Wireless telephone display system

• US 6,073,034 A
• Filed: 05/14/1997
• Issued: 06/06/2000
• Est. Priority Date: 10/31/1996
• Status: Expired due to Term

• Current Assignee: Kopin Corporation
• Original Assignee: Kopin Corporation
• Inventors: Richard, Alan, Jacobsen, Jeffrey, Fan, John C. C., Pombo, Stephen A., Zavracky, Matthew, Bumgardner, Rodney
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): Ferguson, Keith
• Application Number:
  US08/855,909
• Time in Patent Office: 1,119 Days
• Field of Search: 455/566, 455/556, 455/557, 455/575, 455/90, 455/425, 455/347, 455/346, 379/433, 379/428, 345/102, 345/103, 345/108, 345/87
• US Class Current: 455/566
• CPC Class Codes: G02B 25/002 Magnifying glasses
• CPC Class Codes: G09G 2300/0408 Integration of the drivers onto the display substrate
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2310/0283 Arrangement of drivers for different directions of scanning
• CPC Class Codes: G09G 2310/063 Waveforms for resetting the whole screen at once
• CPC Class Codes: G09G 2320/0209 Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
• CPC Class Codes: G09G 2320/041 Temperature compensation
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2340/0492 Change of orientation of the displayed image, e.g. upside-down, mirrored
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• 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: G09G 3/3659 the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
• CPC Class Codes: G09G 3/3688 suitable for active matrices only
• CPC Class Codes: G09G 5/18 Timing circuits for raster scan displays specially adapted for television H04N ; synchronisation between the display unit and other display units, videodisc player G09G5/12
• CPC Class Codes: G09G 5/39 Control of the bit-mapped memory
• CPC Class Codes: G09G 5/391 Resolution modifying circuits, e.g. variable screen formats
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03
• CPC Class Codes: H04M 1/021 : using combined folding and rotation motions combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0214 : Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0247 : comprising more than two body parts
• CPC Class Codes: H04M 1/0254 : comprising one or a plurality of mechanically detachable modules
• CPC Class Codes: H04M 1/0264 : for a camera module assembly
• CPC Class Codes: H04M 2250/20 : including a rotatable camera
• CPC Class Codes: H04N 7/142 : Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04N 9/3141 : Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED illumination system and cellular communication or processor circuits within a compact housing to provide communication devices such as pagers, telephones, televisions, and hand held computer or card reader devices with a compact high resolution data and/or video display.

Claims

1. A wireless telephone having a display panel comprising:

a handset housing having a speaker and a microphone within the housing;

a transceiver system within the handset housing that receives audio and image data;

a display module housing that is connected to the handset housing and that houses a liquid crystal active matrix display, a backlight and a lens that magnifies a displayed image on the matrix display, the matrix display having at least 75,000 pixel electrodes defining an active area of less than 160 mm² and the backlight including a light emitting diode (LED); and

a display control circuit connected to the transceiver system and the matrix display.

2. The wireless telephone of claim 1 wherein the display module housing moves relative to the handset.

3. The wireless telephone of claim 1 wherein the handset has a first display module port and a second display module port such that the display module can be electrically connected to the tranceiver at the first port or the second port.

4. The wireless telephone of claim 1 wherein the display module can be moved from a storage position within the handset to an operating position outside of the handset.

5. The wireless telephone of claim 1 wherein the handset housing comprises a first housing element and a second housing element that is rotatably attached to the first housing element, the display module being attached to the second housing element.

6. The wireless telephone of claim 1 wherein the backlight comprises a light emitting diode that is optically coupled to the display with the module housing having a reflective interior surface and a diffuser.

7. The wireless telephone of claim 1 wherein the backlight is optically coupled to the matrix display with a side illumination device.

8. The wireless telephone of claim 1 further comprising a second numeric display on the handset.

9. The wireless telephone of claim 1 further comprising a second numeric display on the handset.

10. A method of displaying an image on a wireless telephone having a display panel comprising:

providing a handset housing having a speaker and a microphone within the housing;

providing a transceiver system within the housing that receives audio and image data;

providing a display module having a liquid crystal active matrix display, a backlight and a lens that magnifies a displayed image on the matrix display, the matrix display having a plurality of pixel transistor circuits formed with a single crystal silicon material and at least 75,000 pixel electrodes defining an active area of the display of less than 160 mm² and the backlight including a plurality of light emitting diodes (LEDs); and

operating a display control circuit connected to the transceiver and the matrix display to display an image on the display.

11. The method of claim 10 further comprising moving the display module relative to the housing.

12. The method of claim 10 further comprising providing the handset with a first display module port and a second display module port such that the display module can be electrically connected to the transceiver at the first port or second port.

13. The method of claim 10 further comprising moving the display module from a storage position within the handset to an operating position outside of the handset.

14. The method of claim 10 further comprising providing a handset having a first housing element and a second housing element that is rotatably attached to the first housing element, the display module being attached to the second housing element.

15. A wireless telephone having a display panel comprising:

a handset housing having a speaker and a microphone within the housing;

a transceiver system within the handset housing that receives audio and image data;

a display module housing having a liquid crystal active matrix display, a backlight, a diffuser between the backlight and the display, and a lens that magnifies a displayed image on the matrix display, the display having a plurality of pixel transistor circuits formed with a single crystal silicon material and at least 75,000 pixel electrodes defining an active area of the display of less than 160 mm², the backlight including a red light emitting diode (LED), a green LED and a blue LED.

16. The wireless telephone of claim 15 wherein the matrix display moves relative to the handset housing.

17. The wireless telephone of claim 15 wherein the matrix display can be moved from a storage position to an operating position.

18. The wireless telephone of claim 15 wherein the display module housing comprises a first housing element and a second housing element that is rotatably attached to the first housing element, the matrix display being within the second housing element.

19. The wireless telephone of claim 15 wherein the backlight comprises a light emitting diode that is optically coupled to the display with a reflective interior surface of the module housing.

20. The wireless telephone of claim 15 wherein the backlight is optically coupled to the matrix display with a side illumination device.