Screen-Printed Cover Panel Formation for Thin Display Modules
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Solution Overview
Problem
Conventional display modules with multiple functional layers for heat dissipation, light blocking, and impact protection result in increased thickness and complexity in manufacturing, potentially causing cracks in the display panel.
Innovation Solution
A method involving screen printing a coating solution on the rear surface of a display panel, followed by semi-curing at a controlled temperature to form a preliminary cover panel, and then pressing it at a similar temperature to create a single-layer cover panel directly on the display panel, optimizing heat dissipation and reducing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple functional layers are used for heat dissipation, light blocking, and impact protection, then the reliability and functionality of the display module is improved, but the thickness and device complexity increase
Solution Approach 1:
The patent merges multiple functional layers (heat dissipation layer, light blocking layer, impact protection layer) into a single integrated cover panel. This cover panel is formed by applying a coating solution containing heat dissipation particles, light-blocking particles, and binding agents directly onto the display panel, then curing to form a unified structure that provides all required functions without increasing thickness.
Solution Approach 2:
The patent uses composite materials by formulating a coating solution with multiple types of particles (heat dissipation particles, light-blocking particles) and binding agents in specific ratios. The coating solution is applied and cured to create a composite cover panel that integrates diverse functional materials into a single layer, achieving both functionality and thinness.
2Reliability
If multiple functional layers are added to improve heat dissipation and protection, then the reliability is improved, but the manufacturing complexity and risk of cracks increase
Solution Approach 1:
The patent combines multiple manufacturing steps (heat dissipation layer formation, light blocking layer formation, impact protection layer formation) into a single coating and curing process. The coating solution is applied once and then cured to form all functional layers simultaneously, reducing manufacturing complexity and eliminating the risks associated with multiple separate layers.
Solution Approach 2:
The patent performs preliminary actions by preparing the coating solution with all necessary components (heat dissipation particles, light-blocking particles, binding agents) in advance, then applying it in a single step. This preliminary preparation allows all functional layers to be formed simultaneously in one curing process, simplifying manufacturing.
3Reliability
If a thick multi-layer structure is used for protection and heat dissipation, then the reliability is improved, but the manufacturing precision and risk of cracks decrease
Solution Approach 1:
The patent merges multiple protective functions into a single cover panel formed by coating and curing. This unified structure eliminates the interfaces between multiple layers where cracks typically occur, improving manufacturing precision and panel integrity while maintaining reliability through the integrated design.
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 method enhances heat dissipation and reduces thickness while maintaining panel integrity, simplifying the manufacturing process and improving the reliability of the display module.
Implementation Method 1
semi-curing the coating solution at a first temperature to form a preliminary cover panel
Implementation Method 2
pressing the preliminary cover panel at a second temperature to form a cover panel
Implementation Method 3
A portion of the solvent of the coating solution may be evaporated during the forming of the preliminary cover panel
Implementation Method 4
applying a coating solution to a rear surface of a display panel using a screen printing process
Data Source
AI summary
A manufacturing method of a display module includes applying a coating solution to a rear surface of a display panel using a screen printing process, semi-curing the coating solution at a first temperature to form a preliminary cover panel, and pressing the preliminary cover panel at a second temperature to form a cover panel. A number of pores in the preliminary cover panel may be greater than a number of pores in the cover panel.