Array Substrate Lattice Electrode Film for Low-Reflection Displays
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Solution Overview
Problem
Existing display devices with conductive layers on array substrates reflect light, degrading image visibility due to the lack of effective light-shielding mechanisms.
Innovation Solution
A display device configuration featuring a conductive layer with a lattice shape on the array substrate, overlaid with a translucent light interference thin film and a metal thin film, which reduces reflection by utilizing thin film interference effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metal layer is provided on the array substrate to block light between pixels, then light shielding between pixels is improved, but light reflection degrades image visibility
Solution Approach 1:
The patent converts the harmful light reflection from the metal layer into a beneficial effect by introducing a light interference thin film that uses optical interference to redirect reflected light away from the viewer's line of sight. The metal layer's reflective property is transformed from a defect into a functional component when combined with the interference film, which constructive and destructive interference to minimize visible reflection while maintaining electrical functionality.
Solution Approach 2:
The patent employs a composite structure combining a metal layer with a light interference thin film made of dielectric materials. This composite approach allows the metal layer to provide effective light shielding between pixels while the dielectric interference film suppresses unwanted reflections. The combination of materials with different optical properties creates a multi-functional layer that simultaneously achieves both light blocking and reflection reduction.
2Device complexity
If no light-shielding layer is provided on the counter substrate to reduce overlap misalignment influence, then manufacturing complexity is reduced, but light reflection from the conductive layer degrades visibility
Solution Approach 1:
The patent introduces a light interference thin film as an intermediary layer between the metal conductive layer and the viewer. This intermediary film does not replace the need for light-shielding layers but works in conjunction with them to reduce reflection. The interference film acts as a mediator that optically modifies the reflection characteristics of the underlying metal layer without adding significant structural complexity to the display device.
Solution Approach 2:
The patent changes the optical parameters of the conductive layer by adding the light interference thin film, which modifies the reflection characteristics through controlled optical interference. By adjusting the thickness and refractive index of the interference film, the reflection parameters can be optimized to minimize visible glare while maintaining the electrical conductivity and light-shielding functions of the metal layer.
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
This configuration effectively minimizes light reflection from the conductive layer, enhancing image clarity and user comfort by reducing glare.
Implementation Method 1
a light interference thin film, being translucent and provided on the conductive layer along the conductive layer
Data Source
AI summary
A display device includes an array substrate, and a counter substrate facing the array substrate. The array substrate includes a plurality of signal lines arranged at an interval in a first direction, a plurality of scanning lines arranged at an interval in a second direction, a color filter disposed at a position overlapping an opening surrounded by two of the signal lines adjacent to each other and two of the scanning lines adjacent to each other, a plurality of pixel electrodes disposed for respective pixels, a common electrode superimposed on the pixel electrodes with an insulating film interposed between the common electrode and the pixel electrodes, a conductive layer having a lattice shape and overlapping the signal lines and the scanning lines in plan view, and a light interference thin film, being translucent and provided on the conductive layer along the conductive layer.