Technical Self-Reliance | The "New NATIONSTAR" in Micro LED

A light-emitting module the size of a fingernail can project clear patterns with ten-thousand-level pixels onto the ground. A 1.84-inch display integrates over 500,000 LED chips behind it, delivering extremely delicate full-color visual effects.

▲NATIONSTAR Develops Micro LED Light Sources for Intelligent Automotive Lamps

From launching the first-generation Micro LED display modules in 2020 to developing a variety of display products equipped with Micro LED technology today, NATIONSTAR has been deeply engaged in the ultra-high-definition display sector. By overcoming core technical challenges one by one and achieving scientific and technological innovation fruits, the company has brought the FAITH business philosophy of Guangdong Guangsheng Holding Group Co., Ltd. into the laboratory and led the pursuit of the light dream. With down-to-earth efforts and the drive to scale new heights, it is building a "new NATIONSTAR" that wins through innovation and achieves technological self-reliance.

Building High-Rises on Fine Sand

Breaking Through Technical Barriers One by One

In the Micro LED ultra-clean laboratory of NATIONSTAR Research Institute, several precision instruments are operating efficiently. R&D personnel in anti-static clothing monitor real-time parameters on the display and carefully analyze data changes.

▲R&D Personnel Conduct Microscopic Testing on Bonded and Packaged Micro LED White Light Modules

Micro LED, or micro light-emitting diode, is a new display technology that thins, miniaturizes and arrays the LED structure, with a size ranging from 1 to 100 microns. Micro LED chips can be directly integrated onto screen panels to achieve high-precision, high-brightness image display.

It is well known that the smaller the LED chip, the greater the packaging difficulty. Not to mention precisely transferring millions of micron-level Micro LED chips onto a target substrate for bonding — a challenge comparable to "building high-rises on fine sand".

Mass bonding has therefore become one of the insurmountable bottlenecks for the large-scale application of Micro LED technology.

So how has NATIONSTAR, an innovator in LED packaging technology, broken through this dilemma?

Breaking the Old and Establishing the New — Faced with the problem that the traditional single-chip die bonding and reflow method for flip chips cannot meet the mass bonding requirements of Micro LED chips (smaller than 100 microns), NATIONSTAR turned words into action. The company independently built a Micro LED technology platform and verified the planar hot-press mass bonding process to overcome the technical barrier.

This new process first attaches the Micro LED chip array to the target substrate, then performs eutectic bonding through heating and pressing. To achieve precise results, NATIONSTAR also adopted a high-precision alignment system and a constant-temperature heating system to accurately control temperature and time, realizing high-precision, high-density and high-efficiency electrical interconnection between Micro LED chips and the target substrate.

▲Principle of Process Verification for Micro LED Planar Hot-Press Mass Bonding

Achievements — Through repeated optimization and verification, NATIONSTAR has achieved remarkable results based on its self-developed planar hot-press mass bonding process:

· High-density bonding: Thousands of chips can be bonded in a single pass, greatly increasing bonding quantity and efficiency, with a one-time bonding yield of over 99.99%.

· High-precision bonding: Bonding accuracy reaches ±2 μm, far exceeding the traditional ±20 μm.

· High-uniformity bonding: Uniform temperature distribution with a planar temperature difference of less than 5℃, ensuring stable bonding quality.

During R&D, NATIONSTAR conducted thousands of experiments and continuously optimized materials and process parameters. It finally broke the constraints of traditional packaging processes, conquered the key technical difficulty of mass bonding for Micro LED packaging, and provided the industry with a high-yield, high-precision and high-efficiency technical solution.

Igniting Sparks in the Pursuit of Light

Steady Progress in Scientific and Technological Innovation

In recent years, Micro LED has gradually shown unique advantages in smart wearables, large-screen TVs, augmented reality (AR) and other fields. In the future, it will also enjoy broad application prospects in transparent displays, intelligent automotive lamps and more emerging scenarios, with huge market potential.

▲Micro LED has been gradually applied in scenarios such as Augmented Reality

To seize market opportunities, NATIONSTAR focuses on the strategic development needs of the new display industry.

Relying on key innovation platforms including the Mini & Micro LED Research Center and the Guangdong Provincial Key Laboratory of Semiconductor Microdisplay, the company fully builds an innovation chain covering material epitaxy, chip manufacturing, transfer integration, full-color packaging and other fields, centered on national key R&D programs and Guangdong provincial key field R&D projects.

By pooling industry-university-research strengths, targeting core key technologies, removing blockages, eliminating pain points and solving difficulties, NATIONSTAR promotes the R&D innovation and industrial application of Micro LED technology in an all-round and in-depth way.

▲Guangdong Provincial Key Laboratory of Semiconductor Microdisplay

Driven by innovation, NATIONSTAR has achieved a number of key technological breakthroughs in the Micro LED field. The company has filed more than 250 patents for Mini/Micro LED in total, and won the China Patent Gold Award for its patent "Full-Color Light-Emitting Devices and Display Modules".

Through high-value patent layout, NATIONSTAR has achieved independent and controllable technologies in core links such as chip packaging and mass transfer, and established a relatively complete technical system for ultra-high-definition display packaging.

Despite these achievements, NATIONSTAR has not stopped moving forward.

"Next, we will continue to explore the application potential of Micro LED in emerging fields such as indoor large-screen displays and intelligent automotive lamps, accelerate research on key core technologies in this field, and contribute greater efforts to promoting the industrial application of Micro LED technology!"A researcher from NATIONSTAR’s Micro LED project team said with firm determination.

Striving for New Heights & Scaling Greater Ambitions

In 2025, focusing on value creation, NATIONSTAR has launched a new round of high-reaching actions. Guided by the Group’s FAITH business philosophy, more innovative achievements will emerge, development will accelerate, the vision of a modern industrial landscape will become clearer, and the goal of "building a new NATIONSTAR" will be fully realized.