CN2924712Y - Dipolar energy restore maintenance circuit - Google Patents
Dipolar energy restore maintenance circuit Download PDFInfo
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- CN2924712Y CN2924712Y CNU2006200741141U CN200620074114U CN2924712Y CN 2924712 Y CN2924712 Y CN 2924712Y CN U2006200741141 U CNU2006200741141 U CN U2006200741141U CN 200620074114 U CN200620074114 U CN 200620074114U CN 2924712 Y CN2924712 Y CN 2924712Y
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Abstract
The utility model provides a bipolar energy recovery maintenance circuit and relates to an image display drive applied in groove-type plasma display panel, in particular to a maintenance pulse circuit adopting the new bipolar energy recovery maintenance circuit which further reduces the power consumption of the groove-type plasma display panel in the display. The output end of the voltage control circuit (1) is respectively connected with a positive-voltage maintenance voltage pulse generator (2), an energy recovery maintenance circuit (3), a negative-voltage maintenance voltage pulse generator (4) and a PDP high-voltage drive IC chip (5). The output end of the energy recovery maintenance circuit is respectively connected with the positive-voltage maintenance voltage pulse generator and negative-voltage maintenance voltage pulse generator. The output end of the positive-voltage maintenance voltage pulse generator and the negative-voltage maintenance voltage pulse generator is connected with the PDP high-voltage drive IC chip (5). The output end of the PDP high-voltage drive IC chip is connected with groove-type plasma display panel (6).
Description
Technical field
The utility model relates to the visual display drive method that is applied to groove type plasma display panel, especially adds the new bipolar energy recovering holding circuit in keeping pulsing circuit, the power consumption when showing with further reduction groove type plasma display panel image.
Background technology
The plasma panel display (PDP) that early 1990s rises, with its digitizing, giant-screen, high resolving power, high definition, wide visual angle and thin thickness, advantage such as in light weight is subjected to extensive concern.
Existing P DP screen all adopts three electrode AC plasma plate displays (AC-PDP) at present, 3 orthogonal thereto shapes of electrode are distributed on the front-back baseboard, discharge is then carried out between two substrates, horizontal distribution and is kept electrode (X electrode) and scan electrode (Y electrode) on the prebasal plate, both are called as show electrode together, the addressing electrode (A electrode) that on metacoxal plate, vertically distributing, X electrode and Y electrode be parallel to each other and with A electrode quadrature.In AC-PDP showed, in the phase of keeping, X electrode and Y electrode alternately added high pressure, made the unit generation discharge that has accumulated the wall electric charge in address period.Thereby realize the demonstration of image.
In the groove type plasma display panel (SM-PDP) of Southeast China University's display technique research centre independent development, employing be that two electrodes are respectively to keep electrode (X electrode) on the prebasal plate; The interchange subtend discharge mode of the addressing electrode on the metacoxal plate (A electrode).X electrode and A electrode quadrature in SM-PDP shows, in the phase of keeping, only add the positive and negative high pressure that replaces and make address period accumulate the unit generation discharge of wall electric charge, thereby realize that image shows on the X electrode.
In the phase of keeping, for the image of realizing groove type plasma display panel shows, what adopt is that bipolar energy recovering keeps driving circuit, this circuit adopts positive and negative voltage energy to recover the mode that holding circuit is separated, though can satisfy the display requirement of SM-PDP, what they adopted is twice energy conversion, energy conversion efficiency is not very high, in order further to improve the conversion efficiency that energy recovers to keep driving circuit, proposed a kind of brand-new new bipolar energy recovering holding circuit, Overall Power Consumption is further reduced.
Summary of the invention
Technical matters: the purpose of this utility model provides a kind of SM-PDP of making (groove type plasma display panel) general power and is able to significantly reduced bipolar energy recovering holding circuit.
Technical scheme: new bipolar energy recovering holding circuit of the present utility model, keep by voltage control circuit, positive voltage that voltage impulse generator, energy recover holding circuit, negative voltage is kept voltage impulse generator, PDP high drive IC chip and plasma display panel and formed.The output terminal of voltage control circuit connects positive voltage respectively and keeps voltage impulse generator, energy recovers holding circuit, negative voltage is kept voltage impulse generator, the input end of PDP horizontal high voltage driving IC chip, the output terminal of energy recovery holding circuit connects positive voltage respectively and keeps voltage impulse generator, negative voltage is kept voltage impulse generator, the input end of PDP horizontal high voltage driving IC chip, positive voltage is kept voltage impulse generator, the output terminal that negative voltage is kept voltage impulse generator connects the input end of PDP horizontal high voltage driving IC chip, the input end of the output terminal access slot type plasma display panel of PDP horizontal high voltage driving IC chip respectively.
The Control of Voltage pulse that voltage control circuit is made up of programmable logic chip and field effect transistor chip for driving produces the pulse signal " XEFH, XEFL, XGIH, XGIL, XP2L, XNEH, XNEL, XAEL " that drives field effect transistor, correspondence connects the grid of each field effect transistor " M1, M2, M4, M5, M6, M7, M8, M9 " respectively, according to different time constants, control the unlatching and the closure time of each field effect transistor, guarantee the realization of bipolar energy recovering holding circuit function.
The energy recovering holding method of bipolar energy recovering holding circuit of the present utility model, keep voltage impulse generator and energy by positive voltage and recover holding circuit and produce positive voltage and keep potential pulse, negative voltage is kept voltage impulse generator and energy and is recovered holding circuit and produce negative voltage and keep potential pulse; In the phase of keeping, positive voltage was kept potential pulse before positive voltage is added to the SMPDP screen, earlier the negative voltage on the capacity plate antenna " Cp " is added on the field effect transistor " M1 " by field effect transistor " M8 " and telefault " L2 ", the pressure reduction that makes field effect transistor " M1 " source electrode and drain electrode is zero; Negative voltage was kept potential pulse before negative voltage is added to the SMPDP screen, earlier the positive voltage on the capacity plate antenna " Cp " is added on the field effect transistor " M6 " by field effect transistor " M7 " and telefault " L1 ", the pressure reduction that makes field effect transistor " M1 " source electrode and drain electrode is zero; Formation is kept the positive and negative pulse waveform that replaces of phase to column electrode and is realized that respectively energy recovers.In the phase of keeping, the output terminal of PDP horizontal high voltage driving IC chip and ground end are joined, promptly open the field effect transistor " T1 " on the PDP horizontal high voltage driving IC chip output stage, guarantee the realization of bipolar energy recovering holding circuit function.
Beneficial effect: because AC-PDP is different fully with the type of drive that SM-PDP produces discharge in the phase of keeping, so all energy recovery circuits for AC-PDP all can not use on SM-PDP at present, according to the type of drive of SM-PDP in the phase of keeping, we design the new bipolar energy recovering holding circuit, and be applied to 42 " on the SM-PDP display screen; Overall Power Consumption is descended more than 80%, guaranteed the operate as normal of SM-PDP complete machine.
Description of drawings
Fig. 1 is the structured flowchart of bipolar energy recovering holding circuit.
Fig. 2 is the bipolar energy recovering holding circuit schematic diagram.
There are voltage control circuit 1, positive voltage to keep that voltage impulse generator 2, energy recover holding circuit 3, negative voltage is kept voltage impulse generator 4, PDP high drive IC chip 5, groove type plasma display panel 6 among the above figure.
Embodiment
The structure that Figure 1 shows that bipolar energy recovering holding circuit is kept by voltage control circuit 1, positive voltage that voltage impulse generator 2, energy recover holding circuit 3, negative voltage is kept voltage impulse generator 4, PDP high drive IC chip 5 and plasma display panel 6 and formed.The output terminal of voltage control circuit 1 connects positive voltage respectively and keeps that voltage impulse generator 2, energy recover holding circuit 3, negative voltage is kept voltage impulse generator 4, PDP high drive IC chip 5, the output termination positive voltage of energy recovery holding circuit 3 is kept voltage impulse generator 2, negative voltage is kept voltage impulse generator 4, positive voltage is kept the output termination PDP high drive IC chip 5 that voltage impulse generator 2, negative voltage are kept voltage impulse generator 4, the output terminal access slot type plasma display panel 6 of PDP high drive IC chip 5.
Figure 2 shows that the electrical schematic diagram of bipolar energy recovering holding circuit.In the new bipolar energy recovering holding circuit, positive voltage is kept the way that voltage impulse generator circuit and negative voltage are kept the voltage impulse generator circuit, will increase to some extent according to the size of plasma display panel.For the plasma display panel more than 34 cun, positive voltage is kept voltage impulse generator circuit and negative voltage and is kept the voltage impulse generator circuit and will be no less than 4 the tunnel separately.These circuit theory diagrams only illustrate wherein one the tunnel.
The embodiment of bipolar energy recovering holding circuit is as follows:
The Control of Voltage pulse that voltage control circuit 1 is made up of programmable logic chip and field effect transistor chip for driving produces and drives field effect transistor pulse signal " XEFH, XEFL, XGIH, XGIL, XP2L, XNEH, XNEL, XAEL ", correspondence connects the grid of each field effect transistor " M1, M2, M4, M5, M6, M7, M8, M9 " respectively
According to different time constants, control the unlatching and the closure time of each field effect transistor, guarantee the realization of new bipolar energy recovering holding circuit function.Positive voltage is kept voltage impulse generator 2 and is mainly comprised field effect transistor " M1, M2, M3, M4 ", fast recovery diode " D1, D2 ", and resistance " R1, R2 ", stabilivolt " ZD1 " and IC built-in chip type diode " RD1, RD2 " are formed; Energy recovers holding circuit 3 and mainly comprises field effect transistor " M7, M8, M9 ", fast recovery diode " D3, D4 ", and telefault " L1, L2 " and PDP screen electric capacity " Cp " are formed; Negative voltage is kept voltage impulse generator 4 and is mainly comprised field effect transistor " M2, M3, M4, M5, M6, M9 ", fast recovery diode " D1, D2 ", resistance " R1, R2 ", and stabilivolt " ZD1 " and IC built-in chip type diode " RD1, RD2 " are formed; PDP high drive IC chip 5, present model is " STV7617D ", the unlatching of the field effect transistor on its output stage " T1, T2 " is with closed, and by voltage control circuit 1 control, IC built-in chip type diode " RD1 and RD2 " is respectively the diode-built-in of field effect transistor " T1, T2 "; What plasma display panel 6 adopted is groove type plasma display panel, and its equivalent capacity is " Cp ".
The course of work of bipolar energy recovering holding circuit is as follows:
1. positive voltage is kept potential circuit, at first control the output terminal of IC chip and the ground end of IC chip and join (promptly opening the field effect transistor T1 on the IC output stage), open field effect transistor " M1, M3, M4 ", and other Mos switches are switched off all.At this moment, after voltage Vp was charged to Vs on the gas ions display board, field effect transistor " M1, M3, M4 " was switched off.
2. then, open field effect transistor M7 at once, because the sudden change of circuit, voltage Vp sense of direction motional electromotive force of a size on one of the two ends of telefault L1 generation and gas ions display board, just in time be added in the drain electrode of effect pipe M6, the pressure reduction between the DS (source electrode-drain electrode) of effect pipe M6 is zero at this moment.
3. turn off field effect transistor M7, and open field effect transistor " M6, M9 ", negative voltage is kept the voltage impulse generator circuit and is started working at once.
4. turn off field effect transistor " M6, M9 ", open field effect transistor M8 at once, because the sudden change of circuit, voltage Vp sense of direction motional electromotive force of a size on one of the two ends of telefault L2 generation and gas ions display board, just in time be added on the source electrode of effect pipe M1, the pressure reduction between the DS of effect pipe M1 is zero at this moment.
5. turn off field effect transistor M8, and open field effect transistor " M1, M3, M4 ", positive voltage is kept the voltage impulse generator circuit and is started working.
6. turn off field effect transistor " M1, M3, M4 ", repeat the step of above 2.3.4.5, negative voltage is kept voltage impulse generator circuit and positive voltage, and to keep the pressure reduction that the voltage impulse generator circuit all is operated between the DS be zero condition.
Claims (2)
1, a kind of bipolar energy recovering holding circuit, the output terminal that it is characterized in that voltage control circuit (1) connects positive voltage respectively and keeps voltage impulse generator (2), energy recovers holding circuit (3), negative voltage is kept voltage impulse generator (4), the input end of PDP horizontal high voltage driving IC chip (5), the output terminal of energy recovery holding circuit (3) connects positive voltage respectively and keeps voltage impulse generator (2), negative voltage is kept voltage impulse generator (4), the input end of PDP horizontal high voltage driving IC chip (5), positive voltage is kept voltage impulse generator (2), the output terminal that negative voltage is kept voltage impulse generator (4) connects the input end of PDP horizontal high voltage driving IC chip (5), the input end of the output terminal access slot type plasma display panel (6) of PDP horizontal high voltage driving IC chip (5) respectively.
2, according to the described bipolar energy recovering holding circuit of claim 1, it is characterized in that the Control of Voltage pulse that voltage control circuit (1) is made up of programmable logic chip and field effect transistor chip for driving produces the pulse signal " XEFH; XEFL; XGIH; XGIL; XP2L; XNEH that drives field effect transistor, XNEL, XAEL "; correspondence meets each field effect transistor " M1 respectively, M2, M4, M5, M6, M7, M8, M9 " grid; according to different time constants; control the unlatching and the closure time of each field effect transistor, guarantee the realization of bipolar energy recovering holding circuit function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200741141U CN2924712Y (en) | 2006-06-16 | 2006-06-16 | Dipolar energy restore maintenance circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200741141U CN2924712Y (en) | 2006-06-16 | 2006-06-16 | Dipolar energy restore maintenance circuit |
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| Publication Number | Publication Date |
|---|---|
| CN2924712Y true CN2924712Y (en) | 2007-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2006200741141U Expired - Fee Related CN2924712Y (en) | 2006-06-16 | 2006-06-16 | Dipolar energy restore maintenance circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409286C (en) * | 2006-06-16 | 2008-08-06 | 南京华显高科有限公司 | Bipolar energy recovering holding circuit and energy recovering holding method thereof |
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2006
- 2006-06-16 CN CNU2006200741141U patent/CN2924712Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100409286C (en) * | 2006-06-16 | 2008-08-06 | 南京华显高科有限公司 | Bipolar energy recovering holding circuit and energy recovering holding method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20120616 |