EP0065044A1 - Dispositif d'affichage électronique - Google Patents

Dispositif d'affichage électronique Download PDF

Info

Publication number
EP0065044A1
EP0065044A1 EP81302209A EP81302209A EP0065044A1 EP 0065044 A1 EP0065044 A1 EP 0065044A1 EP 81302209 A EP81302209 A EP 81302209A EP 81302209 A EP81302209 A EP 81302209A EP 0065044 A1 EP0065044 A1 EP 0065044A1
Authority
EP
European Patent Office
Prior art keywords
liquid crystal
crystal display
prom
display apparatus
changeable
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
EP81302209A
Other languages
German (de)
English (en)
Other versions
EP0065044B1 (fr
Inventor
Allan J. Davie
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.)
LIQUID CRYSTAL TECHNOLOGY LIMITED
Original Assignee
Liquid Crystal Technology Ltd
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 Liquid Crystal Technology Ltd filed Critical Liquid Crystal Technology Ltd
Priority to EP81302209A priority Critical patent/EP0065044B1/fr
Priority to AT81302209T priority patent/ATE30795T1/de
Priority to DE8181302209T priority patent/DE3176526D1/de
Publication of EP0065044A1 publication Critical patent/EP0065044A1/fr
Application granted granted Critical
Publication of EP0065044B1 publication Critical patent/EP0065044B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C15/00—Other forms of jewellery
    • A44C15/0015—Illuminated or sound-producing jewellery

Definitions

  • the present invention relates to electronic apparatus for controlling the presentation of a changeable visual display.
  • Electronic apparatus for controlling the presentation of a changeable display have been proposed for use with liquid crystal display digital time-pieces as disclosed UK Patent No. 1569022 and UK Patent application 2026736 and also for use with a method for drawing graphic symbols as disclosed in UK Patent application 2028067.
  • Such apparatus is limited to producing only a temporal alphanumeric display or graphic symbols.
  • This type of apparatus requires external controls to operate the display.
  • this type of apparatus cannot be used to produce a temporal visual display which imitates animated motion, such as showing cartoon characters.
  • UK Patent application No. 2037048 discloses an LCD game drawn under the control of a microprocessor. Images are produced on the LCD which is composed of a matrix of LCD elements. With this type of display a 'staircase' is formed by the elements whenever a diagonal or a curved line is required. This is a poor visual representation compared with other 2-dimensional representations such as television, photographs and the like. In addition, this device requires a microprocess6r- to operate and also external controls to operate the device and change the display.
  • the present invention is intended to provide a remedy. It solves the problem of producing a changeable visual display without the requirement of external controls by using a programmable semiconductor device and a changeable liquid crystal display, the display being changeable from one visual presentation to another in accordance with instructions from the programmable semiconductor device.
  • the display is realistic and imitative of an animated display;
  • the display apparatus may be made small such as in an article of jewellery and worn on the person; no external controls are required to operate the apparatus, and the apparatus may be reprogrammed for use with a different display giving flexibility of choice.
  • the semiconductor device and the LCD are combined with a power source in an article of jewellery.
  • a semiconductor device in the form of a 'chip' 1 has a electrical circuitry located thereon fabricated by a low voltage complementary metal- oxide-semiconductor (CMOS) process or similar process.
  • CMOS complementary metal- oxide-semiconductor
  • An N-bit binary counter 2 is connected to a decoder 6 which decodes the said counter's output state to select an address of a preprogrammed read-only-memory (PROM) 3 to which it is connected.
  • PROM read-only-memory
  • One of the decoder outputs 4 is preprogrammed to reset the binary counter 2 in order that the programme sequence may be recycled after a specified number of steps.
  • the PROM 3 has M parallel outputs 5 which are connected to liquid crystal display drivers 8, and the drivers 8 also have M parallel outputs 9 which are connected to the front plane electrodes (not shown in the interest of clarity) of a liquid crystal display (Figs 6a-6d).
  • a first oscillator 10 is connected to the N-bit binary counter 2, and a second oscillator 11 is connected to the liquid crystal display (LCD) drivers 8 and to the back plane electrode (not shown) of the liquid crystal display.
  • LCD liquid crystal display
  • the frequencies of the first and second oscillators are set by the value of resistive and capacitive components (not shown) which are located external to the semiconductor chip 1.
  • Power is supplied to the chip via terminals 12 and 13 which are at a potential of typically 41 volts and zero volts respectively.
  • the data which has been 'read' from the PROM 3 is transferred in M parallel rows by the PROM outputs 5 to the liquid crystal display drivers 8 in accordance with the frequency of the oscillator 10.
  • the visual display data is caused to oscillate according to the frequency of oscillator 11 such that the data is either in-phase or in antiphase with the signal to the back plane electrode.
  • Signals in antiphase cause the electrode elements to change state and reflect light giving the appearance of darkening while those in pahse cause the appearance of the visual display to transmit light and so to remain unchanged.
  • the visual display data is then transferred from the drivers 8 to M crystal display electrodes in accordance with the frequency of oscillator 11, the frequency of which is typically 100 Hz to prevent deterioration of the liquid crystal display.
  • data signals are presented to the front plane electrodes in phase, or in antiphase, with signals from the oscillator 11 to the back plane electrode of the liquid crystal display.
  • the visual display thus presented at a given time is representative of the particular row of data read from the preprogrammed read-only-memory 3 for example Fig. 6a.
  • the visual display presented is continuously changedin accordance with the program in the PROM 3 from the display shown in Fig 6a through displays in Figs 6b,6c to Fig. 6d and to Fig. 6a. This gives the effect of an animated display.
  • the frequency of change is controlled by the oscillator 10, which is typically 0.1 hZ to 2 Hz.
  • the number of electrodes of the liquid crystal display (M) and the number of steps in the display sequency (2 N ) should be as large as possible to provide maximum display versatility.
  • Maximum values of N and M are typically 5 and 30 respectively.
  • an N-bit shift register 14 and NOR gate 15 are connected to the PROM 3 in place of the binary counter 2 and decoder 6, and a latch buffer 7 is inserted between the M parallel outputs 5 and the LCD drivers 8.
  • the outputs 7a of the latch buffer 7 are connected to the LCD drivers 8, and the oscillator 10 is also connected to the latch buffers 7, otherwise the circuit is.the same as for Fig. 1
  • the shift register 14 is clocked by the oscillator 10 which then sends an electrical signal corresponding to a logic "1" to the PROM 3 enabling data corresponding to a particular visual display to be read.
  • the NOR gate 15 ensures that there is only one logic "1" in the shift register at any one time.
  • the data which has been read is transfered in M parallel rows by the PROM outputs 5 to the latch buffers 7.
  • the data is then transferred from the latch buffers 7 to the LCD drivers 8 in accordcance with the frequency of the oscillator 10.
  • the control of the display by the oscillator 11, is the same as for the first circuit shown in Fig. 1.
  • the external resistor of the oscillator 10 is variable so that the frequency of the change of the visual display can be adjusted manually, which is an advantage of the apparatus according to the present invention.
  • the circuit shown in Fig. 3 is the same as the circuit of Fig. 1 except for the addition of a second 2 N xL PROM 17 located in the integrated circuit on the chip 1.
  • the inputs 16 to the chip are the same 2 N outputs from the decoder 6.
  • the L outputs 18 from the PROM 17 are fed to a speech or tone generator (not shown) so that the changeable visual display is complemented by a synchronised varying speech or tone signal.
  • the circuit shown in Fig. 4 is the same as Fig. 3 except that the second 2 N x L PROM 17 is located externally of the chip 1.
  • the PROM 17 may be a commercially available chip and its inputs 16 are taken from the outputs of the binary counter 2. This is because the address commands are decoded on a decoder located on the PROM 17.
  • the outputs of 18 of the PROM 17 are fed to a speech or tone generator.
  • the circuit shown in Fig. 5 includes a second N x L PROM 17 located in the integrated circuit of the chip 1.
  • the N inputs 16 of the PROM 17 are taken from the outputs of the shift register 14.
  • the L outputs 18 from the PROM 17 are fed to a latch 19 and the outputs 20 from the latch are fed to a tone or speech generator (not shown in the interest of clarity).
  • the circuit configuration shown in Fig 2 is not suitable for interfacing with a commercial PROM.
  • On processing mask will be unique to a particular liquid crystal design.
  • the mask will contain data by which memory transistors in the read-only-memory are enabled or disenabled to provide the required output bit pattern.
  • a typical display sequence is shown in Figs 6a-6d.
  • a further advantage is that the CMOS-based operation requires very low power consumption, resulting in continuous operation, over a period of a year or more, being achieved without battry renewal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Electric Clocks (AREA)
EP81302209A 1981-05-19 1981-05-19 Dispositif d'affichage électronique Expired EP0065044B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP81302209A EP0065044B1 (fr) 1981-05-19 1981-05-19 Dispositif d'affichage électronique
AT81302209T ATE30795T1 (de) 1981-05-19 1981-05-19 Elektronische flaechenanzeige.
DE8181302209T DE3176526D1 (en) 1981-05-19 1981-05-19 Electronic display apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81302209A EP0065044B1 (fr) 1981-05-19 1981-05-19 Dispositif d'affichage électronique

Publications (2)

Publication Number Publication Date
EP0065044A1 true EP0065044A1 (fr) 1982-11-24
EP0065044B1 EP0065044B1 (fr) 1987-11-11

Family

ID=8188305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81302209A Expired EP0065044B1 (fr) 1981-05-19 1981-05-19 Dispositif d'affichage électronique

Country Status (3)

Country Link
EP (1) EP0065044B1 (fr)
AT (1) ATE30795T1 (fr)
DE (1) DE3176526D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131590A (en) * 1982-11-18 1984-06-20 Meldisc Investments Pty Ltd Controlled visual display device
FR2565724A1 (fr) * 1984-06-07 1985-12-13 Rattinacannou Selva Dispositif applicable aux objets d'ornement vestimentaire.
ES2114812A1 (es) * 1996-03-25 1998-06-01 Desarrollos Electronicos Proym Aparato para facilitar informaciones preprogramadas.
CN102117593A (zh) * 2009-12-30 2011-07-06 乐金显示有限公司 显示装置和控制选通脉冲的方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505804A (en) * 1968-04-23 1970-04-14 Rca Corp Solid state clock
DE7114585U (de) * 1971-04-16 1971-11-25 Schroeer H Kompakte miniaturisierte elektronik in verbindung mit koerperschmuckgegenstaenden
DE2201268A1 (de) * 1972-01-12 1973-09-20 Grabe Bernt Von Optoelektronische anzeigevorrichtung zur darstellung von zeichen und mustern
GB1457536A (en) * 1972-11-22 1976-12-01 Sharp Kk Liquid crystal dynamic drive circuit
FR2368071A1 (fr) * 1976-10-14 1978-05-12 Camin Ind Corp Montre parlante
DE2720925A1 (de) * 1977-05-10 1978-11-16 Plaas Link Andreas Anordnung und verfahren zur steuerung optischer signale auf schmuckstuecken
GB2037048A (en) * 1978-12-04 1980-07-02 Smith J Liquid crystal game and training display apparatus
GB2052810A (en) * 1979-06-07 1981-01-28 Seikosha Kk Display device for an electronic timepiece

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2620165A1 (de) * 1976-05-07 1977-11-17 Joachim Sylla Lichtsignale emittierende vorrichtung, insbesondere schmuckgegenstand

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505804A (en) * 1968-04-23 1970-04-14 Rca Corp Solid state clock
DE7114585U (de) * 1971-04-16 1971-11-25 Schroeer H Kompakte miniaturisierte elektronik in verbindung mit koerperschmuckgegenstaenden
DE2201268A1 (de) * 1972-01-12 1973-09-20 Grabe Bernt Von Optoelektronische anzeigevorrichtung zur darstellung von zeichen und mustern
GB1457536A (en) * 1972-11-22 1976-12-01 Sharp Kk Liquid crystal dynamic drive circuit
FR2368071A1 (fr) * 1976-10-14 1978-05-12 Camin Ind Corp Montre parlante
DE2720925A1 (de) * 1977-05-10 1978-11-16 Plaas Link Andreas Anordnung und verfahren zur steuerung optischer signale auf schmuckstuecken
GB2037048A (en) * 1978-12-04 1980-07-02 Smith J Liquid crystal game and training display apparatus
GB2052810A (en) * 1979-06-07 1981-01-28 Seikosha Kk Display device for an electronic timepiece

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131590A (en) * 1982-11-18 1984-06-20 Meldisc Investments Pty Ltd Controlled visual display device
FR2565724A1 (fr) * 1984-06-07 1985-12-13 Rattinacannou Selva Dispositif applicable aux objets d'ornement vestimentaire.
ES2114812A1 (es) * 1996-03-25 1998-06-01 Desarrollos Electronicos Proym Aparato para facilitar informaciones preprogramadas.
CN102117593A (zh) * 2009-12-30 2011-07-06 乐金显示有限公司 显示装置和控制选通脉冲的方法

Also Published As

Publication number Publication date
EP0065044B1 (fr) 1987-11-11
ATE30795T1 (de) 1987-11-15
DE3176526D1 (en) 1987-12-17

Similar Documents

Publication Publication Date Title
US4926168A (en) Liquid crystal display device having a randomly determined polarity reversal frequency
US4386351A (en) Method and system for two-dimensional traveling display and driver circuits therefor
KR970005937B1 (ko) 데이타 인에이블 신호 입력시 엘.씨.디 제어신호 출력회로
EP0065044B1 (fr) Dispositif d'affichage électronique
US4205312A (en) Method and apparatus for causing a dot matrix display to appear to travel
KR100690407B1 (ko) 표시장치 및 표시장치용 인터페이스 회로
CN102194387A (zh) 电光装置、电光装置的驱动方法、电光装置的控制电路、电子设备
JPS58193583A (ja) ラスタ走査表示装置用記号発生装置および記号回転方法
GB2068622A (en) Programmable liquid crystal display e.g. for jewellery
WO2004111987A1 (fr) Dispositif d'affichage a matrice passive, a faible consommation d'energie, et son procede de commande
GB2062302A (en) Electronic timepieces
KR100480559B1 (ko) 색블링킹기능을구비한문자표시장치
JP2891730B2 (ja) 液晶表示装置と液晶駆動装置
GB2062908A (en) Improvements in or relating to electronic timepieces
JP2568014B2 (ja) 液晶表示装置の駆動方法、及びその装置
KR100317613B1 (ko) 진동 발광표시장치, 표시바의 진동방법 및 진동 표시바의표시방법
US20230162698A1 (en) Dot-matrix display device and timer apparatus
JPH10161612A (ja) マルチ画面液晶表示装置
JP3750729B2 (ja) 表示装置の駆動方法，表示装置
JPS62148992A (ja) 表示制御装置
SU594498A1 (ru) Устройство дл вывода информации на телевизионный экран
GB2300773A (en) LCD display memory using access delay time simulators
JPS59195181A (ja) 時計の表示装置
JP2797181B2 (ja) 液晶駆動方法及び液晶表示装置
KR940006668Y1 (ko) 영상문자 폭조절 시스템

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

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19830516

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LIQUID CRYSTAL TECHNOLOGY LIMITED

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DAVIE, ALLAN J.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

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

Ref country code: AT

Effective date: 19871111

REF Corresponds to:

Ref document number: 30795

Country of ref document: AT

Date of ref document: 19871115

Kind code of ref document: T

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

Ref country code: SE

Effective date: 19871130

REF Corresponds to:

Ref document number: 3176526

Country of ref document: DE

Date of ref document: 19871217

ITF It: translation for a ep patent filed

Owner name: STUDIO TORTA SOCIETA' SEMPLICE

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: LIQUID CRYSTAL TECHNOLOGY LIMITED

REG Reference to a national code

Ref country code: FR

Ref legal event code: CA

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: FR

Payment date: 19910524

Year of fee payment: 11

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910531

Year of fee payment: 11

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

Ref country code: CH

Payment date: 19910606

Year of fee payment: 11

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

Ref country code: LU

Payment date: 19910620

Year of fee payment: 11

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

Ref country code: DE

Payment date: 19910628

Year of fee payment: 11

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

Ref country code: BE

Payment date: 19910705

Year of fee payment: 11

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

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

Effective date: 19920519

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

Ref country code: LI

Effective date: 19920531

Ref country code: CH

Effective date: 19920531

Ref country code: BE

Effective date: 19920531

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

Ref country code: GB

Payment date: 19920601

Year of fee payment: 12

BERE Be: lapsed

Owner name: LIQUID CRYSTAL TECHNOLOGY LTD

Effective date: 19920531

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

Ref country code: NL

Effective date: 19921201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930129

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19930202

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: GB

Effective date: 19930519

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

Effective date: 19930519