IP Library Granted Patent US 8,410,694
Granted Patent B2
US 8,410,694 · App. 12/681,107 · Granted Apr 2, 2013

Plasma display panel

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Quick Facts
Patent No.
US 8,410,694
App. No.
12/681,107
Granted
Apr 2, 2013
Kind
B2
Abstract

To provide a plasma display panel that can improve the bright room contrast. The PDP of the present invention provided with a discharge space formed between a front-side substrate assembly and a rear-side substrate assembly, wherein the front-side substrate assembly has a plurality of display electrodes for defining lines of a screen, and the rear-side substrate assembly has a plurality of barrier ribs for partitioning the discharge space in a column direction, and a phosphor layer that is applied to side surfaces and a bottom surface of each of grooves formed between the barrier ribs, the plasma display panel is characterized in that each of the display electrodes for defining the lines comprises a belt-like base portion that extends over an entire length of the screen in a line direction, and a plurality of projections that projects from the base portion toward another display electrode adjacent thereto, each projection having a width the same as or narrower than a width of a bottom of the phosphor layer, and having a visible light transmittance ranging from 0% to 80% inclusive.

Claims (18)

1. A plasma display panel provided with a discharge space formed between a front-side substrate assembly and a rear-side substrate assembly,

wherein the front-side substrate assembly has a plurality of the display electrodes for defining lines of a screen, and

the rear-side substrate assembly has a plurality of barrier ribs for partitioning the discharge space in a column direction, and a phosphor layer that is applied to side surfaces and a bottom surface of each of grooves formed between the barrier ribs,

the plasma display panel is characterized in that each of the display electrodes for defining the lines comprises a belt-like metal electrode that extends over an entire length of the screen in a line direction, and a plurality of the translucent electrodes that projects from the metal electrode toward another display electrode adjacent thereto,

each translucent electrode has a width the same as or narrower than a width of a bottom of the phosphor layer, has a visible light transmittance ranging from 10% to 80% inclusive, and is formed by reducing a patterned transparent conductive material layer.

2. A plasma display panel provided with a discharge space formed between a front-side substrate assembly and a rear-side substrate assembly,

wherein the front-side substrate assembly has a plurality of display electrodes for defining lines of a screen, and

the rear-side substrate assembly has a plurality of barrier ribs for partitioning the discharge space in a column direction, and phosphor layer that is applied to side surfaces and a bottom surface of each of the grooves formed between the barrier ribs,

the plasma display panel is characterized in that each of the display electrodes for defining the lines comprises a belt-like metal electrode extends over an entire length of the screen in a line direction, and a plurality of translucent electrodes that projects from the metal electrode toward another display electrode adjacent thereto,

each translucent electrode has a width the same as or narrower than a width of a bottom of the phosphor layer, has a visible Light transmitting ranging from 10% to 80% inclusive, and is made of a transparent conductive material containing an impurity, the impurity being contained therein so that the visual light transmittance of the translucent electrode ranges from 10% to 80% inclusive.

3. A plasma display panel provided with a discharge space formed between a front-side, substrate assembly and a rear-side substrate assembly,

where the front-side substrate assembly has a plurality of display electrodes for defining lines of a screen, and

the rear-side substrate assembly has a plurality of barrier ribs for partitioning the discharge space in a column direction, and a phosphor layer that is applied to side surfaces and a bottom surface of each of grooves formed between the barrier ribs,

the plasma display panel is characterized in that each of the display electrodes for defining the lines comprises a belt-like metal electrode that extends over an entire length of the screen in a line direction, and a plurality of translucent electrodes that projects from the metal electrode toward another display electrode adjacent thereto,

each translucent electrode has a width the same as or narrower than the width of a bottom of the phosphor layer, has a visible light transmittance ranging from 10% to 80% inclusive, and is provided with a transparent conductive material layer and a metal layer laminated on the transparent conductive material layer, the metal layer having a thickness that allows the visual light transmittance of the translucent electrode to range from 10% to 80% inclusive.

4. The plasma display panel according to claim 1 , wherein the front-side substrate assembly is further provided with an optical filter on its front side, which has a visible light transmittance ranging from 30 to 70% inclusive.

5. The plasma display panel according to claim 2 , wherein the front-side substrate assembly is further provided with an optical filter on its front side, which has a visible light transmittance ranging from 30 to 70% inclusive.

6. The plasma display panel according to claim 3 , wherein the front-side substrate assembly is further provided with an optical filter on its front side, which has a visible light transmittance ranging from 30 to 70% inclusive.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 25, 2018
From: HITACHI MAXELL, LTD.
To: MAXELL, LTD.
Reel/Frame 045142/0208 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 8, 2014
From: HITACHI CONSUMER ELECTRONICS CO., LTD.; HITACHI CONSUMER ELECTRONICS CO, LTD.
To: HITACHI MAXELL, LTD.
Reel/Frame 033694/0745 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 12, 2013
From: HITACHI, LTD.
To: HITACHI CONSUMER ELECTRONICS CO., LTD.
Reel/Frame 030648/0217 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 6, 2010
From: MATSUSHITA, MITSUHITO; SASAKI, TAKASHI; YOSHINO, FUMIAKI
To: HITACHI, LTD.
Reel/Frame 024346/0532 →