Display Panel Gate Circuit Shielding for Narrower Bezels
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Solution Overview
Problem
The challenge of reducing the size of the non-display area (bezel) in display panels is hindered by the presence of the gate driving circuit, which is typically located in the non-display area, making it difficult to minimize the bezel size.
Innovation Solution
A display apparatus and panel design incorporating a substrate with a base circuit layer containing a gate driving circuit, a pixel layer with subpixels, and shielding layers to reduce parasitic capacitance and minimize the non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the gate driving circuit is placed in the non-display area, then the circuit can be properly positioned, but the bezel size increases
Solution Approach 1:
The gate driving circuit is moved from the traditional planar non-display area into the third dimension by embedding it within the display area. The circuit is positioned between the substrate and the pixel layer, utilizing the vertical space within the display volume rather than expanding the horizontal bezel area. This dimensional transition allows the circuit to coexist with the display area without increasing the visible bezel size.
2Area of stationary object
If the gate driving circuit is disposed across the display area, then the bezel size is reduced, but parasitic capacitance increases
Solution Approach 1:
A shielding layer is introduced as an intermediary element between the gate driving circuit and the pixel layer. This shielding layer, positioned adjacent to the gate driving circuit, acts as an electrostatic barrier that prevents parasitic capacitance coupling between the circuit and the pixel electrodes. The shielding layer effectively mediates the electromagnetic interaction, allowing the circuit to be disposed within the display area while maintaining electrical performance.
3Reliability
If shielding layers are added to reduce parasitic capacitance, then electrical performance improves, but device complexity increases
Solution Approach 1:
The shielding layer is merged with the existing base circuit layer structure. Rather than being a completely separate component, the shielding layer is integrated into the base circuit layer that already exists in the display panel architecture. This merging approach allows the shielding function to be added while minimizing the increase in overall device complexity, as the shielding layer shares the same structural platform and manufacturing process flow as the base circuit layer.
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 design effectively reduces parasitic capacitance between the gate driving circuit and pixel layer, allowing for a narrower bezel and a lighter display apparatus.
Implementation Method 1
a first shielding layer between the base circuit layer and the pixel layer
Data Source
AI summary
A display apparatus may comprise a substrate, a base circuit layer on the substrate, the base circuit layer including a gate driving circuit, a pixel layer on the base circuit layer, the pixel layer including a plurality of subpixels, a first shielding layer between the base circuit layer and the pixel layer, and a second shielding layer between the substrate and the base circuit layer.