508results about How to "Reduce the amount of variation" patented technology

In a display device including a backlight and a display panel, the area of the backlight is divided into a plurality of unit regions; the display panel includes pixels which are larger in number than the unit regions; a frame rate of image data input to the device is converted to perform display while part of the unit regions in which black is displayed is in a non-light emission state; and the driving frequency of the backlight is converted in accordance with the display.

As a display device has higher definition, the number of pixels is increased and thus, the number of gate lines and signal lines is increased. When the number of gate lines and signal lines is increased, it is difficult to mount IC chips including driver circuits for driving the gate lines and the signal lines by bonding or the like, whereby manufacturing cost is increased. A pixel portion and a driver circuit for driving the pixel portion are provided on the same substrate, and at least part of the driver circuit comprises a thin film transistor including an oxide semiconductor sandwiched between gate electrodes. A channel protective layer is provided between the oxide semiconductor and a gate electrode provided over the oxide semiconductor. The pixel portion and the driver circuit are provided on the same substrate, which leads to reduction of manufacturing cost.

A semiconductor device which includes an oxide semiconductor and in which formation of a parasitic channel due to a gate BT stress is suppressed is provided. Further, a semiconductor device including a transistor having excellent electrical characteristics is provided. The semiconductor device includes a transistor having a dual-gate structure in which an oxide semiconductor film is provided between a first gate electrode and a second gate electrode; gate insulating films are provided between the oxide semiconductor film and the first gate electrode and between the oxide semiconductor film and the second gate electrode; and in the channel width direction of the transistor, the first or second gate electrode faces a side surface of the oxide semiconductor film with the gate insulating film between the oxide semiconductor film and the first or second gate electrode.

The application discloses a pixel circuit based on a double-gate transistor and a drive method thereof. In one embodiment, the pixel circuit comprises a light-emitting device OLED, a drive transistor T1, switch transistors T2-T5, a capacitor C1 and a capacitor C2; and the drive transistor T1 is a double-gate transistor and is used to drive the light-emitting device OLED to emit light. For the drive transistor in the pixel circuit of the application, the double-gate transistor is used to replace a single-gate transistor as a drive transistor in a traditional technology, a bottom gate of the double-gate transistor is used as the main gate, and then a top gate source voltage is used to adjust a threshold voltage of the drive transistor; and, because stability of a double-gate a-IGZO TFT is higher than stability of a single-gate device, the double-gate a-IGZO TFT can achieve threshold extraction and compensation and can achieve good display uniformity at the same time.

The present invention relates to back light unit light guide plate composing picture on surface in laser picture composition mode, the picture composition mode can control the picture composition curved deep profile line. The invention concretely relates to a light guide plate of picture formed with the picture composition mode, according to the picture composition mode, deepness of the picture varies with distance to the light source when composing picture on the light guide plate, such that the reflection of light of light-in section is minimized in range of standard value, therefore the light source is transmitted to the back light section with minimized loss.

A supply part for supplying resin, a smoothing part for smoothing the resin, and an objective lens for exposing the smoothed resin to light are provided in separate positions within substantially the same horizontal plane, and a modeling part is movable by a horizontal drive mechanism under the three above-mentioned components. For processing in the three above-mentioned components, the modeling part is moved to positions immediately under the three above-mentioned components in order by the horizontal drive mechanism. Thus, the modeling part is brought as close to the three above-mentioned components as possible for processing. The exposure is performed, with the objective lens fixed to a base body. Exposure light is focused onto a resin layer on a modeling base, and the light reflected from the resin layer is received by the objective lens, directed by a beam splitter toward an image surface optical system and received as an image by a CCD camera. During the exposure, the directed exposure light serves as illumination light which enables an operator to check whether current focus is achieved on the surface of the resin layer. During a time interval between the completion of the exposure of the resin layer to light and the execution of the exposure of the next resin layer to light, the fine adjustment of the vertical position of a stage is made, whereby the fine adjustment of the focus position is made in accordance with the result of observation using a monitor. This prevents the decrease in modeling accuracy for the subsequent resin layers, thereby to hold the modeling accuracy for the entire model higher, thereby improving the yield and productivity of models. These provide a stereolithography apparatus which attains a resin layer thickness of 10 μm and an exposure resolution of 2 μm and is preferred for micromachining.

A method for manufacturing a memory device, and a resulting device, is described using silicon oxide doped chalcogenide material. A first electrode having a contact surface; a body of phase change memory material in a polycrystalline state including a portion in contact with the contact surface of the first electrode, and a second electrode in contact with the body of phase change material are formed. The process includes melting and cooling the phase change memory material one or more times within an active region in the body of phase change material without disturbing the polycrystalline state outside the active region. A mesh of silicon oxide in the active region with at least one domain of chalcogenide material results. Also, the grain size of the phase change material in the polycrystalline state outside the active region is small, resulting in a more uniform structure.

The present invention is a method for manufacturing a negative electrode active material for a non-aqueous electrolyte secondary battery comprising at least depositing silicon on a substrate by vapor deposition by using a metallic silicon as a raw material, the substrate having a temperature controlled to 300° C. to 800° C. under reduced pressure, and pulverizing and classifying the deposited silicon. As a result, there is provided a method for manufacturing a negative electrode active material composed of silicon particles that is an active material useful as a negative electrode of a non-aqueous electrolyte secondary battery in which high initial efficiency and high battery capacity of silicon are kept, cycle performance is superior, and an amount of a change in volume decreases at the time of charge and discharge.

An optical scanning device includes a plurality of scanning optical systems configured to scan different scanning surfaces. Each of the scanning optical systems includes a light source configured to emit a light flux, a deflector configured to scan the light flux emitted from the light source, wherein the deflector is commonly used in the plurality of scanning optical systems. Each of the scanning optical systems further includes a scanning lens configured to condense the scanned light flux to the scanning surface, an optical path inflection mirror configured to inflect the scanned light flux, and an imaging lens configured to lead the light flux emitted from the light source to the deflector. The plurality of scanning optical systems are provided at both sides of the deflector having the deflector therebetween such that one each of the scanning optical systems at both sides of the deflector include a set of the optical scanning system and respective light fluxes scanned by the deflector in the set of the optical scanning system become approximately parallel in a main scanning direction, and an expression, |N−M|=2k+1 is satisfied when the number of optical path inflection mirrors provided in each of the set of scanning optical systems is represented by “N” (i.e., N≧2) and “M” (i.e., M≧1), and “k” is an integer equal to zero or larger.

This invention relates to temperature and color adjusting light device, which comprises the following parts: one first light element with one light layer as semiconductor for blue light; one light fluorescence part to absorb first light element green lights to form grey light mixed with blue light; one second light element with one light layer of semiconductor to send red light to form white light mixed with grey light; one current adjusting device connected to the second light part to adjust and transmit to second light part to control mixture.

A touch sensor integrated type display device includes a plurality of gate lines and a plurality of data lines which are formed to cross over each other; a plurality of pixel electrodes respectively formed in areas defined by crossings of the plurality of gate lines and the plurality of data lines; a plurality of first electrodes, each of which is formed between the pixel electrodes and in parallel with the gate line, the pixel electrodes being adjacent to each other with the gate line interposed therebetween; a plurality of second electrodes formed in parallel with the data lines, at least a portion of each of the plurality of second electrodes overlapping the pixel electrode; and a shielding electrode formed between each first electrode and each second electrode.

The invention discloses a successive approximation analog-digital converter structure and a low-power-consumption switch method thereof. Compared with a conventional full base plate sampling technology, the successive approximation analog-digital converter structure has the advantages that only one pair of bootstrapped sampling switches is needed by a highest-order capacitor bottom plate sampling technology, so that the accuracy of a successive approximation analog-digital converter is increased; the switching area is reduced; and the power consumption is lowered. Through adoption of the switching method provided by the invention, energy is not consumed during generation of first two orders in a switching process. Moreover, only a common-mode voltage V<cm>=(1/2)V<ref> is taken as a reference voltage, so that dynamic energy consumption in the switching process is lowered greatly. Redundant bit capacitors are introduced into conversion of a capacitor array digital-analog converter, so that the total area of the capacitors is reduced greatly, and the switching energy consumption is further lowered. The successive approximation analog-digital converter structure is suitable for a high-accuracy low-power-consumption successive approximation analog-digital converter, and has a very good economic benefit.

The invention discloses a method and a mobile terminal for screen backlight adjusting, wherein the method includes: the mobile terminal obtains a present measured value of an ambient light sensor and judges whether the difference between the present measured value of the ambient light sensor and the last measured value is larger than a threshold value, if the difference between the present measured value of the ambient light sensor and the last measured value is larger than the threshold value, a present measured value of a gravity sensor in the mobile terminal is obtained, and an elevation angle of the mobile terminal is determined, whether the elevation angle is larger than a critical value is judged if the elevation angle is smaller than or equal to the critical value, corresponding screen backlight brightness is determined and set according to the present measured value of the ambient light sensor and a first relation, and if the elevation angle is larger than the critical value, the screen backlight brightness is controlled to be constant or be relatively small in variation. Due to the method, in an indoor environment, when the elevation angle of the position which the mobile terminal is located is larger than the critical value, the situation in which drastic change of screen backlight happens can be avoided, and the experience of a user is optimized.

A thin film magnetic head is provided. The thin film magnetic head includes a read head and a write head, a heating element, or the combination thereof. The heating element includes a heating conductor layer and a high-melting-point-material layer disposed so as to at least partially overlap the heating conductor layer. Electromigration in the heating conductor layer can be suppressed.

An EGR system has an EGR distributor in the form of a single plate integrally equipped with an exhaust gas passage and a coolant passage for recirculated exhaust gas therewith. The lengths of each exhaust gas passages for the recirculated exhaust gas to reach each cylinder are equal to each other, whereby the amount of the exhaust gas recirculated to each intake passage is same and the overall efficiency of the EGR system is improved. The EGR distributor is preferably manufactured in the form of a single component by AL die casting method.

The invention provides a method for compacting data transmitted with drilling well mud pulse. The method comprises the following steps that step 1, an encoding method adopted by a downhole instrument is a PPM (pulse position modulation) encoding method; step 2, corresponding log parameters and transmission speed are configured for the downhole instrument; step 3, each measuring pup joint of a log instrument starts to acquire data; step 4, subtraction is performed on the subsequently acquired data and a first group of data, and the difference value is stored by using one byte; and step 5, if the difference value overflows, the group of data acquired during overflow serves as the first group of data, and circulation is sequentially performed, and if the difference value does not overflow, the difference value serves as data, after being subjected to PPM encoding, the data is sent to the ground, circulation is sequentially performed, and the data in the step is stopped to be acquired and uploaded until a pump closing signal is detected. The method has the advantages that the uploading efficiency of a downhole signal is improved, so that geosteering and formation evaluation are carried out to improve the decision ability of a field drilled well.

To reduce the width of variations in temperature of circulating liquid due to a variation in a heat load of an external device to a low level to stabilize the performance of the external device in a constant temperature liquid circulating device. In a constant temperature liquid circulating device that connects a piping of circulating liquid in an external device between a discharge port and a return port of a conduit for delivering the circulating liquid at a constant temperature by a pump, a flow amount sensor and temperature sensors for detecting discharge temperature (T₁) of the circulating liquid from the conduit and the return temperature (T₂) of the circulating liquid are provided in the conduit, so that the flow amount and the temperature of the circulating liquid is controlled by a controller according to the heat load of the external device obtained on the basis of the outputs from the temperature sensors. The control is such that when the difference between the discharge temperature and the return temperature is smaller than the preset value, the temperature of the circulating liquid is controlled corresponding to the heat load, and when the temperature difference is larger than the preset value, the temperature of the circulating liquid is controlled corresponding to the heat load by increasing the flow amount of the circulating liquid to the piping of the external device in addition to the temperature control described above.

A surface acoustic wave device includes a piezoelectric substrate made of LiTaO₃ or LiNbO₃ having an electromechanical coefficient of about 15% or more, at least one electrode which is disposed on the piezoelectric substrate and which is a laminate film having a metal layer defining a primary metal layer primarily composed of a metal having a density higher than that of Al or an alloy of the metal and a metal layer which is laminated on the primary metal layer and which is composed of another metal, and a first SiO₂ layer which is disposed in a remaining area other than that at which the at least one electrode is located and which has a thickness approximately equivalent to that of the electrode. In the surface acoustic wave device described above, the density of the electrode is at least about 1.5 times that of the first SiO₂ layer. In addition, a second SiO₂ layer disposed so as to cover the electrode and the first SiO₂ layer and a silicon nitride compound layer disposed on the second SiO₂ layer are further provided.