EP1529274A1 - Vorrichtung zur erstellung von durch auffallendes licht erkennbaren bildern und texten - Google Patents
Vorrichtung zur erstellung von durch auffallendes licht erkennbaren bildern und textenInfo
- Publication number
- EP1529274A1 EP1529274A1 EP03790891A EP03790891A EP1529274A1 EP 1529274 A1 EP1529274 A1 EP 1529274A1 EP 03790891 A EP03790891 A EP 03790891A EP 03790891 A EP03790891 A EP 03790891A EP 1529274 A1 EP1529274 A1 EP 1529274A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- color
- mirror
- chamber
- paint
- container
- 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
- 239000003973 paint Substances 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims description 3
- 240000002853 Nelumbo nucifera Species 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 2
- 239000002071 nanotube Substances 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims 1
- 239000004917 carbon fiber Substances 0.000 claims 1
- 239000003086 colorant Substances 0.000 description 9
- 230000004913 activation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- G09F9/37—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 movable elements
- G09F9/377—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 movable elements the positions of the elements being controlled by pneumatic means
-
- 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
- G09F9/37—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 movable elements
- G09F9/372—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 movable elements the positions of the elements being controlled by the application of an electric field
Definitions
- the invention relates to a device for creating images and texts recognizable by striking light, in which the image surface is composed of numerous electronically controllable, grid-like arranged point elements and in which each point element has at least one color mirror, which is at least on the flat visible side transparent container is formed and the interior of which is connected via a channel to a paint container, the content of which can be put under pressure by electronic control so that color passes from the paint container into the color mirror and, by reducing the pressure in the paint container, the color from the color mirror is transported back into the paint container.
- each dot element or each pixel can assume two colors, namely either the color of the rear wall of the color mirror or the color coming from the paint container the color mirror is pressed.
- the transport of the colors from the paint containers into the color mirrors takes place by means of piezo actuators or with the help of an external electrical field.
- the known color mirrors can indeed be connected to color containers with different colors, but because each point element can only take on two colors, colored images are only possible with very coarse screening.
- each dot element has at least three color mirrors which are connected to color containers which are filled with different colors, in particular black, cyan, yellow and magenta.
- the point elements composed in this way can assume the colors of the selected color containers in the image area. Since two or more color containers of a point element can also be controlled, the point elements can also control the colors of color mixtures accept.
- the color levels of a point element can also be arranged one behind the other, provided that the upstream color levels consist of clearly transparent material and are connected to color containers filled with transparent colors.
- the paint containers are operated by means of micropumps, e.g. Piezo actuators, pressurized. These piezo actuators can be controlled via a diode matrix.
- the invention has for its object to improve the known devices so that a color change of the color mirror is accelerated and the energy required for color and image changes is significantly reduced.
- a movable wall is arranged in the paint container as a pump element, which divides the paint container into a paint chamber and a gas chamber, and in that the paint mirror is connected to the gas chamber via a second channel.
- the solution according to the invention does not build up a greater pressure of a gas cushion in the color level when the color level is filled with color, the filling takes place more quickly and with less energy expenditure.
- the discharge of the gas in the color mirror into a gas chamber of the ink container when color is pressed from the ink chamber into the color mirror has the result that only the energy required for the color change is required for the transport of ink liquid from the ink chamber into the container of the color mirror and back is required. Furthermore, there is also no danger that gas will diffuse into the color liquid due to the pressure increase in the color level.
- Figure 1 is a sectional view of a color mirror with paint container in about 30 to 40 times magnification.
- FIG. 2-5 sectional views of the color mirror and paint container with
- a screen is composed of several hundred thousand point elements or pixels 1.
- Each point element 1 has at least one color mirror 3 which can be seen in FIG. 1 and which consists of a flat container, the wall 2 of which on the visible side is transparent and which is above one Channel 6 is connected to a paint container 5.
- a micropump 7 which can press liquid paint from the paint container 5 into the color mirror 3 and retrieve color from the color mirror 3.
- a movable wall 30 is arranged in the paint container 5 as a pump element and divides the paint container 5 into a paint chamber 31 and a gas chamber 32.
- the channel 6 is connected to the ink chamber 31 and opens into the flat container of the color mirror 3 on the left side.
- a channel 33 is arranged on the opposite right side of the color mirror 3, which connects the color mirror 3 to the gas chamber 32. If the micropump 7 pushes the wall 30 to the left, then the ink chamber 31 becomes smaller and the gas chamber 32 larger.
- Valves or slides 8, 34 are arranged in channel 6 and in channel 33, with the aid of which channels 6 and 33 can be opened or closed. By closing the channels 6 and 33, the state of the color mirror 3 can be fixed independently of the operating state of the micropump 7. In this way, still images can be fixed so that the system can be switched off from a power supply.
- the channels 6 and 33 are shown relatively long for a better overview. To reduce the energy to be used when changing colors, these channels 6 and 33 should be as short as possible.
- FIG. 2 to 5 show four schematic images of operating states of a color mirror 3 with color container 5.
- the movable wall 30 is in the starting position and the color mirror 3 is free of color.
- the volume of the ink chamber 31 is dimensioned such that in the starting position the ink liquid in the channel 6 is at the junction of the channel 6 in the ink level 3, so that 7 color enters the ink level 8 immediately after activation of the micropump.
- the wall 30 presses paint liquid from the paint chamber 31 into the paint mirror 3. Gas is pressed from the paint mirror 3 into the gas chamber 32, which becomes larger.
- the color mirror 3 is completely filled with color liquid.
- FIG. 5 corresponds to the starting position shown in FIG. 2.
- the micropump 7 is formed by a piezo actuator which, when activated, pivots the movable wall 30 like a finger and thereby presses on the paint liquid located in the paint chamber 31.
- the free end of the wall 30 must lie tightly against the upper wall of the paint container 5 with a sealing lip.
- the movable wall 30 can work against an elastic membrane which separates the ink chamber 31 from the gas chamber 32.
- the maximum pump volume of the micropump 7, which can be formed by a piezo actuator, a nanotube or another element that causes a pumping movement, corresponds approximately to the volume of the flat container of the color mirror 3.
- the maximum volume of the gas chamber 32 should also correspond to the volume of the color mirror 3 and the maximum pump volume.
- the interior of the color mirror 3 in particular is treated to be liquid-repellent, for example with the agent sold under the "Ombrello" brand. 1 to 5, only a color mirror, which is connected to a paint container 5, is shown as a point element or pixel 1.
- a point element can also have three or more color mirrors arranged next to one another or also one above the other, each color mirror being connected to the color chambers 31 and gas chambers 32 of the own color container 5 via channels 6 and 33.
- the channel 6 is widened in a funnel-like manner both in its opening into the color mirror 3 and in its opening in the color chamber 5.
- the color liquid is up to the junction of the channel 6 in the color level 3, so that no time is lost when the color level 3 is filled with color.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Micromachines (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10237069 | 2002-08-09 | ||
| DE2002137069 DE10237069A1 (de) | 2002-08-09 | 2002-08-09 | Vorrichtung zur Erstellung von durch auffallendes Licht erkennbaren Bildern und Texten |
| PCT/EP2003/008850 WO2004021318A1 (de) | 2002-08-09 | 2003-08-08 | Vorrichtung zur erstellung von durch auffallendes licht erkennbaren bildern und texten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1529274A1 true EP1529274A1 (de) | 2005-05-11 |
| EP1529274B1 EP1529274B1 (de) | 2006-10-04 |
Family
ID=30469721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03790891A Expired - Lifetime EP1529274B1 (de) | 2002-08-09 | 2003-08-08 | Vorrichtung zur erstellung von durch auffallendes licht erkennbaren bildern und texten |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1529274B1 (de) |
| AU (1) | AU2003251699A1 (de) |
| DE (2) | DE10237069A1 (de) |
| WO (1) | WO2004021318A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009052271A1 (de) | 2009-11-09 | 2011-05-12 | Aspre Ag | Display |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005023617A1 (de) | 2005-05-21 | 2006-11-23 | Aspre Ag | Verfahren zum Mischen von Farben in einem Display |
| DE102006009541A1 (de) * | 2006-02-28 | 2007-08-30 | Aspre Ag | Bildfläche oder Display |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04166981A (ja) * | 1990-10-31 | 1992-06-12 | Toshiba Corp | ディスプレイ装置 |
| US5717283A (en) * | 1996-01-03 | 1998-02-10 | Xerox Corporation | Display sheet with a plurality of hourglass shaped capsules containing marking means responsive to external fields |
| EP1090384B1 (de) * | 1998-06-26 | 2002-04-17 | Pirschel, Manfred | Vorrichtung zur erstellung von durch auffallendes licht erkennbaren bildern und texten |
-
2002
- 2002-08-09 DE DE2002137069 patent/DE10237069A1/de not_active Withdrawn
-
2003
- 2003-08-08 WO PCT/EP2003/008850 patent/WO2004021318A1/de not_active Ceased
- 2003-08-08 DE DE50305286T patent/DE50305286D1/de not_active Expired - Lifetime
- 2003-08-08 AU AU2003251699A patent/AU2003251699A1/en not_active Abandoned
- 2003-08-08 EP EP03790891A patent/EP1529274B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004021318A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009052271A1 (de) | 2009-11-09 | 2011-05-12 | Aspre Ag | Display |
| WO2011054456A1 (de) | 2009-11-09 | 2011-05-12 | Aspre Ag | Display |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10237069A1 (de) | 2004-02-19 |
| DE50305286D1 (de) | 2006-11-16 |
| AU2003251699A1 (en) | 2004-03-19 |
| EP1529274B1 (de) | 2006-10-04 |
| WO2004021318A1 (de) | 2004-03-11 |
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