Display Panel Shielding Structure for Encapsulation Overflow Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The overflow of organic material from the encapsulation layer into the non-display area of display devices during the formation process, which compromises the reliability due to moisture and oxygen permeation, is a challenge.
Innovation Solution
A display device design incorporating a shielding portion with specific configurations, including dams and protruding portions, to prevent organic material overflow by managing the flow of organic material during the encapsulation layer formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an encapsulation layer is formed to prevent moisture and oxygen permeation, then the reliability of the display device is improved, but organic material overflows into the non-display area during the formation process
Solution Approach 1:
The patent introduces a shielding portion that divides the non-display area into multiple regions. This segmentation prevents organic material from continuously flowing across the entire non-display area by creating intermediate barriers, thus improving manufacturing precision while maintaining the encapsulation layer's protective function
Solution Approach 2:
The shielding portion acts as an intermediary structure between the encapsulation layer and the non-display area. It mediates the organic material flow by providing a controlled path that prevents direct overflow into sensitive non-display regions, resolving the contradiction between forming the encapsulation layer and controlling material flow
2Stability of the object's composition
If the encapsulation layer is formed to cover the light emitting element, then the integrity of the encapsulation layer is improved, but organic material overflows into the non-display area
Solution Approach 1:
The shielding portion segments the non-display area to create discrete zones that prevent organic material from compromising the overall encapsulation layer integrity. By dividing the potential overflow path into separate regions, the encapsulation layer maintains its compositional stability while preventing harmful organic material infiltration
Solution Approach 2:
The shielding portion extracts or removes the potential harmful effect by physically separating the organic material flow path from the non-display area. This extraction prevents the organic material from reaching sensitive regions, thereby maintaining encapsulation layer integrity without allowing overflow into prohibited areas
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
Effectively prevents organic material from overflowing into the non-display area, enhancing the reliability of the display device by maintaining the integrity of the encapsulation layer.
Implementation Method 1
capable of preventing an organic material for an organic layer from overflowing into a non-display area through a capillary phenomenon
Data Source
AI summary
A display device includes a display panel and a gate driving circuit. The display panel includes a base layer including a display area and a non-display area, driving lines disposed on the base layer, connected to the gate driving circuit, and extending in a first direction, an upper insulating layer disposed on the base layer, a first dam disposed on the upper insulating layer and overlapping the non-display area, a second dam spaced farther apart from the display area than the first dam, and a shielding portion disposed between the first and second dams. The shielding portion includes a first portion overlapping at least one of the driving lines and extending in a second direction, and second-first and second-second portions that are respectively protruded from one end and the other end of the first portion in the first direction and that do not overlap the driving lines.