摘要:
A display capable of rendering flickering hard to visually recognize and reducing power consumption is obtained. This display comprises first and second pixel portions including subsidiary capacitors having first electrodes connected to pixel electrodes and second electrodes respectively, first and second subsidiary capacitance lines connected to the second electrodes of the first and second pixel portions respectively and a signal supply circuit supplying first and second signals having first and second voltages to the first and second subsidiary capacitance lines respectively.
摘要:
A delay synchronization loop type clock signal generating circuit includes: a digital delay line for delaying a first clock signal and generating a second clock signal; a ring-type shift register for setting the delay time length of the digital delay line by flip-flop output of each stage thereof; and a delay amount control unit for controlling supply of shift clocks to the ring-type shift register, based on phase relation between the first clock signal and the second clock signal.
摘要:
A level shift circuit basically has a configuration connecting two CMOS inverter circuits in parallel, furnishes an input signal to a control terminal of the inverter circuit, obtains an output signal from an output terminal of the inverter circuit, and has a function for level shifting the voltage amplitude of the input signal to the voltage amplitude of the supply voltage of the inverter circuit. The signal that is input by the gate terminal of an n-channel transistor arranged in each of two current paths forming the level shift circuit is not a direct input signal but a signal that is supplied by adding an offset corresponding to the threshold of each n-channel transistor with respect to the voltage amplitude of the input signal via the input voltage converter circuit.
摘要:
A display having a shift register circuit capable of suppressing increase of power consumption is provided. This display comprises a shift register circuit including a shift register circuit portion including a first circuit portion having a second transistor turned on in response to a first signal and a second circuit portion having a sixth transistor turned on in response to a second signal providing an ON-state period not overlapping with an ON-state period of the second transistor and an input signal switching circuit portion for switching the first and second signals supplied to the second and sixth transistors respectively.
摘要:
A display capable of rendering flickering hard to visually recognize and reducing power consumption is obtained. This display comprises first and second pixel portions including subsidiary capacitors having first electrodes connected to pixel electrodes and second electrodes respectively, first and second subsidiary capacitance lines connected to the second electrodes of the first and second pixel portions respectively and a signal supply circuit supplying first and second signals having first and second voltages to the first and second subsidiary capacitance lines respectively.
摘要:
An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight 15 is emitted to a proximity object from an I/O display panel 20, an electric charge for charging is accumulated in each of image pickup pixels 33 in accordance with total light amount as a summation of reflected light Lon originating from the illumination light and environment light (outside light) L0. Moreover, when the above-described illumination light is not emitted, an electric charge for discharging is released from each of the image pickup pixels 33 in accordance with light amount of the environment light L0. Thereby, a component by the environment light L0 is subtracted in an image pickup signal obtained from each of the image pickup pixels 33, so object information about the proximity object is obtainable without influence of the environment light L0. Moreover, in a light reception drive circuit 13, a smaller number of necessary frame memories 13A for producing a picked-up image from the image pickup signal than that in related art are necessary.
摘要:
An image pickup unit including: an image pickup section including pixels, each of the pixels including a photoelectric conversion device; and a drive section performing a line-sequential readout drive and a line-sequential reset drive. The drive section intermittently performs the line-sequential reset drive multiple times during one frame period, to allow a non-overlap period to be provided at least in part of reset operation periods in an overlap period. The overlap period is a period during which a drive period of one of the multiple line-sequential reset drives and a drive period of one of the remaining multiple line-sequential reset drives are overlapped. The non-overlap period is a period during which each of the reset operations by the one of the multiple line-sequential drives is not overlapped with any of the reset operations by the one of the remaining multiple line-sequential reset drives.
摘要:
A display device with an image pickup function includes: a plurality of pixel signal lines each supplied with a pixel signal; a plurality of display pixels each performing a display operation based on the pixel signal; and a plurality of image pickup elements each including a photo-detector and a capacitor, the photo-detector generating a current of a magnitude corresponding to a photo-detection amount, the capacitor performing a discharging operation which follows a charging operation with the current from the photo-detector to output a charged voltage for a read operation. In the display device, a voltage level of the pixel signal line during the discharging operation is equal to a voltage level of the pixel signal line during the reading operation.
摘要:
A sensor device includes sensor elements arranged in a matrix form, and a sensor driving section driving the sensor elements. Each of the sensor elements includes a photoelectric conversion element generating electric charge, a storage node storing electric charge, to show a voltage which fluctuates according to the stored electric charge, a reset transistor resetting the voltage in the storage node and a readout section reading the voltage value resulted from the stored electric charge in the storage node, to output the resultant voltage value. The sensor driving section controls the reset transistor so that the storage nodes of the sensor elements over sensor element lines are reset into the predetermined reset voltage at a time, and then performs read control after a lapse of a predetermined exposure period to allow the sensor detection signals to be sequentially outputted from the respective sensor elements arranged in each sensor element lines.
摘要:
Disclosed herein is a photoelectric conversion element including: a first semiconductor layer of a first conductivity type provided above a substrate; a second semiconductor layer of a second conductivity type provided in a higher layer than the first semiconductor layer; a third semiconductor layer of a third conductivity type provided between the first and second semiconductor layers and lower in electrical conductivity than the first and second semiconductor layers; and a light-shielding layer provided between the substrate and first semiconductor layer.