KR20010018876A - Method for forming plasma display panel - Google Patents

Abstract

PURPOSE: A method for forming a plasma display panel is provided to reduce production cost and power consumption and improve life span and contrast ratio. CONSTITUTION: A groove having same size as a pattern of a bus electrode is formed on glass substrate by using an etcher. The pattern of the bus electrode is formed by stuffing the groove with a bus electrode paste using dispense method. A pattern of a transparent electrode is formed on an upper part of the transparent electrode pattern. A black stripes are formed among the pattern of the bus electrode without space to improve contrast ratio. Two layers of transparent dielectric is formed on the pattern of the transparent electrode and the pattern of the bus electrode using layered beta printing. A front plasma display panel is completed by applying a protective layer such as MgO to upper part of the layered transparent dielectric. A rear plasma display panel is completed by forming a groove having same size as an address electrode on the glass substrate, a pattern of the address electrode in the groove and partition walls between the address electrode at a space for separation from adjacent cells and applying white backs to the side of the walls and to the upper part of the glass substrate for improvement of brightness and a fluorescent material to upper part of the whole white back.

Description

Method for forming plasma display panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (abbreviated as PDP), and more particularly to a method of manufacturing an AC (color) PDP using an alternate lighting method of ALiS (abbreviated as ALiS). .

As is well known, a PDP is a device that displays characters or graphics by using light emitted from a plasma generated during gas discharge. PDP has the advantage of being most suitable for large-scale display among various flat panel displays such as liquid crystal display (LCD), field emission display (FED), and electroluminescence display (ELD), which are being actively studied.

That is, the plasma display panel can be enlarged to 40 "or more, and CRT level colorization is possible because the ultraviolet light generated by the discharge uses a photoluminescence mechanism that stimulates the fluorescent film and emits visible light. As a self-emissive display, it has many unique advantages that cannot be found in other flat panel devices such as having a wide view of more than 160 °. It is a multimedia that combines the functions of next-generation high-definition wall-mounted TV, TV, and PC. It is considered to be a large display device for use.

PDP uses two glass substrates with a thickness of about 3 mm to apply an appropriate electrode and phosphor on each substrate, and forms plasma in the space therebetween while maintaining the distance between the two substrates at about 0.1 mm to 0.2 mm. Since it is adopted, it can be enlarged as a flat plate. In addition, in the PDP, the gas discharge has a strong non-linearity in which discharge does not occur even when a voltage is applied between electrodes, and a super large panel having a memory function that is essential for driving a large display. Even in this case, a high quality image can be expressed without deteriorating the luminance.

Currently, AC type three-electrode surface discharge PDPs using an ADS (Address Display Seperating) driving method are widely known among the above-described models of PDPs.

However, the AC-type surface-discharge PDP of the AC type has high resolutions in response to HDTV, resulting in problems such as a decrease in luminance, an interference between adjacent cells, and a decrease in the aperture ratio.

In order to solve the above problems, a recent method is an AC type color PDP structure employing an ALiS method, that is, an interlace method, which is a scanning method of dividing a conventional scanning line alternately.

In developing the ALiS method, a black stripe region, which is a non-light emitting region between scan lines, that is, between the display lines and the display lines, is noted. In other words, the non-light emitting area provided to secure the independence of the discharge cells is removed, and the width of the transparent sustain electrode can be widened to be used as the display area, thereby increasing the resolution and preventing luminance decrease. Specifically, the display electrode pairs and the display electrode pairs between adjacent cells separated from the AC-type three-electrode surface discharge PDP of the ADS (Address Display Seperating) driving method are equally spaced between the display electrode pairs of one cell. As a result, by widening the width of the electrodes and arranging the display electrode pairs at equal intervals, it is possible to make a light emitting area between all the electrodes without significantly changing the conventional panel structure.

In addition, the ratio of the area through which the light occupying the area of each cell, which is one of the main factors for determining luminance, that is, the aperture ratio, can be utilized as the display area by eliminating the non-emitting area and widening the width of the transparent sustain electrode. Significantly improved results are obtained.

On the other hand, the process order of the ALiS-type PDP can be largely divided into a front plate process, a back plate process, and a post process, which will be briefly described as follows.

First, in the process of the front plate, a transparent electrode is formed on the glass substrate, a bus electrode is formed thereon, a transparent dielectric is coated on the entire surface, a transparent dielectric protective film (MgO) is formed, and then a seal for the post-process sealing. A seal layer is formed to complete the front plate.

Next, referring to the process of the back plate, the address electrode is formed on the glass substrate, the reflective film is entirely coated, the partition walls are formed, and the phosphor is formed to complete the back plate.

Finally, the front plate and the back plate are sealed for the later process, followed by the exhaust process, discharge gas is injected, and aging is performed to complete the ALiS-type PDP.

However, the conventional ALiS-type PDP as described above has increased in contrast from VGA (Video Graphics Array) with 640 × 480 pixels to XGA (Extended Graphics Array) with 1024 × 768 pixels. ratio was lowered, which is not suitable for home use, and the current increased by 40% to 50% compared to the VGA class due to various reasons such as an increase in the width of the transparent electrode, an increase in the aperture ratio, and an increase in the number of driving pixels. As a result, the voltage consumed also increased about 1.5 times. Accordingly, there is a need for a high voltage driving IC, and a problem arises in that the protective film is more severely damaged by sputtering in the panel, thereby greatly shortening the lifespan.

In addition, the screen printing method or the sand blasting method has been conventionally used in performing the series of processes for producing ALiS PDP. However, in the above process method, the use of the screen mask and the expensive paste are inevitable. Expensive production costs are another problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and an object thereof is to provide an improved PDP manufacturing method for reducing production costs, reducing power consumption, improving lifespan, and improving contrast ratio.

1A to 1E are views illustrating a process of manufacturing a front plate in an ALiS-type PDP manufacturing method according to an embodiment of the present invention.

Figures 2a to 2e is a view showing the process of the back plate manufacturing method in the ALiS method PDP manufacturing method according to an embodiment of the present invention.

* Brief description of symbols for the main parts of the drawings

110: glass substrate 120: etched groove

130: bus electrode 140: transparent electrode

150: black stripe 160: transparent dielectric

170: dielectric protective film

According to an aspect of the present invention, there is provided a plasma display panel forming method comprising: forming a groove having a size equal to that of a bus electrode in a region where a bus electrode is formed on an upper surface of a glass substrate; A second step of forming a bus electrode in the formed groove; Forming a transparent electrode pattern having an open portion having a black stripe width on the glass substrate on which the bus electrode is formed; Forming a black stripe on an open portion of the transparent electrode pattern; A fifth step of forming the first and second transparent dielectric layers on the upper part of the resultant product in which the fourth step is completed; And a sixth step of forming a dielectric protective film on the second transparent dielectric layer. In addition, the present invention provides a method of forming a plasma display panel, comprising: forming a groove having a size equal to that of the address electrode in a region where an address electrode is formed on an upper portion of a glass substrate; A second step of forming a bus electrode in the formed groove; A third step of forming barrier ribs on both sides of the address electrode at equal intervals; A fourth step of applying a reflective film between the barrier ribs and the upper portion of the address electrode; A fifth step of simultaneously firing the partition and the reflective film; And a sixth step of applying a phosphor on the reflective film.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. do.

1A to 1E are views illustrating a process of a front plate manufacturing method in an ALiS type PDP manufacturing method according to an embodiment of the present invention.

First, as shown in FIG. 1A, the groove 120 having the same size as the pattern of the bus electrode to be formed later is formed on the glass substrate 110 by using the etching equipment.

As shown in FIG. 1B, a bus electrode paste is filled in the groove 120 to form a pattern 130 of the bus electrode. In this case, the method used is a dispensing method, also called a dispensing method, which directly discharges the bus electrode paste into the grooves of the glass substrate 110 using air pressure to form the bus electrode pattern 130, and uses a screen. The bus electrode pattern 130 is formed by planarization with a squeeze for a screen printer.

Next, as shown in FIG. 1C, a transparent electrode ITO 140 is formed on the bus electrode pattern 130, and between the patterns of the formed transparent electrode 140 as shown in FIG. 1D. In order to improve the contrast ratio, a black stripe pattern 150 is formed to be in close contact with each other without gaps.

Next, the transparent dielectric layer 160 is formed on the upper surface of the transparent electrode pattern 140 and the black stripe pattern 150 by coating the entire surface, that is, beta printing, and is formed by laminating beta printing in two layers.

Finally, a protective layer such as, for example, MgO is applied to the entire surface of the transparent dielectric layer 160 of the laminated structure to complete the front plate.

By forming the groove 120 in the glass substrate 110 as described above, and forming the bus electrode 130, the bus electrode 130 can be lowered to about 2 μm compared with the height of 8 μm to 10 μm of the bus electrode formed by a conventional method. The current and the voltage can be reduced, and the use of the above-mentioned dispense method enables more precise high-definition pattern formation without expensive paste waste.

2A to 2E are views illustrating a process of the back plate manufacturing method in the ALiS-type PDP manufacturing method according to an embodiment of the present invention.

First, as shown in FIG. 2A, the groove 220 having the same size as the pattern of the address electrode to be formed later is formed on the glass substrate 210 by using the etching equipment.

As shown in FIG. 2B, an address electrode material is filled in the groove 220 to form a pattern 230 of the address electrode. At this time, the method used is a dispensing method, also referred to as a dispensing method of directly discharging the address electrode material into the groove of the glass substrate 210 using air pressure to form the address electrode pattern 230, the screen The address electrode pattern 230 is formed by flattening with a squeeze for a screen printer.

Next, as shown in FIG. 2C, the partition wall 240 is formed to be separated from the adjacent cells at regular intervals between the formed address electrodes 230.

Next, as shown in FIG. 2D, a reflective film (White back) 250 is applied to the side surface of the partition wall 240 and the upper portion of the glass substrate on which the address electrode 230 is formed. This is the same as the coating method of the phosphor in the conventional PDP production. In addition, the baking process time can be shortened by simultaneously baking the partition wall 240 and the reflective film 250 formed earlier than the conventional method.

Finally, as shown in FIG. 2E, the phosphor 260 is coated on the entire upper portion of the reflective film 250 to complete the back plate.

As described above, the address electrode 230 is formed in the same manner as the bus electrode 130 formed in the front plate manufacturing method, and then the partition wall 240 is formed, thereby causing misalignment during formation of the partition wall 240. And the reflective film 250 is applied to the side surface of the partition wall 240 and the upper surface of the glass substrate on which the address electrode 230 is formed, thereby maximizing the efficiency of the phosphor emission reflection when driving the PDP. Can increase the luminance.

Although the technical idea of the present invention has been described in detail according to the above preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

As the ALiS-type PDP manufacturing method according to an embodiment of the present invention as described above, it is possible to obtain the effect of reducing the production cost, the consumption current and voltage, the improvement of the life and the contrast ratio.

Claims (4)

In the plasma display panel forming method, Forming a groove having a size equal to that of the bus electrode in a region where a bus electrode on the glass substrate is to be formed; A second step of forming a bus electrode in the formed groove; Forming a transparent electrode pattern having an open portion having a black stripe width on the glass substrate on which the bus electrode is formed; Forming a black stripe on an open portion of the transparent electrode pattern; A fifth step of forming the first and second transparent dielectric layers on the upper part of the resultant product in which the fourth step is completed; And A sixth step of forming a dielectric protective film on the second transparent dielectric layer Method for forming a front plate of the plasma display panel comprising a. The method of claim 1, Forming the bus electrode is a front plate forming method of the plasma display panel, characterized in that formed by the dispensing method. In the plasma display panel forming method, Forming a groove having a size equal to that of the address electrode in a region where an address electrode on the glass substrate is to be formed; A second step of forming a bus electrode in the formed groove; A third step of forming barrier ribs on both sides of the address electrode at equal intervals; A fourth step of applying a reflective film between the barrier ribs and the upper portion of the address electrode; A fifth step of simultaneously firing the partition and the reflective film; And A sixth step of coating a phosphor on the reflective film; Back plate forming method of the plasma display panel comprising a. The method of claim 3, The method of forming a back plate of the plasma display panel, wherein the address electrode is formed by a dispensing method.