lcd modules low temperature for sale

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Previously LCDs that operated in extreme cold or extreme heat required bulky built-in heaters and coolers in order to ensure performance. However, the proprietary liquid crystal used in the InfoVue Extreme Temp series eliminates the need for coolers and allowing Lumex to use low-power heaters. This makes the InfoVue Extreme Temp LCDs better able to perform in more hostile conditions.

InfoVue Extreme Temp LCD displays provide reliable, consistent high-quality performance from -40°C to +85°C , making Lumex LCD technology a viable solution for a growing number of applications. The growing demand for high performance LCD technology can be seen in military, freezer, gas pumps/fuel meters, non-automotive transportation, and nonclimate controlled facility applications.

Extreme Temp LCDs also offer significant visual performance benefits, providing full graphic capability and daylight visibility. When combined with LED backlighting technology, a wide range of color options are available. All InfoVue Extreme Temp LCDs are available with either a monochromatic screen with any color of LED backlight, or select negative image option with mono colored pixels and a black background.

InfoVue Extreme Temp LCD displays can be produced in sizes ranging from 8 x 1 to 20 x 4 character displays and 128 x 64 to 320 x 240 pixel graphic displays.

This is ultra low temperature (-25℃~10℃) 2.13 inch e-paper display with 212*104 resolution. It has 24 pins FPC connection, optional FPC connector, also communicated via SPI interface, with embedded controller(COG package) and on-chip stored waveform, supports black and white.

In view of so many advantages: ultra low temperature, near 180 degree view angle, readable under sunlight, GDEW0213V7LT is a very good choice for applications like:

Whether round, whether square or extreme small with 29x9mm only, the new OLED displays from DISPLAY VISIONS play their advantage for compact handheld applications: power saving, compact and with an extreme wide operating temperature of -40..+80°C range.

There are several industrial applications that require LCD displays to operate in extreme temperature environments such as in military, food processing, gas/fuel pumps, medical, manufacturing, and non-climate-controlled facilities, among others. Take note that typical monitors can only be used in environments with 0�C~50�C temperature range. UV exposure, moisture, and humidity also affect the overall temperature within a specific environment. iTech Company offers a range of LCD monitors that can function properly in a wide working temperature range from -30℃ to +80℃. These products are already proven and tested to maintain its original luminance under such temperatures.

While the range of operating temperature is a relevant consideration for the device to withstand extreme hot or cold environments, other factors must also be taken into account for the overall performance of the device. These includethe clarity of the image, environmental protection, LED backlighting, quality of the components, andvarious options available.

iTech Company’s products are equipped with these useful features to deliver great performance even in harsh working conditions. These are available in different monitor sizes and resolutions. It offers superior image quality with wide viewing angle. Some of the optional features include the touch screen functionality for interactive application and the level of brightness to ensure that the screen content is highly visible in all lighting conditions. Moreover, these wide operating temperature LCD displays are available in different types including open frame, panel mount, andchassis mount.

At low temperatures, the liquid crystal fluid maintains its viscosity, allowing the IC to refresh the data logic without any latency in the response time. At the high extreme of the operating temperature spectrum, the polarizer and adhesive materials are able to withstand the heat without warping the film and damaging the optical performance of the LCD module.

In addition to meeting the stringent quality requirements to withstand high temperature and humidity exposure, our displays also support “smart management” features, in form of a visual interface designed to help control the overall PV or EV application.

When we operate LCD display in an extremely low temperature environment, the screen may turn dim or go black and if it left in such conditions for extended periods, which may cause permanent damage to the display.

The LCD in cold temperatures may cause misreading because of the response time of LC (physical characteristics). It will turn slowly and make the screen overlap. (Figure 1)

See Figure1 (a), it shows a stable color screen before switching. Then, it will change to Figure1 (b) after switching. This overlapped situation is due to LC’s physical characteristic that it turns slowly at low temperature. After a while, the overlapped screen will become clear; however, you can still see the shadow beneath as Figure 1 (c); Figure 1 (d) is the final result after switching.

Typically, standard LCD modules provide a temperature range of -20°C to +70°C. To meet the need of customers, NEXT VISION DISPLAY has developed a series of wide temperature TFT LCD modules with operating temperatures ranging from -30°C to +80°C, and the maximum for some models can reach 85°C.

NEXT VISION DISPLAY developed LCD Heater to integrate with our TFT Display Module so that can show optimal view even in low temperature. For materials, heaters can be used with transparent resins, such as glass and poly-carbonate. Our LCD Transparent Heater is made of glass substrate, so we name it “Glass Heater”. It can not only improve the LCD image sticking issue efficiently, but also have heat and humidity resistance advantage.

While directly current flows in ITO’s resistance, it will turn electrical energy into heat. The smaller resistance is (the higher consumption power is), the more heat it can generate. The concept is similar to Traveling immersion coil. When we plug in Traveling immersion coil, the current will flow in metal and generate heat to boil water.

As the result, it shows 4.3 inch TFT LCD Module display functionally under normal operating conditions. However, there is an overlapping at low temperature, because of LC’s physical characteristics. From this experiment, we know that overlapping can be solved by turning on Glass Heater.

NEXT VISION DISPLAY provide different thickness of Glass Heater from 0.4 mm to 1.1mm and it can easily attach to our TFT LCD Module and IPCT (PCAP). Apart from installing convenient, it is specially designed to assure optimal quality for our clients. Using connector and supply stable current to control TFT LCD Module. (Figure 3)

In summary, when selecting an LCD display for an extreme temperature environment, the first thing designers need to evaluate is the operating environment: temperature, moisture, and humidity. Additionally, they also need to consider what will be displayed on the screen: display performance, clarity and correct information. With all these factors, it will help select the best display for the application.

However, NEXT VISION DISPLAY Glass Heater is designed to deliver optimum performance in low temperatures in order to accommodate for diverse industrial applications. It also ensure safe operation of display keeping control panels operational in inclement conditions or clearing surfaces of unwanted snow, ice, or condensation. In particular, it is possible to integrate with TFT LCD Display.

It’s an ideal solution for TFT display to operate in cold environment. NEXT VISION DISPLAY integrate the TFT LCD module, LCD transparent heater (Glass Heater) and heater sensor to control and monitor temperature smartly. With our controller system, it can precisely control the heater on or off and then rapidly adjust the temperature of TFT-LCD module. Also, it can reduce display power consumption. Moreover, all series of TFT-LCD module can be integrated with heater control board to make it automatic temperature controlled and would not be subjected to its maximum operating temperature range as stated in the specifications.

36614 thermostat lcd display products are offered for sale by suppliers on Alibaba.com, of which lcd modules accounts for 6%, temperature instruments accounts for 2%.

A wide variety of thermostat lcd display options are available to you, You can also choose from industrial, household and indoor thermostat lcd display,as well as from oem, odm, and obm thermostat lcd display,and whether thermostat lcd display is tn, or lcm.

That is the reason the LCD looks lighter (blur) when the temperature drops, while the background appears (ghosting) when the temperature increases. There are some ways to improve the contrast with the temperature change, such as choosing the liquid crystal fluid changes less with temperature (Flat Fluid), or adding heater at the low temperature. Below, we will focus on using electronics to compensate the temperature change to increase the contrast.

For most applications this variation in contrast is tolerable over the “normal” temperature range of 0°C to +50°C. Most LCD modules are available with an extended temperature range option which allows the display to operate from -20°C to +70°C. The changes in LCD contrast temperature compensation are NOT usually tolerable over this wide a range of temperatures, which means a way of adjusting the contrast voltage as the ambient temperature changes should be provided.

First of all, we want to optimize the contrast at room temperature, this is normally done during product development on the prototype unit. A LCD contrast potentiometer is connected between the appropriate power supply rails (Vdd and Vss for single supply, and Vee and Vdd for higher voltage LCD modules).  The wiper of the pot is connected to Vo (LCD bias voltage input), see Fig. 3.  The pot is adjusted to obtain the desired LCD appearance. Depending on the optimum contrast requirement, we can either leave the LCD contrast potentiometer in the design, or measure the voltage on the Vo pin and select a pair of resistors to produce this voltage in the production units.

As the temperature decreases, the LCD fluid requires a higher operating voltage in order to maintain a given optical contrast. One way to provide for this is to give the user control of the contrast. This is a simple solution but normally it is not practical.

Fig. 5 uses a current buffer whose drive current is dependent on a thermistor (negative temperature coefficient). This thermistor, RT1 should be placed as close as possible to the LCD module to sense the ambient temperature experienced by the LCD.

The Vee level is dependent on the requirements of the LCD module. Extended character displays need -7.8V on VOat 25ºC or -2.8V with respect to ground (Vss). Note that Vee and VO are measured with respect to VDD supplies to the LCD. Typically, Vee is 25% greater than VO. During development, Vee is variable to optimize contrast.

Because of its transparency and thinness, it can be incorporated into LCD module, such as between liquid crystal and backlight, and between touch panel and liquid crystal.

We support you from the product design stage. We will customize the design such as heater size & shape, wiring, and temperature control, according to the customer’s request.

Whether supplying the heater film alone or as part of the module including the laminated cover glass, touch sensor and LCD display Nissha can support. Our project and QA management experience for film touch sensor programs seamlessly extends to the inclusion of optically clear film heater from development through to mass production.