The liquid crystal display screen of the gas station is the human-machine interface for recording the real-time data of the refueling process. If the gas station suddenly loses power or fails during the refueling process, the display screen of the general manufacturer will not be able to display, and the previously displayed data will be unknown, causing the gas station and the car owner to be unable to settle correctly. Therefore, the Xinhongtai HOTLCD R&D team designed an LCD display module that does not require an external backup power supply or battery. It can keep displaying the current screen data after the power of the device is lost, realizing the function of display data storage protection after power failure, preventing the loss of display data, and obtained a patent certificate, which has been recognized by the majority of gas station equipment manufacturers. This technology can also be widely used in instruments and meters with uninterrupted display requirements.