Transistor Substrate With Segmented Gate Insulation
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Solution Overview
Problem
The existing organic light emitting display panels face limitations in enhancing the characteristics of switching and driving transistors due to the thinness of the gate insulation layer, which affects storage capacitance and leads to defects during the etching process, resulting in reduced performance and increased complexity in manufacturing.
Innovation Solution
The solution involves a transistor substrate where both ends of the oxide semiconductor transistors are covered by an insulation layer, with the gate of the driving transistor and switching transistor on different layers, and the use of ultraviolet (UV) irradiation to form conductive areas without etching the gate insulation layer, thereby enhancing the storage capacitance and reducing manufacturing defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the thickness of the gate insulation layer is reduced to increase storage capacitance, then the storage capacitance is increased, but the manufacturing precision is reduced due to etching defects
Solution Approach 1:
The gate insulation layer is segmented into two independent layers with different thicknesses. The first gate insulation layer is thinner to increase storage capacitance, while the second gate insulation layer is thicker to provide sufficient margin for etching processes, thereby maintaining manufacturing precision and reducing etching defects.
2Quantity of substance
If additional metal layers are added to increase storage capacitance, then the storage capacitance is increased, but the device complexity and manufacturing process are increased
Solution Approach 1:
Instead of adding additional metal layers to increase storage capacitance, the invention segments the gate insulation layer into two layers with different thicknesses. This approach increases storage capacitance through the optimized insulation layer structure without requiring additional metal layers, thereby avoiding increased device complexity and manufacturing process steps.
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
This approach improves the driving characteristics of the transistors, increases storage capacitance, and simplifies the manufacturing process by eliminating the need for additional metal layers and reducing defects caused by etching, leading to enhanced performance and reliability of the organic light emitting display panels.
Implementation Method 1
the use of ultraviolet (UV) irradiation to form conductive areas without etching the gate insulation layer
Data Source
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AI summary
Disclosed are a transistor substrate, an organic light emitting display panel including the same, a method of manufacturing the transistor substrate, and an organic light emitting display device including the organic light emitting display panel, in which a driving transistor (Tdr) and a switching transistor (Tsw) are provided and each include an oxide semiconductor of which both ends are covered by an insulation layer (103), and a gate (124) of the driving transistor (Tdr) and a gate (114) of the switching transistor (Tsw) are provided on different layers.