Display Panel Mask Plate Patterning Cost Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing number of films in liquid crystal and organic light-emitting displays requires a greater number of expensive mask plates, leading to higher costs in the preparation and mass production of these displays.
Innovation Solution
A method for preparing a display panel that uses a single mask plate to pattern both the first insulation layer and the passivation layer, forming via holes that allow for electrical connections between films, thereby reducing the need for multiple mask plates and lowering production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple mask plates are used for patterning each film in liquid crystal or organic light-emitting displays, then the display functions can be diversified and multiple films can be prepared, but the costs for purchasing mask plates and preparing the display increase significantly
Solution Approach 1:
The patent merges the patterning process for the first insulation layer and passivation layer into a single step using one mask plate. The mask plate simultaneously patterns both layers to form first via holes and second via holes respectively, reducing the number of mask plates from multiple to one, thereby lowering preparation costs while maintaining the ability to create diversified display functions through multiple films
Solution Approach 2:
The single mask plate serves multiple functions by being used to pattern both the first insulation layer and the passivation layer. This universal application of the mask plate eliminates the need for separate mask plates for each layer, reducing manufacturing costs while still enabling the creation of multiple functional films in the display structure
2Manufacturing precision
If multiple mask plates are used for patterning processes on different films, then accurate electrical connections can be achieved, but the device complexity and preparation costs increase
Solution Approach 1:
The patent combines the patterning operations for different insulation layers into a single mask plate design. The mask plate includes patterned regions that correspond to both the first via hole pattern in the first insulation layer and the second via hole pattern in the passivation layer, maintaining precise electrical connections while reducing device complexity by eliminating multiple mask plates
Data Source
AI summary
Disclosed are a display panel, a preparation method thereof and a display device. The display panel includes a display region and a non-display region. The preparation method includes: providing a base substrate; preparing a first metal layer on a side of the base substrate; preparing a first insulation layer on a side of the first metal layer; performing a patterning process on the first insulation layer by using a mask plate to form a plurality of first via holes; preparing a passivation layer on a side of the first insulation layer; performing the patterning process on the passivation layer by using the same mask plate to form a plurality of second via holes, where a vertical projection of each of the first via holes on a plane where the base substrate is located covers a vertical projection of one of the second via holes on the plane.