Backlight Module Multi-Row LED Arrangement for Slim Profile
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Solution Overview
Problem
High power LEDs required for enhanced brightness in backlight modules increase the thickness of light-guiding plates, compromising the slimness and lightness of products.
Innovation Solution
A lighting apparatus with a light-guiding plate and a lighting unit featuring first and second light sources disposed on a circuit board at different distances from a reference line, allowing for more light sources to be arranged without increasing the plate thickness, using lower brightness LEDs which are thinner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high power LEDs are used to enhance brightness, then illumination intensity is improved, but the thickness of the light-guiding plate increases
Solution Approach 1:
The patent transitions from a conventional single-row LED arrangement to a multi-dimensional configuration where LEDs are arranged in multiple rows at different distances from the light-guiding plate. This spatial reconfiguration allows more LEDs to be positioned within the same thickness envelope, increasing total light output without requiring increased plate thickness. The multi-row arrangement effectively utilizes three-dimensional space to resolve the contradiction between brightness enhancement and maintaining slim profile.
Solution Approach 2:
The LED array is segmented into multiple rows with different distances from the light-guiding plate reference line. This segmentation allows each row to contribute differently to the overall illumination, enabling optimized light distribution while maintaining a compact thickness. The first row at a first distance and the second row at a second distance create a distributed light source configuration that enhances brightness without increasing the light-guiding plate thickness.
2Illumination intensity
If more light sources are arranged to enhance brightness, then illumination intensity is improved, but device complexity increases
Solution Approach 1:
The patent employs LEDs that serve multiple functions: they provide illumination while also being arranged in a configuration that optimizes light distribution across different zones. The same LED components are used in multiple rows, and the circuit board integrates control for all LEDs, creating a universal lighting solution that enhances brightness without proportionally increasing complexity. The multi-row arrangement uses identical or similar LED components, reducing the need for different specialized parts.
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 brightness while maintaining product slimness, allowing for more efficient use of space and reducing the overall thickness of the light-guiding plate, thus improving product competitiveness.
Implementation Method 1
light emitted by the first and second light sources enters into the light-guiding plate through the light-incident surface and exits the light-guiding plate through the light-emitting surface
Data Source
AI summary
A lighting apparatus includes a light-guiding plate and a lighting unit. The light-guiding plate includes a light-incident surface and a light-emitting surface. The lighting unit includes a first light source, a second light source and a circuit board. The first and second light sources are disposed on the circuit board, and the light emitted by the first and second light sources enters into the light-guiding plate through the light-incident surface and exits the light-guiding plate through the light-emitting surface. A first distance from the first light source to a reference line of the light-incident surface is not equal to a second distance from the second light source to the reference line.