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US 7,679,584 B2Granted
Electron Emission Display (EED) with separated grounds
AssigneeSamsung SDI Co., Ltd.
InventorDong-Hyup Jeon
Life of this patent
Estimating the term…
Abstract
An EED capable of reducing noise influence between a high voltage element and a low voltage logic element in an EED panel includes: a high voltage ground for a high voltage element, a low voltage ground for a low voltage element, and a ferrite bead, connected between the high voltage ground and the low voltage ground, to block RF noise from the high voltage ground.
Claims17
An Electron Emission Display (EED) comprising:
- a high voltage terminal for a high voltage element;
- a low voltage terminal for a low voltage element;
- a ferrite bead, connected between the high voltage terminal and the low voltage terminal, to separate the high voltage terminal and the low voltage terminal into a high voltage ground and a low voltage ground, to block RF noise from the high voltage ground;
- and
- a plurality of capacitors respectively connected between a digital logic power source and the low voltage terminal and between an analog logic power source and the low voltage terminal, the ferrite bead and the capacitors adapted to function as a n-type noise reduction circuit;
- the low voltage terminal is commonly connected to the digital logic power source for a digital logic element and analog logic power source for an analog logic element, and the ferrite bead is connected between the digital logic power source and the analog logic power source to mutually block noise from each other.
3 more elements
An Electron Emission Display (EED), comprising:
- a plurality of high voltage terminals respectively for a plurality of high voltage elements driven by different high voltages;
- a terminal for a digital logic power source;
- a terminal for an analog logic power source;
- a low voltage terminal for a low voltage element connected in common to the terminal for the digital logic power source and the terminal for the analog logic power source;
- a plurality of ferrite beads connected between the plurality of high voltage terminals;
- and
- a ferrite bead connected between each of the plurality of high voltage terminals and the low voltage terminals;
- and
- a π-type noise reduction circuit formed by the ferrite beads and a plurality of capacitors, the plurality of capacitors being respectively connected between the digital logic power source and the low voltage terminal and respectively connected between the analog logic power source and the low voltage terminal.
6 more elements
An Electron Emission Display (EED), comprising:
- a high voltage terminal for a high voltage element;
- a low voltage terminal for a low voltage element;
- a ferrite bead, connected between the high voltage terminal and the low voltage terminal, to separate the high voltage terminal and the low voltage terminal into a high voltage ground and a low voltage ground, to block RF noise from the high voltage ground;
- and
- a π-type noise reduction circuit formed by the ferrite bead and a plurality of capacitors, the plurality of capacitors being respectively connected between the digital logic power source and the low voltage terminal and respectively connected between the analog logic power source and the low voltage terminal.
2 more elements
Dependencies are inferred from the claim text.