CN1203516C - Projection tube and preparation technology and special equipment used for preparing projection tube - Google Patents
Projection tube and preparation technology and special equipment used for preparing projection tube Download PDFInfo
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- CN1203516C CN1203516C CN 02139445 CN02139445A CN1203516C CN 1203516 C CN1203516 C CN 1203516C CN 02139445 CN02139445 CN 02139445 CN 02139445 A CN02139445 A CN 02139445A CN 1203516 C CN1203516 C CN 1203516C
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Abstract
The present invention relates to a projection tube and a preparation technology thereof and a special device used for preparing the projection tube. The negative curved surface of a glass casing of the projection tube is coated with fluorescent powder, and the tube neck of the projection tube is coated with graphite; the inside of the tube is plated with an aluminum film, and an electron gun is arranged at the tail part of the projection tube. The electron gun is composed of a modulation electrode G1, an accelerating electrode G2, a first anode electrode G3, a focusing electrode G4 and a second anode electrode G5, wherein the electrodes G2, G3 form prefocusing, the electrodes G3, G4 form an auxiliary lens, and the electrodes G4, G5 form a main lens; 32KV anode voltage is supplied to the electrodes G3, G5, and 7 to 9KV focusing voltage is supplied to the electrode G4. The preparation technology of the projection tube comprises organic film coating, inner graphite coating, aluminium film manufacturing and pressurization processing. The present invention has the characteristics of high focusing voltage, unipotential electrostatic focusing electron gun, prefocusing function enhancement, phase difference and spherical aberration reduction, no aluminum foam or aluminum splash phenomenon, etc. The present invention enhances the definition of the projection tube, and is adaptive for producing the projection tubes of various specifications, such as 16CM, 19CM, 22CM, etc.
Description
Technical field
The present invention relates to a kind of projection tube, particularly the projection tube of rear-projection TV use.
Background technology
It is not high that most brightness is managed by existing various black and white or colour projection, poor definition, proof voltage is bad, the electron gun design is reasonable inadequately, especially first anode electrode G3 and the external diameter of focusing electrode G4 are under situation about equating, along with the increase of electric current, spot definition also increases, influence drop shadow effect, prior art can not satisfy the requirement of projection tube definition.Simultaneously, it is also reasonable inadequately that the electrode flange is handled, and do not reach the requirement of withstand voltage of projection tube.
Summary of the invention
The purpose of this invention is to provide a kind of high brightness, high definition, high withstand voltage projection tube.
Realize that technical scheme of the present invention is to solve like this: the present invention includes glass bulb, on the negative curved face screen of glass bulb, scribble fluorescent powder membrane, projection tube neck graphitization layer, aluminizer in the pipe, the afterbody of projection tube is equipped with electron gun, said electron gun has comprised modulator electrode again, the place ahead at modulator electrode is equipped with negative electrode, the rear of modulator electrode is provided with accelerating electrode, the rear of accelerating electrode is provided with first anode electrode, the rear of first anode electrode is provided with focusing electrode, the rear of focusing electrode is provided with the second plate electrode, accelerating electrode, first anode electrode, focusing electrode, the port of second plate electrode all is provided with crimping, accelerating electrode and first anode electrode constitute prefocus, and first anode electrode and focusing electrode constitute attachment lens, and focusing electrode and second plate electrode constitute main lens, the 32KV anode voltage is added in respectively on first anode electrode and the second plate electrode, and the 7-9KV focus voltage is added on the focusing electrode.
The present invention compared with prior art has following characteristics:
(1) the G2 utmost point and G3 utmost point pre-focusing action strengthen, and the aberration of prefocus lens can be effectively reduced;
(2) the G2 utmost point adopts thick film chip architecture (limit, hole thins processing);
(3) adopt the multipole type of focusing of the G3 utmost point and the G4 utmost point, the G4 utmost point and the G5 utmost point, reduced the Shang Pingjiao of electron beam;
(4) adopt the version of moving behind the main lens position, reduced the amplification coefficient of electron beam;
(5) electrode diameter adopts non-isometrical design, has effectively reduced spherical aberration;
(6) crimping is carried out at the two ends of the accelerating electrode of electron gun, first anode electrode, focusing electrode and handle, effectively prevented parasitic, sparking, improved the withstand voltage properties of electron gun;
Description of drawings
Fig. 1 is the structural representation of projection tube;
Fig. 2 is the electron gun structure schematic diagram of projection tube;
Fig. 2-a is the focusing electrode three stage structure schematic diagram of Fig. 2;
Fig. 2-b is the focusing electrode four-part form structural representation of Fig. 2;
Fig. 2-c is that the focusing electrode syllogic centre of Fig. 2 is the spring structure schematic diagram;
Fig. 2-d is one section one side perforating formula of focusing electrode structural representation of Fig. 2.
Embodiment
Accompanying drawing is specific embodiments of the invention.
Below in conjunction with accompanying drawing content of the present invention is described further.
With reference to Fig. 1, shown in 2, on the negative curved face screen of glass bulb 2, scribble fluorescent powder membrane 1, projection tube neck graphitization layer 3, be coated with aluminium film 4 in the pipe, afterbody at awl is equipped with electron gun 5, said electron gun 5 has comprised modulator electrode G1 again, be equipped with negative electrode K in the place ahead of modulator electrode G1, the rear of modulator electrode G1 is provided with accelerating electrode G2, the rear of accelerating electrode G2 is provided with first anode electrode G3, the rear of first anode electrode G3 is provided with focusing electrode G4, the rear of focusing electrode G4 is provided with second plate electrode G5, accelerating electrode G2, first anode electrode G3, focusing electrode G4, the port of second plate electrode G5 all is provided with crimping, accelerating electrode G2 and first anode electrode G3 constitute prefocus, and first anode electrode G3 and focusing electrode G4 constitute attachment lens 6, and focusing electrode G4 and second plate electrode G5 constitute main lens 7, the 32KV anode voltage is added in respectively on first anode electrode G3 and the second plate electrode G5, and the 7-9KV focus voltage is added on the focusing electrode G4.The diameter of first anode electrode G3 is less than the diameter of focusing electrode G4, and the diameter of focusing electrode G4 is less than the diameter of second plate electrode G5, and the diameter of attachment lens 6 is less than the diameter of main lens 7.
Shown in Fig. 2-a, focusing electrode is divided into three stage structure, produces two intervals, and middle one section is matrix, and two ends are crimping, and part is one by one connected with belt.
Shown in Fig. 2-b, focusing electrode is divided into the four-part form structure, produces three intervals, and middle two sections is rectangle, and two ends are crimping, and part is one by one connected with belt.
Shown in Fig. 2-c, it is spring structure that focusing electrode is divided into three sections centres, and two ends are crimping, and the middle spring that increases connects, and part is one by one connected with belt.
Shown in Fig. 2-d, focusing electrode is one section one side perforating formula structure, a side perforating, and opposite side does not punch, and two ends are crimping, and part is one by one connected with belt.
In sum, the present invention is owing to the improvement to electron gun, make projection tube obtain the super large condenser lens, high focusing voltage, unipotential electrostatic focusing type electronics are strong, have high brightness, high definition, high withstand voltage requirement simultaneously, adapt to production, the especially production of 16,19,22 centimetres projection tube of all size projection tube.Bigger economic and social benefit is arranged.
Claims (6)
1. projection tube, comprise glass bulb (2), on the negative curved face screen of glass bulb (2), scribble fluorescent powder membrane (1), projection tube tube neck graphitization layer (3), aluminizer (4) in the pipe, the projection tube afterbody is equipped with electron gun (5), it is characterized in that said electron gun (5) has comprised modulator electrode (G1) again, be equipped with negative electrode (K) in the place ahead of modulator electrode (G1), the rear of modulator electrode (G1) is provided with accelerating electrode (G2), the rear of accelerating electrode (G2) is provided with first anode electrode (G3), the rear of first anode electrode (G3) is provided with focusing electrode (G4), the rear of focusing electrode (G4) is provided with second plate electrode (G5), accelerating electrode (G2), first anode electrode (G3), focusing electrode (G4), the port of second plate electrode (G5) all is provided with crimping, accelerating electrode (G2) constitutes prefocus with first anode electrode (G3), first anode electrode (G3) constitutes attachment lens (6) with focusing electrode (G4), focusing electrode (G4) constitutes main lens (7) with second plate electrode (G5), the 32KV anode voltage is added in respectively on first anode electrode (G3) and the second plate electrode (G5), and the 7-9KV focus voltage is added on the focusing electrode (G4).
2. projection tube according to claim 1 is characterized in that the diameter of the diameter of said first anode electrode (G3) less than focusing electrode (G4).
3. projection tube according to claim 1 is characterized in that the diameter of the diameter of said focusing electrode (G4) less than second plate electrode (G5).
4. projection tube according to claim 1 is characterized in that the diameter of the diameter of said attachment lens less than main lens.
5. according to claim 1 or 2 or 3 described projection tubes, the diameter that it is characterized in that first anode electrode (G3) is less than focusing electrode (G4), and the diameter of focusing electrode (G4) is less than second plate electrode (G5).
6. projection tube according to claim 1 is characterized in that the be shaped as syllogic or four-part form or syllogic centre of said focusing electrode (G4) is spring or one-part form one side perforating structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139445 CN1203516C (en) | 2002-09-26 | 2002-09-26 | Projection tube and preparation technology and special equipment used for preparing projection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139445 CN1203516C (en) | 2002-09-26 | 2002-09-26 | Projection tube and preparation technology and special equipment used for preparing projection tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1411021A CN1411021A (en) | 2003-04-16 |
| CN1203516C true CN1203516C (en) | 2005-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139445 Expired - Fee Related CN1203516C (en) | 2002-09-26 | 2002-09-26 | Projection tube and preparation technology and special equipment used for preparing projection tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN1203516C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320200B (en) * | 2007-06-04 | 2010-06-23 | 精工爱普生株式会社 | Projector and driving method of light source for projector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100505138C (en) * | 2005-08-18 | 2009-06-24 | 中国科学院电子学研究所 | Electrovacuum tube with dual anodes, and assembling method |
-
2002
- 2002-09-26 CN CN 02139445 patent/CN1203516C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320200B (en) * | 2007-06-04 | 2010-06-23 | 精工爱普生株式会社 | Projector and driving method of light source for projector |
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| Publication number | Publication date |
|---|---|
| CN1411021A (en) | 2003-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: IRICO GROUP ELECTRONICS CO., LTD. Free format text: FORMER OWNER: CAIHONG COLOUR KINESCOPE GENERAL FACTORY Effective date: 20041203 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20041203 Address after: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Applicant after: IRICO Group Electronics Co., Ltd. Address before: 712021 No. 1 Rainbow Road, Shaanxi, Xianyang Applicant before: Caihong Color CRT General Factory |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |