Company patents

SEOUL SEMICONDUCTOR CO., LTD.

SEOUL SEMICONDUCTOR CO., LTD. shows a surprising shift in its patent strategy, with a significant decline in its long-standing focus on LED & Optoelectronics (Legacy CPC), which saw a -100.0% YoY drop in 2026 (so far) and a -56.4% decline in 2025. Concurrently, the company has rapidly emerged in Light-Emitting Devices (LEDs), with 46 patents in 2025, indicating a strategic pivot within the display sector, while maintaining a strong, albeit fluctuating, emphasis on Multi-Chip & 3D Assemblies, representing 51.1% of its portfolio.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

276 US filings (since 2023) · 12 categories · 16 themes

Advanced LED Device Structures

Innovations in the internal design of individual light-emitting diode chips or packages, focusing on semiconductor layer arrangements, electrode configurations, reflective elements, and light extraction features.

Light-Emitting Devices (LEDs)
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179since 2023
+13.7%YoY
Micro-LED Array Fabricationfiltered

Methods and structures for mass-producing and assembling arrays of micro-LEDs onto a substrate, including transfer processes, bonding techniques, and defect management.

LED & Optoelectronics (Legacy CPC)Light-Emitting Devices (LEDs)
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81since 2023
+3.8%YoY
LED Optical Extraction & Light Management

Optical structures and lens designs that improve light extraction efficiency from LED dies and modules, including diffractive films, micro-lens arrays, reflectors, and color-conversion layers.

Light-Emitting Devices (LEDs)Lighting Devices (Functional Features)
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53since 2023
+766.7%YoY
Multi-Spectral LED Illumination

LED devices and display systems designed to emit or utilize light across different spectral ranges, including visible and invisible light, or to create specific illumination patterns and immersive lighting experiences.

Light-Emitting Devices (LEDs)
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50since 2023
+88.9%YoY
Advanced Display Backlight & Optics

Innovations in backlight units, optical films, and light management structures to enhance display performance, uniformity, viewing experience, or specific functionalities like touch.

Liquid Crystal & Optical Modulators
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43since 2023
-33.3%YoY
Integrated Display & Illumination

Systems that combine light sources, waveguides, and display elements into unified products for backlighting, automotive applications, general lighting, or color-corrected displays.

Optical Elements & Systems
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39since 2023
-35.7%YoY
Adaptive Lighting Control Systems

Systems and methods for dynamically adjusting light output, distribution, color, or intensity based on environmental conditions, user presence, content, or specific application needs.

Electric Heating & Lighting ControlNon-portable Lighting DevicesLighting Devices (Functional Features)
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38since 2023
-33.3%YoY
LED Epitaxial Layer Engineering

Development and optimization of the semiconductor material layers and their interfaces within an LED to control light emission properties, manage internal stress, and improve device efficiency.

LED & Optoelectronics (Legacy CPC)
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36since 2023
0.0%YoY
Vehicle Lighting Optics

Optical systems and components specifically designed for automotive lighting applications, focusing on beam pattern generation, light distribution, and compact integration within vehicle structures.

Non-portable Lighting Devices
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24since 2023
-25.0%YoY
Deep Ultraviolet LED Technology

Specialized design and fabrication of light-emitting diodes specifically engineered to produce light in the deep ultraviolet (DUV) spectrum, often for applications like sterilization or curing.

LED & Optoelectronics (Legacy CPC)
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20since 2023
+66.7%YoY
Seamless Display Tiling

Techniques and structural designs for assembling multiple display modules or panels to create a larger, continuous display with minimized visible seams, uniform light emission, and robust mechanical integrity.

Light-Emitting Devices (LEDs)
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14since 2023
+50.0%YoY
Display Pixel Array Structures

Physical layout and material composition of individual pixels within a display panel, including active layers, electrodes, light-emitting elements (LEDs, OLEDs), and associated thin-film transistors (TFTs).

Integrated Circuit Layout & Arrangement
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12since 2023
+33.3%YoY
LED Module Thermal Packaging

Mechanical and thermal package design for LED modules, including heat sinks, thermal pads, flexible PCBs, and component housings for heat dissipation.

Lighting Devices (Functional Features)
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11since 2023
new
Optical Light Distribution & Shaping

Methods and components used to control the direction, spread, and intensity of light emitted from a source, including waveguides, lenses, diffusers, and louvers.

Lighting Devices (Functional Features)
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5since 2023
+300.0%YoY
OLED Emitter Materials

Development and optimization of organic chemical compounds and their structures, including guest-host systems and metal complexes, used within the emission layer to achieve specific light emission characteristics such as color, efficiency, and operational lifetime.

Functional Materials (LCD, Lubricants)
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4since 2023
n/a
Wearable & Portable Lighting

Compact and lightweight lighting devices designed to be worn on the body or easily carried, often featuring ergonomic designs, integrated power sources, and adjustable illumination.

Lighting Devices (Functional Features)
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3since 2023
new

Patents

Showing 11-20 of 137

Micro-LED Array Fabrication
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