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The last article mainly talked about the HDMI line-making process. This article covers the HDMI line assembly.
HDMI type: According to different types of interfaces, it is divided into the following types.
Type A is the most commonly used interface. A type of flat TV or monitor is generally used. 19-pin construction
For Type B special applications, the bandwidth is equivalent to 2 times that of Type A. 19-pin construction
Type C Small devices such as DVs, digital cameras, etc.
Type D The smallest size is for mobile phones and small devices.
One of the most common is the Type A HDMI cable, which is also our company's flagship product.
The Type A HDMI cable is subdivided into four types.1. Standard HDMICable standard HDMI cable;
2. Standard HDMICable with Ethernet standard Ethernet HDMI cable
3. High Speed ​​HDMICable high speed HDMI cable;
4. High Speed ​​HDMICable with Ethernet high speed Ethernet HDMI cable;
5. StandardAutomotive HDMI Cable standard car HDMI cable.
The most common of these are Type 3 and Type 4 lines. Wires are printed on the outside to facilitate differentiation.
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After understanding the type of HDMI cable in general, I started to talk about HDMI assembly.
The first step: take off the outside.
The clothes you just put on will be taken off. That's right. It is also divided into several layers. The first floor is the outer black cover.
The removal of the outside is basically a manual operation. Each person holds a pair of scissors and removes the black outside of the head of the wire. (in order to respect personal privacy coded)
After the stripping is completed, the inside of the metal weave, aluminum foil, etc. will be exposed for further processing.
Part II: Laser Aluminum Foil
The stripped wire reveals aluminum foil. Within the foil is 5 strands. Each strand is covered with a layer of foil. The purpose of the laser is to reason that the laser shoots through the aluminum foil so that the worker can pull out the aluminum foil and expose the inside line. The workers below are laser-foiled aluminum foil.
After the laser is shown below. After the laser is stripped of aluminum foil, the lines inside each strand will spread out. You will see colorful lines, the purpose is to facilitate the workers to distinguish in the next step.
Part III: Cables
When there is a line card on the line, there are 19 card positions on the line. After the worker puts each line on the corresponding card position, it is fixed with an air pressure device.
The figure above shows the workers performing air pressure. Doing this kind of activity hurts the fingers of the head. Most workers wear hand-wound band-aids and it is very difficult. Praise them.
Step 4: Solder Assembly Connector
After arranging the wires, attach the connector and then solder the wire to fix it. The connector is bought by other companies, and the difference is larger. Some are gold-plated heads, and some are general ones. Gold-plated looks bright color, oxidation resistance, long service life, of course, the cost is greater.
The difference in color can be seen in the screenshot on the shopping website. HDMI head, contact points are golden, some are really gold-plated, a little bit of electroplating yellow. Non-true gold plated plugs have very low resistance to plugging in. For a long time, the oxidation will cause the signal to disappear or the screen will disappear.
The worker in the figure below is welding.
The inner mold is molded after welding. Workers use a molding machine and a mold to mount a black plastic head on the thread head. The figure below is a molding machine
Step 5: Product Inspection Packaging
A total of 3 tests will be performed to check the voltage resistance. HDMI is called hot plugging, but try not to plug and unplug the HDMI cable when it is powered on. Plugging and unplugging is the impact on your TV or player's HDMI module.
The worker inserts both ends of the line into the two ports of the detector. If the PASS is displayed on the detector, it is acceptable.
According to different requirements, packaging is divided into bare bags and laminations. The two pictures below show two different packages.
Either electronic products or electronic supplies are worth mentioning. The speed of replacement is very fast. I do not know where one day from a new product to defeat HDMI is also possible. But at present, HDMI is dominant in the market. Although DP has always competed with HDMI, their respective advantages are obvious. HDMI has the advantages of content protection, anti-theft copy technology in its specifications, and its application area is far more than DP. From game consoles, monitors, to TVs, DVDs, and HDMI are everywhere, so in terms of device support HDMI Is dominant. The biggest issue with HDMI is royalties. Everything in the world is complemented by spears and shields. What will happen in the future? Let us wait and see.