摘要:
The present invention provides a monitoring method for monitoring a semiconductor wafer, in a chemical mechanical polishing (CMP) process. The CMP process is used to polish a dielectric layer of the semiconductor. The monitoring method comprises: 1. exposing the dielectric layer of the semiconductor wafer to an input light beam of fixed wavelength at a predetermined angle to generate a reflected light beam within a predetermined time period after performing the CMP process, the intensity of the reflected light beam undergoing periodic changes in response to the gradual thinning of the dielectric layer during the CMP process, 2. monitoring the intensity of the reflected light beam at a starting period within the predetermined time period and obtaining a periodic change rule according to the periodic changes of the intensity of the reflected light beam, and 3. monitoring the intensity of the reflected light beam throughout the rest of the predetermined time period and generating an output signal to stop the CMP process if the change of the intensity of the reflected light beam is not in accordance with the periodic change rule.
摘要:
A method of removing a polysilicon buffer in a method of forming a field oxide and an active area is disclosed herein that comprises the step of applying an etching selectivity solution to the polysilicon buffer to substantially remove the polysilicon buffer without substantially affecting the field oxide, a pad oxide, and the substrate. An etching selectivity solution is defined herein is a solution that has an etching rate for one material that is higher than for another material. In this case, the etching selectivity solution has an etching rate for polysilicon material that is higher than its etching rate for field oxide material. Accordingly, when the etching selectivity solution is applied to the polysilicon buffer, it will substantially etch off the polysilicon buffer without substantially affecting the field oxide. In the preferred embodiment, the etching selectivity solution comprises a mixture of HF and HNO3, or HF, HNO3 and CH3COOH. The advantage of this method is that it reduces the likelihood of the formation of pits within the field oxide, pad oxide and the substrate. Consequently, the charge-to-breakdown voltage for the device is not degraded because of the absence of the pits. In addition, methods of forming a field oxide and an active area are disclosed herein that uses at least in part the disclosed method of removing a polysilicon buffer.
摘要:
A phase-locked loop (PLL) circuit includes a voltage-controlled oscillator (VCO) having a VCO input for receiving a control voltage and a VCO output, a feedback loop between the VCO input and the VCO output, and a start-up circuit having a start-up circuit input and a start-up circuit output. The start-up circuit output is coupled to the VCO input and the start-up circuit input is coupled to the VCO output. The start-up circuit provides a voltage at its start-up circuit output during a start-up phase, which terminates after a predetermined number of feedback pulses are detected by the start-up circuit.
摘要:
A bicycle fitting method for producing a bicycle is provided. The method includes the steps of receiving a bicycle riding information and a body measurement corresponding to a cyclist. According to the bicycle riding information, a bicycle model is provided. According to the body measurement and the selected bicycle model, a bicycle frame size and a set of bicycle geometric adjustment parameters are provided. According to the bicycle model, the bicycle frame size, and the set of bicycle geometric adjustment parameters, a bicycle which fits the cyclist is produced.
摘要:
A method for driving an OLED panel includes the following steps. An image signal is inputted to a power control unit, wherein the power control unit includes a calculator and a power control look-up table. A display loading ratio is calculated by the calculator according to the image signal, wherein the power control unit can find an emitting time ratio by the power control look-up table corresponding to the display loading ratio, the emitting time ratio can be transformed to an emitting time signal, and the emitting time signal can be inputted to the OLED panel so as to control the power consumption of the OLED panel.
摘要:
A driving device and a driving method for a liquid crystal display are provided. The driving device includes a memory unit, a comparator, a compensation unit, and a selector. The memory unit provides a storage image and a previous comparison result. The comparator compares a present image with the storage image and outputs a present comparison result. The compensation unit processes the present image according to the storage image to generate a plurality of processed present images. The selector selects and outputs one of the present image and the processed present images according to the previous comparison result and the present comparison result. Thereby, the space required in the memory unit is reduced and the image display quality is improved.
摘要:
An antenna structure includes a substrate, a radiation unit, and a metal plate. The radiation unit is disposed on the substrate. The metal plate is separated from the radiation unit for a distance and is electrically isolated with the radiation unit. The metal plate is excited by the radiation unit to generate at least one resonance mode, and includes a hole penetrating the metal plate. Thus, the gain is enhanced, the bandwidth is increased, and multiple resonance modes are provided.
摘要:
Disclosed is a battery holding structure of a two-wheeled vehicle. The two-wheeled vehicle includes a frame and a saddle. A storage box is arranged under the saddle. A power unit is arranged under the storage box. The frame is provided with a battery mounting seat. The storage box has a front end forming a shielding section. The shielding section forms a maintenance opening corresponding to the battery mounting seat. The battery mounting seat receives therein a battery to have the battery located within the range of the maintenance opening. To maintain the battery, it only needs to lift the saddle and remove the maintenance cover that covers the maintenance opening to allow the maintenance of the battery to be carried out. This simplifies the maintenance operation of the battery and also simplifies the maintenance of a nozzle of an air intake system provided for an internal combustion engine.
摘要:
A method and a device for generating a three-dimensional image are provided. In the method, in an Nth time slot, an Nth left-eye image is received and stored in a download buffer of a first memory unit by a first control unit. An Nth right-eye image is received and stored in a download buffer of a second memory unit by a second control unit, where N is a positive integer from 1 to M, and M is a positive integer. In an (N+1)th time slot, the Nth right-eye image is received from the second control unit through a data transmission interface and stored in a receive buffer of the first memory unit. In an (N+2)th time slot, the Nth left-eye image and the Nth right-eye image are combined into an Nth three-dimensional image stored in a display buffer of the first memory unit for real time display.