53results about How to "Reduce glow time" patented technology

The invention relates to an AMOLED display device and a pixel driving method thereof. The AMOLED display device comprises a substrate and sub pixel unit arrays formed on the substrate. Each sub pixel unit array comprises two sub pixel units arranged side by side, wherein the sub pixel units are the same in color. Each sub pixel unit is correspondingly connected with a scanning line and a data line. According to switching transistors in the sub pixel units in the same column, one ends of the switching transistors are connected to the same data line in parallel so as to receive data signals output by a data driving unit. One end of each data line is connected with the output end of the data driving unit through a first control switch unit. When the first control switch units on the data lines in the odd columns are switched on or switched off, the first control switch units on the data lines in the even columns are switched off or switched on so that every two sub pixel units arranged side by side with the same color can emit light alternately on different-frame pictures. According to the AMOLED display device and the pixel driving method of the AMOLED display device, one traditional sub pixel unit is divided into two parts, and the two sub pixels are driven to emit light alternately on the different-frame pictures so as to shorten the light-emitting time of an OLED and prolong the service life of the OLED.

The invention provides an OLED pixel drive circuit and an OLED display panel. The OLED pixel drive circuit is provided with a third thin film transistor (T3) between a DC voltage end (Vdd) and an organic light emitting diode (D), and on-off of the source electrode and the drain electrode of the third thin film transistor (T3) is controlled through control signals (P), so as to conveniently control luminescence time of the OLED. In the OLED display panel, the OLED pixel drive circuit of each sub-pixel is internally provided with the third thin film transistor (T3) between the DC voltage end (Vdd) and the organic light emitting diode (D), and each adjacent two pixels are controlled to be in state that one illuminates and the other does not illuminate in turns in a display process respectively through a first control signal (P1) and a second control signal (P2) whose potentials are opposite, so as to conveniently control the luminescence time of the OLED in each pixel, shorten the luminescence time of the OLED in each pixel, and prolong life of the OLED display panel.

OLED pixel driving circuit, array substrate and display device are provided. The pixel driving circuit comprises a driving control unit, a first light emitting unit and a second light emitting unit. Two OLEDs share one driving control unit, so the two OLEDs alternately emit light. In this way, light emitting time of the OLEDs is reduced, number of parasitic capacitors and data lines in a panel is reduced, and aperture ratio of the OLED device is increased; and OLEDs are enabled to be in reverse bias in a non-light emitting display frame, so that OLEDs do not have to be in a DC bias state for a long time, and thus, aging of the OLED device is slowed down. No other reverse bias voltage is connected externally, difficulty of tracing of the pixel circuit and crosstalk from a bias voltage line to other signal lines are reduced.

The invention provides an OLED display and a source driver. The output channels of source driver are divided into odd-numbered (ODD) and even-numbered (EVEN) output channels. With the odd-even channel selection module (33) in source driver to control the logic circuit and driver module (31) to select only odd-numbered (ODD), only even-numbered (EVEN) output channels or both for output based on strobe enabling signal (EN) and odd-even selection signal (SEL). Moreover, through rapid switching between high and low of the odd-even selection signal (SEL), the switching of outputting to only odd-numbered (ODD) and only even-numbered (EVEN) output channels is achieved so that odd-numbered pixel units and even-numbered pixel units in OLED display emit light alternatingly. Without changing pixel structure and reducing opening ration, while ensuring normal display, the invention shortens the light-emitting time of OLED inside each pixel to delay OLED display ageing.

The invention discloses a driving circuit and a driving method of a display array, relates to the field of display technology, and satisfies the display requirement of high resolution. The driving circuit of the display array includes m rows×n columns of pixel driving units. Each pixel driving unit includes a plurality of gray scale control periods in one driving cycle. The pixel driving unit includes: a gate transistor, a first driving transistor, a storage capacitor and a light emitting circuit. Wherein: the gate transistor is electrically connected to the control terminal of the first drive transistor and the storage capacitor respectively. Each gate transistor is used to write m data signals into each storage capacitor in one-to-one correspondence under the control of m row scan signals in each gray scale control period. The first electrode of the first driving transistor is electrically connected to the light emitting circuit. The second electrode of the first driving transistor is grounded. Each first driving transistor is used to control the operation of each light emitting circuit under the control of m data signals in each gray scale control period.

The invention provides a yarn-withdrawing control system and method for a weft storage device. The yarn-withdrawing control system comprises a yarn-withdrawing self-learning unit, a photoelectric-tube control unit and a yarn-stopping-needle control unit, wherein the yarn-withdrawing self-learning unit is used for recording the yarn-withdrawing recording period from the time when a yarn stopping needle is lifted to the time when the yarn stopping needle falls down as the output pulse of a yarn-withdrawing photoelectric weft feeler reaches a preset value, and is used for calculating yarn-withdrawing control time according to the yarn-withdrawing recording time; the photoelectric-tube control unit is used for closing a luminescent tube of the yarn-withdrawing photoelectric weft feeler after the yarn-withdrawing control time is obtained; the yarn-stopping-needle control unit is used for allowing a timer to start to time when the yarn stopping needle is lifted and after the luminescent tube of the yarn-withdrawing photoelectric weft feeler is closed and allowing the yarn stopping needle to fall down when the timer reaches the yarn-withdrawing control time.