Abstract: A first pixel circuit and a second pixel circuit are connected to a first data signal line. A third pixel circuit and a fourth pixel circuit are connected to a second data signal line. The first data signal line is connected to a first connection wire provided to a frame region. The second data signal line is connected to a second connection wire provided to the frame region. A sum of resistance values of the first data signal line and the first connection wire is smaller than a sum of resistance values of the second data signal line and the second connection wire.

Abstract: Provided is a display device with pixel circuits, each including first compensation transistor connected to a control terminal of a drive transistor at one conductive terminal, an intermediate node at another conductive terminal, and a scanning line at a control terminal, a second compensation transistor connected to the intermediate node at one conductive terminal, a conductive terminal of the drive transistor at another conductive terminal, and the scanning line at a control terminal, and a capacitor connected to the intermediate node at one electrode and a control line at another electrode. The driver circuit changes a potential of the scanning line from on to off level and also changes a potential of the control line from a second level to a first level, in an opposite direction to the change in the potential thereof.

Abstract: From a back side of an insulating substrate 90, a laser beam is applied to a spot where an initialization line Vini is superimposed on the semiconductor layer SI that serves as a first conductive terminal of a second initialization transistor T7 while sandwiching an insulating film therebetween. Thus, a gate insulating film 91 and a first interlayer insulating film 92, which are sandwiched between the semiconductor layer SI and the initialization line Vini, disappear by evaporation, and a laser irradiation area LA of the semiconductor layer SI is connected to the initialization line Vini, by which a connection portion CP is formed. As a result, a voltage to be applied to the organic EL element OLED becomes equal to or less than a threshold voltage. Therefore, the organic EL element OLED is constantly in a lighting-off state, and the pixel circuit 11 is constantly kept black.

Abstract: Provided is a display device with pixel circuits, each having a light-emitting element, a drive transistor, a first compensation transistor connected to a control terminal of the drive transistor at a first conductive terminal, an intermediate node at a second conductive terminal, and a scanning line at a control terminal, a second compensation transistor connected to the intermediate node at a first conductive terminal, a conductive terminal of the drive transistor at a second conductive terminal, and the scanning line at a control terminal, and a capacitor connected to the intermediate node at a first electrode and a control line at a second electrode. The driver circuit changes a potential of the scanning line from on to off level and also changes a potential of the control line from a second level to a first level, in an opposite direction to the change in the potential of the scanning line, at a time corresponding to the change in the potential of the scanning line.

Abstract: Provided is a method for manufacturing a display device that allows easy and reliable repair of a pixel circuit by converting the pixel circuit into a black dot, and a display device. A repair wiring line configured to supply an off potential for turning a drive transistor to an off state is formed superimposed onto an impurity region of a semiconductor layer, interposed between a first compensation transistor and a second compensation transistor having a dual gate structure. The impurity region is irradiated with laser light, thereby connecting the impurity region and the repair wiring line. Then, the second compensation transistor is turned to an on state, thereby setting a potential of a node to the same potential as the off potential and turning the drive transistor to a normally-off state. As a result, a pixel circuit is converted into a black dot and thus repaired.

Abstract: A first pixel circuit and a second pixel circuit are connected to a first data signal line. A third pixel circuit and a fourth pixel circuit are connected to a second data signal line. The first data signal line is connected to a first connection wire provided to a frame region. The second data signal line is connected to a second connection wire provided to the frame region. A sum of resistance values of the first data signal line and the first connection wire is smaller than a sum of resistance values of the second data signal line and the second connection wire.

Abstract: From a back side of an insulating substrate 90, a laser beam is applied to a spot where an initialization line Vini is superimposed on the semiconductor layer SI that serves as a first conductive terminal of a second initialization transistor T7 while sandwiching an insulating film therebetween. Thus, a gate insulating film 91 and a first interlayer insulating film 92, which are sandwiched between the semiconductor layer SI and the initialization line Vini, disappear by evaporation, and a laser irradiation area LA of the semiconductor layer SI is connected to the initialization line Vini, by which a connection portion CP is formed. As a result, a voltage to be applied to the organic EL element OLED becomes equal to or less than a threshold voltage. Therefore, the organic EL element OLED is constantly in a lighting-off state, and the pixel circuit 11 is constantly kept black.

Abstract: Provided is a method for manufacturing a display device that allows easy and reliable repair of a pixel circuit by converting the pixel circuit into a black dot, and a display device. A repair wiring line configured to supply an off potential for turning a drive transistor to an off state is formed superimposed onto an impurity region of a semiconductor layer, interposed between a first compensation transistor and a second compensation transistor having a dual gate structure. The impurity region—is irradiated with laser light, thereby connecting the impurity region and the repair wiring line. Then, the second compensation transistor is turned to an on state, thereby setting a potential of a node to the same potential as the off potential and turning the drive transistor to a normally-off state. As a result, a pixel circuit is converted into a black dot and thus repaired.

Abstract: The present invention provides a liquid crystal display device for which laser repair can be easily performed to correct a defect pixel, and/or a liquid crystal display device capable of reducing generation of contact failure and a short circuit. The liquid crystal display device of the present invention includes a first substrate, a liquid crystal layer, and a second substrate in the given order. The first substrate includes: an insulating substrate; a scanning line; a data line; a first insulating film disposed between the scanning line and the data line; a common line extending in an extension direction of the scanning line or the data line; a counter electrode facing the common line with the first insulating film in between; a switching element being connected to the scanning line and the data line; a second insulating film; a pixel electrode being connected to the switching element and the counter electrode; a third insulating film; and a common electrode being provided with an opening.

Abstract: The present invention provides a liquid crystal display device for which laser repair can be easily performed to correct a defect pixel, and/or a liquid crystal display device capable of reducing generation of contact failure and a short circuit. The liquid crystal display device of the present invention includes a first substrate, a liquid crystal layer, and a second substrate in the given order. The first substrate includes: an insulating substrate; a scanning line; a data line; a first insulating film disposed between the scanning line and the data line; a common line extending in an extension direction of the scanning line or the data line; a counter electrode facing the common line with the first insulating film in between; a switching element being connected to the scanning line and the data line; a second insulating film; a pixel electrode being connected to the switching element and the counter electrode; a third insulating film; and a common electrode being provided with an opening.

Abstract: A drain electrode 25 of a TFT 21 overlaps with a gate electrode formed integrally with a gate line 23. A pixel electrode 22 has a main body part formed on a first side of the gate line 23, and an extension part extending in an extending direction of a data line 24 and covering an overlapping portion of the gate electrode and the drain electrode 25. The drain electrode 25 is not formed on a second side of the gate line 23, whereas the extension part of the pixel electrode 22 is formed also on the second side of the gate line 23. Even when a position of the pixel electrode 22 is shifted in the extending direction of the data line 24, a parasitic capacitance between a drain and a source of the TFT 21 is kept constant, because an area of a portion where the extension part of the pixel electrode 22 overlaps with the gate line 23 does not change. With this, degradation of display quality due to a variation in the parasitic capacitance between the gate and drain of the TFT 21 can be prevented.

Abstract: A drain electrode 25 of a TFT 21 overlaps with a gate electrode formed integrally with a gate line 23. A pixel electrode 22 has a main body part formed on a first side of the gate line 23, and an extension part extending in an extending direction of a data line 24 and covering an overlapping portion of the gate electrode and the drain electrode 25. The drain electrode 25 is not formed on a second side of the gate line 23, whereas the extension part of the pixel electrode 22 is formed also on the second side of the gate line 23. Even when a position of the pixel electrode 22 is shifted in the extending direction of the data line 24, a parasitic capacitance between a drain and a source of the TFT 21 is kept constant, because an area of a portion where the extension part of the pixel electrode 22 overlaps with the gate line 23 does not change. With this, degradation of display quality due to a variation in the parasitic capacitance between the gate and drain of the TFT 21 can be prevented.

Abstract: A TFT substrate (10) includes a substrate (10a); a TFT (11) supported by the substrate; a scanning line (12); a signal line (13); a first interlayer insulating layer (15) provided so as to cover the TFT; a pixel electrode (16) electrically connected to a drain electrode (11d) of the TFT; and a transparent storage capacitor electrode (17) provided so as to overlap at least a part of the pixel electrode. At least the first interlayer insulating layer has a contact hole (CH) formed therein through which the pixel electrode is electrically connected to the drain electrode. The scanning line includes a first area (R1) in which the scanning line is branched into two branched lines (12a). The contact hole is located between the two branched lines.

Abstract: An active matrix substrate for a liquid crystal panel of an FFS mode includes gate lines, data lines, pixel circuits each including a switching element and a pixel electrode, a protective insulating film formed in a layer over these elements, and a common electrode 30 formed in a layer over the protective insulating film. The common electrode 30 has slits 31 corresponding to the pixel electrode, for generating a lateral electric field to be applied to a liquid crystal layer. In the common electrode 30, a cutout above data line 32 having a portion extending in the same direction as that of the data line is formed in a region including a part of a placement region for the data line. On a counter substrate, a black matrix is formed in a position that faces a region including placement regions for the gate line, the data line, the switching element, and the cutout above data line 32. This reduces display failure caused by a load of the data line.

Abstract: A TFT substrate (10) includes a substrate (10a); a TFT (11) supported by the substrate; a scanning line (12); a signal line (13); a first interlayer insulating layer (15) provided so as to cover the TFT; a pixel electrode (16) electrically connected to a drain electrode (11d) of the TFT; and a transparent storage capacitor electrode (17) provided so as to overlap at least a part of the pixel electrode. At least the first interlayer insulating layer has a contact hole (CH) formed therein through which the pixel electrode is electrically connected to the drain electrode. The scanning line includes a first area (R1) in which the scanning line is branched into two branched lines (12a). The contact hole is located between the two branched lines.

Abstract: The present invention provides a liquid crystal display that suppresses defects caused by variation in process and improves display performance.

Abstract: The present invention provides a liquid crystal display device capable of suppressing alignment disorder of liquid crystal and having satisfactory VR characteristics. According to the present invention, a liquid crystal display device includes a pair of substrates and a liquid crystal layer interposed between the pair of substrates, the liquid crystal display device having a reflective region and a transmissive region. One of the pair of substrates includes a longitudinal projecting portion and a liquid-crystal-layer-thickness adjusting portion for setting a liquid crystal layer thickness in the reflective region to be smaller than a liquid crystal layer thickness in the transmissive region. At least a part of the projecting portion is arranged without a gap along at least a part of a step portion of the liquid-crystal-layer-thickness adjusting portion.

Abstract: The present invention provides a semi-transmissive liquid crystal display device that presents excellent display quality in the reflective display, and that can be easily applied to high definition. The liquid crystal display device of the present invention includes a first substrate, a liquid crystal layer, and a second substrate, in this order. The first substrate has pixel electrodes having a structure composed of a trunk portion and a plurality of branch portions that branch off from the trunk portion. The liquid crystal display device has a display region that includes a region where the branch portions and slits are alternately disposed. The display region has a reflective region and a transmissive region. The reflective region has a pixel electrode, a reflective film disposed under the pixel electrode, and a ?/4 retarder plate.

Abstract: A liquid crystal display device of at least one embodiment of the present invention includes a TN-mode liquid crystal display panel which is constituted by pixels of three colors (red, green, and blue) and a color filter. A thickness of a liquid crystal layer (cell thickness) is determined on a basis of a retardation value of green light or red light, which has a larger wavelength than blue having shortest wavelength among the three colors. A display data switching circuit carries out gradation conversion of shifting input gradation values to lower gradation values with respect to image data supplied to pixels of blue. Thus, grayscale inversion is prevented. The liquid crystal display device of the present invention produces an effect of improving transmittance of pixels of colors having wavelengths other than the wavelength of blue.

Abstract: In one embodiment of the present application, a liquid crystal panel drive device includes a signal processing section for determining an output gray scale in accordance with a gray scale transition from the gray scale which is forecasted to reach by a previous response to an input gray scale and can carry out overdrive with the output gray scale. At a temperature at which a rise gray scale transition may occur in absence of a response condition does not exist for single overdrive, the signal processing section determines, as an output gray scale, a gray scale lower than a maximum gray scale with respect to a particular gray scale transition out of a rise type gray scale transition. In such a way, a display quality (especially a moving image display quality) at a low temperature can be improved.