摘要:
A display device comprises a display panel (1) having a pair of substrates with a plurality of scanning electrodes (X 1 , X 2 , X,) and a plurality of signal electrodes (Y 1 , Y 2 , ..., Y 9 ) formed on opposing surfaces of the substrates and a display medium confined between the substrates, a scanning electrode drive circuit (11, 21) for selectively applying one of a plurality of kinds of DC voltage signals (V 1 , V 2 , V 5 , V.; V 3 , V 1 , V,) to each of the scanning electrodes, and a signal electrode drive circuit (12, 3, 22) for selectively applying one of a plurality of kinds of DC voltage signals (V,, V 3 , V 4 , V 6 ; V 2 , V 4 ) to each of the signal electrodes. In the display device, at least one of the scanning electrode and signal electrode drive circuits comprises a plurality of plural-input/one-output electronic switches (S x1 , ..., S x6 ; S Y1 , ..., Syg) each including a plurality of one-input/one-output switches (S x11 , S X12 , ...; S Y11 , S Y12 , ...) associated with one electrode which are the same in number as three or more kinds of DC voltage signals and which are connected in parallel to independently receive each of the DC voltage signals and transmit it to the one electrode.
摘要:
An active matrix-type display device, comprising a plurality of field effect transistors arranged in the form of a matrix, means for sequentially driving the gate lines in such a manner that a plurality of gate lines are driven at a time so as to vertically scan the gate lines, and means for changing the combination of said plurality of gate lines driven at a time every vertical scanning period.
摘要:
The invention is directed to a matrix-addressed display device having a matrix-addressed display element such as a liquid crystal element. The device comprises a sampling frequency generator generating sampling frequency signals. By the sampling frequency signals, the serially input video signals are sampled, held and consequently converted serial to parallel. The sampling frequency generator is provided with means for stopping the sampling frequency signal in periods when serial-parallel conversion is not required.
摘要:
The present invention relates to an improved driving method capable of achieving high-quality display even in simple matrix addressing for a ferroelectric liquid crystal matrix panel at a high multiplex ratio. Pulses of a frequency higher than that of a scanning voltage in an addressed condition are applied to a scanning electrode in a non-addressed condition to gain either surface stabilizing effect or AC field stabilizing effect, hence ensuring high-contrast display. And the panel is so driven that the temporal average of the voltage applied to each pixel becomes zero, thereby averting deterioration of the liquid crystal.
摘要:
Bei einem Verfahren zum Ansteuern der Spaltenleitun gen einer Gasentladungsanzeigevorrichtung mittels modu lierten Spannungssignalen wird vorgeschlagen, daß die Spannungssignale pulsdauermoduliert werden.
摘要:
A display control circuit system (10) is disclosed which, while maintaining the compatibility of software perfectly, can realize various specifications of the software, provided for a gradation display in an LCD display (20) to realize substantially the same level of access as in a CRT display (20), permits a configuration control, and, when one or more bits are expanded in the conventional software, can protect the function-expanded bit(s). The display control system (10) includes mode select means (71) to select either a mode for controlling the display of CRT or a mode for controlling the display of LCD, means to execute the CRT display control, and means to execute the LCD display control.
摘要:
A video display apparatus includes a display device including a plurality of luminescent display cells (201 to 224, etc) arranged in a X-Y matrix form, each of the display cells (201 to 224, etc) having a cathode (K), a grid (G 1 )and a luminescent target electrode (T R , T G , T B ), a video signal source (101 to 106, 500) for supplying a video signal, and a driving circuit (501 to 504) for supplying the video signal to each of the display cells (201 to 224, etc) such that each of the display cells (201 to 224, etc) is turned on and off in accordance with the level of the video signal and a picture is reproduced on the display device (201 to 224, etc) with a constant current flowing therethrough.
摘要:
This invention relates to a display device in which display elements (21) are arranged in matrix form to provide a screen, and pictures, characters and animations can be displayed while being edited as desired. The display device comprises: a video data memory (8); a graphic data memory (9); a blanking data memory (10) for locking the output of the video data memory for every display element; and a video mode memory (11), a graphic mode memory (12) and a blanking mode memory (13) which lock the outputs of the video data memory (8), the graphic data memory (9) and the blanking data memory (10) for each of a plurality of areas which forms the entire area of the display screen, and the display device is arranged in two systems: a video data memory system and the remaining system.
摘要:
A video display apparatus includes a display device including a plurality of display cells (201 to 224, etc.) arranged in an X-Y matrix form, a video signal source (101 to 106) for supplying a digital video signal, a pulse width modulator (131 to 134, etc.) connected to the video signal source (101 to 106) for deriving a pulse width modulated signal corresponding to the brightness level of the digital video signal. The pulse width modulator (101 to 106) includes a counter (133) supplied with the digital video signal as a datum signal and a clock signal generator (501) for supplying a clock signal to the counter (133), and a signal supplying circuit (113) connected to the pulse width modulator (101 to 106) for supplying the pulse width modulated signal to the display device and reproducing a picture thereon. A control circuit (116) is connected to the clock signal generator (501) for changing the frequency of the clock signal supplied to the counter (133) to control the brightness of the picture reproduced on the display device.
摘要:
A flat panel liquid crystal display for use in providing single or multi-colour display images. The display comprises one or more ultraviolet light sources (not shown), a light pipe ' assembly which includes a plurality of liquid crystal cells (77, 78) that may be addressed via an array of transparent row and column electrodes (14, 16), and a viewing screen (9) having a plurality of phosphor elements (12, 98, 99) that are located in close proximity and in registry with respective liquid crystal cells (77, 78). Those phosphor elements (98) and only those phosphor elements that are associated with liquid crystal cells (78) that are in their scattering states are illuminated to form the image to be displayed.