KR930005542Y1 - Apparatus for measuring a series degree of electron gun - Google Patents

Abstract

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Description

Serial measuring device of electron gun

1 is a side view schematically showing an in-line measurement device of an electron gun according to the present invention.

2 is a perspective view showing an extract of the transfer means of the electron gun serial flow rate measuring device shown in FIG.

* Explanation of symbols for main parts of the drawings

2: projector 3: table

4: Image illuminator 11: Base plate

12: first micrometer 13: the first block

14 second block 15 second micrometer

20: electron gun

The present invention relates to an apparatus for measuring a series of electron guns for cathode ray tubes, and more particularly, to an apparatus for measuring a series of electron beam passing holes formed in each electrode of an electron gun and a series of measuring devices for measuring an interval between electron beam passing holes.

Typically, the electron gun for the cathode ray tube is to maintain a predetermined interval by fixing a plurality of electrodes, R, G, B three electron beam passing holes formed in the bead glass. In the electron gun configured as described above, a predetermined potential is applied to each electrode fixed to the bead glass, so that an electrostatic lens is formed between the electron beam through holes of each electrode, and the electron beam is focused and accelerated by the electrostatic lens, thereby screening the cathode ray tube. It will be injected into the cotton. Therefore, it is required to manage the accuracy of the spacing between the electron beam passing holes formed in the series and the electron beam passing holes formed in the electrode. However, in the related art, since there is no device capable of accurately measuring the electron beam passing hole seriality and the distance between the electron beam passing spaces of the electron gun, the precision of the electron gun electrode assembly jig has been improved to improve the seriality of the electron gun assembled therein. The electrode assembly jig has limitations in reducing the manufacturing error, and there is a problem in that the series of electron beam through holes and their spacing cannot be quantified.

The present invention has been made to solve the above problems, and provides a device for measuring the series of electron tube gun for cathode ray tube which can contribute to the improvement of electron gun quality by visualizing by digitizing and visualizing the series of electron beam through hole formed in the electrode of each electron gun. There is a purpose.

In order to achieve the above object, the present invention provides a projector, a transfer means installed on a table of the projector, and conveys the front, rear, left and right, by holding an electron gun, a virtual funnel installed between the transfer means and an image illuminator of the projector and the projector and the screen. And a data process for comparing the measured value shown on the screen with the set value of the electron gun.

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

As shown in FIG. 1, a device for measuring the series of a cathode ray tube electron gun according to the present invention 1 is provided with a conveying means 10 for conveying the electron gun 20 back and forth, left and right on the table 3 of the projector 2. The virtual panel 5 is installed on the table 3 between the transfer means 10 and the image illuminator 4 of the projector 2. The projector 2 is further provided with a data processor 30 for comparing the measured values measured by the projector 2 with the set measured values to determine the state of serialness of the electron gun 20. Here, the conveying means 10 is installed in the base pull rate 11 fixed on the table 3 and the base plate 11 so as to be slidable in the front, rear, left and right directions as shown in FIG. The first block 13 is installed on the one side of the base plate 11 by the first micrometer 12 supported by the bracket 12a so as to be movable finely, and the first block 13 is slidable. A vertical upper portion of the second block 4 by means of a second block 14 provided with a holding portion 14a of the electron gun 20 and a small port 15a provided on one side of the first block 13. The second micrometer 15 is installed at the first block 13 and moves up and down the second block 14 with respect to the first block 13.

Referring to the operation of the device for measuring the series of electron gun for cathode ray tube according to the present invention configured as described above are as follows.

In order to measure the series diagram of the electron gun 20, the assembly of the electrode is completed, the electron gun 20 is first fixed to the holding part 14a of the second block 14, and the virtual funnel is installed on the front of the image illuminator 4. Insert into the neck of (5). The center of each electron beam through hole set in the design of the electron gun and the distance between the centers are displayed on the screen of the projector 2, and the set data is input to the data process 30.

Then, the light beam is irradiated from the image illuminator 4 so that the electron beam passing hole of the electron gun 20 appears on the screen. In this state, the first block 13 and the second block 14 are moved finely as the first and second micrometers 12 and 15 so that the centers of the electron beam passing holes appearing on the screen and on the screen. Center the electron beam through hole set at.

In this way, the data process 30 judges the coincidence state between the previously inputted data and the center of the electron gun to be measured displayed on the screen, and the distance between the electron beam through holes of the electron gun to be measured and the eccentric state of the electron beam through hole. As the superposition state of the electron beams formed on each electrode, the electron guns are compared and judged in series and displayed on the screen. In addition, since the electron gun is measured in the state where the electron gun is inserted into the neck portion of the virtual funnel, the same degree of linearity measuring device may also measure the rotation state when the electron gun is inserted into the neck portion.

As described above, the device for measuring the degree of series of the electron gun for the cathode ray tube can be visualized and displayed on the screen in order to contribute to the improvement of the quality of the gun, and furthermore, there is an advantage that the cathode ray tube can be manufactured with high resolution.

Claims (2)

A device for measuring the series of a cathode ray tube electron gun provided with a table and a projector provided with screens and image illuminators on both sides of the table, wherein the electron gun 20 is provided on the table 3, and is conveyed back, front, left, and right. And a set value of the virtual funnel 5 installed between the conveying means 10, the conveying means 10 and the image illuminator 4 of the projector 2, and the electron beam passing hole displayed on the screen. And a data process (30) for comparing and determining the measured values of the electron beam passing holes of the electron gun (20). According to claim 1, wherein the conveying means is installed on the base plate 11 and the base plate 11 fixed to the table (3), so that the front and rear, right and left sliding of the bracket 12a installed on one side thereof A second block having a first block 13 installed to be micromovable by one micrometer 12 and a gripping portion 14a of the electron gun 20 to be slidably installed on the first block 13. 14 and a support 15a provided on one side of the first block 13 to be installed on the vertical portion of the second block 14 and to the second block 14 with respect to the first block 13. Electron gun series degree measurement device for a cathode ray tube, characterized in that it is provided with a second micro meta (15) to raise and lower.