Emissive Display Metal Plate Reinforcement for Folding Control
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Solution Overview
Problem
Flexible display devices face challenges in maintaining structural integrity during bending and folding due to the rigidity of conventional glass substrates, leading to potential breakage.
Innovation Solution
Incorporating a metal plate with a spacer attached to its rear surface, featuring specific structural elements like mesh patterns and alignment marks, to maintain the display panel's folded state and prevent excessive deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a glass substrate is used for the display panel, then the structural integrity and rigidity are improved, but the flexibility and ability to bend or deform are worsened
Solution Approach 1:
The patent replaces the rigid glass substrate with a flexible substrate made of plastic or polymer material. This flexible substrate can be bent, folded, or deformed while maintaining structural integrity, enabling the display device to achieve bendable, foldable, or rollable configurations without the fragility associated with glass substrates.
2Adaptability or versatility
If the display panel is made flexible using plastic substrate, then the ease of deformation and flexibility are improved, but the structural stability and resistance to excessive bending are worsened
Solution Approach 1:
The patent introduces a metal plate with through-holes positioned at the rear surface of the display panel. This metal plate acts as a structural reinforcement element that segments the flexible substrate, providing anchor points that maintain structural stability during bending and folding operations, preventing the flexible substrate from deforming excessively.
Solution Approach 2:
The patent creates a composite structure by combining the flexible plastic substrate with a rigid metal plate. This composite construction integrates the flexibility of the plastic material with the structural stability of the metal reinforcement, achieving both ease of deformation and structural integrity simultaneously.
3Stability of the object's composition
If a metal plate is added to the rear surface of the display panel, then the structural stability during bending is improved, but the device complexity and number of components are worsened
Solution Approach 1:
The metal plate serves multiple functions simultaneously: it reinforces the flexible substrate to maintain structural stability during bending, provides attachment points for spacers through its through-holes, and can be integrated with the alignment mark structure. This multi-functionality reduces the need for separate reinforcement components, thereby limiting the increase in device complexity.
Data Source
AI summary
An emissive display device includes: a display panel including a plurality of pixels and an alignment mark positioned on a rear surface thereof; a metal plate disposed on the rear surface of the display panel, where an alignment mark opening corresponding to the alignment mark is defined through the metal plate, and the metal plate includes a step portion positioned close to the alignment mark opening; and a spacer disposed to overlap at least a portion of the step portion in a plan view and attached to a rear surface of the metal plate.