CN100435197C - Plasma display panel drive method and drive device - Google Patents
Plasma display panel drive method and drive device Download PDFInfo
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- CN100435197C CN100435197C CNB2006101596192A CN200610159619A CN100435197C CN 100435197 C CN100435197 C CN 100435197C CN B2006101596192 A CNB2006101596192 A CN B2006101596192A CN 200610159619 A CN200610159619 A CN 200610159619A CN 100435197 C CN100435197 C CN 100435197C
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
- G09G3/294—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0228—Increasing the driving margin in plasma displays
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- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Disclosed is a plasma display panel drive method and drive device, which includes a power supply providing unit, providing the first voltage to the scanning electrode driving unit or the maintenance electrode driving unit in order to provide the required waveform voltage for the panel maintaining discharge; and a voltage increasing loop providing the second voltage having the different size of voltage from the first voltage to the position electrode driving unit using the first voltage provided by the power supply providing unit so as to provide position pulse waveform voltage to the panel. The invention provides the required voltage power supply with voltage waveform to maintain the discharge and the voltage power supply generating the positioning pulse voltage waveform, so the residual problem of the positioning voltage is solved.
Description
One, technical field
The invention relates to the drive unit of Plasmia indicating panel and driving method, more specifically say, it is a kind of power supply that generates the voltage of keeping the required voltage waveform of discharge that comprehensively provides, with the power supply of the voltage that generates the position pulse voltage waveform, thereby can separate the drive unit and the driving method of the Plasmia indicating panel of decision bit voltage margin (margin) problem with simple method.
Two, background technology
Plasmia indicating panel (Plasma Display Pane: following being called ' PDP ') produces the display device of the phenomenon of visible light when being the ultraviolet ray excited fluorophor that utilizes that gas discharge produces.PDP compares with cathode ray tube (CRT), has thinner thickness and weight is lighter, the advantage of large-scale picture that can high resolution displayed.General PDP is made up of a plurality of discharge cells (cell) of arranging with matrix (matrix) form, and a discharge cell (cell) is equivalent to a sub-pixel (sub-pixel) of picture.
Fig. 1 is in the prior art, the STRUCTURE DECOMPOSITION synoptic diagram of 3 electrode AC creeping discharge type Plasmia indicating panels.With reference to figure 1, each discharge cell (cell) possesses the scan electrode (Y) that forms on the upper substrate 1 and keeps electrode (Z), the keeper electrode (X) that forms on the lower basal plate 9.Scan electrode (Y) with keep electrode (Z) and generally form by transparent indium tin oxide (Indium-Tin-Oxide: following being called ' ITO '), the voltage that causes for the high-ohmic that reduces above-mentioned substance descends, form respectively above it by Ag, Cu, the bus electrode 3 of at least a formation in the metals such as Cr.
Form scan electrode (Y) side by side and keep that accumulation forms upper dielectric layer 4 and diaphragm 5 on the upper substrate 1 of electrode (Z).The damage of the upper dielectric layer 4 that the physical sputtering that diaphragm 5 takes place when preventing plasma discharge causes simultaneously, in order to improve the release efficiency of 2 electronics, is generally formed by magnesium oxide (MgO).
Form lower dielectric layer 8 and interlayer 6 on the lower basal plate 9 of formation keeper electrode (X), lower dielectric layer 8 and interlayer 6 surface spraying fluorophor 7.Keeper electrode (X) and scan electrode (Y) and keep electrode (Z) and be vertically formed, interlayer 6 forms abreast with keeper electrode (X), and the ultraviolet ray and the visible light of generation leak in the adjacent discharge cell (cell) when preventing to discharge.It is ultraviolet ray excited that fluorophor 7 produces during by plasma discharge, produces red (R), any one visible rays in green (G) or blue (B).Ne+Xe and a spot of inert gas of gas discharge carried out in inclosure in the discharge space that is formed by upper substrate 1 and lower basal plate 9 and interlayer 6.
PDP with said structure is by the relative discharge between keeper electrode (X) and scan electrode (Y) and after selecting discharge cell (cell), by scan electrode (Y) and keep the surface-discharge between electrode (Z) and keep the discharge condition of above-mentioned selected discharge cell (cell).In this discharge cell (cell), owing to keep the ultraviolet ray that produces when discharging, make fluorophor 7 luminous, visible light is to the outside release of cell (cell).Its result, discharge cell (cell) is adjusted the time that discharge is kept, and shows GTG, and the PDP that its discharge cell (cell) is arranged with matrix (matrix) form is with display image.
Fig. 2 a is in the prior art, an example schematic of the drive waveforms of PDP driving method.
With reference to figure 2a, during the rising edge of reseting period (SU), provide roughly from keeping the rising ramp waveform (Ramp-up) that voltage (Vs) rises to rising edge voltage (Vsetup) to all scan electrodes (Y) simultaneously.Meanwhile, provide base voltage (GND) to keeping electrode (Z) with keeper electrode (X).Because above-mentioned rising ramp waveform (Ramp-up), in the discharge cell (cell) of whole image, scan electrode (Y) and keep electrode (Z) and keeper electrode (X) between faint discharge will take place, it is the rising edge discharge, because above-mentioned rising edge discharge, keeper electrode (X) will be gathered positive polarity wall electric charge with keeping on the electrode (Z), will gather negative polarity wall electric charge on the scan electrode (Y).
During the negative edge of reseting period (SD), provide roughly to scan electrode (Y) to begin to drop to base voltage or negative polarity negative edge voltage (decline ramp waveform (Ramp-down) Vsetdown) from keeping voltage (Vs).Provide during the decline ramp waveform (Ramp-down), provide positive polarity DC voltage (Vdc) (generally have and keep the identical value of pulse voltage (Vs)), provide base voltage (GND) to keeper electrode (X) to keeping electrode (Z).Because decline ramp waveform (Ramp-down), scan electrode (Y) with keep electrode (Z) and keeper electrode (X) between faint discharge will take place, promptly negative edge discharges.Because above-mentioned negative edge discharge, in the wall electric charge that forms when rising edge discharges, too much wall electric charge unnecessary during orientation discharge will be eliminated.
During the location, at first provide scan reference voltage (Vsc) to scan electrode (Y), then, generally the order with row (line) provides base voltage or negative polarity scan pulse voltage (Vy) to scan electrode (Y) successively, simultaneously, add above-mentioned scan pulse voltage and (Vy) synchronously, provide positive polarity position pulse voltage (Va) with negative to keeper electrode (X).Scan pulse voltage (Vy) with the potential difference (PD) of position pulse voltage (Va), the wall voltage addition that produces with reseting period, thus orientation discharge will take place in the negative cell (cell) that adds position pulse voltage (Va).Because orientation discharge and in the selected cell (cell), will form a certain amount of wall electric charge, it is provided when keeping pulse voltage (Vs) keeping interdischarge interval, can discharge.During the above-mentioned location, continuing provides positive polarity DC voltage (Vdc) to keeping electrode (Z).Illustrate negative edge voltage in the above-mentioned accompanying drawing and (Vsetdown) (Vy) have identical value situation with scan pulse voltage, but in the case, for all discharge cells (cell), the evenly residual removing work of wall electric charge of the required upper substrate of orientation discharge may difficultly be realized, therefore, above-mentioned negative edge voltage (Vsetdown) according to circumstances, can have and the scan pulse voltage (Vy) voltage of different value.
During keeping, to scan electrode (Y) with keep electrode (Z) alternately negative adding and keep pulse voltage (Sus).By the selected cell of orientation discharge (cell) and since the wall voltage in the cell (cell) with keep pulse (Vs) addition, negative when adding each and keeping pulse, scan electrode (Y) with keep between electrode (Z) and all keep discharge, that is, indicate and discharge.
After keeping the discharge end, during can continuing to remove.Removing ramp waveform (Ramp-ers) voltage that reset pulse amplitude and voltage level are low during the removing for example, offers and keeps electrode (Z), thereby removes the interior residual wall electric charge of cell (cell) of whole image.
The power supply that Fig. 2 b provides the various voltages of the drive waveforms shown in Fig. 2 a provides the overall schematic of unit.(Vsetdown) (power supply during Vy) for base voltage provides the unit with scan pulse voltage to illustrate negative edge voltage among Fig. 2 b, keep pulse voltage (Vs), rising edge voltage (Vsetup), position pulse voltage (Va), a plurality of galvanic currents such as scan reference voltage (Vsc) are pressed, utilize AC/DC converter 21 and a plurality of DC/ DC converters 22,23,24,25, offer each drive unit.Again, power supply of the prior art provides the unit, by other DC/DC converter 26, to be used to drive standby (stand by) voltage of transistorized FET door (gate) driving voltage in the loop of PDP logical block (logic block) or PDP drive unit etc., 5V, voltages such as 15V offer PDP.
Fig. 2 c comprises that above-mentioned power supply provides unit and Plasmia indicating panel and the synoptic diagram of the PDP drive unit formed.Illustrate simply in the above-mentioned accompanying drawing, the situation of keeping pulse voltage (Vs) and position pulse voltage (Va) only is provided for convenience.
Shown in Fig. 2 c, in the prior art, power supply provides unit 27 directly to scanning electrode drive or keep electrod driving device 27 and provide and keep pulse voltage (Vs) about about 180 ~ 200V, provides the position pulse voltage about about 50 ~ 60V (Va) to keeper electrode drive unit 29.But, if will as above provide the power supply of position pulse voltage (Va) to be designed to than providing the power supply of keeping pulse voltage (Vs) little power supply, then in plasma display frame, show point-like (dot) figure On/Off, or wire (line) figure On/Off, during actual heavier figure (heavy pattern), because the maximum electric weight of moment increases sharply, and will cause power supply that the increase of unit expense is provided.
Therefore, in recent years proposed in order to reduce above-mentioned burden, shown in Fig. 3 a, form and utilize Vs/4 voltage, to scan electrode and keep electrode alternately negative add keep pulse keep the negative loop that adds of pulse, shown in Fig. 3 b, keep the required voltage waveform of discharge, will output to scan electrode with-pulse that Vs/2 forms and keep method in the electrode by Vs/2.Even the required voltage (Vs) of actual sustain discharge forms about 200Vdc, export aforesaid, by Vs/2 and-scan electrode of the voltage of the pulse waveform that Vs/2 forms and keep electrod driving device 32 and only drive with 50V, therefore, the power supply that can sharedly provide generation to keep the required voltage (Vs) of discharge provides unit 31, and position pulse voltage (Va) is provided.Promptly, even power supply in the prior art provides in the unit, deletion provides the power end of position pulse voltage (Va), as above design the PDP driver module, can also be shown in Fig. 3 c, provide the single power supply of reception the unit from power supply, thus driven sweep electrode and keep electrod driving device 32 and keeper electrode drive unit 33.Again, at this moment, general as full color figure (full colorpattern) etc., when keeping the discharge maximum, the required electric quantity consumption of orientation discharge diminishes; When the required electric weight of orientation discharge is maximum, keeps the required electric weight of discharge and diminish.Therefore, even above-mentioned two power supplys unite two into one, its electric weight provides capacity can realize that also electric weight of the prior art provides capacity.Therefore, shown in Fig. 3 c, design the plasma drive unit, then need not to increase the capacity that original power supply provides the unit, can also remove location power module (block), that is, power supply provides in the unit 31, the DC/DC converter that is provided with for position pulse voltage (Va) is provided etc.
But, general location voltage (Va), by location surplus (margin) and withstand voltage decision of location drive IC (not shown) that positions work, the general use about 50 ~ 60V, therefore, the plasma drive unit shown in Fig. 3 c is applicable to when actual PDP goes up, if do not guarantee to locate voltage margin (margin) fully, then will cause the orientation discharge instability, the performance and the reliability of the product that comprises Plasmia indicating panel will be brought ill effect.
Three, summary of the invention
In view of this, in order to address the above problem, a kind of power supply that generates the voltage of keeping the required voltage waveform of discharge that provides is provided, during with the power supply of the voltage that generates the position pulse voltage waveform, contingent location voltage margin (margin) problem, and increase the loop of boosting, thereby improve the drive unit and the driving method of the Plasmia indicating panel of performance and reliability.
Invent for addressing the above problem, the drive unit of the Plasmia indicating panel in the present invention's the 1st feature, comprise: keep the required waveform of discharge in order to provide to Plasmia indicating panel, and to scanning electrode drive or keep electrod driving device and provide the power supply of the 1st voltage that the unit is provided; And, utilize above-mentioned power supply that above-mentioned the 1st voltage of unit is provided in order to provide the position pulse waveform voltage to above-mentioned panel, and provide to the keeper electrode drive unit, have the loop of boosting with the 2nd voltage of the different sizes of above-mentioned the 1st voltage.
Again, the above-mentioned loop of boosting comprises: electric capacity; One side terminal provides above-mentioned the 1st voltage, the 1st switch that the opposite side terminal links to each other with an end of above-mentioned electric capacity; And a side terminal links to each other the 2nd switch of opposite side terminal ground connection with the tie point of an above-mentioned end of above-mentioned the 1st switch and above-mentioned electric capacity.Also comprise: possess positive pole (anode) that receives the 3rd voltage and the negative pole (cathode) that links to each other with the other end of above-mentioned electric capacity and the diode of formation with the potential difference (PD) size between above-mentioned the 2nd voltage and above-mentioned the 1st voltage.
Again, interdischarge interval or reseting period are being kept in the above-mentioned loop of boosting, because above-mentioned the 1st switch cuts out (turn-off), and above-mentioned the 2nd switch open (turn-on), and to above-mentioned electric capacity above-mentioned the 3rd voltage that charges; During locating, above-mentioned the 1st switch open (turn-on), above-mentioned the 2nd switch cuts out (turn-off), and from the above-mentioned opposite side terminal of above-mentioned electric capacity, provides above-mentioned the 2nd voltage to the keeper electrode drive unit.
Again, invent for addressing the above problem, the driving method of the Plasmia indicating panel in the present invention's the 2nd feature, comprise: during keeping interdischarge interval or reseting period, close (turn-off) above-mentioned the 1st switch, open (turn-on) above-mentioned the 2nd switch, charge stage of above-mentioned the 3rd voltage to above-mentioned electric capacity; And during locating, open (turn-on) above-mentioned the 1st switch, and close (turn-off) above-mentioned the 2nd switch, above-mentioned the 2nd voltage is offered the stage in above-mentioned keeper electrode driving loop from the above-mentioned opposite side terminal of above-mentioned electric capacity.
In the drive unit and driving method of above-mentioned Plasmia indicating panel, above-mentioned the 1st voltage has the voltage of 1/4 size of the required voltage of the discharge kept; Above-mentioned the 2nd voltage is compared the higher value that has below the 20V with above-mentioned the 1st voltage, i.e. the higher value of 5V or 15V; Above-mentioned the 3rd voltage provides the unit to provide by above-mentioned power supply.
Beneficial effect of the present invention is as follows:
Among the present invention, the power supply that generates the voltage of keeping the required voltage waveform of discharge comprehensively is provided, power supply with the voltage that generates the position pulse voltage waveform, the deletion power supply provides the location power end of unit, thereby not only can reduce the manufacturing expense of PDP device, can also solve location voltage margin (margin) problem that takes place when forming the drive unit of Plasmia indicating panel with simple method, thereby make orientation discharge keep stable with aforesaid way.
Four, description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION synoptic diagram of 3 electrode AC creeping discharge type Plasmia indicating panels in the prior art.
Fig. 2 a is an example schematic of the drive waveforms of PDP driving method in the prior art.
The power supply that Fig. 2 b provides the various voltages of the drive waveforms shown in Fig. 2 a provides the overall schematic of unit.
Fig. 2 c comprises that above-mentioned power supply provides unit and Plasmia indicating panel and the synoptic diagram of the PDP drive unit formed.
Fig. 3 a to Fig. 3 c utilizes to keep in the prior art of Vs/4 power supply that pulse is negative to add the loop, keeps the synoptic diagram of pulse waveform and PDP drive unit.
Fig. 4 is the drive unit synoptic diagram of the Plasmia indicating panel of an embodiment among the present invention.
Fig. 5 is an example schematic in the loop of the detailed structure in the illustrated loop of boosting in the displayed map 4.
Fig. 6 a and Fig. 6 b are the synoptic diagram that the work to the illustrated loop of boosting among Fig. 5 is elaborated.
Five, embodiment
Below, for the embodiment among the present invention, be elaborated as follows with reference to figure 4 to Fig. 6.
Fig. 4 is among the present invention, the drive unit synoptic diagram of the Plasmia indicating panel of an embodiment.Among Fig. 4, for simplicity, only illustrate to Plasmia indicating panel the required voltage (Vs) of discharge and the situation of position pulse voltage (Va) kept is provided.
With reference to figure 4, the drive unit of the Plasmia indicating panel in the one embodiment of the invention, comprise: provide the power supply of the voltage that generates the various voltages that drive Plasmia indicating panel 44 that unit 41 is provided, to scan electrode or keep electrode and the scanning electrode drive of keeping the required voltage waveform of discharge is provided or keeps electrod driving device 42, the keeper electrode drive unit 43 of position pulse waveform voltage is provided and utilizes above-mentioned power supply to provide the unit to above-mentioned scanning electrode drive or keep the voltage (Vs/4) that electrod driving device 42 provides to keeper electrode, the loop 45 of boosting of position pulse voltage (Va) is provided to keeper electrode drive unit 43.
Above-mentioned power supply provides unit 41, will have the voltage (Vs/4) of 1/4 size of keeping discharge required voltage (Vs), that is, 45 to 50V voltage offers scanning electrode drive or keeps electrod driving device 42.Scanning electrode drive or keep electrod driving device 42 utilizes power supply that the voltage of the Vs/4 that unit 41 provides is provided, provide to Plasmia indicating panel 34, shown in Fig. 3 b, by Vs/2 and-Vs/2 forms, keeps the voltage of the required waveform that discharges.
The above-mentioned loop 45 of boosting, voltage (Vs/4) maximum that provides unit 41 to offer above-mentioned scanning electrode drive the above-mentioned power supply or keep electrod driving device 42 boosts to 20V, and about 50 to 65V position pulse voltage (Va) is provided to keeper electrode drive unit 43.
Fig. 5 is an example schematic in the loop of the detailed structure in the illustrated loop 45 of boosting in the displayed map 4.
With reference to figure 4 and Fig. 5, Plasmia indicating panel 44 in the present invention provides the loop 45 of boosting of position pulse voltage (Va), comprise: the 1st switch (Q1) that an one terminal links to each other with the terminal that power supply provides unit 41 that the voltage of Vs/4 is provided, an one terminal links to each other with another terminal of above-mentioned the 1st switch (Q1), the 2nd switch (Q2) of its another terminal ground connection, the electric capacity (Cer) that an one terminal links to each other with the tie point of above-mentioned the 1st switch (Q1) and above-mentioned the 2nd switch (Q2).
Again, the above-mentioned loop 45 of boosting also comprises: its positive pole (anode) and the Vs/4 boost in voltage that power supply is provided unit 41 provide to the booster power 50 of certain booster voltage (Ver) links to each other the diode (D) that its negative pole (cathode) links to each other with the opposite side terminal of above-mentioned electric capacity (Cer).Position pulse voltage (Va) offers the keeper electrode drive unit on the tie point of above-mentioned electric capacity (Cer) and above-mentioned diode (D).
The course of work to the loop of boosting with said structure is elaborated as follows with reference to figure 6a and Fig. 6 b.
At first, reseting period or keep discharge shown in Fig. 6 a, is closed (turn-off) the 1st switch (Q1), opens (turn-on) the 2nd switch (Q2).If close (turn-off) the 1st switch (Q1), open (turn-on) the 2nd switch (Q2), then form from booster power 50, through diode (D), the current path of electric capacity (Cer) and the 2nd switch (Q2) will charge corresponding to the voltage of booster voltage (Ver) in the above-mentioned electric capacity (Cer).
Then, during the location, shown in Fig. 6 b, open (turn-on) the 1st switch (Q1), close (turn-off) the 2nd switch (Q2).If open (turn-on) the 1st switch (Q1), close (turn-off) the 2nd switch (Q2), then form from the power supply that Vs/4 voltage is provided unit 41 is provided, through the current path of the 1st switch (Q1) and electric capacity (Cer), at this moment, in the electric capacity (Cer) pre-charge booster voltage (Ver), therefore, will be provided position pulse voltage (Va) in the keeper electrode drive unit 43, promptly, with the value of booster voltage (Ver) with the voltage addition of Vs/4, that is, and the voltage of Ver+Vs/4.
As mentioned above, among the present invention, comprise the drive unit that the loop of boosting forms Plasmia indicating panel, then owing to deleted the location power end that power supply provides the unit, thereby not only can reduce the manufacturing expense of PDP device, can also offer the keeper electrode drive unit with original Vs/4 boost in voltage to certain voltage, therefore, can separate decision bit voltage margin (margin) problem.If provide the voltage (Vs/4) of keeping the required voltage (Vs) of discharge to rise, when the size of position pulse voltage (Va) is abundant, can stop the process of boosting again.Therefore, actual when being applicable on the Plasmia indicating panel, also guaranteed its degree of freedom.
Wherein, the size of above-mentioned booster voltage (Ver) is as long as can separate decision bit voltage margin (margin) problem, promptly very abundant.Shown in Fig. 2 b, the 5V voltage that can use power supply to provide the unit to offer PDP logical block (logic block), or use in the driving loop of Plasmia indicating panel FET door (gate) driving voltage, the i.e. voltage of 15V.Therefore, need not other design this moment booster voltage (Ver) is provided, other power supply can also utilize power supply of the prior art that the unit is provided, and separates decision bit voltage margin (margin) problem.
Among the present invention, the power supply that generates the voltage of keeping the required voltage waveform of discharge comprehensively is provided, power supply with the voltage that generates the position pulse voltage waveform, the deletion power supply provides the location power end of unit, thereby not only can reduce the manufacturing expense of PDP device, can also solve location voltage margin (margin) problem that takes place when forming the drive unit of Plasmia indicating panel with simple method, thereby make orientation discharge keep stable with aforesaid way.
Claims (10)
1, a kind of drive unit of Plasmia indicating panel is characterized in that: it comprises in order to provide to Plasmia indicating panel keeps the required waveform of discharge, and to scanning electrode drive or keep electrod driving device and provide the power supply of the 1st voltage that the unit is provided; And, utilize above-mentioned power supply that above-mentioned the 1st voltage of unit is provided in order to provide the position pulse waveform voltage to above-mentioned panel, and provide to the keeper electrode drive unit, have the loop of boosting with the 2nd voltage of the different sizes of above-mentioned the 1st voltage; Above-mentioned the 1st voltage has the voltage of 1/4 size of the required voltage of the discharge kept; Above-mentioned the 2nd voltage is compared the higher value that has below the 20V with above-mentioned the 1st voltage; The above-mentioned loop of boosting comprises electric capacity; One side terminal provides above-mentioned the 1st voltage, the 1st switch that the opposite side terminal links to each other with an end of above-mentioned electric capacity; One side terminal links to each other with the tie point of an above-mentioned end of above-mentioned the 1st switch and above-mentioned electric capacity, the 2nd switch of opposite side terminal ground connection; The above-mentioned loop of boosting also comprises the diode that possesses the positive pole that receives the 3rd voltage with the potential difference (PD) size between above-mentioned the 2nd voltage and above-mentioned the 1st voltage and the negative pole that links to each other with the other end of above-mentioned electric capacity and form.
2, the drive unit of Plasmia indicating panel according to claim 1 is characterized in that: above-mentioned the 2nd voltage, compare higher value with above-mentioned the 1st voltage with 5V.
3, the drive unit of Plasmia indicating panel according to claim 1 is characterized in that: above-mentioned the 2nd voltage, compare higher value with above-mentioned the 1st voltage with 15V.
4, the drive unit of Plasmia indicating panel according to claim 1 is characterized in that: keeping interdischarge interval or reseting period, because above-mentioned the 1st switch cuts out, above-mentioned the 2nd switch open is to above-mentioned electric capacity the 3rd voltage that charges.
5, the drive unit of Plasmia indicating panel according to claim 4 is characterized in that: above-mentioned the 3rd voltage provides the unit to provide by above-mentioned power supply.
6, the drive unit of Plasmia indicating panel according to claim 1, it is characterized in that: during locating, above-mentioned the 1st switch open, above-mentioned the 2nd switch cuts out, and, provide above-mentioned the 2nd voltage to the keeper electrode drive unit from the above-mentioned other end of above-mentioned electric capacity.
7, a kind of method of utilizing the drive unit driving Plasmia indicating panel of the described Plasmia indicating panel of claim 1 is characterized in that it comprised with the next stage:
Keeping interdischarge interval or reseting period, closing above-mentioned the 1st switch, opening above-mentioned the 2nd switch, charging stage of above-mentioned the 3rd voltage to above-mentioned electric capacity; And during locating, open above-mentioned the 1st switch, and close above-mentioned the 2nd switch, above-mentioned the 2nd voltage is offered the stage of above-mentioned keeper electrode drive unit from the above-mentioned other end of above-mentioned electric capacity.
8, the method for driving Plasmia indicating panel according to claim 7 is characterized in that: above-mentioned the 2nd voltage, compare higher value with above-mentioned the 1st voltage with 5V.
9, the method for driving Plasmia indicating panel according to claim 7 is characterized in that: above-mentioned the 2nd voltage, compare higher value with above-mentioned the 1st voltage with 15V.
10, the method for driving Plasmia indicating panel according to claim 7 is characterized in that: above-mentioned the 3rd voltage provides the unit to provide by above-mentioned power supply.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-0023383 | 2006-03-14 | ||
| KR1020060023383 | 2006-03-14 | ||
| KR1020060023383A KR100746256B1 (en) | 2006-03-14 | 2006-03-14 | Driving apparatus and method for plasma display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1920923A CN1920923A (en) | 2007-02-28 |
| CN100435197C true CN100435197C (en) | 2008-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101596192A Expired - Fee Related CN100435197C (en) | 2006-03-14 | 2006-09-26 | Plasma display panel drive method and drive device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100746256B1 (en) |
| CN (1) | CN100435197C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100839917B1 (en) | 2007-02-16 | 2008-06-19 | (주)파워뷰 | A power supplying circuit for pdp tv |
| US7598894B2 (en) * | 2007-10-19 | 2009-10-06 | Himax Technologies Limited | Source driver and digital-to-analog converter thereof |
| KR101070027B1 (en) | 2009-10-30 | 2011-10-04 | 삼성전기주식회사 | Plasma display panel driver |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1026955A (en) * | 1996-07-10 | 1998-01-27 | Fujitsu General Ltd | Pdp display device mounted on dc/dc converters |
| US6388901B2 (en) * | 2000-03-15 | 2002-05-14 | Nec Corporation | Power supply |
| CN1507272A (en) * | 2002-12-10 | 2004-06-23 | 乐金电子（沈阳）有限公司 | Power supply controller for plasma television |
| CN1573853A (en) * | 2003-06-20 | 2005-02-02 | 三星电子株式会社 | High-efficiency power supply apparatus used with a display panel driving system and method thereof |
| JP2005196131A (en) * | 2003-10-28 | 2005-07-21 | Matsushita Electric Ind Co Ltd | Capacitive load driver and plasma display carrying same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4945033B2 (en) * | 2001-06-27 | 2012-06-06 | 日立プラズマディスプレイ株式会社 | Plasma display device |
| KR100467450B1 (en) * | 2002-03-18 | 2005-01-24 | 삼성에스디아이 주식회사 | Plasma display panel and driving apparatus and method thereof |
-
2006
- 2006-03-14 KR KR1020060023383A patent/KR100746256B1/en not_active IP Right Cessation
- 2006-09-26 CN CNB2006101596192A patent/CN100435197C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1026955A (en) * | 1996-07-10 | 1998-01-27 | Fujitsu General Ltd | Pdp display device mounted on dc/dc converters |
| US6388901B2 (en) * | 2000-03-15 | 2002-05-14 | Nec Corporation | Power supply |
| CN1507272A (en) * | 2002-12-10 | 2004-06-23 | 乐金电子（沈阳）有限公司 | Power supply controller for plasma television |
| CN1573853A (en) * | 2003-06-20 | 2005-02-02 | 三星电子株式会社 | High-efficiency power supply apparatus used with a display panel driving system and method thereof |
| JP2005196131A (en) * | 2003-10-28 | 2005-07-21 | Matsushita Electric Ind Co Ltd | Capacitive load driver and plasma display carrying same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100746256B1 (en) | 2007-08-03 |
| CN1920923A (en) | 2007-02-28 |
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