raspberry pi 3 lcd screen factory

-The 5 lcd touch screen raspberry pi USES industrial grade chip CYPRESS IC, which has strong anti-interference performance and can be used in a variety of complex application environments. Such as work well with 3-10mm thickness tempered glass, water, gloves, seawater, 5% saline and PC onside.

-The 5 lcd touch screen raspberry pi is a 10 points PCAP touch screen equipped with 720*1280 lcd display which is available to show the picture or video clearly with the comfortable and wonderful using experience.

-The 5 lcd touch screen raspberry pi: touch screen interface is I2C interface, but we can convert I2C interface into USB interface through USB converter; LCD screen interface is MIPI interface, and we can convert MIPI interface into H DMI interface through H DMI converter.

A: We have some mature projects cases and the best way is to connect the touch screen directly through USB interface to the Raspberry Pi or the orange Pi, and the display can be directly connected through HDMI interface, this way the whole solution can be implemented through plug and play.

Large size touch screen will be designed directly with USB interface, small size is general designed with IIC interface, so we will do is to provide the board which changes the IIC into USB. however, customers need to contact our technicians to check the configuration and software system.

For display, we can provide RGB to HDMI, LVDS to HDMI, MPI to HDMI, EDP to HDMI and other driver boards to realize the connection with Raspberry Pi and orange pi;

The essence of the touch screen is a sensor. At present, according to the type of sensor, the touch screen is roughly divided into four types: infrared type, resistance type, surface acoustic wave type and capacitive type.

The infrared touch screen is equipped with a circuit board frame in front of the display. The circuit board arranges infrared emitting tubes and infrared receiving tubes on the four sides of the screen to form a horizontal and vertical infrared matrix. When the user touches the screen, the finger will block the horizontal and vertical infrared rays passing through the position, so the position of the touch point on the screen can be determined. Any touch object can change the infrared ray on the contact to realize the touch screen operation. The infrared touch screen is not subject to current, voltage and electrostatic interference, and is suitable for some harsh environmental conditions. Its main advantages are low price, easy installation, no need for card or any other controller, and it can be applied to computers of all levels.

The main part of the resistive touch screen is a resistive thin film screen that fits well with the display surface. Two layers of OTI transparent oxide metal conductive layers are coated on the reinforced glass surface. Pressure sensing is used for control. When a finger touches the screen. The two conductive layers contact at the touch point, and the resistance changes. Signals are generated in the X and Y directions and then transmitted to the touch screen controller. The controller detects this contact and calculates the position of (x, y) and then operates according to the way of simulating the mouse. The resistive touch screen is not afraid of dust, water and dirt, and can work in harsh environments. However, because the outer layer of the composite film is made of plastic material, the explosion resistance is poor, and the service life is affected to a certain extent.

Surface acoustic wave is a kind of mechanical wave propagating along the surface of medium. An ultrasonic transducer is mounted on the corner of the touch screen. It can send a high-frequency sound wave across the screen surface. When the finger touches the screen, the sound wave on the contact is blocked, thereby determining the coordinate position. The surface acoustic wave touch screen is not affected by environmental factors such as temperature and humidity. It has high resolution, excellent scratch resistance, long service life, high light transmittance, and can maintain clear and bright image quality. It is most suitable for use in public places. However, dust, water and dirt will seriously affect its performance, which requires frequent maintenance to keep the screen clean.

This touch screen works by using the current induction of the human body. A layer of transparent special metal conductive material is pasted on the glass surface. When a conductive object touches it, the capacitance of the contact will be changed, so that the touched position can be detected. But there is no response when touched by a gloved hand or a hand-held non-conductive object because a more insulating medium is added. The capacitive touch screen can well sense light and fast touch, is scratch resistant, and is not afraid of dust, water and dirt. It is suitable for use in harsh environments. However, because the capacitance varies with temperature, humidity or environmental electric field, its stability is poor, its resolution is low, and it is easy to drift.