摘要:
A driving method for a direct addressing type liquid crystal display device for displaying gradation by changing the amplitude of voltages applied to pixels, wherein a series of voltage pulses, as signal voltages, composed of a plurality of different voltage levels are applied in order to display a specified gradation, and for a display, a plurality kinds of gradation in which a part of the voltage levels is commonly used are selected.
摘要:
A method of driving an image display device including the steps of: dividing row electrodes of an image display device having a plurality of row electrodes and a plurality of column electrodes into a plurality of subgroups; selecting summarizingly one of the plurality of subgroups; applying voltages based on signals formed by expanding time-sequentially column vectors of an orthogonal matrix on the row electrodes; performing a gray scale display by a frame rate control (FRC) by using a plurality of frames; performing a space modulation shifting a phase of the FRC with a pixel block comprising a plurality of pixels as a unit; and wherein the phase of the space modulation is set such that a ratio of the columns each applying an equally effective voltage on all of the pixels in the column in each frame in displaying an intermediate gray scale level by all of the pixels belonging to the same subgroup is 40% or more on an average of all of the intermediate gray scale levels and all of the frames.
摘要:
A method of driving a picture display device having a plurality (an M number) of row electrodes and a plurality of column electrodes, by selecting an L number (L.gtoreq.3) of row electrodes simultaneously and by applying to the row electrodes voltages based on signals obtained by developing in time sequence column vectors of an M row-N column orthogonal matrix S (having elements 1, -1 and 0), wherein column electrode display pattern vectors (x =x.sub.1, x.sub.2, . . . X.sub.M) which have as elements display patterns (1: OFF, -1: ON), corresponding to simultaneously selected row electrodes, on a specified column electrode, and column electrode voltage sequence vectors (y)=(y.sub.1, y.sub.2, . . . y.sub.N) which have as elements voltage levels, on the column electrode which consists of an N number of voltage pulses arranged in time sequence in a display cycle, have a relation of (y.sub.1, y.sub.2, . . . y.sub.N)=(x.sub.1, x.sub.2, . . . x.sub.M) (S), wherein when .DELTA.y.sub.1 =.vertline.y.sub.1,-y.sub.l-1 .vertline.(i=2-N), the sum Q of the maximum value .DELTA.y.sub.MAX1 of .DELTA.y.sub.1 to (x)=(1, 1, . . . 1) and the maximum value .DELTA.y.sub.MAX2 of .DELTA.y.sub.1 to (1, -1, 1, -1, . . . ) substantially satisfies Q
摘要:
A method for forming a selection pulse sequence includes arranging, time-sequentially, selection pulse vectors which are applied to simultaneously selected scanning electrodes by repeating a subsequence which has a time period of 1/n (n is an integer of n.gtoreq.2) times one frame (a time period in which addressing operations are finished).
摘要:
A column electrode driving semiconductor integrated circuit for driving column electrodes in a liquid crystal display device to be driven by a multiple line selection method wherein the liquid crystal display device has a select and output circuit which selects a specified voltage value among voltage values having the member of levels corresponding to the member of simultaneously selected row electrodes, and applies the selected voltage value to each column electrode, wherein a memory unit including a control circuit stores display data and outputs the data on each row electrode in simultaneously selected lines, and an arithmetic circuit unit including an arithmetic processing circuit receives the data outputted from the memory unit and selection data indicating a voltage pattern applied to a selected row electrode and produces by arithmetic processing information of voltages selected by the select and output circuit unit.
摘要:
A method of driving a picture display device having an N number (N is an integer of not less than 2) of scanning electrodes and a plurality of data electrodes and being capable of optically responding to an effective value of a voltage applied to a pixel, which includes dividing the scanning electrodes into an M number of subgroups each having L rows, and applying voltages based on signals formed by expanding time-sequentially column vectors of an orthogonal matrix (A) having L rows to the scanning electrodes in each of the subgroups in order to select each of the subgroups together, changing, every time when a selection pulse is applied, the subgroups to which the selection pulse is applied, wherein L is 8 or less and N is 200 or more; the polarities of scanning voltages and data voltages are inverted with a periodicity of S times (S is a natural number) of a selection pulse width, and S is so determined that when an integer portion in the quotient of M/S is an even number, a remainder b satisfies S/b
摘要:
Driving is effected by MLA under a condition of L≠M or (M/L·(L+D) )≠N where M represents the total number of row electrodes, L represents the number of simultaneously selected row electrodes, D represents the number of dummy row electrodes and N represents the maximum magnifying power of a column voltage wherein driving is performed at a driving bias ratio which is deviated toward the minimum bias ratio with respect to the optimum bias ratio.
摘要:
A method of driving a display element wherein a light transmittance of a pixel selected by a row electrode and a column electrode changes in accordance with a difference between voltages applied on the row electrode and the column electrode, is employed which satisfies several conditions.
摘要:
An image display device having an electro-optical medium interposed between a pair of electrode substrates composing a matrix electrode, a driving circuit for driving the electro-optical medium by selectively applying a voltage on the matrix electrode and a reference voltage generator for supplying the driving circuit with a predetermined driving voltage. A noise compensating circuit is interposed between the driving circuit and the reference voltage generator, the noise compensating circuit detecting a noise in a voltage supplied from the reference voltage generator to the electro-optical medium at a predetermined noise detecting position, forming a noise compensating voltage having a first polarity reverse to a second polarity of the noise by using the noise, and supplying the noise compensating voltage to the driving circuit.
摘要:
Presented is a driving device 301 for a liquid crystal panel 10, which is provided with a controller 1, a memory 2, a row selection pattern generating circuit 7, a row voltage generating circuit 9, a latch circuit 6B, a column voltage generating circuit 11 and an operating circuit 51 (a line buffer group 3, a comparator circuit 4, adder circuits 5A, 5B, a latch circuit 6A and an imaginary data generating circuit 8), wherein an orthogonal matrix B of 6 simultaneously selected rows and 2 imaginary rows which is formed by expanding an orthogonal matrix A of 4 rows is used for a row selection pattern, and column output voltages are operated with a unit of A.