According to the switching principle, touch switches are classified into resistive touch switches and capacitive touch membrane switches. Capacitive touch-sensing technology has become the mainstream of touch-sensing technology. In terms of button solutions, it can improve the overall appearance of products.

Membrane switch is an operating system that integrates button functions, indicating elements, and instrument panels. It consists of four parts: panel, upper circuit, isolation layer and lower circuit. When the membrane switch is pressed, the contacts of the upper circuit are deformed downwards and are in contact with the plates of the lower circuit. After the finger is released, the contacts of the upper circuit bounce back, the circuit is disconnected, and the circuit triggers a signal.

As a manufacturer engaged in the membrane switch panel manufacturing industry, I have been engaged in ink color mixing for many years in the early stage, and have accumulated some preliminary experience. I would like to share my opinion on membrane switch panel color matching technology. If it is incorrect, please criticize and correct.

The membrane switch of the water purifier adopts a touch screen membrane switch. The touch screen membrane switch has two colors of black and gold. There are four LED lights on the touch screen membrane switch, which are PP indicator light, UFC indicator light, RO indicator light, and smart WAIFI indicator. lamp.

Shearing can give rough shapes and outlines. The basic cutting method is suitable for a wide variety of substrates, usually up to 2mm thick. Shears are capable of handling a wide range of sizes and are able to provide precise repeatable dimensions. Large machines are capable of cutting hundreds of kilograms of substrate per hour.

PCB hot air leveling technology is a relatively mature technology at present, but because its process is in a dynamic environment of high temperature and high pressure, the quality is difficult to control and stabilize.

The five common surface treatment processes for PCB are hot air leveling, organic coating, electroless nickel/immersion gold, immersion silver and immersion tin.

What aspects of printed circuit board design need attention: manufacturing requirements, drilling design, circuit design, solder mask design, character design, and shape design.

When quality issues arise during PCB manufacturing, it is often because the substrate material is the cause of the problem. Material issues due to variations in laminate quality occur between manufacturers using different batches of raw material or products made with different pressing loads.

According to the premise of the actual electronic product and the actual circuit board, the circuit board is reversely analyzed by means of reverse research and development technology, and the technical documents such as the PCB file, the bill of materials (BOM) file, and the schematic file of the original product, as well as the PCB silk screen production Files are restored 1:1.

PCB component layout is the key to achieving a good RF design, the most effective technique is to first fix the components located on the RF path, and orient them to minimize the length of the RF path, so that the input is far away from the output, and as far as possible Ground separates high-power circuits from low-power circuits.

The renaissance of PCB functional test technology is an inevitable result of the miniaturization of surface mount devices and circuit boards. With the rise of online testing and the relatively slow development of functional testing technology will regain the momentum of development.

PCB circuit board design refers to the production of circuit boards at the lowest possible cost through the design of schematic drawings and circuit layout.

PCB stencil mainly has the following factors that will affect the quality of PCB stencil. The production process of steel mesh includes: chemical etching method, laser cutting method, electroforming method.

The quality of PCB layout and routing will directly affect the performance of the circuit. Engineers need to understand the most basic principles and skills about PCB layout and routing, so that they can make their designs perfect.

With a high-density FPGA in a PCB design, there are likely to be many challenges that lie ahead of a well-designed schematic. Including hundreds of input and output ports, operating frequency exceeding 500MHz, and solder ball spacing as small as half a millimeter, all of these will lead to undue interaction between design units.