Micro LED Display Device Non-Overlapping RGB Arrangement
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Solution Overview
Problem
In displays using micro light emitting diodes (micro LEDs), the overlapping of LEDs of different colors can lead to deterioration in display properties due to their array structure and observation direction, affecting the quality of the displayed image.
Innovation Solution
A display device is designed with a substrate having pixels that include first, second, and third light emitting elements configured to output red, green, and blue light respectively, arranged in a specific intersecting pattern on the substrate to prevent overlap when viewed from different directions, ensuring optimal light output and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LEDs of different colors are arrayed in a conventional pattern on the substrate, then the device complexity is reduced and manufacturing is simplified, but the display property deteriorates due to overlapping of LEDs when viewed from certain directions
Solution Approach 1:
The patent introduces a third dimension (depth/vertical arrangement) to the LED array structure. By arranging LEDs of different colors at different depths and using transparent substrates, the invention resolves the overlapping problem that occurs in conventional two-dimensional arrays when viewed from oblique angles, thereby improving display property without significantly increasing manufacturing complexity
2Manufacturing precision
If LEDs are arranged in a dense array to improve resolution, then the area utilization is improved, but overlapping of light emitting elements occurs when viewed from angled directions, causing display quality to deteriorate
Solution Approach 1:
The patent applies local quality by making the substrate transparent in specific regions where LEDs are arranged, allowing light from LEDs at different depths to be viewed simultaneously from oblique angles. This localized transparency approach enables dense LED arrays to maintain high resolution while preventing display quality deterioration from overlapping
Solution Approach 2:
By transitioning from a two-dimensional planar array to a three-dimensional stacked arrangement with transparent substrates, the invention allows LEDs to be densely packed while maintaining visibility of all color elements from various viewing angles, thus preserving both resolution and display quality
3Ease of manufacture
If a conventional LED array structure is used to simplify manufacturing, then the ease of manufacture is improved, but light output from certain LEDs is blocked by other LEDs, causing display property to deteriorate
Solution Approach 1:
The patent implements local quality by selectively making portions of the substrate transparent where needed to allow light transmission from specific LEDs. This approach maintains relatively simple manufacturing processes while ensuring that light output from all LEDs is visible, thereby improving display property without significantly complicating the manufacturing process
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 arrangement prevents light output from certain LEDs from being blocked by others, maintaining image quality and preventing display property deterioration even when viewed from angles, thereby enhancing the overall display performance.
Implementation Method 1
A plurality of LEDs are mounted on a flat surface of an array substrate (or a driver backplane in JP-T-2017-529557). The LEDs are arrayed and output light in different colors (e.g., RGB).
Data Source
AI summary
A display device comprises: a substrate; a plurality of pixels provided to the substrate; and a plurality of light emitting elements provided to the respective pixels. The light emitting elements include a plurality of first light emitting elements, a plurality of second light emitting elements, and a plurality of third light emitting elements, the first light emitting elements are arrayed on the substrate in a first direction and a second direction, the third light emitting element has a part not overlapping the first light emitting element or the second light emitting element when one of the pixels is viewed in the first direction, and the third light emitting element has a part not overlapping the first light emitting element or the second light emitting element when one of the pixels is viewed in the second direction.