Non-Rectangular Display Layout With Load Compensation Circuits
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Solution Overview
Problem
Display apparatuses with non-quadrangular shapes face increased dead areas and reduced display area efficiency due to the arrangement of pixels and driving circuits, leading to suboptimal image quality and space utilization.
Innovation Solution
The design incorporates a non-quadrangular display apparatus with a configuration of pixel circuits, signal lines, load compensation capacitors, and a test circuit, where load compensation capacitors with overlapping electrodes and a connection portion connect signal lines to capacitors, and a test circuit outside the display area, optimizing the layout to reduce dead areas and enhance display efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display area has a non-quadrangular shape, then the display apparatus can achieve various shapes and designs, but the dead area increases and the effective display area decreases
Solution Approach 1:
The patent extends the display area into the dead area by routing signal lines and placing pixel circuits in a three-dimensional configuration. Specifically, signal lines extend in a first direction while pixel circuits are arranged to utilize space in multiple dimensions, converting previously wasted two-dimensional dead area into functional three-dimensional display space.
Solution Approach 2:
The display area is divided into multiple segments including a first display area and a second display area that extends into the dead area. The pixel circuits are segmented into first pixel circuits and second pixel circuits, with each segment served by dedicated signal lines (first signal lines and second signal lines), allowing independent optimization of each segment's function and layout.
2Area of stationary object
If signal lines and pixel circuits are arranged to extend into the dead area, then the effective display area increases, but the device complexity increases due to additional connection portions and test circuits
Solution Approach 1:
The connection portion serves multiple functions simultaneously: it electrically connects the output line to both the first signal line and the second signal line, provides a test circuit interface, and maintains signal integrity across different display areas. This multi-functional design reduces the need for separate components for each function.
Solution Approach 2:
The patent merges the test circuit with the connection portion, allowing the same structural element to serve both as a signal routing interface and as a test access point. The output line is connected to both display areas through the connection portion, which also houses the test circuit, consolidating multiple functions into a single integrated structure.
3Manufacturing precision
If load compensation capacitors are placed adjacent to signal lines in the extended display area, then the image quality improves through load compensation, but the device complexity increases due to additional capacitors and connection portions
Solution Approach 1:
Load compensation capacitors are selectively placed only in specific locations where needed - adjacent to signal lines in the extended display area (second display area) but not necessarily in the main display area. This localized approach provides image quality improvement precisely where the extended geometry creates additional signal line length and load variations, rather than uniformly adding capacitors throughout the entire display.
Solution Approach 2:
The connection portion acts as an intermediary structure that houses the load compensation capacitor and provides electrical connection between the output line, first signal line, and second signal line. This intermediary configuration allows the capacitor to be integrated into the signal path without requiring separate external components, simplifying the overall device structure while maintaining the load compensation function.
Data Source
AI summary
A display apparatus includes: a plurality of pixel circuits at a display area, the display area having a non-quadrangular shape; a first signal line extending on the display area in a first direction, and electrically connected to a first pixel circuit from among the plurality of pixel circuits; a first voltage line extending on the display area in the first direction; a first load compensation capacitor adjacent to an end portion of the first signal line and an end portion of the first voltage line; a test circuit outside the display area; an output line electrically connected to the test circuit; and a connection portion configured to electrically connect the output line, the first signal line, and an electrode of the first load compensation capacitor to each other.