Optical head device for recording/reproduction for recording medium
using plural light spots
    1.
    发明授权
    Optical head device for recording/reproduction for recording medium using plural light spots 失效
    用于使用多个光斑的记录介质的记录/再现的光学头装置

    公开(公告)号:US5295125A

    公开(公告)日:1994-03-15

    申请号:US12404

    申请日:1993-02-02

    IPC分类号: G11B7/09 G11B7/095

    CPC分类号: G11B7/094

    摘要: There is disclosed an optical head device in which at least two laser beams having different wavelengths are converged as light spots on a recording medium or optical disk by use of one objective lens and one of the two laser beams is subjected to a focusing control while the recording or reproduction of a signal on or from the optical disk is made using the other laser beam. When the one laser beam is subjected to the focusing control, the deviation of a converging position of the other laser beam for the optical disk may occur due to a difference in refractive index between transparent substrates of plural kinds of optical disks. In such a case, the converging position of the other laser beam is displaced to cancel the amount of deviation.

    摘要翻译: 公开了一种光头装置,其中具有不同波长的至少两个激光束通过使用一个物镜在记录介质或光盘上会聚为光点,并且对两个激光束中的一个进行聚焦控制,同时 使用另一激光束进行信号在光盘上的记录或再生。 当一个激光束经受聚焦控制时,由于多种光盘的透明基板之间的折射率差异,可能会发生另一激光束对于光盘的会聚位置的偏差。 在这种情况下,另一激光束的会聚位置被移位以抵消偏差量。

    Optical recording/reproducing apparatus with light beam deflection means
including wedge-shaped prism
    2.
    发明授权
    Optical recording/reproducing apparatus with light beam deflection means including wedge-shaped prism 失效
    具有光束偏转装置的光记录/再现装置包括楔形棱镜

    公开(公告)号:US5278813A

    公开(公告)日:1994-01-11

    申请号:US878974

    申请日:1992-05-06

    IPC分类号: G11B7/09 G11B7/135 G11B7/00

    CPC分类号: G11B7/1359 G11B7/094

    摘要: An optical recording/reproducing apparatus includes a plurality of semiconductor lasers, an objective lens for focusing light beams from the semiconductor lasers on an optical disk to form a plurality of light spots, and a correction unit for reducing an offset in a tracking signal occurring concomitantly with relative position correction for the light spots. The correction unit includes a rotary wedge-shaped prism disposed in an optical path through which a laser beam incident on the optical disk and a reflection laser beam from a light spot on the disk pass in opposite directions. The shape, refractive index and initial installation angle of the wedge-shaped prism are designed to have predetermined values that cancel the position shift of the laser beam on the objective lens surface occurring concomitantly with deflection of the laser beam.

    摘要翻译: 一种光学记录/再现装置,包括多个半导体激光器,用于将来自半导体激光器的光束聚焦在光盘上以形成多个光点的物镜,以及用于减少伴随发生的跟踪信号中的偏移的校正单元 对于光点进行相对位置校正。 校正单元包括设置在光路中的旋转楔形棱镜,通过该光路入射到光盘上的激光束和来自光盘上的光点的反射激光束通过相反方向。 楔形棱镜的形状,折射率和初始安装角度被设计成具有预定值,其消除与激光束的偏转同时发生的物镜表面上的激光束的位置偏移。

    Recording/reproducing optical head producing focusing error signal from
zero-th order diffracted light and tracking error signal from first
order diffracted light
    3.
    发明授权
    Recording/reproducing optical head producing focusing error signal from zero-th order diffracted light and tracking error signal from first order diffracted light 失效
    从零级衍射光产生聚焦误差信号的记录/再现光头和来自一级衍射光的跟踪误差信号

    公开(公告)号:US5404344A

    公开(公告)日:1995-04-04

    申请号:US154482

    申请日:1993-11-19

    CPC分类号: G11B7/09 G11B7/131 G11B7/1353

    摘要: A recording/reproducing optical head capable of causing a light spot on a photodetector for detecting a focusing error signal to stand still without being affected by variations in wavelength of light used, capable of adjusting a tracking error signal independently of the focusing error signal, and capable of utilizing light having an order of diffraction of -1 for the purpose of detecting a signal, in which a cylindrical lens for generating astigmatism and a diffraction grating made up of two regions different in the direction of diffraction or the angle of diffraction from each other are interposed between a beam splitter and a photodetector, a light beam diffracted from the diffraction grating and including the diffracted light of the zero-th order (that is, light which has passed through the diffraction grating without being deflected) is received by the photodetector, the diffracted light of the zero-th order is used for detecting a focusing error signal according to the astigmatism method, and diffracted light having an order of diffraction of +1 and diffracted light having an order of diffraction of -1 are used for detecting a tracking error signal.

    摘要翻译: 一种记录/再现光学头,其能够使光检测器上的光点用于检测聚焦误差信号静止而不受所用光波长的变化的影响,能够独立于聚焦误差信号调整跟踪误差信号;以及 能够利用衍射次数为-1的光来检测信号,其中用于产生像散的柱面透镜和衍射光栅由衍射方向不同的两个区域或每个衍射方向衍射的角度构成 另外设置在分束器和光电检测器之间,从衍射光栅衍射的光束并且包括零级的衍射光(即,已经通过衍射光栅而不被偏转的光)被 光电检测器,零级的衍射光用于根据散光检测聚焦误差信号 sm方法,衍射次数为+1的衍射光和衍射级数为-1的衍射光用于检测跟踪误差信号。

    Optical pickup for optical disk apparatus
    4.
    发明授权
    Optical pickup for optical disk apparatus 失效
    光盘装置用光拾取器

    公开(公告)号:US6125087A

    公开(公告)日:2000-09-26

    申请号:US965448

    申请日:1997-11-06

    摘要: Disclosed is an optical pickup and an optical disc device using the same, each including a laser diode, a photo-detector having a region divided into at least six photo-detection areas, and a diffraction grating disposed between the laser diode and the photo-detector and having a region divided into four areas by cross-shaped division lines. The diffraction grating divides a light beam reflected from an optical disc into four diffracted light beams. A focus error signal in accordance with a knife edge method and two kinds of tracking error signals in accordance with a push-pull method and a differential phase detection method are detected by irradiating the light beams diffracted at the areas of the diffraction grating on the detection areas of the photo-detector and/or at boundary lines therebetween, and arithmetically operating light intensity signals obtained from the detection areas of the photo-detector. As a result, there can be realized an optical pickup and an optical disc device, each of which can be matched with various optical discs different in structure by detecting a tracking error signal in accordance with the push-pull method and a tracking error signal suitable for a read only disc using only one photo-detector. Further, in the present invention, a holographic element can be used as the diffraction grating.

    摘要翻译: 公开了一种光拾取器和使用该光拾取器的光盘装置,每个光拾取器和光盘装置均包括激光二极管,具有被划分为至少六个光检测区域的区域的光检测器,以及设置在激光二极管和光电二极管之间的衍射光栅, 并且具有通过十字形划分线划分成四个区域的区域。 衍射光栅将从光盘反射的光束分成四个衍射光束。 通过将衍射光栅衍射的光束照射在检测器上来检测根据刀刃法的聚焦误差信号和根据推挽法和差分相位检测方法的两种跟踪误差信号 光检测器的区域和/或其间的边界线,以及从光检测器的检测区域获得的算术运算光强度信号。 结果,可以实现光拾取器和光盘装置,其中的每一个可以通过根据推挽方法检测跟踪误差信号和适合的跟踪误差信号而与结构不同的各种光盘匹配 对于仅使用一个光电检测器的只读光盘。 此外,在本发明中,可以使用全息元件作为衍射光栅。

    Liquid Crystal Display Device
    7.
    发明申请
    Liquid Crystal Display Device 有权
    液晶显示装置

    公开(公告)号:US20130194531A1

    公开(公告)日:2013-08-01

    申请号:US13792498

    申请日:2013-03-11

    IPC分类号: G02F1/1335

    摘要: A display device includes first and second substrates, first and second, red, green and blue color filters, disposed between the first and second substrates, and arranged in a first direction, a first light blocking film disposed between the first red and the green color filters, a second light blocking film disposed between the green and the blue color filters, and a third light blocking film disposed between the blue and the second red color filters, and signal lines, thin film transistors, and pixel electrodes formed on the first substrate. The first, second, and third light blocking films are overlapped with the signal lines. A width of a part of the second light blocking film disposed between the pixel electrodes in the first direction is larger than a width of a part of the first light blocking film disposed between the pixel electrodes in the first direction.

    摘要翻译: 显示装置包括第一和第二基板,第一和第二红色,绿色和蓝色滤色器,设置在第一和第二基板之间并且沿第一方向布置,第一遮光膜设置在第一红色和绿色之间 滤色器,设置在绿色和蓝色滤色器之间的第二遮光膜和设置在蓝色和第二红色滤色器之间的第三遮光膜,以及形成在第一基板上的信号线,薄膜晶体管和像素电极 。 第一,第二和第三遮光膜与信号线重叠。 设置在第一方向上的像素电极之间的第二遮光膜的一部分的宽度大于在第一方向上设置在像素电极之间的第一遮光膜的一部分的宽度。

    Liquid crystal display device having rectangular-shaped pixel electrodes overlapping with comb-shaped counter electrodes in plan view
    9.
    发明授权
    Liquid crystal display device having rectangular-shaped pixel electrodes overlapping with comb-shaped counter electrodes in plan view 有权
    液晶显示装置,在平面图中具有与梳状对置电极重叠的矩形像素电极

    公开(公告)号:US08134673B2

    公开(公告)日:2012-03-13

    申请号:US13067501

    申请日:2011-06-06

    IPC分类号: G02F1/1343

    摘要: The present invention realizes a bright image display by enhancing a numerical aperture of pixels. At least a portion of a pixel electrode is overlapped to a thin film transistor by way of a first insulation film, the pixel electrode is connected to an output electrode of the thin film transistor via a contact hole which is formed in the first insulation film, the counter electrode is arranged above the pixel electrode by way of a second insulation film in a state that the counter electrode is overlapped to the pixel electrode, the counter electrode is formed at a position avoiding the contact hole formed in the first insulation film as viewed in a plan view, and at least a portion of the counter electrode is overlapped to the thin film transistor.

    摘要翻译: 本发明通过增强像素的数值孔径来实现明亮的图像显示。 像素电极的至少一部分通过第一绝缘膜与薄膜晶体管重叠,像素电极通过形成在第一绝缘膜中的接触孔连接到薄膜晶体管的输出电极, 在对置电极与像素电极重叠的状态下,相对电极通过第二绝缘膜布置在像素电极的上方,相对电极形成在避免形成在第一绝缘膜中的接触孔的位置 在平面图中,并且相对电极的至少一部分与薄膜晶体管重叠。

    Liquid crystal display device
    10.
    发明授权
    Liquid crystal display device 有权
    液晶显示装置

    公开(公告)号:US07782426B2

    公开(公告)日:2010-08-24

    申请号:US12289183

    申请日:2008-10-22

    IPC分类号: G02F1/1343 G02F1/1335

    CPC分类号: G02F1/134363 G02F2201/40

    摘要: The present invention realizes an IPS liquid crystal display device which exhibits small directivity of viewing angle and high brightness. Below a pixel electrode having a comb-teeth-shaped electrode and having a laterally-extending trapezoidal profile, a planar common electrode not shown in the drawing is formed by way of an insulation film. When a video signal is applied to the pixel electrode, an electric field is generated between the pixel electrode and the common electrode via slit portions formed in the pixel electrode thus controlling liquid crystal molecules. The pixel electrodes are arranged in a packed state by alternately reversing the direction of the trapezoidal shape in the longitudinal direction. Since a light blocking film is not present between two pixel electrodes arranged adjacent to each other in the longitudinal direction, the liquid crystal display device can acquire high transmissivity. As a result, a liquid crystal display device having high brightness can be realized.

    摘要翻译: 本发明实现了一种IPS液晶显示装置,它具有较小的视角方向性和高亮度。 在具有梳齿状电极且具有横向延伸的梯形轮廓的像素电极下方,通过绝缘膜形成图中未示出的平面公共电极。 当将视频信号施加到像素电极时,通过形成在像素电极中的狭缝部分,在像素电极和公共电极之间产生电场,从而控制液晶分子。 像素电极通过在纵向上交替地反转梯形形状的方向而被布置成压缩状态。 由于在长度方向上彼此相邻布置的两个像素电极之间不存在遮光膜,所以液晶显示装置可以获得高的透射率。 结果,可以实现具有高亮度的液晶显示装置。