公开(公告)号：US06879091B2

公开(公告)日：2005-04-12

申请号：US10452017

申请日：2003-05-30

Applicant: Shankar Madras Venugopal ,  Alok M. Srivastava ,  Holly Ann Comanzo ,  Vikas Midha ,  William Winder Beers ,  Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam

Inventor： Shankar Madras Venugopal ,  Alok M. Srivastava ,  Holly Ann Comanzo ,  Vikas Midha ,  William Winder Beers ,  Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam

IPC: H01J1/144 ,  H01J61/067 ,  H01J61/073 ,  H01J1/38

CPC classification number: H01J1/144 ,  H01J61/0677 ,  H01J61/0737

Abstract: An electron emissive composition comprises a barium tantalate composition in an amount of about 50 to about 95 wt %; and a ferroelectric oxide composition in an amount of about 5 to about 50 wt %, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition in an amount of about 50 to about 95 wt % with a ferroelectric oxide composition in an amount of about 5 to about 50 wt % to form an electron emissive precursor composition, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition; and sintering the composition at a temperature of about 1000° C. to about 1700° C.

Abstract translation: 电子发射组合物包含量为约50至约95重量％的钽酸钡组合物; 和铁电氧化物组合物，其量为约5至约50重量％，其中重量百分比基于钽酸钡组合物和铁电氧化物组合物的总重量。 制造电子发射组合物的方法包括将约50至约95重量％的钽酸钡组合物与约5至约50重量％的量的铁电氧化物组合物混合以形成电子发射前体组合物，其中 重量百分比基于钽酸钡组合物和铁电氧化物组合物的总重量; 并在约1000℃至约1700℃的温度下烧结该组合物。

公开(公告)号：US07077980B2

公开(公告)日：2006-07-18

申请号：US10836353

申请日：2004-05-03

Applicant: Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam ,  Shankar Madras Venugopal ,  Anant Achyut Setlur ,  Alok Mani Srivastava ,  Holly Ann Comanzo ,  Venkatesan Manivannan ,  William Winder Beers

Inventor： Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam ,  Shankar Madras Venugopal ,  Anant Achyut Setlur ,  Alok Mani Srivastava ,  Holly Ann Comanzo ,  Venkatesan Manivannan ,  William Winder Beers

IPC: C09K11/55 ,  C09K11/62 ,  C09K11/64 ,  H01J29/20 ,  H01J63/04 ,  H01J1/63 ,  H01J6/20

CPC classification number: H01J61/44 ,  C09K11/7734 ,  H01L33/502

Abstract: A phosphor comprises europium, at least two alkaline-earth metals, and at least a Group-13 metal. In one embodiment, the phosphor has a formula selected from the group consisting of Sr4-a-zAaEuzD12O22 and Sr4-a-zAaEuzD14O25; wherein A is at least an alkaline-earth metal other than strontium; D is an element selected from the group consisting of Group-13 metals, group-3 metals, and rare-earth metals; 0 0. The phosphor can be used in light sources and displays.

Abstract translation: 荧光体包括铕，至少两种碱土金属和至少13族金属。 在一个实施方案中，所述荧光体具有选自Sr 4 -Z 2 O 3， 22和/或S 14和/或S > O 0。 磷光体可用于光源和显示器。

公开(公告)号：US06849996B2

公开(公告)日：2005-02-01

申请号：US10452037

申请日：2003-05-30

Applicant: Shankar Madras Venugopal ,  Alok M. Srivastava ,  Holly Ann Comanzo ,  Vikas Midha ,  William Winder Beers ,  Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam

Inventor： Shankar Madras Venugopal ,  Alok M. Srivastava ,  Holly Ann Comanzo ,  Vikas Midha ,  William Winder Beers ,  Gopi Chandran Ramachandran ,  Mukunda Srinivas Adyam

IPC: C01G35/00 ,  C01G1/02 ,  H01J1/00 ,  H01J1/14 ,  H01J1/146 ,  H01J1/38 ,  H01J1/48 ,  H01J9/04 ,  H01J61/04 ,  H01J61/06 ,  H01J61/067 ,  H01J61/073

CPC classification number: H01J1/146 ,  H01J1/14 ,  H01J61/0677 ,  H01J61/0737

Abstract: An electron emissive composition comprises a barium tantalate composition of the formula (Ba1−x, Cax, Srp, Dq)6(Ta1−y, Wy, Et, Fu, Gv, Caw)2O(11±δ) where δ is an amount of about 0 to about −3; and wherein D is either an alkali earth metal ion or an alkaline earth ion; E, F, and G, are alkaline earth ions and/or transition metal ion; x is an amount of up to about 0.7; y is an amount of up to about 1; p and q are amounts of up to about 0.3; and t is an amount of about 0.05 to about 0.10, u is an amount of up to about 0.5, v is an amount of up to about 0.5 and w is an amount of up to about 0.25. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition with a binder; and sintering the barium tantalate composition with the binder at a temperature of about 1000° C. to about 1700° C.

Abstract translation: 电子发射组合物包含式（Ba1-x，Cax，Srp，Dq）6（Ta1-y，Wy，Et，Fu，Gv，Caw）2O（11±δ）的钽酸钡组合物，其中δ是量 约0至约-3; 并且其中D是碱土金属离子或碱土金属离子; E，F和G是碱土离子和/或过渡金属离子; x是高达约0.7的量; y是高达约1的量; p和q是高达约0.3的量; 并且t为约0.05至约0.10的量，u为至多约0.5的量，v为至多约0.5的量，w为高达约0.25的量。 制造电子发射组合物的方法包括将钡钽酸盐组合物与粘合剂混合; 并在约1000℃至约1700℃的温度下用粘合剂烧结钽酸钡组合物。