Local Dimming Display Technology: Empowering the Next Generation of Outdoor Digital Signage with High-Brightness, High-Contrast Solutions

In the high-end display field, contrast ratio has always been a decisive indicator. Deeper blacks, brighter whites, and clearly distinguishable gradations between light and dark areas not only directly affect visual impact but also determine the readability of information in complex environments.

To overcome the inherent limitations of traditional LCD displays in terms of black levels and contrast, local dimming backlight technology has gradually become a core technology in high-contrast display applications.

Local dimming is an advanced LCD backlight control technology. It divides the LED backlight into multiple independently controllable areas and dynamically adjusts the brightness of each area according to the content of the image, achieving a precise light control effect of “darkening dark areas and brightening bright areas.” Compared with traditional global backlighting solutions, local dimming significantly reduces light leakage, presents deeper blacks, higher peak brightness, and superior overall contrast, especially in HDR display scenarios.

Unlike self-emissive display technologies such as OLED (where each pixel can emit light independently), traditional LCD displays rely on uniform backlighting. When backlight continuously covers the entire screen, blacks in dark scenes often appear only as dark gray, significantly limiting image detail.

Local dimming technology solves this problem by using “zoned backlight control,” drastically reducing backlight in dark areas and precisely enhancing backlight in bright areas, thus significantly improving overall contrast.

Local dimming technology is divided into:

Full Array Local Dimming (FALD): This method uses a large number of LED backlight areas evenly distributed across the entire backlight of the screen, providing relatively precise local brightness control. It is typically used in high-end televisions.

Mini-LED Local Dimming: This method uses smaller LEDs, significantly increasing the number of backlight zones, thus achieving a more refined brightness adjustment effect. This technology is common in high-end display devices and can achieve contrast performance close to OLED.

From High-End Display Trends to Outdoor Applications

As digital signage gradually extends from indoor commercial spaces to outdoor advertising, public information dissemination, and traffic guidance, display technology faces new challenges: under strong sunlight, complex weather conditions, and long-term continuous operation, display devices must not only be “bright enough” but also maintain high contrast, stability, and reliability.

Based on a deep understanding and engineering practice of local dimming technology, we have successfully applied this high-end display technology to outdoor digital signage products, achieving precise light control and excellent image quality even under high-brightness output conditions.

TS-430THD: High-Brightness Local Dimming Outdoor Digital Signage Solution

The TS-430THD is a display product specifically designed for high-end outdoor digital signage scenarios, integrating high brightness, local dimming, and a high protection level, suitable for various critical application environments.

Typical Application Scenarios

Commercial Advertising
Public Information Display
Traffic Guidance

Key Performance Highlights

Ultra-high brightness of over 2500 nits

Even in strong sunlight, the image remains clear and legible, ensuring effective information delivery.

Local Dimming technology

Significantly improves contrast while maintaining high brightness output, preventing overall image washout and highlighting key information and visual focus.

IP66 waterproof and dustproof rating

Adapts to complex outdoor environments such as rain and dust, ensuring long-term stable operation.

IK10 shock resistance

Meets the high safety and durability requirements of public places and transportation applications.

Full Lamination display technology

Effectively reduces internal reflections and fogging, improving the transparency and consistency of outdoor displays.

Wide operating temperature range: -20℃ to 70℃

Adapts to various climatic conditions and supports global deployment.

Efficient Cooling System

Provides reliable protection for high brightness and long-term operation, extending product lifespan.

VESA Standard Installation Support

Compatible with multiple installation methods, facilitating project integration and rapid deployment.

High Contrast Ratio × High Reliability: Unlocking the Value of Outdoor Commercial Displays

In outdoor digital signage applications, display devices are not only information carriers but also crucial components of brand image and urban visual systems.

By integrating local dimming technology with high-brightness backlighting, protective structure, cooling system, and wide-temperature design at the system level, the TS-430THD demonstrates significant advantages in the following aspects:

Maintains clear, high-contrast display even in strong light environments
Stable and reliable image quality and brightness during long-term continuous operation
Adapts to complex outdoor environments, reducing maintenance and operation costs

From the evolution of high-end display technology to practical application, local dimming is redefining the image quality standards of LCD digital signage.

Previous Article Next Article