OLED Display Panel Anode Layer on Signal Trace in Non-Display Area
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Solution Overview
Problem
In flexible OLED display panels, the etching solution can mis-etch the exposed signal trace during the formation of the anode, affecting the encapsulation effect.
Innovation Solution
The OLED display panel design includes a signal trace layer with grooves in the non-display area, where the anode material layer covers the exposed portions of the signal trace, preventing etching solution contact and ensuring proper encapsulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the organic film layer is excavated to form blocks in the non-display area, then the block structure is formed, but the signal trace is exposed and susceptible to mis-etching
Solution Approach 1:
The patent applies preliminary action by forming a protective layer over the signal trace before the etching process. This protective layer is prepared in advance to prevent the etching solution from contacting and mis-etching the signal trace during subsequent processing steps.
Solution Approach 2:
The patent uses an intermediary substance (protective layer) that mediates between the etching solution and the signal trace. This protective layer acts as a barrier that allows the etching process to proceed while preventing harmful contact with the signal trace.
2Ease of manufacture
If the etching solution contacts the exposed signal trace, then the anode is formed, but the signal trace is mis-etched and encapsulation is affected
Solution Approach 1:
The protective layer serves as an intermediary that allows the etching solution to perform its function of forming the anode while preventing it from mis-etching the signal trace. This mediator enables the manufacturing process to proceed with the required precision.
Solution Approach 2:
The patent applies local quality by providing differential protection: the protective layer is selectively positioned to cover the signal trace while allowing the etching process to proceed in other areas where the anode needs to be formed. This localized approach maintains manufacturing precision without compromising overall ease of manufacture.
3Shape
If the signal trace is exposed in the block area, then the block structure is complete, but the encapsulation effect is compromised
Solution Approach 1:
The protective layer is formed in advance over the signal trace in the block area to ensure that subsequent processing and encapsulation steps do not compromise the signal trace integrity, thereby maintaining the encapsulation effect while completing the block structure.
Data Source
AI summary
The present disclosure provides an organic light-emitting diode (OLED) display panel comprising a display area, a non-display, and a block area provided in the non-display area. The OLED display panel includes a signal trace layer, an organic film layer, and an anode layer which are sequentially located on the signal trace layer. The signal trace layer is provided with a signal trace in the non-display area. When an anode is formed on the anode layer, an anode material layer at least covering the exposed signal trace is formed in the corresponding block area, so as prevent mis-etching of the signal trace caused by the etching solution.