Display Panel Second Conductive Part Vertical Extension
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Solution Overview
Problem
The narrow overlap area between fixed potential signal lines and conductive connection layers in display equipment leads to increased resistance, heating, and poor display uniformity, particularly due to the narrowing of the bezel region and issues with gas discharge from organic materials.
Innovation Solution
The display panel design includes a second conductive part with through holes that extends above the line scanning drive circuit, allowing for a wider overlap area with the conductive connection layer, which reduces resistance and enables gas discharge through these holes, preventing cracking of film layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the bezel region is narrowed to achieve high resolution and narrow bezel display equipment, then the display quality is improved, but the overlap area between the fixed potential signal line and the conductive connection layer is reduced
Solution Approach 1:
The second conductive part extends in the vertical direction (away from the substrate) to create an overlapping area with the conductive connection layer. This vertical extension allows the signal line to maintain sufficient overlap area without increasing the horizontal bezel width, thus resolving the contradiction between narrow bezel and adequate overlap area.
Solution Approach 2:
The second conductive part is positioned within the vertical space above the line scanning drive circuit, utilizing the three-dimensional space efficiently. This nesting approach allows the conductive part to extend vertically without occupying additional horizontal space that would increase the bezel width.
2Length of stationary object
If the overlap area is reduced due to narrow bezel, then the bezel width is reduced, but the resistance increases and heating occurs
Solution Approach 1:
By extending the second conductive part vertically away from the substrate, the overlap area with the conductive connection layer is increased in the vertical dimension. This compensates for the reduced horizontal overlap area caused by narrow bezel, thereby maintaining low resistance and preventing heating issues.
3Reliability
If the second conductive part extends above the line scanning drive circuit to widen overlap area, then the resistance is reduced, but gas discharge becomes problematic causing film layer cracking
Solution Approach 1:
The second conductive part is designed with through holes that allow gas to escape during the formation process. This porous structure enables the conductive part to maintain electrical connectivity while providing gas discharge pathways, preventing film layer cracking caused by trapped gas.
Solution Approach 2:
The through holes in the second conductive part act as intermediaries that allow gas to pass through from the first flat layer to the external environment. This mediator structure resolves the conflict between maintaining a continuous conductive path and allowing gas discharge.
4Stability of the object's composition
If through holes are added to the second conductive part for gas discharge, then film layer cracking is prevented, but the conductive connection may be affected
Solution Approach 1:
The second conductive part is designed with through holes that allow gas to escape during the formation process. This porous structure enables the conductive part to maintain electrical connectivity while providing gas discharge pathways, preventing film layer cracking caused by trapped gas.
Solution Approach 2:
The harmful gas is extracted from the system through the through holes in the second conductive part. By removing the gas that would cause film layer cracking, the conductive connection is protected from damage while maintaining its electrical functionality.
Data Source
AI summary
Embodiments of the present disclosure provide a display panel and a display device. The display panel includes a substrate; a first electrode; a second electrode; an organic light-emitting functional layer; a line scanning drive circuit located in a surrounding area; a first flat layer; a fixed potential signal line located in the surrounding area, wherein the fixed potential signal line includes a first and a second conductive parts; an overlapping area is formed between an orthographic projection of the second conductive part on the substrate and an orthographic projection of the line scanning drive circuit on the substrate; the second conductive part includes a plurality of first through holes; and a conductive connection layer; and the conductive connection layer and the second conductive part at least are in direct contact in the overlapping area between the second conductive part and the line scanning drive circuit.