IP Library Granted Patent US 6,995,754
Granted Patent B2
US 6,995,754 · App. 10/008,856 · Granted Feb 7, 2006

Plasma display module

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Quick Facts
Patent No.
US 6,995,754
App. No.
10/008,856
Granted
Feb 7, 2006
Kind
B2
Abstract

A plasma display panel, driving circuits for driving the plasma display panel, and a power circuit into which an external alternating current is inputted are provided to a plasma display module. The power circuit supplies driving voltages to the driving circuits. The power circuit outputs an external source voltage to be used by an external power circuit and a control voltage for controlling operations of an interface board to which source voltages of the interface board are supplied from the external power circuit. Furthermore, operations of the power circuit are controlled with control signals output by the interface board.

Claims (30)

1. A plasma display, said display comprising:

a plasma display module;

an interface board controlled by a control voltage and supplied with a source voltage so as to produce an image signal and an inside voltage source control signal; and

an external power circuit which supplies said source voltage to said interface board in accordance with an auxiliary voltage,

wherein said plasma display module includes:

a plasma display panel;

a driving circuit for driving said plasma display panel in response to driving voltages supplied thereto thereby causing said plasma display to perform its display operation on the basis of said image signal; and

an inside power circuit driven by an external alternating current, for producing said control voltage for controlling operations of said interface board and said auxiliary source voltage, said inside power circuit being controlled to supply said driving voltages to said driving circuit in accordance with said inside voltage source control signal supplied from said interface board.

2. A plasma display according to claim 1 , wherein said inside voltage source control signal contains first and second source control signals, and said inside power circuit supplies said control voltage to said interface board when said external alternating current is inputted to said inside power circuit, and supplies said auxiliary voltage to said external power circuit in response to said first source control signal, and supplies said driving voltages to said driving circuit in response to said second source control signal.

3. A plasma display according to claim 1 , wherein said driving voltages have different values from each other, said inside power circuit starts up a lowest-value voltage of said driving voltages at a timing earlier than that of a highest-value voltage of said driving voltages, in response to said inside voltage source control signal.

4. A plasma display according to claim 3 , wherein said inside power circuit shuts down said highest-value voltage at a timing earlier than that of said lowest-value voltage, in response to said inside voltage source control signal.

5. A plasma display according to claim 1 , wherein said inside power circuit initiates its production of said control voltage earlier than said auxiliary voltage.

6. A plasma display module according to claim 5 , in which said inside power circuit starts up a lowest-value voltage of said driving voltages at a timing earlier than that of a highest-value voltage of said driving voltages, in response to said inside voltage source control signal.

7. A plasma display module comprises:

a plasma display panel;

driving circuits which drive said plasma display panel; and

a power circuit into which an external alternating current is inputted from outward, said power circuit supplying driving voltages to said driving circuits, and outputting an external source voltage to be used by an external power circuit and a control voltage for controlling operations of an interface board to which source voltages of said interface board are supplied from said external power circuit, and operations of said power circuit being controlled with control signals output by said interface board, wherein said control signals output by said interface board contain first and second control signals, and said power circuit outputs said control voltage to said interface board when said external alternating current is inputted to said power circuit, outputs said external power voltage to said external power circuit when said first control signal is inputted to said power circuit, and outputs said driving voltages to said driving circuits when said second control signal is inputted to said power circuit.

8. A plasma display module according to claim 7 , wherein said driving voltages contain a plurality of voltages having different values, and said power circuit starts up a lowest-value voltage of said plurality of voltages earlier than a highest-value voltage of said plurality of voltages.

9. A plasma display module according to claim 7 , wherein said driving voltages contain a plurality of voltages having different values, and said power circuit shuts down a highest-value voltage of said plurality of voltages earlier than a lowest-value voltage of said plurality of voltages.

10. A plasma display module according to claim 7 , wherein said driving voltages contain a plurality of voltages having different values, and said power circuit starts up a lowest-value voltage of said plurality of voltages earlier than a highest-value voltage of said plurality of voltages and shuts down said highest-value voltage earlier than said lowest-value voltage.

11. A plasma display module according to claim 7 , wherein said driving voltages contain a plurality of voltages having different values, and said power circuit starts up a lowest-value voltage of said plurality of voltages earlier than a highest-value voltage of said plurality of voltages.

12. A plasma display module according to claim 7 , wherein said driving voltages contain a plurality of voltages having different values, and said power circuit shuts down a highest-value voltage of said plurality of voltages earlier than a lowest-value voltage of said plurality of voltages.

13. A plasma display module according to claim 7 , wherein said driving voltages contain a plurality of voltages having different values, and said power circuit starts up a lowest-value voltage of said plurality of voltages earlier than a highest-value voltage of said plurality of voltages and shuts down said highest-value voltage earlier than said lowest-value voltage.

14. A plasma display module, comprising:

a plasma display panel;

a driving circuit for driving said plasma display panel in response to driving voltages supplied thereto thereby causing said plasma display to perform its display operation on the basis of an image signal applied thereto; and

an inside power circuit driven by an external alternating current, and producing a control voltage for controlling operations of an interface board which is operative under a source voltage supplied thereto from an external power circuit and an auxiliary voltage for causing said external power circuit to be active,

said inside power circuit being controlled for supplying said driving voltages to said driving circuit, in accordance with a voltage source control signal supplied from said interface board.

15. A plasma display module according to claim 14 , wherein said inside voltage source circuit initiates its production of said control voltage earlier than said auxiliary voltage.

16. A plasma display module according to claim 14 , wherein said inside power circuit shuts down said highest-value voltage at a timing earlier than that of said lowest-value voltage, in response to said voltage source control signal.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 15, 2009
From: PIONEER CORPORATION (FORMERLY CALLED PIONEER ELECTRONIC CORPORATION)
To: PANASONIC CORPORATION
Reel/Frame 023234/0173 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 29, 2005
From: PIONEER PLASMA DISPLAY CORPORATION
To: PIONEER CORPORATION
Reel/Frame 016593/0127 →
CHANGE OF NAME Recorded Dec 17, 2004
From: NEC PLASMA DISPLAY CORPORATION
To: PIONEER PLASMA DISPLAY CORPORATION
Reel/Frame 015478/0218 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 15, 2004
From: NEC CORPORATION
To: NEC PLASMA DISPLAY CORPORATION
Reel/Frame 015460/0617 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 8, 2001
From: SUETSUGU, HIROSHI; OHZONO, TAKU
To: NEC CORPORATION
Reel/Frame 012366/0202 →