TFT LCD screen customization requirements for charging piles
With the rapid development of electric vehicles, the number of supporting charging piles is also increasing. We can see them everywhere in residential parking lots, public parking lots, and high-speed service areas, and TFT LCD screens have become an important carrier of human-computer interaction for charging piles. The LCD screen on the charging pile can display important data such as charging capacity, electricity cost, and required time. We can complete the corresponding charging operation by swiping the card on the human-computer interaction interface. So how to choose the type of LCD screen used on the charging pile, and what customization requirements are there?
Charging pile LCD display
Customization requirements for charging pile LCD screen
The TFT LCD screen on the charging pile can be customized according to the site conditions, generally considering factors such as size, brightness, waterproofing, climate conditions, and electromagnetic interference. Usually, there are some customization requirements as follows.
High brightness requirements: Most charging piles are installed outdoors, and the brightness requirements of display screens must be higher than those indoors. Generally, we need to choose bright outdoor screen products with screen brightness greater than 900 cd/m2 and LCD backlight service life greater than 50,000 hours. The core technology of high-brightness LCD screens lies in the packaging process of LED backlights and energy efficiency. If the packaging process and energy efficiency are not up to standard, the heat generated during the use of the high-brightness screen will be greater, which will affect the use effect and service life of the screen. The outdoors itself is a very hot environment, plus the heat generated by the screen itself, so the LCD screen of the charging pile needs heat dissipation technology to reduce the temperature of the backlight and ensure the normal operation of the backlight so that the screen can be used normally. Usually, we add graphene to the back cover of the outdoor screen, which can have a good heat absorption and heat dissipation effect. In addition, using high-quality LED backlights with high energy efficiency to save energy and reduce heat generation is also an important outdoor high-brightness screen solution.
Wide working temperature requirements: The outdoor ambient temperature varies greatly with the seasons, and the charging process will also generate heat. Therefore, the outdoor charging pile screen needs to be equipped with a TFT LCD display with a wide operating temperature. The working environment temperature of the charging pile is generally: -20°C ~ +50°C, and for the selection of the temperature range of the LCD screen, it needs to be wider than this ambient temperature, generally -20°C ~ +70°C, if the outdoor environment is relatively harsh In some places, you can choose a wide temperature LCD screen from -30°C to +85°C.
Other requirements: The working environment of outdoor charging piles is affected by the weather, such as bright sun and heavy rain, so the LCD screen has the requirements of waterproof, dustproof, UV-proof, and external impact resistance; in addition, the charging pile will be charged during charging. There is serious electromagnetic interference, and the display screen must have a certain degree of anti-electromagnetic interference in order to be used normally. Usually, we need to carry out standard electromagnetic compatibility tests on products.
https://www.hemlcd.com/products/tft/
The above is a brief introduction to the demand for customization of charging pile LCD screens. The charging piles in major cities across the country are expanding rapidly, and the demand for customization of display screens is increasing day by day, which will be a huge market space.
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