Virtual Driving Units for Rounded Display Panel Etching
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Solution Overview
Problem
The design of electronic display panels with rounded angle regions leads to etching non-uniformity, causing electrostatic damage, film breakage, and encapsulation failures due to the reduced number of gate driving units per unit area, resulting in uneven encapsulation and decreased reliability.
Innovation Solution
Incorporating virtual driving units similar to gate driving units within the rounded angle regions to maintain design uniformity and improve etching consistency, with these units being insulated from gate lines and signal lines, thereby filling gaps and enhancing electrostatic discharge paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the display panel uses rounded angle regions to improve screen occupancy ratio and aesthetic appearance, then the screen design flexibility and visual appeal are improved, but etching uniformity deteriorates leading to electrostatic damage, film breakage, and encapsulation failures
Solution Approach 1:
The patent applies local quality by introducing virtual driving units specifically in the rounded angle regions where etching uniformity deteriorates. These virtual units are not needed for functional operation but provide local structural compensation to maintain consistent etching conditions and encapsulation quality in the problematic rounded corners, while leaving the functional gate driving units unchanged in their optimal positions.
2Area of stationary object
If gate driving units are arranged to maximize display area, then screen occupancy ratio is improved, but the number of gate driving units per unit area in rounded regions decreases causing etching non-uniformity
Solution Approach 1:
The patent uses copying by creating virtual driving units that replicate the structural characteristics of functional gate driving units. These virtual copies are placed in rounded angle regions to mimic the etching and encapsulation patterns of normal driving units, ensuring uniform processing conditions without adding actual functional units that would reduce the display area.
3Reliability
If virtual driving units are added to rounded angle regions, then etching uniformity and encapsulation reliability are improved, but device complexity increases
Solution Approach 1:
The patent applies this principle by using virtual driving units that are structurally simple and do not require complex interconnections or functional components. These units are essentially simplified structures that provide the necessary etching and encapsulation geometry without requiring long-term functional operation, making them cost-effective and low-complexity additions to the display panel.
Data Source
AI summary
The present disclosure provides a display panel including: gate lines; data lines insulated from and intersecting with gate lines; pixel units; first and second clock signal lines; first and second power signal lines; gate driving units; and virtual driving units. Each gate driving unit has an output terminal electrically connected to gate lines, a first clock signal input terminal electrically connected to first clock signal line, and a second clock signal input terminal electrically connected to second clock signal line. Each virtual driving unit has an output terminal insulated from gate lines, a first clock signal input terminal insulated from first and second clock signal lines, and a second clock signal input terminal insulated from first and second clock signal lines. At least one virtual driving unit is disposed within the rounded angle region and located between two gate driving units.