The display screen is applied to all aspects of our life, including mobile phones, home televisions, home appliances, calculators, computers, etc. There are many types of screens, and there are many kinds of light liquid crystal screens. In addition, the new OLED flexible screen, miniled screen and micro LED screen are also available. What kinds of display screens are there? How are they defined?
1. Segment code LCD
Segment code LCD screen was developed in Japan in the early stage and introduced into China in the 1980s. It is mainly used to replace LED digital tube (composed of 7 pen segments, used to display numbers 0-9), such as calculator, clock and so on. The display content is digital and simple.
There are many ways to call it, such as pen Segment LCD, small size LCD, 8-character LCD, pattern LCD and so on.
2. Lattice screen
The dot matrix screen is divided into LCD dot matrix and LED dot matrix screen. In a simple way, there are many points in a range, which are called pixels. The dot matrix LCD pixels are composed of fixed size points. These points are arranged according to the array. For example, 12864 is composed of 64 points horizontally 128x vertically.
3. TFT color screen
TFT is a classification of LCD, which is the rudiment of all LCD screen improvements at present. Like the screen used in the older mobile phones before, TFT belongs to the lattice type. It pays attention to pixels, and the color is the concept of color scale. Color scale is the index standard of the brightness of LCD, which is commonly called color index. At present, there are generally three kinds of color quality in the market: 256 colors, 4096 colors and 64K (65536) colors or even higher 260000 colors. The display effect of different color quality is different. The display is divided into three categories: ordinary text, simple images (such as cartoon images, mainly menu charts and drawn standby images) and photo images. As for the users with higher requirements for photo quality, 64K color is certainly a better choice.
4, LED screen
LED screen is simple. It is a screen composed of many LED lights. The signs of streets and small ports are all of this kind.
5, OLED screen
OLED screen displays image by pixel self illumination. From this point of view, OLED screen is more advanced than LCD screen technology. In addition, OLED screen can be made thinner in thickness, which is conducive to the thickness control of the whole machine.
Generally speaking, it can be classified as LCD and OLED in a large range. The two kinds of screens have essential differences in terms of light emission. One is illuminated by external light source, the other is self illumination. From the current development situation, these two camps will continue to follow the use, to meet the needs of different users for color performance.
6. Miniled screen
Mini led, also known as "submillimeter led", is the first LED with a size of about 100 microns proposed by crystal optoelectronics. Mini LED is a transition technology between traditional LED and micro led, and it is an improved version of traditional LED backlight.
7. Microled screen
Micro LED screen is a new generation of display technology, with matrix miniaturized led. In short, the LED backlight is thinner, smaller, and the LED unit is less than 100 microns. Like OLED, each pixel is individually addressed and driven to emit light (self illumination).