Light Emitting Substrate Layout for Lens Pressure Protection
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Solution Overview
Problem
In light emitting devices using surface emitting lasers, the integration of lenses and light emitting elements on a substrate can lead to damage due to pressure application and adsorption difficulties during mounting, as the lenses or elements may interfere with the substrate's absorption process.
Innovation Solution
A light emitting device design featuring a substrate with light emitting elements on one surface and lenses on the other, incorporating protrusions and films that match the height of the lenses to prevent damage and facilitate smooth adsorption, using antireflection, light absorbing, or organic films to disperse pressure and prevent reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lenses are provided on the substrate, then light emission control is improved, but damage to lenses occurs due to pressure application during mounting
Solution Approach 1:
The patent introduces a film as an intermediary layer between the lens and the substrate. This film has a refractive index different from both the lens and substrate, acting as a buffer that reduces pressure concentration on the lens during mounting while still allowing effective light emission control. The film mediates the interaction between mounting pressure and lens structure, preventing damage.
Solution Approach 2:
The patent applies a protective film to the lens surface before mounting operations. This preliminary protective layer is designed to withstand mounting pressures that would otherwise damage the lens. The film is applied in advance of the mounting process, allowing the lens to be protected during subsequent handling and assembly operations.
2Reliability
If lenses are provided on the substrate, then light emission control is improved, but adsorption of substrate becomes difficult
Solution Approach 1:
The film serves as a mediator between the substrate surface and the lens structure. By providing this intermediate layer, the substrate can be properly adsorbed to the mounting surface while the lens remains protected. The film allows the substrate to maintain its adsorption properties without the lens interfering with the adsorption process.
Solution Approach 2:
The patent applies different properties to different regions: the lens region has the protective film with specific optical properties for light emission control, while other regions of the substrate maintain their original adsorption properties. This local differentiation allows simultaneous optimization of both light emission control and substrate adsorption capability.
3Use of energy by moving object
If antireflection films are applied on lenses, then light transmission is improved, but pressure damage to lenses increases
Solution Approach 1:
The patent uses a composite structure consisting of the lens, antireflection film, and protective film. The antireflection film is applied to improve light transmission, while the additional protective film layer provides mechanical strength and pressure resistance. This composite material approach allows simultaneous achievement of optical performance and mechanical durability.
Solution Approach 2:
The patent introduces an additional protective film layer that acts as a cushion between mounting pressures and the lens-antireflection film structure. This beforehand cushioning layer is specifically designed to absorb and distribute mounting pressures, preventing damage to the more fragile antireflection film and lens while maintaining their optical functions.
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 effectively suppresses damage to lenses and light emitting elements during substrate mounting, ensuring proper adsorption and maintaining device functionality while allowing for various lens and element configurations.
Implementation Method 1
the first substrate is held by adsorption in the second portion, so that it is possible to suppress damage to the lens due to application of pressure to the lens
Implementation Method 2
when the first substrate is adsorbed and mounted on the second substrate, the first substrate is held by adsorption in the second portion
Implementation Method 3
a lens provided on an upper surface of the first substrate
Data Source
AI summary
Provided are a light emitting device capable of providing lenses or light emitting elements on a substrate in a suitable manner, and a method for manufacturing the light emitting device. A light emitting device of the present disclosure includes: a first substrate; a light emitting element provided on a lower surface of the first substrate; a lens provided on an upper surface of the first substrate; a first protrusion provided on the upper surface of the first substrate; and a first film provided on the upper surface of the first substrate, the first film including a first portion disposed on the lens or forming the lens, and a second portion disposed on the first protrusion or forming the first protrusion, in which a height of an uppermost portion of the first portion is equal to or less than a height of an uppermost portion of the second portion.