JPH03210733A - Manufacture of display device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Fields of Application The present invention & friends Television image receiving plate Used in computer terminal displays, etc. This relates to a method of manufacturing an electron tube type flat panel display device.Conventional technology Return of electron tube type The practical application of flat panel display devices is progressing at a rapid pace.The external shape of the flat panel display device is a thin box-type (rectangular shape). The figure shows the vacuum evacuation and vacuum sealing process for such a box-shaped vacuum container, with one side of the container in cross section. Face Glass Gen This face glass and container 4
A vacuum container 10 is formed that houses an electrode structure 9 therein.Now, in order to bond the container 4 made of metal to the face glass 8 to form the vacuum container 10, the face glass 8
Even if the metal bonding member 6 is hermetically bonded with the low melting point solder glass 5, the metal container 4 is placed on the resistance bonding member 6 with the electrode structure 9 fixed on the face glass s. The joining member 6 and the container 4 are then hermetically welded together using the laser beam 3.The inside of the container 4 is then evacuated to a high vacuum via the exhaust pipe 7 by the exhaust device 1.In parallel with this evacuation, the entire container 11 is and finally seals the exhaust pipe 7 to manufacture the display device.Problems to be Solved by the Invention In the conventional manufacturing method described above, the connecting member 6 and the container 4
Even if the inside of the container is evacuated after being hermetically joined by laser welding, deformation will occur in the container 4 due to atmospheric pressure. 4 because it is joined with a laser.This joint tries to restrain the deformation of the container 4. Therefore,
Stress due to the above deformation is applied to the bonding member 6 (also applied to the solder glass 5), resulting in cracks in the low melting point solder glass 5 and cracks between the bonding member 6 and the low melting point solder glass 5. Peeling may occur, causing leaks, resulting in a defective product.Such symptoms (Table 1) This may occur at the beginning of the vacuum evacuation process of the vacuum container 10 (L). It is also possible that the above-mentioned cracks and other dust may not occur during the manufacturing process, but may occur after the product is shipped to the market. Reliable Method The present invention provides a method for manufacturing a display device that can solve the above problems even if the yield is significantly impaired.Means for Solving the ProblemsThe present invention solves the above problems. An airtight member is inserted between the component and the metal container, the container is evacuated in advance, and atmospheric pressure is applied to the container and the joining member.The joining member and container are airtightly joined using a laser beam. By using the above method, laser welding is performed after the container is deformed due to vacuum evacuation. Therefore, stress due to deformation of the container is not applied to the joint between the joining member and the solder glass, and the reliability of the joint is improved. Embodiment Figure 1 shows an embodiment of the manufacturing method of the present invention.
A metal bonding member 6 is hermetically bonded to the face glass 8 coated with phosphor using a low melting point solder glass 5. Next, the electrode structure 9 is fixed on the face glass 8. 2 and metal container 4 a
In the case of this embodiment, rubber with silicone grease coated slightly thickly on the surface may be used as the airtight member 2. The exhaust pipe 7 can be removed by the exhaust system 1.
The inside of the container 4 is evacuated via the laser beam 3.
The joining member 6 and the container 4 are hermetically joined at the inner circumference of the airtight member 2.
For example, there is no need to evacuate to a high vacuum of 10-'Torr. Even if it is a vacuum, for example ITorr
Even in such a low vacuum, there is virtually no difference in atmospheric pressure applied to the container 4, and there is no difference in the amount of deformation of the container. Therefore, the airtight member 2 does not necessarily require a high degree of sealing performance. ~ Then, after the joining member 6 and the container 4 are joined by laser welding, the inside of the container is evacuated to a predetermined degree of vacuum while baking. After causing the deformation of the container 4. Laser welding of the container and the joining member is a good addition to the joining member. There is no stress generated by the deformation of the container due to vacuum evacuation as in the conventional example, and cracks in the solder glass are avoided. This can be reliably prevented, and the reliability of the joint can be dramatically improved. The reliability of the joining is also improved compared to the conventional method. This is not necessary in the embodiments, and the process can be simplified and shortened.a Effects of the InventionAs is clear from the above explanation, +'w The present invention is capable of achieving low melting point It can reliably prevent cracks in solder glass and peeling of bonded parts, and can greatly improve the reliability of display devices.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a main part showing an embodiment of the method for manufacturing a display device according to the present invention. FIG. 2 is a cross-sectional view of a main part showing a conventional manufacturing method. Laserbee A4...Container 5...Solder glass included 6...Joining member 8...
Face glass included lO...vacuum container

Claims (1)

[Claims] A display device comprising a face glass, a metal joining member joined to the outer periphery of the face glass, and a metal container installed on the joining member, the joining member and the container being joined by welding. An indication characterized in that an airtight member is disposed between the joining member and the container, and after the inside of the container is evacuated, the airtight member and the container are joined by welding at an inner peripheral portion of the airtight member. Method of manufacturing the device.