What are the disadvantages of a flat panel monitor

1. Price

Although it is low price, but the CRT comparison, the price of liquid crystal display in the display family is a noble price, is only 15 inches on 3000 yuan, and the same size of the flat-screen display is not only about thousand yuan. Expert analysis of the high LCD screen is the main reason for the low yield in the manufacturing process, resulting in the cost can not be reduced. At present, only some manufacturers in Japan and Taiwan, which can produce LCD screens, have not fully spread the technology, and have not yet formed a competitive situation of mass production, and there are great differences in quality. In the international market, the price difference between different grades can reach dozens of to hundreds of dollars.

2, interface

The digital interface of liquid crystal display is very cold at high place. Theoretically speaking, the LCD is a pure digital equipment, and the computer host connection should also be the use of digital interface, the advantages of using digital interface is self-evident. Firstly, the signal loss and interference in the analog-to-digital conversion process can be reduced, the corresponding conversion circuits and components are reduced, and then the clock frequency and vector adjustment are not needed.

However, the current market on the sale of low-priced liquid crystal display, most of them are analog interface, there are transmission signals vulnerable to interference, display internal need to add analog-to-digital conversion circuit, can not upgrade to the digital interface and so on. Moreover, in order to avoid the occurrence of pixel flicker, the clock frequency, vector and analog signal must be exactly the same.

In addition, the LCD digital interface has not yet formed a unified standard, with digital output of the display card in the market is not uncommon. As a result, the key advantages of liquid crystal displays are difficult to give full play to. For now, the result of early consumption is to spend a high price to buy a device.

3. Small visual angle

Early LCD visual deflection angle is only 90 degrees, only from the front view, from the side will appear a large brightness and color distortion. Now on the market, the visual deflection angle of the liquid crystal display is generally about 140 degrees, for personal use is enough, but if several people at the same time watch, the problem of distortion appears.

4, the corresponding time is too slow

Response time is a special indicator of liquid crystal display. The liquid crystal display response time refers to the monitor each pixel point to the input signal reaction speed, the response time is short, then displays the movement picture does not produce the image to drag the tail the phenomenon. This is important when playing video games and watching fast motion images. Fast enough response time to keep the picture consistent. At present, the market on the general liquid crystal display, response time compared with the previous has been a great breakthrough, generally around 40ms. But still unable to meet the requirements for 3D games and high quality DVD movie playback.

5. Low Brightness and contrast

Do you want a flashlight? This joke is about the brightness and contrast of the liquid crystal display. Because the liquid crystal molecule cannot emit light of its own, therefore, the liquid crystal monitor needs to rely on the external light source to assist luminescence. Generally speaking, 140 lumens per square metre is enough. There are still gaps in the parameters and actual standards of some manufacturers. Here to explain, is that some small size of the liquid crystal display in the past mainly used in notebook computers, the use of two lamp adjustment, so their brightness and contrast are not very good.

6, Maintenance problems

LCD bad point problem. Liquid crystal display materials generally use glass, it is easy to break, plus each pixel is very small, often cause individual pixel bad phenomenon, commonly known as bad point, this is unable to repair, only replace the entire display, and replace the price is often very expensive.

The introduction of a new product, its own superior to the characteristics of Chen Pin. The advantages of LCD display is its lightweight and easy and environmental protection eye. However, because of the current LCD products at the same time the defects, can not meet the needs of all consumers. In such a product technology premise, we call on the vast number of consumers, do not blindly follow the trend of fashion, but to recognize their needs and product characteristics, to make the most objective and practical judgments.