Low Reflection Conductive Line for Display Panels
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Solution Overview
Problem
Display panels face challenges in reducing external light reflection, which affects display quality and can lower the aperture ratio of pixels.
Innovation Solution
A display panel design featuring a low reflection conductive line with a metal layer and a transparent conductive oxide layer, where the metal layer has a thickness that allows for partial light transmission, reducing external light reflectance without compromising the aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive line is disposed in the transmission area to improve electrical connection, then electrical conductivity is improved, but external light reflection increases and display quality deteriorates
Solution Approach 1:
The conductive line employs a composite structure consisting of a metal layer and a transparent conductive oxide layer. The metal layer provides high electrical conductivity while the transparent conductive oxide layer reduces light reflection. This composite material approach allows simultaneous achievement of electrical performance and optical performance that neither material could achieve alone.
Solution Approach 2:
The thickness of the metal layer is precisely controlled within a specific range (50-150 nm) to optimize the balance between electrical conductivity and light transmission. By adjusting this critical parameter, the metal layer maintains sufficient conductivity while allowing adequate light transmission to minimize reflection effects.
2Reliability
If the metal layer thickness is increased to improve electrical conductivity, then electrical performance is improved, but light transmission decreases and reflectance increases
Solution Approach 1:
The metal layer thickness is optimized within a specific range (50-150 nm) to achieve the desired balance between electrical conductivity and light transmission. This precise parameter control ensures sufficient electrical performance while maintaining adequate light transmission to minimize reflection.
Solution Approach 2:
By combining the metal layer with a transparent conductive oxide layer, the composite structure compensates for the reduced light transmission caused by the metal layer. The transparent conductive oxide layer restores optical performance while the metal layer provides electrical conductivity.
3Illumination intensity
If the aperture ratio is increased to improve display brightness, then light transmission is improved, but the area available for conductive lines is reduced
Solution Approach 1:
The transparent conductive oxide layer in the composite structure allows the conductive line to maintain electrical functionality while being optically transparent. This enables the conductive line to occupy minimal area in the transmission region, effectively increasing the aperture ratio without sacrificing electrical connection quality.
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 minimizes external light reflection, enhancing display quality by maintaining the aperture ratio and improving the overall performance of the display panel.
Implementation Method 1
a metal layer disposed on the lower surface of the first base substrate and having a thickness to transmit the portion of the incident light
Data Source
AI summary
A display apparatus includes a first base substrate that includes an upper surface and a lower surface facing the upper surface and includes a transmission area and a light blocking area, a low reflection conductive line disposed on the lower surface of the first base substrate, in which a portion of the lower reflection conductive line is overlapped with the transmission area to transmit a portion of an incident light, a second base substrate facing the lower surface of the first base substrate, and a pixel disposed between the first and second base substrates, at least a portion of the pixel being overlapped with the transmission area.