Light Emitting Element Exterior Angle Control for Surface Defect Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light emitting elements face challenges in manufacturing processes that result in surface defects, leading to reduced luminous efficiency and display quality due to inadequate control over the exterior angles of the element active layer.
Innovation Solution
The light emitting element is designed with a specific configuration where the exterior angle of the side surface of the element active layer is within the range of 55° to 75°, or more specifically 60° to 73°, to efficiently remove surface defects during manufacturing, improving luminous efficiency and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the element active layer is formed with conventional manufacturing processes, then the manufacturing process is simple, but surface defects are generated leading to reduced luminous efficiency
Solution Approach 1:
The patent applies parameter changes by precisely controlling the exterior angle of the element active layer within a specific range (55° to 75°, preferably 60° to 73°). This angular parameter control enables effective removal of surface defects while maintaining manufacturing feasibility, thereby improving luminous efficiency without excessive complexity increase
2Reliability
If the exterior angle of the element active layer is not controlled within the specific range, then the manufacturing process is easier, but surface defects remain leading to poor display quality
Solution Approach 1:
The patent establishes a specific parameter range for the exterior angle (55° to 75°, with optimal range of 60° to 73°) that balances manufacturing feasibility with display quality requirements. This parameter optimization ensures surface defects are effectively removed while maintaining acceptable manufacturing precision
Solution Approach 2:
The patent implements feedback control by specifying precise exterior angle ranges that provide measurable criteria for quality assessment. This feedback mechanism allows manufacturers to adjust processes to achieve the target angular range, ensuring consistent display quality and reliability
Data Source
AI summary
A light emitting element includes a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an element active layer between the first semiconductor layer and the second semiconductor layer. The first semiconductor layer, the element active layer, and the second semiconductor layer are sequentially located along a first direction. A thickness of the first semiconductor layer in the first direction is greater than a thickness of the second semiconductor layer in the first direction. A cross section of the element active layer taken along the first direction includes a first side facing the first semiconductor layer, a second side facing the second semiconductor layer, a first lateral side connecting one end of the first side to one end of the second side, and a second lateral side connecting an other end of the first side to an other end of the second side.