Display Substrate Barrier for Cover Layer Leakage
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Solution Overview
Problem
In the manufacturing of display substrates, the formation of concaves between lead wires leads to leakage of the solution used for the cover layer, resulting in poor coverage and efficiency during the spraying process.
Innovation Solution
Incorporating a barrier between the lead wires and the cover layer, which is formed at least at the concaves between the lead wires to block the solution from leaking, thereby improving the coverage effect of the cover layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lead wires are separated to form concaves between them, then electrical insulation is improved, but solution leakage occurs during cover layer formation
Solution Approach 1:
A barrier layer is introduced as an intermediary component between the lead wires and the cover layer. This barrier layer fills the concaves formed between adjacent lead wires and prevents the cover layer solution from leaking into these spaces during the coating process, thereby resolving the contradiction between maintaining electrical insulation and preventing solution leakage.
2Object-generated harmful factors
If barrier is added to block concaves, then solution leakage is reduced, but device complexity increases
Solution Approach 1:
The barrier layer serves multiple functions simultaneously: it blocks solution leakage into concaves, provides additional electrical insulation between lead wires, and maintains structural integrity of the lead wire array. By combining multiple functions into a single component, the solution avoids increasing device complexity while effectively preventing solution leakage.
3Manufacturing precision
If barrier material is sprayed to cover lead wires, then coverage is improved, but solution leaks into concaves reducing efficiency
Solution Approach 1:
The barrier layer is formed in advance before the cover layer is applied. By pre-filling the concaves between lead wires with barrier material, the subsequent cover layer spraying process is prevented from leaking into these spaces, ensuring uniform coverage and eliminating the need for rework or additional material, thereby maintaining manufacturing efficiency.
Data Source
AI summary
A display substrate, a method of manufacturing the same, a display panel, and a display apparatus are provided. In one embodiment, a display substrate includes: a base substrate; a plurality of lead wires and a barrier on the base substrate, the plurality of lead wires being separated from one another to form a concave between every two adjacent ones of the plurality of lead wires; and a cover layer covering over the plurality of lead wires and the barrier; wherein the plurality of lead wires are insulated from the barrier, the plurality of lead wires are insulated from the cover layer, the plurality of lead wires are between the base substrate and the cover layer, the barrier is between the plurality of lead wires and the cover layer, and the barrier is formed at least at the concave between at least two of the plurality of lead wires to block the concave.