Display Device Wiring Light Reflection Prevention
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Solution Overview
Problem
External light reflection from wirings outside the display area can degrade display quality by making the wirings visible to the user.
Innovation Solution
A display device design that includes a substrate with a display area and a peripheral area, featuring a power voltage supply line with an irregular surface, an insulating layer with openings, and a light-blocking pattern layer to cover these openings, preventing external light from reflecting off the wirings and maintaining display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wirings are arranged outside the display area, then electrical connection is achieved, but external light reflection makes wirings visible and degrades display quality
Solution Approach 1:
A light-blocking pattern layer is introduced as an intermediary element between the external light source and the wirings. This layer selectively blocks light from reaching the wirings in the peripheral area, preventing reflection while maintaining electrical connectivity. The light-blocking pattern layer acts as a mediator that resolves the conflict between electrical functionality and optical quality.
Solution Approach 2:
The light-blocking pattern layer is applied selectively only in the peripheral area where wirings are located, rather than uniformly across the entire display. This local application blocks light reflection from wirings while maintaining transparency and display quality in the active display area, thus resolving the contradiction locally where it is needed.
2Object-affected harmful factors
If a light-blocking pattern layer is added to cover openings, then wiring visibility is prevented, but device structure becomes more complex
Solution Approach 1:
The light-blocking pattern layer serves multiple functions simultaneously: it blocks light reflection from wirings, provides structural support in the peripheral area, and can be integrated with existing manufacturing processes. By making this single layer multi-functional, the patent reduces overall device complexity while achieving the light-blocking objective.
Solution Approach 2:
The light-blocking pattern layer is merged with the existing insulating layer structure and wiring layout. Rather than adding a completely separate component, the light-blocking function is combined with the existing layered structure, reducing the number of discrete parts and simplifying the overall device architecture.
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 external light from reflecting off the wirings, enhancing display quality by ensuring that the wirings remain hidden from view, even when the reflection prevention member is used.
Implementation Method 1
the window includes a light-blocking region and a light-transmissive region
Data Source
AI summary
A display device includes a substrate, a plurality of pixels, a plurality of wirings, a power voltage supply line, an insulating layer, and a window. The substrate includes a display area and a peripheral area outside the display area. The plurality of pixels are in the display area and the plurality of wirings are in the peripheral area. The power voltage supply line covers the plurality of wirings and includes a top surface having an irregular surface corresponding to the plurality of wirings. The insulating layer includes an opening overlapping a first portion of the power voltage supply line. The window is disposed on the insulating layer and includes a light-blocking region and a light-transmissive region, the light-transmissive region entirely covering the opening.