WEIDA ILITEK ITO Film 21.5 Inch PCAP Touch Screen
21.5inch PCAP Touch Screen With USB Touch Controller With Low Resistance ITO Film
This 21.5" GFF capacitive touch panel, which uses SP- ITO film to make touch sensor, SP-ITO is a thin film material that can conduct electricity and behave as optically transparent. It is an extremely important optoelectronic material. It is widely used in P-cap Touch Panel,Smart Window,EMI etc.
Compared with other materials, SP-ITO has good electrical conductivity, good light transmission, excellent flexibility, high cost performance, good stability, can make super-narrow bezel, flexible touch screen and no moiré issue.
Technical advantages: Provide new solutions for flexible curved touch panel, touch panel with narrow bezel, and super-large touch panel.
For flexible and large-size touch fields:it can effectively control optical defects and reduce phase difference, and with higher yield and process stability, it's more suitable for accuracy design, and with better curling performance (more than 100,000 bending tests). The silver paste loading process can be omitted for low impedance (patent applied)
Capacitive Touch Panel:
Capacitive Touch Panel is to use the working current of induction of human body.The operational principle of the projected capacitive touch panel: There are two layers of the ITO layer under the surface of glass. This ITO layer respectively forms the electric field of X axis and Y axis, which can keep balance by crossing the surface of the class. Once the fingers approach the glass surface, the fingers and the electrode X axis or Y axis will form a new electric field, which can make the local capacitance change. Then the controller will determine the location based on capacitance changes.
Basic specification of Capacitive Touch Panel :
| Size | 65 inch |
| Total thickness | 3.5±0.3mm |
| Outline of Cover Lens | 525*312+ 0/-0.3mm |
| Outline of ITO film Sensor | 478*269.6±0.3mm |
| Viewing Area | 11431.5*806.1 ±0.3 mm |
| Active Area | 479.14*270.61±0.5 mm |
| Interface | USB |
| Input voltage | DC5V |
| Response time | 10ms |
| Report rate | 100 HZ |
| Input method | Hand writing or capacitive pen |
| Transmittance | ≥85% |
| Package list | 21.5inch Touch panel,controller board and USB cable |
| Controller: | ILITEK, WEIDA, EETI, Silicon Works etc.(Optional) |
| Cover glass thickness: | 1.1mm,1.8mm,2mm,3mm,4mm,5mm,6mm (Optional) |
| Cover glass treatments: | AG, AR, AF, AE (Optional) |
| CTP interface: | USB |
| Operating system: | Win7, Win8, Win10, WCE, Android, Linux, XP |
| Working temperature and humidity: | -20°C~70°C,20~85% RH, non-condensing |
| Storage environment and humidity : | -30°C~80°C, 20~85% RH, non-condensing |
| Transparency | ≥85% |
| Response time: | <10ms |
| ESD Air discharge: | 8KV |
| ESD Contact discharge: | 4KV |
| Pen hitting life: | ≥10,000,000/point |
| Pen sliding Durability: | ≥500,000 times |
| Finger Touch life: | ≥35,000,000 times |
| Certifications: | CE, FCC, Rohs |
| Aspect ratio: | 4:3 |
| Report rate: | 100HZ |
| Input method: | Finger or capacitive pen |
| Warranty: | 1 Year |
Advantages of SP-ITO Touch Screen
1.. Realize process simplification: The new material application process can directly simplify more
than half of the traditional process, and the yield rate is greatly improved.
2. Cost down:
a. The application of new materials can eliminate all silver paste manufacturing processes and reduce the production cost of products.
b. The application of new materials can reduce the investment of production
personnel by more than half compared with the traditional production process.
Competitive advantages of Touch-China:
1. 21-year experience in designing and manufacturing touch panels.
2. Have strong research team for both software and hardware and provide before and after-sale service.
3. Cooperate with excellent customers and suppliers.
4. Have long-term cooperation with excellent IC suppliers all over the world.
5. Have good guarantee for product quality and lead time.
6. Our touch panels of large sizes and touch panels for automobile are in a leading position in touch panel industry.
SP-ITO material parameter
| SP-ITO-10 | Unit | Spec | Test Method |
| Resistance | Ω/□ | 10 | ASTM D 991 |
| Transmittance | % | 86 | ASTM D1003 |
| Haze | % | 0.42 | ASTM D1003 |
| b*(T) | % | 1.4 | ASTM E1164 |
| Uniformity | % | 2.5% | (Max.-min.)/ 2•Ave |
| Warping | - | bending radius of 20mm | 125umPET is 100000 times |
| Adhesion | - | 5B | ASTM D3359 |
| Dyne(HC) | - | 40 | Arco pen 5s
|
SP-ITO FF sensor Reliability test
| Item | Test Condition | Spec | Test request | Check Point |
| Before testing | First | Result | Second | Result | Third | Result | Four | result |
| Low temperature | -40℃ | 504H | OK/OK | 0h | 72h | Pass(0F/5) | 144h | Pass(0F/5) | 336h | Pass(0F/5) | 504h | Pass(0F/5) |
| High temperature | 65℃/90%RH | 504H | OK/OK | 0h | 72h | Pass(0F/5) | 144h | Pass(0F/5) | 336h | Pass(0F/5) | 504h | Pass(0F/5) |
| Low and high temperature | -40℃~85℃ | 300cycle | OK/OK | 0cycle | 50cycle | Pass(0F/3) | 100 cycle | Pass(0F/3) | 200 cycle | Pass(0F/3) | 300 cycle | Pass(0F/3) |
| UV testing | 0.35±0.02W/(m2·nm) at340nm | 470h | OK/OK | 0h | 235h | Pass(0F/3) | 470h | Pass(0F/3) | / | / | / | / |
| Salt water testing | The whole surface is coated with salt water and placed in a high temperature and high humidity chamber | 168h | OK/OK | 0h | 24h | Pass(0F/5) | 72h | Pass(0F/5) | 168h | Pass(0F/5) | / | / |
Installation way of Touch Panel
Note 1: In order to make a touch panel work normally, please make sure that the host device is grounded.
Note 2: All environmental characteristics listed above should be less than 1 atmospheric pressure.
Note 3: The touch panel must be assembled with LCD panel by VHB or other materials, the control board should be fixed on LCM bezel or other mechanical parts of the system and then be grounded; In ESD test, the touch panel should work normally and there should be no damage to the appearance, when no static electricity discharges. However, irregular changes like display flickering are acceptable when static electricity discharges.
Note4: The touch panel may be damaged functionally or work unstably if the panel are not be grounded though your system to earth.
Note5: In order to make a touch panel work normally, power supply or power adapter has to conform to IEC 62684.
PCAP drawing:
Capacitive Touch Panel:
Capacitive Touch Panel is to use the working current of induction of human body.The operational principle of the projected capacitive touch panel: There are two layers of the ITO layer under the surface of glass. This ITO layer respectively forms the electric field of X axis and Y axis, which can keep balance by crossing the surface of the class. Once the fingers approach the glass surface, the fingers and the electrode X axis or Y axis will form a new electric field, which can make the local capacitance change. Then the controller will determine the location based on capacitance changes.
