Backlight Module Corner Reflectors for Luminance Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional direct backlight modules for LCDs suffer from non-uniform brightness due to dark areas at the corners and edges, which complicates design and manufacturing and reduces overall luminance uniformity.
Innovation Solution
The implementation of reflectors on the corner portions of the backlight module, made from materials like silver or polyethylene terephthalate resin, to redirect light and enhance luminance uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If additional light sources are disposed on the corner or edge portions of the backlight module, then the brightness uniformity is improved, but the design and manufacturing procedures become more complicated
Solution Approach 1:
A reflector is introduced as an intermediary component between the LED array and the corner/edge areas. The reflector redirects light from the LED array to these regions, improving brightness uniformity without adding more light sources, thus avoiding increased design and manufacturing complexity
Solution Approach 2:
Instead of adding light sources in the horizontal plane (corner/edge positions), the solution uses a vertical dimension by placing a reflector that redirects light from the LED array upward and then reflects it into the corner/edge areas, achieving uniformity through spatial redirection rather than additional sources
2Illumination intensity
If additional light sources are disposed on the corner or edge portions of the backlight module, then the brightness uniformity is improved, but the control of brightness uniformity becomes more difficult
Solution Approach 1:
The reflector serves as a passive intermediary that automatically redirects light based on its geometric shape and position. This eliminates the need for complex control mechanisms to manage additional light sources, as the reflector naturally distributes light to achieve uniformity without requiring active control
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 effectively reduces dark areas and improves luminance uniformity, increasing the overall quality and efficiency of the backlight module with minimal impact on light intensity, enhancing image quality by 4%.
Implementation Method 1
By disposing a reflector on the corner portions of the backlight module, the undesired dark areas on the corner portions or the edges of the backlight module can be reduced
Data Source
AI summary
A plurality of reflecting structures are provided at the corner portions of a backlight module, so that the dark areas occurring at the corner portions or edges of the backlight module are prevented from forming, thereby uniforming the luminance performed by the display.