Memory device capable of one-time data writing and repeated data reproduction, and method and display apparatus for operating the memory device
Provided are a memory device where data may be recorded one time and/or reproduced repeatedly, and a method and display apparatus for operating the memory device. The memory device may include a program area having a plurality of memory cells and a spare area having a plurality of memory cells. The memory device may include a memory cell layer having the program area and the spare area. The memory cell layer may include a plurality of vertically stacked memory cell layers. Each of the plurality of memory cell layers may include the program area and the spare area. The program area and the spare area may be either vertical or horizontal to one another.
1. A memory device capable of only one-time data writing and repeated data reproduction comprising:
a program area including a plurality of memory cells; and
a spare area including a plurality of memory cells,
wherein at least one of at least two vertically stacked memory modules includes only the program area, and another of the at least two vertically stacked memory modules includes only the spare area.
2. The memory device of claim 1 , wherein the at least two memory modules constitute one or more memory module units, wherein each of the units including two or more memory modules.
3. The memory device of claim 1 , wherein at least one memory module selected from among the at least two memory modules includes at least two separate memory modules horizontally disposed to one another.
4. The memory device of claim 1 , wherein data is dispersedly recorded in the program area and the spare area, and
wherein less than about 50% of the data is recorded in the spare area.
5. A display apparatus comprising a port configured to connect to the memory device of claim 4 .
6. The memory device of claim 1 , wherein all of the memory cells of the program area and the spare area are in an off-state, or a portion of the memory cells of the program area and the spare area is in an on-state, and the others of the memory cells of the program area and the spare area is in an off-state.
7. A display apparatus comprising a port configured to connect to the memory device of claim 6 .
8. The memory device of claim 1 , further comprising:
a memory interface and controller connected to the memory module; and
a main interface connected to the memory interface and controller and to an external display element.
9. The memory device of claim 8 , further comprising:
an operation enhancing unit enhancing an operation of the memory device between the memory interface and controller and the main interface.
10. A display apparatus comprising a port configured to connect to the memory device of claim 8 .
11. The memory device of claim 1 , wherein the at least two memory modules share a wiring.
12. The memory device of claim 1 , wherein an insulating layer is between the at least two memory modules.
13. The memory device of claim 1 , wherein each of the memory cells includes two wirings, a diode and an insulating layer sequentially stacked between the two wirings, or a portion of the memory cells includes only the two wirings and a diode between the two wirings.
14. The memory device of claim 13 , wherein the diode is one of a PN diode, a Schottky diode, and a back-to-back diode.
15. A display apparatus comprising a port configured to connect to the memory device of claim 1 .
16. The display apparatus of claim 15 , wherein the port has a depth corresponding to the entire length or a partial length of the memory device.
17. The display apparatus of claim 15 , wherein the port and the memory device are connected through a cable.
18. A method of operating a memory device capable of only one-time data writing and repeated data reproduction comprising:
providing a program area including a plurality of memory cells, and a spare area including a plurality of memory cells, wherein at least one of at least two vertically stacked memory modules includes only the program area, and another of the at least two vertically stacked memory modules includes only the spare area; and
simultaneously reading data from the at least two memory modules.
19. The method of claim 18 ,
wherein a part of the data is recorded in the spare area.
20. The method of claim 18 ,
wherein a portion of the data is recorded in the spare area.
21. A method of operating a memory device capable of only one-time data writing and repeated data reproduction comprising:
providing a program area including a plurality of memory cells, and a spare area including a plurality of memory cells, wherein at least one of at least two vertically stacked memory modules includes only the program area, and another of the at least two vertically stacked memory modules includes only the spare area; and
dispersedly recording data in the at least two memory modules.
22. The method of claim 21 , further comprising:
recording a portion of the data in the spare area.
23. The method of claim 22 , wherein recording the portion of the data in the spare area comprises:
checking for the data incorrectly recorded from among data dispersedly recorded in the at least two memory modules; and
recording correct data corresponding to the data incorrectly recorded in the spare area.