Split segmented liquid crystal modulator
AssigneeRealD Inc.
InventorsMichael G. Robinson, Terry W. Norton
Life of this patent
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Abstract
Disclosed is a segmented liquid crystal modulator panel apparatus and method for driving the same that overcomes electrical cross-talk associated with capacitive coupling to a common electrode. Each modulator segment may be divided into subsegments and driven substantially synchronously and out-of-phase. The field-polarity insensitive LC materials yield a substantially identical optical response for each subsegment, while allowing current on the common electrode to flow between the subsegments, thereby reducing power consumption and decreasing response times.
Claims19
A segmented polarization control panel, comprising:
- a first subsegment of a first segment of a segmented polarization control panel;
- and
- a second subsegment of the first segment of the segmented polarization control panel,
- wherein the first subsegment is driven with a first waveform and the second subsegment is driven with a second waveform, further wherein the magnitude of the second waveform is primarily determined from the first waveform and the magnitude of the second waveform is substantially similar in magnitude to the first waveform and opposite in polarity to the first waveform, wherein the first and second waveforms are applied at substantially the same time, further wherein the first and second subsegments are driven to selectively polarize output light.
A method for driving a segmented modulator panel, comprising:
- driving a first subsegment of a first segment of the segmented modulator panel to selectively polarize output light, with an opposite polarity from a second subsegment of the first segment, wherein the first subsegment comprises one of a first row of the first segment and a first column of the first segment, wherein the magnitude of the second waveform is primarily determined from the first waveform and the magnitude of the second waveform is substantially similar in magnitude to the first waveform and opposite in polarity to the first waveform, wherein the first and second waveforms are applied at substantially the same time;
- and
- driving the first segment of the segmented modulator panel substantially synchronously and out of relative phase with a second segment of the segmented modulator panel.
A segmented modulator panel, comprising:
- a first segment of the segmented modulator panel;
- and
- a second segment of the segmented modulator panel, wherein the first and second segments of the segmented modulator panel are driven substantially synchronously to selectively polarize output light, wherein the magnitude of the second waveform is primarily determined from the first waveform and the magnitude of the second waveform is substantially similar in magnitude to the first waveform and opposite in polarity to the first waveform, wherein the first and second waveforms are applied at substantially the same time.
Dependencies are inferred from the claim text.