Light Emission Device Segmented Bulkhead Crosstalk Reduction
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Solution Overview
Problem
Existing image display devices face challenges in improving wavelength conversion characteristics while effectively suppressing crosstalk between pixels.
Innovation Solution
A light emission device comprising a light emitting element with a light emission surface, a first light controller for controlling light wavelength, diffusion, or direction, a covering part for protection, and a first light shielding part for light shielding, arranged to enhance wavelength conversion and reduce crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a wavelength converter is disposed on a micro light emitting element to improve wavelength conversion characteristics, then the wavelength conversion efficiency is improved, but light crosstalk between adjacent pixels increases
Solution Approach 1:
The invention divides the bulkhead structure into multiple segments: a first bulkhead on the light emitting element, a second bulkhead on the wavelength converter, and a third bulkhead connecting them. This segmented approach allows each bulkhead to independently address crosstalk at different locations, effectively suppressing light leakage while maintaining wavelength conversion performance.
Solution Approach 2:
The invention extends the crosstalk suppression structure from a single-plane bulkhead to a three-dimensional configuration by adding bulkheads at different vertical levels (first bulkhead at the light emitting element level, second bulkhead at the wavelength converter level) and connecting them with a third bulkhead, creating a multi-level barrier against light crosstalk.
2Object-generated harmful factors
If a bulkhead is formed on side surfaces to suppress crosstalk, then light crosstalk between pixels is suppressed, but the device structure becomes more complex
Solution Approach 1:
The invention merges the crosstalk suppression function with the protective packaging structure. The bulkheads are integrated into the packaging material that also provides mechanical protection and environmental sealing, combining multiple functions into a single structural element rather than adding separate components.
Solution Approach 2:
The bulkhead structure serves multiple purposes: it suppresses light crosstalk between pixels, provides mechanical support, and offers environmental protection. The packaging material forming the bulkheads performs both optical isolation and structural protection functions simultaneously.
3Manufacturing precision
If the wavelength converter is exposed to improve wavelength conversion, then the conversion efficiency increases, but the wavelength converter becomes vulnerable to damage
Solution Approach 1:
The wavelength converter is nested within a protective packaging structure. The packaging material surrounds and protects the wavelength converter while allowing light to pass through for wavelength conversion. This nested configuration shields the wavelength converter from environmental damage while maintaining its optical functionality.
Solution Approach 2:
The packaging structure provides preemptive protection to the wavelength converter before it is exposed to potentially damaging environmental factors. The protective material is in place during manufacturing and operation, preventing moisture, oxygen, and mechanical stress from reaching the wavelength converter.
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 improves wavelength conversion characteristics and suppresses crosstalk between pixels, enabling high-luminance and compact display applications such as augmented and virtual reality devices.
Implementation Method 1
a first light controller that is formed on the light emission surface and controls at least one of a wavelength of light
Implementation Method 2
a first light shielding part that is formed on a side surface of the covering part and shields light
Data Source
AI summary
A light emission device (1) includes a light emitting element (3) having a light emission surface (3A), a first light controller (41) that is formed on the light emission surface (3A) and controls at least one of a wavelength of light, a diffusion of light, or a direction of light, a covering part (5) that is formed on an opposite side to the light emission surface (3A) of the first light controller (41) and covers and protects the first light controller (41), and a first light shielding part (6) that is formed on a side surface of the covering part (5) and shields light.