3.5-inch transflective TFT screen 480*640, the new favorite for outdoor equipment

    Shenzhen Hongjia Technology has developed a 3.5-inch transflective LCD screen compatible with Truly and Toppo, with a resolution of 640*480 and a touch screen. It has been mass-produced, and the FPC specifications and custom molds can be changed according to customer requirements, and long-term stable supply is guaranteed. In addition to normal display indoors, the 3.5-inch transflective LCD screen can also display information well in strong sunlight outdoors during the day without turning on the backlight. Since the backlight usage rate can be minimized, the power consumption of products embedded with this module can be greatly reduced and the service life of the backlight LED can be extended. At present, our company's production capacity can meet the needs of customers for 3.5-inch transflective LCD screens.

Basic principle of transflective screen:

   The secret of transflective is the semi-reflective film. Just like the glass of some buildings, some sunglasses and car films. The front is a mirror (which can reflect sunlight and provide a light source for reading in the sun). But the back of the mirror can see through the mirror (providing a channel for the screen backlight).

    Generally, screens are divided into fully transparent and semi-transparent and semi-reflective types according to the "lighting mode". Fully transparent screen - there is no reflector on the back of the screen, and the light source is provided by the backlight. Advantages: excellent reading ability in weak light and no light. Disadvantages: the backlight brightness is seriously insufficient in outdoor sunlight. Simply relying on increasing the backlight brightness will rapidly lose power, and the effect is also very unsatisfactory. Simply increasing the brightness of the LED lamp to achieve semi-transparency is not feasible, which will only shorten the life of the LED lamp, reduce the battery life and increase power consumption. Semi-reflective screen - that is, the reflector on the back of the reflective screen is replaced with a mirror reflective film. And add a fully transparent backlight; it can be said that the semi-reflective and semi-transparent screen is a hybrid of the reflective screen and the fully transparent screen. It concentrates the advantages of both, and has both the excellent reading ability of the reflective screen in outdoor sunlight and the excellent reading ability of the fully transparent screen in weak light and no light. The characteristics of the 3.5-inch semi-reflective and semi-transparent screen are: the backlight brightness automatically adapts to the outdoor environment. How strong the outdoor sunlight is, how strong the backlight (sunlight) reflected by the reflective film is. No matter how strong the outdoor sunlight is, you don't have to worry about it. The stronger the ambient light is, the stronger the reflected backlight is. Outdoors, you don't need to rely on additional backlighting equipment at all, so it saves a lot of power outdoors than a fully transparent screen, and the reading effect is also much better.

   The semi-reflective and semi-transparent screen has mature technology, but it is expensive. Few domestic manufacturers produce it. In addition to the price factor, another reason is that the process requirements are relatively complicated. First of all, the screen must be made of a reflective film on the basis of its own material. Secondly, it must also have a light-emitting board at the same time, which makes it a screen that combines the advantages of reflective screens and transmissive screens, but does not have the disadvantages of both. Outdoors in the sun during the day, the bigger the sun is, the clearer you can see. When there is no sunlight, of course you can see clearly. As for the night, it goes without saying that it is just as clear. In addition, because the semi-reflective and semi-transmissive screen not only emits light by itself, but also uses external light sources, another advantage of it is that the eyes will not hurt the eyes like the transmissive screen if you look at this screen for a long time. It is between the reflective screen and the transmissive screen.

    In short, the fully transparent type relies on direct backlight display, the reflective type relies on ambient light reflection display, and the semi-transparent type is the perfect combination of fully transparent and fully reflective! If you want the best display effect and the lowest power consumption, the "semi-transparent display + backlight automatic sensor switch" solution is the best choice!

    3.5-inch semi-transparent LCD screen application areas: A, aircraft display instruments: passenger aircraft, fighter jets, helicopter airborne display screens, B, car display: car computers, GPS, smart meters, TV screens, C, high-end mobile phones, D, outdoor instruments: handheld GPS, three-proof mobile phones, E, portable computers: three-proof computers, UMPC, high-end MID, high-end tablet computers, PDAs.