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    • 8. 发明授权
    • Epoxy resin composition, cured object obtained therefrom, and light-emitting diode
    • 环氧树脂组合物,由其获得的固化物和发光二极管
    • US09102786B2
    • 2015-08-11
    • US12678166
    • 2008-09-22
    • Takashi SatoShuichi UenoTakeshi Koyama
    • Takashi SatoShuichi UenoTakeshi Koyama
    • H01L23/29C08L63/00C08K5/13C08G59/24H01L51/52C08G59/22C08G59/42H01L33/56
    • C08G59/24C08G59/226C08G59/42C08L63/00H01L33/56H01L51/5237H01L51/5246C08L2666/22
    • Provided are an epoxy resin composition including acid anhydrides (A) and epoxy resins (B), in which: (a) cyclohexane-1,2,4-tricarboxylic acid-1,2-anhydride accounts for 50 to 90 mass % of the acid anhydrides (A); (b) an alicyclic epoxy resin compound accounts for 30 to 90 mass % of the epoxy resins (B) and an epoxy resin compound represented by the following general formula (1) accounts for 10 to 50 mass % of the epoxy resins (B); and (c) contents of the acid anhydrides (A) and the epoxy resins (B) are such that a blending equivalent ratio between the acid anhydrides and the epoxy resins ranges from 0.4 to 0.7, a cured product of the composition, and a light-emitting diode. The epoxy resin composition has the following characteristics. That is, (1) the composition has a low viscosity after the mixing, a low degree of viscosity increase in standing at room temperature, and excellent workability, (2) the composition has satisfactory curability even when no curing accelerator is added, and (3) a cured product is colorless and transparent, has crack resistance, and changes its color to a small extent with long-term light irradiation and heating. The composition is suitable for an encapsulant for a photoelectric conversion element such as a blue LED or white LED. (In the formula, R's each independently represent a hydrogen atom or a methyl group, m represents an integer of 1 to 3, and n represents an integer of 2 to 8.)
    • 提供一种包含酸酐(A)和环氧树脂(B))的环氧树脂组合物,其中:(a)环己烷-1,2,4-三羧酸-1,2-酐占50〜90质量% 酸酐(A); (b)环氧树脂(B)的脂环族环氧树脂化合物占30〜90质量%,由通式(1)表示的环氧树脂化合物占环氧树脂(B)的10〜50质量% ; 和(c)酸酐(A)和环氧树脂(B)的含量使得酸酐与环氧树脂的混合当量比为0.4〜0.7,组合物的固化物和光 发光二极管。 环氧树脂组合物具有以下特征。 也就是说,(1)组合物在混合后具有低粘度,在室温下的静置粘度增加低,加工性优异,(2)即使不加入固化促进剂,组合物也具有令人满意的固化性,( 3)固化产物无色透明,具有抗裂性,并在长时间的光照射和加热下颜色变化很小。 该组合物适用于诸如蓝色LED或白色LED的光电转换元件的密封剂。 (式中,R 3各自独立地表示氢原子或甲基,m表示1〜3的整数,n表示2〜8的整数。)
    • 9. 发明授权
    • Phase-frequency comparator and serial transmission device
    • 相位比较器和串行传输装置
    • US08456205B2
    • 2013-06-04
    • US12987108
    • 2011-01-08
    • Tatsunori UsugiTakeshi IsezakiTakeshi Koyama
    • Tatsunori UsugiTakeshi IsezakiTakeshi Koyama
    • H03L7/06
    • H03D13/004
    • Disclosed is a phase-frequency comparator stabilizing a loop band width by a simple circuit, there is provided a phase-frequency comparator which is a phase-frequency comparator of inputting a reference clock and a feedback clock and outputting an up signal to a frequency synthesizer and a down signal to the frequency synthesizer, which is provided with a first phase-frequency comparing circuit, a second phase comparing circuit, and a delay circuit portion inputting the reference clock and the feedback clock and providing a predetermined relative delay to an input of the first phase-frequency comparing circuit and an input of the second phase comparing circuit, in which frequency comparison is carried out by the first phase-frequency comparing circuit, and phase comparison is carried out by the first phase-frequency comparing circuit and the second phase comparing circuit controlling a latch.
    • 公开了一种通过简单的电路来稳定环路带宽的相位 - 频率比较器,提供了一个相位 - 频率比较器,它是输入参考时钟和反馈时钟的相位 - 频率比较器,并向上升频率合成器 以及向频率合成器提供的向下信号,其提供有第一相位频率比较电路,第二相位比较电路和输入参考时钟和反馈时钟的延迟电路部分,并向 第一相位频率比较电路和第二相位比较电路的输入,其中由第一相位频率比较电路执行频率比较,并且相位比较由第一相位频率比较电路和第二相位比较电路 相位比较电路控制锁存器。
    • 10. 发明授权
    • Housing structure for in-vehicle electronic device
    • 车载电子设备的外壳结构
    • US08414013B2
    • 2013-04-09
    • US12724980
    • 2010-03-16
    • Takeshi Koyama
    • Takeshi Koyama
    • B60R21/01
    • H05K5/0073
    • A housing structure for an in-vehicle electronic device is provided. A case body includes a top panel and a side wall continuously and integrally formed at a side edge of the top panel. The case body is configured to accommodate a control board therein. A plurality of brackets outwardly projects and extends from the side wall of the case body. The brackets are fixed to an attachment portion of a vehicle body. A plurality of reinforcement ribs are integrally formed between the brackets and the side wall of the case body at a position lower than the control board in a state where the case body is mounted on the vehicle body.
    • 提供一种用于车载电子设备的壳体结构。 壳体包括在顶板的侧边缘处连续且一体地形成的顶板和侧壁。 壳体构造成容纳其中的控制板。 多个支架向外突出并从壳体的侧壁延伸。 支架固定在车身的安装部上。 在壳体安装在车体上的状态下,多个加强肋一体形成在支架与壳体的侧壁之间的位置比控制板低的位置。