IP Library Granted Patent US 6,850,007
Granted Patent B2
US 6,850,007 · App. 10/289,245 · Granted Feb 1, 2005

Plasma display panel assembly and method for manufacturing the same

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 6,850,007
App. No.
10/289,245
Granted
Feb 1, 2005
Kind
B2
Abstract

A plasma display panel assembly includes electrodes and a dielectric layer covering the electrodes. The dielectric layer is formed of a low-melting-point glass, and the electrodes are formed of a metal containing a crystallized glass. The metal and the low-melting-point glass are simultaneously fired to complete the electrodes and the dielectric layer. Thus, in a manufacturing process of an AC plasma display panel, the number of firing steps can be reduced.

Claims (27)

1. A plasma display panel assembly comprising:

a substrate;

electrodes disposed on the substrate, the electrodes comprising a metal containing a crystallized glass; and

a dielectric layer covering the electrodes, the dielectric layer comprising a low-melting-point glass,

wherein a crystallization peak temperature Tc of the crystallized glass is lower than a softening point Ts of the low-melting-point glass.

2. A plasma display panel assembly according to claim 1 , wherein the dielectric layer and the electrodes are formed by simultaneously firing a low-melting-point glass paste and a metallic paste containing a metallic powder.

3. A plasma display panel assembly according to claim 2 , wherein the metallic powder comprises silver or silver-palladium.

4. A front panel assembly of a plasma display panel, comprising:

a light-permeable substrate;

a plurality of display electrodes extending in one direction on the light-permeable substrate, the display electrodes each comprising a transparent conductive film and a metallic film containing a crystallized glass; and

a dielectric layer covering the display electrodes, the dielectric layer comprising a low-melting-point glass,

wherein a crystallization peak temperature Tc of the crystallized glass is lower than a softening point Ts of the low-melting-point glass.

5. A front panel assembly according to claim 4 , further comprising light-shielding films comprising a black insulating material containing a crystallized glass, wherein display electrode pairs are each defined by two adjacent display electrodes, and each light-shielding film is disposed between one display electrode pair and another adjacent display electrode pair in parallel with the display electrodes.

6. A back panel assembly of a plasma display panel, comprising:

a substrate;

a plurality of address electrodes extending in one direction on the substrate, the address electrodes comprising a metal containing a crystallized glass;

a dielectric layer covering the address electrodes, the dielectric layer comprising a low-melting-point glass; and

barrier ribs for partitioning discharge spaces on the dielectric layer, the barrier ribs comprising a low-melting-point glass,

wherein a crystallization peak temperature Tc of the crystallized glass is lower than a softening point Ts of the low-melting-point glass.

7. A front panel assembly of a plasma display panel having a transparent substrate, a plurality of display electrode pairs on the transparent substrate, light-shielding films disposed between one display electrode pair and another adjacent display electrode pair in parallel with the display electrodes, and a dielectric layer covering the display electrodes, the improvement comprising:

each display electrode comprising a transparent conductive film and a metallic film containing a crystallized glass;

the dielectric layer comprising a low-melting-point glass; and

the light-shielding films comprising a black insulating material containing a crystallized glass.

8. A front panel assembly of a plasma display having a transparent substrate, comprising:

plural display electrodes formed on the transparent substrate, each thereof comprising a transparent conductive film and a metallic film containing a crystallized glass;

light-shielding films disposed between adjacent display electrode pairs in parallel therewith and each comprising a black insulating material containing a crystallized glass; and

a dielectric layer comprising a low-melting-point glass covering the display electrodes.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2008
From: HITACHI LTD.
To: HITACHI PLASMA PATENT LICENSING CO., LTD.
Reel/Frame 021785/0512 →
TRUST AGREEMENT REGARDING PATENT RIGHTS, ETC. DATED JULY 27, 2005 AND MEMORANDUM OF UNDERSTANDING REGARDING TRUST DATED MARCH 28, 2007 Recorded Apr 13, 2007
From: HITACHI LTD.
To: HITACHI PLASMA PATENT LICENSING CO., LTD.
Reel/Frame 019147/0847 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 23, 2005
From: FUJITSU LIMITED
To: HITACHI, LTD.
Reel/Frame 017105/0910 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 7, 2002
From: SHINODA, TSUTAE; AWAJI, NORIYUKI
To: FUJITSU LIMITED
Reel/Frame 013469/0433 →