Light-Shading Structure for Uniform LED Display
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Solution Overview
Problem
Existing image display modules using LEDs face challenges in achieving uniformity and contrast due to irregular light-emitting region arrangements and varying light intensities, which affect the quality of the displayed images.
Innovation Solution
An image display module with a light-emitting group and a light-shading structure, where light-emitting chips are arranged irregularly on a circuit substrate, and a light-shading unit with through openings is formed to create exposed and shading portions, allowing for regular arrangement of exposed portions and uniform light intensity through precise sizing and positioning of through openings based on measured brightness signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light-emitting chips are arranged irregularly on the circuit substrate, then the design flexibility and adaptability are improved, but the uniformity and contrast of the displayed image deteriorate
Solution Approach 1:
The light-emitting region of each light-emitting chip is segmented into an exposed portion and a shading portion. The exposed portion allows light to pass through while the shading portion blocks light, creating distinct functional zones that enable regular pattern formation even with irregular chip arrangements
Solution Approach 2:
Different portions of the light-emitting region are assigned different properties: the exposed portion has light-transmitting properties while the shading portion has light-blocking properties. This local differentiation allows each chip to contribute uniformly to the overall regular pattern despite irregular positioning
2Adaptability or versatility
If the light-emitting regions are arranged irregularly, then the adaptability to different display configurations is improved, but the contrast and uniformity of the displayed image deteriorate
Solution Approach 1:
The light-emitting region is divided into exposed and shading portions, where the exposed portion controls light output intensity. By adjusting the size and shape of exposed portions, uniform light intensity can be achieved across irregularly arranged chips
Solution Approach 2:
The size, shape, and position of the exposed portion are adjusted as parameters to compensate for irregular chip arrangements. By changing these parameters, the light intensity from each chip can be optimized to achieve uniform overall illumination and high contrast
3Manufacturing precision
If through openings are used to expose light-emitting regions, then the uniformity and regular pattern are improved, but the device complexity increases
Solution Approach 1:
The light-shading structure combines multiple functions: it provides through openings for light exposure, creates shading portions to block light, and forms the regular visible pattern. This merging of functions reduces the need for separate components and simplifies the overall device structure
Solution Approach 2:
The light-shading structure serves multiple purposes simultaneously: it defines the exposed portions, creates the shading portions, establishes the regular pattern, and compensates for irregular chip arrangements. This multi-functionality reduces device complexity while achieving the desired pattern regularity
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 ensures uniformity and increased contrast of the displayed images by aligning the exposed portions of light-emitting regions in a regular pattern, despite irregular chip arrangements, thereby enhancing the overall image quality.
Implementation Method 1
a light-shading unit partially contacting and covering each light-emitting chip... the shading portion of the light-emitting region of each light-emitting chip is contacted and covered by the light-shading unit
Data Source
AI summary
The present disclosure provides an image display module and a method of manufacturing the same, and a display device. The image display module includes a circuit substrate, a light-emitting group and a light-shading structure. The light-emitting group includes a plurality of light-emitting chips for generating a predetermined image. Each light-emitting chip has a light-emitting region, and the light-emitting region has an exposed portion and a shading portion. The light-shading structure includes a light-shading unit and a plurality of through openings passing through the light-shading unit. The exposed portion of the light-emitting region of each light-emitting chip is exposed by the through opening. The shading portion of the light-emitting region of each light-emitting chip is contacted and covered by the light-shading unit. The exposed portions of the light-emitting regions can be arranged regularly in a predetermined shape due to the through openings that are arranged in a regular arrangement.