LED transparent screens are a hot spot for product development in the emerging LED display segment. my country's market demand for transparent screens is very huge, and market development efforts are far from enough. Taking the glass curtain wall market as an example, according to relevant information, the total area of modern glass curtain walls in our country has exceeded 70 million square meters, and its market potential is huge. The advertising value of this market has not yet been fully developed. In urban outdoor Against the background of increasingly depleted advertising resources and cumbersome installation approval procedures, glass curtain walls are a new blue ocean field. The scope of this field is very wide, such as urban landmark buildings, municipal buildings, airports, car 4S stores, hotels, banks, chain stores and other glass curtain wall buildings with advertising and commercial value. The American "Displaybank" research organization has made a very bold prediction for LED transparent displays: "By 2025, the market output value of transparent displays will be approximately US$87.2 billion." The market potential is huge. Some people in the industry predict that in the future, transparent screens may become the second most popular field in the LED display industry, comparable to "small spacing".

The transparent screens currently on the market can be divided into four categories: front-lit, side-lit, front-lit side-mounted, and glass screen. Here are a few corresponding articles to talk about one by one. This article will first talk about positive light-emitting transparent screens.

As you can see from the picture, the positive-emitting transparent screen is similar to the traditional outdoor grille screen. It just replaces the black bottom shell mask of the grille screen with a transparent PC material. Some manufacturers even directly abandon the bottom shell mask and use PCB streaking. form, and then by concentrating all components on one end and adopting a novel circuit routing method, a greater percentage of hollowing is achieved.

Of course, problems also arise. All electronic components are concentrated in one place, so the temperature of this area during operation will definitely be much higher than that of areas without components, which will lead to the problem of color cast in the display of the product. There are solutions on the market that use special ICs for transparent screens to evenly distribute the ICs, but the placement of the ICs still cannot be as wide as the light strips, which will still affect the appearance. Furthermore, in order to improve the hollowing rate of the product, the width of the light bar is limited, and there are few single-layer circuit traces, so it is difficult to increase the brightness of the positive light, and more than half a layer is expensive.

The picture above is a 3.91X7.82 positive light-emitting transparent screen unit module with a transparent PC bottom cover. In order to improve the hollowing rate, unlike conventional displays, the dot spacing of transparent screens generally adopts the method that the Y spacing is greater than the X spacing. The PCB of the module in the picture above does not use an unconventional ultra-thin board. It can still be made thin and light enough while ensuring the strength of the product, and it can ensure that no light leaks from behind the screen during display. Many products on the market have a whole PC directly in front. When such products are displayed, the PC will reflect behind the screen, causing light pollution to the indoor environment.

With the large-scale rise of the transparent screen market. Lamp beads with integrated optical drive that were previously used for landscape lighting have also begun to be used on transparent screens on a large scale. The difference is that they are now co-produced by display chip manufacturers and lamp bead manufacturers and are used in brightening applications. The product has been greatly improved in terms of grayscale, speed, and stability. Because the integrated optical drive device greatly simplifies PCB circuit routing. Therefore, the positive luminous transparent screen has appeared as a branch of the film screen.