How to choose a suitable industrial display touch method
2020-10-19
There are many ways to touch industrial displays, so how do companies choose the most suitable method? Today, let’s take a look at the differences between various touch methods and their respective advantages and disadvantages, so that we can choose products with better cost performance. The editor of Zhixianda will take you to understand the difference between capacitive screen and resistive screen?
One, what are the differences between capacitive screen and resistive screen
1. Cost: Capacitive screens are more expensive. Capacitive screens from different manufacturers are about 10% to 50% more expensive than resistive screens, while resistive screens are cheaper.
2. Power consumption: Industrial display capacitive screens consume more power than resistive screens.
3. Visual effects: The visual effects of capacitive screens and resistive screens are very good indoors, but the visual effects are obviously different outdoors, especially under sunlight. Capacitive screens are better, but resistive screens reflect sunlight due to the extra screen layer, making the visual effect poor.
4. The feasibility of multi-touch: The multi-touch of the capacitive screen is achievable, depending on the method of implementation and the software used, and it has been implemented. The multi-touch of resistive screen cannot be realized.
5. Touch sensitivity: Capacitive screens work by using the current induction of the human body, so any non-conductive materials such as nails, gloves, etc. cannot be recognized by the capacitive sensing system below the screen, but resistive screens work through pressure sensors. It can be touched with any object and it supports stylus.
6. Damage resistance: The outermost layer of the capacitive screen is a protective layer of silica glass, which may be broken under severe impact. The outermost layer of the resistive screen is a thin film, which needs to be pressed down for pressure sensing, and the resistive screen supports a stylus, which makes the screen prone to scratches, requires a protective film and relatively more frequent calibration, but it is not easy than the capacitive screen break.
7. Cleanliness: Capacitive screens need to be touched with fingers, which is easy to leave stains on the screen, but because the outermost layer is a glass layer, it is easy to clean. The resistive screen supports operations such as stylus and nails, so it is not easy to stain the screen.
8. Accuracy: The capacitive screen can reach a few pixels in theory, but in fact, due to the limitation of the finger contact area, it is difficult for us to accurately click on targets smaller than 1cm. The accuracy of the resistive screen is at least as high as a single display pixel, which can be seen when using a stylus. It is convenient for handwriting recognition and helps to operate under the interface with small control elements.
9. Environmental adaptability: The operating temperature of the capacitive screen is between 0°C and 35°C, and at least 5% humidity is required. There is no specific value for the operating temperature of the resistive screen, but it has been confirmed that the resistive screen can work normally at a temperature of -15°C to 45°C, and the resistive screen has no requirements for humidity.
2. The following points are the selection methods, which can be selected according to their needs:
If the industrial display only uses basic functions, a resistive screen should be used, because the cost of the resistive screen is lower;
2. If the industrial display will often hit it during use, you should choose a resistive screen, because the capacitive screen is easy to break under impact;
3. If the working temperature of the industrial display fluctuates greatly, and it exceeds 00-350, you should choose a resistive screen, because the working temperature of the capacitive screen is 00-350, and the working effect of the capacitive screen outside this range is not good, and the working temperature of the resistive screen Relatively wide range;
4. If the industrial display needs to use the multi-touch function, you should choose the capacitive screen, because the resistive screen cannot support this function at present;
5. If the industrial display needs a longer standby time, you should choose a resistive screen, because the capacitive screen consumes more power than the resistive screen;
6. If the industrial display needs to use a stylus, you should choose a resistive screen, because the working principle of the capacitive screen causes the capacitive screen to not support the stylus;
7. If the working environment of the industrial display is relatively dry, you should choose a resistive screen, because the capacitive screen has humidity requirements for the working environment, but the resistive screen does not;
8. If the industrial display is often used in the sun, you should choose a capacitive screen, because the resistive screen reflects in the sun and affects its use;
In summary, the choice of touch methods for industrial displays is here. The main thing is to understand the advantages and disadvantages of capacitive touch and resistive touch.
If you don’t know which touch method to choose for your product application, you can go online If you contact our manual customer, we will arrange the most professional development engineer to give you the most suitable advice. If you are interested in learning about our products, please contact our online customer service, we will recommend suitable products to you according to your needs.
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