Display Substrate Edge Protection for Stable Peripheral Circuits
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Solution Overview
Problem
Existing display devices face challenges in achieving high operation stability of peripheral circuits, a narrow frame, lightweight design, high definition, reliability, large area, low power consumption, and efficient manufacturing methods.
Innovation Solution
A display device is designed with a first and second substrate, where insulating layers, an adhesive layer, and a protective film are used to enhance stability and reduce the frame size. The protective film can be formed using various materials like oxide, nitride, or metal through an ALD method, and the device can include transistors, capacitors, display elements, light-blocking layers, coloring layers, and spacers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display region is made large and the frame portion is made narrow, then the display area is increased and the frame is narrowed, but the driver circuit is positioned further outside the display region causing decreased reliability of transistor characteristics and unstable circuit operation
Solution Approach 1:
The substrate is divided into a display region and a peripheral circuit region, with the peripheral circuit positioned in the peripheral region rather than outside the display region. This segmentation allows the driver circuit to be integrated within the overall substrate structure, maintaining transistor characteristic stability while maximizing the display region area.
Solution Approach 2:
The layout is reorganized from a conventional arrangement where the driver circuit is outside the display region to an integrated arrangement where the peripheral circuit region is incorporated within the substrate boundaries. This dimensional reorganization allows the display region to extend to the edges of the substrate while the peripheral circuit occupies the peripheral region, eliminating the trade-off between display area and circuit reliability.
2Length of stationary object
If the frame portion is made narrow to achieve a narrow frame display, then the display region is maximized, but the driver circuit positioning becomes problematic and reliability decreases
Solution Approach 1:
The substrate is segmented into a display region and a peripheral circuit region, allowing the frame width to be minimized while the peripheral circuit is positioned in the peripheral region. This segmentation enables the driver circuit to remain close to the display region, maintaining circuit operation stability even with a narrow frame.
Solution Approach 2:
The conventional layout is transformed by incorporating the peripheral circuit region within the substrate boundaries rather than placing it outside. This dimensional change allows the frame width to be reduced to minimal dimensions while the peripheral circuit occupies the peripheral region, ensuring reliable circuit operation without compromising stability.
3Area of stationary object
If the driver circuit is positioned outside the display region, then the display region can be maximized, but the transistor characteristics become unstable and circuit operation becomes unreliable
Solution Approach 1:
The substrate is divided into a display region and a peripheral circuit region, with the driver circuit positioned in the peripheral region. This segmentation allows the display region to be maximized while the driver circuit remains integrated within the substrate, ensuring stable transistor characteristics and reliable circuit operation.
Solution Approach 2:
The layout is reorganized from a conventional arrangement with the driver circuit outside the display region to an integrated arrangement where the peripheral circuit region is incorporated within the substrate. This dimensional reorganization maximizes the display region area while maintaining close proximity between the driver circuit and display region, ensuring stable circuit operation.
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 achieves high operation stability of peripheral circuits, allows for a narrow frame, reduces weight, enhances display definition, improves reliability, enables large-area displays, and minimizes power consumption while providing a novel manufacturing method.
Implementation Method 1
The protective film can be formed using various materials like oxide, nitride, or metal through an ALD method
Data Source
AI summary
A display device in which a peripheral circuit portion has high operation stability is provided. The display device includes a first substrate and a second substrate. A first insulating layer is provided over a first surface of the first substrate. A second insulating layer is provided over a first surface of the second substrate. The first surface of the first substrate and the first surface of the second substrate face each other. An adhesive layer is provided between the first insulating layer and the second insulating layer. A protective film in contact with the first substrate, the first insulating layer, the adhesive layer, the second insulating layer, and the second substrate is formed in the vicinity of a peripheral portion of the first substrate and the second substrate.