Display Panel Residue Trace Layout for Narrow Non-Display Borders
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in display device manufacturing is to minimize the width of the non-display area while improving process efficiency and yield, as there are limitations in reducing the size of the lines and circuits in the first non-display area and the cutting margin in the second non-display area.
Innovation Solution
A display device is designed with a residue trace on the display panel, where the outer boundary of the residue trace is adjacent to the edge portion of the display panel and closer to the center than the edge portion. This design includes a display panel with conductive and non-conductive layers, and a method of manufacturing that involves forming a coating layer, laser irradiation, and etching without a mask to minimize the non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the width of the non-display area is reduced to increase immersion and enhance aesthetics, then the display area efficiency is improved, but the manufacturing precision and process yield deteriorate due to limitations in reducing lines and circuits in the first non-display area and cutting margin in the second non-display area
Solution Approach 1:
The patent divides the non-display area into two distinct regions: a first non-display area containing lines and circuits for driving the display area, and a second non-display area serving as a cutting margin. This segmentation allows independent optimization of each region, enabling the cutting margin to be minimized while maintaining sufficient space for driving circuits, thus improving display area efficiency without compromising manufacturing precision
Solution Approach 2:
The patent applies preliminary action by forming a coating layer on the mother substrate before the cutting process. This coating layer facilitates the cutting operation and allows for reduced cutting margin while maintaining process yield. The preliminary coating enables precise cutting along the display cells with minimal waste area, directly addressing the contradiction between reducing non-display area width and maintaining manufacturing precision
2Productivity
If the cutting margin in the second non-display area is reduced to minimize non-display area width, then the display area efficiency is improved, but the process yield deteriorates due to insufficient margin for cutting process
Solution Approach 1:
The patent applies partial action by providing a cutting margin that is sufficient for the cutting process requirements but minimized to the extent possible. The second non-display area is designed with just enough width to accommodate the cutting process needs, avoiding excessive margin while ensuring process yield is maintained. This balanced approach optimizes display area efficiency without compromising reliability
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 solution effectively minimizes the width of the non-display area, enhances process efficiency, and improves process yield by optimizing the manufacturing process and design of the display device.
Implementation Method 1
forming a plurality of first laser irradiation areas by irradiating first laser to the mother substrate
Data Source
AI summary
A display device includes a display panel including a display area and a non-display area adjacent to a side of the display area, and a residue trace disposed on the display panel, and disposed on the display area and the non-display area, wherein an outer boundary of the residue trace is adjacent to an edge portion of the display panel, and disposed to be closer to a center portion of the display panel than the edge portion of the display panel.