US Patent No: 6,777,255
Number of patents in Portfolio can not be more than 2000
Electro-optical device and manufacturing method thereof
Stats
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Aug 17, 2004
Issued date -
Oct 29, 2002
filing date -
10/282,689
serial no -
In Force
status
Importance
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Abstract
An electro-optical device having high operation performance and reliability, and a manufacturing method thereof. A TFT structure which is strong agains hot carrier injection is realized by disposing a Lov region 207 in an n-channel TFT 203 which forms a driver circuit. Further, Loff regions 217 to 220 and offset region are disposed in an n-channel TFT 304 which forms a pixel section, and a TFT structure of low OFF current value is realized. Further, by reducing the n-type impurity element contained in Loff regions 217 to 220 to approximately 1.times.10.sup.16 to 5.times.10.sup.18 atoms/cm.sup.3, further reduction of OFF current can be performed.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,543,947 Method of driving an LCD employing an active matrix with short pulses for gray scale | 47 | 1994 | |
| 5,686,328 Semiconductor device and process for fabricating the same | 137 | 1994 | |
| 5,594,569 Liquid-crystal electro-optical apparatus and method of manufacturing the same | 323 | 1994 | |
| 5,581,092 Gate insulated semiconductor device | 108 | 1994 | |
| 5,643,826 Method for manufacturing a semiconductor device | 1143 | 1994 | |
| 5,923,962 Method for manufacturing a semiconductor device | 814 | 1995 | |
| 5,903,249 Method for driving active matrix display device | 54 | 1995 | |
| 6,166,414 Electronic circuit | 151 | 1999 | |
| 6,306,694 Process of fabricating a semiconductor device | 123 | 2000 | |
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| 5,917,563 Liquid crystal display device having an insulation film made of organic material between an additional capacity and a bus line | 91 | 1996 | |
| 5,841,170 Field effect transistor and CMOS element having dopant exponentially graded in channel | 74 | 1997 | |
| 5,923,961 Method of making an active matrix type display | 47 | 1997 | |
| 6,635,521 CMOS-type semiconductor device and method of fabricating the same | 20 | 1999 | |
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| 5,247,190 Electroluminescent devices | 909 | 1990 | |
| 5,399,502 Method of manufacturing of electrolumineschent devices | 473 | 1993 | |
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| 5,604,139 Method for manufacturing a semiconductor device | 11 | 1995 | |
| 5,644,146 Thin film transistor | 17 | 1995 | |
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| 5,532,175 Method of adjusting a threshold voltage for a semiconductor device fabricated on a semiconductor on insulator substrate | 62 | 1995 | |
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| 6,542,137 Display device | 35 | 1998 | |
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| 5,767,930 Active-matrix liquid crystal display and fabrication method thereof | 125 | 1997 | |
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| 5,543,340 Method for manufacturing offset polysilicon thin-film transistor | 51 | 1994 | |
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 | Feb 17, 2016 |
| 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 |