CN101008750A - Liquid crystal apparatus and electronic device - Google Patents
Liquid crystal apparatus and electronic device Download PDFInfo
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- CN101008750A CN101008750A CN 200710008278 CN200710008278A CN101008750A CN 101008750 A CN101008750 A CN 101008750A CN 200710008278 CN200710008278 CN 200710008278 CN 200710008278 A CN200710008278 A CN 200710008278A CN 101008750 A CN101008750 A CN 101008750A
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Abstract
The invention provides a FFS liquid crystal device for realizing a high aperture ratio. The liquid crystal device is provided with a FFS displaying model. The component substrate as element of the device is provided with: LTPS-type TFT elements and source lines, a second insulating film (planarized film) with flatness arranged at least on the source lines and the LTPS-type TFT elements, a common electrode arranged as a face shape roughly on the planarized film, a third insulating film (dielectric film) arranged on the common electrode, and a pixel electrode, with a plurality of grooves, arranged on the dielectric film and passing through an occurring edge field of each groove between the common electrode. Thus the pixel electrode, the dielectric film and the common electrode are planarized; the electrode part in each overlapped pixel region is not concavo-convex-shape (ladder shape) when being seen from the pixel electrode and the common electrode; and the pixel electrode is extended to the source line and the switch component to realize high aperture ratio.
Description
Technical field
The present invention relates to be applicable to the liquid-crystal apparatus and the electronic equipment of the demonstration of carrying out various information.
Background technology
Generally, if the display mode to liquid crystal is roughly distinguished, then exist: TN (twisted-nematic: mode Twisted Nematic), be the vertical orientation mode of purpose with wide visual field angle and high-contrast perhaps, perhaps (coplane conversion: In-Plane Switching) (fringing field switches: the lateral electric field type etc. that Fringe Field Switching) is representative for mode or FFS mode with IPS.
IPS mode is to make the direction of the electric field that puts on liquid crystal and the mode of substrate almost parallel among this, compares with TN mode etc. to have the advantage that can improve viewing angle characteristic.
But, in such liquid-crystal apparatus, generally by ITO (indium tin oxide: the pixel electrode of etc. transparent conductive material formation Indium TinOxide), and and this pixel electrode between produce the transverse electric field common electrode be set at identical layer, so exist the liquid crystal molecule of the upside be positioned at pixel electrode fully to be driven, cause the problem of the reduction of transmitance etc.
In contrast to this, in the FFS mode, be set at the downside of the layer that is formed with pixel electrode owing to the layer that is formed with common electrode, so can also apply the electric field of transverse direction to the liquid crystal molecule of the upside that is positioned at pixel electrode, can fully drive the liquid crystal molecule that is present in this position.Its result compares with above-mentioned IP S mode has the advantage that can improve transmitance etc.
One example of the liquid-crystal apparatus of such FFS mode is documented in patent documentation 1 and 2.
Patent documentation 1: the spy opens the 2001-235763 communique
Patent documentation 2: the spy opens the 2002-182230 communique
But, in the liquid-crystal apparatus of in above-mentioned patent documentation 1, putting down in writing, having concavo-convex shape with the part of overlapping pixel electrode such as TFT element, common electrode line is stairstepping, so the orientation at this position liquid crystal molecule takes place chaotic, this position becomes and can not therefore have the problem of aperture opening ratio reduction substantially to showing contributive zone.
Summary of the invention
The present invention considers above problem points and proposes that purpose is to provide the liquid-crystal apparatus of the FFS mode that can realize high aperture and uses its electronic equipment.
One of the present invention, it is characterized in that, possess: the substrate that keeps liquid crystal, the on-off element that on described substrate, is provided with, be arranged on the dielectric film of the upside of described on-off element, be arranged on the 1st electrode of the upside of described dielectric film, be arranged on other dielectric films of the upside of described the 1st electrode, the upside that is arranged on described other dielectric films have a plurality of groovings and and described the 1st electrode between through the 2nd electrode of described each grooving generation electric field.
Above-mentioned liquid-crystal apparatus possesses the substrate that keeps liquid crystal.Substrate constitutes to be possessed: the 1st electrode of on-off element, the upside that is arranged on the upside of on-off element at least and has dielectric film that flatness for example forms by acryl resin etc., be arranged on described dielectric film and the upside that is arranged on described the 1st electrode are by for example SiO
2, other dielectric films of forming such as SiNx, the upside that is arranged on described other dielectric films have a plurality of groovings and and the 1st electrode between through the 2nd electrode of this each grooving generation electric field.In preference, described electric field can be to have the fringing field of highfield composition with the direction of described substrate almost parallel and the direction of approximate vertical (the last side direction of substrate) when the driving of described liquid crystal.Can constitute thus, the liquid-crystal apparatus of FFS mode.
In preference, can to utilize three terminal type elements that TFT element or the TFT element of P-Si (polysilicon) type or the TFT element of α-Si (amorphous silicon) type etc. with for example LTPS (low temperature polycrystalline silicon) type are representative or TFD (thin film diode) element etc. as on-off element be non-line elements of two-terminal type of representative etc.
Here, usually, if the 1st electrode and the 2nd electrode plane see that overlapping areas is to exist in the viewing area to have the part of concavo-convex shape (stairstepping), then produce the orientation confusion of liquid crystal molecule during the driving of liquid crystal in this part.Reduce thus, the display quality of this part.Therefore, utilize light shield layer etc. to block necessity of this part, at that rate, produce and its respective openings rate also problem of corresponding reduction though have.
Relative therewith, dielectric film forms as planarization film in this liquid-crystal apparatus, is arranged on the downside of the 1st transparency electrode, other dielectric film and the 2nd transparency electrode.Thus, can make the 1st transparency electrode, other dielectric film and the 2nd transparency electrode planarization.Thus, in seeing overlapping areas (below, be called " viewing area " simply), the 1st transparency electrode and the 2nd transparency electrode plane earth do not form electrode part with concavo-convex shape (stairstepping).Though especially near the part that forms easily stairstepping the on-off element on based on the electrode of its shape in the viewing area, this situation can be prevented from.Thus, can near on-off element as the viewing area, realize high aperture.
In preference, described substrate has the wiring (for example source line etc.) that is electrically connected with described on-off element, preferred described wiring is covered by described dielectric film.Thus, can make the electrode part planarization of the viewing area of the upside that is positioned at wiring.Thus, can make until the wiring near till as the viewing area, its result can realize high aperture.Thus, can be applicable to and be used to carry out the liquid-crystal apparatus that high resolving power shows.
In addition, in this liquid-crystal apparatus, because other dielectric films are arranged between the 1st electrode and the 2nd electrode, other dielectric films play a role as the dielectric film that forms auxiliary capacitor.Therefore, adjust the thickness of other dielectric films (dielectric film) easily, it is easy that the adjustment of the size of auxiliary capacitor becomes.For example need make under the big situation of auxiliary capacitor being used to carry out high resolving power shows liquid crystal indicator etc., can access necessary enough auxiliary capacitors by approaching the thickness setting of other dielectric films (dielectric film).Thus, can realize the raising of display quality, further realize low power consumption.
In preference, the thickness of other dielectric films (dielectric film) preferably determines to be more preferably about 200～800fF for the size that makes the auxiliary capacitor that is formed at self is set to about 100～600fF.In addition, under the situation of resolution more than or equal to 200PPi, preferably the thickness of other dielectric films is set to about 50～400nm.Under the situation of resolution less than 200PPi, preferably the thickness of other dielectric films is set to about 200～1000nm on the other hand.
In addition, along with approaching the thickness setting of other dielectric films (dielectric film), the fringing field (electric field) that forms between the 1st electrode and the 2nd electrode is grow also, even lower voltage also can easily make the liquid crystal molecule action.When in normal black display mode, being other dielectric films (dielectric film) thickness setting about 50～200nm for example, can make to put on to show that with white corresponding driving voltage is about about 2～5V between the 1st electrode and the 2nd electrode.In addition, when in normal black display mode, being the thickness setting of other dielectric films (dielectric film) about 200～600nm, can make to put on to show that with white corresponding driving voltage is about about 3～5V between the 1st electrode and the 2nd electrode.Further, owing to being the thickness of other dielectric film (dielectric film) to set as thin as a wafer, so when forming other dielectric films (dielectric film), can realize the raising of output.
In a mode of above-mentioned liquid-crystal apparatus, described the 1st electrode is a common electrode, and described the 2nd electrode is the unit picture element electrode that is electrically connected with described on-off element.
In this mode, can make the 1st electrode is common electrode, and the unit picture element electrode (sub-pixel) that the 2nd electrode is electrically connected with on-off element for the contact hole by being arranged at dielectric film and other dielectric films respectively etc.Thus, can make the unit picture element electrode extend near the on-off element and near the wiring (for example source line), thus the realization high aperture.
In preference, common electrode preferably forms roughly whole surperficial shape on the dielectric film as planarization film.Thus, need not to be provided with the common electrode line, just can satisfy the time constant (capacitor C and resistance R are long-pending) of common electrode.Thus, even put the useful area that also can increase the unit picture element electrode, realize high aperture from this.
In his mode of above-mentioned liquid-crystal apparatus, described the 1st electrode is the unit picture element electrode that is electrically connected with described on-off element, and described the 2nd electrode is a common electrode.
In this mode, can make the unit picture element electrode (sub-pixel) of the 1st electrode, and can to make the 2nd electrode be common electrode for being electrically connected with on-off element through the contact hole etc. that is arranged at dielectric film.Thus, can extend to the unit picture element electrode near the on-off element and near the wiring (for example source line), realize high aperture.
In preference, preferred described wiring is configured between the adjacent described unit picture element electrode, and at least a portion of described common electrode and described wiring plane earth are seen overlapping.
Here, during liquid crystal drive, drive the voltage of a unit picture element electrode arbitrarily when high, the intensity of the corresponding fringing field (electric field) that takes place between this unit picture element electrode and common electrode with it is grow also, but this fringing field (electric field) can not have influence on a unit picture element electrode of other adjacent with this unit picture element electrode based on seeing the existence of overlapping common electrode with wiring (for example source line) plane earth.Thus, the fringing field (electric field) that can prevent this unit picture element electrode brings bad influence for the state of orientation of liquid crystal molecule of the upside of the unit picture element electrode be positioned at adjacent other, can access good display quality, and realize higher high resolving powerization.
In other modes of above-mentioned liquid-crystal apparatus, described common electrode is electrically connected with the common electrode line littler than the resistance of this common electrode.In preference, common electrode can be formed by high resistance formed materials such as ITO.The common electrode line can be formed by 3 layers of low electrical resistant material that constitutes with titanium/aluminium/titanium on the other hand.In addition, described shared electricity is electrically connected with described common electrode line through other the contact hole that is arranged at described dielectric film and described other dielectric films respectively.Based on these, can make common electrode line and common electrode all-in resistance little, so can reduce the time constant of this common electrode.Thus, prevent to bring bad influence to display quality.
In other mode of above-mentioned liquid-crystal apparatus, have with described substrate clip described liquid crystal phase to substrate in opposite directions, described substrate in opposite directions has light shield layer with described contact hole and described other contact hole correspondence position.
In this mode, have with substrate clip liquid crystal phase to substrate in opposite directions, this in opposite directions substrate have light shield layer in the position corresponding with the contact hole of contact hole and other.Thus, even under near the situation of the orientation confusion of generation liquid crystal molecule contact hole and other the contact hole, also can utilize light shield layer to cover the chaotic zone of this orientation.Thus, can prevent the reduction of the display quality that the orientation confusion with liquid crystal molecule accompanies.
In other modes of the present invention, can constitute the electronic equipment that above-mentioned liquid-crystal apparatus is possessed as display part.
Description of drawings
Fig. 1 is the vertical view of formation that schematically shows the liquid-crystal apparatus of the 1st embodiment of the present invention.
Fig. 2 is the part amplification plan view of the pixel formation etc. of expression the 1st embodiment.
Fig. 3 is the fragmentary cross-sectional view along the sub-pixel of the cut-out line A-A ' of Fig. 2.
Fig. 4 is the part amplification plan view of the pixel formation etc. of expression comparative example.
Fig. 5 is the fragmentary cross-sectional view along the sub-pixel of the cut-out line B-B ' of Fig. 4.
Fig. 6 is the part amplification plan view of the pixel formation etc. of expression the 2nd embodiment.
Fig. 7 is the fragmentary cross-sectional view along the sub-pixel of the cut-out line C-C ' of Fig. 6.
Fig. 8 is the fragmentary cross-sectional view of device substrate of the action effect of explanation the 2nd embodiment.
Fig. 9 is the example that has been suitable for the electronic equipment of liquid-crystal apparatus of the present invention.
The explanation of symbol
1: downside substrate, 2: upside substrate, 4: liquid crystal layer, 4a: liquid crystal molecule, 10: pixel electrode, 10a: grooving, 20: common electrode, 20a: grooving, 20X: common electrode line, 21:LTPS type TFT element, 32: source line, 33: grid line, 52: the 2 dielectric films (planarization film), 53: the 3 dielectric films (dielectric film), 91,93: device substrate, 92: filter substrate, 100,200: liquid-crystal apparatus.
Embodiment
Below, be used to implement most preferred embodiment of the present invention with reference to description of drawings.And, in following various embodiments, the present invention is applied to liquid-crystal apparatus.
The 1st embodiment
(formation of liquid-crystal apparatus)
At first, with reference to Fig. 1 etc. formation of the liquid-crystal apparatus 100 of the 1st embodiment of the present invention etc. is described.
Fig. 1 is the vertical view that roughly constitutes of schematically representing the liquid-crystal apparatus 100 of the 1st embodiment of the present invention.Among Fig. 1, the face side of paper (observation side) disposes filter substrate 92, and paper disposes device substrate 91 by rear side on the other hand.And among Fig. 1, the longitudinal direction (column direction) of regulation paper is the Y direction, and the transverse direction of paper (line direction) is a directions X.In addition, in Fig. 1, with 1 subpixel area SG of of all kinds corresponding region representation of R, G, B, and the pel array of 1 row, 3 row that are made of the subpixel area SG of all kinds of R, G, B is represented 1 pixel region AG.And, below, a viewing area that will exist in a subpixel area SG is called " sub-pixel ", and in addition, corresponding display is called " 1 pixel " in the pixel region AG.
Liquid-crystal apparatus 100 is to form like this: device substrate 91 and fit by the seal member 5 of frame shape with the filter substrate 92 that this device substrate 91 dispose in opposite directions, enclose liquid crystal formation liquid crystal layer 4 in the inboard of sealing parts 5.
Here, liquid-crystal apparatus 100 is to utilize the colour of R, G, B3 look formation to show the liquid-crystal apparatus of usefulness.And be the liquid-crystal apparatus of driven with active matrix mode that has adopted the TFT element (below, be called " LTPS type TFT element 21 ") of LTPS (low temperature polycrystalline silicon) type as on-off element.In addition, this liquid-crystal apparatus 100 is device substrate 91 sides at the various electrodes that are formed with pixel electrode etc., with the direction (observation side) of the direction of 91 almost parallels of this device substrate and approximate vertical on, the liquid-crystal apparatus of so-called FFS mode of the orientation of fringing field (electric field E) control liquid crystal molecule takes place.Therefore, can in this liquid-crystal apparatus 100, obtain high angle of visibility etc.In addition, liquid-crystal apparatus 100 is the liquid-crystal apparatus that only carry out the infiltration type of infiltration type demonstration.
At first, the plane formation to device substrate 91 describes.On the inside surface of device substrate 91, mainly form or be equipped with multiple source line 32, a plurality of grid lines 33, a plurality of LTPS type TFT elements 21, a plurality of pixel electrodes 10, common electrode 20, drive IC 40 outside connects the (flexible base, board: Flexible Printed Circuit) 41 etc. with wiring 35 and FPC.
As shown in Figure 1, device substrate 91 have stretch out from one side side direction outside of filter substrate 92 form stretch out zone 36.Stretch out the zone at this and drive IC 40 is installed on 36.The terminal of the input side of drive IC 40 (diagram slightly) is connected the distolateral electrical connection with wiring 35 with a plurality of outsides.And another of a plurality of outside connection usefulness wiring 35 is distolateral to be electrically connected with FPC41.
Each source line 32 forms to the extension of Y direction and at directions X has suitable interval.The terminal of the outgoing side of one distolateral and drive IC 40 of each source line 32 (diagram slightly) is electrically connected.
Each grid line 33 has for example 3 layers of formation of TI (titanium)/Al (aluminium)/TI (titanium).Possess: the 1st wiring 33a that forms in the mode of extending and the 2nd wiring 33b to form to directions X and the mode of in effective viewing area V described later, extending from the terminal part of the 1st wiring 33a to the Y direction.The 2nd wiring 33b of each grid line 33 to be being the directions X mode of extending along the direction that intersects with each source line 32 and having suitable compartment of terrain in the Y direction and form, and the terminal (diagram is omited) of the outgoing side of distolateral and the drive IC 40 of the 1st wiring 33a of each grid line 33 is electrically connected.
Each source line 32 and each grid line 33 the 2nd the wiring 33b crossover location near correspondence be provided with LTPS type TFT element 21.LTPS type TFT element 21 and each source line 32, each grid line 33 and each pixel electrode 10 electrical connection such as grade.
Each pixel electrode 10 is formed by transparent conductive materials such as for example ITO, is provided with by corresponding in each subpixel area SG.
Effectively viewing area V (zone that is fenced up by 2 dot-and-dash lines) is the zones of a plurality of pixel region AG in directions X and the rectangular arrangement of Y direction.At this effective viewing area V display text, numeral, the image of figure etc.And effectively the zone in the outside of viewing area V becomes the fringe region 38 that does not have contribution to showing.In addition, on the inside surface of each pixel electrode 10 grade, be formed with not shown alignment films.This alignment films is subjected to friction treatment (with reference to Fig. 2) in prescribed direction.
Below, the plane of filter substrate 92 constituted describe.Filter substrate 92 has light shield layer (be commonly referred to as " black matrix ", below be designated as " BM " simply); Dyed layer 6R, the 6G of R, G, B3 look, 6B cross and cover (overcoat) layer 16 (with reference to Fig. 3) and alignment films 18 (with reference to Fig. 3) etc.And, in the following description, specify not considering color under the situation of dyed layer and be designated as " dyed layer 6 " simply, specify in distinct color and be designated as " dyed layer 6R " etc. under the situation of dyed layer.BM is formed on the position of dividing each subpixel area SG etc. and locates.
In liquid-crystal apparatus 100 with above formation, based on from the signal of the FPC41 side that is connected with electronic equipment etc. and electric power etc., utilize drive IC 40, according to G1, G2 ..., Gm-1, Gm (m: order natural number), select a grid line 33 successively exclusively at every turn, and selecteed grid line 33 is provided the gate signal of selecting voltage.Other non-selected grid line 33 is provided the gate signal of non-selection voltage on the other hand.And, drive IC 40 is at the pixel electrode 10 that is present in the position corresponding with selecteed grid line 33, respectively by corresponding S1, S2 ..., (N: natural number) source line 32 and each LTPS type TFT element 21 provide the source signal corresponding with displaying contents for SN-1, SN.Its result, the show state of liquid crystal layer 4 switches to non-show state or middle show state, the state of orientation Be Controlled of the liquid crystal molecule in the liquid crystal layer 4.Thus, effectively can show desired image in the V of viewing area.
(pixel formation)
Below, with reference to Fig. 2 and Fig. 3 pixel formation of the liquid-crystal apparatus 100 of the 1st embodiment of the present invention etc. is described.
Fig. 2 represents that the plane of 4 pixels of the device substrate 91 of the 1st embodiment constitutes.The section of 1 sub-pixel of Fig. 3 when expression is illustrated in position by LTPS type TFT element 21 and cuts off in the sectional view of the cut-out line A-A ' of Fig. 2 constitutes.
At first, with reference to Fig. 2 and Fig. 3, pixel formation of the device substrate 91 of the 1st embodiment etc. is described.
On the inside surface of downside substrate 1, with P-Si (polysilicon) layer 19 of the corresponding low form that is formed with the flat shape that has roughly " コ " word shape of crossover location of the 2nd wiring 33b of source line 32 and grid line 33.On the inside surface of P-Si layer 19 and downside substrate 1, on its roughly whole one side, be formed with the gate insulating film 50 that for example constitutes by SiO2 etc.
Gate insulating film 50 P-Si layer 19 one distolateral and with a facial planes of source line 32 see that overlapping position has the 1st contact hole 50a, and have the 2nd contact hole 50b in the position of another distolateral correspondence of P-Si layer 19.Be formed with grid line 33 on the inside surface of gate insulating film 50, the 2nd wiring 33b of its grid line 33 is as shown in Figure 2 to form to the mode that directions X extends across certain interval in the Y direction, and the 2nd wiring 33b and P-Si layer 19 part and plane earth are seen overlapping.
On the inside surface of grid line 33 and gate insulating film 50, be formed with the 1st dielectric film 51 that constitutes by for example SiO2 etc.The 1st dielectric film 51 has the 1st contact hole 51a in the position corresponding with the 1st contact hole 50a, and has the 2nd contact hole 51b in the position corresponding with the 2nd contact hole 50b.The inside surface of the 1st dielectric film 51 is provided with source line 32 and repeater electrode 77.
Be formed with the 2nd dielectric film 52 that for example constitutes on the inside surface of source line 32, repeater electrode 77 and the 1st dielectric film 51 by acryl resin etc.The inside surface of the 2nd dielectric film 52 has flatness, and the 2nd dielectric film 52 constitutes planarization film.The 2nd dielectric film 52 has contact hole 52a in the position near distolateral and the 2nd a contact hole 50b and a 51b of repeater electrode 77.And, among the present invention, between the 1st dielectric film 51 and the 2nd dielectric film 52, the dielectric film that is made of for example SiNx etc. can be set further also.
On the inside surface of the 2nd dielectric film 52, on its roughly whole one side, be formed with the common electrode 20 (also with reference to Fig. 1) that is connected with the COM terminal.Common electrode 20 is for example formed by the transparent material of ITO etc., has opening 20a in the position corresponding with contact hole 52a.For example on the inside surface of the part of the 2nd dielectric film 52 that is positioned at contact hole 52a and common electrode 20, be formed with by SiO2 the 3rd dielectric film 53 that SiNx etc. constitute.The 3rd dielectric film 53 has contact hole 53a in the position corresponding with the contact hole 52a of the 2nd dielectric film 52.The 3rd dielectric film 53 is arranged between common electrode 20 and the pixel electrode described later 10, so play a role as the dielectric film that forms auxiliary capacitor.Here, in order to ensure sufficient auxiliary capacitor, the thickness d 1 of the 3rd dielectric film 53 preferably is provided with thinly as far as possible.
In order to realize this purpose, preferably the thickness d 1 of the 3rd dielectric film 53 is set at the size that makes at the auxiliary capacitor that self forms and is set at about 100～600fF, preferably about 200～800fF in preference.In addition, during more than or equal to 200PPi, the thickness d 1 of preferred the 3rd dielectric film 53 is set at about 50～400nm in resolution, and when resolution was less than 200PPi on the other hand, the thickness d 1 of preferred the 3rd dielectric film 53 was set at about 200～1000nm.
On the inside surface of the 3rd dielectric film 53, in each subpixel area SG, be formed with the pixel electrode 10 that the transparent conductive material by for example ITO etc. constitutes.Pixel electrode 10 is electrically connected with repeater electrode 77 by contact hole 52a.Therefore, the source signal from source line 32 offers pixel electrode 10 by LTPS type TFT element 21 and repeater electrode 77.In addition, pixel electrode 10 clip the 3rd dielectric film 53 and common electrode 20 in opposite directions and plane earth see overlapping.Pixel electrode 10 is provided with a plurality of grooving 10a that are used for taking place fringing field (electric field E) between himself and common electrode 20.Each grooving 10a in Fig. 2, with at the bearing of trend of source line 32 across certain interval and deasil rotated the mode that the direction of predetermined angular extends at bearing of trend and be set up relative to the 2nd wiring 33b of grid line 33.
Be formed with not shown alignment films on the inside surface of the part of the 3rd dielectric film 53 and pixel electrode 10.On this alignment films, as shown in Figure 2, be that benchmark has rotated widdershins on the preferably about 5 ° direction of angle θ (below be called " frictional direction R ") and has been implemented friction treatment with the directions X of bearing of trend as the 2nd wiring 33b of grid line 33.Therefore, the initial orientation state of liquid crystal molecule 4a is oriented to the state of its long axis direction along frictional direction R.In addition, the downside of downside substrate 1 is provided with polaroid 11, and the downside of polaroid 11 is provided with the backlight 15 as lighting device.Thus, constitute the device substrate 91 of the pixel formation that comprises the 1st embodiment.
Corresponding with above-mentioned pixel formation on the other hand filter substrate 92 is constructed as follows described.
On the inside surface of upside substrate 2, be provided with dyed layer 6R in each subpixel area SG, the dyed layer 6 of some formations of the dyed layer 6B of green dyed layer 6G and blueness by redness.On the inside surface of upside substrate 2, be provided with BM in the position of dividing each subpixel area SG and the position corresponding with LTPS type TFT element 21.Therefore the 2nd of LTPS type TFT element 21, source line 32 and grid line 33 the wiring 33b etc. sees overlapping with the BM plane earth.Be formed with coating 16 on the inside surface of BM and each dyed layer 6.This effect of crossing coating 16 is protection dyed layer 6 grades burn into pollutions of not being subjected to the medicament that uses in the manufacturing process of liquid-crystal apparatus 100 etc. etc.Cross on the inside surface of coating 16 and be formed with the alignment films 18 that has been implemented friction treatment in prescribed direction.Like this, constitute the filter substrate 92 of the 1st embodiment.
Liquid-crystal apparatus 100 with above formation, when it drives, as shown in Figure 2, the liquid crystal molecule 4a that is in initial orientation state along frictional direction R utilizes fringing field (electric field E) that the bearing of trend at source line 32 takes place to rotate widdershins and to the bearing of trend reorientation of source line 32.And, during the section of Fig. 3 constitutes, fringing field (electric field E) has the highfield composition with the direction (transverse direction of the paper of Fig. 3) of device substrate 91 almost parallels and the direction (the filter substrate side of Fig. 3) of approximate vertical, takes place across these a plurality of grooving 10a and the 3rd dielectric film 53 between pixel electrode 10 and common electrode 20.Thus, the state of orientation Be Controlled of liquid crystal molecule 4a can be carried out infiltration type and be shown.Particularly, carry out this infiltration type when showing, advance along path T shown in Figure 3 from the illumination light of backlight 15 outgoing, each dyed layer 6 by common electrode 20, pixel electrode 10 and R, G, B reaches the observer by the time.At this moment, this illumination light presents regulation form and aspect and brightness by seeing through these dyed layer 6 grades.Like this, desired color display image observed person sees.
Below, the distinctive action effect of the liquid-crystal apparatus 100 of the 1st embodiment that comparative example is compared describes.
At first, with reference to Fig. 4 and Fig. 5, the formation of the liquid-crystal apparatus 500 of the FFS mode of comparative example is described.And in comparative example, to giving identical symbol with the shared key element of the 1st embodiment, its explanation is simplified or is omitted.
Fig. 4 represents that the plane of 4 pixels of the device substrate 93 of the comparative example corresponding with Fig. 2 constitutes.Fig. 5 represents along the sectional view of the cut-out line B-B ' of Fig. 4.And the section of 1 sub-pixel when being illustrated in position by α-Si type TFT element 23 and cutting off constitutes.
The liquid-crystal apparatus 500 of comparative example is enclosed liquid crystal and is formed with liquid crystal layer 4 between device substrate 93 with α-Si type TFT element 23 and filter substrate 92.
At first, device substrate 93 be constructed as follows described.
On downside substrate 1, be provided with the common electrode 20 that constitutes by ITO etc. (zone that fences up by two dot-and-dash lines) according to each subpixel area SG.On the upper and lower side group plate 1 of the part of common electrode 20, as shown in Figure 4, be provided with the common electrode line 20X that extends at directions X across certain interval in the Y direction.Therefore common electrode 20 is electrically connected with electrode wires 20X together.Common electrode line 20X has omitted diagram, is electrically connected with terminal with COM on the assigned position on the device substrate 93.On downside substrate 1, be provided with the 2nd wiring 33b of grid line 33 in the mode of extending at directions X across certain interval in the Y direction.The 2nd wiring 33b is arranged near the position of the common electrode line 20X of corresponding setting with adjacent pixels.
At common electrode 20, common electrode line 20X is formed with gate insulating film 50 on grid line 33 and the downside substrate 1.On gate insulating film 50, near the crossover location of the 2nd wiring 33b of source described later line 32 and grid line 33, be provided with the α-Si layer 26 of the key element that becomes α-Si type TFT element 23.
In Fig. 4, on gate insulating film 50, active line 32 is set in the mode of extending in the Y direction.Source line 32 has the warpage part 32X that is electrically connected with this α-Si layer 26 with mode warpage overlapping on α-Si layer 26.In addition, α-Si layer 26 and gate insulating film 50 are provided with drain electrode 34.Therefore drain electrode 34 is electrically connected with α-Si layer 26.Therefore the warpage part 32X of source line 32 is electrically connected with drain electrode 34 by α-Si layer 26.Like this, form α-Si type TFT element 23 in this zone.
On gate insulating film 50 and α-Si type TFT element 23, be formed with the passivation layer 54 that constitutes by for example SiNx etc.Passivation layer 54 has contact hole 54a with a part of position overlapped of common electrode 20 and with one of drain electrode 34 distolateral place, lap position.
On passivation layer 54, be formed with the pixel electrode 10 that constitutes by ITO etc. at each subpixel area SG.The formation of pixel electrode 10 is identical with the 1st embodiment.That is, pixel electrode 10 has a plurality of grooving 10a, is electrically connected with drain electrode 34 by contact hole 54a.Therefore the source signal from source line 32 offers pixel electrode 10 by α-Si type TFT element 23.Be formed with not shown alignment films on pixel electrode 10 grades.This alignment films has been implemented friction treatment in the direction identical with the 1st embodiment.
Have in the liquid-crystal apparatus 500 of comparative example of above formation, when it drives,, carry out infiltration type and show according to the orientation of the principle control liquid crystal identical with the liquid-crystal apparatus 100 of the 1st embodiment.
Have in the comparative example of such formation, have following problem.
That is, in the liquid-crystal apparatus 500 with α-Si type TFT element 23 of comparative example, as shown in Figure 5, be provided with the planarization film suitable (the 2nd dielectric film 52) with the 1st embodiment.Therefore, especially, see overlapping areas A1 at a part of plane earth with electrode wires 20X together, with see overlapping areas A2 with a part of plane earth as the drain electrode 34 of the key element of α-Si type TFT element 23, with see among the overlapping areas A3 that with a part and the plane earth of source line 32 part of pixel electrode 10 forms concavo-convex shape (stairstepping).In the part of pixel electrode 10, produce the orientation confusion of liquid crystal molecule 4a, give display quality with bad influence, so can not use the part of this pixel electrode 10 as the viewing area with such stairstepping.Therefore, generally in filter substrate 92 sides,, be provided with the BM that is used to cover based on the deterioration of the display quality of the orientation confusion of such liquid crystal molecule 4a in the position corresponding with the part of this pixel electrode 10.Thus, be created in the problem that comparative example split shed rate reduces.And, in comparative example, except common electrode 20, also be provided with common electrode line 20X, so have the problem that aperture opening ratio further reduces.
In addition, in the comparative example, be provided with between pixel electrode 10 and the common electrode 20 as the passivation layer 54 of dielectric film and gate insulating film 50 between be formed with auxiliary capacitor.As mentioned above, reduce together with aperture opening ratio, pixel electrode 10 and common electrode 20 plane earths see that overlapping area diminishes, and appearance can not obtain the problem of desired auxiliary capacitor.The thickness d 2 of adding the dielectric film of comparative example is compared considerably thick with the 1st embodiment, so become littler based on the size of the pattern auxiliary capacitor of general electrostatic capacitance.Therefore, the comparative example with this formation has the problem that is difficult to be used to carry out the liquid crystal indicator that high resolving power shows.
In contrast to this, in the liquid-crystal apparatus 100 of the 1st embodiment,, be provided with the 2nd dielectric film (planarization film) 52 with flatness at the downside of pixel electrode 10, the 3 dielectric films 53 and common electrode 20 in device substrate 91 sides.Thus, can be positioned at source line 32 and pixel electrode 10, the 3 dielectric films 53 at LTPS type TFT element 21 places and the planarization of common electrode 20 at least.That is, in subpixel area SG, be not formed with electrode part with concavo-convex shape (stairstepping).Thus, in the orientation confusion that can prevent near the liquid crystal molecule 4a source line 32 and LTPS type TFT element 21, its result not only can not only extend to pixel electrode 10 near source line 32 and the LTPS type TFT element 21, can also extend near the pixel electrode 10 of adjacent other.Thus, compare with comparative example and can realize high aperture.
Further, in the 1st embodiment, common electrode 20 on the 2nd dielectric film (planarization film) 52 roughly whole is gone up configuration (when the part of removing contact hole 52a), so can make the time constant (capacitor C and resistance R long-pending) of common electrode 20 become little value.Therefore, in the 1st embodiment, be not provided with the common electrode line 20X suitable with comparative example.Also can make the useful area of pixel electrode 10 grades become big from this point, realize high aperture.Thus, can properly use in being used to carry out the liquid crystal indicator that high resolving power shows.
In addition, in the 1st embodiment, the 3rd dielectric film 53 as dielectric film is arranged between pixel electrode 10 and the common electrode 20,, compares the size of easy adjustment auxiliary capacitor with comparative example so adjust the thickness of the 3rd dielectric film 53 easily.Be necessary to make auxiliary capacitor to become under the big situation for example being used to carry out high resolving power shows liquid crystal indicator etc., set thinly, can access necessary sufficient auxiliary capacitor by thickness d 1 the 3rd dielectric film 53.Therefore, can realize the raising and and then the realization low power consumption of display quality.
The preferred decision of the thickness d 1 of the 3rd dielectric film 53 is about 100～600fF for size at the auxiliary capacitor that self forms is set in preference, is more preferably about 200～800fF.In addition, under the situation of resolution, preferably the thickness d 1 of the 3rd dielectric film 53 is set at about 50～400nm more than or equal to 200PPi.In resolution during less than 200PPi, the thickness d 1 of preferred the 3rd dielectric film 53 is set at about 200～1000nm on the other hand.
In addition, with the fringing field (electric field E) that forms between pixel electrode 10 and the common electrode 20 is grow also together set thinly as the thickness d 1 of the 3rd dielectric film 53 of dielectric film, even low-voltage also can easily make liquid crystal molecule 4a action.When the thickness d 1 of the 3rd dielectric film 53 being set at about 50～200nm, can make the driving voltage corresponding with white demonstration that applies between pixel electrode 10 and the common electrode 20 is about about 2～5V in for example often black display mode.In addition, when the thickness d 1 of the 3rd dielectric film 53 being set at about 200～600nm, can make the driving voltage corresponding with white demonstration that applies between pixel electrode 10 and the common electrode 20 is about about 3～5V in the normal black display mode.Further, the thickness d 1 of the 3rd dielectric film 53 can be set as thin as a wafer, so can realize the raising of throughput rate when forming the 3rd dielectric film 53.
In addition, dispose BM in filter substrate 92 sides in the position corresponding in the 1st embodiment, so the orientation of liquid crystal molecule 4a takes place also can to utilize BM to cover the chaotic zone of orientation when chaotic near this each contact hole with each above-mentioned connect apertures.Thus, can prevent the reduction of the display quality that the orientation confusion with liquid crystal molecule 4a accompanies.
The 2nd embodiment
Below, with reference to Fig. 6 and Fig. 7 the formation of the liquid-crystal apparatus 200 of the 2nd embodiment of the present invention is described.Here, the liquid-crystal apparatus 200 of the 2nd embodiment is the liquid-crystal apparatus with FFS mode of LTPS type TFT element 21, and is the liquid-crystal apparatus of infiltration type.And, give identical symbol following to the key element identical with the 1st embodiment, simplify or omit its explanation.
Fig. 6 represents that the plane of 4 pixels of the device substrate 93 of the 2nd embodiment constitutes.Fig. 7 represents along the sectional view of the cut-out line C-C ' of Fig. 6, and the section that is illustrated in 1 sub-pixel when cutting off by LTPS type TFT element 21 positions constitutes.
At first, with reference to Fig. 6 and Fig. 7 pixel formation of the device substrate 93 of the 2nd embodiment etc. is described.
On the inside surface of downside substrate 1, source line 32 and grid line 33 the 2nd the wiring 33b crossover location on be formed with P-Si layer 19.On the inside surface of P-Si layer 19 and downside substrate 1, on its roughly whole, be formed with gate insulating film 50 with the 1st contact hole 50a and the 2nd contact hole 50b.And the 1st contact hole 50a is identical with the 1st embodiment with the formation position of the 2nd contact hole 50b.
As shown in Figure 6, the 2nd wiring 33b of grid line 33 is to form in the mode that directions X extends across certain interval in the Y direction on the inside surface of gate insulating film 50, and the 2nd one one of connecting up 33b is set at P-Si layer 19 plane earth and sees position overlapped.On the inside surface of gate insulating film 50, the 2nd wiring 33b position adjacent with grid line 33 is formed with common electrode line 20X in the mode of extending towards the direction identical with the bearing of trend of the 2nd wiring 33b.Common electrode line 20X is preferably formed by identical materials with above-mentioned grid line 33.Common electrode line 20X is electrically connected with COM terminal in being arranged on drive IC 40.
Be formed with the 1st dielectric film 51 on the inside surface of common electrode line 20X, grid line 33 and gate insulating film 50 with the 1st connect apertures 51a and the 2nd contact hole 51b.The 1st contact hole 51a is identical with the 1st embodiment with the formation position of the 2nd contact hole 51b.The 1st dielectric film 51 is near position and have the 3rd contact hole 51c together with the position of electrode wires 20X correspondence P-Si layer 19 further.
In Fig. 6, in the mode of between adjacent sub-pixel regions SG, extending active line 32 is being set on the inside surface of the 1st dielectric film 51 along the Y direction.The part of source line 32 is by the 1st connect apertures 50a and 51a distolateral electrical connection the with P-Si layer 19.On the inside surface of the 1st dielectric film 51, with the other end side plane of P-Si layer 19 see that overlapping position is provided with repeater electrode 77.On the inside surface of the 1st dielectric film 51, seeing position overlapped and corresponding position be provided with other repeater electrode 34 with the 2nd wiring of electrode wires 20X and grid line 33 between the 33b together with the 3rd connect apertures 51c plane earth.
Be formed with on the inside surface of source line 32, repeater electrode 77, other repeater electrode 34 and the 1st dielectric film 51 and have connect apertures 52a, as the 2nd dielectric film 52 of planarization film.And the formation position of connect apertures 52a is identical with the 1st embodiment.Be formed with pixel electrode 10 according to each subpixel area SG on the inside surface of the 2nd dielectric film 52.Pixel electrode 10 is electrically connected with repeater electrode 77 by connect apertures 52a.Therefore the source signal from source line 32 offers pixel electrode 10 by LTPS type TFT element 21 and repeater electrode 77.
Be formed with on the inside surface of pixel electrode 10 and the 2nd dielectric film 52 and have contact hole 53a, as the 3rd dielectric film 53 of dielectric film.And the formation position of contact hole 53a is identical with the 1st embodiment.The inside surface of the 3rd dielectric film 53 is provided with common electrode 20.Therefore each common electrode 20 across the 3rd dielectric film 53 and each pixel electrode 10 in opposite directions and plane earth see overlapping.In addition, in this example, each common electrode 20 corresponding with each sub-pixel seen overlapping with source line 32 plane earths of the leftward position of the paper that is positioned at this each sub-pixel.Common electrode 20 is electrically connected with other repeater electrode 34 by contact hole 53a.Therefore, common electrode 20 is electrically connected by other repeater electrode 34 and common electrode line 20X and drive IC 40 interior COM terminals.In addition, between common electrode 20 and pixel electrode 10, be provided with a plurality of grooving 20a that are used to take place fringing field (electric field E).Each grooving 20a in Fig. 6, with at the bearing of trend of source line 32 across certain interval and rotate the mode that the predetermined angular direction extends widdershins relative to the bearing of trend of the 2nd wiring 33b of grid line 33 and be provided with.
Be formed with not shown alignment films on the inside surface of the part of the 3rd dielectric film 53 and common electrode 20.As shown in Figure 6 along being that benchmark rotates counterclockwise angle θ with the directions X as the bearing of trend of common electrode line 20X, preferably about 5 ° direction has been implemented friction treatment on the described alignment films.Therefore the initial orientation state of liquid crystal molecule 4a is oriented to the state of its long axis direction along frictional direction R.Like this, form the device substrate 93 of the pixel formation that comprises the 2nd embodiment.
So the formation that constitutes corresponding filter substrate 92 with above-mentioned pixel is because of omitting its explanation with the 1st embodiment is roughly the same on the other hand.But the BM that is arranged on filter substrate 92 sides is configured in the 2nd plane earths such as wiring 33b, common electrode line 20X and LTPS type TFT element 21 of source line 32, grid line 33 and sees on the position overlapped.
Liquid-crystal apparatus 200 with above formation is when it drives, by the state of orientation of the principle control liquid crystal molecule 4a identical with the liquid-crystal apparatus 100 of above-mentioned the 1st embodiment.Make desired color display image observed person see.
Below, the distinctive action effect of the liquid-crystal apparatus 200 of the 2nd embodiment is described.
At first, the liquid-crystal apparatus 200 of the 2nd embodiment so can have the action effect identical with the 1st above-mentioned embodiment, is realized high aperture owing to be provided with the 2nd dielectric film (planarization film) 52 with flatness in device substrate 93 sides.But in the 2nd embodiment, be purpose, have a mind to be provided with by having the common electrode line 20X that 3 layers of low electrical resistant material that constitutes of titanium/aluminium/titanium for example constitute with the time constant that reduces common electrode 20.Thus, can prevent the reduction of display quality on the one hand, compare with the 1st embodiment on the other hand that correspondingly aperture opening ratio reduces.
That is, if this point is described in detail, be exactly common electrode 20 be that high-resistance material by ITO etc. forms.Therefore this common electrode 20 when effectively the roughly whole one side of viewing area V forms, it is big that the area of this common electrode 20 becomes, so the resistance of this common electrode 20 that accompanies with it uprises.Thus, the time constant of common electrode 20 uprises, and might bad influence be arranged to display quality.But in the 2nd embodiment, the common electrode 20 that is made of ITO is provided with according to each subpixel area SG, so compare with the whole common electrode that forms planarly, can make the area of this common electrode 20 less.Add, each common electrode 20 is connected with the common electrode line 20X that is formed by low electrical resistant material.Owing to these reasons, the resistance of the addition of common electrode line 20X and common electrode 20 is less, so can reduce the time constant of this common electrode 20.Thus, can prevent from display quality is produced bad influence.And,, just can identically with the 1st embodiment not need common electrode line 20X as long as can utilize the formation of the 2nd embodiment fully to reduce the time constant of common electrode 20.Thus, can access and the roughly equal aperture opening ratio of the 1st embodiment.
In addition, in the 2nd embodiment, the 3rd dielectric film 53 as dielectric film is arranged between pixel electrode 10 and the common electrode 20, the adjustment of the size of all auxiliary capacitors becomes easily, can set the thickness d 1 of the 3rd dielectric film 53 as thin as a wafer.Thus, can access the action effect identical with the 1st above-mentioned embodiment.
Especially, in the 2nd embodiment because seeing that with source line 32 plane earths overlapping mode is provided with common electrode 20, so can reduce the influence that the fringing field (electric field E) that takes place gives the sub-pixel of other adjacent with this sub-pixel in sub-pixel arbitrarily.About this point, narrate with reference to Fig. 8 (a) with (b).
Fig. 8 (b) is along the fragmentary cross-sectional view of the device substrate 93 of the cut-out line D-D ' of Fig. 6, the corresponding sectional view of part of special expression and 2 sub-pixel of the both sides that are arranged on a source line 32 and this source line 32.Fig. 8 (a) is the fragmentary cross-sectional view of the device substrate 95 of the comparative example corresponding with Fig. 8 (b) on the other hand.
At first, the formation to the device substrate 95 of comparative example simply describes.
In comparative example with above formation, when it drives, shown in figure, between pixel electrode 10 and common electrode 20, has the fringing field (electric field E) of highfield composition in the direction (the last side direction of paper) of the direction of the real estate almost parallel of opposed member substrate 95 and approximate vertical.Here, when the voltage that for example drives pixel electrode 10L was high, the intensity of the corresponding fringing field (electric field E) that takes place between this pixel electrode 10L and common electrode 20 with it is grow also.Thus, constitute this fringing field (electric field E) a part electric field Ex might to till adjacent pixel electrode 10R and the state of orientation of liquid crystal molecule 4a that is positioned at the upside of this pixel electrode 10R produce bad influence.
In contrast to this, in the 2nd embodiment, can not produce such problem.
That is, in the 2nd embodiment, when it drives, shown in Fig. 8 (b), at pixel electrode 10 be arranged on the upside of source line 32 and plane earth is seen fringing field (electric field E) is taken place between the overlapping common electrode 20.Here, in the 2nd embodiment, when the voltage that for example drives pixel electrode 10L is high, the intensity of the corresponding fringing field (electric field E) that takes place between this pixel electrode 10L and common electrode 20 with it is grow also, but this fringing field (electric field E) can not seen the existence of overlapping common electrode 20 and till involving adjacent pixel electrodes 10R based on the upside that is arranged on source line 32 and plane earth.Thus, owing to do not produce the such problem of above-mentioned comparative example, all can prevent from the state of orientation of the liquid crystal molecule 4a of the upside that is positioned at adjacent pixel electrodes 10R is produced bad influence, obtain good display quality, and can realize more high resolving powerization.And the action effect of other the 2nd embodiment is identical with the 1st embodiment.
Variation
In the 1st and the 2nd above-mentioned embodiment, the present invention has been applicable to the liquid-crystal apparatus of infiltration type, but has been not limited thereto, also can be applicable to the present invention the liquid-crystal apparatus of reflection-type or semi-transparent semi-reflective.
In addition, in above-mentioned the 1st and the 2nd embodiment the present invention is applicable to the liquid-crystal apparatus with LTPS type TFT element 21.But be not limited thereto, in the present invention, also can be applicable to that with the TFT element of P-Si type or the TFT element of α-Si type etc. be three terminal type elements of representative to the present invention in the scope that does not break away from its purport, perhaps be the non-line elements of two-terminal type of representative with the TFD element.
In addition, in the 1st above-mentioned embodiment, each the grooving 10a that is arranged at pixel electrode 10 is set up in the mode that the 2nd bearing of trend that connects up 33b relative to grid line 33 rotates the direction extension of predetermined angular widdershins.But be not limited thereto, among the present invention, also can be each the grooving 10a that is arranged at pixel electrode 10 to be provided with across the certain interval and the mode of extending at the bearing of trend of source line 32 at the bearing of trend of the 2nd wiring 33b of grid line 33.In addition, in the present invention also can be in the 2nd embodiment being arranged at common electrode 20 each grooving 20a to be provided with across the certain interval and the mode of extending at the bearing of trend of source line 32 at the bearing of trend of the 2nd wiring 33b of grid line 33.In these cases, frictional direction R preferably deasil rotates predetermined angular θ relative to the bearing of trend of source line 32 and is preferably set to about 5 °.Thus, can be easily liquid crystal molecule 4a based on fringing field (electric field E) with each grooving 10a or the 20a direction reorientation of quadrature roughly.
In addition, in the 2nd embodiment, corresponding to each common electrode 20 of corresponding respectively each sub-pixel of dyed layer 6R and 6B seeing that with source line 32 plane earths overlapping mode forms, and corresponding to the common electrode 20 of the sub-pixel corresponding with dyed layer 6G to see that with source line 32 plane earths of the both sides that are arranged at this sub-pixel overlapping mode forms.But be not limited thereto, in the present invention common electrode 20 also can with the sub-pixel faciation that become row at each transverse direction (directions X) of Fig. 1 to mode form bandedly.Thus, part at the source line 32 of transverse direction between adjacent pixel electrodes 10 of Fig. 1, see overlappingly with common electrode 20 plane earths, betide the influence that the fringing field of sub-pixel (electric field E) is arbitrarily given the sub-pixel of other adjacent with this sub-pixel so can reduce.
In addition, in the present invention, it is such also can be set to the 1st embodiment according to specification at the common electrode line 20X of the 2nd embodiment setting.
In addition, in the scope that does not break away from purport, can carry out all distortion in the present invention.
Electronic equipment
Below, to can be suitable for the of the present invention the 1st or the concrete example of the electronic equipment of the liquid-crystal apparatus 100,200 of the 2nd embodiment describe with reference to Fig. 9.
At first, to the of the present invention the 1st or the liquid-crystal apparatus 100,200 of the 2nd embodiment be applicable to that the example of the display part of portable personal computer (so-called notebook personal computer) describes.Fig. 9 (a) is the stereographic map of the formation of this personal computer of expression.Shown in figure, personal computer 710 possesses: have the main frame portion 712 of keyboard 711 and be suitable for the display part 713 of liquid crystal indicator of the present invention as panel.
Then, to the of the present invention the 1st or the liquid-crystal apparatus 100,200 of the 2nd embodiment be applicable to that the example of the display part of mobile phone describes.Fig. 9 (b) is the stereographic map of the formation of this mobile phone of expression.Shown in figure, mobile phone 720 is to have outside a plurality of action buttons 721, have receiver 722, microphone 723 and be suitable for the of the present invention the 1st or the display part 724 of the liquid-crystal apparatus 100,200 of the 2nd embodiment.
And, as being suitable for the of the present invention the 1st or liquid-crystal apparatus 100,200 electronic equipments of the 2nd embodiment, except the personal computer shown in Fig. 9 (a), outside the mobile phone shown in Fig. 9 (b), can also enumerate LCD TV, video recorder of the type monitor direct viewing type of finding a view, vehicle navigation apparatus, beeper, electronic notebook, counter, word processor, workstation, videophone, POS terminal, digital camera etc.
Claims (22)
1. liquid-crystal apparatus is characterized in that:
Have public electrode, be connected in the pixel electrode of on-off element and be arranged at described public electrode and described pixel electrode between dielectric film,
Wherein, described pixel electrode and described public electrode are seen overlapping at the viewing area plane earth, utilize the orientation of electric field that the upside at described pixel electrode takes place and the electric field controls liquid crystal that takes place between described public electrode and described pixel electrode;
And this liquid-crystal apparatus has the planarization film in the upside setting of described on-off element,
Upside at described planarization film is provided with described public electrode, is provided with described dielectric film at the upside of described public electrode, and is provided with described pixel electrode at the upside of described dielectric film.
2. liquid-crystal apparatus according to claim 1 is characterized in that: described pixel electrode is electrically connected with described on-off element by the contact hole that is arranged at described planarization film, and described public electrode forms opening in the position corresponding with described contact hole.
3. according to claim 1 or the described liquid-crystal apparatus of claim 2, it is characterized in that:
Described public electrode forms on the roughly whole one side of described planar film.
4. according to any described liquid-crystal apparatus in the claim 1～3, it is characterized in that:
Described pixel electrode is provided with grooving, and the electric field of described transverse direction takes place between described pixel electrode and described public electrode across described grooving and described dielectric film.
5. according to any described liquid-crystal apparatus in the claim 1～4, it is characterized in that:
Described on-off element is the TFT element, and described TFT element is provided with dielectric film, is formed with the repeater electrode that is electrically connected described TFT element and described pixel electrode on described dielectric film.
6. according to any described liquid-crystal apparatus in the claim 1～5, it is characterized in that:
Described public electrode and described pixel electrode are made of transparent material.
7. liquid-crystal apparatus is characterized in that:
Have the substrate that keeps liquid crystal and see the 1st overlapping electrode and the 2nd electrode with being arranged at described substrate and mutual plane,
Utilization occurs in the electric field of upside of described the 2nd electrode and the orientation of the electric field controls liquid crystal that takes place between described the 1st electrode and described the 2nd electrode;
Wherein, between described the 1st electrode and described the 2nd electrode, have dielectric film and form auxiliary capacitor,
Described dielectric film has makes described auxiliary capacitor become the thickness of 100fF～800fF.
8. liquid-crystal apparatus according to claim 7 is characterized in that:
Further have the on-off element that is arranged at described substrate and be arranged at the planarization film of the upside of described on-off element, wherein, described the 1st electrode, described dielectric film, and described the 2nd electrode be arranged at the upside of described planarization film.
9. according to claim 7 or 8 described liquid-crystal apparatus, it is characterized in that:
Described the 2nd electrode is provided with grooving, across described grooving and described dielectric film, the electric field of described transverse direction takes place between described the 1st electrode and described the 2nd electrode.
10. according to any described liquid-crystal apparatus in the claim 7～9, it is characterized in that:
Described dielectric film has makes described auxiliary capacitor become the thickness of 100fF～800fF.
11. any described liquid-crystal apparatus according in the claim 7～9 is characterized in that:
Described dielectric film has makes described auxiliary capacitor become the thickness of 200fF～800fF.
12. any described liquid-crystal apparatus according in the claim 7～11 is characterized in that:
Described the 1st electrode is a public electrode, and described the 2nd electrode is the pixel electrode that is connected with described on-off element.
13. any described liquid-crystal apparatus in the claim 7～11 is characterized in that:
Described the 1st electrode is the pixel electrode that is connected with described on-off element, and described the 2nd electrode is a public electrode.
14. any described liquid-crystal apparatus according to Claim 8～13 is characterized in that: the described the 1st and the 2nd electrode is made of transparent material.
15. any described liquid-crystal apparatus according in the claim 7～14 is characterized in that: further have the wiring that is connected with described on-off element,
Wherein, described wiring is covered by described planarization film.
16. a liquid-crystal apparatus is characterized in that:
Have public electrode, a plurality of pixel electrode, be configured in the dielectric film between described pixel electrode and the described public electrode;
Wherein, be provided with described dielectric film, be provided with described public electrode at the upside of described dielectric film at the upside of described pixel electrode,
The orientation of the electric field controls liquid crystal that utilization takes place between electric field that the upside of described public electrode takes place and each and described public electrode at described a plurality of pixel electrodes,
Described public electrode also is configured on the zone between described a plurality of pixel electrode.
17. liquid-crystal apparatus according to claim 16 is characterized in that:
Possess: substrate, be arranged at the on-off element of described substrate and be arranged at the planarization film of the upside of described on-off element;
Upside at described planarization film is provided with described pixel electrode.
18., it is characterized in that according to claim 17 or 18 described liquid-crystal apparatus:
Described a plurality of pixel electrode clips the wiring that is connected with described on-off element and is configured, and described wiring and described public electrode plane earth are seen overlappingly and are configured, and covered by described planarization film.
19. liquid-crystal apparatus according to claim 18 is characterized in that:
Described wiring is the source line that is connected in described on-off element.
20. any described liquid-crystal apparatus according in the claim 16～19 is characterized in that:
Described public electrode is provided with according to described each pixel,
Each public electrode is connected with the public electrode wire littler than described public electrode resistance.
21. any described liquid-crystal apparatus according in the claim 16～20 is characterized in that:
Described public electrode and described pixel electrode are made of transparent material.
22. an electronic equipment is characterized in that: possess according to any described liquid-crystal apparatus in the claim 1～21.
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- 2007-01-26 CN CN 200710008278 patent/CN101008750A/en active Pending
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| CN101446716A (en) | 2009-06-03 |
| CN101446715A (en) | 2009-06-03 |
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