Light-Emitting Element Layout for High-Density Substrate Mounting
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Solution Overview
Problem
Existing light-emitting apparatuses face challenges in mounting light-emitting elements at high density due to complex configurations and interference between drive and light-emitting elements, leading to difficulties in production and arrangement.
Innovation Solution
A light-emitting apparatus with a substrate featuring a drive element mounted on a first surface and a light-emitting element on a second surface, separated by an interlayer insulation layer, allowing for independent testing and repair of each component, and incorporating a black matrix and protection layer for efficient light emission and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the drive element and light-emitting element are mounted on the same surface of the substrate, then the mounting process is simplified, but the light-emitting elements cannot be arranged at high density due to interference between elements
Solution Approach 1:
The patent applies dimensionality change by mounting the drive element and light-emitting element on different surfaces (front and back) of the substrate, transforming a two-dimensional layout problem into a three-dimensional spatial arrangement. This allows both elements to coexist without lateral interference, enabling high-density arrangement of light-emitting elements while maintaining simplified mounting processes.
2Productivity
If the drive element and light-emitting element are mounted on different surfaces of the substrate, then high-density mounting is achieved, but the mounting process becomes complicated
Solution Approach 1:
By utilizing the third dimension (substrate thickness) to separate drive elements and light-emitting elements onto opposite surfaces, the patent achieves high-density mounting without increasing process complexity. The vertical separation eliminates the need for complex lateral routing and spacing, simplifying the overall mounting architecture.
Solution Approach 2:
The substrate is segmented into two functional surfaces: the front surface for mounting light-emitting elements and the back surface for mounting drive elements. This segmentation allows independent optimization of each mounting area, enabling high-density light-emitting element arrangement while maintaining simple, dedicated drive element mounting zones.
3Reliability
If the drive element size is increased to improve functionality, then the driving capability is enhanced, but the available mounting area for light-emitting elements is reduced
Solution Approach 1:
The patent resolves the area conflict by moving drive elements to the back surface of the substrate, allowing them to increase in size without encroaching on the front surface mounting area available for light-emitting elements. This vertical separation enables both large drive elements with enhanced functionality and high-density light-emitting element arrangements to coexist.
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 enables high-density mounting of light-emitting elements, allows for larger drive element sizes, and reduces malfunctions by preventing optical interference and enabling easier error detection and repair, while also optimizing the structure for improved image quality and material efficiency.
Implementation Method 1
a black matrix that is arranged on the side of the substrate front surface of the substrate and absorbs incident light
Data Source
AI summary
A light-emitting apparatus that has a structure that is highly productive and suitable for arranging light-emitting elements at a high density, and a method for producing the light-emitting apparatus, are provided. The light-emitting apparatus includes a substrate, a drive element, a light-emitting element, and an interlayer insulation layer. The substrate includes a front surface and a back surface. The drive element is mounted on a first mounting surface on a side of the front surface of the substrate. The light-emitting element is mounted on a second mounting surface on the side of the front surface of the substrate, the second mounting surface being situated at a distance from the substrate front surface; that is different from a distance of the first mounting surface from the substrate front surface. The interlayer insulation layer is made of an insulating material and formed between the drive element and the light-emitting element.