KR19990002075A - Sealing vacuum exhaust device for field emission display device - Google Patents

Abstract

The present invention relates to a sealing vacuum exhaust device for a field emission display device, and more specifically, to minimize the thickness by making a panel without exhaust tubing of the field emission display device, and to increase the vacuum degree by using an RF coil. A sealing vacuum exhaust device for a field emission display device, which includes a cylindrical body (30) having a vacuum exhaust port (22), an RF coil (12) formed at the center of an upper side of the body (30), and the RF coil. A cylinder 18 provided on the lower side of the cylinder 12 so as to be movable and a removable aluminum foil 20 are formed on the upper side of the cylinder 18, and a sealing paste 8 is placed thereon. It is configured to be.

Description

Sealing vacuum exhaust device for field emission display device

The present invention relates to a sealing vacuum exhaust device of a true emission display device, and more particularly, to make a panel free of exhaust tubules of the field emission display device, thereby minimizing the thickness and using a radio frequency (RF) coil. A sealing vacuum exhaust device for a field emission display device capable of increasing the degree of vacuum inside a panel by sealing the panel.

Recently, with the rapid development of ultra-high-density semiconductor manufacturing technology and ultra-high vacuum technology, research on new micron-sized tripolar vacuum tube devices has been vigorous, and new flat panel displays having only the advantages of CRT and LCD by applying these devices to displays Pay attention to develop.

The field emission display device is a type of flat panel display, comprising a tip- or wedge-type cathode that emits electrons and an anode coated with a phosphor, and inducing electron emission from a plurality of micro tips, thereby generating electrons. By colliding with the phosphor of the anode where the transparent conductive film is formed, the phosphor is stimulated to excite the outermost electrons of the phosphor, and is configured to display a desired image display using light generated in the process of transition.

Therefore, in order to emit light of the above-mentioned phosphor, electrons emitted from the emitter of the field emission display device must not have any scattering while flying to the phosphor, and high vacuum can extend the life of the field emission display device. Many researches have been conducted on the vacuum technology of the field emission display device.

In general, the emission and sealing technology for the field emission display device uses a method of heating and fusing the tubular part by using a custom pipe or exhausting it by using a vacuum vent formed in a panel and sealing it with a sealing material (sealing paste). There is a way.

The method using the customs is a big disadvantage that the amount of gas generated by melting the glass during fusion is a big disadvantage, and the second method using the exhaust port is a high vacuum by generating a significant amount of gas in the heater for heating the sealing paste used as a sealing material There is a disadvantage that can not achieve the sealing.

Therefore, it is a goal of the exhaust and sealing technology of the field emission display device to significantly reduce a large amount of outgassed by the above two methods.

In order to solve the above disadvantages, the RF heating method is used, which removes the customs and exhausts through the exhaust port, and heats the sealing material (sealing paste) used at this time.

In addition, since the sealing material (sealing paste) is not directly heated by the RF heating method, a method of heating the metal plate indirectly by inserting a metal plate in the middle and heating the metal plate by RF is used.

Therefore, it is an object of the present invention to reduce the thickness of the panel to a minimum by manufacturing the panel by exhausting the panel through an air outlet without a custom tube and sealing it with a sealing material (sealing paste) and heating the sealing paste used as the sealing material to heat the RF. The present invention provides a sealing exhaust device for a field emission display device that can significantly reduce the amount of gas generated and easily produce a high vacuum panel.

1 is a view showing a sealing vacuum exhaust device of the field emission display device of the present invention.

Explanation of symbols for the main parts of the drawings

8: sealing paste 10: metal plate

12: RF coil 18: cylinder

20: aluminum foil 22: vacuum exhaust port

30: body

In order to achieve the object of the present invention as described above, the sealing vacuum exhaust device of the field emission display device of the present invention, a cylindrical body having a vacuum exhaust port, an RF coil formed in the center of the upper side of the body, and the RF coil A cylinder is installed on the lower side of the cylinder, and a metal plate or aluminum foil is formed on the upper side of the cylinder, and a sealing paste is placed thereon.

The configuration of the present invention configured as described above will be described in detail below with reference to the accompanying drawings.

1 is a view showing a sealing vacuum exhaust device of the field emission display device of the present invention.

In order to evacuate and seal the panel 2 in which there is no exhaust tubing and the exhaust port 4 is formed, a cylindrical body 30 having a vacuum exhaust port 22 is formed, and the upper side center of the body 30 is formed. A donut-shaped RF coil 12 is formed thereon.

A cylinder 18 is installed at the lower side of the donut-shaped RF coil 12 so as to be movable.

And on this cylinder, the metal plate 10 heated by the RF heating method is formed.

Moreover, the aluminum foil 20 is formed in the upper side of the said cylinder 18 so that separation is possible, and the sealing paste 8 is put on it.

In addition, the upper side of the cylinder 18, it is preferable to form a ceramic rod 14 to prevent heat conduction.

The upper side of the body 30 of the vacuum exhaust device configured as described above is installed at the inlet of the exhaust port 4 formed in the panel 2, and then through the vacuum exhaust port 22 formed in the body 30. Vacuum evacuation.

Then, the exhaust plate 4 of the panel 2 is sequentially placed on the upper side of the ceramic rod 14 formed in the cylinder 10, and the metal plate 10, the aluminum foil 20, and the sealing paste 8 are exhausted. (4) Push up to seal.

The sealing paste 8 sealing the exhaust port 4 is attached onto the RF coil 12 by RF heating.

In order to avoid contact with the sealing paste 8 having different thermal expansion coefficients, the metal plate 10 is made of a flexible metal such as aluminum foil as an insertion layer to prevent adhesion to each other.

Therefore, according to the configuration of the present invention, it is possible to manufacture a panel without customs, thereby minimizing the thickness, and high vacuum can be obtained by heating the sealing paste by using an RF coil, which has the effect of high clarity and life extension. .

Claims (4)

A cylindrical body 30 having a vacuum exhaust port 22, an RF coil 12 formed at the center of the upper side of the body 30, and a cylinder installed in a movable manner on the lower side of the RF coil 12 ( 18) and a detachable aluminum foil (20) formed on the upper side of the cylinder (18), and a field emission display characterized in that the sealing paste (8) is placed on the aluminum foil (20). Sealing vacuum exhaust device of the device. 2. The sealing vacuum exhaust device of a field emission display device according to claim 1, wherein an upper side of said cylinder (18) is formed of a ceramic rod (14). 2. The sealing vacuum exhaust device of a field emission display device according to claim 1, wherein the RF coil (12) has a donut shape. 2. The sealing vacuum exhaust device of a field emission display device according to claim 1, wherein a metal plate (10) having the same thermal expansion coefficient as the sealing paste (8) is formed on the lower side of the aluminum foil (20).