Difference between capacitive touch screen and resistive touch screen

Capacitive touchscreen:

Resistive touch screen:

Both the capacitive touch screen and the resistive touch screen control the LCD screen through touch. What is the difference between the two touch screens? The following explains in detail through nine aspects.

     First, the indoor viewing effect

             Two touch screens usually look good

      Second, the cost

           (1). Resistive touch screen: The market price is very low.

           (2). Capacitive touch screen: Each different manufacturer's capacitive touch screen is 10% to 50% more expensive than a resistive touch screen. This extra cost may not matter for flagship products, but it may make some mid-priced phones possible. Stop by.

      Third, damage resistance

           (1). Resistive touch screen: The absolute characteristics of the resistive screen determine that the top of the resistive screen is soft and needs to be able to be pressed. This makes the screen very scratch-prone. So resistive screens require protective films and more frequent calibration. The advantageous aspect of the resistive screen is that it uses a plastic layer that is generally not susceptible to damage and is less likely to break.

           (2). Capacitive touch screen: The outer layer can use glass material. Although this is not indestructible, and it is also possible to crack under severe impact, the glass is better for everyday rubbing and smudging.

     Fourth, touch sensitivity

           (1). Resistive touch screen: The pressure is required to make one touch on each layer of the screen, and the finger can be used to operate the screen using a finger (wearing a glove), a stylus, a nail, and the like. Support for stylus is very important for the Asian market, wherever text recognition and gestures are valued.

           (2). Capacitive touch screen: The finest contact on the surface of the charged finger can also activate the capacitive sensing system below the screen. Nails, gloves, and inanimate object touches are all invalid. It is more difficult to recognize handwriting.

     Fifth, the adaptability of the environment

           (1). Resistive touch screen: The specific value is unknown. However, there is evidence that the Nokia 5800 resistive screen can work normally at -15°C to +45°C, and there is no requirement for humidity.

           (2). Capacitive touch screen: The operating temperature can only be between 0° and 35°, and at least 5% humidity (limited by the working principle).

     Six, accuracy

           (1). Resistive touch screen: The minimum accuracy is to reach a single display pixel, which can be seen by using the stylus operation. Easy recognition of handwriting, helpful for operations when using the interface of small control elements.

           (2). Capacitive touch screen: In theory, the accuracy can reach several pixels, but in reality it is still limited by the finger contact area. As a result, it is difficult for the user to accurately click on a target of less than 1 cm2.

      Seven, multi-touch feasibility

          (1). Resistive touch screen: It is impossible unless the recombination machine is connected to the circuit of the resistive screen.

          (2). Capacitive touch screen: The key depends on its implementation and software. It has been implemented on the G1 skills demo and Apple. The 1.7T version of G1 has fully implemented the browser's multi-touch feature

     Eight, clean

          (1). Resistive touch screen: It should be possible to use nails and stylus to operate, so it is less easy to leave oil stains, fingerprints and bacteria on the screen.

          (2). Capacitive touch screen: It is necessary to touch with a finger, but the outer layer of the glass is easier to clean.

     Nine, visual effects under sunlight

          (1). Resistive touch screen: In general, it is very bad. The extra screen level reflects a lot of sunlight.

          (2). Capacitive touch screen: Still good.

     From the above 9 aspects, it can be seen that the advantage of the capacitive touch screen is the visual effect under sunlight, the feasibility of multi-touch, and cleanliness. The advantages of resistive touch screens are low cost, environmental adaptability, precision, and cleanliness.