Dr Pan:Welcome to DISPLAY Museum. I am Dr Pan, the curator of Museum.

Greg: Hello, Dr Pan. I am Greg. I came here to learn about HTN LCD Screen. 

Dr Pan: Hello, Greg.  HTN is the abbreviation for High Twisted Nematic. The main difference between TN, HTN, STN and FSTN LCD is the view angle. From the definition, the maximum view angle of HTN LCD is 110 degree. Take this HTN positive LCD for example. The view angle is 6 o’clock direction and it can be seen very clearly in the 6 o’clock direction and the front side.The display content can only be seen in a small angle in 3 o’clock , 9 o’clock and 12 o’clock direction.

 When it is a positive and reflective display, it can display without LED backlight; when it is a positive and transmissive/ transflective display, it can’t display without LED backlight, the background color is grey and the letters are black.

When it is a negative and transmissive/ transflective display, it can’t display without LED backlight, the background color is blue and the color of the letters is the color of LED backlight.

By the way, no matter it is a positive or negative display, the background color is affected by the color of LED backlight on some level. That is why the color of LED backlight is usually white.

Theoretically, we can add a blue film to HTN negative LCD, it may look like this. Actually, if you want it to look better, we strongly suggest that you choose STN negative LCD with blue background, which looks much better with wider view angle.

 The maximum COM is 16, so it still can’t display too many segments, and it isn’t suitable for the high-end devices. But it also performs very well in the simple display content: calculator and alarm clock.

Greg: Thank you, Dr Pan. Now I got it.

Dr Pan: Welcome to contact us if you have any questions.