Abstract: The present disclosure relates to the technical field of pyrolysis and improvement of caking middling coals, in particular to a low temperature pyrolysis method of a caking middling coal. The present disclosure provides a low temperature pyrolysis method of a caking middling coal, including the following steps: conveying the caking middling coal into a pyrolysis reactor through a top of the pyrolysis reactor; dividing a reaction chamber of the pyrolysis reactor into a drying section, a softening section, a melting and depolymerization section, a solidification section, and a cooling section by means of multi-channel gas distribution; and conducting zoned temperature control-based pyrolysis to obtain semi-coke at a bottom of the reactor as well as tar and coal gas at the top of the reactor. The pyrolysis method can well avoid caking and swelling of the caking middling coal during pyrolysis.

Abstract: Provided is an automated system for preparing purified plasmid DNA in commercial scale.

Abstract: A driving circuit that includes a timing controller, a selecting module connected to the timing controller, and a level shifter connected to the selecting module, wherein the timing controller includes N pins, each of the pins provides a clock signal, and N is a positive integer; the selecting module includes N selecting units, an input terminal of each of the selecting units is connected to a corresponding pin of the timing controller, output terminals of each of the selecting units are connected to M input pins of the level shifter, and M is greater than or equal to 2. The driving circuit according to the present invention individually passes clock signals of a timing controller through selecting units and outputs to a level shifter, and pins of the timing controller can be substantially saved.

Abstract: In a display device, transistors are disposed on a display panel. When the display panel has a short-circuit, the timing controller sends a signal to the level shifter to disconnect the transistors, causing the display panel to no longer receive scanning signals transmitted from GOA circuits, causing the display panel enter an overcurrent protection state, and thus preventing GOA wirings in the display panel from burning out in an event of the short-circuit.

Abstract: In a display device, transistors are disposed on a display panel. When the display panel has a short-circuit, the timing controller sends a signal to the level shifter to disconnect the transistors, causing the display panel to no longer receive scanning signals transmitted from GOA circuits, causing the display panel enter an overcurrent protection state, and thus preventing GOA wirings in the display panel from burning out in an event of the short-circuit.

Abstract: A driving circuit that includes a timing controller, a selecting module connected to the timing controller, and a level shifter connected to the selecting module, wherein the timing controller includes N pins, each of the pins provides a clock signal, and N is a positive integer; the selecting module includes N selecting units, an input terminal of each of the selecting units is connected to a corresponding pin of the timing controller, output terminals of each of the selecting units are connected to M input pins of the level shifter, and M is greater than or equal to 2. The driving circuit according to the present invention individually passes clock signals of a timing controller through selecting units and outputs to a level shifter, and pins of the timing controller can be substantially saved.

Abstract: A display device and an electronic device are provided. The display device is provided with a control unit between a driving chip and an electrostatic test point. During an electrostatic test, the control unit is disconnected from the driving chip to form a protection circuit for the driving chip under control of a first control signal and a second control signal, which can effectively prevent the driving chip from damage by static electricity.

Abstract: A display device is provided. The display device includes a display panel and a driver circuit, in which the driver circuit includes: a data driving chip, a control chip, and a control unit. The control unit receives a common electrode voltage and is electrically connected to the control chip and a plurality of data signal output ends of the data driving chip. The control unit is configured to output the common electrode voltage to the plurality of data signal output ends under a control of a control signal outputted by the control chip when the display device is powered off.

Abstract: A display device and an electronic device are provided. The display device is provided with a control unit between a driving chip and an electrostatic test point. During an electrostatic test, the control unit is disconnected from the driving chip to form a protection circuit for the driving chip under control of a first control signal and a second control signal, which can effectively prevent the driving chip from damage by static electricity.

Abstract: A display panel, including a gate array substrate; a first flexible circuit board connected to the gate array substrate; a printed-circuit board connected to the first flexible circuit board, and provided with a central control board, wherein the central control board outputs a gate array driving signal; a second flexible circuit board disposed on a side edge of the gate array substrate; and a level shifter provided on the second flexible circuit board and connected to the central control board, wherein the level shifter is configured to raise the gate array driving signal, thereby achieving reduction in panel manufacturing costs, improving panel design flexibility, and controlling a scanning direction of the gate drive circuit.

Abstract: The chip on film assembly provided in the present disclosure comprises a substrate which includes a first auxiliary area, a second auxiliary area, and a chip on film area. The first auxiliary area, the chip on film area, and the second auxiliary area are disposed in sequence along a first direction. A plurality of signal wirings are disposed on one side of the chip on film area adjacent to the first auxiliary area and one side of the chip on film area that is adjacent to the second auxiliary area; the first auxiliary area and the second auxiliary area are used to prevent the signal wirings from breaking.

Abstract: The disclosure provides a display device, including a display panel, a flexible circuit board (FCB), a printed circuit board (PCB), and a source driver chip. The PCB is connected to the display panel by the FCB, the source driver chip is bonded to a front side of the PCB, and an exposed copper area is disposed on a backside of the PCB corresponding to the source driver chip. Therefore, heat dissipation effect of a chip is improved, production costs are reduced, and working stability of products is ensured.

Abstract: The present invention provides a source driver. The source driver includes an output terminal. The output terminal includes multiple effective output terminals and multiple dummy terminals. The effective output terminals constitute multiple effective output terminal groups. The dummy terminals constitute multiple dummy terminal groups. The effective output terminal groups are spaced apart by the dummy terminal groups. In the source driver of the present invention, the source outputs are divided into groups by setting virtual terminals, so that an electro-magnetic interference (EMI) test can be passed, and waste can be avoided.

Abstract: A display device includes a display panel and a chip-on-film connected to the display panel. The display panel includes a display area, a non-display area surrounding the display area, and a plurality of data lines interval disposed in the display area, wherein the chip-on-film includes a source driving chip and a plurality of fan-out traces, ends of the plurality of fan-out traces are connected to the source driving chip, and other ends of the plurality of fan-out traces are respectively connected to the plurality of data lines in a one-to-one correspondence. A plurality of fan-out traces form a sector-shaped area, which is equivalent to setting the fan-out area of conventional art on the chip-on-film, so that the portion of the non-display area of display panels near the chip-on-film can be made narrower to achieve an ultra-narrow bezel of the display panel.

Abstract: The disclosure provides a display device, including a display panel, a flexible circuit board (FCB), a printed circuit board (PCB), and a source driver chip. The PCB is connected to the display panel by the FCB, the source driver chip is bonded to a front side of the PCB, and an exposed copper area is disposed on a backside of the PCB corresponding to the source driver chip. Therefore, heat dissipation effect of a chip is improved, production costs are reduced, and working stability of products is ensured.

Abstract: The present application provides a chip on film and a display device, the chip on film including a plurality of first source signal lines located at a middle, and a plurality of second source signal lines located at opposite sides, wherein each of the first source signal lines has a cross-sectional area smaller than a cross-sectional area of each of the second source signal lines in a reference plane. Based on the structure, attenuation from the source driver chip to each data lines is substantially the same or even completely the same.

Abstract: The present application provides a chip on film and a display device, the chip on film including a plurality of first source signal lines located at a middle, and a plurality of second source signal lines located at opposite sides, wherein each of the first source signal lines has a cross-sectional area smaller than a cross-sectional area of each of the second source signal lines in a reference plane. Based on the structure, attenuation from the source driver chip to each data lines is substantially the same or even completely the same.

Abstract: The present disclosure provides a circuit for solving electromagnetic interference signal including a source driving chip, a plurality of first switching units, and a delay control unit. The source driving chip includes a plurality of the output passageway connected to a corresponding row of pixel electrodes in a glass substrate through the data lines and configured to output a charging signal in order to charge the pixel electrodes. The first switch units are correspondingly disposed on each output passageways and connected to the corresponding delay control unit to control the output passageways provided with the first switching units to output the charging signal at a predetermined delay time according to a delay control signal generated by the delay control unit. The connection between the delay control unit and the internal of the source driving chip can reduce manufacturing costs and electromagnetic interference of the display panel circuit.

Abstract: The present invention provides a driving circuit and a display panel to which it is applied. The driving circuit applied to the display panel includes: a timing controller, a level shifter connected to the timing controller and including a first switch group, an operational amplifier connected to the first switch group, and a second switch group connected to the operational amplifier.

Abstract: A display device and a driving method are provided. The display device includes a display panel, having a multiple multiplex module and data lines connected to the multiple multiplex module, and a flip-chip film connected to the display panel. The multiple multiplex module includes switching thin-film transistors corresponding to data lines. For each switching thin-film transistor (TFT), a source electrode is connected to the flip-chip film, a drain electrode is connected to a data line, and a gate electrode receives a switching control signal. Switching TFTs are divided into switching TFT groups every M switching TFTs (M is a positive integer not less than 2). A switching TFT group receives a switching control signal, and switching control signals corresponding to switching TFT groups are different. The data lines are controlled to accomplish time-sharing multiplex flip-chip films. A number of flip-chip films is saved, and manufacturing costs are reduced.