Antistatic Member for Display Edge Brightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The display panel in display apparatuses often experiences a phenomenon where the edge portions emit brighter light or exhibit a greenish tint, leading to degraded display quality due to charge accumulation and electric field shifts affecting the threshold voltage of driving transistors.
Innovation Solution
The display apparatus includes a display panel with a substrate, pixel array, and encapsulation, protected by a cover member and an optical plate with a first hole. An antistatic member is disposed below the cover member and in the first hole, connected to a crack detecting part to ground charges and electric fields, thereby reducing the brightness and greenish phenomena at the edge portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a cover member is added to protect the display panel from external impact, then the protection strength is improved, but charge accumulation and electric field shifts occur at the end portion, causing brightness and greenish phenomena
Solution Approach 1:
An antistatic member is introduced as an intermediary component between the cover member and the display panel. This antistatic member serves as a mediator to dissipate accumulated charges and electric fields, preventing them from affecting the display panel while allowing the cover member to maintain its protective function.
Solution Approach 2:
The harmful electric fields and accumulated charges are extracted and directed away from the display panel through the antistatic member. The antistatic member provides a dedicated path for charge dissipation, separating the charge accumulation issue from the display panel's operational area.
2Power
If the threshold voltage of driving thin film transistor increases due to charge accumulation, then the display panel emits light at higher voltage, but this causes edge portions to emit brighter light and degrades display quality
Solution Approach 1:
The antistatic member acts as a mediator that prevents charge accumulation from affecting the threshold voltage of driving thin film transistors. By dissipating charges before they can shift the threshold voltage, the antistatic member maintains stable electrical characteristics and prevents abnormal light emission at edge portions.
Solution Approach 2:
The antistatic member performs preliminary charge dissipation to prevent threshold voltage shifts before they can cause display quality degradation. This proactive approach prevents the harmful effect (abnormal brightness at edges) from occurring in the first place.
3Reliability
If charges are accumulated in the cover member, then the cover member protects the display panel, but the accumulated charges move to the display panel causing threshold voltage shifts and brightness anomalies
Solution Approach 1:
The antistatic member is positioned between the cover member and the display panel to serve as a charge dissipation pathway. It allows the cover member to maintain its protective function while providing a safe route for accumulated charges to dissipate without affecting the display panel.
Solution Approach 2:
The harmful electric fields and accumulated charges are extracted from the cover member through the antistatic member before they can reach and affect the display panel. This extraction prevents the charges from causing threshold voltage shifts and brightness anomalies.
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 implementation of the antistatic member effectively grounds charges and electric fields, preventing shifts in the threshold voltage of driving transistors, which in turn reduces the brightness and greenish tint issues at the edge portions of the display panel, thereby enhancing display quality.
Implementation Method 1
an antistatic member which is disposed below the cover member and in the first hole, and is in contact with the crack detecting part
Data Source
AI summary
A display apparatus includes a display panel including a substrate, a pixel array part, and an encapsulation part, a cover member disposed on the display panel, an optical plate which is disposed between the display panel and the cover member and has a first hole, a crack detecting part disposed on the encapsulation part, and an antistatic member which is disposed below the cover member and in the first hole.