Triangular Pyramid Dots for Dual-View Backlight Thickness Reduction
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Solution Overview
Problem
Existing dual-view backlight modules have a complex structure and are not light and thin enough, which is disadvantageous for display devices.
Innovation Solution
A light guide plate with triangular pyramid dots, where two surfaces are reflective mirror surfaces to redirect incident light into emergent light exiting in two different directions, and a view angle control prism layer to manage light direction, reducing module complexity and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple layers of prism films are disposed on the light guide plate to achieve dual-view backlight, then high light condensation characteristics and brightness are achieved, but the structure becomes complicated and the thickness increases
Solution Approach 1:
The patent combines the functions of multiple prism films into a single integrated light guide plate structure with triangular pyramid dots. The light guide plate directly forms the light redirecting function that previously required separate prism film layers, merging multiple components into one while achieving the same dual-view backlight effect and light condensation characteristics.
Solution Approach 2:
The patent extracts the light redirecting function from the separate prism films and integrates it directly into the light guide plate through triangular pyramid dots. This eliminates the need for multiple additional film layers, simplifying the overall structure while maintaining the dual-view functionality.
2Illumination intensity
If multiple layers of prism films are disposed on the light guide plate to achieve dual-view backlight, then high light condensation characteristics and brightness are achieved, but the thickness of the backlight module increases
Solution Approach 1:
The patent merges the light guide plate and the light redirecting function into a single integrated component. The triangular pyramid dots are formed directly on the light guide plate, eliminating the need for separate prism film layers that would add to the overall thickness, thereby achieving thinning while maintaining brightness.
3Adaptability or versatility
If multiple layers of prism films are disposed on the light guide plate to achieve dual-view backlight, then dual-view display function is achieved, but the manufacturing cost increases
Solution Approach 1:
The patent combines the light guide plate and light redirecting structures into one integrated component, reducing the total number of parts that need to be manufactured and assembled. This integration simplifies the manufacturing process and reduces costs while maintaining the dual-view display function.
Solution Approach 2:
The light guide plate with triangular pyramid dots performs multiple functions simultaneously: it guides light, redirects light in specific directions for dual-view display, and maintains structural integrity. This multi-functionality reduces the need for separate specialized components, thereby lowering manufacturing complexity and cost.
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 enables a simpler, cost-effective dual-view backlight structure that maintains high light condensation and brightness while reducing module thickness and improving directivity and confidentiality of the display device.
Implementation Method 1
two of four surfaces of each of the triangular pyramid dots are light receiving surfaces facing a backlight source and the two light receiving surfaces are reflective mirror surfaces, so that incident light reaching the two light receiving surfaces from the backlight source is reflected and becomes emergent light exiting in two different directions
Data Source
AI summary
The present invention discloses a light guide plate, a backlight module and a display device. In the light guide plate, a plurality of triangular pyramid dots are provided; two of four surfaces of each of the triangular pyramid dots are light receiving surfaces facing a backlight source, and are reflective mirror surfaces, so that incident light reaching the two light receiving surfaces from the backlight source is converted into emergent light exiting in two different directions, and then the emergent light is emitted out from the upper surface of the light guide plate. In the solution, as the triangular pyramid dots capable of converting incident light from a backlight source into emergent light exiting in two specific directions are provided in a light guide plate, the effect of dual-view backlight can be realized while providing a light guide plate or dual-view backlight module with simpler structure and lower cost.