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 selection-addressing-type liquid crystal display selectively addresses a signal line of a pixel unit using groups of three selectors of a selector circuit in a time-division manner. A level converter level shifts selector pulses having a voltage swing corresponding to the external-circuit power supply to selector pulses having a voltage swing corresponding to the internal-circuit power supply. In a non-display region in partial display mode, the level converter is deactivated under the control of a control signal to reduce direct current consumption therein.
摘要:
A selection-addressing-type liquid crystal display selectively addresses a signal line of a pixel unit using groups of three selectors of a selector circuit in a time-division manner. A level converter level shifts selector pulses having a voltage swing corresponding to the external-circuit power supply to selector pulses having a voltage swing corresponding to the internal-circuit power supply. In a non-display region in partial display mode, the level converter is deactivated under the control of a control signal to reduce direct current consumption therein.
摘要:
A display device of a type capable of narrowing the pitch, realizing narrowing of the frame, and further lowering the power consumption and an electronic device using the device, wherein two horizontal drive circuits 13U and 13D employ an RGB selector scheme by storing three digital data in sampling and latch circuits, performing conversion processing to analog data three times by a common digital-to-analog conversion circuit during one horizontal period (H), selecting three analog data in the horizontal period in a time division manner, and outputting the same to data lines (signal lines).
摘要:
A display device and mobile terminal are provided. The display device can narrow the pitch, narrow the frame, and further reduce power consumption. The display device includes a display area; a vertical drive circuit; a first horizontal drive circuit converting input first and second digital image data to analog image signals, and supplying the same to a data line selected by the vertical drive circuit; and a second horizontal drive circuit converting input third digital image data to an analog image signal, and supplying the same to a data line selected by the vertical drive circuit. The first horizontal drive circuit includes a sampling latch circuit, a second latch circuit, a digital/analog conversion circuit, and a line selector for selecting the first and second digital image data in a time division manner in a predetermined period and outputting the same to the data line.
摘要:
A selection-addressing-type liquid crystal display selectively addresses a signal line of a pixel unit using groups of three selectors of a selector circuit in a time-division manner. A level converter level shifts selector pulses having a voltage swing corresponding to the external-circuit power supply to selector pulses having a voltage swing corresponding to the internal-circuit power supply. In a non-display region in partial display mode, the level converter is deactivated under the control of a control signal to reduce direct current consumption therein.
摘要:
The present invention is applied to, for example, a liquid crystal display device having a driving circuit integrally formed on an insulating substrate, and makes it possible to effectively avoid a variation in delay time in a logical circuit using TFTs or the like by inserting dummy data (DD) into input data (D1) and forcedly switching the logical level of the input data (D1) at a predetermined timing during a quiescent period (T2) in which the input data is held at a constant logical level.
摘要:
The present invention relates to a flat display apparatus and a flat display apparatus testing method, and is, for example, applicable to a liquid crystal display apparatus where drive circuits are integrally formed on an insulating substrate. The present invention is capable of carrying out a reliable screening of defective pixels so as to effectively avoid deterioration in reliability even in cases where transistors with low withstand voltages are employed. A common line-side wiring pattern COM of wiring patterns LCC and COM of a capacitor of pixels is connected to a precharge circuit externally in an independent manner.
摘要:
A flat display unit is applied to, for example, a liquid crystal display unit having a drive circuit integrally formed on an insulating substrate to sample tone data Dod, Dev in respective systems on corresponding horizontal drive circuits (23O, 23E) at a timing corresponding to sampling conducted when tone data (D11) is distributed to a plurality of systems.
摘要:
A display device and mobile terminal are provided. The display device can narrow the pitch, able to narrower the frame, and able to further reduce power consumption, comprising a display area; a vertical drive circuit; a first horizontal drive circuit converting input first and second digital image data to analog image signals, and supplying the same to a data line selected by the vertical drive circuit; and a second horizontal drive circuit converting input third digital image data to an analog image signal, and supplying the same to a data line selected by the vertical drive circuit, wherein the first horizontal drive circuit includes a sampling latch circuit for sequentially sampling and latching the first and second digital image data, a second latch circuit for latching the latch data of the sampling latch circuit again, a digital/analog conversion circuit (DAC) for converting the digital image data latched by the second latch circuit to an analog image signal, and a line selector for selecting the first and second digital image data converted to analog data by the DAC in a time division manner in a predetermined period and outputting the same to the data line.