First of all, what are the previous advantages of resistive screens?
1. The screen is not affected by dust, water vapor and oil, and can be used in a lower or higher temperature environment. What about now? Capacitive screen wet hand control and there are quite good solutions, and the anti-oil and anti-fingerprint coating is not exclusive to high-end phones.
2. The resistive touch screen uses pressure sensing, which can be touched with any object, even with gloves, and can be used for handwriting recognition. Nowadays, the operation with gloves can be captured by the ultra-sensitive touch IC, and the accuracy of the current capacitive screen is no longer what it used to be.
3. The cost of resistive touch screen is relatively cheap due to mature technology and low threshold. Due to mass production, it is not an exaggeration to say that the capacitive screen is currently Chinese cabbage.
At present, the development of touch technology of capacitive screens is advancing by leaps and bounds, and it is no surprise that the resistive screens are leaving the market. In contrast, the shortcomings of resistive screens are fatal. First of all, because of its multi-layer structure, it cannot be used as incell, and the light transmittance is extremely poor. Secondly, the resistive touch screen is a kind of sensor, which is basically a structure of thin film and glass. The adjacent surfaces of the thin film and the glass are coated with ITO (nano indium tin metal oxide) coating. ITO has good conductivity and Transparency. When touch operation, the ITO of the lower layer of the film will contact the ITO of the upper layer of the glass, and the corresponding electrical signal will be transmitted through the sensor, and then sent to the processor through the conversion circuit, which is converted into the X and Y values on the screen through calculation to complete the point. The selected action is displayed on the screen, so that the outermost layer cannot be made of tempered glass or other hard materials. Therefore, the resistive screen is not covered by the film waiting for the whole body to be damaged. After all, the hardness difference is too far, and the screen will be directly after the broken screen. Scrapped (the capacitive screen can continue to be used as long as it does not damage the touch layer).
So the real reason for the elimination of resistive screens is summarized:
1. Too many screen results are too complicated, which is not conducive to making a thin and light body.
2. The light transmittance is too poor, which means that the brightness of the screen must be increased to compensate, which will cause battery problems.
3. Since most of them do not support multi-touch (two-point touch resistive screen accuracy is a problem, and there is no mass entry into the market), it cannot meet the interactive requirements of today's UI. (When two points are pressed at the same time, the pressure on the screen becomes unbalanced, causing errors in the touch, so the realization of multi-touch is more difficult.)
