摘要:
There is provided an SSD display device with reduced power consumption.A selection circuit (400) consists of k selection blocks (410(1) to 410(k)). Each selection block consists of three thin-film. transistors. The three thin-film transistors respectively have three phases of selection control signal (CT) provided to their gate terminals. A scanning period (T1) is provided and followed by an idle period (T2). In the idle period (T2), the three thin-film transistors in each selection block are brought into ON state in accordance with selection control signals (CT) at an idle period frequency (fck2). The idle period frequency (fck2) is lower than a scanning period frequency (fck1).
摘要:
In order to suppress crosstalk between a pixel electrode and a source line to reduce flicker, an LCD device includes: gate lines 102 and source lines 105 which are provided in a grid pattern; pixel electrodes 111 arranged in a matrix pattern so as to correspond to intersections of the gate lines and the source lines; a transparent auxiliary capacitor electrode 109; and switching elements 121 configured to apply an image signal voltage supplied from the source line 105 to the pixel electrode 111 according to a scanning signal applied from the gate line 102. The switching element 121 is formed by using an oxide semiconductor layer 104, and the transparent auxiliary capacitor electrode 109 is provided between the source line 105 and the pixel electrode 111.
摘要:
Provided is a liquid crystal display device with reduced power consumption employing a CS drive method.A CS driver (500) consists of a CS shift register (510) and a CS output portion (520). The CS shift register (510) outputs control signals (COUT(1) to COUT(m)) in accordance with a CS clock signal CCK. The CS output portion (520) outputs auxiliary capacitance signals (CSS(1) to CSS(m)) in accordance with the control signals (COUT(1) to COUT(m)), respectively. An idle period (T2) is set following a scanning period (T1). During the idle period (T2), the CS driver (500) is driven in accordance with the CS clock signal (CCK) at an idle-period CS frequency (fcck2). The idle-period CS frequency (fcck2) is lower than a scanning-period CS frequency (fcck1).
摘要:
In order to suppress crosstalk between a pixel electrode and a source line to reduce flicker, an LCD device includes: gate lines 102 and source lines 105 which are provided in a grid pattern; pixel electrodes 111 arranged in a matrix pattern so as to correspond to intersections of the gate lines and the source lines; a transparent auxiliary capacitor electrode 109; and switching elements 121 configured to apply an image signal voltage supplied from the source line 105 to the pixel electrode 111 according to a scanning signal applied from the gate line 102. The switching element 121 is formed by using an oxide semiconductor layer 104, and the transparent auxiliary capacitor electrode 109 is provided between the source line 105 and the pixel electrode 111.
摘要:
Provided is a liquid crystal display device with reduced power consumption employing a CS drive method.A CS driver (500) consists of a CS shift register (510) and a CS output portion (520). The CS shift register (510) outputs control signals (COUT(1) to COUT(m)) in accordance with a CS clock signal CCK. The CS output portion (520) outputs auxiliary capacitance signals (CSS(1) to CSS(m)) in accordance with the control signals (COUT(1) to COUT(m)), respectively. An idle period (T2) is set following a scanning period (T1). During the idle period (T2), the CS driver (500) is driven in accordance with the CS clock signal (CCK) at an idle-period CS frequency (fcck2). The idle-period CS frequency (fcck2) is lower than a scanning-period CS frequency (fcck1).
摘要:
There is provided an SSD display device with reduced power consumption. A selection circuit (400) consists of k selection blocks (410(1) to 410(k)). Each selection block consists of three thin-film transistors. The three thin-film transistors respectively have three phases of selection control signal (CT) provided to their gate terminals. A scanning period (T1) is provided and followed by an idle period (T2). In the idle period (T2), the three thin-film transistors in each selection block are brought into ON state in accordance with selection control signals (CT) at an idle period frequency (fck2). The idle period frequency (fck2) is lower than a scanning period frequency (fck1).
摘要:
A thin-film transistor (1) of the present invention which (i) is used in a path in which a current flows in a given single direction and (ii) has high-concentration impurity regions (3 and 4) which are provided on both sides of a channel region (5) has a low-concentration impurity region (6) which is provided to be sandwiched only between (i) one of the high-concentration impurity regions (3 and 4) into which carriers corresponding to a polarity of the high-concentration impurity regions (3 and 4) move in accordance with the given single direction and (ii) the channel region (5). This provides a thin-film transistor which is less affected by a display signal and carries out on/off control with respect to an output signal of a photodetector that is provided in a pixel which constitutes a display screen of a display device.
摘要:
In each pixel formation portion of a display device, an amplification electrode is provided which is connected to a drain electrode of a thin-film transistor whose gate electrode is connected to a gate bus line and whose source electrode is connected to a source bus line. A second-capacitor is formed by the amplification electrode and a pixel electrode. A selection period is constituted by a precharge period and an amplification period. In the precharge period, a video signal potential is applied to the pixel electrode and a potential of a control wire is applied to the amplification electrode. In the amplification period, a video signal potential is applied to the amplification electrode with the pixel electrode being in a floating state.
摘要:
In a liquid crystal display device having a configuration in which one pixel is divided into a plurality of sub pixels, low power consumption is realized by reducing an amplitude of a video signal. In each pixel formation portion, an amplification circuit unit including a second-capacitor is provided between a dark display pixel electrode and a bright display pixel electrode. A selection period consists of a precharge period and an amplification period. In the precharge period, a potential of a control wiring is applied to the dark display pixel electrode, and a potential of a video signal line is applied to the bright display pixel electrode. In the amplification period, a potential of the video signal line is applied to the dark display pixel electrode in the state where the bright display pixel electrode is placed in a floating state.
摘要:
In a liquid crystal display device having a configuration in which one pixel is divided into a plurality of sub pixels, low power consumption is realized by reducing an amplitude of a video signal. In each pixel formation portion, an amplification circuit unit including a second-capacitor is provided between a dark display pixel electrode and a bright display pixel electrode. A selection period consists of a precharge period and an amplification period. In the precharge period, a potential of a control wiring is applied to the dark display pixel electrode, and a potential of a video signal line is applied to the bright display pixel electrode. In the amplification period, a potential of the video signal line is applied to the dark display pixel electrode in the state where the bright display pixel electrode is placed in a floating state.