Wood-Grain Screens Reach Mass Production: Hidden-Screen Designs Set to Transform Cockpit Interaction

As multi-screen arrays and giant display panels become standard features in intelligent vehicles, a reverse design philosophy is gaining momentum: making technology invisible. In 2026, this concept reached its first large-scale commercial implementation through wood-grain hidden display screens (hereinafter referred to as “wood-grain screens”). In a report released in April 2026, industry consulting firm Sigmaintell officially designated 2026 as the “first year of mass production for wood-grain screens” and projected global shipments to reach approximately 150,000 units.

This milestone was marked by the mass-production rollout of the SAIC Volkswagen ID. ERA 9X in March 2026. The vehicle is equipped with three wood-grain screens known as “Smart Surface Magic Screens,” integrated into the instrument panel and both rear door panels, enabling a seamless experience where “the surface appears as wood when off and transforms into a display when on.” Its successful mass production is not only a technological breakthrough, but also signals a shift in smart cockpit competition—from “screen accumulation” toward experience integration.

1. Technical Core: How Does Imagery Pass Through Wood Grain?

Wood-grain screens are far more than simple “display overlays.” They are a vehicle-grade intelligent surface system integrating optics, materials science, electronics, and algorithms. The core challenge is how to preserve the natural texture of wood grain while allowing light to pass through efficiently to render high-definition images, as well as ensuring precise touch responsiveness.

1.1 Three-layer composite structure solving the optical paradox:

• The system is built on a highly engineered “sandwich” structure:Surface layer (decorative layer): A high-fidelity wood-grain decorative film is used, processed with nano-scale laser micro-perforation technology to create tens of thousands of microscopic holes per square centimeter. These pores are invisible to the naked eye but precisely control light transmission.

• Middle layer (optical compensation layer):This layer integrates complex color calibration and optical compensation algorithms to correct light scattering, color shifts, and brightness unevenness caused by wood textures and material properties, ensuring sharp images and accurate colors when the display is active.

• Bottom layer (display & light control layer):Typically built on a Mini LED backlight module, combined with micron-level local dimming technology. When activated, only display areas are illuminated precisely, while non-display regions remain in their natural wood appearance; when turned off, the surface becomes fully dark and visually “invisible.”

1.2 Deep Integration of Function and Safety

The value of wood-grain screens extends beyond aesthetics. In the SAIC Volkswagen ID. ERA 9X, the wood-grain screens integrated into the rear door panels are endowed with practical safety functions. When a passenger presses the door release button, the screen instantly displays a live blind-spot view of the rear-side exterior of the vehicle. This helps effectively prevent “dooring” accidents, achieving a unified balance of design elegance, user convenience, and safety performance.

2. Supply Chain Restructuring: Deep Cross-Domain Collaboration 

The mass production of wood-grain screens relies on a restructuring of the traditional automotive supply chain and a high level of cross-industry collaboration, forming a four-party structure consisting of OEMs, Tier 1 system integrators, panel manufacturers, and material/process suppliers.

• Upstream: Material giants securing key positions. This layer is critical in determining whether the technology can be industrialized and whether the final user experience can meet expectations, with a particular focus on micro-perforated decorative films and precision processing technologies. Global materials leader DNP announced in April 2026 the mass production of decorative films for in-vehicle displays, initially prioritizing the Chinese market and effectively setting a performance benchmark for high-end film materials in the industry. Within China’s supply chain, Zhenhai Technology supplied the core micro-perforated wood-grain film and display modules for the SAIC Volkswagen ID. ERA 9X project. The maturity of these upstream technologies has laid the essential foundation for large-scale commercialization across the industry.

• Midstream: Rising Value of Display Modules.  Leading panel manufacturers such as BOE Technology Group Co., Ltd., Tianma Microelectronics Co., Ltd., and TCL China Star Optoelectronics Technology Co., Ltd. are facing an upgraded competitive landscape. They are now required to deliver fully integrated modules combining display, texture, and optical functionality. For example, Tianma has introduced its InvisiVue™ hidden display technology, while BOE has launched a dual 12.3-inch wood-grain smart surface product based on Mini LED backlighting. These companies can function either as Tier 1 suppliers or directly provide standardized, fast mass-production solutions to OEMs.

• Downstream: Deepening Role of Tier 1. Suppliers Tier 1 suppliers, represented by Yanfeng and HUAYU Automotive Systems Co., Ltd., are undergoing a fundamental transformation. They are no longer limited to procurement and assembly of components. Instead, they now lead full-vehicle integration of wood-grain screens with interior design, ambient lighting, touch interaction, and sensor systems. Specifically in the SAIC Volkswagen ID. ERA 9X project, Yanfeng is responsible for instrument panel system integration and cockpit adaptation, while Huayu Automotive Systems supplies the two rear door panel displays. Their core capability has evolved into delivering complete “smart surface” solutions.

3. Challenges and Path Forward

From “First Year” to Mainstream Adoption Although 2026 marks the “first year” of wood-grain screen mass production, the technology still faces a demanding maturity phase before becoming a mainstream automotive feature. 

• Primary barrier: Cost. Industry data indicates that wood-grain screens of the same size are 30%–50% more expensive than conventional displays. This effectively confines them to premium vehicles priced above 300,000 RMB. The cost structure is complex, involving specialized decorative films, additional optical compensation layers, more advanced driving algorithms, and higher yield losses during manufacturing.

• Secondary challenge: Reliability and after-sales system.  The highly integrated design significantly increases maintenance costs. In many cases, partial screen damage may require replacing the entire high-value module assembly. This creates new challenges for automakers in after-sales cost control and spare parts management across the supply chain, requiring a fundamentally new service and maintenance framework.

Industry consensus suggests that as core film material capacity expands and manufacturing processes mature, the cost curve is expected to enter a rapid decline phase over the next 2–3 years. A foreseeable adoption path is as follows: 

• 2026–2027: Positioned as a “technology signature” in flagship premium models, primarily used to create differentiated in-cabin experiences.

• 2027–2028: With costs declining, the technology begins to penetrate high-trim variants in the mainstream 200,000–300,000 RMB vehicle segment.

• Longer term: The technology extends beyond wood grain to materials such as stone textures, metal finishes, and fabric-like surfaces, ultimately evolving toward the next-generation cockpit paradigm where “the surface is the interface, and material itself becomes interaction.”

The production breakthrough in 2026 signals a fundamental shift in smart cockpit competition—from a focus on screen quantity and size to a new direction centered on making technology more invisible, natural, and seamlessly integrated into space and user experience.