Display Pixel Electrode Layout With Fewer Mask Steps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing manufacturing processes for display devices are complex and require multiple masks, making them inefficient and costly.
Innovation Solution
A simplified manufacturing process for display devices is developed, which uses fewer masks by stabilizing light emitting elements with contact electrodes and insulating patterns, allowing for the omission of separate fixing components and utilizing insulating patterns as etching masks to connect pixel circuit portions with display elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing manufacturing processes are used, then light emitting elements can be manufactured, but the process is complex and requires multiple masks
Solution Approach 1:
The patent merges the function of separate fixing components with the contact electrodes and insulating patterns. The insulating patterns serve dual purposes: as structural support layers and as etching masks during manufacturing, eliminating the need for separate fixing components and reducing the total number of masks required in the manufacturing process.
Solution Approach 2:
The insulating patterns are designed to perform multiple functions: they provide structural support for the light emitting elements, serve as electrical insulation layers, and act as etching masks during the manufacturing process. This multi-functionality reduces the number of separate components and masks needed, simplifying the overall manufacturing process.
2Reliability
If separate fixing components are used, then light emitting elements can be stabilized, but the manufacturing process becomes more complex
Solution Approach 1:
The patent combines the fixation function with the contact electrodes and insulating patterns. The insulating patterns are positioned to physically support and stabilize the light emitting elements while maintaining electrical insulation, eliminating the need for separate fixing components and reducing device complexity.
3Manufacturing precision
If multiple masks are used, then precise patterning can be achieved, but manufacturing efficiency decreases
Solution Approach 1:
The insulating patterns serve as multi-functional elements that provide both structural support and act as etching masks. By using the same insulating patterns for multiple purposes, the patent reduces the number of separate masking steps required, thereby improving manufacturing efficiency while maintaining patterning accuracy through the precise positioning of these multi-functional patterns.
Data Source
AI summary
A display device includes: a substrate having a display area and a non-display area; and a pixel in each of a pixel area in the display area. Each of the pixels includes: an insulating layer on the substrate and having an opening; first and second electrodes on the insulating layer and spaced apart from each other; a plurality of light emitting elements in the opening; a first contact electrode electrically connecting one end of the light emitting elements and the first electrode to each other; a second contact electrode electrically connecting another end of the light emitting elements and the second electrode to each other; a first insulating pattern on the first contact electrode; and a second insulating pattern on the second contact electrode. The first insulating pattern and the second insulating pattern are on the same layer and spaced apart from each other.