Frameless Light Source Module with Grooved Light Guide
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LED planar light source modules with outer frames suffer from lines of darkness at seams and cannot achieve a frameless appearance, limiting their aesthetic and design potential.
Innovation Solution
A frameless light source module design featuring a plate-like light guide with uniformly spaced grooves for edge-type LED units and a reflecting film without an outer frame, utilizing a microstructure layer for improved light scattering and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If an outer frame is used to support the light guide plate, then the structural stability is improved, but lines of darkness appear at seams and frameless appearance is lost
Solution Approach 1:
The patent removes the outer frame from the light source module structure, extracting the problematic element that caused lines of darkness at seams. The light guide plate is directly attached to the back surface of the housing without any outer frame, achieving a frameless appearance while maintaining structural integrity through alternative support arrangements.
2Strength
If the light guide plate is attached to the outer frame, then the structural support is improved, but lines of darkness appear at seams
Solution Approach 1:
The outer frame is completely removed from the structure, eliminating the source of seam lines and darkness. The light guide plate is directly mounted to the housing back surface, removing the interface where seam defects occurred.
Solution Approach 2:
The housing back surface directly supports the light guide plate, merging the support function into the existing housing structure rather than requiring a separate outer frame. This integration eliminates the seam interface between frame and light guide plate.
3Stability of the object's composition
If an outer frame is used, then the structural integrity is improved, but the device cannot achieve frameless appearance
Solution Approach 1:
The outer frame is extracted from the design, allowing the light source module to achieve frameless appearance. The structural integrity is maintained through direct attachment of the light guide plate to the housing and proper arrangement of internal components.
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 eliminates lines of darkness and achieves an ultra-slim, frameless planar light source module with enhanced light uniformity and aesthetic appeal.
Implementation Method 1
a plate-like light guide (10)
Implementation Method 2
a reflecting film (30)
Implementation Method 3
A plurality of grooves (121) is defined in the lower surface (12)
Data Source
AI summary
A light source module includes a light guide plate, a reflecting film, and a plurality of edge-type light emitting diode (LED) units. Grooves are defined in a lower surface of the light guide plate. The reflecting film is below the lower surface and covers the entire lower surface and the grooves. An air gap is defined between the reflecting film and the lower surface. The edge-type LED units are located in the grooves. Each edge-type LED unit includes an LED chip, a wavelength converting layer, and a light reflecting layer. Light emitted is converted by the wavelength converting layer, reflected towards sidewalls of the wavelength converting layer, and transmitted to the lower surface. The reflecting film reflects light that enters the air gap towards an upper surface of the light guide plate, enabling uniform emission of light from the upper surface.