Light Control Pixel Polarization Switching for Mirror Display
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Solution Overview
Problem
Mirror display devices in existing technologies cannot achieve real-time compatibility between mirror and display functions, limiting their functionality to either full display or full mirror states without the ability to switch between the two based on content.
Innovation Solution
A display device comprising a display component with a reflective polarizer, a first polarizer, and a light control component with light control pixels that can switch between states to allow display pixels to emit light for image display or adjust ambient light for a mirror function, enabling real-time switching between display and mirror modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mirror display device uses a reflective polarizer to enable mirror function, then the device can reflect ambient light, but it cannot achieve real-time compatibility between mirror and display functions
Solution Approach 1:
The invention divides the display panel into multiple independent controllable regions (first display region and second display region). Each region can be independently controlled to display images or function as a mirror, allowing simultaneous display and mirror functions in different areas of the same device.
Solution Approach 2:
The invention enables dynamic switching between display and mirror functions in different regions of the display panel. By controlling the light control component, each region can transition between displaying image content and reflecting ambient light in real-time, achieving adaptive functionality.
2Adaptability or versatility
If the display device switches between full display and full mirror states, then the functions are mutually exclusive, but real-time compatibility requires simultaneous operation of both functions
Solution Approach 1:
The display panel is segmented into multiple independently controllable regions, allowing different regions to perform different functions simultaneously. This enables one region to display content while another region acts as a mirror, achieving real-time compatibility without sacrificing functional efficiency.
Solution Approach 2:
The display device achieves multi-functionality by enabling each region to serve dual purposes: displaying image content or reflecting ambient light. This universal capability across different regions allows the device to adapt to various usage scenarios simultaneously.
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 the display device to function as both a mirror and a display simultaneously, allowing positions to be used for image display or mirror functions based on content, improving upon the limitations of existing technologies by achieving real-time compatibility between display and mirror functions.
Implementation Method 1
a reflective polarizer, located on a light emitting side of the display component, having a light transmission axis, and configured to reflect light with a polarization direction perpendicular to a direction of the light transmission axis and allow light with a polarization direction parallel to the direction of the light transmission axis to pass through
Implementation Method 2
each of the light control pixels is configured to switch between a first state and a second state, when the light control pixel is in the first state, external ambient light passing through the first polarizer does not change a polarization state after passing through the light control pixel, and when the light control pixel is in the second state, the external ambient light passing through the first polarizer is adjusted, after passing through the light control pixel, to be linearly polarized light perpendicular to the direction of the light transmission axis of the reflective polarizer
Data Source
AI summary
Disclosed are a display device and a driving method for a display device. The display device includes a display component and a light control component. The light control component has a plurality of light control pixels arranged in an array. Each of the light control pixels at least covers one of the display pixels. Each of the light control pixels is configured to switch between a first state and a second state. When the light control pixel is in the first state, external ambient light that has passed through the first polarizer does not change polarization state after passing through the light control pixel. When the light control pixel is in the second state, external ambient light that has passed through the first polarizer is adjusted, after passing through the light control pixel, to be linearly polarized light perpendicular to the light transmission axis of the reflective polarizer.