KR19980076383A - Electrode, Electrode Arrangement and Electrode Formation Method of Color Plasma Display Panel - Google Patents

Abstract

The present invention relates to an electrode, an array of electrodes, and a method for forming an electrode of a color plasma display panel, comprising: a plasma display panel having a plurality of grooves formed between the partition walls and the partition walls, wherein A plasma display panel having an electrode of a color plasma display panel comprising a plurality of grooves and a plurality of grooves formed between the partition walls and the partition walls, wherein the first color electrode, the second color electrode, and the third color electrode formed on the groove are repeatedly The arrangement of electrodes of the color plasma display panel and the method of forming the electrode are formed in the method of forming the electrodes of the color plasma display panel on the lower substrate, the barrier layer having a uniform thickness on the lower substrate. And on the partition layer Forming a barrier rib by forming a photoresist and removing unnecessary portions; depositing a thin film electrode to a predetermined thickness between the barrier rib and the barrier rib and on the photoresist; the photoresist remaining on the barrier rib and the thin film electrode Forming an electrode having a high adhesion on the lower substrate, including forming an electrode by removing the unnecessary portion of the electrode.

Description

Electrode, Electrode Arrangement and Electrode Formation Method of Color Plasma Display Panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to an electrode, an electrode arrangement, and an electrode forming method of a color plasma display panel of a lower substrate.

In general, a plasma display panel drives a pixel by forming a sustain electrode and an address electrode in a matrix form between an upper substrate and a lower substrate, and generates discharge therebetween to generate an image using ultraviolet rays generated therein. A flat panel display device to implement.

1 is a diagram illustrating a unit cell cross-sectional structure of a typical plasma display panel.

Referring to FIG. 1, a typical plasma display panel forms a pair of sustain electrodes 11 having a constant width and height on the same surface of the upper substrate 10, and prints the dielectric layer 12 on the sustain electrodes 11. And an upper structure formed by a method, wherein the protective layer 13 is formed on the dielectric layer 12 formed on the sustain electrode 11. In order to form an address electrode 15 having a predetermined width and height on the lower substrate 14, and to prevent crosstalk between adjacent cells occurring in the address electrode 15, the partition wall 16 is formed. And a substructure having phosphors 17 formed on the sidewalls of the partition walls 16 and the address electrodes 15.

An inert gas is enclosed between the upper structure and the lower structure to form a discharge region 18.

The operation of the plasma display panel configured as described above is as follows.

When a driving voltage is applied to the sustain electrode 11, surface discharge occurs in the discharge region 18 on the surfaces of the dielectric layer 12 and the protective layer 13 to generate ultraviolet rays 19.

Color display is performed as the fluorescent material of the surrounding phosphor 17 is excited by the generated ultraviolet light 19.

That is, the main component (space charge) existing in the discharge cell is accelerated by the applied driving voltage, the inert mixed gas filled with a pressure of about 400 to 500 torr in the discharge cell, that is, helium (He) as a main component 147 nm ultraviolet rays are generated when the inert gas is excited by colliding with a phenning mixed gas containing xenon (Xe), neon (Ne) gas, and the like.

Visible light is generated when the ultraviolet rays 19 collide with the phosphor 17 surrounding the address electrode 15 and the partition wall 16.

An electrode, an electrode array, and an electrode forming method of the plasma display panel configured as described above are as follows.

First, the sustain electrode 11 is formed on the upper substrate 10.

The sustain electrode 11 is copper (Cu), gold (Au), or the like.

In addition, a metal conductor such as nickel (Ni) or aluminum (Al) is formed on the lower substrate 14 by the address electrode 15 by a printing method.

When the upper and lower substrates thus formed are sealed with the sealant, a sealed space is formed.

At this time, the upper / lower structure seals the discharge gas into the space sealed by the sealant, and the panel sealed through the hole by combining a hole (not shown) and a gas injection glass tube (not shown) drilled in the lower corner portion. When evacuating the negative air and evacuating it, the degree of vacuum is usually about 10 ^-6 to 10 ^-8 torr.

The gas is injected by the gas injection device and the glass tube is sealed with heat to form a panel in which the discharge gas is completely sealed.

The plasma display panel configured as described above has a weak bonding force with the substrate because the lower electrode is formed by a printing technique, and when the substrate is heat-treated at a high temperature, the expansion rate is significantly different, so that an interface crack occurs at the contact surface with the substrate. There is a problem that this appears incompletely and the life is shortened.

The present invention has been made to solve the problems according to the prior art, an object of the present invention is to form an electrode having a high adhesion to the substrate to improve the discharge state and life, and also to form a reflective metal electrode layer on the entire groove The present invention provides an electrode, an electrode array, and an electrode forming method of a color plasma display panel to improve luminance.

1 is a view showing a unit cell cross-sectional structure of a general color plasma display panel;

2A to 2E are flowcharts illustrating an embodiment in which electrodes are formed on a lower substrate of a color plasma display panel according to the present invention;

3 is a partial view of the upper substrate and the lower substrate of the color plasma display panel according to the present invention sealed together;

4 is a view showing another embodiment in which an electrode is formed on a lower substrate of a color plasma display panel according to the present invention;

5 is a view showing another embodiment in which an electrode is formed on a lower substrate of a color plasma display panel according to the present invention.

Explanation of symbols for main parts of the drawings

10: upper substrate 11: sustain electrode

12 dielectric layer 13 protective layer

14: lower substrate 15: address electrode

16: partition 17, 24: phosphor

18: discharge area 19: ultraviolet light

20 partition wall 21 photoresist

22 groove 23 electrode

26, 27, 28: first, second and third color electrodes

In the plasma display panel according to the present invention, an electrode, an array of electrodes, and a method of forming an electrode include a metal thin film electrode having a predetermined thickness on the groove, the plasma display panel having a plurality of grooves formed between the partition walls and the partition walls. In a plasma display panel having an electrode of a color plasma display panel and a plurality of grooves formed between the partition wall and the partition wall, the first color electrode, the second color electrode and the third color electrode formed on the groove are repeatedly arranged. The electrode array of the color plasma display panel and the method of forming the electrode are formed in the method of forming the electrode of the color plasma display panel on the lower substrate, forming a partition layer having a uniform thickness on the lower substrate. And the photoresist on the partition layer. Forming a barrier rib by forming a gist and removing unnecessary portions; depositing a thin film electrode to a predetermined thickness between the barrier rib and the barrier rib; removing photoresist remaining on the barrier rib and unnecessary portions of the thin film electrode; To form an electrode.

Hereinafter, a preferred embodiment of the electrode, the electrode arrangement and the electrode forming method of the plasma display panel according to the present invention.

2A to 2E are flowcharts of forming an electrode on a lower substrate of the color plasma display panel according to the present invention.

Referring to FIG. 2, in order to form electrodes on the lower substrate of the color plasma display panel according to the present invention, as shown in FIG. 2A, the partition layer 20 is formed on the lower substrate 14.

Next, as shown in FIG. 2B, a photoresist 21 is formed on the barrier layer 20 at a predetermined interval.

Subsequently, as shown in FIG. 2C, when the exposed portion is etched, a partition wall is formed on the lower substrate 14.

Subsequently, as illustrated in FIG. 2D, an electrode 23 having a predetermined thickness is deposited on the lower substrate 14.

The electrode 23 is formed by thin film deposition, electron beam deposition, or electroplating.

The electrode 23 is a metal thin film such as gold (AU), chromium (Cr), copper (Cu), or the like.

Subsequently, as shown in FIG. 2E, when the unnecessary electrode 23 formed on the photoresist 21 is removed, the electrode 23 having a predetermined pattern is formed.

At this time, by using ultrasonic waves or by polishing the surface to remove the metal attached to the photoresist 21 and to remove the photoresist.

As shown in FIG. 2E, red, green, and blue phosphors 24 are repeatedly formed to have a predetermined thickness alternately at appropriate pixel positions. have.

At this time, the phosphor 24 is applied by an electrophoresis technique, and can also be formed by a printing method.

In addition, the phosphor 24 is a standard electron excitation phosphor 24.

Suspended additives are included to increase the cohesion of the applied phosphor 24. Suitable additives include powdered wax, combination with single or molten salt, acids, solvents or fluids thereof. It is included.

Application of the phosphor 24 minimizes two external connection pitches at opposite ends and reduces the number of connection of the crossover circuit required in manufacturing, as shown in FIG. 3. 26) and an electrode circuit arranged with one and two second color electrodes 27 respectively.

The shapes of the electrodes 23 are U-shaped, trapezoidal, semi-circular, and the like as shown in Figs. 2E, 4, and 5.

Therefore, the shape of the groove 22 and the electrode 23 can be a variety of shapes, the shape of the groove does not affect the discharge.

In addition, in the formation of the partition wall by etching, since the etching is isotropically etched, it is easiest to form a semicircular groove, and the degree of inclination can be made more sharp through the setting of the etching conditions.

As shown in FIG. 3, the electrode 23 is a first color electrode, a second color electrode and a third color electrode repeatedly arranged.

The first color electrode 26 extends from the first end of the upper substrate 10 to the lower substrate 14.

The second color electrode 27 extends from the upper substrate 10 to the second end of the lower substrate 14 facing the first end.

The third color electrode 28 alternately extends from the upper substrate 10 to the first end and the second of the lower substrate 14.

Thus, adjacent pairs of the electrodes 23 extend to opposite ends of the upper substrate 10 and are externally connected to suitable induction circuits.

Similarly, the electrodes 23 of the opposite lower substrate 14, including the partition 16, are externally connected to appropriate induction circuits, respectively.

The upper and lower structures seal the discharge gas into the space sealed by the sealant, and the panel portion sealed through the hole by combining a hole (not shown) and a gas injection glass tube (not shown) drilled in the lower edge portion thereof. When evacuating air and evacuating it, the degree of vacuum is usually about 10 ^-6 to 10 ^-8 torr.

The gas is injected by the gas injection device and the glass tube is sealed with heat to form a panel in which the discharge gas is completely sealed.

Since the metal electrode of the plasma display panel according to the present invention has a metal thin film structure, the interfacial bonding force of the metal is significantly increased, thereby improving discharge characteristics and improving lifetime.

In addition, there is an effect that can produce a plasma display panel of low cost and high resolution.

In addition, the electrode is formed in the entire groove, thereby reflecting the light emitted, thereby increasing the brightness, and the distance between the electrodes is short when the address signal is applied, so that the discharge is easily generated.

In addition, the groove shape may be various shapes, and the shape of the groove does not affect the discharge.

In addition, the partition wall formation by etching is the easiest to form a semi-circular groove since the etching is isotropically etched, and the degree of inclination can be further sharpened through the setting of the etching conditions.

Claims (17)

In the plasma display panel having a plurality of grooves formed between the partition wall and the partition wall, And a thin film electrode formed to a predetermined thickness on the groove. The method of claim 1, The thin film electrode may be formed of a U-shaped electrode. The method of claim 1, And the thin film electrode is formed of a trapezoidal electrode. The method of claim 1, The thin film electrode is a semi-circular electrode, characterized in that the electrode of the color plasma display panel. The method of claim 1, And the thin film electrode is deposited by thin film deposition, electron beam deposition, or electroplating. The method of claim 1, And the thin film electrode is a metal thin film electrode which is mixed with at least one of gold, chromium and copper. In the plasma display panel having a plurality of grooves formed between the partition wall and the partition wall, An array of electrodes of a color plasma display panel, wherein the first color electrode, the second color electrode, and the third color electrode formed on the groove are repeatedly arranged. The method of claim 7, wherein And the first color electrodes are arranged from the first end to the lower substrate of the upper substrate. The method of claim 7, wherein And the second color electrode is arranged from the upper substrate to the second end of the lower substrate facing the first end of the first substrate. The method of claim 7, wherein Wherein the third color electrodes are alternately arranged from the upper substrate to the first end and the second of the lower substrate. In the method of forming the electrode of the color plasma display panel on the lower substrate, Forming a barrier layer with a uniform thickness on the lower substrate; Forming a barrier rib by forming a photoresist on the barrier layer and removing unnecessary portions; Depositing a thin film electrode with a predetermined thickness between the barrier rib and the barrier rib and on the photoresist; And forming an electrode by removing an unnecessary portion of the photoresist and the thin film electrode remaining on the partition wall. The method of claim 11, wherein And the photoresist remaining on the barrier rib is removed by ultrasonic waves. The method of claim 11, wherein And the partition wall is formed by etching. The method of claim 11, wherein The electrode is a method of forming an electrode of a color plasma display panel, characterized in that the mixture is made of one or more of gold, chromium, copper. In the method of forming the electrode of the color plasma display panel between the partition wall and the partition wall, Forming a barrier rib by forming a photoresist on the barrier layer and removing unnecessary portions; Depositing a thin film electrode with a predetermined thickness between the barrier rib and the barrier rib and on the photoresist; Forming a U-shaped electrode by removing the photoresist and removing unnecessary portions of the thin film electrode. In the method of forming the electrode of the color plasma display panel between the partition wall and the partition wall, Forming a barrier rib by forming a photoresist on the barrier layer and removing unnecessary portions; Depositing a thin film electrode with a predetermined thickness between the barrier rib and the barrier rib and on the photoresist; Forming a trapezoidal electrode by removing the photoresist and removing unnecessary portions of the thin film electrode. In the method of forming the electrode of the color plasma display panel between the partition wall and the partition wall, Forming a barrier rib by forming a photoresist on the barrier layer and removing unnecessary portions; Depositing a thin film electrode with a predetermined thickness between the barrier rib and the barrier rib and on the photoresist; Forming a semi-circular electrode by removing the photoresist and removing unnecessary portions of the thin film electrode.