Jul.2017 08
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What are the common types of LCD screen?

What are the common types of LCD screen


STN is the abbreviation of Super Teisted Nematic, which belongs to the passive matrix LCD, almost all black and white screen LCD screen is the material. STN color LCD screen is a color filter in monochrome LCD screen based on STN, and the monochrome display each pixel in the matrix is divided into three sub pixels, respectively through the color filter display of red, green and blue three colors, so as to realize the color picture. Due to technical limitations, the current STN LCD screen only 65536 colors, most of the market to see the color of the STN is the product, so STN is also known as pseudo color".


GF is "Glass Fine Color" acronym, perhaps everyone on the GF LCD screen is strange, because now the market using GF LCD digital products is very small, in fact, a GF belongs to STN, the main features of GF are: in the premise of low power consumption under the brightness increased, but some partial color GF LCD screen.


TFT is "Thin Film Transistor" acronym, also known as the "true color", which belongs to the active matrix LCD screen, which is composed of a thin film transistor liquid crystal screen, each of its pixels is composed of a thin film transistor to drive back, each pixel has a four thin film transistor independent pixel driven by color light, can display the deep color of the true color 24bit. In resolution, TFT LCD screen can reach UXGA (1600 * 1200).
The arrangement of TFT has the memory, so the current will not immediately disappear after restitution, so as to improve the STN LCD screen flicker and fuzzy shortcomings, effectively improves the LCD display dynamic picture effect, in the static picture display is also more prominent, the advantages of TFT liquid crystal screen than the effect of short response time, and colorful, so it is widely used in notebook computer and DV, DC. The TFT LCD screen is the disadvantage of power consumption, and the cost is relatively high.


TFD is "Thin Film Diode" acronym, the TFT LCD power consumption is high, and the cost is high, thereby greatly increasing the cost of the product, so EPSON developed specifically for the mobile phone screen TFD technology, it also belongs to the active matrix LCD screen, each pixel on the LCD are equipped with a single diodes can be separately controlled for each pixel, each pixel will not affect each other, which can significantly improve the resolution, can display dynamic picture without smearing and gorgeous color.
In terms of performance, TFD LCD screen has advantages of both the TFT and STN LCD screen LCD screen, LCD screen TFD higher brightness STN LCD screen, and the color is more vivid, and more power than the TFT LCD screen, but in color and brightness or LCD less than TFT.


OLED is "Organic Light Emitting Display" acronym, also known as the organic light emitting display, it adopts the technology of organic light emitting diode, which is currently the latest display technology, OLED display technology and the traditional liquid crystal display in different ways, it does not require a backlight lamp, instead of using the coating of organic material and the glass substrate is very thin, when a current through, these organic materials will be light, so it's a great view from all directions, can see the contents of the screen, and can be made very thin, but the OLED display can significantly save power, known as the "dream display".
Strictly speaking, OLED is not a liquid crystal screen, is the technology of LED. LCD screen technology in Japan, while the core technology of OLED in the United States, and now large-scale production in korea. The use of Samsung's most mobile phones in South Korea, the price is extremely high, even higher than the price of a smart phone.
But OLED is not without shortcomings, because it also belongs to a kind of immature technology, so it is still relatively short life, the screen area is relatively small.
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