E-ink Camera Status Indicator for Narrow Bezel Displays
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Solution Overview
Problem
Conventional display devices with embedded cameras face challenges in minimizing bezel width, which affects the ability to stack multiple displays seamlessly, and pop-up camera mechanisms increase thickness and complexity, making them unsuitable for compact devices.
Innovation Solution
Incorporating a camera passthrough section in the display panel with a thin-film transistor layer and an electronic ink reservoir that changes color based on electrical stimuli to indicate the camera's on/off state, allowing the camera to be housed behind the display panel without protruding, thus maintaining a narrow bezel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the camera is housed behind the display panel without protruding, then the bezel width is minimized and displays can be stacked seamlessly, but the camera status indication becomes less visible
Solution Approach 1:
The patent employs an electronic ink reservoir that changes color based on electrical stimuli to indicate the camera's on/off state. The ink can present a first color when the camera is off and a second color when the camera is on, providing clear visual status indication within the narrow bezel area without requiring the camera to protrude.
Solution Approach 2:
The patent adds a temporal dimension to the status indication by using color transitions over time. The electronic ink layer provides dynamic color changes that convey camera status information, transforming a static spatial indication problem into a dynamic temporal visualization solution within the constrained bezel space.
2Shape
If a pop-up camera mechanism is used, then the camera can be hidden when not in use, but the device thickness and mechanical complexity increase
Solution Approach 1:
The patent replaces the mechanical pop-up camera system with an electronic solution. Instead of using motors, springs, and mechanical linkages to retract the camera, the invention uses an electronic ink layer that changes color electronically to indicate camera status, eliminating complex mechanical components while achieving the same visual concealment effect.
Solution Approach 2:
The patent changes the physical state of the electronic ink from one color configuration to another based on electrical stimuli. This parameter change (color state) replaces the physical movement (retraction) of a mechanical system, providing a simpler, solid-state solution that maintains camera concealment without mechanical complexity.
3Volume of moving object
If the camera is embedded behind the display panel, then the device maintains a compact form factor, but the camera status must be indicated within limited space
Solution Approach 1:
The patent uses color changes in the electronic ink layer to maximize the information density within the limited status indication area. By utilizing distinct colors to represent different camera states, the system effectively communicates status information in a compact space that would be insufficient for traditional text or icon-based indicators.
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
Enables seamless stacking of displays without visual artifacts and maintains a compact form factor by housing the camera behind the display panel, reducing mechanical complexity and cost while providing a clear indication of the camera's status through color changes.
Implementation Method 1
an electronic ink configured under a first electrical stimulus to present a first color and under a second electrical stimulus to present a second color
Data Source
AI summary
An LCD panel includes a thin-film transistor layer having a first portion to provide an image on the LCD panel, and a second portion. An electronic ink reservoir is located proximate to the second portion of the thin-film transistor layer and includes an electronic ink configured under a first electrical stimulus to present a first color and under a second electrical stimulus to present a second color. The LCD panel directs the second portion of the thin-film transistor layer to provide the first electrical stimulus to the electronic ink reservoir in response to the LCD panel being in a first state, and directs the second portion of the thin-film transistor layer to provide the second electrical stimulus to the electronic ink reservoir in response to the LCD panel being in a second state.