JP2001126615A - Method and apparatus of forming phosphor layer on plasma display pane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of forming a phosphor layer on a plasma display panel (PDP) that may precisely apply phosphor ink or paste between the barrier ribs formed on the back plate of the PDP with moving the dispenser nozzle close to the back plate with preventing the nozzle from contacting the liquid receiver partly covering the electrode and barrier ribs. SOLUTION: The dispenser nozzle 1 is held by a single shaft-moving device 7. The phosphor ink or paste is applied between the ribs while moving the back plate 2 by a transfer device 8 with the dispenser nozzle 1 positioned close to the back plate 2. When the dispenser nozzle 1 is moved close to the parts 3a and 3b of the electrode and barrier ribs, it is raised with moving the liquid receiver 9 to partly cover the parts 3a and 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a color display PDP.
The present invention relates to a method and an apparatus for applying and forming a phosphor between ribs on a rear plate of the present invention.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a phosphor is applied to a back plate of a color display PDP by moving a back plate 2 in an arrow direction (horizontal direction) while moving a phosphor from a dispenser nozzle 1. Ink or paste was applied by dropping.

In this case, the masking tapes 4a, 4b are previously formed on the electrode portions of the back plate 2 and the portions 3a, 3b of the ribs of the ribs, since the adhesion of the phosphor causes deterioration of the characteristics of the PDP.
Is adhered or, as shown in FIG. 6, covered with liquid receivers 5a and 5b to prevent adhesion.

[0004]

However, the dispenser nozzle 1 must be as close to the back plate 2 as possible so that the phosphor ink or paste drips at a predetermined position, and the distance between them is 1 mm or less. When the distance is reduced, the thickness of the liquid receivers 5a and 5b in FIG. 6 is set to 1 mm in consideration of the volume for receiving the phosphor ink or the paste and maintenance such as cleaning.
Because of the necessity of the above, it comes into contact with the dispenser nozzle 1. On the other hand, in the case of the masking tapes 4a and 4b in FIG. 5, although the thickness can be made thinner than the liquid receivers 5a and 5b, they cannot be reused, so that the cost in mass production cannot be reduced. was there.

The present invention solves the above-mentioned problems of the prior art. In order to accurately drop a phosphor ink or paste at a predetermined position between ribs of a partition wall, a dispenser nozzle is brought closer to the back plate to 1 mm or less. In addition, even if the phosphor ink or the paste is covered with the liquid receiver so as not to adhere to a part of the electrode portion and the partition rib of the back plate, the dispenser nozzle does not contact the liquid receiver so that the manufacturing cost is reduced. An object of the present invention is to provide a method for forming a PDP phosphor and an apparatus therefor.

[0006]

In order to achieve the above object, a method of forming a phosphor of a color display PDP according to the present invention comprises moving a back plate and a dispenser nozzle relative to each other, and moving the back plate to a required distance. When the phosphor ink or paste is applied dropwise from the dispenser nozzle approached, when the dispenser nozzle and the liquid receiver arranged so as to cover a part of the electrode portion of the back plate and the partition rib approach,
The dispenser nozzle is raised to avoid contact between the dispenser nozzle and the liquid receiver.

[0007] The phosphor forming apparatus for a color display PDP according to the present invention comprises: a dispenser nozzle for dropping phosphor ink or paste; nozzle moving means for holding and moving the dispenser nozzle up and down; Conveying means for holding the back plate and moving in the horizontal direction, comprising a liquid receiver and a liquid receiver moving means for moving the liquid receiver to a predetermined position, while relatively moving the back plate and the dispenser nozzle, The phosphor ink or paste is dropped and applied from the dispenser nozzle which is close to the back plate to a required distance, and one of the electrode portions of the back plate and the partition ribs to be prevented from adhering the phosphor ink or paste. When the dispenser nozzle is raised when the dispenser nozzle approaches the unit In, so as to cover a portion of the electrode portion and the barrier ribs of the back plate, is characterized in that moving the liquid receiving.

According to another aspect of the present invention, there is provided a phosphor forming apparatus for a color display PDP, comprising: a dispenser nozzle for dropping phosphor ink or paste; nozzle moving means for holding the dispenser nozzle and moving the dispenser nozzle up and down; Transport means for holding the back plate of the color display PDP, which is provided with a liquid receiver so as to cover a part of the electrode portion and the rib of the partition wall where the body ink or paste is to be prevented from being attached, and moving the back plate horizontally. And dispenser nozzles are relatively moved, and the phosphor ink or paste is applied by dripping from the dispenser nozzle that is close to the back plate to a required distance, and when the liquid receiver and the dispenser nozzle approach, Raising the dispenser nozzle, the dispenser nozzle and the liquid receiver It is characterized in that so as to avoid contact.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) FIG. 1 shows a phosphor forming apparatus for a color display PDP in Embodiment 1 of the present invention. In FIG. 1, 1 is a dispenser nozzle for dropping phosphor ink or paste, 7 is a uniaxial moving device for holding and moving the dispenser nozzle 1 up and down, 2 is a rear plate of a color display PDP, and 6 is a partition rib thereof. is there. Reference numeral 8 denotes a transport device that holds the back plate 2 and moves it in the horizontal direction. Reference numeral 9 denotes a liquid receiver, which is held by a liquid receiver moving device (not shown).

Next, the operation of this embodiment will be described. First, the back plate 2 is set on the transport device 8, and the dispenser nozzle 1 is moved closer to the back plate 2 by 1 mm or less by the uniaxial moving device 7. The back plate 2 is moved in the direction of the arrow, and the phosphor ink or paste is dropped from the dispenser nozzle 1 and applied between the partition ribs 6 of the back plate 2.

Here, the electrode portion of the back plate 2 and a part 3 of the rib of the partition to avoid the adhesion of the phosphor ink or the paste.
When the dispenser nozzle 1 approaches the a and 3b, it is detected by a position detecting device (not shown) installed in the transporting device 8, and as shown in FIG. The liquid receiver 9 is moved by the liquid receiver moving device so as to cover the electrode portions 2 and the portions 3a and 3b of the partition ribs.

According to the first embodiment configured as described above, in order to accurately drop the phosphor ink or paste at a predetermined position between the ribs of the partition wall, the dispenser nozzle 1 is attached to the back plate 2 by 1 mm or less. The dispenser nozzle 1 is prevented from coming into contact with the liquid receiver 9 even when the dispenser nozzle 1 is covered with the liquid receiver 9 so that the phosphor ink or the paste does not adhere to the electrode portion of the back plate 2 and the part 3a, 3b of the partition rib. be able to. Further, since the liquid receiver 9 can be used repeatedly, the manufacturing cost can be reduced.

(Embodiment 2) FIG. 3 shows an apparatus for forming a phosphor of a color display PDP according to Embodiment 2 of the present invention. 3, the same members as those in FIG. 1 are denoted by the same reference numerals, and detailed description will be omitted. The difference from the first embodiment is that the liquid receivers 10a and 10b
In addition, it is fixed so as to cover the electrode portion and part 3a, 3b of the partition rib.

Also in this case, the phosphor ink or the paste is applied by bringing the dispenser nozzle 1 closer to the back plate 2 by 1 mm or less, but as shown in FIG. 4, the dispenser nozzle 1 is attached to the liquid receivers 10a and 10b. When approaching, the dispenser nozzle 1 is raised by the uniaxial moving device 7, and the dispenser nozzle 1 and the liquid receivers 10a, 10
Avoid contact with b.

According to the second embodiment configured as described above, in order to accurately drop the phosphor ink or paste at a predetermined position between the ribs of the partition wall, the dispenser nozzle 1 is placed on the back plate 2 at a distance of 1 mm or less. And the liquid receivers 10a and 10b so that the phosphor ink or the paste does not adhere to the electrode portions of the back plate 2 and the portions 3a and 3b of the partition ribs.
Even if 10b is installed on the back plate 2, the dispenser nozzle 1 can be prevented from contacting the liquid receivers 10a and 10b. Further, since the liquid receivers 10a and 10b can be used repeatedly, the manufacturing cost can be reduced.

[0017]

As described above, according to the present invention,
By bringing the dispenser nozzle closer to the back plate to 1 mm or less, the phosphor ink or paste can be accurately applied to a predetermined position between the partition ribs, and the dispenser nozzle should prevent the phosphor ink or paste from adhering. When approaching a part of the rib and the partition rib, the dispenser nozzle is moved so as to cover them, or the dispenser nozzle is raised so as to avoid the liquid receiver previously set to cover, so that contact between the dispenser nozzle and the liquid receiver is avoided. Since the liquid receiver can be used repeatedly, production costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a phosphor forming apparatus according to a first embodiment of the present invention.

FIG. 2 is an operation explanatory diagram according to the first embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a phosphor forming apparatus according to a second embodiment of the present invention.

FIG. 4 is an operation explanatory diagram according to Embodiment 2 of the present invention.

FIG. 5 is a view showing a phosphor forming method in which a part of an electrode portion and a rib of a partition in a conventional example is covered with a masking tape.

FIG. 6 is a diagram showing a phosphor forming method in which a part of an electrode portion and a rib of a partition in a conventional example is covered with a liquid receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dispenser nozzle 2 Back plate 3a, 3b Part of electrode part and partition rib 6 Partition rib 7 Uniaxial moving device 8 Transport device 9, 10a, 10b Liquid receiver

Continued on the front page (72) Inventor Shigeru Oki 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. FA01 FA02 GG09 JA02 JA13 MA24 MA26

Claims (3)

[Claims] 1. A method of forming a phosphor layer by applying phosphor ink or paste between partition ribs of a back plate of a color display PDP, wherein the back plate and a dispenser nozzle are relatively moved. The phosphor ink or the paste is dropped and applied from the dispenser nozzle which is close to the rear plate to a required distance, and the liquid receiver and the liquid receiver are arranged so as to cover a part of the electrode portion of the rear plate and the partition ribs. When the dispenser nozzle approaches
A method for forming a phosphor for a color display PDP, wherein the dispenser nozzle is raised to avoid contact between the dispenser nozzle and the liquid receiver. 2. A dispenser nozzle for dropping phosphor ink or paste, a nozzle moving means for holding the dispenser nozzle and moving it up and down, and a conveying means for holding a back plate of the color display PDP and moving it horizontally. And a liquid receiver and liquid receiver moving means for moving the liquid receiver to a predetermined position. The dispenser nozzle relatively moves the back plate and the dispenser nozzle and approaches the back plate to a required distance. The phosphor ink or the paste is applied by dropping, and when the dispenser nozzle is close to a part of the electrode portion of the back plate and the rib of the partition to avoid the adhesion of the phosphor ink or the paste, the dispenser nozzle As well as
The phosphor forming apparatus for a color display PDP, wherein the liquid receiver is moved so as to cover an electrode part of the back plate and a part of the rib of the partition wall. 3. A dispenser nozzle for dropping a phosphor ink or a paste, a nozzle moving means for holding and moving the dispenser nozzle up and down, and an electrode portion and a partition rib to be prevented from adhering the phosphor ink or the paste. Transport means for holding the back plate of the color display PDP to which a liquid receiver is attached so as to cover a part thereof and moving the back plate in the horizontal direction, and relatively moving the back plate and the dispenser nozzle to a required distance. The phosphor ink or paste is applied by dripping from the dispenser nozzle approaching the back plate, and when the liquid receiver and the dispenser nozzle approach, the dispenser nozzle is raised to raise the dispenser nozzle and the liquid receiver. Color display characterized by avoiding contact with DP phosphor forming apparatus.