公开(公告)号：US20030000829A1

公开(公告)日：2003-01-02

申请号：US10214478

申请日：2002-08-05

Applicant: iFire Technology Inc.

Inventor： Alexander Kosyachkov

IPC: C23C014/32

CPC classification number: C09K11/7731 ,  C23C14/0057 ,  C23C14/0623

Abstract: A method of deposition of a phosphor in a single-source sputtering process, in which the phosphor is selected from the group consisting of ternary, quaternary or higher thioaluminate, thiogallate and thioindate phosphors, and composites thereof, synthesized with cations selected from Groups IIA and IIB of the Periodic Table of Elements. The phosphor is of a pre-determined composition of elements. The method comprising sputtering in a hydrogen sulphide atmosphere from a single source composition so as to deposit a composition on a substrate. The composition of the targets of the single source has a relative increase in concentration of elements of the phosphor that have a lower atomic weight compared to other elements in said phosphor. The relative increase is controlled such that deposition of the pre-determined composition is effected on the substrate. Preferred phosphors are barium thioaluminate (BaAl2S4:Eu), and barium magnesium thioaluminates.

Abstract translation: 一种在单源溅射工艺中沉积磷光体的方法，其中荧光体选自三元，四元或更高硫代铝酸盐，硫代镓酸盐和硫酸盐磷光体及其复合材料，其与选自IIA族和 元素周期表IIB。 荧光体是元素的预定组成。 该方法包括在单一源组合物中在硫化氢气氛中溅射以将组合物沉积在基底上。 与所述荧光体中的其它元素相比，单源的靶的组成相对于具有较低原子量的荧光体元素的浓度相对增加。 控制相对增加使得预先确定的组合物在衬底上进行沉积。 优选的磷光体是硫铝酸钡（BaAl 2 S 4：Eu）和硫铝酸钡镁。

公开(公告)号：US20040033307A1

公开(公告)日：2004-02-19

申请号：US10641231

申请日：2003-08-14

Applicant: IFIRE TECHNOLOGY, INC.

Inventor： Xingwei Wu ,  George A. Kupsky

IPC: B05D005/12 ,  B05D003/12

CPC classification number: H05B33/145 ,  H05B33/10 ,  H05B33/12 ,  H05B33/22

Abstract: A patterned phosphor structure, and EL laminate containing same, forming red, green and blue sub-pixel phosphor elements for an AC electroluminescent display. The patterned phosphor structure includes at least a first and a second phosphor emitting light in different ranges of the visible spectrum, but with combined emission spectra contains red, green and blue light, the first and second phosphors being in a layer, arranged in adjacent, repeating relationship to each other to provide a plurality of repeating first and second phosphor deposits. The phosphor structure also includes one or more means associated with one or more of the first and second phosphor deposits, and which together with the first and second phosphor deposits, form the red, green and blue sub-pixel phosphor elements, for setting and equalizing the threshold voltages of the red, green and blue sub-pixel phosphor elements, and for setting the relative luminosities of the red, green and blue sub-pixel phosphor elements so that they bear set ratios to one another at each operating modulation voltage used to generate the desired luminosities for red, green and blue. Photolithographic methods for producing the patterned phosphor structure are also provided. Also provided is an improved dielectric layer for use in an EL laminate, including a pressed, sintered ceramic material having, compared to an unpressed, sintered dielectric layer of the same composition, improved dielectric strength, reduced porosity and uniform luminosity in an EL laminate. Also provided are combined substrate and dielectric layer components or EL laminates containing the pressed thick film dielectric layer, and methods of forming the pressed thick film dielectric layer. A process is also provided for synthesizing strontium sulfide phosphors by providing a source of high purity strontium carbonate in a dispersed form, heating the strontium carbonate in a reactor with gradual heating up to a maximum temperature in the range of 800 to 1200null C., contacting the heated strontium carbonate with a flow of sulfur vapours formed by heating elemental sulfur in the reactor to at least 300null C. in an inert atmosphere; and terminating the reaction by stopping the flow of sulfur at a point when sulfur dioxide or carbon dioxide in the reaction gas reaches an amount which correlates with an amount of oxygen in oxygen-containing strontium compounds in the reaction product which is in the range of 1 to 10 atomic percent.

公开(公告)号：US20020126074A1

公开(公告)日：2002-09-12

申请号：US09747464

申请日：2000-12-22

Applicant: iFire Technology Inc.

Inventor： Kirk Ouellette ,  Chung-Fai Cheng ,  Don Carkner ,  Eiric Johnstone ,  Xingwei Wu ,  James Stiles

IPC: G09G003/36

CPC classification number: G09G3/2003 ,  G09G3/20 ,  G09G3/30 ,  G09G2300/0452 ,  G09G2310/021 ,  G09G2310/0224 ,  G09G2330/021 ,  G09G2340/0457

Abstract: An electroluminescent display and driving method is provided wherein the rows of pixels are divided into sub-pixel sets and several different sets of sub-pixels are then addressed from within a larger superset of adjacent sub-pixels. The image data for the addressed sub-pixels is averaged with that for adjacent sub-pixels and is applied to the reduced number of larger sub-pixels in sequence. Consequently, for a given sequence of input frame data sets the time average over one frame for a portion of the sub-pixels at any location of the panel is substantially the same as that for a conventionally addressed sub-pixel in a prior art panel.

Abstract translation: 提供一种电致发光显示和驱动方法，其中像素行被划分成子像素组，然后从相邻子像素的较大超集内寻址若干不同组的子像素。 将寻址的子像素的图像数据与相邻子像素的图像数据进行平均，并将其顺序地应用于较小数量的较大子像素。 因此，对于给定的输入帧数据集的序列，在面板的任何位置处的子像素的一部分的一帧的时间平均基本上与现有技术面板中常规寻址的子像素的时间平均相同。

公开(公告)号：US20040090402A1

公开(公告)日：2004-05-13

申请号：US10701051

申请日：2003-11-04

Applicant: iFire Technology Inc.

Inventor： Chun-Fai Cheng

IPC: G09G003/30

CPC classification number: G09G3/32 ,  G09G3/30 ,  G09G3/3614 ,  G09G2310/0259 ,  G09G2310/027 ,  G09G2320/0276

Abstract: A circuit and method of driving a display panel requiring gray scale control wherein the voltage applied to a row of pixels is equal to the sum of voltages of opposite sign with respect to ground applied respectively to the row electrode and column electrodes whose intersection with the row defines the pixels. Gray scale is realized through modulation of the voltage applied to the column electrodes. Typically for video application, 256 individual gray levels are required corresponding to luminance levels ranging from zero (no emissive luminance) to full luminance. The required luminance for each gray level is not a linear function of the gray level number but rather corresponds to an approximate quadratic function of this number. The present invention facilitates generation of luminance values for each gray level that approximates this functional dependence ( i.e. Gamma corrected) with a non-linear voltage ramp terminated by a digital clock having 256 (8 bit) resolution. The voltage at the ramp termination is held at a constant value and fed to the output buffer of the gray scale drivers for the display columns.

Abstract translation: 驱动需要灰度控制的显示面板的电路和方法，其中施加到一行像素的电压等于分别施加到相对于地面的相对符号的电压之和，与行电极和列电极的与行的交点相加 定义像素。 通过调制施加到列电极的​​电压来实现灰度级。 通常对于视频应用，需要对应于从零（无发光亮度）到全亮度的亮度级别需要256个单独的灰度级。 每个灰度级的所需亮度不是灰度级数的线性函数，而是对应于该数的近似二次函数。 本发明有助于以由具有256（8位）分辨率的数字时钟终止的非线性电压斜坡来生成近似该功能依赖性（即，伽马校正）的每个灰度级的亮度值。 斜坡端接电压保持恒定值，并送到显示列的灰度级驱动器的输出缓冲器。

公开(公告)号：US20040033752A1

公开(公告)日：2004-02-19

申请号：US10640725

申请日：2003-08-14

Applicant: IFIRE TECHNOLOGY, INC.

Inventor： Xingwei Wu ,  Daniel Joseph Seale ,  Donald Edward Carkner ,  Michael Roger Westcott ,  David Robin Lovell

IPC: H01J009/00

CPC classification number: H05B33/145 ,  H05B33/10 ,  H05B33/12 ,  H05B33/22

Abstract: A patterned phosphor structure, and EL laminate containing same, forming red, green and blue sub-pixel phosphor elements for an AC electroluminescent display. The patterned phosphor structure includes at least a first and a second phosphor emitting light in different ranges of the visible spectrum, but with combined emission spectra contains red, green and blue light, the first and second phosphors being in a layer, arranged in adjacent, repeating relationship to each other to provide a plurality of repeating first and second phosphor deposits. The phosphor structure also includes one or more means associated with one or more of the first and second phosphor deposits, and which together with the first and second phosphor deposits, form the red, green and blue sub-pixel phosphor elements, for setting and equalizing the threshold voltages of the red, green and blue sub-pixel phosphor elements, and for setting the relative luminosities of the red, green and blue sub-pixel phosphor elements so that they bear set ratios to one another at each operating modulation voltage used to generate the desired luminosities for red, green and blue. Photolithographic methods for producing the patterned phosphor structure are also provided. Also provided is an improved dielectric layer for use in an EL laminate, including a pressed, sintered ceramic material having, compared to an unpressed, sintered dielectric layer of the same composition, improved dielectric strength, reduced porosity and uniform luminosity in an EL laminate. Also provided are combined substrate and dielectric layer components or EL laminates containing the pressed thick film dielectric layer, and methods of forming the pressed thick film dielectric layer. A process is also provided for synthesizing strontium sulfide phosphors by providing a source of high purity strontium carbonate in a dispersed form, heating the strontium carbonate in a reactor with gradual heating up to a maximum temperature in the range of 800 to 1200null C., contacting the heated strontium carbonate with a flow of sulfur vapours formed by heating elemental sulfur in the reactor to at least 300null C. in an inert atmosphere; and terminating the reaction by stopping the flow of sulfur at a point when sulfur dioxide or carbon dioxide in the reaction gas reaches an amount which correlates with an amount of oxygen in oxygen-containing strontium compounds in the reaction product which is in the range of 1 to 10 atomic percent.

公开(公告)号：US20040032208A1

公开(公告)日：2004-02-19

申请号：US10640789

申请日：2003-08-14

Applicant: IFIRE TECHNOLOGY, INC.

Inventor： Xingwei Wu ,  George A. Kupsky

IPC: H01J001/62

CPC classification number: H05B33/145 ,  H05B33/10 ,  H05B33/12 ,  H05B33/22

Abstract: A patterned phosphor structure, and EL laminate containing same, forming red, green and blue sub-pixel phosphor elements for an AC electroluminescent display. The patterned phosphor structure includes at least a first and a second phosphor emitting light in different ranges of the visible spectrum, but with combined emission spectra contains red, green and blue light, the first and second phosphors being in a layer, arranged in adjacent, repeating relationship to each other to provide a plurality of repeating first and second phosphor deposits. The phosphor structure also includes one or more means associated with one or more of the first and second phosphor deposits, and which together with the first and second phosphor deposits, form the red, green and blue sub-pixel phosphor elements, for setting and equalizing the threshold voltages of the red, green and blue sub-pixel phosphor elements, and for setting the relative luminosities of the red, green and blue sub-pixel phosphor elements so that they bear set ratios to one another at each operating modulation voltage used to generate the desired luminosities for red, green and blue. Photolithographic methods for producing the patterned phosphor structure are also provided. Also provided is an improved dielectric layer for use in an EL laminate, including a pressed, sintered ceramic material having, compared to an unpressed, sintered dielectric layer of the same composition, improved dielectric strength, reduced porosity and uniform luminosity in an EL laminate. Also provided are combined substrate and dielectric layer components or EL laminates containing the pressed thick film dielectric layer, and methods of forming the pressed thick film dielectric layer. A process is also provided for synthesizing strontium sulfide phosphors by providing a source of high purity strontium carbonate in a dispersed form, heating the strontium carbonate in a reactor with gradual heating up to a maximum temperature in the range of 800 to 1200null C., contacting the heated strontium carbonate with a flow of sulfur vapours formed by heating elemental sulfur in the reactor to at least 300null C. in an inert atmosphere; and terminating the reaction by stopping the flow of sulfur at a point when sulfur dioxide or carbon dioxide in the reaction gas reaches an amount which correlates with an amount of oxygen in oxygen-containing strontium compounds in the reaction product which is in the range of 1 to 10 atomic percent.

公开(公告)号：US20030117421A1

公开(公告)日：2003-06-26

申请号：US10036002

申请日：2001-12-26

Applicant: iFire Technology, Inc.

Inventor： Chun-Fai Cheng

IPC: G09G005/10

CPC classification number: G09G3/30 ,  G09G2330/023

Abstract: A circuit and method are provided of driving a display panel requiring gray scale control wherein the voltage applied to a row of pixels is equal to the sum of voltages of opposite sign with respect to ground applied respectively to the row electrode and column electrodes whose intersection with the row defines the pixels. The pixels have a capacitance that may be voltage dependent such that energy is stored in the pixels when a voltage is applied across them. The driving circuit incorporates a resonant circuit that is able to efficiently recover capacitive energy stored on the row of pixels and transfer it to another row of pixels as the rows are addressed by the sequential application of a voltage on each row. The resonant circuit comprises a step down transformer, a capacitor across the primary winding, either the rows or columns of the display panel connected across 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 value of the capacitor connected across the transformer primary winding is chosen commensurate with the turns ratio on the transformer and the anticipated range of panel capacitance values to effectively limit variations in the resonance frequency with respect to the frequency of the timing pulses. Limiting the resonance frequency variation in this way maintains high energy recovery efficiency irrespective of random variations in panel capacitance occurring as a result of changes in the displayed image. The improvement of the present invention is an additional secondary winding on the transformer that is connected to a rectifier and DC storage capacitor that is connected in series with the rows or 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.

Abstract translation: 提供了一种电路和方法来驱动需要灰度控制的显示面板，其中施加到一行像素的电压等于分别施加到相对于接地的电极的相对电压的和的总和，所述行电极和列电极与 该行定义像素。 像素具有可以是电压依赖性的电容，使得当在其上施加电压时能量存储在像素中。 驱动电路包括谐振电路，该谐振电路能够有效地恢复存储在像素行上的电容性能量并将其传送到另一行像素，因为行被顺序地施加在每一行上的电压。 谐振电路包括降压变压器，跨初级绕组的电容器，连接在次级绕组上的显示面板的行或列以及输入电压和FET开关，以驱动谐振电路与控制寻址的定时脉冲同步 的显示。 连接在变压器初级绕组上的电容器的值被选择为与变压器的匝数比和面板电容值的预期范围相当，以有效地限制谐振频率相对于定时脉冲的频率的变化。 以这种方式限制谐振频率变化保持高能量回收效率，而不管由于显示图像的变化而产生的面板电容的随机变化。 本发明的改进是在变压器上附加的次级绕组，其连接到与面板的行或列串联连接的整流器和直流存储电容器。 附加电路有助于将驱动器电压钳位到恒定电平，而不管由于负载阻抗的波动导致的负载变化。