When purchasing transparent LED displays, many customers encounter a common issue: although the displays appear similar in appearance and have the same pixel pitch, there are significant differences in the quotes provided by different suppliers. A professional supplier might explain that the structural design of the LED chips and driver ICs also influences the price of transparent LED screens.
Currently, common design approaches for transparent LED displays include lamp-driver integration and lamp-driver separation. These two structures differ in terms of internal design, manufacturing processes and cost composition, which is one of the reasons why some transparent LED screens are priced higher.
Lamp-Driver Integration vs. Lamp-Driver Separation in Transparent LED Displays
In transparent LED displays, the LED lamp and driver IC can generally be designed in two different ways: lamp-driver integration or lamp-driver separation.
1. What is a lamp-driver integrated transparent LED display?
Lamp-driver integration refers to the direct integration of the driver IC into the LED lamp, enabling each lamp to perform both light-emitting and driving functions simultaneously. This structure can also be understood as an integrated LED driver design, whereby the driving function is directly integrated into the LED lamp.
Compared to the lamp-driver separation approach, integrated transparent LED displays place higher demands on the manufacturing and packaging of the LED chips themselves; consequently, the cost per device may be higher.
However, as the driver IC is already integrated within the LED chip, this reduces the need for some peripheral driver components and wiring, resulting in a more compact structure for the transparent LED display module.
2. What is a transparent LED display with a separated driver?
A separated driver refers to a configuration where the LED lamp and the driver IC are set up independently. The LED lamp is responsible for light emission, whilst the driver IC is mounted on a separate circuit. This approach can also be understood as a ‘separated LED driver design’, meaning that the LED lamp and driver IC adopt relatively independent structures.
A single driver IC can typically control multiple LED lamps simultaneously, with the circuitry uniformly driving and controlling them all.
Consequently, compared to the approach where each lamp integrates its own IC, the “separated LED driver” structure employs a different driving method and a different configuration of components. For transparent LED display modules, the two structures also differ in terms of internal circuitry and component layout.
Why Can Lamp-Driver Integration Cost More?
The core feature of lamp-driver integration is the integration of the driver IC into the LED chip itself. In other words, each LED chip requires its own integrated driver IC, rather than a single, independent driver IC controlling multiple chips simultaneously.
This implies that the LED chips used in integrated transparent LED displays have a more complex internal structure and packaging process, placing higher demands on production processes and manufacturing standards. Furthermore, as each LED chip requires a driver IC, the number of integrated components used also increases.
Consequently, all other things being equal, the lamp-driver integration solution may result in higher component and manufacturing costs, which is one of the reasons why some transparent LED displays are more expensive.
Note: Although the integrated lamp-driver solution incurs a higher cost per device, it offers simpler wiring, a lower failure rate and easier maintenance; the separate lamp-driver solution uses fewer ICs and has lower material costs, but the PCB layout is more complex. When selecting a transparent LED screen, customers should not focus solely on price, but must also consider future maintenance, on-site installation conditions and actual application requirements.
