| Customization: | Available |
|---|---|
| Screen Size: | 20-30 Inches |
| Aspect Ratio: | 16:9 |
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21.78 Inch Surface Capacitive Touch Screen
Operation Principle:
Capacitive touch panel works through body's current induction. When finger is on or close to touch panel surface, due to body electric field, the user and touch panel surface forms one coupling capacitance.
For high frequency current, capacitance is direct conductor, then fingers suck a small current from the contact point, through amplifying and accurately calculating this current signal,
Finally the controller works out the touch point position.
Surface Capacitive Touch Screen Technology:
| Comparison between Capacitive Touch Panel and Resistive Touch Panel | |
| Capacitive Touch Panel | Resistive Touch Panel |
| Touch (no pressure needed) | Press (pressure activated) |
| No calibration required | Calibration required (resistance drift on film) |
| Better Durability, No significant aging | Display turns white when aging |
| Handles high temperature | Film breaks down at high temperature |
| Better Transparency, less optical power needed | Low transmission |
| Can be vandal-proof (thick glass/plastic) | Easily damaged (thin top layer) |
| Scratch Resistant (with glass) | Prone to scratch |
| Stylus not a must | Need stylus, easy to lose |
3M Surface Capacitive Screen list
| Serial number | Number | Size(inch) | company | top level number | US Number | AA size(mm) | AV size(mm) | |
| 198 | 45 | 21.78 | 3M | 17-9721-227 | 98-0003-3490-8 | 453.57*257.11 | 495.22*284.69 | |
| 199 | 21.78 | 3M | 17-9721-227 | 98-0003-3489-0 | 453.57*257.11 | 495.22*284.69 |
Many kinds of size can be Customized.
The structures explanation:
* P+G=PET+Glass (cover lens is PET and touch sensor is glass).
* G+G=Glass+Glass (cover lens is glass and touch sensor is glass).
* G+F+F=Glass+Film+Film (cover lens is glass and touch sensor is film+film).
* CG= Cover Glass, OD= Outside Dimension, VA= Viewing Area, AA=Active Area.
| Lens's Features > Shape: Irregular and hole > Color: Silk printing, Logo > Glass brand: AGC, Corning, CSG, ETC > Treatments: AG, AR, AF, Anti-explosion > Thickness: 0.55mm, 0.7mm,1.0mm, 1.1mm, 1.8mm, 2.0mm, 3.0mm, 4.0mm |
Sensor Features > Sensor material: Glass, Film,Film + Film > Thickness:0.125mm,0.4mm, 0.55mm, 0.7mm, 1.1mm > FPC: Shape design optional > IC: Focaltech, Goodix, Cypress, EETI > Interface: IIC, USB, RS232, SPI |
Assembly > Optical Bonding with OCA > Double faced adhesive tape |
Office/Workshop/Main Product:
Head Sun Co., Ltd is a high-tech enterprise and a manufacturer, which is specialized in R&D and manufacturing LCD screen, Touch screen,HMI,Stretched bar, Square monitor, Flat & Curved monitor, Hair Dryer.
Our company was established in 2011 and located in Shenzhen with 200 employees & an area of 3,600 square meters for factory.
We own 8 product lines of G+G,G+F,G+F+F and 6 lines of CTP+LCM full-fit bonding. Our annual output reaches 500,000 pieces.
Besides the conventional standard products, we also offer custom OEM ODM services, such as help customers to offer product designs and customize touch screens and TFT LCD modules according to customer requirements and drawings and data sheets.
At the same time, we can bond the touch screens to the LCD through G+G, G+F, G+F+F, and self-capacitance. We can realize the product range of the touch screen structure and the structure of the liquid crystal display used for high definition, on-cell and in-cell LCD screens.
Exhibitions:
Packing & Shipping:
FAQ:
Q 1. What service do we offer?
Answer: We are a professional manufacturer of LCD Screens, Touch Screens, Hair Dryers, we can help you design and do customized service.
Q 2. How long could I get a reply to my inquiry?
Answer: Buyers will receive a reply within 12 hours.
Q 3. What is the delivery time?
Answer: For samples:15-20 days after getting the sample fee (Professional Custom-made)
For cargo:25-30 days after the receipt of funds.
Q 4. What is the payment term?
Answer: T/T, Paypal, Western Union, etc.
For samples: payment in advance.
For mass production: 50% deposit and 50% balance before shipment.
Q 5. How do you control the quality of the items?
Answer: Each product will be strictly tested one by one before shipping out.
Q 6. How long is the warranty?
Answer: Generally the warranty period is one year. It depends on different products.
Q 7. How is after-sales service?
Answer: Our sales & engineer will provide sustained support and guidance on the technique.
Q 8. What method of packaging do you use?
Answer: The packing with anti-static bag+ bubble bag +foam box +strong outer carton.
Q 9. What kind of transportation do you offer?
Answer: For small orders & quantities, the goods will be shipped by express like DHL, TNT, Fedex, UPS, and EMS with the customer's account.
Adopting Air or sea and freight collect from the buyer for cargo with large packing.
Touch Screen Photos:
Curved Monitor Photos:
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