Slim Border Backlight Module with Segmented Frame
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Solution Overview
Problem
Conventional backlight modules face challenges in achieving a slimmer border design while maintaining structural strength and display efficiency, as reducing the thickness of plastic or metal frames compromises the module's integrity.
Innovation Solution
The proposed solution involves a backlight module design comprising a bezel, a supporting frame, and a light source module, where the bezel has a back plate and side wall with extending walls, and the supporting frame includes an upper and lower frame body, allowing for a slimmer border without compromising structural integrity by distributing the upper frame body and extending walls to enclose a panel accommodation space above the light source module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the thickness of the plastic frame or wall is reduced to achieve a slimmer border, then the border slimness is improved, but the structural strength and manufacturing feasibility deteriorate due to manufacturing method limitations
Solution Approach 1:
The frame is divided into multiple components: a bezel (including back plate and side wall) and a supporting frame (including upper and lower frame bodies). This segmentation allows each part to be optimized independently, enabling the overall frame to be thinner while maintaining structural integrity through the distributed support structure.
Solution Approach 2:
The upper frame body is positioned in a different spatial arrangement, extending from the top of the lower frame body and laterally shifting to be located over the side wall. This three-dimensional reconfiguration provides structural support in multiple dimensions, allowing reduced frame thickness while maintaining strength.
2Length of stationary object
If the thickness of the metal frame is reduced to achieve a slimmer border, then the border slimness is improved, but the structural strength of the whole backlight module deteriorates
Solution Approach 1:
The supporting frame is segmented into upper and lower frame bodies that work together to provide distributed support. The lower frame body supports the backlight module, while the upper frame body extends upward and laterally to provide additional support over the side wall, enabling thinner overall construction without strength loss.
Solution Approach 2:
The frame structure combines different materials and configurations: the bezel (back plate and side wall) works in conjunction with the supporting frame (upper and lower frame bodies). This composite approach allows optimization of each component's thickness and material properties to achieve overall structural strength with reduced total frame thickness.
3Length of stationary object
If conventional frame designs are used to maintain structural strength, then the strength is preserved, but the border cannot be made slimmer and the display area cannot be enlarged
Solution Approach 1:
By segmenting the frame into bezel and supporting frame components, the structural support function is distributed across multiple elements. This allows the outer dimensions to be reduced (thinner border) while the internal support structure maintains the necessary strength, thereby enabling larger display area relative to the overall device size.
Solution Approach 2:
The upper frame body's lateral extension and vertical positioning create a three-dimensional support architecture that provides structural strength without increasing the two-dimensional footprint. This enables thinner borders while maintaining support capability, effectively enlarging the display area.
4Manufacturing precision
If conventional frame designs are used, then manufacturing is straightforward, but cumulative tolerance in the frame increases affecting precision
Solution Approach 1:
Segmenting the frame into modular components (bezel with back plate and side wall, supporting frame with upper and lower frame bodies) allows each part to be manufactured and assembled separately. This reduces cumulative tolerance issues by minimizing the number of sequential manufacturing steps and joints, while the modular nature actually simplifies the manufacturing process for each individual component.
Data Source
AI summary
A backlight module includes a bezel, a supporting frame, and a light source module. The bezel includes a back plate and a side wall connected to an edge of the back plate; the supporting frame includes a lower frame body and an upper frame body extending from a top of the lower frame body, wherein the lower frame body is disposed on the back plate and surrounded by the side wall. The upper frame body has at least a portion laterally shifted relative to the lower frame body to be located over the side wall. The light source module is surrounded by the lower frame body, wherein the portion of the upper frame body located over the side wall encloses a panel accommodation space above a top of the light source module. A display device includes the above-mentioned backlight module and a display panel disposed in the panel accommodation space.