Mother Glass Non-Array Area Reduction for OLED Arrays
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Solution Overview
Problem
The existing organic electro luminescence display devices face challenges with large non-array areas on mother glass, which reduce productivity and increase manufacturing costs due to the need for separate inspecting equipment for different sizes and potential scratches on data and scan pads during the aging and lighting inspection processes.
Innovation Solution
A mother glass structure with a matrix arrangement of organic electro luminescence arrays, featuring reduced non-array areas with positive and negative shorting bars at the edges, connected by narrower lines and common lines to reduce the non-array area and allow for efficient voltage distribution, thereby improving productivity and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate inspecting equipment is used for different sizes of organic EL arrays, then inspection accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent implements a universal inspecting equipment design where the same equipment can inspect organic EL arrays of different sizes by adjusting the array selection unit. Instead of requiring separate equipment for each array size, the system uses a single multi-functional inspection platform that can handle various array configurations through software or configuration changes, thereby reducing manufacturing costs while maintaining inspection accuracy.
2Productivity
If the non-array area on mother glass is reduced, then productivity is improved, but the risk of scratches on data and scan pads increases
Solution Approach 1:
The patent segments the mother glass into distinct array areas and non-array areas with clear boundary definitions. By properly positioning and protecting the data and scan pads within the non-array area, the design allows minimization of the non-array area size while maintaining adequate protection zones for electrical contacts, thus improving productivity without compromising reliability.
3Area of stationary object
If narrower lines are used to connect shorting bars to arrays, then non-array area is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent optimizes the line width parameters within practical manufacturing ranges, selecting narrow but manufacturable dimensions for the connection lines between shorting bars and arrays. By carefully choosing parameters that balance minimal area occupation with manufacturing feasibility, the design reduces the non-array area while maintaining acceptable manufacturing precision standards.
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 reduces the non-array area on the mother glass, enhancing the design space for organic EL arrays, lowering manufacturing costs, and preventing scratches during inspections, while allowing for efficient aging and lighting processes without the need for new inspecting equipment for different sizes.
Implementation Method 1
If a voltage is applied between the first electrode 4 and the second electrode 12, then electrons produced from the second electrode 12 are moved, via the electron injection layer 10a and the electron carrier layer 10b, into the light-emitting layer 10c. Further, holes produced from the first electrode 4 are moved, via the hole injection layer 10e and the hole carrier layer 10d, into the light-emitting layer 10c. Thus, electrons and holes fed from the electron carrier layer 10b and the hole carrier layer 10d, respectively, are collided with each other at the light-emitting layer to be recombined to generate a light.
Data Source
AI summary
A mother glass is disclosed. The mother glass includes a plurality of organic electro luminescence arrays having a scan pad and a data pad. The plurality of organic electro luminescence arrays are arranged in a matrix type. The mother glass also includes: a non-array area, arranged between the organic electro luminescence arrays and an edge area located at an exterior of the arrangement of the matrix; at least one positive shorting bar formed at the edge area; at least one negative shorting bar formed at the edge area; a first line formed at the non-array area to electrically connect the data pad to the positive shorting bar; and a second line formed at the non-array area to electrically connect the scan pad to the negative shorting bar.