KR100318547B1 - jig for clamping plasma display panel when aging thereof - Google Patents

Abstract

The present invention relates to a jig for aging of a plasma display panel that can prevent a defect due to a poor connection of electrodes and prevent damage of a PDP substrate due to a pressing force for connecting the electrodes. The aging jig is fixedly disposed on an inspection table provided with a driver for an aging process in which a plurality of bracket members drive a high voltage of the plasma display panel. A plurality of connectors are formed in the vertical hole is connected to each bracket member and the pin through the vertical direction. Two pairs of clamping members are fixed to each connector and coupled so as to slide with the first clamping plate and the first clamping plate on which the lower clamping surface is provided, which is provided with an electrode or an elastic member connected to the driving portion on the upper portion, and the driving portion on the upper portion. And a second clamping plate provided with an upper clamping surface provided with an elastic member or an electrode connected thereto. The first clamping plate and the second clamping plate are connected by a plurality of clamping lever members to slide in the vertical direction, and a tensile force by a plurality of tension springs is applied.

Description

Jig for clamping plasma display panel when aging

The present invention relates to an aging jig for a plasma display panel (hereinafter referred to as a PDP), and more particularly, when the PDP is clamped by the jig to perform an aging test of the PDP, it is caused by an uneven clamping force. An aging jig of a plasma display panel having a structure capable of preventing breakage of a PDP.

In general, PDP is a display device that uses a gas discharge phenomenon for image display, and since the overall thickness can be manufactured to 10 cm or less, its thickness and weight can be significantly reduced as compared to a cathode ray tube display device using an electron gun. In addition, since there is an advantage of improving the narrowness of the viewing angle which is a weak point of the liquid crystal display device, it is emerging as a next generation display device.

As can be seen from the DC-type PDP structure shown in FIG. 1, the PDP is disposed so that the front substrate P1 and the rear substrate P2 formed of transparent glass arranged up and down overlap each other, and the front substrate P1. ) Is provided with a first electrode (X) and a partition wall (B), the rear substrate (P2) has a second electrode (Y) and the front substrate (P1) so that the electrodes (X, Y) cross each other and face each other. Sutured to. The partition B defines each pixel, and a predetermined phosphor is coated in the pixel, and a discharge gas is injected therein. By such a configuration, the PDP emits phosphors provided at predetermined positions between the substrates P1 and P2 by gas discharge generated by voltages applied to the two electrodes X and Y, so that a necessary image is produced by the PDP. Displayed on the screen.

On the other hand, in the PDP as described above, the voltage causing the discharge between the two electrodes (X, Y) is usually designed at a rated voltage of about 150 to 250V, in the general PDP manufacturing process, the electrodes (X, Y) as described above The silver is provided to be printed on the edge of the substrate (P1, P2), foreign matter remains inside the electrodes (X, Y). Due to the remaining of foreign matter, when the panel is completed, when the rated voltage is applied to each of the electrodes (X, Y), the discharge occurs between the electrodes (X, Y) due to the foreign matter remaining inside the electrodes (X, Y). It will not occur.

Accordingly, after completion of the PDP, when the high voltage of about twice the rated voltage is applied and the discharge is started and maintained, the driving voltage at which the discharge is generated at the rated voltage is stabilized after a certain time has elapsed. Therefore, after completion of the PDP, such a high voltage driving process is performed, which is commonly referred to as an activation or aging process.

A jig for applying a high voltage to the PDP is used to perform the aging fixation. In the conventional application of a high voltage by a jig, a rectangular rim in which both ends of two conductive blocks are connected by an insulating block, whereby the PDP is placed To form. A conductive coil elastically contacting each electrode of the PDP is disposed on the upper surface of each conductive block, while a square jig for clamping the edge of the PDP to prevent the flow of the PDP is disposed above the PDP. Roughly semi-circular grooves are formed in the lower side of the inner side of the jig and the outer side of the conductive block so that when the jig clamps the PDP, they are joined to each other to form a circular groove. By inserting a key into a groove formed in a circular shape, the jig and the conductive block are joined to each other.

The important thing in the aging jig is the connection between the PDP and the conductive block, and when the PDP and the conductive block are not completely connected to each other, the connected part is lighted, but the unconnected part is black because the current is not supplied. Appears on the PDP, making it impossible to carry out the aging process.

However, although the conventional aging jig uses a conductive coil for accurate connection between the PDP and the block, in the case of long-term use, the elasticity of the conductive coil is weakened or lost, so that the PDP and the conductive block are not accurately coupled to each other. There was a problem. Therefore, the conventional aging jig having such a structure had to frequently replace the conductive coils. Furthermore, since the conductive coils must be connected to each electrode of the PDP one by one, a conductive coil having a pitch corresponding to the width between each electrode of the PDP is required. There was a problem that had to be made.

In order to solve the problems of the conventional aging jig, the "aging jig for plasma display panel" according to the Korean Utility Model Registration No. 98-16588 filed on September 2, 1998 by the present applicant has been proposed.

Such a conventional aging jig for PDP is shown in Figs. 2 and 3, as shown in Figs. 2 and 3, the high voltage to the PDP 101 on the bottom of the inspection table 100 is placed on the PDP 101 is placed. The driving unit to be applied is disposed, and a pair of slots 111 are formed along both sides of the test table 100, and the connection electrode 120 electrically connected to the driving unit is disposed in the slot 111. An insulating tape that prevents electricity from passing through the test bench 100 and radiates heat is attached to the contact surface between the connection electrode 120 and the test bench 100. The connection electrode 120 protruding from each slot 111 is provided with a lower rubber 122 to provide elasticity when clamping both edges of the PDP 101, and the surface of the lower rubber 122 has a PDP 101. The conductive thin film is coated so that electricity is supplied to the electrode provided at the edge of the C), and electricity is supplied to the PDP 101 through the conductive thin film.

On the other hand, in order to ensure the connection between the conductive thin film and the PDP 101, a means for pressing the edge of the PDP 101, that is, the electrode portion, is provided. Such means is provided with brackets 130 on both sides of each slot 111, the brackets 130 are connected to each other by the rotation shaft 132, one end of the rotation shaft 132 is rotated by the bracket 130 Possibly supported, the other end penetrates the other bracket. The pressing plate 133 for pressing the PDP 101 is installed on the rotation shaft 132, and an upper rubber 134 for pressing the PDP 101 is installed below the pressing plate 133.

The conventional aging jig having the structure as described above reliably presses both edges of the PDP 101 by the pressure plate 133 pivoted to the pressing position by the lever 160, as shown in FIG. When 101 is pressed by the pressure plate 133, the electrode of the PDP 101 and the connection electrode 120 of the inspection table 100 are reliably connected, thereby preventing black lines from appearing on the PDP due to poor connection. do.

However, the aging jig of the conventional plasma display panel as described above is provided to the connecting electrode and the PDP by the upper rubber provided at the lower portion of the pressing plate and the lower rubber provided at the connecting electrode by the pressing plate pivoting by the lever. Although there is an advantage that the connection between the two is securely performed, when the pressing force of the pressure plate pivoted by the manually operated lever is not constant, the substrate made of transparent glass may be damaged by bending of the substrate by the pressing force of the pressure plate. In addition, there is a problem that breakage due to bending of the substrate due to pressing occurs more frequently when aging the PDP provided with electrodes at four edges.

Accordingly, an object of the present invention is to provide a jig for aging of a plasma display panel which can prevent a defect due to a poor connection of electrodes and prevent breakage of the PDP substrate due to a pressing force for connecting the electrodes.

1 is a cross-sectional view showing the structure of a general plasma display panel.

2 is a perspective view showing an aging jig of a conventional plasma display panel.

3 is a cross-sectional view illustrating a state in which both edges of the plasma display panel are clamped by the aging jig illustrated in FIG. 2.

4 is a perspective view illustrating an aging test stage of the plasma display panel having an aging jig according to the present invention.

5 is an exploded perspective view of the aging jig illustrated in FIG. 4.

FIG. 6 is a cross-sectional view illustrating a state in which the plasma display panel is clamped by an aging jig taken along the line VI-VI of FIG. 4.

FIG. 7 is a cross-sectional view illustrating a state in which the plasma display panel is released from the clamping state of the plasma display panel shown in FIG. 6.

Figure 8 is a perspective view showing the structure of the clamp of the aging jig used when the clamping member according to the present invention is divided into a plurality of pieces.

(Explanation of symbols for the main parts of the drawing)

1: jig for aging 2: inspection table

3: bracket member 4: connector

5 bolt shaft 7 clamping member

8: first clamping plate 9: second clamping plate

10 electrode 11 elastic member

12: clamping lever member 13: fixing piece

14 lever 15 clamping lever body

16: tension spring 17: connecting piece

18: axis

An object as described above includes: an inspection table provided with a driving unit for an aging process of driving a high voltage of a plasma display panel; A plurality of bracket members standing upright and fixed to the inspection table; A plurality of connectors having a long hole connected to each of the bracket members and pins in a vertical direction; A first clamping plate which is fixed to each connector and is provided with a lower clamping surface provided with an electrode or an elastic member connected to the driving part on the upper part, and is slidably coupled to the first clamping plate and is connected to the driving part on the upper part A second clamping plate provided with an upper clamping surface on which a member or an electrode is installed, the first and second clamping plates comprising: a clamping member to which a tension force by a tension spring is applied; And a plurality of clamping lever members connecting the first and second clamping plates of the clamping member such that the first clamping plate and the second clamping plate slide in the vertical direction. The aging jig of the plasma display panel according to the present invention can be achieved.

In the above, the upper and lower clamping surfaces of the opposing pair of clamping members are provided with the electrode and the elastic member, respectively, and the other pair of upper and lower clamping surfaces are provided with the elastic member and the electrode.

When the plasma display panel is clamped by the upper and lower clamping surfaces, the electrode is preferably formed of a metal cloth to mitigate the impact of the clamping on the substrate.

In the above, the clamping members are separated into a plurality of pieces to be adjusted to the position of the electrode according to the size of the plasma display panel, wherein the unused clamping members are separated from the connecting shaft.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

4 is a perspective view illustrating an aging test stage of a plasma display panel having an aging jig according to the present invention. As illustrated in FIG. 1, the aging jig 1 of the PDP 101 according to the present invention includes a driving unit for driving the PDP 101 at a high voltage for an aging process of the PDP 101 on a square inspection table 2. Not shown) is provided. At the bottom of the inspection table 2, as shown in more detail in Figures 5 to 7, a plurality of bracket members 3 are upright fixedly arranged.

A through hole 3b is formed in the upright portion 3a of the bracket member 3, and a connector 4 having a substantially hexahedron shape is located inside the bracket member 3. The connector 4 has a long hole 4 formed in a vertical direction in a direction facing the upright portion 3a of the bracket member 3, and the bracket member 3 and the connector 4 have a bolt shaft 5 penetrated therethrough. After passing through the ball 3b and the long hole 4a, the nuts 6 are fastened and connected to each other. Therefore, the connector 4 can move in the direction of the long hole 4a by the bolt shaft 5 fixed to the bracket member 3 passing through the long hole 4a.

The first clamping plate 8 constituting the clamping member 7 is fixed to the connector 4 so that the first clamping plate 8 can also move up and down with respect to the bracket member 3. The clamping member 7 is provided with two pairs of front, rear, left and right to form a rectangular shape as shown in FIG. 1, and the bracket member 3 is located at the end of each clamping member 7.

The clamping member 7 constitutes a first clamping plate 8 and a second clamping plate 9, as can be seen from FIGS. 5 to 7, wherein the first clamping plate 8 is connected to the drive via a wire. A lower clamping surface is provided on which the elastic member 11 formed of an electrode 10 or rubber having a slightly softer property is installed. The electrode 10 is preferably formed of a metal cloth to mitigate the impact of clamping on the substrate of the PDP 101 when the PDP 101 is clamped by the upper and lower clamping surfaces of the clamping member 7.

The second clamping plate 9 is slidably coupled with the first clamping plate 1, and is provided with an upper clamping surface on which an elastic member 11 or electrode 10, which is connected to the drive unit, is installed.

The first clamping plate 8 and the second clamping plate 9 are connected to each other by the clamping lever member 12. That is, the clamping lever member 12 is coupled so that one end 15a of the main body 15 can be pivoted on the fixing piece 13 provided on the side of the first clamping plate 8, and the clamping lever member ( The body 15 of 12 is coupled to be pivotable on the second clamping plate 9. The lever 14 of the clamping lever member 12 is pivotally coupled to the body 15.

Therefore, when the lever 14 is turned to pivot with respect to the body 15, the first clamping plate 8 and the second clamping plate 9 slide relative to each other and move to approach or move away. The clamping operation of the PDP 101 of the clamping member 7 by the sliding motion of the first clamping plate 8 and the second clamping plate 9 by such a lever 14 will be described later with reference to FIGS. 6 and 7. It demonstrates in more detail below.

In addition, the first clamping plate 8 and the second clamping plate 9 are elastically connected to each other by a plurality of tension springs 16 so that a tension force by the tension springs 16 acts toward each other. Approach

Referring back to FIG. 4, the PDP 101 is disposed such that the front substrate disposed above and the rear substrate disposed below overlap each other, and the front substrate is provided with electrodes at the longitudinal edges of the lower surface. The substrate is provided with electrodes at the transverse edge of the top surface. Therefore, an elastic member 11 is provided on the upper clamping surface of the pair of clamping members 7a which are located in the longitudinal direction of the clamping members 7 and face each other, and an electrode of the front substrate of the PDP 101 on the lower clamping surface. An electrode 11 to be connected is provided, and an electrode connected to an electrode of the back substrate of the PDP 101 on the upper clamping surface of the pair of clamping members 7b which are positioned laterally and facing each other among the clamping members 7. (11) is provided with an elastic member 11 on the lower clamping surface.

The operation of the aging jig of the plasma display panel according to the present invention having the structure as described above will be described with reference to FIGS. 6 and 7.

FIG. 6 is a cross-sectional view illustrating a state in which a plasma display panel is clamped by an aging jig taken along the line VI-VI of FIG. 4. As shown in FIG. 6, each of the first clamping plates 8 of the clamping members 7 which face each other by the lever 14 of the clamping lever member 12 being flipped up moves upward and faces each other. Each second clamping plate 9 of the member 7 is moved downward, so that the electrodes 10 provided on the lower clamping surface provided on the upper portion of the first clamping plate 8 are connected to the front substrate of the PDP 101. An elastic member 11 connected to the electrode formed on the lower surface and provided on the upper clamping surface provided under the second clamping plate 9 presses the front substrate to clamp the front substrate. Therefore, the electrode 10 and the electrode provided on the front substrate of the PDP 101 are reliably connected by the pressing force of the elastic member 11.

When the elastic member 11 provided on the upper clamping surface provided below the second clamping plate 9 presses the front substrate, when the bending occurs on the front substrate formed of transparent glass, the clamping members 7 are It flows in the direction of arrow A of FIG. 6 by bending of a front substrate. That is, when bending occurs in the front substrate due to the difference in the clamping forces of the clamping members 7 facing each other by some situation, the bending force of the front substrate is transmitted to the first clamping plate 8 of the clamping member 7. do. By the bending force of the front substrate, the first clamping plate 8 is fastened to the bolt shaft 5 in which the long hole 4a of the connector 4 connected to the first clamping plate 8 is fastened to the bracket 2. Therefore, by being raised and lowered, it flows in the bending direction of the front substrate, thereby preventing damage to the front substrate due to excessive clamping force.

FIG. 7 is a cross-sectional view illustrating a state in which the plasma display panel is released from the clamping state of the plasma display panel shown in FIG. 6. As shown in FIG. 7, the lever 14 of the clamping lever member 12 is turned down so that the first clamping plate 8 moves downward while the second clamping plate 9 moves upward. By doing so, the clamping of the front substrate of the PDP 101 can be released.

Meanwhile, in the aging jig of the plasma display panel according to the present invention, the clamping member 7 for clamping the substrate of the PDP 101 may be preferably adjusted to an appropriate size according to the position of the electrode according to the size of the PDP 101. have.

8 is a perspective view showing the structure of the clamp of the aging jig used when the clamping member according to the present invention is divided into a plurality of pieces. As shown in FIG. 8, the first clamping plate 8 and the second clamping plate 9 having a predetermined size are connected to each other by the clamping lever member 12, and the first clamping plate 8 is long. It can flow up and down by the connector 4 with which (4a) was formed. A certain number of clamping members 7 can be arranged along the axis 18, with the clamping lever member 12 provided on each clamping member 7 being arranged transversely through the connecting piece 17. ), And therefore the clamping lever members 12 are manipulated to cause the clamping member 7 to clamp the PDP 101 by manipulation of the shaft 18.

At this time, the unused clamping members 7 are separated from the shaft 18, so that the substrate of the PDP 101 and the clamping member used when clamping the substrate of the PDP 101 by the clamping member 7 used. Avoid interference to (7). Therefore, the length of the shaft 18 on which the clamping members 7 are installed has a length corresponding to the width and length of the PDP 101 of the largest size, and the length of the clamping member 7 installed on the shaft 18. The size and number can be changed as appropriate depending on the size of the PDP 101.

According to the aging jig of the plasma display panel according to the present invention having the structure as described above, it is possible to prevent a failure due to poor connection of the electrodes, while preventing the damage of the PDP substrate by the pressing force for connecting the electrodes. Can be.

In addition, even when the plasma display panel has a different size, since the clamping members are composed of a plurality of pieces, clamping members that are used while matching the position of the electrode provided on the substrate of the plasma display panel are used, By separating from the clamping position, an aging test of the plasma display can be performed.

Claims (4)

An inspection table provided with a driver for an aging process for driving the plasma display panel at a high voltage; A plurality of bracket members standing upright and fixed to the inspection table; A plurality of connectors having a long hole connected to each of the bracket members and pins in a vertical direction; A first clamping plate which is fixed to each connector and is provided with a lower clamping surface provided with an electrode or an elastic member connected to the driving part on the upper part, and is slidably coupled to the first clamping plate and is connected to the driving part on the upper part A second clamping plate provided with an upper clamping surface on which a member or an electrode is installed, the first and second clamping plates comprising: a clamping member to which a tension force by a tension spring is applied; And a plurality of clamping lever members for connecting the first and second clamping plates of the clamping member so that the first clamping plate and the second clamping plate slide in the vertical direction. The upper and lower clamping surfaces of the pair of opposing pairs of clamping members are provided with the electrodes and the elastic members, respectively, and the pair of upper and lower clamping surfaces are provided with the elastic members and the electrodes. Aging jig for plasma display panel. The jig for aging of a plasma display panel of claim 1, wherein the electrode is formed of a metal cloth. The jig for aging of a plasma display panel according to claim 1, wherein the clamping members are separated into a plurality of pieces so that the clamping members can be adjusted to a position of an electrode according to the size of the plasma display panel.