ESD Circuit Integration in Display Data Drivers
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Solution Overview
Problem
Display devices are prone to malfunctioning and damage due to static electricity, which can be transmitted through interconnection structures and affect gate drivers.
Innovation Solution
Incorporating an electrostatic discharge (ESD) circuit within the data driver, featuring diodes and a power clamp, to discharge static electricity before it reaches the gate driver, thereby protecting the gate driver from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an ESD circuit is added to protect the gate driver from static electricity, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent merges the ESD circuit with the data driver by integrating the ESD circuit into the data driver chip. This combination allows the ESD protection function to be provided without adding a separate discrete protection component, thereby improving reliability while minimizing the increase in device complexity.
Solution Approach 2:
The ESD circuit acts as an intermediary component between the data driver and the gate driver. It is positioned in the signal path to intercept and discharge static electricity before it can reach the gate driver, providing protection while maintaining the normal signal transmission function.
2Volume of moving object
If the ESD circuit is integrated within the data driver, then the device compactness is improved, but the manufacturing complexity increases
Solution Approach 1:
By combining the ESD circuit and data driver into a single integrated chip, the patent reduces the overall device volume and eliminates the need for separate ESD protection components. This integration approach achieves compactness while the semiconductor manufacturing process handles the integration complexity.
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 ESD circuit effectively prevents static electricity from reaching the gate driver, reducing the risk of malfunction and damage, and can be integrated into the data driver without increasing the overall size of the display device.
Implementation Method 1
an electrostatic discharge (ESD) circuit in the first data driver, the ESD circuit to discharge static electricity transmitted through the second interconnection line
Implementation Method 2
The ESD circuit may include one or more switches. The switches may include diodes.
Data Source
AI summary
A display device includes a first interconnection line, a first data driver, a second interconnection line, an electrostatic discharge (ESD) circuit, and a display panel. The first connection line transmits a data driving signal. The first data driver includes the first interconnection line and output a data signal based on the data driving signal. The second interconnection line passes through the first data driver and transmits a gate driving signal. The ESD) circuit in the first data driver and discharges static electricity transmitted through the second interconnection line. The first gate driver outputs a gate signal based on the gate driving signal transmitted through the second interconnection line. The display panel receives the data signal and the gate signal.