摘要:
An LCD device is configured to drive a plurality of shift register units using two clock signals having different driving abilities. Each shift register unit may thus generate a stronger signal for triggering a next-stage shift register unit, thereby improving cold-start. When the LCD device has been activated over a predetermined period of time, the driving ability of the clock signal having higher driving ability is gradually lowered, thereby reducing power consumption.
摘要:
An exemplary shift register circuit includes a plurality of shift registers for sequentially outputting a plurality of driving pulse signals. Among each M number of the shift registers for sequentially outputting M number of the driving pulse signals, the shift register for lastly outputting one of the M number of driving pulse signals is enabled, by (M−1) number of start pulse signals sequentially outputted from the remained (M−1) number of the shift registers, to generate the driving pulse signal. Herein, M is a positive integer greater than 2. Moreover, a circuit structure of a shift register also is provided.
摘要:
A shift register apparatus is provided. The pull-down unit of each of the shift registers in the shift register apparatus is controlled by itself, previous, and next two shift registers to enhance the ability of pull-down and voltage regulating. Therefore, the circuit structure of each of the shift registers does not need to be designed a large compensation capacitor therein to substantially restrain the coupling noise effect caused by the clock signal, and thus permitting that each of the shift registers can be collocated with a small compensation capacitor to enhance the output capability thereof.
摘要:
A shift register apparatus is provided. The pull-down unit of each of the shift registers in the shift register apparatus is controlled by itself, previous, and next two shift registers to enhance the ability of pull-down and voltage regulating. Therefore, the circuit structure of each of the shift registers does not need to be designed a large compensation capacitor therein to substantially restrain the coupling noise effect caused by the clock signal, and thus permitting that each of the shift registers can be collocated with a small compensation capacitor to enhance the output capability thereof.
摘要:
An LCD device is configured to drive a plurality of shift register units using two clock signals having different driving abilities. Each shift register unit may thus generate a stronger signal for triggering a next-stage shift register unit, thereby improving cold-start. When the LCD device has been activated over a predetermined period of time, the driving ability of the clock signal having higher driving ability is gradually lowered, thereby reducing power consumption.
摘要:
By way of enabling a reset signal while turning off a liquid crystal display, a method for decaying residual image of the liquid crystal display is capable of setting the corresponding gate signal of each of a plurality of gate lines of the liquid crystal display based on the enabled reset signal. Accordingly, enhanced discharging processes on all the storage units of the liquid crystal display for fast decaying residual image can be performed via the data switches of the liquid crystal display turned on by the gate signals being set. The reset operation for performing discharging processes in response to the reset signal can be carried out based on a reset circuit for setting all the gate signals to become high-level signals, or based on a charging/discharging module for furnishing a high-level voltage directly to all the gate lines.
摘要:
The present invention relates to a pull-down control circuit and a shift register of using same. In one embodiment, the pull-down control circuit includes a release circuit and four transistors T4, T5, T6 and T7 electrically coupled to each other. The release circuit is adapted for causing the transistor T5 to be turned on and off alternately, thereby substantially reducing the stress thereon, improving the reliability and prolonging the lifetime of the shift register.
摘要:
An LCD device includes a plurality of gate lines and a plurality of shift register units for driving corresponding gate lines. Each shift register unit includes a first circuit and a second circuit. The first circuit, disposed on a first side of a corresponding gate line, includes a pulse generator and a first transistor having a first W/L ratio. The pulse generator provides a driving signal according to the voltage obtained at a node, while the first transistor maintains the voltage level of the node. The second circuit, disposed on a second side of the corresponding gate line, includes a second transistor having a second W/L ratio. The second transistor maintains the voltage level of the driving signal from the second side of the corresponding gate line. The first W/L ratio is smaller than the second W/L ratio, and the first circuit occupies larger space than the second circuit.
摘要:
A liquid crystal display includes a source driver, for generating a pixel data voltage, a gate driver, for generating a scanning signal voltage, and a plurality of pixel units. Each pixel unit includes a switch unit for delivering the pixel data voltage upon receiving the scanning signal voltage, a pixel electrode electrically coupled to the switch unit, a first electrode for supplying a first common voltage, a second electrode for supplying a second common voltage, a liquid crystal capacitor electrically coupled between the first electrode and the pixel electrode for driving liquid crystal layer in response to the pixel data voltage and the first common voltage, and a storage capacitor electrically coupled between the pixel electrode and the second electrode.
摘要:
A display including a display panel and a compensation circuit is provided. The display panel includes a plurality of common lines for transmitting a common voltage; a plurality of scan lines; a plurality of data lines disposed substantially perpendicular to the scan lines; a plurality of pixels arranged in an array and each electrically connected to the corresponding data line, scan line, and common line; and a sensing line crossing over at least one first data line among the data lines. A parasitic capacitor is formed between the first data line and the sensing line. The compensation circuit is electrically connected to the sensing line and the common lines. The compensation circuit generates a compensation signal for the common lines according to a coupling signal induced by the parasitic capacitor between the first data line and the sensing line so as to restrain ripple of the common voltage.