3.5 Inch Capacitive Touch Screen for Medical Treatment
Capacitive touch panels don't require as much pressure as resistive ones, but they do need you to be conductive!There are two different versions of capacitive touch panels: surface capacitive and projected capacitive. Both of them work by detecting a change of capacitance on the screen.
SURFACE CAPACITIVE
The surface capacitive is a simple one: there's a thin layer of electrodes which lies under a glass surface covered with a protective layer. Four electrodes on the corner of the panel are providing electric voltage to the film. When a conductive material (such as a human finger) is near the electrode film, there's a change of the electrostatic capacity. Measuring these changes, the controller figures out where a touch has occurred.
The surface capacitive is often used on big surfaces, since the touch sensing isn't really accurate.
PROJECTED CAPACITIVE
This one is a little more complex. Underneath the glass and protective cover lies a pattern of electrode layers. This pattern forms an X,Y plane which the controller uses to calculate a touch event. Forming the pattern results in more accurate touch sensing, which is why this type of touch panels are used on mobile phones and similar small devices.
The parameter(specification) of 3.5 inch capacitive touch screen
| Model Number | CSK035FF098 |
| Type | PCAP |
| Structure | Glass+Film+Film |
| Cover Glass Dimension | 94.84±0.1*58.6±0.1*0.7±0.05MM |
| Sensor Size | 89.59±0.2*58.1±0.2*0.425±0.05MM |
| Cover Lens VA | 74.04±0.2*49.56±0.2MM |
| ITO Glass Thickness | 0.425MM |
| Cover Glass Thickness | 0.7MM |
| Total Thickness | 1.125±0.1MM |
| Surface Hardness | ≥6H |
| Transparency | ≥85% |
| Operating Temperature | –20℃~60℃ 20-85% RH |
| Storage Temperature | –30℃~70℃ 10-95% RH |
| IC | FT5336 |
| Interface of CTP | I2C |
| Touch Points | 5-10 points |
| Touch Accuracy | ±1.0MM |
| Linearity | ±1.0MM |
| OEM/ODM | we can make this product as per your design and put your logo on |
Product Feature
Our Company
Optical Bonding
Our Equipment
Contact us
Name:Sunny He
Tel:0086-596-2607595
Email:sales09@wiwotouch.com
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