Pixel Structure With Insulation Layer For Display Panel Short-Circuit Prevention
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Solution Overview
Problem
In high-definition display panels, the close proximity of conductive layers during the fabrication of pixel structures often leads to short-circuit issues due to the coupling effect, affecting the reliability and quality of the display.
Innovation Solution
The pixel structure incorporates multiple gate insulation layers to isolate the pixel electrode from other conductive layers, with a second gate insulation layer covering most of the pixel electrode area and featuring a contact opening to expose a portion, preventing short-circuits by ensuring the pixel electrode is not co-planar with other conductive layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pixel electrode and data lines are disposed on the same plane to reduce fabrication complexity, then the manufacturing process is simplified, but short-circuit problems occur when conductive objects fall between the pixel electrode and data lines
Solution Approach 1:
The patent introduces a second gate insulation layer that covers the pixel electrode, moving the data lines to a different plane (on top of the second gate insulation layer) rather than keeping them on the same plane as the pixel electrode. This spatial separation in the vertical dimension prevents short-circuits while maintaining fabrication efficiency
Solution Approach 2:
The second gate insulation layer acts as an intermediary barrier between the pixel electrode and the data lines. It provides electrical isolation and physical separation, preventing direct contact between conductive elements while allowing the structure to remain compact
2Area of stationary object
If the pixel electrode area is increased to improve aperture ratio, then display quality is enhanced, but the risk of short-circuits with adjacent conductive layers increases
Solution Approach 1:
By stacking the data lines on top of the second gate insulation layer that covers the pixel electrode, the patent enables larger pixel electrode area without increasing lateral proximity to conductive elements. The vertical separation allows aperture ratio improvement while maintaining electrical isolation
Solution Approach 2:
The gate insulation system is segmented into a first gate insulation layer and a second gate insulation layer. The second layer specifically covers the pixel electrode area, providing targeted isolation that enables larger electrode area while preventing short-circuits with adjacent conductive structures
Data Source
AI summary
A pixel structure disposed on a substrate is provided. The pixel structure includes a gate electrode, a first gate insulation layer, a pixel electrode, a second gate insulation layer, a channel layer, a source electrode, a drain electrode and a common electrode. The gate electrode is disposed on the substrate and covered by the first gate insulation layer. The pixel electrode is disposed on the first gate insulation layer and covered by the second gate insulation layer. The pixel electrode is located between the first and the second gate insulation layers. The second gate insulation layer has a first contact opening exposing a portion of the pixel electrode. The channel layer is disposed on the second gate insulation layer. The drain electrode electrically connected to the pixel electrode. The source electrode is disposed on the second gate insulation layer. The common electrode is disposed on the second gate insulation layer.