Following are the full members announced today for the Open Handset Alliance. backed by Google: Aplix, Ascender Corp., Audience, Broadcom Corp., China Mobile, eBay (NSDQ: EBAY) Inc., Esmertec, HTC Corp., Intel (NSDQ: INTC) Corp., KDDI, Living Image, LG, Marvell Technology, Motorola (NYSE: MOT) Inc., NMS Communications, Noser, NTT DoCoMo, Nuance Communications Inc., Nvidia Corp., PacketVideo, Qualcomm (NSDQ: QCOM) Inc., Samsung Electronics, SiRF, SkyPop, SONiVOX, Sprint (NYSE: S) Nextel, Synaptics, TAT - The Astonishing Tribe, Telecom Italia, Telefónica SA, Texas Instruments, T-Mobile and Wind River Systems Inc.

Also, as to what their exact roles are in the alliance, see this WSJ story breaking that down. Some of the more interesting ones:
—Aplix Corp. makes mobile software, including a program used to print photos from a cameraphone.
—Ascender Corp.‘s software lets users select themed ringtones and wallpaper for their phones.
—Living Image is Japanese company that develops technology used to play images on cellphones.
—SONiVOX develops audio technology that allows music playback in mobile games
—TAT-The Astonishing Tribe is a Swedish firm that develops mobile user interfaces