Curved Display Connecting Lines Reducing Dead Space and Parasitic Capacitance
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Solution Overview
Problem
Display apparatuses face challenges in minimizing dead space at corners while maintaining signal transmission efficiency, as existing designs often result in parasitic capacitance and degradation of picture quality due to the arrangement of connecting lines.
Innovation Solution
The display apparatus incorporates a unique arrangement of first connecting lines that extend from the edge of the display area, bending towards the corner, with alternating sub-portions parallel to scan and data lines, reducing overlap and parasitic capacitance, and featuring a zigzag or linear shape to minimize dead space without compromising signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If connecting lines are arranged to extend from the edge towards the corner in a straight line, then dead space at corners is reduced, but parasitic capacitance increases and picture quality degrades
Solution Approach 1:
The connecting line is divided into multiple segments: a first portion extending from the edge in a direction away from the peripheral area, and a second portion bent from the first portion and extending towards the corner. This segmentation allows the line to change direction gradually, reducing parasitic capacitance while still minimizing dead space.
Solution Approach 2:
The connecting line transitions from a simple linear path to a two-dimensional bent path with alternating sub-portions. The first sub-portion extends parallel to scan lines and the second sub-portion extends parallel to data lines, creating a stepped or zigzag pattern that reduces overlap with active display elements while maintaining corner coverage.
2Area of stationary object
If connecting lines are arranged to minimize dead space, then corner area is utilized efficiently, but signal transmission stability deteriorates due to increased parasitic capacitance
Solution Approach 1:
By segmenting the connecting line into alternating sub-portions parallel to scan lines and data lines, the design distributes the signal path across different orientations. This reduces the length of continuous parallel segments, thereby minimizing parasitic capacitance accumulation while maintaining efficient corner area utilization.
Solution Approach 2:
The connecting line incorporates bent portions with smooth transitions between directions rather than sharp angles. This curved path reduces electromagnetic interference and parasitic effects compared to straight angular connections, improving signal transmission stability while filling corner space effectively.
3Area of stationary object
If connecting lines are arranged in a bent shape towards the corner, then dead space is reduced, but the complexity of the line arrangement increases
Solution Approach 1:
The bent connecting line is systematically segmented into repeating units of first sub-portions and second sub-portions. This modular segmentation provides a predictable pattern that simplifies manufacturing and design processes compared to arbitrary curved paths, reducing complexity while achieving dead space reduction.
Solution Approach 2:
The connecting line utilizes the two-dimensional plane by alternating between directions parallel to scan lines and data lines. This creates a stepped or zigzag pattern that efficiently fills corner space without requiring three-dimensional routing or complex curved geometries, maintaining manufacturing simplicity.
Data Source
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AI summary
A display apparatus includes a substrate including a display area and a peripheral area at least partially surrounding the display area. A corner of an edge of the display area is curved. The peripheral area includes a pad area. A data line is disposed in the display area. A first connecting line is disposed in the display area and is connected to the data line to transmit a signal from the pad area to the data line. The first connecting line includes a first portion extending from the edge in a direction away from the peripheral area and a second portion bent with respect to the first portion and extending towards the corner.