Method of producing a phase device based on a twisted liquid crystal having optimized structure operating under unpolarized light

    公开(公告)号:US09612480B2

    公开(公告)日:2017-04-04

    申请号:US14239252

    申请日:2012-07-19

    Abstract: The invention relates to a method of producing a phase device operating at at least one wavelength (λ) comprising a cell containing a liquid crystal possessing a helical structure, inserted between two alignment layers possessing rubbing axes and means for applying a voltage to said cell, said helical structure exhibits a number of helical turns k, said liquid crystal exhibiting a defined angle of twist Θ between the rubbing axes of the two alignment layers, characterized in that it comprises the following steps: —the determination of a compensation angle ε satisfying the following equation: (formula) with: N the integer closest to (formula) the angle of twist Θ=2Kπ−εΔn: the birefringence of the liquid crystal; d: the thickness of the liquid crystal cell; λ: the wavelength of the light beam which passes through the liquid crystal cell; the rubbing of one of the faces in a direction of alignment of said liquid crystal molecules, defining the angle of twist: θ=2Kπ−ε. ɛ = 2 ⁢ k ⁢ ⁢ π - N ⁢ ⁢ π ⁢ 1 - d 2 ⁢ Δ ⁢ ⁢ n 2 N 2 ⁢ λ 2 ) 2 ⁢ k ⁢ ( 1 + d 2 ⁢ Δ ⁢ ⁢ n 2 4 ⁢ k 2 ⁢ λ 2 )

    Augmented reality display device
    2.
    发明授权
    Augmented reality display device 有权
    增强现实显示设备

    公开(公告)号:US09595138B2

    公开(公告)日:2017-03-14

    申请号:US14290095

    申请日:2014-05-29

    Inventor: Umberto Rossini

    Abstract: An HMD-type device for displaying an image in augmented reality, comprising: an assembly of light display pixels arranged on a first surface of a transparent support intended to be positioned on the optical path between a user's eye and a real scene to be observed, this assembly comprising a number N greater than 1 of pixel sub-assemblies, each comprising a sufficient number of pixels to display the entire image; and an optical system arranged on a second surface of the support opposite to the first surface, this system comprising N optical sub-systems, each pixel sub-assembly facing one of the optical sub-systems.

    Abstract translation: 一种用于在增强现实中显示图像的HMD型装置,包括:布置在透明支架的第一表面上的光显示像素的组件,其旨在位于用户的眼睛和待观察的真实场景之间的光路上, 该组件包括N个大于1个像素子组件,每个包括足够数量的像素以显示整个图像; 以及布置在与第一表面相对的支撑件的第二表面上的光学系统,该系统包括N个光学子系统,每个像素子组件面对光学子系统之一。

    Method for Writing an Image in a Liquid Crystal Display
    3.
    发明申请
    Method for Writing an Image in a Liquid Crystal Display 审中-公开
    在液晶显示器中写入图像的方法

    公开(公告)号:US20120287179A1

    公开(公告)日:2012-11-15

    申请号:US13522691

    申请日:2011-01-21

    Inventor: Umberto Rossini

    Abstract: A method of display on a color sequential liquid crystal screen, notably an LCOS technology screen (integrated circuit screen), is provided. The liquid crystal between a pixel electrode and counter-electrode common to all pixels, and provision is made to alternate the potential of the counter-electrode at each frame. Writing an image comprises successive addressing of various rows and simultaneous application of a voltage level to column conductors. The writing phase is followed, before the end of a frame, by a phase of switching counter-electrode potential wherein the transistors of the various rows are successively turned on for durations which overlap mutually such that all transistors are simultaneously on at a given moment of this switching phase, and the potential of the counter-electrode is switched at this moment. Overvoltages are thus avoided on the control transistors at the level of the pixel at the moment of the switching of counter-electrode potential.

    Abstract translation: 提供了一种在彩色顺序液晶屏幕上显示的方法,特别是LCOS技术屏幕(集成电路屏幕))。 在所有像素共同的像素电极和对置电极之间的液晶,并且提供在每个帧处交替对置电极的电位。 写入图像包括各行的连续寻址以及同时向列导体施加电压电平。 在帧的结束之前,通过开关对电极电位的相位来跟随写入阶段,其中各行的晶体管被​​连续地导通,相互重叠的持续时间使得所有晶体管在给定时刻同时导通 此时切换相位和对置电极的电位切换。 因此,在对置电位切换时刻的像素级别的控制晶体管上避免了过电压。

    Method for manufacturing an opto-microelectronic device
    5.
    发明授权
    Method for manufacturing an opto-microelectronic device 有权
    光电子器件制造方法

    公开(公告)号:US08993368B2

    公开(公告)日:2015-03-31

    申请号:US14111458

    申请日:2012-04-11

    Inventor: Umberto Rossini

    Abstract: Method for manufacturing a microelectronic device from a first substrate (10), including the production of at least one electronic component in the semi-conductor substrate after transferring the first substrate (10) onto a second substrate (20), characterized in that it comprises: a first phase carried out prior to the transfer, and including forming at least one pattern made of a sacrificial material in a layer of the first substrate (10), a second phase carried out after the transfer and including the substitution of the electronic component for the pattern.

    Abstract translation: 一种从第一基板(10)制造微电子器件的方法,包括在将第一基板(10)转移到第二基板(20)上之后,在半导体基板中生产至少一个电子部件,其特征在于,其包括 :在转移之前执行的第一阶段,并且包括在第一衬底(10)的层中形成由牺牲材料制成的至少一个图案,在转移之后执行的第二阶段,并且包括电子部件 为模式。

    METHOD OF PRODUCING A PHASE DEVICE BASED ON A TWISTED LIQUID CRYSTAL HAVING OPTIMIZED STRUCTURE OPERATING UNDER UNPOLARIZED LIGHT
    6.
    发明申请
    METHOD OF PRODUCING A PHASE DEVICE BASED ON A TWISTED LIQUID CRYSTAL HAVING OPTIMIZED STRUCTURE OPERATING UNDER UNPOLARIZED LIGHT 有权
    基于具有优化结构的双层液晶生产相位装置的方法

    公开(公告)号:US20140218672A1

    公开(公告)日:2014-08-07

    申请号:US14239252

    申请日:2012-07-19

    Abstract: The invention relates to a method of producing a phase device operating at at least one wavelength (λ) comprising a cell containing a liquid crystal possessing a helical structure, inserted between two alignment layers possessing rubbing axes and means for applying a voltage to said cell, said helical structure exhibits a number of helical turns k, said liquid crystal exhibiting a defined angle of twist Θ between the rubbing axes of the two alignment layers, characterized in that it comprises the following steps: —the determination of a compensation angle ∈ satisfying the following equation: (formula) with: N the integer closest to (formula) the angle of twist Θ=2Kπ−∈ Δn: the birefringence of the liquid crystal; d: the thickness of the liquid crystal cell; λ: the wavelength of the light beam which passes through the liquid crystal cell; the rubbing of one of the faces in a direction of alignment of said liquid crystal molecules, defining the angle of twist: θ=2Kπ−∈. ɛ = 2  k   π - N   π  1 - d 2  Δ   n 2 N 2  λ 2 ) 2  k  ( 1 + d 2  Δ   n 2 4  k 2  λ 2 )

    Abstract translation: 本发明涉及一种制造在至少一个波长(λ)下工作的相位装置的方法,所述相位装置包括插入在具有摩擦轴的两个对准层之间的含有具有螺旋结构的液晶的单元,以及用于向所述单元施加电压的装置, 所述螺旋结构呈现多个螺旋圈k,所述液晶在两个取向层的摩擦轴之间具有确定的扭转角度θ,其特征在于,其包括以下步骤: - 确定补偿角∈满足 以下等式:(公式)与:N是最接近(公式)的整数扭转角Θ= 2K&pgr;-ε&Dgr; n:液晶的双折射; d:液晶盒的厚度; λ:通过液晶单元的光束的波长; 限定扭转角度的所述液晶分子的取向方向中的一个面的摩擦:& 2K&pgr;-ε。 ɛ= 2 k; - ; 1 - d 2&Dgr; 2 n 22λ2)2 k 2(1 + d 2&Dgr; n n 2 4 k2λ2)

    Phase modulator containing a liquid crystal having a helical structure
    7.
    发明授权
    Phase modulator containing a liquid crystal having a helical structure 有权
    含有具有螺旋结构的液晶的相位调制器

    公开(公告)号:US08797497B2

    公开(公告)日:2014-08-05

    申请号:US13581461

    申请日:2011-03-07

    Abstract: An unpolarized light beam phase modulator emitting in a given wavelength range comprises at least one cell containing a liquid crystal having a helical structure and means for applying a voltage to said cell, said liquid crystal having a torsion elastic constant greater than its twisting elastic constant so as to ensure continuous stable behavior voltage-wise, said liquid crystal having a sufficient number of turns and in which the axis of the turns is in the light-propagation direction, making it possible to obtain an optical effect generated by the liquid crystal on the electrical field that is identical regardless of the direction of this electrical field, said cell being transparent in said wavelength range.

    Abstract translation: 在给定波长范围内发射的非偏振光束相位调制器包括至少一个包含具有螺旋结构的液晶的单元和用于向所述单元施加电压的装置,所述液晶具有大于其扭转弹性常数的扭转弹性常数,所以 为了确保电压连续的稳定行为,所述液晶具有足够的匝数,并且匝的轴在光传播方向上,使得可以获得由液晶产生的光学效应 不管该电场的方向如何,电场都是相同的,所述电池在所述波长范围内是透明的。

    LIQUID CRYSTAL DISPLAY COMPRISING ERASE ELECTRODES
    8.
    发明申请
    LIQUID CRYSTAL DISPLAY COMPRISING ERASE ELECTRODES 有权
    包含消除电极的液晶显示器

    公开(公告)号:US20140132644A1

    公开(公告)日:2014-05-15

    申请号:US14127938

    申请日:2012-03-11

    Inventor: Umberto Rossini

    Abstract: Active matrix liquid crystal displays, mainly applicable to screens with small dimensions, fabricated for example starting from silicon substrates, are especially applicable to display operation in color sequential mode. The pixel comprises a pixel electrode controlled by a control transistor and counter-electrodes situated on the same side of the liquid crystal as the pixel electrode and parallel to the pixel electrode; the liquid crystal is composed of molecules having a natural rest orientation in the absence of a voltage between the pixel electrode and the counter-electrodes and a different orientation in the presence of an electric field created between the pixel electrode and the counter-electrodes. Erase electrodes are situated on either side of the pixel in a transverse direction with respect to the counter-electrodes and are designed to produce, during an erase phase, an erase electric field tending to return the molecules of the liquid crystal to their rest orientation.

    Abstract translation: 主要适用于从硅衬底开始制造的小尺寸屏幕的有源矩阵液晶显示器尤其适用于彩色顺序模式下的显示操作。 像素包括由控制晶体管控制的像素电极和位于与像素电极在液晶的同一侧并平行于像素电极的对电极; 在像素电极和对置电极之间不存在电压的情况下,液晶由具有自然静止取向的分子组成,并且在存在像素电极和对置电极之间产生的电场的情况下,具有不同的取向。 擦除电极位于相对于对电极的横向方向的像素的任一侧上,并且被设计为在擦除阶段期间产生倾向于将液晶分子返回到其静止取向的擦除电场。

    MULTILAYER STRUCTURE HAVING A PHOTOCHROMIC HOST MATRIX AND MANUFACTURING METHOD
    9.
    发明申请
    MULTILAYER STRUCTURE HAVING A PHOTOCHROMIC HOST MATRIX AND MANUFACTURING METHOD 有权
    具有光电主体矩阵和制造方法的多层结构

    公开(公告)号:US20110116151A1

    公开(公告)日:2011-05-19

    申请号:US13003425

    申请日:2009-07-10

    CPC classification number: G02B5/23 G02C7/102 G02C2202/16

    Abstract: A photochromic structure includes a plastic support of optical grade with good light transparency, having at least one face with an adhesive layer impregnated with a solution of a solvent with photochromes, having a flexible host matrix for the photochromes, which is mounted by adhesion onto another support. A structure with a uniform flexible photochromic matrix, which has rapid transition times, notably a rapid relaxation time, is thus obtained. The structure is mountable, and advantageously repositionable. It is produced via a process using roll-milling combined with a system for dispensing the solvated solution of photochromes upstream of the rolls, via which a support strip of an adhesive is entrained by the rolls, and the adhesive is gradually impregnated and then laminated on another support.

    Abstract translation: 光致变色结构包括具有良好光透明度的光学级的塑料支撑体,具有至少一个表面,其中粘合剂层浸渍有溶剂与光致变色剂的溶液,其具有用于光致变色的柔性主体基质,其通过粘附安装在另一个上 支持。 因此获得了具有均匀柔性光致变色基质的结构,其具有快速的转变时间,特别是快速的弛豫时间。 该结构可安装,并且有利地可重新定位。 它是通过使用辊铣加工的方法生产的,该系统用于分配辊上游的光致变色剂的溶剂化溶液,粘合剂的支持条通过该辊粘附到辊上,并且将粘合剂逐渐浸渍,然后层压在 另一个支持。

    Compactly built electron tube and fabrication method thereof
    10.
    发明授权
    Compactly built electron tube and fabrication method thereof 失效
    紧凑的电子管及其制造方法

    公开(公告)号:US5017827A

    公开(公告)日:1991-05-21

    申请号:US425000

    申请日:1989-10-23

    CPC classification number: H01J29/82 H01J29/861

    Abstract: The disclosure concerns electron tubes. A tube such as a cathode-ray tube consists of several parts, namely the stem, the neck, the cone and the screen of the front face. To build a tube such as this more compactly while, at the same time, improving the quality of the fabrication, a new construction of the neck is proposed. In the prior art, the neck is a glass tube to which there is soldered a glass stem through which pass the connection terminals towards the various electrodes, internal to the tube. Here, the neck is built in the form of a stack of alternating metallic rings and ceramic rings. The metallic rings are used for the supporting of and electrical connection to the internal electrodes. The ceramic rings are used to insulate the metallic rings. The brazings between metallic rings and ceramic rings provide for vacuum tightness. The base of the tube is a ceramic washer without drillings other than lateral ones for the connections to pass through. The connections are made chiefly around the neck on the metallic rings.

    Abstract translation: 本公开涉及电子管。 诸如阴极射线管的管由几个部分组成,即前表面的杆,颈部,锥体和屏幕。 为了更紧凑地构建这样的管,同时提高制造质量,提出了一种新的颈部结构。 在现有技术中,颈部是玻璃管,焊接有玻璃杆,通过该玻璃管将连接端子通向管内部的各种电极。 这里,颈部是以一叠交替的金属环和陶瓷环的形式构成的。 金属环用于支撑和电连接到内部电极。 陶瓷环用于绝缘金属环。 金属环和陶瓷环之间的钎焊提供真空密封性。 管的底部是没有钻孔的陶瓷垫圈,而不是用于连接通过的横向的钻孔。 连接主要在金属环上的颈部周围。

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