Customized Design of Backlight Source For Liquid Crystal Display Module

The backlight source is a very important core component of the TFT LCD liquid crystal module (LCD module). Unlike the OLED display, the TFT LCD panel is a passive device that does not have the ability to emit light itself. As a transmissive panel, the TFT LCD liquid crystal panel requires a separate backlight source to provide brightness. A good backlight source can provide uniform light, which makes the display effect of the TFT LCD liquid crystal display module more uniform and delicate. Shenzhen Chenghao Display can customize backlight modules of various specifications. In addition to the mechanical structure such as size and shape, we also provide comprehensive solutions in terms of brightness level, NTSC color gamut, color, drive circuit, heat dissipation, lifespan, power consumption control, and cables. Have this very rich experience.

Brightness: 200~2000 cd/m2. Due to factors such as size, lcm structure, lcm type, and working environment, the brightness of lcds will have different upper limits. We have accumulated very rich experience in related fields, and can provide you with valuable suggestions and reliable customized solutions.

Brightness: 100~2000 nits, of course, subject to different sizes and different structures, different LCD screen products will have different # spi lcd display module # upper limit of brightness. For most screens, we can achieve 1000nits to meet the requirements for readability in sunlight.

NTSC: For the traditional backlight industry, it is difficult to greatly increase the value of NTSC. We are already trying quantum dot technology, which can easily break through 100% NTSC. The vividness of the picture is better improved, and the color transition in the picture is more natural.

Color temperature: The most widely used backlight for TFT LCD screens is white. Based on white, there are about 5500K positive white, 3500K warm white (yellowish), and 6500K cool white (cooler). We can comprehensively select the LED backlight of the appropriate color according to your preference or the situation of UI settings.

Drive circuit: The voltage and current required by the small-sized backlight are relatively low, and most motherboards can provide him with sufficient voltage and current values. However, some products with high brightness # small lcd module # requirements, or large screens, may have dozens of LEDs, so they may require high voltage or high current, so they need to use a backlight drive circuit. This part of the product provides drive circuits to adapt to the output requirements of customers, reducing the cycle of secondary development.

Cable: The backlight also needs a cable, which can be connected to the FPC of the LCD through the FPC and controlled through a port; it can also be controlled through a connector through a separate cable. It depends on your product structure. Of course, if the current is relatively large, we still tend to use cables to control it, which will be more secure.

Heat dissipation: For high-brightness LCD screen products, its power consumption is often too large, and the calorific value also increases accordingly, so a better heat dissipation structure is required. This needs to be considered at the beginning of the backlight design, such as designing a reasonable heat dissipation structure in advance, adding a heat dissipation film, and using an aluminum substrate.

Power consumption: Compared with the TFT LCD liquid crystal module, the power consumption of the backlight is much larger. It can be said that the largest power consumption of LCM lies in the backlight source. Between brightness and power consumption, some customers choose power consumption, because it may be a # shenzhen tft lcd display # handheld product that requires battery power, and cannot have too much power consumption, which will affect the battery life of the product. In many cases, we will also increase the brightness without increasing power consumption by adding film materials, such as DBEF, brightness enhancement film and other means.

The above introduces several important parameters of tft lcd backlight components when customizing. If you need more information, welcome to visit other content on our website.