LCD Segment Display Reflective Mode, TN HTN FSTN Alphanumeric LCD Meter Display Product Introduction

Meter LCD are always adopted to display the Electrical parameter measurement functions like voltage, current, power, energy. It also has the Voltage alarm function (overvoltage alarm threshold, backlight and voltage flashing prompt).

Meter LCD requires extended wide operating temperature ranges from -40-85C due to its application evironment.

JY4242HP-A features the key advantages for meter lcd as

• Super wide opereating temperature: -40°C to +85°C
• Wide viewing angle: HTN with wider viewing angle than normal TN type LCD
• Reliable polarizer solutions to keep stable quality of the product
• Available Back light:white/green/yellow-green/red/blue ( Transflective / Transmissive type )
• High backlight brightness
• Four colors silk ink of custom design optional

Meter lcd applications are as

LCD Segment Display Reflective Mode, TN HTN FSTN Alphanumeric LCD Meter Display Product Drawing

The Difference Between TN, HTN, STN, FSTN,DSTN, CSTN and TFT

LCD refers to Liquid crystal display, which is a general term for liquid crystal display technology. It contains TN, STN, DSTN, TFT these technologies, that is, TN, STN, DSTN, TFT are different classifications of liquid crystal display. The difference between them lies in the arrangement of liquid crystals, the torsion angle, and the electrical aspect.

The structure of TN, HTN, STN, FSTN, DSTN, and CSTN is basically the same.

TN is generally 90 degrees twisted,

HTN is 90~120 degree twist,

STN is 180~270 degree twist,

FSTN, DSTN, CSTN are all STNs, just because the appearance of ordinary STN is generally yellow-green or blue, while the appearance of FSTN and DSTN is black or white.

FSTN is an STN (Film compensated STN) with thin film compensation.

DSTN is a dual-STN structure to achieve black and white display.

CSTN is generally an FSTN structure with a color filter diaphragm structure to achieve color display.

TN products belong to the LCM (LCD Module) product category, the main advantages are low power consumption and abundant product display data.

HTN (High Twisted Nematic) nematic liquid crystal molecules are sandwiched between two pieces of transparent glass, and between the two layers of glass, the orientation of the liquid crystal molecules is deflected by 110~130 degrees. This type of LCD is characterized by high contrast, low power consumption, low driving voltage, and poor dynamic driving performance, but the viewing angle is wider than that of the TN type.

STN (Super Twisted Nematic) is an electric field that changes the arrangement of liquid crystal molecules that are originally twisted by more than 180 degrees to change the optical rotation state, and the electric field changes the electric field by progressive scanning. It has the advantage of low power consumption and has the biggest advantage of saving power.

The display principle of CSTN is to add a color filter to the traditional monochrome STN liquid crystal display, and divide each pixel in the monochrome display matrix into three sub-pixels, and display the three primary colors of red, green and blue through the color filter respectively, and the color picture can be displayed. Unlike TFT, STN is a passive passive type of LCD, which can display up to 65,536 colors.

FSTN (Film+STN), in order to improve the background color of ordinary STN, a layer of compensation film is added to the polarizer to eliminate chromatic dispersion and achieve black and white display. CSTN (Color STN), color STN, on the basis of FSTN technology, adds a layer of RGB color film to achieve color display, and the number of driving channels is generally higher. DSTN (Double STN), a double-layer STN, in which one layer is used as the driving layer and the other layer is used as the compensation layer, belongs to STN black and white technology, compared with FSTN, the contrast ratio is higher, and it can compensate for the dispersion with temperature by itself, to achieve high contrast over a wide temperature range.

VA panel is now a type of panel with more high-end LCD applications, and it belongs to a wide viewing angle panel. Compared with TN panels, 8bit panels can provide 16.7M color and large viewing angles are the capital of this type of panel positioning high-end, but the price is also more expensive than TN panels, VA panels can be divided into MVA panels led by Fujitsu and PVA panels developed by Samsung, of which the latter is the inheritance and improvement of the former. VA-like panels have the highest contrast on the front (face up), but the uniformity of the screen is not good enough, and color drift tends to occur. Sharp text is its killer feature, and the black and white contrast ratio is quite high.

Quality Management

1. Quality policy

Provide sound quality and deliver goods on time;

To satisfy requirements of customers with continuous improvement

2. EHS policy

To observe laws and regulations and to prevent and control pollution;

To try to reduce emission and conserve and make full use of resources;

To improve environmental protection awareness and continuously improve the environment;

3. Measures adopted

It will make transparent its quality policy and improve employees’ awareness on quality via training and education;

By implementing ‘5S’ management, it will make office and production spot tidy and orderly and employees well-trained;

It will make sure that the ISO9001 quality guarantee system cover all rounds affecting qualities of products and services before incorporating them to regulated and procedural management and control;

Under the premise that quality is guaranteed, it will reduce production costs including reduction of costs of raw materials and improvement of production and managerial efficiency.

Why Choose us

1. We provide LCD Display custom solution

Does your product have special application requirements, electrical specifications, optical specifications, touch features, or mechanical dimensions that require customized displays? SAEF can meet your custom LCD requirements.

2. Total solutions for Touch screen and display

Are you worried about assembling the touch screen and display screen? SAEF can provide custom and standard touch screen including Resistive and Capacitive multi-touch solutions including air & optical bonding service as well.

3. Commitment to quality reliability

SAEF is Qualified by ISO9001:2015 and ISO14000, meeting the RoHS, REACH and other environmental rules in global markets. We ensure quality through the manufacturing IQC,PQC and OQC management, reliability and aging testing.

4. Long-term supply

Under normal circumstances, the products we recommend can be supplied for more than 5 years. If there are special needs, we will make alternative plans in advance to ensure your long-term supply requirements.

LCD Segment Display Reflective Mode, TN HTN FSTN Alphanumeric LCD Meter Display Product Drawing

Factory Facilities and Certificates

Contact Us

We love to hear about your projects, If you have any questions, we can be reached at sales2@saef.com.cn

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