Light Blocking Layer Layout Against Display Bright Spots
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Solution Overview
Problem
Display devices are susceptible to bright spots due to the inflow of external static electricity, which affects the performance and image quality.
Innovation Solution
The display device incorporates a light blocking layer with specific connectors and outer portions designed to prevent direct connection between the second connector and outer portion, along with a semiconductor layer to bypass static electricity, thereby preventing its entry into the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light blocking layer is directly connected to the outer portion through both first and second connectors, then the electrical connectivity is improved, but static electricity can flow into the display area causing bright spots
Solution Approach 1:
The light blocking layer is segmented into multiple portions (first light blocking layer and second light blocking layer) that are spatially separated. The first light blocking layer connects to the outer portion through the first connector, while the second light blocking layer remains isolated from the outer portion. This segmentation allows selective electrical connection that maintains connectivity while preventing static electricity from reaching the display area through the second connector path.
Solution Approach 2:
The first light blocking layer acts as an intermediary between the outer portion and the display area. It is connected to the outer portion through the first connector and can dissipate static electricity safely, preventing direct flow of static electricity to the display area through the light blocking layer network.
2Object-affected harmful factors
If the light blocking layer is isolated from the outer portion, then static electricity prevention is improved, but electrical connectivity and voltage distribution are worsened
Solution Approach 1:
The light blocking layer structure is divided into segments with different connection states: the first light blocking layer is connected to the outer portion to handle static electricity, while the second light blocking layer is isolated to prevent static electricity flow. This segmented approach allows simultaneous achievement of static electricity prevention and controlled electrical connectivity.
Solution Approach 2:
Different portions of the light blocking layer are assigned different electrical connection qualities: the first light blocking layer has high electrical connectivity to the outer portion for static electricity dissipation, while the second light blocking layer maintains isolation to prevent harmful electrostatic discharge into the display area. Each portion's electrical property is optimized for its specific function.
Data Source
AI summary
A display device includes: a substrate including a display area and a non-display area; a light blocking layer disposed on the substrate; and a semiconductor layer disposed on the light blocking layer, wherein the light blocking layer includes a plurality of flat plate portions disposed in the display area, a first connector connected to the flat plate portions in a first direction, a second connector connected to the flat plate portions in a second direction perpendicular to the first direction, and an outer portion disposed in the non-display area, and the first connector and the outer portion are directly connected to each other, and a width of the outer portion is greater than a width of the first connector.