Backlight Module Reflector Arc Pattern for Color Mixing
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Solution Overview
Problem
Conventional backlight modules for liquid crystal displays often produce uneven color balance due to limited light mixing spaces, resulting in yellow or blue tinted light instead of pure white, making them unsuitable for compact applications.
Innovation Solution
A backlight module design featuring a light guide plate, a reflector with a reflection pattern of irregularly arranged arc-shaped reflective dots, and a diffusing film that expands the light mixing space, allowing for full mixing of red, green, and blue light beams to produce pure white light without increasing the module's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the size of the plastic frame is increased to provide sufficient light mixing space, then the color balance of light output is improved, but the size of the backlight module increases
Solution Approach 1:
The reflector is designed with a specific reflection pattern featuring arc-shaped reflective dots arranged in a predetermined pattern, creating localized optical properties that enhance light mixing efficiency in specific areas without requiring an overall increase in module size
Solution Approach 2:
The reflective dots are designed with arc-shaped curvature, which helps to scatter and redirect light beams in multiple directions, enhancing the mixing of red, green, and blue light components to achieve pure white light output within a compact space
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 ensures optimized optical performance by achieving pure white light output over a larger area, enabling the use of liquid crystal displays in compact and small-scale applications without the need for a larger module size.
Implementation Method 1
The reflector 18 includes an inner surface 182 facing the diffusing film 16, and a pattern 184 formed at the inner surface 182
Data Source
AI summary
An exemplary backlight module (11) includes a light guide plate (12), a reflector (18), and a light emitting diode unit (142). The light guide plate has a light incident surface (122). The reflector is positioned adjacent to the light incident surface, and has a reflection pattern (184) thereat. The light emitting diode unit is interposed between the light incident surface and the reflector.