Inorganic LED Display Module Layout for Contrast Without Viewing Loss
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Solution Overview
Problem
Display modules with inorganic light emitting elements face reduced luminance and degraded viewing angles due to the presence of light blocking members, which also affect the representation of black gradation and overall display quality.
Innovation Solution
A light blocking member is strategically formed on the upper side of the connecting member, positioned on the xy plane to cover areas around the inorganic light emitting elements, preventing light leakage without invading their emissive areas and maintaining the viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light blocking member is disposed between color filters to prevent light mixture, then the contrast ratio is improved, but the viewing angle is reduced and display quality is degraded when viewed from the side
Solution Approach 1:
The light blocking member is repositioned from a horizontal placement between color filters to a vertical placement on the connecting member. This dimensional change allows the light blocking function to be achieved without interfering with the lateral light emission path, thus maintaining wide viewing angles while improving contrast ratio.
Solution Approach 2:
The light blocking member is placed on the connecting member which serves as an intermediary structure between the inorganic light emitting element and the color filter. This positioning allows the light blocking function to be achieved without directly blocking the light emission path to the viewer, thus maintaining viewing angle while improving contrast.
2Measurement precision
If a light blocking member is disposed between color filters, then the contrast ratio is improved, but the display quality is degraded due to interference with light emission
Solution Approach 1:
By moving the light blocking member to a vertical position on the connecting member, the design separates the light blocking function from the light emission path. This allows high contrast ratio to be achieved without compromising the illumination intensity and overall display quality.
3Ease of manufacture
If the connecting member has a nonuniform rough surface, then the manufacturing process is simplified, but diffused reflection occurs and display quality is degraded
Solution Approach 1:
The light blocking member acts as an intermediary that covers the nonuniform rough surface of the connecting member. This allows the connecting member to maintain its simple manufacturing process with nonuniform surface, while the light blocking member prevents diffused reflection from degrading display quality.
4Ease of manufacture
If the connecting member has nonuniform color, then material selection is easier, but the performance of displaying black gradation is degraded
Solution Approach 1:
The light blocking member serves as an intermediary layer that covers the connecting member with nonuniform color. This allows flexible material selection for the connecting member while the light blocking member ensures uniform appearance and proper black gradation performance.
Solution Approach 2:
The light blocking member is selectively positioned on the connecting member to cover areas where color nonuniformity would affect display quality. This allows the connecting member to use easily manufacturable materials while the light blocking member provides local correction for black gradation performance.
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 enhances the contrast ratio and enables better representation of darker black gradations without compromising the viewing angle, thereby improving display quality.
Implementation Method 1
a light blocking member 340 which is spaced apart from the substrate 310 and disposed on the connecting member 320
Data Source
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AI summary
Disclosed is a display module that includes a substrate including a plurality of interconnection wires, a connecting member comprising a conductive material disposed on one side of the substrate, a plurality of inorganic light emitting elements comprising light emitting circuitry arranged on the connecting member, and a light blocking member comprising an opaque material disposed on a region other than regions where the plurality of inorganic light emitting elements are disposed. A portion of each of the plurality of inorganic light emitting elements is disposed to pass through a portion of the connecting member and is spaced apart from the substrate. The connecting member electrically connects each of the plurality of inorganic light emitting elements with at least one interconnection wire among the plurality of interconnection wires. The light blocking member is spaced apart from the substrate and disposed on the connecting member.