Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
274 words
In a display device comprising: a display panel (1) having a pair of substrates with a plurality of scanning electrodes (X 1 , X 2 ---, X 6 ) 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, whereby a great nuber of picture cells (P ij ) are formed by opposing portions of the scanning and signal electrodes and display medium confined therebetween; a scanning electrode drive circuit (11, 21) for selectively applyig one of a plurality of kinds of DC voltage signals (V 1 , V 2 , V 5 , V 6 ; V 3 , V l , V 5 ) 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 1 , V 3 , V 4 , V 6 ; V 2 , V4) to each of the signal electrodes, the inprovement wherein 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 , ---, S Y9 ) 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.
Claim 2
Dependent Claim
274 words
In a display device comprising: a display panel (1) having a pair of substrates with a plurality of scanning electrodes (X 1 , X 2 ---, X 6 ) 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, whereby a great nuber of picture cells (P ij ) are formed by opposing portions of the scanning and signal electrodes and display medium confined therebetween; a scanning electrode drive circuit (11, 21) for selectively applyig one of a plurality of kinds of DC voltage signals (V 1 , V 2 , V 5 , V 6 ; V 3 , V l , V 5 ) 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 1 , V 3 , V 4 , V 6 ; V 2 , V4) to each of the signal electrodes, the inprovement wherein 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 , ---, S Y9 ) 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.
Claim 3
Dependent Claim
18 words
A display device according to claim 1, wherein said one-input/one-output switch comprises a complementary MOS transistor (202, 203).
Claim 4
Dependent Claim
17 words
A display device according to claim 1 or 2, wherein said display medium comprises a liquid crystal.
Claim 5
Dependent Claim
94 words
A display device according to claim 3, wherein each of the scanning electrodes is selectively applied with one of voltages V c , 1 aV o +V c , (1-1 a)V o +V c and V o +V c , and each of the signal electrodes is selectively applied with one of voltages V c , 2 aV o +V c , (1-2 a)V o +V c and V o +V c , where V 0 is a maximum amplitude of voltage applied to the picture cell, and a and V are arbitrary constants.
Claim 6
Dependent Claim
81 words
A display device according to claim 3, wherein each of the scanning electrodes is selectively applied with one of voltages -(1-1 a)V o +V c , V and (1-1 a)V o +V c , and each of the signal electrodes is selectively applied with one of voltages -1 aV o +V c and 1 aV o +V c , where V o is a maximum amplitude of voltage applied to the picture cell, and a and V c are arbitrary constants.
Claim 7
Dependent Claim
23 words
A display device according to claim l, wherein a halftone display is effected by changing the period during which one switch is selected.
Claim 8
Dependent Claim
21 words
A display device according to claim 1, wherein the display panel comprises the picture cells arranged in matrix as a whole.