Reflective Electrode Display with Light-Transmitting Conductive Layer
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Solution Overview
Problem
There is a need for a display device that consumes less power in bright external environments while improving display quality in environments where sufficient brightness is not secured, as existing technologies struggle to balance power consumption and display quality across different lighting conditions.
Innovation Solution
The display device incorporates a matrix array substrate with reflective electrodes and a light-transmitting conductive layer that overlaps with reflective electrodes, along with a counter substrate and a backlight, allowing for both reflective and transmissive display modes to enhance luminance and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If reflective electrodes are used to reduce power consumption in bright environments, then power consumption is reduced, but display quality deteriorates in low-brightness environments
Solution Approach 1:
The display device is designed to operate in both reflective display mode and transmissive display mode, making it universally adaptable to different lighting conditions. The same display structure can switch between using ambient light (reflective mode for power saving) and backlight illumination (transmissive mode for brightness), eliminating the need to choose between power consumption and display quality based on environment
Solution Approach 2:
The display device dynamically switches between reflective and transmissive modes based on ambient lighting conditions. This dynamic operation allows the system to optimize power consumption in bright environments while ensuring adequate display brightness in low-brightness environments, resolving the contradiction between these two requirements
2Illumination intensity
If transmissive display mode is used to improve display brightness, then luminance is improved, but power consumption increases
Solution Approach 1:
The display device incorporates both reflective and transmissive display capabilities in a single structure, allowing it to universally adapt to different usage scenarios. Users can select the appropriate mode (transmissive for brightness, reflective for power saving) based on their specific needs and environmental conditions
Solution Approach 2:
The system dynamically adjusts its operation mode based on ambient light detection, switching from transmissive mode (higher luminance, higher power consumption) to reflective mode (lower luminance, lower power consumption) when appropriate, thereby optimizing the balance between display quality and energy efficiency
3Illumination intensity
If a light-transmitting conductive layer is added to enable transmissive mode, then display quality in low-brightness environments is improved, but device complexity increases
Solution Approach 1:
The light-transmitting conductive layer serves dual purposes: it acts as an electrode for electrical connection while simultaneously functioning as a transparent conductor that allows backlight light to pass through in transmissive mode. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity
Solution Approach 2:
The patent combines the electrode function and the light transmission function into a single integrated layer. The light-transmitting conductive layer merges the electrical conduction role with the optical transmission role, eliminating the need for separate transparent electrode structures and reducing overall device complexity
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
This configuration improves luminance in low-brightness environments and reduces power consumption in bright conditions by effectively utilizing both ambient light and backlight illumination, enhancing overall display quality and efficiency.
Implementation Method 1
array substrate comprising reflective electrodes arrayed in a matrix
Implementation Method 2
light-transmitting conductive layer at least partially overlapping any one of the reflective electrodes
Data Source
AI summary
According to an aspect, a display device includes: an array substrate comprising reflective electrodes arrayed in a matrix having a row-column configuration in a first direction and a second direction and a light-transmitting conductive layer at least partially overlapping any one of the reflective electrodes when viewed in a third direction orthogonal to the first direction and the second direction; a counter substrate comprising a common electrode overlapping the reflective electrodes when viewed in the third direction and a color filter including a plurality of colors; and a backlight. The array substrate is disposed between the counter substrate and the backlight. Part of the light-transmitting conductive layer protrudes between two reflective electrodes adjacently disposed in the first direction among the reflective electrodes.