Semi-reflective display with rectifying antenna arrays for low power consumption
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Solution Overview
Problem
Battery life in portable electronic devices is significantly reduced due to high power consumption by LCD displays, with most light being absorbed by the display films and filters, limiting the efficiency of current display technologies.
Innovation Solution
A low-power semi-reflective display design utilizing pixel-sized visible light rectifying antenna arrays, where each pixel consists of four sub-pixels with individually controlled TFT-tunnel diode logic, and two layers of collinear light frequency antennas, allowing for efficient light absorption and amplification, and electric power generation or consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LCD display backlights are used to illuminate the display, then the display can show images, but 97% of the generated light is absorbed by the films and filters in the display itself, resulting in high power consumption
Solution Approach 1:
Instead of using a backlight to illuminate the display from behind (conventional approach), the invention uses ambient light reflecting off the display surface to create the image. The display inverts the conventional lighting approach by making the display surface itself reflective rather than transmissive, allowing ambient light to serve as the illumination source and eliminating the need for power-consuming backlights.
Solution Approach 2:
The display uses ambient light from the environment to create images, making the environment itself serve as the light source. This self-service approach allows the display to borrow light from surrounding conditions rather than generating its own light through power-consuming backlights, significantly reducing energy consumption.
2Use of energy by moving object
If e-ink technology is used for display, then power consumption is reduced, but the performance and color display precision are insufficient compared to LCD displays
Solution Approach 1:
The invention combines the reflective low-power characteristic of e-ink displays with the color precision and performance of LCD technology by using a reflective LCD structure. This composite approach integrates the advantages of both technologies: the ambient light reflection capability that reduces power consumption and the LCD's superior color display precision and response performance.
Solution Approach 2:
The invention changes the fundamental operating parameter of the display from transmissive (requiring backlight) to reflective (using ambient light). This parameter change enables the display to achieve low power consumption like e-ink while maintaining the color precision and performance characteristics of LCD technology through the reflective LCD architecture.
3Measurement precision
If conventional LCD displays are used, then color display precision is maintained, but battery life is significantly reduced due to high power consumption
Solution Approach 1:
The invention inverts the conventional LCD backlight illumination approach by using a reflective display surface that bounces ambient light back to the viewer. This inversion eliminates the power-consuming backlight while preserving the LCD's color precision through the use of reflective color filters and liquid crystal modulation of ambient light.
Solution Approach 2:
The display utilizes ambient light from the environment to create images, making the surrounding environment serve as the illumination source. This self-service mechanism eliminates the need for power-consuming backlights while maintaining color display precision through the reflective LCD architecture, thereby extending battery life.
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 reduces power consumption by enabling efficient light absorption and amplification, extending battery life and allowing portable devices to potentially remain powered without external recharging, with the display capable of self-recharging and dynamic brightness adjustment based on ambient light.
Implementation Method 1
pixel sized visible light rectifying antenna arrays... light absorbing solar array, when biased to generate electricity
Implementation Method 2
light amplifying, when biased to use electricity... consuming electric power to amplify one of four different colors of light
Implementation Method 3
ultra-high-speed rectifying tunnel diodes... TFT-tunnel diode logic
Data Source
AI summary
A semi-reflective display and a method for fabricating and assembling a semi-reflective display are presented, where the display may be comprised of visible light rectifying antenna arrays tuned to four different colors, which when forward biased may use electric power to amplify reflected colored light, and when reversed biased may generate electric power by absorbing light. TFT-tunnel diode logic may be used to control each sub-pixel.