摘要:
A method for driving an active matrix liquid crystal display (LCD) (200) includes: dividing a frame time into a first period and a second period; defining a gradation voltage that makes the light transmission of a pixel unit accumulated in the first period correspond to image data of an external circuit; defining a black-inserting voltage which corresponds with a black image; applying the gradation voltage to pixel electrodes (203) of pixel units of the LCD when the gate lines (201) are scanned by a gate driver (210) of the LCD in the first period; applying the black-inserting voltage to the pixel electrodes of the pixel units when the gate lines are scanned by the gate driver in the second period; and turning off a backlight of the LCD in the second period.
摘要:
A driving method for an active matrix liquid crystal display panel includes the following steps. First, a frame period is divided into a display period (t1) and a black insertion period (tr). A gray-scale voltage is generated according to a desired corresponding light transmittance of each pixel of the liquid crystal display panel; and during the display period, the gray-scale voltage is supplied to a corresponding pixel electrode of the liquid crystal display panel. Then during the black insertion period, a restoring voltage Vh is supplied to the pixel electrode, so that the pixel is returned to an initial black state. Accordingly, the quality of motion pictures of the liquid crystal display panel is good.
摘要:
A method for driving a liquid crystal display (200) includes: providing a liquid crystal display having a plurality of pixel units and a backlight; dividing a frame time into a plurality of sub-frames; defining each pixel unit to have two states, namely on or off, in each of the sub-frames; defining the backlight to have a gradation luminance and two states, namely on or off, in each of the sub-frames; and synchronously controlling the state of each pixel unit, a time period of the on state of each pixel unit, the gradation luminance of the backlight, and a time period of the on state of the backlight in each of the sub-frames to make a resulting total luminous flux in each pixel unit corresponding to a gray scale of an image to be displayed in the frame time to be the same as that of other pixel units.
摘要:
An active matrix LCD (200) includes: a plurality of scanning lines (23) that are parallel to each other and that each extend along a first direction; a plurality of signal lines (24) that are parallel to each other and that each extend along a second direction orthogonal to the first direction; a plurality of thin film transistors (TFTs) each provided in the vicinity of a respective point of intersection of the scanning lines and the signal lines; a plurality of scanning line driving circuits (21) for providing a plurality of scanning signal groups to the scanning lines, each scanning signal group including an image scanning signal and a black-inserting scanning signal; a plurality of signal line driving circuits (22) for providing gradation voltage data to the signal lines; and a plurality of black-inserting circuits (28) for providing a high voltage corresponding to black image data to the signal lines.
摘要:
An exemplary shift register system (31) includes a shift register (311), and four switches (312-315). The shift register includes input pins, output pins, a start pin, a reset pin, a first controlling pin, and a second controlling pin. Each switch includes input pins according to the output pins of the shift register, output pins, an enabling pin, and a third controlling pin. The switches are connected with each other in series through respective of the enabling and controlling pins thereof. The enabling pin of the first switch is connected to the start pin of the shift register, and the third controlling pin of the last switch is connected to the reset pin of the shift register. The output pins of the shift register are connected to the input pins of each switch through a bus line (316), and the output pins of the switches are connected to an external circuit.
摘要:
An exemplary shift register system (31) includes a counter (316), a shift register (311) and a plurality of switches (312, 313, 314, 315). The counter includes a signal receiving pin which is for connection to a first external circuit, a pulse output pin, and a number of signal output pins. The shift register includes sixty-four register units therein, sixty-four output pins, a start pin connected to the pulse output pin of the counter, a controlling pin connected to the signal receiving pin of the counter. Each switch includes sixty-four input pins connected to the output pins of the shift register through a bus line, sixty-four output pins that are for connection to a second external circuit, and an enabling pin connected to a respective one of the signal output pins of the counter. A related method for driving a shift register system, and a circuit for driving a liquid crystal display, are also provided.
摘要:
An active matrix LCD (200) includes: a plurality of scanning lines (23) that are parallel to each other and that each extend along a first direction; a plurality of signal lines (24) that are parallel to each other and that each extend along a second direction orthogonal to the first direction; a plurality of thin film transistors (TFTs) each provided in the vicinity of a respective point of intersection of the scanning lines and the signal lines; a plurality of scanning line driving circuits (21) for providing a plurality of scanning signal groups to the scanning lines, each scanning signal group including an image scanning signal and a black-inserting scanning signal; a plurality of signal line driving circuits (22) for providing gradation voltage data to the signal lines; and a black-inserting circuit (28) for providing black-inserting signals corresponding to black image data to the signal lines.
摘要:
A hybrid latch flip-flop is applied to an LCD. The hybrid latch flip-flop includes a negative pulse generation unit, a latch flip-flop, and a buffer unit. The latch flip-flop includes a sampling unit and a hold unit. One feature of the present invention is that fewer transistors are employed in the hybrid latch flip-flop, which gives rise to low power consumption. Another feature of the present invention is that, by employing the negative pulse generation unit of a double edge trigger type, the data processing capacity of the hybrid latch flip-flop is doubled without changing the clock frequency.
摘要:
An in-plane switching (IPS) liquid crystal display device (100) includes pixel units each having a storage capacitor. The storage capacitor is formed by a common electrode (112), a drain electrode (103), and a counter electrode (110). The common electrode is electrically coupled with the counter electrode. The counter electrode substantially covers the drain electrode, for shielding unexpected coupling effects on the drain electrode due to data signals on a data line (101) driving other pixels of the liquid crystal display device.
摘要:
An LTPS (low temperature poly-silicon) display panel includes a display area and a pair of driving circuit areas. The display area is fabricated by cutting from a display substrate. The driving circuit areas are fabricated by cutting from an insulated substrate having a poly-silicon film thereon. The driving circuit areas are electrically connected with the display area. This approach reduces the impediment to uniformity that is caused by various different processes, and thus improves the yield rate and reduces production costs.