Color sequential display panels

• US 5,642,129 A
• Filed: 03/23/1994
• Issued: 06/24/1997
• Est. Priority Date: 03/23/1994
• Status: Expired due to Term

• Current Assignee: Kopin Corporation
• Original Assignee: Kopin Corporation
• Inventors: Zavracky, Matthew, Chern, Wen-Foo
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): CHIN, VIVIAN C
• Application Number:
  US08/216,817
• Time in Patent Office: 1,189 Days
• Field of Search: 345/89, 345/87, 345/88, 345/92, 345/90, 345/91, 345/100, 345/204, 345/150, 345/151, 437/63, 359/53, 348/758
• US Class Current: 345/100
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 2027/0132 comprising binocular systems
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0156 with optionally usable elements
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 5/30 Polarising elements light-modulating devices with active elements G02F1/00
• CPC Class Codes: G06F 1/163 Wearable computers, e.g. on a belt
• CPC Class Codes: H04N 9/30 using solid-state colour display devices
• CPC Class Codes: H04N 9/3117 by using a sequential colour filter producing two or more colours simultaneously, e.g. by creating scrolling colour bands

Abstract

A color active matrix display system allows random access of pixel electrodes. The control electronics is fabricated with the active matrix circuitry using single crystal silicon technology. The control electronics includes a random access data scanner and random access spec scanners. By selectively actuating pixel electrodes in the active matrix display region, compressed video information can be directly displayed on the active matrix display panel. Color stripes are used to generate sequential color systems to produce a color image from the active matrix display panel.

Claims

1. An integrated circuit random access video display for displaying an image from a video source, the integrated circuit comprising:

an active matrix display region having an array of pixel electrodes and an array of pixel transistors, the pixel transistors formed from single crystal silicon material and registered to the array of pixel electrodes for actuating the pixel electrodes in response to an active matrix drive signal; and

an active matrix control circuit interconnected to the active matrix display region for translating a video signal received from the video source into active matrix drive signals, the active matrix drive signals including a line clock signal and a selectable line address signal for random access addressing of selected pixel transistors, the active matrix control circuit including;

an addressing circuit for randomly addressing the selected pixel transistors and generating the line address signal;

at least one random access select line scanner for enabling an addressed row of pixel transistors in response to the line clock signal and the line address signal; and

a column driver for providing an actuation signal to the enabled row of pixel transistors.

2. The integrated circuit of claim 1 wherein the video signal is a composite video signal.

3. The integrated circuit of claim 1 wherein the video signal is an analog RGB signal.

4. The integrated circuit of claim 1 further comprising a video controller for providing timing information to the select scanner and column driver.

5. The integrated circuit of claim 1 further comprising a video memory for storing at least one video image from digital data representing the video image.

6. The integrated circuit of claim 5 wherein the video memory comprises at least one frame buffer.

7. The integrated circuit of claim 1 wherein the array of pixel electrodes is at least a 1280×

1024 array.

8. The integrated circuit of claim 1 wherein the pixel electrodes are individually addressable by the control circuit.

9. The integrated circuit of claim 1 wherein the array of pixel transistors are bonded to a substrate with an adhesive.

10. The integrated circuit of claim 1 wherein the active matrix drive signals further include a plurality of video data channels for providing actuation signals to the selected pixel transistors.

11. The integrated circuit of claim 10 wherein the control circuit selects a range of display rows which are to display a selected color from a plurality of displayable colors.

12. The integrated circuit of claim 11 wherein the range of display rows is a plurality of contiguous display rows.

13. The integrated circuit of claim 10 wherein the video channels are arranged so as to reduce interference between the channels.

14. The integrated circuit of claim 1 wherein the active matrix control circuit facilitates center-to-edge and edge-to-center addressing of the pixel transistors.

15. The integrated circuit of claim 1 wherein the active matrix control circuit transmits the address signal over a line address bus.

16. The integrated circuit of claim 1 wherein the active matrix control circuit scans the active matrix display region in a non-linear pattern.

17. A color sequential active matrix display system for displaying a color image from a video source, the system comprising:

a light source for generating light;

an integrated circuit random access video display including an active matrix display region interconnected with a control circuit, the display region having an array of pixel electrodes, an array of pixel transistors and an active matrix control circuit, the pixel transistors formed from single crystal silicon material and registered to the pixel electrodes, the control circuit translating a video signal received from the video source into active matrix drive signals which include a line clock signal and a selectable line address signal for random access addressing of selected pixel transistors, the selected pixel transistors actuating the pixel electrodes in response to the active matrix drive signals, the control circuit including;

an addressing circuit for randomly addressing the selected pixel transistors and generating the line address signal;

at least one random access select line scanner for enabling an addressed row of pixel transistors in response to the line clock signal and the line address signal;

a column driver for providing an actuation signal to the enabled row of pixel transistors; and

an optical system coupling the video display to the light source, the optical system separating light from the light source into a plurality of colors, each color being directed onto each pixel electrode in temporal sequence.

18. The color sequential active matrix display system of claim 17 wherein the plurality of colors comprises red, green and blue.

19. The color sequential active matrix display system of claim 17 wherein the optical system includes a rotating prism.

20. The color sequential active matrix display system of claim 17 wherein each color is directed onto a plurality of contiguous lines of electrodes.

21. In an integrated circuit random access video display, a method of displaying an image from a video source, comprising the steps of:

providing an active matrix display region having an array of pixel electrodes and an array of pixel transistors, the pixel transistors formed from single crystal silicon material and registered to the array of pixel electrodes for actuating the pixel electrodes in response to an active matrix drive signal;

providing an active matrix control circuit interconnected to the active matrix display region; and

in the control circuit, translating a video signal received from the video source into active matrix drive signals, the active matrix drive signals including a line clock signal and a selectable line address signal for random access addressing of selected pixel transistors by the steps of;

in an addressing circuit, randomly addressing the selected pixel transistors and generating the line address signal;

an at least one random access select line scanner, enabling an addressed row of pixel transistors in response to the line clock signal and the line address signal; and

in a column driver, providing an actuation signal to the enabled row of pixel transistors.

22. The method of claim 21 further comprising the step of providing timing information from a video controller to the select scanner and column driver.

23. The method of claim 21 further comprising the step of storing at least one video image in a video memory from digital data representing the video image.

24. The method of claim 21 wherein the step of translating further comprises providing actuation signals to the selected pixel transistors using a plurality of video data channels.

25. The method of claim 24 wherein the step of translating further comprises selecting a range of display rows which are to display a selected color from a plurality of displayable colors.

26. The method of claim 24 wherein the step of providing actuation signals further comprises arranging the video channels so as to reduce interference between the channels.

27. The method of claim 21 wherein the step of translating further comprises transmitting the address signal over a line address bus.

28. The method of claim 21 wherein the step of translating further comprises scanning the active matrix display region in a non-linear pattern.