Lg Electronics Inc.

Dong Young Kim

Sung Ho Cho

Hyun Cheol Kim

Ok Tae Kim

Won Hyun Kim

Tae Kyu Kim

Ki Bog Son

Soo Keun Lee

Gill Young Jung

In-line type electron gun in a color cathode ray tube including a pre-focusing lens part having at least two electrodes for focusing electron beams, a main lens part having two, or more than two electrodes for focusing the electron beams onto a screen, and at least one electrostatic field controlling electrode in the electrodes of the main lens part having a center electron beam pass through hole and two outer electron beam pass through holes, wherein each of the outer electron beam pass through holes has a form a circular hole and a rectangular hole are combined therein, the rectangular hole having a height 'V ' greater than a vertical diameter 'V ' of the center beam pass through hole of the electrostatic field controlling electrode, thereby permitting an excellent focusing and improving assembly work.

In-line type electron gun in cathode ray tube

Electron gun for a color CRT having main lens forming electrodes wherein a depth from a rim portion of an anode to an electrostatic field control electrode is deeper than the depth from the rim portion of a cathode to the electrostatic field control electrode, and a DQ lens action of a center beam portion formed by the DQ lens unit being weaker than the DQ lens action of an outer electron beam portion, whereby reducing a spot diameter by enlarging a main lens diameter and correcting inconsistency between a center beam and an outer beam in the DQ lens.

Electron gun for color cathode ray tube

Growing community of inventors

Kyongsangbuk-do, South Korea

Dong Young Kim