EP1344208A2 - Bildanzeigeeinrichtung aus einer vielzahl stiller gasentladungslampen - Google Patents
Bildanzeigeeinrichtung aus einer vielzahl stiller gasentladungslampenInfo
- Publication number
- EP1344208A2 EP1344208A2 EP01271620A EP01271620A EP1344208A2 EP 1344208 A2 EP1344208 A2 EP 1344208A2 EP 01271620 A EP01271620 A EP 01271620A EP 01271620 A EP01271620 A EP 01271620A EP 1344208 A2 EP1344208 A2 EP 1344208A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- image display
- gas discharge
- display device
- discharge lamps
- color
- 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
- G09F9/313—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 gas discharge devices
Definitions
- Image display device from a large number of silent gas discharge lamps
- This invention relates to an image display device constructed from silent gas discharge lamps.
- Silent gas discharge lamps are known per se and by definition have a dielectric layer between at least the anode (s) and the discharge medium, but in the bipolar case all electrodes are dielectrically impeded.
- Silent discharge lamps as such are known. They are of interest for various applications, in particular also for backlighting displays in flat screens and the like.
- the design is known as a so-called flat radiator, in which the lamp essentially consists of two plane-parallel plates which can be connected via a frame and enclose the discharge medium between them. One of the two plates serves as the light emitting surface of the flat spotlight.
- These silent gas discharge lamps are preferably operated using a pulsed operating method with which a particularly high efficiency in the generation of light (UV light or preferably visible light when using phosphors) can be achieved.
- This operating method are also state of the art and familiar to the person skilled in the art; so that it is not discussed in detail here.
- the various areas of the instrument lighting can also be colored differently, that is to say that fluorescent materials or fluorescent lamps of different colors can be used. Reference is made to EP 97 122 799.6.
- the present invention is based on the technical problem of specifying a new application for silent gas discharge lamps.
- the invention relates to an image display device comprising a plurality of gas discharge lamps, each with a discharge vessel filled with a gas filling, at least two electrodes, a dielectric layer between at least one of the electrodes and the gas filling, and a phosphor layer, the gas discharge lamps being arranged in a planar manner next to one another are arranged, the image display is colored and the gas discharge larapen can emit different colors.
- an image display device that is to say a display, is to be constructed from a large number of silent gas discharge lamps arranged next to one another in a planar manner and not only monochrome image information but also a color image composed of at least two, preferably three primary colors can be displayed by colored operation of the silent discharge lamps.
- the individual discharge lamps each have monochrome pixels.
- a multi-color image display is made possible by and through a set of adjacent differently colored pixels.
- the individual gas discharge lamp can already represent the color spectrum of the display and thus functions as a full-color pixel (with two or three primary colors). Then the spatial resolution of the display is in the range of the dimensions of the individual discharge lamp or better. It is also possible for the individual discharge lamp to form not just one, but a plurality of full-color pixels by being spatially divided and containing full-color pixels in different adjacent partial areas. This is a question of the separate operability of partial areas of the discharge lamp and, with the inexpensive manufacture of large-format silent discharge lamps, can be cheaper than a correspondingly larger number of lamps of smaller formats.
- a color spectrum of the fluorescent colors of the phosphor sub-areas and the mixed colors that can be produced from them can be emitted with each partial phosphor surface results in a largely homogeneous light radiation, that is to say illumination of essentially the entire light radiation surface of the respective pixel can, however, correspond to a partial area of the total light-emitting area of the lamp, the corresponding fluorescent areas and electrode groups then only having to be nested within this partial area.
- the two or more pixels within the same lamp in this case must of course be operated independently of one another in order to be a total of separate pixels function, so that a complex group structure within the lamp can result on the one hand through the primary color assignment and on the other hand through the multiple pixels.
- the gas discharge lamp can be operated sequentially in time with successive colors, the frequency of the color generation being so high that the human eye actually perceives a corresponding mixed color.
- a plurality of electrode groups can be provided within a gas discharge lamp, which are operated sequentially, or a plurality of discharge lamps which are each assigned to the individual colors and can be operated sequentially overall can be provided.
- the upstream LCD display described in the cited application could be dispensed with because basically only the color of an image pixel is to be generated by the sequential operation. This can be done only by controlling the performance of the individual primary colors, without the need for additional intervention by an LCD display or another brightness filter. Of course, it is also possible to work with such a display, which can greatly increase the spatial resolution, however, the cost increases considerably.
- the image display device according to the invention would thus consist of a parallel connection of individual LCD displays according to the referenced application 19927 791.5.
- FIG. 1 schematically shows the structure of a light emission surface of a silent gas discharge lamp with two phosphor partial surfaces, each corresponding to primary colors;
- FIG. 3 illustrates the structure of a variant of FIG. 1, namely the nesting of three phosphor partial areas, each corresponding to primary colors;
- FIG. 4 schematically illustrates an image display device according to the invention to be constructed from silent gas discharge lamps according to FIGS. 1-3.
- the light emission surface 1 schematically shows the surface structure of a light emission surface 1 of a silent gas discharge lamp.
- the light emission surface 1 corresponds essentially to the translucent ceiling plate of a conventional silent flat radiator with the exception of the details explained below. It can be seen that the light emission surface 1 is divided into a checkerboard pattern into two phosphor partial surfaces 2 and 3.
- the phosphor partial surfaces 2 and 3 are understood as the sum of the respective light and dark squares, so each phosphor partial surface 2 and 3 forms half of the light radiation surface and is the only one Excitation already capable of illuminating the light emission surface 1 essentially completely.
- the phosphor sub-area 2 should emit a blue color and the phosphor sub-area a yellow color. This means that in addition to the shades of yellow and blue, shades can also be represented in a continuous green spectrum, which is obtained by mixing the two primary colors.
- the homogeneity can be further strengthened by additionally connecting a diffuser element, known per se for homogenizing the luminance distribution in backlit screens, in front of the discharge lamp, for example a prismatic film or a focusing screen.
- a diffuser element known per se for homogenizing the luminance distribution in backlit screens, in front of the discharge lamp, for example a prismatic film or a focusing screen.
- FIG. 2 shows an example of an electrode structure suitable for FIG. 1.
- the two middle horizontal lines 4 correspond to two anodes, the electrode strips 5 and 6 which are meandering rectangularly to a certain extent around these anodes 4 are cathodes which can be operated separately from one another and have respective projections 7 for localizing individual charge structures 8.
- the cathode 5 is designed with broken lines to prevent it from to make the cathode 6 distinguishable, in fact it is of course a continuous path.
- the separate operability of the cathodes 5 and 6 results in two electrode groups 4, 5 and 4, 6 (with common anodes), to which the discharge structures schematically shown as triangles are assigned. The figure therefore assumes that both electrode groups are operated simultaneously.
- the electrode strips 4, 5, 6 must be insulated from one another at the crossing points and in the areas in which they run relatively closely adjacent. For this purpose, a corresponding safety distance can be provided between the cathode pins 5 and 6, in particular in the adjacent areas, which is not shown in the drawing in FIG. 2. It goes without saying that the squares enclosed between the cathodes 5 and 6 and the anodes 4, in which the individual device structures 8 are located, are arranged in the lamp directly under the individual squares of the partial phosphor surfaces 2 and 3. As a result, the electrode groups 4, 5 and 4, 6 are each assigned to one of the two phosphor partial areas 2 and 3.
- FIG. 3 shows a variant of the pattern from FIG. 1, which is designed for three primary colors.
- the partial fluorescent areas are designated 9, 10 and 11 and correspond to the primary colors blue at 9, green at 10 and red at 11 in this variant.
- a correspondingly constructed gas discharge lamp is in principle able to display a full color spectrum. Otherwise, the explanations for FIG. 1 apply.
- the electrode structure required for the variant in FIG. 3 is naturally somewhat more complex than the one shown in FIG. 2 and is not explained in detail here because nothing fundamentally new arises from it.
- Fig. 4 schematically shows a large-format image display device 12 with a frame 13 which carries a large-format rectangular flat screen wall 14 erected and raised above the ground.
- Such an image display device 12 could be used, for example, in a large sports stadium as an information area or could also be mounted as an advertising board, for example on house walls, then of course without the frame 13 shown here.
- the flat screen wall 14 consists essentially of a large number of individual gas discharge lamps 15 mounted planar next to one another, which correspond to the 1 and 2 or corresponding to Fig. 3 are constructed. As a result, they form full-color pixels for a color display with two or three primary colors.
- the graphic image information (light-dark information) has a spatial resolution corresponding to the d ⁇ T size of the individual gas discharge lamps 15.
- the flat screen wall 14 should therefore be designed in such a way that the viewer can recognize an image overall at an assumed observation distance and preferably no longer perceives a single lamp for himself.
- the image display device 12 from FIG. 4 can also be constructed from gas discharge lamps 15 which are each monochrome but of different colors.
- gas discharge lamps 15 which are each monochrome but of different colors.
- this corresponds to a pattern of the primary colors as in FIG. 1, but the individual square or rectangle now corresponds to a complete gas discharge lamp and not to a very fluorescent leak.
- the individual gas discharge lamps 15 can also have a shape other than a rectangular one (namely, in FIG. 3 as parallelograms with 60 ° and 120 ° angles).
- the graphic image information can be obtained either by controlling the power of the individual lamps 15 or by additionally using an LCD filter, for example, but this increases the costs considerably.
- silent discharge lamps for image display devices 12 as in FIG. 4
- silent discharge lamps can be used to achieve a very high luminance with an acceptable power consumption.
- silent discharge lamps are extremely switch-resistant, ie they are well suited for time-varying continuous applications. They also show practically no start-up behavior or temperature dependence of the light output.
Landscapes
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Planar Illumination Modules (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10063931A DE10063931A1 (de) | 2000-12-20 | 2000-12-20 | Bildanzeigeeinrichtung aus einer Vielzahl stiller Gasentladungslampen |
DE10063931 | 2000-12-20 | ||
PCT/DE2001/004282 WO2002050807A2 (de) | 2000-12-20 | 2001-11-15 | Bildanzeigeeinrichtung aus einer vielzahl stiller gasentladungslampen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1344208A2 true EP1344208A2 (de) | 2003-09-17 |
EP1344208B1 EP1344208B1 (de) | 2004-09-15 |
Family
ID=7668245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01271620A Expired - Lifetime EP1344208B1 (de) | 2000-12-20 | 2001-11-15 | Bildanzeigeeinrichtung aus einer vielzahl stiller gasentladungslampen |
Country Status (9)
Country | Link |
---|---|
US (1) | US6972519B2 (de) |
EP (1) | EP1344208B1 (de) |
JP (1) | JP2004515901A (de) |
KR (1) | KR100838855B1 (de) |
CN (1) | CN1554080A (de) |
AT (1) | ATE276567T1 (de) |
CA (1) | CA2431992A1 (de) |
DE (2) | DE10063931A1 (de) |
WO (1) | WO2002050807A2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1823398A (zh) * | 2003-07-15 | 2006-08-23 | 皇家飞利浦电子股份有限公司 | 颜色可调谐的照明元件 |
DE102006026348A1 (de) * | 2006-06-02 | 2007-12-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Entladungslampe für unipolare dielektrisch behinderte Entladungen |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI73325C (fi) | 1985-03-05 | 1987-09-10 | Elkoteade Ag | Foerfarande foer alstring av individuellt reglerbara bildelement och pao dessa baserad faergdisplay. |
JPH064902A (ja) * | 1992-06-19 | 1994-01-14 | Canon Inc | ポリカーボネート樹脂組成物、及びそれを用いた光記録媒体用基板とその製造方法 |
US5461397A (en) | 1992-10-08 | 1995-10-24 | Panocorp Display Systems | Display device with a light shutter front end unit and gas discharge back end unit |
JP3075041B2 (ja) | 1992-12-28 | 2000-08-07 | 三菱電機株式会社 | ガス放電表示装置 |
US5479071A (en) | 1993-05-03 | 1995-12-26 | Flat Candle Company | Flat form device for creating illuminated patterns |
JPH0926705A (ja) * | 1995-07-10 | 1997-01-28 | Toshiba Corp | 画像形成装置および画像形成方法 |
DE19636965B4 (de) * | 1996-09-11 | 2004-07-01 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Elektrische Strahlungsquelle und Bestrahlungssystem mit dieser Strahlungsquelle |
EP0926705A1 (de) | 1997-12-23 | 1999-06-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Flachstrahler mit örtlich modulierter Flächenleuchtdichte |
DE19817477A1 (de) * | 1998-04-20 | 1999-10-21 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Leuchtstofflampe mit auf die geometrische Entladungsverteilung abgestimmter Leuchtstoffschichtdicke |
DE19844720A1 (de) | 1998-09-29 | 2000-04-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dimmbare Entladungslampe für dielektrisch behinderte Entladungen |
DE19845228A1 (de) | 1998-10-01 | 2000-04-27 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Dimmbare Entladungslampe für dielektrisch behinderte Entladungen |
DE19927791A1 (de) | 1999-06-18 | 2000-12-21 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Farbanzeige mit sequentieller Primärfarberzeugung |
-
2000
- 2000-12-20 DE DE10063931A patent/DE10063931A1/de not_active Withdrawn
-
2001
- 2001-11-15 KR KR1020037008433A patent/KR100838855B1/ko not_active IP Right Cessation
- 2001-11-15 US US10/450,902 patent/US6972519B2/en not_active Expired - Fee Related
- 2001-11-15 WO PCT/DE2001/004282 patent/WO2002050807A2/de active IP Right Grant
- 2001-11-15 AT AT01271620T patent/ATE276567T1/de not_active IP Right Cessation
- 2001-11-15 EP EP01271620A patent/EP1344208B1/de not_active Expired - Lifetime
- 2001-11-15 CA CA002431992A patent/CA2431992A1/en not_active Abandoned
- 2001-11-15 DE DE50103682T patent/DE50103682D1/de not_active Expired - Lifetime
- 2001-11-15 CN CNA018210287A patent/CN1554080A/zh active Pending
- 2001-11-15 JP JP2002551826A patent/JP2004515901A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO0250807A2 * |
Also Published As
Publication number | Publication date |
---|---|
CA2431992A1 (en) | 2002-06-27 |
WO2002050807A2 (de) | 2002-06-27 |
DE50103682D1 (de) | 2004-10-21 |
ATE276567T1 (de) | 2004-10-15 |
CN1554080A (zh) | 2004-12-08 |
KR20030064860A (ko) | 2003-08-02 |
US6972519B2 (en) | 2005-12-06 |
KR100838855B1 (ko) | 2008-06-16 |
DE10063931A1 (de) | 2002-07-04 |
JP2004515901A (ja) | 2004-05-27 |
EP1344208B1 (de) | 2004-09-15 |
US20040061420A1 (en) | 2004-04-01 |
WO2002050807A3 (de) | 2003-01-23 |
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