33results about How to "Eliminate residual charge" patented technology

A display apparatus includes a plurality of scan lines, a plurality of data lines, a plurality of pixel transistors, a plurality of pixel electrodes, a gate driver, a source driver and a discharge circuit. The data lines are intersected with the scan lines. Each of the pixel transistors is electrically coupled to a corresponding scan line and a corresponding data line, and each of the pixel electrodes is electrically coupled to a corresponding pixel transistor. The gate driver is electrically coupled to the scan lines, and the source driver is electrically coupled to the data lines. The discharge circuit is electrically coupled to the gate driver and the data lines. The discharge circuit starts when the display apparatus is turned off, to control the gate drive for turning on the pixel transistors simultaneously, and make the pixel electrodes be electrically communicated with a reference voltage.

A gate driver (24) which is provided by an IGZO-GDM and a level shifter circuit (13) are connected to each other via a first through a fifth wires (OL1 through OL5). Each wire (OL) is connected to a discharge unit (190). If an electric power supply to a first through a fifth output circuits (OC1 through OC5) in the level shifter circuit (13) becomes lower than a lower operation limit value during a power-off sequence which is supposed to remove a residual charge from inside a panel, outputs from the first through the fifth output circuits (OC1 through OC5) assume a high-impedance state, whereupon a potential on each wire (OL) is drawn by a discharge unit (190) into a ground potential. Therefore, residual charge inside the panel is removed quickly and stably when power supply is shut off.

An image printing apparatus and a controlling method thereof capable of outputting optimum images adjusted in accordance with characteristics of the printing material used, including: a photosensitive section for forming a latent electrostatic image; a charging section for charging the photosensitive section; an exposing section for forming the latent electrostatic image of a certain pattern by projecting a laser beam onto the photosensitive section which is charged by the charging section, and by selectively eliminating any residue of electric charge of the photosensitive section; a developing section for developing the latent electrostatic image by applying a developer onto the latent electrostatic image formed on the photosensitive section; a transferring / fixing section for transferring the image developed by the developing section to a printing material; a printing material feeding section for sequentially supplying the printing material to the transferring / fixing section; a data reading section for reading printing material data recorded on the printing material which is fed by the printing material feeding section; and a controlling section for controlling the above components of the image printing apparatus, and for determining the printability of the printing material based on the data about the printing material which are read by the data reading section, and when the printing material is determined as being acceptable, for setting functional set values for the respective above components of the image printing apparatus in accordance with the characteristics of the printing material to output optimum images. Since controlling parameters for the respective components are reset in accordance with the characteristics of the printing material, optimum images can be fully guaranteed when printing the printing material.

Provided is a driving system for a display device and a driving circuit applicable to an OLED, which belong to the field of display technology, and can eliminate the phenomenon of shortening in lifetime of the OLED caused by a long-term DC bias light-emitting state of the OLED.

An anti-pop device for audio amplifier is suitable for outputting signals to a speaker to produce sound waves. The audio amplifier comprises a pre-processing unit, a filter and a voltage level detection unit electrically connected to the pre-processing unit. The voltage level detection unit detects the supply voltage. As the supply voltage is lower than a predetermined value, the voltage level detection unit outputs a signal to the pre-processing unit for lowering the audio volume so that a pop noise caused by circuit malfunction resulted from excessively-low supply voltage can be prevented.

A method for driving a liquid crystal display is provided. The method includes: turning on a display-enable switch to pass through time of liquid crystal response and light display of a first frame until a reset time appeared. At the same time, turn on a second write-enable switch to pre-deliver a pixel signal corresponding to a second frame to a second storage capacitor. During reset time of the first frame time, turn on a reset switch and provide a reset voltage signal to a pixel electrode while the first and the second display-enable switches and the first and the second write-enable switches are turned off, in which the reset voltage signal has a first voltage level during a first period, and a second voltage level in a second period. Therefore, the method can increase brightness of the display, and decrease image sticking effect thereof.

The invention discloses an array substrate, an array substrate driving method and a display panel. By short connection of all control ends of test switches with second-type pins in a non-display area,in a scanning stage, an integrated circuit inputs control signals to the control end of each test switch through the second-type pins to control on and off of each test switch so as to disconnect each test switch with a data line to avoid interferences on normal operations of the data line; in a scanning blank stage, the integrated circuit inputs control signals to the control end of each test switch through the second-type pins to control on and off of each test switch so as to eliminate residual electric charges in the data line. Therefore, the problem of influences on image display effectsof the display panel due to a great quantity of residual electric charges is solved, and charging efficiency improvement and power consumption reduction can be realized. On and off of each test switch can be controlled only by short connection of the control end of each test switch with the second-type pins, so that a method for eliminating the residual electric charges on the data line is simpler.

An object of the present invention is to realize a display device having a layered wiring structure, that is capable of detecting leakage without fail by using a simple testing circuit.Source bus lines (SL) are wired such that, in the layered region, two source bus lines (SL) adjacent in a vertical direction are a combination of a source bus line (SL) of an odd-numbered column and a source bus line (SL) of an even-numbered column, and two source bus lines (SL) adjacent in a horizontal direction are a combination of a source bus line (SL) of an odd-numbered column and a source bus line (SL) of an even-numbered column. Potentials of different magnitudes are supplied respectively to source bus lines (SL) of odd-numbered columns and source bus lines (SL) of even-numbered columns via testing lines.

The invention discloses a display device which comprises a pixel electrode, a charge elimination circuit, a piezoresistor and a control circuit, the piezoresistor is connected with the pixel electrode and the charge elimination circuit, the piezoresistor is provided with a threshold voltage, and the control circuit is coupled with the piezoresistor and used for controlling the piezoresistor to be turned on or turned off; wherein when the display device is shut down, the control circuit controls the piezoresistor to be conducted so as to communicate the pixel electrode with the charge elimination circuit, and the pixel electrode discharges through the charge elimination circuit; when the display device works normally, the control circuit controls the piezoresistor to be turned off, the pixel electrode is disconnected from the charge elimination circuit, and the pixel electrode is subjected to short-circuit discharge during shutdown, so that the problem that shutdown ghost shadows appear on a display panel due to slow shutdown discharge speed of the pixel electrode is solved.

A cable composite cross-linking process belongs to the technical field of cable manufactures. The invention discloses a cable composite cross-linking process method comprising using a cable insulatedwire core outer extruded tube extrusion radiation cross-linking material as an isolation layer; subjecting the insulated wire core to a vulcanization cross-linking process; subjecting the isolation layer to a irradiation cross-linking process; subjecting sheath rubber to a under-sulfur process; and performing a secondary cross-linking process to eliminate electric charges such that the sheath is completely cross-linked. The method solves the high elasticity and the deformation liableness of a rubber material, and solves the possibility of residual charges in the irradiation cross-linking, so that the cable is fully cross-linked. The process technology of combining vulcanization cross-linking with irradiation cross-linking technologies not only retains the advantages of the respective cross-linking technologies, but also compensates for the defects of the respective cross-linking technologies.

The application belongs to the technical field of electrostatic spinning, and particularly relates to an electrostatic spinning device. In an electrostatic spinning process, the charges injected at high voltage remain inside fibers along with the solidification of electrospinning fibers, thereby affecting the subsequent deposition process of the electrostatic spinning, and finally causing the electrostatic spinning process to terminate. The invention provides the electrostatic spinning device. The electrostatic spinning device comprises a liquid spraying mechanism and an ultraviolet light generating mechanism, wherein the liquid spraying mechanism is matched with the ultraviolet light generating mechanism; and the liquid spraying mechanism comprises a liquid supply assembly and a spray head assembly which are connected with each other, and the liquid supply assembly is connected with a high-voltage power supply. The residual charges in the spinning fibers are dissipated through ultraviolet light, the influence of residual charges on the applied electric field is eliminated, the stability of the electrostatic spinning process is improved, the yield of the spinning fibers and the accumulated thickness of the spinning fibers are greatly improved, the time cost of electrostatic spinning is reduced, and the application range of the electrostatic spinning technology is widened.

The invention discloses a display control device of a display screen, a control method thereof and terminal equipment. Time division multiplexing of a touch control TP line and a common voltage Vcom line of the display screen are realized. The display control device comprises the components of a controllable switch unit which is used for controlling whether the Vcom line is grounded; and a displaycontrol chip which is used for controlling the controllable switch unit in an interval after TP line scanning and before Vcom line scanning so that each Vcom line of the display screen is grounded and performing discharging processing on each Vcom line. Therefore residual charges after TP line scanning can be quickly eliminated, thereby effectively setting problems of screen flash and Flicker drift, supplying reliable insurance for displaying a picture on the display screen, and greatly improving user experience.

The invention provides semiconductor process equipment, which comprises a process chamber and an electrostatic chuck arranged in the process chamber, and is characterized in that a plurality of salient points are arranged on the bearing surface of the electrostatic chuck and are used for supporting a wafer; the equipment further comprises a charge eliminating device and a grounded sheet taking part. Wherein the charge eliminating device comprises an elastic conductive part, and when the elastic conductive part is placed on the plurality of salient points and when the electrostatic chuck is electrified, the elastic conductive part can generate elastic deformation under the action of electrostatic force so as to be in contact with the bearing surface of the electrostatic chuck, so that residual charges on the bearing surface are transferred; the sheet taking part is used for placing the elastic conductive part on the plurality of salient points or taking away the elastic conductive part from the plurality of salient points; and the sheet taking part is grounded. According to the semiconductor process equipment provided by the invention, the residual charge on the bearing surface of the electrostatic chuck can be quickly eliminated, and the process chamber does not need to be opened.

The invention discloses a desorption method of silicon chips, which comprises initially increasing backward voltage to an electrostatic chuck for removing electrostatic charge inside the electrostatic chuck, simultaneously removing residual electric charge on the surface of the silicon chips through ionizing inert gas into plasmas by employing the electrical conductivity of ions and judging whether the silicon chips are completely desorbed through the leakage flow rate of back blowing He gas of the back face of the silicon chips between the silicon chips and the electrostatic chuck. The invention has the advantages of high technical integration, safety and high production efficiency, and is particularly adaptable to desorption between the silicon chips and the electrostatic chuck in the processing technique of semiconductor silicon chips.

An image formation apparatus applies electrical charge to an image carrier surface of a photosensitive body during a period between light exposure scanning for successive pages, and performs a first control such that rotation distance of the photosensitive body during the period is shorter than circumferential length thereof. The image formation apparatus includes a coverage calculation unit that calculates coverage of a target page, a prediction unit that, when inter-image distance between images of the target page and a next page, in terms of a sub-scanning direction, is shorter than the circumferential length, predicts whether image noise will occur for the next page based on the coverage, and a sheet interval control unit that, upon the prediction unit predicting affirmatively, suspends the first control and performs a second control on the rotation distance such that the inter-image distance is extended to be at least as long as the circumferential length.

A drive method using Prime Reset for organic electroluminescent display board is disclosed. It can decrease the electric consumption and minimize the variation of scan waveform. For the line chosen from multiple scan lines, the voltage provided for it can only shift only when it emits light and the voltage is supplied to data line in its luminescent area.

An image forming apparatus includes: an image holding section that includes a photoconductor having a surface protection layer; a charging section that charges a surface of the image holding section with a direct current potential; an exposure section that exposes the surface of the image holding section charged by the charging section to form an electrostatic latent image; a developing section that develops the electrostatic latent image formed on the image holding section; a transfer section that electrostatically transfers a visible image formed on the image holding section to a transfer medium; an exposure static elimination section that eliminates a residual charge of the image holding section by using the exposure section when image formation on the image holding section is stopped; a transfer static elimination section that eliminates the residual charge of the image holding section by using at least the transfer section when the image formation on the image holding section is stopped; and a switching section that causes the exposure static elimination section to perform static elimination under a condition that the residual charge of the image holding section does not exceed a threshold value of an allowable static elimination level at which the residual charge is eliminated by the exposure static elimination section, and causes the transfer static elimination section instead of the exposure static elimination section to perform static elimination under a condition that the residual charge exceeds the threshold value.