Curved-Corner Display Driver Layout With Dummy Drivers
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Solution Overview
Problem
In display apparatuses with curved corners, the non-uniform spacing between driving circuits can cause output deviation due to varying distances between drivers, leading to potential image quality issues.
Innovation Solution
The display apparatus incorporates a substrate design with driver sets arranged in the non-display area, including dummy drivers between adjacent sets, and utilizes shared control stages and regular intervals for output stages to maintain consistent output signals across curved corners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If driving circuits are placed along curved corner areas, then the display apparatus can achieve rounded corners, but output deviation occurs due to non-constant distances between drivers
Solution Approach 1:
The patent applies local quality by introducing dummy drivers specifically in corner regions where curvature causes non-uniform spacing. These dummy drivers are placed only in areas where the distance between adjacent drivers exceeds a threshold, allowing the system to maintain uniform effective spacing in critical regions while preserving the overall curved shape of the display apparatus.
Solution Approach 2:
Dummy drivers act as intermediary elements between adjacent driving circuits in curved corner areas. By inserting these intermediate drivers, the system compensates for the non-constant spacing caused by curvature, ensuring that the effective distance between functional drivers remains uniform and preventing output deviation.
2Reliability
If dummy drivers are added between adjacent driver sets, then output deviation is reduced, but device complexity increases
Solution Approach 1:
The patent applies local quality by introducing dummy drivers specifically in corner regions where curvature causes non-uniform spacing. These dummy drivers are placed only in areas where the distance between adjacent drivers exceeds a threshold, allowing the system to maintain uniform effective spacing in critical regions while preserving the overall curved shape of the display apparatus.
Solution Approach 2:
The system dynamically adjusts the configuration of driver sets based on geometric parameters. The processor calculates distances between adjacent drivers and determines whether to include dummy drivers based on whether the distance exceeds a predetermined threshold, allowing the system to adapt to different curvature radii and corner geometries.
3Area of stationary object
If driver sets are arranged to cover curved areas, then the display area can include curved corners, but the distance between drivers becomes non-constant causing image quality issues
Solution Approach 1:
The system dynamically adjusts the configuration of driver sets based on geometric parameters. The processor calculates distances between adjacent drivers and determines whether to include dummy drivers based on whether the distance exceeds a predetermined threshold, allowing the system to adapt to different curvature radii and corner geometries.
Solution Approach 2:
The processor pre-calculates the optimal configuration of driver sets and dummy drivers based on the curved geometry of the display area. This preliminary arrangement ensures that driver spacing is optimized before the display operation begins, preventing output deviation and maintaining image quality across curved regions.
Data Source
AI summary
Provided is a display apparatus including a substrate including a display area and a non-display area surrounding the display area, a plurality of pixels disposed on the substrate in the display area, a plurality of driver sets spaced apart from each other in the non-display area, and a dummy driver located between two adjacent driver sets among the plurality of driver sets. One driver set among the plurality of driver sets includes at least one first driver and at least one second driver. The first driver is connected to m output lines which are connected to some of the plurality of pixels, the second driver is connected to n output lines which are connected to some of the plurality of pixels. When a least common multiple of m and n is o, the driver set includes o/m first drivers and o/n second drivers.