Curved Reflector Plate Eliminates Display Corner Shadows
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Solution Overview
Problem
Traditional direct-lit liquid crystal displays suffer from shadow phenomena at the corners due to inadequate brightness, which existing solutions have not effectively addressed.
Innovation Solution
A reflector plate design featuring a reflecting main board and inclined reflecting side board with stitching or fold lines forming a curved surface, which reduces the distance to the backlight source, enhancing corner brightness and eliminating shadows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional direct-lit backlight design is used, then the structure is simple and cost is low, but shadow phenomena appear at the four corners due to insufficient brightness
Solution Approach 1:
The reflector plate incorporates curved surfaces at the corner regions instead of flat surfaces. The curved reflecting surface is formed by arranging stitching lines or fold lines at turning corners of the reflecting side board, creating a curved geometry that better directs light to the corner areas, thereby increasing corner brightness and eliminating shadow phenomena
Solution Approach 2:
The reflector plate is divided into multiple functional regions: a reflecting main board and a reflecting side board with turning corners. The stitching lines or fold lines segment the reflecting side board into specific geometric configurations, allowing different parts of the reflector plate to serve different optical functions - the main board provides overall reflection while the segmented corner regions specifically address corner illumination
2Length of stationary object
If the reflecting side board is made flat and perpendicular to the main board, then manufacturing is simple, but the distance to the backlight source at corners is too large, causing shadow effects
Solution Approach 1:
By forming curved surfaces through stitching lines or fold lines at the turning corners, the reflecting surface naturally curves closer to the backlight source at corner regions. This curved geometry reduces the effective distance between the reflecting surface and the backlight source, improving light collection efficiency without requiring complex mechanical adjustments
Solution Approach 2:
The reflector plate design changes the geometric parameters of the reflecting side board by introducing curvature through stitching or folding. This parameter change transforms the flat surface into a curved surface with varying distances to the backlight source, optimizing the distance parameter at corner regions to reduce shadow effects
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 increases corner brightness and achieves more uniform overall brightness by ensuring smooth light transition and closer proximity of the curved reflecting surface to the backlight source, effectively eliminating the shadow phenomenon.
Implementation Method 1
the reflecting side board between the first stitching line and the second stitching line forms a curved reflecting surface
Data Source
AI summary
The present application relates to a reflector plate, a backlight module and a display terminal. The reflector plate includes a reflecting main board and a reflecting side board arranged at the periphery of the reflecting main board, and the reflecting side board is connected to the side edge of the reflecting main board. A first stitching line and a second stitching line, or a first fold line and a second fold line are arranged at a turning corner of the reflecting side board, such that an included angle is formed therebetween. After assembly, the reflecting side board can incline relative to the reflecting main board, and the reflecting side board between the first stitching line and the second stitching line or between the first fold line and the second fold line forms a curved reflecting surface.