LIQUID CRYSTAL DISPLAY DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Sep 13, 2012
app pub date -
Mar 2, 2012
filing date -
Mar 7, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

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Non-US Coverage
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Abstract
The liquid crystal display device is a display device, having; a display panel; a backlight having light emitting diode columns; and an LED driver IC for driving the light emitting diode columns, wherein the light emitting diode columns are formed of a number of light emitting diodes, the LED driver IC controls the voltage applied to said light emitting diode columns so that the current that flows through a light emitting diode column and is inputted into the LED driver IC is a predetermined constant current, the display device further has a current amplifying unit for amplifying the reference current inputted into the LED driver IC and allowing the amplified reference current to flow through a light emitting diode column, and the current inputted into the LED driver IC and the current amplified by the current amplifying unit flow through a light emitting diode column.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
HITACHI DISPLAYS LTD | CHIBA COUNTY JAPAN CHIBA |
International Classification(s)

- 2012 Application Filing Year
- H05B Class
- 2647 Applications Filed
- 2118 Patents Issued To-Date
- 80.02 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
TAKAHASHI, Satoshi | Isumi, JP | 385 | 4847 |
# of filed Patents : 385 Total Citations : 4847 | |||
Tanaka, Satoshi | Chiba, JP | 959 | 10603 |
# of filed Patents : 959 Total Citations : 10603 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- H05B Class
- 6.86 % this patent is cited more than
- 13 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
Full Text

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