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- The Ultimate Solutions

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tn segment positive reflective display grey background and black letters lcd panel hero.jpg

Tutorial: Dr Pan Teaches Teaches TN LCD Screen

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 TN LCD Screen. 

Dr Pan: Hello, Greg. TN is the abbreviation for Twisted Nematic. The main difference between TN, HTN, STN and FSTN LCD is the view angle. From the definition, the maximum view angle of TN LCD is 90°. Take this TN 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.

 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 purple-black, different colors from different view angle, 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 TN negative LCD, it may look like this. Actually, from our experience, no one has done it before since HTN or STN negative LCD with blue background looks better with wider view angle.

     TN LCD is the most commonly used since it is the cheapest. The maximum COM is 4, so it can’t display too many segments, and it can’t be used in the high end devices. But it 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.

Feature Products

There are more than 100 new prototypes being developed every month and only a few selected typical feature products are displayed. 

Display Type: TN / Segment

Display Size: Customized

Display Mode: Positive/Transmissive

Display effect: Grey Background and Black Letters

Application:  Massage Chair

Backlight: White

Display Type: TN / Segment

Display Size: Customized

Display Mode: Positive/ Transmissive

Display effect: Grey Background and Black Letters 

Application: Touch Button

Backlight: Sky Blue

Display Type: TN / Segment

Display Size: Customized

Display Mode: Negative/Transmissive

Display effect:  Dark Violet Background and White Letters

Application:  Cash Counting Machine

Backlight: White

Display Type Display Mode Polarizer Background Letters Backlight
TN
Positive
Reflective
Grey
Black
No
TN
Positive
Transmissive
Grey
Black
Yes
TN
Positive
Transflective
Grey
Black
Yes or No
TN
Negative
Transmissive
Dark Violent
White
Yes
TN
Negative

Transflective(rarely used)

Dark Violent
White
Yes

TN LCD Screen Solutions For ODMs and OEMs

TN LCD screens are highly popular due to their low-cost and high customization. Our experienced team can develop the right solution with an integrated assembly of different technologies to your hands.

Display Technologies

  • Transmissive, transflective and reflective polarizers
  • Positive and negative modes
  • ITO glass thickness: 0.3mm, 0.4mm, 0.55mm, 0.7 mm and 1.1mm
  • Static driving mode and dynamic driving mode
  • Shapes: round, rectangle, octangle and through-holes
  •   View angle: 12 O’clock, 3 O’clock, 6 O’clock, 9 O’clock
  • Silkscreen: Black mask, red, green, blue, multi-color printing
  • Touch solutions: one-sided ITO film touch technology and double-sided ITO film touch technology
  • Connection: PIN, zebra, FPC

Characteristics

  • Cheapest
  • Only suitable for segment LCD display
  • Maximum COM:4
  • view angle is narrow, only one direction
  • a lower requirement for raw material
  • widely used and  easy to be produced 
  • simple display content and low contrast ratio
  • can’t be used in high end devices

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@displayman.com”

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@displayman.com”