News

Touch Screen Phone Resistance Touch Screen And Capacitive Touch Screen Which Is Better?



Touch Sensitivity

1, the resistance touch screen: the need to use the pressure of the screen layer of contact, you can use your fingers (even with gloves), nails, stylus and other operations. Support stylus in the Asian market is very important, gestures and text recognition where are valued.

2, capacitive touch screen: from the charged finger surface of the most subtle contact can also activate the screen below the capacitive sensing system. Non-living objects, nails, gloves are invalid. Handwriting recognition is more difficult.

Accuracy

1, resistance touch screen: the accuracy of at least a single display pixels, with a stylus can be seen. Easy handwriting recognition, help in the use of small control elements under the interface to operate.

2, capacitive touch screen: the theoretical accuracy can reach several pixels, but in fact will be limited by the contact area of the finger. So that users can easily click on less than 1cm2 target.

cost

1, resistance touch screen: very low.

2, capacitive touch screen: different manufacturers of capacitive screen than the resistance screen 10% to 50%. This additional cost does not matter to the flagship product, but may make the medium-priced mobile phone discouraged.

Multi-touch feasibility

1, resistance touch screen: impossible, unless the restructuring of the resistor screen and the machine circuit connection.

2, capacitive touch screen: depends on the implementation and software, has been in the G1 technical demonstration and iPhone to achieve. G1 version of the 1.7T has been able to achieve the browser's multi-touch features.

Resistance to damage

1, resistance touch screen: the fundamental characteristics of the resistance screen determines its top is soft, need to be able to press down. This makes the screen very prone to scratches. The resistive screen requires a protective film and a relatively more frequent calibration. Advantageously, the use of plastic layer resistance screen device is generally more vulnerable, less likely to break.

2, capacitive touch screen: the outer layer can use glass. Although this is not indestructible, and may be broken under severe impact, but the glass should deal with daily rub and smear better.

clean

1, resistance touch screen: As you can use the stylus or nail to operate, it is not easy on the screen to leave fingerprints, grease and bacteria.

2, capacitive touch screen: to use the entire finger to touch, but the glass outer layer easier to clean.

Environmental adaptability

1, resistance touch screen: the specific value is not known. But there is evidence that the Nokia 5800 with resistive screen can work at temperatures between -15 ° C and + 45 ° C, and there is no requirement for humidity.

2, capacitive touch screen: a typical operating temperature between 0 ° to 35 °, requires at least 5% humidity (working principle is limited).

Sunshine visual effect

1, resistance touch screen: usually very bad, the additional screen level reflects a lot of sunshine.

2, capacitive touch screen using the body's current sensing to work. Capacitive touch screen is a four-layer composite glass screen, the inner surface of the glass screen and the interlayer are 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 face , Four corners lead to four electrodes, the inner layer of ITO for the shield to ensure a good working environment. When the finger touches the metal layer, the body electric field, the user and the touch screen surface to form a coupling capacitor, for high frequency current, the capacitor is a direct conductor, so the fingers from the contact point suction a small current. This current flows out of the electrodes on the four corners of the touch screen, respectively, and the current flowing through the four electrodes is proportional to the distance from the finger to the four corners. The controller calculates the touch current by calculating the exact ratio of the four currents location information.

Now, the use of capacitive screen a little more, because it is accurate, easier to support multi-touch and so on. But at the same time it is also more delicate, so we need to cherish, good maintenance.