Display Common-Electrode Switching Layout for Narrower Frames
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Solution Overview
Problem
Existing display devices face challenges in narrowing the frame due to inefficient layout of peripheral circuits, which occupy a significant area and hinder the reduction of the display device's bezel size.
Innovation Solution
The display device incorporates a first and second common electrode arrangement in orthogonal directions, with switch units selectively supplying drive signals to these electrodes, and optimized layout of scanning and signal line drivers near corners to efficiently utilize the peripheral area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If peripheral circuits are arranged in a conventional layout, then the display device can be manufactured with standard processes, but the frame area becomes large
Solution Approach 1:
The patent applies dimensionality change by transitioning from a planar 2D layout of peripheral circuits to a 3D stacked configuration where circuits are arranged across multiple layers. The first and second common electrodes are positioned at different vertical levels, with switch units selectively connecting to either electrode, creating a three-dimensional circuit architecture that reduces the horizontal frame area while maintaining electrical functionality.
Solution Approach 2:
The patent implements nesting by placing the first common electrode and second common electrode in a nested spatial relationship, where switch units are positioned to selectively connect to either electrode. The circuit elements are nested within a compact volume, with multiple functional layers stacked vertically to achieve high integration density and minimize the overall device footprint.
2Area of stationary object
If the peripheral area is reduced to narrow the frame, then the bezel size decreases, but the layout efficiency of peripheral circuits becomes insufficient
Solution Approach 1:
The patent applies segmentation by dividing the peripheral circuit functionality into distinct modular units: first common electrode, second common electrode, and multiple switch units. Each segment performs a specific function and can be independently optimized. The switch units are segmented and distributed to selectively connect to either common electrode, allowing efficient utilization of the reduced peripheral area through functional modularity.
Solution Approach 2:
The patent implements multi-functionality where the switch units serve dual purposes: they can selectively connect to either the first common electrode or the second common electrode depending on operational requirements. This universal switching capability allows the same circuit elements to perform multiple functions, maximizing the utilization of the compact peripheral area and improving layout efficiency.
Data Source
AI summary
According to one embodiment, a display device includes a first common electrode and a second common electrode arranged in a first direction, a first switch unit selectively supplying a first drive signal or a second drive signal different from the first drive signal to the first common electrode, and a second switch unit selectively supplying the first drive signal or the second drive signal to the second common electrode, wherein the second common electrode and the first switch unit are arranged in a second direction intersecting the first direction, the first switch unit comprises a first switch circuit and a second switch circuit arranged in the second direction.