Reflection-Adjusting Layer for Touch Display Visibility
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Solution Overview
Problem
Display apparatuses often experience reduced or impaired visibility due to external light reflection, which affects their performance and user experience.
Innovation Solution
The implementation of a display apparatus that includes a low reflection layer and a reflection-adjusting layer on a display element, featuring a first and second light-emitting element emitting light in different wavelength bands, a touch sensing layer with specific electrode and insulating layers, and a light-blocking layer with openings corresponding to the emission areas, along with a reflection-adjusting layer having a higher refractive index than the touch insulating layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a low reflection layer and reflection-adjusting layer are added to reduce external light reflection, then visibility is improved, but device complexity increases
Solution Approach 1:
The reflection control function is divided into multiple specialized layers: a low reflection layer with specific refractive index for reducing external light reflection, and a reflection-adjusting layer with opening structures for controlling internal light reflection. Each layer targets specific reflection mechanisms to achieve comprehensive visibility improvement without requiring a single complex solution.
Solution Approach 2:
The light-blocking layer with openings serves as an intermediary structure between the touch sensing layer and the emission areas. It selectively blocks light paths while allowing light emission through the openings, mediating between the need for reflection control and the need for light transmission for display functionality.
2Illumination intensity
If multiple layers with specific refractive indices are implemented to control light reflection, then light transmittance is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise refractive index parameters for different layers (low reflection layer: 1.3-1.6, reflection-adjusting layer: higher than touch insulating layer) to optimize light transmission and reflection control. By establishing clear parameter ranges, the invention provides manufacturing guidance to achieve consistent optical performance while accounting for material variability.
3Object-affected harmful factors
If a light-blocking layer with openings is added to control light paths, then visibility is improved, but device complexity increases
Solution Approach 1:
The light-blocking layer serves multiple functions simultaneously: it blocks light paths to prevent internal reflection, provides structural support for the touch sensing layer, and defines the opening patterns for light emission. This multi-functionality reduces the need for separate components and simplifies the overall device architecture despite the added complexity of the opening structures.
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 significantly improves the visibility of the display apparatus by reducing external light reflection, enhancing light transmittance, and maintaining high light-emission efficiency, thereby providing better display quality and user experience.
Implementation Method 1
a reflection-adjusting layer on the light-blocking layer, wherein a refractive index of the reflection-adjusting layer is higher than a refractive index of the second touch insulating layer
Data Source
AI summary
A display apparatus includes a first light-emitting element implementing a first emission area, a second light-emitting element implementing a second emission area, a low reflection layer on the first light-emitting element and the second light-emitting element, a first touch insulating layer including a first opening overlapping the second emission area, and a second touch insulating layer including a second opening overlapping the first opening, a light-blocking layer on the touch sensing layer and including a third opening corresponding to the first emission area and a fourth opening corresponding to the second emission area, and a reflection-adjusting layer wherein a refractive index of the reflection-adjusting layer is higher than a refractive index of the second touch insulating layer.