公开(公告)号：US5920084A

公开(公告)日：1999-07-06

申请号：US962892

申请日：1997-11-14

申请人： Tieer Gu ,  Willem den Boer

发明人： Tieer Gu ,  Willem den Boer

IPC分类号： G02F1/1343 ,  G02F1/1333 ,  G02F1/136 ,  G02F1/1362 ,  G02F1/1368 ,  H01L21/336 ,  H01L21/77 ,  H01L21/84 ,  H01L27/12 ,  H01L27/146 ,  H01L29/04 ,  H01L29/786 ,  H01L31/036 ,  H01L31/0376 ,  H01L31/20

CPC分类号： H01L27/14603 ,  G02F1/136213 ,  G02F1/136227 ,  G02F1/136286 ,  H01L27/12 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/14676 ,  H01L29/66765 ,  H01L29/78636 ,  G02F1/1368 ,  G02F2001/133357 ,  G02F2001/13606

摘要： A liquid crystal display having an increased pixel aperture ratio is disclosed along with a method of making same. An array of a-Si TFTs is deposited on a transparent substrate. Subsequently, an organic insulating layer (e.g. Benzocyclobutene) and a corresponding array of pixel electrodes are deposited over the TFT array so that the pixel electrodes overlap the display address lines thereby increasing the display's pixel aperture ratio. The low dielectric constant .epsilon. (e.g. about 2.7) and relatively high thickness (e.g. greater than about 1.5 .mu.m) of the insulating layer reduce the pixel electrode-address line parasitic capacitance C.sub.PL in the overlap areas thereby reducing cross-talk (or capacitive coupling) in the display. In sum, an increased pixel aperture ratio is achieved without sacrificing display performance.

摘要翻译： 公开了具有增加的像素孔径比的液晶显示器及其制造方法。 a-Si TFT阵列沉积在透明衬底上。 随后，在TFT阵列上沉积有机绝缘层（例如苯并环丁烯）和相应的像素电极阵列，使得像素电极与显示地址线重叠，从而增加显示器的像素孔径比。 绝缘层的低介电常数ε（例如约2.7）和相对较高的厚度（例如大于约1.5μm）减小了重叠区域中的像素电极 - 地址线寄生电容CPL，从而减少串扰（或电容耦合 ）在显示。 总之，在不牺牲显示性能的情况下实现增加的像素孔径比。

公开(公告)号：US5917199A

公开(公告)日：1999-06-29

申请号：US079225

申请日：1998-05-15

申请人： Young Hee Byun ,  Yiwei Lu

发明人： Young Hee Byun ,  Yiwei Lu

IPC分类号： H01L21/336 ,  H01L21/77 ,  H01L27/12 ,  H01L27/146 ,  H01L29/786 ,  H01L29/04

CPC分类号： H01L27/14665 ,  H01L27/1214 ,  H01L29/66765 ,  H01L29/78618

摘要： A TFT structure includes a variably doped contact layer system in order to reduce leakage current characteristics and increase mobility of the TFT. Such TFTs may be utilized in, for example, X-ray imagers or liquid crystal displays. In certain embodiments, the contact layer system is lightly doped adjacent a semiconductor or channel layer, and is more heavily doped adjacent the source/drain electrodes. The variation in doping density of the contact layer system may be performed in a step-like manner, gradually, continuously, or in any other suitable manner. In certain embodiments, the contact layer system may include a single layer which is deposited over an intrinsic semiconductor layer, with the amount of dopant gas being used during the deposition process being adjusted through the deposition of the single layer so as to cause the doping density to vary (increase or decrease) throughout the thickness of the system/layer.

摘要翻译： TFT结构包括可变掺杂的接触层系统，以便减少漏电流特性并增加TFT的迁移率。 这样的TFT可以用于例如X射线成像器或液晶显示器。 在某些实施例中，接触层系统在半导体或沟道层附近被轻掺杂，并且在源/漏电极附近被更多地掺杂。 接触层系统的掺杂密度的变化可以逐步，连续地或以任何其它合适的方式以阶梯状的方式进行。 在某些实施例中，接触层系统可以包括沉积在本征半导体层上的单层，通过沉积单层来调整沉积过程期间使用的掺杂剂气体的量，以便引起掺杂密度 在整个系统/层的厚度上变化（增加或减少）。

公开(公告)号：US5895106A

公开(公告)日：1999-04-20

申请号：US876043

申请日：1997-06-13

申请人： John A. VanderPloeg ,  Gang Xu ,  Patrick F. Brinkley ,  Michael R. Jones

发明人： John A. VanderPloeg ,  Gang Xu ,  Patrick F. Brinkley ,  Michael R. Jones

IPC分类号： G02F1/13363 ,  G02F1/139 ,  G02F1/1335

CPC分类号： G02F1/133632 ,  G02F1/133634 ,  G02F1/1396 ,  G02F2413/105

摘要： A normally white (NW) twisted nematic liquid crystal display (LCD) outputs improved viewing characteristics which are defined by high contrast ratios and/or reduced inversion. The display includes a pair of negative tilted retarders (#2 and #6) located on one side of the liquid crystal layer (#10), each of the tilted retarders including a tilt or incline angle which varies throughout the thickness of the layer. Additionally, one or two negative uniaxial or biaxial retarders (#4 and #7) are provided on the same side of the liquid crystal layer as the tilted retarders. As a result of the particular orientations, alignments, and retardation values described in the different embodiments, the display exhibits improved contrast and reduced inversion.

摘要翻译： 正常白色（NW）扭曲向列型液晶显示器（LCD）输出改善的观看特性，其由高对比度和/或减少的反转定义。 显示器包括位于液晶层（＃10）的一侧的一对负倾斜延迟器（＃2和＃6），每个倾斜延迟器包括在层的整个厚度上变化的倾斜或倾斜角度。 此外，在倾斜延迟器的液晶层的同一侧设置一个或两个负单轴或双轴延迟器（＃4和＃7）。 作为不同实施例中描述的特定取向，对准和延迟值的结果，显示器显示出改进的对比度和减少的反转。

公开(公告)号：US5793458A

公开(公告)日：1998-08-11

申请号：US768502

申请日：1996-12-18

申请人： John A. VanderPloeg ,  Gang Xu ,  Adiel Abileah

发明人： John A. VanderPloeg ,  Gang Xu ,  Adiel Abileah

摘要： A normally white twisted nematic liquid crystal display is provided for outputting improved viewing characteristics which are defined by high contrast ratios and reduced inversion. The display includes both positive and negative retardation films, the negative films being biaxial and defined by n.sub.x >n.sub.y >n.sub.z in certain embodiments where the "z" direction is substantially perpendicular to the film plane and the "x" and "y" directions are substantially parallel to the film plane. By providing the positive and biaxial negative retarders with specific retardation values and/or ratios, improved viewing characteristics are provided. According to other embodiments, a positive and a negative (uniaxial or biaxial) retarder may be provided on only one side of the liquid crystal layer.

公开(公告)号：US5780871A

公开(公告)日：1998-07-14

申请号：US832345

申请日：1997-04-02

申请人： Willem den Boer ,  John Z. Z. Zhong ,  Tieer Gu

发明人： Willem den Boer ,  John Z. Z. Zhong ,  Tieer Gu

IPC分类号： G02F1/1343 ,  G02F1/1333 ,  G02F1/136 ,  G02F1/1362 ,  G02F1/1368 ,  H01L21/336 ,  H01L21/77 ,  H01L21/84 ,  H01L27/12 ,  H01L27/146 ,  H01L29/04 ,  H01L29/786 ,  H01L31/036 ,  H01L31/0376 ,  H01L31/20

CPC分类号： H01L27/14603 ,  G02F1/136213 ,  G02F1/136227 ,  G02F1/136286 ,  H01L27/12 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/14676 ,  H01L29/66765 ,  H01L29/78636 ,  G02F1/1368 ,  G02F2001/133357 ,  G02F2001/13606

摘要： This invention is related to an active matrix liquid crystal display (AMLCD) having a high pixel aperture ratio. The display has an increased pixel aperture ratio because the pixel electrodes are formed over the insulating layer so as to overlap portions of the array address lines. Both the manufacturability and capacitive cross-talk of the TFT-based device are improved due to the use of a photo-imageable insulating layer between the pixel electrodes and the address lines.

摘要翻译： 本发明涉及具有高像素孔径比的有源矩阵液晶显示器（AMLCD）。 显示器具有增加的像素孔径比，因为像素电极形成在绝缘层上，以便与阵列地址线的部分重叠。 由于在像素电极和地址线之间使用可光致抗蚀绝缘层，TFT器件的可制造性和电容性串扰都得到改善。

公开(公告)号：US5739881A

公开(公告)日：1998-04-14

申请号：US826520

申请日：1997-04-03

申请人： Gang Xu ,  John A. VanderPloeg

发明人： Gang Xu ,  John A. VanderPloeg

IPC分类号： G02F1/1333 ,  G02F1/13 ,  G02F1/133 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/139

CPC分类号： G02F1/13363 ,  G02F1/133634 ,  G02F1/133784 ,  G02F1/1396 ,  G02F2001/133531 ,  G02F2202/40 ,  G02F2413/02 ,  G02F2413/04 ,  G02F2413/08 ,  G02F2413/11 ,  G02F2413/13 ,  G02F2413/14

摘要： A normally white twisted nematic liquid crystal display is provided for outputting improved viewing characteristics which are defined by high contrast ratios and reduced inversion. The display includes both positive and negative retardation films, the negative films being defined by n.sub.x =n.sub.y >n.sub.z where the "z" direction is substantially perpendicular to the film plane and the "x" and "y" directions are substantially parallel to the film plane. According to certain embodiments, a pair of positive and a pair of negative retardation films are provided such that the two positive retarders sandwich both the liquid crystal layer and the negative retarders therebetween. By providing the positive and negative retarders with specific retardation values and/or ratios, improved viewing characteristics are provided.

公开(公告)号：US5715028A

公开(公告)日：1998-02-03

申请号：US744950

申请日：1996-11-07

申请人： Adiel Abileah ,  Patrick F. Brinkley ,  Gang Xu

发明人： Adiel Abileah ,  Patrick F. Brinkley ,  Gang Xu

IPC分类号： G02F1/1335 ,  G02F1/13363 ,  G02F1/1347

CPC分类号： G02F1/133502 ,  G02F2001/133638

摘要： A liquid crystal display and corresponding method are provided for reducing display image reflections off of a reflection point on an external medium (e.g. cockpit canopy or automotive windshield). A retarder is provided on the front side of the display so that the polarization direction of the display image is substantially parallel to the plane of incidence when the image reaches the reflection point. Additionally, the angle of incidence .THETA..sub.i is substantially matched to the Brewster angle .THETA..sub.p in order to maximize the reduction of reflection at the reflection point. The retarder has a retardation value of from about 220-320 nm according to certain embodiments, and is a 1/2 .lambda. retarder according to preferred embodiments.

摘要翻译： 提供了一种用于减少外部介质（例如驾驶舱罩或汽车挡风玻璃）上的反射点的显示图像反射的液晶显示器和相应方法。 在显示器的前侧设置有延迟器，使得当图像到达反射点时，显示图像的偏振方向基本上平行于入射平面。 此外，入射角THETA i基本上与布鲁斯特角度THETA p相匹配，以便最大程度地减少反射点处的反射。 根据某些实施方案，缓凝剂具有约220-320nm的延迟值，并且是根据优选实施方案的+ E，fra 1/2 + EEλ延迟剂。

公开(公告)号：US5656824A

公开(公告)日：1997-08-12

申请号：US532356

申请日：1995-09-22

申请人： Willem den Boer ,  Tieer Gu

发明人： Willem den Boer ,  Tieer Gu

IPC分类号： H01L21/336 ,  H01L27/01

CPC分类号： H01L29/66765

摘要： A thin film transistor (TFT) having a reduced channel length and method of making same are disclosed for liquid crystal display (LCD) applications. The method of making the TFT includes the following process steps: (i) depositing and patterning the gate on a substrate; (ii) depositing and patterning an intrinsic a-Si layer, a n+ a-Si layer, and a source metal layer (e.g. Cr) over the gate; (iii) depositing and patterning an ITO layer to form a pixel electrode portion and a TFT source portion; (iv) etching the source metal layer so that it remains only under the ITO source portion so as to form the TFT source electrode; (v) depositing and patterning a metal (e.g. Mo) to form the drain of the TFT; and (vi) etching the n+ a-Si layer in the TFT channel area so that only the intrinsic semiconductor layer remains between the source and drain. The resulting TFT has a reduced channel length (e.g. less than about 4 .mu.m) less than the feature size of the lithography used so as to maximize I.sub.ON /C.sub.gs(ON) of the TFT. Maximizing I.sub.ON /C.sub.gs(ON) reduces pixel flickering, gray scale non-uniformity, and image retention in LCD applications.

摘要翻译： 公开了一种具有减小的沟道长度的薄膜晶体管（TFT）及其制造方法，用于液晶显示（LCD）应用。 制造TFT的方法包括以下工艺步骤：（i）在衬底上沉积和图案化栅极; （ii）在栅极上沉积和图案化本征a-Si层，n + a-Si层和源极金属层（例如Cr）; （iii）沉积和图案化ITO层以形成像素电极部分和TFT源极部分; （iv）蚀刻源极金属层，使其仅保留在ITO源极部下方，以形成TFT源电极; （v）沉积和图案化金属（例如Mo）以形成TFT的漏极; 和（vi）蚀刻TFT沟道区域中的n + a-Si层，使得只有本征半导体层保持在源极和漏极之间。 所得TFT具有比所使用的光刻特征尺寸小的通道长度（例如小于约4μm），以使TFT的ION / Cgs（ON）最大化。 最大化ION / Cgs（ON）可以降低LCD应用中的像素闪烁，灰度不均匀和图像保留。

公开(公告)号：US5650358A

公开(公告)日：1997-07-22

申请号：US519920

申请日：1995-08-28

申请人： Tieer Gu ,  Willem den Boer

发明人： Tieer Gu ,  Willem den Boer

IPC分类号： H01L21/336 ,  H01L29/45 ,  H01L29/786 ,  H01L21/465

CPC分类号： H01L29/78696 ,  H01L29/66765 ,  H01L29/458

摘要： A thin film transistor (TFT) for a liquid crystal display (LCD) and method of making same is disclosed, the TFT having a source and drain electrode where at least one of the source and drain includes first and second conductive layers offset from one another by a distance .DELTA.L so that the resulting TFT channel length L.sub.T is equal to L.sub.T =L.sub.1,2 -.DELTA.L where L.sub.1,2 is either a channel length defined in the first conductive layer or a channel length defined in the second conductive layer. The TFT manufacturing process includes the steps of: a) providing a conductive gate layer and patterning same to form a gate electrode; b) depositing a substantially transparent conductive layer (e.g. ITO) and patterning same to form a pixel electrode; c) depositing and patterning a semiconductor layer (e.g. a-Si); a doped semiconductor contact layer; and a first source-drain conductive layer so as to form a TFT island or area; d) using a single photoresist to etch a channel in the first source-drain layer and a via in a gate insulating layer so as to expose the pixel electrode; and e) depositing and patterning a second source-drain layer over the via and the etched first source-drain layer so as to form a TFT with reduced channel length L.sub.T wherein the second source-drain layer contacts the pixel electrode through the via.

摘要翻译： 公开了一种用于液晶显示器（LCD）的薄膜晶体管（TFT）及其制造方法，所述TFT具有源极和漏极，其中源极和漏极中的至少一个包括彼此偏移的第一和第二导电层 距离DELTA L，使得所得到的TFT沟道长度LT等于LT = L1,2 DELTA L，其中L1,2是在第一导电层中限定的沟道长度或在第二导电层中限定的沟道长度。 TFT制造方法包括以下步骤：a）提供导电栅极层并将其图案化以形成栅电极; b）沉积基本上透明的导电层（例如ITO）并将其图案化以形成像素电极; c）沉积和图案化半导体层（例如a-Si）; 掺杂半导体接触层; 以及第一源极 - 漏极导电层，以便形成TFT岛或区域; d）使用单个光致抗蚀剂蚀刻第一源极 - 漏极层中的沟道和栅极绝缘层中的通孔，以暴露像素电极; 以及e）在所述通孔和所述蚀刻的第一源极 - 漏极层之上沉积和图案化第二源极 - 漏极层，以便形成具有减小的沟道长度LT的TFT，其中所述第二源极 - 漏极层通过所述通孔接触所述像素电极。

公开(公告)号：US5262880A

公开(公告)日：1993-11-16

申请号：US925193

申请日：1992-08-06

申请人： Adiel Abileah

发明人： Adiel Abileah

IPC分类号： F21V5/02 ,  G02F1/1335 ,  G02F1/13357

CPC分类号： F21V5/02 ,  G02F1/133509 ,  G02F1/133604 ,  G02F2001/133607

摘要： A full color, night vision goggle compatible, liquid crystal display device achieves uniform illumination and color integrity at wide viewing angles by creating collimated, uniform light in a backlight assembly before the light reaches an IR filter having a sharp cutoff between near IR and red, and thereafter diffusing the light which is emitted from the filter to create the desired wide viewing angle.

摘要翻译： 全色夜视镜兼容的液晶显示装置通过在光到达具有在近红外和红色之间的尖锐截止的IR滤光器之前在背光组件中产生准直均匀的光，在宽视角下实现均匀的照明和颜色完整性， 然后使从过滤器发射的光扩散以产生所需的宽视角。