公开(公告)号：DE69830954D1

公开(公告)日：2005-09-01

申请号：DE69830954

申请日：1998-01-29

Applicant: SEIKO EPSON CORP

Inventor： MATSUEDA YOJIRO

IPC: G02F1/133 ,  G02F1/13 ,  G02F1/1339 ,  G02F1/1362 ,  G09F9/30 ,  G09G3/00 ,  G09G3/20 ,  G09G3/36 ,  H03M1/76 ,  H03M1/80 ,  H03M1/82

Abstract: A digital driver (330), having the function of enabling an output terminal to be in high-impedance condition, for driving data lines, and an inspection circuit (340) provided at ends of the data lines opposite to the digital driver are provided. The inspection circuit (340) includes bidirectional switches provided for each of the plurality of respective data lines, and control means for controlling the switching of the switches. By using the inspection circuit provided at the opposite ends of the data lines, not only inspections of data-line disconnection or digital-driver output but also determination of whether or not there is a point defect can be performed. In addition, since the circuit is designed only for inspection, its size is extremely small, and the circuit can be disposed in a dead space.

公开(公告)号：DE69014842T2

公开(公告)日：1995-05-11

申请号：DE69014842

申请日：1990-12-13

Applicant: SEIKO EPSON CORP

Inventor： MATSUEDA YOJIRO

IPC: G02F1/136 ,  G02F1/133 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/36 ,  H04N3/12

公开(公告)号：DE68915413D1

公开(公告)日：1994-06-23

申请号：DE68915413

申请日：1989-12-11

Applicant: SEIKO EPSON CORP

Inventor： MATSUEDA YOJIRO

IPC: G02F1/136 ,  G02F1/1362 ,  G02F1/1368 ,  H01L21/82 ,  H01L27/12 ,  H01L29/78 ,  H01L29/786

Abstract: An active matrix type display device has a plurality of scanning lines (Y1, ... Yn), a plurality of signal lines (X1, ... Xm), and pixels (10, 30, 40, 50, 60) disposed at inter-sections of the scanning lines and the signal lines for providing a display. Each pixel is driven by way of a respective plurality of thin film transistors (1, 2, 23, 24, 31, 32, 33, 41, 42, 51, 52) which are connected to an associated pixel electrode (P). Each pixel electrode also has connected thereto a respective plurality of storage capacitors (5, 6, 25, 26, 27, 37, 38, 45, 46, 47, 55, 56, 57) arranged in parallel. Thus, if a thin film transistor or a storage capacitor connected to one of the pixel electrodes is defective, the defect in the associated pixel can be relieved simply by disconnecting as a pair both one of the thin film transistors and at least one of the storage capacitors so long as the pair includes the defective element.

公开(公告)号：DE69838277T2

公开(公告)日：2008-05-15

申请号：DE69838277

申请日：1998-04-16

Applicant: SEIKO EPSON CORP

Inventor： MATSUEDA YOJIRO ,  OZAWA TOKUROH

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36

Abstract: A driving circuit of an electro-optical device such as a liquid crystal device is compatible with digital image signals and implements a DA converting function and a gamma correcting function by a relatively simple and small-scale circuit configuration. The driving circuit of the liquid crystal device is provided with a DAC 3 for issuing a voltage signal Vc corresponding to an N bits of digital image data DA that indicate gray scale to a signal line of the liquid crystal device. Depending on whether the value of a most significant bit is "0" or "1," the DAC 3 brings the output driving voltage characteristics close to the optical characteristics of the liquid crystal device according to a pair of first or second reference voltage so as to make a gamma correction.

公开(公告)号：DE69830954T2

公开(公告)日：2006-01-12

申请号：DE69830954

申请日：1998-01-29

Applicant: SEIKO EPSON CORP

Inventor： MATSUEDA YOJIRO

IPC: G02F1/13 ,  G02F1/133 ,  G02F1/1339 ,  G02F1/1362 ,  G09F9/30 ,  G09G3/00 ,  G09G3/20 ,  G09G3/36 ,  H03M1/76 ,  H03M1/80 ,  H03M1/82

Abstract: A digital driver (330), having the function of enabling an output terminal to be in high-impedance condition, for driving data lines, and an inspection circuit (340) provided at ends of the data lines opposite to the digital driver are provided. The inspection circuit (340) includes bidirectional switches provided for each of the plurality of respective data lines, and control means for controlling the switching of the switches. By using the inspection circuit provided at the opposite ends of the data lines, not only inspections of data-line disconnection or digital-driver output but also determination of whether or not there is a point defect can be performed. In addition, since the circuit is designed only for inspection, its size is extremely small, and the circuit can be disposed in a dead space.

公开(公告)号：SG111019A1

公开(公告)日：2005-05-30

申请号：SG200103381

申请日：2001-06-07

Applicant: SEIKO EPSON CORP

Inventor： OZAWA TOKURO ,  ISHIGURO HIDETO ,  MATSUEDA YOJIRO

IPC: G09G3/20 ,  G02F1/133 ,  G09G3/36 ,  C09G3/36

Abstract: The invention obtains high-quality display by suppressing display unevenness. Sub-pixels are disposed correspondingly to each set of the intersections between 3m pairs of paired scanning lines, which are formed in such a manner as to extend in the X-direction, and n pairs of paired data lines, which are a digital data line and an analog data line and extend in the Y-direction. Further, a set of sub-pixels consecutively arranged in the Y-direction is driven as one pixel. In this case, in a first mode, each of the sub-pixels of one pixel turns on or off according to gradation data representing the gradation level of this pixel. Further, in a second mode, a voltage signal representing the gradation level of this pixel is applied to the sub-pixels of one pixel. Furthermore, in a first case of the second mode, the voltage signals are supplied by the first data line driving circuit in line sequence. Moreover, in a second case of the second mode, voltage signals are supplied by a second data line driving circuit in point sequence.

公开(公告)号：DE69431636T2

公开(公告)日：2003-06-26

申请号：DE69431636

申请日：1994-07-26

Applicant: SEIKO EPSON CORP

Inventor： MIYASAKA MITSUTOSHI ,  MATSUEDA YOJIRO ,  TAKENAKA SATOSHI

IPC: G02F1/1362 ,  G09G3/20 ,  G09G3/36 ,  H01L21/205 ,  H01L21/336 ,  H01L29/786 ,  G02F1/136

Abstract: An objective of the present invention is to provide a high-performance thin-film semiconductor device and a simple fabrication method therefor. After a silicon film is deposited at 580 DEG C or less and at a deposition rate of 6 ANGSTROM /minute or more, thermal oxidation is performed. This ensures an easy and simple fabrication of a high-performance thin-film semiconductor device. A further objective of the present invention is to implement a thin-film semiconductor device capable of low-voltage, high-speed drive. The short-channel type of TFT circuit with an LDD structure can reduce a voltage, increase speed and restrain the power consumption, enabling a higher breakdown voltage. Speeds can be further accelerated by optimizing the maximum impurity concentration of an LDD portion, that of source and drain portions, the LDD length, and the channel length. A display device or display system using these TFTs can be configured such that drive signals are at or below the TTL level.

公开(公告)号：SG64308A1

公开(公告)日：1999-04-27

申请号：SG1996002597

申请日：1994-07-26

Applicant: SEIKO EPSON CORP

Inventor： MIYASAKA MITSUTOSHI ,  MATSUEDA YOJIRO ,  TAKENAKA SATOSHI

IPC: G02F1/1362 ,  G09G3/20 ,  G09G3/36 ,  H01L21/205 ,  H01L21/336 ,  H01L29/786

Abstract: An objective of the present invention is to provide a high-performance thin-film semiconductor device and a simple fabrication method therefor. After a silicon film is deposited at 580 DEG C or less and at a deposition rate of 6 ANGSTROM /minute or more, thermal oxidation is performed. This ensures an easy and simple fabrication of a high-performance thin-film semiconductor device. A further objective of the present invention is to implement a thin-film semiconductor device capable of low-voltage, high-speed drive. The short-channel type of TFT circuit with an LDD structure can reduce a voltage, increase speed and restrain the power consumption, enabling a higher breakdown voltage. Speeds can be further accelerated by optimizing the maximum impurity concentration of an LDD portion, that of source and drain portions, the LDD length, and the channel length. A display device or display system using these TFTs can be configured such that drive signals are at or below the TTL level.

公开(公告)号：EP0895220A4

公开(公告)日：2002-11-13

申请号：EP98901073

申请日：1998-01-29

Applicant: SEIKO EPSON CORP

Inventor： MATSUEDA YOJIRO

IPC: G02F1/13 ,  G02F1/133 ,  G02F1/1339 ,  G02F1/1362 ,  G09F9/30 ,  G09G3/00 ,  G09G3/20 ,  G09G3/36 ,  H03M1/76 ,  H03M1/80 ,  H03M1/82

CPC classification number: G09G3/006 ,  G02F1/1309 ,  G02F1/1339 ,  G02F1/13454 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/0259 ,  G09G2310/027 ,  G09G2330/12 ,  H03M1/765 ,  H03M1/804 ,  H03M1/822

Abstract: A digital driver (330) having a function capable of setting an output end in a high impedance state and adapted for driving a data line, and an inspection circuit (340) provided on an end of the data line opposite to the side of the digital driver are provided. The inspection circuit (340) has a bidirectional switch provided for each of a plurality of data lines, and control means for controlling opening and closing of the switch. Using the inspection circuit provided on the opposite side of the data line, discrimination on presence/absence of point defects is enabled in addition to inspection of disconnection of the data line and the digital driver output. Since the inspection circuit is an exclusive circuit for inspection, it is extremely small in size and may be provided in a dead space.

Abstract translation: 设置在数据线的端部设置相对的数字驱动器的数字驱动器（330），其具有使得能够输出端是在高阻抗状态下，用于驱动数据线的功能，并在检查电路（340）。 检查电路（340）包括：提供给每个的respectivement数据线，所述多个双向开关，以及控制装置，用于控制所述开关的切换。 通过使用在数据线的相对端，不仅数据线断开或数字输出驱动器的检查，但如此确定的是否存在是能够进行点缺陷所提供的检查电路。 此外，由于电路只检查设计，它的尺寸非常小，该电路可以在一个死空间来配置。

公开(公告)号：EP1146501A4

公开(公告)日：2005-08-10

申请号：EP00966521

申请日：2000-10-16

Applicant: SEIKO EPSON CORP

Inventor： MATSUEDA YOJIRO

IPC: G09G3/32 ,  G09G3/36 ,  G02F1/133

CPC classification number: G09G3/3233 ,  G09G3/2074 ,  G09G3/3291 ,  G09G3/3648 ,  G09G3/3688 ,  G09G5/393 ,  G09G5/395 ,  G09G2300/0408 ,  G09G2300/0443 ,  G09G2300/0809 ,  G09G2300/0842 ,  G09G2310/027

Abstract: A display where the efficiency of layout is taken into account when a peripheral circuit is designed integrally on a glass substrate. An active matrix LCD section (2) where a plurality of scanning lines and data lines are formed in a plaid pattern corresponding to dots, an active element is provided at each intersection, and display employing liquid crystal is controlled by driving the scanning lines and data lines, a row decoder (31) for selecting one of the scanning lines, a memory cell section (56) where memory cells the number of which is so determined that the image signals for controlling display of at least one line of dots on a display drive section can be stored in the memory cells are allotted according to the length of the display drive section in the row direction of the display drive section, a column decoder section (51) for selecting a memory cell holding an inputted image signal, a column selection switch (53) switched according to the selection by the column decoder section (51) and an image signal to store the image signal in the selected memory, and a k-bit DAC section (41) for driving a data line according to the image signal stored in the memory cell section are integrated on a substrate.

Abstract translation: 为了在布置效率等方面获得显示装置，在玻璃基板上整体形成外围电路的情况下。 集成在基板上并与其形成一体的有源矩阵LCD部分2，该有源矩阵LCD部分2具有多个扫描线和形成为与点对应的格子形式的多个数据线，以及根据相应交点的有源元件，以使用 通过驱动扫描线和数据线的液晶，用于选择扫描线的行解码器31，具有能够存储图像信号的存储单元的存储单元56，用于在至少一个 显示驱动部分的行，并且被分配为与显示驱动部分的行方向上的长度相对应;列解码器部分51，用于选择要输入的图像信号要存储的存储单元;列选择开关部分53， 由列解码器部分51选择的图像信号和图像信号，并将图像信号存储到所选择的存储器单元，以及一个k位DAC部分41f 或者基于存储在存储单元部分中的图像信号来驱动数据线。