Display Panel Edge Structure with Convex Surfaces for Strength
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Solution Overview
Problem
Display panels face challenges in enhancing the strength of their edge portions, which are prone to fragility and defects due to the design and manufacturing processes, particularly when the outer edge of the sealing portion is concave apart from the substrates, leading to potential cracks and reduced yield.
Innovation Solution
The display panel design incorporates a sealing portion between two substrates with edge surfaces that form convex and inclined surfaces, including straight-lined and shaped edges, where the sealing portion's edge is aligned with the substrates' edges to create a continuous, polished surface, enhancing the structural integrity of the edges through specific cutting and polishing techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sealing portion is positioned concave apart from the substrates, then the manufacturing process is simplified, but the edge strength and structural integrity deteriorate
Solution Approach 1:
The patent applies preliminary action by forming inclined surfaces on the substrates and sealing portion before final assembly. These pre-formed inclined surfaces ensure that when the components are bonded, they automatically create a flush, coplanar edge surface that enhances strength without complicating the manufacturing process.
Solution Approach 2:
The patent changes the geometric parameters of the edge surfaces by introducing inclined surfaces with specific angles. This parameter modification allows the sealing portion to be positioned concave apart from the substrates while still achieving flush edges, thereby maintaining both manufacturing simplicity and edge strength.
2Strength
If the sealing portion edge is aligned with substrate edges to form convex surfaces, then edge strength is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent segments the edge structure into three distinct components: the first substrate with its inclined surface, the sealing portion with its inclined surface, and the second substrate with its inclined surface. This segmentation allows each component to be manufactured and processed independently, then assembled to form the strengthened edge structure.
Solution Approach 2:
The patent transitions from a two-dimensional edge alignment problem to a three-dimensional solution by introducing inclined surfaces. The inclined surfaces add a dimensional aspect that allows the sealing portion to be positioned concave apart while still achieving coplanar edges, thereby enhancing strength without excessive complexity.
3Stability of the object's composition
If cutting and polishing techniques are applied to form coplanar edges, then structural integrity is improved, but manufacturing time and cost increase
Solution Approach 1:
The patent applies preliminary action by pre-forming the inclined surfaces during the cutting stage, before the polishing stage. This preliminary formation of the correct geometry reduces the amount of material that needs to be removed during polishing, thereby reducing manufacturing time while still achieving the coplanar edge structure.
Solution Approach 2:
The patent merges the cutting and polishing operations into a more integrated process. By designing the inclined surfaces to be formed during cutting, the patent combines the structural formation and surface preparation steps, reducing the total manufacturing time while maintaining structural integrity.
Data Source
AI summary
A display panel includes: first and second substrates, each including a display area and a peripheral area in a plan view; and a sealing portion disposed between the first and second substrates. An edge of the display panel includes straight-lined and shaped edges, and the shaped edge includes a curved portion. An edge surface of the first substrate at the straight-lined edge, an edge surface of the second substrate at the straight-lined edge and an edge surface of the sealing portion at the straight-lined edge collectively define a first convex surface, an edge surface of the first substrate at the shaped edge, an edge surface of the second substrate at the shaped edge and an edge surface of the sealing portion at the shaped edge collectively define a second convex surface, and shapes of the first and second convex surfaces are different from each other.