Resin Layer Gas Discharging Structures in Array Substrates
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Solution Overview
Problem
In the field of display technology, particularly in TFT-LCDs, existing array substrates face challenges with gas trapped in the resin layer, which can lead to bubbles and parasitic capacitance, affecting display quality and production yield.
Innovation Solution
The array substrate incorporates a resin layer with gas discharging structures that face away from the substrate, positioned to cover thin film transistors and overlapped regions of data and gate lines, reducing bubble formation and electromagnetic interference, and includes a cover electrode to prevent gas accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a resin layer is used to cover data lines and gate lines, then insulation and structural support are improved, but gas becomes trapped forming bubbles and increasing parasitic capacitance
Solution Approach 1:
The resin layer is designed with gas discharging structures (through-holes or blind holes) that create controlled porous pathways. These structures allow gas to escape during and after the encapsulation process, preventing bubble formation while maintaining the resin layer's insulating and structural properties. The porous design enables gas removal without compromising the overall integrity of the encapsulation layer.
Solution Approach 2:
Gas discharging structures are incorporated into the resin layer to extract and remove trapped gas during the encapsulation process. The through-holes or blind holes provide escape routes for gas to be vented out, effectively removing the harmful gas accumulation that would otherwise form bubbles and increase parasitic capacitance between signal lines.
2Object-generated harmful factors
If gas discharging structures are added to the resin layer, then bubble formation and parasitic capacitance are reduced, but device complexity increases
Solution Approach 1:
Gas discharging structures are strategically positioned in specific regions of the resin layer where gas accumulation is most likely to occur, such as over active device areas and signal lines. Rather than uniformly distributing holes throughout the entire resin layer, the design applies gas discharge functionality locally where it is most needed, maintaining simplicity in regions where it is not required.
Solution Approach 2:
The gas discharging function is divided into multiple discrete structures (through-holes or blind holes) distributed at strategic locations within the resin layer. This segmentation allows gas to be discharged from different regions independently, improving overall gas removal efficiency while keeping each individual structure simple and manageable in the fabrication process.
3Productivity
If gas discharging structures are positioned to cover thin film transistors, then gas discharge effectiveness is improved, but interference with pixel areas may occur
Solution Approach 1:
Gas discharging structures are positioned with precise spatial control to target specific regions above thin film transistors where gas accumulation occurs. The locations are carefully selected to avoid overlapping with pixel electrode areas and color filter regions, ensuring that gas discharge functionality is provided without interfering with the optical and electrical performance of the display pixels.
Solution Approach 2:
The gas discharging structures serve as intermediary elements that facilitate gas removal without directly contacting or interfering with pixel components. By positioning these structures in the spaces between pixel elements and utilizing vertical pathways through the resin layer, gas can be discharged effectively while maintaining clear separation from sensitive pixel areas.
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 configuration effectively reduces bubbles and parasitic capacitance, enhancing display quality and production yield by facilitating gas discharge and preventing interference with pixel areas.
Implementation Method 1
a resin layer disposed on the data line and/or the gate line and provided with at least one gas discharging structure each having an opening facing away from the substrate
Data Source
AI summary
The present disclosure discloses an array substrate and a display device. The array substrate includes: a substrate; and a plurality of data lines and a plurality of gate lines disposed on the substrate, the data lines and the gate lines being configured to define a plurality of pixel units. Each pixel units includes: a pixel electrode; a thin film transistor electrically connected to the data line and the gate line and configured to drive the pixel electrode; and a resin layer disposed on the data line and/or the gate line and provided with at least one gas discharging structure each having an opening facing away from the substrate.