Integrated Gate Driver Pixel Structure for Narrow Bezel Displays
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Solution Overview
Problem
Wearable electronic devices face challenges in miniaturization, power consumption, and display flexibility due to traditional display device designs, particularly when used for long periods and in IoT applications requiring 5G communication, which demands smaller, lighter, and more versatile form factors with reduced load and fatigue.
Innovation Solution
A display device structure comprising multiple layers with integrated source drivers and sensors, allowing for a free-shape display region without peripheral drivers, utilizing MEMS sensors and organic light-emitting elements, and incorporating antennas for multi-frequency band communication, enabling reduced component count and enhanced productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional display device designs with peripheral gate drivers are used, then display functionality is achieved, but device weight and housing size increase
Solution Approach 1:
The patent merges the gate driver circuit with the pixel structure by implementing a shared transistor approach, where transistors are共用 between gate driver functions and pixel switching functions. This integration eliminates separate peripheral gate driver regions, reducing overall device weight and housing size while maintaining full display functionality.
Solution Approach 2:
The patent creates multi-functional transistors that serve dual purposes: acting as switching elements within pixels and as gate driver components. This universal design allows the same hardware structures to perform multiple functions, eliminating the need for dedicated peripheral driver circuits and reducing device complexity.
2Weight of moving object
If display devices are made small and lightweight for wearable applications, then portability improves, but display resolution and performance deteriorate
Solution Approach 1:
The patent nests the gate driver functionality within the pixel structure itself, creating a hierarchical integration where driver functions are embedded at the pixel level. This nested arrangement maximizes space utilization, allowing high-resolution displays to be achieved in compact form factors suitable for wearable applications.
Solution Approach 2:
The patent transitions from a planar peripheral driver layout to a three-dimensional integrated structure where gate driver functions are embedded within the pixel layer stack. This dimensional reorganization enables higher resolution displays in smaller packages by utilizing vertical space and layered integration.
3Adaptability or versatility
If multiple antennas for 5G communication are added, then communication capability improves, but device complexity and power consumption increase
Solution Approach 1:
The patent combines multiple antenna functions into an integrated antenna structure that supports multiple frequency bands and communication protocols simultaneously. This merged antenna design provides 5G communication capability across different bands without requiring separate antenna elements, thereby reducing device complexity and component count.
4Adaptability or versatility
If display devices support free shapes (circular, elliptical, triangular), then design flexibility improves, but manufacturing complexity increases
Solution Approach 1:
The patent creates a universal pixel and driver structure that can be configured to produce various display shapes. The same fundamental building blocks and circuit architectures can be arranged to form rectangular, circular, elliptical, or triangular displays, enabling shape flexibility without requiring different manufacturing processes for each geometry.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a lightweight, high-resolution display with reduced power consumption and increased productivity, suitable for various shapes and IoT applications, while minimizing load and fatigue, and supporting efficient 5G communication.
Implementation Method 1
The pixel includes a light-emitting element
Data Source
AI summary
A display device having a narrow bezel region is provided. The display device includes a first layer and a second layer. The first layer includes a source driver and one part of a sensor, and the second layer includes a gate driver, a plurality of pixels, and the other part of the sensor. The plurality of pixels include a pixel in which a light-emitting element emits light and a pixel having a function of the gate driver. An opening portion where the one part of the sensor is formed and a first terminal connected to the source driver are provided on the top surface of the first layer, and a second terminal is provided on the opposite side of the surface where the pixels included in the second layer are arranged. The first terminal is bonded to the second terminal, so that they are electrically connected to each other and the sensor is formed. Since an output signal of the source driver is directly supplied through the first terminal to a wiring to which the plurality of pixels are connected, the source driver and the gate driver do not need to be provided in a peripheral region of a display region where the plurality of pixels are provided.