TW200428331A - Plasma display device provided with drive means suitable for carrying out rapid charge-equalization operations - Google Patents

Abstract

Conventionally, the drive means are suitable for generating charge-equalization or reset operations, then address operations and then sustain operations: the invention relates to division of the reset operations into two successive steps:.A metastable space charge-generation step P1;.An accelerated charge-generation end step P2 during which the system operates in the mode with weak discharges between the electrodes E1, E2, serving at least for addressing. Thanks to this division, the reset operations may be shortened and the luminous performance of the panel and/or the manufacturing yields of plasma panels may be improved.

Description

200428331 V. Description of the invention α) Technical field to which the invention belongs The present invention relates to a display device, including a plasma panel, AC type, having a memory effect, having intersecting electrodes, at least for addressing, and the device may be provided with a coplanar electrode as required, At least for continuous, and the drive mechanism of this panel is suitable for charge homogenization (or reset), addressing and continuous operation in the discharge area of this panel. The prior art AC plasma display panel (PD P) with memory effect generally includes two parallel plates, leaving space with discharge gas in between; among the plates, there are generally panels on the inner surface of these plates, such as several arrays Electrodes:-Generally two arrays of intersecting electrodes are placed on different boards, so they are not coplanar, and are used to address the discharge. At the intersection of the electrodes, in the space between the boards, define a photodischarge area, and at least two Arrays of parallel coplanar electrodes are placed on the same board for continuous discharge; these arrays are covered with a dielectric layer, which provides a memory effect in particular; the dielectric layer itself is covered with a protective and secondary electron emission layer, generally oxidized town. Each electrode of the continuous array, and the electrodes of other continuous arrays, form a pair of electrodes. A photodischarge area defining the succession therebetween is generally distributed along a row of discharge areas of the panel. The photodischarge area forms a two-dimensional matrix on the panel; each area emits light, so the matrix displays the image to be displayed. In general, one of the coplanar electrode arrays is used for both addressing and persistence. In this particular case, the electrode array may hereinafter be referred to as Y, while the

200428331 V. Description of the invention (2) The coplanar electrode is called X, and the addressing electrode array is orthogonal to Y and X and placed on another board 'is called A. Therefore, the electrode arrays X and Y are provided for the column discharge region 'and the electrode A array is used only for addressing, for the row discharge region. Adjacent discharge areas (at least those emitting different colors) are generally bounded by barrier ribs; these ribs are generally used as spacers between plates. The wall of the photodischarge area is generally coated with a filler sensitive to ultraviolet radiation from the photodischarge. Adjacent discharge areas have fillers that emit different primary colors. The way is that the combination of three adjacent areas forms an image element or pixel. In fact, the phosphorus covers the oblique walls of the ribs of the barrier ribs, and the plate supports these ribs. Generally, the plate supports an electrode array for addressing only; therefore, the address electrodes are covered with phosphorus. When the plasma panel is operated, in order to display the image, the discharge area matrix is used for continuous display or secondary display operations. Each secondary display operation includes the following steps: First, the selective addressing step is designed to modify the discharge areas to be activated. The electric power on the inner dielectric layer is based on applying at least one voltage pulse between the phase-parent address electrodes in these areas;-followed by a non-selective continuous step, during which a continuous voltage is applied between the continuous electrode pairs. Pulse wave in order to cause a continuous photodischarge only in the pre-discharged discharge area. '' After the sub-display operation, the discharge area can be in a very different internal voltage state, especially depending on whether these areas have been activated during this sub-display operation; other factors help to disperse the internal voltage state, such as equivalent The phosphorus properties in these regions and the dimensional characteristics of these discharge regions are inevitable

200428331 V. Description of the invention (3) The fluctuations and changes in the surface composition of the walls of these areas are related to the panel manufacturing method. In order to make all the discharge areas to be addressed have the same internal voltage-like cancer, most of the addressing steps are the homogenization steps of these areas first, the purpose is to reset all the discharge areas to be addressed to the same internal voltage state. Regardless of whether the pilot display operation has been performed or not; this resetting step should include a charge forming or priming operation, followed by a charge adjustment operation, also known as a charge erasing operation, and then, ideally, in each discharge area The internal voltage is close to the point threshold between the address electrodes and the continuous electrodes.

For discharge sites or continuous electrode pairs, the external voltage between these electrodes can be correlated with the internal electrodes in the gas space separating the material covered by these electrodes. The internal voltage is generally different from the external voltage because the surface charge on the surface of the insulating material covering the electrode is the interface between these dielectric materials and the gas in the discharge region. These surface charges are, on the one hand, due to the capacitive effect of the dielectric properties of the material defining the discharge region, and on the other hand are the results of the so-called "memory" charges generated by previous discharges in the gas in these discharge regions.

The internal point of the discharge area in the specified direction leads to the Pgen value, which is equivalent to the internal voltage limit value in this direction. If this gas is exceeded, the gas is ionized in this area. This value depends on the characteristics of the gas in this area, the characteristics of the materials in contact with the gas in this area, and the geometry of the electrodes that cross this area outside this area. In the special case of the above three array electrodes X, Y, A, there are generally six internal thresholds related to each discharge area:

Page 9 200428331 V. Description of the invention (4) Internal Proximity m 1 Ψ ^ 佶 Vit _ΧΥ Zaiyang | JX Li | Danger V 1 ΑΛ 1-^-* • " V-point reference ffl Internal threshold vIT _ΥΧ At the cathode, the point between X and anode Y refers to the internal threshold V, T _AXA J At the anode: point between x and cathode A refers to the internal threshold VIT _Αχ between the cathode, X and anode A refers to the 5 internal threshold Limit value Υ IT _ΥΑ Reference point J between anode 1 ^ and cathode A Internal threshold Vit _ΑΥ Reference point between cathode ^ and anode A 〇 Factory anode J and factory cathode J are discharged relative to the vicinity of the electrode passing through this area The internal electricity of the gas in the zone is J. If the potential in the nearby gas is greater than the other-electrode, the electrode is the anode and the other electrode is the cathode. Secondly, the two internal thresholds have the same value because they are characterized by coplanar mode discharge, which occurs when the same plates that are generally symmetrical with each other are charged; V1T _XY: two V IT oneΥ) Vn r_s * refers to March 〇 and Second—A different internal threshold value is characterized by matrix mode discharge, so the electrode system is considered as anode or cathode between different plates.

It depends. '’ILXA ^ VlT-YA, with IT_A_ca designating' IT_AX: V IT_AY’ with YlT_A_an to indicate that when the Gein row address electrode A is used as the cathode, secondary emission from the carried phosphorus occurs. There is less magnesium oxide than the surface of the dielectric covering the original electrode X or Y, that is, a higher voltage discharge occurs when it is used as the anode. '

Generally speaking: First, at the time of charge formation or priming operation, each electrode Y ', which is both addressing and continuous use, is anode relative to the other two electrodes X and A'; at the time of charge adjustment or erasing operation, and Addressing and ongoing

Page 10 200428331 Description of the invention (5)-Each electrode Y is a cathode with respect to iL ^, /, and two electrodes X and Δ. Seek for the benefit of the θ plane in the two matrix strips ^ The two planes are on the one side between the two continuous plane electrodes, and the other side. _ The enveloping electrodes are applied with a gradually increasing potential, so that all the electric areas to be addressed are Can be addressed; French Patent No. 2, 4 1 7, 848 (^ 〇1113〇11- 1 9 78) and US Patent No. 5,745, () No. 86 (1) 1 “111" 〇 1 1 9 9 8) ^ [儿It is indicated that when a constant voltage signal is applied to the [, or other electrodes with a track record, the address voltage and the continuous electrode are applied with a ramp voltage signal. ® π ί 国 ϊ ΐ 5: 745, _ indicates It is appropriate to repeat the panel area ^ ^ ^ ^ ^ 1 〇y /, S 3Γ / Λ π ^ ^ ^ ^. These "weak 丨 discharges + τ" have a series of "weak" discharge product surface discharge pairs between the poles Electricity:; === ;: The tank should be _ electricity, so the internal voltage in the gas in these areas ,; stay, etc.;: ;; slightly lower than the aforementioned internal point lead-in limit. Quanbaoyuan is equal to or slightly utilizes the known advantages of weak discharge reset (also known as "who ^ ww ^ is generated by generating weak light, and can be reset"). Accurate adjustment is performed later. Adjust the internal voltage. Radiation is the basis of the contrast performance of the display device. Z ”〃. Limits the production of this light in the discharge area + & 'two-view coverage of this area cathode; = 特 =; = The secondary material of the other materials is determined. The slope value used for t is not more than 5V / # S for the bottoming operation of the ^ electrode relative to χ and extremely yak. Because of the slope of 2 0 0V , So the bottoming operation period is tens of microseconds. This period will be described =

200428331 V. Description of the invention (6) Other operations performed in the sub-scan, that is, addressing and continuous operation, represent a waste of time, thus limiting the performance of the display device, especially regarding the maximum emission. In addition, at the end of the production line, some panels will be eliminated, because it is shown that the strong discharge with standard slope values in the base slope has a related operational flaw, further increasing the production cost of the panel. The purpose of the present invention is to limit these disadvantages. Another disadvantage of the present invention is that shortening the discharge area resetting operation will not reduce its efficiency, which means that the level of homogenization of various discharge areas is still maintained. To this end, the present invention is directed to a display device including:

— An AC plasma panel with a memory effect, including two plates with space to accommodate the discharge gas, and intersecting electrodes of the two arrays, at least for addressing. At the intersections, the space between the plates defines the photodischarge. Area;-a drive mechanism suitable for applying a voltage signal to the electrode and suitable for operation, aiming to homogenize or reset the charge in the discharge area; characterized in that the drive mechanism is designed in a group of discharge areas In the special reset operation, if each discharge area of the panel has an external matrix point threshold voltage (VET_E2E1) between at least the electrodes used for addressing and intersecting the area,

Let M i η [VET_E2E1] and Max [VET_E2E1] be the minimum and maximum values of the matrix point induced voltage (VET_E2E1) in the area of the group, then increase the potential difference VE2E1 at least for the addressing and interfacing electrodes in this area. In this reset operation, once VE2E1 exceeds 1.1 X Max [Vet_E2E1] 'referred to as the end of operation slope' ratio ~ E2E1 in Min [VeT_E2E1] and RRP 1 1 || | > IIH draw Hill III 1 iiii 1 Hi · Page 12 200428331 V. Description of the invention (7)

The moment between MaX [\ eT_E2E1] ’^ E2Ei ’s growth has a steeper slope. Therefore, the present invention corresponds to the first specific example, which will be described later. In accordance with the same principle, the subject of the present invention is also a display device, including: an AC plasma panel with a memory effect, including two plates, with space left between them to accommodate the discharge gas, and two arrays of intersecting electrodes, at least for addressing ' A photo-discharge area is defined in the space between the plates, at least two electrodes of the array are used for at least continuity, and one of the electrodes of each array is placed across each discharge area. A driving mechanism is suitable for Applying a voltage signal to the electrode is suitable for reset operation, and aims to homogenize or reset the charge in the discharge area.

It is characterized in that the design of the driving mechanism is in a special reset operation of a set of discharge areas. If each discharge area of the panel has at least an external matrix point threshold value between at least the area used for addressing and intersecting electrodes in the area Voltage (VET EA2EA1), let M in [VET-EA2EA1] and M a X [\ Ε__ΕΑ2ΕΑ1] be the minimum and maximum values of the matrix point induced voltage (vET_ EA2EA1) in the far group area respectively. If each discharge area of the panel, Between at least electrodes that are used to last and cross this area, have external coplanar limit voltages 'Let iMin [\ et_ES2esi] and Max [\' et_es2esi] be the minimum of the coplanar point induced voltage (VET_ES2ES1) of the group of areas, respectively Value and maximum,

One is not used at least for the potential difference VEA2EA1 applied between the electrodes addressed and transferred in this group, which does not exceed the value of M i η [VET_EA2EA1], and is used at least for the performance and the applied potential difference V ρ across the electrodes in this group. £ Ρςΐ ^ not exceeding the value of Max [\ et_es2esi] 'once applied to at least these electrodes

Page 13 200428331 V. Description of the invention (8) The potential difference VES2ES1 has exceeded the value of Max [VET_ES2ES1], that is, the rise is called the forward operation end slope, which is the potential difference applied between the electrodes that are used to address and transfer the area in this group at least 1 ^ £ A 2 E A1 'Once at least the voltage difference VES2ES1 applied between the electrodes used to maintain performance and cross the area has exceeded the value of Max [VET_ES2ES1], the rise is called the positive 4 end working slope.' Ves 2 E S1 In the instant between MΐΠ [1 / £ ES2ES1] and Ma X [V ET_ES2ES1] 'Y EA2EA1 grows steeper and steeper. -Therefore, the present invention corresponds to the second specific example described later, or the third specific example described later. ”In general, the drive mechanism is suitable for further:-selective addressing operation to selectively activate or deactivate the discharge area φ, applying a voltage pulse between at least electrodes used for addressing; Continuous operation, the discharge is only initiated in the pre-activated discharge area of the panel, which applies a voltage pulse between at least the electrodes used for the duration. These panels are said to have a "memory effect" because during the duration, _ A discharge occurs only in the previously activated area 5 To this end 'in each discharge area-domain, at least one electrode is coated with a continuous dielectric layer, which is itself covered with a protective and secondary electron emission layer. The dielectric layer has a memory effect. In continuous operation, the discharge can be initiated only in the active area; the protective layer is generally a magnesium oxide layer with a high secondary electron emission coefficient, which is more than covering at least one for addressing in each discharge area. The material of the Electrode® has a high secondary electron emission coefficient. This material is generally phosphorous. The drive mechanism is preferably designed to perform the homogenization or reset operation at this particular charge

Page 14 200428331 5. In the description of the invention (9), the electrodes covered with a protective layer are used as anodes in each area of the group; the special reset operation is the charge formation or priming operation; in this case, no The charge adjustment or erasing operation, in contrast, the electrode covering the protective layer generally serves as the cathode. Each reset operation is generally related to one or all of the discharge area rows of the panel; these operations are generally initiated before the selective addressing operation. "Dance array" refers to initiating a discharge between at least electrodes used for addressing, and "coplanar point induction" refers to initiating a discharge between at least electrodes that are used continuously. · If the panel includes an array of coplanar electrodes on the same board, these electrodes are used at least for sustaining; other boards generally have electrode arrays mainly used for addressing · or even another for continuous discharge; in this case, At least one array electrode for addressing, preferably combined with at least one continuous array electrode to form an array coplanar electrode; therefore, this array electrode is used as the anode during the priming operation. A conventional coplanar plasma panel is used. If the panel does not have a coplanar electrode array, it is generally used for addressing. A voltage pulse is applied between the electrodes for continuous operation. The panel generally has two arrays of ^ electrodes, each of which has an array; in the variant, continuous operation It can be performed by applying a radio frequency field in the discharge area_. In this case, the array electrode is only used for addressing. Because of the invention, the period required for resetting operation can be shortened, and the extra time and time are dedicated to continuous operation. Improve the luminous efficiency of the panel. Due to the invention, it is possible to implement improved plasma by reducing the amount of scrap

Page 15 200428331 V. Description of the invention (ίο) Panel productivity. Increasing the end-of-operation slope of at least the electrode-to-electrode difference used for addressing, preferably greater than 5V / // s. Therefore, once all the matrix point approach limits in the first specific example have been exceeded, and once all the coplanar point approach limits in the second or third specific example have been exceeded, the reset operation is much more advanced than the prior art Perform quickly, without losing the quality of these operations, and without the risk of a strong discharge that is detrimental to comparison; therefore, more time is available for other drive operations, especially continuous operation, which can improve display performance, especially in video images Display case.

Increasing the operation end slope of at least the potential difference between the electrodes for addressing is preferably greater than 10 V /// s. The device performance and advantages of the present invention can be further improved. Preferably, in the second or third specific example, during the reset operation, although ~ ES2ES1 is between Min [VET_ES2ES1] and Max [VET_ES2ES1], at least the potential difference VES2ES1 applied between electrodes increases, It is called that the operation start slope is greater than 5V /// S, and preferably greater than 10V // ZS. The performance and advantages of the device of the present invention are even further improved. In each of the special reset operations, at least the potential difference applied between the electrodes used for addressing (VE2ei; YeA2EA1) ’when Min 〔VET_E2E1] < YE2El < MaX 〔

Vet_e2ei] or Min [VET_EA2EA1] < \ ea2eai < Max [VET_EA2EA1] When the ‘reach is uniform and strictly rises. "Uniform and strictly rising" refers to a non-zero increase. The increase should be linear over time; therefore, a linear voltage ramp applied to an array electrode is achieved, which is easier to implement. In the second or third specific example, at the time of each of the special reset operations,

Page 16 200428331 V. Description of the invention (11) δ is leisurely connected to the thunderbolt. The thunderbolt difference Γ V …… ,, oneM; η Γ a 丨 * one /, · ★ 1, Ί ^ '^ ~ \ ^ V " Xl > 4-*-· --J' ί -V w -〇 > CC- v * \ L ^ > Z i ^ tn U 丄 丄,

VeT_ES2ES1] <~ ES2ES1 &lt; Max ['ET_ES2ES1]' ‘Yuan Hao is uniform and strictly rises. "Uniform and strictly rising" refers to a non-zero increase. This increase should be linear over time; therefore, a linear voltage ramp applied to an array electrode is implemented, which is a simpler implementation. The following is a summary of the principles on which the invention is implemented in the primer operation: • In order to obtain the weakest discharge mode between the two electrodes for addressing, E1 and E2, or EA1 and EA2, use E1 or EA1 As a cathode, the initial level for conditioning the discharge area is raised before a steep signal is applied between these electrodes. • So this invention is about two subsequent steps in the same reset operation ... Step P1, generating a metastable space charge obtained by using a discharge; Accelerating charge generation and ending step P 2 is equivalent to making all these charges the same. During this period, the system operating mode is at least between the electrodes E 1 and E 2 used for addressing, or between EA 1 and EA 2. The highest possible slope is generally greater than 10 V / # s. • The present invention can be applied to plasma panels with various unit cell or discharge area structures, such as ACM, ACC or ACC3E types. • In the first specific example, it can be applied to an ACM type matrix panel with two electrodes El and E2 per cell, or an ACC panel with three electrodes or more per cell (including EA1 and EA2). Step P1 includes applying The ramp with a gentle slope is enough to generate a discharge between the two electrodes E1 and E2 (or another EA1 and EA2), regardless of

Page 17 200428331 V. Description of the invention (12) ---- What was the state before the unit cell. The slope of this gentle slope is actually equivalent to the slope commonly used in prior art, that is, less than 10V / // s. The discharge occurred in EbΈ2 (or Eai in another case, EA2), which is also used to condition the unit cell, and between the electrode and E 2 (or another in EA 1 and EA 2), the part of the internal voltage of the unit cell is homogenized. In the second and third specific examples, it can be applied to an ACC type coplanar panel. Each unit cell includes at least three electrodes EA1, EA2 = ES2, ES1. Step p is included between the coplanar electrodes of the unit cell, and a slope is applied. Compared with the previous technology, it is a steep slope, generally greater than 10V / // s, ESI is used as the cathode, and the secondary emission coefficient of the covered material is greater than that covered by EA1, and ES2 can be EA2 (standard ACC situation: human EA1: OK, EA2 = ES2 = "Scan / Continuous" row, ESI: "Shared" row). The E S1-E S 2 coplanar discharges generated in this way are also used to condition the unit cell and to homogenize part of the internal electrodes between ESI and ES2. The second and third specific examples are as follows: knife. Second specific example: In step P1, no discharge occurs between E A 1 and E A 2, and the point-to-point voltage is not exceeded inside these electrodes. This can be achieved by various signals (certain signals, ramp signals or other signals) between Eai and EA2, as long as the point threshold is not exceeded. In this step P1, the weak coplanar discharge is induced to prevent the weak matrix discharge. The amplitude of the ramp signal applied by the matrix one by one does not exceed the matrix threshold voltage at any time. . Third 'Specific Example ... In step 1, a matrix discharge occurs between EA1 and EA2, and there is a coplanar discharge between ESI and ES2. In this case, the signal slope between EA1 and EA2 must be small in order to operate in the weak discharge mode until a sufficient level of the conditioning cell is reached. In this case, the signal slope between EA 1 and EA2 is smaller than between ESI and ES2.

Page 18 200428331 V. Description of the invention (13) • The boat scale P 9 is a sign of the night frog, the free force FA 1 knows F, A 9, and the technology of scabies bismuth is a high slope signal, generally greater than 10V / // s. What happens between other electrodes at this stage is less important. • Steps P1 and P2 may be separated for a period of time as required 'without any discharge in the unit cell (for example, the applied voltage temporarily stops increasing). During this period, it must not exceed 20 // s, so that the effect of conditioning in P1 will still be effective in P2. • The above specific examples are derived from these general principles and the conditions in the case where a discharge occurs between the electrodes for each unit cell of the panel, because they are related to each other:

. Introduce the limit according to the point where the unit cell changes; The state of charge on the surface memory depending on the unit cell process (originally bright or not bright). Embodiments The present invention will be clearly understood by referring to the non-limiting specific examples shown in the drawings.

Various general specific examples of the present invention are described below. The first specific example is applied to a matrix type plasma panel, and has only two array electrodes E1, E2, one for each plate, and is used for both addressing and continuous discharge. Other specific examples are applied to a coplanar type. Plasma panels have two arrays of continuous electrodes ESI, ES2 on the same board called a coplanar board, and two arrays of address electrodes EA1 on a board called an address board opposite the coplanar board, and a coplanar board On EA2. These other specific examples are applied to conventional coplanar panels, where the coplanar electrode array is used for both addressing and persistence, meaning EA2, and then merged with ES2.

Page 19, 200428331 V. Description of the invention &quot; A '-------- Second material-continued-electrode I2 or £ S] * ES2i body interlayer f, and then coated with a magnesium oxide address plate: ^: The number of 'nan' and in any case is higher than the general m; materials with these electrodes and W // · electrodes Ei or εμ continued, or in the case of coplanar panels, the umbrella is called holding, In the case of charge generation operation; from the image / image scanning or sub-scanning, each area has an external point threshold limit value ^ =, when the minimum £ 2 is used as the anode, the minimum panel point voltage is called Min [v package / T—E2E1. The maximum value of the inductive power J in all areas of the panel is called M 了], and the panel where all the panels are coplanar includes ^ Ca1].扪 』After the upper area, there are external J ^ discharge areas in each area of the panel;丨 Pro, the matrix point threshold voltage Vet knows the matrix point threshold voltage in the field, and the load generation operation is also the highest of Min [VET_EmA1] and / or the plane point threshold voltage; ^ all the panel threshold voltages of the detection panel He Gongping Vet ~ ES2ES1], and the panel is called Vet_ea2em] and Max [the maximum value of the voltage, respectively, from the base of the present invention: Err body / other ~ according to the basic characteristics of the present invention ^ The system is about the steps of charge generation or charge generation and conditioning. 'These operations each include a step τ bottom operation. The rapid charge generation end step 炎 is a period of r 1. The next step, called the start of the electrical interval, must be period I. * 2, the first step 钍, called the pass from the charging area within the P2 ... s, if necessary, the second step will give full benefits. One step: EA2 and ES2 are used as the anode = value voltage VET — ES2ES1, and the operating condition of the matrix point induced voltage ^ 2 at ^ 2ΕΑ1 is also 钬. Plane plate U; ^ r17, not altogether Z also, ^…, 0 face; A ^ page 20 200428331 V. Description of the invention (15) Figure 1 illustrates the charge generation or priming operation of the matrix panel: The external voltage between the poles E 2 (anode) and E 1 (cathode) is connected to ——V ·· ST at the beginning of step P1 m bayonet VE2 £ 1_P1_ND at the end of step p 1-E2E1-P2_ST at step P2 At the beginning-VE2E1_P2_ND at the end of step P 2 Figures 2 and 3 illustrate the generation or application of charges on a coplanar panel. The following are the address electrodes EA2 (anode) and EAl (p plum), and the continuous electrode ES 2 (anode). And E S1 (cathode), A, resolution: red pressure, the following electrical bottom operation, on the other hand can be connected

V ES2ES1_P1_ST opens at step P1%-VEA2EA1_P1_ND and VES2ES1_P1JD at step P! 眭 V V VeA2EA1_P2_ST and VES2ES1_p2 — ST at the beginning of step P2-VEA2EA1_P2JD and VES2ES1_p2_ND are simplified for the sake of clarification, in order to clarify the steps in order to clarify the steps. Use the same reference number. "Every lotus in the afternoon" ^ _ For a specific example or coplanar I see Figure 1. The two steps P1 and P2 are defined as follows: 'E2E1—P1—ST &lt; M i η [VET_E2E1]; None of the cells has exceeded the discharge point induction limit. 7 = The charging state obtained from the operation during the scanning or scanning is not good. 9 × Min [VET E2E1] is better, so the weak point in the E2 area from the conditioning step is weak. Discharge starts; start 'Ve2E1_P1_ND &lt; M a X 〔VET—E2E1〕; therefore, in Ueda m also K-words move

EA2EA1-P1-ST specific examples At the beginning, after scanning E1_P1_ST ^ before the panel step P 1

Page 21 200428331 V. Description of the invention (16) 'All the unit cells of the panel exceed the threshold value of the discharge point. 5 Regardless of the state of charge obtained by the previous operation, in order to produce the initial conditioning state; VE2E1_P1_ND S 1 · 1 X Max [VET E2E1] is better, so as not to unnecessarily prolong the period of slowly increasing potential P1 and combine it with the period of rapid increase of potential P2 as soon as possible; --Y E2E1_P2_ST II 丨 E2E1_P1_ND 'Make one step P 1 and P 2 linked together' and No transition; and—νΕ2Ε1Ρ2_ΝΙ) is defined in the same manner as in the prior art, so that at the end of step P2, the required bottoming level can be obtained in the entire discharge area of the panel.

In step P1, the increase rate of the potential VE2E1 between the electrodes, or the instantaneous value of the slope dVE2E1 / dr, is in accordance with the prior art, that is, r 1 is lower than 5 V / # s during the entire period of this step; relatively, According to the present invention, in step P 2, the increase rate of the potential VE2E1 between the electrodes, or the instantaneous value of the slope dVE2E1 / dr, is substantially larger than the prior art during this step period r 2, preferably greater than 1 OV / // S . Generally speaking, according to the present invention, in step P2, the potential between the electrodes at the end of the charge generation period is increased, which is much faster than that at the beginning of this period in step P1; therefore, the primer operation time is greatly reduced without losing Any quality of these operations. Second specific example: coplanar panel case '' See Figure 2. The two steps P1 and P2 are defined as follows:

—VeS2ES1_P1_ST &lt; M i Π [\ ET_ES2ES1], so 'At the beginning of step P1, the coplanar discharge point threshold limit has not been exceeded in any unit cell of the panel, regardless of the charging status obtained by the previous operation; preferably VES2ES1_P1ST 2 0.9 XM i η [VET ES2ES1], so starting from step P1, the weak point is activated in the panel area.

Page 22 200428331 V. Description of the invention (17) Coplanar discharge starts, —VES2ES1_P1_XD &lt; Max Γ VET_ES2ES1] • Therefore, at the end of step PI, the unit cell of the panel exceeds the threshold for coplanar discharge, Regardless of the state of charge from the previous operation, an initial conditioning state is generated; it is best to Ves2ES1_P1—l · Max [VET ES2ES1] 'so as not to unnecessarily prolong the P 1 period and combine the P 2 period as soon as possible; Y EA2EA1_P1 &lt; M i Π [VgT_EA2EAl] 'means that at each instant 7Γ of the conditioning step P 1, the potential difference VeA2EA1_P1 between the address electrodes remains below Min [

VeT_EA2EA1], so in this step, no matrix discharge occurs in the panel; note that this inequality is satisfactory at any instant of P1, knowing that VET_EA2EM can vary in P1, depending on the charge generated near the electrode; V EA2EA1_P2_ST & lt M i Π [V et_EA2EA1], so 'At the beginning of step P2, the threshold value of the matrix discharge point is not exceeded in any unit cell of the panel, regardless of the state of charge obtained from the previous operation; preferably VEA2EA1_P2_ST 2 0. 9 X Min [Vet_EA2Eai], so starting from step P2, the weak matrix discharge is started in the area of the panel; and-VEA2EA1_P2_JD is defined in the same way as in the prior art, so as to obtain the required area in the entire discharge area of the panel Base level. In step P1, the increase rate of the potential VES2ES1 between the electrodes, or the instantaneous value of the slope dVES2ES1 / dr, is substantially higher than the prior art, and preferably exceeds 10V /// S. In this step P1, the potential V The increase rate of EA2eai can be zero, low or high, but the potential remains below M i η [VET EA2EA1]. In step P2, the increase rate of the potential VEA2EA1 between the address electrodes, or the instantaneous value of the slope dVEA2EA1 / d r, is substantially higher than that of the prior art, and it is better to exceed

Page 23 200428331 V. Description of the invention (18) 10V / // s; In this step P2, the increase rate of the potential VES2ES1 can be zero, low or high. Generally speaking, according to the present invention, the charge generation operation is performed by exceeding the co-planar discharge thresholds before starting to exceed the first matrix discharge threshold. In this way, the gas is conditioned before the matrix discharge begins; This advantage is because a coplanar discharge occurs on a material with a high secondary electron emission coefficient ^ The material is coated on the electrode of the coplanar plate ', so that in step P1, a weak coplanar discharge ES can occur at a steep slope 1-ES 2; the conditioning so achieved in this step P1 can occur in step P2 with a weaker matrix discharge EA and EA2 at a gentler slope than in the prior art, although the secondary emission performance of the material (generally phosphorus) is generally In the mean, the material is the electrode coated with the address plate, which is used as the cathode. Due to the present invention, the priming operation time is greatly reduced, and the panel with poor phosphorous secondary emission performance can achieve correct operation. Lose the quality of these operations. Third specific example ·· The case of coplanar panels This specific example is different from the previous one, in that it can "tolerate" a finite matrix discharge during coplanar conditioning. Referring to Figure 3, the two steps P1 and P2 are defined as follows:-VeS2ES1_P1_ST &lt; M i n [\ ET_ES2ES1] and VEA2EA1_P1_ST &lt; M i Π [

VeT_EA2EA1]; therefore, 'at the beginning of step PI', any unit cell of the panel does not exceed the coplanar or matrix discharge point threshold. Regardless of the state of charge obtained from previous operations, it is best to be Ves2esi_pi_st — 〇 · 9 XM i η [Vet_ES2esi] and / or Vea2EA1_P1_ST 20 · 9χ Min [v ETEA2EA1] 'So starting from step P1' Start coplanar or matrix discharge start;

200428331 V. Description of the invention (19) — 'ES2ES1—P1_ND> M a X [\ ET_ES2ES1] and ~ EA2EA1—P1_ND <M i Π [' ET_EA2EA1], so 'at the end of step P 1' in each cell of the panel Exceeding the coplanar discharge point threshold limit, regardless of the discharge state from the previous operation result, and the matrix discharge point threshold limit within all or part of the unit cell, in order to generate the initial conditioning state; V Ei \ 2EM_P2 JD as first Other technologies are defined in the same way in order to obtain the required bottoming level in the entire discharge area of the panel. In step P1, the rate of increase of the potential VES2ES1 between the electrodes, or the slope dVES2ES1 / d 7: the instantaneous value, is substantially higher than the prior art, preferably higher than 10 \ / μ s; in step P2, the potential The increase rate of VES2ES1 can be zero, low or south. Due to the invention, the operation time of the primer can be greatly reduced, or the correct operation can be achieved with a panel with poor phosphorous secondary emission performance, without compromising the quality of these operations. The fourth specific example: the case of coplanar or matrix panels This specific example provides the conditioning that occurs in P1, which can be performed using strong discharges' in all or several cells and weak discharges in other cells. This is not a preferable specific example unless the strong discharge is a continuous discharge. Fifth specific example: the case of coplanar or matrix panels. The fifth specific example is the fourth specific example, which is added between steps P1 and P2, and contains the possibility that there is no discharge period in all or part of the unit cell. The time of the period does not exceed 2 0 // s, so when the discharge starts during P2, the conditioning effect of P1 is still effective. The period in which no discharge is actually used is known in the prior art and is not described in detail here; the internal voltage must remain below the point threshold.

Page 25 200428331 V. Description of the invention (20) The above non-limiting description of the various specific examples of the present invention can increase the rate of increase of the potential applied between the electrodes in the panel reset operation compared to the prior art; therefore, the present invention can: • It is not to reduce the time of deployment in the primer operation and use it for addressing or continuous, thus improving the fidelity or peak brightness of the panel; • It is not to exclude the panel with a strong discharge to improve the panel in the base of the standard slope Production efficiency. Finally, it is obvious to those skilled in this way that the present invention can be applied to other situations, and the use of a ramp signal to drive the plasma panel does not violate the scope of the patent attached to this case. The implementation of the present invention &lt; 歹 j spear comparative example uses the same coplanar plasma panel with three array electrodes, including two coplanar electrodes X and Y on the front plate, and electrode A for addressing on the rear plate, which can be applied. Various charge homogenization or reset signals and evaluate the impact on discharge in these signal applications. Such coplanar panels are well known in the prior art and are described in the introduction to this description. The electrodes are also referenced by the numbers X, Υ, A. Figure 4 shows the timing diagram of the voltage signals applied to the various electrodes X, Y, and A of the panel during the priming operation: a linear voltage ramp, which is characterized by the continuous and address electrodes Y (equivalent to electrode EA2, and here with The ES2 of the above general specific example is consistent), the slope peak level VpY is applied, which is 400 V; beyond this time, a certain signal is applied to the X electrode (usually called "shared" electrode) which is only used continuously VpX, and a certain signal VA-20 is applied to the address electrode A located on the other board. These signals are used to indicate the panel's response to the presented steep slope.

200428331 V. Description of the invention (21) It is true that the invention is not used. During each priming operation, the intensity of the strong discharge Ds, which occurs by accident and jumps in normal use, is recorded using a light-sensitive sensor placed in front of a set of discharge areas on the screen. The resulting records are equivalent to Figures 5 to 7; all of these records are generated under the same priming operating conditions, especially when linear ramp signals are used, except for a certain bias signal VpX value of the coplanar electrode X: Figure 5: VpX = + l 00V: at least for continuous internal point thresholds between electrodes Y and X, arriving later than internal point thresholds between address electrodes Y and A; therefore, matrix discharge takes precedence; visible In the case of no pre-conditioning of the unit cell, there are many strong discharges Ds due to excessively high slope values;-Fig. 8: VpX =-1 2 0 V: the internal point approach limit between the address electrodes Y and A Value arrives later than at least the internal point inductive limit between electrodes Y and X for continuous use; therefore, co-planar discharge initiation is prioritized; the figure shows that no strong discharge Ds exists, relying on weak co-planar discharge and previous conditioning Unit cell; this shape represents the invention. Figures 6 and 7 correspond to the intermediate state, where VpX is equal to 0V and -80V, respectively, and it can be seen that the residual strong discharge Ds is unacceptable. In each priming operation, at least the potential difference between the continuous electrodes Y and X 'and the potential difference between the address electrodes Y and A are increased with the same linear slope, and the situation is similar to the situation shown in Figure 2. , Which corresponds to the second specific example of the present invention described above; according to the present invention, as shown in FIG. 8, the priming operation starts with the first step P1, in which coplanar discharge is given priority, and the coplanar electrode X is relative to the address Electrode A is fully negatively biased; between address electrodes Y and A

200428331 V. Description of the invention (22) When a certain voltage level is exceeded, matrix discharge will inevitably occur, because the matrix point threshold is exceeded, no strong discharge will occur during this time, because the discharge area has been “conditioned” in advance using coplanar discharge. Therefore, each bias voltage at X and A determines step P1, which is characterized in that only coplanar discharges generate initial conditioning states of each unit cell. The intermediate states shown in Figs. 6 and 7 correspond to co-planar and matrix discharges in a unit cell operating simultaneously. Since the slope applied between Y and A is as high as that applied between Y and X, insufficient conditioning results in a strong discharge. In order to prevent strong discharge Ds, the solution of the present invention can be applied to the gentle initial slope between electrodes Y and A, as in the third specific example of the present invention described above.

Page 28 200428331 Brief description of the diagram. Figure 1 illustrates the timing diagram of applying a potential difference between the electrodes of the matrix panel during the charge generation operation according to the first specific example of the present invention. Figure 2 illustrates the second specific example according to the present invention. In the charge generation operation, a timing diagram of the potential difference is applied between the address electrodes and the continuous electrodes of the coplanar panel; FIG. 3 illustrates a third specific example of the present invention, in the charge generation operation, in the address Timing chart of potential difference between electrodes and continuous electrodes of coplanar panels; Figure 4 shows the detailed specific examples listed in the description. During the charge generation operation, three array electrodes of conventional coplanar panels are applied. The general timing diagram of voltage is used to illustrate the advantages of the present invention compared with the prior art timing diagrams. Figures 5 to 7 illustrate the strong discharge caused by applying voltage to three array electrodes according to the fast timing diagram, which is outside the scope of the present invention. FIG. 8 shows the advantage of the present invention, that is, according to the fast timing diagram, when a voltage is applied to the three array electrodes, there is no strong discharge.

Page 29

Claims (1)

200428331 VI. Scope of patent application 1 · A display device, including: an AC plasma panel with memory effect, including two plates with space to accommodate the discharge gas, and two arrays of intersecting electrodes, at least for addressing ' At its intersection, the space between the plates' defines a photo-discharge area; a drive mechanism is suitable for applying a voltage signal to the electrode and is suitable for operation, aiming to homogenize or reset the charge in the discharge area; its characteristics The design of the driving mechanism is in a special reset operation of a set of discharge areas. If each discharge area of the panel has at least an external matrix point threshold voltage (between the electrodes used for addressing and intersecting the area at least) VET_E2E1), and let M i η [VET E2E1] and Max [VET E2E1] be the minimum and maximum values of the matrix point voltage (VET_E2E1) of the area, respectively, at least for the addressing and interfacing electrodes in this area The applied potential difference VE2E1 increases, and once VE2E1 exceeds 1. lx Max during the reset operation [Vet_E2E1] 'referred to as the end of operation slope' ratio "E2E1 in Min [Vet_ At the moment between E2E1] and Max [VET_E2E1], the maximum slope of VE2E ^ is even steeper. 2. The device according to item 1 of the scope of patent application, in which the slope of the end of the operation which raises at least the potential difference between electrodes for addressing is greater than 5 V /// s. 3. For the device in the second item of the patent application, in which the slope of the end of the operation is increased by at least the potential difference between the electrodes for addressing, which is greater than 10 V // z s. 4. For the device in the scope of application for patent, item 1 in which Page 30 200428331 6. When the patent application is set, the potential difference (vE2E1) applied between at least the electrodes for addressing is uniform and strict when M i η [VET_E2E1] &lt; VE2E1 &lt; Max [VET_E2E1] Increaser. 5 · A display device comprising: an AC plasma panel with a memory effect, including two plates, with a space left between them to accommodate discharge gas, and two intersecting electrodes of the array, at least for addressing, at the intersections, In the space between the plates, a light discharge area is defined, at least two array electrodes are used for at least continuous, and one electrode of each array is placed across each discharge area. 5 A driving mechanism is suitable for applying a voltage signal to the electrodes. The reset operation is suitable for the purpose of homogenizing or resetting the electric charge in the discharge area, which is characterized by 'the design of the driving mechanism is in a special reset operation of a set of discharge areas. There is an external matrix point threshold voltage (VET_EA2EA1) at least between the electrodes used for addressing and intersecting in this area. Let M i II L ~ ΕΤ_ΕΑ2ΕΑ1 ″ and MaX 〔~ ΕΤ_ΕΑ2ΕΑ1‖ as the matrix point electrification of the or group area, respectively. The minimum and maximum values of the dust (VET_EA2EA1), if each discharge area of the panel has at least one external common The area limit voltage 'sets Min [V ET_ES2ES1] and M a X [\ ET_ES2ES1] as the minimum and maximum values of the coplanar point induced voltage (V ET_ES2ES1) of the group area, respectively. The potential difference VEA2EA1 applied between the area addressing and the electrodes to be transferred shall not exceed the value of M i η [VET_EA2EA1]. At the same time, it is used at least for the achievement and the potential difference applied between the electrodes across this area. 200428331 Sixth, the scope of patent application Max [VET_ES2ES1] value, once at least for continuous application of the potential difference between these electrodes VES2ES1 has exceeded the value of Max [VET_ES2ES1], that is, the rise is called the forward operation end slope, one is at least for In this group, the potential applied between the electrodes addressed and transferred in this area 'Once the potential difference VES2ES1 applied between the electrodes at least for holding and crossing the area has exceeded the value of Max [VET_ES2ES1], the rise is called the forward operation end slope Compared with the instant between VES2ES1S Min [VET ES2ES1] and Max [VET_ES2ES1], VEA2ea1 grows at a steeper slope. 6. The device according to item 5 of the scope of patent application, wherein the slope of the end of the operation is increased by at least the potential difference between the electrodes for addressing, which is greater than 5 V /// s. 7. The device according to item 6 of the scope of patent application, wherein the slope of the end of the operation is increased by at least the potential difference between the electrodes for addressing, which is greater than 10 V /// s. 8. The device according to item 5 of the scope of patent application, wherein when VES2ES1 is between M i η [Vet_ES2esi] and Max [Vet_ES2esi], at least the potential difference VES2ES1 applied between electrodes is increased, which is called the operation start slope Degrees, greater than 5V / // s. 9. The device according to item 8 of the scope of patent application, in which 'this is used for at least the starting slope of the increase in the applied potential difference between the electrodes, which is greater than 10 V / // s. 10. The device according to item 5 of the scope of patent application, wherein, during each of the special reset operations, the potential difference (VEA2EA1) applied between at least the addressing electrodes is between Page 32 200428331 6. Scope of patent application M i Π [\ ET_EA2EA1] <Y EA2EA1 <Max [\ _ ΕΤ_ΕΑ2ΕΑ1] The number of daily guards is uniform and strictly increased. 11. The device according to item 5 of the scope of patent application, wherein, at the time of each of the special charge equalization or replacement operations, the potential difference (VE S2ES1) applied between at least the continuous electrodes is at M i η [V ET_ES2ES1] <'ES2ES1 &lt; Max [Vet_ES2esi]' is a uniform and strictly increasing one. Page 33