E-Ink Overlay Module for Digital Display Brightness Enhancement
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Solution Overview
Problem
Digital displays, such as LCD panels, suffer from reduced readability due to ambient bright light or strong glare, which washes out the brightness output and results in a low contrast ratio, making content less visible in bright environments.
Innovation Solution
A system comprising an electronic-ink (E-ink) module, a brightness detection module, and a brightness enhancer controller that determines ambient brightness levels and replicates the display content on the E-ink module when the ambient light exceeds a threshold, providing a high contrast ratio and enhancing visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the backlight intensity is increased to improve visibility in bright environments, then the display brightness is improved, but the energy consumption increases
Solution Approach 1:
The patent uses an E-ink module to create a physical copy of the display content shown on the digital display. This copy is then overlaid on the digital display to enhance visibility. The E-ink module reflects ambient light to provide high-contrast content without requiring additional backlight energy, thus solving the contradiction between visibility and energy consumption.
Solution Approach 2:
The system combines two different display technologies - a digital display (LCD or similar) and an E-ink module - into a composite display system. The digital display provides the base content while the E-ink module adds high-contrast reflective content on top, creating a composite structure that leverages the strengths of both technologies to improve visibility without proportionally increasing energy consumption.
2Illumination intensity
If an E-ink module is added to enhance brightness, then visibility in bright environments is improved, but the device complexity increases
Solution Approach 1:
The E-ink module is positioned directly over the digital display in a nested configuration, where the thinner E-ink module is layered on top of the existing display structure. This nesting approach integrates the brightness enhancement function within the existing display form factor without requiring a completely separate system, thereby limiting the increase in device complexity.
3Reliability
If the E-ink module is activated continuously to maintain high visibility, then readability is improved, but the energy consumption increases
Solution Approach 1:
The system dynamically controls the E-ink module based on real-time detection of ambient light conditions. The brightness enhancer controller activates the E-ink module only when ambient light exceeds a predetermined threshold, and deactivates it when conditions improve. This dynamic adaptation ensures high readability when needed while minimizing energy consumption during normal viewing conditions.
Solution Approach 2:
The system incorporates a light sensor that continuously monitors ambient light conditions and provides feedback to the brightness enhancer controller. This feedback mechanism enables the system to automatically adjust the E-ink module activation state based on actual environmental conditions, ensuring optimal readability while avoiding unnecessary energy consumption. The controller compares the sensor input against a threshold and accordingly controls the E-ink module power state.
Data Source
AI summary
A system, method, and apparatus provide brightness enhancement for digital displays. The digital display of an electronic apparatus may be augmented with an E-Ink based display module. Embodiments may replicate the content of the digital display shown on the E-Ink module display. The content is shown in a high contrast output that is readable even though the ambient light intensity may overwhelm the readability of the original digital display. Some embodiments include a clock which may trigger automatic operation of the E-Ink module. Some embodiments may include a transparent E-Ink module which may show replicated content obscuring the view an underlying digital display or which may remain transparent when the digital display is readable under the current light.