Flat display apparatus
    102.
    发明授权
    Flat display apparatus 失效
    平板显示装置

    公开(公告)号:US06536913B1

    公开(公告)日:2003-03-25

    申请号:US09577095

    申请日:2000-05-24

    IPC分类号: H01L3300

    摘要: An LED display apparatus capable of reliably preventing damage caused by static electricity without worsening the visual recognition, in which an the display surface of the LED display apparatus is mounted an electrically conductive plate having a thickness nearly equal to, or smaller than, the height of the light-emitting portions L in a direction Z perpendicular to the display surface and having holes 3a perforated at positions corresponding to the positions of the light-emitting portions L on the display surface. The electrically conductive plate 3 is grounded, and a current due to the electrostatic discharge flows from the electrically conductive plate 3 into ground.

    摘要翻译: 一种LED显示装置,其能够可靠地防止静电造成的损害,而不会使视觉识别恶化,其中,LED显示装置的显示面安装有导电板,导电板的厚度近似等于或小于 发光部分L在垂直于显示表面的方向Z上并且具有在对应于显示表面上的发光部分L的位置的位置处穿孔的孔3a。 导电板3接地,由于静电放电引起的电流从导电板3流入地面。

    Display apparatus
    103.
    发明授权
    Display apparatus 失效
    显示装置

    公开(公告)号:US6154362A

    公开(公告)日:2000-11-28

    申请号:US59305

    申请日:1998-04-14

    摘要: A display apparatus provided with display cells wherein LEDs are arranged in dot-like array within a case and molded by a mold portion within the case, and a unit portion accommodating therein a cell substrate on which the display cells are mounted. Further, there are provided ventilation holes formed so as to penetrate the display cells at prescribed positions in a direction from rear to front, a fan which is provided in an upper part of a rear surface of the unit portion can send cooling air into the unit portion and an opening portion formed at a bottom surface of the unit portion, thereby making it possible to discharge the cooling air sent by the fan to outside from the ventilation holes through the opening portion. Further, a penthouse unit is provided in front of the display cells and the cooling air discharged from the ventilation holes is caused to be returned to a side of the LEDs.

    摘要翻译: 一种显示装置,其具有显示单元,其中LED以壳状排列成阵列状并由壳体内的模具部分模制,以及容纳其中安装有显示单元的单元基板的单元部分。 此外,设置有以从后到前的方向穿过显示单元的通风孔,设置在单元部分的后表面的上部的风扇可以将冷却空气送入单元 部分和形成在单元部分的底表面处的开口部分,从而使得可以通过开口部分将由风扇发送的冷却空气从通气孔排出到外部。 此外,在显示单元的前面设置顶棚单元,并且使从通风孔排出的冷却空气返回到LED的一侧。

    Digital signal modulation analysis device
    108.
    发明授权
    Digital signal modulation analysis device 失效
    数字信号调制分析装置

    公开(公告)号:US5724388A

    公开(公告)日:1998-03-03

    申请号:US427104

    申请日:1995-04-21

    CPC分类号: H04L27/2649

    摘要: A digital signal modulation analysis device is to shorten the time for modulation analysis, and at the same time to structure a measurement device that is small in scale and inexpensive. A digital signal modulation analysis device includes a frequency converter which converts a signal from a device under test to a first intermediate frequency signal, a sampling part which converts the first intermediate frequency signal to a second intermediate-frequency signal whose frequency is lower than that of the first intermediate frequency to store the second intermediate frequency signal in a memory, a Hilbert converter which converts an incoming signal into orthogonal component signals through a quadrant-modulate detection process, an initial synchronization part which determines a carrier center frequency, a symbol-demodulation/parameter-estimation part which determines optimal parameters to minimize a modulation error and demodulates all symbol data to determine reference data for the all symbol data, and a modulation-precision calculation component which calculates modulation-precision data and modulation-error data for each symbol.

    摘要翻译: 数字信号调制分析装置缩短了调制分析的时间,同时构成了规模小,价格便宜的测量装置。 数字信号调制分析装置包括:频率转换器,其将来自被测器件的信号转换为第一中频信号;采样部,其将第一中频信号转换为频率低于第一中频信号的第二中频信号 将第二中频信号存储在存储器中的第一中频,通过象限调制检测处理将输入信号转换为正交分量信号的希尔伯特转换器,确定载波中心频率的初始同步部分,符号解调 /参数估计部分,其确定最佳参数以最小化调制误差并解调所有符号数据以确定全部符号数据的参考数据;以及调制精度计算部件,其计算每个符号的调制精度数据和调制误差数据 。

    Method for production of acrylate and acrylate-containing polymer
    110.
    发明授权
    Method for production of acrylate and acrylate-containing polymer 失效
    生产含丙烯酸酯和含丙烯酸酯的聚合物的方法

    公开(公告)号:US5338810A

    公开(公告)日:1994-08-16

    申请号:US27678

    申请日:1993-03-08

    摘要: A method for the production of an acrylate by the neutralization reaction of acrylic acid and a basic substance, comprising sequentially (A) a step of supplying acrylic acid and said basic substance to water thereby subjecting them to a neutralization reaction while constantly retaining the neutralization ratio of acrylic acid within the neutralization reaction system in the range of 75 to 100 mol %, (B) a step of adjusting the neutralization ratio of acrylic acid within said neutralization reaction system in the range of 100.1 to 110 mol % by supplying said basic substance to said neutralization reaction system, (C) a step of retaining the neutralization ratio of acrylic acid within said neutralization reaction system in the range of 100.1 to 110 mol % for a period in the range of 1 to 120 minutes thereby allowing the neutralization reaction product to age, and (D) a step of adjusting the neutralization ratio of acrylic acid within said neutralization reaction system in the range of 20 to 100 mol % by supplying acrylic acid to said neutralization reaction system, and a method for the production of an acrylate-containing polymer using the acrylate.

    摘要翻译: 一种通过丙烯酸和碱性物质的中和反应制备丙烯酸酯的方法,其包括依次(A)将丙烯酸和所述碱性物质供给水的步骤,由此使其进行中和反应,同时保持中和率 的丙烯酸在75〜100摩尔%的范围内,(B)将所述中和反应体系中的丙烯酸的中和比例调整为100.1〜110摩尔%的步骤,通过供给所述碱性物质 所述中和反应体系中,(C)将所述中和反应体系中的丙烯酸中和比例保持在1〜120分钟的范围内的步骤,为100-1〜110摩尔%,从而使中和反应产物 (D)将所述中和反应体系中丙烯酸的中和比调节至2的范围 通过向所述中和反应体系供给丙烯酸,0〜100摩尔%,以及使用该丙烯酸酯制造含丙烯酸酯的聚合物的方法。