Backlight Module Groove Light Beads Gap Brightness
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Solution Overview
Problem
Mini-LED backlight modules experience image quality issues due to dark lines caused by gaps between light plates, leading to suboptimal optical effects and brightness.
Innovation Solution
A backlight module design featuring a groove portion on the edges of adjacent light plates with third light beads and a reflective layer, which enhances edge brightness and reflects light into the gaps between plates, improving overall optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If small-sized Mini-LED light plates are assembled together to form large-size light plates, then the large-size backlight display is achieved, but gaps between the light plates cause dark lines and deteriorate optical effect
Solution Approach 1:
A light guide plate is introduced as an intermediary component between adjacent light plates. The light guide plate receives light from LEDs at its edge and guides this light into the gap regions between light plates, effectively mediating the light distribution to eliminate dark lines while maintaining the modular assembly structure.
Solution Approach 2:
The light guide plate is designed with non-uniform optical properties - specifically, its edge portions have different light guiding characteristics compared to the center portion. This local quality variation enables preferential light distribution to the gap regions, brightening the edges and eliminating dark lines without affecting the overall uniformity of the backlight.
2Ease of manufacture
If gaps exist between adjacent light plates, then assembly flexibility is improved, but light emitted into the gap cannot be reflected back resulting in dark lines
Solution Approach 1:
The light guide plate serves as a mediator that captures light escaping into the gap and redirects it back into the display area. This intermediary structure allows the gaps to remain for assembly flexibility while preventing light loss, as the light guide plate intercepts and reroutes the otherwise wasted light.
Solution Approach 2:
The gap, which originally causes light loss and dark lines, is converted into a beneficial feature by using the light guide plate to capture and redirect the light that would otherwise be lost. The gap structure is utilized to position the light guide plate effectively, turning the harmful light leakage into an opportunity for improved light distribution.
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 increases brightness between light plates, reduces dark lines, and enhances the optical effect by utilizing the groove portion, third light beads, and reflective layer to improve light utilization and uniformity.
Implementation Method 1
The reflective layer is disposed on the bottom and/or the side wall of the groove portion, and reflects the light irradiated into the gap between the first light plate and the second light plate
Implementation Method 2
The third light bead and the reflective layer are arranged in the groove portion
Data Source
AI summary
A backlight module and a display device are disclosed. The backlight module includes a back plate, a first light source assembly, and a second light source assembly. The first light source assembly includes a first light plate and a plurality of first light beads. The second light source assembly includes a second light plate and a plurality of second light beads. An edge of the first light plate and an edge of the second light plate are adjacent to form a groove portion. The backlight module further includes at least one third light bead and a reflective layer which are arranged in the groove portion. The reflective layer is disposed on a bottom and/or a side wall of the groove portion, and reflects outwards the light irradiated into the gap between the first light plate and the second light plate.