US Patent No: 6,411,420
Number of patents in Portfolio can not be more than 2000
Electro-optical element, and method of driving and method of manufacturing the same
Stats
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Jun 25, 2002
Issued date -
Mar 14, 2000
filing date -
09/424,443
serial no -
Expired
status
Importance
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Abstract
Polarization inversion domains 2 are irregularly formed in a ferroelectric substrate 3 constituting an electro-optical element 1 at least in the propagation direction of a light beam A. An A.C. current signal is applied between electrodes 4 and 5. It is thereby arranged to disturb the phase of each of the light rays constituting a light beam whose coherent characteristic is high, such as a laser light or the like, and thereby to easily obtain the light beam whose coherent characteristic has been decreased.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,495,352 Liquid crystal display device with stripe-shaped unevennesses on the electrodes | 8 | 1993 | |
| 5,552,914 Liquid crystal display having a fine particle-dispersion layer on at least one side of the liquid crystal layer | 3 | 1995 | |
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| 6,064,587 System and method for writing/reading data | 13 | 1999 | |
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| 5,652,674 Method for manufacturing domain-inverted region, optical wavelength conversion device utilizing such domain-inverted region and method for fabricating such device | 29 | 1995 | |
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| 5,640,267 Optical apparatus | 42 | 1995 | |
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| 5,786,926 Electro-optical device having inverted domains formed inside a ferro-electric substrate and electro-optical unit utilizing thereof | 6 | 1996 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 25, 2013 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |