Transparent Middle Frame Backlight Module for Frameless Displays
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Solution Overview
Problem
Existing display devices suffer from low display effects due to areas of the display panel darkening and inability to achieve a visual frameless effect, primarily caused by non-transparent structures in the middle frame blocking light emission.
Innovation Solution
A backlight module design featuring a transparent second frame body supporting an optical film layer, allowing light to pass through and enhance display panel brightness, combined with a frame structure that supports a display panel to minimize edge blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a non-transparent middle frame structure is used to support the optical film layer, then the structural support function is achieved, but light emission is blocked causing display panel darkening
Solution Approach 1:
The middle frame structure is changed from non-transparent to transparent material, allowing light to pass through while maintaining structural support function. This transparency change resolves the contradiction by enabling both structural integrity and light transmission for display panel brightness.
Solution Approach 2:
The middle frame is constructed using composite material structure combining transparent materials that provide both mechanical strength for supporting the optical film layer and optical transparency for light transmission, thus resolving the contradiction between structural support and illumination.
2Adaptability or versatility
If a traditional middle frame structure is used, then the optical film layer can be supported, but the visual frameless effect cannot be achieved
Solution Approach 1:
The traditional opaque middle frame structure is extracted and replaced with a transparent version, removing the visual obstruction while maintaining the structural support function. This allows the display panel to achieve a visual frameless effect while the middle frame continues to provide necessary structural support for the optical film layer.
3Use of energy by moving object
If the optical film layer is positioned close to the light source for efficiency, then light utilization is improved, but edge areas become blocked by the middle frame
Solution Approach 1:
Changing the middle frame from opaque to transparent material allows light to pass through the frame structure, expanding the effective light emission area to include edge regions while maintaining close positioning of the optical film layer to the light source for efficient light utilization.
Data Source
AI summary
The present disclosure provides a backlight module, a display device and an assembled display device. The backlight module includes: a backplate (1), including a bottom wall (101); a light source (3), disposed on the bottom wall (1); an optical film layer, disposed opposite to the bottom wall (101) and located on a light emitting side of the light source (3); a middle frame, including a first frame body (4) and a second frame body (5), where the first frame body (4) is arranged around periphery of the bottom wall (101), the second frame body (5) is arranged on an inner side surface of the first frame body (4), and the second frame body (5) includes a transparent structure; and the optical film layer (6) is supported at one end of the second frame body (5) away from the bottom wall (101). The present disclosure can improve display effect.