Light source drive device, display apparatus, and light source drive method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9538627
APP PUB NO 20140218697A1
SERIAL NO

14157925

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A light source drive device includes a supply unit that supplies a high-frequency first drive signal and a second drive signal whose frequency is lower than a frequency of the first drive signal to a discharge lamp which has a pair of electrodes, and a control unit that controls the supply unit so that the first drive signal and the second drive signal of fixed durations are alternately supplied and that controls the supply unit so that the first drive signal is supplied in a case where a voltage between the pair of electrodes is below a threshold.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • SEIKO EPSON CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Suzuki, Junichi Chino, JP 206 2395

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 3, 2024
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 3, 2028
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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