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    • 1. 发明授权
    • Circuit for signal amplification and use of the same in active matrix devices
    • 用于信号放大的电路及其在有源矩阵器件中的使用
    • US07733337B2
    • 2010-06-08
    • US10567171
    • 2004-07-30
    • Martin J. EdwardsJohn R. A. Ayres
    • Martin J. EdwardsJohn R. A. Ayres
    • G09G5/00
    • G09G3/3648G09G3/3208G09G2300/0833G09G2300/0842G09G2300/0852G09G2300/088G09G2330/021H03F3/005H03F7/04
    • An amplification circuit comprises a capacitor arrangement (42) and a switching arrangement. The capacitor arrangement has a first capacitor (C2) which has a voltage-dependent capacitance and a second capacitor (C1) (which may also be voltage-dependent). The circuit is operable in two modes, a first mode in which the input voltage is provided to one terminal of at least the first capacitor, and a second mode in which the switching arrangement causes charge to be redistributed between the first and second capacitors such that the voltage across the first capacitor changes to reduce the capacitance of the first capacitor, the output voltage being dependent on the resulting voltage across the first capacitor. The invention uses a voltage controlled capacitance in combination with charge sharing between capacitors, which has the result of providing a voltage amplification characteristic. This arrangement can thus be used for the amplification of an analogue voltage, or the boosting of a fixed level (i.e. digital voltage). Thus, the circuit of the invention can be used for level shifting or amplification, for example for use in the pixels of an active matrix array device.
    • 放大电路包括电容器装置(42)和开关装置。 电容器装置具有第一电容器(C2),其具有电压相关的电容和第二电容器(C1)(其也可以是取决于电压的)。 电路可以以两种模式操作:第一模式,其中输入电压被提供给至少第一电容器的一个端子;以及第二模式,其中开关装置使电荷在第一和第二电容器之间重新分布,使得 第一电容器两端的电压改变以减小第一电容器的电容,输出电压取决于第一电容器两端产生的电压。 本发明使用电压控制电容与电容器之间的电荷共享结合起来,其具有提供电压放大特性的结果。 因此,这种布置可用于放大模拟电压,或升高固定电平(即数字电压)。 因此,本发明的电路可用于电平转换或放大,例如用于有源矩阵阵列器件的像素。
    • 2. 发明授权
    • Pixel array with indirectly associated memory
    • 像素阵列间接关联的内存
    • US06937248B2
    • 2005-08-30
    • US10198502
    • 2002-07-18
    • Martin J. EdwardsJohn R. A. Ayres
    • Martin J. EdwardsJohn R. A. Ayres
    • G02F1/1362G02F1/133G09F9/30G09G3/20G09G3/36G11C5/02G11C8/10H01L21/336H01L29/786G06F12/06
    • G11C8/10G09G3/20G09G3/3648G09G2300/0842G11C5/025
    • A pixellated device (10), such as a display, has pixel row and column address lines (18,20) for addressing each pixel, thereby providing signal data to each pixel (12) or reading signal data from each pixel. An array of memory cells (22) is provided on the substrate interspersed with the pixel drive circuitry (16), wherein memory address circuitry (24,26,28,30) is provided enabling data to be written to each memory cell and enabling data to be read from each cell (22), independently of the signal data. Each memory cell (22) is thus addressable independently of the pixel data. Thus, the memory cells do not form part of the pixel circuitry, which allows the memory to be used in a flexible manner. For example, the memory may be used for purposes not directly associated with the driving or addressing of the pixels of the device.
    • 诸如显示器的像素化设备(10)具有用于寻址每个像素的像素行和列地址线(18,20),从而向每个像素(12)提供信号数据或从每个像素读取信号数据。 在散布有像素驱动电路(16)的衬底上提供存储单元阵列(22),其中提供存储器地址电路(24,26,28,30),使得能够将数据写入每个存储器单元并使能数据 要从每个单元(22)读取,独立于信号数据。 因此,每个存储单元(22)可独立于像素数据进行寻址。 因此,存储器单元不形成像素电路的一部分,这允许以灵活的方式使用存储器。 例如,存储器可以用于与驱动或寻址设备的像素直接相关联的目的。
    • 5. 发明授权
    • Charge pump circuit
    • 电荷泵电路
    • US06404271B2
    • 2002-06-11
    • US09756932
    • 2001-01-09
    • John R. A. Ayres
    • John R. A. Ayres
    • G05F110
    • H02M3/073
    • A charge pump circuit (1) comprises a series of voltage boosting stages (11), each stage (11) comprising a switching means (10) and a capacitive element (12) connected in series between the input to the stage and a respective voltage control terminal (14,15). The voltage control terminals (14,15) comprise at least two groups of terminals receiving respective timed control voltages, and adjacent stages (11) are associated with different terminal groups. The switching means (10) of one or more stages (11) comprises a lateral PIN junction diode. The use of diodes enables the charge pump circuit itself to operate from a lower supply voltage than is possible with the use of TFTs. The use of lateral PIN diodes enables the charge pump circuit to be formed using the same processing as may be required for TFT's of the circuit to which the boosted voltage is supplied. This enables the charge pump circuit to be formed on a common substrate with higher voltage TFT circuitry for, for example, an AMLCD.
    • 电荷泵电路(1)包括一系列升压级(11),每个级(11)包括开关装置(10)和电容元件(12),该电容元件(12)串联在所述级的输入端和相应的电压 控制终端(14,15)。 电压控制端子(14,15)包括接收相应的定时控制电压的至少两组端子,并且相邻级(11)与不同端子组相关联。 一个或多个级(11)的开关装置(10)包括横向PIN结二极管。 使用二极管使得电荷泵电路本身能够以比使用TFT可能的更低的电源电压工作。 使用横向PIN二极管使得可以使用与提供升压电压的电路的TFT相同的处理来形成电荷泵电路。 这使得电荷泵电路可以在具有例如AMLCD的更高电压TFT电路的公共基板上形成。
    • 6. 发明授权
    • Electronic devices with thin-film circuit elements forming a sampling
circuit
    • 具有薄膜电路元件的电子器件形成采样电路
    • US5684318A
    • 1997-11-04
    • US639277
    • 1996-04-25
    • John R. A. AyresMartin J. Edwards
    • John R. A. AyresMartin J. Edwards
    • H01L29/78G02F1/1362H01L27/12H01L29/786H01L29/76H01L29/94H01L31/062H01L31/113
    • H01L29/78696G09G3/3688H01L27/12H01L29/78606H01L29/78618G02F1/13454G09G2310/0294
    • In an LCD or other electronic device, thin-film circuit elements on a substrate (100) form a sample-and-hold or other sampling circuit (10). The circuit (10) comprises a TFT (Ts) as a sampling transistor and preferably another TFT (T2) to compensate for displacement currents in charging and discharging the insulated gate (12) of the sampling TFT. Even when T2 is included, a slow drift in output voltage (Vo) is observed when Ts switches off, and this limits use of the circuit, especially in large area active-matrix devices. In accordance with the invention this slow drift is removed or significantly reduced by injecting minority carriers into the channel region of Ts (and T2) from a doped opposite-type region (119) or Schottky contact region (119) which is forward biased via a thin-film supply line (129). The minority carriers neutralise majority carriers which are being slowly released by thermal emission from trapping states in the TFT body.
    • 在LCD或其他电子设备中,衬底(100)上的薄膜电路元件形成采样保持或其它采样电路(10)。 电路(10)包括作为采样晶体管的TFT(Ts),并且优选地为补偿采样TFT的绝缘栅极(12)的充电和放电中的位移电流的另一TFT(T2)。 即使在包括T2的情况下,当Ts关断时,也观察到输出电压(Vo)的缓慢偏移,这限制了电路的使用,特别是在大面积的有源矩阵器件中。 根据本发明,通过从掺杂的相对类型区域(119)或肖特基接触区域(119)将Ts(和T2)的少数载流子注入到Ts(和T2)的沟道区域中,可以去除或显着降低该慢漂移, 薄膜供应线(129)。 少数载体中和通过TFT体内的捕获状态的热发射缓慢释放的多数载流子。
    • 7. 发明授权
    • Active matrix array device
    • 有源矩阵阵列器件
    • US08228317B2
    • 2012-07-24
    • US11817037
    • 2006-02-27
    • John R. A. Ayres
    • John R. A. Ayres
    • G06F3/038
    • G09G3/3688G09G2310/027
    • An active matrix array device has driver circuitry for providing address signals to the matrix elements, including digital to analogue converter circuitry. This has a voltage selector for selecting a pair of voltages based on a first set of bits of the digital matrix element signal, and a converter arrangement for providing an analogue voltage level derived from the pair of voltages and from a second set of bits of the digital matrix element signal. The converter arrangement comprises first and second digital to analogue converter circuits (30, 32) in parallel and which are adapted to provide an analogue voltage level to an output of the converter arrangement alternately. The invention provides a more efficient use of substrate area for given circuit response requirements.
    • 有源矩阵阵列器件具有用于向矩阵元件提供地址信号的驱动器电路,包括数模转换器电路。 它具有电压选择器,用于基于数字矩阵元件信号的第一组位选择一对电压;以及转换器装置,用于提供从该对电压导出的模拟电压电平,以及从第二组位 数字矩阵元素信号。 转换器装置并联包括第一和第二数模转换器电路(30,32),并且适于将模拟电压电平交替地提供给转换器装置的输出。 本发明提供了对于给定的电路响应要求更有效地使用衬底面积。