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tft capacitive touch manufacturers take you to understand the basic structure of capacitive touch screen


The tft capacitive touch manufacturer tells you that the structure of the capacitive touch screen is mainly to coat a transparent film body layer on the glass screen, and then add a protective glass outside the conductor layer. The double glass design can completely protect the conductor layer and the sensor, and at the same time, it is transparent The light rate is higher and it can better support multi-touch.

tft capacitive touch
The capacitive touch screen is plated with long and narrow electrodes on the four sides of the touch screen, forming a low-voltage AC electric field in the conductor. The tft capacitive touch manufacturer tells you that when touching the screen, due to the electric field of the human body, a coupling capacitance will be formed between the finger and the conductor layer, and the current from the electrodes on the four sides will flow to the contacts, and the current strength is inversely proportional to the distance from the finger to the electrode, located at After touching the screen, the controller will calculate the proportion and strength of the current, and accurately calculate the position of the touch point. The tft capacitive touch manufacturer tells you that the double glass of the capacitive touch screen can not only protect the conductors and sensors, but also effectively prevent external environmental factors from affecting the touch screen. Even if the screen is stained with dirt, dust or oil stains, the capacitive touch screen can still accurately calculate the touch. Location.
The tft capacitive touch manufacturer tells you that because the capacitance changes with the contact area and the dielectric of the medium, its stability is poor and drifting often occurs. This kind of touch screen is suitable for the debugging stage of system development.

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