Partitionable display system

• US 5,488,496 A
• Filed: 03/07/1994
• Issued: 01/30/1996
• Est. Priority Date: 03/07/1994
• Status: Expired due to Term

• Current Assignee: Jerrold S. Pine
• Original Assignee: Jerrold S. Pine
• Inventors: Pine, Jerrold S.
• Primary Examiner(s): Sikes, William L.
• Assistant Examiner(s): Dudek, James A.
• Time in patent office: 694 Days
• Field of Search: 359/63, 359/62, 359/83
• US Class Current: 349/96
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13

Abstract

An apparatus to display images with partitionable regions allowing visible, invisible, and narrow field of view of displayed information includes a polarizing means to form a plane polarized light background from incident light, a liquid crystal panel capable of forming cross-polarized images against a plane polarized background, and a proximal movable polarizing means to distinguish images on liquid crystal panel from its plane polarized background. Linear translation of the movable polarizer partitions the liquid crystal panel into regions that are visible where there is optical alignment of the liquid crystal panel, background polarizer, and movable cross-polarizer. An optional remote polarizer complements the movable polarizer and provides a narrow viewing angle of images not visible on the liquid crystal panel. By creating a user defined visible, invisible, and narrow field of view of displayed information on an LCD assembly, electronic devices incorporating such a display can be made to provide computing privacy, accessibility to the device, strategic information separation, and information separation to multiple users.

Claims

1. An apparatus for displaying images on a liquid crystal display having partitionable selectively visible regions, comprising:

first polarizing means for forming planer polarized light background from incident light;

a liquid crystal display panel for forming images cross-polarized with polarized light background in substantially parallel alignment with said first polarizing means having a front side displaying said images;

moveable polarizing means for selectively covering at least a region of liquid crystal display panel, disposed in substantially parallel alignment with said liquid crystal display panel, disposed at the front side of said liquid crystal display panel, opposite said first polarizing means;

remote polarizing means disposed away from said liquid crystal display having polarization relative to said movable polarizing means which is one of planar-polarization or cross-polarization;

said remote polarization means operative for enabling a viewer looking through said remote polarizing means to view said images both covered and uncovered by said movable polarizing means; and

wherein said regions uncovered by said movable polarizing means are invisible for viewing without said remote polarizing means;

moving means connected to said movable polarizing means for displacing said movable polarizing means.

2. An apparatus for displaying images as claimed in claim 1, wherein said movable polarizing means are disposed proximal to said liquid crystal display and are linearly translatable.

3. An apparatus for displaying images as claimed in claim 1, including retaining means for retaining said movable polarizing means, wherein said retaining means comprise a transparent continuous belt having a polarized region forming said movable polarizing means, at least one roller for supporting said continuous belt, said belt tensioned against said roller, and wherein said movable polarizing means are located proximal to said liquid crystal display panel.

4. An apparatus for displaying images as claimed in claim 3, wherein said moving means comprises a knob attached to one of said rollers for providing linear displacement of said movable polarizer means.

5. The retaining means according to claim 3, including sprockets on at least one of said continuous belt and said rollers.

6. An apparatus for displaying images as claimed in claim 1 including retaining means for retaining said movable polarizing means, wherein said retaining means comprises a transparent film having a polarized region forming said movable polarizer and a spring return latching roller supporting said transparent film.

7. An apparatus for displaying images as claimed in claim 1, including retaining means for retaining said movable polarizing means, wherein said retaining means includes movable polarizer material, and an outer housing said liquid crystal panel for supporting said polarizer material wrapped around said housing.

8. An apparatus for displaying images as claimed in claim 1, including a handle attached to said movable polarizing means for effecting linear displacement of said polarizing means.

9. An apparatus for displaying images as claimed in claim 1, wherein said moving means comprise a motor and a transmission connected to said moving means so that rotation of said motor causes a linear displacement of said movable polarizing means.

10. The apparatus according to claim 9, wherein said motor has a motor control for controlling rotation of said motor, and progamming means in said motor control for programming said motor control.

11. The apparatus according to claim 9, wherein said motor has a motor control, including position sensing sensors connected with said motor control for sensing position of said movable polarizer with respect to said liquid crystal panel.

12. The apparatus according to claim 9, wherein said motor has a motor control and manual start/stop controls connected to said motor control.

13. The apparatus according to claim 9, wherein said motor has a motor control, and wherein motion of said motor is initiated by software control.

14. An apparatus for displaying images as claimed in claim 1, wherein remote polarizing means includes at least one lens being an article of eyewear.

15. The remote polarizing means accoring to claim 14, wherein said eyewear includes prescription corrective optics and a polarizing film coated onto said optics.

16. An apparatus for displaying images having partitionable regions, including selectively visible and invisible regions of displayed information comprising:

polarizing means for forming a plane-polarized light background from incident light;

a liquid crystal panel for forming cross-polarized images in parallel alignment with said plane-polarized background;

movable polarizing means for selectively distinguishing at least one of said images on said liquid crystal panel from said plane-polarized background by cross-polarization of one of said images or by cross-polarization of said background, including linear translation means connected to said polarizing means for forming partitions on said liquid crystal panel into regions that are visible where there is optical alignment of said liquid crystal panel with said background polarizing means, and with said movable polarizing means;

retaining means for retaining alignment of said movable polarizing means in linear movement of said movable polarizing means; and

translation means connected to said movable polarizing means for providing linear displacement of said movable polarizing means.

17. An apparatus for displaying images as claimed in claim 16, wherein said movable polarizing means include a plurality of movable polarizers for creating a plurality of covered and uncovered regions on said liquid crystal panel.

18. An apparatus for displaying images as claimed in claim 16, including retaining means, the apparatus comprising transparent panels disposed in parallel alignment with said movable polarizing means for sandwiching said movable polarizing means between said transparent panels.

19. An apparatus for displaying images as claimed in claim 16, wherein said movable polarizing means are disposed proximal to said liquid crystal display panel and operative for linear translation of movable polarizing means in relation to said liquid crystal display panel.

20. An apparatus for displaying images as claimed in claim 16, wherein said retaining means include an outer housing for housing said liquid crystal panel, and including movable polarizer material wrapped around said outer housing.

21. An apparatus for displaying images as claimed in claim 16, wherein said moving means include a handle connected to said movable polarizer for effecting linear displacement of said movable polarizer.

22. An apparatus for private portable computing comprising:

computing means;

data entry means connected to said computing means;

data storage means connected to said computing means;

display means connected to said computing means having selectively retentive partitionable regions for providing visible, invisible, and narrow field of view of displayed information.

23. An apparatus for private portable computing as claimed in claim 22, wherein said display means include polarizing means for forming a plane-polarized light background from incident light, a liquid crystal panel for forming cross-polarized images against said plane-polarized background, movable polarizing means disposed proximal to said liquid crystal panel for selectively displaying images on said liquid crystal panel against said plane-polarized background by cross-polarization between said images and said background, including linear translation means connected with said movable polarizing means for partitioning said liquid crystal panel into regions that are visible where there is optical alignment of said liquid crystal panel with said background polarizing means, and with said movable cross-polarizing means, remote polarizing means operative to complement said movable polarizer and provide a narrow viewing angle of said images in regions where there is no optical alignment of said liquid crystal panel with said background polarizing means, and with said movable cross-polarizing means, and remote polarizing means being generally plane-polarized to said movable polarizer.