Reducing Rounded Corner Bezel Size via Supplementary Voltage Bus
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Solution Overview
Problem
The existing configuration of display devices with rounded corners often results in an increased bezel size due to separate connections between each row of pixel circuits and the voltage supply bus, making it difficult to reduce the bezel size at the rounded corner regions, which is undesirable for aesthetic reasons.
Innovation Solution
A supplementary voltage supply bus is introduced to connect multiple rows of pixel circuits to the voltage supply bus, reducing the need for independent connections and thereby decreasing the bezel size at the rounded corner regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate traces are used to connect each row of pixel circuits to the voltage supply bus, then reliable voltage delivery is ensured, but the bezel size at the rounded corner region increases
Solution Approach 1:
The patent combines multiple separate trace connections into a shared voltage supply bus structure. Instead of having individual traces extending from each row to the voltage supply bus, multiple rows share common voltage supply bus segments, merging the connection paths and eliminating redundant conductive structures in the rounded corner region.
Solution Approach 2:
The voltage supply bus is designed to serve multiple rows of pixel circuits simultaneously through shared connection segments. The bus structure performs multiple functions by providing voltage to several rows through common pathways, reducing the need for dedicated separate connections for each row.
2Reliability
If independent connections are made between each trace and the voltage supply bus in the rounded corner region, then electrical connectivity is ensured, but the bezel size increases
Solution Approach 1:
Multiple independent trace connections are merged into a shared voltage supply bus architecture. The bus structure consolidates multiple connection functions into unified conductive pathways, ensuring electrical connectivity while eliminating the need for separate independent connections from each trace to the voltage supply bus.
3Shape
If the bezel size at the rounded corner region is reduced, then aesthetic appeal is improved, but it becomes difficult to provide adequate connections for pixel circuits
Solution Approach 1:
The voltage supply bus extends into the rounded corner region along the curved geometry, utilizing the available space in a different dimensional arrangement. Instead of straight perpendicular connections, the bus follows the rounded contour, effectively using the curved path to deliver voltage without requiring additional linear space that would increase bezel size.
Data Source
AI summary
A device includes a display panel with a first end, a second end, a first side, and a second side. The display panel includes a rounded corner region located between the first end and the first side and a plurality of pixel circuits. The plurality of pixel circuits includes a first set of pixel circuits ending in the rounded corner region and a second set of pixel circuits ending in a straight region adjacent to the rounded corner region, the straight region located on the first side of the display panel. A voltage supply bus is configured to carry an electrical signal along the rounded corner region and the straight region. A supplementary voltage supply bus, electrically connected to the voltage supply bus, is configured to carry the electrical signal to the plurality of the first set of pixel circuits in the rounded corner region.