KR940020457A

KR940020457A - Deflection yoke with fork shunt

Info

Publication number: KR940020457A
Application number: KR1019940002893A
Authority: KR
Inventors: 마일로 앙드레; 뻬롱 다비드
Original assignee: 데니스 에이치. 어얼백; 톰슨 튜브스 앤드 디스플레이스, 에스. 에이.
Priority date: 1993-02-18
Filing date: 1994-02-18
Publication date: 1994-09-16
Also published as: MY110490A; KR100304020B1

Abstract

한쌍의 E형상 션트(23a,23b)는 내부 및 외부 수평 트랩 에러를 감소시키기 위해 편향 요크(18)의 상부 및 하부 각각의 부근에 배치된다. E형상 션트의 중심부(31)는내부 및 외부 E-W핀쿠션 래스터 왜곡의 크기간의 비를 감소시킨다.A pair of E-shaped shunts 23a, 23b are disposed near each of the upper and lower portions of the deflection yoke 18 to reduce internal and external horizontal trap errors. The central portion 31 of the E-shaped shunt reduces the ratio between the magnitudes of the inner and outer E-W pincushion raster distortions.

Description

Deflection yoke with fork shunt

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 음극선관상에 장착되는 본 발명의 양태를 구체화하는 편향요크의 측면도.1 is a side view of a deflection yoke embodying an aspect of the invention mounted on a cathode ray tube.

제2도는 음극선관상의 디스플레이 스크린으로부터 볼수 있는 제1도의 편향요크의 정면도.FIG. 2 is a front view of the deflection yoke of FIG. 1 as seen from the display screen on the cathode ray tube. FIG.

제3도는 제1도의 요크의 측면도.3 is a side view of the yoke of FIG.

Claims

A vacuum glass envelope, a display screen 11 disposed at one end of the envelope, a plurality of electron beams R, G, disposed at the second end of the envelope and forming a corresponding raster on the screen during deflection; A cathode ray tube 10 of an inline system having an electron gun assembly 15 generating B): a vertical deflection coil 18V and a horizontal deflection coil mounted around the envelope and generating a deflection field in the cathode ray tube; 18. A deflection device comprising a deflection yoke 16 having a core 17 made of a magnetically permeable material magnetically coupled to the vertical and horizontal deflection coils, wherein the deflection yoke 16 includes: Disposed adjacent to at least one of the deflection coils 18V between the beam inlet end and the beam outlet end and symmetrically about the X axis of the yoke, spaced apart from the center leg 31 and transversely. Deflecting device comprising the two outside legs (32a, 32b) and a pair of field formers (23a, 23b) comprising a member (30), each connected with a plurality of legs.

A vacuum glass envelope, a display screen 11 disposed at one end of the envelope, a plurality of electron beams disposed at the second end of the envelope and forming a corresponding raster on the screen during deflection (R, G) A cathode ray tube 10 of an inline system having an electron gun assembly 15 for generating B; A core mounted around the envelope and comprising a vertical deflection coil 18V and a horizontal deflection coil 18H for generating a deflection field in the cathode ray tube, and a magnetically permeable material magnetically coupled to the vertical and horizontal deflection coils. A deflection device comprising a deflection yoke (16) having a (17), said deflection yoke being disposed adjacent one of said deflection coils and positioned between a beam inlet end and a beam outlet end to modify said deflection field. 31) and a first field former (23a) having an outer leg (32a, 32b) spaced apart in the transverse direction and a member (30) connecting the plurality of legs together.

The deflecting device according to claim 2, wherein the field former (23a) is disposed at one of an upper end and a lower end of the Y axis of the yoke.

4. The deflection apparatus according to claim 3, further comprising a second field former 23b disposed on the other of the upper end and the lower end of the Y axis symmetrically to the first field former. .

3. Deflection apparatus according to claim 2, wherein the angle between the longitudinal axis of the center leg (31) and one of the outer legs (32a, 32b) is substantially less than 90 degrees (37 degrees).

4. A method according to claim 3, wherein at least one corresponding portion of the outer legs 32a, 32b is disposed in a different XY plane of the yoke and in each XY plane reduces the difference between the inner horizontal trap error and the outer horizontal trap error. Deflecting device, characterized in that it is arranged at different angular positions with respect to the Y axis of the plane.

7. Deflection apparatus according to claim 6, wherein the center leg (31) increases the ratio between the magnitude of the inner E-W pincushion distortion and the magnitude of the outer E-W pincushion distortion.

3. Deflection apparatus according to claim 2, wherein the field former (23a) is arranged in the yoke in such a way as to significantly increase the field distribution function V ₂ (Z) of the yoke.

3. Deflection apparatus according to claim 2, characterized in that the field former (23a) is arranged in the yoke in such a way as to significantly increase the degree of barrel field nonuniformity of the vertical deflection field to provide convergence of the beam.

3. Deflection apparatus according to claim 2, wherein the field former (23a) is arranged in the yoke in such a way as to significantly increase the field distribution function V ₄ (Z) of the yoke.

11. Deflection apparatus according to claim 10, wherein the peak value of the function V ₄ (Z) occurs in the vicinity of the end portion (30) of the field former (23a) away from the screen.

3. Deflection apparatus according to claim 2, wherein the connecting member (30) is disposed perpendicular to the direction of the longitudinal axis (AX ₃₁ ) of the center leg (31) and to the Z axis of the yoke (18).

3. Deflection apparatus according to claim 2, wherein the center leg (31) and the outer leg (32a, 32b) each extend in the Z-axis direction.

※ Note: The disclosure is based on the initial application.