公开(公告)号：US06356326B1

公开(公告)日：2002-03-12

申请号：US09623055

申请日：2000-10-06

申请人： Tatsuhiko Tamura ,  Takashi Hirose ,  Nobuyuki Tsuboi

发明人： Tatsuhiko Tamura ,  Takashi Hirose ,  Nobuyuki Tsuboi

IPC分类号： G02F11333

CPC分类号： G02F1/1362 ,  G02F1/133502 ,  G02F1/136227 ,  G02F1/1368 ,  G02F2001/133357

摘要： An active matrix substrate for liquid crystal display in which an active element and address wiring are disposed in a matrix on an insulating substrate. The active element and address wiring are covered with a transparent insulating layer, and then a transparent electrode for display is disposed on the transparent insulating layer. The transparent electrode for display is connected to the active element through a contact hole created on the transparent insulating layer. In this structure, a difference in refractive index between an element insulating layer which is a part of the active element under the transparent display electrode and the transparent insulating layer, and a difference in refractive index between the element insulating layer and insulating substrate are both set to within 0.2. This allows to obtain a liquid crystal display with satisfactory display quality.

摘要翻译： 一种用于液晶显示器的有源矩阵基板，其中有源元件和地址布线被布置在绝缘基板上的矩阵中。 有源元件和地址布线被透明绝缘层覆盖，然后在透明绝缘层上设置用于显示的透明电极。 用于显示的透明电极通过在透明绝缘层上形成的接触孔连接到有源元件。 在该结构中，设置作为透明显示电极下方的有源元件的一部分的元件绝缘层与透明绝缘层之间的折射率与元件绝缘层和绝缘基板之间的折射率差的折射率的差别 至0.2以内。 这允许获得具有令人满意的显示质量的液晶显示器。

公开(公告)号：US5303072A

公开(公告)日：1994-04-12

申请号：US722550

申请日：1991-06-26

申请人： Mamoru Takeda ,  Sadayoshi Hotta ,  Ichiro Yamashita ,  Tatsuhiko Tamura ,  Yoneharu Takubo

发明人： Mamoru Takeda ,  Sadayoshi Hotta ,  Ichiro Yamashita ,  Tatsuhiko Tamura ,  Yoneharu Takubo

IPC分类号： G02F1/1362 ,  G09G3/36 ,  G02F1/133

CPC分类号： G02F1/13624 ,  G09G3/3648 ,  G09G3/3659 ,  G02F1/136213 ,  G09G2300/0809 ,  G09G2310/0205 ,  G09G2330/08

摘要： An improved arrangement of a liquid crystal display device is provided in which the redundancy of a known but unwanted TFT (thin film transistor) defect is suppressed so that the yield per finished liquid crystal display device product can be increased without deterioration in the picture quality. Each pixel of the liquid crystal display device arranged at an intersection of one of scanning lines and one of signal lines is provided with two or three TFTs and also, a storage capacitor which is formed of a portion of a gate insulating layer and is sandwiched between its electrode and a preceding scanning line in the previous row using no extra masking procedure. The source, drain and gate electrodes of both the first and third TFTs are respectively coupled to the same signal line, the electrode of the same pixel and the adjacent scanning lines. The gate, source and drain electrodes of the second TFT are respectively coupled to the same scanning line to which the gate electrode of the first TFT is coupled, the electrode of the same pixel and the electrode of a succeeding pixel provided on the opposite side of the scanning line with respect to the same pixel. The arrangement also has a scanning driver circuit capable of activating two scanning lines at the same time for a sequential one-by-one scanning operation, whereby no fault in a reproduced image will be perceived in spite of the presence of a defective TFT.

摘要翻译： 提供了一种液晶显示装置的改进布置，其中已知但不期望的TFT（薄膜晶体管）缺陷的冗余被抑制，使得可以在不降低图像质量的情况下提高每一个完成的液晶显示装置的产量。 布置在扫描线和信号线之一的交点处的液晶显示装置的每个像素都设置有两个或三个TFT，以及由栅极绝缘层的一部分形成并夹在 其电极和前一行中的前一扫描线不使用额外的屏蔽程序。 第一和第三TFT的源极，漏极和栅极电极分别耦合到相同的信号线，相同像素的电极和相邻的扫描线。 第二TFT的栅极，源极和漏极电极分别耦合到与第一TFT的栅电极耦合的相同的扫描线，相同像素的电极和设置在第二TFT的相反的一侧的后续像素的电极 相对于相同像素的扫描线。 该布置还具有能够同时激活两条扫描线以进行逐次扫描操作的扫描驱动电路，由此即使存在有缺陷的TFT，也不会感觉到再现图像中的故障。

公开(公告)号：US5185601A

公开(公告)日：1993-02-09

申请号：US638537

申请日：1991-01-08

申请人： Mamoru Takeda ,  Tatsuhiko Tamura ,  Sadayoshi Hotta

发明人： Mamoru Takeda ,  Tatsuhiko Tamura ,  Sadayoshi Hotta

IPC分类号： G02F1/1333 ,  G02F1/1343 ,  G02F1/136 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/36 ,  H01L21/336 ,  H01L29/786

CPC分类号： G02F1/136213 ,  G09G3/3648

摘要： A liquid crystal display apparatus includes a transistor array substrate having formed thereon an array of pixel electrodes arranged in a matrix to form pixels, an array of switching thin film transistors arranged in a matrix for driving the pixels, respectively, gate bus lines arranged in rows for applying scanning signals to the switching thin film transistors, and source bus lines arranged in columns for applying display data signals to the switching thin film transistors. A counter substrate has formed thereon a common counter electrode confronting the pixel electrodes, and a liquid crystal layer is sandwiched between the transistor array substrate and the counter substrate. The transistor array substrate further has formed thereon a common electrode disposed below the pixel electrodes through an insulating layer for constituting auxiliary capacitors with the pixel electrodes. The common electrode is extended to cover an area above each source bus line or each gate bus line through another insulating layer so as to shield the pixel electrodes from the source or gate bus lines.

摘要翻译： 一种液晶显示装置，包括：晶体管阵列基板，其上形成有矩阵排列成像素的像素电极阵列，排列成矩阵状的开关薄膜晶体管阵列，分别驱动像素，栅极总线布置成行 用于将扫描信号施加到开关薄膜晶体管，以及用于将列显示数据信号施加到开关薄膜晶体管的列布置的源极总线。 对置基板在其上形成有面对像素电极的公共对向电极，液晶层夹在晶体管阵列基板和对置基板之间。 晶体管阵列基板还在其上形成有通过绝缘层设置在像素电极下方的公共电极，用于构成具有像素电极的辅助电容器。 公共电极延伸以覆盖每个源极总线或每个栅极总线上方的区域通过另一个绝缘层，以便屏蔽来自源极或栅极总线的像素电极。

公开(公告)号：US4940934A

公开(公告)日：1990-07-10

申请号：US262340

申请日：1988-10-14

申请人： Takao Kawaguchi ,  Tatsuhiko Tamura ,  Etsuya Takeda

发明人： Takao Kawaguchi ,  Tatsuhiko Tamura ,  Etsuya Takeda

IPC分类号： G01R31/317 ,  G01R31/316 ,  G02F1/13 ,  G02F1/133 ,  G02F1/136 ,  G02F1/1368 ,  G09F9/30 ,  G09F9/35 ,  H01L21/66 ,  H01L21/82 ,  H01L27/12

CPC分类号： G01R31/316 ,  Y10S345/904

摘要： In a method of electrically testing an active matrix substrate having a plurality of semiconductor switching devices, a row group of a plurality of parallel conductors and a column group of a plurality of parallel conductors, a gate electrode of each of the semiconductor switching devices being connected to one of the conductors of the row group, and a source electrode of each of the semiconductor switching devices being connected to one of the conductors of the column group, there are provided the steps of short-circuiting the conductors of the row group at both ends thereof; short-circuiting the conductors of the column group at both ends thereof; applying a predetermined voltage between the row and column groups of the conductors; and measuring a current flowing from the row group to the column group of the conductors. Moreover, in determining whether the active matrix substrate is defective, there is also provided the step of determining whether the following formula is satisfied or not:I.sub.1 .ltoreq.n.times.I.sub.2where I.sub.1 is current measured by the step of measuring; I.sub.2 is known driving current of each of the semiconductor switching device; and n is a constant.

摘要翻译： 在电测试具有多个半导体开关器件的有源矩阵衬底的方法中，多个平行导体的行组和多个平行导体的列组，每个半导体开关器件的栅电极被连接 到行组中的一个导体中，并且每个半导体开关器件的源电极连接到列组的一个导体，提供了将两组导体的导体短路的步骤 其末端; 两端的列组导体短路; 在导体的行组和列组之间施加预定的电压; 并测量从导体组的行组到列组的电流。 此外，在确定有源矩阵基板是否有缺陷的同时，还提供确定以下公式是否满足的步骤：I1 <= n×I2其中I1是通过测量步骤测量的电流; I2是半导体开关器件中的每一个的驱动电流; 并且n是常数。