The difference between active and passive capacitive pens

The specific summary is as follows:
1. Different nib materials
The pen tip of the active capacitive pen uses POM (Polyacetal), which is smooth and has high strength. The diameter of the pen tip is less than or equal to 3mm, with high accuracy and a shape similar to a pencil.
The pen tip of the passive capacitive pen uses soft rubber with good conductivity and a soft touch. The diameter of the pen tip exceeds 6mm, with low accuracy and a shape similar to a plastic rod.
2. Different principles
The active capacitive pen adopts an electronic circuit structure, with the pen tip emitting high-frequency current and the touch screen receiving the current signal emitted by the capacitive pen, thereby obtaining the coordinates of the capacitive pen on the screen.
The passive capacitive pen does not have a circuit inside, and the capacitance of the touch screen is changed by contacting the conductive material with the touch screen, which is equivalent to a thinner finger.
3. Different accuracy
The active capacitive pen emits stable high-frequency current at the tip of the pen, and the current is concentrated at a certain point on the screen, resulting in very high accuracy.
The passive capacitive pen is like a large conductor placed on the screen, with extremely low accuracy and the possibility of accidental contact.
4. Different energy consumption
The active capacitive pen has a built-in battery that needs to be charged, with limited battery life, and the pen body cannot be plugged into a large battery.
The passive capacitive pen does not require a battery, and the thick pen tip is also durable enough, with theoretically unlimited battery life.