Backlight Module Top Frame Border Narrowing
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Solution Overview
Problem
The existing display devices face a challenge with visibility due to borders formed by plastic casings and double-sided adhesive films, which obstruct the view path of optical artifacts and assembly features when viewed from a perpendicular angle, hindering the development of display technology.
Innovation Solution
A top frame is used to cover the periphery of the optical film structure and the lateral side of the bottom frame in a display device's backlight module, creating a receiving space for the reflector film, light guide, and optical film structure, eliminating the need for a plastic casing and reducing the border visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic casing and double-sided adhesive film are used to assemble the backlight module and panel, then the assembly is simplified and the components are easily fixed, but a border is formed that blocks the view path and reduces visibility of optical artifacts and assembly features
Solution Approach 1:
The patent removes the plastic casing from the assembly structure. By extracting this component, the border that was blocking the view path is eliminated, while the double-sided adhesive film remains to maintain the bonding function between components.
Solution Approach 2:
The patent transitions from a planar assembly approach (using adhesive film on a surface) to a three-dimensional structure by introducing a backlight module with multiple functional layers (light guide, optical film structure, frame) that extends vertically and laterally, allowing the components to be positioned in different spatial dimensions to avoid border formation.
2Device complexity
If a border is formed by the plastic casing and adhesive film, then the assembly structure is simple and easy to manufacture, but the visibility of optical artifacts like bight lines and assembly features is prevented when viewing from a perpendicular angle
Solution Approach 1:
The plastic casing is extracted from the assembly, removing the source of the border that caused the loss of visual information about optical artifacts and assembly features.
Solution Approach 2:
The assembly is segmented into distinct functional components (backlight module with light guide, optical film structure, frame, and panel) that can be independently positioned and assembled, allowing each component to be optimized for its specific function without creating unwanted borders.
3Object-affected harmful factors
If a top frame is introduced to cover the periphery of the optical film structure, then the border is narrowed and visibility is enhanced, but the device structure becomes more complex
Solution Approach 1:
The top frame is merged with the existing backlight module structure, combining the frame and optical film structure into an integrated assembly. This merging approach narrows the visible border while minimizing the increase in overall structural complexity by utilizing existing components for multiple functions.
Data Source
AI summary
A display device and a backlight module thereof are provided. The display device comprises a backlight module and a panel. The backlight module includes a bottom frame, a light guide, an optical film structure and a top frame. The light guide is disposed above the bottom frame. The optical film structure is disposed above the light guide. The top frame covers a periphery of the optical film structure and covers a lateral side of the bottom frame. The panel is disposed above the top frame.