Gate Driving Circuit Isolation in Display Panels
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Solution Overview
Problem
Conventional gate driving circuits in display devices face issues with overwhelming RC load and damage due to exposure to air or poor protection, primarily caused by the interaction with liquid crystal molecules.
Innovation Solution
The implementation of a display panel design that includes a first substrate with an active switch array and a gate driving circuit in the peripheral area, paired with secondary spacing columns and a sealing section on a second substrate, forming a circuit disposition space that isolates the gate driving circuit from liquid crystal molecules, reducing RC load and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the gate driving circuit is integrated on the glass substrate and covered by liquid crystal molecules, then the space and costs are saved, but the RC load becomes overwhelming
Solution Approach 1:
The display panel is divided into two separate substrates: the first substrate contains the gate driving circuit in the peripheral area, while the second substrate contains the active switch array in the active area. This segmentation physically separates the gate driving circuit from the liquid crystal molecules, reducing the RC load while maintaining integration benefits.
Solution Approach 2:
The gate driving circuit is extracted from the active area and placed in the peripheral area of the first substrate. This extraction removes the circuit from direct contact with liquid crystal molecules, thereby reducing the capacitive load and improving reliability while preserving the GOA technology's space-saving advantages.
2Ease of manufacture
If the gate driving circuit is exposed to air or has poor protection, then the manufacturing process is simplified, but the circuit will be damaged
Solution Approach 1:
The gate driving circuit is nested within a protective sealing structure formed by the sealing section and secondary spacing columns. The sealing section creates a protected cavity that encloses the circuit, providing mechanical protection and isolation from environmental factors while maintaining manufacturing simplicity.
Solution Approach 2:
The sealing section acts as a protective shell that encloses the gate driving circuit. This sealing structure provides robust protection against environmental damage while being compatible with the manufacturing process, ensuring both ease of manufacture and circuit reliability.
3Area of stationary object
If the secondary spacing columns are placed close to the gate driving circuit, then the device structure is compact, but the circuit may be scratched or damaged
Solution Approach 1:
The secondary spacing columns are positioned asymmetrically relative to the gate driving circuit, with specific spacing designed to prevent contact. This asymmetric arrangement optimizes the use of space while ensuring the circuit remains protected from mechanical damage by the spacing columns.
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 design effectively reduces the RC load and protects the gate driving circuit by isolating it within a vacuum environment, minimizing capacitance and preventing physical contact with secondary spacing columns, thereby enhancing the reliability and performance of the display device.
Implementation Method 1
the gate driving circuit is in a vacuum and a load capacitance thereof is C=ε0*A/d, where ε0 is a vacuum dielectric coefficient
Data Source
AI summary
A display panel and a display device are provided. The display panel includes: a first substrate, a second substrate, an active switch array, at least one gate driving circuit, at least one group of secondary spacing columns and a sealing section; the first substrate includes an active area and a peripheral area; the second substrate is opposite to the first substrate; the active switch array is located in the active area; the gate driving circuit is located in the peripheral area and connected to the active switch array; the secondary spacing columns are disposed on the second substrate and opposite to the peripheral area; the sealing section is disposed between the first substrate and the second substrate and located in the peripheral area. The sealing section, the first substrate, the second substrate and the secondary spacing columns together form a circuit disposition space.