LCD Panel Electrostatic Protection Layer Design
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Solution Overview
Problem
Thin-film transistor liquid crystal display (TFT-LCD) panels face challenges in avoiding static electricity during production and application, which can negatively impact the peripheral circuit and image quality, particularly in display products using gate driver on array (GOA) technology.
Innovation Solution
An electrostatic protection layer is disposed at the peripheral area of the array substrate to cover the peripheral circuit, and a sealant is used between the array and color filter substrates to seal the cell, providing effective electrostatic protection and improving product quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrostatic protection layer is added to protect the peripheral circuit, then the anti-static function is improved, but the device complexity increases
Solution Approach 1:
The electrostatic protection layer is merged with the color filter layer to form a composite structure. The color filter layer serves dual purposes: optical filtering and electrostatic protection. This integration eliminates the need for a separate electrostatic protection layer, thereby improving anti-static function without increasing device complexity.
Solution Approach 2:
The color filter layer is designed to perform multiple functions simultaneously: it acts as both an optical filter for color separation and an electrostatic protection layer for shielding the peripheral circuit. This multi-functionality approach allows the same structural element to address both optical performance and electrostatic protection requirements.
2Device complexity
If the peripheral circuit is exposed without protection, then the device complexity is reduced, but the harmful effect of static electricity increases
Solution Approach 1:
The color filter layer, which would normally only serve optical purposes, is converted into a dual-purpose element that also provides electrostatic protection. The harmful static electricity is blocked by the conductive or dissipative properties of the color filter material, transforming a potential vulnerability into a protected configuration without adding structural complexity.
Solution Approach 2:
The color filter layer acts as an intermediary barrier between the peripheral circuit and the external environment. It mediates the interaction by providing electrostatic shielding while allowing the peripheral circuit to remain structurally simple and exposed where necessary for functionality.
Data Source
AI summary
A liquid crystal display (LCD) panel, a manufacturing method thereof and a display device are provided. The LCD panel includes an array substrate and a color filter substrate which are cell-assembled. Liquid crystals are filled between the array substrate and the color filter substrate. A sealant is disposed between peripheral areas of the array substrate and the color filter color filter substrate to seal the array substrate and the color filter substrate, wherein an electrostatic protection layer is also disposed at the peripheral area of the array substrate and configured to cover a peripheral circuit at the peripheral area of the array substrate to provide electrostatic protection for the peripheral circuit.