The present liquid crystal display of the liquid crystal display device can be divided into two kinds of twisted nematic (tn), super twisted nematic (stn) and thin film type (thin film transistors).
One, the twisted nematic liquid crystal display (tn-lcd) tn is a new liquid crystal material developed after the liquid crystal material of the dsm type, and the maximum characteristic of tn-lcd is as the name "twisted nematic", and the arrangement direction of the liquid crystal molecules from the uppermost layer to the lowest layer is exactly the 3d spiral of 90 degrees.
The appearance of the super-twisted nematic liquid crystal display (stn-lcd) stn-lcd is to improve the problem of poor contrast of tn-lcd. The maximum difference is that the angle of the liquid crystal molecules is different and the alignment layer of the glass substrate has a pretilt angle, and the arrangement direction of the liquid crystal molecules from the uppermost layer to the lowest layer is exactly the 3d spiral of 180 degrees to 260 degrees.
In order to improve the requirement of color, the basic construction principle of tstn and fstn is the same as stn. The trend of the crt screen is the most likely to board the top of the display.