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US 2009/0153074 A1Published application
Lamp and driving device for backlight assembly having the same
AssigneeLG Display Co., Ltd.
InventorsJong Ki Ahn, Sung Yong Park
Life of this patent
Estimating the term…
Abstract
A lamp includes first and second glass tube portions for emitting light, respective one ends of the first and second glass tube portions being bent and connected integrally to each other, first and second electrodes respectively formed at respective other ends of the first and second glass tube portions, and a third electrode formed at the bent portion of the first and second glass tube portions.
Claims18
1-6. (canceled)
A device for driving a backlight assembly, comprising:
- A controller for outputting a control signal;
- a switching unit for outputting a DC square wave voltage in response to the control signal;
- an inverter for converting the DC square wave voltage into an AC voltage;
- and
- a lamp for emitting light in response to the AC voltage,
- the lamp including:
- first and second glass tube portions having respective one ends bent and connected integrally to each other;
- first and second electrodes respectively formed at respective other ends of the first and second glass tube portions;
- and
- a third electrode formed at the bent portion of the first and second glass tube portions, wherein the third electrode is grounded.
7 more elements
A device for driving a backlight assembly, comprising:
- a controller for outputting a control signal;
- a switching unit for outputting a DC square wave voltage in response to the control signal;
- an inverter for converting the DC square wave voltage into an AC voltage;
- and
- a lamp for emitting light in response to the AC voltage,
- the lamp including:
- first and second glass tube portions having respective one ends bent and connected integrally to each other;
- first and second electrodes respectively formed at respective other ends of the first and second glass tube portions;
- and
- a third electrode formed at the bent portion of the first and second glass tube portions,
- wherein electrical characteristics of the lamp are detected through the third electrode.
8 more elements
A device for driving a backlight assembly, comprising:
- a controller for outputting a control signal;
- a switching unit for outputting a DC square wave voltage in response to the control signal;
- an inverter for converting the DC square wave voltage into an AC voltage;
- and
- a lamp for emitting light in response to the AC voltage,
- the lamp including:
- first and second glass tube portions having respective one ends bent and connected integrally to each other;
- first and second electrodes respectively formed at respective other ends of the first and second glass tube portions;
- and
- a third electrode formed at the bent portion of the first and second glass tube portions,
- wherein an AC voltage having a phase opposite to a phase of an AC voltage supplied to the first and second electrodes is supplied to the third electrode.
8 more elements
A liquid crystal display device comprising:
- a liquid crystal panel for an image;
- and
- a unit driving a backlight assembly to supply light to the liquid crystal panel,
- the unit including:
- a controller for outputting a control signal;
- a switching unit for outputting a DC square wave voltage in response to the control signal;
- an inverter for converting the DC square wave voltage into an AC voltage;
- and
- a lamp for emitting light in response to the AC voltage,
- the lamp including:
- first and second glass tube portions having respective one ends bent and connected integrally to each other;
- first and second electrodes respectively formed at respective other ends of the first and second glass tube portions;
- and
- a third electrode formed at the bent portion of the first and second glass tube portions,
- wherein the third electrode is grounded.
12 more elements
A liquid crystal display device comprising:
- a liquid crystal panel for an image;
- and
- a unit driving a backlight assembly to supply light to the liquid crystal panel,
- the unit including:
- a controller for outputting a control signal;
- a switching unit for outputting a DC square wave voltage in response to the control signal;
- an inverter for converting the DC square wave voltage into an AC voltage;
- and
- a lamp for emitting light in response to the AC voltage,
- the lamp including:
- first and second glass tube portions having respective one ends bent and connected integrally to each other;
- first and second electrodes respectively formed at respective other ends of the first and second glass tube portions;
- and
- a third electrode formed at the bent portion of the first and second glass tube portions,
- wherein electrical characteristics of the lamp are detected through the third electrode.
12 more elements
A liquid crystal display device comprising:
- a liquid crystal panel for an image;
- and
- a unit driving a backlight assembly to supply light to the liquid crystal panel,
- the unit including:
- a controller for outputting a control signal;
- a switching unit for outputting a DC square wave voltage in response to the control signal;
- an inverter for converting the DC square wave voltage into an AC voltage;
- and
- a lamp for emitting light in response to the AC voltage,
- the lamp including:
- first and second glass tube portions having respective one ends bent and connected integrally to each other;
- first and second electrodes respectively formed at respective other ends of the first and second glass tube portions;
- and
- a third electrode formed at the bent portion of the first and second glass tube portions,
- wherein an AC voltage having a phase opposite to a phase of an AC voltage supplied to the first and second electrodes is supplied to the third electrode.
12 more elements
Dependencies are inferred from the claim text.