Backlight Display Assembly With Micro-Nano Spectrum Splitting
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Solution Overview
Problem
Backlight display technologies, such as LCDs, suffer from low light utilization, with over 90% of light not being used due to significant losses through polarization and color filters, limiting display brightness and increasing power consumption.
Innovation Solution
Incorporating a spectrum splitting layer with micro-nano structures between the backlight layer and the light filter layer to separate and converge optical signals based on frequency, ensuring they reach the appropriate color filters, thereby improving light utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional LCD structure with polarization filters and color filters is used, then the display can function with standard components, but light utilization is low (less than 5.6% of backlight intensity)
Solution Approach 1:
The patent segments the optical path by introducing a spectrum splitting layer that divides the broad spectrum backlight into different wavelength ranges. This segmentation allows each wavelength range to be directed to appropriate color filters, reducing the waste of light that occurs in conventional single-path LCD structures.
Solution Approach 2:
The spectrum splitting layer acts as an intermediary component between the backlight layer and the color filters. It mediates the optical interaction by selectively directing different wavelengths to corresponding color filters, thereby improving light utilization without requiring fundamental changes to the existing LCD architecture.
2Productivity
If more light is directed to the correct color filters through spectrum splitting, then light utilization improves, but the device structure becomes more complex
Solution Approach 1:
The patent introduces a new dimensional approach by using a spectrum splitting layer that operates in the wavelength dimension. This allows the system to sort light by wavelength before it reaches the color filters, improving transmission efficiency without significantly increasing the spatial complexity of the device structure.
3Illumination intensity
If conventional color filters are used without spectrum splitting, then the device structure remains simple, but display brightness is limited due to light loss
Solution Approach 1:
The spectrum splitting layer performs preliminary action by pre-sorting the backlight spectrum into appropriate wavelength ranges before the light reaches the color filters. This preliminary spectral organization ensures that each color filter receives optimized spectral input, thereby improving display brightness and reducing light loss.
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
Significantly enhances backlight utilization by ensuring more light reaches the correct filters, improving display brightness and reducing power consumption.
Implementation Method 1
The spectrum splitting layer includes a micro-nano structure including a plurality of strip structures... The micro-nano structure is configured to: separate an optical signal of a first frequency from the optical signal sent by the backlight layer, and converge the optical signal of the first frequency onto a first light filter
Data Source
AI summary
A backlight display assembly and an apparatus on which the backlight display assembly is deployed are disclosed, to effectively improve light utilization of the backlight display assembly. The backlight display assembly includes a light filter layer, a spectrum splitting layer, and a backlight layer. The light filter layer includes a plurality of light filter units, and each light filter unit includes a plurality of different light filters. The spectrum splitting layer is disposed on one side of the light filter layer, and the spectrum splitting layer and the light filter layer are spaced from each other. The spectrum splitting layer includes a micro-nano structure including a plurality of strip structures, and an arrangement direction of the plurality of strip structures is consistent with an arrangement direction of the plurality of different light filters.