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US 2011/0298767 A1Published application
Liquid crystal displays
OwnerMike O'Callaghan, Cory Pecinovskyinventors
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Abstract
Electronic apparatus, systems, and methods to operate a liquid crystal display provide a mechanism that can be used to address image sticking on the display. The mechanism may be provided in the form of an arrangement of a liquid crystal and an insulating material, where the arrangement has a decay time constant that is comparable to or less than a maximum time visually acceptable for image sticking to persist. Additional apparatus, systems, and methods are disclosed.
Claims35
An apparatus comprising:
- a liquid crystal display including a liquid crystal coupled to a structure having an insulating material such that combination of the liquid crystal and the insulating material has a decay time constant less than or equal to a maximum time visually acceptable for image sticking to persist on the liquid crystal display.
An apparatus comprising:
- an array of pixels on a substrate;
- and
- a ferroelectric liquid crystal arranged between two alignment layers in an electrical circuit with a pixel of the array, the arrangement of the ferroelectric liquid crystal and the two alignment layers having a decay time constant relative to operation in the electrical circuit such that the decay time constant is comparable to or less than a maximum time visually acceptable for image sticking to persist on a display.
An apparatus comprising:
- a substrate;
- an array of pixels on the substrate;
- a first alignment layer above the array;
- a ferroelectric liquid crystal on the first alignment layer;
- a second alignment layer on the ferroelectric liquid crystal;
- and
- a conductor coupled to the second alignment layer, the conductor arranged to operatively apply a signal across the first alignment layer and the second alignment layer with the ferroelectric liquid crystal arranged between the first alignment layer and the second alignment layer, the arrangement of the ferroelectric liquid crystal and the two alignment layers having a decay time constant relative to operation with a pixel of the array, the decay time constant less than or equal to a maximum time visually acceptable for image sticking to persist on a display.
4 more elements
A method of forming a ferroelectric liquid crystal display comprising
- disposing a ferroelectric liquid crystal above an array of pixels on a substrate, the ferroelectric liquid crystal having an electrical resistivity;
- and
- disposing an alignment layer above the ferroelectric liquid crystal, the alignment layer having a capacitance, wherein the ferroelectric liquid crystal arranged with the alignment layer has a decay time constant relative to operation in a circuit such that the decay time constant is less than or equal to a maximum time visually acceptable for image sticking to persist on a display.
A method comprising:
- applying a drive waveform to a liquid crystal display, the liquid crystal display having an associated decay time constant relative to operation in a circuit such that the decay time constant is less than or equal to a maximum time visually acceptable for image sticking to persist on the liquid crystal display.
Dependencies are inferred from the claim text.