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    • 6. 发明授权
    • Method of fabrication of display pixels driven by silicon thin film
transistors
    • 由硅薄膜晶体管驱动的显示像素的制造方法
    • US5994174A
    • 1999-11-30
    • US940104
    • 1997-09-29
    • Paul G. CareyPatrick M. Smith
    • Paul G. CareyPatrick M. Smith
    • G02F1/1333G02F1/1362G02F1/1368H01L21/336H01L29/786H01L21/268
    • H01L29/66765G02F1/1368H01L27/1218H01L29/78603G02F1/133305G02F1/136213
    • Display pixels driven by silicon thin film transistors are fabricated on plastic substrates for use in active matrix displays, such as flat panel displays. The process for forming the pixels involves a prior method for forming individual silicon thin film transistors on low-temperature plastic substrates. Low-temperature substrates are generally considered as being incapable of withstanding sustained processing temperatures greater than about 200.degree. C. The pixel formation process results in a complete pixel and active matrix pixel array. A pixel (or picture element) in an active matrix display consists of a silicon thin film transistor (TFT) and a large electrode, which may control a liquid crystal light valve, an emissive material (such as a light emitting diode or LED), or some other light emitting or attenuating material. The pixels can be connected in arrays wherein rows of pixels contain common gate electrodes and columns of pixels contain common drain electrodes. The source electrode of each pixel TFT is connected to its pixel electrode, and is electrically isolated from every other circuit element in the pixel array.
    • 由硅薄膜晶体管驱动的显示像素被制造在用于有源矩阵显示器(例如平板显示器)中的塑料基板上。 用于形成像素的工艺涉及用于在低温塑料基板上形成各个硅薄膜晶体管的现有方法。 低温基底通常被认为不能承受大于约200℃的持续处理温度。像素形成过程导致完整的像素和有源矩阵像素阵列。 有源矩阵显示器中的像素(或像素)由可以控制液晶光阀,发光材料(例如发光二极管或LED)的硅薄膜晶体管(TFT)和大电极组成, 或一些其他发光或衰减材料。 像素可以以阵列的形式连接,其中像素行包含公共栅电极,并且像素列包含公共漏电极。 每个像素TFT的源电极连接到其像素电极,并且与像素阵列中的每隔一个电路元件电隔离。
    • 7. 发明授权
    • Plastic substrates for active matrix liquid crystal display incapable of
withstanding processing temperature of over 200.degree. C and method of
fabrication
    • 用于有源矩阵液晶显示器的塑料基板不能承受超过200℃的加工温度和制造方法
    • US5856858A
    • 1999-01-05
    • US980837
    • 1997-12-01
    • Paul G. CareyPatrick M. SmithJohn HavensPhil Jones
    • Paul G. CareyPatrick M. SmithJohn HavensPhil Jones
    • G02F1/1333G02F1/1334G02F1/1368G02F1/133
    • G02F1/133305G02F1/1334G02F1/1368
    • Bright-polarizer-free, active-matrix liquid crystal displays (AMLCDs) are formed on plastic substrates. The primary components of the display are a pixel circuit fabricated on one plastic substrate, an intervening liquid-crystal material, and a counter electrode on a second plastic substrate. The-pixel circuit contains one or more thin-film transistors (TFTs) and either a transparent or reflective pixel electrode manufactured at sufficiently low temperatures to avoid damage to the plastic substrate. Fabrication of the TFTs can be carried out at temperatures less than 100.degree. C. The liquid crystal material is a commercially made nematic curvilinear aligned phase (NCAP) film. The counter electrode is comprised of a plastic substrate coated with a transparent conductor, such as indium-doped tin oxide (ITO). By coupling the active matrix with NCAP, a high-information content can be provided in a bright, fully plastic package. Applications include any low cost portable electronics containing flat displays where ruggedization of the display is desired.
    • 在塑料基板上形成无偏光镜的有源矩阵液晶显示器(AMLCD)。 显示器的主要部件是在一个塑料基板,中间液晶材料和第二塑料基板上的对电极上制造的像素电路。 像素电路包含一个或多个薄膜晶体管(TFT)以及在足够低的温度下制造的透明或反射像素电极,以避免损坏塑料基板。 TFT的制造可以在低于100℃的温度下进行。液晶材料是商业上制作的向列线性对准相(NCAP)膜。 对电极由涂覆有透明导体的诸如铟掺杂氧化锡(ITO)的塑料基板组成。 通过将有源矩阵与NCAP耦合,可以在明亮的全塑料封装中提供高信息含量。 应用包括任何低成本便携式电子产品,其中包含需要显示器加固的平板显示器。
    • 9. 发明授权
    • Thin film transistors on plastic substrates
    • 塑料基板上的薄膜晶体管
    • US06680485B1
    • 2004-01-20
    • US09025006
    • 1998-02-17
    • Paul G. CareyPatrick M. SmithThomas W. SigmonRandy C. Aceves
    • Paul G. CareyPatrick M. SmithThomas W. SigmonRandy C. Aceves
    • H01L2904
    • H01L27/1285H01L21/02422H01L21/02488H01L21/02532H01L21/02686H01L21/268H01L27/1214H01L29/66757H01L29/78603H01L29/78666H01L29/78675
    • A process for formation of thin film transistors (TFTs) on plastic substrates replaces standard thin film transistor fabrication techniques, and uses sufficiently lower processing temperatures so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The silicon based thin film transistor produced by the process includes a low temperature substrate incapable of withstanding sustained processing temperatures greater than about 250° C., an insulating layer on the substrate, a layer of silicon on the insulating layer having sections of doped silicon, undoped silicon, and poly-silicon, a gate dielectric layer on the layer of silicon, a layer of gate metal on the dielectric layer, a layer of oxide on sections of the layer of silicon and the layer of gate metal, and metal contacts on sections of the layer of silicon and layer of gate metal defining source, gate, and drain contacts, and interconnects.
    • 用于在塑料基板上形成薄膜晶体管(TFT)的工艺代替标准薄膜晶体管制造技术,并且使用足够低的处理温度,以便可以使用便宜的塑料基板代替标准玻璃,石英和硅晶片基板 。 通过该方法制造的基于硅的薄膜晶体管包括不能承受大于约250℃的持续处理温度的低温衬底,衬底上的绝缘层,具有掺杂硅的部分的绝缘层上的硅层, 未掺杂的硅和多晶硅,硅层上的栅极介电层,电介质层上的栅极金属层,在硅层和栅极金属层上的部分上的氧化物层,以及金属接触 限定源极,栅极和漏极触点以及互连的硅层和栅极金属层的部分。
    • 10. 发明授权
    • Method of making self-aligned lightly-doped-drain structure for MOS transistors
    • 制造用于MOS晶体管的自对准轻掺杂漏极结构的方法
    • US06303446B1
    • 2001-10-16
    • US08593766
    • 1996-01-29
    • Kurt H. WeinerPaul G. Carey
    • Kurt H. WeinerPaul G. Carey
    • H01L21336
    • H01L29/6659H01L21/223
    • A process for fabricating lightly-doped-drains (LDD) for short-channel metal oxide semiconductor (MOS) transistors. The process utilizes a pulsed laser process to incorporate the dopants, thus eliminating the prior oxide deposition and etching steps. During the process, the silicon in the source/drain region is melted by the laser energy. Impurities from the gas phase diffuse into the molten silicon to appropriately dope the source/drain regions. By controlling the energy of the laser, a lightly-doped-drain can be formed in one processing step. This is accomplished by first using a single high energy laser pulse to melt the silicon to a significant depth and thus the amount of dopants incorporated into the silicon is small. Furthermore, the dopants incorporated during this step diffuse to the edge of the MOS transistor gate structure. Next, many low energy laser pulses are used to heavily dope the source/drain silicon only in a very shallow region. Because of two-dimensional heat transfer at the MOS transistor gate edge, the low energy pulses are inset from the region initially doped by the high energy pulse. By computer control of the laser energy, the single high energy laser pulse and the subsequent low energy laser pulses are carried out in a single operational step to produce a self-aligned lightly-doped-drain-structure.
    • 一种制造用于短沟道金属氧化物半导体(MOS)晶体管的轻掺杂漏极(LDD)的方法。 该方法利用脉冲激光工艺来掺入掺杂剂,从而消除了先前的氧化物沉积和蚀刻步骤。 在该过程中,源极/漏极区域中的硅被激光能量熔化。 来自气相的杂质扩散到熔融硅中以适当地掺杂源/漏区。 通过控制激光的能量,可以在一个处理步骤中形成轻掺杂漏极。 这是通过首先使用单个高能激光脉冲来将硅熔化到显着的深度来实现的,因此掺入硅中的掺杂剂的量很小。 此外,掺杂在该步骤中的掺杂剂扩散到MOS晶体管栅极结构的边缘。 接下来,许多低能激光脉冲被用于仅在非常浅的区域中重掺杂源极/漏极硅。 由于在MOS晶体管栅极边缘处的二维热传递,低能量脉冲从最初由高能脉冲掺杂的区域插入。 通过计算机控制激光能量,单个高能量激光脉冲和随后的低能激光脉冲在单个操作步骤中进行,以产生自对准的轻掺杂漏极结构。