The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2002
Filed:
Jan. 12, 2000
Sung Ho Cho, Taegu-kwangyok-shi, KR;
Hyun Cheol Kim, Kyongsangbuk-do, KR;
Won Hyun Kim, Kyongsangbuk-do, KR;
Gill Young Jung, Kyongsangbuk-do, KR;
Ki Bog Son, Taegu-kwangyok-shi, KR;
Tae Kyu Kim, Kyongsangbuk-do, KR;
Dong Young Kim, Kyongsangbuk-do, KR;
LG Electronics Inc., Seoul, KR;
Abstract
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.