CN1067136A - Apparatus for aging in high voltage - Google Patents

Apparatus for aging in high voltage Download PDF

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Publication number
CN1067136A
CN1067136A CN92103157A CN92103157A CN1067136A CN 1067136 A CN1067136 A CN 1067136A CN 92103157 A CN92103157 A CN 92103157A CN 92103157 A CN92103157 A CN 92103157A CN 1067136 A CN1067136 A CN 1067136A
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China
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mentioned
pulse
high voltage
aging
voltage
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CN92103157A
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Chinese (zh)
Inventor
朴星俊
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LG Electronics Inc
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Gold Star Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances
    • H01J9/445—Aging of tubes or lamps, e.g. by "spot knocking"

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

Hocket the luminous point vibrations continuously and respond to the apparatus for aging in high voltage that the exotic matter in the cathode ray tube is removed in vibrations effectively thereby the invention provides, comprising being used to take place the aging high-tension supply unit of using, the 1st pulse generator with induction vibrations drive signal of minor cycle pulse train, generation has the 2nd pulse generator of the luminous point vibrations activation bit of large period pulse train, be used to select the 1st pulse generator and the 2nd pulse generator output switch and according to the pulse signal of selecting by switch the output of power generator is added in SCR on the cathode ray tube.

Description

Apparatus for aging in high voltage
The present invention relates to remove the apparatus for aging in high voltage of exotic matter in the cathode ray tube, relate in particular to the apparatus for aging in high voltage that can carry out luminous point vibrations (spot knocking) and induction vibrations (induction knocking) continuously.
Usually, thus cathode ray tube is to allow the electron beam scanning picture express the device of image.Shown in Figure 1, above-mentioned cathode ray tube has panel 1 and rear wall 2.Panel 1 portion has within it disposed planar mask 3 and the shadow mask frame 4 that supports this planar mask 3.And above-mentioned rear wall 2 within it portion the electron gun that is used for to the direction divergent bundle of above-mentioned panel 1 is housed.For the cathode ray tube of this spline structure, in order to make the electron beam maximization, must remove the electrode ledge of residual gas, exotic matter and unnecessary formation in the pipe, make and keep 10 in the pipe -9The high vacuum state of torr degree, and, must in pipe, coat the high material of work function.This be because, in the pipe of about 30KV under the high voltage, when scribbling the low material of work function (being carbonate) in the cathode ray tube pipe, the material that work function is low can produce drift magnetic field, in addition, interior discharge is managed by the protuberance branch of residual gas, exotic matter and electrode.
Therefore, the production process of cathode ray tube includes the deairing step of residual gas in the discharge pipe, interior exotic matter and electrode protrusion aging process are partly managed in activate operation and the removal that makes the low magnetic hydrochlorate of work function be reduced into the high oxide of work function.
In these operations, in order to prevent to damage the application substance that is coated in the cathode ray tube, thereby aging process must alternately carry out removing the luminous point vibrations or the direct current vibrations of big exotic matter penetrating the high voltage that is continuously applied on grade ray tube about 50KV continuously, thus and the induction vibrations or the pulse vibrations of removing little exotic matter at the high voltage that periodically applies on the cathode ray tube about 80KV.But the device that is used to carry out the device of above-mentioned luminous point vibrations and is used to carry out above-mentioned induction vibrations is separately to constitute according to the voltage characteristic of luminous point vibrations and induction vibrations.Therefore, the producer has to bear trouble, cathode ray tube is moved about between luminous point shaking device and sense back shaking device continually, to remove the exotic matter in the pipe.In addition, because the frequent of cathode ray tube moves, ageing treatment time is elongated, and, when the earthy socket of cathode ray tube connects and throws off the newel post of electron gun, can produce lacerated wound.
As a reference, in Fig. 2 A and Fig. 2 B, show the voltage characteristic of luminous point vibrations and the voltage characteristic of induction vibrations respectively.In addition, luminous point shaking device and induction shaking device are shown respectively in Fig. 3 A and 3B.In Fig. 3 A, the luminous point shaking device comprise be used to take place high-tension the 1st high-pressure generating circuit 9 of 50KV, the high-voltage signal of the 1st high-pressure generating circuit 9 is switched to the high-voltage signal of the square waveform shown in Fig. 2 A and be added on the cathode ray tube 13 Waveform forming device 7 and for cathode ray tube 13 ground connection being connected the earthy supply socket 14 of electron gun newel post.On the other hand, Fig. 3 B illustrates the induction shaking device, it comprises the 2nd high-pressure generating circuit 10 that produces the 80KV high voltage signal, the high-voltage signal of the 2nd high-pressure generating circuit 10 is transformed into pulse condition high-voltage signal shown in Fig. 2 B and be added on the cathode ray tube 13 the 2nd Waveform forming device 8 and for cathode ray tube 13 ground connection being connected the earthy supply socket 14 of electron gun newel post.Like that, the luminous point shaking device is separately to constitute in addition with the induction shaking device shown in Fig. 3 A, 3B, therefore, has produced elongated, the necessary frequent problem that moves of cathode ray tube of needed time of high pressure burin-in process.
Thereby the object of the present invention is to provide a kind of can carrying out with exotic matter in the removal cathode ray tube for ground continuously is the apparatus for aging in high voltage of the luminous point vibrations and the induction vibrations of purpose.
To achieve these goals, apparatus for aging in high voltage of the present invention has comprised the mode choice device that is used to select the aging mode of high pressure, be used to produce the aging high-tension power generator of using, generation has the 1st pulse generating unit of the induction vibrations drive signal of little pulse train of cycle, be used to produce the 2nd pulse generating unit of luminous point vibrations drive signal with big pulse train of cycle, be used to select the choice device of the output of above-mentioned the 1st pulse generating unit and the 2nd pulse generating unit, according to the pulse signal of selecting by above-mentioned choice device the output of above-mentioned power generator is applied to control switch device on the cathode ray tube.
Rely on said structure, the present invention alternately carries out luminous point vibrations and induction vibrations continuously, gets rid of the exotic matter in the cathode ray tube effectively.
Fig. 1 is the cut-away view of conventional cathode ray tube,
The oscillogram of voltage signal when Fig. 2 A is the luminous point vibrations,
The oscillogram of voltage signal when Fig. 2 B is the induction vibrations,
Fig. 3 A is the structural representation that is used for the aging equipment of luminous point vibrations,
Fig. 3 B is the structure chart that is used to respond to the aging equipment of vibrations,
Fig. 4 is the structural representation of aging equipment of the present invention,
Fig. 5 is the circuit diagram of the aging equipment of one embodiment of the invention,
Fig. 6 A, 6B, 6C be supply with the 1st pulse input end shown in Figure 5 and the 2nd pulse input end pulse signal and with the oscillogram of the output signal of door 132.
Referring to Fig. 4, have shown in it aging aging equipment of the present invention with high-tension supply unit 12 takes place.The alternating voltage (220V or 110V) commonly used that above-mentioned supply unit 12 accept to be supplied with from the outside becomes the direct voltage of about 315V or 500V with its boosting inverter, and the high voltage that is transformed into is supplied with aging voltage generation circuit 11.11 pairs in above-mentioned aging voltage generation circuit carries out waveform shaping from direct voltage above-mentioned supply unit 12, that be about 315V or 500V behind the boosting inverter, and boost and become the induction vibrations drive signal of the about 80KV with minor cycle pulse type, the luminous point vibrations drive signal that perhaps has about 50KV of large period pulse type, and the induction that will produce shakes drive signal or luminous point vibrations drive signal is applied on the cathode ray tube.
With reference to Fig. 5, apparatus for aging in high voltage of the present invention shown in it includes the variable rectification circuit 100 of introducing commercial ac power source (110/220V) by power input 101,102.Above-mentioned variable rectification circuit 100 is according to the logic state that is applied to the mode control signal on the control end by microprocessor 120, to boost to about about 315V or 500V by the commercial ac power source that power input flows into from the outside, with the AC rectification after boosting, and 315V or 500V direct voltage that rectification obtains supplied with variable voltage stabilizing circuit 110.
The aforesaid way control signal is a high level, and when promptly carrying out the luminous point vibrations, variable rectification circuit 100 produces the direct voltage after the rectification of boosting that is about 315V.On the contrary, when the aforesaid way control signal is a low-voltage, that is when responding to vibrations, variable rectification circuit 100 produces the direct voltage after the rectification of boosting that is about 500V.In addition, above-mentioned variable voltage stabilizing circuit 110 bases are from the logic state of the aforesaid way control signal of microprocessor 120, the output of above-mentioned variable rectification circuit 100 is stably maintained 315V or 500V, to the SCR130(controllable silicon) anode supply with the burning voltage of 315V or 500V.Above-mentioned side's control signal is a high level, that is carries out luminous point when vibrations, and above-mentioned variable voltage stabilizing circuit 110 will become the burning voltage of 315V from dc voltage conversion above-mentioned variable rectification circuit 100, that be about 315V.
On the contrary, when the aforesaid way control signal is a low-voltage, that is when responding to vibrations, variable voltage stabilizing circuit will become the burning voltage of 500V from the direct voltage of about 500V of variable rectification circuit 100.
Above-mentioned apparatus for aging in high voltage also includes control switch SW1, and this switch has by resistance R 1 connection the 1st power supply V CcBasic contact RP, connect with the 1st of 131 1 inputs of door and select contact SP1 and the 2nd selection contact SP2 that is connected with 132 the 2nd input.Above-mentioned control switch SW1 is connected to the 1st with basic contact RP and selects contact SP1 or the 2nd to select contact SP2 according to the logic state that is applied to the mode control signal on the control end by above-mentioned microprocessor 120.When the aforesaid way control signal was low level, control switch SW1 selected contact SP1 by the 1st, will be given to the 1st supply power V on the basic contact RP by resistance R 1 CcOffer a input with door 131.On the contrary, when the aforesaid way control signal was high level, control switch SW1 selected contact SP2 with the first supply power V by the 2nd CcOffer the 2nd input with door 132.When the basic contact RP of above-mentioned control switch SW1 and the 1st selects contact SP1 to be connected, above-mentionedly will offer the grid of SCR130 by relative less the 1st pulse train of the cycle of the 1st pulse input end 103 another inputs of inflow via tie point P1 with 131.Above-mentioned the 1st pulse input end 103 be connected simultaneously with input of door 131 and with the 1st input of door 132 on, in addition, also link on the outside pulse generator (not shown).Fig. 6 illustrates the impulse waveform of supplying with the 1st pulse input end 103.On the other hand, introduce the 1st pulse train that the 2nd of control switch SW1 selects the output of contact SP2 and supplies with the 1st pulse input end 103 with door 132 from the 2nd input and the 1st input, to be applied to the 2nd of bigger the 2nd pulse train of cycle on the 3rd input and control switch SW1 by the 2nd pulse input end 104 and select output and the 1st pulse train of contact SP2 to make logic and operation, will be applied on the grid of SCR130 by tie point P1 through output with computing.The 2nd pulse input end 104 connects outside pulse generator (not shown), the 2nd pulse train that the introducing cycle is bigger.The waveform of the 2nd pulse train is shown in Fig. 6 B.And Fig. 6 C illustrate by with door 132 do with computing after the waveform of pulse signal,, in the 2nd of control switch SW1 selects the output of contact SP2 and interval that the 2nd pulse train all is high level, have the 1st pulse train here with pulse signal after the computing.Thereby, carrying out luminous point when vibrations, shown in Figure 6ly be applied on the grid of SCR130 by the pulse that obtains with door 132, on the contrary, when responding to vibrations, be added on the grid of SCR130 by the pulse signal that provides with door 131 shown in Fig. 6 A.
Above-mentioned apparatus for aging in high voltage is by according to being transformed into Fig. 6 A, the such pulse signal of 6C from the burning voltage of variable voltage stabilizing circuit 110 with door 131 with SCR130 that the logic state that door 132 is added in the pulse signal on the grid via tie point P1 is carried out switch.When luminous point shook, the pulse signal that the SCR130 conversion goes out had the waveform of Fig. 6 C and the voltage of 315V.On the contrary, when the induction vibrations, then has the waveform of Fig. 6 A and the voltage of 500V.Be connected the output of variable voltage stabilizing circuit 110 and the capacitor C 1 between the 2nd power supply (GND) and remove the high-frequency cacophony that the output voltage at variable voltage stabilizing circuit 110 switches to 500V or produces from 315V when 500V switches to 315V, that is excessively video picture.Tie point P1 is line or a circuit of above-mentioned output with door 131,132 being done the logic OR computing.
In addition, apparatus for aging in high voltage also comprises the pulse-shaped voltage signal from SCR130 boosted, and the pulse signal after will boosting offers the transformer T1 of the terminal of the anode of diode D1 and the 1st relay R Ya.
Pulse signal after being boosted by transformer T1 has the voltage of 50KV when luminous point shakes, and the voltage of 80KV is arranged during the induction vibrations.Terminal of the first relay R Ya connects the secondary coil of transformer T1, another terminal connects output 105, when the induction vibrations, that is when the basic contact RP and the 1st of control switch SW1 selects contact SP1 to be connected, the 1st relay R Ya gets electric, will be added on the cathode ray tube 13 by output 105 from the pulse signal with the such waveform of Fig. 6 and 80KV voltage (i.e. induction vibrations drive signal) of transformer T1.On the other hand, be connected the secondary coil of transformer T1 and the diode D1 between the output 105, the 2nd relay R Yb between output 105 and the 2nd supply power GND and capacitor C 2 when luminous point shakes, that is when the basic contact RP and the 2nd of control switch SW1 selects contact SP2 to be connected, to be applied on the cathode ray tube 13 by output 105 pulse signal that Fig. 6 B is such (being luminous point vibrations drive signals) from behind the peaceful ripple of the pulse signal rectification of transformer T1 with the such waveform of Fig. 6 C and 50KV voltage.Wherein, the 2nd relay gets when luminous point shakes.The 1st relay R Ya and the 2nd relay R Yb and control switch SW1 interlock are done opposite switch motion mutually.
On the other hand, the microprocessor 120 that comprises in the apparatus for aging in high voltage is according to the order of being passed through the appointment of main switch (not shown) by the user, provide and specify the mode control signal of carrying out luminous point vibrations and induction vibrations, be added on the control end of variable rectification circuit 110 and control switch SW1.
Supply unit 12 shown in Figure 4 has variable rectification circuit 100 shown in Figure 5 and variable voltage stabilizing circuit 110, and aging voltage generation circuit 11 shown in Figure 4 has microprocessor 120, resistance R 1, control switch SW1, SCR130, transformer T1, diode D1, two and door 131,132, two capacitor C 1, C2 and two relay R Ya, RYb.
As previously mentioned, the advantage of apparatus for aging in high voltage of the present invention is can be selectively and produce the luminous point vibrations voltage signal that maintains in the given time on the 50KV high pressure continuously and have the induction vibrations voltage signal that impacts form and 80KV voltage, is applied on the cathode ray tube.With above-mentioned advantage, the present invention provides convenience to the user, can carry out luminous point vibrations and induction vibrations in a place.
Fig. 4 and Fig. 5 only are used to illustrate embodiments of the invention, and the those of ordinary skill in the present technique field can be wanted in the point range at technological thought of the present invention and its, the present invention is made distortion or change, and implement the present invention.
Thereby the present invention does not limit to the foregoing description, and should only limit within the scope of the claims.

Claims (14)

1, a kind ofly be used to remove the apparatus for aging in high voltage that is present in the exotic matter in the cathode ray tube, it is characterized in that it comprises:
Be used to select the mode choice device of the aging mode of high pressure;
Be used for the output according to the aforesaid way choice device, generation has the 1st high voltage of pre-sizing and the 2nd high-tension power generator bigger than the 1st high voltage;
Be used to have the 1st pulse generating unit of the 1st pulse train of predetermined pulse width;
Be used to take place to compare the 2nd pulse generating unit of the 2nd pulse train of the minimum impact shape of width with the pulse duration of the 1st pulse train;
According to the output of mode choice device, select from the 1st pulse train of the 1st pulse generating unit with from the pulse-selecting apparatus of the 2nd pulse train of the 2nd pulse generating unit;
According to the pulse signal that pulse-selecting apparatus is selected, switch from the high voltage of power generator and with it and put on power transfer device on the above-mentioned cathode ray tube.
2, apparatus for aging in high voltage as claimed in claim 1 is characterized in that, above-mentioned power transfer device comprises the control switch element.
3, apparatus for aging in high voltage as claimed in claim 2 is characterized in that, above-mentioned control switch element is SCR.
4, apparatus for aging in high voltage as claimed in claim 1, it is characterized in that above-mentioned pulse-selecting apparatus comprises: according to the output of aforesaid way choice device with the 1st pulse train of above-mentioned the 1st pulse generating unit switch to above-mentioned power transfer device one side the 2nd control switch element, the 2nd pulse train of above-mentioned the 2nd pulse generating unit is switched to the 3rd control switch element of above-mentioned power transfer device one side and is used for the synthesizer of the output of synthetic above-mentioned the 2nd, 3 control switch elements according to the output of aforesaid way choice device.
5, apparatus for aging in high voltage as claimed in claim 4 is characterized in that, above-mentioned the 2nd, 3 control switch elements are gating elements.
6, apparatus for aging in high voltage as claimed in claim 5 is characterized in that, above-mentioned synthesizer is to make the circuit of line exclusive disjunction from the 1st, 2 pulse trains of above-mentioned gating element.
7, apparatus for aging in high voltage as claimed in claim 6, it is characterized in that, above-mentioned power generator produces the 1st high voltage when the output that is added with from the high level state of aforesaid way choice device, above-mentioned the 1st gating element will be sent to above-mentioned power transfer device one side from the 1st pulse train of above-mentioned the 1st pulse generating unit according to the output of the high level state of aforesaid way choice device.
8, apparatus for aging in high voltage as claimed in claim 7 is characterized in that, above-mentioned the 1st high voltage is 50KV, and above-mentioned the 2nd high voltage is 80KV.
9, a kind of apparatus for aging in high voltage that is used to remove the exotic matter in the cathode ray tube is characterized in that it comprises:
Be used to produce the 1st high voltage and the 2nd big high-tension the 1st power generator of Bi Di 1 high voltage of pre-sizing,
Be used to produce the 1st pulse generating unit of the 1st pulse train with preset width,
Be used to produce the 2nd pulse generating unit of impact form the 2nd pulse train with pulse duration littler than the pulse duration of above-mentioned the 1st pulse train,
Be used to select from the 1st pulse train of above-mentioned the 1st pulse generating unit with from the pulse-selecting apparatus of the 2nd pulse train of above-mentioned the 2nd pulse generating unit,
Pulse train according to above-mentioned pulse-selecting apparatus is selected switches the high voltage from above-mentioned power generator, is sent to the power transfer device of above-mentioned cathode ray tube one side,
Be connected between above-mentioned power transfer device and the above-mentioned cathode ray tube, the transformer that the output of above-mentioned power transfer device is boosted with estimated rate,
Be used to control the control device of the voltage occurring mode of the pulse choice of above-mentioned pulse-selecting apparatus and above-mentioned power generator.
10, apparatus for aging in high voltage as claimed in claim 9 is characterized in that, above-mentioned power generator comprises that will use AC power always according to above-mentioned control device boosts and be transformed into the 1st high voltage and the 2nd high-tension variable rectification circuit after the rectification; The 1st high voltage and the 2nd high-tension variable voltage stabilizing circuit that will change the burning voltage form into from the 1st high voltage and the 2nd high-voltage variable of above-mentioned variable rectification circuit.
11, apparatus for aging in high voltage as claimed in claim 10 is characterized in that, above-mentioned power transfer device comprises SCR.
12, apparatus for aging in high voltage as claimed in claim 11, it is characterized in that it comprises that also noise prevents locking apparatus, this device is connected between above-mentioned SCR and the above-mentioned variable voltage stabilizing circuit, be used for when the output voltage of above-mentioned variable voltage stabilizing circuit changes, removing the high-frequency cacophony that is produced.
13, apparatus for aging in high voltage as claimed in claim 9, it is characterized in that, it also comprises: the 2nd rectification circuit, it is connected between above-mentioned transformer and the above-mentioned cathode ray tube, under the control of above-mentioned control device, carry out will from the buffering of the voltage after the boosting of above-mentioned transformer back supply with cathode ray tube work and with above-mentioned transformer send here boost after the flat ripple of voltage commutation after supply with the work of cathode ray tube
Above-mentioned pulse-selecting apparatus comprises: under the control of above-mentioned control device, select above-mentioned the 2nd pulse train to be applied to control switch device on the above-mentioned power transfer device, with under the control of above-mentioned control device, modulate above-mentioned the 1st pulse train with the 2nd pulse train, the output after the modulation is offered the synthesizer of above-mentioned power transfer device.
14, apparatus for aging in high voltage as claimed in claim 13 is characterized in that, above-mentioned control switch device and above-mentioned synthesizer comprise gating element.
CN92103157A 1991-04-30 1992-04-30 Apparatus for aging in high voltage Pending CN1067136A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR91-6094 1991-04-30
KR2019910006094U KR940000400Y1 (en) 1991-04-30 1991-04-30 Apparatus for aging a high-voltage of colar picture tube

Publications (1)

Publication Number Publication Date
CN1067136A true CN1067136A (en) 1992-12-16

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Application Number Title Priority Date Filing Date
CN92103157A Pending CN1067136A (en) 1991-04-30 1992-04-30 Apparatus for aging in high voltage

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JP (1) JPH05151897A (en)
KR (1) KR940000400Y1 (en)
CN (1) CN1067136A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106960773A (en) * 2017-04-24 2017-07-18 深圳先进技术研究院 Field emission electron source device
CN106981409A (en) * 2017-04-24 2017-07-25 深圳先进技术研究院 X-ray source device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07114882A (en) * 1993-10-15 1995-05-02 Sony Corp Knocking processing method for cathode-ray tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106960773A (en) * 2017-04-24 2017-07-18 深圳先进技术研究院 Field emission electron source device
CN106981409A (en) * 2017-04-24 2017-07-25 深圳先进技术研究院 X-ray source device
CN106981409B (en) * 2017-04-24 2019-04-05 深圳先进技术研究院 The method for preventing from persistently striking sparks in cold cathode X-ray source test and ageing process
CN106960773B (en) * 2017-04-24 2019-04-05 深圳先进技术研究院 The method for controlling field-transmitting cathode test and current stability in ageing process

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JPH05151897A (en) 1993-06-18
KR940000400Y1 (en) 1994-01-24
KR920020438U (en) 1992-11-17

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