Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly
Reexamination Certificate
1999-06-23
2001-08-07
Ramsey, Kenneth J. (Department: 2879)
Electric lamp or space discharge component or device manufacturi
Process
With assembly or disassembly
C219S121660
Reexamination Certificate
active
06270388
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method for fabricating a partition of a plasma display panel, and more particularly, to a method for fabricating a partition directly on a substrate using a laser beam.
2. Description of the Related Art
A plasma display panel produces a luminous discharge by electrically discharging a gas sealed between two electrodes, and forms a picture image by exciting a phosphor layer with ultraviolet rays generated during the luminous discharge.
Referring to
FIG. 1
illustrating an example of a conventional plasma display panel, transparent electrodes
12
are formed in strips on the lower surface of a front substrate
11
, and bus electrodes
13
whose widths are narrower than those of the transparent electrodes
12
are formed on the transparent electrodes
12
. Also, a black matrix
16
is formed between neighboring transparent electrodes
12
for preventing optical crosstalk between neighboring pixels and increasing contrast.
A transparent dielectric layer
14
is formed on the lower surface of the front substrate
11
to cover the transparent electrodes
12
.
A protective layer
15
made of magnesium oxide (MgO) is deposited on the lower surface of the transparent dielectric layer
14
.
Address electrodes
17
are formed on a rear substrate
19
coupled to the side facing the front substrate
11
so as to be perpendicular to the transparent electrodes
12
. The address electrodes
17
are covered by a dielectric layer
20
coated on the rear substrate
19
.
Partitions
18
are formed on the dielectric layer
20
to define a discharge space. The partitions
18
prevent optical crosstalk between neighboring discharge cells.
A method for fabricating the partitions
18
in the plasma display panel will be described with reference to FIG.
2
.
First, a partition material is coated onto the entire dielectric layer
20
formed on the rear substrate
17
so as to cover the address electrodes
17
. Next, the partition material is cut by laser to complete the partitions
18
.
However, according to the conventional partition fabrication method, there is a considerable loss of the partition material. Also, since the partition material must be cut after it is coated, much time is required to do so.
SUMMARY OF THE INVENTION
To solve the above problems, it is an object of the present invention to provide a method for fabricating a partition of a plasma display panel by which the partition can be simply fabricated without loss of a partition material, by directly coating the partition material onto a substrate.
Accordingly, to achieve the above object, there is provided a method for fabricating a partition of a plasma display panel including the steps of spraying and coating a powdered partition material onto a substrate on which address electrodes and a dielectric layer are formed, melting the partition material by a laser beam, and solidifying the melted partition material to complete the partition.
Also, coating, melting and solidifying of the partition material are continuously performed in a direction along which the partition is to be formed.
REFERENCES:
patent: 4323756 (1982-04-01), Brown et al.
patent: 5484314 (1996-01-01), Farnsworth
patent: 5578227 (1996-11-01), Rabinovich
patent: 5580472 (1996-12-01), Maybon
patent: 5883462 (1999-03-01), Ushifuss et al.
patent: 6124916 (2000-09-01), Park et al.
Hopper Todd R
Lowe Hauptman & Gilman & Berner LLP
Ramsey Kenneth J.
Samsung Display Devices Co. Ltd.
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