Introduction
No industrial and specialist application can do without displays, and no display can do without the LCD module. Thus, it is evident to everyone involved in the life cycle of the displays (distributors, purchasing agents, etc.) that temperature is unquestionably one of the most important parameters of the LCD module. In the design and construction of LCDs, the capability to protect display screens from extreme temperatures is crucial to avoid them influencing the performance, durability and reliability of the display screens.
1. Presentation of LCD Type Displays
Since LCD is practically used in consumer electronics and industrial applications, its features, such as being energy efficient and offering excellent image resolution, are dominant. Temperature is one of the external elements that can affect display performance.
2. Tolerances of LCDs at Different Temperatures Ranges
Thus as mentioned earlier LCDs used liquid crystal materials and thus have such sensitivity to temperatures. These materials change their alignment response when an electric signal is sent through them and perform differently below a certain temperature range, but in optimal temperature ranges such a drastic impact can be avoided.
2.1 Liquid Crystals: Temperature Sensitivity
Properties of liquid crystals are mainly related to temperature. That being said a display needs to be specified at certain temperature values to prevent extremes such as extremely high temperature might interfere with the readability of a display or extremely low temperedge might affect the responsiveness of a screen.
2.2 Temperature Operational and Storage Ranges
| Hua Xian Jing Standard temperature range | |
|---|---|
| Working temperature Range | -20°C - 70°C(-4°F - 158°F) |
| Storage temperature Range | -30°C - 80°C(-20°F - 176°F) |
| Hua Xian Jing OEM LCD temperature range | |
| Working temperature Range | -30°C - 80°C(-20°F - 176°F) |
| Storage temperature Range | -40°C - 90°C(-40°F - 194°F) and more |
| optimal temperature | |
| Working temperature Range | 0°C - 50°C(32°F - 122°F) |
Properties of liquid crystals are mainly related to temperature. That being said a display needs to be specified at certain temperature values to prevent extremes such as extremely high temperature might interfere with the readability of a display or extremely low temperedge might affect the responsiveness of a screen.
3. The performance of LCD is dependent on temperature.
The LCDs which are present in high temperature, and low temperature also work differently. As one can help to identify the most optimal display for its intended purpose, it is important to know these differences.
3.1 Effects of Low Temperatures
Properties of liquid crystals are mainly related to temperature. That being said a display needs to be specified at certain temperature values to prevent extremes such as extremely high temperature might interfere with the readability of a display or extremely low temperedge might affect the responsiveness of a screen.
3.2 Effects of Low Temperatures
The liquid crystal’s alignment is disrupted at high temperature, so they also tend to be less light and 1 contrast. The LCDs could be delayed to too much heat and result in degradation of extendable parts such as warping or burning.
4. Thermal Expansion and LCD distortion
These LCD modules consist of a number of different materials such as glass and plastic that will expand or contract with the change of temperature. The thermal movements will result in such misalignments also of the liquid crystals and consequently influence the quality of the images. These effects can be able to reduce such with good design considerations.
4.1 Impact for Polarizing Films and LCD Alignment when Extreme Temperatures are Present
The polarizing films of the LCDs can have hot or cold temperatures, which place a lot of stress and can cause image distortion or the shift in orientation of the polarized light. The LCD performance can be at stake in terms of the display resolution and color reproduction.
5. LCD operating temperatures as specified in General Manufacturer's Recommendations
Essentially, there are two types of LCDs based on their working temperatures: standard and extended range.
- Standard LCD: LCDs working at standard temperature can be stated at 0 to 50 of operating temperature because they are used for applications in which temperature variations will not exceed that.
- Extended Temperature LCDs: But these being more rugged in nature, they have operating range of -30 to +80 degree Celsius which makes them suitable for Military, Industrial and automotive applications.
Tip: If it is a normal use environment, you do not need to worry about the temperature limit of the LCD display. If it is working in a special factory (such as a steel mill), please consult us before using it.
6. I had questions and answers, many of which were asked commonly.
Q1: At what temperature is optimal for standard LCDs?
With this temperature availability, standard LCDSs are said to perform best between 0 and 50 degrees celcius and no wear will occur on the LCD, lifetime will be maximized and performance will be optimum.
Q2: Why can the LCD screen be damaged by extreme cold?
At cold temperatures the liquid crystals will respond slowly and the display transitions will slow down or the images will lag and sometimes the screen will become frozen.
Q3: What is thermal shock, and what influences LCDs?
Thermal shock is a condition where there are large swings in temperature causing a stress in the LCD materials which can crack or change the internal frame of the screen.
Q4: When do you choose an LCD to use within a wide temperature range?
It is crucial to pick an LCD depending on the conditions the device is to be used and to opt a temperature grade LCD such as automotive grade or industrial grade LCDs.
Q5: Will extended temperature range LCDs be utilized on automotive displays?
They are the best suitable for Automotive application and are used in hot interiors of the vehicles and cold ambient conditions.
Q6: What are LCDs' industry sector maintenance practices?
Inspections with some manufacturer recommendations and temperature condition monitoring can be used to maintain the productivity of industrial LCDs.
