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公开(公告)号：EP1498011A1
公开(公告)日：2005-01-19
申请号：EP03714586.9
申请日：2003-04-16
发明人： STILES, James, Alexander, Robert , MOORE, John, Wesley , PUGLIESE, Vincent, Joseph, Alfred , HAMADA, Hiroki , YOSHIDA, Isao
CPC分类号： C09K11/7706 , C09K11/7703 , C09K11/7731 , C09K11/7734 , H05B33/10 , H05B33/12 , H05B33/14 , H05B33/22 , H05B33/26 , Y10S428/917
摘要： A thin film phosphor for an electroluminescent device, the phosphor being selected from the group consisting of thioaluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor being activated by a rare earth metal and containing oxygen as a partial substitute for a portion of the sulphur in the crystal lattice of the thiogallate, thioindate or thioaluminate. The phosphor is a single phase homogeneous compound and provides improved luminance stability. An electroluminescent device comprising the thin film phosphor is also described and methods of making the phosphor of the invention.
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公开(公告)号：EP1352545A2
公开(公告)日：2003-10-15
申请号：EP02709927.4
申请日：2002-01-10
发明人： LI, Wu , XIN, Yongbao , WESTCOTT, Michael, R.
IPC分类号： H05B33/22
CPC分类号： H05B33/22 , Y10S428/917 , Y10T428/24942 , Y10T428/2495 , Y10T428/26
摘要： The performance and stability of thick film electroluminescent displays is enhanced by a non-porous layer inserted between the thick film dielectric layer and thin film phosphor structures in these displays. The inserted layer facilitates increased luminance, increased energy efficiency and improved operating stability.
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公开(公告)号：EP1346007A1
公开(公告)日：2003-09-24
申请号：EP01271929.0
申请日：2001-12-17
发明人： CHEONG, Dan, Daeweon
CPC分类号： C09K11/7731 , C09K11/08 , C09K11/7734 , C23C14/0623 , C23C14/30 , C23C14/548 , H01B3/02
摘要： A method for the deposition of a thin film of a pre-determined composition e.g. a phosphor, onto a substrate, in which the composition is a ternary, quaternary or higher composition, especially a composition selected from the group consisting of thioaluminates, thiogallates and thioindates of at least one element from Groups IIA and IIB of the Periodic Table. In the embodiment, the method comprises placing a pellet of at least one sulphide on a first source and placing a pellet of at least one sulphide on a second source, with one pellet containing dopant. Vapour deposition onto the substrate is effected with separate electron beams. The rate of vaporizing of the sulphides is monitored with separate shielded coating rate monitors. The temperature of the sources is controlled to obtain the composition on the substrate. The method is particularly used for deposition of ternary or quaternary phosphors on substantially opaque substrates in electroluminescent devices.
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公开(公告)号：EP1323337A1
公开(公告)日：2003-07-02
申请号：EP01966898.7
申请日：2001-08-30
发明人： CHEONG, Dan, Daeweon , WU, Xingwei
CPC分类号： C23C14/0623 , C09K11/7703 , C09K11/7731 , C09K11/886 , H05B33/14
摘要： A phosphor and a method of deposition. The phosphor comprises a composition of the formula M'aBa1-aM''2M'''4':RE, where M' is at least one element selected from magnesium and calcium, M'' is at least one element selected from aluminum, gallium and indium, M''' is at least one element selected from sulphur, selenium and tellurium, RE is at least one rare earth element, especially europium or cerium, and 0
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公开(公告)号：EP0842540B1
公开(公告)日：2001-12-19
申请号：EP95926352.6
申请日：1995-07-31
发明人： SINGH, Surendra, Pal
IPC分类号： H01L27/146
CPC分类号： H01L27/14643
摘要： A flat panel detector (20) for radiation imaging includes an array of pixels (22) arranged in rows and columns. Gate lines (24) interconnect the pixels of each row while source lines (26) interconnect the pixels of each column. A radiation transducer (CSE) is disposed over the array. Each pixel includes a TFT switch (38) having its gate electrode connected to a gate line (24) and its source electrode (42) connected to another gate line. The drain electrode (40) of TFT switch (38) constitutes the pixel electrode of pixel (22). The drain electrode and a bottom electrode (52) connected to source line (26) constitute a storage capacitor (CST). When TFT switch is biased and the drain electrode is charged, the drain electrode discharges through TFT switch on to the source terminal and to the gate line. This results in a release of the charge held by the bottom electrode which is sensed by a charge amplifier connected to the source line.
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16.发明公开YTTRIUM SUBSTITUTED BARIUM THIOALUMINATE PHOSPHOR MATERIALS 有权YTTRIUM-SUBSTITUIERTE BALIUM-THIOALUMINATE-PHOSPHORMATERIALIEN
公开(公告)号：EP1493307A1
公开(公告)日：2005-01-05
申请号：EP03707980.3
申请日：2003-03-24
CPC分类号： H05B33/14 , C09K11/752 , C09K11/7768 , C09K11/7786 , C09K11/892 , H05B33/22 , H05B33/26 , Y10S428/917
摘要： A thin film phosphor for an electroluminescent device, the phosphor being selected from the group consisting of thioaluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor being activated by a rare earth metal and containing a Group IIIB element as a partial substitute for a portion of aluminum, gallium or indium of said thiogallate, thioindate and thioaluminate. The phosphor provides improved luminance. An electroluminescent device comprising the thin film phosphor on a substrate is also described.
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公开(公告)号：EP1459283A1
公开(公告)日：2004-09-22
申请号：EP02787298.5
申请日：2002-12-23
发明人： CHENG, Chun-Fai
IPC分类号： G09G3/30
CPC分类号： G09G3/30 , G09G2330/023
摘要： The driving circuit incorporates a resonant circuit that is able to efficiently recover capacitative energy stored on the row of pixels and transfer it to another row of pixels as the rows are addressed. The resonant circuit comprises a step down transformer, a capacitator across the priminary winding, either the rows or columns of the display panel connected acorss the secondary winding and an input voltage and FET switches to drive the resonant circuit synchronous with the timing pulses governing the addressing of the display. The improvement of the present invention is an additional secondary winding that is connected to a rectifier and DC storage capacitor that is connected in series with the rows of columns of the panel. The additional circuit facilitates clamping of the driver voltage to a constant level irrespective of variations in the load due to the fluctuations in load impedance.
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公开(公告)号：EP1457094A1
公开(公告)日：2004-09-15
申请号：EP02784970.2
申请日：2002-12-16
发明人： ACCHIONE, Joe
摘要： The invention relates to improving the stability of the lower electrodes in an electroluminescent display employing a thick film dielectric. The invention is an encapsulated electrode comprising an electrode of an electrically conductive metallic film. A layer of encapsulating material is provided on an upper and/or lower surface of the electrode layer. The encapsulating material reduces the risk of the electrode from becoming discontinuous and losing its electrical conductivity.
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公开(公告)号：EP1393597A1
公开(公告)日：2004-03-03
申请号：EP02729686.2
申请日：2002-05-07
CPC分类号： H05B33/14 , C09K11/7767 , C09K11/7768 , C09K11/7774 , C09K11/7784 , C09K11/7786 , C09K11/7792
摘要： A thin film phosphor for an electroluminescent device, in which the phosphor is selected from the group consisting of thioaluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor is activated by a rare earth metal and co-activated with gadolinium. The phosphor provides improved luminance. An electroluminescent device comprising the thin film phosphor on a substrate is also described. Further aspects provide an electroluminescent device in which the thin film phosphor is adjacent to a thin film of zinc sulphide, preferably sandwiched between thin films of zinc sulphide.
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20.发明授权
公开(公告)号：EP0842541B1
公开(公告)日：2002-02-13
申请号：EP95926356.7
申请日：1995-07-31
发明人： WAECHTER, David , ZHAO, Wei , ROWLANDS, John , HUANG, Zhong, Shou
IPC分类号： H01L27/146
CPC分类号： H01L27/14643
摘要： A flat panel detector (20) for radiation imaging includes an array of transistor switches (38) each of which is associated with a pixel electrode (36). A radiation transducer (CSE) including a top electrode (72) and a radiation conversion layer (70) is disposed over the array. Means are positioned over dead zones between adjacent pixel electrodes to inhibit the accumulation of charge in the radiation conversion layer at the dead zones when the top electrode is biased and the flat panel detector is exposed to radiation. In one embodiment, the inhibiting means is constituted by islands (64) formed of semiconductor material between the array and the radiation transducer. Each island is positioned over a dead zone between adjacent pixel electrodes and contacts a pixel electrode to allow charges accumulated on the islands to drift to the pixel electrodes.
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