Flexible Display Glue Gap Sealing Moisture Infiltration
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Solution Overview
Problem
Flexible displays are prone to moisture infiltration due to air strips formed between the top protective sheet, driving substrate, and circuit board, which can damage the circuits and devices.
Innovation Solution
A display device design that includes a glue filled gap between the circuit board and the front protective layer, with the glue overlapping the projections of both the circuit board and the protective layer on the driving substrate, preventing ambient moisture from entering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the circuit board is jointed at the front face of the flexible display, then the board area becomes stepped, but air strips are formed between the top protective sheet, driving substrate, and circuit board allowing moisture infiltration
Solution Approach 1:
The patent introduces a filling material as an intermediary substance between the circuit board and front protective layer to occupy the gap space. This filling material prevents moisture from infiltrating through the gap while maintaining the stepped structural arrangement, thus resolving the contradiction between structural shape and moisture resistance.
2Strength
If the top protective sheet is attached on the front face of the flexible display, then protection is provided, but air strips form between components allowing moisture to enter
Solution Approach 1:
The patent extracts and addresses the gap issue separately from the protective sheet attachment. By introducing a filling material specifically into the gap region between the circuit board and front protective layer, the solution removes the harmful air strip formation while preserving the protective sheet's protective function.
3Volume of moving object
If the circuit board and front protective layer are positioned close together, then structural compactness is improved, but gaps remain that allow moisture infiltration
Solution Approach 1:
The filling material serves as an intermediary substance that fills the residual gap space between the circuit board and front protective layer. This allows the structure to maintain compactness while the filling material prevents moisture infiltration through the remaining gap, resolving the contradiction between compactness and moisture protection.
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 moisture from entering the gap between the circuit board and the front protective layer, enhancing the reliability of the display device by ensuring the circuits and devices remain dry.
Implementation Method 1
The glue is filled in the first gap... preventing ambient moisture from entering
Implementation Method 2
A display device including a glue disposed between a circuit board and a front protective layer
Data Source
AI summary
A display device includes a driving substrate, a front panel laminate, a circuit board, a front protective layer, and a glue. The front panel laminate is disposed on the driving substrate and includes a display medium layer. The circuit board is disposed on an end of the driving substrate. The front protective layer is disposed on the front panel laminate. The front protective layer has a notch. An end of the circuit board is in the notch. The end of the circuit board and the front protective layer have a first gap therebetween. The glue is filled in the first gap. A normal projection of the glue on the driving substrate overlaps a normal projection of the circuit board on the driving substrate and overlaps a normal projection of the front protective layer on the driving substrate.