CN104166281A - Liquid crystal display panel and manufacturing method thereof - Google Patents
Liquid crystal display panel and manufacturing method thereof Download PDFInfo
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- CN104166281A CN104166281A CN201410398365.4A CN201410398365A CN104166281A CN 104166281 A CN104166281 A CN 104166281A CN 201410398365 A CN201410398365 A CN 201410398365A CN 104166281 A CN104166281 A CN 104166281A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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Abstract
The invention discloses a liquid crystal display panel and a manufacturing method thereof. The liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate. The side, adjacent to the liquid crystal layer, of the first substrate is provided with a first electrode. The side, adjacent to the liquid crystal layer, of the second substrate is provided with a second electrode. The second substrate comprises a light-proof area which is located in the perpendicular protection area of the first electrode. The second electrode or the first electrode is provided with a protruding structure which is located in the perpendicular projection area of the light-proof area. The surface of the protruding structure is coated with an alignment layer so that liquid crystal molecules in the liquid crystal layer between the first electrode and the second electrode can have a pretilt angle. In this way, the penetration rate can be increased, the number of photo-masks can be decreased, and cost can be reduced.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of display panels and manufacture method thereof.
Background technology
Display panels is widely used in various electronic display units, if mobile phone, personal digital assistant (PDA), digital camera, computing machine and notebook computer etc. are nearly all to use the display screen with high-resolution color.LCDs generally includes TN (Twist Nematic) display panel, VA (Vertical Alignment) and shows display panel, MVA (Multi-domain Vertical Alignment) display panel and IPS (In-plane switching) display panel etc., and VA display panel becomes large scale liquid crystal display with advantages such as its high aperture, high resolving power, wide viewing angles and generally adopts.
Yet traditional VA display panel is not widely used in small-size liquid crystal displays.As shown in Figure 1, in the dot structure of traditional VA display panel, the pixel electrode 101 of Array (array base palte) side is typically designed to herring-bone form, and be divided into a plurality of regions and improve viewing angle characteristic, the public electrode 102 of CF (colored optical filtering substrates) side is the strip like transparent electrode of a monoblock.In the initial orientation of liquid crystal, utilize 101 pairs of liquid crystal of pixel electrode of herring-bone form to carry out orientation, so that liquid crystal has the tilt angle of a plurality of different directions, thereby be improved viewing angle characteristic.Yet, while adopting the pixel electrode 101 of herring-bone form, when driving display panel to show, can cause occurring two concealed wires that intersect vertically 201,202 at the zone line of pixel electrode 101, as shown in Figure 2.When size of display panels is less, above-mentioned concealed wire 201,202 is more remarkable on the impact of penetrance, and therefore, the VA display panel of this kind of dot structure is not also suitable for high-res, undersized portable display device, easily causes penetrance to decline.
For solving the problems of the technologies described above, prior art adopts dot structure as shown in Figure 3 a and Figure 3 b shows conventionally in undersized VA display panel.In this kind of VA display panel, as described in Fig. 3 a, display panel comprises the liquid crystal layer 33 of Array substrate 31, CF substrate 32 and Array substrate 31 and CF substrate 32.One side of Array substrate 31 contiguous liquid crystal layers 33 is provided with pixel electrode 34, and a side of CF substrate 32 contiguous liquid crystal layers 33 is provided with public electrode 35.As shown in Figure 3 b, pixel electrode 34 does not have herring-bone form structure, for liquid crystal is carried out to orientation, a borehole structure 351 is set on the public electrode 35 of CF substrate 32, to utilize this borehole structure 351 to produce wedge-like electric field, thereby make liquid crystal there is the tilt angle of a plurality of different directions.In this kind of dot structure, the pixel electrode 34 of Array side is herring-bone form structure not, is only can produce concealed wire in the position of borehole structure 351, compares with traditional herring-bone form electrode, can avoid the penetrance that herring-bone form electrode causes to decline.Yet, therefore because CF side has increased borehole structure 351, in manufacture process, need to increase by electrode that one light shield remove borehole structure 351 places to obtain borehole structure 351, be unfavorable for cost.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of display panels and manufacture method thereof, can improve penetrance, reduces light shield number, reduces costs.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of display panels is provided, comprises first substrate, second substrate and the liquid crystal layer between described first substrate and described second substrate; One side of the contiguous described liquid crystal layer of described first substrate is provided with the first electrode, and a side of the contiguous described liquid crystal layer of described second substrate is provided with the second electrode; Described second substrate comprises light tight region, described light tight region is positioned at the vertical projection region of described the first electrode, on described the second electrode or described the first electrode, be provided with raised structures, described raised structures be positioned at the vertical projection region in light tight region, the surface-coated of described raised structures has alignment film, so that the liquid crystal molecule in the liquid crystal layer between described the first electrode and described the second electrode has tilt angle.
Wherein, described raised structures is regular shape, so that the liquid crystal layer between described the first electrode and described the second electrode has the different liquid crystal region of plural lqiuid crystal molecule tipping direction.
Wherein, described raised structures is circular cone, frustum, column or gengon, and the top of described raised structures with termination electrode inside surface is contacted or is not contacted.
Wherein, described do not have herring-bone form structure, projection and crack to termination electrode.
Wherein, described second substrate is colored optical filtering substrates, and described raised structures is arranged on described the second electrode, and described raised structures is for utilizing the material identical with black matrix" rete, color blocking rete or photoresistance separation material rete to make.
Wherein, described display panels also comprises the orthogonal upper polaroid of absorption axes and lower polaroid, described upper polaroid is arranged on a described second substrate side of described liquid crystal layer dorsad, described lower polaroid is arranged on a described first substrate side of described liquid crystal layer dorsad, and described upper polaroid and described lower polaroid are rotatory polarization sheet.
Wherein, be also provided with polymer monomer in described liquid crystal layer, described polymer monomer and described alignment film acting in conjunction are so that the liquid crystal molecule in the liquid crystal layer between described the first electrode and described the second electrode has tilt angle.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of manufacture method of display panels is provided, comprises: first substrate, second substrate and liquid crystal are provided, and wherein, described second substrate comprises light tight region; A side at described first substrate forms the first electrode, in a side of described second substrate, forms the second electrode; On described the first electrode or described the second electrode, form raised structures, and at the surface-coated alignment film of described raised structures; By described first substrate and described second substrate to box, and described the first electrode and described the second electrode are between described first substrate and described second substrate, make described light tight region be positioned at the vertical projection region of described the first electrode on described second substrate, and make described raised structures be positioned at the vertical projection region in described light tight region; Between described first substrate and described second substrate, injecting described liquid crystal to form liquid crystal layer between described first substrate and described second substrate, the liquid crystal molecule in the liquid crystal layer under the effect of described alignment film between described the first electrode and described the second electrode has tilt angle.
Wherein, the described step that forms raised structures on described the first electrode or the second electrode comprises: the raised structures of formation rule shape on described the first electrode or the second electrode, so that the liquid crystal layer between described the first electrode and described the second electrode has the different liquid crystal region of plural lqiuid crystal molecule tipping direction.
Wherein, described on described the first electrode or the second electrode the step of the raised structures of formation rule shape comprise: on described the first electrode or the second electrode, form the raised structures of circular cone, frustum, column or gengon, and the top that makes described raised structures with termination electrode inside surface is contacted or is not contacted.
The invention has the beneficial effects as follows: the situation that is different from prior art, display panels of the present invention, on the first electrode or the second electrode, be provided with raised structures, the surface-coated of this raised structures has alignment film, thereby make the liquid crystal molecule between the first electrode and the second electrode there is tilt angle, by raised structures, realize thus the orientation of liquid crystal, compare with existing technology of carrying out LCD alignment by borehole structure, not needing increases light shield number, is conducive to reduce costs.In addition, raised structures is arranged in the vertical projection region in light tight region, thereby can avoid raised structures to form concealed wire at transmission region, is therefore conducive to improve penetrance.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of a kind of dot structure of display panels in prior art;
Fig. 2 is the optical characteristics schematic diagram of the dot structure shown in Fig. 1 when showing;
Fig. 3 a is the structural representation of another kind of display panels in prior art;
Fig. 3 b is in the display panels shown in Fig. 3 a, the decomposing schematic representation of a dot structure;
Fig. 4 is the structural representation of display panels one embodiment of the present invention;
Fig. 5 is in an embodiment of display panels of the present invention, the decomposing schematic representation of the first electrode and the second electrode;
Fig. 6 is in an embodiment of display panels of the present invention, the initial orientation schematic diagram of the liquid crystal molecule in liquid crystal layer;
Fig. 7 is in an embodiment of display panels of the present invention, the optical characteristics schematic diagram of a dot structure;
Fig. 8 is the structural representation of another embodiment of display panels of the present invention;
Fig. 9 is in the another embodiment of display panels of the present invention, sneaks into and make after polymer monomer liquid crystal molecule form the schematic diagram of the auxiliary process of alignment of tilt angle in liquid crystal layer, and the part-structure of display panels is wherein only shown in figure;
Figure 10 is the process flow diagram of manufacture method one embodiment of display panels of the present invention;
Figure 11 is in manufacture method one embodiment of display panels of the present invention, the process flow diagram inject liquid crystal between first substrate and second substrate after.
Embodiment
Below in conjunction with drawings and embodiments, the present invention is described in detail.
Consult Fig. 4, in an embodiment of display panels of the present invention, display panels comprises first substrate 41, second substrate 43 and the liquid crystal layer 45 between first substrate 41 and second substrate 43.One side of the contiguous liquid crystal layers 45 of first substrate 41 is provided with the first electrode 42, and a side of second substrate 43 contiguous liquid crystal layers 45 is provided with the second electrode 44, by the first electrode 42 and the second electrode 44 are applied to voltage, can drive display panels to show.
In present embodiment, first substrate 41 is array base palte, is provided with the driven unit for driving display panels to show, devices such as thin film transistor (TFT), sweep trace, data line on first substrate 41.Second substrate 43 is colored optical filtering substrates, is provided with the devices such as colorama resistance layer, to realize the demonstration of various colors on second substrate 43.The first electrode 42 being arranged on first substrate 41 is pixel electrode, and the second electrode 44 being arranged on second substrate 43 is public electrode, is all to use transparency electrode to form.Wherein, the quantity of the first electrode 42 has a plurality of, is matrix and arranges, first electrode 42 and the second electrode 44 corresponding thereto and a dot structure of the 45 common definition of the liquid crystal layer between first electrode 42 and the second electrode 44 corresponding thereto.
Wherein, second substrate 43 comprises light tight region 431, and this light tight region is the region at black matrix (BM) place.As shown in Figure 5, the light tight region 431 of second substrate 43 is positioned at the vertical projection region of the first electrode 42 on second substrate 43, part driven unit as sweep trace 51 is arranged in light tight region 431 in the vertical projection region of first substrate 41.In the present embodiment, black matrix on colored optical filtering substrates is to be arranged in second substrate 43 position corresponding with pixel electrode, and be not with two pixel electrodes between corresponding position, be arranged on driven unit on first substrate 41 as sweep trace, thin film transistor (TFT) be the region that is positioned at pixel electrode place, and be not arranged between two pixel electrodes, and sweep trace and thin film transistor (TFT) are to be arranged in black matrix in the vertical projection region of first substrate 41.
Wherein, on the second electrode 44, be provided with raised structures 46, raised structures 46 is positioned at the vertical projection region 52 of light tight region 431 on the second electrode 44.Raised structures 46 is for utilizing the material identical with black matrix layer to make.The surface-coated of raised structures 46 has alignment film 48, and this alignment film 48 can be PI (Polyimide, pi) alignment film.Because PI alignment film has grappling effect to liquid crystal, therefore can be so that liquid crystal molecule be toppled over arrangement according to specific direction and tilt angle under the effect of PI alignment film.In the present embodiment, as shown in Figure 6, a raised structures 46 is set on the second electrode 44, in the initial process of alignment of liquid crystal, on raised structures 46 surfaces, be coated with under the effect of PI alignment film 48, can make the liquid crystal molecule between the first electrode 42 and the second electrode 44 according to certain tilt angle (being tilt angle), topple over arrangement towards raised structures 46, thereby make liquid crystal molecule there is tilt angle, make in a dot structure (between first electrode and the second electrode) to there is the not identical liquid crystal region of plurality of liquid crystals molecule toppling direction simultaneously, realize thus the initial orientation of liquid crystal.
Certainly, raised structures 46 also can utilize with color blocking rete or the identical material of photoresistance separation material rete (Photo Spacer, PS) and make.
Wherein, raised structures 46 is regular shape, so that the liquid crystal layer between the first electrode 42 and the second electrode 44 has the different liquid crystal region of plural lqiuid crystal molecule tipping direction.In present embodiment, as shown in Figure 4, raised structures 46 is cone, and the surfacing of raised structures 46, there is no angular structures.The top of raised structures 46 contacts the inside surface of the first electrode 42 of termination electrode with conduct, contacts with the surface of the first electrode 42 contiguous liquid crystal layers 45.As shown in Figure 6, in initial process of alignment, under the effect of the PI alignment film 48 on raised structures 46 surfaces, make all towards raised structures 46, to topple at the different liquid crystal molecule in position of relative raised structures 46, with raised structures 46 ordered arrangements round circular, in the liquid crystal layer 45 between the first electrode 42 and the second electrode 44, there is the different liquid crystal region of a plurality of lqiuid crystal molecule tipping directions, take raised structures 46 as reference point, the first liquid crystal region 61 that for example liquid crystal molecule is toppled over downwards, the second liquid crystal region 62 that liquid crystal molecule is toppled over to the right, the 4th liquid crystal region 64 that the 3rd liquid crystal region 63 that liquid crystal molecule is upwards toppled over and liquid crystal molecule are toppled over left, certainly also have between the first liquid crystal region 61 and the second liquid crystal region 62, between the first liquid crystal region 61 and the 4th liquid crystal region 64, the second liquid crystal region 62 and the 3rd liquid crystal region 63, the liquid crystal region that liquid crystal molecule between the 3rd liquid crystal region 63 and the 4th liquid crystal region 64 is other toppling directions, and between each liquid crystal region, there is no obvious separatrix.Wherein, described is all for the view shown in Fig. 6 upwards, downwards, left and to the right, on other view basis, can be also other form of presentation.The liquid crystal region by formation with multiple different toppling directions can make display panels have good wide viewing angle characteristic.
Wherein, in present embodiment, as the first electrode 42 to termination electrode, there is no herring-bone form structure, there is no crack and projection yet.When raised structures 46 is arranged on the second electrode 44, the first electrode 42 is the strip like transparent electrode of a monoblock as the second electrode 44 to termination electrode, in this transparency electrode, there is no herring-bone form structure, be not provided with projection and crack yet, therefore in the initial process of alignment of liquid crystal, be only to utilize the raised structures 46 on the second electrode 44 to carry out orientation, can make does not thus have obvious separatrix between the different liquid crystal region of lqiuid crystal molecule tipping direction, as shown in fig. 6.For other embodiment, when raised structures 46 is arranged on the first electrode 42, as to not also being provided with projection, crack and herring-bone form structure on the second electrode 44 of termination electrode.
Wherein, the position at 431 places, light tight region of second substrate 43 is corresponding with the middle part of the first electrode 42, thereby raised structures 46 is also corresponding with the middle part of the first electrode 42.Certainly, light tight region 431 can be also the corresponding setting of fringe region or other region with the first electrode 42.
In present embodiment, utilize raised structures 46 to realize the initial orientation of liquid crystal, make a liquid crystal molecule in dot structure all be centered around raised structures 46 and towards raised structures 46 directions, topple over arrangement around, as shown in Figure 7, therefore when driving display panels to show, be only can form dark areas 71 in the position at raised structures 46 places, and be all transmission region in other regions 72, compare with formed two concealed wires that intersect vertically of existing herring-bone form pixel electrode structure, can greatly improve penetrance, and do not need to increase light shield number as prior art, can reduce light shield number, be conducive to reduce costs.
In addition, raised structures 46 is positioned at the vertical projection region 52 in light tight region 431, be that raised structures 46 is to arrange corresponding to the position at black matrix place, even if therefore can form dark areas in the position at raised structures 46 places, also can not affect the transmission region of the first electrode 42, thereby can further improve penetrance.
When subsequent drive display panels shows, when the first electrode 42 and the second electrode 44 are applied after voltage, in liquid crystal layer 45, form electric field, the liquid crystal molecule under the effect of electric field with initial flip angle and toppling direction guides adjacent ordered liquid crystal molecule to arrange under the effect of electric field, to realize the demonstration of display panels.
Certainly, in embodiments of the present invention, raised structures 46 can also be frustum, column or gengon, for example can also the side's of being body, difform raised structures 46 all can be so that liquid crystal molecule has tilt angle by the effect of the alignment film of its surface-coated, and topple over arrangement towards raised structures, thereby make a liquid crystal molecule in dot structure there is multiple different toppling direction.In addition, raised structures 46 can be also irregularly shaped, such as irregular four Bian Ti etc.The size of raised structures 46 can arrange as required, only otherwise the vertical projection region that exceeds light tight region 431 all can.In addition, the top of raised structures 46 can not contact to the inside surface of the first electrode 42 of termination electrode with conduct yet, can maintain a certain distance between the two.Certainly, raised structures 46 also can be arranged on the first electrode 42, and is positioned at the vertical projection region of light tight region 431 on the first electrode 42.
In embodiments of the present invention, as shown in Figure 8, display panels also comprises the orthogonal upper polaroid 47 of absorption axes and lower polaroid 49.Upper polaroid 47 is arranged on second substrate 43 side of liquid crystal layer 45 dorsad, and lower polaroid 49 is arranged on first substrate 41 side of liquid crystal layer 45 dorsad.Wherein, upper polaroid 47 and lower polaroid 49 are rotatory polarization sheet.In the initial orientation of liquid crystal of the present invention, the liquid crystal molecule in a dot structure is toppled over arrangement around raised structures 46, has multiple different toppling direction, coordinates rotatory polarization sheet can reduce the appearance of dark line, is conducive to improve penetrance.
In order to improve the response time of liquid crystal, in embodiments of the present invention, as shown in Figure 9, in liquid crystal layer 45, be mixed with in addition polymer monomer (Monomer) 50, to assist the initial orientation of liquid crystal.Polymer monomer 50 is the monomer molecule to light sensitive, while being irradiated by light, can anti-life react to form the polymkeric substance of auxiliary orientation, and liquid crystal can be toppled over according to certain orientation.In the initial process of alignment of liquid crystal, under the effect of the PI alignment film 48 on raised structures 46 surfaces, can make liquid crystal molecule there is tilt angle, thereby when subsequent drive display panels shows can so that liquid crystal fast along the toppling direction ordered arrangement of initial orientation, to realize demonstration.Yet, liquid crystal is more away from raised structures 46, it is subject to the impact of PI alignment film 48 on raised structures 46 surfaces less, therefore be more not easy to form required tilt angle, cause in subsequent drive display panels, away from the liquid crystal molecule rotation of the raised structures 46 needed time when showing required angle more.In present embodiment, by sneak into polymer monomer 50 in liquid crystal layer, make most liquid crystal molecules can both form required tilt angle, can accelerate thus the liquid crystal response time far away apart from raised structures 46, make liquid crystal response speed faster.
Further, while sneaking into polymer monomer 50 in liquid crystal, in the initial process of alignment of liquid crystal, also need liquid crystal to carry out UV UV-irradiation so that liquid crystal molecule forms tilt angle.Particularly, as shown in Figure 9, Fig. 9 makes liquid crystal molecule 451 form the schematic diagram of the auxiliary process of alignment of tilt angle for sneak into polymer monomer 50 in liquid crystal layer 45 after, in figure, is only wherein the part-structure that display panels is shown.In addition, as shown in Figure 9, in present embodiment, the side that a side of the first electrode 42 contiguous liquid crystal layers 45 is also coated with alignment film 421, the second electrode 44 contiguous liquid crystal layers 45 is also coated with alignment film 441, in order to realize the orientation to liquid crystal molecule 451.In step S801, polymer monomer 50 is sneaked in liquid crystal.Step S802, applies voltage to the first electrode 42 and the second electrode 44, so that the liquid crystal molecule 451 between the first electrode 42 and the second electrode 44 has tilt angle.Under the effect of electric field, the liquid crystal molecule that can control away from raised structures 46 forms required tilt angle.Step S803, irradiates UV ultraviolet light to liquid crystal layer 45, so that liquid crystal molecule 451 is fixed on the ordered state that has tilt angle and topple over along predetermined direction.When liquid crystal layer is irradiated to UV ultraviolet light, polymer monomer 50 react formation polymkeric substance under the effect of UV ultraviolet light, and the liquid crystal molecule 45 that makes to have tilt angle under the effect of this polymkeric substance is fixed on the surface of alignment film 441,421.Step S804, stops irradiating UV ultraviolet light, and stops the first electrode 42 and the second electrode 44 to apply voltage.Stopping irradiating after UV ultraviolet light, liquid crystal molecule 451 is fixed on the state that has tilt angle and arrange along predetermined direction, therefore after stopping applying voltage, can make liquid crystal molecule 451 still there is tilt angle and topple over along predetermined direction, thereby realize the initial orientation of liquid crystal.
Consult Figure 10, in manufacture method one embodiment of display panels of the present invention, comprise the steps:
Step S1001: first substrate, second substrate and liquid crystal are provided, and wherein, second substrate comprises light tight region.In present embodiment, first substrate is used to form array base palte, and second substrate is used to form colored optical filtering substrates.In successive process, on colored optical filtering substrates, be conventionally provided with black matrix, in order to the color blocking of interval different colours, the light tight region of second substrate is the position of corresponding black matrix.
Step S1002: the side at first substrate forms the first electrode, forms the second electrode in a side of second substrate.The first electrode is arranged on first substrate as pixel electrode, and the second electrode is arranged on second substrate as public electrode, and the first electrode and the second electrode are for realizing the demonstration of display panels.
Step S1003: on the first electrode or the second electrode, form raised structures, and at the surface-coated alignment film of raised structures.In present embodiment, raised structures is formed on the second electrode, and raised structures is for utilizing the material identical with black matrix layer to make.Certainly, in other embodiments, raised structures also can be formed on the first electrode, and can utilize the material identical with color blocking rete or photoresistance separation material rete to make.
Step S1004: by first substrate and second substrate to box, and the first electrode and the second electrode are between first substrate and second substrate, and make light tight region be positioned at the vertical projection region of the first electrode on second substrate, and make raised structures be positioned at the vertical projection region in light tight region.First substrate and second substrate are fit together, and in order to form liquid crystal cell, wherein, when to box, the first electrode and the second electrode are adjoining, and the contiguous second substrate of a side that first substrate is provided with the first electrode is provided with a side of the second electrode.In addition, make for the region of black matrix is set, to be positioned in second substrate the vertical projection region of the first electrode, and make raised structures be positioned at the vertical projection region of black matrix on the second electrode while forming raised structures on the second electrode.
Step S1005: injecting liquid crystal between first substrate and second substrate to form liquid crystal layer between first substrate and second substrate, the liquid crystal molecule in the liquid crystal layer under the effect of alignment film between the first electrode and the second electrode has tilt angle.
By the surface-coated alignment film at raised structures, thereby in the initial process of alignment of liquid crystal, under the effect of alignment film, can make liquid crystal molecule arrange according to special angle, thereby make molecule there is tilt angle.
In present embodiment, by form raised structures on the second electrode, utilize raised structures to realize the initial orientation of liquid crystal, under the effect of raised structures, make liquid crystal molecule be centered around raised structures around and topple over arrangement towards raised structures, therefore when driving display panels to show, be only can form dark areas in the position of raised structures, and in other regions, be all transmission region, compare with formed two concealed wires that intersect vertically of existing herring-bone form pixel electrode structure, can greatly improve penetrance, and do not need to increase light shield number as prior art, can reduce light shield number, be conducive to reduce costs.In addition, by utilizing the raised structures of present embodiment to realize the initial orientation of liquid crystal, can make in a dot structure, to there is the different liquid crystal region of plurality of liquid crystals molecule toppling direction, can make thus display panels there is good wide viewing angle characteristic.
In addition, raised structures is positioned at the vertical projection region in light tight region, and raised structures is to arrange corresponding to the position at black matrix place, even if therefore can form dark areas in the position at raised structures place, also can not affect the transmission region of the first electrode, thereby can further improve penetrance.
In the embodiment of the manufacture method of display panels of the present invention, the step that forms raised structures on the second electrode comprises: the raised structures of formation rule shape on the second electrode, so that the liquid crystal layer between the first electrode and the second electrode has the different liquid crystal region of plural lqiuid crystal molecule tipping direction.
Particularly, in present embodiment, on the second electrode, form the raised structures of cone, and the top of raised structures is contacted to the inside surface of the first electrode of termination electrode with conduct.By the raised structures of cone, can so that the liquid crystal molecule between the first electrode and the second electrode round circular raised structures ordered arrangement, therefore different at raised structures its toppling direction of liquid crystal molecule around, but all towards raised structures, topple over, in the liquid crystal layer between the first electrode and the second electrode, there is the different liquid crystal region of a plurality of lqiuid crystal molecule tipping directions, realize thus the initial orientation of liquid crystal, and can make display panels there is good wide viewing angle characteristic.
Certainly, in other embodiments, raised structures can also be frustum, column or gengon, for example can also the side's of being body, difform raised structures all can be so that liquid crystal molecule has tilt angle by the effect of the alignment film of its surface-coated, and topple over arrangement towards raised structures, thereby make a liquid crystal molecule in dot structure there is multiple different toppling direction.In addition, raised structures can be also irregularly shaped, such as irregular four Bian Ti etc.The size of raised structures can arrange as required, only otherwise the vertical projection region that exceeds light tight region all can.In addition, the top of raised structures can not contact to the inside surface of the first electrode of termination electrode with conduct yet, can maintain a certain distance between the two.Certainly, raised structures also can be arranged on the first electrode, and is positioned at the vertical projection region of light tight region on the first electrode.
In embodiments of the present invention, when raised structures is formed on the second electrode, in forming the process of the first electrode, on the first electrode, do not form herring-bone form structure, projection and crack, the first electrode as the second electrode to termination electrode, it is the strip like transparent electrode of a monoblock, is not provided with herring-bone form structure, crack and projection in this transparency electrode.
In addition, in embodiments of the present invention, inject liquid crystal between first substrate and second substrate after, also comprise the steps: first substrate dorsad a side of liquid crystal layer form lower polaroid, second substrate dorsad a side of liquid crystal layer form polaroid, wherein, upper polaroid and lower polaroid are rotatory polarization sheet.In present embodiment, because liquid crystal molecule is round raised structures ordered arrangement, liquid crystal molecule has multiple different toppling direction, therefore coordinates rotatory polarization sheet can reduce the appearance of dark line, is conducive to improve penetrance.
In order to improve the response speed of liquid crystal, accelerate the response time of liquid crystal, in embodiments of the present invention, consult Figure 11, the step inject liquid crystal between first substrate and second substrate after also comprises:
Step S1101: injection of polymer monomer between first substrate and second substrate, to sneak into polymer monomer in the liquid crystal between first substrate and second substrate.Wherein, by before Liquid crystal pour first substrate and second substrate, polymer monomer can be sneaked in liquid crystal, then will be mixed with between the Liquid crystal pour first substrate and second substrate of polymer monomer.
Step S1102: to the first electrode and the second electrode application voltage, so that the liquid crystal molecule in liquid crystal layer has tilt angle.After completing the injecting program of liquid crystal and polymer monomer, in the initial process of alignment of follow-up liquid crystal, to the first electrode and the second electrode application voltage, with the liquid crystal molecule of controlling away from raised structures, form required tilt angle.
Step S1103: liquid crystal layer is irradiated to UV ultraviolet light, so that liquid crystal molecule is fixed on the ordered state that has tilt angle and topple over along predetermined direction.When liquid crystal layer is irradiated to UV ultraviolet light, polymer monomer reacts and forms polymkeric substance under the effect of UV ultraviolet light, makes the liquid crystal molecule with tilt angle be fixed on the ordered state of toppling over along predetermined direction under the effect of this polymkeric substance.
Step S1104: stop irradiating UV ultraviolet light, and stop the first electrode and the second electrode application voltage.Stopping irradiating after UV ultraviolet light, liquid crystal molecule is fixed on the state that has tilt angle and arrange along predetermined direction, therefore after stopping applying voltage, can make liquid crystal molecule still have tilt angle and topple over along predetermined direction, thereby realize the initial orientation of liquid crystal.
By above-mentioned auxiliary process of alignment, can, so that also there is required tilt angle and predetermined toppling direction away from the liquid crystal molecule of raised structures, therefore can improve the response speed of liquid crystal.
The foregoing is only embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a display panels, is characterized in that, comprises first substrate, second substrate and the liquid crystal layer between described first substrate and described second substrate;
One side of the contiguous described liquid crystal layer of described first substrate is provided with the first electrode, and a side of the contiguous described liquid crystal layer of described second substrate is provided with the second electrode;
Described second substrate comprises light tight region, described light tight region is positioned at the vertical projection region of described the first electrode, on described the second electrode or described the first electrode, be provided with raised structures, described raised structures be positioned at the vertical projection region in light tight region, the surface-coated of described raised structures has alignment film, so that the liquid crystal molecule in the liquid crystal layer between described the first electrode and described the second electrode has tilt angle.
2. display panels according to claim 1, is characterized in that,
Described raised structures is regular shape, so that the liquid crystal layer between described the first electrode and described the second electrode has the different liquid crystal region of plural lqiuid crystal molecule tipping direction.
3. display panels according to claim 2, is characterized in that,
Described raised structures is circular cone, frustum, column or gengon, and the top of described raised structures with termination electrode inside surface is contacted or is not contacted.
4. display panels according to claim 3, is characterized in that,
Described do not have herring-bone form structure, projection and crack to termination electrode.
5. display panels according to claim 1, is characterized in that,
Described second substrate is colored optical filtering substrates, and described raised structures is arranged on described the second electrode, and described raised structures is for utilizing the material identical with black matrix" rete, color blocking rete or photoresistance separation material rete to make.
6. display panels according to claim 1, is characterized in that,
Described display panels also comprises the orthogonal upper polaroid of absorption axes and lower polaroid, described upper polaroid is arranged on a described second substrate side of described liquid crystal layer dorsad, described lower polaroid is arranged on a described first substrate side of described liquid crystal layer dorsad, and described upper polaroid and described lower polaroid are rotatory polarization sheet.
7. display panels according to claim 1, is characterized in that,
In described liquid crystal layer, be also provided with polymer monomer, described polymer monomer and described alignment film acting in conjunction are so that the liquid crystal molecule in the liquid crystal layer between described the first electrode and described the second electrode has tilt angle.
8. a manufacture method for display panels, is characterized in that, comprising:
First substrate, second substrate and liquid crystal are provided, and wherein, described second substrate comprises light tight region;
A side at described first substrate forms the first electrode, in a side of described second substrate, forms the second electrode;
On described the first electrode or described the second electrode, form raised structures, and at the surface-coated alignment film of described raised structures;
By described first substrate and described second substrate to box, and described the first electrode and described the second electrode are between described first substrate and described second substrate, make described light tight region be positioned at the vertical projection region of described the first electrode on described second substrate, and make described raised structures be positioned at the vertical projection region in described light tight region;
Between described first substrate and described second substrate, injecting described liquid crystal to form liquid crystal layer between described first substrate and described second substrate, the liquid crystal molecule in the liquid crystal layer under the effect of described alignment film between described the first electrode and described the second electrode has tilt angle.
9. method according to claim 8, is characterized in that,
The described step that forms raised structures on described the first electrode or the second electrode comprises:
The raised structures of formation rule shape on described the first electrode or the second electrode, so that the liquid crystal layer between described the first electrode and described the second electrode has the different liquid crystal region of plural lqiuid crystal molecule tipping direction.
10. method according to claim 9, is characterized in that,
Described on described the first electrode or the second electrode the step of the raised structures of formation rule shape comprise:
On described the first electrode or the second electrode, form the raised structures of circular cone, frustum, column or gengon, and the top that makes described raised structures with termination electrode inside surface is contacted or is not contacted.
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| PCT/CN2014/084636 WO2016023237A1 (en) | 2014-08-13 | 2014-08-18 | Liquid crystal display panel and manufacturing method therefor |
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| WO2018228359A1 (en) * | 2017-06-16 | 2018-12-20 | 京东方科技集团股份有限公司 | Display substrate, display panel and display device |
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| CN103149736B (en) * | 2013-02-28 | 2015-12-09 | 京东方科技集团股份有限公司 | Display panels and preparation method thereof |
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