The mobile phone that can be bought now is almost all because of the LCD as a display, due to quality and technology, there are several kinds of fstn, CSTN, TFT, of course, there are other display types, such as time comparison. OLED display. Below, we make a simple introduction to these displays, I hope to help everyone. FSTN screen FSTN's mobile phone screen, should be the most touching mobile phone display, because the screen of the black and white mobile phone we used is FSTN. STN is full of Super Twisted Nematic, FSTN belongs to a passive matrix LCD device, its advantages are small power consumption, wide viewing, cheap, but its fatal injury cannot make color display, and response speed Slow, dynamic display, when playing games with mobile phones, is serious. The classic mobile phone in the FSTN era is really countless, Nokia 8310, Moto V70, Samsung A288 can be an outstanding representative. With the continuous improvement of life requirements, technology has continuously improved, and black and white mobile phone screens faced the fate of complete elimination, and colored mobile phone screens should be born. Migrate mobile phone manufacturers are more called color screens in 2004. Advantages: Cheap, standby time long draw: The quality of the picture is general, the brightness and brightness is relaxed in the CSTN screen CSTN's display principle to add a color filter on the traditional monochrome FSTN liquid crystal display, and put the monochrome display matrix Each pixel is divided into three sub-pixels, and the color filter is displayed through the color filter, and the three sub-pixels can be displayed with a color screen. The CSTN and FSTN display principle are the same, and the passive matrix LCD is also a passive matrix LCD. The power saving is its largest advantage, but there is a shortcoming of the response speed is too slow, and because the problem of color compensation, the CSTN itself cannot achieve complete black and white background. Therefore, its color reduction ability is far less than TFT. At present, many low-cost color screen phones on the market are using the CSTN screen, sometimes referred to as pseudo. Most of the mobile phones that use CSTN are very particularly cheap, but there are also no shorthairs, and Sony Ericsson T618 uses a 64K CSTN main screen. NOKIA's early launched color screen mobile phones are 4K-color screens, including 7210,7210i series. The UFB screen Samsung has been technically improved for the disadvantages of CSTN, and the UFB (Ultra Fine and Bright, Ultra Precision Brightness) screen, compare traditional CSTN, UFB screen greatly increases the transmissive transmissivity, making backlight It looks brighter, and adopts optimized design, and strives to improve the color compensation effect, which greatly enhances the reducing ability of the color, and can achieve the effect of approaching TFT. Although the number of color screen phones that use UFB materials is quite limited, UFB is still famous. The reason is the reason, this technology is a famous Korean Samsung's patented technology, and the light and brightness is the two major selling points of its products. Simply put, the brightness and power consumption of UFBs are between the above STN and TFT, but only Samsung is still the same as several manufacturers of many manufacturers, so it can be said that the current UFB screen is still in the non-mainstream product stage. . At present, the UFB screen is widely used in Samsung's multiple models of mobile phones, Samsung S308 and T508 still have many girls who love beauty. The x339 and x359 lay a next heaven and earth for Samsung in the CDMA market. TFD screen TFD is an abbreviation of Thin Film Diode film diode, also known as a thin film diode transflective liquid crystal display.
The biggest feature is to provide high-quality, easy viewing display, and have low power, high-quality, high response speed, whether to close the backlight (reflection mode) or open backlight (transmission mode). . Due to the high cost of the TFT and cost, this undoubtedly increases availability and mobile phone costs, so TFD technology is developed by mobile phone screen giants Epson. It is a trade-off in TFT and STN, which has better brightness and color saturation than STN, but more power saves more than TFT. The TFD is characterized by "high quality, ultra low power, miniaturization, dynamic image display capabilities, and fast response time". The display principle of the TFD is that it is equipped with a separate diode for each pixel on the LCD as a control source. Since such a single control design, the difference between each pixel does not affect each other, so it can be on the screen of the TFD Dynamic screens and bright colors of no residual shadow. The TFT is also the active matrix drive. It is not difficult to find out from STN and TFT screens, and the two are intertwined, while the director is also the deficiencies of the other party, and UFB is more like transition products between the two, the picture quality is not as good as TFT, but It is better than STN; more than TFT is more than TFT, but the enemy is not STN. In other words, the TFDs of the midburst have nothing to say. The TFD originally developed can only be displayed 4096 colors, but if image processing techniques can be displayed, an image equivalent to 26,000-color. However, the relative TFT is still not in color display. At present, there are NECN8, Samsung SCH-X319, and color reaching 260000 colors of LG Cu8280. TFT screen TFT (Thin Film Transistor Thin Film Transistor) is one of an active matrix type liquid crystal display (AM-LCD), and TFT is a switching element provided on the pixel electrode, "can" active "on the screen. Each independent pixel is controlled. This is the so-called active matrix. The TFT is still based on the TN-based structure, so it can provide more response speed than the CSTN, while the TFT is active The matrix LCD allows the arrangement of the liquid crystal to have a memory, and it is not immediately restored immediately after the voltage disappears. TFT avoids the generation of crossover effects, effectively improves the ability to play dynamic pictures, and STN has excellent color saturation, reduction ability, and higher contrast, faster, but the disadvantage is to consume And the cost is also relatively high. At present, most of the high-grade color screen phones on the market use TFT screens, which are commonly known as true color, such as Samsung X369 and E708, Sharp GX22 and Sony Ericsson P908, etc., simply countless. Advantages: bright, clear, brightness, highlights: expensive price, standby time short OLED screen OLED (Organic Light Emitting Display), an organic light-emitting display, is no longer a category of liquid crystal display. OLEDs have been recognized as the next generation of mainstream display technologies because of its own various superior performance. More people call OLEDs as the killer of LCD. OLED display technology is different from traditional LCD display, it can do thinner and lighter, active illumination (no backlight), wide viewing angle, high definition, fast response, low temperature, low temperature and earthquake performance, potential Low manufacturing cost, flexibility and environmental design, etc.
