Reflective Trench Pixel Circuit Layout for Light Alignment Reliability
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Solution Overview
Problem
Current display devices face challenges in ensuring the reliability of pixel circuit performance, particularly due to issues with light emission and electrical signal alignment, which can affect the accuracy and longevity of the display.
Innovation Solution
The proposed display device incorporates a trench structure with a reflective surface that is non-parallel to the plane, positioned between the transistor and the light-emitting element, and includes a pixel circuit with a specific layer configuration to enhance light path control and reduce interference from rear surface light, thereby improving the alignment and reliability of the light-emitting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a trench structure with reflective surface is added between the transistor and light-emitting element, then light interference with the pixel circuit is reduced and reliability is improved, but device complexity increases
Solution Approach 1:
A trench structure filled with reflective material is introduced as an intermediary element between the pixel circuit and light-emitting element. This reflective trench acts as a mediator to redirect light paths, preventing light from directly interfering with the pixel circuit while maintaining the functional relationship between components.
Solution Approach 2:
The pixel-circuit layer is segmented into multiple functional regions including the pixel circuit area, the reflective trench structure, and the light-emitting element area. This segmentation allows each component to be optimized independently for its specific function while reducing mutual interference through spatial separation.
2Measurement precision
If the reflective surface is oriented non-parallel to the plane, then light path control is improved and alignment accuracy is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The reflective surface is designed with an asymmetric orientation that is non-parallel to the base layer plane. This asymmetric configuration creates specific light reflection angles that improve light path control and alignment accuracy, distinguishing it from conventional symmetric parallel structures.
Solution Approach 2:
The orientation angle of the reflective surface is optimized to specific parameter values that balance light alignment performance with manufacturing feasibility. By carefully selecting the inclination angle and orientation of the trench structure, the design achieves improved light control while keeping manufacturing requirements within reasonable limits.
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 effectively reduces the risk of light interference with the pixel circuit, enhancing the reliability and performance of the display by improving light alignment and reducing potential damage to electrical signals, leading to improved display accuracy and longevity.
Implementation Method 1
a trench structure adjacent to the active layer and having reflexibility
Data Source
AI summary
According to one or more embodiments of the disclosure, a display device comprises a pixel-circuit layer above a base layer and comprising a pixel circuit comprising a transistor comprising an active layer and a trench structure adjacent to the active layer and having reflexibility, and a light-emitting element on the pixel-circuit layer.