Analysis of the Supporting Hierarchy of Debang Lighting's Headlight Controller in ADAS Systems

Based on the collected information, I will provide a detailed analysis of the supporting hierarchy of Debang Lighting’s headlight controller in the ADAS system.

Debang Lighting (Stock Code: 603303) is a leading export enterprise in China’s lighting industry. It officially entered the automotive business sector in 2018, mainly carrying out automotive electronic product business through its subsidiary Debang Intelligent Control [1]. The company’s automotive business mainly includes:

• Headlight Controller (LDM)
  : Automotive headlight controller
• BMS Controller
  : Battery Management System Controller
• Headlight Structural Components

In 2021, the company’s automotive business revenue was approximately RMB 280 million, accounting for about 5% of total revenue [1].

In the automotive electronics supply chain, suppliers are usually divided into the following tiers:

Tier	Definition	Representative Enterprises
Tier 0.5	Deeply integrated with OEMs, fully involved in R&D, production, and manufacturing	Huawei, joint ventures between Desay SV and OEMs
Tier 1	System integration suppliers, directly supply to OEMs	Bosch, Continental, ZF
Tier 1.5	Focus on domain controller basic software, connect upstream and downstream of the industrial chain	Chuangshi Zhijia, a joint venture between TTTech and Lianchuang
Tier 2	Component suppliers, supply to Tier 1 or OEMs	Keboda, Debang Lighting, etc.

According to industry research reports, there are generally two modes in the headlight controller supply system [2]:

• Headlight controllers are independently developed (both hardware and software) by headlight assembly manufacturers (Tier 1) such as Hella, Valeo, Koito, Xingyu, and SAIC Motor Visual Technology
• OEMs basically do not have direct contact with headlight controller suppliers (Tier 2)

• While designating headlight assembly suppliers, OEMs separately designate headlight controller suppliers and participate in joint design and development
• Debang Lighting is an independent third-party headlight controller supplier
  , which supplies headlight controllers directly to vehicle OEMs or headlight assembly manufacturers for integration through separate bidding by OEMs

: Panasonic, Daihatsu, Nissan, Audi, Porsche, etc. [1][3].

The headlight controller is the “brain” of the headlight system, mainly realizing the following functions:

• Light source start/stop control
• Light intensity adjustment
• Turn signal control
• Intelligent high-low beam switching

In the ADAS system, the headlight controller is in the

position:

ADAS Domain Controller (Decision-Making Layer)
    ↓ CAN/LIN Bus Communication
Headlight Controller (Execution Layer)
    ↓
Headlight Actuator (Physical Layer)

• Information Input
  : Receives driving status information (vehicle speed, steering signal, road conditions, etc.) from the intelligent driving domain controller
• Function Execution
  : Implements intelligent lighting control according to instructions from the ADAS system, such as:
  • Intelligent high beam switching (based on camera detection of oncoming vehicles)
  • Curve lighting assistance (adjusts light irradiation direction based on steering angle)
  • Traffic sign recognition linkage (automatically switches to low beam)

According to industry data, the main components of the headlight controller include [3]:

• Software Part
  : Requires complete automotive electronic software development capabilities, adopting the AutoSar standard software architecture
• Hardware Part
  : Requires support from engineering process design, a complete supply chain, automated production lines, and testing systems

Debang Lighting has established an automotive R&D center that meets the ASPICE Level 2 standard, with software development capabilities [1].

According to 2021 industry data, major suppliers in the headlight controller field include:

Enterprise	Business Revenue	Customer Base	Supporting Tier
Keboda	RMB 1.38 billion	Volkswagen, Audi, Porsche, Toyota, Honda, etc.	Tier 1/Tier 2
Debang Lighting	RMB 280 million	Panasonic, Daihatsu, Nissan, Audi, Porsche, etc.	Tier 2
Jingxin Technology	-	Mainly independent automakers	Tier 2

The supporting tier of Debang Lighting’s headlight controller in the ADAS system is as follows:

• Upstream Connection
  : Establishes direct technical cooperation with vehicle OEMs through the OEM designated model
• Downstream Supply
  : Supplies products to headlight assembly manufacturers (such as Xingyu Auto Lamp, Hella, etc.) for integration
• System Integration
  : Serves as an execution layer component in the ADAS architecture, linking with the intelligent driving domain controller through bus communication

With the increasing penetration rate of intelligent driving functions, as a core component for realizing intelligent lighting functions, the per-vehicle value and supporting demand for headlight controllers are expected to continue to grow. Debang Lighting is expected to further expand its supporting share in the ADAS system by virtue of its advantageous position in the supply chain of Japanese customers.

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[1] Guosen Securities Research Report - Debang Lighting (603303): “Leading Lighting Enterprise Enters Automotive Sector, Controllers Drive Second Growth” (April 2023)
[2] Zuo Si Automotive Research: “2025 Automotive Electronics OEM and Automotive Electronic ECU Industry Panorama Research Report”
[3] Zheshang Securities Research Report - Keboda: “Leader in Headlight Controllers, Unleashing the Second Growth Curve with Domain Controllers” (March 2023)