1. A method of forming a trench memory cell, the method comprising:
forming a trench capacitor within a substrate material, the trench capacitor including a node dielectric layer formed within a trench and a conductive capacitor electrode material formed within the trench in contact with the node dielectric layer;
forming a strap mask so as to cover one side of the trench and expose one side of the capacitor electrode material formed within the trench, recessing the exposed side of the capacitor electrode material and removing a portion of the node dielectric layer exposed by the recessing of the capacitor electrode material using the strap mask; and
forming a conductive buried strap material within the trench by filling a volume of the trench vacated by the removed portion of the node dielectric layer and recessed capacitor electrode material with the conductive buried strap material so as to define a single-sided buried strap within the trench;
wherein the single-sided buried strap is configured in a manner such that the deep trench capacitor is electrically accessible at only one side of the trench.
2. The method of claim 1, wherein the substrate comprises a silicon-on-insulator (SOI) substrate.
3. The method of claim 1, wherein the strap mask covers about one-half the trench.
4. The method of claim 1, further comprising forming a trench top oxide (TTO) material over the single-sided buried strap and the conductive capacitor electrode material.
5. The method of claim 4, wherein the node dielectric layer serves as an insulator to prevent electrical access to the other side of the trench with respect to the location of the single-sided buried strap.
6. The method of claim 4, wherein the trench top oxide material serves as an insulator to prevent electrical access to the other side of the trench with respect to the location of the single-sided buried strap.
7. A trench memory cell formed in accordance with the method of claim 5.
8. A trench memory cell formed in accordance with the method of claim 6.
9. A method of forming a trench memory device, the method comprising:
forming a trench capacitor within a silicon-on-insulator (SOI) substrate, the trench capacitor including a node dielectric layer formed within a trench and a trench polysilicon material formed within the trench in contact with the node dielectric layer, the trench polysilicon material serving as a capacitor electrode;
forming a strap mask so as cover one side of the trench;
recessing the exposed side of the trench polysilicon material, down to a level at least below an SOI layer of the SOI substrate;
removing a portion of the node dielectric layer exposed by the recessing of the trench polysilicon;
filling a volume of the trench vacated by the removed portion of the node dielectric layer and recessed trench polysilicon material with a polysilicon buried strap material; and
following removal of the strap mask, further recessing previously covered portions of the trench polysilicon material and the polysilicon buried strap material, thereby defining a single-sided buried strap.
10. The method of claim 9, wherein the strap mask covers about one-half the trench.
11. The method of claim 9, wherein the node electric layer serves as an insulator to prevent electrical contact between the SOI layer and the trench polysilicon material in the other side of the trench with respect to the location of the single-sided buried strap.
12. A trench memory device formed in accordance with the method of claim 11.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A network system to which a plurality of devices are connected, comprising:
a home server; and
at least one device that transmits an address assignment request message to the home server when it is connected to the network,
wherein if it is determined that the address assignment request message is transmitted by a plurality of indistinguishable devices, the home server assigns unique network addresses to the plurality of devices by commanding the plurality of devices to generate temporary addresses and assigning a unique address to each of the temporary addresses generated by the plurality of devices.
2. The network system set forth in claim 1, wherein the at least one device transmits the address assignment request message periodically after it is connected to the network.
3. The network system set forth in claim 2, wherein if the home server receives an address assignment request message, the home server waits from that point during a time interval that is longer than the period for the address assignment request message and shorter than double the period and determines that more than one device transmits address assignment request messages if two or more address assignment request messages having the same source address are received during the time interval.
4. The network system set forth in claim 1, wherein the address assignment request message transmitted by the at least one device to the home server has a network address comprising a factory-set product code and a logical address as its source address.
5. The network system set forth in claim 4, wherein the home server assigns unique network addresses to the plurality of devices by assigning a unique logical address to the factory-set logical address of each of the plurality of devices.
6. The network system set forth in claim 1, wherein the home server specifies the range of allowable temporary addresses when the home server commands the plurality of devices to generate temporary addresses.
7. The network system set forth in claim 6, wherein addresses included in the specified range are greater than the sum of the last address among addresses that have been assigned thus far and the number of the plurality of devices.
8. The network system set forth in claim 7, wherein the number of the plurality of devices is determined based on the number of address assignment request messages received during a predefined time interval after the reception of the initial address assignment request message.
9. The network system set forth in claim 7, wherein the home server assigns sequential network addresses corresponding to the generated temporary addresses to the plurality of devices, the sequential network addresses starting from the address one greater than the last address.
10. The network system set forth in claim 1, wherein if some of the temporary addresses generated according to the command for generating temporary addresses are identical, the home server retransmits the command for generating temporary addresses to the identical temporary address.
11. The network system set forth in claim 1, wherein if the number of address setup confirmation messages received after the home sever transmits the network addresses corresponding to the temporary addresses to the plurality of devices is not the same as the number of the assigned network addresses, the home server retransmits the command for generating temporary addresses to a part or all of the plurality of devices.
12. A method of assigning network addresses to devices connected to a network established in a house, conducted by a home server, comprising:
(a) determining if received address assignment request messages are transmitted by a plurality of devices;
(b) commanding the plurality of devices to generate temporary addresses and then receiving the generated temporary addresses, if it is determined that the address assignment request messages are transmitted by a plurality of devices; and
(c) assigning unique network addresses to the plurality of devices respectively by transmitting a message for assigning a unique address to each of the received temporary addresses.
13. The method set forth in claim 12, wherein the plurality of devices transmit the address assignment request messages periodically after the plurality of devices are connected to the network.
14. The method set forth in claim 13, wherein if an address assignment request message is received, the step (a) waits from that point during a time interval that is longer than the period for the address assignment request message and shorter than double the period and determines that a plurality of devices transmit the address assignment request messages if two or more address assignment request messages having the same source address are received during the time interval.
15. The method set forth in claim 12, wherein each of the address assignment request messages transmitted by the plurality of devices to the home server has a network address comprising a factory-set product code and a logical address as its source address.
16. The method set forth in claim 15, wherein the step (c) assigns unique network addresses to the plurality of devices by assigning a unique address to the factory-set logical address of each of the plurality of devices.
17. The method set forth in claim 12, wherein the step (b) specifies the range of allowable temporary addresses when commanding the plurality of devices to generate temporary addresses.
18. The method set forth in claim 17, wherein addresses included in the specified range are greater than the sum of the last address among addresses that have been assigned thus far and the number of the plurality of devices.
19. The method set forth in claim 18, wherein the number of the plurality of devices is determined based on the number of address assignment request messages received during a predefined time interval after the reception of the initial address assignment request message.
20. The method set forth in claim 18, wherein the step (c) assigns sequential network addresses corresponding to the received temporary addresses to the plurality of devices, the network addresses starting from the address one greater than the last address.
21. The method set forth in claim 12, wherein if some of the received temporary addresses are identical, the step (c) does not assign addresses and retransmits the command for generating temporary addresses to the identical temporary address.
22. The method set forth in claim 12, further comprising the step of:
(d) retransmitting the command for generating temporary addresses to a part or all of the plurality of devices if the number of address setup confirmation messages received after the step (c) is not the same as the number of the assigned network addresses.