EP0196709A1 - Farbige Leuchtanzeigetafel zur Informationswiedergabe - Google Patents

Farbige Leuchtanzeigetafel zur Informationswiedergabe Download PDF

Info

Publication number
EP0196709A1
EP0196709A1 EP86200452A EP86200452A EP0196709A1 EP 0196709 A1 EP0196709 A1 EP 0196709A1 EP 86200452 A EP86200452 A EP 86200452A EP 86200452 A EP86200452 A EP 86200452A EP 0196709 A1 EP0196709 A1 EP 0196709A1
Authority
EP
European Patent Office
Prior art keywords
points
light
terminals
color
polarity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86200452A
Other languages
English (en)
French (fr)
Other versions
EP0196709B1 (de
Inventor
Serge Guennou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Radiotechnique Compelec RTC SA
Koninklijke Philips NV
Original Assignee
Radiotechnique Compelec RTC SA
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Radiotechnique Compelec RTC SA, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Radiotechnique Compelec RTC SA
Publication of EP0196709A1 publication Critical patent/EP0196709A1/de
Application granted granted Critical
Publication of EP0196709B1 publication Critical patent/EP0196709B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs

Definitions

  • the present invention relates to a light sign for displaying information, which comprises on the one hand a matrix of light points arranged in rows and columns on a support, each light point having a first and a second connection terminal and comprising at least one pair of light-emitting diodes, the first diode of the pair emitting in a first color and being connected according to a determined polarity to said first and second connection terminals, while the second diode of the pair emits in a second color, different from the first and is connected to said connection terminals in antiparallel relative to the first diode, a sign which comprises on the other hand an AC power source whose output terminals are coupled to the connection terminals of the light points by l by means of electronic switches controlled by a generator of control signals, which signals are chosen isis variable in time so as to make the switches passable during one and / or the other aftemance of the supply voltage according to a desired color variation law for the emission of light from the points of the matrix.
  • photocontrollable electronic switches such as photo-triacs or photo-transistors was also underlined as providing isolation and complete independence between the circuit supplying the light points with alternating current and the management circuits. and control switches, which can be formed from current logic elements, supplied with a DC voltage.
  • the invention proposes to indicate a new device which uses simplified means and which responds to specific application cases corresponding to a sign, that is to say when the quantity of information to be displayed is small enough to be contained at one time on the point matrix
  • a light sign of the type indicated in the preamble is particularly remarkable in that the law of color variation determined by said control signals is independent of the information to be displayed and provides a so-called "background” color variation for all the points for which the first and second connection terminals are respectively coupled to the output terminals of the power source according to a determined polarity, called “background polarity", while other points of the matrix, chosen to represent the information to be displayed, have the first and second connection terminals respectively coupled to the output terminals of the power source according to a reverse polarity of the background pofarity.
  • said first and second terminals for connection of the light points are removably connected to the support of the sign by a connection of the connector support type and plug pins.
  • the modification of a message can be carried out very simply by removing from their connector support the light points concerned by the modification and by connecting them again to their support while respecting the desired polarities: rune for the "background "and the other for the new message.
  • a component with two connection terminals which integrates within the same housing two semiconductor crystals of different nature and having respectively a p / n junction and an n / p junction, which are connected in parallel to said terminals, component in which the crystals are fixed side by side in a reflecting cavity so that their light emerges from the housing at almost the same angle.
  • Such components are described in the French patent application published under No. 2,520,934.
  • the diodes of one color are connected to the connection terminals of the light point according to a uniform polarity.
  • the information to be displayed is composed manually point by point, it can present text in any characters, but also signs or any kind of image.
  • the information presented is fixed but can be reconstructed at will and without limitation.
  • the sign according to the invention does not require the use of any keyboard, of any character or sign memory or of any management microprocessor. It is therefore of particularly economical construction.
  • the animation of the background color produces a pleasant effect and attracts the attention of the people to whom the information is addressed.
  • the information appears in the complementary color of the background color for example: green on a red background or red on a green background L on the contrary, the information is erased on a yellow-orange background.
  • the luminous sign is characterized in that a plurality of luminous points is coupled to the output terminals of the power source by the play of the same electronic switch, said plurality of points forming on the matrix a so-called “elementary background figure" which is independent of the information to be displayed.
  • Said elementary background figure may be a row of the point matrix, namely either a row or a column.
  • the mentioned coupling of the light points of the elementary figure to the power source can be made by association of these points in series, in parallel or in series-parallel.
  • the device according to the embodiment of the invention is much more economical, the number of switches required being divided by the number of points contained in the elementary figure, for example the number of points per line or per column.
  • the light sign shown schematically in Figure 1 consists on the one hand of a support on which are arranged in a matrix, light points 11a, 11b, 11c ... 1ln, on the other hand a source of power supply 16, with alternating voltage, the output terminals 17 and 18 of which are coupled to the connection terminals of the light points 11a ... 11n by means of electronic switches 25a, 25b ... 25m.
  • the light points of a column are connected together in series and the whole of the column is supplied through an electronic switch and a current limiting impedance such as a resistor R1.
  • the electronic switches 25a ... 25m are controlled by a generator. of control signals 30 which produces on its output terminals 301, 302, 303 ... 311, 312, 313 ... signals such as the electronic switches are turned on during one and / or the other alternation of the voltage of the electrical power source 16.
  • the group of outputs 301, 302, 303 ... 30m delivers signals which activate the electronic switches during theretemances of a first polarity and the group of outputs 311, 312, 313 ... 31m respectively activate the same electronic switches during the alternations of second polarity.
  • Point 11 has a first terminal 1 connection 2, a second connection terminal 14, and a pair of light emitting diodes 20, 21 connected to said terminals 12 and 14 in antiparallel.
  • the diode 20 emits green light, its anode connected to the connection terminal 12 and its cathode connected to the connection terminal 14 while the diode 21 emits red light and is connected to the terminals of connection 12 and 14 in reverse of the diode 20.
  • the other light points of the matrix are made up of identical elements connected in a similar way.
  • the light points are applied to the support in a removable manner, for example by plugging pins carried by the light points, into connector supports carried by the support panel.
  • the terminals 13 and 15 in Figure 2 represent the fixed connection elements forming part of the support and to which the light points are connected.
  • a first polarity uniform with respect to the output terminals 17 and 18 of the electric power source 16 is connected, the light points which are located outside the information and will therefore constitute the background color of the illuminated sign.
  • the light points representing the information to be displayed are connected, according to a second polarity, inverse to the first.
  • the light points of a column emit green light when they are connected according to the polarity corresponding to that of point 11a in FIG. 2, the light points which, on the contrary, have been connected in reverse polarity, will emit red light at the same time.
  • the light point 11 i in FIG. 2 illustrates the same device as point 11a, but rotated by 1800 degrees so that if point 11i is inserted in place of point 11 a, the first connection terminal 12 of the point will be connected to the fixed terminal 15 forming part of the support, while the second connection terminal 14 will be connected to the terminal 13 of the support
  • the points such as 11i, 11j ...
  • control signal generator 30 which has terminals 37 and 38 connected respectively to the output terminals 17 and 18 of the power supply source 16 so as to synchronize the signals of control on the half-periods of the alternating voltage of the supply, for example in 50 Hertz.
  • FIG. 3 gives the diagram of a light point for a large sign which is formed by six pairs of light-emitting diodes associated in series-parallel mounting, each pair containing two diodes of different color and mounted in antiparallel one with respect to the other.
  • the numerical references identical to those of FIG. 2 as well as the graphic conventions clearly show how the diodes of the same color are connected to the first and second connection terminals 12 and 14 of the light point while respecting a determined polarity.
  • Figure 4 shows the connection diagram of the light points of a variant of the sign of Figure 1. Indeed, according to Figure 4 , the light points 11 of the matrix of points are connected together in series along each line, which is supplied at its ends by the electric power source 16. Each line A, B, C ... of points comprises in series an electronic switch 25 as well as a current limiting impedance R. According to the variant of FIG. 4, where the control of the switches 25 has not been shown, a color scrolling can be obtained in the vertical direction, the background color of all the points of a line being identical at a given time at the difference of the point matrix of figure 1 where all the points of a column have the same background color at a given time and where the color scrolling is obtained in the lateral direction, from right to left or from left to right.
  • the set of points connected in series (line in the case of FIG. 4 and column in the case of FIG. 1) is designated by the expression "basic elementary figure" which groups a plurality of light points according to a configuration which is independent of the information to be displayed and whose supply is controlled by the effect of a single electronic switch.
  • basic elementary figure which groups a plurality of light points according to a configuration which is independent of the information to be displayed and whose supply is controlled by the effect of a single electronic switch.
  • other basic elementary figures than those indicated in the example can also be used, namely any regular grouping of consecutive points of the matrix.
  • connection between them, in series, of all the points of a basic elementary figure is advantageous in that it allows a power supply at low current and relatively high voltage, any other parallel or series connection- parallel is also possible.
  • FIGS. 5A to 5F represent different arrangements which can be used as controllable bidirectional electronic switches as they appear at 25a, 25b ... 25m in the diagram of FIG. 1.
  • FIG. 5A shows a triac of which the control electrode C1 is the trigger
  • FIG. 58 gives the circuit diagram of a bipolar transistor whose emitter-collector path is connected in the diagonal of a rectifier bridge to four diodes, the C1 control electrode is here the base of the transistor.
  • FIG. 5C indicates that a thyristor can also be used if its main current path is connected in the diagonal of a bridge with four diodes, the control electrode C1 being the trigger of the thyristor.
  • Figures 5D to 5F show the same arrangements as those shown in Figures 5A to 5C with the difference that the triac, the transistor or the thyristor are photocontrolled for example by means of a light-emitting control diode connected to the terminals C1 and C2 control.
  • FIG. 6 shows an example of a diagram of the control signal generator 30 for controlling the switches of a light sign in accordance with FIG. 1.
  • the electronic switch 25 which is a phototriac, is controlled from its terminals C, and C 2 .
  • Terminal C corresponding to the anode of the control diode is connected to a DC voltage source + V dc
  • terminal C 2 corresponding to the cathode of the control diode, receives the control signals from the generator 30 , on the one hand from an output terminal 301, via the resistor R2 and on the other hand from an output terminal 3 1 1 via the resistor R3.
  • the signals, active in the low state are only present on terminal 301 during the alternations of a first polarity, positive for example, of the alternating supply voltage, while that the signals from terminal 311, also active in the low state, can only be present during the alternations of second polarity, that is to say the negative alternations.
  • the resistors R2 and R3 essentially have the function of ensuring protection against possible current peaks, during the transient edges of the signals.
  • the control signal generator 30 comprises a first shift register 320 whose m outputs are connected to the m inputs of a set of buffer amplifiers 322 which comprises m output terminals 301, 302, 303 ... for controlling each of the switches electronic such as 25.
  • the number m of electronic switches corresponds to the number of columns of the point matrix, that is to say 72 columns.
  • the generator 30 also includes a second trigger register 330 which, similarly to the first register 320, is associated with a second set of buffer amplifiers 333 comprising m output terminals 311, 312,313 ...
  • the signal input terminal of the first shift register 320 can be momentarily connected to the + V DC by means of a push-button switch P.
  • the last output of this register, of rank m is connected to the signal input of the second shift register 330 while the output of row m of the latter is connected to the signal input of the first register 320, thus the two shift registers are connected in a ring as regards their inputs and outputs.
  • the clock input terminals of registers 320 and 330 are both combined at the output of a multivibrator 40 determining the movement of the colored background of the light sign.
  • the control signal generator also comprises a square signal generator 42 which receives on its terminals 37 and 38 the alternating voltage from the power source which delivers on the one hand on a terminal 47 square signals whose levels are compatible with the logic circuits associated and which are in phase with the alternating voltage and on the other hand on a terminal 48 of the similar signals, but in phase opposition with the preceding ones.
  • These signals respectively designated by Q and Gt on the connections connected to terminals 47 and 48, are respectively applied to the authorization terminals - (enable) of the sets of buffer amplifiers 322 and 333.
  • the buffer amplifiers used in the example are of the inverting type, they produce active signals at the low state at the output when at the input they are at the high state and the authorization input is activated. On the contrary, when the authorization input is not activated, the outputs of the buffer amplifiers are blocked in a high impedance state, independent of the state of the input signal. It follows that the signals contained in the shift register 320 will be transmitted to the outputs 301, 302, 303 ... only during the positive half-waves of the supply voltage under the control of the signal Q, while the signals contained in the trigger register 330 will only be transmitted to outputs 311, 312, 313 ... during negative half-waves, under the control of signal Q. Thus the control signals from the group of output terminals 301, 302, ...
  • the shift registers 320 and 330 are in the low state on all the stages and all the points of the matrix are therefore extinct.
  • a momentary pressure is applied to the switch P, a progressive series of columns of light points lights up in green background color at the speed of travel set by the multivibrator 40.
  • the first active signal is transferred, from the last stage of the shift register 320 on the first stage of the shift register 330, it is in red background color that the columns of light points gradually light up. If the switch P is released before the dot matrix is fully lit in green, the illuminated sign will display successive waves of green and red background waves, separated by non-luminous intervals. If, on the contrary, the switch P is released a little after a first complete lighting in green background color, the illuminated sign will show successive waves of green background color then red, separated by yellow-orange intervals .
  • FIG. 7 shows the block diagram of a generator of control signals different from that of FIG. 6 for a colored animation of the luminous sign according to successive and scrolling waves whose color gradually changes from green to red and vice versa. .
  • the control signal generator 50 comprises a single shift register 500 with m stages, the m outputs 501, 502 ... 50m of which control the successive electronic switches 55 of the m basic elementary figures which the matrix of light points comprises.
  • the electronic switches 55 are here of the transistor photocoupling type mounted in a diode bridge, type such as that shown in FIG. 5E.
  • the signal input 76 of the shift register 500 is connected to the output of a rectangular signal generator 77 whose frequency F is very slightly different from the frequency of the supply voltage.
  • the frequency F can be chosen at 50.05 Hz.
  • a voltage adjustable oscillator 78 is set to a frequency of 50 kHz.
  • a frequency divider 79 of ratio 1000, to the output of which is connected a phase comparator 60 comparing the phase of the signal obtained by division, with that of the alternating voltage of the power supply applied to terminal 61 The result of the comparison is applied in the form of a correction voltage to the adjustable oscillator 78 which is then locked in phase with the alternating voltage of the power supply.
  • Another frequency divider 62 receives the output signal from the oscillator 78 and outputs a signal N whose frequency is at all times in the ratio 1000/999 with the frequency of the supply voltage .
  • the signal N is then shaped, by a monostable rocker 63 delivering a rectangular signal M whose active slots, triggered by the short pulses of the signal N, have a duration of 8 ms for example and are separated by an interval of about 12 ms. Finally the signal M is applied to the signal input 76 of the shift register 500.
  • the signals coming from a multivibrator 66 operating at a frequency of 2 kHz are applied to its clock input 65, for example.
  • the matrix of light points which can be scanned in line or in columns, shows an almost continuous variation of background color whose basic cycle for a given point is accomplished in 20 seconds and which spreads out any time from green to red on 20 rows or columns.
  • other colored animations and rhythms can be obtained by modifying the values indicated in the example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Digital Computer Display Output (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
EP86200452A 1985-03-26 1986-03-20 Farbige Leuchtanzeigetafel zur Informationswiedergabe Expired - Lifetime EP0196709B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8504473A FR2579807B1 (fr) 1985-03-26 1985-03-26 Enseigne lumineuse coloree pour l'affichage d'informations
FR8504473 1985-03-26

Publications (2)

Publication Number Publication Date
EP0196709A1 true EP0196709A1 (de) 1986-10-08
EP0196709B1 EP0196709B1 (de) 1990-01-10

Family

ID=9317582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86200452A Expired - Lifetime EP0196709B1 (de) 1985-03-26 1986-03-20 Farbige Leuchtanzeigetafel zur Informationswiedergabe

Country Status (6)

Country Link
US (1) US4755807A (de)
EP (1) EP0196709B1 (de)
JP (1) JPH0664434B2 (de)
KR (1) KR940010784B1 (de)
DE (1) DE3668248D1 (de)
FR (1) FR2579807B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007249A1 (en) * 1987-03-20 1988-09-22 Colour Cells Pty. Ltd. Display with pseudo-colour pixels
FR2731829A1 (fr) * 1995-03-14 1996-09-20 Siab Societe Ind D Automatisat Dispositif lumineux d'identification et de reperage pour les facades accessibles d'appareils de distribution

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5122733A (en) 1986-01-15 1992-06-16 Karel Havel Variable color digital multimeter
US5561365A (en) 1986-07-07 1996-10-01 Karel Havel Digital color display system
US5187377A (en) * 1988-07-15 1993-02-16 Sharp Kabushiki Kaisha LED array for emitting light of multiple wavelengths
US5134387A (en) * 1989-11-06 1992-07-28 Texas Digital Systems, Inc. Multicolor display system
JP3808534B2 (ja) * 1996-02-09 2006-08-16 Ｔｄｋ株式会社 画像表示装置
US6069452A (en) * 1996-07-08 2000-05-30 Siemens Aktiengesellschaft Circuit configuration for signal transmitters with light-emitting diodes
MY124036A (en) 1999-07-08 2006-06-30 Nichia Corp Image display apparatus and its method of operation
US6414662B1 (en) * 1999-10-12 2002-07-02 Texas Digital Systems, Inc. Variable color complementary display device using anti-parallel light emitting diodes
JP3983037B2 (ja) * 2001-11-22 2007-09-26 株式会社半導体エネルギー研究所 発光装置およびその作製方法
JP2003345308A (ja) * 2002-05-29 2003-12-03 Pioneer Electronic Corp 表示パネル及び表示装置
US7462897B2 (en) * 2005-01-31 2008-12-09 Semiconductor Energy Laboratory Co., Ltd. Light emitting device and electronic device
JP5019194B2 (ja) * 2005-11-30 2012-09-05 株式会社ジャパンディスプレイセントラル 表示制御回路

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2207620A5 (de) * 1972-11-22 1974-06-14 Thomson Csf
US4271408A (en) * 1978-10-17 1981-06-02 Stanley Electric Co., Ltd. Colored-light emitting display
DE3029522A1 (de) * 1980-08-04 1982-03-04 Johann-Marius Dipl.-Ing. 8520 Erlangen Milosiu Matrix-anzeige mit aufnahmeeigenschaften mit konditioniereinrichtung fuer schwarz- weiss- oder farbbetrieb
FR2537752A1 (fr) * 1982-12-14 1984-06-15 Debailleul Daniel Procede de fabrication de voyants de tension a led pour tensions alternatives, en mono, bi ou tri-couleurs, sans consommation d'energie
GB2143985A (en) * 1983-07-26 1985-02-20 Ferranti Plc Two dimensional visual display
FR2569894A1 (fr) * 1984-09-04 1986-03-07 Radiotechnique Compelec Ensemble de visualisation a diodes electroluminescentes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321598A (en) * 1980-07-21 1982-03-23 The Singer Company Double density display drive system
US4488149A (en) * 1981-02-26 1984-12-11 Givens Jr William A Electronic display having segments wherein each segment is capable of selectively illuminating two colors
FR2520934B1 (fr) * 1982-01-29 1985-06-07 Radiotechnique Compelec Dispositif semi-conducteur emetteur de lumiere a multicristaux

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2207620A5 (de) * 1972-11-22 1974-06-14 Thomson Csf
US4271408A (en) * 1978-10-17 1981-06-02 Stanley Electric Co., Ltd. Colored-light emitting display
DE3029522A1 (de) * 1980-08-04 1982-03-04 Johann-Marius Dipl.-Ing. 8520 Erlangen Milosiu Matrix-anzeige mit aufnahmeeigenschaften mit konditioniereinrichtung fuer schwarz- weiss- oder farbbetrieb
FR2537752A1 (fr) * 1982-12-14 1984-06-15 Debailleul Daniel Procede de fabrication de voyants de tension a led pour tensions alternatives, en mono, bi ou tri-couleurs, sans consommation d'energie
GB2143985A (en) * 1983-07-26 1985-02-20 Ferranti Plc Two dimensional visual display
FR2569894A1 (fr) * 1984-09-04 1986-03-07 Radiotechnique Compelec Ensemble de visualisation a diodes electroluminescentes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NAVY TECHNICAL DISCLOSURE BULLETIN, vol. 2, no. 11, novembre 1977, pages 33-39; R.E. PAGE: "Digital logic monitor" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007249A1 (en) * 1987-03-20 1988-09-22 Colour Cells Pty. Ltd. Display with pseudo-colour pixels
FR2731829A1 (fr) * 1995-03-14 1996-09-20 Siab Societe Ind D Automatisat Dispositif lumineux d'identification et de reperage pour les facades accessibles d'appareils de distribution

Also Published As

Publication number Publication date
KR860007625A (ko) 1986-10-15
FR2579807B1 (fr) 1987-12-18
EP0196709B1 (de) 1990-01-10
DE3668248D1 (de) 1990-02-15
US4755807A (en) 1988-07-05
KR940010784B1 (ko) 1994-11-11
JPH0664434B2 (ja) 1994-08-22
FR2579807A1 (fr) 1986-10-03
JPS61223898A (ja) 1986-10-04

Similar Documents

Publication Publication Date Title
EP0196709B1 (de) Farbige Leuchtanzeigetafel zur Informationswiedergabe
FR3068819B1 (fr) Dispositif d'affichage a leds
EP0311500B1 (de) Halbton-Anzeigeverfahren für einen Matrix-Bildschirm
FR2604823A1 (fr) Dispositif emetteur d'electrons et son application notamment a la realisation d'ecrans plats de television
FR2542119A1 (fr) Procede pour commander un ecran d'affichage matriciel a cristaux liquides
FR2578705A1 (fr) Procede de formation d'elements de couleur a commande electronique et affichage en couleur base sur ce procede
JP2006284977A (ja) 液晶表示装置及びこれを用いた大型液晶表示装置
EP0278194B1 (de) Elektrolumineszenzanzeige mit Speichereffekt, gesteuert durch mehrfache phasenverschobene Auffrischspannungen
KR950021701A (ko) 광정보장치 및 그 제조방법
EP1771838B1 (de) Bildanzeigevorrichtung und steuerungsverfahren für die anzeigevorrichtung
FR2637717A1 (fr) Boite a lumiere pour dispositif de visualisation avionique
EP0210898B1 (de) Anzeigegerät mit einer Matrix von lumineszierenden Lichtquellen
FR2817992A1 (fr) Dispositif d'ecran video numerique
FR2750525A1 (fr) Procede d'activation des cellules d'un ecran de visualisation d'image, et dispositif de visualisation d'image mettant en oeuvre le procede
EP2104092B1 (de) Anzeigevorrichtung, die in einem Sondermodus zur Anzeige mit geringem Energieverbrauch betrieben werden kann
EP0105818A1 (de) Diodenanordnung
FR2569894A1 (fr) Ensemble de visualisation a diodes electroluminescentes
FR2570537A1 (fr) Procede de commande de l'affichage d'un graphisme sur un ensemble de diodes electroluminescentes et moyens de commande pour la mise en oeuvre du procede
FR2571573A1 (fr) Dispositif de reproduction d'images a liquide electroscopique convenant a la television
FR2458865A1 (fr) Elements de panneau lumineux et panneau utilisant de tels elements
FR2471015A1 (fr) Dispositif d'affichage lumineux
FR2571880A1 (fr) Structure a effets lumineux multiples et programmables
BE432729A (de)
EP0414598A1 (de) Plasmapaneelanzeigevorrichtung
EP3398410A1 (de) Optoelektronische schaltung mit leuchtdioden

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19870316

17Q First examination report despatched

Effective date: 19890314

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3668248

Country of ref document: DE

Date of ref document: 19900215

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940301

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940330

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940527

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950320

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950320

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19951130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19951201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST