Liquid Crystal Display Panel Cutting Guide Slots
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Solution Overview
Problem
The existing cutting technology for notch screens in liquid crystal display panels causes cracks due to the inability to effectively concentrate laser energy, leading to edge collapses and breakage during the cutting process.
Innovation Solution
The solution involves forming cutting guide slots on the transparent bases of the substrates, which are less than the thickness of the base, to guide the laser cutting and prevent strong laser energy from being required, thereby reducing the risk of cracks and improving cutting yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a laser cutting machine is used to cut the polarizers and the liquid crystal display panel simultaneously, then the cutting process can be completed in one step, but the laser energy cannot be effectively concentrated and cracks occur on the transparent base
Solution Approach 1:
The patent divides the cutting process into two separate stages: first forming cutting guide slots on the transparent base, then performing the actual cutting. This segmentation allows the laser energy to be concentrated effectively during the cutting phase without being diffused by the polarizers, while still maintaining process integration benefits.
Solution Approach 2:
The cutting guide slots are formed in advance on the transparent base before the final cutting operation. This preliminary action creates a prepared path that guides the subsequent cutting process, enabling effective laser energy concentration and preventing cracks during the actual cutting of polarizers and panel.
2Productivity
If strong laser energy is used to cut through the polarizers and liquid crystal display panel, then the cutting can be completed, but cracks occur on the transparent base causing edge collapses and breakage
Solution Approach 1:
Cutting guide slots are formed in advance on the transparent base to create a predetermined cutting path. This preliminary structure allows the subsequent cutting to proceed along the guide slots with reduced laser energy, preventing the need for strong laser energy that would cause cracks and maintain structural integrity.
Solution Approach 2:
The cutting guide slots act as an intermediary structure between the laser cutting process and the transparent base. These pre-formed slots provide a controlled path that mediates the interaction between laser energy and the base material, enabling cutting without the harmful concentration of excessive laser energy that would cause cracks.
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 formation of cutting guide slots allows for precise cutting without strong laser energy, preventing cracks and enhancing the cutting process efficiency, thus addressing the issue of crack occurrence in notch screens.
Implementation Method 1
a laser cutting machine is used to perform a notch shaped cut on liquid crystal display panels and polarizers simultaneously
Implementation Method 2
polarizers cause laser energy to be diffused, effective concentration of laser energy cannot be ensured
Data Source
AI summary
A liquid crystal display panel and a manufacturing method of a display module are provided. Cutting guide slots are formed on a transparent base of the liquid crystal display panel, and depths of the cutting guide slots are less than a thickness of the transparent base, which does not affect normal attachment of polarizers, so that after the polarizers are attached on the liquid crystal display panel, due to a presence of the cutting guide slots, strong laser energy is not required to realize cutting of the liquid crystal display panel, which improves cutting yield.