Display Panel Functional Layer for Uniform Laser Sintering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The packaging performance of glass adhesives in display panels is compromised due to non-uniform energy distribution during laser sintering, leading to inadequate melting at the edges and excessive heating at the center, resulting in reduced mechanical strength and bonding efficiency.
Innovation Solution
A functional layer is arranged on the cover plate corresponding to the glass adhesive, reducing the intensity of the laser beam across the adhesive's central and edge regions, ensuring a uniform heat distribution and preventing over-sintering, thereby improving bonding and mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a laser beam is used to sinter the glass adhesive, then the bonding efficiency is improved, but the packaging performance is reduced due to non-uniform energy distribution
Solution Approach 1:
The patent applies local quality by creating different thickness regions in the functional layer: a first region with greater thickness corresponding to the central region of the glass adhesive, and a second region with lesser thickness corresponding to the edge region. This non-uniform thickness distribution compensates for the non-uniform laser energy distribution, ensuring uniform heating across the glass adhesive area.
2Device complexity
If the laser spot is focused into a circular shape, then the sintering process is simplified, but the heat distribution becomes non-uniform with excessive energy at the center
Solution Approach 1:
The patent introduces a functional layer as an intermediary between the laser beam and the glass adhesive. This functional layer acts as a mediator that redistributes the laser energy by absorbing or scattering photons, converting the non-uniform circular laser spot into a more uniform heat distribution pattern across the glass adhesive.
3Area of stationary object
If the glass adhesive width is made slightly less than the laser spot diameter, then the adhesive is fully covered, but the central region receives excessive energy causing over-sintering
Solution Approach 1:
The patent applies local quality by creating different thickness regions in the functional layer: a first region with greater thickness corresponding to the central region of the glass adhesive, and a second region with lesser thickness corresponding to the edge region. This non-uniform thickness distribution compensates for the non-uniform laser energy distribution, ensuring uniform heating across the glass adhesive area.
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 functional layer ensures uniform heating and bonding of the glass adhesive, enhancing the packaging performance and mechanical robustness of the display panel by reducing the intensity difference between the central and edge regions, thus preventing over-sintering and improving the overall packaging effect.
Implementation Method 1
a functional layer is arranged on the cover plate at a position corresponding to the glass adhesive, and configured to reduce an intensity of a laser beam irradiated on the glass adhesive during a sintering process
Implementation Method 2
the glass adhesive is sintered by using a laser for outputting a laser beam focused into a circular spot
Implementation Method 3
the glass adhesive is sintered by using a laser for outputting a laser beam focused into a circular spot
Implementation Method 4
the glass adhesive at the edge region cannot effectively melt for bonding
Data Source
AI summary
The present disclosure relates to a display panel, a display device and a method for packaging a display panel. The display panel includes a substrate and a cover plate, wherein the substrate includes a display region and a packaging region located at a periphery of the display region, a glass adhesive is arranged between the substrate and the cover plate at a position corresponding to the packaging region, and a functional layer is arranged on the cover plate at a position corresponding to the glass adhesive, for reducing an intensity of laser irradiated on the glass adhesive during the sintering.