Patterned Panel Spectral Multiplexing for Miniaturized Displays
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Solution Overview
Problem
Conventional display devices with patterned panels require a large area to display various patterns and colors, which is inefficient in terms of size and design, especially with the trend towards miniaturization in electronic products.
Innovation Solution
A display device with a patterned panel and a light emitting module, where the panel includes multiple light-transmitting portions with specific transmission spectra and overlapping areas, allowing multiple figures to be displayed in the same area by using light emitting units with different peak wavelengths, enabling efficient miniaturization and color variety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple characters or images are printed on the patterned panel to provide variety, then display variety is improved, but the area required increases
Solution Approach 1:
The patent introduces spectral dimension by using light-transmitting portions with different transmission spectra (first, second, third spectra with different wavelength ranges). This allows multiple display contents to be encoded in the same spatial area by assigning them to different spectral bands, effectively moving from 2D spatial arrangement to 3D spectral-spatial encoding
Solution Approach 2:
The patterned panel is segmented into multiple light-transmitting portions (first, second, third portions) with distinct transmission spectra. Each portion can independently transmit specific wavelength ranges, allowing simultaneous display of multiple different contents in overlapping or adjacent regions without spatial interference
2Area of stationary object
If the patterned panel is miniaturized to meet lightweight and thin trends, then device size is reduced, but the ability to display multiple patterns and colors in the same area becomes more difficult
Solution Approach 1:
By utilizing the spectral dimension (wavelength range) as an additional degree of freedom, the patent enables multiple display contents to coexist in the same miniaturized spatial area. The first, second, and third light-transmitting portions transmit different wavelength ranges, allowing spectral multiplexing that maintains high display capability while reducing physical panel size
Solution Approach 2:
The patent changes the optical parameters of the light-transmitting portions by assigning different transmission spectra to each portion. This parameter differentiation (wavelength selectivity) allows multiple patterns and colors to be displayed simultaneously in a compact area, as each portion responds selectively to specific wavelength ranges from the light emitting units
3Adaptability or versatility
If white inks with diffusing particles are used for printing, then color variety is limited to the light source color, but manufacturing is simplified
Solution Approach 1:
Different regions of the patterned panel (first, second, third light-transmitting portions) are assigned different transmission spectrum characteristics. This local quality differentiation enables each region to selectively transmit specific wavelengths, creating color variety through spectral filtering rather than relying solely on the light source color or complex multi-layer ink structures
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 allows for the display of multiple figures in a smaller area with improved color accuracy and richness, effectively addressing the size and design inefficiencies of conventional devices.
Implementation Method 1
a first light emitting unit and a second light emitting unit, wherein a peak wavelength light of the first emitting unit is selected from 400 nm to 550 nm and from 600 nm to 660 nm, a peak wavelength light of the second light emitting unit is from 500 nm to 580 nm
Implementation Method 2
a first light-transmitting portion having a first transmission spectrum; a second light-transmitting portion disposed on the first light-transmitting portion and having a second transmission spectrum; and a third light-transmitting portion disposed on the second light-transmitting portion and having a third transmission spectrum
Data Source
Figure 1A~1B
Figure 2A
Figure 2B
AI summary
A display device includes a patterned panel (2) and a light emitting module (1), and the patterned panel (2) includes: a light-transmitting substrate (S), a first light-transmitting portion (21), a second light-transmitting portion (22) and a third light-transmitting portion (23). Each of the light-transmitting portions respectively has a first transmission spectrum, a second transmission spectrum and a third transmission spectrum, in which the third light-transmitting portion (23) is adjacent to the first light-transmitting portion (21) and the second light-transmitting portion (22), and the third transmission spectrum has a first overlapping part with the first transmission spectrum, and has a second overlapping part with the second transmission spectrum. The light emitting module (1) includes a first light emitting unit (11) and a second light emitting unit (12), the first light emitting unit (11) emits a first light having a peak wavelength in the first overlapping part, and the second light emitting unit (12) emits a second light having a peak wavelength in the second overlapping part.