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    Laser ablation method for patterning a thin film layer
    2.
    发明授权
    Laser ablation method for patterning a thin film layer 有权
    用于图案化薄膜层的激光烧蚀方法

    公开(公告)号：US06838038B2

    公开(公告)日：2005-01-04

    申请号：US10326778

    申请日：2002-12-19

    Applicant: Dave Lovell ,  Terry Hunt

    Inventor： Dave Lovell ,  Terry Hunt

    IPC: B23K26/00 ,  B23K26/12 ,  B23K26/36 ,  B23K26/38 ,  B23K26/40 ,  B23K101/36 ,  G09F9/00 ,  H01L51/00 ,  H05B33/10 ,  H05B33/12 ,  H05B33/14 ,  H05B33/28 ,  H01S3/00

    CPC classification number: H01L51/0005 ,  B23K26/0006 ,  B23K26/38 ,  B23K26/40 ,  B23K2101/35 ,  B23K2103/172 ,  B23K2103/50 ,  B23K2103/52 ,  H05B33/10 ,  H05B33/12

    Abstract: The invention relates to a laser ablation method for patterning thin film layers for thick dielectric electroluminescent displays without substantial ablation of or damage to any other layers. Typically, the thin film layers are phosphor layers. The laser ablation method for patterning a thin film phosphor layer of a thick dielectric electroluminescent display includes selecting a wavelength of laser radiation, a laser pulse length, a laser energy density and a sufficient number of laser pulses to pattern the thin film phosphor layer without substantial ablation of or damage to other layers, whereby the wavelength of laser radiation is such that the laser radiation is substantially absorbed by the thin film phosphor layer with minimal absorption by other layers, the laser pulse length is sufficiently short that during the duration of the laser pulse there is minimal heat flow from the thin film phosphor layer to other layers, and the laser energy density and the sufficient number of laser pulses is sufficiently high that energy is deposited in the thin film phosphor layer, whereby the entire thickness of at least a portion of the thin film phosphor layer is ablated.

    Single source sputtering of thioaluminate phosphor films
    3.
    发明申请
    Single source sputtering of thioaluminate phosphor films 有权
    硫酸铝磷光体薄膜的单源溅射

    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。

    Method and apparatus for gray-scale gamma correction for electroluminescent displays
    5.
    发明申请
    Method and apparatus for gray-scale gamma correction for electroluminescent displays 审中-公开
    用于电致发光显示器的灰度伽马校正的方法和装置

    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。

    Method of forming a thick film dielectric layer in an electroluminescent laminate
    7.
    发明申请
    Method of forming a thick film dielectric layer in an electroluminescent laminate 有权

    公开(公告)号：US20050202157A1

    公开(公告)日：2005-09-15

    申请号：US11122301

    申请日：2005-05-03

    Applicant: Xingwei Wu ,  George Kupsky

    Inventor： Xingwei Wu ,  George Kupsky

    IPC: H05B33/02 ,  H05B33/10 ,  H05B33/12 ,  H05B33/14 ,  H05B33/22 ,  B05D5/12

    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 1200° C., contacting the heated strontium carbonate with a flow of sulfur vapours formed by heating elemental sulfur in the reactor to at least 300° 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.

    Shared pixel electroluminescent display driver system
    9.
    发明申请
    Shared pixel electroluminescent display driver system 失效
    共享像素电致发光显示驱动系统

    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。

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