As for the display used by small household appliances, there are three kinds of LED digital tube that can be used on the market at present: one is LED digital tube, segment code LCD screen and dot matrix LCD screen. Let's talk about the pros and cons of these three displays from a relatively objective perspective:
In the past, small appliances would show some ED digital tube consisting of seven pen segments. Numbers and letters can be shown through the light and shade of pen segments. Only 0 to 9 and some English letters can be displayed. It's very simple and low cost. Another control can be achieved by pressing buttons
As the mainstream display of small household appliance industry, segmentally coded LCD has many applications. It works by lighting up certain numbers or characters in fixed positions. It is relatively simple, low power consumption, and displays more content than the nixie tube. The cost is also relatively low. It is a fixed content and cannot be changed at will. And because of the screen size, the amount of content is fixed
There are also dot-matrix LCD screens, which are a relatively inexpensive solution with good display. A lattice screen is made up of many pixels in a range. Lattice LCD pixels are composed of fixed size points. These points are used to calibrate the square posts of the train. 128 × 64 consists of 128 ~ 64 points in the horizontal direction. It can display rich colors and animation, but with lower pixels, which is also the most common display scheme for small appliances.
The lattice screen can be used on small appliances to display simple patterns, numbers and times, such as the countdown display of microwave oven time. Previously, its solution was the nixie tube or segment code screen. When the water dispenser or air conditioner is faulty, the E1 and E2 codes are displayed. You can query the fault cause and solution by referring to the description. If the dot matrix screen can display text, you can prompt: please replace the filter element, please add snow and other direct solution to the problem, more intuitive and convenient.