Display Light-Emitting Unit With Electrically Separated Devices Under Single Lens
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Solution Overview
Problem
Existing light-emitting units for backlights in displays struggle to achieve high-quality illuminating light with high contrast and luminance, often resulting in reduced luminance quality due to the limited number of light-emitting devices and the use of special reflecting sheets that increase costs and may deteriorate luminance.
Innovation Solution
A light-emitting unit design featuring two or more light-emitting devices covered by a single lens, which are electrically separated to allow independent driving, and a reflecting sheet with fitting sections that can be fixed without additional pins, enhancing contrast and maintaining luminance quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple light-emitting devices are covered by a single lens, then device complexity is reduced, but manufacturing precision becomes more difficult to achieve
Solution Approach 1:
The patent divides the light-emitting devices into multiple electrically independent groups, with two or more devices covered by each lens. This segmentation allows independent control of luminance for each device while maintaining a simplified optical structure, resolving the contradiction between reduced device complexity and maintained manufacturing precision.
2Illumination intensity
If special reflecting sheets are used to enhance luminance quality, then illumination quality is improved, but costs increase
Solution Approach 1:
The patent enables the light-emitting devices to self-regulate their luminance output through independent electrical control. By controlling which devices are active within each lens group, the system achieves high luminance quality without requiring special reflecting sheets, thereby reducing manufacturing costs while maintaining illumination quality.
3Illumination intensity
If the number of light-emitting devices is increased, then luminance quality is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple light-emitting devices under a single lens structure, creating lens groups that contain two or more devices. This merging approach increases the effective luminance output while maintaining a compact and simple overall structure, avoiding the complexity that would arise from having separate lenses for each device.
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 design achieves high-quality illuminating light with improved contrast and reduced costs by allowing steep changes in luminance between lighting-on and lighting-off regions, while minimizing the need for special fixing members, thus maintaining luminance quality.
Implementation Method 1
a lens that covers each of the light-emitting devices
Implementation Method 2
a reflecting sheet provided on the substrate, having an opening for each of the lenses
Data Source
AI summary
A light-emitting unit includes a plurality of lenses; and two or more light-emitting devices covered by each of the lenses, and the two or more light-emitting devices covered by one lens of the lenses are electrically separated from each other.