摘要:
A light module includes a plurality of light sources for generating light, a power controller, a bridge converter, a first piezoelectric transformer, a second piezoelectric transformer, a resonance balance circuit, and a protection circuit. The power controller is used for generating a power driving signal based on a control signal. The bridge converter is used for generating a supply voltage signal based on the power driving signal. The first piezoelectric transformer is used for transforming the supply voltage signal into a first driving voltage signal to a first end of each of the plurality of lamps. The second piezoelectric transformer is used for transforming the supply voltage signal into a second driving voltage signal to a second end of each of the plurality of lamps. The resonance balance circuit includes a primary winding coupled to the first and the second piezoelectric transformers, and a secondary winding for outputting a feedback signal in response to a current flowing through the primary winding. The protection circuit is coupled to the secondary winding of the resonance balance circuit, and is used for generating the control signal based on the feedback signal.
摘要:
A matrix sensing apparatus with architecture having reduced quantity of required sensing lines is disclosed. The matrix sensing apparatus includes a plurality of driving lines, a plurality of sensing lines and a matrix sensing region. The matrix sensing region includes a plurality of sensing areas. Each sensing area includes a first transistor, a second transistor, and a sensing unit for generating a sensing signal. The first transistor is coupled to the sensing unit and a corresponding sensing line. The second transistor is coupled to the first transistor, a first corresponding driving line and a second corresponding driving line. The first transistor together with the second transistor functions to control the signal connection between the sensing unit and the corresponding sensing line based on the driving signals of the first and second corresponding driving lines.
摘要:
A method of dynamic frame presentation improvement for liquid crystal display is disclosed. The method comprises the step of providing a gray level mapping table, which maps the signal gray levels from 0 to N into mapped gray levels from 1 to N−1 level. Thereafter, the mapped data is fed into over-voltage compensation circuit. The over-voltage compensation circuit then implements process of the gray level ascending or gray level descending while the previous frame turns into current frame with a varied gray level.
摘要:
A data line repair mechanism for a display including a data driver, a plurality of data lines, at least one rescue line is disclosed, wherein each data line includes a second end and a first end coupled to the data driver, the rescue line is coupled to the data driver, and when a first data line fails, the rescue line is coupled to the second end of the first data line via a single one weld point. The mechanism includes an address storage unit storing the addresses of the first data line and rescue line, and a data processor receiving an input data to output an output data to the data driver, wherein the input data includes a first display data corresponding to the first data line, and the first display data is transmitted to the rescue line based on the addresses of the first data line and rescue line.
摘要:
A driving circuit for a liquid crystal display. The liquid crystal display panel includes a plurality of light emitting elements and display cells. The display cells are respectively connected to a plurality of data electrodes and gate electrodes. A gate driver outputs scan signals to the gate electrodes. A data driver outputs the video signals to the data electrodes according to the image control signal, and a voltage controlling signal corresponding to a brightness adjustment signal. A driving voltage generator outputs a driving voltage to the light emitting elements according to the voltage controlling signal.
摘要:
A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.
摘要:
A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.
摘要:
A light module includes a plurality of light sources for generating light, a power controller, a bridge converter, a first piezoelectric transformer, a second piezoelectric transformer, a resonance balance circuit, and a protection circuit. The power controller is used for generating a power driving signal based on a control signal. The bridge converter is used for generating a supply voltage signal based on the power driving signal. The first piezoelectric transformer is used for transforming the supply voltage signal into a first driving voltage signal to a first end of each of the plurality of lamps. The second piezoelectric transformer is used for transforming the supply voltage signal into a second driving voltage signal to a second end of each of the plurality of lamps. The resonance balance circuit includes a primary winding coupled to the first and the second piezoelectric transformers, and a secondary winding for outputting a feedback signal in response to a current flowing through the primary winding. The protection circuit is coupled to the secondary winding of the resonance balance circuit, and is used for generating the control signal based on the feedback signal.
摘要:
A driving circuit for a liquid crystal display. The liquid crystal display panel includes a plurality of light emitting elements and display cells. The display cells are respectively connected to a plurality of data electrodes and gate electrodes. A gate driver outputs scan signals to the gate electrodes. A data driver outputs the video signals to the data electrodes according to the image control signal, and a voltage controlling signal corresponding to a brightness adjustment signal. A driving voltage generator outputs a driving voltage to the light emitting elements according to the voltage controlling signal.
摘要:
A method of dynamic frame presentation improvement for liquid crystal display is disclosed. The method comprises the step of providing a gray level mapping table, which maps the signal gray levels from 0 to N into mapped gray levels from 1 to N−1 level. Thereafter, the mapped data is fed into over-voltage compensation circuit. The over-voltage compensation circuit then implements process of the gray level ascending or gray level descending while the previous frame turns into current frame with a varied gray level.