CN101251696A - Initiative element array base plate and liquid crystal display panel - Google Patents
Initiative element array base plate and liquid crystal display panel Download PDFInfo
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- CN101251696A CN101251696A CNA2008100818236A CN200810081823A CN101251696A CN 101251696 A CN101251696 A CN 101251696A CN A2008100818236 A CNA2008100818236 A CN A2008100818236A CN 200810081823 A CN200810081823 A CN 200810081823A CN 101251696 A CN101251696 A CN 101251696A
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Abstract
The invention provides an active element array substrate and a liquid crystal display panel. The active element array substrate comprises a plurality of scanning beams, a plurality of data wires, a plurality of storage capacitance wires and a plurality of pixel units, wherein, each pixel unit comprises an active element, a pixel electrode and a field effect light shield electrode; active elements are electrically connected with corresponding scanning beams and corresponding data wires; the pixel electrodes are arranged above the storage capacitance wires and branches of partial storage capacitance wires and electrically connected with corresponding active elements; field effect light shield electrodes are positioned above branches of the storage capacitance wires and adjacent data wires and arranged on both sides of the pixel electrodes in the direction which is parallel to the data wires; moreover, the field effect light shield electrodes are electrically connected with the storage capacitance wires, and then the pressure of the storage capacitance wires is different from the common voltage of a colored filter.
Description
Technical field
The invention relates to a kind of substrate and display device, and particularly relevant for a kind of active component array base board and display panels.
Background technology
At many flat-panel screens (Flat Panel Display, FPD) in, (LiquidCrystal Display LCD) because of having advantageous characteristic such as high spatial utilization ratio, low consumpting power, radiationless and low electromagnetic interference (EMI), therefore becomes the main flow of existing market to LCD.
Fig. 1 illustrates the partial cutaway schematic into a kind of LCD of prior art.Please refer to Fig. 1, the backlight module 150 that LCD 100 comprises display panels 140, polaroid 160,170 and the required light source of display panels 140 is provided, wherein display panels 140 comprises initiatively multiple substrate 110, subtend substrate 120 and is folded in liquid crystal layer 130 between two substrates 110,120.Subtend substrate 120 is generally colored filter substrate.Wherein, have a plurality of pixel electrodes 112 and many signal wires 114 between pixel electrode 112 on the active component array base board 110, subtend substrate 120 has a common electrode 122 and a plurality of black matrix" BM (Black Matrix is called for short BM, and only illustrating a black matrix" among Fig. 1 is example) that is positioned at the signal wire top.As shown in Figure 1, liquid crystal molecule in the liquid crystal layer 130 is by the work of the voltage difference between pixel electrode 112 and the common electrode 122 polaroid 160,170 that reverses and arrange in pairs or groups in various degree, the penetrance that the light that is provided in order to control backlight module 150 passes through display panels 140 makes LCD 100 do the demonstration of different GTGs.On the other hand because the liquid crystal molecule of signal wire 114 tops can produce the phenomenon of light leak, so black matrix" BM usually and signal wire 114 be arranged at accordingly on the subtend substrate 120, in order to cover light by non-display area, signal wire 114 tops for example.
In detail, please continue with reference to Fig. 1, backlight module 150 provides are to the light LS of display panels 140
1And light LS
2, the light LS to non-display area wherein is provided
1Can by signal wire 114 or black matrix" BM covers.In addition, provide light LS to non-display area
2Then may penetrate liquid crystal layer 130 and subtend substrate 120, produce the phenomenon of side direction light leak from signal wire 114 sides.Particularly, when active multiple substrate 110 and the upright precision of the group of subtend substrate 120 are not good, as the light LS that is illustrated among Fig. 1
2Easier under the situation of black matrix" BM offset, produce the phenomenon of serious side direction light leak.
For avoiding LCD 100 when showing, to produce the phenomenon of above-mentioned side direction light leak, can improve the problem of side direction light leak usually by the width w ' that widens black matrix" BM.Yet the width w ' that widens black matrix" BM can make the pixel aperture ratio of display panels 140 (Aperture Ratio) descend, and then influences the brightness performance of LCD 100.Therefore, how prevent under the demand of aperture opening ratio that the side direction light leak from being a big problem of present display panels taking into account.
Summary of the invention
The invention provides a kind of active component array base board, the phenomenon that the shading electrode can improve the side direction light leak is imitated in the field in its pixel cell.
The present invention provides a kind of display panels in addition, and it can effectively improve the phenomenon and increase pixel aperture ratio of side direction light leak.
The present invention proposes a kind of active component array base board, and this active component array base board comprises multi-strip scanning line, many data lines, many capacitor storage beam and a plurality of pixel cell.And pixel cell comprises driving component, pixel electrode and an effect shading electrode.Wherein, data line cardinal principle and sweep trace homeotropic alignment.Driving component and corresponding scanning line and data line electrically connect.Pixel electrode places part capacitor storage beam top and electrically connects with corresponding active components.Imitate the top that the shading electrode is positioned at capacitor storage beam and adjacent data line, and panel data line and be disposed at the both sides of pixel electrode, and electrically connect with capacitor storage beam.
The present invention proposes a kind of display panels in addition, and this display panels comprises active component array base board, subtend substrate and liquid crystal layer.Active component array base board comprises multi-strip scanning line, many data lines, many capacitor storage beam and a plurality of pixel cell.Each pixel cell comprises driving component, pixel electrode and an effect shading electrode.Wherein, driving component and corresponding scanning line and data line electrically connect, and pixel electrode is disposed at part capacitor storage beam top and electrically connect with corresponding active components.Imitating the shading electrode is positioned at the top of capacitor storage beam and adjacent data line, and is parallel to data line and is disposed at the both sides of pixel electrode, and is electrically connected with capacitor storage beam.In addition, data line cardinal principle and sweep trace homeotropic alignment.The subtend substrate is disposed at the active component array base board top, and this subtend substrate has common electrode.Liquid crystal layer is disposed between active component array base board and the subtend substrate, and it is to present dark state according to a common electrode and a voltage difference of imitating between the shading electrode that the pairing liquid crystal layer of shading electrode is imitated in its midfield.
In one embodiment of this invention, capacitor storage beam has a plurality of branches that are parallel to data line, and the edge of the edge of an effect shading electrode and branch and adjacent data line overlaps.In one embodiment, pixel electrode exposes the branch of part capacitor storage beam.
In one embodiment of this invention, the material of an effect shading electrode is a transparent conductive material.
In one embodiment of this invention, an effect shading electrode and pixel electrode belong to the same material layer.
In one embodiment of this invention, an effect shading electrode and pixel electrode are electrically insulated.
In one embodiment of this invention, pixel cell comprises that also one is positioned at the online contact hole of storage capacitors, and an effect shading electrode electrically connects by contact hole and capacitor storage beam.
In one embodiment of this invention, each is imitated the shading electrode and comprises two son field effect shading electrodes, and each sub edge overlapping of imitating the edge and the adjacent data line of shading electrode and each branch.In one embodiment, the width of each son effect shading electrode is greater than the bee-line between each branch and the adjacent data line.In another embodiment, the effect shading electrode of the son between the two adjacent pixel electrodes joins each other.
In one embodiment of this invention, active component array base board also comprises voltage source altogether, and this common-battery potential source and capacitor storage beam electrically connect.In one embodiment, the common-battery potential source is suitable for providing a direct current voltage.In one embodiment, DC voltage can be the voltage of closing of sweep trace.
In one embodiment of this invention, the composition of liquid crystal layer for example is the twist mode liquid crystal.In one embodiment, a liquid crystal layer that effect shading electrode pair is answered can have the maximum anglec of rotation.
In one embodiment of this invention, the voltage difference between common electrode and each the effect shading electrode is more than or equal to the voltage difference between common electrode and each pixel electrode.In another embodiment, the voltage difference between common electrode and each the effect shading electrode for example is 8 volts to 10 volts.
In the pixel cell of active component array base board of the present invention, because of the structure of a configuration effect shading electrode, this structure can replace black matrix" to cover the light that backlight module provides, and then improves the phenomenon of side direction light leak.In addition, display panels of the present invention is imitated the structure of shading electrode because of stope, can effectively improve the side direction light leakage phenomena, in one embodiment, but the making of omitted data line top black matrix", promote the upright process rate of group of active component array base board and subtend substrate simultaneously, the brightness that improves display panels.
Description of drawings
Fig. 1 illustrates the partial cutaway schematic into a kind of LCD of prior art.
Fig. 2 A illustrates the local top view into a kind of active component array base board of one embodiment of the invention.
Fig. 2 B is the part sectioned view that the active component array base board among Fig. 2 A is applied to display panels.
Fig. 2 C illustrates the diagrammatic cross-section into a kind of display panels of another embodiment of the present invention.
Drawing reference numeral:
100: the prior art LCD
110: prior art is multiple substrate initiatively
112: the prior art pixel electrode
114: the prior art signal wire
120: prior art subtend substrate
122: the prior art common electrode
130: the prior art liquid crystal layer
140: the prior art display panels
150: the prior art backlight module
160,170: the prior art polaroid
BM: prior art black matrix"
LS
1, LS
2: light
W ': the width of prior art black matrix"
200: display panels
210: active component array base board
212: sweep trace
214: data line
216: capacitor storage beam
216a: the branch of capacitor storage beam
218: pixel cell
218a: pixel electrode
218b: an effect shading electrode
218b
1, 218b
2: a son effect shading electrode
218c: contact hole
218d: driving component
220: the subtend substrate
222: common electrode
230: liquid crystal layer
260,270: polaroid
D: gap
E
Black: high electric field
L: distance
LS: light
V
COM: the common-battery potential source
V
COM': common voltage source
w
1, w
2: the width of a son effect shading electrode
Δ V
Black: voltage difference
Embodiment
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Fig. 2 A illustrates the local top view into a kind of active component array base board of one embodiment of the invention, Fig. 2 B is the part sectioned view that the active component array base board among Fig. 2 A is applied to display panels, and wherein Fig. 2 B is the part section of the correspondence position of xx ' profile line in Fig. 2 A.Please be simultaneously with reference to Fig. 2 A and Fig. 2 B, the display panels 200 of present embodiment comprises active component array base board 210, subtend substrate 220, polaroid 260,270 and liquid crystal layer 230.Wherein, subtend substrate 220 has a common electrode 222, and is positioned at the top of active component array base board 210.In addition, liquid crystal layer 230 is disposed between active component array base board 210 and the subtend substrate 220.Polaroid 260,270 is attached at the outside surface of subtend substrate 220 and active component array base board 210 respectively.
Please continue with reference to Fig. 2 A and Fig. 2 B, active component array base board 210 mainly is made up of multi-strip scanning line 212, many data lines 214, many capacitor storage beam 216 and a plurality of pixel cell 218 (only illustrate among Fig. 2 A and be example), wherein, data line 214 cardinal principles and sweep trace 212 homeotropic alignments.Shown in Fig. 2 A, each pixel cell 218 comprises driving component 218d, pixel electrode 218a and an effect shading electrode 218b, wherein driving component 218d and corresponding scanning line 212 and data line 214 electrically connects, and pixel electrode 218a is disposed at the 216a of the branch top of part capacitor storage beam 216 and capacitor storage beam and electrically connect with corresponding active components 218d.The 216a of branch of capacitor storage beam 216 and capacitor storage beam is for being connected with each other.
Shown in Fig. 2 A and Fig. 2 B, an effect shading electrode 218b is positioned at the top of capacitor storage beam 216 and adjacent data line 214, and is the both sides that are disposed at pixel electrode 218a with the direction of panel data line 214.And an effect shading electrode 218b and pixel electrode 218a are electrically insulated each other.What deserves to be mentioned is that the making of an effect shading electrode 218b can utilize and finish with the light shield processing procedure when making pixel electrode 218a.In other words, an effect shading electrode 218b and pixel electrode 218a belong to the identical materials layer, but the present invention is not as limit.In addition, in the present embodiment, the material that shading electrode 218b is imitated in the field for example is transparent conductive material, anticipates promptly, and an effect shading electrode 218b itself is transparent, but utilizes the feasible corresponding liquid crystal deflecting element of field effect, and then reaches the effect of shading.
In detail, shown in Fig. 2 B, an effect shading electrode 218b can electrically connect by a contact hole 218c and a capacitor storage beam 216 that is positioned on the capacitor storage beam 216.More particularly, common-battery potential source VCOM provides a direct current voltage to capacitor storage beam 216, make and constitute storage capacitors between capacitor storage beam 216, pixel electrode 218a or other conductive layers, to promote display quality, wherein the common-battery potential source VCOM of capacitor storage beam 216 is DC voltage, and is different with the common voltage source VCOM ' of subtend substrate 220.DC voltage the present invention of this capacitor storage beam 216 does not limit and puts on a magnitude of voltage of imitating shading electrode 218b.For instance, described of common electrode 222 and each are imitated voltage difference between the shading electrode 218b more than or equal to this common electrode 222 and the voltage difference between this pixel electrode 218a respectively, and wherein this common electrode 222 is essentially 8 volts to 10 volts with voltage difference between each described field effect shading electrode 218b.
On the practice, display panels 200 with the collocation of backlight module (not illustrating) under, just can be applicable on the LCD, wherein backlight module can provide display panels 200 required light source.Shown in Fig. 2 B, between a common electrode 222 and an effect shading electrode 218b, provide with voltage difference delta V, make that the liquid crystal molecule of imitating in the pairing liquid crystal layer 230 of shading electrode 218b just can be according to voltage difference delta V and deflection, utilize the degree of deflection of liquid crystal molecule to change light LS that backlight module provides penetration, and then reach the effect of shading display panels 200.For example, consist of twist mode liquid crystal (Twisted Nematic Liquid Crystal with liquid crystal layer 230, TN LC) is example, voltage difference delta Vblack can form a high electric field Eblack between a common electrode 222 and an effect shading electrode 218b, the liquid crystal molecule of liquid crystal layer 230 can present the arrangement mode of the maximum anglec of rotation in response to this high electric field Eblack, makes display panels 200 present dark state.
Hold above-mentioned, shown in Fig. 2 B, the light LS that backlight module provided is from active component array baseplate 210 below incident display panels 200, and an order voltage difference of imitating between shading electrode 218b and the common electrode 222 is Δ Vblack, make light LS to imitate the liquid crystal layer 230 of shading electrode 218b top by penetration field, and present dark state.What deserves to be mentioned is, being familiar with this operator can be according to the liquid crystal kind, paste the optical axis direction of polaroid 260,270 outward or voltage difference that other design requirements come marshalling yard to imitate between shading electrode 218b and the common electrode 222 is Δ V, make that imitating the pairing liquid crystal layer 230 of shading electrode 218b presents dark state according to voltage difference delta V, so the present invention does not limit and puts on the voltage of imitating on the shading electrode 218b, liquid crystal kind etc.
In addition, shown in Fig. 2 A and Fig. 2 B, capacitor storage beam 216 has a plurality of 216a of branch that are parallel to data line 214, and pixel electrode 218a exposes the 216a of branch of part capacitor storage beam 216.In the present embodiment, imitate a shading electrode 218b to be arranged at 216a of part branch and part adjacent data line 214 tops, and itself and the edge overlapping of edge and the adjacent data line 214 of the 216a of branch.In detail, imitating two sons that shading electrode 218b for example is respectively w1 and w2 by width imitates shading electrode 218b1,218b2 and is formed, and each 216a of branch of capacitor storage beam 216 and the bee-line between the adjacent data line 214 for example are L, as width w1 or width w2 during, can make and imitate a shading electrode 218b and have preferable shaded effect greater than bee-line L.
Certainly, the deviser still can be according to gap d (Cell Gap) size of active component array base board 210 with subtend substrate 220, moderately adjust width w1 or the w2 of a son effect shading electrode 218b1 or 218b2, further promote a shaded effect of imitating shading electrode 218b.
Fig. 2 C illustrates the diagrammatic cross-section into a kind of display panels of another embodiment of the present invention.Please refer to Fig. 2 C, son between the two adjacent pixel electrode 218a effect shading electrode 218b1, a 218b2 can further be connected into a continuous field each other mutually and imitate shading electrode 218b ', make a pairing liquid crystal layer 230 of effect shading electrode 218b ' to present dark state according to voltage difference delta Vblack.In this embodiment, the liquid crystal molecule that is positioned at data line 214 tops can present dark state by the voltage difference delta Vblack that controlling filed is imitated between shading electrode 218b ' and the common electrode 222, cover the light LS that backlight module provides and need not additionally to be provided with black matrix", therefore compared to prior art, the present invention can reduce the cost of manufacture of display panels, and increase by 200 groups of processing procedure margins (ProcessMargin) immediately of display panels, improve yield.
In sum, of the present invention imitates the shading electrode is a kind of transparent conductive material, differs widely with the shading mode of adopting lighttight black matrix" in the past.Imitate the shading electrode by and common electrode between its pairing liquid crystal layer of voltage the official post light and the side direction light that can effectively cover backlight module and provided.Owing to because of no black matrix", also can promote active component array base board and subtend substrate and organize immediately process rate on the subtend substrate of data line.In addition, have a display panels of imitating the shading electrode and have high aperture opening ratio and penetrance, and then the brightness of display panels is promoted.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (11)
1. an active component array base board is characterized in that, this active component array base board comprises:
The multi-strip scanning line;
Many data lines are substantially with described sweep trace homeotropic alignment;
Many capacitor storage beam; And
A plurality of pixel cells, wherein each pixel cell comprises:
One driving component electrically connects with corresponding scanning line and data line;
One pixel electrode electrically connects with corresponding active components, and this pixel electrode is disposed at described each the capacitor storage beam top of part; And
Imitate the shading electrode for one, be parallel to described data line and be disposed at the both sides of described pixel electrode, this imitates the top that the shading electrode is positioned at described capacitor storage beam and adjacent data line, and this imitates the shading electrode and described each capacitor storage beam electrically connects.
2. active component array base board as claimed in claim 1, it is characterized in that, described each capacitor storage beam has a plurality of branches that are parallel to described data line, the edge of described each effect shading electrode and described branch and the edge of adjacent data line overlap, and wherein said pixel electrode exposes the branch of the described capacitor storage beam of part.
3. active component array base board as claimed in claim 1 is characterized in that, described effect shading electrode and described pixel electrode belong to the same material layer.
4. active component array base board as claimed in claim 1 is characterized in that, described effect shading electrode and described pixel electrode are electrically insulated.
5. active component array base board as claimed in claim 1, it is characterized in that, described each pixel cell comprises that also one is positioned at the online contact hole of described each storage capacitors, imitates the shading electrode for described and electrically connects by described contact hole and described capacitor storage beam.
6. active component array base board as claimed in claim 1, it is characterized in that, described each effect shading electrode comprises two a sons effect shading electrode, the edge of the branch of described each son effect shading electrode and described each capacitor storage beam and the edge of adjacent data line overlap, and imitate the width of shading electrode greater than the bee-line between described each branch and the adjacent described data line for wherein said each sub.
7. active component array base board as claimed in claim 1, it is characterized in that, described each effect shading electrode comprises two a sons effect shading electrode, the edge of the branch of described each son field effect shading electrode and described each capacitor storage beam and the edge of adjacent data line overlap, and wherein the effect shading electrode of the described son between the two adjacent pixel electrodes joins each other.
8. active component array base board as claimed in claim 1 is characterized in that, described active component array base board also comprises voltage source altogether, electrically connects with described capacitor storage beam, and wherein said common-battery potential source is suitable for providing a direct current voltage.
9. active component array base board as claimed in claim 8 is characterized in that, described DC voltage is the voltage of closing of described sweep trace.
10. a display panels is characterized in that, this display panels comprises:
One active component array base board comprises:
The multi-strip scanning line;
Many data lines are substantially with described sweep trace homeotropic alignment;
Many capacitor storage beam;
A plurality of pixel cells, wherein said each pixel cell comprises:
One driving component electrically connects with corresponding scanning line and data line;
One pixel electrode electrically connects with corresponding active components, and this pixel electrode is disposed at described each the capacitor storage beam top of part; And
Imitate the shading electrode for one, be parallel to described data line and be disposed at the both sides of described pixel electrode, imitate the top that the shading electrode is positioned at described capacitor storage beam and adjacent data line for described, this imitates shading electrode and the electric connection of this capacitor storage beam;
One subtend substrate is disposed at described active component array base board top, and wherein this subtend substrate has a common electrode; And
One liquid crystal layer, be disposed between described active component array base board and the described subtend substrate, wherein said imitates the pairing liquid crystal layer of shading electrode is to present dark state according to described common electrode and described voltage difference of imitating between the shading electrode.
11. display panels as claimed in claim 10, it is characterized in that, voltage difference between described common electrode and each described effect shading electrode is more than or equal to the voltage difference between described common electrode and described each pixel electrode, and wherein said common electrode and each described voltage difference of imitating between the shading electrode are essentially 8 volts to 10 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100818236A CN101251696B (en) | 2008-04-08 | 2008-04-08 | Initiative element array base plate and liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100818236A CN101251696B (en) | 2008-04-08 | 2008-04-08 | Initiative element array base plate and liquid crystal display panel |
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| Publication Number | Publication Date |
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| CN101251696A true CN101251696A (en) | 2008-08-27 |
| CN101251696B CN101251696B (en) | 2011-01-26 |
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| CN2008100818236A Expired - Fee Related CN101251696B (en) | 2008-04-08 | 2008-04-08 | Initiative element array base plate and liquid crystal display panel |
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