Stretchable Display Circuit Layout for Etch-Protected Line Patterns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face issues with damage to connection lines and reduced stretching reliability due to etching processes, which also limit the implementation of high-resolution displays.
Innovation Solution
A display device design with a stretchable lower substrate divided into areas, featuring a pattern layer with plate and line patterns, a first metal layer, a circuit element layer, and a connection line, where the metal layer is in an electrically floating state to protect the line pattern during etching, and a planarization layer is minimized or excluded to enhance stretching reliability and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal layer is disposed on the line pattern during etching, then the line pattern is protected from damage, but the metal layer may be damaged or detached during the etching process
Solution Approach 1:
The patent applies preliminary action by forming the metal layer on the line pattern before performing the etching process. This preliminary positioning allows the metal layer to serve as a protective barrier during subsequent etching operations, preventing direct exposure and damage to the line pattern while maintaining the metal layer's structural integrity through proper sequence of operations
2Measurement precision
If the plate pattern area is reduced to improve resolution, then display resolution is improved, but the manufacturing process becomes more difficult
Solution Approach 1:
The patent applies segmentation by dividing the display area into multiple smaller pixel regions, each with its own plate pattern and light-emitting element. This segmentation approach enables high resolution through increased pixel density while managing manufacturing complexity through modular, repeatable fabrication processes for each pixel unit
Solution Approach 2:
The patent utilizes vertical stacking by positioning the metal layer above the line pattern in a three-dimensional structure. This dimensional transition from two-dimensional planar arrangement to three-dimensional layered configuration allows for compact pixel designs and high-resolution displays while maintaining manufacturability through standard semiconductor fabrication techniques
Data Source
AI summary
Provided are a display device and a method of manufacturing a display device. The display device includes a stretchable lower substrate divided into a first area, and a second area different from the first area; a pattern layer disposed on the lower substrate and including a plate pattern disposed in the first area, and a line pattern disposed in the second area; a first metal layer disposed on the plate pattern and the line pattern; a circuit element layer disposed on the plate pattern and the first metal layer and including at least one transistor; a light-emitting element disposed on the circuit element layer; and a connection line disposed on the line pattern and connected to the circuit element layer. Therefore, the stretching reliability of the display device may be improved.