Backlight Module Side Plate Light Source Mounting for Narrow Bezel
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Solution Overview
Problem
Existing display devices with side-lit backlight modules struggle to achieve a narrow bezel design due to the inability to effectively reduce the width of the backlight module, despite efforts to minimize the Pad region of the display panel.
Innovation Solution
The proposed solution involves a backlight module design with a light guide plate and a light source mounted on a side plate, utilizing a substrate with a light-emitting element and a white wall to enhance light incidence, along with a light-shielding region covered by a tape, which reduces the horizontal dimension and width of the light-shielding region, thereby narrowing the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the Pad region of the display panel is minimized to achieve narrow bezel, then the width of the Pad region is reduced, but the width of the backlight module remains large and prevents achieving the desired narrow bezel effect
Solution Approach 1:
The light source is mounted on the side plate rather than the base plate, changing the spatial arrangement from a planar layout to a three-dimensional configuration. This dimensional change allows the light source to be positioned at the edge of the backlight module, significantly reducing the horizontal width requirement while maintaining lighting functionality.
Solution Approach 2:
The backlight module is divided into functional zones: the base plate for light guide plate placement, side plates for light source mounting and structural support, and a light-shielding region. This segmentation allows independent optimization of each zone, enabling the light source to be positioned in the light-shielding region without affecting the main display area.
2Length of stationary object
If the light source is mounted on the side plate with substrate parallel to the side plate, then the horizontal dimension is reduced, but the mounting structure becomes more complex
Solution Approach 1:
The side plate serves multiple functions: it provides structural support for the backlight module, serves as a mounting platform for the light source, and acts as a light-shielding barrier. This multi-functionality reduces the need for additional components and simplifies the overall mounting structure despite the three-dimensional configuration.
Solution Approach 2:
The substrate is integrated directly with the side plate, merging the mounting structure with the light source assembly. The wiring structure is embedded in the substrate, combining electrical connection and mechanical support into a single integrated component, reducing assembly complexity.
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 design effectively reduces the width of the backlight module, allowing for a narrower bezel in display devices by optimizing the light source's placement and structure, improving light distribution and reducing the length of light-shielding tape needed.
Implementation Method 1
a light-emitting element disposed on the substrate, one light emergent side of the light-emitting element is opposite to the light incident side of the LGP
Data Source
AI summary
Embodiments of the present disclosure provide a backlight module and a display device. The backlight module includes a backboard, the backboard includes a base plate and a plurality of side plates perpendicular to the base plate. The plurality of side plates are connected end to end around the base plate, and define an accommodating space having an opening with the base plate. The backlight module further includes a light guide plate (LGP) located in the accommodating space and a light source located at a light incident side of the LGP. The light source includes a substrate and a light emitting element disposed on the substrate, the substrate is parallel to and mounted on one side plate. One light emergent side of the light-emitting element (302) is opposite to the light incident side of the LGP.