Floating Capacitors in Display Frame Region for Charge Management
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Solution Overview
Problem
The organic EL panel in existing technologies cannot prevent electric charge from flowing into the organic EL element via the substrate's surface without the wire electrode and lacks the ability to easily identify the location of charge flow, leading to degradation in image display quality.
Innovation Solution
A display device with a display region and a frame region containing a plurality of capacitors that are electrically floating, allowing for the capture and accumulation of electric charge that flows from the frame region into the display region, thereby preventing degradation and facilitating the identification of charge flow locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rounded ends are provided on wire electrodes to prevent charge concentration, then charge flow through wire electrodes is reduced, but charge flowing via substrate surface cannot be prevented and location identification becomes difficult
Solution Approach 1:
The invention divides the frame region into multiple segments by providing a plurality of floating capacitors at different locations. Each capacitor independently captures charge from its local area, enabling segmentation of the charge collection function. This allows identification of specific charge flow locations while collectively preventing charge from reaching the display region, thus resolving both the reliability and detectability issues.
Solution Approach 2:
The floating capacitors serve as intermediary elements between the frame region and the display region. Instead of allowing charge to flow directly to the display region or using wire electrodes that concentrate charge, the capacitors intercept and store the charge in intermediate positions. This mediator approach prevents charge from reaching critical areas while providing detectable charge accumulation points for location identification.
2Reliability
If wire electrodes are used to conduct electricity, then electrical connection is achieved, but charge concentration at electrode ends causes degradation in image quality
Solution Approach 1:
The invention extracts the charge accumulation function from the wire electrode structure and places it in separate floating capacitors located in the frame region. By taking out the charge handling function from the conductive path, the wire electrodes can perform their primary function of electrical connection without generating harmful charge concentration, thus improving image display quality.
Solution Approach 2:
Instead of trying to prevent charge generation entirely, the invention converts the harmful charge concentration effect into a useful function by providing floating capacitors that intentionally capture and store the charge. This transforms the charge that would otherwise degrade image quality into a controlled, localized phenomenon that can be managed and identified, turning a harmful effect into a beneficial diagnostic and protective mechanism.
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 solution effectively prevents electric charge from flowing into the display region, minimizing image quality degradation and allowing for precise identification of charge flow locations, thus enhancing the reliability and quality of the display device.
Implementation Method 1
a plurality of capacitors provided in a frame region located around the display region, and electrically floating
Data Source
AI summary
A display device includes the following: a display region with a plurality of pixels provided in matrix; and a plurality of capacitors provided in a frame region located around the display region, and electrically floating.