Abstract: A temperature control circuit of a driver chip, a temperature control method of the driver chip, a power management integrated chip, a timing control driver board and a display apparatus are disclosed. The temperature control circuit includes a switching transistor, a comparison circuit and a control circuit; a first electrode of the switching transistor is connected with a first node, a second comparison end and the first electrode or a second electrode of the switching transistor are connected to a second node; the control circuit is configured to output a first reference voltage to the comparison circuit, the comparison circuit is configured to compare a magnitude relationship between a voltage on the second comparison end and the first reference voltage and output a comparison result: the control circuit acquires the comparison result and determines whether an output current on the boost circuit is excessively large.

Abstract: A method for calculating flexural capacity of a steel plate-reinforced joint in shield tunnel includes: (S1) obtaining a construction parameter, a material parameter, and a mechanical parameter of a joint surface; and calculating a virtual strain ?sp,0a height xcb1 of a critical compression zone for bolt yielding in case of section failure, and a height xcb1 of a critical compression zone for steel plate yielding; (S2) calculating a height xc of a compression zone of a joint surface of the steel plate-reinforced joint in a certain failure state; (S3) determining whether xc satisfies a range requirement: if so, executing step (S4); and if no, replacing a new failure state; and skipping to step (S2) until traversing all failure states; and (S4) substituting xc into a bending moment equilibrium equation for the current failure state; and calculating an ultimate bending moment. A computer-readable storage medium is further provided.

Abstract: The present invention discloses a Gamma voltage driving circuit, which comprises a voltage dividing resistor string, which comprises 2n resistors connected in series sequentially, used to divide a reference voltage into 2n Gamma voltages; wherein, n is an integer not less than 1; a reference voltage module, which provides the reference voltage for the voltage dividing resistor string; a voltage selecting module, which is used to selectively output one of the 2n Gamma voltages.

Abstract: The present invention provides a power system and controlling method thereof. The power system includes: pulse width modulation (PWM) power source, voltage detection unit, current detection unit and feedback signal generation unit. PWM power source receives external DC input, performs PWM on received external DC input, and supplies PWM output obtained through PWM from the DC output terminal to a device expecting power supply. Voltage detection unit detects voltage amplitude of PWM output. Current detection unit detects current amplitude of PWM output. Feedback signal generation unit generates feedback signal and supplies generated feedback signal to PWM power source. PWM power source adjusts the voltage amplitude and current amplitude of the PWM output based on the received feedback signal.

Abstract: An LCD panel and an LCD device are proposed. The LCD panel includes display pixels, a data line, a scan line, and thin-film transistors. The display pixels include a first display pixel and a second display pixel. The liquid crystal display panel displays black images through the second display pixel while displaying signal images through the first display pixel. The FPR liquid crystal display panel and the liquid crystal display device for 3D display in the present invention prevent from crosstalk between the left-eye signal image and the right-eye signal image by inputting a black image signal to partial pixels.

Abstract: The present invention discloses a Gamma voltage driving circuit, which comprises a voltage dividing resistor string, which comprises 2n resistors connected in series sequentially, used to divide a reference voltage into 2n Gamma voltages; wherein, n is an integer not less than 1; a reference voltage module, which provides the reference voltage for the voltage dividing resistor string; a voltage selecting module, which is used to selectively output one of the 2n Gamma voltages.

Abstract: A DC/DC module comprises a buck-boost circuit, which is used to convert the input voltage of the DC/DC module into a gate off-state voltage VGL; a LDO circuit, which is used to convert the input voltage of the buck-boost circuit into a lower limit output voltage VBB of a liquid crystal driver; a BUCK circuit, which is used to convert the input voltage of the DC/DC module into an operating voltage VDD of a specific IC; a charge pump circuit, which is used to convert the input voltage of the DC/DC module into a gate on-state voltage VGH; wherein, the input voltage of the DC/DC module is used directly as an upper limit output voltage VAA. The DC/DC module according to the present invention has simple circuit structure, low hardware cost, and high load capacity.

Abstract: The present invention provides a power system and controlling method thereof. The power system includes: pulse width modulation (PWM) power source, voltage detection unit, current detection unit and feedback signal generation unit. PWM power source receives external DC input, performs PWM on received external DC input, and supplies PWM output obtained through PWM from the DC output terminal to a device expecting power supply. Voltage detection unit detects voltage amplitude of PWM output. Current detection unit detects current amplitude of PWM output. Feedback signal generation unit generates feedback signal and supplies generated feedback signal to PWM power source. PWM power source adjusts the voltage amplitude and current amplitude of the PWM output based on the received feedback signal.

Abstract: The present invention provides a DC/DC module of a LCD driving circuit. The DC/DC module comprises a buck-boost circuit, which is used to convert the input voltage of the DC/DC module into a gate off-state voltage VGL; a LDO circuit, which is connected in series to the buck-boost circuit, used to convert the input voltage of the buck-boost circuit into a lower limit output voltage VBB of a liquid crystal driver; a BUCK circuit, which is used to convert the input voltage of the DC/DC module into a operating voltage VDD of a specific IC; a charge pump circuit, which is used to convert the input voltage of the DC/DC module into a gate on-state voltage VGH; wherein, the input voltage of the DC/DC module is used directly as an upper limit output voltage VAA of the liquid crystal driver. The DC/DC module according to the present invention has simple circuit structure, low hardware cost, and high load capacity.

Abstract: The present invention provides a driving device for controlling polarity reversal for liquid crystal display panel, which includes a timing control circuit, for adding a polarity reversal control bit to image data, and generating image data of mini-LVDS format according to predefined mini-LVDS format protocol; and a panel driving circuit, for receiving image data of the control information of mini-LVDS format from the timing control circuit, and separating the polarity reversal control bit and the image data of the pixels from the received image data of mini-LVDS format.

Abstract: The present invention provides a drive system for liquid crystal display device, which includes timing controller, providing timing control signal; source driver, connected to a plurality of data lines S1 to Sn of LCD to drive data lines S1 to Sn according to timing control signal provided by timing controller; gate driver, connected to a plurality of gate lines G1 to Gm of LCD to drive gate lines G1 to Gm according to timing control signal provided by timing controller, m and n being integers greater than 1; wherein timing controller storing data for generating pixel grayscale reference voltage, source driver including pixel grayscale reference voltage generation unit, pixel grayscale reference voltage generation unit receiving data for generating pixel grayscale reference voltage from timing controller to generate pixel grayscale reference voltage. As such, the present invention eliminates P-Gamma calibration circuit, simplifies LCD design and reduces cost.