stn vs tft display free sample

– Liquid crystal material: Both use nematic LC materials but FSTN fluid has more cholesteric doping materials in it in order to help its molecular to twist higher degree.

– Viewing Angle: FSTN LCD has much better wide viewing angle than TN LCD especially at higher multiplexing application. TN LCD has a weak viewing direction, that is the reason we have to define 6 or 12 o’clock viewing angle. But FSTN LCD can be viewed clearly from all the viewing directions.

– Response time:  Between FSTN LCD has higher twist angle, it takes more time to make a change. It has longer response time or slower response speed than TN LCD.

– Operation Temperature Range:  Because of extremely slow response and background color change for FSTN LCDs at low temperature, FSTN LCDs can only be used within -20oC to +70oC, but TN LCDs can be used with -40oC to +90oC which can be easily used for outdoor applications. FSTN LCD response speed in extremely cold environment can be improved by adding a heater. FSTN LCD color change at low and high temperature can be solved by adding a reversed optical compensation cell as DSTN (Double STN), but the cost will be more than double.

– Power Consumption: Theoretically, FSTN and TN LCDs should consume the same level of power. But FSTN LCDs are normally used for high multiplex application, they use higher frequency drive and their LCD controllers and drivers normally consume more power than TN LCDs. While in general opinions, TN uses much less power than STN or FSTN LCD displays.

– Assembly (Display Module):  Because most of TN displays have fewer contacts, it can use pins, zebra, FPC (Flex Printed Circuit) to make the connections. When assembled in the LCD modules, normally COB (Chip on Board) is used. While FSTN displays have more contacts, high density and more reliable assembly ways have to be used. COG (Chip on Glass) excels because of its low cost and compatible for high volume production.

– Sunlight Readable: It is a big advantage for both TN and FSTN LCD. By applying a reflective or transflective polarizer at the back of the LCD, the high contrast display can be achieved under sunlight.

means Twisted Nematic Liquid Crystal Display. It is the first commercial success LCD technology which is still widely used in low cost and low power consumption applications. Of course, we mean it passive TN LCDs.

If TN technology combined with TFT (Thin Film Transistor), it becomes active matrix display which is widely available for full color display market. Because the name of TN is very technical, when we hear TFT display which we know it is for short of TN type TFT LCD displays. How TN display technology works, showing in Fig.1.

STN LCD means Super Twist Nematic Liquid Crystal Display. TN LCD displays have the advantage of low cost and low power consumption, but it also has its intrinsic disadvantages, such as narrow viewing angle, poor contrast and limit to be used in high multiplex (duty) application.

They can only be used for some alphanumeric displays. Scientists and engineers invented STN LCD to overcome the limitation of TN LCD to make high duty graphic LCD display possible.

Compared with TN LCD’s 90otwist degree, STN LCD increases the twist to 180oto 270o. With this change, STN display’s electro-optical performance changes greatly. See Fig. 2.

Japanese scientists and engineers used a layer of retardation film to compensate the color to make STN color changing to Black and White. Monochrome black and white FSTN makes CSTN (Color STN) possible.

Compared with TN displays, FSTN displays have much higher contrast and wider viewing angles. But FSTN technology are only limited to passive matrix application. They can’t be used together with TFT technology like TN technology to become active matrix displays.

As FSTN LCDs can be made high density together with COG (Chip on Glass) technology, the FSTN display modules can be made high compact to make thin and light possible.

Slower response time because of larger twist angles. The normal operating temperature range is -20oC to +70oC. The color is also changed with temperature, the improvement way is to use DSTN (double STN cells) which can compensate for the color changes and achieve high contrast ratio at low and high temperature.

The same as other LCDs, FSTN LCDs can’t emit the light themselves. They have to assembled with backlight to make them LCD display modules to be able to use in applications. But backlight will drive a lot of power.

This type of LCD was invented at the Brown Boveri Research Center, Baden, Switzerland, in 1983.twisted nematic (TN) LCDs with a 90 degrees twisted structure of the molecules have a contrast vs. voltage characteristic unfavorable for passive-matrix addressing as there is no distinct threshold voltage. STN displays, with the molecules twisted from 180 to 270 degrees, have superior characteristics.

The main advantage of STN LCDs is their more pronounced electro-optical threshold allowing for passive-matrix addressing with many more lines and columns. For the first time, a prototype STN matrix display with 540x270 pixels was made by Brown Boveri (today ABB) in 1984, which was considered a breakthrough for the industry.

STN LCDs require less power and are less expensive to manufacture than TFT LCDs, another popular type of LCD that has largely superseded STN for mainstream laptops. STN displays typically suffer from lower image quality and slower response time than TFT displays. However, STN LCDs can be made purely reflective for viewing under direct sunlight. STN displays are used in some inexpensive mobile phones and informational screens of some digital products. In the early 1990s, they had been used in some portable computers such as Amstrad"s PPC512 and PPC640, and in Nintendo"s Game Boy.

CSTN (color super-twist nematic) is a color form for electronic display screens originally developed by Sharp Electronics. The CSTN uses red, green and blue filters to display color. The original CSTN displays developed in the early 1990s suffered from slow response times and ghosting (where text or graphic changes are blurred because the pixels cannot turn off and on fast enough). Recent advances in the technology, however, have made CSTN a viable alternative to active matrix displays. New CSTN displays offer 100ms response times (for comparison TFT displays offer 8ms or less), a 140 degree viewing angle and high-quality color rivaling TFT displays – all at about half the cost. A newer passive-matrix technology called High-Performance Addressing (HPA) offers even better response times and contrast than CSTN.

Samsung had two proprietary technologies for STN LCDs, Ultra Fine & Bright (UFB), which delivered wide viewing angle (about 120 degrees), faster response time (about 60 ms) and less power consumption, while Ultra Fine & High Speed (UFS), delivered almost same color depths as TFT LCDs, greater color purity, much faster response time (about 14 ms) and same contrast ratio as TFT LCDs.

Dual Scan STN: An enhanced STN passive matrix LCD. The screen is divided into halves, and each half is scanned simultaneously, thereby doubling the number of lines refreshed per second and providing a sharper appearance. DSTN was widely used on earlier laptops. See STN and LCD.

FSTN: Film compensated STN, Formulated STN or Filtered STN. A passive matrix LCD technology that uses a film compensating layer between the STN display and rear polarizer for added sharpness and contrast. It was used in laptops before the DSTN method became popular and many early 21st Century cellphones.

CCSTN: Color Coded Super Twist Nematic. An LCD capable of displaying a limited range of colours, used in some digital organisers and graphic calculators in the 1990s

Scheffer, T. J.; Nehring, J. (1984-11-15). "A new, highly multiplexable liquid crystal display". Applied Physics Letters. AIP Publishing. 45 (10): 1021–1023. Bibcode:1984ApPhL..45.1021S. doi:10.1063/1.95048. ISSN 0003-6951.

As a veteran manufacturer, we have accumulated rich display industry knowledge, including LCD display technology, OLED display technology, LED display technology, and so on. We want to share all these values here.

TFT displays are also known as an “Active Matrix TFT LCD module” and have an array of thin film transistors fabricated on the glass that makes the LCD. There is one of these transistors for each pixel on the LCD.

LCDs use voltage applied to a field of microscopic liquid crystals to change the crystal’s orientation, which in turn changes the polarization of the liquid crystal which creates light or dark pixels on the display.

These pixels are arranged to create characters or graphic images. This type of display may be sunlight-readable and may have a backlight, which allows it to be viewed in dark areas.

Beautiful, complex images: All of our TFT modules are full-color graphic displays. Unlike standard monochrome character displays, you can create complex images for an imaginative user experience.

Thin and light: These are ideal display modules for handheld devices, communications equipment, information displays, and test and measurement equipment.

Single Supply: Most of the TFTs use an integrated controller with built-in voltage generation so only a single 3.3v supply is needed for both the panel power and logic voltage.

Many of the LCD controllers on board our graphic LCD display modules also include a CGROM (character generator ROM) which allows for easy character information as well as full bit-mapped graphic information to be shown.

Some of the graphic LCD displays have the ability to render graphics in grayscale, enabling you to show images and elements of your UI (user interface) with more depth and definition.

Because OLEDs are emissive, these displays can always be used in dark environments. There is usually a software command or hardware setting that will allow OLEDs to be dimmed.

Some OLED displays are bright enough to be sunlight readable–these models will typically take more current and may have a shorter rated lifetime. Additionally, OLEDs have extremely wide viewing angles.

What makes OLEDs useful for display construction is that they can be fabricated in bulk. Using OLED fabrication techniques, all the diodes can be made at the same time, at a much lower cost. OLEDs also come in a wide variety of colors.

STN Blue background with White Edge-lit backlight, bottom (or 6:00) viewing angle, Transmissive (negative), RoHS Compliant. Available in both 3V or 5V power supply options.This display has a wide temperature range: -20° Celcius to +70° Celcius which equates to (-4° Fahrenheit to +158° Fahrenheit).

STN (super twisted nematic) provides a sharper image and wider viewing angle than TN (Twisted Nematic). The cost for STN if approximately 5% higher than TN. STN is an ideal fluid for outdoor products that need to be read at various angles. The Transmissive polarizer is best used for displays that run with the backlight on all the time. This polarizer provides the brightest backlight possible. When you have a need for a bright backlight with lower power drain, transmissive is a good choice.

Focus LCDs can provide many accessories to go with your display. If you would like to source a connector, cable, test jig or other accessory preassembled to your LCD (or just included in the package), our team will make sure you get the items you need.Get in touch with a team member today to accessorize your display!

Focus Display Solutions (aka: Focus LCDs) offers the original purchaser who has purchased a product from the FocusLCDs.com a limited warranty that the product (including accessories in the product"s package) will be free from defects in material or workmanship.

20x4, STN, Yellow background color, LED, Yellow/Green array backlight, Bottom view angle, Wide temp, Transmissive (positive), with Pins, RoHS Compliant, Controller Driver ST7066-0A

STN (Super-twisted Nematic) provides a sharper image and wider viewing angle than TN (Twisted Nematic). The cost for STN if approximately 5% higher than TN. STN is an ideal fluid for outdoor products that need to be read at various angles.

The Transmissive polarizer is best used for displays that run with the backlight on all the time. This polarizer provides the brightest backlight possible. When you have a need for a bright backlight with lower power drain, transmissive is a good choice.

Focus LCDs can provide many accessories to go with your display. If you would like to source a connector, cable, test jig or other accessory preassembled to your LCD (or just included in the package), our team will make sure you get the items you need.Get in touch with a team member today to accessorize your display!

Focus Display Solutions (aka: Focus LCDs) offers the original purchaser who has purchased a product from the FocusLCDs.com a limited warranty that the product (including accessories in the product"s package) will be free from defects in material or workmanship.

NHD-19232WG-BGGH-V#T | Monochrome Graphic Module | 192x32 Pixels | Transflective LCD | Green Backlight | STN (+) Positive Gray Display | Built-in Positive Voltage | Non-Stocked

Newhaven 192x32 graphic Liquid Crystal Display module shows dark pixels on a bright green background. This transflective LCD Display is visible with ambient light or a backlight while offering a wide operating temperature range from -20 to 70 degrees Celsius. This NHD-19232WG-BGGH-V#T display includes built-in positive voltage. It has an optimal view of 6:00, operates at 5V supply voltage and is RoHS compliant.

Easily modify any connectors on your display to meet your application’s requirements. Our engineers are able to perform soldering for pin headers, boxed headers, right angle headers, and any other connectors your display may require.

Choose from a wide selection of interface options or talk to our experts to select the best one for your project. We can incorporate HDMI, USB, SPI, VGA and more into your display to achieve your design goals.

NHD-19232WG-BGGH-V#T | Monochrome Graphic Module | 192x32 Pixels | Transflective LCD | Green Backlight | STN (+) Positive Gray Display | Built-in Positive Voltage | Non-Stocked

Newhaven 192x32 graphic Liquid Crystal Display module shows dark pixels on a bright green background. This transflective LCD Display is visible with ambient light or a backlight while offering a wide operating temperature range from -20 to 70 degrees Celsius. This NHD-19232WG-BGGH-V#T display includes built-in positive voltage. It has an optimal view of 6:00, operates at 5V supply voltage and is RoHS compliant.

Easily modify any connectors on your display to meet your application’s requirements. Our engineers are able to perform soldering for pin headers, boxed headers, right angle headers, and any other connectors your display may require.

Choose from a wide selection of interface options or talk to our experts to select the best one for your project. We can incorporate HDMI, USB, SPI, VGA and more into your display to achieve your design goals.

The Displaytech 162K series is a lineup of 16x2 character LCD modules. These modules have an 85x30 mm outer dimension with 66x16 mm viewing area on the display. The 162K 16x2 LCD displays are available in STN or FSTN LCD modes with or without an LED backlight. The backlight color options include yellow green, white, blue, pure green, or amber color. Get a free quote direct from Displaytech for a 16x2 character LCD display from the 162K series.

With innovations continuing in the realm of device-based aesthetic procedures, more and more beauty device equipped with color LCD display. And Smart TFT LCD is particularly suitable for cosmetics equipment.

With more than 25 years expertise of  LCD modules, We manufacture monochrome TN STN FSTN LCM, COG LCD, TFT LCD display, TFT color LCD, graphic LCD module and character LCD displays. If you have any questions, please feel free to contest us.

Crystal Run Microtlectronics Co. Ltd.Established in 2006, Crystal Run Microelectronics Co.. Ltd, is a professional manufacturer and exporter which is committed toresearching, manufacturing, and seling small&medium size LCD display. Headquartered in Shen zhen,having ourselfe factory and established Crystal RunTechnology Co. Ltd. as a branch in 2016. We have over 300 employees and manufacturing base covers an area of 40,000 square meters in Liuan. With wel- equipped facilities and excellent quality control throughout all stages of production, our products are extremely stable which enable us to guarantee total customer satisfaction.

Our main products are segment LCD, character LCD, graphic LCD, COG LCD, TFT LCD, OLED, backlight and other LCD related products.All of Our products comply withinternational quality standards,and have passed IS09001, I5014001,Rohs, SGS certifications. As a result of our high quality products and outstanding customer service,we have gained a global sales network reaching Europe,USA,Canada, South Asia etc.

An import function allows additionally to use Windows fonts. With the FontEditor it is easy to generate for example Cyrillic, Greek and Arabic fonts. The preview function shows immediately the size and style in simulation window. When the testboard EA 9780-2USB is connected to the USB port, you can see the character (or any predefined text) live on the display which is plugged-in!