Shenzhen Lunfeng Technology Co., Ltd
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As manifold as the application fields for capacitive touch sensors, are the technical solutions.
It is possible to implement a touch sensor in software with a Microcontroller together with some external components. The other end of the range is defined by fully integrated hardware products. All methods detect the change of capacitance, if an electrode is touched by a human finger.
Though this principle is the same for all methods, every approach feature specific advantages and drawbacks.
The paper presents various capacitive sensing approaches and discusses the properties current consumption, response time, cost and reliability of these methods.
An important aspect of touch user interfaces is reliable and robust operation. Since environmental parameters like humidity and temperature can influence the sensor behavior, it might be necessary to compensate these factors. Otherwise the system might become instable and false touches are detected. Methods to overcome this problem in actual applications will be presented in the paper. Since more and more applications feature a display, touch sensors in combination with screens are discussed in a third part of the paper. If the sensing electrodes are transparent, they can be placed
onto a display and the user is able to control a device by pressing virtual buttons directly on the screen. Capacitive touch screens offer some advantages compared to resistive solutions which are very common in the industry and widely used already.
Application:
1. Light industrial
2. Home appliances
3. Portable sport devices
4. Access control terminals
5. Portable medical devices
6. Personal computer and office
| Parameter | Options & Notes |
| Screen Size(Diagonal inches) | PCAP Capacitive touch panel 3"-86" Resistive touch panel 4"-10.4" |
| Product Construction | GG / G1F / GFF / PG / FG |
| Integration | Tape Bonding / Optical Bonding ( OCA, OCF & LOCA ) |
| Cover Lens | |
| Cover Lens Thickness | 0.55mm-10mm |
| Cover Lens Material | CS Glass, Gorilla Glass,Heat Tempered, PET, PMMA,Borosilicate, etc. |
| Additional Options | Silk screening, logos, cut outs, colored glass, etc. |
| Touch Controller & Interface | |
| Controller Location | COB / COF |
| Controller Type | Silicon Works / EETI / Weida / Ilitek / Goodix / Customer Supplied |
| Interface | I2C, USB, RS232, UART |
| Operating System | Windows XP, 7-10, Linux, iOS, Android |
| Performance Options | 2-50 touch points, palm rejection, water rejection, gloved use, gestural controls, active stylus, etc. |
| Product Enhancements | |
| Optical | Anti-Glare / Anti-Reflection / Mirror Finish / Dead Front |
| Others | Anti-Fingerprint / Anti-Shatter Film / Hard Coat |
| EMI Resistance | Metal Mesh / Firmware Tuning / EMI Filters |
FAQ:
Q1: Are you a factory or trade company?
A : Lunfeng is an manufacturer/factory. We pecialize in memrbane switch for 26 years, touch panel for 10 years.
Q2 : Is my switch file safe if I send it to you for manufacturing?
A : We respect customer's design authority and will never manufacture touch panel for someone else without
your permission. NDA is acceptable.
Q3 : Can you copy membrane switch/ graphic overlay / capacitive or resistive touch panel samples without file?
A : Yes, we can clone membrane switch/ graphic overlay according to your samples.
Q4 : What payment do you accept ?
A : TT/ Western Union.
Q5 : What's your shipping way ?
A : 1. We have our own forwarder to ship goods by DHL, UPS, FEDEX, TNT, EMS.
2. If you have your own forwarder, we can cooperate with them.
Q6 : How about the MOQ?
A : NO MOQ.
Q7 : What's your main market?
A : Europe, USA, Brazil, Russia, Turkey, Iran, Austrialia, Singapore...
