EP0421517A1 - Dispositif de reproduction alpha-numérique - Google Patents

Dispositif de reproduction alpha-numérique Download PDF

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Publication number
EP0421517A1
EP0421517A1 EP90202542A EP90202542A EP0421517A1 EP 0421517 A1 EP0421517 A1 EP 0421517A1 EP 90202542 A EP90202542 A EP 90202542A EP 90202542 A EP90202542 A EP 90202542A EP 0421517 A1 EP0421517 A1 EP 0421517A1
Authority
EP
European Patent Office
Prior art keywords
segments
sub
electrode
display device
segment
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
EP90202542A
Other languages
German (de)
English (en)
Other versions
EP0421517B1 (fr
Inventor
Jacobus Johannes Van Almen
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.)
Koninklijke Philips NV
Original Assignee
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 Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0421517A1 publication Critical patent/EP0421517A1/fr
Application granted granted Critical
Publication of EP0421517B1 publication Critical patent/EP0421517B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/08—Fastening or securing by means not forming part of the material of the label itself
    • G09F3/18—Casings, frames or enclosures for labels

Definitions

  • the invention relates to a display device for displaying alpha-numerical characters, which device comprises an electro-optical material between a first supporting plate having at least one electrode and a second supporting plate having a plurality of electrode segments.
  • a display device of this type is known from United States Patent no. 3,781,864.
  • a liquid crystal display device is shown with a counterelectrode on the one supporting plate and 7 electrode segments for each character on the other supporting plate, and it describes the drive mode for such a display device.
  • Substantially only numerals are shown while using the so-called direct drive method.
  • a segment to be visualized is continuously driven, while the polarity of the drive voltage is periodically changed so as to prevent degradation of the liquid crystal. Therefore, a separate connection is required for each electrode segment.
  • a display device is characterized in that the electrode segments comprise sub-segments most of which are substantially square-shaped, rectangular or parallelogram-shaped and occupy at least a part of character elements arranged in the form of a matrix.
  • the second supporting plate preferably has at least twelve electrode segments and the square-shaped, rectangular or parallelogram-shaped sub-segments occupy the majority of the character elements.
  • Fig. 1 shows diagrammatically the division of the electrode segments 1, 2, 3, ...., 12 on one of the supporting plates of a display device.
  • the device also comprises a second supporting plate having one or more counterelectrodes (at most 4), while an electro-­optical material, for example, a liquid crystalline medium is present between the two supporting plates.
  • an electro-­optical material for example, a liquid crystalline medium is present between the two supporting plates.
  • the boundaries of the different electrode segments 1, 2, 3, ...., 12 are denoted by means of broken lines in Fig. 1.
  • the electrode segments are divided into sub-segments 21, 22, 23, which sub-segments are formed in such a way that they substantially entirely one of the character elements 30 on their own or together with other sub-segments in a matrix of character elements 30, occupy one of the character elements 30, as is shown in Fig. 2.
  • electrode segment 1 comprises three substantially square-shaped sub-segments 21 in this embodiment, which sub-segments correspond to the character elements 30 ab , 30 ac , 30 ad in Fig. 2.
  • Electrode segment 2 comprises four substantially square-­shaped sub-segments 21, which substantially entirely cover the character elements 30 bc , 30 cc , 30 ec and 30 fc , as well as a connection track 15 which connects the sub-segments 21 associated with the character elements 30 cc and 30 ec , and a triangular sub-segment 22 which together with a triangular sub-segment 22 associated with electrode segment 10 substantially entirely covers the character element 30 dc .
  • Electrode segment 3 comprises a triangular sub-segment 22 which together with a triangular sub-segment 22 associated with electrode segment 4 substantially entirely covers the character element 30 ae .
  • electrode segment 3 comprises two pentagonal sub-segments 23 at the location of the character elements 30 bd , 30 cd
  • electrode segment 4 further comprises two substantially square-shaped sub-segments 21 at the location of the character elements 30 be and 30 ce
  • electrode segment 5 comprises three substantially square-shaped sub-segments 21 and a triangular sub-­segment 22 which together with a triangular sub-segment 22 of electrode segment 6 again substantially entirely covers the character element 30 ge
  • electrode segment 6 further comprises two pentagonal sub-segments 23.
  • Electrode segment 7 comprises three substantially square-­shaped sub-segments 21.
  • the electrode segments 8 and 9 can be described similarly as the electrode segments 3 and 4.
  • the electrode segment 10 comprises two substantially square-shaped sub-segments 21.
  • the electrode segments 11 and 12 may be described similarly as the electrode segments 5 and 6.
  • the electrode segments have connection conductors 13 for external connections. If desired, the electrode segment 2 may be connected at two ends, which is shown diagrammatically by means of the dot-and-dash line 14.
  • the electrode segments can be driven directly or with a low multiplex degree (by means of a selection circuit which is not further described), a large viewing angle and a high contrast is obtained when using a liquid crystal display device.
  • a satisfactory display of alpha-numerical characters can be simultaneously obtained by means of the sub-division into sub-segments.
  • a plurality of characters has been shown in Fig. 3 for the purpose of illustration.
  • FIG. 4 Another division with fifteen electrode segments is shown in Fig. 4.
  • the electrode segments 1, 3, 4, 5, 6, 7, 8, 9, 11 and 12 are comparable to those in Fig. 1.
  • the device according to Fig. 4 now has electrode segments 16, 17, 18 each comprising one segment and occupying the character elements 30 db , 30 dc and 30 dd as well as the electrode segments 19 and 20.
  • Each electrode segment 19, 20 comprises two square-shaped sub-segments 21 at the location of the character elements 30 bc , 30 cc and 30 ec , 30 fc , respectively.
  • Fig. 5 shows a plurality of characters displayed by means of a sub-division of (sub-) segments according to Fig. 4.
  • the invention is of course not limited to the examples shown, but many other shapes, notably of the sub-segments 21, are possible, for example, rectangular or parallelogram shapes. Different distributions of the sub-segments over the electrode segments are alternatively possible.

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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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
EP90202542A 1989-09-28 1990-09-25 Dispositif de reproduction alpha-numérique Expired - Lifetime EP0421517B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8902412 1989-09-28
NL8902412A NL8902412A (nl) 1989-09-28 1989-09-28 Alfa-numerieke weergeefinrichting.

Publications (2)

Publication Number Publication Date
EP0421517A1 true EP0421517A1 (fr) 1991-04-10
EP0421517B1 EP0421517B1 (fr) 1995-08-23

Family

ID=19855366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90202542A Expired - Lifetime EP0421517B1 (fr) 1989-09-28 1990-09-25 Dispositif de reproduction alpha-numérique

Country Status (5)

Country Link
EP (1) EP0421517B1 (fr)
JP (1) JPH03138686A (fr)
KR (1) KR910006898A (fr)
DE (1) DE69021817T2 (fr)
NL (1) NL8902412A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588329A2 (fr) * 1992-09-18 1994-03-23 Pioneer Electronic Corporation Dispositif d'affichage avec une pluralité de pixels pour l'affichage de caractères
EP2887161A1 (fr) * 2013-12-23 2015-06-24 ETA SA Manufacture Horlogère Suisse Agencement d'électrodes pour un affichage digital

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146285A2 (fr) * 1983-12-16 1985-06-26 Vultron International Limited Panneau d'affichage électro-optique plan
DE3346630A1 (de) * 1983-12-23 1985-07-04 SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen Anzeigeeinrichtung, insbesondere fuer kraftfahrzeuge
EP0164152A2 (fr) * 1984-05-08 1985-12-11 Koninklijke Philips Electronics N.V. Dispositif d'affichage électro-optique
EP0180685A1 (fr) * 1984-09-11 1986-05-14 Ascom Autophon Ag Arrangement d'indication alphanumérique avec des segments commandés respectivement dans un état visible et invisible
EP0255158A2 (fr) * 1986-07-07 1988-02-03 Koninklijke Philips Electronics N.V. Dispositif d'affichage des données

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146285A2 (fr) * 1983-12-16 1985-06-26 Vultron International Limited Panneau d'affichage électro-optique plan
DE3346630A1 (de) * 1983-12-23 1985-07-04 SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen Anzeigeeinrichtung, insbesondere fuer kraftfahrzeuge
EP0164152A2 (fr) * 1984-05-08 1985-12-11 Koninklijke Philips Electronics N.V. Dispositif d'affichage électro-optique
EP0180685A1 (fr) * 1984-09-11 1986-05-14 Ascom Autophon Ag Arrangement d'indication alphanumérique avec des segments commandés respectivement dans un état visible et invisible
EP0255158A2 (fr) * 1986-07-07 1988-02-03 Koninklijke Philips Electronics N.V. Dispositif d'affichage des données

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588329A2 (fr) * 1992-09-18 1994-03-23 Pioneer Electronic Corporation Dispositif d'affichage avec une pluralité de pixels pour l'affichage de caractères
EP0588329A3 (en) * 1992-09-18 1994-09-07 Pioneer Electronic Corp Display with a plurality of pixels for displaying characters
US5475516A (en) * 1992-09-18 1995-12-12 Pioneer Electronic Corp. Alphanumeric symbol formed by a 3×5 matrix with two longitudinally bisected pixels
EP2887161A1 (fr) * 2013-12-23 2015-06-24 ETA SA Manufacture Horlogère Suisse Agencement d'électrodes pour un affichage digital
KR20150073843A (ko) * 2013-12-23 2015-07-01 에타 쏘시에떼 아노님 마누팍투레 홀로게레 스위세 디지털 디스플레이에 대한 전극들의 배열체
KR101648639B1 (ko) 2013-12-23 2016-08-16 에타 쏘시에떼 아노님 마누팍투레 홀로게레 스위세 디지털 디스플레이에 대한 전극들의 배열체
US9897977B2 (en) 2013-12-23 2018-02-20 Eta Sa Manufacture Horlogère Suisse Arrangement of electrodes for a digital display

Also Published As

Publication number Publication date
KR910006898A (ko) 1991-04-30
JPH03138686A (ja) 1991-06-13
DE69021817D1 (de) 1995-09-28
EP0421517B1 (fr) 1995-08-23
NL8902412A (nl) 1991-04-16
DE69021817T2 (de) 1996-04-04

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