LED Display Screen Cover Arched Structures
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Solution Overview
Problem
LED displays suffer from low filling coefficient, leading to clear black areas and moire fringes due to the small light-emission area of LED lamps, resulting in reduced image definition, discomfort, and excessive brightness causing glare.
Innovation Solution
A screen cover with arched structures and scattering parts is designed to cover LED pixel units, providing a filling coefficient of over 93% by blocking and diffusing light, eliminating perceptible gaps and moire fringes, and reducing brightness to enhance viewing comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LED lamps are arranged in an array to form LED pixel units, then the display can achieve various resolutions and wireless connection, but the light-emission area is smaller than the physical surface area, resulting in low filling coefficient and clear black areas between adjacent LED pixel units
Solution Approach 1:
The patent introduces a third dimension by adding a transparent cover with arched structures above the LED pixel units. This vertical dimension allows light to be guided and scattered outward, effectively increasing the visible light-emission area without changing the physical LED lamp arrangement, thereby improving the filling coefficient while maintaining resolution adaptability
Solution Approach 2:
The transparent cover acts as an intermediary element between the LED lamps and the viewer. It receives light from the small LED emission area and redistributes it across a larger area through the arched structures, effectively mediating between the constrained light source and the desired large filling coefficient
2Manufacturing precision
If the filling coefficient is relatively small, then LED lamps can be arranged densely to achieve high resolution, but this causes graininess and lowers viewing comfort
Solution Approach 1:
The patent applies local quality by making each cover unit individually optimized with arched structures that scatter light locally. This local light scattering approach smooths the overall display appearance and reduces graininess while preserving the precise pixel arrangement needed for high resolution
3Illumination intensity
If the brightness of the LED lamp is increased to guarantee overall brightness, then the display maintains visibility, but the small light-emitting region causes glare that is uncomfortable for long-term viewing
Solution Approach 1:
By adding the vertical dimension with the transparent cover, the patent distributes the bright LED light over a larger spatial volume. The arched structures guide light at various angles, converting the concentrated intense light into a more diffuse illumination pattern that maintains brightness while reducing glare
Solution Approach 2:
The arched (curved) structures of the transparent cover scatter light in multiple directions rather than allowing it to travel straight forward. This curvature-based light scattering reduces the intensity of direct light reaching the viewer's eyes, thereby reducing glare while preserving overall brightness through distributed light paths
4Use of energy by moving object
If parallel grooves are added to the transparent cover to change emitting angle and gather light, then light gathering capability is improved, but the structure becomes more complex
Solution Approach 1:
The patent uses simple arched (curved) structures instead of complex parallel grooves to achieve light gathering and angle control. The curvature naturally guides light paths and achieves the desired emitting angle modification with a simpler, more elegant structure that is easier to manufacture
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 effectively eliminates moire fringes, improves image definition, reduces glare, and ensures higher pixel filling coefficient, providing a softer and clearer display with reduced brightness, enhancing viewer comfort.
Implementation Method 1
A screen cover with arched structures and scattering parts is designed to cover LED pixel units, providing a filling coefficient of over 93% by blocking and diffusing light
Implementation Method 2
A top of each cover unit forms an arched structure extending away from the LED lamp, and the arched structures of adjacent cover units are configured and joined along the columns and rows
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
An LED display screen cover (2) includes a screen cover body including a plurality of cover units (21) disposed in an array of multiple rows and multiple columns, each cover unit (21) configured to be positioned on top of a respective LED lamp (11) of an array of LED pixel units of an LED screen (1). A top of each cover unit (21) forms an arched structure extending away from the LED pixel lamp (11), the arched structures of adjacent cover units configured and joined along the columns and rows such that, when placed over an illuminated LED screen (1), no perceptible light gaps are visible between adjacent screen pixels, as viewed through the screen cover body.