Curved Display Panel Gate Electrode Spacing Control
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Solution Overview
Problem
The manufacturing process of curved liquid crystal display panels faces challenges in controlling the space between the array and opposing substrates and the liquid crystal amount, which complicates achieving optimal display effects and reduces yield.
Innovation Solution
The display panel is designed with an array substrate and an opposing substrate, where the gate electrode is positioned opposite and spaced apart from the passivation layer at the channel region, allowing for optimal curving to decrease the space between them, and a protective layer is used to protect the gate electrode, enabling precise control of the curving degree to enhance display quality and yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the gate electrode is disposed close to the passivation layer to improve display effect, then the display quality is improved, but the manufacturing precision and yield are reduced due to difficulty in controlling the space between substrates
Solution Approach 1:
A protective layer is introduced as an intermediary element between the gate electrode and the passivation layer. This protective layer serves as a mediator that enables precise control of the spacing during curving while protecting the gate electrode, thus resolving the contradiction between achieving close proximity for display quality and maintaining manufacturing precision for yield.
Solution Approach 2:
The protective layer is formed on the gate electrode before the curving process. This preliminary action prepares the structure in advance, allowing the gate electrode to be positioned close to the passivation layer while the protective layer maintains the necessary spacing control and protection during subsequent manufacturing steps.
2Adaptability or versatility
If the curving degree is increased to improve panoramic image effect, then the viewing effect is improved, but the control over space between substrates and liquid crystal amount becomes more difficult
Solution Approach 1:
The protective layer acts as a mediator that decouples the curving degree from the spacing control. By introducing this intermediate element, the system can achieve greater curving degrees for improved panoramic viewing while the protective layer maintains precise control over the actual spacing between functional layers and liquid crystal amount.
Solution Approach 2:
The protective layer enables independent optimization of different parameters: the curving degree can be increased for better viewing effect, while the protective layer thickness and positioning maintain control over the effective spacing and liquid crystal amount, allowing parameter decoupling.
3Reliability
If the gate electrode is positioned close to the passivation layer, then the electric field control is improved, but the risk of short circuit and manufacturing complexity increases
Solution Approach 1:
The protective layer serves as an intermediary that enables close positioning of the gate electrode to the passivation layer for improved electric field control, while simultaneously preventing short circuits. This intermediate layer adds minimal manufacturing complexity compared to the benefits gained in reliability.
Data Source
AI summary
A display panel, a manufacturing method thereof and a display device are provided. The display panel includes an array substrate and an opposing substrate which are disposed opposite to each other; the array substrate includes a first base substrate and a source electrode, a drain electrode and an active layer which are disposed on the first base substrate, and a passivation layer disposed on the source electrode, the drain electrode and the active layer; the opposing substrate includes a second base substrate and a gate electrode disposed on the second base substrate; the active layer includes a source electrode region, a drain electrode region and a channel region between the source electrode region and the drain electrode region, the gate electrode is disposed opposite to and spaced apart from the passivation layer at a position where the channel region is located.