LED Lamp Coating Composition for Thin White Off-State Appearance
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Solution Overview
Problem
Existing LED incandescent lamps with silicone-based outer coatings have thick coatings that affect aesthetics and have low light transmittance, especially when not illuminated.
Innovation Solution
A LED light source with an outer coating comprising a specific coating composition that includes a solvent, a binder, and a pigment, which reduces the coating thickness to 0.1-0.4 mm, improving aesthetics and light transmittance by giving the LED chips a white appearance in a power-off state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicone-based outer coating is used, then the LED light source is protected and encapsulated, but the coating thickness increases and aesthetics deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters of the coating material from traditional silicone-based materials to a new coating composition with specific components (resin, pigment, solvent, and additive in specific ratios). This parameter change enables the coating to achieve both adequate protection and reduced thickness for improved aesthetics.
Solution Approach 2:
The patent uses a composite coating composition consisting of multiple components (resin, pigment, solvent, and additive) working together. This composite material approach allows the coating to provide protection while maintaining thin thickness and good aesthetics, resolving the contradiction between protection and appearance.
2Reliability
If silicone-based outer coating is used, then the LED light source is protected, but the coating thickness increases and light transmittance decreases
Solution Approach 1:
The patent modifies the coating composition parameters to create a thinner coating layer that maintains protection while improving light transmittance. The specific formulation (resin, pigment, solvent, additive in controlled ratios) enables reduced thickness without sacrificing protective function.
Solution Approach 2:
The patent applies different properties to different aspects of the coating: the resin provides protection, the pigment provides color and opacity control, the solvent enables proper application and drying, and the additive enhances specific properties. This local quality differentiation allows the coating to be thin yet protective with good light transmittance.
3Reliability
If coating thickness is increased, then protection is improved, but aesthetics and light transmittance deteriorate
Solution Approach 1:
The patent employs a composite coating material with specifically formulated components that work synergistically. This composite structure provides adequate protection at reduced thickness, simultaneously improving light transmittance and aesthetics compared to traditional single-material coatings.
Solution Approach 2:
The patent changes the material parameters by using a new coating composition formulation instead of traditional silicone-based materials. This parameter change enables the coating to achieve the required protective function at thinner thickness, thereby improving both light transmittance and aesthetics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves a thinner, more aesthetically pleasing outer coating with improved light transmittance and reduced luminous flux loss, enhancing the overall appearance and performance of the LED light source.
Implementation Method 1
one or more LED chips coated with a phosphor material underlying layer exhibiting a colored appearance
Implementation Method 2
the coating composition includes a solvent, a binder, and a pigment, and the outer coating gives the LED chips a color appearance different from the underlying material in a power-off state
Data Source
AI summary
Provided is a light emitting diode (LED) light source and an LED incandescent lamp with a coating cladding layer that includes a LED light source, which includes one or more LED chips coated with a phosphor material underlying layer exhibiting a colored appearance; and an outer coating having a coating composition, the coating composition includes a solvent, a binder, and a pigment. The LED light source having a small thickness, aesthetic appearance, and high light transmittance.