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US 2003/0151601 A1Published application
Apparatus and method of driving discharge tube lamp and liquid crystal display using the same
AssigneeLG Display Co., Ltd.
InventorsIn Jae Chung, Jong Dae Kim
Life of this patent
Estimating the term…
Abstract
A burst mode inverter that drives a discharge tube lamp in a manner that produces more emissions. A DC power supplier produces DC power. An inverter converts that DC power to AC power having a Pulse Width Modulated frequency that is between 2 and 3 times the system's frame frequency. A duty cycle controller controls the duty-on-time of the Pulse Width Modulation frequency so as to be with the range of about 40% to 100%.
Claims13
A driving apparatus having a discharge tube lamp, comprising:
- a DC power supplier for producing DC power;
- an inverter for converting the DC power to AC power, wherein the inverter responds to a Pulse Width Modulation frequency to modulate the DC power to produce the AC power;
- and
- a controller for generating the Pulse Width Modulation frequency such that the Pulse Width Modulation frequency has a duty-on-time between about 40% to 100%.
1 more element
A driving method of a discharge tube lamp, comprising steps of:
- producing DC power;
- generating a Pulse Width Modulation frequency having a duty-on-time between about 40% to 100%;
- and
- utilizing the Pulse Width Modulation frequency to convert the DC power into AC power to be applied to the discharge tube lamp.
1 more element
A liquid crystal display, comprising:
- a liquid crystal display panel;
- a DC power supplier for producing DC power;
- an inverter for converting the DC power to AC power, wherein the inverter responds to a Pulse Width Modulation frequency to modulate the DC power to produce the AC power;
- a controller for generating the Pulse Width Modulation frequency such that the Pulse Width Modulation frequency has a duty-on-time between about 40% to 100%;
- and
- at least one discharge tube which turns on in accordance with the AC power supplied from the inverter to irradiate light to the liquid crystal display panel.
3 more elements
Dependencies are inferred from the claim text.