Quantum Dot LED Backlight Integration for Thin Display Modules
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Solution Overview
Problem
Conventional mini-LED LCD backlights face issues with assembly failures and peeling of quantum dot films due to their separation from the light source, which affects the brightness and thickness of the display.
Innovation Solution
A quantum dot LED backlight source is designed with a light source quantum dot diaphragm, a support diaphragm, and a prism sheet, where the mini light emitting diodes, quantum dot film, and prisms are integrated to form a single body, facilitating automated assembly and enhancing brightness through light collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the quantum dot film is separated from the light source in conventional mini-LED LCD backlight, then the assembly process is simpler, but assembly failures occur and the quantum dot film is easy to peel off when cut
Solution Approach 1:
The patent merges the quantum dot film with the light source by integrating the quantum dot diaphragm directly onto the mini-LED array substrate. This integration ensures that the quantum dot film and light source move together as a unified structure, eliminating assembly failures and peeling issues while maintaining manufacturing simplicity through a combined assembly process.
2Illumination intensity
If the quantum dot film is brightened with prisms to compensate for low efficiency, then the brightness is improved, but the backlight module thickness increases and the conventional backlight form is maintained
Solution Approach 1:
The patent combines the quantum dot diaphragm, prism structures, and light source into a single integrated assembly. The prism structures are formed directly on the quantum dot diaphragm layer, eliminating the need for separate thick backlight components and reducing overall module thickness while maintaining brightness enhancement functionality.
Solution Approach 2:
The patent transitions from a conventional multi-layer stacked backlight structure to a planar integrated structure where prisms are formed directly on the quantum dot diaphragm. This dimensional reorganization reduces the thickness direction complexity while maintaining the light collection and brightness enhancement functions in the plane of the display.
3Length of stationary object
If mini-LEDs are used as backlight source, then ultra-thinness and multi-partition are achieved, but the quantum dot film needs additional brightening with prisms due to low efficiency
Solution Approach 1:
The patent integrates the prism structures directly onto the quantum dot diaphragm layer, combining the thin-film quantum dot structure with light-collecting prism functionality. This merger maintains the ultra-thin profile of mini-LED backlights while providing built-in brightness enhancement without requiring additional thick components.
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 integration of mini light emitting diodes with the quantum dot film and prisms improves assembly reliability, enhances brightness by efficient light collection, and achieves a thinner backlight module.
Implementation Method 1
the mini light emitting diode layer includes a plurality of mini light emitting diodes spaced apart, the quantum dot film layer and the mini light emitting diode layer are bonded together
Implementation Method 2
a prism sheet which are disposed sequentially; wherein the light source quantum dot diaphragm includes a flexible printed circuit board, a mini light emitting diode layer, and a quantum dot film layer which are disposed sequentially
Data Source
AI summary
A quantum dot light emitting diode (LED) backlight source which includes a light source quantum dot diaphragm, a support diaphragm, and a prism sheet which are disposed sequentially. The light source quantum dot diaphragm includes a flexible printed circuit board, a mini light emitting diode layer, and a quantum dot film layer which are disposed sequentially. The mini light emitting diode layer includes a plurality of mini light emitting diodes spaced apart, the quantum dot film layer and the mini light emitting diode layer are bonded together.