摘要:
We describe methods and devices for manipulating optical signals. A method of manipulating an optical signal comprises providing a device (100) comprising a layer (106) of blue phase liquid crystal in the path of the optical signal; and applying a dynamically varying spatial pattern of voltages across the layer (106) of blue phase liquid crystal, thereby causing the refractive index of the layer (106) of blue phase liquid crystal to vary according the dynamically varying spatial pattern.
摘要:
Embodiments of the present invention provide a fringe-field-switching mode liquid crystal display panel. The liquid crystal display panel comprises: a first substrate and a second substrate facing each other, and a liquid crystal layer sandwiched between the first substrate and the second substrate; a first lower electrode, a first insulating layer and a first upper electrode, which are formed sequentially on a surface of the first substrate facing the second substrate; and a second lower electrode, a second insulating layer and a second upper electrode, which are formed sequentially on a surface of the second substrate facing the first substrate.
摘要:
A liquid crystal display includes: a pair of substrates (601, 701) including at least one transparent substrate; a liquid crystal layer (LC) disposed between the pair of substrates (601, 701); and an electrode group formed on at least one of the pair of substrates (601, 701) so as to apply an electric field to the liquid crystal layer (LC). The liquid crystal layer (LC) contains at least one kind of liquid crystalline compound and at least one kind of chiral dopant. The concentration c of the chiral dopant is lower than a saturation solubility s thereof. The concentration c of the chiral dopant and a helical twisting power [HTP] of the chiral dopant satisfy a relation of [HTP] ·c≥5.5 (µm -1 ).
摘要:
[PROBLEMS] To provide a liquid crystal display device that does not need any surface aligning treatment, realizes striking increase of a response speed of movie display and is free from any light leakage (produce dark field) at black display. [MEANS FOR SOLVING PROBLEMS] There is provided a liquid crystal display device comprising a pair of transparent substrates and, interposed therebetween, a polymer stabilized blue-phase liquid crystal. The liquid crystal display device utilizing the polymer stabilized blue-phase liquid crystal exhibits a large birefringence change upon application of an electric field to cell substrate in an in-plane direction. The polymer stabilized blue-phase liquid crystal is composed of a low-molecular liquid crystal capable of developing a blue phase between cholesteric phase and isotropic phase and a polymer network created in the low-molecular liquid crystal. Further, by optimizing the type and amount of chiral dopant added to the liquid crystal, there can be provided a liquid crystal display device that is free from any light leakage (produce dark field) at black display.
摘要:
An optical element able to realize a response equal to or faster than that of a conventional one without depending on an incident polarization. The optical element comprises transparent substrates (5, 6), a lattice (2A) formed on the transparent substrate (5) by using an isotropic-refractive-index solid material and having a sectional structure of a cyclic unevenness, blue-phase liquid crystals (2B) filled in the recesses of the lattice (2A) having cyclic unevenness and having refractive index thereof changed isotropically, and transparent electrodes (3, 4) for applying a voltage to the blue-phase liquid crystals (2B), wherein a diffraction element (10) is formed by diffraction lattices (1) each consisting of a lattice (2A) and a blue-phase liquid crystal (2B), and the refractive index of the blue-phase liquid crystals (2B) constituting the diffraction element (10) is changed by a voltage applied via the transparent electrodes (3, 4).
摘要:
Disclosed is a blue-phase liquid crystal panel, comprising a first substrate (12), a second substrate (22), a blue-phase liquid crystal layer (10) between the first substrate (12) and the second substrate (22); a first electrode (11) located on one surface of the first substrate (12), a first substrate coupling film (14) located on another surface of the first substrate (12); a second electrode (21) located on one surface of the second substrate (22); the first electrode (11) and the second electrode (21) forming a vertical electric field; the first substrate coupling film (14) converting the direct front light (151) of the backlight module (15) into slant front light (152) having a predetermined angle with the perpendicular electric field direction. By generating a vertical electric field, the liquid crystal panel enhances the electric field strength and uniformity of the blue-phase liquid crystal layer (10), and by changing the angle of light of the backlight source entering the liquid crystal cell, subjecting the incident light to phase retard, thus lowering the operating voltages of the blue-phase liquid crystal panel.
摘要:
Disclosed are a transflective liquid crystal display device and a driving method thereof. The transflective liquid crystal display device includes: a first surface electrode (103), a first pixel electrode (107), a second surface electrode (113) and a second pixel electrode (112) located in transmissive regions (A); the first surface electrode (103) and first pixel electrode (107) are located between a first substrate (102) and a liquid crystal layer (110), the second surface electrodes (113) and the second pixel electrodes (112) are located between a second substrate (104) and the liquid crystal layer (110). The device further includes: a third surface electrode (104), a reflection layer (105) and a third pixel electrode (108) located in reflective regions (B); the third surface electrode (104), the reflection layer (105) and the third pixel electrode (108) are located between the first substrate (102) and the liquid crystal layer (110). The liquid crystal layer (110) in both the transmissive region (A) and the reflective region (B) of the display device have an equal thickness, thereby drastically reducing the process difficulty of the device while guaranteeing the same phase retardations in both transmissive region and reflective region.
摘要:
Disclosed is a blue-phase liquid crystal panel, comprising a first substrate (12), a second substrate (22), a blue-phase liquid crystal layer (10) between the first substrate (12) and the second substrate (22); a first electrode (11) located on one surface of the first substrate (12), a first substrate coupling film (14) located on another surface of the first substrate (12); a second electrode (21) located on one surface of the second substrate (22); the first electrode (11) and the second electrode (21) forming a vertical electric field; the first substrate coupling film (14) converting the direct front light (151) of the backlight module (15) into slant front light (152) having a predetermined angle with the perpendicular electric field direction. By generating a vertical electric field, the liquid crystal panel enhances the electric field strength and uniformity of the blue-phase liquid crystal layer (10), and by changing the angle of light of the backlight source entering the liquid crystal cell, subjecting the incident light to phase retard, thus lowering the operating voltages of the blue-phase liquid crystal panel.
摘要:
The invention provides a switchable lens element comprising an inverse lens structure formed by an isotropic material and an isotropic cover sheet wherein the resulting lens structure comprises an electrically switchable polymer stabilized blue phase LC medium having the same refractive index in its isotropic state. Furthermore, the present invention relates to the use of such a lens element in an electro-optical device i.e. an autostereoscopic display device operable in a 2D mode or a 3D mode, in which a lens arrangement directs the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed and wherein the lens arrangement comprises a plurality of said switchable lens elements.