How to choose LCD
Author:Zheng Dongdong Time:2021-08-05 10:14 Browse(395)
When you buy LCD, you should not only look at the price, but also pay attention to the angle of view, contrast and the type of input interface.
When you buy LCD, you should not only pay attention to the price, but also pay attention to the angle of view, contrast and the type of input interface.

How to choose LCD

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compared with CRT, LCD occupies less space.
therefore, it can create a more comfortable working environment.
especially, even if the screen size increases.
the front and back depth of the display will not increase, Therefore, you can make more effective use of desktop space.
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because the price has dropped a lot.
it is recommended that you buy a new LCD.
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under the same size.
LCD screen is larger.
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even if it is the same size.
LCD screen is larger than CRT screen for example,
a nominal 19 inch (about 48.3cm) display, The actual diagonal length of the screen is only about 45-46cm.
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and the LCD has a screen size that fully meets the nominal value.
therefore, even if the size of the newly purchased LCD is one grade smaller than that of the CRT used in the past (
if the CRT is 17 inches,
the LCD is 15 inches.
if the CRT is 19 inches,
the LCD is 17 inches), It is basically no problem to use.
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as the specification value to indicate the display quality of LCD.
like CRT, the most important ones are "display pixel number (i.e. resolution)", "point spacing (i.e. pixel spacing)" and "horizontal frequency"
in the LCD
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"display pixels" refers to the number of pixels that can be displayed in the vertical and horizontal directions respectively.
it is proportional to the screen size.
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"dot spacing" indicates the pixel spacing.
the smaller the value is, the more delicate the picture is.
the larger the value of "horizontal frequency" is.
the more stable the picture is, The more comfortable the eyes look.
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in addition to the above mentioned indicators,
the specific specification value of LCD is also very important.
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"viewing angle" refers to the angle at which the picture can be seen clearly from the side.
if it is "horizontal 160 degrees"
then it means that the whole picture can be seen clearly from the front, left and right sides at an angle of 80 degrees The larger the number, the higher the visibility of the product.
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the larger the values of "contrast" and "Brightness" also indicate the higher the performance of the display.
although there is no problem in viewing static images.
but when we often enjoy fast moving images, we can see that the display has a better performance, We must pay attention to these values.
recently launched products have the function of automatically adjusting the contrast and brightness according to the characteristics of the image to be displayed.
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we should also pay attention to the type of input interface.
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"input interface" is also a very important indicator.
because when connecting the personal computer and the monitor.
the image quality displayed by the digital interface is higher than that of the analog interface, The effect is more exquisite.
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the analog interface is basically represented as "small d-sub15" interface.
connect with the "small d-sub15" output interface of personal computer by using the connecting line.
the analog interface is mainly represented as "small d-sub15" interface
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as a digital interface.
ordinary products are represented as "DVI-D" or "dvi-i.
" DVI-D "refers to the digital dedicated interface.
when connecting, the personal computer must also have an output interface supporting" dvi-d.
while "DVI-I" supports both digital and analog output interfaces.
when the personal computer does not have a digital output interface.
the "small d-sub1" can be used Before the purchase of LCD, It is necessary to confirm in advance which of the analog and digital interfaces your PC supports.
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both the PC good at playing dynamic images and the latest PC may support digital interfaces.
at this time, it is better to choose a display with digital interfaces such as "DVI-D" or "dvi-i.
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but.
if you have been using CRT monitor in the past If you don't, Maybe it can only support analog interface.
at this time, it is better to choose the display with "small d-sub15" or "DVI-I" interface.
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in low-cost LCD displays.
some products only have "small d-sub15" interface.
for personal computers with only analog output interface.
this is enough.
but if you plan to upgrade the computer in the near future.
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of course.
even if you do not replace your PC, you can install high-performance graphics card with digital interface (products installed in PCI slot),It can also use digital interface.
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in addition,
some liquid crystal displays also have built-in stereo speakers and USB hub.
it is more conducive to saving space.
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for liquid crystal displays, different manufacturers and products, The color of the fuselage is not the same.
it is suggested that before purchasing, you'd better go to oak net to compare the goods.
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look at the manufacturer.
look at the LCD, there are several bad points.
look at the screen manufacturer.
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look at the LCD
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