Display Electrode Layout for Narrow-Bezel Touch Detection

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Solution Overview

Problem

Existing display devices face challenges in efficiently narrowing the frame by optimizing the layout of peripheral circuits, particularly in the corners, which hinders the reduction of the peripheral area.

Innovation Solution

The display device employs a layout where scanning line drivers and signal line drivers are curved around corner portions, and switch units are arranged in intersecting directions to efficiently utilize space, allowing for a narrower frame while maintaining effective touch detection functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If peripheral circuits are arranged in conventional layouts, then the frame area is larger, but the layout efficiency is lower

Engineering Contradiction:

Improveframe areaVSAvoidlayout efficiency

Core Design Contradiction:

Area of stationary objectVSProductivity

Solution Approach 1:

The scanning line driver and signal line driver are arranged in curved configurations around corner portions of the display area. This curved layout allows the peripheral circuits to efficiently utilize the corner spaces, reducing the overall frame area while maintaining effective circuit functionality and signal transmission paths.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

Switch units are arranged in intersecting directions (first direction and second direction perpendicular to each other) relative to the common electrodes. This multi-directional arrangement optimizes space utilization in the peripheral area, enabling more compact positioning of drive circuits and reducing the frame area without compromising touch detection functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If switch units are arranged in intersecting directions, then space utilization is optimized, but the device complexity increases

Engineering Contradiction:

Improveperipheral areaVSAvoidcircuit arrangement complexity

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The switch units are divided into multiple independent units arranged in different directions. Each switch unit can be independently positioned and connected to corresponding common electrodes, allowing flexible space utilization while maintaining manageable circuit complexity through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The switch units serve multiple functions: they control the drive signals for common electrodes and enable touch detection functionality. By making the switch units multi-functional, the design reduces the need for separate dedicated circuits, thereby optimizing space without proportionally increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250347962A1Display device

Publication Date: 2025.11.13 MAGNOLIA WHITE CORP

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.