The difference between dot matrix screen and TFT screen
The dot matrix screen technology, taking full-color as an example, packages 192 LED chips in three colors in a module, which forms a unit board and a display screen. Lattice, itself a geometric term, is English for: lattice. It is a grid frame, similar to the meaning of a grid frame. Originally a spatial term, if taken out of a flat surface, it is not related to the arrangement of light beads on the display screen. Designing a display dot matrix refers to how many pixels can be displayed on the length and width of the display screen, or how many LEDs will emit light simultaneously on the length and width of the LED display screen. There is a deep connection with the mesh structure of our digital and analog circuits. The main products of dot matrix full-color are P6 and P7.62 specifications. Suitable for different places such as sports venues, commercial applications, banks, securities, postal services, schools, restaurants, hotels, entertainment, enterprises, etc.
TFT is a variant of LCD. TFT, Thin Film Transistor, is a type of active matrix liquid crystal display AM-LCD. TFT is equipped with a special light tube on the back of the liquid crystal, which can "actively" control each independent pixel on the screen. This is the origin of the so-called Active Matrix TFT (AcTIVeMatrixTFT), which can greatly improve the reaction time. Generally, the reaction time of TFT is relatively fast, about 80ms, while STN is 200ms. If you want to improve it, there will be flickering phenomenon. Moreover, due to the active matrix LCD of TFT, the arrangement of liquid crystals has memory, and will not immediately return to its original state after the current disappears. TFT also improves the phenomenon of STN flicker (water ripples) - blurring, effectively enhancing the ability to play dynamic images. Compared with STN, TFT has excellent color saturation, restoration ability, and higher contrast, but the disadvantage is that it consumes more power and has a higher cost.