Ⅰ. The relationship between thickness and sensitivity
From the formula for calculating capacitance, we can know that the capacitance of the two key factors for the size of the area and distance, so the thicker the thickness of the cover plate, it will certainly affect its touch sensitivity. At present, several commonly used specifications of the cover plate has basically met the needs of customers, the impact on the customer experience is not significant.
Solution: the common thickness of several cover 0.4mm, 0.55mm, 0.7mm, 1.1mm, 1.5mm, 2.0mm. 0.4mm thickness of the customer choice is relatively small, because the strength of the cover can not reach the screen is easy to break, 0.55 ~ 1.1mm for the customer's common choices, does not affect the touch sensitivity, the strength of the cover can meet.
There are some unconventional projects, will choose 3.0mm, 6.0mm, 8.0mm, 10.0mm, 12.0mm and other thicknesses of the glass cover (according to the actual requirements of the customer to choose), these covers are relatively thick, but if you use a more special chip, the touch screen sensitivity can also be achieved to a certain extent.
Ⅱ. The specific impact
1. Signal attenuation: With the increase of the thickness of the glass cover, the touch signal may be subject to more attenuation in the transmission process, resulting in a weakening of the strength of the signal received by the touch chip, thus affecting the sensitivity and accuracy of the touch.
2. Response time: A thicker glass cover may increase the transmission distance of the touch command signal, resulting in a delay in the signal transmission process. This delay can make the user feel laggy when using the device, affecting the overall experience.
Ⅲ. In order to balance the relationship between the thickness of the touchscreen glass cover and sensitivity, the industry has adopted a variety of solutions:
1. Optimise materials: Adopting new types of materials to make glass covers, such as high-strength, high-transmittance glass materials, can improve touch sensitivity and durability while maintaining a certain thickness.
2. Adjust the chip algorithm: By optimising the algorithm of the touch chip, it can make up for the decrease in sensitivity due to the increase in the thickness of the glass cover to a certain extent.
3. Structural design: By optimising the overall structural design of the touch screen, such as adopting more advanced laminating technology, increasing the number of touch sensors and chips, etc., the sensitivity and response speed of touch can be further improved.
In summary, the thickness of the glass cover of the touch screen has a significant impact on the sensitivity. When choosing a touch screen, you need to weigh the relationship between thickness and sensitivity according to specific application scenarios and needs, and take corresponding solutions to optimise touch performance. If you don't know how to choose, you can contact us (sales03@wiwotouch.com), we have professional engineering can recommend the most suitable thickness solution for you.
Our universal touch screen size: Click