3D Printed Display Panel Black Matrix Grid Structure
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Solution Overview
Problem
Conventional 3D printing display panels result in inconsistent resin curing due to their configuration, leading to pits in the final product and failing to meet user demands for quality.
Innovation Solution
A display panel with a black matrix structure on a second substrate, where first and second portions are alternately arranged to form a grid, ensuring the minimum width difference between them is ≤2 μm, improving light coverage and curing consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional display panel is used as a photomask with liquid crystal molecules controlling ultraviolet light transmission, then the light can be controlled to cure resin in specific patterns, but the configuration causes failed dark spaces outside light spots where resin is insufficiently cured, resulting in pits on the final 3D printed product
Solution Approach 1:
The black matrix is segmented into multiple first portions and multiple second portions that are alternately arranged in a grid structure. This segmentation allows different regions of the black matrix to serve different functions: first portions provide light blocking while second portions allow light transmission, creating a patterned illumination effect that ensures uniform resin curing across the entire build area without failed dark spaces
Solution Approach 2:
Different portions of the black matrix are assigned different optical properties: first portions are configured to block light while second portions are configured to transmit light. This local differentiation of optical quality within the black matrix structure enables precise control of light distribution, ensuring that resin receives adequate curing light in all required areas while preventing over-curing in other areas, thereby eliminating pits in the final product
2Shape
If the black matrix portions are arranged with significant width difference, then the grid structure can be clearly defined, but the light coverage becomes uneven causing inconsistent resin curing and pits in the printed product
Solution Approach 1:
The widths of the first portions and second portions are carefully controlled within specific parameter ranges, with the width difference maintained at ≤2 μm. This parameter optimization ensures that the grid structure is clearly defined for proper light pattern control, while simultaneously maintaining uniform light distribution across the resin surface, achieving both structural definition and curing consistency
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 ensures consistent resin curing across the 3D printed product, reducing pits and enhancing the overall quality and user experience by maintaining lightproof areas and aperture zones in alignment with pixel units.
Implementation Method 1
the multiple first portions, the multiple second portions and the multiple third portions form lightproof areas of the black matrix
Implementation Method 2
the ultraviolet light is controlled to pass through the display panel and enter the resin to cure the resin
Data Source
AI summary
A 3D printed display panel includes two opposing substrates and a black matrix formed on one of the substrates. The light proof areas of the black matrix include multiple first portions, multiple second portions and multiple third portions arranged to form a grid structure. The first portions and the third portions are alternately arranged in a direction of the scanning lines, the second portions and the third portions are alternately arranged in a direction of the data lines. Meshes of the grid structure are aperture zones of the black matrix. The aperture zones are in one-to-one correspondence with the pixel units. A vertical projections of the scanning lines and the data lines on the second substrate are located in the lightproof areas; where a minimum width of one first portion is X, a minimum width of one second portion is Y, and |X−Y|≤2 μm.