Description
The simplest TN LCD panel consists of two polarizers, two glass substrates with transparent electrodes, ITO (indium tin oxide), and a thin layer of liquid crystal material sandwiched between the electrodes.
When the voltage is turned off, natural light from the light source becomes polarized line light through the top polarizer. When it encounters nematic liquid crystal molecules, it twists together with the liquid crystal twisted layer Twist 90 degrees to reach the bottom polarizer through the bottom glass. Due to the polarization light being parallel to the bottom polarizer, through the polarizer, we can see light (white or gray pixels).
When the voltage is turned on, the liquid crystal molecules will be perpendicular to the glass surface and lose their distortion under the action of an electric field. When polarized light encounters a nematic liquid crystal layer, it maintains its original transparency without distortion Due to the vertical position of the linear light and the bottom polarizer, it will be blocked by the bottom polarizer. We did indeed see light (black pixels)
In summary, we understand that:
Why do we name TN twisted display because it distorts 90 degrees,
We have a positive display above, which is a black character on a white or gray background.
There are two modes for glass panels. Positive mode (white/gray background with black text) or negative mode (black background with white/gray text). The reason why TN LCD cannot obtain a paper white background is that polarization truncates most of the light, and only 20% to 40% of the light can pass through TN LCD.
1 Display Mode:VA/ TN/ TRANSMISSIVE/ NEGATIVE
2 Driving Condition: 1/8Duty , 1/4Bias,5.0V
3 Viewing direction:6:00 o’clock
4 Operation temperature: -0°C TO 50°C
5 Storage temperature: -10°C TO 60°C
6 Connector: PIN
Electro-Optic Characteristics
| NO | ITEM | Symbol | TEMP(℃) | Rating | Unit | Note |
| Min | Typ | Max |
| 1 | Operating Voltage | Vop | 25 | 4.8 | 5.0 | 5.2 | V | Note1 |
| 2 | Response Time | Rise Time | Tr | 25 | | 100 | | ms | Note2 |
| Fall Time | Tf | 25 | | 150 | |
| 3 | Operating Frequency | fF | 25 | | 75 | | Hz | |
| 4 | Contrast Rate | Cr | 25 | 2 | 5 | | | Note3 |
| 5 | Viewing Direction | 6:00 o’clock | | Note4 |
| 6 | Viewing Angle Cr≥2 | 12H =90° | θup | 25 | | 5 | | Deg | Note4 |
| 6H f =270° | θdown | | 40 | |
| 3H f =0° | θleft | | 30 | |
| 9H f =180° | θright | | 30 | |
| 7 | Current Consumption | Is | 25 | | 3.0 | | μA | Note5 |
Reliability Testing
| Test Item | Test Condition |
| Storage at high Temperature and humidity | 60℃,90%RH,48hrs； |
| Storage at low temperature | -10℃,48hrs |
| Storage at high temperature | +60℃,48hrs |
| Operate at low temperature | 0℃,48hrs,specified voltage |
| Operate at high temperature | +50℃,48hrs,specified voltage |
Customization
| Applicaion | Meter display |
| Display Content | digits+dots+patterns |
| Operating voltage | 3.3V or according to your demand |
| Driving method | according to your request |
| Viewing angle | 6H 9H 12H |
| LCD mode | TN STN FSTN HTN VA DFSTN optional |
| Display mode | Negative positve Reflective transfelective transmissive |
| Conecting mode | Metal pin / rubber / others |
| Backlihgtlight | Nil or with white&blue backlight |
| Voltage driving | Dynamic voltage |
| Controller | Nil or according to request |
| Interface | I2C or other |
| Operating voltage | -20~+70℃(common),according to your request |
| Storage voltage | -30~+80℃(common),according to your request |
| OEM/ODM | Accecpted |
| System design | Lcd module related system software and hardware design accepted |
| Warranty | 12 moths free, payed warranty lifttime |
| Packaging | Plastic bag +foam+carton |
| carton size | 41.5x36x50cm |
| Sample lead time | 3-20 working days |
| Customize lead time | 15-30 working days |
| Production Lead time | 7 days for available designs,Customized: 35~40 days |
| Cetification | Rohs, Reach |
Products Presented
Factory Facilities and Certificates
Product Tags:
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Custom 7 Segment LCD Panel Touch Screen Display LCD Manufacturer Images
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