摘要:
The present invention is applied to e.g. a liquid crystal display apparatus based on a multi-bit memory system. In the invention, input image data (SIG) is recorded in a memory part 62 in each pixel, and the grayscale is represented by time-division driving in accordance with the input image data (SIG) recorded in this memory part 62.
摘要:
An image display apparatus includes a display section having a pixel unit included in a layout of a pixel matrix and provided with a memory unit used for storing a logic level of input image data; a vertical driving section for asserting a scan signal on a scan line provided for the display section; and a horizontal driving section for asserting a driving signal according to the input image data on a signal line provided for the display section.
摘要:
The present invention is applied to e.g. a liquid crystal display apparatus based on a multi-bit memory system. In the invention, input image data (SIG) is recorded in a memory part 62 in each pixel, and the grayscale is represented by time-division driving in accordance with the input image data (SIG) recorded in this memory part 62.
摘要:
An image display apparatus includes a display section having a pixel unit included in a layout of a pixel matrix and provided with a memory unit used for storing a logic level of input image data; a vertical driving section for asserting a scan signal on a scan line provided for the display section; and a horizontal driving section for asserting a driving signal according to the input image data on a signal line provided for the display section.
摘要:
A display device able to amplify the same input as a power supply voltage of IC by using low temperature polysilicon having high threshold voltage and large variation and an electronic apparatus using the same, including MCK use level shifters 171-1 and 171-2 of a type where a reset operation is periodically necessary, a logic circuit 173 for using a level shift horizontal synchronization signal Hsync to input reset pulses for the MCK level shifters 171-1 and 171-2 having a period of N horizontal periods shifted in phase by M horizontal periods (note, M
摘要:
A display device includes a display unit in which pixels are arranged in a matrix state and a drive circuit selecting respective pixels in the display unit by each row and giving additional potential to pixel electrodes of the pixels by using coupling, in which the drive circuit has a function of allowing the reverse polarity of potential added to pixel electrodes to be a potential which can add suitable voltage to additional potential lines in a frame before adding the additional potential.
摘要:
A timing generating circuit with low power consumption and a small layout area, a display apparatus including the timing generating circuit as one peripheral driving circuit, and a portable terminal including the display apparatus as a display output section are provided. In the timing generating circuit, which is formed on an insulating substrate and generates output pulses SRFF1out to SRFFnout having different frequencies based on a master clock MCK, a clock generating circuit (11) generates an operating clock having a lower frequency than the master clock MCK frequency. Then, a counter section (12) operates based on this operating clock and successively outputs shifted pulses S/R1out to S/Rmount from shift registers (121-1) to (121-m). An output pulse generating section (13) generates output pulses SF1out to SFnout based on combinations of the shifted pulses S/R1out to S/Rmount.
摘要:
A supply voltage conversion circuit allowing fabrication of a charge pump circuit having a large current capability with a small area is provided. In a charge pump DC-DC converter (10) for converting a supply voltage VDD1 to a supply voltage VDD2, a level shifter (12) implements amplitude conversion to convert from a control pulse with amplitude of VSS-VDD1 to a control pulse with amplitude of VSS-VDD2. By using the control pulse having the converted amplitude as a pumping pulse, a flying capacitor (C11) is charged/discharged by MOS transistors (Qp11), and (Qn11) of a charge pump circuit (11), and switching of MOS transistors (Qn12), and (Qp12) coupled to the output of the flying capacitor (C11) is controlled.
摘要:
An oscillation circuit, power supply circuit, display device using same, and electronic apparatus which can be built in a display panel without causing an increase of cost and do not need any adjustment work, each having a pulse generation portion 161 formed by an oscillator outputting rectangular wave signals having a frequency variation and a frequency variation correction portion 162 for suppressing output rectangular waves of the pulse generation portion 161 within a certain frequency range and outputting the same to a boosting circuit 163, wherein the frequency variation correction portion 162 includes an input pulse counter 1621 having n number of counters cascade connected and counting numbers of high level and low level periods of rectangular waves input from the pulse generation portion within a comparison input period, a counter value comparison circuit 1622 for generating a selection signal for selecting a last output from any counter among the cascade connected counters when the input pulse counter counts any number, and an output selection circuit 1623 for receiving the selection signal and outputting a corresponding counter value.
摘要:
A liquid crystal display device enabling a reduction in size and costs associated with the system as a whole, starting to display images without image distortion at power on time, and turning the screen off without image retention at power off time, a method of controlling the liquid crystal display device, and a mobile terminal incorporating the liquid crystal display device as a screen display. On a glass substrate (11) provided with a display unit (12), peripheral drive circuits such as an interface circuit (13), a timing generator (14), a reference voltage driver (15), a CS driver (18), a VCOM driver (19), and a voltage regulation circuit (20), together with a horizontal driver (16) and a vertical driver (17) are disposed. When a display reset control pulse PCI is supplied from an external source, a predetermined voltage is written into pixels while a CS voltage and a VCOM voltage adjusted to the same level as that of a pixel voltage are applied to a common-electrode-side. This allows the screen to turn white in a normally white type liquid crystal display, and to turn black in a normally black type liquid crystal display. Image distortion at power on/off time can thus be prevented.