Is there any big difference between multi-touch mobile phones and resistive touch screens? Is there any impact on use?

Types of touch screens: According to different sensing methods, touch screens can be roughly divided into four categories: resistive, capacitive, infrared, and ultrasonic. Among them, resistive and capacitive technologies currently have the most promising market prospects, and it may be difficult for other technologies to catch up in the short term.

The difference between resistive screen and capacitive screen

Resistive touch screen is commonly known as "soft screen" and is mostly used in mobile phones with Windows Mobile system; capacitive touch screen is commonly known as "hard screen", such as M8, Newly launched smart machines such as M9, NOKIA X6, HTC HD2, iPhone, G1 and MOTO use this screen quality. The resistive type is two layers of films that are insulated from each other. One layer has resistance and the other layer can be considered as a pure conductor. Press to make the two films come into contact. Change the resistor value potential.

Capacitive type uses your finger to sense the movement of charge on the screen. These charges come from the wires surrounding the touch screen, and the IC analyzes the current positioning caused by the movement of charges on its pins.

1. Indoor visual effects

Both are usually very good.

2. Touch sensitivity

1. Resistive touch screen: Pressure is required to make the layers of the screen come into contact. You can use fingers (even with gloves), nails, stylus, etc. Perform operations. Support for stylus is important in Asian markets, where gesture and text recognition are valued.

2. Capacitive touch screen: The smallest contact from the surface of a charged finger can activate the capacitive sensing system under the screen. Inanimate objects, fingernails, and gloves are not valid. Handwriting recognition is more difficult.

3. Accuracy

1. Resistive touch screen: The accuracy is at least up to a single display pixel, which can be seen when using a stylus. Facilitates handwriting recognition and facilitates operation in an interface using small control elements.

2. Capacitive touch screen: The theoretical accuracy can reach several pixels, but in practice it will be limited by the finger contact area. So that it is difficult for users to accurately click on targets smaller than 1cm2.

4. Cost

1. Resistive touch screen: very cheap.

2. Capacitive touch screen: Capacitive screens from different manufacturers are 10% to 50% more expensive than resistive screens. This extra cost doesn't matter for flagship products, but it may be prohibitive for mid-priced phones.

5. Multi-touch feasibility

1. Resistive touch screen: Impossible unless the circuit connection between the resistive screen and the machine is reorganized.

2. Capacitive touch screen: It depends on the implementation method and software. It has been implemented in G1 technology demonstration and iPhone. The 1.7T version of G1 can already implement the multi-touch feature of the browser.

6. Damage resistance

1. Resistive touch screen: The fundamental characteristics of the resistive screen determine that its top is soft and needs to be pressed down. This makes the screen very susceptible to scratches. Resistive screens require protective films and relatively more frequent calibrations. On the plus side, resistive touchscreen devices that use a plastic layer are generally less fragile and less likely to be dropped.

2. Capacitive touch screen: Glass can be used as the outer layer. While this won't be indestructible and may shatter under severe impact, the glass will handle everyday bumps and smudges better.

7. Cleaning

1. Resistive touch screen: Since it can be operated with a stylus or fingernails, it is less likely to leave fingerprints, oil stains and bacteria on the screen.

2. Capacitive touch screen: You need to use your entire finger to touch, but the outer layer of glass is easier to clean.

8. Environmental adaptability

1. Resistive touch screen: The specific value is unknown. However, there is evidence that the Nokia 5800 using a resistive screen can work normally in temperatures from -15°C to +45°C, and there are no requirements for humidity.

2. Capacitive touch screen: The typical operating temperature is between 0° and 35°, and a humidity of at least 5% is required (limited by the working principle).

9. Visual effects under sunlight

1. Resistive touch screen: usually bad, the extra screen layer reflects a lot of sunlight.

2. Capacitive touch screen: still very good.