Display Panel Conductive Structure for Splicing Gap and Particle Control
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Solution Overview
Problem
Large-size display panels formed by splicing multiple display panels are prone to display defects due to splicing gaps and generation of conductive particles during cutting, which affect display quality.
Innovation Solution
The display panel design includes a conductive structure with a flush side surface and a shielding opposite substrate configuration to minimize splicing gaps and prevent conductive particle attachment, using existing masks for single-side gate driving circuits to reduce production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are spliced to form large-size display devices, then the display area is increased, but splicing gaps and conductive particles are generated affecting display quality
Solution Approach 1:
The patent converts the harmful conductive particles generated during cutting into a beneficial shielding structure. By intentionally leaving remaining portions of conductive structures (gate driving circuits) after cutting, these particles form a conductive structure that serves as an electrostatic shield between the array substrate and opposite substrate, preventing charge accumulation that would otherwise cause display defects.
Solution Approach 2:
The conductive structure acts as an intermediary shielding layer between the array substrate and opposite substrate. This intermediate conductive structure prevents direct interaction between the two substrates that would otherwise be facilitated by conductive particles, thereby eliminating display defects while maintaining the spliced large-size display configuration.
2Manufacturing precision
If cutting is performed to form individual display panels, then splicing gaps are reduced, but conductive particles are generated during the cutting process
Solution Approach 1:
The patent converts the harmful conductive particles generated during cutting into a beneficial shielding structure. By intentionally leaving remaining portions of conductive structures (gate driving circuits) after cutting, these particles form a conductive structure that serves as an electrostatic shield between the array substrate and opposite substrate, preventing charge accumulation that would otherwise cause display defects.
3Manufacturing precision
If new masks are designed for single-side gate driving circuits, then production costs increase, but manufacturing precision can be maintained
Solution Approach 1:
The patent makes the existing dual-side gate driving circuit masks universal for single-side gate driving circuit production. By designing the mask to accommodate both configurations, the same mask can be used whether the display panel requires single-side or dual-side gate driving circuits, thereby maintaining manufacturing precision while avoiding the need for additional mask designs and reducing production costs.
Data Source
AI summary
A display panel having an active area includes: an array substrate and an opposite substrate disposed opposite to the array substrate. The array substrate includes a first substrate and a conductive structure disposed on the first substrate. The conductive structure is located on a side of the active area. On a side of the conductive structure away from the active area, a side surface of the conductive structure is substantially flush with a side surface of the first substrate. On the side where the conductive structure is located, an edge of an orthographic projection of the opposite substrate on a plane where the array substrate is located is located outside an edge of the array substrate.