JPS59154491A - Driving of matrix display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Regarding the modification A of the display, even if an inferior display element such as a liquid crystal display device (1) is used, it is possible to achieve a high resolution up to 1 minute 7.
Z: I am knowledgeable about how to enable and display the CoJ Trust.

Round I ■, LCD, 1 le (゛, G: I, etc. L'M I muni high glance) F
Dust The development of display panels is active. When 11 high-density displays are used in such a time-division/elbow display element, the following two methods are used.33 The first method is to suppress the sub-division degree to an appropriate value. The IJ method, which uses multiple wiring etc., is also called a passive matrix. The second method is to form active elements such as transistors and non-linear resistors on the panel as switchboards, and to accumulate and accumulate the voltage at each pixel. )1
, the song title is relatively easy to manufacture the panel, or increase the wiring multiplicity (- also has a limit, and the display density can be increased).
No 3. The latter is shown in Table) J〈density is -1-min. It is extremely difficult to incorporate innovation into high-density, defect-free and uniform technology.
As a Ti laminated panel, the results have not been fully realized.

The present invention is based on the conventional Akraino-7 trix (42)'
7 presents a method of optimizing and using a nonlinear resistor that has been used as a charge storage element (・JNakubano'/7・Ma[・Riks 顛雛1)'' as a type 1 resistor that partially destroys the voltage. As a load storage element (・i enough 1 (1) even an element that does not have 1 function can be used + 1 () function - (, and the 112i division rule of the passive 7 trix can be multiplied by several times to 10 times).
, The following is an explanation based on the drawings.
) is a column electrode, and (:(l,1)(], j is an integer) is a display point.

There is an equivalent circuit of one matrix having (], square nonlinear resistance 1., (i, 1) 4 and i 4 addition 2j, -matrix wave element M(i, 1).Conventional is used as an actin-ζ trix, , l'd in detail (B, L, c, ←I]n (・1 Hide's paper (1'
roc, I I> No. 1], \□0459
, l) 1566-1579, (197], )) and Ca:, 1-ec berry's paper (IE
'pL E Trans, El)-g 6.1) 1
123-1128 (1979)), the passive system according to the present invention, -1-1) is also described in the second
Figure 3 shows the current 1 vs. voltage of the nonlinear resistance element used in the present invention ~171. This is an example of the J property, and the ono resistance changes from 3.1. to the shaved resistance I(.) before and after the threshold voltage ~' L b, indicating a bent intestinal property -4°. There is a matrix of the present invention (Table 7j<one part of the device is 1j example block diagram-C). A6
+ to display panel line) *S+~S2'
f"E' 7L+: 'jliB) No Iba, 154
(Fig. 5 1-)
Electrodes 1) 1 to F) 1. Column electrode 1 = rhino applied to
, 156 are display information 155. Timing Shinkyu 158.1
59,'11 yuan v%! 156.157 etc. to each tonino・
111. Supply=Jnlt: Key with +-A.

FIG. 5 is a drive waveform diagram of one embodiment of the present invention.
(''))'s number), Vl, (l (・Main scanning A17 is available and selection is available. 1 is for main use, J is selected for I1 and 11 is standard. Take voltage () 3, medium)
1. ) ,,, is the Theta Buddha month and depends on Chime (-14 7k, 1.l- and a). (Here, ゛ is B-tie Otsu-Yumi no Den L1.41.
The shape of both the scanning and theta signals is similar to that of the conventional Banosono-
1/61 of Z trix - E]'s a, 1λ = completely correct and A n n i). , however, the − waveform is converted into a nonlinear resistive element −
The matrix used in J'-4 (Ten application 4) has the relationship between 1 rigid dynamic voltage 1]-~'() and the nonlinear "Y" (relationship with the la value voltage V+1 of the resistance element and 310 It is necessary to optimize the value of the resistance, and the present invention adopts a strip 111 that is different from the conventional one, so that the oil can be used even with a conventional Y-right angle θ) (non-linear resistance element).

Figure 6 shows the above-mentioned C; i [shown 1', tc] in the paper by 1st-ee Berry.

f'-(F + g-7)! ! K fm <,
ff's --i'/11-r J),;,,,
i +/, -, 1, J+, 1, the following two conditions; coincidence') is safe and \7・') 3, a -, -, -1 (
'V th (Shi1shi~/[l]-\'th/
N〆',, (1) 1-c. , (Vth (ite) Shinihas9-■2.17./'\'... (:2)
(1), (2) i4 'Ji, i,) Accumulation type A-j
-74', no -; trix()) necessary condition f/J=-(
1, Ishi)ru1, However, all seven valves are (1) and (2) article f (ha river (
・-4, conversely, the next condition (S3) is f[l4].

1/zu\'[11 5th Figure 1(C), (d) is dumb f11 (3)
Using 1l11. ru'ton pressure he form teA・,ru. , the remaining pressure waveform is applied to the display element.
)stomach). ,・If the waveform is 2('), the voltage applied to the 71.1 square element is the end of the voltage.
The absolute value of the voltage λl applied to one display element is -
, -1-1) The voltage applied to the diode is at the point where the value obtained by subtracting Vth from the difference between O, j, and L# (・C matches). In other words, the conventional condition (1), ( 2), the nonlinear resistance element works as a switch for accumulating electric current, whereas in the present invention, if f+' (3+ is /<IJ, the nonlinear resistance element is immediately equal to j&l/ minus η ) of -IJ,E
The 3rd and 5th are I(C), which can be used as anti-element elements.
Adding E1 to the display element in (d) J'1. ruden) f
The effective value is the voltage ~'ON, Onoden 11fv
6144, (/(one pair L, hour minute III number n K pair 1 ~ next formula te & Iv sa, l' + le.

In order to optimize 1.1,'y'+4+, the following points need to be considered. First, the drive margin t-r defined in (6) is called the drive margin N.1, kf, t+, and is as large as possible. , to 4 = VoN IV. ,,,

(6) The more attractive the M is, the better the display quality, such as the contrast viewing angle, will be.

FIG. 7 is a four-line diagram of a-Vth-1j'-at the time of n.times.4000. In the case of liquid crystals, at present, we want h1 to be at least 11, so 9tb is less than 41 as shown in the following formula, and is preferably small.

0, 5, / V th / V, , % 1
(7) The second point to consider is the variation in V (I N), which is 1 for the variation in [11. Desirable 3. Define the rate of variation rn due to dispersion using the following formula: rn -: (rate of change in V, , 1) / (V t
(Change rate of h) (8) Casl-ee I] erry driving method is m = 1. , 5. In case of misfiring +91j, I'n O2 is also possible if the conditions are chosen as shown in Fig. 8, and if you use at least the outside of the curve l'+1, you can use it to a certain extent.

The third point to consider is the absolute value of the threshold voltage \/lh.

Although a nonlinear resistance element with an ideal threshold value of 4=1 as shown in FIG. 3 does not actually exist, for example, the application "C
The Amorun Asun Recon (A-8I) diode ring shown in Application No. 57-167945 has characteristics similar to those of other devices. However, the disadvantage of the basic f of 1mi is\/
If lh is low and one stage is 07 ~], OV L or more is required, multi-stage connection is required, and the column manufacturing becomes complicated as the number of stages increases.

Therefore, the display is 7L pressure V. \/lh/VoN standardized by N
If so, smaller is preferable. Figure 9 is a − “l’
This is a snow ■th/■oN diagram on the tb・1′-plane.

In the case of LCD, the VoN) is about 2■, so ■th/■oN-3
If you use the outside of the curve, a −S i diode is 6
It's within 1 step.

As is clear from the explanation of Jwo and l-, the present invention has the feature that compared to the conventional example, it only performs voltage subtraction without accumulating the voltage, and by optimizing the conditions, it is possible to deal with threshold fluctuations. Driving voltage fluctuation rate increased from conventional 11-.15 to 11]1
It is much smaller than IJ from 0 to 02, and has sufficient ＼'f1N/＼' compared to the conventional Panoshino Ma+-1)
When OFF is A15, high resolution of n = 400 to 1000 is also possible. (-Also, since there is no charge accumulation at all, the off-resistance 1 (.) in the characteristics shown in Figure 3, F can be used sufficiently even if it is not so large. In other words, in the past, the following equation for the load capacitance CL C was used. Although it was necessary to satisfy ROFF〉[ITA/C1,C(9) In the present invention, the following formula may be used as R6F4,)TA/C,c(10) Even if n == 100 to 1000, row A4 is large rlj
K has been relaxed. For example, when using a-, S i diode link, R due to external light, 1.
It is possible to reduce the yield and process scale without suppressing the decrease in , and the manufacturing conditions can be easily controlled, and the cost of manufacturing panels can be considerably reduced compared to the conventional method.

In addition, the reference level is set to 0 in the first half and a-1 in the second half as shown in FIG. Of course, there is no change even if the peak peak direct pressure is completely reduced.In addition, in the embodiment, a liquid crystal is used as the display element.Although liquid crystal is the most effective in the present invention, electrochromism, electroluminescence, etc. It doesn't matter if you have one acquisition element of 3゜

[Brief explanation of the drawing]

Figure 1 is a conventional Bano/Pumado IJ circuit diagram, and Figure 2 is a passive circuit diagram of the present invention using a nonlinear resistance element.
Fig. 3 is a characteristic diagram of the nonlinear resistance element included in the present invention, Fig. Driving waveform diagram for the L example (Fig. 5 is a conventional driving waveform diagram, Fig. 7.8.9)
The figure is based on the present invention i/i''. 1'' characteristic diagram shows the relationship between the driving conditions and evaluation parameters when the driving method is used. Figure 10 is a driving waveform diagram of another embodiment of the present invention. )stomach). S, S, ~S,... b electrode, D, L), -DM... Column tL right. C (i, j)...display element, N1, (1, J)..., JL wire-type resistance element, to 1
(1, J)...Matrix element, \/+h...
...Threshold voltage of nonlinear resistance element, @1m Fig. 2 Fig. 6 Fig. 7 ■th/'V0 Fig. 8 Fig. 9 Vj''Vv.

Claims (1)

[Scope of Claims] (A matrix element consisting of 73 poles and column electrodes in one or more rows '1, and a display element and a nonlinear resistance element connected in series between the row electrodes and the column electrodes, ”] Electrode and column i
In the drive method of the matrix display device, which has means for applying a driving signal to the if pole, the nonlinear resistive element has a threshold voltage Vt, h, and the absolute value of the voltage applied to the entire seven matrix elements is The value is the driving signal) applied, lL Lohot 7,
7 At which phase [51.
7 tric table where th is equal to the value obtained by subtracting the difference V from ld./J: Driving method of the device. (2) Drive signal - the bow has a selected phase (selected phase) and a selected phase (non-selected phase); A method for driving a 7-trix display device according to claim 1, characterized in that the maximum absolute value of the voltage is approximately equal to or close to the threshold voltage Vtb. 1 Drive distortion is a scanning signal that has a selected phase and a non-selected phase (e+':), and the ringing signal applied to the row electrodes is a take signal that depends on the display take, and is based on the scanning signal of the non-selected phase. The maximum value of the absolute value of the theta conversion amount is [4 (] value voltage ■ tb, which is approximately curvature (~).
A method of driving a trix display device. (4) The ringing signal is applied to the 17l-risk element in the non-selected phase, and the maximum value of the current is set to 0. Then Vt
h/Vo is approximately between 05 and 10K. 14
Take it as a sign! Claim 201: A driving force method for a 7-trix display device according to claim 201. (5) The monochrome display device according to claim 1, characterized in that the nonlinear resistance element is a forward-reverse parallel connected element of amorphous γ series. 5 driving force method.