PLASMA DISPLAY PANEL AND METHOD FOR MANUFACTURING THE SAME

Abstract

A plasma display panel and a method for manufacturing the same are disclosed. The plasma display panel includes a front substrate formed with a plurality of sustaining electrode pairs each including a scan electrode and a sustaining electrode, a rear substrate formed with a plurality of address electrodes arranged orthogonal to the sustaining electrode pairs, a plurality of barrier ribs formed on the rear substrate to define a plurality of discharge cells, the barrier ribs containing at least one of pigments with colors respectively corresponding to wavelength bands of lights emitted from the discharge cells, and phosphor layers respectively formed in the plurality of discharge cells, the phosphor layers containing at least one of pigments with colors respectively corresponding to the wavelength bands of the lights emitted from the discharge cells.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

FIG. 1 is a sectional view illustrating a general plasma display panel;

FIG. 2 is a sectional view illustrating a plasma display panel according to a first embodiment of the present invention;

FIG. 3 is a graph for comparison of the reflectance of a blue barrier rib used in the first embodiment of the present invention with the reflectance of a conventional barrier rib;

FIG. 4 is a sectional view illustrating a plasma display panel according to a second embodiment of the present invention;

FIGS. 5A to 5C are graphs for comparison of the reflectance of phosphors used in the second embodiment of the present invention with the reflectance of conventional phosphors;

FIG. 6 is a sectional view illustrating a plasma display panel according to a third embodiment of the present invention;

FIG. 7 is a sectional view illustrating a plasma display panel according to a fourth embodiment of the present invention;

FIGS. 8A to 8C are graphs for comparison of the reflectance of barrier ribs used in the third and fourth embodiments of the present invention with the reflectance of the conventional barrier ribs;

FIGS. 9A to 9F are sectional views for explaining manufacturing processes included in a plasma display panel manufacturing method according to an embodiment of the present invention; and

FIG. 10 is a schematic view illustrating an ink jet injection method used in the plasma display panel manufacturing method according to the illustrated embodiment of the present invention.

Claims

1. A plasma display panel comprising: a front substrate formed with a plurality of sustaining electrode pairs each including a scan electrode and a sustaining electrode;a rear substrate formed with a plurality of address electrodes arranged orthogonal to the sustaining electrode pairs;a plurality of barrier ribs formed on the rear substrate to define a plurality of discharge cells, the barrier ribs containing at least one of pigments with colors respectively corresponding to wavelength bands of lights emitted from the discharge cells; andphosphor layers respectively formed in the plurality of discharge cells, the phosphor layers containing at least one of pigments with colors respectively corresponding to the wavelength bands of the lights emitted from the discharge cells.

2. The plasma display panel according to claim 1, wherein each barrier rib comprises 90 to 99.99 wt % of low-melting-point glass powder, and the pigment contained in the barrier rib has a content of 0.01 to 10 wt %.

3. The plasma display panel according to claim 1, wherein the pigment contained in each barrier rib comprises at least one of organic and inorganic materials exhibiting blue.

4. The plasma display panel according to claim 3, wherein the pigment contained in each barrier rib comprises at least one of CoOAl2O3, 2(Co, Zn)O.SiO2, and ZrSiO4.

5. The plasma display panel according to claim 3, wherein: the plurality of discharge cells comprise a first discharge cell emitting red light, a second discharge cell emitting green light, and a third discharge cell emitting blue light; andthe phosphor layers comprise a red phosphor layer formed in the first discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting red, a green phosphor layer formed in the second discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting green, and a blue phosphor layer formed in the third discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting blue.

6. The plasma display panel according to claim 5, wherein: the pigment contained in the red phosphor layer comprises α-Fe2O3;the pigment contained in the red phosphor layer comprises at least one of (Co, Zn)O.(Al, Cr)2O3, 3CaO—Cr2O3.3SiO2, and (Al, Cr)2O3; andthe pigment contained in the blue phosphor layer comprises at least one of CoOAl2O3, 2(Co, Zn)O.SiO2, and ZrSiO4.

7. The plasma display panel according to claim 5, wherein each of the red, green, and blue phosphor layers comprises 80 to 99.99 wt % of phosphor powder, and the pigment contained in the phosphor layer has a content of 0.01 to 20 wt %.

8. The plasma display panel according to claim 1, wherein the pigment contained in each barrier rib comprises at least one of organic and inorganic materials exhibiting green.

9. The plasma display panel according to claim 8, wherein the pigment contained in each barrier rib comprises at least one of (Co, Zn)O (Al, Cr)2O3, 3CaO—Cr2O3.3SiO2 and (Al, Cr)2O3.

10. The plasma display panel according to claim 8, wherein: the plurality of discharge cells comprise a first discharge cell emitting red light, a second discharge cell emitting green light, and a third discharge cell emitting blue light; andthe phosphor layers comprise a red phosphor layer formed in the first discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting red, a green phosphor layer formed in the second discharge cell, and a blue phosphor layer formed in the third discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting blue.

11. The plasma display panel according to claim 1, wherein the barrier ribs contain pigments with colors corresponding to red, green, and blue lights emitted from the plurality of discharge cells, respectively.

12. The plasma display panel according to claim 11, wherein: the plurality of discharge cells comprise a first discharge cell emitting red light, a second discharge cell emitting green light, and a third discharge cell emitting blue light; andthe barrier ribs comprise a first barrier rib formed to surround the first discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting red, a second barrier rib formed to surround the second discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting green, and a third barrier rib formed to surround the third discharge cell while containing a pigment comprising at least one of organic and inorganic materials exhibiting blue.

13. The plasma display panel according to claim 12, wherein adjacent ones of the first, second, and third barrier ribs are attached to or spaced apart from each other.

14. The plasma display panel according to claim 12, wherein the pigment contained in the first barrier rib comprises α-Fe2O3.

15. The plasma display panel according to claim 12, wherein the pigment contained in the second barrier rib comprises at least one of (Co, Zn)O.(Al, Cr)2O3, 3CaO—Cr2O3.3SiO2, and (Al, Cr)2O3.

16. The plasma display panel according to claim 12, wherein the pigment contained in the third barrier rib comprises at least one of CoOAl2O3, 2(Co, Zn)O.SiO2, and ZrSiO4.

17. A plasma display panel comprising: a front substrate formed with a plurality of sustaining electrode pairs each including a scan electrode and a sustaining electrode;a rear substrate formed with a plurality of address electrodes arranged orthogonal to the sustaining electrode pairs;a plurality of barrier ribs formed on the rear substrate to define a plurality of discharge cells, the barrier ribs being coated with pigments with colors corresponding to wavelength bands of red, green, and blue light emitted from the discharge cells at side and upper surfaces of the barrier ribs facing in respective discharge cells; andphosphor layers respectively formed in the plurality of discharge cells.

18. The plasma display panel according to claim 17, wherein: a pigment of oα-Fe2O3 is coated over the side and upper surfaces of the barrier ribs facing in the discharge cell emitting light of the red wavelength band;at least one of (Co, Zn)O (Al, Cr)2O3, 3CaO—Cr2O3.3SiO2, and (Al, Cr)2O3 is coated over the side and upper surfaces of the barrier ribs facing in the discharge cell emitting light of the green wavelength band; andat least one of CoOAl2O3, 2(Co, Zn)O.SiO2, and ZrSiO4 is coated over the side and upper surfaces of the barrier ribs facing in the discharge cell emitting light of the blue wavelength band.

19. A method for manufacturing a plasma display panel, comprising: preparing a front substrate formed with a plurality of sustaining electrode pairs each including a scan electrode and a sustaining electrode, and a rear substrate formed with a plurality of address electrodes arranged orthogonal to the sustaining electrode pairs;forming a dielectric layer over the sustaining electrode pairs of the rear substrate;forming a plurality of barrier ribs on the lower dielectric layer, to define a first, second, and third discharge cells;injecting a pigment comprising at least one of organic and inorganic materials exhibiting red into the first discharge cell, injecting a pigment comprising at least one of organic and inorganic materials exhibiting green into the second discharge cell, and injecting a pigment comprising at least one of organic and inorganic materials exhibiting blue into the third discharge cell;drying the first, second, and third discharge cells filled with the pigments, to maintain the pigments in a state of being coated over side and upper surfaces of the barrier ribs facing in respective discharge cells;forming a red phosphor layer in the first discharge cell; forming a green phosphor layer in the second discharge cell, and forming a blue phosphor layer in the third discharge cell;baking and drying the red, green, and blue phosphor layers; andassembling the front and rear substrates.

20. The method according to claim 19, wherein the injection of each pigment is carried out such that the pigment fills the associated discharge cell to cover the barrier ribs defining the associated discharge cells up to the upper surfaces of the barrier ribs.

21. The method according to claim 19, wherein: the pigment injected into the first discharge cell comprises α-Fe2O3;the pigment injected into the second discharge cell comprises at least one of (Co, Zn)O.(Al, Cr)2O3, 3CaO—Cr2O3.3SiO2, and (Al, Cr)2O3; andthe pigment injected into the third discharge cell comprises at least one of CoOAl2O3, 2(Co, Zn)O.SiO2, and ZrSiO4.