Unbalance vector display device and process

• US 3,938,134 A
• Filed: 08/30/1974
• Issued: 02/10/1976
• Est. Priority Date: 09/05/1973
• Status: Expired due to Term

• Current Assignee: CARL Schenck AG (Durr AG)
• Original Assignee: CARL Schenck AG (Durr AG)
• Inventors: Holdinghausen, Paul, Hackstein, Guenter, Homilius, Karl
• Primary Examiner(s): Trafton, David L.
• Application Number:
  US05/501,884
• Time in Patent Office: 529 Days
• Field of Search: 340/324 M, 73/71.4, 73/465, 73/66, 350/160 LC
• US Class Current: 345/4
• CPC Class Codes: G01M 1/08 Instruments for indicating directly the magnitude and phase of the imbalance
• CPC Class Codes: G02F 1/133509 Filters, e.g. light shielding masks
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
• CPC Class Codes: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

The present display device combines a liquid crystal display panel with a transparent dial for example having a polar coordinate system on which the information shown by the panel may be displayed with regard to its value and location or angular position. This type of display is especially suitable for displaying unbalance informations of a body to be balanced. In the present process an unbalance representing signals are separated into horizontal and vertical components, which are then supplied respectively to the row and column electrodes of said liquid crystal display device. The dial itself may also be constituted as a liquid crystal display panel. The row and column electrodes may be provided in several sets for simultaneously displaying several unbalance informations, for example, relating to different planes in a body to be balanced.

Claims

1. A display device for displaying an unbalance information for a body to be balanced in at least one plane, comprising a liquid crystal display panel, transparent dial means superimposed upon said liquid crystal display panel, means holding said liquid crystal display panel and said transparent dial means in an operational relationship to each other, said liquid crystal display panel comprising row electrodes and column electrodes each including respective row electrode elements and column electrode elements, said electrode elements having different configurations, said row electrodes further comprising first means for conductively interconnecting elements of the same configuration to form a plurality of rows, said column electrodes further comprising second means for conductively interconnecting elements of the same configuration to form a plurality of columns, said rows and columns being arranged so that elements of the same configuration are in register with each other and so that an element of one configuration alternates with an element of another configuration in the physical distribution of said electrode elements in said liquid crystal display panel.

2. The unbalance information display device according to claim 1, wherein said liquid crystal display panel comprises a first plate, said row electrodes forming an electrode raster on said first plate, a second plate, said column electrodes forming a further electrode raster on said second plate, said electrode rasters facing each other, liquid crystal means located intermediate said electrode rasters, at least one of said plates being transparent, and wherein said transparent dial means are secured to said transparent plate opposite its respective electrode raster.

3. The unbalance information display device according to claim 1, further comprising a transparent protective cover on top of said dial means.

4. The unbalance information display device according to claim 1, wherein said dial means has a given configuration, said dial means comprising a first set of dial electrodes resembling said dial configuration and secured to said liquid crystal panel, a dial base plate, a second set of dial electrodes secured to said dial base plate, and further liquid crystal means between said first and second sets of dial electrodes, whereby the dial means form a second liquid crystal display panel which is superimposed upon said first mentioned liquid crystal display panel.

5. The unbalance information display device according to claim 4, further comprising contrast enhancing means interposed between said first and second liquid crystal display panels.

6. The unbalance information display device according to claim 1, comprising a first plate and a second plate, a first set of electrodes secured to one of said plates, a second set of electrodes secured to the other of said plates, said first and second set of electrodes facing each other, and liquid crystal means interposed between said electrodes, said first and second set of electrodes comprising a plurality of electrode elements, at least one of said plates being transparent, and wherein the electrodes secured to the transparent plate are also transparent, said dial means being secured to said transparent plate.

7. The unbalance information display device according to claim 6, wherein said dial means are secured to one surface of said transparent plate while the respective set of transparent electrodes is secured to the opposite surface of said transparent plate.

8. The unbalance information display device according to claim 1, further comprising control means for said liquid crystal display device, said control means being arranged at the liquid crystal display device or as part thereof.

9. A process for displaying an unbalance information for a body to be balanced in at least one plate comprising, employing a liquid crystal display device having row electrodes and column electrodes with respective input terminals, providing said row electrodes and said column electrodes with electrode elements having alternately different configurations, registering row electrodes with column electrodes so that electrodes with the same configuration register with each other to form a pair, superimposing a dial on said liquid crystal display device, separating said unbalance information into two signal components, storing said signal components in separate signal channels and supplying said separate signal components to said row and column input terminals to simultaneously display with the aid of said superimposed dial the size and angular position of said unbalance information relative to said body to be balanced.

10. The process according to claim 9, wherein said unbalance information is separated in horizontal and vertical signal components, and supplying the horizontal signal components to said row electrodes, and said vertical signal components to said column electrodes.

11. The process according to claim 9, for displaying unbalance informations relating to a plurality of planes in a body to be balanced comprising employing a liquid crystal display device having a set of column electrodes and a set of row electrodes for each plane of said body to be balanced, separating and storing the unbalance information signals for each plane separately, supplying the respective separate signal components to the corresponding row and column electrodes, and displaying with the aid of said dial an unbalance information separately for each plane of said body to be balanced.

12. The process according to claim 9, further comprising employing a transparent liquid crystal display device and dial, reading the displayed information on the front side of said dial and photographically storing the displayed information from the rear side of the transparent liquid crystal display device.