A liquid crystal display is one of commonly-used devices in an industrial field and especially in a vehicle field and is used for displaying the parameters and the operation condition of a vehicle. Some vehicles used for special environments need special displays. Therefore, a forklift display suitable for the special environments is important. For a complex environment during a forklift usage process, a low-power-consumption and stable display is designed. When a display device is violently vibrated, and especially a correlation display data portion generates an abnormality, the normal transmission of the image data of the display is influenced and display is influenced too. In order to solve the above problems, a memory is arranged during a display data transmission process to store correlation data and the data is selectively displayed. A power circuit is arranged and is used for enhancing data signal power, and pixel charging time is reduced.