Rescue Circuit Line Structure for Display Devices
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Solution Overview
Problem
Conventional circuit line structures on display devices often have discontinuous patterns, making it inconvenient to use photo masks for defining circuit patterns, especially when breaks occur in scan or data lines, leading to poor display quality due to signal disruption.
Innovation Solution
A rescue circuit line structure with a first and second conductive pattern separated by a dielectric layer, allowing for optional electrical interconnection between circuit elements, and a method for manufacturing this structure by forming conductive patterns with open sections that can be connected via a melting process to restore signal flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a photo mask is used to define circuit patterns step by step, then manufacturing precision can be maintained, but the process becomes inconvenient and time-consuming when the circuit pattern requires open sections for rescue lines
Solution Approach 1:
The circuit pattern is divided into multiple conductive patterns (first conductive pattern, second conductive pattern, etc.) separated by open sections. Each conductive pattern can be independently formed and positioned, allowing flexible configuration of rescue lines without requiring complex photo mask adjustments. This segmentation enables the rescue line to connect breaks in scan or data lines while maintaining manufacturing efficiency.
2Reliability
If a rescue line is designed to connect breaks in scan or data lines, then reliability is improved, but the circuit pattern becomes discontinuous making photo mask definition difficult
Solution Approach 1:
The open section acts as an intermediary element that allows the rescue line to connect different conductive patterns. By positioning the open section at specific locations, the rescue line can bridge breaks in scan or data lines without requiring the entire circuit pattern to be continuous. This intermediary approach maintains reliability while simplifying the overall circuit pattern design.
3Adaptability or versatility
If the circuit pattern is made discontinuous with open sections for rescue lines, then flexibility in routing is improved, but manufacturing precision and pattern definition become more difficult
Solution Approach 1:
The open sections are pre-positioned at predetermined locations during the manufacturing process. This preliminary action allows the rescue line to be formed with precise positioning without requiring complex real-time adjustments. The open sections are created using standard lithography processes, maintaining manufacturing precision while enabling flexible routing configurations.
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
Enables swift manufacturing of discontinuous circuit lines, allowing for flexible routing around breaks and maintaining or restoring electrical connections, thereby improving display quality and simplifying the manufacturing process by using a dielectric layer to facilitate electrical connections between conductive patterns.
Implementation Method 1
a dielectric layer disposed between the first conductive pattern and the second conductive pattern
Implementation Method 2
a method for manufacturing the same by forming conductive patterns with open sections that can be connected via a melting process to restore signal flow
Data Source
AI summary
A display device includes a rescue circuit line structure having a first conductive pattern, a second conductive pattern and a dielectric layer. The first conductive pattern is adapted to electrically interconnect a first circuit element and a second circuit element, wherein the first conductive pattern has an open. Neither of the first and second conductive patterns is used as a data line or a scan line. The dielectric layer is located on the open and disposed between the first conductive pattern and the second conductive pattern.