Resin Layer Bending Protection for Display Devices
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Solution Overview
Problem
Display devices face durability issues due to the risk of breakage when repeatedly bent or coupled with other components, particularly with driving circuit units mounted directly on the display panel.
Innovation Solution
A display device design featuring a resin layer with a bending portion that covers the bending protection layer, a cover film, and a driving circuit unit, where the resin layer includes a base portion with metal particles and has a thickness and electrical conductivity suitable for enhanced durability and protection against external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If driving circuit units are directly mounted on the display panel to achieve thin, small, and lightweight design, then device miniaturization is improved, but the risk of breakage and cracking increases when repeatedly bent or coupled
Solution Approach 1:
A resin layer is applied in advance to the bending portion of the display panel before mounting the driving circuit unit. This resin layer acts as a cushioning protection that prevents breakage and cracking of the driving circuit unit when the display device is repeatedly bent or coupled, while still maintaining a thin overall structure.
Solution Approach 2:
The resin layer serves as an intermediary protective element between the display panel and the driving circuit unit. It mediates the mechanical stress during bending, preventing direct contact between the fragile driving circuit unit and the bending forces, thus improving reliability without significantly increasing device thickness.
2Reliability
If a resin layer is added to protect the bending portion and driving circuit unit, then durability is improved, but device complexity increases
Solution Approach 1:
The protective resin layer is implemented as a thin film structure that conforms to the bending portion of the display panel. This thin film approach provides durable protection against breakage while adding minimal structural complexity compared to rigid protective structures.
Solution Approach 2:
The resin layer may be formulated as a composite material containing metal particles (such as copper or aluminum) dispersed within the resin matrix. This composite structure enhances both the protective properties and electrical conductivity of the resin layer, achieving improved durability without proportionally increasing structural complexity.
3Reliability
If the resin layer thickness is increased to enhance protection, then durability against external impacts is improved, but the overall device size increases
Solution Approach 1:
The optimal thickness of the resin layer is determined by adjusting material parameters rather than simply increasing thickness. By selecting resin materials with appropriate mechanical properties and adding metal particles to enhance strength and conductivity, the patent achieves effective protection against external impacts while maintaining a thin overall structure.
Solution Approach 2:
The resin layer is formulated as a composite material with metal particles (copper or aluminum) dispersed throughout. This composite structure provides enhanced mechanical strength and electrical conductivity, allowing for effective protection against external impacts and static electricity with minimal thickness increase.
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
The resin layer provides improved durability and protection against breakage, ensuring the display device remains functional and resistant to external stress and static electricity, while maintaining a suitable thickness and conductivity for effective shielding.
Implementation Method 1
an electrical conductivity of the resin layer may be about 100 Siemens per square centimeter (S/cm2) or greater
Implementation Method 2
the resin layer may include a base portion, and metal particles dispersed inside the base portion, wherein the metal particles may include at least one of copper (Cu) or aluminium (Al)
Implementation Method 3
A display device may be provided in a bent form or a form in which the display panel is coupled in a bent state with other components
Implementation Method 4
a bending portion disposed between the first flat portion and the second flat portion and having a predetermined radius of curvature
Implementation Method 5
the resin layer may include at least one of an acrylic resin, an epoxy-based resin, a silicon-based resin, a pyrrole-based resin, a furan-based resin, a thiophene-based resin, an aniline-based resin, or poly(3,4-ethylenedioxythiophene (PEDOT)
Data Source
AI summary
A display device includes: a display module including a first flat portion, a second flat portion facing the first flat portion, and a bending portion disposed between the first flat portion and the second flat portion and having a predetermined radius of curvature; a driving circuit unit disposed on the second flat portion; a bending protection layer disposed on the bending portion, and not overlapping the first flat portion and the second flat portion; a cover film disposed on the second flat portion, and covering the driving circuit unit; and a resin layer including a first resin flat portion disposed on at least a portion of the first flat portion, a second resin flat portion disposed on the second flat portion and covering the cover film, and a resin bending portion disposed on the bending portion and covering the bending protection layer.