DE2023692B2 - Circuit arrangement for luminous intensity control for a flat television screen - Google Patents

Description

65 this arrangement also stimulates undesired light-emitting elements.

From FR-PS 15 47 955 an image display _______ device for controlling the excitation of a large

<r

^ g of clektroluminescent picture elements in relation to applied voltages of any polarity

knows, where crossing row and column lines switch below an upper threshold voltage

ter are present, at the crossing points of which, however, when a voltage of any polarity is applied

Leuchteleroente are arranged. In this image above the upper threshold voltage from the supply

playback device is connected to the row conductors one after the other with high resistance in a state

who put the operating potential around. This change will take place after

all keep a video signal information at the same time - a timing system specific to the threshold switching elements

mation according to the brightness of the display delay, although the switching process when it is only

coming picture. The lighting element is initiated, essentially instantaneously

an energized line will be idle at the same time. The semiconductor threshold switching elements

state, while the operating potentials automatically return to their state of high return.

tial is placed on the next line. It stood back when the current flowing through it

From the DT-AS 10 72 650 a device is to drop below the minimum house current close to zero. Playback of images with a variety of through The threshold switching elements have immediately after an energy source fed, light-emitting xs switching into the non-conductive state of a we-picture elements known, at which the brightness control significantly reduced threshold voltage. The standard takes place by means of transfluxors, which according to the energy male, original threshold voltage becomes flow from the energy source to the picture element corresponds to a relatively short time delay Reduce the brightness to the desired level. The recovery during which the threshold light duration of the picture elements is constant. ao tension increases progressively, reached again.

In the earlier German patent 17 62174 semiconductor materials for the construction of such proposed that the lighting elements with a single threshold switch elements can advantageously hold The direct current pulse of constant amplitude must be of the type described in the patent ..., excitation The length of this direct current pulse depends on S. R. Ovshinky, (patent application) of the desired brightness. »5 corresponding to the USA. Patent 32 71 591, described

The present invention aims to be. By modifying the basic principles of semiconductors, a circuit arrangement of the above reference or the treatment of the above handle of the claim specified type, patent specification described material, it is possible the line-by-line excitation of the light elements creates the upper and lower threshold voltage, which enables blocking and in which the brightness control by 30 or leakage resistance and that of the device are own Control of the lighting duration of the lighting elements easily adds time delay values in this way he follows. vary so that the desired range of conditions

The solution to this problem is given by the conditions that can be achieved for those who do not work properly Features of the patent claim !, ability of electroluminescent matrix systems

Briefly speaking, the invention provides that a measure of the invention is required.
It has been found that the inherent application of an operating potential to the selected shafts of the above type of row of electroluminescent elements by threshold switching elements have unexpected advantages when they are used for the row circuit line during each column switching presentation of video signal information used line receives a video signal information, which is 40. A special feature inherent to the elements due to the electroluminescent circuits along the line of particular importance is that the selected row circuit lines can be varied under- Time delay between the point in time at which different points in time are excited, so that the threshold switching elements have a threshold voltage from the individual picture elements along the line. is applied and the point in time at which the Schwelschaltungleitung light of different intensity 45 lenschaltelemente is actually emitted from their blocking state. The operating potential applied to the selected row switching high resistance in its conductivity state line is switched over with the same low resistance, but eliminated early, so that all picture elements due to this switching are practically instantaneously excited along this line. Then the next row circuit line is excited within nanoseconds, for example, and the switch-on delay of these elements is fed to the video information. This advance with changes in the over the threshold voltage of the gear is repeated line by line, so that finally relevant elements beyond the applied voltage the whole pattern or picture to be presented is formed changeably. An increase in tension from the will. If the speed of this line-by-line threshold voltage is scanned from the electroluminescent device to a higher voltage, a reduction in the element's own value is selected so that it exceeds the speed of conventional switch-on time delay. If, therefore, a voltage pulse is applied to the blanking elements sent out by television transmitters, the signals of which correspond, a conventional television picture can be fenden elements or larger by means of the electrolumines- amplitude equal to the threshold voltage of the arrangement in question, but which can be reproduced during. 60 lasts a period of time that is less than

The switching elements used according to the invention are elements of their own and that of the tensioning elements in question are single-layer threshold semiconductor device amplitude associated time delay, see above Lines with essentially the same conductivity, the threshold switching element is not in the conductive opposite applied positive and negative live state. On the other hand, if the nings. Compared to one another, however, they can have an amplitude-dependent threshold switching element different threshold voltages gnal is supplied, which the switching element own to have. The threshold switching devices have time delayed this, at a time start a very high electrical resistance to become point-conductive, which depends on the amplitude of the

applied signal is determined. So when the threshold circuit or image used in accordance with the invention is presented to the section of a video pattern to be presented. The electroluminescent elements as operating potential an alternating voltage zente arrangement, a certain number of is applied, the frequency is high enough, so row and column circuit lines in XY-Ma that the periodic pulses have a duration, 5 trix arrangement with formation of a switching point at each shorter is than that of the element and the line lines corresponding to the intersection of the column and row scarf amplitudes of the applied voltage. At each of the switching points time delay, a voltage exceeding the threshold voltage can be connected to the switchable electtroluminescent circuit by means of a threshold switching element, without the conductive being activated. Minescent circuit advantageously has a

Another one with the largest non-directional sleeper shaft element in the invention Advantageously, threshold switching elements used time delay properties, a luminous element own peculiarity is their own time delay and a resistance on. There are institutions tion when restoring the original Threshold voltage after switching off the circuit lines one after the other an operating potential element as a result of the decrease in current strength to be applied below tial. Even if any given the minimum holding current. This means that after the flyback line is energized, each of the on-toggles remains of the switching elements in a substantially sealed electroluminescent circuit There is a reduced threshold voltage, but with 20 a stable off state, up to each of the gaps increasing Time until a start signal is applied to the original, normal circuit lines. Value increases. Therefore, if within the period of time only then will the electroluminescent switchover Time delay in the restoration, the conditions that end at the switching points of the selected row Switching a threshold switching element in and column switching lines are connected, the non-conductive state follows, stimulated to this EIe 25 to emit light. The light intensity of ment a voltage pulse is applied, each of the amplitude between the selected rows needs this impulse only hangs like the then prevailing electroluminescent circuits see momentarily lower threshold voltage from the 2nd point in time in which the light emission in to be to the threshold switching element again lei- activity is set. Preferably all close. 3 ° borrowed electroluminescent circuits along the

If the line selected on the threshold switching element is de-energized at the same time by the occupied Operating potential an alternating voltage of the opposite drive potential from the row connection line Frequency is such that each one is switched periodically. Then it receives the next consecutive time Pulses within the operating potential for the circuit line, so that they are complete Restoration of the original 35 on the other hand can display video information. Threshold voltage required time delay In the drawing are a schematic representation

takes place, these switching elements become an embodiment of the invention and the period of the applied voltage continuously conducting according to characteristic curves that explain their functionality, even if the applied voltage is essential.

borrowed is lower than the normal, original 40 F i g. 1 is a simplified block diagram of a Threshold voltage. electroluminescent presentation system with a

By using the switch-on time delay circuit arrangement according to the invention; of the above threshold switching elements and FIG. 2 is a diagram for illustrating the

Time delay in restoring its original circuit components of an electroluminescent The initial threshold voltage can be numerous 45 circuitry that acts on each luminous element of the electro-surprising Benefits can be achieved. The emergency luminescent arrangement according to the invention a plurality of threshold switching elements is applied;

th with essentially the same threshold F i g. 3 is the current-voltage characteristic

Selecting tension is disabled as the threshold switching used in the invention is effective and reliable operating range of these 5 ° elements;

Switching elements (the tolerance range) with increasing F i g. 4 is a graphical representation of the timing

Frequency of the applied operating potential is the same as that used in the invention loaned is increased. All of these switching elements allow threshold switching element to be inherent; readily appear on the large scale as films or thin figs. 5 is a graph of the timing

Produce layers with planar layers by delaying the restoration of the original gen areas made of electroluminescence threshold voltage, the ver in the invention material are in contact, so that the possibility of turned threshold switching element is inherent; consists, flat and relatively thin image. FIG. 5 a is a diagram for illustrative purposes

to manufacture umbrellas. the relationship between the frequency and de

The invention thus provides a circuit arrangement 60 for the threshold voltage used in the invention for line-by-line excitation of the individual light elements, threshold switching elements; and elements of the electroluminescent arrangement in sol- F i g. 6 is an illustration of a series of We

rather, each individual luminous element is excited along a period of time to illustrate the activity on a selected row during different electric luminescent circuits, so that a multitude of undefined row circuit lines of an electric luminous intensity of different light intensities are generated. A descent X- V arrangement for generating the g through a gray scale gradient is achieved on the desired changes in the light intensity d selected line, so that a single scanning line releases individual electroluminescent circuits

7 * 8

the selected line to create a gray scale. After line 17 is fully aroused, will for the device according to FIG. 1 generated them quickly shut down and the operational potential Presentation sample or image. is fed to the next row line 18, while

F i g. 1 shows a simplified form of a new video signal information in the video system, which is used to operate an electrolu 5 signal information converter with parallel output 30 minescent arrangement according to the principles of being stored and processed. Then the Invention can be used. A control switch video signal information to the column switch is generally designated 10 and is used to put lines 22 to 27, so that all light actuation an electroluminescent X-Y Ma- elements along the row circuit line 18 antrix arrangement 12, controlled by a video io. This process will quickly receive signal information anger 14. The video signal keeps fetching until all the horizontal lines are energized Information receiver 14 can be a conventional remote and a complete "frame" or a be a visual receiver and the corresponding video image is formed from the video signal information. gnalinformation and synchronizing pulse signal information after energizing the last row circuit line mation for the line-by-line actuation of a multiple 15, the process is repeated automatically so that a number of electroluminescent circuits 16 or another “frame” or another picture from Vilang a given one of a plurality of line deo information is formed. In this way Supply circuit lines 17, 18, 19, 20 and 21. can quickly change presentations or images The video signal information is transmitted to a plurality of the electroluminescent device 12 in Ubervon Column circuit lines 22, 23, 24, 25, 26 10 in accordance with the video signal information and 27 laid out in parallel. In this case, facilities are presented to a television receiver intended to be the excitement of each luminous.

elements along the selected line according to FIG. 2 shows the circuit components of a ge

the amplitude of the supplied video signal information of the invention used electroluminescence to delay such that each luminous element aj th circuit. The electroluminescent circuit 16 is only excited for a period of time that the ampli has a resistor 35 which is connected to a Spantude or the relative brightness of the presentation amplitude and time delay thresholds corresponding signal. switching device 36 is connected, in turn

The electroluminescent arrangement is connected to a luminous element 37 for operation. It is to note 12 according to the invention is preferably a 30 note that both the circuit arrangement geOszillator 28 with gate circuit (gated oscillator) pre-measured F i g. 2 is shown as a series circuit, which is seen from the video signal information emp- invention in the broadest sense all with this catcher 12 synchronization signals via a line 29 components possible circuits for emitting that operate the oscillator 28 in such a way that ren of light according to a selectively supplied lines 17 to 21 at a rate of 35 th video signal information. The lights are excited one after the other, the vertical ab- ment 37 acts in the circuit as a capacitor, sweep speed, for example when the threshold switching element 36 becomes conductive, corresponds to a television set. A video signal in- is fed to the electrode 37 α charge. If the formation converter and a circuit with par current intensity of the current flowing through the threshold switching element alldem output 30 receives video signal information 4 ° 36 falls below a minimum holding current vim learn video signal information receiver 14 above, the charge on the electrode 37 a remains to a video line 31 and converts the series backwards until an incoming video information is applied to parallel out voltage of opposite polarity during the next half period. This can be added by any known means for the conversion 45 element to the charge on the electroluminescent element, whereupon the threshold of serially incoming information in parallel switching element 36 becomes conductive and the light element «. \ t outgoing information (serial to parallel conver- sion and converging it with a voltage of opposite sion) can be achieved. After all video information polarity recharges. The electroluminescent mations in the video signal information converter circuit is therefore a bistable circuit, which is stored in with parallel output 30, calls a more than 5 »its stable switch-off state remains until the synchronization pulse supplied to a line 32 the threshold switching element 36 for the first time, for at least stored video information. These become an impulse that is made conductive. Subsequently, simultaneously or essentially simultaneously, the electroluminescent circuit in a small electroluminescent circuit 16 remains within a stable switched-on state as long as voltage remains applied to the switching point of a given selected row, for example those 55 of the lines 17 and 22 of the row circuit line 17, supplied. Each of the threshold switching element 36 own time luminescent elements 16, which lie along the line switching delay in the restoration of the original line 17, is increased to a different threshold voltage sets, during which of the operating potential to the 60 range, which is normally applied with capacitive like row circuit line 17. The luminescent bistable circuits can be achieved. elements that have been used for the longest period of time

are excited, emit the brightest light, and the threshold switching elements used illustrate light-emitting elements, which during the shortest time the Fi g. 3, 4, 5 and 5 a the different elec- tric voltage are excited, emit the lowest light- 65 tric characteristics. The threshold switching element i »quantity. Its operation is varied between these limits, and intermediate values are possible, so that for a given image line that is to be presented with the current essentially in the same dimension i, a gray scale is formed in both directions and blocks or conducts. The Utnscha

509 51 Vi;

9 10

If, however, the maximum value of the applied Wechkeitsstatus occurs - after the time delay inherent in the device voltage above the threshold voltage has elapsed - extremely quickly. increases, the element is moved almost instantaneously. 3, a current-voltage curve is switched over to measure the curve sections 41-41 in its Leitfäschaulichung the alternating current operation of the threshold state, which is switched by the curve switching element 36, it being noted that sections 42-42 are illustrated. When a direct voltage is applied, only the first switching or switching takes place during each half cycle, which is approximately only the third quadrant. Assuming that the alternating voltage is applied. When the applied alternation, which is applied to the threshold switching element 36, approaches the value zero, so that the direct voltage is applied, as illustrated in the first quadrant through the threshold switching element 36 under three in FIG. 3, the minimum holding current value is located falls, it switches according to normally in its blocking state with high the curve sections 43-43 from the state of low electrical resistance. The curve 40 illustrates the electrical resistance in the state that brings back the current-voltage characteristic of the electrical resistance element, which is caused by the tes when the DC voltage increases. It blocks 15 curve sections 40-40 is illustrated.
the element essentially allows current to pass through. FIG. 4 illustrates the turn-on time delay of the threshold switching when the voltage is increased up to a threshold voltage element 36, the electrical resistance dei raktenstik decreases. In this figure, the normal threshold semiconductor materials are practically instantaneously in voltage at K ₇ - and the device's own at least one path through the semiconductor material, 20 time delay in the threshold voltage at T _d that forms the threshold switching device 36, is indicated by. The change in time delay is its high value to a low value. This is shown by curve 45. The threshold switching is essentially instantaneous. In this way a conductivity feed becomes conductive. This period of time is inversely formed in relation to the low electrical resistance, proportional to the applied overvoltage, such as when current can flow through the element. Which the curve 45 is illustrated. The values of the time-low electrical resistance is several toe-delayed and the threshold voltage can be changed in powers of less than the high electrical resistance, among other things by changing the to-resistance. The conductivity state is illustrated by the composition of the threshold curve section 42 for building. It can be seen that the semiconductor material used in the switching elements 36 changes a substantially linear current or the thickness of the layer or the film which forms the threshold switching element at a substantially constant voltage. It is noted, however, that the time delay T _d is the same for increasing and decreasing currents. In other words, the current conduction increase in the applied voltage between V _T occurs at an essentially constant voltage. and V ₁ ,, decreases. The time duration of the semiconductor material forming the voltage switching element 36, which is applied to the threshold threshold switching element 36, therefore only needs to be as long as the time causes a voltage drop that is only a small delay in the case of the voltage excess V _T Voltage drop in the locked state.

hen resistance is. F i g. 5 illustrates the threshold switching- When the voltage is decreased, the element 36 inherent time delay T ₁ decreases, the current along curve 42, and when the current restoring the original thresholds drops below the minimum current holding value, the 45 voltage increases after switching back to the non-conductive electrical resistance of the conductive path or state? This time delay is quickly illustrated in FIG. 46 by the curve of the paths through the semiconductor material. From this curve it can be seen that the low value goes back to the high value, like this. Immediately after the threshold switch is illustrated by curve section 43, so that element 36 has become non-conductive, the threshold that the high-resistance voltage has been reduced significantly, that it is established increases with time until pressed, a minimum holding current is required by which the normal threshold voltage V _T is reached again Threshold switching element 36 is in its conductive state. The time delays can easily be influenced to withstand However, the composition of the switching element is substantially reduced immediately after the semiconductor material used is changed and it has become non-conductive , the original Normal voltage or a pulsating DC voltage, threshold voltage, back. is operated, only the introductory span needs to apply in the event that an amplitude and a duration zi 36 an alternating voltage is applied to the threshold switching element 60, the current-voltage curves of both quadrants 1 and the time delay apply to the original threshold voltage according to FIG. 4 or one and 3 of FIG. 3. Here, the threshold switching element 36 associated with the overvoltage of the pulse is in its blocking state when the corresponding time delay corresponds. If izrn eil maximum value of the applied AC voltage nied- 65 subsequent voltage pulse to the threshold engined than the threshold voltage of the element. Switching element 36 is brought into effect, hevo The blocking state is illustrated by the curve sections it has fully recovered, ie the normal, ur 40-40 in both quadrants 1 and 3. initial threshold voltage V ₁ (Fig. 4) again

11 12

is established, this next voltage in the circuit line 17 an alternating voltage 50 pulse only needs to have an amplitude which is the same as that applied (Fig. 6), and is none of the then prevailing electroluminescent threshold voltage, the two circuit 16 along the line circuit, for example , depending on the point in time at which night 17 is excited. However, when a video signal is applied in the first voltage pulse, the 5 pulse on each of the column circuit lines 22-27 can range between 0.01V ₇ and V ₇ . Which is applied, enters the electroluminescent circuit in FIG. 4 illustrated switch-on time delay at the switching points as a function of a time can persist regardless of the point in time at which the delay in action, which corresponds to the size of the video information to be brought to the next voltage pulse of the threshold switching offer, element 36 is maintained, whereby if the relative brightness of each of the single difference consists in a shift of the gantroluminescent circuits 16 in ten equal zen curves 45 downwards, as this is divided by the brightness intervals or brightness levels in broken lines shown family of curves 45a, which with Bj- S ₁₀ (Fig. 6) is illustrated. According to the invention, a video pulse can be correct at any one of these threshold switching elements, once they are conductive 15 valle the degree of brightness that has been made with the elelUrolumines, through individual switching at close intervals at the switching point of the line switching elements, the voltage amplitude of which leads to the line 17 and any column scales lower than the original normal threshold line 22-27 is reached. So if there is a voltage in the switching element, video pulse 52 is continuously switched to a selected column. If, however, the applied line 22 to 27 is applied, for example voltage, ie the direct voltage or alternating voltage during the interval B ₇ , the brightness is voltage pulses during a period t _a , corresponding to the selected electroluminescent circuit 16 corresponding to the Apparatus own time delay 70% of the total brightness obtained by applying the restoration according to FIG. 5, interrupted all pulses within the wave packet that is being reached, the threshold switching element 36 25 containing the sine wave pulses 50 would be reached, that is, the original While the electroluminescent circuit 16 is energized normal threshold voltage of the device is full, is the voltage change at which the lamp is constantly being restored. The device ment essentially a DC voltage which is varied by the voltage whose amplitude is lower than a zero reference line 54. The voltage as the threshold voltage of the threshold switching device across the entire electroluminescent circuit is no longer conductive. In Fig. 5 A is but can be a variable DC voltage, the relationship between the threshold voltage and the frequency for the threshold switching element 36 because the AC voltage applied to the line 17 and the curve 47 applied to one of the lines 22 to 27 illustrates. Because of the Zeitverzö- video pulse are combined, as by the variable DC voltage 50 a voltage threshold, the switching element operates within indicated delay in restoring the Schwellenspan- 35th When a video signal is brought to the type of load or circuit arrangement on a selected column of a bistable operating range, regardless of circuit line 22 to 27, and the selected electroluminescent device to which it is connected. So if the threshold circuit makes conductive during a shorter time switching element 36 in conjunction with a capacitive 40 span, for example in the time inverse resistor is used, which also has a period B ₅ , then the electroluminescent to'stable operating range, create the combination circuit 16 emitted light so much that nized bistable properties of the device with it is only 50% of the total light emission of the capacitive resistance, here an electroluminescent light element during the interval, central element, in conjunction with the bistable BE 45 if both an operating potential and a drive range of the threshold switching element a feed signal to the selected circuit line: πι significantly expanded bistable operating range is also applied. The smallest amount of light emitted by einci with an increase in frequency. The extent of the resulting electroluminescent circuit 16 can be extended to the bistable range of an electroluminescent, is that which is represented by the brightness-related circuit according to the invention increases so as to B, in which only a single one increases with increasing difference between the The original pulse of the alternating voltage is applied to the light element 3 and which is initially applied. The greatest possible brightness that can then be obtained from a light element 37. This is achieved by increasing the distance, on the other hand by applying a video pulse between the elongated thin line on 55 of one of the column circuit lines 22 through 27 to: level V ₇ and curve 47 in Figure 5 A at the same time as the appended Operating potential applied to the selected rows by forming an electroluminescent switching line will so that. The entire circuit using the time interval described above, or the entirety of the pulses within the threshold switching element, can therefore be used in a new element 37 to excite the luminous minescent arrangement 12 according to FIG. So by operating the electric and unique way. minescent arrangement 12 according to the invention and <According to the invention, a continuously available operating potential is operated according to the illustration in FIG DC voltage pulse signal information to the vertical column circuit ket, can be viewed, is applied successively to lines 22 to 27, while applied to e> m row circuit lines 17 to 21. Selected row circuit lines 17 to 21 eil, for example, can be applied to the row operating potential in an instant, from each of the electro

13 14

luninescent switch car 16 different switching element 36 to be considered

Light intensities are obtained. The Zeitemchai- needs.

By selecting the times at which each of the top-to-bottom or bottom-to-bottom electroluminescent circuits are scanned one by one, so that the scan of the entire 5 selected interconnect line is excited, and electroluminescent arrangement 12 line woe is followed by stopping the excitation of all electroluminescent circuits, as a result of which an entire video image can be formed from the circuits at the same time, namely the. During the advancement of the operating potential The video signal information is from one line to the next, each Leuchtele video signal information receiver 14 is recorded to emit different amounts of light, which is a conventional part of a Fernselaemp- stimulated so that the gray scale is formed, catcher The oscillator 28 with gates screen with luminous elements for the display will bring a vertical scan synchronizing pulse. The simultaneous termination of the Erregenuived. The gated oscillator causes all electroluminescent circuits to then apply an operating potential to a given row circuit line in accordance with the selected row circuit line, for example the invention provides an extremely simple method for the line 17 during a period of time that allows the deu threshold switching elements to be balanced time delay of a conventional television receiver corresponds to the time delay in restoring the gers.If this represents a threshold voltage applied to a selected line circuit line, since a given line circuit line is a circuit line during a single image of the AC voltage, as shown here, the video information to be displayed is only displayed once with time duration chosen between the pulses so that it needs to be excited to the operating potential,
is within the time delay inherent in the threshold switching element 36 in the restoration of the elements with the electrical original threshold voltage described here. With these properties in combination with an electroluminescent mode of operation, the threshold switching element 36 acts as a central circuit arrangement in which the light element basically acts as an isolating device, all of which acts as a capacitor, and by operating light elements against excitation until a video control pulse suitable for a plurality of such electroluminescent sound is applied whereupon all the pulses still contained in the package of the gray scale, essentially the gray drive potential, can then be applied to the light scale of a multi-element 37 to be performed without the origin - Deoinformation corresponds to a multitude of different., normal threshold voltage of the threshold light intensities are generated.

Hieneu 2 sheets of drawings

Claims (4)

■ I 2 The invention relates to a circuit arrangement. Claims: According to the preamble of claim 1. Arrangements for the presentation of 1. Circuit arrangement for luminosity information in the form of boards or panels, in control of at least one light-emitting 5 special two-dimensional display device luminous element, in particular for a flat gene for the visible reproduction of electronic television screens, with one for exciting the video signals, and methods and devices for the luminous element serving pulse voltage control of such arrangements. The subject of the source, the impulses of which are designed to excite a large number of desired luminosity independently of the respective finding, and io of luminous elements along a given line with a luminance control of the luminous element at times corresponding to the amplitude of the control voltage source serving in ments, which with the relevant individual row line for displaying the pulse voltage source or the illuminated video information. All luminous element is in control connection, as a result, elements are extinguished at the same time, denotes that the pulse voltage ts so that a gray scale is created which allows the source (14) to repeatedly generate a predetermined number of electroluminescent pulses from pulses (50 ; 50 a) generated in a predetermined changing video signal information to the Darbie period and that the lighting element to bring device. (37) of these in any given period of time. So far, the development of electroluminescent has come across one dependent on the control voltage, the ao matrices of the two-dimensional presentation type Luminosity-determining number of pulses numerous problems. Some of these problems follow receives. from certain minimum requirements that are met 2. Circuit arrangement according to claim 1, which must, in order to ensure reliable excitation and entdurch, that a first group (17 excitation of the individual light points to 21) and a second group (22 to 27) of »5 some of these requirements are as follows: The circuit lines so each other angeord- luminous element must be in accordance with the stored net that they form switching points (16) whose video signal information is controlled; the switching arrangement used for the number of individual points of the electroluminescent control of the luminous element corresponds to the fact that a luminous device must have a clearly defined threshold element (37) and a threshold switching element (36) 30 voltage. The tolerance for the threshold between each of the switching points (16) is switched, voltage of a plurality of threshold switching devices that each of the threshold switching elements (36) at lines must be very tight. In addition, the predetermined threshold voltage luminous elements must have a low energy consumption value after its own switching delay and must be conductive for mass production in that the pulse voltage source (14) 35 suitable geometric shapes, which are easily in Figure the first group (17 to 21) Circuit line shielding plates, like installing flat screens, is laid out, with the pulse voltage below sen. A known type of construction for an electrodem value of the threshold voltage of the threshold luminescent display panel is the cross-grid switching elements (36) that are of the control chip or the XY type. The voltage electrodes of this type of construction, which are arranged in parallel and are controlled by the video signal, are divided into strips on the second group (22 to 27) of and aligned at right angles to one another. Whether circuit lines lead to an increase in probably such panels are generally based on a kar voltage above the threshold voltage of the antsian coordinate system, they can, if desired, also on a polar coordinate of the luminous elements (37) during a closed threshold switch (36) for excitation Time system or some other system, span which corresponds to the brightness of the display for the display. With this type of display board, between bringing video information and the selected X and Y cross grid lines to the ground, a device for selectively ending the display Electroluminescent element applied to the conductivity of all threshold switching elements (36) crossing point an alternating voltage. In practice, such -Yy-display panels have the first group (17 to 21) provided along a selected circuit line of 50. this type numerous such switching points, their 3. Circuit arrangement according to claim 1, each one connecting device for a lighting element or 2, characterized in that one represents the formation of a point in the electroluminescent direction to delay the arrangement of the video signal. The excitation controlled voltage by a period of time that 55 selected light elements would be the performance of a function of the amplitude of the video signal in television pictures or other information patterns formation is provided. or enable numbers. When trying to 4. Circuit arrangement according to one of the screens of the type of the ^ -y display board pictures Spriiche 2 to 3, characterized in that to produce or reproduce, one comes across, however Switch-on time delay, which each of the thresholds 60 to numerous problems. The need to use Belenschaltelemente (36) is to determine the point in time drive potentials one after the other at which the luminous element (37) applies light lowing lines or columns in order to stimulate the individual luminous elements outside according to the video signal information one after the other det. Consequence that because of the capacitive cross coupling in