CN101404138A - Plasma display device - Google Patents
Plasma display device Download PDFInfo
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- CN101404138A CN101404138A CNA2008102110208A CN200810211020A CN101404138A CN 101404138 A CN101404138 A CN 101404138A CN A2008102110208 A CNA2008102110208 A CN A2008102110208A CN 200810211020 A CN200810211020 A CN 200810211020A CN 101404138 A CN101404138 A CN 101404138A
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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
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
- G09G3/2965—Driving circuits for producing the waveforms applied to the driving electrodes using inductors for energy recovery
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
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- Engineering & Computer Science (AREA)
- 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)
- Control Of Gas Discharge Display Tubes (AREA)
Abstract
The invention discloses a plasma display device, including a first drive section providing a driving signal to the sweeping electrodes formed on the plasma display panel; a second drive section providing a driving signal to the sustain electrode; and a drive control section, generating a control signal controlling the operations of the first and second drive sections and transmitting the control signal to the first and second drive sections. If error occurs when the drive control section transmits the control signal to the first drive section, the drive control section will terminate the transmission of the drive control section to the second drive section. When the invention transmits a control signal to one of the scanning drive section and the sustain drive section, if error occurs, the invention will terminate the transmission of the drive control section to the other drive section, accordingly the invention can prevent damage to the drive circuit and improve the reliability of the plasma display device.
Description
Technical field
The invention relates to plasma display system, more specifically say it is a kind of plasma display system about the drive division that drives Plasmia indicating panel.
Background technology
Plasma display system, comprise the panel that has formed a plurality of discharge cells (cell) between the back substrate that possesses interlayer and front on the other side substrate, and for selected picture signal, optionally above-mentioned a plurality of discharge cells (cell) are discharged, thereby the vacuum ultraviolet of above-mentioned discharge generation makes the light-emitting phosphor display image.
For display image effectively, plasma display system comprises: the general pattern signal to input is handled, and a plurality of electrodes that comprise in panel provide the driving control devices such as drive division of drive signal.
When above-mentioned drive division and drive controlling loop are damaged, may cause the remarkable reduction of the image quality of display image, therefore, be necessary to make above-mentioned loop stably to work.
Summary of the invention
In view of this, in order to address the above problem, purpose of the present invention provides a kind of can improve the plasma display system of stability that the driving loop of drive signal is provided to Plasmia indicating panel.
Invent for addressing the above problem, plasma display system among the present invention, comprise: possess a plurality of scannings (scan) electrode that forms on the upper substrate and keep (sustain) electrode, with the Plasmia indicating panel of a plurality of location (address) electrode that forms on the lower basal plate; And provide the drive division of drive signal to above-mentioned a plurality of electrodes, and above-mentioned drive division comprises: provide the 1st drive division of drive signal to above-mentioned scanning (scan) electrode, the 2nd drive division of drive signal is provided to above-mentioned a plurality of keeping (sustain) electrode; And the control signal of the work of above-mentioned the 1st, 2 drive division of generation control, and transfer to the above-mentioned the 1st, the drive control part of 2 drive divisions, above-mentioned drive control part if produce mistake, then can stop to above-mentioned the 2nd drive division transmission of control signals to above-mentioned the 1st drive division transmission of control signals the time.
Plasma display system among the present invention, to being divided into a plurality of scannings (scan) electrode of group (Group) more than 2, be divided into the child group (Sub Group) more than 2 once more, and carry out the timesharing driving, and, change its scan bias voltage (scan bias) respectively to each height group (Sub Group), thereby can realize high-speed driving, can reduce simultaneously the location (address) that the minimizing of wall electric charge causes and misplace electricity, therefore, can improve the image quality of display image.
Description of drawings
Fig. 1 is among the present invention, an embodiment synoptic diagram of Plasmia indicating panel structure.
Fig. 2 is an embodiment sectional view of the electrode spread of Plasmia indicating panel.
Fig. 3 is divided into a plurality of subdomains (subfield) with a frame (frame), and the article on plasma display panel carries out an embodiment sequential chart of timesharing (time sharing) method of driving.
Fig. 4 is among the present invention, an example sequential chart of the waveform of the drive signal of driving Plasmia indicating panel.
Fig. 5 is an embodiment synoptic diagram of structure that drives the drive unit of Plasmia indicating panel.
Fig. 6 is an embodiment calcspar of the simple structure of the drive control part that possesses in the plasma display system.
Fig. 7 is among the present invention, the 1st embodiment calcspar of the structure of drive unit.
Fig. 8 is among the present invention, the 2nd embodiment calcspar of the structure of drive unit.
Fig. 9 is an embodiment loop diagram of the structure of the energy recovery circuit that possesses in the plasma display system.
Embodiment
Below, lift preferred embodiment, and conjunction with figs. is described in detail as follows to the plasma display system among the present invention.Fig. 1 is among the present invention, an embodiment synoptic diagram of Plasmia indicating panel structure.
As shown in Figure 1, Plasmia indicating panel comprises: be positioned at keeping on the upper substrate 10 (sustain) electrode pair, that is, scan (scan) electrode 11 and keep (sustain) electrode 12; Be positioned at location (address) electrode 22 on the lower basal plate 20.
Above-mentioned keeping (sustain) electrode pair 11,12 generally comprises by tin indium oxide (Indium-Tin-Oxide; ITO) the transparency electrode 11a of Xing Chenging, 12a and bus electrode 11b, 12b, above-mentioned bus electrode 11b, 12b can be by silver (Ag), chromium (Cr) metal of etc.ing or chromium/copper/chromium (Cr/Cu/Cr) stack and forming, or superpose and form by chromium/aluminium/chromium (Cr/Al/Cr).Bus electrode 11b, 12b are positioned on transparency electrode 11a, the 12a, play the effect that voltage that reduction causes because of the high transparency electrode 11a of resistance, 12a descends.
On the one hand, according to one embodiment of present invention, keep (sustain) electrode pair 11,12 and not only can be formed by stacking, can also not need transparency electrode 11a, 12a, only form by bus electrode 11b, 12b by transparency electrode 11a, 12a and bus electrode 11b, 12b.Said structure does not use transparency electrode 11a, 12a, therefore can reduce the cost that panel is made.The bus electrode 11b, the 12b that are used for said structure can use above-named material multiple materials such as photosensitive material in addition.
Scanning (scan) electrode 11 and keeping between transparency electrode 11a, the 12a and bus electrode 11b, 11c of (sustain) electrode 12, arranging exterior light with the outside generation that absorbs upper substrate 10, black matrix (Black Matrix, BM) 15 of the purity (Purity) of disconnected function of the photoresistance of reduction reflection and raising upper substrate 10 and the function of contrast (contrast).
Black matrix in one embodiment of the present of invention (black matrix) 15 is positioned on the upper substrate 10, can be by the 1st black matrix (black matrix) that is positioned at interlayer 21 position overlapped, and the 2nd black matrix (black matrix) 11c, the 12c that are positioned between transparency electrode 11a, 12a and bus electrode 11b, 12b form.Wherein, the 1st black matrix (black matrix) 15 and the 2nd black matrix (blackmatrix) 11c, the 12c that are called as black layer or black electrode layer form in the process that forms simultaneously and physical property ground connects, and can also not form simultaneously, and physical property ground does not connect.
Again, when being connected to form to physical property, the 1st black matrix (black matrix) 15 forms with identical material with the 2nd black matrix (blackmatrix) 11c, 12c, and physical property ground separates when forming, and can be formed by unlike material.
Form superpose on scanning (scan) electrode 11 and the upper substrate 10 of keeping (sustain) electrode 12 upper dielectric layer 13 and diaphragm 14 side by side.Gather the charged particle of discharge generation on the upper dielectric layer 13, and execute protection is kept the function of (sustain) electrode pair 11,12.Protect upper dielectric layer 13 in the injection of the charged particle that diaphragm 14 produces (spattering) process when gas discharge, thereby improve the emission efficiency of 2 electronics.
Again, location (address) electrode 22 is with scanning (scan) electrode 11 and keep the direction formation that (sustain) electrode 12 intersects.To form lower dielectric layer 23 and interlayer 21 on the lower basal plate 20 of formation location (address) electrode 22 again.
Again, lower dielectric layer 23 forms luminescent coating with interlayer 21 surfaces.Interlayer 21 by vertical interlayer 21a with laterally form to interlayer 21b enclosed type, and dividing discharge cell (cell) physically prevents that the ultraviolet ray of discharge generation and visible rays from leaking in the adjacent discharge cell (cell).
In one embodiment of the present of invention, be not only illustrated interlayer 21 structures among Fig. 1, the interlayer 21 of other multiple shapes is also passable.For example, the vertical different type spacer structure such as difference of height of interlayer 21a and horizontal interlayer 21b, vertically among interlayer 21a or the horizontal interlayer 21b, formation can be used as the pipeline type spacer structure of the passage (Channel) of gas exhaust duct at least one, vertically among interlayer 21a or the horizontal interlayer 21b, form the grooved spacer structure of groove (Hollow) etc. at least more than one.
Wherein, type spacer structure such as difference, the height of its horizontal interlayer 21b should be higher, and pipeline type spacer structure or grooved spacer structure should laterally form pipeline or groove on the interlayer 21b.
On the one hand, in one embodiment of the present of invention, to R, the structure that G and B discharge cell (cell) are arranged in respectively on the same line is that example has been carried out diagram and explanation, and right, arranging with other shapes can also.For example, R, G and B discharge cell (cell) can also with the arrangement of triangle (Delta) type that leg-of-mutton shape is arranged.Again, the shape of discharge cell (cell) also is not limited to quadrilateral, pentagon, and multiple polygon such as sexangle can also.
Again, above-mentioned luminescent coating is because the ultraviolet ray that produces during gas discharge and luminous produces red (R) a certain visible light in green (G) or blue (B).Wherein, in the discharge space that upper/ lower substrate 10,20 and interlayer are 21, can produce the He+Xe of discharge, inert mixed gas such as Ne+Xe and He+Ne+Xe with injecting.
Fig. 2 is an embodiment sectional view of the electrode spread of Plasmia indicating panel, and a plurality of discharge cells (cell) of composition Plasmia indicating panel should be arranged with matrix (matrix) shape as shown in Figure 2.A plurality of discharge cells (cell) lay respectively at scanning (scan) rows of electrodes (line) (Y1 to Ym), keep (sustain) rows of electrodes (line) (Z1 to Zm) and the cross section of (reset) rows of electrodes (line) (X1 to Xn) that resets.Scanning (scan) rows of electrodes (line) (Y1 to Ym) can drive successively or drive simultaneously, and keeping (sustain) rows of electrodes (line) (Z1 to Zm) can drive simultaneously.Location (address) rows of electrodes (line) (X1 to Xn) can be divided into odd-numbered line and even number line drives or drives successively.
Illustrated electrode spread is only represented an embodiment of the electrode spread of ionic medium panel of the present invention among Fig. 2, and the present invention is not electrode spread and the type of drive that is subject to illustrated Plasmia indicating panel among Fig. 2 (Plasma Display Panel).For example, in above-mentioned scanning (scan) rows of electrodes (line) (Y1 to Ym), also allow 2 scannings (scan) rows of electrodes (line) to scan double scanning (dual scan) mode of (scan) simultaneously.Again, about above-mentioned location (address) rows of electrodes (line) (X1 to Xn) can be divided at the middle body of panel, or left and right sides two parts drive.
Fig. 3 is divided into a plurality of subdomains (subfield) with a frame (frame), and the article on plasma display panel carries out an embodiment sequential chart of timesharing (time sharing) method of driving.Unit frame (frame) shows in order to realize the timesharing GTG, can be divided into the subdomain (subfield) of certain quantity, for example: 8 subdomains (subfield) (SF1 ..., SF8).Again, each subdomain (subfield) (SF1 ... SF8) be divided into (reset) interval (not shown) that reset, interval, location (address) (A1 ..., A8), and keep (sustain) interval (S1 ..., S8).
Wherein,, reset to omit in (reset) interval at least one in a plurality of subdomains (subfield) according to one embodiment of present invention.For example, (reset) interval that resets can exist only in first subdomain (subfield), or exists only in first subdomain (subfield) and the whole subdomain (subfield), in the subdomain of center section (subfield).
Each interval, location (address) (A1 ..., A8) in, to the negative display data signal that adds of location (address) electrode (X), to the negative successively scanning impulse (scan pulse) that adds rising of each scanning (scan) electrode (Y).
Respectively keep (sustain) interval (S1, S8) in, to scanning (scan) electrode (Y) with keep (sustain) electrode (Z) alternatively negative adding and keep pulse (sustain pulse), interval (the A1 in location (address),, A8) discharge cell that is formed by the wall electric charge (cell) produces and keeps (sustain) discharge.
Shared the keeping of the brightness of Plasmia indicating panel and unit frame (frame) (sustain) discharge range (S1 ..., S8) Nei (sustain) discharge pulse quantity of keeping is directly proportional.Form a frame (frame) of 1 image, when showing 8 subdomains (subfield) and 256 GTGs, each subdomain (subfield) will be successively with 1,2,4,8,16,32,64,128 proportional distribution varying number keep pulse (sustainpulse).If will obtain the brightness of 133 GTGs, can be in subdomain (subfield) 1 interval, in subdomain (subfield) 3 intervals and subdomain (subfield) 8 intervals cell (cell) is positioned (addressing), thereby keep (sustain) discharge.
Distribute to the keeping of each subdomain (subfield) (sustain) discharge quantity, can change along with the weight (weight) of the subdomain (subfield) in APC (Automatic Power Control) stage.That is, be that example is illustrated with the situation that a frame (frame) is divided into 8 subdomains (subfield) among Fig. 3, right the present invention is subject to this, can carry out numerous variations to subdomain (subfield) number that forms a frame (frame) according to styles design.For example, a frame (frame) can be divided into 12 or 16 subdomains (subfield) etc., can be divided into more than 8 subdomains (subfield), the article on plasma display panel drives.
Again, distribute to the keeping of each subdomain (subfield) (sustain) discharge quantity, can consider its gamma (gamma) characteristic or panel characteristics, carry out numerous variations.For example, the shade of gray of distributing to subdomain (subfield) 4 can be reduced to 6 from 8, the shade of gray that will distribute to subdomain (subfield) 6 rises to 34 from 32.
Fig. 4 is among the present invention, drives an embodiment sequential chart of the drive signal of Plasmia indicating panel.
Above-mentioned subdomain (subfield) comprises: go up at scanning (scan) electrode (Y) and form positive polarity wall electric charge, keeping upward (pre reset) interval that resets in advance of formation negative polarity wall electric charge of (sustain) electrode (Z); Utilize reset in advance (pre reset) interval wall CHARGE DISTRIBUTION that forms, the discharge cell (cell) of whole image is carried out initialized resetting (reset) interval; Select the interval, location (address) of discharge cell (cell); And keep (sustain) selected discharge cell (cell) discharge condition keep (sustain) interval.
Resetting, (reset) is interval to be formed by rising edge (setup) interval and negative edge (setdown) interval, in above-mentioned rising edge (setup) interval, simultaneously to the negative rising ramp waveform (Ramp-up) that adds of all scannings (scan) electrode, in all discharge cells (cell), produce faint discharge, and produce the wall electric charge thus.In above-mentioned negative edge (setdown) interval, simultaneously to the negative decline ramp waveform (Ramp-down) that begins to descend from the low positive polarity voltage of ceiling voltage that adds of all scannings (scan) electrodes (Y) than above-mentioned acclivity waveform (Ramp-up), in all discharge cells (cell), produce to remove discharge, and remove unnecessary electric charge in the wall electric charge of rising edge discharge generation and the space charge (space charge) thus.
Location (address) is interval to negative successively scanning (scan) signal with negative polarity scanning (scan) voltage (Vsc) that adds of scanning (scan) electrode, meanwhile, and to the negative positive polarity digital signal that adds of above-mentioned location (address) electrode (X).Because the wall electric charge that produces during pressure reduction between above-mentioned scanning (scan) signal and digital signal and above-mentioned resetting (reset) interval produces location (address) discharge, selects cell (cell).On the one hand, in order to improve the efficient of location (address) discharge,, will keep (sustain) bias voltage (Vzb) to keeping (sustain) electrode negative adding in interval, above-mentioned location (address).
During the interval, above-mentioned location (address), a plurality of scannings (scan) electrodes (Y) are divided into the group (Group) more than 2, and can organize (Group) by each and be provided scanning (scan) signal successively, the above-mentioned group of cutting apart (Group) is divided into the child group (Sub Group) more than 2 respectively again, and can be provided scanning (scan) signal successively by above-mentioned each son group (SubGroup).For example: a plurality of scannings (scan) electrodes (Y) are divided into the 1st group (Group) and the 2nd group (Group), and provide scanning (scan) signal successively to scanning (scan) electrode that belongs to above-mentioned the 1st group (Group), then, provide scanning (scan) signal successively to scanning (scan) electrode that belongs to above-mentioned the 2nd group (Group).
According to one embodiment of present invention, a plurality of scannings (scan) electrodes (Y) can be divided into according to the position that is positioned on the panel, are positioned at even number (even) individual the 1st group (Group), and are positioned at odd number (odd) individual the 2nd group (Group); Again, as another embodiment, can also be that benchmark is divided into the center of panel, be positioned at the 1st group (Group) of top, and the 2nd group (Group) below being positioned at.
Cut apart as above-mentioned method, belong to scanning (scan) electrode of the 1st group (Group), can be divided into again, be positioned at the 1st individual son group (Sub Group) of even number (even), and be positioned at the 2nd individual son group (Sub Group) of odd number (odd); Or be that benchmark is divided into the center of above-mentioned the 1st group (Group), be positioned at the 1st son group (Sub Group) of top, and be positioned at the 2nd son group (Sub Group) of below.
In above-mentioned keeping (sustain) interval, to scanning (scan) electrode with keep (sustain) electrode alternately negative add have keep (sustain) power supply (Vs) keep (sustain) pulse, thereby scanning (scan) electrode with keep keep (sustain) that produce the surface-discharge form between (sustain) electrode and discharge.
Keep (sustain) interval, to scanning (scan) electrode with keep in a plurality of keeping (sustain) signal that (sustain) electrode alternately provides, it is big that the width of cloth that first keeps (sustain) signal or last keeps (sustain) signal can be kept pulse (sustain pulse) width of cloth than other.
After above-mentioned keeping (sustain) discharge takes place, can also comprise: make scanning (scan) electrode of the selected unlatching cell (ON cell) in interval, location (address) or keep the faint discharge of generation in (sustain) electrode, thereby remove between the clear (area) of residual wall electric charge.
Between above-mentioned clear (area), can be included in the whole or some of subdomains (subfield) of a plurality of subdomains (subfield), and should be in keeping (sustain) interval, to the not negative electrode that last keeps (sustain) pulse, the negative clear signal that produces above-mentioned faint discharge that adds of adding.
Above-mentioned clear signal can be used oblique wave (ramp) the type signal that rises gradually, the wide wave impulse of low-voltage (low-voltage wide pulse), the narrow wave impulse of high voltage (high-voltage narrow pulse) is signal (exponential signal) that how much shapes increase or half-sinusoidal pulse etc.
Again, in order to produce above-mentioned faint discharge, can also or keep (sustain) electrode, negatively successively add a plurality of pulses to scanning (scan) electrode.
Illustrated oscillogram is among the present invention among Fig. 4, drives an embodiment sequential chart of the drive signal of Plasmia indicating panel, and right, the present invention is subject to illustrated waveform among Fig. 4.For example, can omit above-mentioned (pre reset) interval that resets in advance, and the polarity of illustrated drive signal and voltage strength (level) can change as required among Fig. 4, after above-mentioned keeping (sustain) discharge finishes, can also be to keeping the negative clear signal of removing the wall electric charge that adds of (sustain) electrode.Again, above-mentioned keeping (sustain) signal is only negative to be added in scanning (scan) electrode (Y) and to keep (sustain) (Z) on the some electrodes in the electrode, produce the one-dimensional of keeping (sustain) discharge hold (single sustain) driving can also.
Fig. 5 is an embodiment synoptic diagram of structure that drives the drive unit of Plasmia indicating panel.
With reference to figure 5, heat sink (radiator frame) 30 is positioned at the back side of panel, plays the effect of support panel, absorbs the heat and the heat radiation that produce on the panel simultaneously.Again, the back side of heat sink (radiator frame) 30 will be installed to the negative printed circuit board (PCB) (PCB:Printed Circuit Board) that adds drive signal of panel.
Above-mentioned printed circuit board (PCB) (PCB:Printed Circuit Board) 40, comprise: location (address) drive division 50 that drive signal is provided to the location of panel (address) electrode, scanning (scan) drive division 60 of drive signal is provided to scanning (scan) electrode of panel, to panel keep that (sustain) electrode provides drive signal keep (sustain) drive division 70, the drive control part 80 of control said driving circuit, reach to each and drive power supply unit (Power Supply Unit, PSU) 90 that loop provides power supply.
Location (address) drive division 50, the location that forms on panel (address) electrode provides drive signal, thereby in a plurality of discharge cells (cell) that form on panel, only selects the discharge cell (cell) that can discharge.
Location (address) drive division 50 according to single sweep (single scan) mode or two scanning (dualscan) mode, with on some in the top that is installed in panel and the below, or is installed on top and the below.
Location (address) drive division 50, negative be added in the electric current on the electrode of above-mentioned location (address) and digital IC (not shown) is installed in order to control, and above-mentioned digital IC carries out rectification (switching) in order to control the negative electric current that adds, thereby will produce a large amount of heats.Therefore, location (address) drive division 50 will be installed heat radiator (heat sink) (not shown) in order to remove the heat that produces in the above-mentioned control procedure.
As shown in Figure 5, scanning (scan) drive division 60 can comprise: panel (sustain scan board) 62 is kept in the scanning that is connected with drive control part 80, and connects the turntable driving panel (sustain driver board) 64 that panel (sustain scanboard) 62 and panel are kept in scanning.
Turntable driving panel (sustain driver board) 64 can be divided into top and below 2 parts and installing, can also with Fig. 5 in illustrated different, an integral body is installed or installs a plurality of.
Scanning (scan) electrode to panel will be installed on the turntable driving panel (sustain driver board) 64 provides the scans I C65 of drive signal, scans I C65 can scan (scan) and keep (sustain) signal to negative continuously add reset (reset) of above-mentioned scanning (scan) electrode.
Keep (sustain) drive division 70 and provide drive signal to (sustain) electrode of keeping of panel.
Drive control part 80, utilization is stored in the signal Processing information in the storer (memory), picture signal to input is carried out certain signal Processing, being converted into can be to locating the data that (address) electrode provides, and can by scanning (scan) in proper order above-mentioned data converted be arranged.Again, drive control part 80, to location (address) drive division 50, scanning (scan) drive division 60 and keep (sustain) drive division 70 sequential control (timing control) signal is provided, thus drive signal that can the controlling and driving loop provides constantly.
As shown in Figure 5, between drive control part 80 and scanning (scan) drive division 60, and drive control part 80 and keeping between (sustain) drive division 70, can connect the cable (cable) 81,82 of transmission of control signals.
If because of not connecting above-mentioned cable reasons such as (cable), cause to scanning (scan) drive division 60 or keeping in the process of (sustain) drive division 70 transmission of control signals and produce mistake, so cause the panel can't operate as normal.
When in scanning (scan) drive division 60 and the process of keeping any one the drive division transmission of control signals in (sustain) drive division 70, producing when wrong, may cause having only other drive divisions in work again.For example, at drive control part 80 and scanning 60 disconnected cables of (scan) drive division (cable) 81 o'clock, only keep (sustain) drive division 70 and receive drive control part 80 control signals transmitted, therefore, keeping (sustain) drive division 70 generation hard switching (hard switching) phenomenons, thereby the loop that causes being included in wherein is damaged.
Fig. 6 is an embodiment calcspar of the simple structure of the drive control part that possesses in the plasma display system, and illustrated drive control part comprises: signal processing part 100, flash memory (flash memory) 110, sequential control portion 120, array portion 130, digital drive portion 140.
Plasma display system among the present invention can possess VSC panel (not shown), and above-mentioned VSC panel (not shown) is treated to the signal that may be displayed on the above-mentioned Plasmia indicating panel with the picture signal of input, and sends above-mentioned control part to.For example, above-mentioned VSC panel (not shown) according to the resolution of above-mentioned Plasmia indicating panel, carries out convergent-divergent (scaling) to the picture signal of input.
It is required that sequential control portion 120 generates above-mentioned timing control signal, necessary driving sequential relevant information, for example: each length of an interval degree when panel 160 timesharing drive, above-mentioned each interval type (Type) (A or B) etc. will be stored in the flash memory (flash memory) 110.Sequential control portion 120 receives the above-mentioned driving time sequence information of having stored from flash memory (flash memory) 110, and (H V), generates above-mentioned timing control signal to utilize the driving time sequence information of above-mentioned reception and above-mentioned vertical/horizontal synchronizing signal.
Scan/keep (scan/sustain) drive division 150, utilize the timing control signal of sequential control portion 120 inputs, generate scanning (scan) electrode and the drive signal of keeping (sustain) electrode, and negative scanning (scan) electrode (not shown) that is added in panel 160 with keep on (sustain) electrode (not shown).
Fig. 7 is among the present invention, the 1st embodiment calcspar of the structure of drive unit.
With reference to figure 7, drive control part (200), comprise: generate to scanning (scan) drive division 210 and keep the control signal generating unit 201 of the control signal of (sustain) drive division 220 outputs, the above-mentioned control signal that has generated is transferred to scanning (scan) drive division 210 respectively and keeps the 1st of (sustain) drive division 220,2 impact dampers (buffer) 202,203.
The 1st impact damper (buffer) 202, reception from drive control part 200 when keeping (sustain) drive division 220 transmission of control signals, whether produce wrong information, and according to the signal of above-mentioned input, whether control is to scanning (scan) drive division 210 transmission of control signals.Promptly, signal according to above-mentioned input, when from drive control part 200 when keeping (sustain) drive division 220 transmission of control signals, produced under the wrong situation, the 1st impact damper (buffer) 202 will stop to keeping (sustain) drive division 220 transmission of control signals.
Again, the 2nd impact damper (buffer) 203 receives from drive control part 200 when scanning (scan) drive division 210 transmission of control signals, whether produces wrong information, and according to the signal of above-mentioned input, whether control is to keeping (sustain) drive division 220 transmission of control signals.That is, according to the signal of above-mentioned input, when, having produced under the wrong situation during to scanning (scan) drive division 210 transmission of control signals from drive control part 200, the 2nd impact damper (buffer) 203 will stop to scanning (scan) drive division 210 transmission of control signals.
Fig. 8 is among the present invention, the 2nd embodiment calcspar of the structure of drive unit.
With reference to figure 8, drive control part 300 is connected by the 1st cable (cable) 330 with scanning (scan) drive division 310, drive control part 300 with keep (sustain) drive division 320 and be connected by the 2nd cable (cable) 340.
Again, buffering (buffer) signal input end (OE) of the 2nd impact damper (buffer) 303 and scanning (scan) drive division 310, be connected by above-mentioned the 1st cable (cable) 330, buffering (buffer) signal input end (OE) of the 1st impact damper (buffer) 302 with keep (sustain) drive division 320, be connected by above-mentioned the 2nd cable (cable) 340.
The 1st, 2 impact dampers (buffer) 302,303, when when signal input end (OE) input has buffering (buffer) control signal of high-grade (high level) voltage, the signal that control signal generating unit 301 generates will or be kept 320 outputs of (sustain) drive division not to scanning (scan) drive division 310.When buffering (buffer) control signal to signal input end (OE) input has inferior grade (low level) voltage, the 1st, 2 impact damper (buffer) 302,303 will or be kept the above-mentioned control signal of (sustain) drive division 320 outputs to scanning (scan) drive division 310.
As shown in Figure 8, the drive control part 300 in one embodiment of the present of invention can comprise pull-up resistor (pull up resistance) 305,306.
Pull-up resistor (pull up resistance) 305,306 respectively can be in parallel with the connecting line of keeping between (sustain) drive division 320 (line) with connecting line (line) and the 1st impact damper (buffer) 302 between scanning (scan) drive division 310 with the 2nd impact damper (buffer) 303.Again, the signal input end of an end of above-mentioned connecting line (line) and the 1st, 2 impact damper (buffer) 302,303 is connected, and the other end of above-mentioned connecting line (line) then is connected with ground (GND).
In the aforesaid structure, between drive control part 300 and scanning (scan) drive division 310, do not connect the 1st cable (cable) 330 o'clock, because pull-up resistor (pull up resistance) 305, the signal input end (OE) of the 2nd impact damper (buffer) 303 will be transfused to buffering (buffer) control signal with high-grade (high level) voltage, therefore, will stop transmission by the 2nd impact damper (buffer) 303 to keeping (sustain) drive division 320 control signals transmitted.
Again, when drive control part 300 and keep between (sustain) drive division 320, do not connect the 2nd cable (cable) 340 o'clock, because pull-up resistor (pull up resistance) 306, the signal input end (OE) of the 1st impact damper (buffer) 302 will be transfused to buffering (buffer) control signal with high-grade (high level) voltage, therefore, will stop transmission by the 1st impact damper (buffer) 302 to scanning (scan) drive division 310 control signals transmitted.
Fig. 9 is an embodiment loop diagram of the structure of the energy recovery circuit that possesses in the plasma display system.
As shown in Figure 9, utilize to reclaim and storage to scanning (scan) electrode and the source electric capacity (source capacitor) of keeping the energy that (sustain) electrode provides (C), reach the inductance (L) that forms resonance circuit with above-mentioned source electric capacity (source capacitor), form energy recovery circuit, thus the electric weight that consumes can reduce panel driving the time.
At this moment, in order to reduce the quantity of the element of forming energy recovery circuit, control above-mentioned scanning (scan) electrode and keep the energy recovery of (sustain) electrode and the switch (ER) that provides can be shared one.
At this moment, to scanning (scan) drive division when keeping any one drive division in (sustain) drive division and carry out the control signal transmission, if produce mistake, so, hard switching (hard switching) phenomenon may take place in the drive division of transmission of control signals.
Therefore, as with reference to figure 7 and explanation that Fig. 8 did, to scanning (scan) drive division during with the some control part transmission of control signals kept in (sustain) drive division, if produce mistake, then stop the transmission of other control signals, thereby can prevent the loop damage that above-mentioned hard switching (hard switching) phenomenon causes.
In sum; though the present invention about plasma display system with preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; can carry out various changes and modification, so protection scope of the present invention is as the criterion when looking the claim restricted portion that is proposed.
Claims (6)
1, a kind of plasma display system, it comprises and possesses a plurality of scan electrodes that form on the upper substrate and keep electrode, with the Plasmia indicating panel of a plurality of keeper electrodes that form on the lower basal plate; Reach the drive division that drive signal is provided to above-mentioned a plurality of electrodes, it is characterized in that: above-mentioned drive division comprises the 1st drive division that drive signal is provided to above-mentioned scan electrode, to above-mentioned a plurality of the 2nd drive divisions that electrode provides drive signal of keeping; Generate the control signal of the work of above-mentioned the 1st, 2 drive division of control, and transfer to the drive control part of above-mentioned the 1st, 2 drive division; Above-mentioned drive control part if produce mistake, then can stop to above-mentioned the 2nd drive division transmission of control signals to above-mentioned the 1st drive division transmission of control signals the time.
2, plasma display system according to claim 1, it is characterized in that: above-mentioned drive control part comprises preservation to the 1st impact damper of the control signal of above-mentioned the 1st drive division output and preserve the 2nd impact damper to the control signal of above-mentioned the 2nd drive division output, and above-mentioned the 2nd impact damper is connected with above-mentioned the 1st drive division.
3, plasma display system according to claim 2 is characterized in that: it also comprise with above-mentioned the 2nd impact damper and above-mentioned the 1st drive division between connecting line pull-up resistor in parallel.
4, plasma display system according to claim 2 is characterized in that: an end ground connection of the connecting line between above-mentioned the 2nd impact damper and above-mentioned the 1st drive division.
5, plasma display system according to claim 1 is characterized in that: when above-mentioned the 1st impact damper is not connected with above-mentioned the 1st drive division, the buffer control signal to above-mentioned the 2nd impact damper input will possess high-grade voltage.
6, plasma display system according to claim 1 is characterized in that: above-mentioned the 1st, 2 drive division, the energy recovery of the above-mentioned panel of shared control and the switch that provides.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070114276 | 2007-11-09 | ||
| KR1020070114276A KR20090048070A (en) | 2007-11-09 | 2007-11-09 | Plasma display device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101404138A true CN101404138A (en) | 2009-04-08 |
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ID=40538135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102110208A Pending CN101404138A (en) | 2007-11-09 | 2008-08-15 | Plasma display device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20090048070A (en) |
| CN (1) | CN101404138A (en) |
-
2007
- 2007-11-09 KR KR1020070114276A patent/KR20090048070A/en not_active Application Discontinuation
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2008
- 2008-08-15 CN CNA2008102110208A patent/CN101404138A/en active Pending
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| KR20090048070A (en) | 2009-05-13 |
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