Side Line Conductive Particles for Narrow Bezel Displays
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Solution Overview
Problem
Multi-panel display devices face challenges in achieving a narrow bezel with excellent power efficiency and high reliability, as well as reducing heat generation due to increased power consumption and circuit integration, which affects image quality and mechanical properties.
Innovation Solution
The use of conductive particles with a particle size of 0.5 μm to 1 μm in the side lines of display devices, combined with a binder resin, to lower contact resistance and improve heat resistance, while also reducing the bezel area and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the luminance and circuit integration are increased to improve display performance, then the display quality is improved, but the power consumption increases and heat generation becomes significant
Solution Approach 1:
The patent changes the physical parameters of the side line by controlling the particle size of conductive particles to 0.5-1 μm and adjusting the weight ratio of conductive particles to binder resin (72-85:18-28). These parameter changes optimize electrical conductivity and reduce resistance, thereby reducing power consumption and heat generation while maintaining display performance
2Area of stationary object
If the driving circuits and link lines are disposed in the non-display area to reduce bezel size, then the effective display screen size is increased, but the contact resistance of side lines increases and heat generation occurs
Solution Approach 1:
The patent uses a composite material for the side line consisting of conductive particles (silver, copper, or aluminum with 0.5-1 μm particle size) combined with a binder resin. This composite structure provides both low contact resistance for reliable electrical connection and adequate mechanical strength, while enabling the compact side line design that reduces bezel area
Solution Approach 2:
The patent applies different material properties to different parts of the side line structure by using conductive particles for electrical conductivity and binder resin for mechanical binding. The conductive particles are specifically sized (0.5-1 μm) to optimize both electrical contact and mechanical properties in the localized side line region
3Ease of manufacture
If conventional side line materials are used to connect signal lines and link lines, then the manufacturing is simple, but the contact resistance is high and mechanical properties are poor
Solution Approach 1:
The patent changes the particle size parameter of conductive materials to 0.5-1 μm, which is larger than conventional fine particles, improving mechanical strength and contact reliability. The weight ratio of conductive particles to binder resin is optimized to 72-85:18-28, providing adequate conductivity while maintaining manufacturability through screen printing or similar conventional processes
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
This solution enhances the mechanical and thermal properties of the display devices, improves power efficiency, and increases reliability, resulting in better image quality and reduced heat generation.
Implementation Method 1
the plurality of side lines includes a conductive particle having a particle size of 0.5 μm to 1 μm
Implementation Method 2
solves a heat generation problem which is generated on a side line portion of the display device
Data Source
AI summary
A multi-panel display device includes a plurality of display devices disposed to be adjacent to each other, each of the plurality of display devices includes a first substrate including a display area and a non-display area enclosing the display area, a display unit including an organic light emitting diode disposed on an upper surface of the first substrate; a plurality of signal lines disposed on the upper surface of the first substrate and electrically connected to the display unit, a plurality of link lines disposed below the first substrate, a plurality of side lines disposed on a side surface of the first substrate and connects the plurality of signal lines and the plurality of link lines, and a protective layer covering the plurality of side lines and including a black material. The plurality of side lines includes a conductive particle having a particle size of 0.5 μm to 1 μm.