Single crystal silicon arrayed devices for projection displays

• US 5,581,385 A
• Filed: 03/24/1995
• Issued: 12/03/1996
• Est. Priority Date: 12/31/1990
• Status: Expired due to Term

• Current Assignee: Kopin Corporation
• Original Assignee: Kopin Corporation
• Inventors: Salerno, Jack P., Zavracky, Paul M., Spitzer, Mark B.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Parker, Kenneth
• Application Number:
  US08/410,571
• Time in Patent Office: 620 Days
• Field of Search: 359/41, 359/48, 359/8.3, 359/36, 359/40, 353/30, 353/31, 353/103, 353/120, 353/122, 353/DIG. 5, 358/60, 358/61
• US Class Current: 349/58
• CPC Class Codes: A61B 3/113 for determining or recording eye movement
• 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 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 2027/0198 System for aligning or maintaining alignment of an image in a predetermined direction
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• 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: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence
• CPC Class Codes: G02F 1/13613 the semiconductor element being formed on a first substrate and thereafter transferred to the final cell substrate
• CPC Class Codes: G03B 21/001 Slide projectors
• CPC Class Codes: G03B 21/006 using LCD's
• CPC Class Codes: G03B 21/10 Projectors with built-in or built-on screen
• CPC Class Codes: G03B 21/2053 Intensity control of illuminating light controlled by video signal processing H04N5/74 or H04N9/31
• CPC Class Codes: G03B 21/28 Reflectors in projection beam in illumination beam G03B21/2066
• CPC Class Codes: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 2300/0809 Several active elements per pixel in active matrix panels
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/041 : Temperature compensation
• CPC Class Codes: G09G 2320/043 : Preventing or counteracting the effects of ageing
• CPC Class Codes: G09G 2340/0464 : Positioning
• CPC Class Codes: G09G 2370/042 : for monitor identification
• CPC Class Codes: G09G 3/30 : using electroluminescent panels
• CPC Class Codes: G09G 3/36 : using liquid crystals
• CPC Class Codes: G09G 3/3607 : for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127
• CPC Class Codes: G09G 3/3614 : Control of polarity reversal in general
• CPC Class Codes: G09G 3/3648 : using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: H01L 21/8221 : Three dimensional integrated circuits stacked in different levels
• CPC Class Codes: H01L 2221/68359 : used as a support during manufacture of interconnect decals or build up layers
• CPC Class Codes: H01L 2221/68363 : used in a transfer process involving transfer directly from an origin substrate to a target substrate without use of an intermediate handle substrate
• CPC Class Codes: H01L 25/0756 : Stacked arrangements of devices
• CPC Class Codes: H01L 27/0688 : Integrated circuits having a three-dimensional layout
• CPC Class Codes: H01L 27/12 : the substrate being other than a semiconductor body, e.g. an insulating body
• CPC Class Codes: H01L 27/1266 : the substrate on which the devices are formed not being the final device substrate, e.g. using a temporary substrate
• CPC Class Codes: H01L 27/1281 : by using structural features to control crystal growth, e.g. placement of grain filters
• CPC Class Codes: H01L 27/156 : two-dimensional arrays
• CPC Class Codes: H01L 29/66772 : Monocristalline silicon transistors on insulating substrates, e.g. quartz substrates H01L29/66666 takes precedence; thin film FinFETs H01L29/66795
• CPC Class Codes: H01L 29/786 : Thin film transistors, i.e. transistors with a channel being at least partly a thin film transistors having only the source or the drain region on an insulator layer H01L29/0653; thin film FinFETs H01L29/785
• CPC Class Codes: H01L 29/78603 : characterised by the insulating substrate or support H01L29/78657 takes precedence
• CPC Class Codes: H01L 29/78648 : arranged on opposing sides of the channel
• CPC Class Codes: H01L 29/78654 : Monocrystalline silicon transistors
• CPC Class Codes: H01L 2924/00 : Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 : Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 2924/09701 : Low temperature co-fired ceramic [LTCC]
• CPC Class Codes: H01L 33/0062 : for devices with an active region comprising only III-V compounds
• CPC Class Codes: H01L 33/405 : Reflective materials
• CPC Class Codes: H01S 5/0217 : Removal of the substrate
• CPC Class Codes: H04N 5/70 : Circuit details for electroluminescent devices
• CPC Class Codes: H04N 5/74 : Projection arrangements for image reproduction, e.g. using eidophor
• CPC Class Codes: H04N 5/7441 : the modulator being an array of liquid crystal cells
• CPC Class Codes: H04N 5/7491 : of head mounted projectors
• CPC Class Codes: H04N 9/3105 : for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators simultaneous projection in colour photography G03B33/10; beam splitting or combining systems per se G02B27/10
• CPC Class Codes: H04N 9/3108 : by using a single electronic spatial light modulator
• CPC Class Codes: H04N 9/312 : Driving therefor driving of electronic spatial light modulators in displays other than projection devices G09G3/34, G09G3/36; control of liquid crystal elements G02F1/133; control of micromechanical modulators G02B26/08
• CPC Class Codes: H04N 9/3141 : Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14
• CPC Class Codes: H04N 9/3173 : wherein the projection device is specially adapted for enhanced portability
• CPC Class Codes: H05B 33/12 : Light sources with substantially two-dimensional radiating surfaces

Abstract

A display panel is formed using a single crystal thin-film transistors that are transferred to substrates for display fabrication. Pixel arrays form light valves or switches that can be fabricated with control electronics in the thin-film material prior to transfer. The resulting circuit panel is then incorporated into a projection display system with a light emitting or liquid crystal material to provide the desired light valve.

Claims

1. A method of displaying an image with a slide projector having a projector body, a light source, an optical system and a chamber in which an image forming element can be placed for projection onto an external viewing surface, comprising the steps of:

providing a housing adapted to be positioned over a slide projector body;

providing an active matrix display movably mounted to the housing and having a storage position within the housing and an operating position outside of the housing;

positioning the housing over the projector body;

moving the active matrix display from the storage position into the operating position such that the active matrix display is positioned in a slide projector chamber; and

actuating the active matrix display to selectively transmit light from the light source to the optical system for projection of an image formed on the active matrix display onto the external viewing surface.

2. The method of claim 1 further comprising providing an electronics unit for actuating the active matrix display, the actuated display selectively transmitting light to provide images.

3. The method of claim 2 wherein the electronics unit receives computer data, the electronics unit being responsive to the computer data, and wherein the step of actuating comprises:

actuating the active matrix display to selectively transmitting light to provide computer-based images.

4. The method of claim 2 wherein the electronics unit receives video signals, the electronics unit responsive to the video signals and actuating the active matrix display.

5. A method of displaying an image with a light source, an optical system and an image forming element for projection onto a viewing surface, comprising the steps of:

providing a housing and a liquid crystal display movably mounted to the housing and having a storage position within the housing and an operating position outside of the housing;

moving the liquid crystal display from the storage position into the operating position such that the liquid crystal display is positioned between the light source and the optical system of a slide projector body; and

actuating the liquid crystal display to selectively transmit light from the light source to the optical system for projection of an image formed on the liquid crystal display onto the viewing surface.

6. The method of claim 5 further comprising providing an electronics unit within the housing for actuating the liquid crystal display, the actuated display selectively transmitting light to provide images.

7. The method of claim 6 wherein the electronics unit receives computer data, the electronics unit being responsive to the computer data, and wherein the step of actuating comprises:

actuating the liquid crystal display to selectively transmitting light to provide computer-based images.

8. The method of claim 6 wherein the electronics unit receives video signals, the electronics unit responsive to the video signals and actuating the liquid crystal display.

9. The method of claim 5 wherein the liquid crystal display forms images from three primary colors.

10. The method of claim 5 further comprising transmitting light through a plurality of color filter elements.

11. The method of claim 5 further comprising providing a liquid crystal display having a diagonal measurement in the range of 1-2 inches.

12. A method of displaying an image with a slide projector having a projector body, a light source, an optical system and a chamber in which an image forming element can be placed for projection onto an external viewing surface, comprising the steps of:

providing a housing with a light valve display adapted to be positioned relative to a slide projector body, the light valve display having a storage position at a first position relative to the housing and an operating position at a second position relative to the housing;

moving the light valve display relative to the housing from the first position to the operating position such that the light valve display is positioned in a slide projector chamber within the projector body; and

actuating the light valve display to selectively transmit light from the light source to the optical system for projection of an image formed on the light valve display onto the external viewing surface.

13. The method of claim 12 further comprising providing an electronics unit for actuating the light valve display, the actuated display selectively transmitting light to provide images.

14. The method of claim 13 wherein the electronics unit receives computer data, the electronics unit being responsive to the computer data, and the step of actuating comprises:

actuating the light valve display to selectively transmitting light to provide computer-based images.

15. The method of claim 13 wherein the electronics unit receives video signals, the electronics unit responsive to the video signals and actuating the light valve display.

16. A method of claim 12 further comprising providing a liquid crystal display and a driver circuit that is dimensioned to be inserted in the slide projector chamber of the projector body.

17. The method of claim 12 further comprising providing a slide projector body wherein the chamber is dimensioned to receive a 2 inch by 2 inch photographic slide.

18. The method of claim 12 wherein the light valve display comprises an array of pixel electrodes are bonded to a glass substrate with an adhesive.

19. The method of claim 12 wherein the light valve display is a multi-colored active matrix display.

20. The method of claim 12 wherein the light valve array has at least 800 lines per inch.

21. The method of claim 12 wherein the step of moving the light valve display further comprises rotating the light valve display relative to the housing.

22. The method of claim 12 wherein the step of moving the light valve display further comprises sliding the light valve display along a track.

23. The method of claim 12 further comprising an electronics assembly mounted within the housing and including a video input connector that receives a video format signal, a signal processing circuit connected to the connector that receives the video format signal and generates video output signals and synchronization signals that are received by a column driver and a row driver of the light valve display, and a clock connected to the signal processing circuit, the column driver and the row driver.

24. The method of claim 12 further comprising a wireless receiver mounted to the housing and connected to the electronics unit.