Polarising photovoltaic module built into the screen of an electronic display device
A display device, polarized light technology, used in photovoltaic power generation, circuits, optics, etc., can solve problems such as weak performance
Inactive Publication Date: 2017-08-01
SUNPARTNER TECH
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Problems solved by technology
The performance achieved today is very weak with a conversion efficiency of 0.2% and an extinction coefficient of around 5, which confirms the concept but is still unacceptable for integration in screens
Method used
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[0043] Reference Figure 1a with Figure 1b , Which schematically shows a cross-sectional view of a part of a display device according to the present invention, called a polarization photovoltaic module 18. The polarized photovoltaic module 18 includes a plurality of photovoltaic active regions 1, in which two adjacent photovoltaic active regions 1', 1" form a hole 2, and a plurality of semi-reflective and parabolic polarizers 4. The size is generally controlled The polarizer 4 is arranged at the interface between two transparent material layers 7, 8, which ideally have the same or very close refractive index, In order to limit the total reflection of light passing through the interface.
[0044] As in Figure 1a As indicated above, the polarizer 4 reflects the first linear polarization component 5'of the ambient light 5 (thus unpolarized before reaching the device) emitted by an artificial or natural light source outside the device and makes it orthogonal to the first component ...
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Abstract
The invention relates to a display device provided with a polarising photovoltaic module which includes at least: (a) a plurality of polarisers (4); (b) a plurality of pixels (3) which emit or transmit light referred to as image light (6); (c) a plurality of photovoltaic active zones (1) and a plurality of openings (2), two adjacent photovoltaic active zones (1', 1") forming an opening (2) and said photovoltaic active zones being arranged between the pixels (3) and the polarisers (4); said device being characterised in that said polarisers (4) are semi-reflective and are made up of one or more surfaces selected among planar surfaces, which are concave or convex, and have parabolic, conical, pyramidal, tetrahedral, semi-cylindrical or cylindrical-parabolic shapes, said polarisers (4) being arranged so as to concentrate, by reflection, a first linear polarised component (P1) of the ambient light (5') onto said photovoltaic active zones (1), as well as to transmit, through the polarising photovoltaic module, a second linear polarised component (P2) of the ambient light (5") or of the image light (6').
Description
Technical field [0001] The present invention relates to an emissive, reflective or transflectif screen forming part of an electronic display device that includes one or more polarizers and integrates a translucent photovoltaic module. Background technique [0002] In the present invention, what is called a display device is equipped with a suitable guide mechanism that enables light and / or ambient light (reflective and transflective screens) generated by the device (emissive screen) to pass through An electronic device that displays a screen that emits messages or images. [0003] Most of these screens are liquid crystal or electroluminescent screens that generally contain one or two polarizers. The two performance criteria of the polarizer are on the one hand to maximize the transmittance of the first linear polarization component of incident light and on the other hand to maximize the extinction coefficient, that is, between the first and second linear polarization components (w...
Claims
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IPC IPC(8): G02F1/1335H01L31/054
CPCH01L31/0547G02F1/133524G02F1/13324G02F1/133548H10K59/8793G02B19/0042Y02E10/52G02B27/285G02B5/3058G02F1/133618H10K65/00H10K50/868H01L31/0475G02F1/133528G02F1/1336H01L27/156H01L33/58
Inventor B.克扎比C.沙帕
Owner SUNPARTNER TECH