KR890000832Y1 - An electron gun - Google Patents
An electron gun Download PDFInfo
- Publication number
- KR890000832Y1 KR890000832Y1 KR2019850016822U KR850016822U KR890000832Y1 KR 890000832 Y1 KR890000832 Y1 KR 890000832Y1 KR 2019850016822 U KR2019850016822 U KR 2019850016822U KR 850016822 U KR850016822 U KR 850016822U KR 890000832 Y1 KR890000832 Y1 KR 890000832Y1
- Authority
- KR
- South Korea
- Prior art keywords
- electron
- electron beam
- electron gun
- electrode
- lens system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/48—Electron guns
- H01J2229/4824—Constructional arrangements of electrodes
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
내용 없음.No content.
Description
제1도는 일반적인 음극선관의 개략단면도.1 is a schematic cross-sectional view of a typical cathode ray tube.
제2도는 일반적인 전자총의 개략단면도.2 is a schematic cross-sectional view of a general electron gun.
제3도는 종래의 전자총에서 주렌즈계의 등전위 곡선을 보인 설명도.3 is an explanatory diagram showing an equipotential curve of the main lens system in the conventional electron gun.
제4도는 본 고안의 전자총에서 주렌즈계의 등전위 곡선을 보인 설명도.4 is an explanatory diagram showing an equipotential curve of the main lens system in the electron gun of the present invention.
제5도는 본 고안에 의한 주렌즈계를 통과하는 양측 전자빔의 수렴원리를 보인 설명도.5 is an explanatory view showing the principle of convergence of both electron beams passing through the main lens system according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
9, 9' : 비이드유리 10 : 캐소드구조체9, 9 ': bead glass 10: cathode structure
11 : 제1전극 12 : 제2전극11: first electrode 12: second electrode
13, 13' : 제3전극 13'a, 13'b, 13'c : 전자빔통과공13, 13 ': third electrode 13'a, 13'b, 13'c: electron beam through hole
14, 14' : 제4전극 14'a, 14'b, 14'c : 전자빔통과공14, 14 ': fourth electrode 14'a, 14'b, 14'c: electron beam through hole
본 고안은 음극선관 후방의 네크부에 설치되어 3개의 전자빔을 발사하는 음극선관용 전자총에 있어서, 주렌즈계를 형성하여 전자빔을 접속시키는 제3전극 및 제4전극에 관한 것으로, 특히 전자빔의 콘버젼스(convergence)특성을 향상시킬 수 있게한 음극선관용 전자총의 주렌즈계에 관한 것이다.The present invention relates to a third electrode and a fourth electrode for forming a main lens system to connect an electron beam in an electron gun for a cathode ray tube installed in the neck portion of the cathode ray tube to emit three electron beams, in particular the convergence of the electron beam. The present invention relates to a main lens system of an electron gun for cathode ray tubes, which can improve the (convergence) characteristic.
일반적으로 음극선관은 제1도에 도시한 바와같이 음극선관(1)후방의 네크부(2 )에 전자총(3)을 설치하고, 그 전자총(3)에서 발사되는 적색 및 녹색, 청색 전자빔(4a) (4b)(4c)은 네크부(2)에 설치된 편향요크(5)로 일정각도를 편향시킨 후 새도우마스크 (6)를 통해 형광면(7)에 입사시켜 화면을 구성한다.Generally, as shown in FIG. 1, a cathode ray tube is provided with the electron gun 3 in the neck part 2 behind the cathode ray tube 1, and the red, green, blue electron beam 4a which is emitted from the electron gun 3 is carried out. (4b) (4c) is a deflection yoke (5) provided in the neck portion 2 by deflecting a predetermined angle and then enters the fluorescent surface (7) through a shadow mask (6) to compose a screen.
그리고, 전자총(3)은 제2도에 도시한 바와같이 한쌍의 비이드유리(9)(9')에 열전자를 방출하는 캐소드구조체(10) 및 제1-제4전극(11)(12)(13)(14)이 일정간격을 유지하면서 배열되어 제1전극(11)으로는 방출된 열전자들을 제어하고, 제2전극(12)으로는 가속하며, 주렌즈계를 형성하는 제3 및 제4전극(13)(14)의 대향면에서는 집속시키고 있는데, 종래의 전자총의 주렌즈계는 제3도에 도시한 바와같이 제4전극(14)의 전자빔통과공(14a)(14b)(14c)내벽을 수직으로 세워 원통형으로 형성하였다.As shown in FIG. 2, the electron gun 3 includes the cathode structure 10 and the first-fourth electrodes 11 and 12 that emit hot electrons to the pair of bead glasses 9 and 9 '. Third and fourth (13) and (14) arranged to maintain a constant interval to control the hot electrons emitted to the first electrode 11, accelerated to the second electrode 12, forming a main lens system The main surfaces of the conventional electron guns are focused on the opposite surfaces of the electrodes 13 and 14. As shown in FIG. 3, the inner beams of the electron beam passing holes 14a, 14b and 14c of the fourth electrode 14 are shown. Was formed vertically to form a cylinder.
이와같이된 종래의 전자총의 주렌즈계는 전극장이 길어지므로 제3전극(13)에 비교적 높은 전압이 인가된 상태에서는 주렌즈계에서의 전자빔(4a)(4b)(4c)의 발산각이 키집속각이 커지게 된다. 따라서 화면의 중앙부에서는 초점특성이 대단히 양호하나 불균일한 자장 공간에서 전자빔(4a)(4b)(4c)을 편향시킬 경우에는 편향수차를 받게 되어 초점의 균일성이 저하되고, 또한 비점수차가 발생되어 초점의 균일성이 더욱 저하되는 결함이 있었다.Since the main lens system of the conventional electron gun has a long electrode length, the divergence angle of the electron beams 4a, 4b, and 4c in the main lens system is the key focusing angle in a state where a relatively high voltage is applied to the third electrode 13. Will become large. Therefore, in the center of the screen, the focusing characteristics are very good, but when the electron beams 4a, 4b, and 4c are deflected in a non-uniform magnetic field, they are subjected to deflection aberration, resulting in deterioration of focus uniformity and astigmatism. There was a defect that the uniformity of focus was further lowered.
일반적으로 음극선관(1)은 네크부(2)에 색순도 보정용 마그네트(8) 또는 콘버젼스 보정용 마그네트를 설치하여 음극선관(1)의 여러가지 조립오차를 보정하고 있으나, 종래의 전자총의 주렌즈계에 있어서는 주렌즈계의 중앙의 통과공(14b)을 통과하는 녹색 전자빔(4b)에 비하여 양측의 적색 및 청색 전자빔(4a)(4c)의 수렴정도가 매우 작으므로 음극선관(1)화면의 콘버젼스가 나빠 색의순도 및 초점특성이 열화되었다.In general, the cathode ray tube 1 is provided with a color purity correction magnet 8 or a convergence correction magnet in the neck portion 2 to correct various assembly errors of the cathode ray tube 1, but in the main lens system of a conventional electron gun In contrast, the convergence of the red and blue electron beams 4a and 4c on both sides is very small compared to the green electron beam 4b passing through the through hole 14b in the center of the main lens system. Poor color purity and focusing characteristics deteriorated.
또한, 상기 제3전극(13)의 양측 통과공(13a)(13c)을 중심축으로 편심시켜 콘버젼스를 향상시키는 인라인형 전자총이 알려져 있으나, 이는 양측의 전자빔이 중앙측으로 너무 편향되어 콘버젼스가 그다지 향상되지 않는 결점이 있었다.In addition, although an inline type electron gun is known, which improves convergence by eccentricizing both through holes 13a and 13c of the third electrode 13 with a central axis, this is because the electron beams on both sides are too deflected toward the center side, so that the conversion There was a flaw that did not improve much.
본 고안은 이와같은 종래의 결함을 감안하여 제4전극의 전자빔 통과공을 원뿔형으로 형성하여 양측의 적색 및 청색 전자빔의 수렴정도를 크게 함으로써, 음극선관 화면의 콘버젼스를 향상시킬 수 있게 안출한 것으로, 이를 첨부된 제4도 및 제5도의 도면에 의하여 상세히 설명하면 다음과 같다.In view of such a conventional defect, the present invention forms a conical shape of the electron beam through hole of the fourth electrode to increase the convergence of the red and blue electron beams on both sides, thereby improving the convergence of the cathode ray tube screen. If this is described in detail with reference to the accompanying drawings 4 and 5 as follows.
한쌍의 비이드유리(9)(9')에 캐소드구조체(10) 및 제1-제4전극(11)(12)(1 3')(14')을 일렬로 배열한 음극선관용 전자총에 있어서, 제4도에 도시한 바와같이 주렌즈계를 형성하는 제3 및 제4전극(13')(14')의 양측 전자빔통과공(13'a)(14'a),(13'c )(14'c)의 중심축 이심율이 약 0.2㎜정도 되게 하여 그 전자빔통과공(13'a)(14'a), (13'c)(14'c)을 통과하는 적색 및 청색 전자빔(4a)(4c)이 일정 콘버젼스각(θ)In a cathode ray tube electron gun in which a cathode structure 10 and a first-fourth electrode 11, 12 (1 3 ', 14') are arranged in a pair of bead glass 9, 9 '. As shown in FIG. 4, both electron beam passing holes 13'a, 14'a, and 13'c of the third and fourth electrodes 13 'and 14' forming the main lens system are shown. The red and blue electron beams 4a passing through the electron beam passing holes 13'a, 14'a and 13'c, 14'c with the central axis eccentricity of the 14'c being approximately 0.2 mm. (4c) this constant convergence angle (θ)
[수학식 1][Equation 1]
여기서, K는 비례상수, d는 이심율, D는 전극의 내경, Eb는 인가된 전압, Vf는 초점전압이다.Where K is the proportionality constant, d is the eccentricity, D is the inner diameter of the electrode, E b is the applied voltage, and V f is the focus voltage.
을 갖게하고, 제4전극(14')의 전자빔통과공(14'a)(14'b)(14'c)을 원뿔형으로 형성하여 전방의 직경이 후방의 직경보다 작게 형성한 것이다.And the electron beam through holes 14'a, 14'b and 14'c of the fourth electrode 14 'are formed in a conical shape so that the diameter of the front side is smaller than that of the rear side.
이와 같이 구성된 본 고안 전자총의 주렌즈계는 제3 및 제4전극(13')(14')에 일정전압을 인가하면, 그 제3 및 제 전극(13')(14')의 전자빔통과공(13'a) (14'a),(13'b )(14'b),(13'c) 14'c)에는 제4도에 도시한 바와같이 등전위곡선이 형성되고, 이때, 제4전극(14')의 양측 전자빔통과공(14'a)(14'c)에서는 중앙의 전자빔통과공 (14'b)에 가까운곳의 등전위 곡선의 경사도가 완만하게 형성되고, 먼곳의 등전위 곡선의 경사도는 가까운곳에 비하여 급격하게 형성되므로 전자빔통과공 (14'a)(14'c)을 통과하는 적색 및 청색 전자빔(4a)(4c)은 종래의 주렌즈계에 비하여 중앙의 전자빔통과공 (14b)을 통과하는 녹색 전자빔(4b)방향으로 보다 더 수렴하게 된다.The main lens system of the electron gun of the present invention configured as described above has a predetermined voltage applied to the third and fourth electrodes 13 ′ and 14 ′, and the electron beam passing holes of the third and fourth electrodes 13 ′ and 14 ′ 13'a) 14'a, 13'b, 14'b, and 13'c, 14'c) form an equipotential curve as shown in FIG. In both electron beam passing holes 14'a and 14'c of 14 ', the slope of the equipotential curve near the center electron beam passing hole 14'b is formed smoothly, and the slope of the distant equipotential curve is formed. Is rapidly formed in comparison with the near, so the red and blue electron beams 4a and 4c passing through the electron beam passing holes 14'a and 14'c have a central electron beam passing hole 14b as compared to the conventional main lens system. Further convergence is made in the direction of passing green electron beam 4b.
즉, 제5도에 도시한 바와같이 경사도가 급격한 등전위면(15a)을 통과하는 전자빔(4a)(4c)의 집속간(ø1)이 경사도가 완만한 등전위면(15b)을 통과하는 집속각(ø2)보다 크므로 양측의 전자빔통과공(14'a)(14'c)을 통과하는 적색 및 청색 전자빔(4a) (4c)이 녹색전자빔(4b)방향으로 수렴하게 된다.That is, as shown in FIG. 5, the focusing angle ø 1 of the electron beams 4a and 4c passing through the equipotential surface 15a with a steep inclination passes through the equipotential surface 15b with a gentle slope. Since it is larger than ø 2 , the red and blue electron beams 4a and 4c passing through the electron beam passing holes 14'a and 14'c on both sides converge in the green electron beam 4b direction.
이상에서 설명한 바와같이 본 고안은 제4전극(14')의 전자빔통과공(14'a) (14'b)(14'c)을 위가 좁고 아래가 넓은 원뿔형으로 형성하여 녹색 전자빔(4b)에 대한 적색 및 청색 전자빔(4a)(4c)의 콘버젼스 특성을 향상시킴으로써, 화면의 초점특성은 물론 색순도가 향상되는 효과가 있다.As described above, the present invention forms the electron beam through hole 14'a, 14'b, 14'c of the fourth electrode 14 'into a narrow conical shape with a narrow upper side and a wider lower side. By improving the convergence characteristics of the red and blue electron beams 4a and 4c, the focus characteristic of the screen as well as the color purity are improved.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850016822U KR890000832Y1 (en) | 1985-12-14 | 1985-12-14 | An electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850016822U KR890000832Y1 (en) | 1985-12-14 | 1985-12-14 | An electron gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870011281U KR870011281U (en) | 1987-07-16 |
| KR890000832Y1 true KR890000832Y1 (en) | 1989-03-25 |
Family
ID=19247228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019850016822U Expired KR890000832Y1 (en) | 1985-12-14 | 1985-12-14 | An electron gun |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR890000832Y1 (en) |
-
1985
- 1985-12-14 KR KR2019850016822U patent/KR890000832Y1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| KR870011281U (en) | 1987-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1177514A (en) | Color picture tube having an improved inline electron gun with an expanded focus lens | |
| JPH05225929A (en) | Electron gun for color cathode ray tube | |
| JPH0393135A (en) | Color picture tube | |
| KR930007583Y1 (en) | Electron gun for cathode-ray tube | |
| US5382872A (en) | Electron gun for a color cathode ray tube | |
| JP2673111B2 (en) | Electron gun for beam spot distortion prevention | |
| US4608515A (en) | Cathode-ray tube having a screen grid with asymmetric beam focusing means and refraction lens means formed therein | |
| US4621215A (en) | Convergence system for a multi-beam electron gun | |
| US5291094A (en) | Multi-focusing type electron gun for color cathode ray tubes | |
| KR890000832Y1 (en) | An electron gun | |
| US4399388A (en) | Picture tube with an electron gun having non-circular aperture | |
| KR940000847B1 (en) | Electron gun | |
| JPH05307938A (en) | Electrode structure for forming main lens of electron gun for color picture tube | |
| KR100232156B1 (en) | Electron gun for color crt | |
| KR940003244Y1 (en) | Electron gun for cathode-ray tube | |
| JPH07169410A (en) | In-line type electron gun for color picture tube | |
| KR960012415B1 (en) | Electron gun in crt | |
| KR0129381Y1 (en) | Color gun | |
| KR100777716B1 (en) | Screen Electrode for Electron Gun for Cathode Ray Tube and Electron Gun with the Same | |
| KR910001570Y1 (en) | Electron gun of inline type crt | |
| KR950002739B1 (en) | Electron gun for c-crt | |
| KR0142850B1 (en) | Electron gun for colored cathode ray tube | |
| KR100355446B1 (en) | Electron gun for Color cathode ray tube | |
| KR970006038B1 (en) | Electrode structure of electron gun for crt | |
| KR910004064Y1 (en) | Electron gun for color cathode ray tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
| UA0108 | Application for utility model registration |
St.27 status event code: A-0-1-A10-A12-nap-UA0108 |
|
| UA0201 | Request for examination |
St.27 status event code: A-1-2-D10-D11-exm-UA0201 |
|
| UG1501 | Laying open of application |
St.27 status event code: A-1-1-Q10-Q12-nap-UG1501 |
|
| E902 | Notification of reason for refusal | ||
| UE0902 | Notice of grounds for rejection |
St.27 status event code: A-1-2-D10-D21-exm-UE0902 |
|
| P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
| P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
| UG1604 | Publication of application |
St.27 status event code: A-2-2-Q10-Q13-nap-UG1604 |
|
| E701 | Decision to grant or registration of patent right | ||
| UE0701 | Decision of registration |
St.27 status event code: A-1-2-D10-D22-exm-UE0701 |
|
| REGI | Registration of establishment | ||
| UR0701 | Registration of establishment |
St.27 status event code: A-2-4-F10-F11-exm-UR0701 |
|
| UR1002 | Payment of registration fee |
St.27 status event code: A-2-2-U10-U11-oth-UR1002 Fee payment year number: 1 |
|
| UR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-UR1001 Fee payment year number: 4 |
|
| UR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-UR1001 Fee payment year number: 5 |
|
| UR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-UR1001 Fee payment year number: 6 |
|
| UR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-UR1001 Fee payment year number: 7 |
|
| UR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-UR1001 Fee payment year number: 8 |
|
| FPAY | Annual fee payment |
Payment date: 19961214 Year of fee payment: 9 |
|
| UR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-UR1001 Fee payment year number: 9 |
|
| LAPS | Lapse due to unpaid annual fee | ||
| UC1903 | Unpaid annual fee |
St.27 status event code: A-4-4-U10-U13-oth-UC1903 Not in force date: 19980326 Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE |
|
| UN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-UN2301 St.27 status event code: A-5-5-R10-R11-asn-UN2301 |
|
| UC1903 | Unpaid annual fee |
St.27 status event code: N-4-6-H10-H13-oth-UC1903 Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE Not in force date: 19980326 |
|
| UN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-UN2301 St.27 status event code: A-5-5-R10-R11-asn-UN2301 |
|
| UN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-UN2301 St.27 status event code: A-5-5-R10-R11-asn-UN2301 |
|
| UN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-UN2301 St.27 status event code: A-5-5-R10-R11-asn-UN2301 |
|
| P22-X000 | Classification modified |
St.27 status event code: A-4-4-P10-P22-nap-X000 |