Static electricity is easy to break down the capacitive screen, electrostatic adsorption film is the biggest killer, especially commonly used film!
Author:Yu Binbin Time:2021-06-08 12:27 Browse(173)
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Post:# B0 D0 L- K, d" M0 m$ s&A: Z8 a * G & T% P2 o (] 0} 6 R) o0 f! I static electricity can easily break through the capacitive screen... Although the glass on the surface of the capacitive screen mobile phone has undergone certain antistatic treatment, it does not mean that it can resist the static electricity of the human body in winter, and many people like to stick a low-quality screen paste on it which is easy to produce static electricity 3 {0 s$ G9 ?: I  h$ d2 A; X # P6 n & D-B capacitive touch screen uses the current induction of human body to work.

Static electricity is easy to break down the capacitive screen, electrostatic adsorption film is the biggest killer, especially commonly used film!

the capacitive touch screen is a four layer composite glass screen.
the inner surface and interlayer of the glass screen are coated with a layer of ITO (coated conductive glass), and the outermost layer is a thin layer of silica glass protective layer. The ITO coating is used as the working surface, and four electrodes are led out from four corners, The inner layer ITO is used as the shielding layer to ensure a good working environment.
when the finger touches the metal layer.
a coupling capacitor is formed between the human body electric field, the user and the touch screen surface. For high-frequency current, the capacitor is a direct conductor, So the finger sucks a very small current from the contact point.
the current flows out from the electrodes on the four corners of the touch screen respectively.
and the current flowing through the four electrodes is proportional to the distance between the finger and the four corners. The controller can get the position information of the touch point by accurately calculating the proportion of the four currents.
the position information of the touch point can be obtained4 a* m$ l* N# L; N9 m6 qAdvantages of S6 P: O capacitive touch screen: 5 U.
k & X5} 'Z x # k7f~Compared with resistive touch screen and electromagnetic induction board,The capacitive touch screen shows better performance.
because it can be sensed by touch.
it is easy to use.
moreover, the contact between finger and touch screen is almost not worn.
the performance is stable, and the service life is up to 30 years after mechanical test.
in addition.
the whole product is mainly composed of a PCB with only one highly integrated chip, with few components, Good consistency and high yield.
! P 0 t {- t;}% C( p+ O1 ~: J6 V5 ]& S" {/ DDisadvantages of capacitive touch screen: 6 S9 X "O; R: ') P4 L1 W: GThe use of capacitive touch screen on the iPhone, which represents the trend of fashion, undoubtedly further confirms its advantages.
however,
there are many shortcomings, and the capacitive touch screen also faces the following challenges: as the human body becomes a part of the circuit, the human body becomes a part of the circuit, Therefore, the drift phenomenon is quite serious; the performance of capacitive induction input technology when inputting or controlling point targets (such as clicking the phone number on the soft keyboard or inputting Chinese and English characters) on small and medium-sized flat panel displays needs to be improved; the performance is not stable enough when the temperature and humidity change sharply, so it needs to be calibrated frequently; it is not suitable for metal cabinets; when there is inductance and magnetic induction in the outside world, the touch screen may be damaged at a high cost3 a9 }/ _ 4 A5 {* m$ v%I / [-] 0 N; @ / H1 S9 D / o it can be seen from this.
at present, most of the stickers use the principle of electrostatic adsorption to increase the bonding strength and quality of the stickers, but because of this reason, the static electricity directly acts on the capacitive screen, which may temporarily lose its sensitivity. In the long run, the small 8 will be worried,Static electricity can easily break through the capacitive screen.
although the glass on the surface of the capacitive screen mobile phone has undergone certain anti-static treatment,
it does not mean that it can resist the static electricity of the human body in winter, and many people like to stick a low-quality screen sticker on it which is easy to produce static electricity Here to remind you, if there is such an example, quickly correct+ c+ f4 D# J) [2 N9 Z6 q3 X% o* P" \  m% w" m4 J; u- g1 h6 u ﹣ Q2 U:? 3 F (P) the current touch screen is mainly divided into two kinds of screens, one is "capacitance screen" and the other is "resistance screen" (a $N-M ᦇ M & U1} y)* |; k  J2 y/ Y4 J+ bCapacitive screen wants to be called "hard screen", like several mainstream mobile phones, such as Motorola MS, Apple iPhone HTC, dopda BlackBerry 9500, our beloved c8500, etc(J9 r! Q9 T / h) the usage rate of capacitive screen is increasing, and most of the new high-end touch-screen mobile phones use capacitive screen. The difference between capacitive screen and resistive screen is not mentioned here. This paper focuses on how to take good care of the screen, and explains in detail some maintenance knowledge of capacitive screen and some precautions in the process of use.
(U Q: I; J. z) s (V "J (I)2 y+ E$ u* n- o- h+ oFear of "high" temperature: the "high" temperature here is not baking with fire.
it is the temperature of about 40 degrees, which may cause the capacitive screen to drift. If you stay at this temperature for a long time, the capacitive screen will turn up. Do not sunbathe or use it for a long time in the high temperature sun.
when the temperature reaches 40 degrees, the capacitive screen will drift3 x6 L7 m' ^$ y1 I( y5 E8 Y! |- c: @. |9 E( I. \+ U& e2 zFear of magnetic field: especially electromagnetic fieldIf the small magnet is put on the capacitive screen for a while, the capacitive screen will be temporarily invalid (it may also cause permanent damage). Don't get close to the speaker or the magnetic screwdriver and other items. When you get home, don't put the handy mobile phone on the speaker or the place with large magnetism.
9 J! D4 l S8 n '\ (b5b; u; t) v0 a3 a" _ - p+ F. _ 6 S9 e fear of static electricity: static electricity can easily break through the capacitive screen.
although the layer of glass on the surface of the capacitive screen mobile phone has undergone certain anti-static treatment,
it does not mean that it can resist the static electricity of the human body in winter, and many people like to stick a poor quality screen sticker which is easy to produce static electricity on it $ I* Z9 c( J8 I# Z( U: |% c'Y / X5 o * L2 E / J2 C0 @:' fear of unstable voltage: generally, when the finger contacts the capacitive screen, it will "absorb" a little current, and then the screen will evenly transmit power from four corners to the thumb position, and use this to do positioning, so the capacitive screen will "drift" or even fail when the transmission voltage is unstable If the power is less than 20%, it's better to charge it immediately.
when the power is less than 20%, it's better to charge it immediately# ^- T% D4 j+ b( t9 qO7 n '|# Z9 B2 {3P is afraid of conductive media such as oil and sweat: covering the screen will form a conductive layer.
this will cause the screen to drift, wash it by hand, wipe it dry, and then use it.
get out of the pen quickly.
clean the screen often, and don't bring a shower room when taking a bath in winter.
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Get a gold coin.
leave.
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