CN104155808A - Liquid crystal display device capable of achieving visual angle switching - Google Patents
Liquid crystal display device capable of achieving visual angle switching Download PDFInfo
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- CN104155808A CN104155808A CN201410424259.9A CN201410424259A CN104155808A CN 104155808 A CN104155808 A CN 104155808A CN 201410424259 A CN201410424259 A CN 201410424259A CN 104155808 A CN104155808 A CN 104155808A
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Abstract
The invention provides a liquid crystal display device capable of achieving visual angle switching. The liquid crystal display device comprises a first substrate, a second substrate arranged opposite to the first substrate, and a liquid crystal layer located between the first substrate and the second substrate, wherein liquid crystal molecules in the liquid crystal layer are negative liquid crystal molecules, a pixel electrode and a common electrode are arranged on the second substrate, a first electrode is arranged on the surface, facing towards the liquid crystal layer, of the first substrate, the range of the initial pretilt angles of the liquid crystal molecules, adjacent to the first substrate, of the liquid crystal layer is larger than or equal to 30 degrees or smaller than 90 degrees, and the liquid crystal molecules, adjacent to the second substrate, of the liquid crystal layer are in homogeneous alignment. According to the liquid crystal display device capable of achieving visual angle switching, the purpose of switching between a wide visual angle and a narrow visual angle can be achieved without increasing the thickness of a liquid crystal display and the cost of a backlight device.
Description
Technical field
The present invention relates to liquid crystal indicator, particularly a kind of liquid crystal indicator that can realize wide viewing angle and the switching of narrow visual angle.
Background technology
Because liquid crystal indicator has the plurality of advantages such as frivolous, energy-conservation, radiationless, be widely used in the electronic equipments such as TV, PC, panel computer, personal digital assistant (PDA), mobile phone, digital camera.Wide viewing angle belongs to the mainstream development direction of liquid crystal indicator at present, and people watch the screen of wide viewing angle liquid crystal display device all can see complete and distortionless picture from different directions.But when relating to individual privacy and important information, the use of the display device of wide viewing angle under some occasion also can make people feel inconvenience.
Such as, on the one hand, portable electric appts for wide viewing angles such as notebook computer, personal digital assistant, panel computer, mobile phones, people can call, receive and send messages, surf the Net, process the affairs such as file according to this whenever and wherever possible, no matter be with the affairs in the relevant affairs of daily life or work, utilize these portable electronic device processes to get up very convenient, and, can also with together with other people, appreciate film, share photos etc.Yet, on the other hand, due to the portable electric appts of wide viewing angle can be in public or open space use, the privacy that is difficult to ensure user while utilizing the portable electronic device processes affairs of wide viewing angle, such as, while waiting for bus AT STATION, the people at user side and rear very likely gets a glimpse of the content on user's the screen of portable electric appts of wide viewing angle.
Therefore, except the demand of wide viewing angle, needing under the occasion of peep-proof, the display that display can be switched or adjust to narrow field-of-view mode also grows up gradually.At present, mainly containing two kinds of modes switches the wide viewing angle of display and narrow visual angle: the first is to realize by blinds Protective film, when needs carry out peep-proof, utilize blinds Protective film to cover screen and can dwindle visual angle, but this mode needs the extra blinds Protective film of preparing, and need user to carry, to user, cause great inconvenience; The second is two light source back light systems to be set in liquid crystal display for the visual angle of adjustable liquid crystal display display.This pair of light source back light system consists of in conjunction with anti-prismatic lens the light guide plate of two-layer laminate, the trend that top layer light guide plate (LGP-T) changes light in conjunction with anti-prismatic lens makes light be limited in narrow angular range, realize the narrow visual angle of liquid crystal display, bottom light guide plate (LGP-B) realizes the wide viewing angle of liquid crystal display in conjunction with the function of anti-prismatic lens.But this kind of two light source back light systems can cause the thickness of liquid crystal display and cost all to increase, and do not meet the lightening development trend of liquid crystal display.
Summary of the invention
Object of the present invention comprises provides a kind of liquid crystal indicator, with without use Protective film and do not increase the thickness of liquid crystal display and the condition of back lighting device cost under realize the object of wide viewing angle and the switching of narrow visual angle.
Particularly, the embodiment of the present invention provides a kind of liquid crystal indicator that switch at visual angle of realizing, and this liquid crystal indicator comprises first substrate, and this first substrate second substrate and the liquid crystal layer between this first substrate and this second substrate that are oppositely arranged.Liquid crystal molecule in this liquid crystal layer is negative liquid crystal molecule.On this second substrate, be provided with pixel electrode and public electrode, this first substrate is provided with the first electrode on the surface of this liquid crystal layer.The scope of the initial tilt angle of the liquid crystal molecule of contiguous this first substrate of this liquid crystal layer is for being more than or equal to 30 degree and being less than 90 degree, and the liquid crystal molecule of contiguous this second substrate of this liquid crystal layer is horizontal direction matching.
Preferably, this first electrode is transparency electrode, and when this first electrode is provided bias voltage when forming vertical electric field between this first, second substrate, this liquid crystal indicator is wide viewing angle display mode; When this first electrode is not provided bias voltage, this liquid crystal indicator is narrow visual angle display mode.
Preferably, the polarity of this bias voltage is contrary with the polarity of this public electrode.
Preferably, this first substrate is provided with alignment film on the surface of this liquid crystal layer, and this alignment film is to utilize the pi liquid of horizontal direction matching and the pi liquid of vertical orientation to mix according to a certain percentage the alignment film with nanostructured surface (nanostructured surfaces) forming after baking.
Preferably, this first substrate is provided with a plurality of raised structures on the surface of this liquid crystal layer, the shape of cross section of each raised structures is isosceles triangle, the base of this isosceles triangle is arranged on this first substrate, the scope at the base angle of this isosceles triangle is for being greater than 0 degree and being less than or equal to 60 degree, and the plurality of raised structures is provided with vertical orientation film towards the surface of this liquid crystal layer.
Preferably, this first substrate is provided with a plurality of raised structures on the surface of this liquid crystal layer, the shape of cross section of each raised structures is right-angle triangle, a right-angle side of this right-angle triangle is arranged on this first substrate, the hypotenuse of this right-angle triangle is with the scope of angle that is arranged on this right-angle side on this first substrate for being greater than 0 degree and being less than or equal to 60 degree, and the plurality of raised structures is provided with vertical orientation film towards the surface of this liquid crystal layer.
Preferably, the liquid crystal molecule of contiguous this first substrate of this liquid crystal layer tilts towards a direction under the effect of tilt angle.
Preferably, the liquid crystal molecule of contiguous this first substrate of this liquid crystal layer tilts towards both direction under the effect of tilt angle.
Preferably, the scope of the initial tilt angle of the liquid crystal molecule of contiguous this second substrate of this liquid crystal layer is for being more than or equal to 0 degree and being less than or equal to 5 degree.
Preferably, the initial tilt angle of the liquid crystal molecule of contiguous this second substrate of this liquid crystal layer is 2 degree.
The above-mentioned liquid crystal indicator providing due to the embodiment of the present invention is by arranging the liquid crystal layer of mixed orientation in the display framework planar rotating, when not applying bias voltage on this first electrode, because the tilt angle of the liquid crystal molecule at nearly second substrate place near the tilt angle of the liquid crystal molecule at contiguous this first substrate place is large, make to produce light leak in the screen stravismus direction of this liquid crystal indicator, to realize narrow visual angle display mode; When applying bias voltage with generation vertical electric field on this first electrode, this vertical electric field can reduce the tilt angle of the liquid crystal molecule at contiguous this first substrate place, and make to look side ways the corresponding minimizing of light leakage phenomena in direction at the screen of this liquid crystal indicator, therefore the visual angle that increases this liquid crystal indicator, to realize wide viewing angle display mode.Therefore this liquid crystal indicator, without using Protective film and two kinds of back lighting devices need not being set, therefore can not increase the object that realizes wide viewing angle and the switching of narrow visual angle under the thickness of liquid crystal display and the condition of back lighting device cost.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, and for above and other object of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of a kind of liquid crystal indicator of providing of the first embodiment of the present invention.
Fig. 2 is the application schematic diagram of the liquid crystal indicator shown in Fig. 1 under the display mode of narrow visual angle.
Fig. 3 is the application schematic diagram of the liquid crystal indicator shown in Fig. 1 under wide viewing angle display mode.
Fig. 4 a to 4f is the visual angle simulation schematic diagram of the liquid crystal indicator shown in Fig. 1 under the display mode of narrow visual angle.
Fig. 5 a and 5b are the visual angle simulation schematic diagram of the liquid crystal indicator shown in Fig. 1 under wide viewing angle display mode.
Fig. 6 is the visual angle simulation schematic diagram of traditional fringe field switch type liquid crystal indicator.
Fig. 7 a is when GTG is 0, the rotation status schematic diagram of the liquid crystal molecule of the liquid crystal indicator shown in Fig. 1.
Fig. 7 b is when GTG is 0, and the liquid crystal indicator shown in Fig. 1 is the variation contrast schematic diagram of the tilt angle of the liquid crystal molecule of the contiguous first substrate under wide viewing angle and narrow visual angle display mode respectively.
Fig. 8 a is when GTG is 255, the rotation status schematic diagram of the liquid crystal molecule of the liquid crystal indicator shown in Fig. 1.
Fig. 8 b is when GTG is 255, and the liquid crystal indicator shown in Fig. 1 is the variation contrast schematic diagram of the tilt angle of the liquid crystal molecule of the contiguous first substrate under wide viewing angle and narrow visual angle display mode respectively.
Fig. 9 is the display effect schematic diagram of the liquid crystal indicator shown in Fig. 1 under the display mode of narrow visual angle.
Figure 10 is the display effect schematic diagram of the liquid crystal indicator shown in Fig. 1 under wide viewing angle display mode.
Figure 11 is the cross-sectional view of a kind of liquid crystal indicator of providing of second embodiment of the invention.
Figure 12 is the cross-sectional view of a kind of liquid crystal indicator of providing of third embodiment of the invention.
Embodiment
For further setting forth the present invention, reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of liquid crystal indicator, method, step, structure, feature and effect to proposing according to the present invention, be described in detail as follows.
Relevant aforementioned and other technology contents of the present invention, Characteristic, can clearly present in following cooperation in describing in detail with reference to graphic preferred embodiment.By the explanation of embodiment, when can be to reach technological means and the effect that predetermined object takes to be able to more deeply and concrete understanding to the present invention, yet appended graphic being only to provide with reference to the use with explanation be not used for the present invention to be limited.
Please refer to Fig. 1, Fig. 1 is the cross-sectional view of a kind of liquid crystal indicator of providing of first embodiment of the invention.As shown in Figure 1, liquid crystal indicator 10 comprises first substrate 11, and this first substrate 11 second substrate 12 and the liquid crystal layer 13 between first substrate 11 and second substrate 12 that are oppositely arranged.This liquid crystal indicator 10 is applicable to in-plane and changes (In-Plane Switching, IPS) type, fringe field switch the liquid crystal indicators that liquid crystal molecule turns at the plane internal rotation parallel with substrate when applying the electric field that shows use such as (Fringe Field Switching, FFS) type.In the present embodiment, this liquid crystal indicator 10 be take fringe field switch type and is described as example.
First substrate 11 is colored filter substrate, and second substrate 12 is thin-film transistor array base-plate.The first substrate 11 dorsad surface of liquid crystal layer 13 is provided with the first polaroid 110, and the second substrate 12 dorsad surface of liquid crystal layer 13 is provided with the second polaroid 120, and this first polaroid 110 is mutually vertical with the light transmission shaft direction of this second polaroid 120.
First substrate 11 is disposed with the first electrode 112 and the first alignment film 114 towards the surface of liquid crystal layer 13.This first electrode 112 is transparency electrode.This first alignment film 114 is for utilizing the pi liquid of horizontal direction matching and the pi of vertical orientation (Polyimide, PI) liquid mixes the alignment film with nanostructured surface (nanostructured surfaces) forming after baking according to a certain percentage, wherein, in the mixing pi liquid of this vertical orientation and horizontal direction matching, the concentration of the pi of vertical orientation is 0%～23% (quality).
Second substrate 12 is disposed with the second electrode 122, insulation course 124, third electrode 126 and the second alignment film 128 towards the surface of liquid crystal layer 13, and the brushing direction that makes the second alignment film 128 is parallel to the light transmission shaft direction of the second polaroid 120, the brushing direction of the first alignment film 114 is vertical with the brushing direction of the second alignment film 128 simultaneously.This second electrode 122 is transparency electrode with third electrode 126.In the present embodiment, this second electrode 122 is plane-shape electrode structure, this third electrode 126 comprises a plurality of strip sub-electrodes that are parallel to each other (not indicating), in other embodiments, this second electrode 122 also can comprise a plurality of strip sub-electrodes that are parallel to each other, and the strip sub-electrode of the second electrode 122 and the strip sub-electrode of this third electrode 126 can insulate crossing.In the present embodiment, this second electrode 122 is pixel electrode, and this third electrode 126 is public electrode, and in other embodiments, this second electrode 122 also can be public electrode, and this third electrode 126 is pixel electrode.
The scope of the initial pretilt theta of the liquid crystal molecule of these liquid crystal layer 13 contiguous first substrates 11 is for being more than or equal to 30 degree and being less than 90 degree, that is: 30 °≤θ ﹤ is 90 °; The liquid crystal molecule of these liquid crystal layer 13 contiguous second substrates 12 is horizontal direction matching, in actual applications, the scope of the initial pretilt theta of the liquid crystal molecule of these liquid crystal layer 13 contiguous second substrates 12 can be and is more than or equal to 0 degree and is less than or equal to 5 degree, that is: 0 ° ≦ θ≤5 °, are preferably 2 degree.In the present embodiment, the liquid crystal molecule of these liquid crystal layer 13 contiguous these first substrates 11 tilts towards a direction under the effect of tilt angle.
Liquid crystal molecule in liquid crystal layer 13 is negative liquid crystal molecule, because negative liquid crystal molecule is along the direction rotation vertical with direction of an electric field, while therefore applying the electric field that shows use in this liquid crystal indicator 10, negative liquid crystal molecule in liquid crystal layer 13 can be at the rotation with in surface parallel with first substrate 11, second substrate 12, and short-axis direction is parallel with direction of an electric field, make the light transmission of liquid crystal layer 13 better.
Liquid crystal indicator 10 can switch between wide viewing angle and narrow visual angle display mode.Please refer to Fig. 2, Fig. 2 is the application schematic diagram of the liquid crystal indicator 10 shown in Fig. 1 under the display mode of narrow visual angle.As shown in Figure 2, on this first electrode 112, be not provided bias voltage, because the tilt angle of the liquid crystal molecule at nearly second substrate 12 places near the tilt angle of the liquid crystal molecule at contiguous these first substrate 11 places is large, therefore when this liquid crystal indicator 10 shows, in the screen stravismus direction of this liquid crystal indicator 10, pass the light of liquid crystal molecule because phase delay is no longer mated with polaroid, there is light leakage phenomena, cause when the screen stravismus direction of this liquid crystal indicator 10 is watched screen, contrast on screen reduces, affect viewing effect, thereby realize narrow visual angle display mode.
Please refer to Fig. 3, Fig. 3 is the application schematic diagram of the liquid crystal indicator 10 shown in Fig. 1 under wide viewing angle display mode.As shown in Figure 3, provide certain bias voltage (as 5V) to the first electrode 112, the polarity of this bias voltage is contrary with the polarity of this public electrode, thereby forms vertical electric field between first, second substrate 11,12.Due to the major axis of negative liquid crystal molecule under electric field action along the direction rotation perpendicular to electric field, therefore, existence due to this vertical electric field, liquid crystal molecule in liquid crystal layer 13 is under the effect of this vertical electric field, the tilt angle of the liquid crystal molecule at contiguous these first substrate 11 places can reduce thereupon, when being reduced to tilt angle with the liquid crystal molecule at contiguous second substrate 12 places and approaching, the corresponding minimizing of light leakage phenomena meeting in the screen stravismus direction of this liquid crystal indicator 10, therefore the visual angle of this liquid crystal indicator 10 increases thereupon, thereby realizes wide viewing angle display mode.
Below the visual angle to utilize TechWiz software to simulate, design sketch are further described this liquid crystal indicator 10.
Fig. 4 a to 4f is the visual angle simulation schematic diagram of the liquid crystal indicator 10 shown in Fig. 1 under the display mode of narrow visual angle.Wherein, Fig. 4 a, 4b, 4c, 4d, 4e and 4f show respectively while not being provided bias voltage on this first electrode 112, when the initial pretilt theta of the liquid crystal molecule of these liquid crystal layer 13 contiguous first substrates 11 is respectively 30 degree, 40 degree, 50 degree, 60 degree, 70 are spent and 80 spend, the simulation visual angle of this liquid crystal indicator 10.From Fig. 4 a to 4f, can find out, increase along with initial pretilt theta, this liquid crystal indicator 10 in the horizontal direction upward angle of visibility can reduce gradually, as being 40 while spending when initial pretilt theta, in horizontal direction, can watch effective angular field of view of screen to be about-30 degree to 30 degree, meet the demand that narrow visual angle shows.
Refer to following table, it is 40 while spending that this table is depicted as initial pretilt theta, the simulation visual angle of this liquid crystal indicator 10 in the direction of upper and lower, left and right when the bias voltage providing on this first electrode 112 is respectively 0V (bias voltage is not provided), 2V, 3V, 4V, 5V, 6V, 7V, 8V, 9V and 10V.
As can be seen from the table, the bias voltage providing on this first electrode 112 is 0V, while not namely being provided bias voltage, the maximum visual angle of this liquid crystal indicator 10 on left and right directions (being horizontal direction) be-30 degree and 30 degree respectively, meet the demand that narrow visual angle shows.And bias voltage is when up increase from 2V, it is large that visual angle also becomes thereupon, and start to 10V from 4V, and effective visual angle of direction all can reach 85 degree up and down, and does not almost change.As can be seen here, provide the bias voltage of 4V can realize the demand that wide viewing angle shows, yet, consider other factors such as penetrance, take the bias voltage of 5V as good, that is to say, the bias voltage of 5V not only can be realized the demand that wide viewing angle shows, and can meet other display conditions such as penetrance.
Fig. 5 a, 5b are the visual angle simulation schematic diagram of the liquid crystal indicator shown in Fig. 1 under wide viewing angle display mode.Wherein, Fig. 5 a is that the initial pretilt theta of being close to the liquid crystal molecule of first substrates 11 when this liquid crystal layer 13 is 40 degree, and the simulation visual angle of this liquid crystal indicator 10 when the bias voltage that offers the first electrode 112 is 5V, Fig. 5 b is that the initial pretilt theta when the liquid crystal molecule of this liquid crystal layer 13 contiguous first substrates 11 is 40 degree, and the simulation visual angle of the bias voltage that offers the first electrode 112 this liquid crystal indicator 10 while being 10V.From Fig. 5 a and Fig. 5 b figure, can find out, under the condition that is 10 in contrast (white dashed line shown in Fig. 5 a and Fig. 5 b be contrast be 10 etc. line of correlation), when bias voltage is respectively 5V and 10V, the effective visual angle of this liquid crystal indicator 10 in direction up and down all can reach 85 degree, and the center contrast difference of the two is little, therefore, bias voltage is elected the demand that 5V can meet wide viewing angle demonstration as.
Please refer to Fig. 6, Fig. 6 is the visual angle simulation schematic diagram of traditional edge electric field pattern liquid crystal indicator.Wherein, Fig. 6 represents is the simulation visual angle that the liquid crystal molecule of the traditional edge electric field pattern liquid crystal indicator initial tilt angle at contiguous first, second substrate place is 2 these liquid crystal indicators while spending.Comparison diagram 5a and Fig. 6, can find out, the effective visual angle of this liquid crystal indicator 10 in direction up and down all can reach 85 degree, and little with the center contrast difference of traditional edge electric field pattern liquid crystal indicator, therefore the liquid crystal indicator 10 that, bias voltage is elected 5V as can be realized the display effect close to traditional edge electric field pattern liquid crystal indicator.
Please refer to Fig. 7 a and Fig. 7 b, Fig. 7 a is when GTG is 0, the rotation status schematic diagram of the liquid crystal molecule of the liquid crystal indicator 10 shown in Fig. 1, Fig. 7 b is when GTG is 0, and the liquid crystal indicator 10 shown in Fig. 1 is the variation contrast schematic diagram of the tilt angle of the liquid crystal molecule of the contiguous first substrate 11 under wide viewing angle and narrow visual angle display mode respectively.Particularly, it is that 3.2 μ m places (all can value in the altitude range apart from second substrate 12 is 2.5um～3.5um that Fig. 7 b is depicted as the height of getting when the thickness of liquid crystal box of this liquid crystal indicator 10 is 3.5 μ m apart from second substrate 12, that at this, choose is 3.2um) liquid crystal molecule (as shown in Figure 7a) under wide viewing angle and narrow visual angle display mode along the variation of the diverse location place tilt angle of the xsect of liquid crystal indicator 10, can find out, when GTG is 0, tilt angle while providing the tilt angle of the liquid crystal molecule of the contiguous first substrate 11 after the bias voltage of 5V to be starkly lower than the bias voltage that 0V is provided.
Please refer to Fig. 8 a and Fig. 8 b, Fig. 8 a is when GTG is 255, the rotation status schematic diagram of the liquid crystal molecule of the liquid crystal indicator 10 shown in Fig. 1, Fig. 8 b is when GTG is 255, and the liquid crystal indicator 10 shown in Fig. 1 is the variation contrast schematic diagram of the tilt angle of the liquid crystal molecule of the contiguous first substrate 11 under wide viewing angle and narrow visual angle display mode respectively.Particularly, Fig. 8 b is depicted as the variation along the diverse location place tilt angle of the xsect of liquid crystal indicator 10 under wide viewing angle and narrow visual angle display mode of the liquid crystal molecule got when the thickness of liquid crystal box of this liquid crystal indicator 10 is 3.5 μ m with the same position place shown in Fig. 7 a, can find out, when GTG is 255, provide the tilt angle of the liquid crystal molecule of the contiguous first substrate 11 after the bias voltage of 5V to be starkly lower than tilt angle when bias voltage is not provided.Therefore, Fig. 7 b and Fig. 8 b also can prove, under the display mode of narrow visual angle, the tilt angle of the liquid crystal molecule of contiguous first substrate 11 is larger, and after applying bias voltage, the tilt angle of the liquid crystal molecule of contiguous first substrate 11 obviously reduces, thereby can realize the object that wide viewing angle shows.
Please refer to Fig. 9, Fig. 9 is the display effect schematic diagram of the liquid crystal indicator 10 shown in Fig. 1 under the display mode of narrow visual angle.Wherein, at the initial tilt angle of the liquid crystal molecule of this liquid crystal layer 13 contiguous first substrates 11, be 40 while spending, can can obviously find out from Fig. 9, at least in the horizontal direction, the image effect of watching from stravismus angles more than 45 degree is more poor than the image effect of watching from screen pros, therefore meet the demand that narrow visual angle shows, can effectively play the effect of peep-proof.
Please refer to Figure 10, Figure 10 is the display effect schematic diagram of the liquid crystal indicator 10 shown in Fig. 1 under wide viewing angle display mode.Wherein, at the initial tilt angle of the liquid crystal molecule of this liquid crystal layer 13 contiguous first substrates 11, be 40 while spending, can can obviously find out from Figure 10, in direction up and down, the image effect of watching from the stravismus angle of 45 degree is all very nearly the same with the image effect of watching from screen pros, therefore meets the demand that wide viewing angle shows.
In sum, above-mentioned liquid crystal indicator 10 is by arranging the liquid crystal layer of mixed orientation in the display framework planar rotating, when not applying bias voltage on this first substrate 11, because the tilt angle of the liquid crystal molecule at nearly second substrate 12 places near the tilt angle of the liquid crystal molecule at contiguous these first substrate 11 places is large, make to produce light leak in the screen stravismus direction of this liquid crystal indicator 10, to realize narrow visual angle display mode; When applying bias voltage with generation vertical electric field on this first substrate 11, this vertical electric field can reduce the tilt angle of the liquid crystal molecule at contiguous these first substrate 11 places, and make to look side ways the corresponding minimizing of light leakage phenomena in direction at the screen of this liquid crystal indicator 10, therefore the visual angle that increases this liquid crystal indicator 10, to realize wide viewing angle display mode.Therefore this liquid crystal indicator 10, without using Protective film and two kinds of back lighting devices need not being set, therefore can not increase the object that realizes wide viewing angle and the switching of narrow visual angle under the thickness of liquid crystal display and the condition of back lighting device cost.
Please refer to Figure 11, Figure 11 is the cross-sectional view of a kind of liquid crystal indicator of providing of second embodiment of the invention.The mode of orientation of liquid crystal molecule that the difference of the liquid crystal indicator 10 that as shown in figure 11, this liquid crystal indicator 20 provides from the first embodiment is mainly to realize liquid crystal layer 23 contiguous first substrates 21 is different.This first substrate 21 is provided with a plurality of raised structures 210 on the surface of this liquid crystal layer 23, this raised structures 210 can be the strip structure being parallel to each other, the shape of cross section of this raised structures 210 is isosceles triangle, the base of this isosceles triangle is arranged on this first substrate 21, the scope of the base angle of this isosceles triangle is for being greater than 0 degree and being less than or equal to 60 degree, thereby make the scope of initial tilt angle of liquid crystal molecule of contiguous this first substrate for being more than or equal to 30 degree and being less than 90 degree, the plurality of raised structures 210 is provided with vertical orientation film 212 on the surface of this liquid crystal layer 23, thereby according to the cooperation of this raised structures 210 and vertical orientation film 212 with the scope of initial tilt angle of liquid crystal molecule that realizes the contiguous first substrates 21 of liquid crystal layer 23 for being more than or equal to 30 degree and being less than 90 degree.
In the present embodiment, as shown in figure 11, the liquid crystal molecule of this liquid crystal layer 23 contiguous these first substrates 21 tilts towards both direction under the effect of tilt angle, perpendicular to the direction of two waists of the isosceles triangle xsect of this raised structures 210.
Please refer to Figure 12, Figure 12 is the cross-sectional view of a kind of liquid crystal indicator of providing of third embodiment of the invention.The mode of orientation of liquid crystal molecule that the difference of the liquid crystal indicator 10 that as shown in figure 11, this liquid crystal indicator 30 provides from the first embodiment is mainly to realize liquid crystal layer 33 contiguous first substrates 31 is different.This first substrate 31 is provided with a plurality of raised structures 310 on the surface of this liquid crystal layer 33, this raised structures 310 can be the strip structure being parallel to each other, the shape of cross section of this raised structures 310 is right-angle triangle, a right-angle side of this right-angle triangle is arranged on this first substrate 31, the hypotenuse of this right-angle triangle with the scope of angle β that is arranged on this right-angle side on this first substrate 31 for being greater than 0 degree and being less than or equal to 60 degree, thereby make the scope of initial tilt angle of liquid crystal molecule of contiguous this first substrate for being more than or equal to 30 degree and being less than 90 degree, the plurality of raised structures 310 is provided with vertical orientation film 312 towards the surface of this liquid crystal layer 33, thereby according to the cooperation of this raised structures 310 and vertical orientation film 312 with the scope of initial tilt angle of liquid crystal molecule that realizes the contiguous first substrates 31 of liquid crystal layer 33 for being more than or equal to 30 degree and being less than 90 degree.
In the present embodiment, as shown in figure 12, the liquid crystal molecule of this liquid crystal layer 33 contiguous these first substrates 31 tilts towards a direction under the effect of tilt angle, perpendicular to the direction of the hypotenuse of the right-angle triangle xsect of this raised structures 310.
Below be only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. can realize the liquid crystal indicator that switch at visual angle for one kind, comprise first substrate, and the second substrate that this first substrate is oppositely arranged and the liquid crystal layer between this first substrate and this second substrate, on this second substrate, be provided with pixel electrode and public electrode, it is characterized in that, liquid crystal molecule in this liquid crystal layer is negative liquid crystal molecule, this first substrate is provided with the first electrode on the surface of this liquid crystal layer, the scope of the initial tilt angle of the liquid crystal molecule of contiguous this first substrate of this liquid crystal layer is for being more than or equal to 30 degree and being less than 90 degree, the liquid crystal molecule of contiguous this second substrate of this liquid crystal layer is horizontal direction matching.
2. liquid crystal indicator according to claim 1, it is characterized in that, this first electrode is transparency electrode, and when this first electrode is provided bias voltage when forming vertical electric field between this first, second substrate, this liquid crystal indicator is wide viewing angle display mode; When this first electrode is not provided bias voltage, this liquid crystal indicator is narrow visual angle display mode.
3. liquid crystal indicator according to claim 2, is characterized in that, the polarity of this bias voltage is contrary with the polarity of this public electrode.
4. liquid crystal indicator according to claim 1, it is characterized in that, this first substrate is provided with alignment film on the surface of this liquid crystal layer, and this alignment film is to utilize the pi liquid of horizontal direction matching and the pi liquid of vertical orientation to mix according to a certain percentage the alignment film with nanostructured surface (nanostructured surfaces) forming after baking.
5. liquid crystal indicator according to claim 1, it is characterized in that, this first substrate is provided with a plurality of raised structures on the surface of this liquid crystal layer, the shape of cross section of each raised structures is isosceles triangle, the base of this isosceles triangle is arranged on this first substrate, the scope at the base angle of this isosceles triangle is for being greater than 0 degree and being less than or equal to 60 degree, and the plurality of raised structures is provided with vertical orientation film towards the surface of this liquid crystal layer.
6. liquid crystal indicator according to claim 1, it is characterized in that, this first substrate is provided with a plurality of raised structures on the surface of this liquid crystal layer, the shape of cross section of each raised structures is right-angle triangle, a right-angle side of this right-angle triangle is arranged on this first substrate, the hypotenuse of this right-angle triangle is with the scope of angle that is arranged on this right-angle side on this first substrate for being greater than 0 degree and being less than or equal to 60 degree, and the plurality of raised structures is provided with vertical orientation film towards the surface of this liquid crystal layer.
7. liquid crystal indicator according to claim 1, is characterized in that, the liquid crystal molecule of contiguous this first substrate of this liquid crystal layer tilts towards a direction under the effect of tilt angle.
8. liquid crystal indicator according to claim 1, is characterized in that, the liquid crystal molecule of contiguous this first substrate of this liquid crystal layer tilts towards both direction under the effect of tilt angle.
9. liquid crystal indicator according to claim 1, is characterized in that, the scope of the initial tilt angle of the liquid crystal molecule of contiguous this second substrate of this liquid crystal layer is for being more than or equal to 0 degree and being less than or equal to 5 degree.
10. liquid crystal indicator according to claim 9, is characterized in that, the initial tilt angle of the liquid crystal molecule of contiguous this second substrate of this liquid crystal layer is 2 degree.
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Cited By (16)
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| CN106293592A (en) * | 2016-07-20 | 2017-01-04 | 昆山龙腾光电有限公司 | A kind of method and system being automatically adjusted waveform biasing |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |