During a drive period, luminance momentarily decreases when the value (AB) is positive and momentarily increases when the value (AB) is negative. When the luminance increases during a pause period in accordance with the balance in time constant between an alignment film and a liquid crystal material that are included in a pixel forming portion, primary and secondary parasitic capacitances are adjusted so as to set the value (AB) to be negative.

A reset control circuit, a method for driving the same, a shift register circuit, and a display device are disclosed. The reset control circuit includes: a reset-off sub-circuit, a reset-on sub-circuit, and a general output terminal; a signal to be shifted is input to a first control terminal of the reset-off sub-circuit, a reset-off signal is input to a first input terminal thereof; a shift signal is input to a second control terminal of the reset-on sub-circuit, the signal to be shifted is input to a third control terminal thereof, the shift signal reused as a reset-on signal is input to a second input terminal thereof; with a pulse level of the signal to be shifted, the reset-off sub-circuit is controlled to be enabled to output the reset-off signal to the general output terminal, the reset-on sub-circuit is controlled to be disabled to stop the reset-on signal from being output.

An object is to reduce parasitic capacitance of a signal line included in a liquid crystal display device. A transistor including an oxide semiconductor layer is used as a transistor provided in each pixel. Note that the oxide semiconductor layer is an oxide semiconductor layer which is highly purified by thoroughly removing impurities (hydrogen, water, or the like) which become electron suppliers (donors). Thus, the amount of leakage current (off-state current) can be reduced when the transistor is off. Therefore, a voltage applied to a liquid crystal element can be held without providing a capacitor in each pixel. In addition, a capacitor wiring extending to a pixel portion of the liquid crystal display device can be eliminated. Therefore, parasitic capacitance in a region where the signal line and the capacitor wiring intersect with each other can be eliminated.

A display device and a display driving method are provided. The display device includes a display panel and a timing controller. A timing controller is configured to drive the display panel. A memory is configured to store previous image data. The timing controller sequentially receives a plurality of current image data during an image update period, and compares the plurality of current image data to the previous image data to sequentially generate a plurality of driving signals. The timing controller sequentially outputs the plurality of driving signals to the display panel during the screen update period to update a display screen of the display panel.

A cholesteric liquid crystal writing board, which can display a writing track, includes a cholesteric liquid crystal device, an optical layer, a photo-sensing array and a voltage control circuit. The cholesteric liquid crystal device includes plural liquid crystal control areas. The optical layer has plural optical openings. The photo-sensing array includes plural photo sensors arranged in an array. The photo sensors are disposed corresponding to the optical openings. One of the photo sensors senses a luminous flux change and generates an erasing signal accordingly. The voltage control circuit receives the erasing signal and outputs a voltage signal accordingly to the liquid crystal control areas corresponding to the photo sensors having the luminous flux change, such that a part or all of cholesteric liquid crystals corresponding to the liquid crystal control areas are morphologically changed so as to clear a part or all of the writing trace.

An object is to reduce parasitic capacitance of a signal line included in a liquid crystal display device. A transistor including an oxide semiconductor layer is used as a transistor provided in each pixel. Note that the oxide semiconductor layer is an oxide semiconductor layer which is highly purified by thoroughly removing impurities (hydrogen, water, or the like) which become electron suppliers (donors). Thus, the amount of leakage current (off-state current) can be reduced when the transistor is off. Therefore, a voltage applied to a liquid crystal element can be held without providing a capacitor in each pixel. In addition, a capacitor wiring extending to a pixel portion of the liquid crystal display device can be eliminated. Therefore, parasitic capacitance in a region where the signal line and the capacitor wiring intersect with each other can be eliminated.

A LCD device containing an active drive dot matrix LCD element, each pixel containing subsidiary pixels each having a color filter; a passive drive segment display LCD element laminated on rear side of the active drive LCD element, having segment electrode, arranged to be applied with a set voltage, the segment electrode having edge defining a segment shape; cross-nicol polarizers disposed on both outer sides of the LCD elements; controller circuit including first part controlling voltages to be applied to subsidiary pixels, and second part controlling voltages to be applied to the segment electrode; wherein the display device produce normally black display in the absence of applied voltage; and wherein when the segment electrode is activated, those subsidiary pixels in pixels outside the edge of the activated segment electrode are partly driven and partly not driven, displaying different color or intermediate grade, than the conventional art.

A light adjustment device, a method of preparing the same, and a display device are provided, the light adjustment device includes: light-absorption portions spaced apart from one another, with first gaps each functioning as light ray passages and between each two adjacent light-absorption portions of the light-absorption portions, respectively; first electrodes being transparent and between each two adjacent light-absorption portions of the light-absorption portions respectively and at least partially located on both sides of each of the light ray passages; at least one second electrode being also transparent, each being in a respective one of the first gaps respectively, with second gaps each being between each second electrode and a respective adjacent one of the first electrodes; and transflective portions being electrically polarized and in the second gaps respectively, comprising light-transmitting portions and light-reflecting portions, the light-reflecting portions being steerable to be turned under an electric field force.

A composite article having a conductive layer on at least a portion of a flexible substrate. Electrical connectivity between various portions of the substrate can be obtained through this conductive layer. The conductive layer comprises a conductive surface, and there is a patterned layer on at least a portion of a first region of the conductive surface. The patterned layer comprises a conductive material having a surface roughness, and is in electrical contact with the conductive surface. An overcoat layer is present on at least a portion of the first region, such that the overcoat layer has a thickness less than the surface roughness, such that the conductive layer within the first region is covered by the overcoat layer, and such that at least a portion of the patterned layer substantially protrudes above the overcoat layer. The protruding portion permits electrical contact with the patterned layer, and via the conductive layer to other parts of the patterned layer and/or electrically conductive connectors to external electronic devices. Methods for forming the composite article are also disclosed. Methods of making such composite articles are also disclosed.

A driver includes a first terminal, a second terminal, a control circuit, a first drive circuit, and a second drive circuit. The control circuit outputs a first pulse width signal group and a second pulse width signal group. The first drive circuit outputs a first segment drive signal to the first terminal based on a pulse width signal selected according to grayscale data. The second drive circuit outputs a second segment drive signal to the second terminal based on the pulse width signal selected according to the grayscale data. The first terminal is coupled to a first segment electrode and the second terminal is coupled to a second segment electrode.