Both are usually very good.
Two, touch sensitivity
1, resistive touch screen: need to use pressure to make contact with all layers of the screen, you can use your fingers (even with gloves), fingernails, stylus, etc. to operate. Stylus support is important in the Asian market, where gestures and text recognition are valued.
2. Capacitive touch screen: The slightest contact from the surface of an electrically charged finger can also activate the capacitive sensing system underneath the screen. Non-living objects, fingernails, gloves are invalid. Handwriting recognition is more difficult.
Three, precision
1, resistive touch screen: accuracy of at least a single display pixel, with a stylus can be seen. Easy handwriting recognition, helps to operate in the interface using small control elements.
2. Capacitive touch screen: theoretical accuracy can reach several pixels, but in practice will be limited by the finger contact area. So much so that it is difficult for users to accurately click on targets smaller than 1cm2.
Four, cost
1, resistive touch screen: very cheap.
2, capacitive touch screen: different manufacturers of capacitive screen prices than resistive screen 10% to 50% more expensive. That extra cost doesn't matter for flagships, but it may discourage mid-priced phones.
V. Multi-touch feasibility
1, resistive touch screen: not possible, unless the restructuring of the resistive screen and the machine's circuit connection.
2, capacitive touch screen: depends on the realization of the way as well as the software, has been in the G1 technology demonstration as well as on the iPhone. 1.7T version of the G1 has been able to realize the multi-touch characteristics of the browser.
Six, damage resistance
1, resistive touch screen: the fundamental characteristics of the resistive screen is determined by the top of the soft, need to be able to press down. This makes the screen very susceptible to scratches. Resistive screens require protective film as well as relatively more frequent calibration. On the plus side, resistive touchscreen devices that use a plastic layer are generally less fragile and less likely to break.
2. Capacitive touch screens: the outer layer can be made of glass. This is less indestructible and could potentially shatter under severe impact, but glass copes better with everyday bumps and smudges.
Seven, clean
1, resistive touch screen: because you can use a stylus or fingernail to operate, it is less likely to leave fingerprints, grease and bacteria on the screen.
2. Capacitive touch screen: you have to touch it with your whole finger, but the glass outer layer is easier to clean.
Eight, environmental adaptability
1, resistive touch screen: the specific value is not known. However, there is evidence that Nokia 5800 with resistive screen can work normally at temperatures from -15°C to +45°C and has little requirement for humidity.
2. Capacitive touch screen: Typical operating temperatures are between 0° and 35°, and require at least 5% humidity (limited by the principle of operation).
9. Sunlight visibility
1. Resistive touch screen: usually very bad, the extra screen level reflects a lot of sunlight.
2. Capacitive touch screens work by utilizing the current sensing of the human body. Capacitive touch screen is a four-layer composite glass screen, the inner surface of the glass screen and sandwich each coated with a layer of ITO (coated conductive glass), the outermost layer is a thin layer of silica glass protective layer, ITO coating as a working surface, four corners of the four electrodes lead to the four corners of the inner layer of ITO for the shielding layer in order to ensure a good working environment. When the finger touch on the metal layer, the human body electric field, the user and the surface of the touch screen to form a coupling capacitance, for high-frequency current, capacitance is a direct conductor, so the finger from the point of contact to suck a very small current. This current flows from the electrodes on the four corners of the touch screen, and the current flowing through these four electrodes is directly proportional to the distance from the finger to the four corners, and the controller derives the positional information of the touch point through the precise calculation of the ratio of these four currents.
Trend tends to use capacitive screen, personal recommendation to buy capacitive screen, but capacitive screen is good, accurate point, easier to support multi-touch, but we all know that the good things are generally more expensive, so the maintenance has become a problem, so the following is the maintenance of capacitive screen
1.First of all, let's understand the capacitive screen
Principle of capacitive touch screen That is: the use of their own body's own bioelectricity, the capacitive screen on the surface of the formation of a low voltage (rest assured that up to 0.1V are less than the voltage) to change the capacitance of the capacitive screen localized areas of the capacitance value, and capacitance screen corners of the IC sensor calculates capacitance value changes in the area and the distance between the corners, so as to determine the location of the key.
Capacitive screen is formed by a four-layer composite glass layer molded together, each glass layer of the inner surface layer and the sandwich have a layer of ITO conductive material to induce a voltage to form a current to change the regional capacitance value, so that the four corners of the IC to determine the coordinates of the induction region location
General maintenance:
1. Capacitive screen is generally to be affixed to the film, and to affix the good point of the film (double-layer film). In line with ESD standards
2. capacitive screen regular cleaning, the use of computers with liquid crystal cleaning fluid (can not use alcohol, furniture cleaning fluid)
3. the use of the process does not use fingernails or capacitive pen, the general light touch, do not pressure
4) in accordance with the theoretical design to be in the monthly as long as the screen to rest for a day, haha, this is not mandatory
At the same time, we must pay attention to the following events:
1. The choice of protective film: try not to use ordinary protective film, because the ordinary protective film is made of PET material, this material generally produces a high electrostatic (instantaneous discharge can reach 1000V), so often after the film to see the phone has a black spot or localized areas of inductive bad, that is, the static will be the liquid capacitance screen of your capacitor to breakdown. Capacitor to the breakdown, so the general film to be used with "anti-static", "ESD" film, generally recommended to use the OK8 film, or film attention in a professional store to paste, because there are in addition to the static electricity equipment.
2. After bathing as little as possible to contact, because at this time the bioelectricity is low, it is difficult to sense, to avoid because of this phenomenon caused by your misjudgment of the screen is damaged, there are women who come to the time of the next few days, when you cry and nose is also the same as the reason
3. Try not to touch the screen corners, because the corners of the four corners of the electrode sensing IC, belonging to the hard area, often squeezed will result in the sensing line breakage
4. p>4. Screen belongs to the resin material, will be dissolved in acids and alkalis, alcohols, lipids (that is, alcohol, furniture cleaner, oil)
5. Avoid placing the phone in the chassis, CRT, refrigerator (placed on the 48 hours, the screen is finished), the middle of the ITO conductive material can easily be magnetized to become a TTO material, resulting in a high impedance, the touch becomes very insensitive
6. Try not to expose the phone in the place of minus 10 degrees, ITO material solidification, and then squeeze the screen with your hand, it will cause internal damage to the phone
Precautions to say back, but also have to talk about the advantages of capacitive screen, the use of the advantages of not much to say, the structure of the structure of a little bit to say:
Not afraid of water, unlike the resistive screen is not afraid of water
Not afraid of high temperatures
Not afraid of impact (of course, without damaging the screen)
Not afraid of bright light (resistive screen in the sun will slowly change the resistance value, haha)
Protective film on the induction sensitivity is very small (resistive screen is a little thicker sticker on the complete lack of induction Oh)