WO2007063604A1 - プラズマディスプレイパネル及びプラズマディスプレイ装置 - Google Patents
プラズマディスプレイパネル及びプラズマディスプレイ装置 Download PDFInfo
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- WO2007063604A1 WO2007063604A1 PCT/JP2005/022211 JP2005022211W WO2007063604A1 WO 2007063604 A1 WO2007063604 A1 WO 2007063604A1 JP 2005022211 W JP2005022211 W JP 2005022211W WO 2007063604 A1 WO2007063604 A1 WO 2007063604A1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/20—Constructional details
- H01J11/22—Electrodes, e.g. special shape, material or configuration
- H01J11/30—Floating electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
- H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
- H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
- H01J2211/20—Constructional details
- H01J2211/22—Electrodes
- H01J2211/32—Disposition of the electrodes
- H01J2211/323—Mutual disposition of electrodes
Definitions
- the present invention relates to the technology of a plasma display panel (PDP) and a plasma display device (PDP device), and more particularly to the structure of a PDP display drive and electrodes.
- PDP plasma display panel
- PDP device plasma display device
- the first substrate front substrate
- the second substrate rear substrate
- third (A) electrodes that serve as address electrodes.
- a Z (fourth) electrode is further provided between the X and Y electrodes, and trigger discharge is performed between the Z electrode and the X or Y electrode.
- Patent Document 1 Japanese Patent Laid-Open No. 11-238462
- Patent Document 1 describes an example in which a float electrode (island conductor) is provided on a substrate as an electrode structure of a display cell. .
- Patent Document 1 Japanese Patent Laid-Open No. 11-238462 (FIGS. 3 and 4)
- the long gap discharge in the display cell has high luminous efficiency but high discharge start voltage.
- a trigger discharge is applied in which a voltage is applied to the Z electrode between the display electrodes and the voltage is reduced to 0 immediately after the discharge starts.
- Patent Document 1 In the technique disclosed in Japanese Patent Application Laid-Open No. 11-238462 (Patent Document 1), a discharge corresponding to a trigger discharge is generated at the float-like electrode, but the discharge gap cap between the float-like electrodes is generated.
- the structure is the same as the gap between the display electrodes (main discharge gap). With this structure Since the main discharge sustain voltage does not decrease so much, the improvement in luminous efficiency is small.
- the present invention has been made in view of the above problems, and an object of the present invention is to generate a stable trigger discharge with low power consumption in a PDP using a float electrode in the technology of a PDP device. And providing a structure with high luminous efficiency.
- the present invention comprises a PDP and its drive circuit, and uses a subfield method to cause a sustain discharge (repetitive discharge) between the XY electrodes of each display cell of the PDP.
- This is a technology of an AC type color PDP device that performs display by using a float electrode on the PDP and having the following structure.
- the PDP panel consists of multiple display cells arranged in a matrix of the first (horizontal) direction and the second (vertical) direction, and the vertical direction is the third direction.
- a pair of float electrodes capacitively coupled with a pair of electrodes for main discharge is formed in the vicinity of the main discharge gap.
- the main discharge gap (first gap) and the trigger discharge gap (second gap) can be designed independently and the intensity of the trigger discharge can be arbitrarily designed according to the shape and arrangement of the float electrode.
- the float electrode surface is arranged so as to partially overlap the display electrode surface forming the first gap and protrude above the first gap when viewed from the display surface.
- the first and second electrodes that are a pair of electrodes for main discharge are capacitively coupled.
- a second float electrode is provided, and a minute trigger discharge is generated between the first and second float electrodes by applying a voltage pulse between the i-th electrode and the second electrode from the drive circuit.
- the main discharge develops between the first and second display electrodes. Due to the capacitive coupling between the display electrode and the float electrode, the electric field weakens due to wall charges due to discharge (trigger discharge), and automatically ends with a short discharge. When the trigger discharge occurs, a long gap discharge between the display electrodes occurs, thereby improving the light emission efficiency.
- This PDP has, for example, first (X), second (Y), and third (A) electrodes in a dielectric layer.
- Each of the display cells including the first, second, and third electrodes has the following structure.
- the first electrode and the second electrode, particularly the display electrode extend in the first direction and the edges thereof face each other in the second direction to form a first gap (long gap) for the first discharge.
- the fourth electrode referred to as the first (X) float electrode
- the fifth electrode referred to as the second (Y) float electrode
- It has two island-shaped electrodes.
- the first and second float electrodes are provided at a position slightly apart in the third direction in a region near the first gap and the display electrode.
- the first float electrode and the second float electrode face each other to form a second gap (short gap).
- the first and second float electrodes have a surface area (second area) partially overlapping with the first and second electrodes (display electrodes) when viewed on the display surface, and a surface area (first area) that does not overlap.
- the second region is capacitively coupled with the first and second electrodes (display electrodes) with a capacitance (Cf).
- the distance (Lz) between the edges of the second gap between the first and second float electrodes is smaller than the distance (Lg) between the edges of the first gap between the first and second electrodes (display electrodes). Lg). That is, the float electrode protrudes on the first gear with a surface area (first area) that does not overlap the display electrode surface.
- the first discharge (trigger discharge) is generated in the (second gap), the first discharge is terminated, and the second discharge (the first gap) having a higher intensity is generated between the first and second electrodes (first gap).
- Main discharge As a result, the target display cell emits light.
- the sustain pulse described above is a pulse including repetition of positive and negative pulses having opposite polarities in X and Y by the sustain voltage Vs.
- the intensity of the first discharge is 1/5 or less of the intensity of the second discharge, depending on the shape, arrangement, and material of the dielectric layer and the electrode group, or the first The discharge current is less than 1/5 of the second discharge current.
- the PDP is the same as the above (1), and the definition according to the intensity or current of the discharge is as follows.
- the coupling capacitance (Cf) between the first and second electrodes (display electrode) and the float electrode in the display cell is the first and second electrodes (display electrodes) where the second discharge occurs.
- the discharge insulation layer capacity (Cdm) is 1/5 or less.
- the areas of the first and second float electrodes on the display surface include portions that are capacitively coupled. It is characterized by being smaller than the area of the electrode (display electrode).
- the design of the electrode area is effective as it is when the shape of the electrode surface is a relatively simple rectangle or the like.
- the shape is complicated, for example, the above-described design of the float electrode is performed.
- the design is made in consideration of the first region, the second region, and the connection portion (third region) between the first region and the second region.
- the width (Wf) in the first direction of the first and second float electrodes in the display cell varies depending on the position in the second direction. However, it is characterized by being small near the edge of the first gap between the first and second electrodes (display electrodes).
- the first and second float electrodes serve as a connection portion between the first region on the first gap, the second region on the display electrode, and the first region and the second region, And a third region including a portion that becomes smaller near the edge of the first gap.
- the width (Wf) in the first direction of the first and second float electrodes in the display cell varies depending on the position in the second direction. On the display surface.
- the first gap between the two electrodes is characterized in that there is no portion where the edge of the first and second float electrodes overlaps (they are covered or not).
- the float electrode has a shape having a first region on the first gap, a second region on the display electrode, and a third region at a position not passing through the edge of the first gap.
- the edge of the second gap between the float electrodes has a shape extending in the first direction (facing in the second direction), like the first gap.
- the edge of the second gap may have a shape extending in the second direction on the first gap (facing in the first direction).
- the first substrate side and the second substrate side are combined through a discharge space and a partition wall.
- the first substrate has a plurality of pairs of a first (X) electrode and a second (Y) electrode, which are electrodes for sustain discharge, extending in the first direction, approximately parallel to each other.
- the first and second electrode groups are covered with a dielectric layer (insulating layer).
- Second board Each has a plurality of third (A) electrodes, which are address electrodes, extending substantially in parallel so as to extend in the second direction.
- the first substrate and the second substrate are separated by, for example, a partition extending in the second direction, have phosphor layers of each color, and a display cell is configured by the first, second, and third electrodes.
- Each display cell including a region where the first electrode and the second electrode face each other has the following structure.
- the first and second electrodes are transparent first and second bus electrodes electrically connected to the first and second bus electrodes, and the first and second bus electrodes made of a linear metal connected to the drive circuit side.
- the display electrode has a surface area protruding from the bus electrode to the inside of the display cell.
- a first float electrode capacitively coupled to the first display electrode and a second float electrode capacitively coupled to the second display electrode are provided.
- each electrode corresponding to the capacitive coupling are configured so that the intensity of the first discharge is 1/5 or less of the intensity of the second discharge.
- the PDP device includes any one of the above PDPs (1) to (6) and each drive circuit that applies a voltage to the first, second, and third electrodes of the PDP. .
- This PDP device automatically generates a trigger discharge between the float electrodes by applying a voltage from the drive circuit side to the first and second electrodes of the PDP during the sustain period, and the main discharge between the display electrodes. To move to.
- the invention's effect is any one of the above PDPs (1) to (6) and each drive circuit that applies a voltage to the first, second, and third electrodes of the PDP. .
- a PDP using a float electrode can generate a stable trigger discharge with low power consumption and provide a structure with good light emission efficiency.
- FIG. 1 is a diagram showing an overall configuration of a PDP device according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view showing the structure of a pixel unit of a PDP in the PDP device according to one embodiment of the present invention.
- FIG. 3 is a plan view showing an electrode structure of a display cell in the PDP device according to the first embodiment of the present invention.
- FIG. 4 is a cross-sectional view showing the structure of a display cell in the PDP device according to the first embodiment of the present invention.
- FIG. 5 is an explanatory diagram showing capacities of display cells in the PDP device according to the first embodiment of the present invention.
- FIG. 6 is a plan view showing an electrode structure of a display cell in the PDP device according to the second embodiment of the present invention.
- FIG. 7 is a plan view showing an electrode structure of a display cell in a PDP device according to a third embodiment of the present invention.
- FIG. 8 is a plan view showing an electrode structure of a display cell in the PDP device that is Embodiment 4 of the present invention.
- a float electrode for trigger discharge is provided, and a trigger discharge gap ( Lz) is made smaller than the main discharge gap (Lg) between the display electrodes, and the insulating layer thickness (W2) related to the trigger discharge is designed to be smaller than the insulating layer thickness (W1) related to the main discharge.
- discharge trigger discharge
- the capacity (Cf) between the float electrode and the display electrode should be at least 1/5 less than the main discharge film capacity (Cdm) so that the trigger discharge is less intense than the main discharge.
- FIG. 1 shows an overall configuration of a PDP device 100 including a drive circuit 30 for the PDP 40.
- FIG. 2 shows a configuration example of the PD P40 in units of pixels.
- 3 to 5 show the structure of 10 display cells in the PDP device 100 of the first embodiment.
- the structure of electrodes and the like in each display cell of PDP 40 is designed.
- the design of the float electrodes (51c, 52c) with respect to the display electrodes (51b, 52b) in the dielectric layer 43 is a feature.
- the PDP device 100 includes a PDP 40 that is a display panel, a drive circuit 30, a control circuit 20, a power circuit 80, and the like.
- a drive circuit 30 is connected to the PDP 40, and a control circuit 20 is connected to the drive circuit 30.
- the control circuit 20 and the like are also called the drive circuit 30.
- the power supply circuit 80 supplies voltages necessary for driving and control, such as a sustain voltage Vs and an address voltage Va, to the control circuit 20 and the like.
- the PDP device 100 for example, an IC or power supply circuit unit in which a PDP40 back surface is bonded to a chassis unit (not shown) and each circuit unit such as the control circuit 20 is mounted on the chassis unit back side. Etc. have a PDP module.
- the circuit part on the rear side of the chassis part and the end part of the electrode of the PDP 40 are connected by a driver module corresponding to the drive circuit 30.
- PDP module power configured as described above is housed in an external housing to form a PDP device set.
- the control circuit 20 forms a control signal for controlling the drive circuit 30 based on the input display signal (D), interface signal, and the like, thereby controlling the drive circuit 30.
- the control circuit 20 includes a display data control unit that controls supply of display data to the drive circuit 30, a timing control unit that generates a timing signal for controlling display processing timing, and supplies the timing signal to the drive circuit 30.
- the control circuit 20 generates display data for processing the display signal (D) and supplying it to the PDP 40, stores it in the memory of the display data control unit, and based on the display data, the address circuit 33, etc. To control.
- the drive circuit 30 includes an X drive circuit 31, a Y drive circuit 32, and an address circuit 33.
- the electrode group of the PDP 40 is driven in accordance with a control signal from the control circuit 20.
- X drive The dynamic circuit 31 drives the X electrode of the PDP 40.
- the Y drive circuit 32 drives the Y electrode of the PDP40.
- the Y drive circuit 32 includes a scanning drive circuit (scan driver), which drives the Y electrode that becomes the scanning electrode.
- the address circuit 33 drives the address (A) electrode of the PDP 40 based on the display data signal.
- the display cell 10 is formed by each region where the A, X, and Y electrodes intersect.
- the PDP 40 is mainly composed of a substrate mainly composed of two glasses, a front substrate 41 and a back substrate 42.
- the PDP 40 is bonded so that the front substrate 41 side and the rear substrate 42 side face each other via the partition wall 48 or the like, and exhaust and discharge gas are sealed and sealed in the space between them (which becomes the discharge space 47). It is constituted by.
- a plurality of sets of first (X) electrodes and second (Y) electrodes are provided substantially in parallel in the first direction.
- the X and Y electrodes become sustain electrodes where sustain discharge is performed.
- the Y electrode also serves as the scan electrode.
- the X and Y electrodes on the front substrate 41 are covered with a dielectric layer (also referred to as an insulating layer) 43 and a protective layer 44.
- a plurality of address electrodes 53 as third (A) electrodes are arranged substantially in parallel in a second direction orthogonal to the first direction in which the X and Y electrodes extend.
- the address electrode 53 has a substantially linear shape made of metal and is covered with a dielectric layer 45.
- a plurality of partition walls 48 are formed for forming regions divided into stripes in the second direction.
- the display cell 10 is formed including the region that is divided by the partition wall 48 and intersects with each electrode.
- the regions separated by the barrier ribs 48 include phosphor layers of R (red), G (green), and B (blue) colors on the dielectric layer 45 and the side surfaces of the barrier rib 48 ⁇ 46r, 46g, 46b ⁇ Are applied separately.
- a pixel is composed of a set of display cells 10 of R, G, and B.
- the display cell 10 has a shape that is long in the second direction, and becomes a pixel having a shape close to a square by the set of the R, G, and B display cells 10. Note that a form of a box-type display cell 10 in which a partition is also provided in the first direction is also possible.
- each X and Y electrode is constituted by a bus electrode and a display electrode (also referred to as a discharge electrode or a transparent electrode) in this example, and further has a float electrode.
- the bus electrode is a metal linear bar-shaped electrode that is electrically connected to the drive circuit 30 side.
- the display electrode is electrically connected to the bus electrode to form a main discharge gap It is a transparent electrode made of IT ⁇ (indium tin oxide) layer film.
- the float electrode is an independent transparent electrode in the dielectric layer 43.
- the float electrode can be made of metal. Let the float electrodes corresponding to the X and ⁇ electrodes be the X float electrode 51c and the Y float electrode 52c, respectively.
- the X display electrode 51b and the Y display electrode 52b are formed on the front substrate 41 in the third direction, and the X bus electrode 51a and the Y bus electrode 52a are formed thereon. Yes. Furthermore, an X float electrode 51c and a Y float electrode 52c are formed a little further apart.
- the X electrode is a set of an X bus electrode 51a, an X display electrode 51b, and an X float electrode 51c. The same applies to the Y electrode.
- the dielectric layer 43 is composed of two layers of a first dielectric layer 43-1 and a second dielectric layer 42-2 corresponding to the formation of the float electrode.
- the dielectric layer 43 and the dielectric layer 45 are made of SiO or the like.
- the protective layer 44 is made of MgO or the like.
- a driving method of the PDP 40 in the PDP device 100 uses a subfield method.
- One field (for example, 16.7 ms) corresponding to one display screen of the PDP 40 is composed of a plurality of time-division subfields (SF), SF1 to SFn (n is, for example, 10).
- SF time-division subfields
- SF1 to SFn n is, for example, 10
- Each SF has a reset period (Tr), address period (Ta), and sustain period (Ts) in order.
- Each SF is weighted according to the sustain period (Ts), that is, the difference in the number of sustain discharges, and gradation display is performed on each display cell 10 by the combination pattern of these SF lighting Z non-lighting.
- the remaining charge is made uniform as the reset operation of the reset period (Tr), and then the address circuit 33 and Y are used as the address operation of the address period (Ta).
- the drive circuit 32 application of an address pulse and a scan pulse
- discharge between the A and Y electrodes is performed, whereby data memory in the display cell 10 to be lit is performed.
- the sustain drive repetition discharge
- the sustain drive is performed between the X and Y electrodes by the drive from the X drive circuit 31 and the Y drive circuit 32 (the sustain pulse of the sustain pulse).
- Discharge light emission occurs in the target display cell 10.
- This PDP device 100 is based on the conventional PDP technology that supports three electrodes (X, ⁇ , A), surface discharge (X-Y discharge), and color (R, G, B).
- X, ⁇ , A three electrodes
- X-Y discharge surface discharge
- R, G, B color
- FIGS. 3 and 4 the structure on the front substrate 41 side which is the display surface side of the PDP 40 is manufactured.
- FIG. 3 shows an electrode structure in a surface area corresponding to the display cell 10 as viewed from the third direction on the display plane side of the PDP 40. In this area, the positions of the partition walls 48 and the address electrodes 53 are omitted.
- FIG. 4 shows a layer structure of a partial region corresponding to the display cell 10 as seen in a cross section in the third direction of the PDP 40 corresponding to FIG.
- the front substrate 41, the rear substrate 42, the discharge space 47, and the like are not shown because they are longer in the third direction than the dielectric layer 43 and the like.
- float electrodes (51c, 52c) are provided at positions partially overlapping the display electrodes (51b, 52b).
- the gap (Lz) between the float electrodes (51c, 52c) is shorter than the gap (Lg) between the display electrodes (51b, 52b).
- float electrodes (51c, 52c) are provided in the dielectric layer 43 on the front substrate 41 side.
- the region corresponding to the display cell 10 has a symmetric structure on the X side and the Y side with respect to the center of each discharge gap.
- the X, Y display electrodes (51b, 52b) that form the long gap (Lg), which is the first gap, on the front substrate 41 (rear side), Y bus electrodes (51a, 52a) are formed.
- transparent island-shaped X, ⁇ float electrodes (51c , 52c) transparent island-shaped X, ⁇ float electrodes (51c , 52c).
- the X and Y float electrodes (51c and 52c) overlap the corresponding X and Y display electrodes (51b and 52b) with the width Lf in the first direction, and between the X and Y float electrodes (51c and 52c).
- a second gap (Lz) is formed.
- the second gap (Lz) is shorter than the first gap (Lg).
- the second dielectric layer 43_2 and the protective layer 44 force for example, about 0.7 xm are deposited on the entire surface, and the address electrode 53, the partition wall 48, and each phosphor layer ⁇ 46r, 46g, 46b ⁇ are formed. Combined with the rear substrate 42 side. Then, sealing, exhaust, discharge gas sealing, etc. in the combined substrate and discharge space 47 are performed, and PDP40 force S is completed.
- the X and Y electrodes that is, the X and Y bus electrodes (X and Y bus electrodes (A sustaining voltage pulse (sustain pulse) is applied to 51a, 52a).
- the sustain pulse mainly consists of the repetition force of positive and negative pulses by the sustain voltage Vs.
- Wf is the width in the first direction of the float electrodes (51 c, 52c).
- Wb is the width of the display electrode (51b, 52b) in the first direction.
- Lg is the gap between the display electrodes, and is the distance between the edges of the display electrodes (51b, 52b) facing in the second direction.
- Lz is the gap between the float electrodes, and is the distance between the edges of the float electrodes (51c, 52c) facing in the second direction.
- Lf is the overlapping width of the display electrodes (51b, 52b) and the float electrodes (51c, 52c) in the second direction.
- Ls is the display discharge width, and the length (Lb) of the region protruding in the second direction from the bus electrode (51a, 52a) force in the display electrode (51b, 52b) is the float electrode (51 c , 52c), excluding the overlap width (Lf).
- Lb is the length of the display electrode (51b, 52b) in the second direction (length of the protruding portion from the bus electrode).
- Lc is the length of the float electrodes (51c, 52c) in the second direction.
- W1 is the thickness of the first dielectric layer 43-1 (first insulating layer)
- W2 is the combined layer of the second dielectric layer 43-2 and the protective layer 44 (second layer). The thickness of the insulating layer.
- the area (Lc X Wf) of the float electrode (51c, 52c) is smaller than the area (Lb X Wb) of the display electrode (51b, 52b), respectively.
- the area of the float electrode (51c, 52c) that overlaps the display electrode (51b, 52b) (Lf X Wb) is smaller than the area of the part that does not overlap.
- the thickness of the display electrode (51b, 52b) and the float electrode (51c, 52c) are almost the same and smaller than the thickness of the insulating layer (Wl, W2)
- FIG. 5 is an explanatory diagram showing each capacity corresponding to the definition.
- the dielectric constant is represented by ⁇ .
- it is considered as one insulating layer (second insulating layer) including the second dielectric layer 43-2 and the protective layer 44.
- the second insulating layer is a layer composed only of MgO. And provisional And calculate.
- Co is the capacitance between the X and Y electrodes, that is, the capacitance when it is assumed that there is no float electrode with only the front substrate 41 and the dielectric layer 43, and mainly the area of the X and Y electrodes.
- Cf is the trigger discharge capacity, that is, the capacity at the capacitive coupling between the display electrode and the float electrode, and the overlapping area ( ⁇ LfXWb) of the display electrode and the float electrode and the first insulation It is proportional to ⁇ of the layer and inversely proportional to the thickness (W1) of the first insulating layer.
- Cz is the capacitance between the float electrodes, that is, the capacitance when it is assumed that there is no X, Y display electrode (5 lb, 52b) between the float electrodes (51c, 52c).
- Cdm is the main discharge film capacity (discharge insulating layer capacity), that is, the portion of the display electrode (51b, 52b) not covered with the float electrode (51c, 52c) (main discharge area) ) (Capacity of discharge surface film), which is proportional to the main discharge area (Ls X Wb) and ⁇ of dielectric layer 43 (first and second insulating layers), and its thickness (W1 + W2) Inversely proportional to
- Cdf is the float electrode film capacitance, which is proportional to the area (LcX Wf) of the float electrode (51c, 52c) and ⁇ of the second insulating layer, and inversely proportional to its thickness (W2) .
- the applied voltage between the ⁇ and ⁇ electrodes is a sustain voltage Vs.
- the voltage between the float electrodes (51c, 52c) (the voltage at which discharge starts between the float electrodes) is defined as the float electrode voltage Vz.
- the trigger discharge By the trigger discharge, a long gap discharge in the first gap (Lg) between the display electrodes (51b, 52b) is generated as a main discharge at a lower voltage. Therefore, in the display cell 10, the discharge has a low space charge density, and the ultraviolet light emission efficiency is improved, that is, the visible light emission efficiency from the phosphor layer 46 is improved.
- the trigger discharge intensity needs to be smaller than the main discharge intensity, and is preferably at least 1/5 or less.
- the shape and arrangement of the display electrodes (51b, 52b) and the float electrodes (51c, 52c) of the PDP 40 are designed to satisfy the above conditions.
- the display electrodes (51b, 52b) and the float electrodes (51c, 52c) overlap each other on the display surface, and the float electrode (51c , 52c)
- the edge protrudes inward to form a short gap (Lz) between the float electrodes (51c, 52c) and the capacitances (Cdm, Cf) associated with the display electrodes (51b, 52b) and the float electrodes (51c, 52c).
- Lz short gap
- Cdm, Cf capacitances
- the ratio of capacitance Cf (Cdm: Cf) is given by the following formula (2).
- the first dielectric layer 43-1 has a low ⁇ thickness (W1) and a thin thickness (W1), but still there is no trigger discharge (conventional PDP).
- the sustain voltage of (discharge at Lg) is a high voltage of 200 V or more, and as a result, the discharge peak current is high and the luminous efficiency is lowered.
- a trigger discharge by the float electrode (51c, 52c) this PDP40
- a sustain discharge occurs at about 180V in the long gap (Lg)
- the discharge current 'strength is lower than before.
- the luminous efficiency can be improved by about 10%.
- the float electrode film capacity Cdf is 5 times larger than the main discharge film capacity Cdm, but the discharge current is about 1/6. Therefore, even if the second insulating layer is composed only of MgO, the MgO Notta (ion collisions in the discharge space 47) is reduced.
- the force S when the second insulating layer is made of only MgO the configuration in which a plurality of layers having different properties are provided in the second insulating layer region of the dielectric layer 43 region, for example, thin glass
- a structure of a composite film of MgO and a film of Mg, a structure without the protective layer 44, or a structure with only the protective layer 44 is also possible.
- the float electrodes (51c, 52c) serving as trigger electrodes are capacitively coupled to the display electrodes (51b, 52b) for main discharge by Cf, No special voltage pulse (trigger pulse to the Z electrode in the conventional four-electrode PDP device) is used to generate the discharge.
- the main discharge intensity and the trigger discharge intensity can be designed independently, and a weak trigger discharge with a short gap (Lz) can be generated at a low voltage.
- a main discharge with a long gap (Lg) is generated at a low voltage. Therefore, the light emission efficiency in the display cell 10 is high. Since this PDP device 100 can perform display with high luminous efficiency, it is possible to improve display brightness / contrast and reduce power consumption.
- each float electrode (51d, 52d) This is a shape in which the area applied to the opposing edge portion of the indicating electrode (5 lb, 52b) is reduced. That is, the float electrodes (51d, 52d) form a trigger discharge gap (Lz) and do not overlap the display electrode (51b, 52b) surface (first region), and the display electrode (51b, 52b) surface. A part that overlaps and capacitively couples to the surface (second region) and the first and second regions are connected to each other via the opposing edge (edge of the main discharge gap (Lg)) of the display electrodes (51b, 52b) (Third region).
- the display electrodes (51b, 52b) and the float electrodes (51d, 52d) of the PDP 40 are aligned in patterning compared to the first embodiment.
- the variation of the capacitance Cf due to accuracy can be reduced, and the device can be manufactured easily. That is, in the case of the second embodiment, even if there is a slight deviation in the alignment of the patterning, the area of the first region that mainly contributes to the trigger discharge in the float electrodes (51d, 52d) does not change substantially. Thereby, the above effect and stable discharge can be expected.
- each float electrode (51e, 52e) has a shape that eliminates the area of the opposing edge portion of the display electrode (5 lb, 52b). That is, the float electrodes (51e, 52e) form a trigger discharge gap (Lz) and do not overlap the display electrode (51b, 52b) surface (first region), and the display electrode (51b, 52b) surface.
- the surface portion (second region) overlapping and capacitively coupled to the first and second regions is connected to the side of the display electrode (51b, 52b) without passing through the opposing edge of the display electrode (51b, 52b). It is a shape having a portion (third region) that passes through a region (region adjacent to the first direction) extending in the second direction.
- the display electrode (51b, 52b) and the float electrode (51e, 52e) are more resistant to the patterning misalignment, and the display surface is also improved.
- the float electrodes (51e, 52e) are not applied near the edge of the main discharge gap (Lg) (there is no overlapping surface), stable discharge can be performed at low voltage.
- each float electrode (51f, 52f) displays A shape that eliminates the area of the opposing edges of the electrodes (51b, 52b) and that the edges that form the trigger discharge gap (Lz) extend in the second direction and face in the first direction It is.
- the float electrode (51f, 52f) forms a trigger discharge gap (Lz) and does not overlap the display electrode (51b, 52b) surface (first region), and the display electrode (51b, 52b)
- a surface portion (second region) that overlaps the surface and is capacitively coupled to the first and second regions is connected to the side of the display electrode (51b, 52b) without passing through the opposing edge of the display electrode (51b, 52b). It has a shape that has a part (third region) that goes through the region. As a result, the same effect as in the third embodiment is obtained.
- the present invention can be used for a display device such as a PDP device.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Gas-Filled Discharge Tubes (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/022211 WO2007063604A1 (ja) | 2005-12-02 | 2005-12-02 | プラズマディスプレイパネル及びプラズマディスプレイ装置 |
US12/083,778 US20090231309A1 (en) | 2005-12-02 | 2005-12-02 | Plasma Display Panel and Plasma Display Device |
CN200580051885.7A CN101297388A (zh) | 2005-12-02 | 2005-12-02 | 等离子体显示面板以及等离子体显示装置 |
JP2007547831A JPWO2007063604A1 (ja) | 2005-12-02 | 2005-12-02 | プラズマディスプレイパネル及びプラズマディスプレイ装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/022211 WO2007063604A1 (ja) | 2005-12-02 | 2005-12-02 | プラズマディスプレイパネル及びプラズマディスプレイ装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007063604A1 true WO2007063604A1 (ja) | 2007-06-07 |
Family
ID=38091945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/022211 WO2007063604A1 (ja) | 2005-12-02 | 2005-12-02 | プラズマディスプレイパネル及びプラズマディスプレイ装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090231309A1 (ja) |
JP (1) | JPWO2007063604A1 (ja) |
CN (1) | CN101297388A (ja) |
WO (1) | WO2007063604A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011007777A (ja) * | 2009-05-28 | 2011-01-13 | Canon Anelva Corp | 冷陰極電離真空計、放電開始補助電極及び真空処理装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11238462A (ja) * | 1998-02-20 | 1999-08-31 | Fujitsu Ltd | プラズマディスプレイパネル |
JP2002075215A (ja) * | 2000-07-21 | 2002-03-15 | Lg Electronics Inc | プラズマディスプレーパネル |
JP2004296451A (ja) * | 2000-01-25 | 2004-10-21 | Lg Electronics Inc | プラズマディスプレーパネル |
JP2005310576A (ja) * | 2004-04-22 | 2005-11-04 | Matsushita Electric Ind Co Ltd | プラズマディスプレイパネル |
-
2005
- 2005-12-02 WO PCT/JP2005/022211 patent/WO2007063604A1/ja active Application Filing
- 2005-12-02 JP JP2007547831A patent/JPWO2007063604A1/ja active Pending
- 2005-12-02 US US12/083,778 patent/US20090231309A1/en not_active Abandoned
- 2005-12-02 CN CN200580051885.7A patent/CN101297388A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11238462A (ja) * | 1998-02-20 | 1999-08-31 | Fujitsu Ltd | プラズマディスプレイパネル |
JP2004296451A (ja) * | 2000-01-25 | 2004-10-21 | Lg Electronics Inc | プラズマディスプレーパネル |
JP2002075215A (ja) * | 2000-07-21 | 2002-03-15 | Lg Electronics Inc | プラズマディスプレーパネル |
JP2005310576A (ja) * | 2004-04-22 | 2005-11-04 | Matsushita Electric Ind Co Ltd | プラズマディスプレイパネル |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011007777A (ja) * | 2009-05-28 | 2011-01-13 | Canon Anelva Corp | 冷陰極電離真空計、放電開始補助電極及び真空処理装置 |
Also Published As
Publication number | Publication date |
---|---|
US20090231309A1 (en) | 2009-09-17 |
CN101297388A (zh) | 2008-10-29 |
JPWO2007063604A1 (ja) | 2009-05-07 |
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