KR930014680A

KR930014680A - Color CRT tube with luminance uniformity

Info

Publication number: KR930014680A
Application number: KR1019910023796A
Authority: KR
Inventors: 나건수
Original assignee: 이헌조; 주식회사 금성사
Priority date: 1991-12-21
Filing date: 1991-12-21
Publication date: 1993-07-23

Abstract

본 발명은 휘도 균일성을 갖는 칼라브라운관의 제조 방법에 관한 것으로, 특히 브라운관 전면의 중심부와 주변부의 휘도차를 줄이도록 하여 브라운관의 진 영역에 걸쳐 균일한 위도를 갖도록 한 것이다.The present invention relates to a method for producing a color brown tube having luminance uniformity, and in particular, to reduce the luminance difference between the central portion and the peripheral portion of the front surface of the CRT so as to have a uniform latitude over the true region of the CRT.

일반점을 칼라브라운관의 전면에서 중심부에 비해 주변부의 퓨리터 여유도가 다소 떨어지게 되는데 이를 보상하기 위한 방식으로 주변부의 BM폭을 중심부보다 다소 크게 설계하는데 이로 인해 칼라브라운관의 휘드 불균일을 초래하게 되는 문제가 발생하였다.In the front of the color-brown tube, the margin of furrier margin is slightly lower than that of the central part. To compensate for this, the BM width of the peripheral part is designed to be slightly larger than that of the center, which causes the unevenness of the color-brown tube. Occurred.

본 발명은 형광체의 도포 두께에 따른 휘도특성을 이용, 주변부는 형공체의 도포두께에 따른 상대회도 특성을 최대가 되게 도포하고, 중심부는 주변부에 비해 회도를 떨어뜨리는 방법에 의해 브라운관의 전영역에 걸쳐 균일한 휘도를 갖도록 한 것이다.The present invention utilizes the luminance characteristics according to the coating thickness of the phosphor, the peripheral portion is applied to the maximum relative relative characteristics according to the coating thickness of the mold cavity, the central portion of the entire area of the CRT by the method of dropping the ash compared to the peripheral portion It is intended to have a uniform brightness over.

Description

Color CRT tube with luminance uniformity

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도 본 발명에 의한 칼라 브라운관의 BM 구성도 (가) BM의 구조를 보인 전면도, (나) BM 및 형광체의 도포 상태를 보인 단면도.2 is a BM configuration diagram of a color CRT according to the present invention. (A) A front view showing the structure of the BM, (B) A cross-sectional view showing the application state of the BM and the phosphor.

Claims

In the color-brown tube in which the BM width is designed to be twice as large as the center of the periphery to have the purity margin, in the case of small particle phosphors of 5 to 6 μm so as to maximize the luminance characteristic of the periphery, the coating is applied at 1.7 to 20 mg / cm 2. In the case of a neutral phosphor having a diameter of 9 to 18㎛, it is applied at 2.8 to 3.2 mg / ㎠, the center is thicker than the periphery of the color-brown tube having a uniform uniform brightness over the entire area.

The color CRT tube having luminance uniformity according to claim 1, wherein a phosphor thickness at a central portion of the CRT tube is applied thinner than a peripheral portion.

※ Note: This is to be disclosed by the original application.