The quality of the display of liquid sperm mainly depends on its performance

Generally speaking, it is enough to know the following five indicators:

1 The smaller the distance between the two points (less than 0 264mm).

2 Brighter (greater than 300) is better

3 Contrast ratio is better (500:1).

4 The faster the response time is better (within 8ns).

5. It is better to have a larger viewing angle (greater than 160 degrees).

In parentheses, 17 inches is the basic indicator as an example.

Highlights In the past, it was okay to have one or two at the earliest, but now the requirement is that there are no bright spots.

There is also an evaluation after use, it is best to find a better cost performance. Samsung's is good, and Meige's and You're good.

As for the check of the highlights, if you change the screen to black, the highlights will be noticeable. Don't buy the highlights.

The quality of the LCD display is closely related to its individual components:

The first is the LCD screen, the main parameters include: the number of bright spots, the number of dark spots, brightness, contrast, chromaticity, viewing angle, response time, bad spots, etc.;

The second is the situation of the circuit board, although there are no test parameters, but it is also very important, the external performance is mainly the heating situation, service life, repair rate, etc.;

The shell is again, mainly the quality of the materials used and the aesthetics of the design;

Finally, there is the situation of the power supply, including the power size, wave consideration capacity, etc.

Based on the above 2 bits, there is also the display mode (now there are VGA analog and digital).

There is also the number of lamps that are not high in heat

1. Reaction time.

2. Viewing angle.

3. Contrast.

CRT: Mainly brightness, contrast, bandwidth, respiration effect, electromagnetic radiation, focusing.

LCD: Mainly brightness, contrast, response time, dead pixels, color reproduction, viewing angle.

Liquid crystal displays are becoming the preferred configuration for computer users due to their radiation-free and pure flat displays. As the main component of the display, the quality of the LCD panel plays a very important role in the quality of the display; Manufacturers that sell LCD displays in the market usually do not produce LCD panels, but purchase them from upstream manufacturers. Each panel manufacturer has its own quality inspection system, and the panels produced by it are divided into different levels such as A, B, and C through certain standards.

Among them, grade A has the highest quality, while grade B and below have different degrees of problems in terms of bright spots, color saturation, brightness uniformity, etc., and are not suitable for assembling finished products. However, the defective panels that should have been eliminated have become the "sweet pastry" of some finished product manufacturers because they are very cheap. But.

Do ordinary consumers have this ability to discriminate?

It has been reported that Korean manufacturers regard panels with less than 3 dead pixels as A-grade, Japanese manufacturers with less than 5 dead pixels as A-grade, and some other manufacturers with less than 8 dead pixels as A-grade. The mainstream LCD display products are also different from this grade, and the LCD display without any dead pixels is generally AA grade; Less than 3 dead pixels, of which there is no more than one bright spot, and the bright spot is not in the screen ** area is grade A; If there are less than 3 dead pixels, no more than two bright spots, and the bright spots are not in the ** area of the screen, it is grade B. In this case, it is difficult for consumers to judge the grade and quality of the panel.

In addition, more importantly, the division of panel manufacturers for A、B-level panels does not simply depend on the number of bad points,But from whether the brightness is uniform、How is the color saturation and other comprehensive indicators,In this way,Consumers have no way to start。 Some people think that the B board is easy to identify and that counting the bright spots is enough, but this is actually a misconception. The reason why B-grade board is an unqualified product is not only because of the bright spots, but also because it has defects in many aspects such as color and brightness, but it is not easy for ordinary consumers to judge without professional standards.

Naming nokiatest with the help of some professional testing tools can do some work, but it is best to find a knowledgeable friend to help refer to it; And for the sake of your own interests, you should choose a well-known brand with a good reputation as much as possible.

Even if there is relevant software that can assist in judgment to some extent, this is both costly and too professional for the average consumer. The crux of the B-board problem is that there is no unified standard.

Some people believe that B-grade panels should also have their own living space, which can at least meet the needs of consumers who are shy and unable to buy A-grade products. There is some truth to this idea, but manufacturers should never use this as an excuse to sell defective products under the guise of A-grade products, and at least they should indicate the product grade on the finished product so that consumers can make their own decisions. In this way, consumers who are willing to buy B-board can choose B-grade products at the right price, and consumers who value the quality of the display can also buy A-grade products without worrying about being deceived by black-hearted manufacturers. Siss.

I admit that I am bad inside.

At present, the 17-inch LCD displays** and 15-inch LCDs of various brands of LCDs have dropped significantly. Facing the upcoming tide of the LCD era, are you ready?

If you're going to buy an LCD monitor, check it out before you buy it.

How to choose an LCD monitor.

The main aspects that affect the performance of LCD display are as follows.

1. Brightness. Brightness and contrast are important indicators with reference to the LCD display, the display function of the LCD is mainly a backlight light source, the brightness of this light source dominates the brightness of the whole LCD picture and the saturation of the color, theoretically speaking, the brightness of the LCD is the higher the better. At present, CD M2 is used as the unit of measurement for the brightness of liquid crystal displays.

The brightness of desktop LCD must be greater than 150cd m2, in fact, only above 200cd m2 can display the picture well, and the highest brightness of LCD on the market can reach 350cd m2.

2. Dead pixels. The so-called dead pixels refer to the irreparable pixels generated in the manufacturing process of LCD panels, and the dead pixels themselves do not emit light. It is mostly formed by some dust particles. It is worth paying attention to when you buy.

3. Response time.

Response time refers to the speed at which each pixel on the LCD reacts to the input signal, that is, the time it takes for the pixel to turn from light to dark or from dark to bright, also known as "response speed". It is worth noting that the response time of the current LCD should be the sum of TR (rise time) and TF (fall time). However, some manufacturers often mark TR instead of TF, which is an unstandard practice, and consumers should pay attention to this aspect when buying and carefully check the manual.

4. Viewing angle.

The viewing angle refers to the maximum angle formed when standing at a certain angle on the screen and can still clearly see the image on the screen. At present, most LCD monitors on the market have a viewing angle of more than 120°, while brands such as Samsung, Philips, LG and other brands can reach more than 140° 160°.

5. Contrast.

Contrast is the contrast between black and white. A contrast ratio of 120:1 allows for vivid, rich colors (because the contrast ratio that the human eye can distinguish is about 100:

1), and when the contrast ratio is as high as 300:1, it can support all levels of color. Most LCDs currently have a contrast ratio of 250:

1 350:1 or so. At present, there is no fair standard value to measure the contrast between brightness and contrast, so the purchase of LCD is all up to the subjective judgment of each person.

Of course, in addition to the above five technical parameters, LCD displays also have point distance, resolution, refresh rate, viewing area, etc., so I won't say much here.

It's all LCD now :

Let's look at the indicator first: what kind of LCD panel is it? tn，s-tn、mva、p-mva、pva、ips？Wide viewing angle, true color panel is the best, such as PVA, IPS, MVA, etc.

What is the response metric? In general, the smaller, the better.

What brand? The brand of the big factory is the best, and the small factory is a little worse in terms of supporting services and circuit board design and production.

Other indicators: point distance, resolution... There are benefits to finding out.

Let's look at the actual appearance:

This personal preference is different, such as style, color, surface material, etc...

The first thing to choose is to pick a good brand, such as ASUS, Samsung, AOC, etc. The second is to pick a model with a better reputation. Go to a regular store to buy a product and ask for an invoice. Built-in software to detect dead pixels.

I can only say that the display is bright in a variety of solid colors (including all black) to see if there are bright spots, this is the bare minimum, the others have response time and dynamic contrast, the shorter the response time the better, the higher the contrast the better.

You can only compare, look at them one by one, and look at them carefully. Don't worry, discern carefully. A little brighter is better.

In fact, Samsung, AOC, Asus, Dell are all good, don't buy copycats and it's fine, remember to ask for invoices for JS.

There must be a problem, take it back and change it.

It must be bad, bring the invoice and go for it.

1. The CPU frequency is high or low.

2. The size of RAM and ROM.

3. Whether the core platform is the latest technology.

4. Operating system and version.

5. Screen size, material and resolution.

6. The size of the battery capacity.

The above indicators directly affect the smoothness and operation performance of your mobile phone software.

The hardware is mainly the screen (resolution, material, size), chip (frequency, computing power), ROM and RAM size.

The software is mainly an operating system, with a wealth of software and high playability.

Look at the operating system Look at the software in this system** Look at the performance of the CPU The speed of the CPU is high, the running speed is fast, and it depends on the cost performance and after-sales service.

The display will not affect the performance of the graphics card, but it will only affect the performance of the game, because the monitor also has bandwidth, and it also needs data transmission.

Only the graphics card affects the display effect of the monitor, and the monitor has no direct relationship with the computer host. Truth be told, your graphics card sucks. It is also possible that there is a problem with the display itself, but the display definitely does not affect the performance of the graphics card, there is no such statement.

The display does not affect the graphics card. For 17, have you tried much. It shouldn't be like this.

There are still 15 spheres that can be considered to be replaced, and now the liquid crystal of 21 is 800 and the ball is very harmful to the eyes.

Change it as soon as possible. --Give the best...

There may be 3 aspects to judge:

1.Graphics card issues (replugging, updating drivers.) If it doesn't work again, ask for free replacement during the warranty period) 2.Problems with the cable (replugged).

3.Monitor problem (if it's convenient, check if it's normal to connect it to another computer).

No, even if you smash the monitor, the graphics card will still run normally, but it won't output it.

The quality of the display has no effect on the performance of the hardware at all.

It only affects the perception of the eyes.