30results about How to "Lower trip voltage" patented technology

A power up signal generator includes a signal converter for converting an applied external source voltage to a voltage applied at a trigger node when the external source voltage rises to a first threshold, and a current source for flowing a reference current from the trigger node. A first inverter connected to the trigger node outputs a low level signal when the trigger node voltage reaches a second threshold. A second inverter outputs a power up signal after receiving the low level signal from the first inverter. The signal converter may include a PMOS transistor configuration, such that the trip voltage of the power up signal generator is dependent only on a single MOSFET transistor threshold voltage.

The invention provides a pixel structure for a thin film transistor liquid crystal display, wherein a pixel electrode and a transparent conducting layer are formed on a substrate; a drain electrode isformed on the pixel electrode, a data scanning line and a source electrode are formed on the transparent conducting layer, the source electrode is connected with the data scanning line, and the drainelectrode is connected with the pixel electrode; an ohmic contact layer and a semiconductor layer are formed on the source electrode and the drain electrode respectively, and the contact part of theohmic contact layer and the source electrode is not connected with the contact part of the ohmic contact layer and the drain electrode; a passivation layer is formed on the parts of the source electrode and the drain electrode which are not covered by the ohmic contact layer, the part of the ohmic contact layer which is not covered by the semiconductor layer, and the semiconductor layer respectively; and a grid scanning line, a grid electrode and a grid electrode insulating layer are sequentially formed on the passivation layer. Simultaneously, the invention provides a method for manufacturingthe pixel structure for the thin film transistor liquid crystal display, and the pixel structure and the manufacturing method can save the manufacturing technological process and enlarge the storagecapacitance.

This invention provides a TFT LCD array base plate structure including a base plate, a light strip, a grid insulation layer, a data scanning line, a film transistor, a passivation layer and its trough hole or groove formed on the drain of the film transistor, a pixel electrode formed on the passivation layer connected with the drain via the through hole or the groove, in which, the light strip is placed around the pixel electrode. This invention also provides a manufacturing method for the TFT LCD array base plate structure, which forms a close light strip around the pixel electrode the same time when forming grid scanning lines.

A thin film transistor liquid crystal display (TFT-LCD) array substrate comprising a gate line and a data line formed on a base substrate. The gate line and the data line intersect with each other to define a pixel region, in which a pixel electrode and a thin film transistor (TFT) are formed, and a first insulating layer and a second insulating layer are interposed between the gate line and the data line, and the pixel electrode is disposed between the first insulating layer and the second insulating layer. A method of manufacturing a TFT-LCD is also disclosed.

The invention discloses a gate driving circuit which comprises multiple stages of gate driving units, wherein each of the gate driving units is used for driving one corresponding gate line on a display panel; each gate driving unit comprises an input module, a first pull-down module, an output module and a chamfering control module; each input module is used for providing a first voltage signal toa first node according to a pre-stage gate driving signal; each first pull-down module is used for providing a third voltage signal to the first node according to a first lower-stage gate driving signal; each output module is used for outputting a second voltage signal as a present-stage gate driving signal according to level of the first node; and each chamfering control module is connected withthe corresponding output module at a third node, and is used for pulling down the present-stage gate driving signal to form a present-stage gate driving signal having a chamfered waveform according to the control of a second lower-stage gate driving signal.

The invention discloses an array substrate, a display device and a method for manufacturing the array substrate, and relates to the technical field of liquid crystal display. Leaping voltages generated by stray capacitance can be lowered, and therefore the display effect can be improved. The array substrate comprises a grid line, a data line, a thin film transistor and a transparent electrode. The grid electrode of the thin film transistor is connected to the grid line, the source electrode of the thin film transistor is connected to the data line, and the drain electrode of the thin film transistor is connected to the transparent electrode. Grid through holes are formed in the area, overlapping with the drain electrode, in the grid electrode, or the grid electrode comprises a first area, and the thickness of the grid electrode inside the first area is smaller than the thickness of the grid electrode outside the first area. The first area is placed in the area, overlapping with the drain electrode, in the grid electrode.

The invention discloses a grid drive circuit, a method thereof, an array substrate and a liquid crystal display device and relates to the technical field of liquid crystal display, so an actual pixel voltage is closer to a charge voltage and the display effect is improved. The grid drive circuit comprises a first voltage generating unit, a second voltage generating unit, a starting unit and a cut-off unit; the first voltage generating unit is used for generating a first voltage in one-line scanning time, wherein the one-line scanning time is formed by a first stage and a second stage; the second voltage generating unit is used for generating a second voltage in the first stage; the starting unit is used for outputting the sum of the first voltage and the second voltage in the first stage and outputting the first voltage in the second stage; the cut-off unit is used for outputting a cut-off voltage at the end of the one-line scanning time.

Embodiments of the present invention disclose an array substrate and a driving method thereof, and a display device. The array substrate comprises: a pixel electrode; a data line; a first thin film transistor comprising a first gate electrode, a first source electrode and a first drain electrode, and a second thin film transistor comprising a second gate electrode, a second source electrode and a second drain electrode; a first gate line connected with the first gate electrode and a second gate line connected with the second gate electrode, wherein the first source electrode and the second source electrode are electrically connected with the data line, and the first drain electrode and the second drain electrode are electrically connected with the pixel electrode.

The invention relates to a liquid crystal display and a control method thereof. The liquid crystal display comprises a colour filter panel and an array panel, wherein a storage capacitance electrode wire and a gate line which is connected with a scan drive circuit are formed on the array panel; a common electrode is formed on the colour filter panel or the array panel; and the storage capacitanceelectrode wire is connected with a control circuit which is used for controlling the electric potential of a storage capacitance electrode. When the scan drive circuit applies a square row scanning signal to the gate line and a scanning signal rising edge approaches, the control circuit applies a first voltage to the storage capacitance electrode wire according to a control voltage; and when a row scanning signal falling edge approaches, the control circuit applies a second voltage to the storage capacitance electrode wire according to the control voltage, wherein the first voltage is less than the second voltage. The control method of the invention is applied to the manufacturing of liquid crystal displays.

The invention provides a scanning line drive method of an active array display. The method includes: dividing a plurality of scanning lines of the active array display into S groups, connecting each scanning line with one scanning lead, arranging S-1 scanning lines between two adjacent scanning lines in each group, S>=2 and is an integer; exerting drive signals on the scanning leads which are connected with the plurality of scanning lines of the active array display line by line, and enabling luminance of line pixels to match with each other, and the luminance of the line pixels corresponds to the Mth scanning lines in all the groups. In addition, the invention further provides a drive circuit of the scanning lines of the active array display and an active array display with the drive circuit. Due to the adoption of the technical scheme, the problem that display effects of scanning lines of an existing active array display are not the same is solved.

The invention relates to a liquid crystal display and a control method thereof. The liquid crystal display comprises a color film substrate and an array substrate, wherein common electrodes are formed on the color film substrate, and storage capacitance electrode lines and grid lines connected with a scanning drive circuit are formed on the array substrate; and the storage capacitor electrode lines are connected with a control circuit for controlling storage capacitance electrode potentials. When the scanning drive circuit applies square line scan signals on the grid lines, and the rising edge of the scan signals comes, the control circuit applies a first voltage on the storage capacitance electrode lines, and when the falling edge of the scan signals comes, the control circuit applies a second voltage on the storage capacitance electrode lines; and the first voltage is smaller than a common electrode voltage applied on the common electrodes of the color film substrate, and the secondvoltage is larger than the common electrode voltage. The invention can output pulse voltages on the storage capacitance electrode lines, so that the potential difference between liquid crystal layerscan be compensated when the line scan signals change, thereby being favorable for improving the display picture quality of the liquid crystal display.

The invention provides an array substrate, a manufacturing method thereof, a display panel and a display device. Second pixel electrodes are arranged between each first electrode wire and a corresponding second electrode wire of the array substrate, and the second pixel electrodes are electrically connected with a first pixel electrode belonging to the same pixel unit as the second pixel electrodes; by increasing the area of the pixel electrodes, the leaping voltage of the display device is reduced, and the display quality of the display device can be ensured.

The invention provides a TFT-LCD (Thin-film transistor liquid crystal display) array base plate, a manufacturing method and an LCD. The method includes the following steps: forming a grid scanning line and a grid as well as a broken data signal line, a common electrode and a shading strip at the positions that the broken data signal line, the common electrode and the shading strip are crossed with the grid scanning line at one step during the first picture composition process; during the second picture composition process, forming a via hole used for connecting the broken data signal line and a channel position on the grid scanning line; and during the third picture composition process, forming a pixel electrode, a data signal line connecting line, a source electrode and a drain electrode, wherein the data signal line connecting line is used for connecting the broken data signal line through a via hole, the TFT is positioned at the position where the grid scanning line is crossed with the data signal line connecting line, the source electrode is positioned on the data signal line connecting line, and the drain electrode and the pixel electrode form into a whole. According to the invention, the three-time mask technology is adopted to shorten the production phase and reduce the cost, and besides, the performance of the TFT-LCD array base plate is improved.