Electrophoretic Display Sensor Layout for Narrow-Bezel Sensing
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Solution Overview
Problem
It is challenging to integrate sensors with electrophoretic display devices while minimizing bezel size, as existing technologies struggle to accommodate both display and sensor components on the same plane.
Innovation Solution
An electrophoretic display device with a built-in sensor is designed, where the sensor is disposed beneath the display module, allowing it to sense external environments by incorporating a sensing path through which measurement media can pass, and a controller controls the display and sensor operations to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is disposed on the same plane as the display module, then the sensor can sense external environment, but the bezel size increases and device compactness deteriorates
Solution Approach 1:
The sensor is moved from the same plane as the display module to a position beneath the display module, utilizing the third dimension (depth/vertical space) to resolve the spatial conflict. This allows the sensor to maintain its sensing capability while the display area can extend to the edges of the device without requiring additional bezel space.
Solution Approach 2:
The sensor is integrated into the structure beneath the display module, with the sensing path passing through the display module structure itself. This nesting approach allows the sensor to be housed within the existing device footprint without requiring additional external space or increasing bezel size.
2Measurement precision
If a sensing path is created through the display module, then the sensor can sense external environment, but the display structure becomes more complex
Solution Approach 1:
The display module structure serves dual functions: it maintains its primary display function while simultaneously providing a sensing path for the sensor beneath it. The same structural elements (electrodes, encapsulation layers) that form the display also create the optical or measurement path for the sensor, eliminating the need for separate sensing structure components.
Solution Approach 2:
The sensing path is integrated into the existing display module structure rather than being added as a separate component. The encapsulation layers and electrode structures of the display module are configured to also serve as the sensing path, merging the display and sensing functions into a unified structure.
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 enables real-time sensing capabilities without obstructing the display, allowing for a minimized electronic appliance design by integrating sensors beneath the display without requiring additional space or a thick bezel.
Implementation Method 1
An electrophoretic display device may display information by moving colored particles in accordance with an electric field such that the colored particles reflect light incident from outside
Implementation Method 2
the sensor being configured to sense an incidence direction of the light incident from the outside
Data Source
AI summary
An electrophoretic display device with a built-in sensor includes an electrophoretic type display module configured to display information through reflection of light incident from outside by particles moved by an electric field. The electrophoretic display device also includes a built-in sensor disposed within a display area configured to display information in the display module. The built-in sensor is configured to sense an incidence direction of the light incident from the outside. The electrophoretic display device further includes a controller configured to control the electrophoretic type display module and the built-in sensor.