Bendable Display Transmission Lines With Fewer Manufacturing Masks
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Solution Overview
Problem
Existing display apparatus manufacturing processes require multiple masks, which complicates the production of display apparatuses with bent portions, increasing costs and reducing efficiency.
Innovation Solution
A display apparatus design that reduces the number of masks used by incorporating specific layers and connections, including a first area, bending area, and second area, with insulating and connection electrodes, and transmission lines, allowing for efficient manufacturing of bent displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple masks are used in the manufacturing process, then manufacturing precision can be maintained, but device complexity and production cost increase
Solution Approach 1:
The patent merges multiple mask patterns into a single mask by designing a unified pattern that forms both the first transmission line (on the first insulating layer) and the second transmission line (on the second organic insulating layer) simultaneously. This is achieved through a combined mask pattern that defines conductive material deposition areas for both transmission lines in one masking step, thereby reducing the total number of masks required while maintaining manufacturing precision.
Solution Approach 2:
The single mask serves multiple functions by simultaneously defining the patterns for both the first transmission line and the second transmission line. The mask pattern is designed to create conductive material regions that will form both transmission lines after sequential deposition processes, making the mask a multi-functional tool that replaces what would traditionally require separate masks for each line.
2Manufacturing precision
If multiple masks are used in the manufacturing process, then pattern accuracy can be ensured, but productivity decreases
Solution Approach 1:
The patent combines multiple patterning steps into a single mask application step. The unified mask pattern enables simultaneous formation of both transmission lines through sequential material deposition, reducing the number of masking operations from multiple steps to one step, thereby improving productivity while preserving pattern accuracy through precise single-step mask design.
Solution Approach 2:
The mask pattern is designed in advance to pre-defin e the positions and shapes of both transmission lines. This preliminary design of the combined mask pattern allows subsequent deposition processes to automatically form both lines with accurate patterns, eliminating the need for multiple sequential masking operations and improving manufacturing efficiency.
3Manufacturing precision
If multiple masks are used in the manufacturing process, then line quality can be maintained, but manufacturing cost increases
Solution Approach 1:
The patent merges the functions of multiple masks into a single mask structure. By designing a unified mask pattern that defines both transmission lines simultaneously, the manufacturing process requires only one mask, thereby reducing material costs, simplifying the manufacturing procedure, and maintaining line quality through precise single-step pattern transfer.
Solution Approach 2:
The patent extracts and eliminates the redundant masking steps from the manufacturing process. By identifying that a single combined mask can accomplish what multiple separate masks would do, the invention removes unnecessary masking operations, reducing manufacturing complexity and cost while preserving the quality of the transmitted lines.
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 proposed design minimizes the number of masks required, simplifying the manufacturing process and reducing costs while enabling the production of flexible and bendable displays.
Implementation Method 1
organic insulating layers and inorganic insulating layers, where the organic layers are used as photoresist to etch the inorganic layers
Data Source
AI summary
A display apparatus includes a peripheral area including a first area, a bending area, and a second area, a display area, a first insulating layer located in the display area and at least a portion of the peripheral area, a gate electrode located in the display area, a first connection electrode located in the display area, a first organic insulating layer arranged in the display area and the peripheral area, a second organic insulating layer located in the display area and the peripheral area, and an input line including a first transmission line located in the first area, and a second transmission line located in the bending area.