Backlight Module Optical Film Accommodating Space Thinning
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Solution Overview
Problem
Conventional backlight modules for TFT-LCDs face challenges in reducing thickness due to the inclusion of optical films and tapes, which increase the module's thickness and hinder product thinning.
Innovation Solution
A backlight module design featuring a light guide plate, an optical film with accommodating spaces, and a light source module where the light-emitting diodes' frame areas are positioned within these spaces, allowing for efficient light emission and reduced thickness without additional fixing structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If optical film and tape are used to attach the optical film to the frame, then the optical film is securely fixed, but the thickness of the backlight module increases
Solution Approach 1:
The patent combines the fixing function into the optical film itself by forming a fixing protrusion directly on the optical film that engages with the light guide plate, eliminating the need for separate tapes or additional fixing structures, thus reducing thickness while maintaining stability
Solution Approach 2:
The fixing protrusion is formed as an integrated structure within the optical film layer, nesting the fixing mechanism inside the existing optical film rather than adding external fixing components, which reduces overall module thickness
2Reliability
If additional fixing structures are added to secure the optical film, then the fixing reliability improves, but the device complexity increases
Solution Approach 1:
The fixing function is merged with the optical film structure by forming a fixing protrusion directly on the optical film that engages with the light guide plate, eliminating the need for separate tapes or additional fixing structures, thus reducing thickness while maintaining stability
Solution Approach 2:
The optical film structure itself provides the fixing function through the fixing protrusion that automatically engages with the light guide plate during assembly, making the system self-fixing without requiring external fixing components or complex assembly processes
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
This design facilitates the thinning of display devices by minimizing light loss and eliminating the need for extra fixing structures, ensuring uniform light distribution to the display panel while maintaining module thickness.
Implementation Method 1
The light source module has at least one light-emitting surface, which can be divided into a light-emitting area and a frame area. The light-emitting area faces the light guide plate
Implementation Method 2
A backlight module usually includes an optical film (such as a diffusion film)
Data Source
AI summary
A backlight module is provided, including a light guide plate, an optical film, and a light source module. The optical film is disposed on the light guide plate and has an accommodating space. The light source module has at least one light-emitting surface, which can be divided into a light-emitting area and a frame area. The light-emitting area faces the light guide plate, and at least a portion of the frame area enters the accommodating space.