In the process of using household appliances, people can obtain the real-time working state of household appliances through the display area. Many of these display areas are made of dot matrix LCD. For example, the display area of microwave ovens, refrigerators and other household appliances, as well as the indoor environment detection equipment mounted on the walls of the family. Dot matrix LCDS make the operation of these appliances visible. In the process of using household appliances, people can obtain the real-time working state of household appliances through the display area. Many of these display areas are made of dot matrix LCD. For example, the display area of microwave ovens, refrigerators and other household appliances, as well as the indoor environment detection equipment mounted on the walls of the family. Dot matrix LCDS make the operation of these appliances visible. The development of the medical industry is inseparable from the emergence of a variety of precision body examination and treatment instruments, doctors to understand the patient's physical condition depends on the display part of the instrument, this department is also more use of dot matrix LCD liquid crystal display. Dot matrix LCD can better meet the requirements of medical use from the point of view of display clarity and imaging color. It is not difficult to see from the functional details of dot matrix LCD LCD screen, dot matrix LCD screen is a strong universal access and control, for a variety of situations can also better meet the needs of the use. Of course, the use of dot matrix LCD LCD screen includes but is not limited to the above several, at present scientific research, aviation and other precision instrument fields have also begun to use dot matrix LCD.