Antireflective Film on Array Substrate for Narrow LCD Frames
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Solution Overview
Problem
Conventional liquid crystal display panels face challenges in achieving a narrow frame design without compromising display contrast due to the reflection of metal lines on the array substrate, which enhances the reflection effect and lowers image quality, especially under strong light.
Innovation Solution
Incorporating an antireflective film made of Magnesium Fluoride or other materials with specific thicknesses over the metal traces on the array substrate, ensuring it completely covers the metal traces and interference with reflected light from the front polarizer to reduce reflections, thereby maintaining high contrast and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the array substrate is disposed above the color filter substrate to eliminate the need for additional shielding structure, then the frame width is reduced, but the metal lines on the array substrate are not shielded by the black matrix and reflection effect is enhanced, lowering display contrast
Solution Approach 1:
An antireflective film is introduced as an intermediary layer between the array substrate and the viewing environment. This film specifically targets and reduces the reflection effect from metal lines on the array substrate, allowing the substrate to be positioned above the color filter substrate for narrow frame design while maintaining display contrast through reduced unwanted reflections.
Solution Approach 2:
The refractive index and thickness parameters of the antireflective film are optimized to minimize reflection. By changing the optical parameters of the film layer, the reflection effect from metal lines is reduced, enabling the array substrate to be placed above the color filter substrate without compromising display contrast.
2Object-affected harmful factors
If an additional shielding structure is added to block processing for the COF structure, then the reflection effect is reduced, but the frame width increases
Solution Approach 1:
The antireflective film serves as a mediator that reduces reflection effects without requiring additional shielding structures. This allows the COF structure to be positioned within the array substrate area, eliminating the need for extra shielding and maintaining narrow frame width while still reducing unwanted reflections.
Solution Approach 2:
The shielding function is extracted from the traditional black matrix structure and transferred to the antireflective film layer. This extraction allows the shielding effect to be achieved without adding frame width, as the antireflective film is integrated into the existing display structure rather than being an additional peripheral component.
3Length of stationary object
If the thickness of the display is reduced for ultra-thin design, then the appearance is improved, but the structural components need re-positioning which complicates the structure design
Solution Approach 1:
Multiple functions are merged into the antireflective film layer, which simultaneously provides reflection reduction, structural support, and optical optimization. This merging allows ultra-thin design without requiring separate shielding structures or complex re-positioning of components, as the antireflective film integrates multiple functions into a single thin layer.
Solution Approach 2:
The antireflective film is designed to perform multiple functions: reducing reflection from metal lines, providing structural support for the re-positioned array substrate, and optimizing optical performance. This multi-functionality enables ultra-thin display design without increasing structural complexity, as one component fulfills multiple roles that would otherwise require separate elements.
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 effectively reduces reflected light, enhancing the contrast and display quality of the liquid crystal display panel while allowing for a narrower frame design without additional shielding structures.
Implementation Method 1
the reflected light formed on the antireflective film and the reflected light formed by the front polarizer passes through the interference canceling action reduces the reflected light from the front polarizer on the array substrate
Data Source
AI summary
The present application discloses a liquid crystal display panel, comprising an antireflective film, a front polarizer, an array substrate, a liquid crystal layer, a color filter substrate, and a rear polarizer disposed sequentially, a metal trace is disposed on the array substrate, and the antireflective film completely covers the metal trace. The antireflection film is provided on one side of the array substrate away from the color filter substrate in the present application, whereby the reflected light formed on the antireflective film and the reflected light formed by the front polarizer having the interference offsetting action to reduce the reflecting light on the liquid crystal display, thereby increasing the contrast of the liquid crystal display panel and improving the display quality of the image. The frame of the liquid crystal display of the present application can be further narrow and has a high contrast.