GB2011143A - Liquid-crystal display device - Google Patents
Liquid-crystal display deviceInfo
- Publication number
- GB2011143A GB2011143A GB7848468A GB7848468A GB2011143A GB 2011143 A GB2011143 A GB 2011143A GB 7848468 A GB7848468 A GB 7848468A GB 7848468 A GB7848468 A GB 7848468A GB 2011143 A GB2011143 A GB 2011143A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- group
- groups
- display device
- crystal display
- 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
Links
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
- G09F9/35—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 liquid crystals
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G9/00—Visual time or date indication means
- G04G9/02—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques
- G04G9/06—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
- G04G9/062—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals using multiplexing techniques
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G9/00—Visual time or date indication means
- G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
- G04G9/12—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
- G04G9/122—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals using multiplexing techniques
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electric Clocks (AREA)
Abstract
A liquid crystal display device comprises elements F, each actuable individually through a first and a second electrode, e.g. arranged in two concentric circles, e.g. to indicate minutes and hours: the elements in the two circles are divided into matched equal groups I-VI, VII-XII with a common second electrode g1-6, 7-12 for each group, and first electrodes of radially related elements are interconnected; sets of these radial pairs are further connected by conductors e1-10 running circumferentially alternately within the inner circle and outside the outer. Two groups or inner-outer pairs of groups, each group or pair providing independent display of selected elements, are driven with d.c. or a.c. of opposite sign/phase just below threshold, and element sets are driven at voltages chosen to provide above or below threshold p.d. against the group electrodes according to the selected display. The system can be applied to a twin 7-segment digit display. <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772757502 DE2757502A1 (en) | 1977-12-22 | 1977-12-22 | Liq. crystal display control system - uses two base voltages applied to electrodes of separated groups |
DE19782803899 DE2803899C2 (en) | 1978-01-30 | 1978-01-30 | Method for controlling a quasi-analog clock display device |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2011143A true GB2011143A (en) | 1979-07-04 |
GB2011143B GB2011143B (en) | 1982-06-30 |
Family
ID=25773356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7848468A Expired GB2011143B (en) | 1977-12-22 | 1978-12-14 | Liquid-crystal display device |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5491197A (en) |
BR (1) | BR7808403A (en) |
FR (1) | FR2412900A1 (en) |
GB (1) | GB2011143B (en) |
IT (1) | IT1109233B (en) |
NL (1) | NL7812331A (en) |
SE (1) | SE7812956L (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2144255A (en) * | 1983-07-28 | 1985-02-27 | Secr Defence | A meter display |
FR2639754A1 (en) * | 1988-11-30 | 1990-06-01 | Jaeger | Improved liquid-crystal display device |
CN105321474A (en) * | 2014-07-31 | 2016-02-10 | 乐金显示有限公司 | Organic light emitting diode display device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH631861GA3 (en) * | 1980-02-18 | 1982-09-15 | ||
JPS56153280A (en) * | 1981-04-01 | 1981-11-27 | Seikosha Co Ltd | Whole electronic analog display timepiece |
JPS56153279A (en) * | 1981-04-01 | 1981-11-27 | Seikosha Co Ltd | Whole electronic analog display timepiece |
JPS6349749Y2 (en) * | 1987-06-08 | 1988-12-21 |
-
1978
- 1978-12-14 GB GB7848468A patent/GB2011143B/en not_active Expired
- 1978-12-18 SE SE7812956A patent/SE7812956L/en unknown
- 1978-12-20 IT IT52376/78A patent/IT1109233B/en active
- 1978-12-20 NL NL7812331A patent/NL7812331A/en not_active Application Discontinuation
- 1978-12-21 BR BR7808403A patent/BR7808403A/en unknown
- 1978-12-21 FR FR7836040A patent/FR2412900A1/en not_active Withdrawn
- 1978-12-21 JP JP15695078A patent/JPS5491197A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2144255A (en) * | 1983-07-28 | 1985-02-27 | Secr Defence | A meter display |
FR2639754A1 (en) * | 1988-11-30 | 1990-06-01 | Jaeger | Improved liquid-crystal display device |
CN105321474A (en) * | 2014-07-31 | 2016-02-10 | 乐金显示有限公司 | Organic light emitting diode display device |
Also Published As
Publication number | Publication date |
---|---|
GB2011143B (en) | 1982-06-30 |
NL7812331A (en) | 1979-06-26 |
FR2412900A1 (en) | 1979-07-20 |
SE7812956L (en) | 1979-06-23 |
BR7808403A (en) | 1980-04-01 |
JPS5491197A (en) | 1979-07-19 |
IT7852376A0 (en) | 1978-12-20 |
IT1109233B (en) | 1985-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |