Flat Base Substrate Backlight Module for Curved Displays
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Solution Overview
Problem
Existing curved surface display technologies face challenges in preventing bending internal stress in backlight modules, leading to reduced product yield and risk of glass breakage due to extrusion internal stress on film layers.
Innovation Solution
A display apparatus with a flat plate structure base substrate in the backlight module, which prevents bending internal stress and includes light-emitting elements arranged at unequal intervals to ensure uniform backlight brightness across different regions of the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a curved surface backlight module is used to match the curved display panel, then the display apparatus can achieve a curved surface display effect, but the backlight module is subjected to bending internal stress which reduces product yield and risks glass breakage
Solution Approach 1:
The patent segments the backlight module into multiple independent components: a flat base substrate, a separate curved adhesive layer, and light-emitting elements. The adhesive layer is specifically designed to be curved to match the display panel, while the base substrate remains flat to avoid bending stress. This segmentation allows the curved function to be achieved without subjecting the entire backlight module to bending internal stress.
Solution Approach 2:
The patent introduces a curved adhesive layer as an intermediary between the flat base substrate and the curved display panel. This adhesive layer acts as a mediator that transfers the curved shape requirement from the display panel to the backlight module without causing bending stress to the base substrate, thereby maintaining both the curved display effect and structural reliability.
2Device complexity
If light-emitting elements are arranged at equal intervals in the backlight module, then the structure is simple, but the backlight brightness is not uniform across different regions of the curved display panel
Solution Approach 1:
The patent applies local quality by arranging light-emitting elements at unequal intervals based on their specific positions in the curved backlight module. Elements in different regions (e.g., edge regions vs. center regions) have different spacing to compensate for the curvature effect, ensuring that each local region contributes appropriately to the overall uniform backlight output despite the curved geometry.
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 prevents damage to the backlight module, ensures higher yield of the display apparatus, and achieves better brightness uniformity across different regions of the display panel, resulting in an improved display effect.
Implementation Method 1
a plurality of light-emitting elements arranged in an array and disposed on one side of the base substrate
Data Source
AI summary
In a backlight module of a display apparatus, the base substrate is a flat plate structure, so that the backlight module can be prevented from being subjected to a bending internal stress, thereby avoiding a damage to the backlight module and ensuring a yield of the display apparatus. At the same time, the difference of backlight brightness provided by the backlight module to different regions of the display panel is smaller, so that brightness uniformity of different regions of the display apparatus can be ensured, and a display effect of the display apparatus is better.