Light Emitting Apparatus Recessed Substrate Design
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Solution Overview
Problem
Existing light emitting apparatuses face issues with mounting errors leading to uneven light distribution, dark regions between LEDs, and reduced manufacturing yield due to defects in individual LEDs mounted on a single substrate.
Innovation Solution
A light emitting apparatus is designed with multiple light emitting units on separate supporting bodies, allowing for closer placement of LEDs and the use of a phosphor layer to reduce light leakage, with each unit independently driven to minimize dark regions and enhance yield by allowing defective units to be replaced without affecting the entire apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a plurality of light emitting devices is mounted on one mounting substrate, then the light emitting apparatus can be compact, but mounting errors cause uneven light distribution and dark regions between LEDs
Solution Approach 1:
The patent divides the mounting substrate into multiple isolated recesses, each containing a single light emitting device. This segmentation isolates each LED's optical output, preventing light from adjacent devices from causing uneven distribution or dark regions, while still allowing compact arrangement of multiple devices on one substrate.
2Ease of manufacture
If wiring is formed between light emitting devices, then electrical connection is achieved, but wiring shields irradiation light and creates dark regions
Solution Approach 1:
The patent extracts the wiring from the light-emitting region by forming wirings on the sidewalls of the recesses rather than in the spaces between light emitting devices. This positioning removes the wiring from the optical path, eliminating the shielding effect that creates dark regions while maintaining electrical connectivity.
3Volume of moving object
If light emitting devices are placed close together, then the apparatus is more compact, but light leakage between devices occurs
Solution Approach 1:
The patent converts the potential harm of light leakage into a benefit by using the recess structure to guide and concentrate light. The recesses with reflective sidewalls redirect light that would otherwise leak between devices back toward the intended emission direction, transforming stray light into useful illumination while allowing closer device placement.
4Ease of repair
If individual light emitting devices are mounted separately, then defective units can be replaced, but the apparatus structure becomes more complex
Solution Approach 1:
The patent creates universal, identical recess structures that can accommodate any light emitting device type. Each recess is designed with standardized dimensions and features (such as reflective sidewalls and wiring configurations) that work with multiple device variants, simplifying the overall structure while enabling easy replacement of defective units with compatible alternatives.
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
This configuration reduces light leakage and dark regions, improves manufacturing yield by enabling individual unit replacement, and simplifies the optical system by minimizing uneven luminance issues.
Implementation Method 1
the use of a phosphor layer to reduce light leakage
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
A light emitting apparatus (10) according to the present invention includes: a mounting substrate (11); a plurality of supporting bodies disposed on the mounting substrate (11); and a plurality of light emitting devices (19) disposed on upper surfaces of the plurality of supporting bodies. The plurality of light emitting devices (19) are arranged on each of plurality of supporting bodies in a plurality of rows in a direction perpendicular to an alignment direction (along AX) of the plurality of supporting bodies. In a preferred embodiment the light emitting devices have different lengths in the direction perpendicular to the alignment direction.