Display Device Protection Structure Dissipating Static Electricity
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Solution Overview
Problem
Static electricity generated during the manufacturing of display devices, such as LCD and OLED, frequently damages peripheral circuits, leading to reliability issues and line defects in the display devices.
Innovation Solution
Incorporating a protection structure, typically made of transparent conductive materials or metals, electrically connected to the second electrode, which covers and protects the peripheral circuits, including gate drivers and data drivers, to dissipate static electricity effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peripheral circuits are disposed in a peripheral circuit region of a glass substrate in the display device, then the display device can function properly with gate drivers and data drivers, but the peripheral circuits may be easily damaged by static electricity generated during manufacturing processes
Solution Approach 1:
The patent applies the 'Blessing in disguise' principle by introducing a protection structure that converts the harmful static electricity into a beneficial protective mechanism. The protection structure, made of conductive material and electrically connected to the second electrode, actively dissipates static charges that accumulate during manufacturing processes. This transforms the potential harm of static electricity into a controlled protective function, preventing damage to peripheral circuits while maintaining proper display device functionality.
Solution Approach 2:
The patent applies the 'Intermediary' principle by introducing a protection structure as an intermediary element between the peripheral circuits and the harmful static electricity. This protection structure, disposed in the peripheral circuit region and electrically connected to the second electrode, acts as a mediator that intercepts and dissipates static charges before they can damage the gate drivers and data drivers, thus protecting the peripheral circuits without interfering with their normal operation.
2Reliability
If a protection structure is added to cover the peripheral circuits, then damage from static electricity is reduced, but the device complexity increases
Solution Approach 1:
The patent applies the 'Merging' principle by integrating the protection structure with existing components of the display device. The protection structure is electrically connected to the second electrode, which is an existing component in the OLED display device. By merging the protective function with the existing electrode structure, the patent adds protection capability without significantly increasing overall device complexity. The protection structure becomes part of the existing electrical architecture rather than a completely separate system.
Solution Approach 2:
The patent applies the 'Universality' principle by designing the protection structure to serve multiple functions. The conductive layer that forms the protection structure also serves as an electrical connection path to the second electrode. This multi-functional design allows the same structural element to provide both protective dissipation of static electricity and electrical connectivity, thereby reducing the need for additional separate components and minimizing the increase in device complexity.
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 protection structure significantly reduces damage to peripheral circuits from static electricity, enhancing the reliability and reducing pixel defects in display devices by effectively dissipating static charges during manufacturing processes.
Implementation Method 1
at least one protection structure, electrically connected to the second electrode, which covers and protects the peripheral circuits
Data Source
AI summary
A display device includes a substrate having a pixel region and a peripheral circuit region, peripheral circuits disposed in the peripheral circuit region, an insulation layer covering the peripheral circuits, a first electrode disposed on the insulation layer in the pixel region, at least one protection structure disposed on the insulation layer in the peripheral circuit region, and a light emitting structure or a liquid crystal layer disposed on the first electrode. The protection structure can prevent damage to the peripheral circuits caused by static electricity generated in manufacturing processes, so that the display device can have improved reliability while reducing defects of pixels in the display device.