The application is that application number is 200410083181.5, and the applying date is on September 27th, 2002, and denomination of invention is the dividing an application of application of " display device ".
Embodiment
Accompanying drawing below with reference to embodiment is described in detail example of the present invention.
Fig. 1 is the schematic plan view of the 1st embodiment of explanation liquid crystal indicator of the present invention.This liquid crystal indicator is that the 1st substrate SUB1 and the 2nd substrate SUB2 are fitted, and encloses the liquid crystal (not shown) and form viewing area AR between two substrates, seals with encapsulant around it.Label INJ is that liquid crystal is enclosed mouth, shuts with closed material behind the inclosure liquid crystal between two substrates.Zone beyond the AR of viewing area is called frame region.In addition, the avris of the 1st substrate SUB1 (downside of Fig. 1) exposes from the 2nd substrate SUB2.
Be provided with data line drive circuit (data drive circuit: SIC (semiconductor integrated circuit) or chip) DDR and select lines driving circuit (gating drive circuit: SIC (semiconductor integrated circuit) or chip) GDR1, GDR2, its input terminal DDM, GDM1, GDM2 and various power pad P-PAD1, P-PAD2, P-PAD3 with this part of viewing area AR adjacency.This part is called driving circuit installation region BR.Above-mentioned input terminal DDM, GDM1, GDM2 and various power pad P-PAD1, the P-PAD2 of this driving circuit installation region BR, P-PAD3 are connected with the lead-out terminal of not shown flexible printing electric substrate.In addition, data line drive circuit and select lines driving circuit are so-called integrated circuit, but to be not limited to be chip, also comprise directly to make on substrate.Following examples are also identical.
On the viewing area of the 1st substrate SUB1 has vertical (the 1st direction) at this substrate, extend in many data lines DL that laterally (the 2nd direction) is set up in parallel, be connected with the lead-out terminal of the data line drive circuit DDR that is installed on driving circuit installation region BR.In addition, equally on having horizontal (the 2nd direction) at this substrate, the viewing area of the 1st substrate SUB1 extends in the many select lines GL that vertical (the 1st direction) is set up in parallel.The relative viewing area AR of this select lines GL is divided into up and down two crowds of GL1 and GL2, each group utilizes respectively respectively the select lines by the frame region on left side and right side go between distribution GLL1, GLL2 be installed on driving circuit installation region BR in for drive the select lines driving circuit GDR1 that above-mentioned two gating line-groups are provided with, the lead-out terminal of GDR2 is connected.
Like this, by to two groups of distributions separately, viewing area AR can be disposed at substantial middle place on the 1st substrate SUB1 left and right directions, promptly so-called picture center configuration.
In addition, at viewing area AR, a plurality of thin film transistor (TFT)s as on-off element that all are provided with at each pixel place of data line DL and the formation of select lines GL cross section omit in the drawings.In addition, the pixel that each thin film transistor (TFT) forms has pixel electrode, and is also not shown among the figure.
Inner face at the 2nd substrate SUB2 forms the counter electrode relative with pixel electrodes.In addition, the occasion that shows at colour is provided with a plurality of colored filters in the upper strata or the lower floor of this counter electrode, all omits diagram with counter electrode.Counter electrode connection pads C-PAD1, the C-PAD2 in the top bight of counter electrode through being arranged at the 1st substrate SUB1 is connected with power pad P-PAD1, the P-PAD2, the P-PAD3 that have on the BR of driving circuit installation region with bridging line B1, B2.
Between the select lines GL of the 1st substrate SUB1 (GL1, GL2), form storage line STL.The viewing area of relative the 1st substrate SUB1 of this storage line STL is divided into two groups up and down, the bridging line B3 that following side group utilization is arranged at the left side is connected with power pad P-PAD2 among the BR of driving circuit installation region, and on the side group utilization be arranged at the bridging line B2 on right side and be connected with power pad P-PAD3 among the BR of driving circuit installation region.
Power supply to storage line STL is undertaken by power pad P-PAD2, P-PAD3.In addition, because counter electrode connection pads C-PAD1 is connected with counter electrode with C-PAD2, we can say that also storage line STL is by counter electrode connection pads C-PAD1 and C-PAD2 and power pad P-PAD1 power supply.Even bridging line B1, B2 break for some reason or resistance increases, also can be enough abundant to the power supply of storage line STL.
Utilize the formation as present embodiment, storage line Wiring pattern (storage line and bridging line) and select lines Wiring pattern (select lines and select lines lead-in wire distribution) do not have the place of intersection on base plan.Therefore, storage line STL and select lines GL can form in layer.In addition, even the occasion that forms in other layer owing to there is not the part of leap mutually, can need not to consider to take place the problem of disconnection defect.In addition,, utilizing the patterned occasion of aluminium in layer, can in an operation, be used for avoiding taking place the anodic oxidation of hillock, can not increase manufacturing process because storage line STL and select lines GL form.In addition, because each distribution comprises the lead-in wire distribution, be that left-right symmetric is disposed among the AR of viewing area, viewing area AR can be disposed at the central authorities of liquid crystal indicator.
In addition, the power pad P-PAD2 that applies a voltage to the storage line Wiring pattern is formed between splicing ear (GDM1) that is associated with select lines and the splicing ear (DDM) that is associated with data line, power pad P-PAD2 power supply from then on.So,, also can power even the storage line Wiring pattern is the occasion that is separated into 2 formation as present embodiment.In addition, also select lines driving circuit GDR1, GDR2 and data line drive circuit DDR can be made in and become a circuit on the chip.These explanations to the embodiment of back too.
Like this, according to present embodiment, can not increase manufacturing process and the liquid crystal indicator of the high storage line mode of reliability is provided.
Fig. 2 is the schematic plan view of the 2nd embodiment of explanation liquid crystal indicator of the present invention.The same funtion part of the symbolic representation identical with Fig. 1.Present embodiment is in the BR of the driving circuit installation region of above-mentioned the 1st embodiment data line drive circuit DDR only to be installed, and the select lines driving circuit carries the configuration example with the occasion of not shown flexible printed circuit substrate side.The configuration that is arranged at data line DL, select lines GL on the AR of viewing area and storage line STL is identical with the 1st embodiment, illustrates no longer to repeat.
In the present embodiment, select lines lead-in wire distribution GLL1, GLL2 directly are connected with select lines terminal GTM1, the GTM2 at BR place, driving circuit installation region.The lead-out terminal of the select lines driving circuit (identical with GDR1, GDR2 among Fig. 1) that carries on select lines terminal GTM1, GTM2 and the not shown flexible printed circuit substrate is connected, and powers to select lines GL1, GL2.So the area that is arranged at the various distributions of driving circuit installation region BR and pad can be big.
The formation of utilization as the present embodiment, the same with the 1st embodiment, storage line Wiring pattern and select lines Wiring pattern do not have the place of intersection on base plan, and storage line STL and select lines GL can form in layer.In addition, even the occasion that forms in other layer owing to there is not the part of leap mutually, can need not to consider to take place the problem of disconnection defect.In addition,, utilizing the patterned occasion of aluminium in layer, can in an operation, be used for avoiding taking place the anodic oxidation of hillock, can not increase manufacturing process because storage line STL and select lines GL form.In addition, because each distribution comprises the lead-in wire distribution, be that left-right symmetric is disposed among the AR of viewing area, viewing area AR can be disposed at the central authorities of liquid crystal indicator.
In addition, the power pad P-PAD2 that applies a voltage to the storage line Wiring pattern is that to be formed at the splicing ear that is associated with select lines (different with Fig. 1, be GTM1 herein) and the splicing ear (DDM) that is associated with data line between, power pad P-PAD2 power supply from then on.In addition, in addition, also data line drive circuit can be arranged at beyond the 1st substrate SUB1, data terminal from the data line driving voltage to data line DL that supply be set on the 1st substrate SUB1, it is connected with the output of data line drive circuit as the splicing ear that is associated with data line.These explanations to the embodiment of back too.
Like this, the same according to present embodiment with the 1st embodiment, can not increase manufacturing process and the liquid crystal indicator of the high storage line mode of reliability is provided.
Fig. 3 is the schematic plan view of the 3rd embodiment of explanation liquid crystal indicator of the present invention.The symbolic representation same funtion part identical with Fig. 1 and Fig. 2.This liquid crystal indicator is that the select lines that will be shown among Fig. 1 or Fig. 2 replaces the device of the select lines of each group that will utilize select lines driving circuit GDR1 and GDR2 driving to viewing area AR mutual extension from the left and right sides.Follow the configuration of this select lines, be divided into up and down two crowds storage line STL, per two clip a select lines and are connected with bridging line B2 or B3.
In other words, the group of upside powers by counter electrode connection pads C-PAD2 from power pad P-PAD3 with bridging line B2, and the group of downside is to power from power pad P-PAD2 with bridging line B3.In addition, also can bridging line B2 be connected to power pad P-PAD3 without counter electrode connection pads C-PAD2.
As present embodiment, at least a portion of a plurality of storage line STL by being connected with the bridging line of the frame region of left side side and the bridging line of the frame region of the right side, can form the pattern that does not have distribution to cross over.In addition, in the present embodiment, the storage line pattern forms crooked pattern between the bridging line of the left and right sides.In the present embodiment, storage line STL is one group with two to be bent to form, but also can forms crooked pattern more than 3 to be one group.These explanations to the embodiment of back too.
The formation of utilization as the present embodiment, the same with the 1st embodiment and the 2nd embodiment, storage line Wiring pattern and select lines Wiring pattern do not have the place of intersection on base plan, and storage line STL and select lines GL can form in layer.In addition, even the occasion that forms in other layer owing to there is not the part of leap mutually, can need not to consider to take place the problem of disconnection defect.In addition,, utilizing the patterned occasion of aluminium in layer, can in an operation, be used for avoiding taking place the anodic oxidation of hillock, can not increase manufacturing process because storage line STL and select lines GL form.In addition, because each distribution comprises the lead-in wire distribution, be that left-right symmetric is disposed among the AR of viewing area, viewing area AR can be disposed at the central authorities of liquid crystal indicator.
Like this, the same according to present embodiment with the 1st embodiment and the 2nd embodiment, can not increase manufacturing process and the liquid crystal indicator of the high storage line mode of reliability is provided.
Fig. 4 is the schematic plan view of the 4th embodiment of explanation liquid crystal indicator of the present invention.
The same funtion part of the symbolic representation identical with Fig. 3.Present embodiment is an installation data line drive circuit DDR in the BR of the driving circuit installation region of above-mentioned the 3rd embodiment, and the select lines driving circuit is equipped on the configuration example of the occasion of not shown flexible printed circuit substrate side.Because it is the same with the 3rd embodiment to be arranged at the configuration of data line DL, select lines GL, storage line STL of viewing area AR, its explanation no longer repeats.
In the present embodiment, select lines lead-in wire distribution GLL1, GLL2 directly be arranged at driving circuit installation region BR in select lines terminal GTM1, GTM2 be connected.Select lines terminal GTM1, GTM2 are connected with the lead-out terminal of select lines driving circuit (identical with GDR1, the GDR2 of Fig. 1) on being equipped on not shown flexible printed circuit substrate, supply with driving voltage to select lines GL1 and GL2.So the area that is arranged at the various distributions of driving circuit installation region BR and pad can be big.
The formation of utilization as the present embodiment, the same with the 3rd embodiment, storage line Wiring pattern and select lines Wiring pattern do not have the place of intersection on base plan, and storage line STL and select lines GL can form in layer.In addition, even the occasion that forms in other layer owing to there is not the part of leap mutually, can need not to consider to take place the problem of disconnection defect.In addition,, utilizing the patterned occasion of aluminium in layer, can in an operation, be used for avoiding taking place the anodic oxidation of hillock, can not increase manufacturing process because storage line STL and select lines GL form.In addition, because each distribution comprises the lead-in wire distribution, be that left-right symmetric is disposed among the AR of viewing area, viewing area AR can be disposed at the central authorities of liquid crystal indicator.
Like this, the same according to present embodiment with the 1st~the 3rd embodiment, can not increase manufacturing process and the liquid crystal indicator of the high storage line mode of reliability is provided.
Fig. 5 is the synoptic diagram of the distribution configuration of the 5th embodiment of explanation liquid crystal indicator of the present invention.The corresponding same funtion part of the symbol identical with Fig. 1 and Fig. 2.In the liquid crystal indicator of above-mentioned the 1st embodiment and the 2nd embodiment, in the top and the bottom of viewing area AR, be divided into a plurality of crowds storage line STL, in the AR of this viewing area, be independently physically.In the present embodiment, with the group's of the corresponding storage line STL of cutting apart of the 1st crowd select lines GL1 bridging line B4 be connected at the two ends of viewing area AR stored line STL and be connected physically with the group's of the corresponding storage line STL of cutting apart of the 2nd crowd select lines GL2 bridging line B3.In addition, bridging line B4 also can replace with bridging line B2.But, distribution can not intersect.The following examples too.
By will cut apart like this group storage line STL connect, can be on the effect of the various embodiments described above, the occasion that can occur bad connection at a side feed circuit is guaranteed power supply, and, by two ends power supplies, can suppress to supply with the passivation of the voltage waveform of storage line STL.The liquid crystal indicator of the high storage line mode of reliability can be provided thus.
As present embodiment, utilize at least a portion of a plurality of storage line STL at least, the bridging line of the frame region by making left side side and the bridging line of the frame region of the right side link to each other, and can form does not have the pattern crossed over.In addition, be integrally formed occasion at storage line Wiring pattern as present embodiment, there is no need the two ends power supply, such as, also can only power from power pad P-PAD2.These explanations to the embodiment of back too.
Fig. 6 is the synoptic diagram of the distribution configuration of the 6th embodiment of explanation liquid crystal indicator of the present invention.The corresponding same funtion part of the symbol identical with Fig. 5.Present embodiment, the storage line storage line STL of the liquid crystal indicator of above-mentioned the 1st embodiment and the 2nd embodiment is in the top and the bottom of viewing area AR, be divided into a plurality of groups, and in the AR of this viewing area, be independently physically, in the present embodiment, the same with the 5th embodiment, with the group's of the corresponding storage line STL of cutting apart of the 1st crowd select lines GL1 bridging line B4 be connected at the two ends of viewing area AR stored line STL and be connected physically with the group's of the corresponding storage line STL of cutting apart of the 2nd crowd select lines GL2 bridging line B3.So, to the corresponding storage line STL of cutting apart of the 2nd crowd select lines GL2 group bridging line B3 power pad is not set.So, these storage lines STL is also powered from power pad P-PAD3.
According to present embodiment, can cut down the pad number that is arranged at driving circuit installation region BR, can effectively utilize the space of this driving circuit installation region BR and the liquid crystal indicator of the high storage line mode of reliability is provided.
Fig. 7 is the synoptic diagram of the distribution configuration of the 7th embodiment of explanation liquid crystal indicator of the present invention.The corresponding same funtion part of the symbol identical with Fig. 5 and Fig. 6.In the liquid crystal indicator of above-mentioned the 3rd embodiment and the 4th embodiment, storage line storage line STL is divided into a plurality of groups in the top and the bottom of viewing area AR, and in the AR of this viewing area, be independently physically, in the present embodiment, it coupled together physically.
Couple together by the storage line STL group that will cut apart like this, the same with the foregoing description 5, the occasion that can occur bad connection at a side feed circuit is guaranteed power supply, and, power by two ends, can suppress to supply with the passivation of the voltage waveform of storage line STL, the liquid crystal indicator of the high storage line mode of reliability can be provided.
Fig. 8 is the synoptic diagram of the distribution configuration of the 8th embodiment of explanation liquid crystal indicator of the present invention.The corresponding same funtion part of the symbol identical with Fig. 7.Be arranged in the present embodiment respectively and the bridging line B3 of the storage line STL of Fig. 7 and bridge winding thread BCL1, the BCL2 that B4 is connected.This bridge winding thread BCL1, BCL2 are arranged on select lines GL and the storage line STL through an insulation course.Be provided with contact hole in the bridging line B3 of insulation course, the position of B4.So, increased the operation that forms bridge winding thread BCL1, BCL2, but can be reliably to storage line STL power supply, the liquid crystal indicator that can provide reliability more to increase.Do not increasing operation with data line DL with the occasion that layer forms yet.
Fig. 9 is the synoptic diagram of the distribution configuration of the 9th embodiment of explanation liquid crystal indicator of the present invention.Present embodiment is the power pad P-PAD2 that removes above-mentioned the 7th embodiment, and is the same with the 6th embodiment, through the formation of power pad P-PAD3 to storage line STL power supply.
According to present embodiment, can cut down the pad number that is arranged at driving circuit installation region BR, can effectively utilize the space of this driving circuit installation region BR and the liquid crystal indicator of the high storage line mode of reliability is provided.
Figure 10 is the synoptic diagram of the distribution configuration of the 10th embodiment of explanation liquid crystal indicator of the present invention.Present embodiment is to be arranged on the bridge winding thread BCL1 that illustrates among the 8th embodiment, the embodiment of BCL2 in above-mentioned the 9th embodiment.This bridge winding thread BCL1, BCL2 are the same with Fig. 8, are to be arranged on select lines GL and the storage line STL through an insulation course.Be provided with contact hole in the bridging line B3 of insulation course, the position of B4.So, increased the operation that forms bridge winding thread BCL1, BCL2, but can be reliably to storage line STL power supply, the liquid crystal indicator that can provide reliability more to increase.Do not increasing operation with data line DL with the occasion that layer forms yet.Other formations are identical with the 9th embodiment with effect.
Figure 11 is the schematic plan view of the 11st embodiment of explanation liquid crystal indicator of the present invention.The variation that is equivalent to the embodiment of Fig. 1 is the formation of installation data line drive circuit DDR and two select lines driving circuit GDR1, GDR2 in the BR of driving circuit installation region.Among the figure, the function that the label identical with the various embodiments described above is corresponding same.In the formation of above-mentioned Fig. 1, Fig. 2 or Fig. 5, Fig. 6, promptly in the top and the bottom of storage line, be divided in 2 groups the liquid crystal indicator of formation in the effective coverage, difference can appear in the supplying resistance of this distribution sometimes.Such as, in the very thin occasion of a part of the distribution that connects power pad P-PAD2 and bridging line B3.The voltage difference that is caused by this resistance difference can cause luminance difference between the picture that is connected to storage line up and down pixel up and down, cause the image quality deterioration,
The basic distribution of Figure 11 is identical with Fig. 1.In this liquid crystal indicator, towards Figure 11 the time in the frame region in the left side of viewing area AR, have a plurality of select liness lead-in wire distributions, the distribution in its both sides be with counter electrode connection pads C-PAD1 be connected to the bridging line B1 of power pad P-PAD1 with the common bridging line B3 that is connected of the storage line STL of downside.So the distribution area of bridging line B3 is compared with the bridging line B2 that is provided with in the frame region on AR right side, viewing area in the face of Figure 11, is difficult to guarantee sufficient distribution width.As a result, just produce the above-mentioned picture luminance difference between pixel up and down.
In the present embodiment, connection counter electrode connection pads C-PAD1 is electrically connected by auxiliary bridging line CBL with the common bridging line B3 that is connected the storage line STL of downside to the bridging line B1 of power pad P-PAD1.In this occasion, bridging line B1 also can be described as the power supply distribution.The counter electrode of counter electrode connection pads C-PAD1 on the 2nd substrate SUB2 is connected to the power pad P-PAD3 on AR right side, viewing area.Thus, the current potential of storage line STL that is connected to the downside of bridging line B1 becomes the same with the current potential of the storage line STL of upside.In addition, auxiliary bridging line CBL is defined as the inscape that is not counted in the storage line Wiring pattern.So Wiring pattern does not intersect with the storage line Wiring pattern.
Figure 12 is the sectional view along the auxiliary bridging line part of B-B ' line of Figure 11.Auxiliary bridging line CBL crosses over select lines lead-in wire distribution GLL1 and is electrically connected to bridging line B1 and B3.And select lines lead-in wire distribution GLL1 between insulate with select lines insulation course GI.This auxiliary bridging line CBL can be formed by semiconductor independently, also can be formed by the conductive material identical with data line DL, can form simultaneously in the patterning operation of data line DL.In other words, after select lines lead-in wire distribution GLL1 forms, cover select lines insulation course GI, on the select lines insulation course GI of the coupling part of bridging line B1 and B3, produce contact hole, when data line DL patterning, form auxiliary bridging line CBL as the bridge circuit of bridging line B1 and B3.Select lines Wiring pattern and storage line Wiring pattern preferably form in layer with mutual identical materials.
According to present embodiment, can relax because the bridging line B1 of storage line up and down and the caused voltage difference of resistance difference of B3 are given in power supply, can relax and these luminance differences of the pixel that is connected of storage line up and down, can improve image quality.In addition, also the storage line of upside and the storage line B point in the drawings of downside can be coupled together.In addition, as adopt this formation, also can save the power pad P-PAD2 that is arranged in the driving circuit installation region, can make the configuration nargin in the terminal space that is used for connecting external circuit bigger.
Figure 13 is the schematic plan view of the 12nd embodiment of explanation liquid crystal indicator of the present invention, is equivalent to the variation of Fig. 2, can solve the problem same with Figure 11.Among the figure, the function that the label identical with the various embodiments described above is corresponding same.
The basic distribution of Figure 13 is identical with Fig. 2.The same with Fig. 2, this liquid crystal indicator is the formation of installation data line drive circuit DDR.In this liquid crystal indicator also be, towards Figure 13 the time in the frame region in the left side of viewing area AR, have a plurality of select liness lead-in wire distribution GLL1, the distribution in its both sides be with counter electrode connection pads C-PAD1 be connected to the bridging line B1 of power pad P-PAD1 with the common bridging line B3 that is connected of the storage line STL of downside.So the distribution area of bridging line B3 is compared with the bridging line B2 that is provided with in the frame region on AR right side, viewing area in the face of Figure 13, is difficult to guarantee sufficient distribution width.As a result, just produce the above-mentioned picture luminance difference between pixel up and down.
In the present embodiment, connection counter electrode connection pads C-PAD1 is electrically connected by auxiliary bridging line CBL with the common bridging line B3 that is connected the storage line STL of downside to the bridging line B1 of power pad P-PAD1.The counter electrode of counter electrode connection pads C-PAD1 on the 2nd substrate SUB2 is connected to the power pad P-PAD3 on AR right side, viewing area.Thus, the current potential of storage line STL that is connected to the downside of bridging line B1 becomes the same with the current potential of the storage line STL of upside.In addition, the cross-sectional configuration along B-B ' line of the auxiliary bridging line CBL of Figure 13 is identical with Figure 12.In addition, other formation is identical with effect and Figure 11.
Figure 14 is near the schematic plan view of the configuration example the pixel of the 1st substrate of explanation liquid crystal indicator of the present invention.Among the figure, label DL is that data line, GL are that select lines, STL are that storage line, ITO are that pixel electrode, TFT are that thin film transistor (TFT), Cstg are memory capacitance.Two data lines DL and two zone formation pixels that select lines GL impales.This pixel has the pixel electrodes ITO that driven by thin film transistor (TFT) TFT and the not shown counter electrode that is arranged on the 2nd substrate.
Near select lines GL and parallel formation storage line STL, form memory capacitance Cstg at this storage line STL and the overlapping part of pixel electrode ITO.In Figure 14, the width that is used for forming the storage line STL of memory capacitance Cstg has enlarged in pixel, this expansion might not be necessary, and the characteristic according to the dielectric (insulation course) between storage line STL and the pixel electrode ITO can make storage line STL form straight line.
In addition, the formation position of this memory capacitance Cstg is not limited to illustrated part, such as, at liquid crystal indicator of reflection-type, part transmission-type or Semitransmissive etc., do not need to consider in the device of the needed aperture opening ratio of transmissive liquid crystal display device, can make storage line pass through center portion of pixels yet.The configuration of storage line STL such as above-mentioned Fig. 1~13 explanation and forming.In addition, in Figure 14, semiconductor layer SI etc. illustrate omission.
Figure 15 is the sectional view along the 1st substrate of A-A ' line of Figure 14.The corresponding same funtion part of the symbol identical with Figure 14.Among the figure, SUB1 is the 1st substrate, on this 1st substrate SUB1, forms the gate G and the storage line STL that extend from select lines.Gate G and storage line STL are coated by select lines insulation course GI (such as SiN), form the thin film transistor (TFT) TFT that is made up of semiconductor layer SI, drain electrode SD1 and source electrode SD2 on gate G.In addition, comprise the gate G of select lines and the surface of storage line STL and have the oxide film AO that forms through anodic oxidation.In addition, semiconductor layer SI both can be an amorphous silicon (a-Si), also can be polysilicon (p-Si), it is contemplated that the structure according to the thin film transistor (TFT) of its characteristic, and hypothesis is a-Si herein.
Comprise thin film transistor (TFT) TFT, select lines insulation course GI on a passivation layer PAS is arranged on whole pixel region, on this passivation layer PAS, form pixel electrode ITO.This formation owing to be so-called transmissive liquid crystal display device, adopts transparent conductive film as pixel electrode.Pixel electrode ITO is connected with source electrode SD2 by the through hole of opening on passivation layer PAS.In addition, this pixel electrode ITO extends on the upper strata of storage line STL, forms memory capacitance Cstg with storage line STL.
Figure 16 is the suitable sectional view in the cross section with the 1st substrate along A-A ' line of Figure 14 of using occasion of the present invention in the liquid crystal indicator of another structure.The corresponding same funtion part of the symbol identical with Figure 15.In Figure 16, there are not passivation layer PAS and through hole at pixel region.Other formations are identical with Figure 15 with effect.
Figure 17 is near the schematic plan view of another configuration example the pixel of the 1st substrate of explanation liquid crystal indicator of the present invention.In Figure 17, also omitted the diagram of semiconductor layer SI etc.In addition, Figure 18 is the sectional view along the 1st substrate of A-A ' line of Figure 17.This liquid crystal indicator is so-called part transmission-type, and in Figure 14~structure illustrated in fig. 16, the passivation layer PAS that covers select lines insulation course GI is the 1st passivation layer PAS1, forms reflecting electrode RF at the upper strata of pixel electrode the 2nd passivation layer PAS2.In addition, there is not the 2nd passivation layer PAS2 passable yet.
Reflecting electrode RF is metallic film preferably, the part of pixel region and the 2nd passivation layer PAS2 that is positioned at lower floor is come along remove and form opening TP on reflecting electrode RF.In the occasion as transmission-type work, the light that comes from the rear side of the 1st substrate SUB1 (outer light or so-called before light) is reflected by reflecting electrode RF and is mapped to the 2nd substrate-side display image.
At the same time as the occasion of transmission-type and reflection-type work, the light that comes from the rear side of the 1st substrate SUB1 is reflected when being mapped to the 2nd substrate-side by the opening TP of above-mentioned reflecting electrode RF, is reflected in outgoing on the 2nd orientation substrate from the light of the 2nd substrate-side incident by reflecting electrode RF.
Reflecting electrode RF as Figure 17, shown in Figure 180, is having a slit S on the storage line STL and between the reflecting electrode of pixel adjacent.A slit S is being arranged on the drain wire DL and between the reflecting electrode of pixel adjacent equally.Utilize such configuration, can prevent the light leak backlight on the interface of carrying out the adjacent pixels when transmission-type shows and obtain good contrast.
Figure 19 is the suitable sectional view in the cross section with the 1st substrate along A-A ' line of Figure 17 of using occasion of the present invention in the liquid crystal indicator of other another structure.The corresponding same function of the label identical with Figure 17.In Figure 19, at pixel region, there is not passivation layer PAS, pixel electrode ITO is bonded in the 1st substrate SUB1 and goes up formation.The passivation layer PAS that forms in reflecting electrode RF lower floor removes at this pixel region.Other formation and effect are except not having passivation layer PAS2, identical with Figure 17 and Figure 18.
In addition, outside above-mentioned various forms of liquid crystal indicators, replace the pixel electrode ITO that is formed by transparent conductive film of Figure 14~Figure 16, utilization can be made the liquid crystal indicator of reflection-type by the reflecting electrode RF that metallic film etc. forms.In addition, also can constitute the liquid crystal indicator of Semitransmissive with translucent reflecting electrode formation pixel electrode.In addition, the present invention is not limited to the more small-sized liquid crystal indicator that uses in the above-mentioned portable terminal, can be equally certainly to be applied to notebook and other monitors liquid crystal indicator as display screen.In addition, also be not less than liquid crystal indicator, such as, also can be applicable to other forms of display device such as organic EL demonstration.
As in the above embodiments the detailed explanation, according to the present invention, can form the select lines Wiring pattern and the storage line Wiring pattern is not overlapping, distribution does not have the pattern of leap.So, even be divided into group's occasion up and down in the viewing area, also can be provided in whole viewing area and also can relax luminance difference at storage line, obtain the display device of high-quality demonstration.