FREQUENCY DIVIDING CIRCUIT, POWER SUPPY CIRCUIT AND DISPLAY DEVICE

A level shifter and a charge pump circuit are added, among cascade-connected unit frequency dividing circuits forming a frequency dividing circuit, to the unit frequency dividing circuit in the first stage. The charge pump circuit boosts an input voltage based on a dot clock signal, and supplies the...

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Bibliographic Details
Main Authors TOBITA YOUICHI, MURAI HIROYUKI, MORI SEIICHIROU
Format Patent
LanguageEnglish
Published 22.09.2006
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
BASIC ELECTRONIC CIRCUITRY
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRICITY
PHYSICS
PULSE TECHNIQUE
SEALS
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Summary:A level shifter and a charge pump circuit are added, among cascade-connected unit frequency dividing circuits forming a frequency dividing circuit, to the unit frequency dividing circuit in the first stage. The charge pump circuit boosts an input voltage based on a dot clock signal, and supplies the booster voltage to the unit frequency dividing circuit in the first stage. The unit frequency dividing circuit in the first stage, which is driven by the booster voltage, attains an improved current driving capability. The improved current driving capability of the unit frequency dividing circuit in the first stage to which the dot clock signal of high frequency is input leads to a widened operating margin of the frequency dividing circuit.
Bibliography:Application Number: KR20060019116