CN102955300A - Liquid crystal panel - Google Patents
Liquid crystal panel Download PDFInfo
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- CN102955300A CN102955300A CN2011102554569A CN201110255456A CN102955300A CN 102955300 A CN102955300 A CN 102955300A CN 2011102554569 A CN2011102554569 A CN 2011102554569A CN 201110255456 A CN201110255456 A CN 201110255456A CN 102955300 A CN102955300 A CN 102955300A
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Abstract
The invention relates to a liquid crystal panel which comprises a first substrate, a second substrate, a liquid crystal layer, a plurality of data wires, a plurality of scanning wires and a plurality of pixel electrodes, wherein the liquid crystal layer is positioned between the first substrate and the second substrate; two adjacent data wires and two adjacent scanning wires are staggered to form a pixel region; each pixel electrode comprises a main body positioned in the pixel region, a plurality of first branch electrodes and a plurality of second branch electrodes; the first branch electrodes extend from each main body towards the pixel region; the second branch electrodes outwards extend from each main body and across the upper sides of the data wires; first distances are reserved between the two adjacent first branch electrodes; second distances are reserved between the two adjacent second branch electrodes; and each second distance is smaller than each first distance.
Description
Technical field
The invention relates to a kind of liquid crystal panel, and particularly relevant for a kind of pixel electrode have branched structure liquid crystal panel.
Background technology
In liquid crystal panel, the sweep trace that two adjacent data lines and two are adjacent is interlaced and form pixel region.In the configuration of in the past pixel electrode, pixel electrode only is configured in the pixel region, and is not superimposed with each other with data line, to avoid as the pixel electrode of metal material and produce stray capacitance between the data line of metal material.Yet this kind configuration mode often causes the aperture opening ratio of pixel to reduce.In addition, the situation of bit errors is arranged when pixel electrode is configured in the pixel region, the size of pixel electrode can be dwindled usually again, so that aperture opening ratio further reduces.
Along with exploitation and the research of various material, can be by for example being that organic material is used as intermediate medium, so that pixel electrode and data line can be at intervals between pixel electrode and the data line.Thus, the stray capacitance of pixel electrode and data line can reduce, to reduce the impact on voltage signal.In other words, pixel electrode can cross the top of data line, with capable of increasing opening rate so that the ratio of printing opacity can increase.
At present, the pixel electrode of part has branch electrodes, and the branch electrodes of part crosses the top of data line.In general, the gray value differences that shows when neighbouring in liquid crystal panel pixel institute wish is when large, and wish shows that the signal of the pixel of high gray-scale value (for example being white) quite easily has influence on the signal that adjacent wish shows the pixel of low gray-scale value (for example being black).Furthermore, the voltage signal that transmits via data line quite may be scurried out and produces electric field from the spacing between two branch electrodes, so that affect the toppling direction entanglement of liquid crystal molecule.Thus, original predetermined pixel that shows low gray-scale value may have the situation of light leak and affect the quality of demonstration.Therefore, how providing a kind of display panel that improves the situation of light leak, to have good display quality, is one of problem of relevant dealer's effort.
Summary of the invention
The present invention is relevant for a kind of liquid crystal panel, and its design that sees through spacing reduces the situation of light leak, the quality during with the display frame of raising liquid crystal panel and the competitive power of increase product.
According to the present invention, a kind of liquid crystal panel is proposed, comprise a first substrate, a second substrate, a liquid crystal layer, several data lines, several sweep traces and several pixel electrodes.First substrate and second substrate configure with corresponding to each other.Liquid crystal layer is disposed between first substrate and the second substrate.These data lines and these sweep traces are disposed on the first substrate.These data lines appoint adjacent the two the two is interlaced with these sweep traces times adjacent, to form a pixel region.Each pixel electrode comprises a main body, several first branch electrodes and several the second branch electrodes.Main body is positioned at pixel region.These the first branch electrodes autonomous agents extend in pixel region.These the second branch electrodes autonomous agents stretch out and cross over the top of these data lines.These first branch electrodes respectively have one first spacing.These second branch electrodes respectively have one second spacing.The second spacing is less than the first spacing.
According to the present invention, reintroduce a kind of liquid crystal panel, comprise a first substrate, a second substrate, a liquid crystal layer, several data lines, several sweep traces and several pixel electrodes.First substrate and second substrate configure with corresponding to each other.Liquid crystal layer is disposed between first substrate and the second substrate.These data lines and these sweep traces are disposed on the first substrate.These data lines appoint adjacent the two the two is interlaced with these sweep traces times adjacent, to form a pixel region.Each pixel electrode comprises a main body, several first branch electrodes and several the second branch electrodes.Main body is positioned at pixel region.These the first branch electrodes autonomous agents extend in pixel region.These the second branch electrodes autonomous agents stretch out and cross over the top of these sweep traces.These first branch electrodes respectively have one first spacing.These second branch electrodes respectively have one second spacing.The second spacing is less than the first spacing.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Figure 1A illustrates the schematic diagram according to the liquid crystal panel of first embodiment of the invention.
Figure 1B illustrates the top view of the liquid crystal panel of the part among Figure 1A.
Fig. 2 A illustrates the schematic diagram according to the liquid crystal panel of second embodiment of the invention.
Fig. 2 B illustrates the top view of the liquid crystal panel of the part among Fig. 2 A.
Fig. 3 illustrates the partial enlarged drawing of the regional A among Fig. 2 B.
Fig. 4 illustrates the top view according to the liquid crystal panel of the part of third embodiment of the invention.
Fig. 5 illustrates the top view according to the liquid crystal panel of the part of fourth embodiment of the invention.
The main element symbol description:
100,200: liquid crystal panel
110: first substrate
120: second substrate
130: liquid crystal layer
140d: data line
140s: sweep trace
150,250,350,450: pixel electrode
151: main body
1531: the first branch electrodes
1532,2532,3532,4532: the second branch electrodes
160: material layer
2532a, 4532a: connecting portion
2532b, 4532b: leap section
2532c: buffer part
A: zone
Ap: pixel region
D1: the first spacing
D2: the second spacing
S11, s12, s21, s22, s3, s4: side
W1: the first width
W2: the second width
Embodiment
The first embodiment
Please refer to Figure 1A and Figure 1B, Figure 1A illustrates the schematic diagram according to the liquid crystal panel of first embodiment of the invention, and Figure 1B illustrates the top view of the liquid crystal panel of the part among Figure 1A.For the configuration and the shape that clearly illustrate pixel electrode 150, the subelement in the liquid crystal panel 100 does not illustrate out in Figure 1B.
Each pixel electrode 150 comprises main body 151, several first branch electrodes 1531 and several the second branch electrodes 1532.Main body 151 is positioned at pixel region Ap.The first branch electrodes 1531 autonomous agents 151 extend in pixel region Ap.In other words, the first branch electrodes 1531 only is positioned at pixel region Ap.The second branch electrodes 1532 autonomous agents 151 stretch out and cross over the top of data line 140d.These first branch electrodes 1531 respectively have the first spacing d1, and these second branch electrodes 1532 respectively have the second spacing d2.In the present embodiment, the second spacing d2 is less than the first spacing d1.
In general, because branch electrodes is to cross over the top of data line, therefore, when the gray value differences distance that neighbouring pixel institute wish shows in liquid crystal panel was large, wish showed that the signal of the pixel of high gray-scale value quite easily affects the signal that adjacent wish shows the pixel of low gray-scale value.Furthermore, the voltage signal that transmits via data line quite may be scurried out and produces electric field from the spacing between two branch electrodes, and the situation of light leak is arranged so that affect the toppling direction entanglement of liquid crystal molecule.In comparison, the second spacing d2 of the top that is positioned at data line 140d of the present embodiment dwindles but incomplete closure.Thus, in the situation that the second spacing d2 dwindles, the liquid crystal molecule that is positioned at the top of data line 140d will not be vulnerable to electric field influence and produce the situation of light leak, to improve display quality.In addition, in the situation that the second spacing d2 is not exclusively closed, the penetrance of pixel still can be kept.
In addition, in general, the large I of the second spacing d2 further adjusts according to the thickness of material layer 160, and allows the factor that the light leak amount does not consist of affects display quality.Please refer to table 1, its table is listed under the thickness of the size of the second different spacing d2 and material layer 160 and simulates, and the second spacing d2 place produces the size of light leak amount.In table 1, out light leak amount of simulation is to carry out normalization (normalize), and the thickness of material layer 160 is the size of 3 μ m and the second spacing d2 when being 6 μ m, and the light leak amount of the second spacing d2 place generation is regularly to turn to 1.Thus, the light leak amount in other fields can be considered the ratio that the thickness with respect to material layer 160 is the light leak amount that produces of the size of 3 μ m and the second spacing d2 the second spacing d2 place when being 6 μ m.
Table 1
In general, if the light leak amount at the second spacing d2 place is 2.31 o'clock through the numerical value after the normalization, the situation of light leak can be apparent in the shown picture of liquid crystal panel.Therefore, if the light leak amount at the second spacing d2 place can be less than 2.31 through the numerical value after the normalization, the side is acceptable numerical value.That is to say, when the thickness of material layer 160 was 2 microns (μ m), the second spacing d2 was less than 4.5 microns (μ m), so that the light leak amount becomes acceptable numerical value.When the thickness of material layer 160 was 2.5 microns (μ m), the second spacing d2 was less than 5.5 microns (μ m), so that the light leak amount becomes acceptable numerical value.When the thickness of material layer 160 was 3 microns (μ m), the second spacing d2 was less than 6 microns (μ m), so that the light leak amount becomes acceptable numerical value.
The second embodiment
Please refer to Fig. 2 A, Fig. 2 B and Fig. 3, Fig. 2 A illustrates the schematic diagram according to the liquid crystal panel of second embodiment of the invention, and Fig. 2 B illustrates the top view of the liquid crystal panel of the part among Fig. 2 A, and Fig. 3 illustrates the partial enlarged drawing of the regional A among Fig. 2 B.For the configuration and the shape that clearly illustrate pixel electrode 250, the subelement in the liquid crystal panel 200 does not illustrate out in Fig. 2 B.
Compared to the liquid crystal panel 100 of the first embodiment, the shape of the pixel electrode 250 of the liquid crystal panel 200 of the present embodiment is different.Other similar structures are with identical component symbol mark and not repeat specification.
In the present embodiment, the first branch electrodes 1531 is wide structure, but the second branch electrodes 2532 is not wide structure, below explains.The second branch electrodes 2532 respectively has connecting portion 2532a and the 2532b of leap section.Connecting portion 2532a is positioned at pixel region Ap and is connected in main body 151, and the 2532b of leap section is connected in connecting portion 2532a and extends to the top of data line 140d.Apart the first spacing d1 of connecting portion 2532a and each connecting portion 2532a have the first width w1.That is to say, the spacing that is positioned at 1531 of two the first adjacent branch electrodes of pixel region Ap is equal to the spacing of two adjacent connecting portion 2532a that are positioned at pixel region Ap.Apart the second spacing d2 of the 2532b of leap section and each 2532b of leap section have the second width w2.In the present embodiment, the second spacing d2 is less than the first spacing d1.That is to say, distance is less than the spacing of 1531 of two that are positioned at pixel region Ap the first adjacent branch electrodes and the spacing of two adjacent connecting portion 2532a between two adjacent 2532b of leap section of leap data line 140d.
If for example be 7 microns (μ m) with the first width w1 of connecting portion 2532a and the summation of the first spacing d1, the first spacing d1 that then is positioned at pixel region Ap is 3.5 microns (μ m).In addition, under the prerequisite of the penetrance of the process capability of considering board and pixel, take the summation of the second width w2 of the 2532b of leap section and the second spacing d2 for example be 7 microns (μ m) as example, the second spacing d2 is less than 2.7 microns (μ m) and surpass 0 micron (μ m).Thus, the liquid crystal panel 200 of the present embodiment can have advantages of the liquid crystal panel 100 that is similar to the first embodiment, promotes the quality of display frame with the situation that reduces light leak.In addition, because second branch electrodes 2532 of the present embodiment is not wide structure, the 2532b of leap section that namely only crosses over the top of data line 140d increases width and reduces accordingly spacing.Therefore, all be covered with the branch electrodes that increases width and the situation of reducing accordingly spacing compared to all pixel regions, the liquid crystal panel 200 of the present embodiment can reduce effectively because of the not enough situation of light uneven (mura) that may cause of process capability of board.In addition, the large I of the second spacing d2 adjusts such as the thickness according to material layer 160 as described in the first embodiment, and allows the light leak amount within the acceptable range.
Moreover, really do not cross over the situation of the top of data line 140d in order to reduce because the bit errors on the processing procedure causes the 2532b of leap section, the relative dual-side s11 of the 2532b of leap section of the present embodiment and s12 lay respectively at outside the relative dual-side s21 and s22 of data line 140d, and are parallel in fact dual-side s21 and the s22 of data line 140d.Wherein, the side s11 of the 2532b of leap section is positioned at pixel region Ap, and with the side s21 that is adjacent to pixel region Ap of data line 140d be separated by 2 microns (μ m).Thus, even when the 2532b of leap section turned left skew because of the bit errors on the processing procedure, the spacing between the side s11 of the 2532b of leap section and the side s21 of data line 140d can allow the 2532b of leap section still can cross on data line 140d.
In general, turning to along the edge of pixel electrode 250 of the liquid crystal molecule in the liquid crystal layer 130 toppled over.If transfer when excessive in the edge of pixel electrode 250, turning to of liquid crystal molecule can be not too smooth-going.For instance, connecting portion 2532a can form the large edge of turnover with the intersection that is connected of the 2532bs of leap section at connecting portion 2532a with the stand out of the 2532b of leap section.In order to reduce the not too smooth-going possibility that turns to of aforesaid liquid crystal molecule, each pixel electrode 250 of the present embodiment has more buffer part 2532c, and buffer part 2532c is connected between the 2532b of leap section and the connecting portion 2532a.The angle of the side s4 of buffer part 2532c and the side s3 of connecting portion 2532a for example is the excessively situation of turnover of 150～170 degree and the edge that can reduce pixel electrode 250.That is to say, buffer part 2532c is the intersection that is positioned at the 2532b of leap section and connecting portion 2532a.Thus, turning to of the liquid crystal molecule of liquid crystal layer 130 can be more smooth-going.
The 3rd embodiment
Please refer to Fig. 4, it illustrates the top view according to the liquid crystal panel of the part of third embodiment of the invention.Compared to the first embodiment, the configuration of pixel electrode 350 is slightly different.Main body 151 is positioned at pixel region Ap, and the first branch electrodes 1531 autonomous agents 151 extend in pixel region Ap.Yet the second branch electrodes 3532 autonomous agents 151 of the present embodiment stretch out and cross over the top of sweep trace 140s.Other not repeat specifications of similar structure.
Thus, the liquid crystal panel of the present embodiment can reach the effect of the liquid crystal panel that is similar to the first embodiment, and produces the situation of light leak so that the liquid crystal molecule of the top of sweep trace 140s will not be vulnerable to electric field influence, to improve display quality.In addition, the penetrance of pixel still can be kept.
The 4th embodiment
Please refer to Fig. 5, it illustrates the top view according to the liquid crystal panel of the part of fourth embodiment of the invention.Compared to the second embodiment, the configuration of pixel electrode 450 is slightly different.Main body 151 is positioned at pixel region Ap, and the first branch electrodes 1531 autonomous agents 151 extend in pixel region Ap.The second branch electrodes 4532 respectively has connecting portion 4532a and the 4532b of leap section.Connecting portion 4532a is positioned at pixel region Ap and is connected in main body 151, and the 4532b of leap section is connected in connecting portion 4532a and extends to the top of sweep trace 140s.Other not repeat specifications of similar structure.
Thus, the liquid crystal panel of the present embodiment can have advantages of the liquid crystal panel 200 that is similar to the second embodiment, promotes the quality of display frame with the situation that reduces light leak.In addition, because second branch electrodes 4532 of the present embodiment is not wide structure, the 4532b of leap section that namely only crosses over the top of sweep trace 140s increases width and reduces accordingly spacing.Therefore, all be covered with the branch electrodes that increases width and the situation of reducing accordingly spacing compared to all pixel regions, the liquid crystal panel of the present embodiment can reduce effectively because of the not enough situation of light uneven (mura) that may cause of process capability of board.
Moreover, really do not cross over the situation of the top of sweep trace 140s in order to reduce because the bit errors on the processing procedure causes the 4532b of leap section, the 4532b of leap section of the present embodiment and the configuration relation of sweep trace 140s can be similar to the 2532b of leap section of the second embodiment and the configuration relation of data line 140d, to allow the 4532b of leap section can really cross over the top of sweep trace 140s.
In addition, can fill up and modify by the configuration of buffer part between the 4532b of leap section and the connecting portion 4532a, to allow the turning to of liquid crystal molecule of liquid crystal layer can be more smooth-going.
Liquid crystal panel according to the above embodiment of the present invention, it is by the spacing design of crossing over the second adjacent branch electrodes on data line or the sweep trace, quality and the market competitiveness when promoting demonstration with the minimizing light leak.In an embodiment, second branch electrodes of crossing on data line or the sweep trace is the pitch dimension shrinkage that makes the second adjacent branch electrodes in the mode that integral width strengthens, to reduce the situation of light leak.In another embodiment, second branch electrodes of crossing on data line or the sweep trace is to strengthen partly width, so that the pitch dimension shrinkage of the second adjacent branch electrodes.Thus, the situation of light leak can be improved when not only showing, and the situation that the finished product of display panel is subject to the process capability impact of board also can reduce.In addition, buffer part is to be configured between leap section and the connecting portion, with allow liquid crystal layer liquid crystal molecule turn to more smooth-going.
Although the present invention discloses as above with preferred embodiment; so it is not to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (20)
1. liquid crystal panel comprises:
One first substrate and a second substrate, configuration with corresponding to each other;
One liquid crystal layer is disposed between this first substrate and this second substrate;
Several data lines and several sweep traces are disposed on this first substrate, described several data lines appoint adjacent the two the two is interlaced with described several sweep traces times adjacent, to form a pixel region; And
Several pixel electrodes, respectively this pixel electrode comprises a main body, several first branch electrodes and several the second branch electrodes, this main body is positioned at this pixel region, described several first branch electrodes are extended in this pixel region from this main body, described several second branch electrodes stretch out from this main body and cross over the top of described several data lines, described several first branch electrodes respectively have one first spacing, described several second branch electrodes respectively have one second spacing, and this second spacing is less than this first spacing.
2. liquid crystal panel as claimed in claim 1 is characterized in that, this first branch electrodes is wide structure, and this second branch electrodes is wide structure.
3. liquid crystal panel as claimed in claim 1, it is characterized in that, described several second branch electrodes respectively have a junction and a leap section, this connecting portion is in this pixel region and be connected in this main body, this leap section is connected in this connecting portion and extends to the top of described several data lines, apart this first spacing of described connecting portion and respectively this connecting portion have this first width, described apart this second spacing of leap section and respectively should leap section have this second width.
4. liquid crystal panel as claimed in claim 3 is characterized in that, the relative dual side-edge of this leap section lays respectively at outside the relative dual side-edge of data line, and is parallel in fact this dual side-edge of this data line.
5. liquid crystal panel as claimed in claim 4 is characterized in that, the wherein one of this dual side-edge of this leap section is positioned at this pixel region, and is separated by 2 microns with this side that is adjacent to this pixel region of this data line.
6. liquid crystal panel as claimed in claim 4 is characterized in that, respectively this pixel electrode has more a buffer part, is connected between this leap section and this connecting portion.
7. liquid crystal panel as claimed in claim 6 is characterized in that, the angle of the side of this buffer part and the side of this connecting portion is 150～170 degree.
8. liquid crystal panel as claimed in claim 1 more comprises:
One material layer covers described several sweep traces and described several data lines, and described several pixel electrodes are disposed on this material layer, and the thickness of this material layer is 2 microns, and this second spacing is less than 4.5 microns.
9. liquid crystal panel as claimed in claim 1 more comprises:
One material layer covers described several sweep traces and described several data lines, and described several pixel electrodes are disposed on this material layer, and the thickness of this material layer is 2.5 microns, and this second spacing is less than 5.5 microns.
10. liquid crystal panel as claimed in claim 1 more comprises:
One material layer covers described several sweep traces and described several data lines, and described several pixel electrodes are disposed on this material layer, and the thickness of this material layer is 3 microns, and this second spacing is less than 6 microns.
11. a liquid crystal panel comprises:
One first substrate and a second substrate, configuration with corresponding to each other;
One liquid crystal layer is disposed between this first substrate and this second substrate;
Several data lines and several sweep traces are disposed on this first substrate, described several data lines appoint adjacent the two the two is interlaced with described several sweep traces times adjacent, to form a pixel region; And
Several pixel electrodes, respectively this pixel electrode comprises a main body, several first branch electrodes and several the second branch electrodes, this main body is positioned at this pixel region, described several first branch electrodes are extended in this pixel region from this main body, described several second branch electrodes stretch out from this main body and cross over the top of described several sweep traces, described several first branch electrodes respectively have one first spacing, described several second branch electrodes respectively have one second spacing, and this second spacing is less than this first spacing.
12. liquid crystal panel as claimed in claim 11 is characterized in that, this first branch electrodes is wide structure, and this second branch electrodes is wide structure.
13. liquid crystal panel as claimed in claim 11, it is characterized in that, described several second branch electrodes respectively have a junction and a leap section, this connecting portion is in this pixel region and be connected in this main body, this leap section is connected in this connecting portion and extends to the top of described several sweep traces, apart this first spacing of described connecting portion and respectively this connecting portion have this first width, described apart this second spacing of leap section and respectively should leap section have this second width.
14. liquid crystal panel as claimed in claim 13 is characterized in that, the relative dual side-edge of this leap section lays respectively at outside the relative dual side-edge of sweep trace, and is parallel in fact this dual side-edge of this sweep trace.
15. liquid crystal panel as claimed in claim 14 is characterized in that, the wherein one of this dual side-edge of this leap section is positioned at this pixel region, and is separated by 2 microns with this side that is adjacent to this pixel region of this sweep trace.
16. liquid crystal panel as claimed in claim 14 is characterized in that, respectively this pixel electrode has more a buffer part, is connected between this leap section and this connecting portion.
17. liquid crystal panel as claimed in claim 16 is characterized in that, the angle of the side of this buffer part and the side of this connecting portion is 150～170 degree.
18. liquid crystal panel as claimed in claim 11 more comprises:
One material layer covers described several sweep traces and described several data lines, and described several pixel electrodes are disposed on this material layer, and the thickness of this material layer is 2 microns, and this second spacing is less than 4.5 microns.
19. liquid crystal panel as claimed in claim 11 more comprises:
One material layer covers described several sweep traces and described several data lines, and described several pixel electrodes are disposed on this material layer, and the thickness of this material layer is 2.5 microns, and this second spacing is less than 5.5 microns.
20. liquid crystal panel as claimed in claim 11 more comprises:
One material layer covers described several sweep traces and described several data lines, and described several pixel electrodes are disposed on this material layer, and the thickness of this material layer is 3 microns, and this second spacing is less than 6 microns.
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