Backlight Module Fluorescent Layer Bright Edge Reduction
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Solution Overview
Problem
High image quality displays with thin bezel designs often suffer from a 'bright edge' issue, which detracts from user experience.
Innovation Solution
A backlight module comprising a base with a light emitting element, a reflector layer, and a fluorescence material layer, where the fluorescence material layer is positioned on the reflector layer with a length less than the reflector layer, and includes patterns or protrusions to optimize light distribution and reduce bright edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If thin bezel design is used to improve image quality and aesthetics, then display aesthetics and image quality are improved, but bright edge issue occurs around the display
Solution Approach 1:
A fluorescence material layer is introduced as an intermediary component between the light emitting element and the display panel. This layer converts blue light from LEDs into yellow-green light through photoluminescence, effectively reducing the bright edge effect while maintaining thin bezel design. The fluorescence material acts as a mediator that transforms the light characteristics to eliminate harmful bright edges.
Solution Approach 2:
The patent changes the spectral parameters of the light by using fluorescence materials with specific emission characteristics. By selecting fluorescence materials with appropriate emission wavelengths and decay times, the system transforms the light output to reduce bright edges. The parameter optimization includes adjusting the fluorescence material composition, thickness, and positioning to achieve optimal light distribution.
2Object-generated harmful factors
If fluorescence material layer is added to reduce bright edge, then bright edge issue is improved, but device complexity increases
Solution Approach 1:
The fluorescence material layer is merged with the existing backlight module structure, specifically integrated between the light emitting element and the display panel. This merging approach allows the fluorescence layer to function as part of the standard backlight assembly, avoiding additional complex components. The integration maintains compatibility with existing manufacturing processes while adding the bright edge reduction functionality.
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 configuration improves the bright edge issue by combining light from the light emitting element with fluorescence material emissions, enhancing color uniformity and luminous efficiency while reducing production costs.
Implementation Method 1
a fluorescence material layer (124) on the reflector layer (123)
Data Source
AI summary
A backlight module for a display is provided. The backlight module includes a base, a light emitting element, a reflector layer and a fluorescence material layer. The base includes a backplane and a sidewall, and the backplane connects to the sidewall to define a space. The light emitting element is on the backplane and in the space. The reflector layer is on the sidewall. The fluorescence material layer is on the reflector layer. The sidewall and the fluorescence material layer are on opposite sides of the reflector layer. The fluorescence material layer has a length less than a length of the reflector layer.