KR970030152A - How to improve the breakdown voltage characteristics of cathode ray tube - Google Patents

Abstract

The present invention relates to a method for improving the breakdown voltage characteristic of a cathode ray tube, and more specifically, electrolytic polishing of each electrode constituting an electron gun, and then performing a knocking process including a G2 and G3- ground method to provide a cathode ray tube. It is to improve the withstand voltage characteristics.

To this end, the first step of electropolishing the electrode constituting the electron gun, the second step of assembling each electrode passed through the first step, and the electron gun passed through the second step is sealed in the neck of the funnel A third step of evacuating the inside of the cathode ray tube and a high voltage is applied to the G6 electrode 6, which is the high voltage electrode of the electron gun, which has passed through the third step, and the low voltage electrodes G1, G2, G4 electrodes (1) (2) (4) And grounding the remaining electrodes, and performing a first knocking process by polluting the remaining electrodes, a fifth process of aging to remove the deposition material deposited on the electrode part after the fourth process; High pressure is applied to the G6 electrode 6 which is the high voltage electrode of the electron gun which has passed through the fifth process, and the G3, G5-B, C, D (3) (5b) (5c) (5d) electrodes which are the medium voltage electrodes are grounded, The remaining electrodes are floated to perform the second knocking step, which is performed in the sixth step in turn, or under the configuration of the electron gun. A first step of assembling each electrode, a second step of electropolishing the electrode of the assembled electron gun, and enclosing the electron gun subjected to the second fixing to the neck of the funnel, and then evacuating the inside of the cathode ray tube. After performing the third process and the fourth process of aging to remove the deposited material deposited on each electrode of the electron gun, the first and second knocking processes are sequentially performed to improve the withstand voltage characteristics of the cathode ray tube. will be.

Description

How to improve the breakdown voltage characteristics of cathode ray tube

As this is a public information case, the full text was not included.

2 is a process diagram showing an embodiment of the present invention.

3 is a process diagram showing another embodiment of the present invention.

Claims (5)

The first step of electropolishing the electrode constituting the electron gun, the second step of assembling each electrode passed through the second step, and the electron gun passed through the second step are sealed in the neck portion of the funnel, and then Applying high pressure to the G6 electrode, which is the high voltage electrode of the electron gun which passed the third process and the third process of exhausting the inside, grounds the G1, G2, and G4 electrodes, which are the low voltage electrodes, and pollutes the remaining electrodes to make the first knocking process. And a fifth step of aging to remove the deposited material deposited on the electrode part after the fourth step, and the G6 electrode which is a high voltage electrode of the electron gun which has passed the fifth step. And applying the medium voltage electrodes G3, G5-B, C, and D to ground, and performing the second knocking process by performing the second knocking process by following the remaining electrodes by following the method of improving the withstand voltage characteristics of the cathode ray tube. . The method of claim 1, wherein during electrolytic polishing of the electrode in the first step, only the G6 electrode which is the high voltage electrode and the G5-A electrode adjacent to the high voltage electrode of the medium voltage electrode are electropolished. 2. The improved withstand voltage characteristic of a cathode ray tube according to claim 1, wherein the electrolytic polishing of the electrode in the first step involves electropolishing only the G6 electrode, which is a high voltage electrode, and the G5-A, B, C, D, and G3 electrodes, which are medium voltage electrodes. Way. 2. The improved withstand voltage characteristic of the cathode ray tube according to claim 1, wherein the electrolytic polishing of the electrode in the first step involves electropolishing only the G6 electrode, which is the high voltage electrode, the G5-A electrode, and the G2 and G4 electrodes, which are the low voltage electrodes. Way. A first step of assembling each electrode constituting the electron gun, a second step of electropolishing the electrode of the assembled electron gun, and an electron gun passed through the second step to encapsulate the neck portion of the pennel, and then A third step of evacuating the interior, a fourth step of aging to remove the deposition material deposited on each electrode of the electron gun, and a high voltage applied to a G6 electrode which is a high voltage electrode of the electron gun which has undergone the fourth step The G1, G2, and G4 electrodes, which are the electrodes, are grounded, and the other electrode is subjected to a rooting by applying a high pressure to the G6 electrode, which is a high voltage electrode of the electron gun which has undergone the first knocking process. The piezoelectric electrodes G3, G5-B, C, and D electrodes are grounded, and the remaining electrodes are followed by a sixth step of performing a second knocking step by following the floating process.