Integrated Illumination Display Panel for Thin Light Guiding
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Solution Overview
Problem
Existing illumination display panels with light sources on the back surface suffer from inefficient light guiding due to air layer reflections, increased thickness, and complex assembly processes.
Innovation Solution
The design integrates a light source mounting substrate with a resin panel featuring a light-transmitting second molded portion as a light guide, eliminating air layer reflections and reducing thickness, while simplifying assembly by integrating components and allowing for decorative freedom without a front surface layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the light source is disposed on the back surface side of the resin panel with an air layer, then the light source can be mounted separately, but light guiding efficiency deteriorates due to reflection at the air layer interface
Solution Approach 1:
The patent merges the light source mounting substrate with the resin panel into a single integrated structure. The light source is mounted on a mounting substrate that is directly integrated with the resin panel, eliminating the air layer between them. This integration maintains ease of manufacture through standardized mounting while eliminating light loss at air interface boundaries.
Solution Approach 2:
The patent introduces a mounting substrate as an intermediary component between the light source and the resin panel. This substrate serves as a mechanical support structure that integrates with the resin panel, providing a stable mounting surface for the light source while eliminating the need for separate air-gap assembly and preventing light reflection losses.
2Reliability
If the light source is disposed in the space on the back surface side of the resin panel, then light guiding can be achieved, but the panel thickness increases
Solution Approach 1:
The patent redistributes the light source mounting in the lateral plane rather than utilizing the thickness dimension. The mounting substrate is integrated into the back surface plane of the resin panel, allowing the light source to be positioned laterally without increasing the overall panel thickness. This dimensional repositioning maintains light guiding functionality while preserving a sleek, thin profile.
3Reliability
If the light source is disposed on the back surface side, then light can be guided to transmissive portions, but the empty space on the back surface cannot be widely used
Solution Approach 1:
The mounting substrate serves multiple functions: it provides mechanical support for the light source, integrates with the resin panel structure, and utilizes the back surface space efficiently. By making the mounting substrate an integral part of the resin panel, the design achieves multi-functionality that maximizes space utilization while maintaining light guiding efficiency.
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 enhances light guiding efficiency, reduces panel thickness, and simplifies assembly, while providing decorative flexibility and preventing light leakage issues.
Implementation Method 1
the light from the light source is totally reflected up to the transmissive portions and guided
Data Source
AI summary
An illumination display panel that forms part of a housing and has a display portion for illuminated display comprises a resin panel having a first molded portion made of an opaque resin at a portion excluding the display portion, and a second molded portion disposed on the back surface side of the first molded portion and made of a light-transmitting resin having a protrusion where the first molded portion is not present. The protrusion is fitted to the first molded portion. A light source mounting substrate is disposed on the back surface side of the resin panel. At least a light source of the light source mounting substrate is sealed by the second molded portion. An integrally molded product of the light source mounting substrate and the second molded portion is filled and solidified at a low pressure while compressing a cavity of a molding mold.