Display Substrate Static Electricity Breakup Circuit Design
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Solution Overview
Problem
Static electricity during the manufacturing and driving processes of liquid crystal display (LCD) panels can damage signal lines and thin-film transistors, leading to decreased manufacturing yield and product quality.
Innovation Solution
A display substrate with a static electricity breakup circuit is designed, featuring fan-out lines connected to signal lines and static electricity prevention circuits, including diodes and capacitors, which are commonly connected to a breakup line through a common contact, reducing the circuit area and preventing static electricity damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static electricity prevention circuits are individually connected to each fan-out line, then static electricity protection is provided, but the circuit area increases
Solution Approach 1:
Multiple static electricity prevention circuits that are respectively connected to different fan-out lines are merged and commonly connected to a single breakup line through a common contact. This consolidation reduces the overall circuit area while maintaining static electricity protection functionality for all fan-out lines.
Solution Approach 2:
The breakup line serves as a universal connection path for multiple static electricity prevention circuits, allowing a single structural element to handle static electricity dissipation for multiple fan-out lines simultaneously, thereby reducing redundant circuit area.
2Manufacturing precision
If circuit area is reduced for high-resolution display, then pixel distance is narrowed, but static electricity protection becomes more difficult to implement
Solution Approach 1:
By merging multiple static electricity prevention circuits into a compact configuration with a common connection to the breakup line, the patent achieves space-efficient protection that accommodates narrow pixel distances required for high-resolution displays.
Solution Approach 2:
The patent arranges static electricity prevention circuits and their connections in a compact, space-efficient layout that optimizes the use of available area, enabling effective static electricity protection even in the reduced space available in high-resolution displays with narrow pixel distances.
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
The solution effectively dissipates static electricity, protecting the display substrate's components and enabling the production of high-resolution displays with narrow pixel distances by minimizing the static electricity prevention circuit area.
Implementation Method 1
a static electricity breakup circuit comprising a breakup line that crosses the fan-out lines, and static electricity prevention circuits respectively connected to the fan-out lines, wherein the static electricity prevention circuits are commonly connected to the breakup line through a common contact
Data Source
AI summary
A display substrate includes a base substrate including a display area in which signal lines and pixels are arranged and a peripheral area surrounding the display area, pads disposed in the peripheral area and receiving an electrical signal, fan-out lines connecting the pads and the signal lines, and static electricity breakup circuits comprising a breakup line that crosses the fan-out lines, and static electricity prevention circuits respectively connected to the fan-out lines. Parts of the static electricity prevention circuits are connected to adjacent fan-out lines and are commonly connected to the one of the breakup lines through a common contact part.