Abstract:
The present disclosure provides a detection circuit and a detection method. The detection circuit used for detecting an electrostatic discharge (ESD) protective device that is inversely soldered, the ESD protective device includes a first diode, a second diode, and a third diode; the cathodes of the first diode, the second diode and the third diode are mutually connected, and an anode of the third diode is coupled to a ground terminal of the circuit by a divider resistor. The detection circuit includes a comparator. The comparator is configured with a first input end connected to the reference voltage and a second input end coupled to the anode of the third diode, and an output end of the comparator is coupled to a warning device.
Abstract:
A wiring structure of a wiring area on a liquid crystal displaying panel includes a number of wiring lines connected to one end of a corresponding data line and corresponding scan line on the wiring area, at least one signal testing point, a number of first testing lines connected between the wiring lines and the signal testing point, a number of second testing lines connected between the signal testing point and the other end of the corresponding data line and the corresponding scan line, and a switch controlling circuit connected to the second testing lines. After the testing lines are disconnected from the wiring lines in the previous process, the testing signal still can be transmitted through the other end of the corresponding data line or the scan line, to implement the image test of the liquid crystal displaying panel.
Abstract:
A TFT array substrate includes a pixel region and a wiring region disposed outside the pixel region. The wiring region has a wiring layer including scan or data wirings. A repair wiring layer including repair wiring is disposed insulatedly below or above the wiring layer. A scan or data wiring has a first intersection and a second intersection with a repair wiring section of the repair wiring. When the scan or data wiring is broken, a repair wiring section is cut off the repair wiring by a first cut-off point and a second cut-off point, and the broken scan or data wiring is electrically connected to the repair wiring section through soldering the first intersection and the second intersection. Thus, products that would otherwise be rejected in the manufacturing process of LCD panels can be repaired, which decreases the reject ratio, increases the yield and saves the production cost.
Abstract:
The present invention discloses a liquid crystal panel, which, in shorting bar area, connects scan signal line to scan signal test point through a first switch, connects data signal line to data signal test point through a first unidirectional circuit or a second switch, and connects common electrode to common electrode test point through conductive wire. The present invention also discloses a liquid crystal module and a method of determining reason behind bad display for liquid crystal module. With the method, the liquid crystal panel of the present invention can realize to spare the cutting of test leads of shorting bar area and cutting facility used in cell process.
Abstract:
A liquid crystal coating apparatus includes a liquid crystal spraying head for coating a liquid crystal material on a color filter (CF) substrate with a sealant to allow the liquid crystal material to be coated within an area surrounded by the sealant; and a supporting stage for accommodating and fixing the CF substrate. The supporting stage is provided with a vibrating mechanism for driving the CF substrate to mechanically vibrate continuously so that the liquid crystal material can become uniformly diffused quickly. In the present disclosure, the vibrating mechanism is activated after coating of the liquid crystal material is completed to drive the CF substrate to mechanically vibrate continuously; and is deactivated once the liquid crystal material is diffused uniformly. Therefore, the liquid crystal material can become uniformly diffused quickly, which guarantees the displaying performance of the final products and improves the production efficiency.
Abstract:
A liquid crystal display (LCD), an array substrate of the LCD and a method for repairing a broken line are disclosed. According to the present disclosure, a detection line and a repairing line are disposed on an array substrate of the LCD, the detection line is connected to a non-defective scan line and the repairing line is connected to a broken line; and when a scan signal is detected by the repairing IC via the detection line, a repairing signal is outputted at an appropriate time to repair the broken line via the repairing line. With this arrangement of the LCD and the method for repairing a broken line of the present disclosure, broken scan lines that are detected in the LCD after the cell process can still be repaired. This reduces the reject ratio, avoids unnecessary waste and lowers the manufacturing cost.
Abstract:
The present invention discloses a TFT-LCD array substrate comprising a display area comprising a plurality of data lines and a plurality of gate lines; a peripheral area located at a periphery of the display area and provided with a first test short bar provided with a plurality of data test lines for transmitting a test signal for the data lines in the display area, and a second test short bar provided with a gate test line for transmitting a test signal for the gate lines in the display area; and a connecting device comprising a first connection layer and a second connection and provided at a connection location between one of the data test lines in the first test short bar and one of the data lines in the display area, or provided at a connection location between the gate test line in the second test short bar and one of the gate lines in the display area. The present invention also provides a corresponding test method. The present invention can achieve testing the TFT-LCD array substrate twice.
Abstract:
The present invention provides an apparatus for detecting the abnormal soldering of an electrostatic discharge protection chip, comprising a connector, which is used for pluggable connection with a signal input terminal connector of an application specific integrated circuit chip (ASIC) of a liquid crystal display; a detecting circuit, which is set on the connector, used to detect if the electrostatic discharge protection chip is properly soldered on the ASIC and prompt when the abnormal soldering of the electrostatic discharge protection chip is detected. Accordingly, the present invention also provides a method for detecting the abnormal soldering of an electrostatic discharge protection chip. According to the present invention, the abnormal soldering of an electrostatic discharge protection chip can be detected quickly with high accuracy, which can save the cost of manpower and resources, as well as to reduce the loss resulted from the defective rate of the finished product assembly.
Abstract:
The present invention discloses a backlight module and an LCD device, comprising: a backplane and an LGP; the edge(s) of the LGP is provided with lug boss(es), each lug boss is provided with a positioning hole, and the backplane is provided with rivet(s) for matching with the positioning hole; a buffer structure is arranged between the rivet and the wall of the positioning hole. In the present invention, because the edge(s) of the LGP is provided with lug boss(es), each lug boss is provided with a positioning hole, the arrangement of the positioning hole does not influence the light guide area of the LGP; meanwhile, because a layer of buffer structure is arranged between the positioning hole and the rivet, the rupture of the part with concentrated stress in the positioning hole during collision is avoided. In addition, when the LGP is expanded with heat, the buffer structure can also avoid the extrusion damage caused by direct extrusion between the LGP and the rivet; when the LGP is contracted with cold, the gap between the LGP and the rivet is increased so that shake is easily caused. The gap between the LGP and the rivet is automatically filled by a buffer part through the elastic regulation of the buffer part. Thus, the shake collision of the LGP is avoided.
Abstract:
The present invention discloses a debris collection device for cutting mechanism and an LCD panel cutting debris suction device. A debris collection device for cutting mechanism, wherein the debris collection device comprises a collection cap positioned behind the traveling direction of the cutting mechanism, and an air spray head positioned in front of the traveling direction of the cutting mechanism. The present invention can clear the debris produced in the LCD panel cutting process in time, and can reduce relevant defects such as line scratches, terminal scratches, short circuit, broken circuit, etc. which are generated because of debris. Thus, the yield and quality of products can be improved; the time of the subsequent cleaning process can be reduced; and the purposes of reducing risk, improving product yield and saving production cost can be achieved.