Backlight Substrate and Reflective Sheet Layout for Uniform Luminance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in reducing manufacturing costs, ensuring sufficient light distribution, particularly in areas far from light sources, and improving luminance and light uniformity of backlight units.
Innovation Solution
A display device design featuring a substrate with elongated first plates and intersecting second plates, coupled with reflective sheets and light sources, enhances light distribution and uniformity by using reflective materials and optical components to manage light dispersion effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a substrate with multiple light sources is used, then light distribution coverage is improved, but manufacturing cost increases
Solution Approach 1:
The substrate is divided into multiple sections with second plates extending from the first plate at different positions. This segmentation allows light sources to be distributed across different zones, expanding light coverage area while maintaining a modular structure that can be manufactured efficiently through standardized processes.
Solution Approach 2:
The substrate structure transitions from a simple planar arrangement to a three-dimensional configuration with first and second plates extending in different directions. This dimensional expansion enables light sources to be positioned at multiple heights and locations, increasing coverage area without proportionally increasing manufacturing complexity.
2Area of stationary object
If light sources are positioned far apart to cover wide area, then light distribution uniformity deteriorates
Solution Approach 1:
Different regions of the substrate have different structural characteristics - the first plate provides a base structure while second plates extend at specific positions to create localized light distribution zones. This local quality variation ensures that each area receives appropriate light intensity, maintaining uniformity across the entire coverage area despite the extended spacing between light sources.
3Illumination intensity
If reflective sheet is added to improve light uniformity, then device complexity increases
Solution Approach 1:
The reflective sheet is integrated with the substrate structure rather than being a separate additive component. The reflective properties are combined with the existing plate structure, allowing light uniformity improvement without significantly increasing device complexity or requiring additional assembly steps.
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 reduced manufacturing costs, ensures adequate light distribution across a wide area, and improves luminance and uniformity of backlight units, addressing the limitations of existing technologies.
Implementation Method 1
a reflective sheet which have a plurality of holes in which the plurality of light sources are located
Data Source
AI summary
Disclosed is a display device. The display device of the present disclosure may include: a display panel; a frame which is located in a rear of the display panel and to which the display panel is coupled; a substrate which is located between the display panel and the frame and coupled to the frame; a plurality of light sources which are mounted on the substrate and spaced apart from each other; and a reflective sheet which have a plurality of holes in which the plurality of light sources are located, wherein the substrate may include: an elongated first plate; and a plurality of second plates which extend from the first plate in a direction intersecting with a length direction of the first plate, and are spaced apart from each other in the length direction of the first plate, wherein the reflective sheet may be coupled to the first plate and the plurality of second plates.