摘要:
A transflective liquid crystal panel includes a first substrate, a second substrate, a liquid crystal layer sandwiched between the two substrates, color filter film, transparent units, reflective units, and a solid color film. The color filter film is disposed on a surface of the first substrate adjacent to the liquid crystal layer. The color filter film includes filter units. The transparent units are configured for transmitting light. The reflective units are configured for reflecting light. Each filter unit corresponds to a transparent unit and a reflective unit. The solid color film covers at least the transparent units. A permeability of the solid color film relative to a predetermined color light waves exceeds that relative to light waves of other colors.
摘要:
An exemplary flat panel display (1) includes a main body (10), a neck (11), and a base (12). The main body includes a chassis (17). The neck is connected with the chassis by a first pivot structure such that the main body can be rotated back and forth about a substantially horizontal axis. The base is connected with the neck by a second pivot structure such that the neck can be rotated left and right about a substantially vertical axis.
摘要:
An exemplary switching power supply circuit includes a transformer, a switching control circuit, a DC-DC converter, and a signal selecting circuit. The transformer converts a DC voltage into a first DC voltage and a second DC voltage. The switching control circuit controls a current flowing on the transformer for generating the first DC voltage and the second DC voltage. The DC-DC converter converts the first DC voltage or the second DC voltage into a third DC voltage. The signal selecting circuit selects the first DC voltage or the second DC voltage for the DC-DC converter to generate the third DC voltage.
摘要:
An exemplary DC to DC converter includes a first transistor, a second transistor, a transformer, and a pulse generating circuit having a first capacitor, a sampling resistor, a zener diode, and a first diode. A DC voltage input terminal is configured for receiving a first DC voltage and is grounded via the primary winding of the transformer, a collector electrode and an emitter electrode of the first transistor in series. A terminal of the auxiliary winding of the transformer is grounded via the inverted first diode, the non-inverted zener diode, the sampling resistor, and the first capacitor. The other terminal of the auxiliary winding is grounded. A first transistor having a base electrode connected to the DC voltage input terminal. A second transistor includes an emitter electrode a cathode of the zener diode, a collector electrode connected to a base electrode of the first transistor, and a grounded base electrode.
摘要:
A flat panel display includes a data interface, a scaler control circuit, and a pulse generator configured to provide an external pulse signal to the scaler control circuit. The data interface is configured to receive an image signal including a vertical synchronization pulse signal and a horizontal synchronization pulse signal. The scaler control circuit is configured to determine a vertical resolution of the image signal by counting a number of pulses of the external pulse signal respectively between two adjacent vertical synchronization pulses and between two adjacent horizontal synchronization pulses. A method for detecting a resolution of an image signal received by the flat panel display is also provided.
摘要:
An exemplary power supply circuit includes an output terminal configured for providing electric power to a load circuit, a direct current (DC) power supply, a first resistor, a second resistor, a first switch and a second switch. The first switch includes a control electrode is grounded via the first resistor, a first current conducting electrode is connected to the DC power supply, and a second current conducting electrode is connected to the output terminal. The second switch includes a control electrode is connected to the output terminal, a first current conducting electrode is connected to the DC power supply, and a second current conducting electrode is connected to the control electrode of the first switch. The second resistor is interconnected the first current conducting electrode of the first switch and the second current conducting electrode of the first switch.
摘要:
An exemplary liquid crystal display device includes scanning lines (201), data lines (202), and a control circuit (200). The control circuit includes a data driver (230), a scanning driver (220), and a DC/DC converter (260). The DC/DC converter includes a reference voltage output terminal (262), a high voltage output terminal (263), a low voltage output terminal (264), a first adjusting circuit connected to the reference voltage output terminal, a second adjusting circuit connected to the high voltage output terminal and a third adjusting circuit connected to low voltage output terminal. The first adjusting circuit includes a first terminal. The second adjusting circuit includes a second terminal. The third adjusting circuit includes a third terminal. Three voltages of the three output terminals are determined by three voltages of the three terminals of the three adjusting circuits.
摘要:
An exemplary external electrode fluorescent lamp includes a fluorescent tube having two electrodes fixed at two ends thereof, and two inner caps respectively holding the electrodes. Each inner cap includes an electrode receiving portion configured for receiving the electrode, a conductive layer provided at inner surfaces of the electrode receiving portion, a lead receiving portion integrally formed with the electrode receiving portion, and a conductive lead received in the lead receiving portion. The conductive layer contacts the conductive layer. A backlight module employing the external electrode fluorescent lamp is also provided.