CN1790115A - Liquid crystal display - Google Patents

Abstract

Disclosed is a liquid crystal display comprising: a pair of opposed substrates; a liquid crystal layer disposed between the pair of substrates, the liquid crystal layer having a display alignment state and a non-display alignment state which differ from each other and being subjected to an initialization process so as to be changed from the non-display alignment state to the display alignment state before an image is displayed; storage capacitor electrodes provided on one of the pair of substrates; pixel electrodes provided so as to overlap with the storage capacitor electrodes with an insulator interposed therebetween and disposed between the storage capacitor electrode and the liquid crystal layer, the pixel electrode having a lack portion in a region overlapping with the storage capacitor electrode; and drive means for generating potential difference between the storage capacitor electrode and the pixel electrode to thereby perform the initialization process.

Description

Liquid crystal indicator

The application number that is entitled as " liquid crystal indicator " that the application submits to Patent Office of the People's Republic of China on January 25th, 2002 for Panasonic Electric Equipment Industrial Co.,Ltd is dividing an application of 02105422.3 Chinese patent application.

Prior art

In recent years, along with Development of Multimedia Technology, the circulation of image information increases suddenly.As the device that shows such image information, liquid crystal indicator obtains popularizing rapidly.This be because along with the development of liquid crystal technology, develop, practical contrast height, the wide liquid crystal indicator in visual angle.Current, the display performance of liquid crystal indicator has reached the level of CRT monitor.

But current liquid crystal indicator is because liquid crystal response speed is fast inadequately, so be unsuitable for animation display.Promptly, although in current NTSC (National Television System Committee) system, in 1 image duration (16.7msec), need liquid crystal response, but responding between tone when having carried out the masstone demonstration, current liquid crystal indicator needs more than the 100msec, so the phenomenon that image flows in the animation display takes place.Particularly owing to response between the tone in the low zone of driving voltage is obviously slow, so can not realize animation display well.

Therefore, repeatedly carried out the high-speed response test of liquid crystal indicator in the past.The various liquid crystal display modes of high-speed response are gathered (C.S.Wu and S.T.Wu.SPIE, 1665,250 (1992)) by Wu etc., but the current mode that does not also have to realize having the required response characteristic of show events image.

Current, as display device, be conceived to have the ocb mode liquid crystal display element, the liquid crystal indicator of strong dielectricity liquid crystal display cells or anti-strong dielectricity liquid crystal display cells with the high-speed response that is suitable for animation display.

Wherein, strong dielectricity liquid crystal display cells and anti-strong dielectricity liquid crystal display cells with layer structure exist impact resistance poor, and the serviceability temperature scope is little, the problem in the high practicality of the temperature dependency of characteristic.Therefore, be conceived to use the ocb mode liquid crystal display element of nematic liquid crystal in the reality as the liquid crystal display cells that is suitable for the show events image.

This ocb mode liquid crystal display element is found its high speed in nineteen eighty-three by J.P.Bos.Afterwards, can realize the display of wide viewing angle and high responsiveness simultaneously by polarizer is installed owing to show, so research and develop more energetically.

Figure 36 is the sectional view of the structure of the existing ocb mode liquid crystal display element of modal representation.As shown in figure 36, this ocb mode liquid crystal display element has first glass substrate 81 that is formed with transparent opposite electrode 82 in its lower section and second glass substrate 88 that is formed with transparent pixel electrode 87 in the above.Below opposite electrode 82, be formed with first alignment films 83, on pixel electrode 87, be formed with second alignment films 86, at the secretion liquid crystal molecule of 83,86 of these alignment films and form liquid crystal layer 84.On these alignment films 83,86, carried out making liquid crystal molecule parallel respectively to unidirectional taking-up processing.Utilize pad 85 to keep the layer thickness of liquid crystal layer 84.

On first glass substrate 81, be provided with first polaroid 91, below second glass substrate 88, be provided with second polaroid 92.These polaroids 91,92 are configured to crossed nicols (that is their light shaft positive cross).Between this first polaroid 91 and first glass substrate 81, be provided with first polarizer 89, between second polaroid 92 and second glass substrate 88, be provided with second polarizer 90.Adopt the negative phase difference plate of main shaft mixing assortment as these polarizers 89,90.

The ocb mode liquid crystal display element of Gou Chenging is characterised in that by applying voltage the liquid crystal aligning state is transferred to disordered orientation 84b from orderly orientation 84a like this, utilizes this disordered orientation state to carry out image and shows.Because such ocb mode liquid crystal display element obviously improves than liquid crystal response speed such as TN (Twisted Nematic) mode liquid crystal display elements, so can realize being suitable for the liquid crystal indicator of animation display.In addition, by polarizer 89,90 is set, can also realize wide viewing angle.

As mentioned above, the ocb mode liquid crystal display element carries out the image demonstration when liquid crystal is the disordered orientation state.Therefore, must carry out transferring to (below, be called order-disorder and shift) initialization process of unordered (ペ Application ト) orientation from initial orderly (ス Off レ ィ) orientation.

Figure 37 is the figure that the existing liquid crystal indicator of explanation carries out the initialization process of order-disorder transfer, (a) being to represent to carry out the figure that ratio that order-disorder shifts changes, is to be illustrated in the figure that imposes on the voltage waveform of liquid crystal display cells in this initialization process (b) and (c).

In Figure 37 (a), the longitudinal axis represents that liquid crystal layer that liquid crystal display cells has transfers to the ratio of disordered orientation from initial orderly orientation.Among Figure 37 (b), (c), the longitudinal axis is represented the potential difference (PD) of potential difference (PD), gate line and the source electrode line of source electrode line and opposite electrode respectively.

Shown in Figure 37 (b), in initialization process, respectively source electrode line and opposite electrode are intermittently applied assigned voltage, so that the potential difference (PD) that makes source electrode line and opposite electrode is greater than 10V.Shown in Figure 37 (c), in whole initialization process, respectively gate line and source electrode line are applied assigned voltage, so that the potential difference (PD) that makes gate line and source electrode line is greater than 10V.Its result, shown in Figure 37 (a), the ratio of transferring to disordered orientation progressively increases, and finishes order-disorder and shift when initialization process finishes.

But, if observe the situation that this order-disorder shifts, begin to produce disordered orientation nuclear as can be known from certain specific place, grow up by this nuclear and shift.Below, this nuclear is called transition kernel.

In order to produce relevant transition kernel, open flat 10-20284 communique the spy and disclose assigned position in the array base palte side and form the protuberance that constitutes by conductive material and the LCDs of recess.According to such structure, owing to big around the electric field ratio that imposes on the liquid crystal layer on protuberance or the recess, so promote the generation of transition kernel, its result can successfully carry out order-disorder and shift.

But, under the situation of above-mentioned available liquid crystal display device,, shift so can not carry out order-disorder sometimes reliably because electric field intensity is enough not big.At this moment, the zone of local residual orderly state of orientation, this zone becomes bright spot, thereby observes into point defect.

The present invention proposes in view of the above problems, and its purpose is to provide a kind of can carry out the liquid crystal indicator that order-disorder shifts reliably.

Summary of the invention

In order to address the above problem, liquid crystal indicator of the present invention has opposed a pair of substrate; A liquid crystal layer, this liquid crystal layer is configured between the above-mentioned a pair of substrate, state of orientation in show state is different with state of orientation in the non-show state, makes image must be initialised to the state of orientation of show state before showing from the state of orientation of non-show state; Be arranged in the above-mentioned a pair of substrate first electrode on any one; With second electrode, this second electrode forms overlappingly across insulator and above-mentioned first electrode, be configured in simultaneously between above-mentioned first electrode and the above-mentioned liquid crystal layer, and with the above-mentioned first electrode overlapping areas in have disappearance portion; Produce potential difference (PD) and carry out above-mentioned initialized drive unit by making between above-mentioned first electrode and above-mentioned second electrode.

According to such structure, when having produced potential difference (PD) between first electrode and second electrode, other regional electric field intensity of electric field ratio of the disappearance portion periphery that second electrode has is big.Therefore, the liquid crystal molecule that is configured in this disappearance portion periphery becomes transition kernel, and the state of orientation that can carry out liquid crystal layer reliably shifts.

In the liquid crystal indicator of foregoing invention, a substrate in the above-mentioned a pair of substrate is an array base palte, and this substrate has: be configured to rectangular a plurality of pixel electrodes, assortment and be cross one another a plurality of gate lines and multiple source polar curve, the corresponding a plurality of on-off elements that are provided with and the conduction and cut-off between pixel electrodes and above-mentioned source electrode line is provided according to the drive signal that provides through above-mentioned gate line with above-mentioned each pixel electrode; Another substrate in the above-mentioned a pair of substrate is the counter substrate that has with the opposed opposite electrode of above-mentioned array base palte.

In the liquid crystal indicator of foregoing invention, have the storage capacitor electrode overlapping with pixel electrodes, with above-mentioned first electrode as above-mentioned storage capacitor electrode, with above-mentioned second electrode as pixel electrodes.

In the liquid crystal indicator of foregoing invention, with above-mentioned first electrode as gate line, with above-mentioned second electrode as pixel electrodes.

In the liquid crystal indicator of foregoing invention, have the storage capacitor electrode overlapping with pixel electrodes, with above-mentioned first electrode as above-mentioned storage capacitor electrode, with above-mentioned second electrode as above-mentioned source electrode line.

In the liquid crystal indicator of foregoing invention, with above-mentioned first electrode as above-mentioned gate line, with above-mentioned second electrode as above-mentioned source electrode line.

In the liquid crystal indicator of foregoing invention, with above-mentioned first electrode as pixel electrodes, with above-mentioned second electrode as above-mentioned gate line.

In the liquid crystal indicator of foregoing invention, have the storage capacitor electrode overlapping with pixel electrodes, with above-mentioned first electrode as pixel electrode, with above-mentioned second electrode as storage capacitor electrode.

In the liquid crystal indicator of foregoing invention, with above-mentioned first electrode as above-mentioned source electrode line, with above-mentioned second electrode as above-mentioned gate line.

In the liquid crystal indicator of foregoing invention, have the storage capacitor electrode overlapping with pixel electrodes, with above-mentioned first electrode as above-mentioned source electrode line, with above-mentioned second electrode as storage capacitor electrode.

In the liquid crystal indicator of foregoing invention, also have on the substrates different with the substrate that is formed with above-mentioned second electrode and above-mentioned first electrode in above-mentioned a pair of substrate across insulator overlapping third electrode and the 4th electrode, above-mentioned third electrode is configured between above-mentioned the 4th electrode and the above-mentioned liquid crystal layer, and with above-mentioned the 4th electrode overlapping areas in have disappearance portion, above-mentioned drive unit carries out above-mentioned initialization by producing potential difference (PD) between above-mentioned third electrode and above-mentioned the 4th electrode.

According to such structure, when having produced potential difference (PD) for the state of orientation of carrying out liquid crystal layer shifts between third electrode and above-mentioned the 4th electrode, other regional electric field intensity of electric field ratio of the disappearance portion periphery that third electrode has is big.Therefore, be not only the liquid crystal molecule of the disappearance portion circumferential arrangement that has at second electrode, also become transition kernel at the liquid crystal molecule of the disappearance portion circumferential arrangement that third electrode has.Like this, by producing transition kernel in the two substrates side, the state of orientation that can further carry out liquid crystal layer reliably shifts.

In addition, in the liquid crystal indicator of foregoing invention, also can be with above-mentioned disappearance portion as the peristome that is arranged on above-mentioned second electrode.

At this moment, above-mentioned peristome shape also can constitute and be included in a plurality of straight line portioies that cross one another direction is extended.Above-mentioned peristome shape also can be V word shape, W word shape or X word shape.In addition, above-mentioned peristome shape also can be a polygon.

In addition, in the liquid crystal indicator of foregoing invention, above-mentioned disappearance portion also can be according to applying the shape of both direction electric field to above-mentioned liquid crystal layer and constituting.According to such structure, form 2 kinds of twist alignment zones of turning left and turning right.Local elastic deformation energy quantitative change in these twist alignment zone contacts is big, shifts so can more successfully carry out the state of orientation of liquid crystal layer.

In the liquid crystal indicator of foregoing invention, above-mentioned second electrode also can constitute to have and comprise the peristome of its width less than the part of 4 μ m.According to such structure, can make the electric field intensity of the peristome periphery that first electrode has bigger.

In the liquid crystal indicator of foregoing invention, also can be with above-mentioned disappearance portion as the notch that is arranged on above-mentioned second electrode.According to such structure, can be with the liquid crystal molecule that is configured in this notch periphery as transition kernel, the state of orientation that can carry out liquid crystal layer reliably shifts.

Liquid crystal indicator of the present invention has opposed a pair of substrate; A liquid crystal layer, this liquid crystal layer is configured between the above-mentioned a pair of substrate, state of orientation in show state is different with state of orientation in the non-show state, makes image must be initialised to the state of orientation of show state before showing from the state of orientation of non-show state; First electrode and second electrode to form on any one substrate in above-mentioned a pair of substrate across the overlapping mode of insulator; Produce potential difference (PD) and carry out above-mentioned initialized drive unit by making between above-mentioned first electrode and above-mentioned second electrode; On the opposed position of above-mentioned a pair of substrate, form respectively and to the protuberance of the thickness direction projection of above-mentioned liquid crystal layer.

According to such structure, exist the box spacer thickness in zone of these protuberances littler than the box spacer thickness in the zone that does not have these protuberances.Like this, when between first electrode and second electrode, having produced potential difference (PD), local the change greatly of the at interval peripheral electric field intensity of the box in the zone that has protuberance for the state of orientation of carrying out liquid crystal layer shifts.Therefore, being configured in the peripheral at interval liquid crystal molecule of this box becomes transition kernel, and the state of orientation that can carry out liquid crystal layer reliably shifts.

Liquid crystal indicator of the present invention has: opposed a pair of substrate; A liquid crystal layer, this liquid crystal layer is configured between the above-mentioned a pair of substrate, state of orientation in show state is different with state of orientation in the non-show state, makes image must be initialised to the state of orientation of show state before showing from the state of orientation of non-show state; Also have: be arranged on first electrode on any one substrate in the above-mentioned a pair of substrate; And be configured in second electrode between above-mentioned first electrode and the above-mentioned liquid crystal layer; Produce potential difference (PD) and carry out above-mentioned initialized drive unit by making between above-mentioned first electrode and above-mentioned second electrode; The end that faces one another of two above-mentioned second electrodes that adjoin each other overlaps each other across insulator and above-mentioned first electrode.

According to such structure, when producing potential difference (PD) for the state of orientation of carrying out liquid crystal layer shifts between first electrode and second electrode, electric field intensity is local between the end that faces one another of second electrode of above-mentioned adjacency becomes big.Therefore, be configured in this towards the end between the liquid crystal molecule of periphery become transition kernel, the state of orientation that can carry out liquid crystal layer reliably shifts.

In the liquid crystal indicator of foregoing invention, in the above-mentioned end one with the above-mentioned first electrode overlapping areas in have projection, another with the above-mentioned first electrode overlapping areas in have corresponding above-mentioned projection recess.According to such structure, be configured in above-mentioned projection and the liquid crystal molecule between should the recess of projection is become transition kernel, the state of orientation that can carry out liquid crystal layer reliably shifts.

At this moment, the distance between above-mentioned projection and above-mentioned recess for greater than 4 μ m less than 8 μ m.Can not be short-circuited thereby make between each first electrode, can increase the electric field intensity between above-mentioned projection and above-mentioned recess.

In the liquid crystal indicator of foregoing invention, also can make above-mentioned protrusion-shaped become zigzag.

In the liquid crystal indicator of foregoing invention, substrate in the above-mentioned a pair of substrate also can be an array base palte, and this array base palte has: be configured to rectangular a plurality of pixel electrodes, intersect a plurality of gate lines of assortment and multiple source polar curve, be provided with and according to a plurality of on-off elements of conduction and cut-off between the drive signal switching pixel electrodes by above-mentioned gate line supplied with and above-mentioned source electrode line corresponding with above-mentioned each pixel electrode mutually; Another substrate in the above-mentioned a pair of substrate also can be the counter substrate that has with the opposed opposite electrode of above-mentioned array base palte.

In the liquid crystal indicator of foregoing invention, also can have the storage capacitor electrode overlapping with pixel electrodes, with above-mentioned first electrode as above-mentioned storage capacitor electrode, with above-mentioned second electrode as pixel electrodes.

In the liquid crystal indicator of foregoing invention, also can be with above-mentioned first electrode as gate line, with above-mentioned second electrode as pixel electrodes.

In the liquid crystal indicator of foregoing invention, above-mentioned insulator also can be used as color filter, also can be used as complanation layer.According to such structure, can be above-mentioned first electrode and the second interelectrode insulator with color filter or complanation layer double as.

In the liquid crystal indicator of foregoing invention, also can between above-mentioned second electrode body and above-mentioned end, form the pars intermedia of its width less than aforementioned body and above-mentioned end width.

According to such structure,, can obtain trading off between the memory capacitance that the memory capacitance that generates between the end that faces one another of second electrode of adjacency and other structural detail generate by adjusting the width and the length of pars intermedia.

In the liquid crystal indicator of foregoing invention, above-mentioned first electrode is formed by conductive light shielding film, with above-mentioned second electrode as above-mentioned opposite electrode.

In the liquid crystal indicator of foregoing invention, above-mentioned potential difference (PD) is more preferably greater than 15V and less than 32V.

In the liquid crystal indicator of foregoing invention, also can apply the voltage of opposed polarity to each pixel electrode of adjacency.Like this, by applying voltage, can generate the transverse electric field of both direction in a upset mode.Therefore, form two twist alignment zones of turning left and turning right.Because the local elastic deformation energy quantitative change in these two twist alignment zone contacts is big, and can more successfully carry out the state of orientation transfer of liquid crystal layer.

In the liquid crystal indicator of foregoing invention, the state of orientation that also can make above-mentioned non-show state is for being orientated in order, and the state of orientation that makes above-mentioned show state is a disordered orientation.Like this, can realize carrying out reliably the liquid crystal indicator that order-disorder shifts.

In the liquid crystal indicator of foregoing invention, can also have the lighting device of the light source that has each coloured light that sends redness, green, blueness respectively and control above-mentioned lighting device makes above-mentioned light source send the lighting device control device of each coloured light by time-sharing operation in 1 image duration.Like this, be a kind of so-called field sequential color system, can realize carrying out reliably the liquid crystal indicator that the state of orientation of liquid crystal layer shifts.

Liquid crystal indicator of the present invention has: opposed a pair of substrate; With a liquid crystal layer, this liquid crystal layer is configured between the above-mentioned a pair of substrate, state of orientation in show state is different with state of orientation in the non-show state, makes image must be initialised to the state of orientation of show state before showing from the state of orientation of non-show state; A substrate in the above-mentioned a pair of substrate is an array base palte, and this substrate has: be configured to rectangular a plurality of pixel electrodes, assortment and be cross one another a plurality of gate lines and multiple source polar curve, the corresponding a plurality of on-off elements that are provided with and the conduction and cut-off between pixel electrodes and above-mentioned source electrode line is provided according to the drive signal that provides through above-mentioned gate line with above-mentioned each pixel electrode; Another substrate in the above-mentioned a pair of substrate is the counter substrate that has with the opposed opposite electrode of above-mentioned array base palte, the source electrode that constitutes above-mentioned on-off element from above-mentioned source electrode line to the direction that is parallel to above-mentioned gate line, and extend overlappingly with above-mentioned gate line, separate by each insulator between above-mentioned gate line and the above-mentioned liquid crystal layer simultaneously, by above-mentioned gate line being provided the drive signal that makes conducting between pixel electrodes and the above-mentioned source electrode line, make the current potential of above-mentioned source electrode and pixel electrode identical, make simultaneously between above-mentioned source electrode line and the above-mentioned gate line to produce potential difference (PD) and carry out above-mentioned initialization.

In the liquid crystal indicator of foregoing invention, make between above-mentioned opposite electrode and the pixel electrodes and produce potential difference (PD).

In the liquid crystal indicator of foregoing invention, above-mentioned source electrode has bend.

Description of drawings

Fig. 1 is the sectional view of the structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 1.

Fig. 2 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 1.

Fig. 3 is that the III-III of Fig. 2 is to pseudosection.

Fig. 4 is the enlarged drawing of the liquid crystal layer part of sectional view shown in Figure 3.

Fig. 5 is the block scheme of structure of the liquid crystal indicator of the expression embodiment of the invention 1.

Fig. 6 is the figure that expression applies the relation of voltage and gibbs energy.

Fig. 7 is the cross section equipotential contour of the pixel that has of the liquid crystal indicator of the embodiment of the invention 1.

Fig. 8 is the distribution plan of the plane gibbs energy of the pixel that has of the liquid crystal indicator of the embodiment of the invention 1.

Fig. 9 is the figure of an example of transfer voltage waveform of the liquid crystal indicator of the expression embodiment of the invention 1.

Figure 10 is the figure of another example of transfer voltage waveform of the liquid crystal indicator of the expression embodiment of the invention 1.

Figure 11 is the figure of explanation point upset mode.

Figure 12 is the figure of explanation line upset mode.

Figure 13 is another routine planimetric map of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 1.

Figure 14 is another routine planimetric map of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 1.

Figure 15 is another routine planimetric map of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 1.

Figure 16 is another routine planimetric map of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 1.

Figure 17 is the sectional view of the structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 2.

Figure 18 is another routine sectional view of the structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 3.

Figure 19 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 4.

Figure 20 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 5.

Figure 21 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 6.

Figure 22 is that the XXII-XXII of Figure 21 is to pseudosection.

Figure 23 is the sectional view of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 7.

Figure 24 is the sectional view of an example of primary structure of thyristor (TFT) part of the liquid crystal display cells that has of liquid crystal indicator of the expression embodiment of the invention 8.

Figure 25 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 9.

Figure 26 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 10.

Figure 27 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 11.

Figure 28 is that the XXVIII-XXVIII of Figure 27 is to pseudosection.

Figure 29 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 12.

Figure 30 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 13.

Figure 31 is the sectional view of structure of the liquid crystal indicator of the modal representation embodiment of the invention 14.

Figure 32 is the planimetric map of an example of the dot structure that has of the liquid crystal indicator of the modal representation embodiment of the invention 15.

Figure 33 is the figure of an example of transfer voltage waveform of the liquid crystal indicator of the expression embodiment of the invention 15.

Figure 34 is the figure of another example of transfer voltage waveform of the liquid crystal indicator of the expression embodiment of the invention 15.

Figure 35 is the figure of another example of transfer voltage waveform of the liquid crystal indicator of the expression embodiment of the invention 15.

Figure 36 is the figure of the structure of the existing ocb mode liquid crystal display element of modal representation.

Figure 37 is the figure that the existing liquid crystal indicator of explanation carries out the initialization process of order-disorder transfer, (a) carried out the figure that ratio that order-disorder shifts changes for expression, (b) with (c) for being illustrated in the figure that imposes on the voltage waveform of liquid crystal display cells in this initialization process.

Embodiment

Below, with reference to the description of drawings embodiments of the invention.

(embodiment 1)

The embodiment of the invention 1 is by on the pixel electrode that is formed on the array base palte the inside peristome being set, can carrying out the example of the liquid crystal indicator of order-disorder transfer reliably.

Fig. 1 is the sectional view of the structure of the liquid crystal display cells that has of the liquid crystal indicator of the modal representation embodiment of the invention 1.Among the figure, for convenience, directions X is made as the last direction of liquid crystal display cells.

As shown in Figure 1, the liquid crystal display cells 100 that has of the liquid crystal indicator of present embodiment has liquid crystal cell 101 described later.Have the phase retardation film that the anisotropic optical media of negative index constitutes (below, be called for short the negative phase difference film) 104a, negative single shaft phase retardation film 105a, positive single shaft phase retardation film 106, a polaroid 107 what this stacked gradually main shaft mixing assortment above liquid crystal cell 101.Below liquid crystal cell 101, stack gradually negative phase retardation film 104b, negative single shaft phase retardation film 105b, polaroid 107.In addition, the effect of single shaft phase retardation film that the effect of twin shaft phase retardation film and addition are negative and positive single shaft phase retardation film is identical, therefore also can stack gradually negative phase retardation film 104, twin shaft phase retardation film (not shown) and polaroid on the two sides of liquid crystal cell.

Fig. 2 is the planimetric map of the structure of the above-mentioned liquid crystal cell of modal representation 101.Fig. 3 is that the III-III of Fig. 2 is to pseudosection.Fig. 4 is the enlarged drawing of the liquid crystal layer part of this sectional view.Among Fig. 2, for convenience, omitted the textural element that is arranged on the pixel electrode top.

As shown in Figures 2 and 3, liquid crystal cell 101 has two substrates, promptly has like that as described later, has the filter substrate 102 and the array base palte 103 of color filter.Filter substrate 102 and array base palte 103 be across pad (not shown) arranged opposite, the gap configuration liquid crystal layer 4 that forms between these filter substrates 102 and array base palte 103.According to as described in Fig. 4, inject liquid crystal molecules 20 as the back at this liquid crystal layer 4.In order to increase gibbs energy described later, liquid crystal molecule 20 is refractive index anisotropy Δ n greater than 0.2 cyanogen class liquid crystal material.

Filter substrate 102 stacks gradually color-filter layer 21, transparency electrode (opposite electrode) 2 and alignment films 3 and forms below glass substrate 1.This color-filter layer 21 is made of red color filter 21R, green color filter 21G and blue color filter 21B.Form black matrix layer 22 respectively as photomask at these color filter of all kinds edges.

On the other hand, array base palte 103 has glass substrate 10.Be formed with wiring layer 17 above the glass substrate 10 at this.This wiring layer 17 is cross one another gate line 12 and source electrode line 11, storage capacitor electrode 9, is prevented that the insulator of conducting between these electrodes from constituting by assortment.More specifically get on very well, storage capacitor electrode 9 is formed abreast with gate line 12 respectively, so that can make storage capacitor electrode 9 be configured in the assigned position of 12 of each gate lines.These gate lines 12 and storage capacitor electrode 9 are formed on on one deck, and this layer is positioned at the bottom.Form insulation course 8, so that cover these gate lines 12 and storage capacitor electrode 9.Be formed with source electrode line 11 above the insulation course 8 at this, form insulation course 7, so that cover this source electrode line 11.

On wiring layer 17, be formed with the pixel electrode 6 that is positioned at the pixel region that separates with gate line 12 and source electrode line 11.As mentioned above, because storage capacitor electrode 9 is configured in 12 of each gate lines, so pixel electrode 6 has across insulation course 7,8 and storage capacitor electrode 9 overlapping areas.In this zone, be formed with the 6a of rectangular aperture portion.

Form alignment films 5, so that cover pixel electrode 6 and wiring layer 17.Make liquid crystal molecule in the liquid crystal layer 4 parallel and be oriented to orientation process such as unidirectional known friction (rubbing) processing respectively to this alignment films 5 and the alignment films 3 that is arranged on filter substrate 102 sides.At this moment, the orientation process direction is parallel with source electrode line 11.

Label 13 expressions connect the drain electrode as the TFT (Thin Film Transistor) of thyristor, and label 14 expressions connect the drain electrode of this TFT13 and pixel electrode 6.

Under the original state of the liquid crystal display cells 100 that as above constitutes, liquid crystal molecule 20 becomes the orderly orientation shown in Fig. 4 (a).As described later, the liquid crystal indicator of present embodiment is transferred to disordered orientation Fig. 4 (b) shown in the state of orientation of liquid crystal molecule 20 from above-mentioned orderly orientation by liquid crystal display cells 100 is applied assigned voltage.Then, carrying out image under this disordered orientation state shows.That is, this liquid crystal display cells 100 is the ocb mode display element.Below, the voltage that will impose on liquid crystal display cells 100 when order-disorder shifts is called transfer voltage.

Fig. 5 is the block scheme of structure of the liquid crystal indicator of the expression embodiment of the invention 1.Combining reference according to Fig. 2 and Fig. 3, liquid crystal display cells 100 is known TFT (Thin Film Transistor) pattern display element, and as mentioned above, gate line 12 and source electrode line 11 are adapted to rectangular.Utilize gate driver 502 and Source drive 503 to drive the gate line 12 and the source electrode line 11 of this liquid crystal display cells 100 respectively, utilize control circuit 501 control gate drivers 502 and Source drive 503.

In addition, below liquid crystal display cells 100, has back of the body irradiation 500.This back of the body irradiation 500 is made of cold-cathode tube of the coloured light that turns white etc.

As above in the liquid crystal indicator of the present embodiment of Gou Chenging, control circuit 501 is exported to gate driver 502, Source drive 503 according to the picture signal 504 of outside input respectively with control signal.Its result, 502 pairs of gate lines 12 of gate driver apply scanning voltage signal and the TFT13 of each pixel of conducting successively, on the other hand, Source drive 503 and this timing as one man impose on the image signal voltage of corresponding image signals 504 pixel electrode 6 of each pixel successively by source electrode line 11.Like this, liquid crystal molecule is modulated, and the light transmission of back of the body irradiation 500 emissions changes.Its result, observer see the image of corresponding image signals 504.

Below, the order-disorder that specifies the liquid crystal indicator of the present embodiment that as above constitutes shifts.

Fig. 6 is the figure that expression applies the relation of voltage and gibbs energy.At this, so-called gibbs energy is considered to the summation of electric flux and elastic energy.

Among Fig. 6, label 31 expression liquid crystal molecules apply voltage-Gibbs energy flow characteristic when the disordered orientation state, and 32,33 represent that respectively liquid crystal molecule is the twist alignment state, applies voltage-Gibbs energy flow characteristic during state of orientation in order.

As shown in Figure 6, when applying voltage less than critical voltage Vcr, the gibbs energy of orientation is lower than the gibbs energy of disordered orientation in order.At this, mean the negative energy height because the gibbs energy is low, so the expression state is more stable.Therefore, this moment, orientation ratio disordered orientation state was more stable in order.

On the other hand, when applying voltage and be higher than critical voltage Vcr, this relation is opposite, and the gibbs energy of disordered orientation is lower than the gibbs energy of orientation in order.That is, disordered orientation is more stable than orderly state of orientation.

Thereby, applying under the situation of high voltage, liquid crystal molecule shifts to the more stable disordered orientation of state easily.Therefore, when having that electric field intensity is local to become big place, the liquid crystal molecule of this place periphery shifts to disordered orientation, and this transfer feeds through to other liquid crystal molecule.That is, cause that as transition kernel order-disorder shifts with the liquid crystal molecule that is configured in the big place periphery of the local change of such electric field intensity.

In the liquid crystal indicator of present embodiment, the liquid crystal molecule of the circumferential arrangement of the peristome 6a that forms at pixel electrode 6 becomes transition kernel.Below, this point is described.

In the liquid crystal indicator of present embodiment, carried out electric field emulation near the Electric Field Distribution the peristome 6a that checks pixel electrode 6.Particularly, pixel electrode 6 is applied+7V voltage, storage capacitor electrode 9 is applied-25V voltage and observe electric field intensity and change.At this, the rectangle that is shaped as wide 4 μ m, long 8 μ m of above-mentioned peristome 6a.

Fig. 7 and Fig. 8 are the figure of the above-mentioned electric field simulation result of expression, and Fig. 7 is the cross section equipotential contour of any pixel of having of the liquid crystal indicator of present embodiment, and Fig. 8 is the distribution plan of the plane gibbs energy of this pixel.Among Fig. 8, the dense more expression negative energy of color high more (the gibbs energy is low).

As shown in Figure 7, the equipotential line of peristome 6a periphery is dense.Being created in the electric field intensity of this peristome 6a periphery like this, as can be known local becomes big, is that electric field is concentrated.As mentioned above, this is because in pixel electrode 6 and storage capacitor electrode 9 overlapping areas peristome 6a is set, and these pixel electrodes 6 are applied different voltage with storage capacitor electrode 9.In addition, the negative energy of peristome 6a periphery uprises as can be seen from Figure 8.Like this, can confirm to cause easily that at peristome 6a periphery order-disorder shifts.That is, the liquid crystal molecule that is configured in this peristome 6a periphery as can be known becomes transition kernel.

As mentioned above, in the liquid crystal indicator of present embodiment, each pixel electrode 6 has peristome 6a respectively.Therefore, there is transition kernel in each pixel.Therefore, can be not residual the pixel of orientation in order still, can carry out order-disorder reliably and shift.

Below, illustrate present embodiment liquid crystal indicator the transfer voltage waveform and apply the mode of this transfer voltage.

Fig. 9 is the figure of transfer voltage waveform of the liquid crystal indicator of expression present embodiment.As shown in Figure 9, in the liquid crystal indicator of present embodiment, through source electrode line 11A, the 11C of odd column ... input to each pixel electrode 6Aa, 6Cc ... ac square-wave voltage polarity and through source electrode line 11B, the 11D of even column ... input to each pixel electrode 6Bb, 6Dd ... ac square-wave voltage polarity opposite.

At this moment, at first by apply+15V voltage pixel electrode 6Aa, 6Ab, the 6Ac of conducting first row as the gate line 12a of drive signal to first row ... TFT13Aa, 13Ab, 13Ac ...At these TFT13Aa, 13Ab, 13Ac ... when becoming conducting, as shown in Figure 9, to source electrode line 11A, 11C ... apply+7V voltage.Thereby, through TFT13Aa13Ac ..., from source electrode line 11A, 11C ... respectively to pixel electrode 6Aa, 6Ac ... apply+7V voltage.On the other hand, same TFT13Aa, 13Ab, 13Ac ... when becoming conducting, to source electrode line 11B, 11D ... apply-7V voltage.Thereby, through TFT13Ab, 13Ad ..., from source electrode line 11B, 11D ... respectively to pixel electrode 6Ab, 6Ad ... apply-7V voltage.

Then, apply once more-15V voltage, disconnect pixel electrode 6Aa, 6Ab, the 6Ac of first row by gate line 12a to first row ... TFT13Aa, Ab, Ac ...Meanwhile, apply+15V voltage pixel electrode 6Ba, 6Bb, the 6Bc of conducting second row by gate line 12b to second row ... TFT13Ba, 13Bb, 13Bc ...At TFT13Ba, 13Bb, 13Bc ... when becoming conducting, as shown in Figure 9, to source electrode line 11A, 11C ... apply-7V voltage.Thereby, through TFT13Ba, 13Bc ..., from source electrode line 11A, 11C ... respectively to pixel electrode 6Ba, 6Bc ... apply-7V voltage.On the other hand, TFT13Ba, 1Bb, 13Bc ... when becoming conducting, to source electrode line 11B, 11D ... apply+7V voltage.Thereby, through TFT13Bb, 13Bd ..., from source electrode line 11B, 11D ... to pixel electrode 6Bb, 6Bd ... apply respectively+7V voltage.

By all gate lines 12 are applied+15V voltage successively, as mentioned above, if apply ac square-wave voltage, then to odd-numbered line, pixel electrode 6Aa, the 6Ca of odd column, 6Ac, 6Cc from 11 pairs of each pixel electrodes 6 of source electrode line ... with even number line, pixel electrode 6Bb, the 6Db of even column, 6Bd, 6Dd ... apply positive voltage.On the other hand, to even number line, pixel electrode 6Ba, the 6Da of odd column, 6Bc, 6Dc ... apply negative voltage with odd-numbered line, pixel electrode 6Ab, the 6Cb of even column, 6Ad, 6Cd.

Like this, be not only pixel electrode 6Aa, the 6Ca of odd-numbered line ..., and pixel electrode 6Ba, the 6Da of even number line between, pixel electrode 6Aa, 6Ba, 6Ca, 6Da in odd-numbered line ... pixel electrode 6Ab, 6Bb, 6Cb, 6Db with even number line ... between also produce electric field respectively, Figure 11 illustrates its situation.

As mentioned above, adopting under the situation of polarity of voltage by the some upset mode of each some upset, as shown in figure 11, each pixel produce transverse direction (direction parallel) with substrate electric field (below, the transverse electric field), and this transverse electric field direction be the both direction of arrow 110 (length direction of source electrode line 11) and arrow 120 (length direction of gate line 12).Therefore, form 2 kinds of twist alignment zones of turning left and turning right.Local elastic deformation energy quantitative change in these twist alignment zone contacts is big, and its negative energy change as a result is big.Like this, can more successfully carry out order-disorder shifts.

As mentioned above, pixel electrode 6 is applied voltage, as shown in Figure 9, apply-1 second of 25V voltage for respectively simultaneously opposite electrode 2 and storage capacitor electrode 9.

By applying transfer voltage like this, it is big that the potential difference (PD) of the thickness direction of liquid crystal display cells 100 becomes.As mentioned above, because pixel electrode 6 is having peristome 6a with storage capacitor electrode 9 in the folded zone of insulation body weight, so when the potential difference (PD) of the thickness direction of liquid crystal display cells becomes big like this, produce stronger electric field at peristome 6a periphery and concentrate.Its result as transition kernel, can carry out the liquid crystal molecule that is configured in the peristome 6a periphery that each pixel electrode 6 has reliably order-disorder and shift.

In addition, structurally opposite electrode 2 and storage capacitor electrode 9 also can short circuits.For gate line 12, also needn't apply successively, and during initialization, be continuously applied grid conducting current potential each line.

As mentioned above and since give opposite electrode 2 and pixel electrode 6 apply respectively-25V, ± 7V voltage, so maximumly between these opposite electrodes 2 and pixel electrode 6 produce the 32V potential difference (PD), but the invention is not restricted to this value, get final product so long as can produce the value of transition kernel.Particularly, be greater than 10V, less than 35V, preferably greater than 15V, less than 32V.

Also can use the transfer voltage of waveform shown in Figure 10.That is, different with situation shown in Figure 9, keep the 0V current potential by making source electrode line 11, pixel electrode 6 is not applied voltage, apply 1 second-25V voltage for opposite electrode 2 and storage capacitor electrode 9.At this moment, can also carry out order-disorder equally reliably with the situation of the transfer voltage of using waveform shown in Figure 9 shifts.

But, before applying above-mentioned transfer voltage,, when promptly being applied with voltage between pixel electrode 6 and the opposite electrode 2,, shift thereby can not successfully carry out order-disorder owing to form the asymmetrical orderly state of orientation of assortment of liquid crystal molecule at liquid crystal layer 4.Therefore, be preferably in to apply and between pixel electrode 6 and opposite electrode 2, do not apply voltage before the transfer voltage.Like this, liquid crystal layer 4 is not applied voltage, can keep the orderly state of orientation of liquid crystal molecule assortment symmetry, thereby can more successfully transfer to the disordered orientation state.

In addition, as shown in figure 12, some upset mode that also can be above-mentioned, and use line upset mode to apply transfer voltage by each line polarity of voltage upset.At this moment, the transverse electric field of generation has only 1 direction (arrow 110), but promotes order-disorder to shift by this horizontal effect of electric field.

As mentioned above, in the liquid crystal indicator of present embodiment, the peristome 6a of pixel electrode 6 is shaped as rectangle, but is not limited thereto, and also can be following shape.

Figure 13 to Figure 16 is another routine planimetric map of shape of the peristome 6a of remarked pixel electrode 6.The peristome 6a of pixel electrode 6 shown in Figure 13 is made of 2 straight line portioies, and these straight line portioies are configured to extend to the cross one another direction of source electrode line.Also have, crossing by an end of these straight line portioies, become handstand V word shape.Owing to the transverse electric field that can produce both direction, so form 2 kinds of twist alignment zones of turning left and turning right by such shape.Its result, big in the local elastic deformation energy quantitative change of these twist alignment zone contacts, it is big that negative energy becomes.Like this, because by the big negative energy of local change, the liquid crystal molecule that is configured in this peristome 6a periphery becomes transition kernel, shift so can successfully carry out order-disorder.

In addition, also can not be such handstand V word shape, but V word shapes etc. be spent the shape that units rotate this handstand V word with 90.Also can form 2 kinds of twist alignment zones equally this moment.

The peristome 6a of pixel electrode 6 shown in Figure 14 constitutes and connects two above-mentioned handstand V words.Therefore, as shown in figure 14, become handstand W word shape.At this moment, form 2 kinds of twist alignment zones equally in the time of also can be with handstand V word shape.

Also can not such handstand W word shape, but spend the shape that units rotate this handstand W word with 90.It can also be the shape that connects the above-mentioned handstand V word more than 3.

The peristome 6a of pixel electrode 6 shown in Figure 15 is same as shown in Figure 13 to be made of 2 straight line portioies, but because these central parts are configured to mutual intersection, so become X word shape.Form 2 kinds of twist alignment zones equally when this moment also can be with handstand V word shape.

The peristome 6a of pixel electrode 6 shown in Figure 16 is a diamond shaped.Except this rhombus, also can for example be other polygons such as triangle, parallelogram.Form 2 kinds of twist alignment zones equally when this moment also can be with handstand V word shape.

As mentioned above, the peristome 6a of pixel electrode 6 can be different shape, and its width is also unqualified.But, to concentrate in order to produce stronger electric field, its width is preferably less.Particularly, preferably width less than 4 μ m.

(embodiment 2)

The embodiment of the invention 2 is the examples that are provided with the liquid crystal indicator of complanation layer 18.

As shown in Figure 2, in the liquid crystal indicator of embodiment 1, dispose source electrode line 11 between each pixel electrode 6, to thickness that should source electrode line 11, the part of first insulation course 7 forms protuberance between each pixel electrode 6.Therefore, the distance between each pixel electrode 6 must be greater than this protuberance width, and its result reduces numerical aperture.Therefore, be provided with following complanation layer 18 in the present embodiment.

Figure 17 is the sectional view of the liquid crystal display cells structure that has of the liquid crystal indicator of modal representation present embodiment.As shown in figure 17, will form the surface that covers first insulation course 7, on this complanation layer 18, be formed with pixel electrode 6 by the complanation layer 18 that resin materials such as propylene class resist constitute.

Because other structure is identical with embodiment 1, does not explain so enclose same label.

Like this, by complanation layer 18 is set, can shorten the distance of 6 of each pixel electrodes.Like this, owing to can make numerical aperture become big, can realize bright demonstration with low-power.

Relevant complanation layer 18 also can be used as the insulator work between pixel electrode 6 and the storage capacitor electrode 9.That is, this complanation layer 18 not only has the general service that makes concavo-convex layer become the plane, also with the purposes as the insulator between pixel electrode 6 and the storage capacitor electrode 9.

(embodiment 3)

Embodiments of the invention 3 are the examples that formed the liquid crystal indicator of color-filter layer in the array base palte side.

Figure 18 is the sectional view of the structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.As shown in figure 18, on the insulation course 7 that is arranged on array base palte 103 sides, be formed with the color-filter layer 21 that constitutes by color filter 21R of all kinds, 21G, 21B and the black matrix layer 22 that between these color filters, forms.

In addition, because other structure is identical during with embodiment 1, do not explain so enclose same label.

By such structure, color-filter layer 21 is as the insulator work between pixel electrode 6 and the storage capacitor electrode 9.That is, this color-filter layer 21 not only has as the general service that is used for the wave filter of Show Color, also with the purposes as the insulator between pixel electrode 6 and the storage capacitor electrode 9.

(embodiment 4)

Embodiments of the invention 4 are by pixel electrode and source electrode line that the inside at array base palte forms peristome to be set respectively, can carry out the example of the liquid crystal indicator of order-disorder transfer reliably.

Figure 19 is the planimetric map of the structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.As shown in figure 19, one of the both ends of pixel electrode 6 one outstanding towards this gate line 12 respectively overlappingly with gate line 12.With gate line 12 overlapping areas of this outshot in the 6a of rectangular aperture portion is set respectively.In addition, except these peristomes 6a, pixel electrode 6 is also same with the situation of embodiment 1, with storage capacitor electrode 9 overlapping areas in the 6a of rectangular aperture portion is set.Pixel electrode 6 and gate line 12 and storage capacitor electrode 9 are overlapping across insulation course equally with embodiment 1 situation.

In addition, source electrode line 11 is overlapping across insulation course and gate line 12, and the 11a of rectangular aperture portion is set in this overlapping areas.

In addition, because other structure is identical during with embodiment 1, do not explain so enclose same label.

As above in the liquid crystal indicator of the present embodiment of Gou Chenging, when applying embodiment 1 described transfer voltage, it is big that the potential difference (PD) of the thickness direction of liquid crystal display cells becomes.As mentioned above, because pixel electrode 6 has peristome 6a with gate line 12 and storage capacitor electrode 9 respectively in the folded zone of insulation body weight, so when the potential difference (PD) of the thickness direction of liquid crystal display cells becomes big like this, concentrate at the electric field that the periphery generation of each peristome 6a is stronger.Its result, the liquid crystal molecule that is configured in these peristomes 6a periphery becomes transition kernel, can successfully carry out order-disorder and shift.

When source electrode line 11 and gate line 12 were applied transfer voltage, it is big that the potential difference (PD) of the thickness direction of liquid crystal display cells becomes equally.As mentioned above, because source electrode line 11 has peristome 11a with gate line 12 in the folded zone of insulation body weight, so when the potential difference (PD) of the thickness direction of liquid crystal display cells becomes big like this, peripheral electric field at each peristome 11a is produced concentrate.Its result makes the liquid crystal molecule that is configured in these peristomes 11a periphery become transition kernel, can successfully carry out order-disorder and shift.

In addition, similarly to Example 1, above-mentioned peristome 6a and the width of peristome 11a are less than 4 μ m.Like this, can produce stronger electric field concentrates.In addition, peristome 6a and peristome 11a can not be rectangles also, also can be that Figure 12 is to shape shown in Figure 15.

Like this, pixel electrode 6 has a plurality of peristome 6a in the present embodiment, and source electrode line 11 also has peristome 11a.Become transition kernel owing to be configured in the liquid crystal molecule of these peristomes 6a and peristome 11a, so compare with embodiment 1, the number of transition kernel increases.Therefore, carrying out order-disorder in the time of can be than embodiment 1 more reliably shifts.

(embodiment 5)

Embodiments of the invention 5 are by the pixel electrode that the inside at array base palte forms notch to be set, and can carry out the example of the liquid crystal indicator of order-disorder transfer reliably.

Figure 20 is the planimetric map of the structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.As shown in figure 20, similarly to Example 4, an one of the both ends of pixel electrode 6 is outstanding to this gate line 12 respectively overlappingly with gate line 12.With gate line 12 overlapping areas of this outshot in a plurality of notch 6b are set.Therefore, this outshot forms pectination.The width of these notchs 6b is less than 4 μ m.

In addition, because other structure is identical during with embodiment 1, do not explain so enclose same label.

By such structure, when applying embodiment 1 described transfer voltage, it is big that the potential difference (PD) of the thickness direction of liquid crystal display cells becomes.As mentioned above, because pixel electrode 6 has notch 6b with gate line 12 in the folded zone of insulation body weight, so when the potential difference (PD) of the thickness direction of liquid crystal display cells becomes big like this, produce electric field at the periphery of each notch 6b and concentrate.Therefore, the liquid crystal molecule that is configured in these notchs 6b periphery becomes transition kernel, can successfully carry out order-disorder and shift.

In addition, in the present embodiment, though pixel electrode 6 with storage capacitor electrode 9 overlapping areas in peristome is not set, also such peristome can be set.In addition, also can be similarly to Example 4, source electrode line 11 with gate line 12 overlapping areas in peristome is set.

In the present embodiment, form a plurality of notch 6b in the end of pixel electrode 6, but this notch number also can be 1.

(embodiment 6)

Embodiments of the invention 6 are by storage capacitor electrode and gate line that the inside at array base palte forms notch to be set respectively, can carry out the example of the liquid crystal indicator of order-disorder transfer reliably.

Figure 21 is the planimetric map of the structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.Figure 22 is that the XXII-XXII of Figure 20 is to pseudosection.Among Figure 22, for convenience, omitted the textural element that is arranged on the storage capacitor electrode top.

As Figure 21 and shown in Figure 22, liquid crystal cell 101 has filter substrate 102 and the array base palte 103 across pad (not shown) arranged opposite.In addition, because the structure of this filter substrate 102 is identical during with embodiment 1, do not explain so enclose same label.

Array base palte 103 has glass substrate 10.On glass substrate 10, be formed with pixel electrode 6, be formed with the insulation course 19 that covers this pixel electrode 6.

On relevant insulation course 19, be formed with wiring layer 25.This wiring layer 25 is cross one another gate line 12 and source electrode line 11, storage capacitor electrode 9 by assortment and is used to prevent that the insulator of conducting between these electrodes from constituting.More specifically get on very well, on above-mentioned insulation course 19, form source electrode line 11, and be formed with the insulation course 7 that covers this source electrode line 11.In addition, on this insulation course 7, form gate line 12 and storage capacitor electrode 9, and form the alignment films 5 that covers these gate lines 12 and storage capacitor electrode 9.

Similarly to Example 1, storage capacitor electrode 9 is configured between each gate line 12.Pixel electrode 6 is configured in the pixel region that separates with gate line 12 and source electrode line 11.Therefore, storage capacitor electrode 9 has across insulation course 7,19 and pixel electrode 6 overlapping areas.And, in this zone, form a plurality of notch 9b.

One one of the both ends of above-mentioned pixel electrode 6 is outstanding to this gate line 12 respectively overlappingly with gate line 12.Gate line 12 with the outshot overlapping areas of above-mentioned pixel electrode 6 in a plurality of notch 12b are set.

Similarly to Example 1, the width of above-mentioned notch 9b, 12b is less than 4 μ m.

In addition, because other structure is identical during with embodiment 1, do not explain so enclose same label.

As above in the liquid crystal indicator of the present embodiment of Gou Chenging, when applying embodiment 1 described transfer voltage, it is big that the potential difference (PD) of the thickness direction of liquid crystal display cells becomes.As mentioned above, because storage capacitor electrode 9 has notch 9b with pixel electrode 6 in the folded zone of insulation body weight, gate line 12 has notch 12b in same overlapping areas, so when the potential difference (PD) of the thickness direction of liquid crystal display cells becomes big like this, concentrate at the electric field that the periphery generation of notch 9b, 12b is stronger.Its result can carry out order-disorder reliably and shift, and can realize not having the preferable image display of point defect.

In addition, in the present embodiment, 9 of gate line 12 and storage capacitor electrode with pixel electrode 6 overlapping areas in notch is set, but also can with source electrode line 11 overlapping areas in same notch is set.In addition, also can replace these notchs and peristome is set.

(embodiment 7)

Among the embodiment 1 to embodiment 6, the electrode that forms in the inside of array base palte is provided with peristome or notch.Different therewith, embodiments of the invention 5 are by the auxiliary electrode that the inside in counter substrate (filter substrate) forms peristome to be set, and can carry out the example of the liquid crystal indicator of order-disorder transfer reliably.

Figure 23 is the sectional view of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.As shown in figure 23, liquid crystal cell 101 has filter substrate 102 and the array base palte 103 across pad (not shown) arranged opposite.In addition, since same when the structure of this array base palte 103 and embodiment 1, do not explain so enclose same label.

Below the opposite electrode 2 that the inside of this filter substrate 102 forms, form auxiliary electrode 51 across insulation course 52.The shape of this auxiliary electrode 51 is roughly the same with the shape of the pixel electrode 6 that forms in the inside of array base palte 103, and is same with this pixel electrode 6, disposing in the mode that is positioned in each pixel region of being divided by gate line 11 and source electrode line.And form alignment films 3 in the mode that covers these auxiliary electrodes 51 and insulation course 52.

As mentioned above, the shape of the shape of auxiliary electrode 51 and pixel electrode 6 is roughly the same, is formed with the rectangular aperture portion 51a of width less than 4 μ m near in the central.Whole of auxiliary electrode 51 is overlapping with opposite electrode 2, this peristome 51a naturally be formed on opposite electrode 2 overlapping areas in.Similarly to Example 1, being not limited to rectangle about the shape of peristome 51a, can be Figure 12 to shape shown in Figure 15 etc.

In addition, because other structure is identical during with embodiment 1, do not explain so enclose same label.

As above in the liquid crystal indicator of the present embodiment of Gou Chenging, when applying embodiment 1 described transfer voltage, it is big that the potential difference (PD) of the thickness direction of liquid crystal display cells becomes.As mentioned above, because auxiliary electrode 51 has peristome 51a with opposite electrode 2 in the folded zone of insulation body weight, so the potential difference (PD) of the thickness direction of liquid crystal display cells becomes big like this, and, when auxiliary electrode 51 is applied the voltage different with opposite electrode 2, produce stronger electric field at the periphery of each peristome 51a and concentrate.Its result, the liquid crystal molecule that is configured in these peristomes 51a periphery becomes transition kernel, can successfully carry out order-disorder and shift.

As mentioned above, in the liquid crystal indicator of present embodiment, owing to each auxiliary electrode 51 is set in each pixel, so have transition kernel in each pixel.Therefore, pixel that can residual orderly state of orientation can realize preferable image display.

In addition, by producing transition kernel in counter substrate (filter substrate) side like this, compare, have more transition kernel with the situation that only produces transition kernel in the array base palte side.Therefore, can further strengthen the reliability that order-disorder shifts.

(embodiment 8)

Embodiments of the invention 8 are by the opposed part in array base palte and counter substrate projection to be set, and can carry out the example of the liquid crystal indicator of order-disorder transfer reliably.

Figure 24 is the sectional view of primary structure of thyristor (TFT) part of the liquid crystal display cells that has of the liquid crystal indicator of this enforcement of modal representation.As shown in figure 24, liquid crystal cell 101 has across the filter substrate 102 of pad 61 arranged opposite and has array base palte 103 as the TFT13 of thyristor.

Array base palte 103 has glass substrate 10.Form gate line 12 above the glass substrate 10 at this, and be formed with the insulation course 65 that covers this gate line 12.Be formed with TFT13 and pixel electrode 6 above the insulation course 65 at this.

The position of the corresponding gate line 12 of relevant TFT13 sets, by being formed for being electrically connected this active semiconductor layer 64, source electrode 111 and 14 the N+a-Si layer 63 of draining constitutes on the active semiconductor layer 64 that is made of amorphous silicon (a-Si).At this, source electrode 111 is to be connected with source electrode line, and the electrode of signal voltage is provided from this source electrode line.In addition, this TFT13 is by diaphragm 62 protections.

On the other hand, filter substrate 102 constitutes by stacking gradually formation glass substrate 1, color-filter layer 21, transparency electrode (opposite electrode) 2 and alignment films 3.Color-filter layer 21 is made of the color filter of all kinds of red, green, blue look and the black matrix layer that is arranged on these color filter edges.

Form in the opposed position of the TFT13 below above-mentioned opposite electrode 2 towards the side-prominent protuberance 66 of array base palte 103.This protuberance 66 for example adopts epoxies photoresist etc. to form suitable size.At interval the thickness of 4b is littler than the thickness of the box interval 4a of the position that does not form these to have formed the box of position of relevant protuberance 66 and TFT13.

As above in the liquid crystal indicator of the present invention of Gou Chenging, when applying embodiment 1 described transfer voltage, the 4b periphery produces concentrated electric field at the box interval.Therefore, the liquid crystal molecule that is configured in this box interval 4b periphery becomes transition kernel, can carry out order-disorder reliably and shift.Therefore, can realize not having the high-quality liquid crystal indicator of point defect.

In the present embodiment, the TFT13 that protuberance 66 that employing filter substrate 102 has and array base palte 103 have forms narrower box clearance space, but is not limited to such structure.That is, also can constitute,, form narrower box clearance space same protuberance being set with the opposed position of the raised part of filter substrate 102 by for example the protuberance different with TFT13 being set at array base palte 103.

(embodiment 9)

Embodiments of the invention 9 are that opposed each end by the pixel adjacent electrode that forms in array base palte the inside is provided with notch, can carry out the example of the liquid crystal indicator that order-disorder shifts reliably.

Figure 25 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.Below, for convenience, adopt pixel electrode 6A in the pixel electrode 6 and describe at the length direction pixel adjacent electrode 6B of source electrode line 11 with this pixel electrode 6A.

As shown in figure 25, pixel electrode 6A is configured to an end and gate line 12 is overlapping, is formed on a plurality of projection 6c of the length direction projection of source electrode line 11 at the other end.Outstanding towards gate line 12 overlappingly with end and the gate line 12 of the opposed pixel electrode 6B in end that is provided with this projection 6c.Also have, with gate line 12 overlapping areas of this outshot in be formed with and above-mentioned a plurality of projection 6c corresponding concave part 6d.

Similarly to Example 1, pixel electrode 6 and gate line 12 are overlapping across insulation course.

In addition, same during owing to other structure and embodiment 1, do not explain so enclose same label.

As above in the liquid crystal indicator of the present embodiment of Gou Chenging, when applying embodiment 1 described transfer voltage, it is big that the potential difference (PD) of the thickness direction of liquid crystal display cells becomes.As mentioned above, because projection 6c and be set to gate line 12 overlappingly corresponding to the recess 6d of this projection 6c concentrates electric field so produce at this projection 6c with corresponding to the periphery between the recess 6d of this projection 6c.Therefore, be configured in this projection 6c and become transition kernel, can carry out order-disorder reliably and shift corresponding to the liquid crystal molecule of the periphery between the recess 6d of this projection 6c.Therefore, can realize not having the high-quality liquid crystal indicator of point defect.

In the present embodiment 9, if make the polarity of voltage of two pixel electrode 6A, 6B imposing on adjacency respectively opposite (promptly, when pixel electrode 6A is applied positive polarity voltage, 6B applies reverse voltage to pixel electrode), shown in arrow 110 and arrow 120, between two pixel electrode 6A, 6B of adjacency, shown in arrow 110 and 120, the transverse electric field that produces both direction is it seems on the plane.Same with the explanation of Figure 11, like this, between two pixel electrode 6A, 6B of adjacency the elastic deformation energy quantitative change of liquid crystal molecule big, its as a result negative energy become big.Like this, can successfully carry out order-disorder shifts.

In addition, as mentioned above, periphery between projection 6c and recess 6d produces electric field and concentrates, but it is stronger for this electric field is concentrated, short more good more, still between these projections 6c and recess 6d apart from 6e, if it is too short apart from 6e, then owing to producing short circuit between each pixel electrode, so in fact there be certain restriction.Particularly, between projection 6c and recess 6d apart from 6e more preferably greater than 4 μ m, less than 8 μ m.

In addition, also complanation layer can be set similarly to Example 2, in the array base palte side color-filter layer be set similarly to Example 3.

(embodiment 10)

Embodiments of the invention 10 are different with embodiment 9, by between the main body of pixel electrode and end pars intermedia being set, can carry out the example of the liquid crystal indicator that order-disorder shifts reliably.

Figure 26 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.Below, for convenience, adopt pixel electrode 6A in the pixel electrode 6 and describe at the length direction pixel adjacent electrode 6B of source electrode line 11 with this pixel electrode 6A.

As shown in figure 25, pixel electrode 6A is configured to an end and storage capacitor electrode 9 is overlapping, is formed on a plurality of projection 6c of the length direction projection of source electrode line 11 at the other end.Outstanding towards storage capacitor electrode 9 overlappingly with end and the storage capacitor electrode 9 of the opposed pixel electrode 6B in end that is provided with this projection 6c.Also have, with storage capacitor electrode 9 overlapping areas of this outshot in be formed with and above-mentioned a plurality of projection 6c corresponding concave part 6d.

Similarly to Example 1, pixel electrode 6 and storage capacitor electrode 9 are overlapping across insulation course.

The pars intermedia that is provided with between main body, end and these main bodys and the end of pixel electrode 6 by this pixel electrode constitutes.The width 6f of this pars intermedia 601 is littler than the width of the main body of pixel electrode 6 and end, is specially 10 μ m.

In addition, same during owing to other structure and embodiment 9, do not explain so enclose same label.

The memory capacitance that forms between projection 6c that forms in the end of each pixel electrode 6 and the recess 6d is according to the width and the length variations of above-mentioned pars intermedia 601.Therefore, by the width of how much adjusting pars intermedia 601 and length according to the memory capacitance that forms in each pixel, the memory capacitance balance that can make the memory capacitance that between projection 6c and recess 6d, generates and generate because of other textural element.

As above in the liquid crystal indicator of the present embodiment of Gou Chenging, when applying embodiment 1 described transfer voltage, similarly to Example 9, produce concentrated electric field at this projection 6c with corresponding to the periphery between the recess 6d of this projection 6c.Therefore, the liquid crystal molecule that is configured in the periphery between this projection 6c and recess 6d becomes transition kernel, can carry out order-disorder reliably and shift.Therefore, can realize not having the high-quality liquid crystal indicator of point defect.

(embodiment 11)

Embodiments of the invention 11 are by the opposite electrode that forms in the counter substrate the inside peristome to be set, and can carry out the example of the liquid crystal indicator of order-disorder transfer reliably.

Figure 27 is the planimetric map of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.Figure 28 is that the XXVIII-XXVIII of Figure 27 is to pseudosection.The position relation of black matrix layer 22 and opposite electrode 2 only is shown among Figure 27, has omitted other structure.

As Figure 27 and shown in Figure 28, liquid crystal cell 101 has filter substrate 102 and the array base palte 103 across pad (not shown) arranged opposite.In addition, because the structure of this array base palte 103 is identical during with embodiment 1, do not explain so enclose same label.

Filter substrate 102 has glass substrate 1.Formation color-filter layer 21 below this glass substrate 1.Particularly, form red color filter 21R, green color filter 21G and blue color filter 21B, be formed with the black matrix layer 23 of electric conductivity at color filter of all kinds edge respectively.

Stacked formation opposite electrode 2 and alignment films 3 below this color-filter layer 21.At this, this opposite electrode 2 is divided into each pixel column so that can apply voltage to each pixel column, set into the black matrix layer 23 of 2 of each opposite electrodes and electric conductivity overlapping.Below, for convenience, adopt opposite electrode 2A in the opposite electrode 2 and describe at the opposite electrode 2B of gate line (not shown) length direction adjacency with this opposite electrode 2A.

Opposite electrode 2A is outstanding respectively towards opposite electrode 2B side by its part of each pixel.The shape of these outshots is identical with the end shape of the pixel electrode 6 of embodiment 10.That is, above-mentioned outshot has at the outstanding a plurality of projection 2c of the length direction of gate line.Make and to be provided with the outshot of this projection 2c opposed, electrode 2B is outstanding respectively towards opposite electrode 2A side by its part of each pixel.These outshots have the recess 2d corresponding to above-mentioned projection 2c.In addition, the main body that connects these outshots and opposite electrode 2A, 2B respectively at pars intermedia 201.

In addition, in the present embodiment, color-filter layer 21 also serves as the insulator of 23 of opposite electrode 2 and black matrix layer.

As above in the liquid crystal indicator of the present embodiment of Gou Chenging, apply embodiment 1 described transfer voltage, and when black matrix layer 23 is applied the transfer voltage different with opposite electrode 2, produce at projection 2c with corresponding to the periphery between the recess 2d of this projection 2c and to concentrate electric field.Therefore, be configured in this projection 2c and become transition kernel, can carry out order-disorder reliably and shift corresponding to the liquid crystal molecule of the periphery between the recess 2d of this projection 2c.Thereby, can realize not having the high-quality liquid crystal indicator of point defect.

In addition, by producing transition kernel in counter substrate (filter substrate) side like this, compare, have more transition kernel with the situation that only produces transition kernel in the array base palte side.Thereby, can further strengthen the reliability that order-disorder shifts.

(embodiment 12)

Embodiments of the invention 12 are examples of the different liquid crystal indicator of shape and the embodiment 10 of pixel electrode end.

Figure 29 is the planimetric map of an example of the structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.As shown in figure 28, same during with embodiment 10 in the liquid crystal indicator of present embodiment, pixel electrode 6 is made of the pars intermedia 601 between main body, end and these main bodys and end, and the width of this pars intermedia 601 is littler than the width of main body and end.Below, for convenience, adopt pixel electrode 6A in the pixel electrode 6 and describe at the length direction pixel adjacent electrode 6B of source electrode line 11 with this pixel electrode 6A.

Pixel electrode 6A is configured to an end and storage capacitor electrode 9 is overlapping, is formed on the outstanding a plurality of projection 6c of length direction of source electrode line 11 at the one end.These projections 6c forms zigzag, is configured to the long limit 6g of this projection 6c and the direction of minor face 6h extension and the length direction of gate line 12 and has predetermined angular.

In addition, end and the storage capacitor electrode 9 with the opposed pixel electrode 6B in end that is provided with this projection 6c is outstanding towards storage capacitor electrode 9 overlappingly.With storage capacitor electrode 9 overlapping areas of this outshot in form and above-mentioned a plurality of projection 6c corresponding concave part 6d.

In addition, similarly to Example 1, pixel electrode 6 and storage capacitor electrode 9 are overlapping across insulation course.

In addition, because other structure is identical during with embodiment 9, do not explain so enclose same label.

When the long limit 6g of the projection 6c that forms in the end of pixel electrode 6A or the direction that minor face 6h extends are identical with the orientation process direction that alignment films is implemented, produce the strongest electric field at liquid crystal layer.Therefore, the direction that this length limit 6g or minor face 6h are extended is consistent with the orientation process direction that alignment films is implemented.Like this, can produce stronger electric field intensity, its result can carry out order-disorder more reliably and shift.

In addition, by make the viewing angle characteristic difference according to position of display image, can realize preferable image display as a whole.Under these circumstances, by changing the orientation process direction, make the viewing angle characteristic difference mostly according to this position of display image.Thereby under these circumstances, for example by utilizing pixel to change the long limit 6g of above-mentioned projection 6c or the bearing of trend of minor face 6h, the direction of can adaptation orientation handling changes.

(embodiment 13)

Embodiments of the invention 13 are examples of the different liquid crystal indicator of shape and the embodiment 10 of pixel electrode end.

Figure 30 is the planimetric map of an example of the primary structure of the liquid crystal display cells that has of the liquid crystal indicator of modal representation present embodiment.As shown in figure 30, same during with embodiment 8 in the liquid crystal indicator of present embodiment, pixel electrode 6 is made of the pars intermedia 601 between main body, end and these main bodys and end, and the width of this pars intermedia 601 is littler than the width of main body and end.Below, for convenience, adopt pixel electrode 6A in the pixel electrode 6 and describe at the length direction pixel adjacent electrode 6B of source electrode line 11 with this pixel electrode 6A.

Pixel electrode 6A is outstanding respectively towards storage capacitor electrode 9, this outshot is configured to storage capacitor electrode 9 overlapping respectively, one of these both ends with storage capacitor electrode 9 overlapping areas in form towards the outstanding a plurality of projection 60a of the length direction of this storage capacitor electrode 9.

Outstanding towards storage capacitor electrode 9 overlappingly with end and the storage capacitor electrode 9 of the opposed pixel electrode 6B in end that is provided with this projection 60a.With storage capacitor electrode 9 overlapping areas of this outshot in form and above-mentioned a plurality of projection 60a corresponding concave part 60b.

In addition, similarly to Example 1, pixel electrode 6 and storage capacitor electrode 9 are overlapping across insulation course.

In addition, because other structure is identical during with embodiment 9, do not explain so enclose same label.

In the liquid crystal indicator of the present embodiment that as above constitutes, when applying embodiment 1 described transfer voltage, similarly to Example 9, produce concentrated electric field at projection 60a with corresponding to the periphery between the recess 60b of this projection 60a.Therefore, the liquid crystal molecule that is configured in the periphery between this projection 60a and the recess 60b becomes transition kernel, can carry out order-disorder reliably and shift.Thereby, can realize not having the high-quality liquid crystal indicator of point defect.

(embodiment 14)

Embodiments of the invention 14 are field sequential color systems, can carry out the example of the liquid crystal indicator of order-disorder transfer reliably.

Figure 31 is the sectional view of structure of the liquid crystal indicator of modal representation present embodiment.As shown in figure 31, the liquid crystal indicator of present embodiment has liquid crystal display cells 100 and is configured in the back of the body irradiation 70 of the below of this liquid crystal display cells 100.At this, this liquid crystal display cells 100 is embodiment 1 to embodiment 13 described display elements.

Back of the body irradiation 70 constitute comprise the light guide plate 72 that constitutes by transparent rectangle synthetic resin board, near an end face 72a of this light guide plate 72 in the face of the light source 71 of this end face 72a configuration, at the reflecting plate 73 of configuration below the light guide plate 72 and the diffusion disk 74 that on light guide plate 72, is provided with.

Above-mentioned light source 71 be successively repeatedly assortment send the led array of LED of each coloured light of 3 primary colors of red, green, blue.

In the back of the body irradiation 70 that as above constitutes, the light that light source 71 sends incides light guide plate 72 from end face 72a.The light of this incident is in repeatedly scattering and the whole surface launching of face from it of the inside of light guide plate 72.At this moment, the light that drains to below the light guide plate 72 and incide reflecting plate 73 plate 73 reflections that are reflected turn back in the light guide plate 72.In diffusion disk 74 diffusions, the light of this diffusion incides liquid crystal display cells 100 from the light of light guide plate 72 emission.Like this, red, green or blue light shines whole liquid crystal display cells 100 equably.

Like this in the liquid crystal indicator of the present embodiment of Gou Chenging, control circuit (not shown) the irradiation 70 output control signals that support or oppose are so that send red, green, blue as the LED of the light source of back of the body irradiation 70 successively with specified period.In addition, in order luminously to show synchronously with this, same control circuit is exported control signal according to the picture signal of outside input respectively to gate driver (not shown) and Source drive (not shown).Its result, gate driver applies the scanning voltage signal TFT of each pixel of conducting successively to gate line, and on the other hand, Source drive and this timing as one man impose on image signal voltage the pixel electrode of each pixel successively by source electrode line.Like this, liquid crystal molecule is modulated, and the light transmission of back of the body irradiation 70 emissions changes, and the people who observes this liquid crystal indicator sees the image of corresponding image signals.

As mentioned above, the liquid crystal indicator of present embodiment is the device of so-called field sequential color system.Under the situation of the liquid crystal indicator of field sequential color system, owing to during being divided into a plurality of subframes 1 image duration, show, so when the response speed of liquid crystal display cells is slow, can not obtain preferable image display.For this point, under the situation of the liquid crystal indicator of present embodiment, but owing to have the ocb mode liquid crystal display element 100 of high-speed response, so can realize preferable image display with field sequential color system.

As mentioned above, the liquid crystal display cells shown in the embodiment 1 to embodiment 13 can carry out the order-disorder transfer reliably.Therefore, the liquid crystal indicator of present embodiment can obtain not having the preferable image display of defective.

(embodiment 15)

Embodiments of the invention 15 are by with gate line source electrode being set overlappingly, can carrying out the example of the liquid crystal indicator of order-disorder transfer reliably.In addition, the structure of the liquid crystal indicator of present embodiment is owing to except reference Figure 32 dot structure described later, and is identical with embodiment 1, so do not explain.

Figure 32 is the planimetric map of an example of the dot structure that has of the liquid crystal indicator of modal representation present embodiment.Shown in figure 32, be provided with source electrode line 11 source electrode 111 that is connected, signal voltage is provided from this source electrode line 11.This source electrode 111 is set to extend in parallel with the length direction of gate line 12, and is overlapping through insulator (not shown) and gate line 12.The signal voltage that offers this source electrode 111 offers pixel electrode 6 through drain electrode.In addition, above source electrode line 11, dispose liquid crystal layer (not shown).Thereby source electrode 111 is set to be clipped between gate line 12 and the liquid crystal layer.

Above-mentioned source electrode 111 with gate line 12 overlapping areas in have bend.In the liquid crystal indicator of the present embodiment of Gou Chenging, when applying transfer voltage described later, produce concentrated electric field like this at bend and the periphery between the pixel electrode 6 that source electrode 111 has.Therefore, the liquid crystal molecule that is configured in the periphery between this bend and the pixel electrode 6 becomes transition kernel, can carry out order-disorder reliably and shift.

Below, illustrate present embodiment liquid crystal indicator the transfer voltage waveform and apply the mode of this transfer voltage.

Figure 33 is the figure of transfer voltage waveform of the liquid crystal indicator of this enforcement of expression.As shown in figure 33, in the liquid crystal indicator of present embodiment, to each gate line 12a, 12b, 12c ... apply 1 second as grid conducting current potential+15V.Apply 1 second+25V voltage equally for opposite electrode 2.During this time, source electrode line 11 is applied the ac square-wave voltage of magnitude of voltage ± 7V, frequency 30Hz (field frequency), dutycycle 50%.More specifically get on very well, similarly to Example 1, source electrode line 11 is applied voltage, so that through source electrode line 11A, the 11C of odd column ... input to each pixel electrode .6Aa, 6Cc ... ac square-wave voltage polarity and through source electrode line 11B, the 11D of even column ... input to each pixel electrode 6Bb, 6Dd ... ac square-wave voltage polarity opposite.

When applying transfer voltage like this,, shifts bigger liquid crystal indicator even also can carrying out order-disorder equably.This is that its result has improved homogeneity because the voltage that imposes on liquid crystal for exchanging, produces unsettled " interference ".In addition, establishing field frequency at this is 30Hz, but is not limited thereto, personnel's the research according to the present invention, and its frequency is preferably less than 1kHz.

Also can adopt the transfer voltage of waveform shown in Figure 34.That is, different with situation shown in Figure 33, by source electrode line 11 is remained on the 0V current potential, pixel electrode 6 is not applied voltage, apply 1 second-25V voltage for opposite electrode 2.Like this, the current potential former state of source electrode line 11 is kept 0V and do not change, can not carry out easily so rely on Source drive.At this moment, same with the situation of the transfer voltage that adopts waveform shown in Figure 33, can carry out order-disorder reliably and shift.But, in face, see the unevenness that order-disorder shifts a little, compare with the situation of Figure 33, produce order-disorder and shift required voltage high 2 to 3V.

At this, the polarities of potentials that personnel of the present invention have found to apply to opposed voltage 2 occasion with grid conducting polarities of potentials identical and different occasion are (for example, give opposite electrode 2 apply-25V, gate line 12 is applied+15V) compares as grid conducting current potential, more be easy to generate order-disorder and shift.Think that this is because the occasion different with polarity compared, produce stronger transverse electric field when polarity is identical, promote to take place order-disorder and shift.

In addition, also can adopt the transfer voltage of waveform shown in Figure 35.That is, described such with reference 9, to each gate line 12a, 12b, 12c ... apply successively as grid conducting current potential+15V, apply 1 second-25V voltage for opposite electrode 2.During this time, source electrode line 11 is applied the ac square-wave voltage of magnitude of voltage ± 7V, frequency 30Hz (field frequency), dutycycle 50%.At this moment, because the same driving grid line 12 of occasion that shows with common image, so the gate driver that can adopt general liquid crystal indicator (for example TN mode LCD etc.) to have can adopt cheap structure.

In the present embodiment, same during with embodiment 1, apply transfer voltage just before, be preferably between pixel electrode 6 and the opposite electrode 2 and do not apply voltage.

In addition, in the above-mentioned explanation, for example understand liquid crystal indicator with ocb mode liquid crystal display element, but the invention is not restricted to this, the state of orientation that also can be used to have the state of orientation of show state and non-show state is different, needs to be initialized to from the state of orientation of non-show state the liquid crystal indicator of liquid crystal display cells of the state of orientation of show state before display image.

As mentioned above, liquid crystal indicator of the present invention can obtain not having the preferable image display of point defect.These liquid crystal indicators can be applicable to various products.That is LCD of liquid crystal TV set, LCD monitor or portable phone etc. for example.

As mentioned above,, generate transition kernel, shift, can obtain not having the preferable image display of point defect so can carry out order-disorder reliably owing to can concentrate by the generation electric field according to liquid crystal indicator of the present invention.

Claims (22)

1. liquid crystal indicator, it is characterized in that having: opposed a pair of substrate, a liquid crystal layer, this liquid crystal layer is configured between the above-mentioned a pair of substrate, state of orientation in show state is different with state of orientation in the non-show state, makes image must be initialised to the state of orientation of show state before showing from the state of orientation of non-show state;

Also have: be arranged on first electrode on any one substrate in the above-mentioned a pair of substrate; With

Be configured in second electrode between above-mentioned first electrode and the above-mentioned liquid crystal layer;

Produce potential difference (PD) and carry out above-mentioned initialized drive unit by making between above-mentioned first electrode and above-mentioned second electrode;

The end that two above-mentioned second electrodes that adjoin each other face one another overlaps each other across insulator and above-mentioned first electrode.

2. liquid crystal indicator as claimed in claim 1, it is characterized in that, on another substrate different with the substrate that is provided with described first electrode opposite electrode is set, described drive unit carries out described initialization by produce potential difference (PD) between described opposite electrode and described second electrode.

3. liquid crystal indicator as claimed in claim 2 is characterized in that, when described drive unit carries out described initialization described first electrode and described opposite electrode is applied the voltage with same potential.

4. liquid crystal indicator as claimed in claim 1, it is characterized in that, form the notch that is made of the continuous convex-concave that forms on the opposed end of described two described second electrodes that adjoin each other respectively, described notch overlaps with first electrode via described insulator.

5. liquid crystal indicator as claimed in claim 4 is characterized in that described notch is formed with a plurality of.

6. liquid crystal indicator as claimed in claim 1, it is characterized in that, the opposed end of described two described second electrodes that adjoin each other overlaps and gives prominence to described first electrode, in the zone that overlaps with described first electrode of described outstanding part the notch that is made of the continuous convex-concave that forms is set.

7. liquid crystal indicator as claimed in claim 6 is characterized in that, described outstanding part forms pectination.

8. liquid crystal indicator as claimed in claim 1 is characterized in that:

In the above-mentioned end one with the above-mentioned first electrode overlapping areas in have projection, another with the above-mentioned first electrode overlapping areas in have corresponding above-mentioned projection recess.

9. liquid crystal indicator as claimed in claim 8 is characterized in that, the polarity of the voltage that applies respectively on two described second electrodes of described adjacency when carrying out described initialization is opposite.

10. liquid crystal indicator as claimed in claim 1 is characterized in that:

Distance between above-mentioned projection and above-mentioned recess is greater than 4 μ m and less than 8 μ m.

11. as described in claim 8, described projection is provided with a plurality of.

12. liquid crystal indicator as claimed in claim 8 is characterized in that:

Above-mentioned projection is a zigzag.

13. liquid crystal indicator as claimed in claim 1 is characterized in that:

Substrate in the above-mentioned a pair of substrate is an array base palte, and this array base palte has: be configured to rectangular a plurality of pixel electrodes, hand over and a plurality of gate lines of assortment and multiple source polar curve, be provided with and according to a plurality of on-off elements of conduction and cut-off between the drive signal switching pixel electrodes by above-mentioned gate line supplied with and above-mentioned source electrode line corresponding with above-mentioned each pixel electrode mutually;

Another substrate in the above-mentioned a pair of substrate is the counter substrate that has with the opposed opposite electrode of above-mentioned array base palte.

14. liquid crystal indicator as claimed in claim 13 is characterized in that having:

Storage capacitor electrode, above-mentioned first electrode overlapping with pixel electrodes are that above-mentioned storage capacitor electrode, above-mentioned second electrode are pixel electrodes.

15. liquid crystal indicator as claimed in claim 13 is characterized in that:

Above-mentioned first electrode is a gate line, and above-mentioned second electrode is a pixel electrodes.

16. liquid crystal indicator as claimed in claim 1 is characterized in that:

Above-mentioned insulator is a color filter.

17. liquid crystal indicator as claimed in claim 1 is characterized in that:

Above-mentioned insulator is a complanation layer.

18. liquid crystal indicator as claimed in claim 1 is characterized in that:

Between above-mentioned second electrode body and above-mentioned end, form the pars intermedia of its width less than aforementioned body and above-mentioned end width.

19. liquid crystal indicator as claimed in claim 13 is characterized in that:

Above-mentioned first electrode is formed by conductive light shielding film, and above-mentioned second electrode is above-mentioned opposite electrode

20. liquid crystal indicator as claimed in claim 1 is characterized in that:

Above-mentioned potential difference (PD) greater than 15V less than 32V.

21. liquid crystal indicator as claimed in claim 1 is characterized in that:

Each pixel electrode of adjacency is applied the voltage of opposed polarity.

22. liquid crystal indicator as claimed in claim 1 is characterized in that:

The state of orientation of above-mentioned non-show state is to be orientated in order, and the state of orientation of above-mentioned show state is a disordered orientation.

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