Multi-pixel liquid crystal cell array
View Patent ↗A multi-pixel optical processing system includes a multi-pixel liquid crystal cell platform having a deposited metal gasket moisture barrier bonding two opposing substrates each having a spacer layer to accurately control cell gap thickness. A library of specialized pixel constructs is included that can be configured to yield predetermined optical functions at referential locations in the platform. A control system is provided utilizing a time division scheme that multiplexes temperature sensing and heating functions across an optional integrated active thermal element that may be integrated inside the liquid crystal platform. A calibration process characterizes the profile of the cell and generates a polynomial regression formula that provides the voltage drive output for all pixels in the platform based on the platform temperature and state of each pixel.
1. A multi-pixel liquid crystal cell platform, comprising:
A first substrate having a first electrode layer patterned with multiple pixels, and a first alignment layer,
a second substrate placed in opposition to the first substrate and having a second electrode and second alignment layer,
liquid crystals coupled between the first and second substrates,
a spacer element coupled between the first and second substrates,
A metal gasket element bonded to the first and second substrates,
wherein at least one pixel is a photovoltaic tap pixel.
2. A multi-pixel liquid crystal cell platform, comprising:
A first substrate having a first electrode layer patterned with multiple pixels, and a first alignment layer,
a second substrate placed in opposition to the first substrate and having a second electrode and second alignment layer,
liquid crystals coupled between the first and second substrates,
a spacer element coupled between the first and second substrates,
A metal gasket element bonded to the first and second substrates,
wherein at least one pixel is a polarization beam splitter/combiner pixel capable of functioning as a polarization independent variable optical attenuator.
3. A multi-pixel liquid crystal cell platform, comprising:
A first substrate having a first electrode layer patterned with multiple pixels, and a first alignment layer,
a second substrate placed in opposition to the first substrate and having a second electrode and second alignment layer,
liquid crystals coupled between the first and second substrates,
a spacer element coupled between the first and second substrates,
A metal gasket element bonded to the first and second substrates,
wherein at least one pixel is a Faraday rotator pixel capable of functioning as a polarization dependent variable optical attenuator with integrated isolator.
4. A multi-pixel liquid crystal cell platform, comprising:
A first substrate having a first electrode layer patterned with multiple pixels, and a first alignment layer,
a second substrate placed in opposition to the first substrate and having a second electrode and second alignment layer,
liquid crystals coupled between the first and second substrates,
a spacer element coupled between the first and second substrates,
A metal gasket element bonded to the first and second substrates,
wherein the first or second substrate further includes a sub wavelength optical element or nanostructure grating,
wherein the sub wavelength optical element is configured to operate in a capacity selected from the group consisting of polarization rotation, polarization filtration, beam splitting, polarization beam splitting, polarization beam combining, and waveguide.
5. A multi-pixel liquid crystal cell platform, comprising:
A first substrate having a first electrode layer patterned with multiple pixels, and a first alignment layer,
a second substrate placed in opposition to the first substrate and having a second electrode and second alignment layer,
liquid crystals coupled between the first and second substrates,
a spacer element coupled between the first and second substrates,
A metal gasket element bonded to the first and second substrates,
An active thermal element disposed between the first and second substrates,
further including a microcontroller that reads the temperature value of the cell and computes the temperature compensated voltage drive based on a stored regression profile of the cell operating characteristics across voltage.
6. A multi-pixel liquid crystal cell platform, comprising:
A first substrate having a first electrode layer patterned with multiple pixels, and a first alignment layer,
a second substrate placed in opposition to the first substrate and having a second electrode and second alignment layer,
liquid crystals coupled between the first and second substrates,
a spacer element coupled between the first and second substrates,
A metal gasket element bonded to the first and second substrates,
An active thermal element disposed between the first and second substrates, and
at least one VIA formed between the metal gasket element and first or second electrode.
7. A multi-pixel liquid crystal cell platform, comprising:
A first substrate having a first electrode layer patterned with multiple pixels, and a first alignment layer,
a second substrate placed in opposition to the first substrate and having a second electrode and second alignment layer,
liquid crystals coupled between the first and second substrates,
a spacer element coupled between the first and second substrates,
A metal gasket element bonded to the first and second substrates
An active thermal element disposed between the first and second substrates, and
at least one VIA formed between the active thermal element and the metal gasket element.