7 zoll touchscreen raspberry pi:
7 zoll touchscreen raspberry pi adopts the air bonding process, the capacitive touch screen is Glass sensor+Glass cover lens structure, the IC solution Cypress, display resolution is 800*480, and the LCD glass is TN material and not suitable for the optical bonding process, it is more suitable for the product design of the embedded installation structure of resistance touch solution upgraded to capacitance touch screen. It has a wide range of applications. Touch interface can be supplied with USB and display interface can be provided with HDMI, through which it can be conncted to raspberry pi by plug and play.
TPM | Model Number | HX0701702 V2.0 |
Brand | Grahowlet | |
Size | 7.0 inch | |
Operating Temperature | -20℃ ～ 70℃ | |
Storage Temperature | -30℃ ～ 80℃ | |
Outline Dimension | 165.00(W)x100.00(H)x7.73(D) mm | |
Viewing Area | 154.88(W)x86.72(H) mm | |
Active Area | 154.08(W)x85.92(H) mm | |
Support Systems | Windows/Android/Linux etc. | |
Warranty | 1 year | |
CTP | Interface Type | IIC |
Material/Structure | G+G | |
Controller IC | Cypress | |
Touch Points | 10 points | |
Transparency | ≥85% | |
Surface Hardness | ≥6H | |
Power Supply Voltage | 2.8V ～ 3.3V | |
TFT | Resolution | 800x480 |
Interface Type | RGB | |
Luminance | 300 cd/m² | |
Viewing Angle | 70/70/50/70 |
Reliable Service
Packing or Shipping
Technical Question
Q: What are the reasons for the air-bonded capacitive screen module to generate Newton's rings? How to solve the problem?
A: The reason for air bonding screen module generating Newton's ring is that the surface of capacitive touch screen and the LCD screen are not parallel enough, and the issue is generally caused by the collapse when the capacitive touch screen being pressed.
To improve this situation what we need do is:
first, increase the TP intensity
second, increase the gap between TP and LCM.
Third: to use anti-Newton ring polarizer or the anti-Newton ring TP;
Q: What is the reason for the capacitive screen module turn white screen when it fall to the ground after being assembled into a finished product?
A: The reasons are probably: IC cracking, poor FPC binding, structural interference LCD cracking, etc.; IC is broken when falling, FPC bonding not good, structural interference, LCD broken…
IC broken is because it is impacted by external force, for example, first, there is something on the casing or there is something inside the LCM that hit the IC here; second is that the edge that the IC sits on is deformed for some reason, causing the IC height to exceed the backlight surface and then break when falling;
the countermeasure is to check the components near the IC that may impact it, to leave it as far as possible from the IC or add some protection for IC;
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