Peripheral Resonator Structure Suppressing Visible Light Reflection
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Solution Overview
Problem
Conventional display devices face issues with external light reflection in peripheral regions, leading to stray light generation, which conventional techniques have not adequately addressed.
Innovation Solution
A display device configuration featuring a reflecting portion, an insulating layer, and a color filter in a specific order around the display region, where the reflecting portion and electrode form a resonator structure to weaken light of a predetermined color, or a light absorption portion to absorb light passing through the color filter, effectively suppressing visible light region reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a reflecting portion (metal layer) is provided in the peripheral region, then the display device structure is formed, but external light is reflected and stray light is generated
Solution Approach 1:
The patent applies local quality by providing the color filter only in the peripheral region surrounding the display region, while the display region maintains its original structure without the filter. This localized application of the color filter selectively addresses the reflection problem in the peripheral region without affecting the display quality in the central region.
Solution Approach 2:
The color filter acts as an intermediary layer between the reflecting portion and the external environment. It mediates the interaction by selectively absorbing specific wavelengths of external light before they can be reflected by the metal layer, thereby reducing stray light generation while maintaining the structural integrity of the reflecting portion.
2Object-affected harmful factors
If color filters of two or more colors are stacked in the peripheral region to suppress visible light reflection, then external light reflection is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent extracts the color filtering function from the display region and applies it only to the peripheral region. By removing the need for multiple stacked filters and implementing a single color filter in the periphery, the solution simplifies the overall structure while still achieving the goal of suppressing visible light reflection and reducing manufacturing complexity.
3Area of stationary object
If the peripheral region frame is narrowed to improve display area, then display area increases, but external light reflection becomes more problematic
Solution Approach 1:
The patent applies local quality by concentrating the light suppression function in the peripheral region where the color filter is provided. This allows the frame to be narrowed and display area to be maximized, while the localized color filter in the periphery effectively handles the external light reflection problem that would otherwise be exacerbated by the narrower frame.
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 proposed configuration significantly reduces external light reflection in the peripheral regions, maintaining image quality even when the frame is narrowed, and simplifies manufacturing by integrating the resonator structure and color filter production.
Implementation Method 1
the reflecting portion and the electrode constitute a resonator structure, and the resonator structure weakens light of a predetermined color
Implementation Method 2
the light absorption portion absorbs light that passes through the color filter
Data Source
AI summary
Provided is a display device capable of suppressing reflection of light of a visible light region in a peripheral region. The display device includes a reflecting portion, an insulating layer, an electrode, and a filter of a predetermined color that are provided in this order in a region around a display region. The reflecting portion and the electrode constitute a resonator structure, which weakens light of the predetermined color.