LED Lens Array with Connecting Strings for Backlight
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Solution Overview
Problem
The existing backlight devices for larger display devices require a significant amount of man-hours to install multiple LED lenses, which can lead to distortion and increased complexity due to the large number of parts involved.
Innovation Solution
An LED lens array is designed with a plurality of LED lenses connected by lens strings that extend from their side surfaces, allowing light to pass through, and featuring a supporting member to reduce the number of parts and minimize distortion, with the lens strings being narrower than the lenses and capable of guiding light between connected lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LED lenses are installed on each LED in a direct type backlight device, then light diffusion is improved, but the number of parts increases and assembly time increases
Solution Approach 1:
Multiple LED lenses are integrated into a single array structure where multiple lenses are arranged in a matrix pattern and mounted together on a single LED chip. This merging of multiple lens components into one integrated unit reduces the total number of separate parts and simplifies assembly operations, directly addressing the contradiction between achieving good light diffusion (which requires multiple lenses) and reducing assembly time (which requires fewer parts).
Solution Approach 2:
The LED lens array is designed as a universal component that can be mounted on a single LED chip while providing the light diffusion effect of multiple separate lenses. The array structure serves multiple functions simultaneously: it diffuses light effectively like multiple lenses would, reduces part count for easier assembly, and maintains a compact form factor suitable for various display device applications.
2Illumination intensity
If multiple LED lenses are installed on each LED, then light diffusion is improved, but the complexity of the device structure increases
Solution Approach 1:
The patent combines multiple LED lens functions into a single integrated array component that mounts on one LED chip. This merging approach achieves the light diffusion benefits of multiple lenses while reducing structural complexity by eliminating the need for separate mounting structures, alignment mechanisms, and individual lens holders that would be required if multiple separate lenses were installed.
Solution Approach 2:
The LED lens array is segmented into multiple individual lens elements arranged in a matrix, where each lens element can be independently designed and manufactured. This segmentation allows for standardized production of lens units that can be easily assembled into arrays, reducing overall device complexity while maintaining effective light diffusion properties.
3Area of stationary object
If the number of LEDs and LED lenses increases for larger display devices, then light coverage is improved, but assembly time and labor cost increase
Solution Approach 1:
The patent applies the lens array concept to cover larger display areas by using multiple LED lens arrays instead of multiple individual lenses. Each array covers a specific region, and by strategically positioning these arrays across the display surface, comprehensive light coverage is achieved while significantly reducing assembly time compared to installing individual lenses on each LED.
Solution Approach 2:
The invention transitions from a one-dimensional arrangement of individual lenses along LED rows to a two-dimensional matrix array structure. This dimensional change allows for more efficient space utilization and light distribution across larger display areas, reducing the total number of lens components needed while maintaining comprehensive coverage.
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 configuration reduces the number of parts needed for assembly, decreases man-hours, and minimizes lens distortion, while effectively distributing light across the display device.
Implementation Method 1
each of the plurality of lens strings may extend from side surfaces of each of the plurality of LED lenses, and is configured to allow light emitted from each of the plurality of LED lenses to pass therethrough
Implementation Method 2
Each of the plurality of lens strings may be formed to guide light emitted from first LED lens among the first LED lens and second LED lens connected each other to the second LED lens and guide light emitted from the second LED lens to the first LED lens
Implementation Method 3
A portion of the lens string corresponding to a lower end of the supporting member may be provided with a reflector reflecting light guided through the lens string toward the supporting member
Data Source
AI summary
An LED lens array for a direct type backlight device, according to the present disclosure, comprises: a plurality of LED lenses disposed on a plane; and a plurality of lens strings connecting the plurality of LED lenses, wherein each of the plurality of lens strings extends from each side of each of the plurality of LED lenses, and is configured to allow light emitted from each of the plurality of LED lenses to pass therethrough, wherein the width of each of the plurality of lens strings is smaller than the diameter of each of the plurality of LED lenses.