公开(公告)号：US07449376B2

公开(公告)日：2008-11-11

申请号：US11120992

申请日：2005-05-04

Applicant: Atsuo Isobe ,  Tatsuya Arao

Inventor： Atsuo Isobe ,  Tatsuya Arao

IPC: H01L21/84

CPC classification number: H01L21/02672 ,  H01L21/02686 ,  H01L21/2022 ,  H01L21/2026 ,  H01L27/12 ,  H01L27/1277 ,  H01L29/66757 ,  H01L29/78621 ,  H01L29/78624 ,  H01L29/78645 ,  H01L29/78675 ,  H01L29/78678

Abstract: An object of the present invention is to form a channel formation region, or a TFT formation region, using one crystal aggregate (domain) by controlling crystal location and size, thus suppressing TFT variations. According to the present invention, laser irradiation is performed selectively on an amorphous silicon film in the periphery of a channel formation region, or the periphery of a TFT formation region containing a channel formation region, source and drain region, and the like. Each TFT formation region is isolated, a metallic element for promoting crystallization (typically Ni) is added, and heat treatment is performed, thus making it possible to arbitrarily determine the locations of crystal aggregates (domains). It becomes possible to suppress variations in the TFTs by arbitrarily controlling the crystal aggregate (domain) locations.

Abstract translation: 本发明的目的是通过控制晶体位置和尺寸来形成使用一个晶体聚集体（畴）的沟道形成区域或TFT形成区域，从而抑制TFT变化。 根据本发明，在沟道形成区域的外围的非晶硅膜或包含沟道形成区域，源极和漏极区域的TFT形成区域的周边上的选择性地进行激光照射。 每个TFT形成区被隔离，加入用于促进结晶的金属元素（通常为Ni），并且进行热处理，从而可以任意地确定晶体聚集体（畴）的位置。 可以通过任意地控制晶体聚集体（畴）位置来抑制TFT的变化。

公开(公告)号：US20080272376A1

公开(公告)日：2008-11-06

申请号：US12170588

申请日：2008-07-10

Applicant: Tatsuya Arao ,  Atsuo Isobe ,  Toru Takayama

Inventor： Tatsuya Arao ,  Atsuo Isobe ,  Toru Takayama

IPC: H01L33/00

CPC classification number: G02F1/133305 ,  G02F1/1362 ,  G02F1/136213 ,  G02F1/136227 ,  G02F2001/136295 ,  H01L27/124 ,  H01L27/1255 ,  H01L27/3244 ,  H01L29/66742 ,  H01L29/78603

Abstract: In a semiconductor device having a substrate which has a metal surface, an insulating film which is formed on the substrate having the metal surface, and a pixel unit which is formed on the insulating film; the pixel unit includes a TFT, and wiring lines connected with the TFT, and a storage capacitor is constituted by the substrate (11) having the metal surface, the insulating film (12), and the wiring line (21). As the insulating film is thinner, and as the area of a region where the insulating film and the wiring line lie in contact is larger, the storage capacitor is endowed with a larger capacity.

Abstract translation: 在具有金属表面的基板的半导体器件中，形成在具有金属表面的基板上的绝缘膜和形成在绝缘膜上的像素单元; 像素单元包括TFT和与TFT连接的布线，并且存储电容器由具有金属表面的基板（11），绝缘膜（12）和布线（21）构成。 由于绝缘膜更薄，并且随着绝缘膜和布线接触的区域的面积较大，所以存储电容器具有较大的容量。

公开(公告)号：US20080179599A1

公开(公告)日：2008-07-31

申请号：US11876429

申请日：2007-10-22

Applicant: Tetsuji YAMAGUCHI ,  Atsuo Isobe ,  Satoru Saito

Inventor： Tetsuji YAMAGUCHI ,  Atsuo Isobe ,  Satoru Saito

IPC: H01L27/14

CPC classification number: H01L27/1259 ,  H01L27/1214

Abstract: A salicide process is conducted to a thin film integrated circuit without worrying about damages to a glass substrate, and thus, high-speed operation of a circuit can be achieved. A base metal film, an oxide and a base insulating film are formed over a glass substrate. A TFT having a sidewall is formed over the base insulating film, and a metal film is formed to cover the TFT. Annealing is conducted by RTA or the like at such a temperature that does not cause shrinkage of the substrate, and a high-resistant metal silicide layer is formed in source and drain regions. After removing an unreacted metal film, laser irradiation is conducted for the second annealing; therefore a silicide reaction proceeds and the high-resistant metal silicide layer becomes a low-resistant metal silicide layer. In the second annealing, a base metal film absorbs and accumulates heat of the laser irradiation, and a semiconductor layer is supplied with beat of the base metal film in addition to heat of the laser irradiation, thereby enhancing efficiency of the silicide reaction in the source and drain regions.

Abstract translation: 对薄膜集成电路进行自对准处理，而不用担心对玻璃基板的损坏，因此可以实现电路的高速操作。 在玻璃基板上形成贱金属膜，氧化物和基底绝缘膜。 在基底绝缘膜上形成具有侧壁的TFT，并且形成覆盖TFT的金属膜。 在不会引起基板收缩的温度下由RTA等进行退火，在源极和漏极区域形成高阻金属硅化物层。 在除去未反应的金属膜之后，对第二次退火进行激光照射; 因此进行硅化物反应，高阻金属硅化物层变成低电阻金属硅化物层。 在第二退火中，贱金属膜吸收并累积激光照射的热量，并且除了激光照射的热量之外，还向半导体层供给贱金属膜的节拍，从而提高源的硅化物反应的效率 和漏区。

公开(公告)号：US07344925B2

公开(公告)日：2008-03-18

申请号：US11064820

申请日：2005-02-25

Applicant: Kiyoshi Kato ,  Toshihiko Saito ,  Atsuo Isobe ,  Toru Takayama ,  Junya Maruyama ,  Yuugo Goto ,  Yumiko Ohno

Inventor： Kiyoshi Kato ,  Toshihiko Saito ,  Atsuo Isobe ,  Toru Takayama ,  Junya Maruyama ,  Yuugo Goto ,  Yumiko Ohno

IPC: H01L21/00 ,  H01L21/84 ,  H01L21/336 ,  H01L21/8234 ,  H01L21/331

CPC classification number: H01L29/78696 ,  H01L27/12 ,  H01L27/1281 ,  H01L29/66757 ,  H01L29/78675 ,  H01L2221/68368

Abstract: An object of the present invention is to provide a semiconductor device formed by laser crystallization by which formation of grain boundaries in the TFT channel formation region can be avoided, and a method of manufacturing the same. Still another object of the present invention is to provide a method of designating the semiconductor device. The present invention relates to a semiconductor device with a plurality of cells each having a plurality of TFTs that have the same channel length direction, in which the plural cells form a plurality of columns along the channel length direction, in which an island-like semiconductor film of each of the plural TFTs is crystallized by laser light running in the channel length direction, in which a channel formation region of the island-like semiconductor film is placed on a depressive portion of a base film that has a rectangular or stripe pattern concave and convex with the channel length direction matching the longitudinal direction of the depressive portion, and in which a plurality of wires for electrically connecting the plural cells with one another are formed between the plural columns.

Abstract translation: 本发明的目的是提供一种通过激光晶化形成的半导体器件及其制造方法，可以避免TFT沟道形成区域中的晶界的形成。 本发明的另一个目的是提供一种指定半导体器件的方法。 本发明涉及具有多个单元的半导体器件，每个单元具有多个具有相同沟道长度方向的TFT，其中多个单元沿着沟道长度方向形成多个列，其中岛状半导体 通过在沟道长度方向上行进的激光，使多个TFT中的每一个的膜结晶，其中岛状半导体膜的沟道形成区域被放置在基膜的具有矩形或条纹图案凹部的凹部 并且其中通道长度方向与凹陷部分的纵向相匹配的凸起，并且其中在多个柱之间形成有用于彼此电连接多个单元的多根导线。

公开(公告)号：US07312473B2

公开(公告)日：2007-12-25

申请号：US10329993

申请日：2002-12-27

Applicant: Jun Koyama ,  Atsuo Isobe ,  Hiroshi Shibata ,  Shunpei Yamazaki

Inventor： Jun Koyama ,  Atsuo Isobe ,  Hiroshi Shibata ,  Shunpei Yamazaki

IPC: H01L29/00 ,  H01L29/94 ,  H01L33/00

CPC classification number: H01L29/78696 ,  H01L27/1296 ,  H01L27/3244 ,  H01L29/66757 ,  H01L29/78675

Abstract: In display devices using thin film transistors, a graphoepitaxy is used for a semiconductor layer crystallizing process. Thus, a display device in which crystallinity is improved, a variation in characteristics of thin film transistors is reduced, display nonuniformity is less, and a display quality is superior is provided. Steps are formed on a substrate in advance and an amorphous silicon film is formed thereon, and then laser crystallization is conducted in a direction perpendicular to the steps.

Abstract translation: 在使用薄膜晶体管的显示装置中，使用石墨刻蚀技术进行半导体层结晶工艺。 因此，结晶度提高的显示装置，薄膜​​晶体管的特性变化减小，显示不均匀性低，显示质量优异。 预先在基板上形成台阶，在其上形成非晶硅膜，然后在与台阶垂直的方向上进行激光结晶。

公开(公告)号：US07288480B2

公开(公告)日：2007-10-30

申请号：US11110918

申请日：2005-04-21

Applicant: Tetsuji Yamaguchi ,  Atsuo Isobe ,  Satoru Saito

Inventor： Tetsuji Yamaguchi ,  Atsuo Isobe ,  Satoru Saito

IPC: H01L21/44

CPC classification number: H01L27/1259 ,  H01L27/1214

Abstract: A salicide process is conducted to a thin film integrated circuit without worrying about damages to a glass substrate, and thus, high-speed operation of a circuit can be achieved. A base metal film, an oxide and a base insulating film are formed over a glass substrate. A TFT having a sidewall is formed over the base insulating film, and a metal film is formed to cover the TFT. Annealing is conducted by RTA or the like at such a temperature that does not cause shrinkage of the substrate, and a high-resistant metal silicide layer is formed in source and drain regions. After removing an unreacted metal film, laser irradiation is conducted for the second annealing; therefore a silicide reaction proceeds and the high-resistant metal silicide layer becomes a low-resistant metal silicide layer. In the second annealing, a base metal film absorbs and accumulates heat of the laser irradiation, and a semiconductor layer is supplied with heat of the base metal film in addition to heat of the laser irradiation, thereby enhancing efficiency of the silicide reaction in the source and drain regions.

Abstract translation: 对薄膜集成电路进行自对准处理，而不用担心对玻璃基板的损坏，因此可以实现电路的高速操作。 在玻璃基板上形成贱金属膜，氧化物和基底绝缘膜。 在基底绝缘膜上形成具有侧壁的TFT，并且形成覆盖TFT的金属膜。 在不会引起基板收缩的温度下由RTA等进行退火，在源极和漏极区域形成高阻金属硅化物层。 在除去未反应的金属膜之后，对第二次退火进行激光照射; 因此进行硅化物反应，高阻金属硅化物层变成低电阻金属硅化物层。 在第二退火中，贱金属膜吸收并累积激光照射的热量，并且除了激光照射的热量之外，还向半导体层供应贱金属膜的热量，从而提高源的硅化物反应的效率 和漏区。

公开(公告)号：US07282380B2

公开(公告)日：2007-10-16

申请号：US11079262

申请日：2005-03-15

Applicant: Junya Maruyama ,  Atsuo Isobe ,  Susumu Okazaki ,  Koichiro Tanaka ,  Yoshiaki Yamamoto ,  Koji Dairiki ,  Tomoko Tamura

Inventor： Junya Maruyama ,  Atsuo Isobe ,  Susumu Okazaki ,  Koichiro Tanaka ,  Yoshiaki Yamamoto ,  Koji Dairiki ,  Tomoko Tamura

IPC: H01L21/00 ,  H01L21/76

CPC classification number: H01L27/1266 ,  H01L21/6835 ,  H01L24/83 ,  H01L27/1214 ,  H01L27/1218 ,  H01L2221/6835 ,  H01L2221/68368 ,  H01L2224/83 ,  H01L2924/01029 ,  H01L2924/12041 ,  H01L2924/12042 ,  H01L2924/12044 ,  H01L2924/14 ,  H01L2924/15787 ,  H01L2924/19041 ,  H01L2924/3025 ,  H01L2924/3512 ,  H01L2924/00

Abstract: It is an object of the present invention to provide a method for manufacturing a semiconductor device, capable of keeping a peeling layer from being peeled from a substrate in the phase before the completion of a semiconductor element and peeling a semiconductor element rapidly. It is considered that a peeling layer tends to be peeled from a substrate because the stress is applied to a peeling layer due to the difference in thermal expansion coefficient between a substrate and a peeling layer, or because the volume of a peeling layer is reduced and thus the stress is applied thereto by crystallization of the peeling layer due to heat treatment. Therefore, according to one feature of the invention, the adhesion of a substrate and a peeling layer is enhanced by forming an insulating film (buffer film) for relieving the stress on the peeling layer between the substrate and the peeling layer before forming the peeling layer over the substrate.

公开(公告)号：US20070120127A1

公开(公告)日：2007-05-31

申请号：US11698864

申请日：2007-01-29

Applicant: Atsuo Isobe ,  Koji Dairiki ,  Hiroshi Shibata ,  Chiho Kokubo ,  Tatsuya Arao ,  Masahiko Hayakawa ,  Hidekazu Miyairi ,  Akihisa Shimomura ,  Koichiro Tanaka ,  Shunpei Yamazaki ,  Mai Akiba

Inventor： Atsuo Isobe ,  Koji Dairiki ,  Hiroshi Shibata ,  Chiho Kokubo ,  Tatsuya Arao ,  Masahiko Hayakawa ,  Hidekazu Miyairi ,  Akihisa Shimomura ,  Koichiro Tanaka ,  Shunpei Yamazaki ,  Mai Akiba

IPC: H01L29/76 ,  H01L29/04 ,  H01L29/06

CPC classification number: H01L21/02683 ,  H01L21/2022 ,  H01L27/1281 ,  H01L27/1296 ,  H01L29/66757 ,  H01L29/78603 ,  H01L29/78675 ,  H01L29/78696

Abstract: It is a problem to provide a semiconductor device production system using a laser crystallization method capable of preventing grain boundaries from forming in a TFT channel region and further preventing conspicuous lowering in TFT mobility due to grain boundaries, on-current decrease or off-current increase. An insulation film is formed on a substrate, and a semiconductor film is formed on the insulation film. Due to this, preferentially formed is a region in the semiconductor film to be concentratedly applied by stress during crystallization with laser light. Specifically, a stripe-formed or rectangular concavo-convex is formed on the semiconductor film. Continuous-oscillation laser light is irradiated along the striped concavo-convex or along a direction of a longer or shorter axis of rectangle.

Abstract translation: 提供一种使用能够防止在TFT沟道区域中形成晶界的激光晶体化方法的半导体器件制造系统的问题，并且进一步防止由于晶界引起的TFT迁移率的明显降低，导通电流降低或截止电流增加 。 在基板上形成绝缘膜，在绝缘膜上形成半导体膜。 由此，优选形成半导体膜中通过激光在结晶期间通过应力集中施加的区域。 具体地，在半导体膜上形成条状或矩形凹凸。 连续振荡激光沿着条纹凹凸或长轴或短轴方向照射。

公开(公告)号：US20070070346A1

公开(公告)日：2007-03-29

申请号：US11600833

申请日：2006-11-17

Applicant: Atsuo Isobe ,  Shunpei Yamazaki ,  Koji Dairiki ,  Hiroshi Shibata ,  Chiho Kokubo ,  Tatsuya Arao ,  Masahiko Hayakawa ,  Hidekazu Miyairi ,  Akihisa Shimomura ,  Koichiro Tanaka ,  Mai Akiba

Inventor： Atsuo Isobe ,  Shunpei Yamazaki ,  Koji Dairiki ,  Hiroshi Shibata ,  Chiho Kokubo ,  Tatsuya Arao ,  Masahiko Hayakawa ,  Hidekazu Miyairi ,  Akihisa Shimomura ,  Koichiro Tanaka ,  Mai Akiba

IPC: G01J3/30

CPC classification number: H01L27/1222 ,  B23K26/0738 ,  H01L21/02354 ,  H01L21/02356 ,  H01L21/02675 ,  H01L21/02683 ,  H01L21/02686 ,  H01L21/02691 ,  H01L21/2026 ,  H01L21/32139 ,  H01L21/84 ,  H01L27/1214 ,  H01L27/1218 ,  H01L27/124 ,  H01L27/1255 ,  H01L27/1274 ,  H01L27/1281 ,  H01L27/1296 ,  H01L29/66757 ,  H01L29/78603 ,  H01L29/78675 ,  H01L29/78696 ,  Y10S118/90 ,  Y10T117/10 ,  Y10T117/1004 ,  Y10T117/1008

Abstract: A semiconductor device production system using a laser crystallization method is provided which can avoid forming grain boundaries in a channel formation region of a TFT, thereby preventing grain boundaries from lowering the mobility of the TFT greatly, from lowering ON current, and from increasing OFF current. Rectangular or stripe pattern depression and projection portions are formed on an insulating film. A semiconductor film is formed on the insulating film. The semiconductor film is irradiated with continuous wave laser light by running the laser light along the stripe pattern depression and projection portions of the insulating film or along the major or minor axis direction of the rectangle. Although continuous wave laser light is most preferred among laser light, it is also possible to use pulse oscillation laser light in irradiating the semiconductor film.

Abstract translation: 提供了一种使用激光晶化方法的半导体器件制造系统，其可以避免在TFT的沟道形成区域中形成晶界，从而防止晶界大大降低TFT的迁移率，降低导通电流，并且提高截止电流 。 在绝缘膜上形成矩形或条纹图案凹陷和突出部分。 在绝缘膜上形成半导体膜。 通过沿着条形图案凹陷和绝缘膜的突出部分沿着矩形的长轴或短轴方向运行激光来对连续波激光照射半导体膜。 尽管在激光中最优选连续波激光，但也可以在照射半导体膜时使用脉冲振荡激光。

公开(公告)号：US07166863B2

公开(公告)日：2007-01-23

申请号：US10941823

申请日：2004-09-16

Applicant: Shunpei Yamazaki ,  Kiyoshi Kato ,  Atsuo Isobe ,  Hidekazu Miyairi ,  Hideomi Suzawa ,  Yutaka Shionoiri ,  Hiroyuki Miyake

Inventor： Shunpei Yamazaki ,  Kiyoshi Kato ,  Atsuo Isobe ,  Hidekazu Miyairi ,  Hideomi Suzawa ,  Yutaka Shionoiri ,  Hiroyuki Miyake

IPC: H01L29/04 ,  H01L31/036

CPC classification number: H01L21/02609 ,  H01L21/2026 ,  H01L27/12 ,  H01L27/1281 ,  H01L29/66757 ,  H01L29/78621 ,  H01L29/78675 ,  H01L29/78696

Abstract: A semiconductor element which is capable of operating at a high speed, high in an electric current drive capability, and small in fluctuation among a plurality of elements, and a semiconductor device including the semiconductor element are provided. The semiconductor element has a first crystalline semiconductor region including plural crystal orientations without practically having a grain boundary on an insulating surface, the first crystalline semiconductor region being provided to be jointly connected to a conductive region including the first crystalline semiconductor region and a second crystalline semiconductor region, in which the conductive region is provided astride insulating films extending in a linear stripe pattern.

Abstract translation: 提供能够高速运行，电流驱动能力高，多个元件之间波动小的半导体元件，以及包括半导体元件的半导体器件。 半导体元件具有包括多个晶体取向的第一晶体半导体区域，而绝缘表面实际上不具有晶界，第一晶体半导体区域被设置为共同连接到包括第一晶体半导体区域的导电区域和第二晶体半导体区域 区域，其中导电区域被设​​置成跨过线性条纹图案延伸的绝缘膜。