Display Panel Electrostatic Discharge Layer Switching
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Solution Overview
Problem
Display panels are prone to abnormal displays due to external and internal static electricity, which can cause serious issues like afterimages, flicker, and signal line burning, especially in high-temperature or high-light environments.
Innovation Solution
A display panel design incorporating a first and second electrostatic discharge layer with a switching device to connect them, along with a surface conductive layer and ground wire, to equalize potentials and discharge static electricity, using materials like conductive silver paste and thermistors or photoresistors to manage connections based on environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a switching device is added to control electrical connection between electrode portions, then static electricity protection is improved, but device complexity increases
Solution Approach 1:
The patent applies the dynamics principle by using a switching device that can dynamically change the electrical connection state between the first and second electrode portions based on environmental conditions. The switching device transitions between conducting and non-conducting states to adaptively manage static electricity discharge, allowing the electrostatic discharge layer to respond to changing conditions rather than maintaining a fixed connection configuration.
Solution Approach 2:
The patent applies parameter changes by utilizing environmental parameters (temperature, light intensity) to control the switching device's operational state. The switching device's electrical properties change in response to environmental conditions, enabling automatic adjustment of the electrostatic discharge pathway without requiring complex external control systems.
2Reliability
If electrostatic discharge layers are separated in thickness direction, then static electricity discharge capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies the dimensionality change principle by separating the electrostatic discharge functionality into two distinct layers positioned at different locations in the thickness direction of the display panel. This spatial separation in the vertical dimension allows each layer to independently contribute to static electricity discharge while maintaining appropriate electrical connections through the switching device, effectively utilizing the thickness dimension to enhance discharge capability without requiring excessive lateral precision.
3Adaptability or versatility
If switching device is used to control electrical connection, then adaptability to environmental conditions is improved, but ease of manufacture decreases
Solution Approach 1:
The patent applies the self-service principle by designing the switching device to automatically respond to environmental conditions without requiring external control systems. The switching device inherently senses temperature and light intensity changes and adjusts its electrical connection state accordingly, enabling the electrostatic discharge layer to self-regulate based on environmental parameters while simplifying the manufacturing process by eliminating complex control circuitry.
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
Effectively prevents adverse effects of static electricity on the display panel by ensuring equal potential across electrostatic discharge layers and discharging external static, thereby maintaining normal operation and preventing damage.
Implementation Method 1
a first electrical connection member configured to electrically connect the second electrostatic discharge layer with the second electrode portion of the first electrostatic discharge layer
Implementation Method 2
the switching device is a thermistor, the thermistor is connected between the first electrode portion and the second electrode portion, and a resistance of the thermistor decreases with increasing temperature
Implementation Method 3
the switching device is a photoresistor, the photoresistor is connected between the first electrode portion and the second electrode portion, and a resistance of the photoresistor decreases with increasing light intensity
Implementation Method 4
a second electrical connection member configured to electrically connect the surface conductive layer to the ground wire
Data Source
AI summary
A display panel and a display device are provided. The display panel includes: a first electrostatic discharge layer comprising a first electrode portion and a second electrode portion disconnected from each other, the first electrode portion being located in a display area of the display panel, and the second electrode portion being located in a peripheral area of the display panel; a second electrostatic discharge layer separated from the first electrostatic discharge layer in a thickness direction of the display panel; a first electrical connection member configured to electrically connect the second electrostatic discharge layer with the second electrode portion of the first electrostatic discharge layer; and a switching device configured to turn on or off an electrical connection between the first electrode portion and the second electrode portion.