Interactive display with tactile feedback

1. An electronic device comprising:

an interactive display having a keyboard-enabled mode and a keyboard-disabled mode, the interactive display comprising a first image display device disposed at a front surface of the electronic device and a physical keypad disposed at a back surface of the electronic device so that the first image display device faces in a direction opposite to a direction in which the physical keypad faces, the physical keypad comprises a plurality of physical keys,

wherein,

in the keyboard-disabled mode, the first image display device displays a plurality of imaged keys and the physical keypad is disabled so that the plurality of physical keys are lowered relative to the back surface and the physical keypad does not provide tactile feedback to a user,

in the keyboard-enabled mode, the first image display device does not display the plurality of imaged keys and displays other image data, and the plurality of physical keys of the physical keypad are raised relative to the back surface to provide tactile feedback to a user, and

the plurality of physical keys perform a different function from the plurality of imaged keys so that the plurality of physical keys and the plurality of imaged keys form a combination keyboard, wherein the plurality of physical keys comprise only one of: 1) modifier, navigation, lock, editing and navigation keys; or 2) alphanumeric keys, and the plurality of imaged keys comprise only one of the other of: 1) modifier, navigation, lock, editing and navigation keys; or 2) alphanumeric keys.

2. The electronic device of claim 1 , further comprising a second image display device disposed at the back surface.

3. The electronic device of claim 1 , wherein the physical keypad disposed at the back surface comprises one or more physical keys that control activation of the imaged keys within the imaged keypad.

4. The electronic device of claim 1 , further comprising:

a sensor that detects user interaction with the physical keypad disposed on the back surface; and

an image generator that displays within the first image display device an imaged representation of the user interaction with the physical keypad disposed on the back surface.

5. The electronic device of claim 4 , wherein the sensor comprises one or more of the following sensor types: a motion sensor, a thermal sensor and a pressure sensor.

6. The electronic device of claim 4 , wherein the imaged representation of the user interaction comprises an imaged depiction of the user's finger or thumb interacting with the imaged keypad.

7. The electronic device of claim 1 , wherein the front and back surfaces are opposite from one another.

8. The electronic device of claim 1 , wherein the front and back surfaces are angled relative to one another.

9. The electronic device of claim 1 , wherein the physical keypad comprises piezoelectric material.

10. The electronic device of claim 9 , wherein the piezoelectric material is quartz.

11. The electronic device of claim 1 , wherein the physical keypad comprises magnetostrictive material.

12. The electronic device of claim 1 , wherein the image display device is selected from one of the following types of image display devices: liquid crystal displays, digital light processor displays, plasma displays and light emitting diode displays.

13. The electronic device of claim 1 , wherein the electronic device is selected from one of the following types of electronic devices: cell phones, personal digital assistants, gaming devices, automatic teller machines and data input devices.

14. The electronic device of claim 1 , wherein the functions of the plurality of imaged and physical keys are user adjustable.