EP0456783B2 - Dispositif electronique d'affichage - Google Patents
Dispositif electronique d'affichage Download PDFInfo
- Publication number
- EP0456783B2 EP0456783B2 EP90917024A EP90917024A EP0456783B2 EP 0456783 B2 EP0456783 B2 EP 0456783B2 EP 90917024 A EP90917024 A EP 90917024A EP 90917024 A EP90917024 A EP 90917024A EP 0456783 B2 EP0456783 B2 EP 0456783B2
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- Prior art keywords
- mosaic
- characters
- patterns
- separation
- bands
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Classifications
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- 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
- G09F9/302—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 characterised by the form or geometrical disposition of the individual elements
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- 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
Definitions
- the invention relates to an electronic display device intended to visualize particular signs, such that in particular alphanumeric characters.
- the active display means is consisting of one or more elements whose characteristics optics may vary depending on a signal electric excitation, selectively controlled by a electronic control circuit.
- the invention may apply, in some of its characteristics, for example to a display device comprising a set of light emitting diodes plus generally referred to by the British abbreviation "LED" or any other responding display device to the definition above.
- an electronic device display comprising a set of modules which are respectively constituted either by the electrodes a liquid crystal cell, either by light-emitting diodes, and which have the form of segments of straight adjacent and at the end, in lines and by columns.
- this device does not give complete satisfaction, since it only displays characters "in sticks", that is to say in the form of contiguous lines.
- patent application EP 0 146 285 describes a display device of another type, that is to say structured essentially in the form of a matrix of points, with n rows and p columns (n being equal to 5 and p equal to 3, in this example).
- the pixels of this matrix i.e. the patterns the most basic which each form an electrode individually addressable, have been changed from to the pixels of the most conventional point matrices, only for the purpose of increasing resolution. So the designers of this matrix, while wanting imperatively preserve the qualities of the matrices low order (typically 5x3), tried to increase the number of pixels. At that time, they are therefore quite naturally started from a classic matrix form, comprising rectangular pixels, and in particular squares, by definition all identical and distributed by homogeneously. The goal they had set led them to divide said pixels into four by almost cutting them all almost identically, using two diagonals.
- the resulting structure therefore essentially consists of several repeated groups, composed each of four isosceles triangles. By observing the outline or envelope of these groups, we find the appearance of the original rectangles whose union constitutes the grid or grid of the matrix.
- the device proposed in this patent application responds to the concern to increase resolution of matrix type display devices by increasing the number of pixels, we understand that it is very limited. Indeed, users, and therefore buyers of these devices are looking for now the most aesthetic characters possible, close to a particular type or personalized writing.
- Patent application EP 0 180 685 in particular in its last embodiment partially responds to this problem by providing a device a different design.
- the primary goal is to improve the aesthetics of the characters, the designers of this device no longer started from an imposed scheme of electrodes, but the result to be obtained, namely letters and numbers themselves to only then conform the electrodes.
- This type of device is called “mosaic” because of its composite-looking structure, formed of numerous pixels with heterogeneous contours (rounded, rectilinear, in angle, ...), but complementary and in agreement, overlapping each other.
- This type of device akin to the arrangement of pieces of glass tinted as found in the old stained glass windows of places of worship, especially in the West.
- This device has major drawbacks.
- each elementary motif being constituted by an electrode which is electrically isolated from neighboring electrodes, it is necessary to connect by a own electrical connection to the system control electronics.
- connections are formed by tracks which are structured, like the electrodes. by a process photolithographic on a substrate covered with a layer conductive and they are therefore susceptible to vary the optical characteristics of the crystal liquid between them and part of the counter electrode. We therefore understand that these connections may appear on the cell, at the same time time as the alphanumeric characters displayed, this which again contributes to deteriorating the quality of display.
- the device according to this request EP 0 180 685 although providing a marked improvement in the appearance of the characters is still very limited since it does not allow the display of lowercase letters. It also has the essential disadvantage of having to be sized according to the dimension of numbers and letters to display. This dimension is therefore frozen and it can only be modified by the change of the device already installed in favor of a other, of different size.
- GB-A-2 151 832 describes a display device to matrix.
- the object of the present invention is therefore to respond to these disadvantages by providing a device advanced display capable of viewing characters much more stylized, for example close Helvetica Halbfett character, excellent definition (aesthetic), free from defects of the type mentioned above. but in which we can minimize the number of pixels to obtain a cost price not high.
- the present invention also aims to provide a display device to address the problem character sizing at a cost of even as low as possible.
- the subject of the invention is an electronic device display according to claim 1.
- a liquid crystal cell which forms the active display means of the device according to the invention, this cell 1 comprising, in known manner, a front blade 2 and a blade rear 3 transparent and joined together by a frame 4.
- the sealing frame 4 defines a sealed volume in which a mixture is trapped 5 composed of a liquid crystal and, for example, a dichroic dye.
- the front 2 and rear 3 blades which form the substrate bear on their internal face respectively electrodes 6a and a counter electrode 6b, the latter which are transparent being constituted for example by a mixture of indium / tin oxide.
- the front blades 2 and rear 3 generally wear the same a dielectric layer and an alignment layer which are not shown here.
- the electrodes 6a as well as the counter electrode 6b have electrical connections which are, like the latter, structured by a process photolithographic on blades 2 and 3, these connections which are not shown here, being respectively connected to an electronic circuit of command not shown.
- cell 1 also has an element 7 reflector-diffuser or transflector type, depending on the desired display mode.
- the known devices currently on the market have electrodes 6a cut out and arranged in order to be able to display relatively aesthetic characters.
- a technique consists in cutting the counter-electrode 6b so particular so that no part of this counter electrode either next to an electrical connection 11.
- each elementary motif having its own electrical connection coming out in free space left on the substrate, between this motif and the neighboring motif it is easy to understand that the design of the counter-electrode 6b is all the more complicated, and that the latter is therefore all the more expensive.
- connection 11 As shown in Figure 2a, another solution consists in dividing each connection 11 into several branches 11a, these branches which are thinner being by therefore much less visible, at least from from a certain distance.
- the arrangement of elementary patterns to pixels according to the invention responds well to the definition of mosaic, and in particular of composite mosaic, since we note that these patterns have heterogeneous contours and complementary, namely rounded, rectilinear or oblique with indifferent combinations, these patterns being arranged in concordance to overlap into each other, similarly to a puzzle. Note that all of these patterns are arranged irregularly and disorderly without any repetition systematic of rows or columns, in a direction or in another.
- the elementary patterns m 1 to m n of the mosaics of FIGS. 3 and 6 are shaped and are associated with one another so that the device according to the invention can display a whole range of alphanumeric characters, such as the letters of the Latin alphabet in upper and lower case, some of the letters used in European languages such as Germanic or Nordic languages, as well as the numbers 0 to 9, all these characters can be associated with their respective accentuation, including understood the underlines.
- each mosaic of these two embodiments is shaped to be able to display characters close to the "Helvetica Halbfett" style.
- the mosaic M of elementary patterns m 1-n makes it possible to display all the punctuation marks so that the combination of several mosaics M together, juxtaposed or superimposed in modules, allows the display of intelligible messages, made up as structured sentences or as a group of coded words.
- the groups of patterns G 1-n are arranged in rows L1 to L6 and in columns C1 to C5.
- the isolated elementary patterns m 1 , m 2 and m 3 allow the accentuation of Germanic and Nordic characters.
- the elementary patterns m 1 and m 3 are aligned and are respectively provided in the extension of the columns C1 and C5.
- the elementary pattern m 2 which has the appearance of a substantially rectangular ring is disposed substantially below the elementary patterns m 1 and m 3 and facing the central column C3.
- Lines L1 to L6 of groups G 1 to G n delimit at least three characteristic zones A, B and C respectively, a last zone D forming the abovementioned accentuations.
- Zone A is the viewing or materialization zone of a first size of capital letters, while that area B is the lower case viewing area.
- Zone C is the zone allowing in particular display of end of legs and display underlines, areas A, B and C each counting five columns properly aligned.
- Zones A and B advantageously comprise in the first embodiment of Figure 3, respectively five and three lines of characteristic groups, this choice of odd numbers of lines allowing displaying letters or numbers such as "B", "3" or “8" whose hollowed parts 20 are centered by compared to a horizontal crossbar 22, like this is particularly shown in Figures 4g to 4i.
- the spacing distance Y which separates each elementary pattern (for example the pattern m 4 ) from the adjacent pattern (s), in this case the patterns m 5 to m 7 is low, i.e. of the order of 10.10 -6 meters (10 ⁇ m) to 50.10 -6 meters (50 ⁇ m).
- the essential function of this distance is to electrically isolate the neighboring patterns and it forms on the mosaic the width of the insulation spaces Es which separate the patterns between them.
- the patterns in each group are therefore arranged relative to each other very closely, and seem, even at a small distance, contiguous to each other. As can be seen in the letters and numbers in Figures 4a to 4k, this distance of separation Y does not appear in the characters displayed.
- each group G 1 -n is formed by at least two elementary patterns joined together and separated from each other, at least in part, by an isolation space Es.
- the spacing distance Y is chosen as low as possible given the conditions feasibility and the chosen yield.
- each group of patterns at least in zones A and B has a spacing interval rectilinear.
- each characteristic group G 1 to G n is separated from the neighboring group or groups by separation bands b 1-n , each separation band being in fact provided, in the case of a liquid crystal cell, by l absence of a conductive layer on the substrate between the electrodes 6a of the neighboring groups; this substrate being constituted by the blade 2.
- the separation strips b 1 to b n preferably all have the same width X, this width preferably being of the order of 1.2 ⁇ 10 -3 meters (1.2 mm). Typically, it is chosen equal to 1.5.10 -3 meters (1.5 mm).
- the value X that is to say the width of the separation bands which form the different characteristic groups G 1 to G n , is in any case clearly greater than the value Y which is the width of the interval or isolation space Es left between the adjacent elementary patterns in the same group.
- the value X is chosen between 25 and 120 times greater than the value Y.
- the distance of spacing Y is chosen to be less than 100 ⁇ 10 -6 meters (100 ⁇ m).
- the mosaic according to the invention presents a chopped structure such as separation strips between two adjacent groups have always a width X which is greater than the distance spacing Y left between the patterns of these groups.
- all of the patterns elementary are organized in groups; namely brought together two at two, at least partly at the edge of the hug.
- the mosaic comprising 152 patterns elementary, only 5 of them being isolated, we can determine that throughout the mosaic, approximately 97% of the elementary patterns are organized in groups.
- the separation strips b 1 to b n constitute optically passive regions and form, between the groups G 1 to G n , preferential passages of the electrical connection elements 30, from the elementary patterns m 1-n to the periphery of the means d display, as shown in Figure 3b.
- the mosaic M namely the arrangement of the different elementary patterns m 1-n therebetween, is provided in such a way that at most four separation bands b 1-n intersect on or in the active means d 'display.
- the separation bands b 1-n at least 'at their point of intersection I ( Figure 3a), are angularly offset from each other by an angle a greater than 60 degrees.
- this angle a corresponds to that from from which the appearance of faults, as they will be defined below, begins to decrease significantly.
- the angle ⁇ is at most equal to 90 degrees.
- the outer contour of each group of patterns G 1-n is substantially rectilinear, this contour preferably being substantially rectangular.
- the bands b 1-n are in fact formed by continuous partitions or cutouts S 1 to S n which are formed on the major part of the display means, these continuous partitions S 1 to S n passing through the mosaic from start to finish. to open its lateral edges respectively right and left, and its upper and lower edges. This is particularly true in areas A, B and C for vertical partitions S 1 to S 4 , and in areas A and B for horizontal partitions S 5 to S 8 .
- the separation bands b 1 to b n and the continuous separations or cutouts S 1 to S n are organized perpendicular or parallel to the direction of reading L of the characters on the mosaic.
- the continuous partitions or cutouts S 1 to S 7 and the separation strips which they form can be defined as being oriented in essentially vertical and horizontal directions.
- the display device according to the invention allows in particular to eliminate faults such as points or 10 marks that appear on the displayed characters by currently known devices.
- Figure 2a shows in detail the arrangement of the elementary patterns of a device known display.
- the defects can be geometrically represented as an arc of a circle or a circle of radius R1, the circle being tangent to the ends or points of the various elementary patterns which converge towards the point of intersection i .
- the radius R1 is already greater than the spacing distance a which is left between the different elementary patterns.
- the circle envelopes the point of intersection I at the level of the separation strips for example b13, b18, b19 and b20, has a radius r 1 of a value less than the width X of the separation strips b 13,18-20 .
- the envelope circle does not appear at a short distance and no longer forms a defect, since it is no longer preponderant with respect to the width of the separation bands b 1-n .
- the envelope circle of the point of intersection I has a radius r 2 of value substantially equal to the width X of the separation strips b 1-n .
- the definition of the characters and the readability are improved when the separation bands b 1-n and more particularly the continuous separations or cuts S 1 to S n which form the hash of the mosaic are oriented parallel and / or perpendicular to the reading direction of the displayed characters, the mosaic M being oriented over a whole panel display assembly, in the direction in which it is represented in FIG. 3, namely vertically.
- this mosaic M offers, thanks to its configuration, an aesthetic characteristic appreciable in that the accentuation elements of the lower case letters (see figures 4d to 4f) are arranged in the zone A for viewing or materializing capital letters. So the lowercase accent elements are practically attached to these tiny like this is also provided for in the different alphabets, such as the Latin alphabet.
- the arrangement in groups of elementary patterns Like the addition of elementary patterns additional within the same group is made possible thanks to the almost contiguous layout elementary patterns in this group the elements are not distinguishable in the body an uppercase alphanumeric character that uses this group to be viewed, as shown in the characters Figures 4d to 4f.
- the separation bands b 1-n and therefore the continuous separations or cuts S 1 to S n are arranged so that their points of intersection I lie outside the regions of materialization of the branches of the characters , which appear vertically or horizontally.
- the mosaic according to this embodiment comprises four continuous partitions or vertical cuts oriented perpendicular to the reading direction L, as well as three continuous separations or cuts S5 to S7 oriented parallel to reading direction L, i.e. defined as horizontal.
- the seven continuous partitions or cutouts which form the hash of the mosaic M have a width X, of a value equal to those mentioned above.
- FIG 7 there is shown a basic frame T 1 , called the first frame, which constitutes the starting structure of the mosaic according to the invention.
- This basic frame T 1 is intended to form the area B which allows the display of lowercase letters, as well as the display of a first set of small numbers.
- this basic frame T 1 has been partially reproduced, in particular its upper part referenced T 2 has been reproduced.
- the dashed line L C represents the upper part of the base frame T 1 which has been reproduced and then "glued" above the base frame T 1 .
- the cutting line L C to duplicate the base frame, has been positioned so that after joining the two frames T 1 and T 2 the oblique isolation spaces come into concordance, which will subsequently allow the display of characters of different dimensions, inside a single mosaic.
- the cutting line L C has been positioned at the intersection of the insulation space Es oriented obliquely.
- the resulting frame T 3 is chopped by the continuous separations or cuts S 1 to S n , arranged in the orientation explained above.
- the continuous separations or cutouts then completely compartmentalize the resulting frame T 3 since they cross most of the mosaic according to the invention and thus form different groups of elementary patterns in the mosaic.
- the partitions or cutouts S 1 to S 7 partially cover certain elementary patterns of the frame T 3 .
- these optically passive partitions or cutouts are arranged so that they completely overlap and mask the elementary patterns of smaller areas, which have been blackened in FIG. 9 for a better representation of the drawings. Since these strip separations or cutouts S 1 to S 7 are optically passive and correspond to an absence of electrode surface, the elementary patterns of smaller surface are eliminated and no longer need to be associated with an addressing which poses problems both in terms of electronics and in terms of electrical connections.
- the mosaic according to the invention comprises at least two horizontal partitions or cutouts referenced S 5 and S 6 , and which are very advantageously placed in the vicinity of zones in which the density of the elementary patterns is the greatest. These areas are referenced respectively 100 and 120.
- these partitions or cutouts S 5 and S 6 are located tangentially to these areas 100 and 120 of high density of elementary patterns.
- the two horizontal separations or cutouts S 5 and S 6 are arranged on either side of a line of groups of pixels L 4 which is intended to form, as will be seen in the following figures, an intermediate horizontal bar for the formation of lowercase letters. Precisely, these partitions or cutouts S 5 and S 6 are arranged tangentially to this line L 4 and to this intermediate bar.
- this mosaic therefore comprises a third separation or horizontal cut S 7 which is arranged tangentially to the line L 3 which forms the group of patterns intended in particular to display an upper horizontal bar of the lower case letters.
- this separation or cut S 7 is placed directly above the line L 3 .
- the separation into vertical strips or cuts it will be specified that at least two of them, namely the separations S 1 and S 4 are positioned tangentially to regions or columns C 1 and C 5 of the mosaic which are intended in particular to form jambs of letters.
- the device according to the invention comprises four continuous partitions or cuts which are arranged perpendicular to the direction of reading, these four partitions or cuts respectively defining between them the five columns C 1 to C 5 , among which the columns C 1 , C 3 and C 5 respectively constitute lateral and central columns for forming the legs.
- these central columns C 3 and lateral columns C 1 , C 5 have equal widths.
- these three columns C 1 , C 3 and C 5 for forming the legs are separated two by two by intermediate columns C 2 and C 4 which are of equal width between them but of a width less than that of the three columns C 1 , C 3 and C 5 .
- FIG. 10 represents a chopped weft T 4 which is the result of the operation of FIG. 9 and to which we will then add isolation spaces Es to form in particular the accents, the jambs or the roundings of certain alphanumeric characters.
- the mosaic according to the invention has four zones display of alphanumeric characters of different size.
- the mosaic according to the invention comprises a first display area A which corresponds to the formation of alphanumeric characters of medium size, and in particular to the formation of a first set of capital letters and numbers (FIGS. 11-18 ).
- This first zone A uses all the columns and the rows of the mosaic, with the exception of the last L 6 which corresponds to the zone C for forming the end of the jamb of the large letters and for forming the underscores.
- This mosaic has a second zone E intended to allow the display of alphanumeric characters large sizes, i.e. large capital letters and big numbers. The letters displayed are visible in Figures 19 to 26.
- zone E uses all the available surface of the mosaic, zone A being therefore included in zone E.
- the third characteristic display area of this mosaic is area B which is intended to allow basically the display of small numbers, in a first position as will be explained below, and lowercase.
- the lower case letters use for some letterheads and jambs some of zone A and part of zone C. So, this zone B is included in zone A and is arranged directly above the underline C.
- the mosaic according to the invention further comprises a fourth zone F which allows the display of small numbers, but which have a position different from those displayed by zone B, namely substantially higher.
- Zone F is nested inside the zone B which together and in superposition constitute the zone A.
- the characters that can be displayed using this zone F are shown in Figures 35 to 38.
- this mosaic has at least two characteristic areas for character format from the same family (numbers, capital letters or tiny) but different sizes. More precisely, it has at least two characteristic areas A, B for the formation of figures of different sizes. Even more precisely, it includes three characteristic zones A, B, E for training of figures comprising three different sizes, namely large, medium and small.
- the invention can be applied to an electronic display device with a low rate of multiplexing, i.e. in which certain patterns are connected to each other electrically, corresponding to the multiplex rate.
- the counter electrode 6b must have regions electrically isolated from each other and provided their own electrical connection, and no longer be a single piece (continue), as it is for the counter electrode shown in Figure 5.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Description
- la figure 1 représente, de façon schématique et en coupe transversale, une cellule à cristal liquide d'un type classique formant, à titre d'exemple, le moyen actif d'affichage du dispositif selon l'invention,
- la figure 2 représente l'un des caractères alphanumériques affichés par un dispositif antérieur, cette figure mettant en évidence les défauts de ce type de caractère,
- la figure 2a est une vue très agrandie de l'arrangement des motifs élémentaires, pris au niveau du défaut 10 de la figure 2,
- la figure 3 est une vue de dessus d'une mosaïque selon un premier mode de réalisation, destinée à équiper le dispositif d'affichage selon l'invention, les motifs de cette mosaïque étant dans cet exemple constitués par des électrodes d'une cellule, telle que celle représentée à la figure 1,
- la figure 3a est une vue agrandie de la région Illa de la figure 3,
- la figure 3b est une vue similaire à la figure 3, mais représentant les différents motifs élémentaires de la mosaïque associés à leur connexion électrique,
- les figures 4a à 4k représentent respectivement certains des caractères alphanumériques susceptibles d'être affichés par l'intermédiaire de la mosaïque selon le premier mode de réalisation, et
- la figure 5 représente en vue de dessus une contre-électrode selon l'invention,
- la figure 6 est une vue de dessus d'une mosaïque selon un deuxième mode de réalisation de l'invention,
- la figure 7 est une vue de dessus d'une trame de base destinée à former une mosaïque telle que représentée aux figures 3 et 6, et correspondant à la première étape de réalisation de cette mosaïque,
- la figure 8 est une vue de dessus d'une deuxième étape de fabrication de ladite mosaïque, comportant la trame de base de la figure 7 associée à une trame additionnelle,
- la figure 9 représente une troisième étape de fabrication de la mosaïque de la figure 6, dans laquelle les régions noircies correspondent à des séparations continues ou découpes disposées sur la mosaïque pour la hacher,
- la figure 10 représente la trame obtenue après l'étape représentée à la figure 9; et
- les figures 11 à 38 représentent des caractère alphanumériques qui peuvent être affichés notamment grâce à la mosaïque de la figure 6.
Claims (23)
- Dispositif électronique d'affichage, du type comprenant :au moins un moyen électro-optique d'affichage (1),des motifs élémentaires (m1 à mn) associés audit moyen électro-optique d'affichage (1), ces motifs élémentaires (m1 à mn) étant pour la majeure partie conformés, à partir d'une série de caractères alphanumériques stylisés et choisis, sous la forme d'une structure composite en mosaïque dont la trame est formée par lesdits motifs qui présentent des contours hétérogènes et complémentaires, disposés en concordance pour s'imbriquer les uns dans les autres, de façon similaire à un puzzle, ces motifs élémentaires formant des lignes (L1 à L6) et des colonnes (C1 à C5) délimitant des zones d'écriture caractéristiques (A, B) pour l'affichage de lettres ou de chiffres, caractérisé en ce que lesdits motifs élémentaires (m1 à mn) sont agencés dans lesdites zones d'écriture (A, B) en groupes distincts (G1 à Gn) dans lesquels ces motifs (m1 à mn) sont disposés entre eux à la limite de l'accolement et sont séparés par une distance d'écartement (Y), prévue pour assurer l'isolation électrique de ces motifs l'un par rapport à l'autre, chaque groupe de motifs (G1 à Gn) étant séparé du ou des groupes voisins par des bandes de séparation (b1 - bn) optiquement passives présentant une largeur (X) nettement supérieure à la distance d'écartement (Y), et en ce que ladite mosaïque comporte au moins une trame de base (T1), qui couvre une première zone caractéristique (B) pour l'affichage de caractères dans une première taille et qui est partiellement dupliquée en une trame additionnelle (T2) pour former une trame résultante (T3) apte à afficher lesdits caractères dans une seconde taille dans une zone caractéristique différente (A).
- Dispositif selon la revendication 1, caractérisé en ce que les bandes de séparation (b1 - bn) présentent une largeur (X) au moins quinze fois supérieure à la distance d'écartement (Y).
- Dispositif selon la revendication 2, caractérisé en ce ladite largeur (X) est typiquement trente fois supérieure à la distance d'écartement (Y).
- Dispositif selon la revendication 3, caractérisé en ce que la distance d'écartement (Y) est inférieure à 100 µm.
- Dispositif selon la revendication 4, caractérisé en ce que la distance d'écartement (Y) est choisie égale à 50 µm.
- Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que les bandes de séparation sont conformées et sont prévues sur la mosaïque en des positions telles que certaines de ces bandes chevauchent et masquent des motifs élémentaires de petite surface, définis par les contours des caractères à afficher, pour les éliminer de ladite mosaïque.
- Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que les bandes de séparation (b1-bn) sont rectilignes et sont toutes positionnées uniquement perpendiculairement ou parallèlement au sens de lecture des caractères sur le dispositif.
- Dispositif selon la revendication 7, caractérisé en ce qu'il comporte au moins deux bandes de séparation (S1-S4) positionnées respectivement de façon tangente à des régions de la mosaïque, destinées à former notamment des jambages de lettres.
- Dispositif selon la revendication 7 ou 8, caractérisé en ce qu'il comporte quatre bandes de séparation continues (S1-S4) disposées perpendiculairement au sens de lecture, ces quatre bandes définissant respectivement entre elles cinq colonnes (C1-C5), dites verticales, dont trois (C1, C3, C5) constituent respectivement des colonnes latérales et centrale de formation des jambages.
- Dispositif selon la revendication 9, caractérisé en ce que les trois colonnes verticales (C1, C3, C5) de formation des jambages présentent des largeurs égales.
- Dispositif selon la revendication 10, caractérisé en ce que les trois colonnes (C1, C3, C5) de formation des jambages sont séparées deux à deux par des colonnes intermédiaires (C2, C4) qui sont de largeurs égales entre elles mais d'une largeur inférieure à celle desdites trois colonnes.
- Dispositif selon l'une des revendications 7 à 11, caractérisé en ce que les bandes de séparation s'étendent sur toute la mosaïque et débouchent à ses bords.
- Dispositif selon la revendication 7, caractérisé en ce qu'il comporte au moins deux bandes de séparation (S5-S7) dites horizontales, s'étendant parallèlement au sens de lecture des caractères.
- Dispositif selon la revendication 13, caractérisé en ce que les deux bandes de séparation horizontales (S5, S6) sont disposées au voisinage de zones dans lesquelles la densité de motifs élémentaires est la plus grande.
- Dispositif selon la revendication 14, caractérisé en ce que lesdites bandes de séparation horizontales (S5, S6) sont situées de façon tangente auxdites zones de grande densité.
- Dispositif selon la revendication 13, caractérisé en ce que les deux bandes de séparation (S5, S6) sont disposées de part et d'autre d'une barre horizontale intermédiaire destinée à la formation de lettres minuscules, et de façon tangente à cette barre.
- Dispositif selon la revendication 16, caractérisé en ce qu'il comporte une troisième bande de séparation (S7) qui est disposée de façon tangente à une barre horizontale supérieure des minuscules, directement au-dessus de celle-ci.
- Dispositif selon l'une des revendications précédentes, caractérisé en ce que les bandes de séparation (b1-bn) sont disposées de telle sorte que leurs intersections se trouvent en dehors des branches verticales et horizontales des caractères.
- Dispositif selon l'une des revendications précédentes, caractérisé en ce que ladite mosaïque comporte au moins deux zones caractéristiques (A, E; A, B, E) pour la formation de caractères d'une même famille mais de tailles différentes.
- Dispositif selon la revendication 1 ou 19, caractérisé en ce que ladite mosaïque comporte au moins deux zones caractéristiques (A, B) pour la formation de chiffres de tailles différentes.
- Dispositif selon la revendication 20, caractérisé en ce que ladite mosaïque comporte trois zones caractéristiques (A, B, E) pour la formation de chiffres présentant trois tailles différentes.
- Dispositif selon la revendication 1, caractérisé en ce que ladite mosaïque comporte une zone caractéristique d'affichage (F) pour la formation de chiffres sur des niveaux respectivement supérieurs et inférieurs, dans le dispositif.
- Dispositif selon la revendication 1, caractérisé en ce que ladite trame additionnelle (T2) est disposée au-dessus de la trame de base (T1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9018143U DE9018143U1 (de) | 1989-11-27 | 1990-11-26 | Elektronische Anzeigevorrichtung |
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH424389 | 1989-11-27 | ||
CH4243/89 | 1989-11-27 | ||
CH424389 | 1989-11-27 | ||
FR8916864A FR2656144A1 (fr) | 1989-12-18 | 1989-12-18 | Dispositif electronique d'affichage. |
FR8916864 | 1989-12-18 | ||
CH3610/90 | 1990-11-12 | ||
CH361090 | 1990-11-12 | ||
CH03610/90A CH696342A5 (fr) | 1990-11-12 | 1990-11-12 | Dispositif électronique d'affichage. |
PCT/CH1990/000270 WO1991008563A2 (fr) | 1989-11-27 | 1990-11-26 | Dispositif electronique d'affichage |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0456783A1 EP0456783A1 (fr) | 1991-11-21 |
EP0456783B1 EP0456783B1 (fr) | 1996-07-03 |
EP0456783B2 true EP0456783B2 (fr) | 2001-02-07 |
Family
ID=27174427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90917024A Expired - Lifetime EP0456783B2 (fr) | 1989-11-27 | 1990-11-26 | Dispositif electronique d'affichage |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0456783B2 (fr) |
JP (1) | JPH04505814A (fr) |
KR (1) | KR0169981B1 (fr) |
DE (1) | DE69027671C5 (fr) |
ES (1) | ES2091250T5 (fr) |
WO (1) | WO1991008563A2 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE503357C2 (sv) * | 1994-09-01 | 1996-05-28 | Touch Display Systems Ab | Anordning för åstadkommande av display o dyl |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2151832A (en) † | 1983-12-16 | 1985-07-24 | Standard Telephones Cables Ltd | Electro optic flat panel display |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR588406A (fr) * | 1924-01-04 | 1925-05-07 | Tableau translucide présentant par transparence des inscriptions changeantes commandées à distance | |
CH631564A5 (en) * | 1979-08-16 | 1982-08-13 | Ebauches Sa | Alphanumeric display grid for upper and lower case |
CH661373A5 (de) * | 1984-09-11 | 1987-07-15 | Autophon Ag | Alphanumerische anzeigeanlage mit in je einen sichtbaren und einen unsichtbaren zustand steuerbaren segmenten. |
US4794390A (en) * | 1986-03-10 | 1988-12-27 | Lippman Jeffrey H | Alphanumeric display means |
EP0255158A3 (fr) * | 1986-07-07 | 1989-09-27 | Koninklijke Philips Electronics N.V. | Dispositif d'affichage des données |
DE3816550A1 (de) * | 1988-05-11 | 1989-11-23 | Krone Ag | Elektrooptische flachanzeigetafel fuer alphanumerische zeichen |
-
1990
- 1990-11-26 EP EP90917024A patent/EP0456783B2/fr not_active Expired - Lifetime
- 1990-11-26 JP JP2515732A patent/JPH04505814A/ja active Pending
- 1990-11-26 ES ES90917024T patent/ES2091250T5/es not_active Expired - Lifetime
- 1990-11-26 WO PCT/CH1990/000270 patent/WO1991008563A2/fr active IP Right Grant
- 1990-11-26 DE DE69027671T patent/DE69027671C5/de not_active Expired - Lifetime
- 1990-11-26 KR KR1019910700786A patent/KR0169981B1/ko not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2151832A (en) † | 1983-12-16 | 1985-07-24 | Standard Telephones Cables Ltd | Electro optic flat panel display |
Also Published As
Publication number | Publication date |
---|---|
DE69027671T3 (de) | 2001-09-20 |
ES2091250T5 (es) | 2001-08-01 |
WO1991008563A3 (fr) | 1991-09-19 |
DE69027671C5 (de) | 2006-09-07 |
DE69027671D1 (de) | 1996-08-08 |
WO1991008563A2 (fr) | 1991-06-13 |
ES2091250T3 (es) | 1996-11-01 |
EP0456783A1 (fr) | 1991-11-21 |
KR0169981B1 (ko) | 1999-01-15 |
DE69027671T2 (de) | 1997-02-13 |
KR920701935A (ko) | 1992-08-12 |
JPH04505814A (ja) | 1992-10-08 |
EP0456783B1 (fr) | 1996-07-03 |
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