Abstract:
An optical waveguide device has an optical waveguide substrate and a supporting body for supporting the substrate. The substrate has a main body made of an electro-optic material and having a main face and an opposing face, optical waveguides, and electrodes for applying an electrical signal on the optical waveguides. At least a part of the opposing face of the supporting body opposing the substrate is covered with a conductive layer. It is thus possible to reduce the resonance due to substrate radiation leakage of the microwave signal into the whole of the optical waveguide substrate and supporting body.
Abstract:
An improved electro-optic moduator device is disclosed which provides strain-free mounting of an electro-optic crystal within a housing assembly and suppression of acousto-optic effects within the crystal. An acoustic matching liquid having an acoustic impedance substantially matching the acoustic impedance of the electro-optic crystal is disposed within the housing enveloping longitudinally the crystal. The acoustic matching liquid effectively suppresses the acousto-optic resonances within the crystal by coupling the acoustic energy out of the crystal into the liquid. The liquid enveloping the crystal also provides a uniform heat conduction path for minimizing thermal gradient variations and the resulting thermally induced strain within the crystal. A zinc oxide suspension in silicone oil is an exemplary acoustic matching liquid for gallium arsenide or cadmium telluride crystals. In one embodiment the acoustic matching liquid has a consistency of a slurry capable of being recirculated through the housing to improve the heat transfer characteristics of the liquid. In a further embodiment an acoustic absorber, disposed in a spaced apart relationship about the crystal, is adapted for absorbing acoustic energy transmitted through the liquid. An elastomeric seal at each end of the crystal provides a liquid-tight seal between the housing and the crystal to maintain the liquid within the housing and provides a soft-mounting structure to minimize thermally and mechanically induced strain within the crystal.
Abstract:
A holding mechanism for a display device has a front cover member attached to a surface of a housing containing the display device so as to cover the display device, and an elastic member arranged between the display device and a front cover member. A thin plate-like member having shape retention is attached to the elastic member on a side facing the front cover member, and the elastic member attached to the thin plate-like member is attached to an internal side of the front cover member to prevent an unsightly appearance and to make the adherence of the elastic member to the surface of the display device easier.
Abstract:
In a holding mechanism for a display device 12, which has a front cover member 14 attached to a surface of a housing 13 containing the display device 12 so as to cover the display device 12 and an elastic member 15 arranged between the display device 12 and a front cover member 14, a thin plate-like member 21 having shape retention is attached to the elastic member 15 on a side facing the front cover member 14, and the elastic member 15 attached to the thin plate-like member 21 is attached to an internal side of the front cover member 14, in order to prevent an unsightly appearance and to make the adhering of the elastic member 15 to the surface of the display device easier.
Abstract:
The present invention discloses a liquid crystal display (LCD) device. A LCD device comprises a LCD panel and a frame for fixing the LCD panel, wherein the matching holes and protruding modules are respectively arranged on the contact surfaces of the frame and the LCD panel; and the frame and the LCD panel are fixed by a way of embedding the protruding modules in the holes. The present invention can keep the LCD panel in place to prevent the LCD panel from moving laterally under the conditions of vibration etc. by providing the protruding modules and the holes for the contact surfaces of the LCD panel and the frame, and using the lateral limitation by embedding the protruding modules in the holes. Therefore, even as in the presence of narrow frame, the LCD panel is prevented from damages due to disconnection from the front frame. Thus, the positioning capability of the LCD panel is greatly improved.
Abstract:
A liquid crystal display device is provided with: a liquid crystal panel capable of displaying an image; a backlight unit including cold cathode tubes and a chassis housing the cold cathode tubes and supplying light to the liquid crystal panel; and a second exterior member housing the liquid crystal panel and the backlight unit and including a bottom portion facing the chassis. On a surface of the chassis facing the bottom portion, a plurality of fixing members capable of fixing the bottom portion is provided. The fixing members include inverter covers disposed with a gap from the bottom portion, and reinforcing members abutting on the bottom portion. Between the inverter covers and the bottom portion, spacers with the function of damping vibration are interposed.
Abstract:
An optical waveguide device 1A has an optical waveguide substrate 15A and a supporting body 8 for supporting the substrate 15A. The substrate 15A has a main body 2 made of an electrooptic material and having a main face 2a and an opposing face 2b, optical waveguides 4A, 4B, and electrodes 3A, 3B, 3C for applying an electrical signal on the optical waveguides. At least a part of the opposing face 8a of the supporting body 8 opposing the substrate 15A is covered with a conductive layer 7A. It is thus possible to reduce the resonance due to substrate radiation of microwave into the whole of the optical waveguide substrate and supporting body.
Abstract:
An improved electro-optic modulator having reduced amplitude of acoustic resonances is provided. Acoustic energy is efficiently removed from the electro-optic crystal and channeled into electrode and side dielectric bars where it is dissipated by materials acoustically matched to the electro-optic crystal, that is, materials that have acoustic impedances within .+-.15% of that of the electro-optic material.
Abstract:
Acoustical ringing which results from piezoelectric effects in an electro-optical modulator is suppressed by mounting the modulator crystal between massive, acoustically absorbent, support members which also provide an electric circuit interface for applying electric signals to the modulator. Solder provides such an absorbent mounting for a lithium tantalate electrooptical modulator crystal. Both solder support members are applied during the same heating interval and permitted to cool simultaneously. In one embodiment the solder application is accomplished in a first step wherein mounds of solder are applied adjacent to the crystal at a first temperature and in a second step wherein additional solder is applied at a lower temperature between the crystal and the solder mounds.
Abstract:
A display apparatus and a computing apparatus including the same are provided. A display apparatus includes: a display module including a display panel configured to display an image, a system rear cover covering a rear surface of the display module, a vibration plate between the system rear cover and the rear surface of the display module, and a vibration module configured to vibrate the vibration plate, wherein the display panel is further configured to vibrate based on a vibration of the vibration plate to output sound.