Product Description
Customize CTP/CTP+ LCD DISPLAY 1.3-65 inch
Full range of standard product in stock (no need customization)
| Model Number | HX0401801 |
| Brand | Grahowlet |
| Size | 4.0 inch |
| Interface Type | IIC/USB |
| Structure | G+G |
| Controller IC | GT970 |
| Touch Points | 10 points |
| Transparency | ≥85% |
| Surface Hardness | ≥6H |
| Operating Environment | -10℃ ～ 60℃,≤85% RH |
| Storage Environment | -20℃ ～ 70℃,≤85% RH |
| Power Supply Voltage | 2.8V ～ 3.3V |
| Outline Dimension | 61.24(W)x107.37(H)x4.45(D) mm |
| Viewing Area | 52.44(W)x87(H) mm |
| Support Systems | Windows/Android/Linux etc. |
| Warranty | 1 year |
Our Company
Hangzhou Grahowlet Technology is a comprehensive service provider of capacitive touch screen module and TFT LCD display for various industries. In order to meet different requirements of worldwide customers, Grahowlet supply all kinds of product structures such as G + G, G + F (G + F + F ),P + G, etc. and various technical support programs such as Cypress , Atmel, EETI,FocalTech, Goodix etc. according to different application environments. We provides solutions that match all customers' touch screen needs and create products based on multiple technologies. We are committed to supply global customers with first-class products and professional technical services in the touch industries. Our products are of high stability and anti-interference performance and used in various industries with complicated and difficult conditions.
Technical Q&A
Q: Many industrial customers used resistive touch screens or untouched ones before, for the upgrade of projects, they may be the first time to deal with capacitive screens and don't have much understanding of the adjustment and functional application of capacitive screens, how did you serve this kind of customers in the early stage?
A: There are some customers who have just get involved in the capacitive screen products. In view of this situation, we usually cooperate in two situations: First, if the project schedule is rather tense, we usually provide drive-free solutions directly. We can convert the IIC interface of the capacitive screen into the USB interface for direct application, we can also convert the display screen into various interface like VGA or HDMI for direct application, so that customers can save early time in early stage of development; Second, if the project schedule is relatively abundant, we usually provide professional debugging data to the customer technicians, and then the specialized technicians in our company wil assist the customer in technical debugging. We have a professional technical team to do a good job of technical services in this area.
Q: What is the principle of capacitive touch screen to achieve multi-touch?
A: When the finger touches the capacitive screen, it affects the coupling between the two electrodes near the touch point, thus changing the capacitance between the two electrodes. When detecting the mutual capacitance, the lateral electrodes sequentially emit excitation pulse signals, and all the longitudinal electrodes receive signals at the same time, so that the capacitance values of all the intersections of the lateral and longitudinal electrodes can be obtained, that is, the capacitance of the two-dimensional plane of the entire touch screen. According to the two-dimensional capacitance change data of the touch screen, the coordinates of each touch point can be calculated. That is, the real multi-point coordinates can be calculated to realize multi-touch;
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