanning drive.
it has the following advantages: low power consumption, long service life, low cost, low cost, low cost, low cost, low cost and high cost It has the characteristics of high brightness, less trouble, large viewing angle and long viewing distance.


the original text of LCD is liquid crystal display.
it is composed of the first letter of each word, which is often called "liquid crystal flat panel display" or "liquid crystal display" in Chinese.
its working principle is to make use of the physical characteristics of liquid crystal: the arrangement becomes orderly when it is powered on.
it makes light easy to pass through; When the power is off, the arrangement is disordered to prevent the light from passing through. To put it simply, let the liquid crystal block or let the light pass through like a gate.
when the power is off, the liquid crystal can be used to block or let the light pass throughThe advantages of LCD are: compared with CRT display.
the advantages of LCD mainly include zero radiation, low power consumption, small heat dissipation, small volume, accurate image restoration, sharp character display, etc.
purchase LCD.
there are several basic indicators: high brightness: the higher the brightness value, the brighter the picture, The brightness unit is CD / m2.
that is, candlelight per square meter.
the brightness value of low-level LCD is as low as 150 CD / m2, while that of high-level display can be as high as 250 CD / m2.
high contrast: the higher the contrast, the more bright and saturated the color, and the more three-dimensional it will be.
on the contrary.
low contrast, the poorer the color, The image will also become flat.
the contrast value is quite different.
it can be as low as 100:1, or as high as 600:1, or even higher.
wide visual range: in short,
refers to the clear range that can be seen in front of the screen.
the larger the visual range, the easier it will be; The smaller the value is, the clearer the picture will be if the viewer changes the viewing position a little.
the algorithm of visual range is from the middle of the picture.
the clear angle range of the picture is from the top, bottom, left and right directions.
the larger the value is.
the wider the range is naturally, but the range of the four directions is not necessarily symmetrical.
some manufacturers will add the angle values on both sides and mark them as horizontal: 160 °; Vertical: 160 °; It may also be marked separately as left / right: ± 80 °; Up / down: ± 80 degrees.
some LCD models have a single angle.
even only 40 degrees to 50 degrees,The response time to the display is calculated and processed by CPU.
signal response is very important for animation and mouse movement.
generally speaking, this phenomenon only occurs on LCD, The faster the signal response time is, the more convenient the task processing is.
one of the methods of observation is to move the mouse quickly (that is, the mouse keeps moving down to indicate to the system.
the system keeps responding to the signal to the display). On a low-level LCD display, the cursor will disappear when it moves quickly until the mouse is positioned, No longer move after a short period of time, will appear again; When moving at normal speed, you can also see the trace of mouse movement clearly.
while the response time of ve500's super express signal is as fast as 16ms.
it allows the cursor to move without time difference, and the moving process is clear and easy to see, which does not bring work trouble.
.
this paper introduces a new method of moving the cursor
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