Thyristor Light-Emitting Component With Openings
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Solution Overview
Problem
Current light-emitting components for image forming apparatuses face challenges in efficiently driving light-emitting elements and enhancing light emission, particularly in the design and configuration of light-emitting diodes and thyristors within the printheads of these systems.
Innovation Solution
A light-emitting component is developed comprising a substrate with plural light-emitting diodes and thyristors stacked on top, where the thyristors are strategically positioned to drive the light-emitting diodes and include openings to minimize light loss, allowing for improved light emission directionality and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If thyristors are stacked on light-emitting elements to drive and control light emission, then light emission control capability is improved, but light absorption by thyristors increases causing light loss
Solution Approach 1:
The thyristor structure is segmented by introducing openings in the light-emitting element layer, dividing the thyristor into multiple regions (first thyristor region and second thyristor region) that can be independently optimized for different functions: driving control and light transmission
Solution Approach 2:
Different regions of the thyristor are given different properties: the first thyristor region maintains full thyristor structure for effective driving control, while the second thyristor region has openings to reduce light absorption and allow light transmission, achieving local optimization of both control capability and light efficiency
2Productivity
If thyristors are stacked on light-emitting elements for efficient driving, then light emission efficiency is improved, but light path obstruction increases
Solution Approach 1:
The thyristor is divided into multiple regions with the light-emitting element layer segmented into first and second light-emitting element layers, allowing the light path to pass through openings in specific regions while maintaining driving control in other regions
Solution Approach 2:
The openings in the light-emitting element layer and thyristor layer act as intermediaries that allow light to pass through the stacked structure, mediating between the need for stacked configuration (for efficient driving) and the need for unobstructed light path
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 light emission efficiency by effectively driving the light-emitting diodes and reducing light absorption by the thyristors, leading to improved image formation capabilities in image forming apparatuses.
Implementation Method 1
plural light-emitting elements are disposed on the substrate and emit light in a direction perpendicular to a front surface of the substrate
Implementation Method 2
The plural thyristors are respectively stacked on the plural light-emitting elements and turn on to drive the light-emitting elements to emit light or to increase an emitted light amount
Data Source
AI summary
A light-emitting component includes a substrate, plural light-emitting elements, and plural thyristors. The plural light-emitting elements are disposed on the substrate and emit light in a direction perpendicular to a front surface of the substrate. The plural thyristors are respectively stacked on the plural light-emitting elements and turn on to drive the light-emitting elements to emit light or to increase an emitted light amount. Each of the thyristors includes an opening in a path of light from the corresponding light-emitting element to the thyristor.