Display Input Sensor Light Absorption Recesses
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Solution Overview
Problem
Display devices with integrated input sensors face challenges in reducing reflectance with respect to external light, which affects the visibility and performance of the display.
Innovation Solution
The display device incorporates an input sensor with a specific structure, including a first and second sensor conductive layer, a light absorption layer disposed in recessed portions of the conductive layers, and a mesh opening, which reduces reflectance by absorbing external light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the input sensor includes conductive layers to sense external input, then the touch-based input function is improved, but the reflectance with respect to external light increases
Solution Approach 1:
The patent applies local quality by creating recessed portions at specific locations on the side surfaces of the conductive layers. These recessed portions are strategically positioned to receive light absorption layers only where needed to reduce reflectance, while maintaining the overall conductive functionality of the sensor layers. This localized modification allows the sensor to reduce harmful reflectance without compromising its touch sensing capability.
Solution Approach 2:
The patent introduces a light absorption layer as an intermediary substance filled into the recessed portions of the conductive layers. This intermediary material specifically absorbs external light that would otherwise be reflected, thereby reducing the harmful reflectance effect. The light absorption layer serves as a mediator between the conductive layers and the external environment, selectively eliminating unwanted light reflection while preserving the conductive layers' sensing function.
2Use of energy by moving object
If the conductive layers are made with mesh openings to improve light transmission, then the light emission efficiency is improved, but the structural integrity and reflectance control become more difficult
Solution Approach 1:
The patent applies the nested doll principle by placing the light absorption layer inside the recessed portions of the conductive layers. The recessed portions are formed within the existing conductive layer structure, and the light absorption layer is nested within these recesses. This nested configuration allows the system to maintain mesh openings for light transmission while adding the light absorption function within the structural framework, thereby improving light emission efficiency without proportionally increasing overall structural complexity.
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 solution effectively reduces the reflectance of external light, enhancing the visibility of the display panel and improving the overall performance of the display device.
Implementation Method 1
the input sensor further includes a light absorption layer disposed in the recessed portion
Data Source
AI summary
A display device includes a display panel including a light emitting area and a non-light-emitting area adjacent to the light emitting area and an input sensor disposed on the display panel. The input sensor includes a first sensor conductive layer disposed on the display panel, a first sensor insulating layer disposed on the first sensor conductive layer, and a second sensor conductive layer disposed on the first sensor insulating layer. At least one of the first sensor conductive layer and the second sensor conductive layer is provided with a mesh opening defined therethrough, at least one of a side surface of the first sensor conductive layer and a side surface of the second sensor conductive layer is provided with a recessed portion defined therein, and the input sensor further includes a light absorption layer disposed in the recessed portion.