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.
Abstract:
An optical modulator includes an optical modulation element that is accommodated in a housing. A plurality of lead pins, which are electrically connected to the optical modulation element through wire bonding, are fixed to a lateral wall of the housing. Each of the plurality of lead pins includes a portion that protrudes into an inner space (inner surface side) of the housing. A resonance suppressing structure (for example, a concave portion), which is configured to suppress resonance between the lead pins, is provided in a lateral wall portion to which the plurality of lead pins are fixed.
Abstract:
Provided is a liquid crystal display panel, comprising an array substrate, a color filter substrate, and a liquid crystal layer disposed therebetween, wherein a photoelectric functional layer, which is arranged on a surface of the color filter substrate facing the liquid crystal layer or on a surface of the color filter substrate away from the liquid crystal layer, can influence polarization states of optical waves, and meanwhile generate electrical shielding effects. As such, the photoelectric functional layer, which has two functions, can serve as either a polarizer or an electrical shielding layer, thus simplifying a manufacturing procedure of the entire liquid crystal display panel.
Abstract:
An LCD device includes a panel module and a back light module. The back light module includes a light guide plate having a light incident surface; a bezel for receiving the light guide plate, including a bottom plate and side walls surrounding the bottom plate; a reflective sheet disposed between the light guide plate and the bottom plate of the bezel; at least one lighting unit disposed in a position corresponding to the light incident surface; and a fixing unit including at least two fixing members, each fixing member has a base position and a bent portion vertically extending from at least one end of the base position. The top surface and the inner surface of the base position are closely attached to the light guide plate and the outer surface of the bent portion opposite to the inner surface thereof is closely attached to the side wall.
Abstract:
A backlight unit includes a discharge tube, a backlight chassis and a reinforcing member. The backlight chassis includes a bottom plate and side plates that rise from a surface of the bottom plate at the respective edges of the bottom plate. The backlight chassis houses the discharge tube that is arranged on the first surface of the bottom plate. The reinforcing member includes fixing portions that is fixed to the respective side plates and a reinforcing portion that is in contact with a rear surface of the bottom plate of the backlight chassis and connected to the fixing portions.
Abstract:
An apparatus and method for suppressing false resonances in fiber optic modulators forms cavities in the modulator housing and fills the cavities with a flowable composition that includes iron.
Abstract:
There is provided by this invention an electro-optic modulator for damping acoustical energy produced by an electro-optic crystal. The modulator couples acoustic energy from the electro-optic crystal to an acoustic coupler due to the matching acoustic impedances of the coupler and the crystal. The coupler transmits the acoustic wave to the acoustic damper which dampens the acoustic energy. The coupler linearly decreases in height in a direction away from the crystal so that the acoustic wave is reflected through more than one damper prior to returning to the crystal, thus further decreasing acoustical energy. Another feature of this invention is the geometrical design of the electro-optic crystal which has two of its faces, which are not attached to a coupler, positioned not to be perpendicular with a face attached to a coupler. This design of the crystal allows for all acoustic waves, even if directed toward a face which does not have an attached coupler, to be reflected toward a face having an attached coupler so that they can be coupled from the cavity and damped. A further feature of this invention is the use of material from the damper in the bonding material between the coupler and the damper so that a gradient interface is formed so that more efficient transmission to and from the damper is obtained.