Display Apparatus With Auxiliary-Area Voltage Routing
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Solution Overview
Problem
Display apparatuses face challenges in displaying high-quality images while reducing the area of the peripheral area, which is typically larger than the display area.
Innovation Solution
The display apparatus includes a substrate with a main display area, an auxiliary display area, and a peripheral area, featuring a common voltage supply line, connection lines, pixel electrodes, and a driver circuit that overlap the auxiliary display area, along with horizontal connection lines and contact lines to enhance image quality and reduce peripheral area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the peripheral area is reduced to increase the display area ratio, then the display area ratio is improved, but the image quality deteriorates due to insufficient voltage supply and signal distribution
Solution Approach 1:
The patent divides the voltage supply system into multiple independent pathways by introducing auxiliary connection lines that extend into the auxiliary display area from the common voltage supply line. This segmentation allows voltage to be distributed more efficiently across the reduced peripheral area, maintaining image quality while maximizing the display area ratio.
Solution Approach 2:
The patent extends connection lines from the peripheral area into the auxiliary display area, effectively utilizing the vertical dimension (z-axis) and lateral extension to provide voltage supply pathways. This dimensional approach allows the system to overcome the limitation of reduced peripheral area by creating three-dimensional voltage distribution networks that maintain reliability while maximizing display area.
2Area of stationary object
If the peripheral area is minimized to expand the display area, then the display area is improved, but the voltage supply stability deteriorates
Solution Approach 1:
The patent applies local quality by creating auxiliary connection lines with specific properties (different from main connection lines) that are strategically positioned in the auxiliary display area. These localized voltage supply pathways provide stable voltage distribution to specific regions, ensuring voltage supply stability even when the overall peripheral area is minimized.
Solution Approach 2:
The auxiliary connection lines act as intermediaries between the common voltage supply line and the pixel circuits in the auxiliary display area. These intermediary pathways ensure stable voltage transmission by providing dedicated routes that are optimized for voltage supply, thereby maintaining voltage stability while allowing the peripheral area to be minimized.
3Reliability
If connection lines are extended into the auxiliary display area, then the image quality is improved through better voltage distribution, but the device complexity increases
Solution Approach 1:
The auxiliary connection lines serve multiple functions: they provide voltage supply to the auxiliary display area, act as signal distribution pathways, and contribute to the overall structural integrity of the display device. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while improving image quality.
Solution Approach 2:
The patent merges the voltage supply function and signal distribution function into the same auxiliary connection lines. By combining these functions into unified pathways that extend into the auxiliary display area, the design avoids the complexity of having separate independent systems for each function, thus improving image quality while controlling device complexity.
Data Source
AI summary
A display apparatus includes a substrate including a main display area, an auxiliary display area outside the main display area, and a peripheral area outside the auxiliary display area, a common voltage supply line in the peripheral area, a connection line contacting the common voltage supply line and having a protrusion protruding into the auxiliary display area, a pixel circuit in the main display area, a main pixel electrode located in the main display area and electrically connected to the pixel circuit, a first auxiliary pixel electrode and a second auxiliary pixel electrode located in the auxiliary display area and electrically connected to each other, an extension line electrically connecting any one of the first auxiliary pixel electrode and the second auxiliary pixel electrode to the pixel circuit, and a driver circuit which at least partially overlaps the auxiliary display area in a plan view.