Dual-Mode Display Panel Switching Between Transmissive and Emissive Modes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices using light-emitting elements suffer from reduced visibility in bright light conditions due to small brightness differences between light-emitting and non-light-emitting pixels, and they consume high power, which is a concern for wearable displays and applications requiring low power consumption.
Innovation Solution
A display panel that combines transmissive and light-emitting elements, allowing for independent control of light emission and transmission, using either single-side or double-side light-emitting elements and transmissive display elements like electrochromic or electrowetting elements, to optimize visibility and power usage based on surrounding light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light-emitting elements are used for display, then visibility in dark places is improved, but visibility in bright light deteriorates and power consumption increases
Solution Approach 1:
The patent implements a dual-mode display system where the display element can dynamically switch between light-emitting mode and transmissive mode based on ambient light conditions. This dynamic adaptability allows the system to optimize visibility and power consumption by selecting the appropriate display mode for the current environment, rather than relying solely on light-emitting elements that consume high power and provide poor visibility in bright light.
2Illumination intensity
If light-emitting elements are used for display, then visibility in dark places is improved, but visibility in bright light deteriorates
Solution Approach 1:
The display system dynamically adjusts its operating mode based on ambient light conditions. In bright light environments, it switches to transmissive display mode where external light passes through the display element, maximizing visibility and eliminating the small brightness difference problem. In dark environments, it switches to light-emitting mode to provide sufficient brightness for visibility.
3Use of energy by moving object
If transmissive display elements are used, then power consumption is reduced and external light utilization is improved, but visibility in low external light conditions deteriorates
Solution Approach 1:
The system implements adaptive mode switching that monitors ambient light conditions and automatically selects the optimal display mode. When external light is sufficient, transmissive mode is activated to minimize power consumption. When external light becomes insufficient, the system automatically switches to light-emitting mode to maintain visibility, thus dynamically optimizing both power consumption and visibility based on environmental conditions.
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 display panel achieves high visibility and low power consumption by switching between transmissive and light-emitting elements based on ambient brightness, ensuring clear image display in various lighting conditions and reducing power consumption, particularly in wearable applications.
Implementation Method 1
Light-emitting elements utilizing electroluminescence (also referred to as an EL element) have features of the ease to thinning and lightening, high-speed response to input signal, driving with a direct-current low voltage source
Implementation Method 2
a plurality of transmissive display elements that can be driven independently. The display panel can use a transmissive display element and a light-emitting element to display an image
Data Source
AI summary
A display panel can display images or information on at least one surface side and transmit external light through a transmissive display element. The display panel includes a plurality of light-emitting elements that emit light to the one surface side and can be driven independently and a plurality of transmissive display elements that can be driven independently. Alternatively, a display panel transmits external light through a double-side light-emitting element and a transmissive display element. The display panel includes a plurality of double-side light-emitting elements that can be driven independently and a plurality of transmissive display elements that can be driven independently.