CN102879957B - Liquid crystal display panel and display device - Google Patents
Liquid crystal display panel and display device Download PDFInfo
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- CN102879957B CN102879957B CN201210348334.9A CN201210348334A CN102879957B CN 102879957 B CN102879957 B CN 102879957B CN 201210348334 A CN201210348334 A CN 201210348334A CN 102879957 B CN102879957 B CN 102879957B
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Abstract
The invention discloses a liquid crystal display panel and a display device, which relate to the field of design and manufacture of liquid crystal display panels and are used for lowering the driving voltage of the liquid crystal display panel. The liquid crystal display panel includes a first base plate and a second base plate formed in a buckling manner, and a liquid crystal manner arranged between the two base plates; the liquid crystal display panel further includes a first electrode structure arranged on the inner side of the first base plate and in a pixel region, and a second electrode structure arranged on the inner side of the second base plate and in the pixel region; the first electrode structure and the second electrode structure include pixel electrodes and common electrodes respectively; and under the condition of energization, both the first electrode structure and the second electrode structure generate transverse electric fields at least. The scheme provided by the invention is suitable for the production of the display device.
Description
Technical field
The present invention relates to the design and manufacture field of a kind of liquid crystal panel, display device, particularly relate to a kind of display panels and display device.
Background technology
In order to promote the display quality of liquid crystal display, realize higher contrast, faster response time and wider viewing visual angle, the blue phase liquid crystal material with rapid answer characteristic comes into one's own gradually.Indigo plant is a kind of a kind of liquid crystal phase between isotropic phase and cholesteric phase mutually, and its temperature range existed is very narrow, approximately only has the temperature range of 1 DEG C.But there is temperature range and can greatly widen in the blue phase liquid crystal of discovered in recent years after polymer-stabilized, substantially can meet the serviceability temperature scope as liquid crystal display material.
Blue phase liquid crystal display, as the ergastic display of future generation of most, has following characteristics: it is large that (1) blue phase liquid crystal display has angle of visibility, the feature that dark-state is good.(2) during the theoretical response of blue phase liquid crystal display, compole is short, can reach below Millisecond.(3) blue phase liquid crystal display does not need other the necessary oriented layer of various liquid crystal display, thus reduces manufacturing cost, simplifies manufacturing process.The electrode structure of blue phase liquid crystal display is roughly the same with the electrode structure of the liquid crystal display of existing horizontal component of electric field drive pattern.
But the driving voltage of existing blue phase liquid crystal display requires higher.In addition, for common liquid crystals, if driving voltage can be reduced, then also relatively power consumption can be reduced.Therefore, how to reduce driving voltage and just become a problem demanding prompt solution.
Summary of the invention
Embodiments of the invention provide a kind of display panels and display device, in order to reduce the driving voltage of display panels.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, embodiments provide a kind of display panels, comprise: the first substrate shaping to box and second substrate, and the liquid crystal layer be positioned between two substrates, described display panels also comprises: be positioned at inside described first substrate, the first electrode structure of pixel region, is positioned at inside described second substrate, the second electrode structure of pixel region; Described first electrode structure and described second electrode structure comprise pixel electrode and public electrode all separately, and described first electrode structure and described second electrode structure, when being energized, all at least produce transverse electric field.
Optionally, the described pixel electrode in described first electrode structure is electrically connected with the described pixel electrode in described second electrode structure, and the described public electrode in described first electrode structure is electrically connected with the described public electrode in described second electrode structure.
Optionally, described first electrode structure is corresponding with described second electrode structure.
Optionally, described liquid crystal layer is blue phase liquid crystal layer.
Optionally, above-mentioned display panels also comprises: be arranged on the first quarter-wave plate outside described first substrate, the 1/1st wave plate and the first polaroid; Be arranged on the second quarter-wave plate outside described second substrate, the 1/2nd wave plate and the second polaroid.
Optionally, described display panels is that single box is thick, and the pixel region of described display panels is divided into transmission area and echo area; In same pixel region, the electric field intensity sum that described first electrode structure and described second electrode structure produce in transmission area is greater than the electric field intensity sum produced in echo area, makes the transmission area of same pixel region, phase-delay quantity that the light of echo area is produced by described liquid crystal layer is identical.
Optionally, described first electrode structure or described second electrode structure comprise: the pixel electrode arranged with layer and public electrode; Wherein, described pixel electrode comprises multiple first strip shaped electric poles, and described public electrode comprises multiple second strip shaped electric poles, and described first strip shaped electric poles and described second strip electrode gap are arranged; And the spacing being positioned at the adjacent stripe-like electrode of described transmission area of same layer is less than the spacing of the adjacent stripe-like electrode being positioned at described echo area.
Optionally, described first electrode structure or described second electrode structure comprise: the internal layer electrode that different layer is arranged and outer electrode; Wherein, described internal layer electrode comprises multiple strip shaped electric poles, and described outer electrode is plate electrode; Or described internal layer electrode and outer electrode include multiple strip shaped electric poles; And the spacing being positioned at the adjacent stripe-like electrode of described transmission area of same layer is less than the spacing of the adjacent stripe-like electrode being positioned at described echo area.
Optionally, described first electrode structure or described second electrode structure comprise: the public electrode being positioned at described pixel region, the first pixel electrode being positioned at described transmission area and the second pixel electrode arranged with layer with described first pixel electrode being positioned at described echo area; Described public electrode comprises multiple strip shaped electric poles, and/or described first pixel electrode, described second pixel electrode comprise multiple strip shaped electric poles; The adjacent stripe-like electrode spacing being positioned at transmission area of same layer is identical with the adjacent stripe-like electrode spacing being positioned at echo area; In energising situation, apply different voltage respectively to the first pixel electrode, the second pixel electrode, make the voltage difference be positioned between the first pixel electrode of same pixel region and public electrode be greater than voltage difference between the second pixel electrode and public electrode.
Optionally, described public electrode, described first pixel electrode and described second pixel electrode arrange with layer and include multiple strip shaped electric poles; And the strip shaped electric poles that described first pixel electrode comprises and the strip shaped electric poles interval that the public electrode being positioned at described transmission area comprises are arranged, the strip shaped electric poles that described second pixel electrode comprises and the strip shaped electric poles interval that the public electrode being positioned at described echo area comprises are arranged.
Optionally, described public electrode and the different layer of described first pixel electrode are arranged, and wherein, the electrode being positioned at internal layer in described public electrode and described pixel electrode comprises multiple strip shaped electric poles, and being positioned at outer field electrode is plate electrode.
Another aspect, the embodiment of the present invention additionally provides a kind of display device, comprises above-mentioned arbitrary display panels.
The display panels that the embodiment of the present invention provides and display device, by the inner side at first substrate and second substrate, the first electrode structure and the second electrode structure are set respectively, further, the first electrode structure and the second electrode structure, when being energized, all at least produce transverse electric field; Owing to having set up electrode structure in display panels, like this, if need to reach the transmittance identical with prior art, just only need to apply less voltage to the pixel electrode in two electrode structures respectively, also just reduce the driving voltage of display panels.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation that Fig. 1 is a kind of display panels provided by the invention when not making alive;
Fig. 2 is the structural representation of the display panels shown in Fig. 1 when applying voltage;
Fig. 3 is the structural representation of dot structure in the display panels shown in Fig. 1;
The structural representation that Fig. 4 is another display panels provided by the invention when not making alive;
Fig. 5 is the structural representation of the display panels shown in Fig. 4 when applying voltage;
Fig. 6 is the structural representation of dot structure in the display panels shown in Fig. 4;
The structural representation that Fig. 7 is another display panels provided by the invention when not making alive;
Fig. 8 is the structural representation of the display panels shown in Fig. 7 when applying voltage;
Fig. 9 is the structural representation of dot structure in the display panels shown in Fig. 7;
The structural representation that Figure 10 is a kind of display panels provided by the invention when not making alive;
Figure 11 is the structural representation of the display panels shown in Figure 10 when applying voltage;
Figure 12 is the structural representation of dot structure in the display panels shown in Figure 10.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.
First, the several concepts related in the embodiment of the present invention are briefly introduced.
In multiple layers involved by all embodiments of the present invention, the layer relatively near liquid crystal layer is internal layer, and the layer relatively away from liquid crystal layer is outer.It should be noted that, in internal layer electrode and outer electrode which as public electrode, which as pixel electrode, relevant with its annexation.If internal layer (skin) electrode is connected with data line by switch element with data line, then internal layer (skin) electrode is as pixel electrode, if internal layer (skin) electrode is connected with public electrode wire, then internal layer (skin) electrode is as public electrode.
In all embodiments of the present invention, transmission area refers to the region that backlight penetrates through first substrate, liquid crystal layer and second substrate; Echo area refers to the region being provided with reflection horizon, in echo area, surround lighting through second substrate, liquid crystal layer to reflection horizon, after reflective layer reflects, then through liquid crystal layer, second substrate and penetrating.
In all embodiments of the present invention, arrange at least two kinds of patterns with layer; At least two kinds of patterns arrange with layer and refer to: same film is formed at least two kinds of patterns by patterning processes.Such as, the pixel electrode that arranges of above-mentioned same layer and public electrode refer to: the pixel electrode formed by patterning processes by same transparent conductive film and public electrode.Wherein, pixel electrode refers to the electrode be electrically connected with data line by switch element (such as, can be thin film transistor (TFT)), and public electrode refers to the electrode with public electrode wire electrical connection.
In all embodiments of the present invention, different layer is arranged also at least two kinds of patterns, and at least two kinds of different layers of pattern arrange and refer to, at least will form at least two kinds of patterns by patterning processes by double-layer films respectively.Two kinds of different layers of pattern are arranged and refers to, by patterning processes, respectively form a kind of pattern by double-layer films.Such as, the internal layer electrode that arranges of different layer and outer electrode refer to: form outer electrode by ground floor transparent conductive film by patterning processes, form internal layer electrode by second layer transparent conductive film by patterning processes.
With reference to figure 1-Figure 12, embodiments provide a kind of display panels, comprise: the first substrate 11 shaping to box and second substrate 12, and the liquid crystal layer 13 be positioned between two substrates, described display panels also comprises: be positioned at inside described first substrate, the first electrode structure 41 of pixel region, is positioned at inside described second substrate, the second electrode structure 42 of pixel region; Described first electrode structure 41 and described second electrode structure 42 comprise pixel electrode and public electrode all separately, and described first electrode structure 41 and described second electrode structure 42, when being energized, all at least produce transverse electric field.
Above-mentioned pixel region can refer to the region of light-permeable in dot structure.Example, first substrate 11 is array base palte in embodiments of the present invention, is also provided with grid line in the inner side of first substrate, and with the data line that grid line is arranged in a crossed manner, grid line and data line limit multiple pixel region; Second substrate 12 is color membrane substrates, and the inner side of second substrate is provided with black Matrix Pattern, and the R of array format (red), G (green), B (indigo plant) color lump; Wherein, black Matrix Pattern and grid line arranged in a crossed manner, data line are corresponding.Certainly, this is only an example, as other situations, such as, one of two substrates is provided with array circuit and color film simultaneously, another substrate does not then establish color film and array circuit.
Above-mentioned electrode structure comprises pixel electrode and public electrode.Wherein the first electrode structure comprises: be positioned at inside first substrate, all pixel electrodes of a pixel region and public electrode; Second electrode structure comprises: be positioned at inside second substrate, all pixel electrodes of a pixel region and public electrode.
The electrode structure that at least can produce transverse electric field can be that ADS is (also known as AD-SDS, Advanced-Super Dimensional Switching, senior super dimension field switch) electrode structure in type liquid crystal display, also can be the electrode structure in IPS (In Plane Switch switches in face) type liquid crystal display.Wherein, electrode structure in ADS type liquid crystal display comprises: different layer is arranged on pixel electrode inside a substrate and public electrode, usually be arranged on the electrode of internal layer with slit in both, and the upper-lower position of public electrode and pixel electrode can convert; Pixel electrode and public electrode can produce the multi-dimensional electric field comprising transverse electric field and longitudinal electric field.Electrode structure in IPS type liquid crystal display comprises: the pixel electrode arranged with layer and public electrode, pixel electrode comprises multiple strip shaped electric poles, public electrode also comprises multiple strip shaped electric poles, and the strip shaped electric poles that pixel electrode comprises and the strip shaped electric poles interval that public electrode comprises are arranged; Pixel electrode and public electrode can produce transverse electric field.
Need the display panels utilizing transverse electric field to drive in prior art, the electrode structure that can produce transverse electric field is just set on array base palte; And the embodiment of the present invention by all arranging the electrode structure that at least can produce transverse electric field on color membrane substrates and array base palte, make needing under the prerequisite reaching the transmittance identical with prior art, only need to apply less voltage to the pixel electrode in two electrode structures respectively, also just reduce the driving voltage of display panels.
Preferably, the first electrode structure in above-mentioned display panels and the second electrode structure correspondence, in other words, the pixel electrode in the first electrode structure is corresponding with the pixel electrode in the second electrode structure, and the public electrode in the first electrode structure is corresponding with the public electrode in the second electrode structure.The implication that two patterns are corresponding refers to, from the angle looking up (or overlooking), two patterns have at least a part to overlap.For making the electrode structure of this correspondence, the best is that both types are identical, example, and the first electrode structure 41, second electrode structure 42 all adopts the electrode structure in ADS type liquid crystal display; Or, all adopt the electrode structure in IPS type liquid crystal display.Certainly, both are also fine at difference, example, and the first electrode structure 41 adopts the electrode structure in ADS type liquid crystal display, and the second electrode structure 42 adopts the electrode structure in IPS type liquid crystal display.
It should be noted that, owing to having set up the second electrode structure 42 on the second substrate (color membrane substrates) 12 of above-mentioned display panels, so need to solve the problem powered up to the second electrode structure of color membrane substrates.
Optionally, can adopt and identical with array base palte power up mode, namely being that pixel electrode in the second electrode structure powers up by setting up data line, grid line and switch element on color membrane substrates, is that public electrode in the second electrode structure powers up by setting up public electrode wire on color membrane substrates.Optionally, can also set up data line, grid line and switch element on color membrane substrates is that pixel electrode in the second electrode structure powers up, and is connected by the public electrode in the second electrode structure by conducting resinl with the public electrode wire be arranged on array base palte or public electrode.Optionally, can also be that public electrode in the second electrode structure powers up by setting up public electrode wire on color membrane substrates, and by conducting resinl, the pixel electrode in the second electrode structure is connected with the pixel electrode be arranged on array base palte.
In embodiments of the present invention, preferably, the pixel electrode in the first electrode structure 41 is electrically connected with the pixel electrode in the second electrode structure 42, and the public electrode in the first electrode structure 41 is electrically connected with the public electrode in the second electrode structure 42.Like this, just without the need to additionally for color membrane substrates sets up driving circuit.
At present, can be had multiple by the liquid crystal that transverse electric field drives, due to the advantage of blue phase liquid crystal, described liquid crystal layer 13 is preferably blue phase liquid crystal layer in embodiments of the present invention.Also all for blue phase liquid crystal in institute's drawings attached.
Include blue phase liquid crystal molecule in above-mentioned blue phase liquid crystal layer, its characteristic is: when not applying voltage, and blue phase liquid crystal molecule has isotropic characteristics; When applying voltage, blue phase liquid crystal molecule then has birefringent characteristic along a direction, and blue phase liquid crystal molecule is along the direction orientation of electric field.Due to this characteristic of above-mentioned blue phase liquid crystal layer, so the horizontal component of electric field utilizing pixel electrode and public electrode to produce in embodiments of the present invention drives display panels.
Further, above-mentioned display panels also comprises: be arranged on the first quarter-wave plate the 23, the 1/1st wave plate 22 and the first polaroid 21 outside described first substrate; Be arranged on the second quarter-wave plate the 24, the 1/2nd wave plate 25 and the second polaroid 26 outside described second substrate.
Example, outside described first substrate, be disposed with the first quarter-wave plate the 23, the 1/1st wave plate 22 and the first polaroid 21 from the inside to the outside; Outside described second substrate, be disposed with the second quarter-wave plate the 24, the 1/2nd wave plate 25 and the second polaroid 26 from the inside to the outside.
Liquid crystal display can be divided into transmission-type, reflective and Transflective three types.Although all to be applied to the display panels of semi-transmission semi-reflection LCD in institute's drawings attached, it should be noted that the above-mentioned display panels provided can be applied in the liquid crystal display of any one type.
Below, the embodiment of the present invention is described in further detail for the display panels be applied in semi-transmission semi-reflection LCD.
As shown in Fig. 1-Figure 12, in order to simplified manufacturing technique, the display panels be applied in semi-transmission semi-reflection LCD provided by the invention is that single box is thick; And the pixel region of described display panels is divided into transmission area and echo area; In same pixel region, the electric field intensity sum that described first electrode structure 41 and described second electrode structure 42 produce in transmission area is greater than the electric field intensity sum produced in echo area, makes the transmission area of same pixel region, phase-delay quantity that the light of echo area is produced by described liquid crystal layer 13 is identical.Like this, the function that semi-transmission semi-reflection LCD could realize normal display can be realized.It should be noted that all diagrams should as the restriction of echo area and transmission area shape or size, diagram is only reference.
In order to the phase-delay quantity making the transmission area of same pixel region, the light of echo area is produced by described liquid crystal layer 13 is identical, the liquid crystal molecule of transmission area is so just needed to produce larger phase delay, the liquid crystal molecule of echo area produces less phase delay, the phase delay that can produce due to electric field intensity and liquid crystal molecule is positive dirction proportionate relationship, so in energising situation, need to make the transmission area of same pixel region produce stronger electric field intensity, echo area produces more weak electric field intensity.
No matter be for the first electrode structure or for the second electrode structure, the factor affecting electric field intensity mainly contains the spacing that two: is adjacent stripe-like electrode, and two is the voltage differences between pixel electrode and public electrode.Display panels shown in Fig. 1, Fig. 2, Fig. 7, Fig. 8, a pixel electrode is only had in a pixel region, so two interelectrode voltage differences are identical in transmission area and echo area, putting before this, same layer is positioned at and the spacing of different adjacent stripe-like electrode, to produce different electric field intensity by arranging in transmission area and echo area.Display panels shown in Fig. 4, Fig. 5, Figure 10, Figure 12, arrange with echo area in transmission area and be positioned at same layer and the spacing of identical adjacent stripe-like electrode, putting before this, by applying different voltage to the first pixel electrode and the second pixel electrode, make the voltage difference between transmission area with two electrodes (pixel electrode and public electrode) in echo area different, to produce different electric field intensity.
In the echo area of above-mentioned display panels, the inner side of described first substrate is also provided with reflection horizon 31; And insulation course 32 is provided with on described reflection horizon 31, described insulation course 32 extends described transmission area and echo area simultaneously.It should be noted that diagram should as the restriction of echo area and transmission area shape or size, diagram is only reference, and the size of the first pixel electrode and the second pixel electrode can be set to identical, also can be set to difference.
Below, four kinds of electrode structures are embodiments provided.First two only arranges a pixel electrode in a pixel region, is powered up by this pixel electrode of data alignment; Latter two is provided with two pixel electrodes in a pixel region, is powered up respectively to two pixel electrodes by two data lines.
The first application be electrode structure in IPS type liquid crystal display, with reference to figure 1-Fig. 3, described first electrode structure 41 in above-mentioned display panels or described second electrode structure 42 comprise: with pixel electrode 304 and the public electrode 305 of layer setting; Wherein, described pixel electrode 304 comprises multiple first strip shaped electric poles, and described public electrode 305 comprises multiple second strip shaped electric poles, and described first strip shaped electric poles and described second strip electrode gap are arranged; And the spacing d1 being positioned at the adjacent stripe-like electrode of described transmission area of same layer is less than the spacing d2 of the adjacent stripe-like electrode being positioned at described echo area.
Below with reference to Fig. 3, describe in detail for the dot structure be arranged on inside first substrate.Also be provided with thin film transistor (TFT) in described pixel region, wherein, grid 303a, source electrode 303b and the drain electrode 303c of thin film transistor (TFT) are electrically connected described grid line 300, described data line 301 and pixel electrode 304 respectively.Public electrode 305 is connected with public electrode wire (not shown).Like this in energising situation, data line 301 can apply voltage by thin film transistor (TFT) 303 to pixel electrode 304, public electrode 305 provides voltage by public electrode wire, makes to produce horizontal component of electric field between pixel electrode 304 and public electrode 305, to drive display panels.
In conjunction with the above-mentioned explanation about how to power up to the second electrode structure 42 be arranged on inside second substrate 12, can be clear and definite, optionally, inside second substrate, the driving circuit identical with inside first substrate can be set, power up to give the second electrode structure 42; But preferred, be utilize conducting resinl to be electrically connected, the electrode of same kind in the first electrode structure and the second electrode structure so just without the need to setting up driving circuit on second substrate.
The second application be electrode structure in ADS type liquid crystal display, with reference to figure 7-Fig. 9, described first electrode structure 41 or described second electrode structure 42 comprise: the internal layer electrode of different layer setting and outer electrode.
Wherein optional, described internal layer electrode comprises multiple strip shaped electric poles, and described outer electrode is plate electrode.Now, internal layer electrode be positioned at transmission area adjacent stripe-like electrode between spacing d1 be less than the spacing d2 of the adjacent stripe-like electrode being positioned at echo area; Namely the spacing being positioned at the adjacent stripe-like electrode of described transmission area of same layer is less than the spacing of the adjacent stripe-like electrode being positioned at described echo area.
Or optional, described internal layer electrode and outer electrode include multiple strip shaped electric poles, and from planimetric map, the strip shaped electric poles of internal layer electrode and the strip shaped electric poles interval of outer electrode are arranged.This liquid crystal panel although not shown, but the structure of this liquid crystal panel of those skilled in the art's easy understand.Now, spacing between the adjacent stripe-like electrode that internal layer electrode is positioned at transmission area is less than the spacing of the adjacent stripe-like electrode being positioned at echo area, further, outer electrode be positioned at transmission area adjacent stripe-like electrode between spacing be also less than the spacing of the adjacent stripe-like electrode being positioned at echo area; Namely the spacing being positioned at the adjacent stripe-like electrode of described transmission area of same layer is less than the spacing of the adjacent stripe-like electrode being positioned at described echo area.
Below with reference to Fig. 9, describe in detail for the dot structure be arranged on inside first substrate.Also be provided with thin film transistor (TFT) in described pixel region, wherein, grid 303a, source electrode 303b and the drain electrode 303c of thin film transistor (TFT) are electrically connected described grid line 300, described data line 301 and pixel electrode 304 respectively.Public electrode 305 is connected with public electrode wire (not shown).Like this in energising situation, data line 301 can apply voltage by thin film transistor (TFT) 303 to pixel electrode 304, public electrode alignment public electrode 305 provides voltage, makes to produce electric field between pixel electrode 304 and public electrode 305, to drive display panels.
In conjunction with the above-mentioned explanation about how to power up to the second electrode structure 42 be arranged on inside second substrate 12, can be clear and definite, optionally, inside second substrate, the driving circuit identical with inside first substrate can be set, power up to give the second electrode structure 42; But preferred, be utilize conducting resinl to be electrically connected, the electrode of same kind in the first electrode structure and the second electrode structure so just without the need to setting up driving circuit on second substrate.
It should be noted that, include in the display panels of first two electrode structure in above-mentioned introduction, the first electrode structure can be identical with the second electrode structure, also can be different.Be preferably in embodiments of the present invention, in a display panels, the first electrode structure and the second electrode structure all adopt the electrode structure of IPS escope, or all adopt the electrode structure of ADS escope; Preferred further, in the first electrode structure, the adjacent stripes spacing of same layer is consistent in the same area (echo area or transmission area) with the adjacent stripes spacing of same layer in the second electrode structure; Further preferred, the first electrode structure and the second electrode structure, about the mid-plane symmetry of liquid crystal layer, like this, can not affect the light transmission rate of described display while reducing driving voltage.
In the first two electrode structure of above-mentioned introduction, the spacing that same layer is positioned at the adjacent stripe-like electrode of described transmission area must be less than the spacing of the adjacent stripe-like electrode being positioned at described echo area, the determination of both proportionate relationships and character (as: the birefraction character of blue phase liquid crystal, dielectric anisotropy character, Cole's constant etc.) relevant.Specifically can according to following method of testing for the panel comprising specific a kind of blue phase liquid crystal, determine the proportionate relationship of two spacing: first, different test panels is manufactured according to the several spacing ratios preset, and, all fill above-mentioned specific a kind of blue phase liquid crystal in these test panels.Secondly, draw the transmission area of these test panels and V-T (voltage-transmitance) curve characteristic of echo area, if the transmission area of a test panel is consistent in error range with the curve characteristic of echo area, then illustrate that the phase delay of transmission area is roughly 2 times of the phase delay of echo area, so the proportionate relationship of this test panel just can as the reference value in actual production.In embodiments of the present invention restriction is not added to above-mentioned ratio, and be as the criterion so that the phase-delay quantity that the transmission area of same pixel region, the light of echo area can be made in actual production to be produced by described blue phase liquid crystal layer is identical.
Below, how to realize semi-transparent semi-reflecting display for the display panels in the above-mentioned IPS escope provided to describe in detail.
Fig. 1 is the structural representation of display panels when not powering up.During due to not making alive, blue phase liquid crystal molecule in liquid crystal layer is isotropic, and the light of transmission area and echo area can not produce phase-delay quantity through isotropic liquid crystal layer 13, if the polarization direction of the first polaroid 21 and the second polaroid 26 is 90 degree of angles, emergent ray can be blocked completely by the second polaroid 26, thus realizes the display of dark-state.
Fig. 2 is the structural representation of display panels when powering up.Blue phase liquid crystal molecule is under horizontal component of electric field effect, produce the phase delay of horizontal direction, no matter for the first electrode structure or the second electrode structure, the spacing d1 being positioned at the adjacent stripe-like electrode of transmission area is different from the spacing d2 of the adjacent stripe-like electrode being positioned at echo area, and d1 < d2.Because the spacing d1 of the adjacent stripe-like electrode being positioned at transmission area is less, by producing stronger electric field intensity, so blue phase liquid crystal molecule can produce larger phase delay delta n1 under stronger electric field action.Otherwise, because the spacing d2 being positioned at the adjacent stripe-like electrode of echo area is comparatively large, by producing more weak electric field intensity, so blue phase liquid crystal molecule can produce less phase delay delta n2 under more weak electric field action.Due to the reflex in reflection horizon 31, the light of echo area can pass twice through liquid crystal layer, so the light of the echo area light that is about transmission area through the propagation distance D2 of liquid crystal layer is through 2 times of propagation distance D1 of liquid crystal layer, i.e. and general D2=2*D1; So, can by optimizing the spacing d1 and the d2 that are positioned at the adjacent stripe-like electrode of transmission area and echo area, make the transmission area of same pixel region, phase-delay quantity that the light of echo area is produced by described liquid crystal layer is identical, be Δ n1*D1=Δ n2*D2, to reach the thick semi-transparent semi-reflecting display effect of single box.
How to realize semi-transparent semi-reflecting display for the display panels in the above-mentioned ADS escope provided with reference to above-mentioned principle, not add at this and repeat.
Provided by the invention comprise above-mentioned the first, the transflective liquid crystal display panel of the second electrode structure, this display panels is that single box is thick, and by the spacing of the adjacent stripe-like electrode being positioned at transmission area being less than the spacing of the adjacent stripe-like electrode being positioned at echo area; Make transmission area identical with the phase-delay quantity that the light of echo area is produced by described blue phase liquid crystal layer, thus realize the Presentation Function of the thick transflective liquid crystal display panel of single box; Be the structure that single box is thick due to what adopt in the present invention, therefore the difficulty of manufacture craft can be simplified.
The third application be electrode structure in IPS type liquid crystal display, with reference to figure 4-Fig. 6, described first electrode structure 41 or described second electrode structure 42 comprise: the public electrode 607 being positioned at described pixel region, the first pixel electrode 605 being positioned at described transmission area and the second pixel electrode 606 arranged with layer with described first pixel electrode being positioned at described echo area; Described public electrode 607 comprises multiple strip shaped electric poles, and/or described first pixel electrode 605, described second pixel electrode 606 comprise multiple strip shaped electric poles.
Wherein, described public electrode comprises multiple strip shaped electric poles, and/or described first pixel electrode, described second pixel electrode comprise multiple strip shaped electric poles; Comprise: described public electrode 607, described first pixel electrode 605 and described second pixel electrode 606 arrange with layer and include multiple strip shaped electric poles; And the strip shaped electric poles that described first pixel electrode 605 comprises and the strip shaped electric poles interval that the public electrode 607 being positioned at described transmission area comprises are arranged, the strip shaped electric poles that described second pixel electrode 606 comprises and the strip shaped electric poles interval that the public electrode 607 being positioned at described echo area comprises are arranged.
In this kind of electrode structure, the adjacent stripe-like electrode spacing d1 being positioned at transmission area of same layer is identical with the adjacent stripe-like electrode spacing d2 being positioned at echo area; In energising situation, apply different voltage respectively to the first pixel electrode 605, second pixel electrode 606, make the voltage difference be positioned between the first pixel electrode of same pixel region and public electrode be greater than voltage between the second pixel electrode and public electrode.
Below with reference to Fig. 6, describe in detail for the dot structure be arranged on inside first substrate in above-mentioned liquid crystal panel.Above-mentioned display panels also comprises: the first film transistor 603 and the second thin film transistor (TFT) 604 that are positioned at described pixel region; The first voltage is applied by described the first film transistor 603 to described first pixel electrode 605 by the first data line 601, apply second voltage by described second thin film transistor (TFT) 604 to described second pixel electrode 606 by the second data line 602, and the first voltage and the second voltage unequal.
Concrete, grid 603a, source electrode 603b and the drain electrode 603c of described the first film transistor are electrically connected described grid line 600, described first data line 601 and described first pixel electrode 605 respectively, and grid 604a, source electrode 604b and the drain electrode 604c of described second thin film transistor (TFT) are electrically connected described grid line 600, described second data line 602 and described second pixel electrode 606 respectively.Like this in energising situation, the first data line 601 can apply the first voltage to the first pixel electrode 605, and the second data line 602 can apply the second voltage to the second pixel electrode 606.Preferably, described first data line 601 and described second data line 602 are placed in the both sides of described pixel region.
In conjunction with the above-mentioned explanation about how to power up to the second electrode structure 42 be arranged on inside second substrate 12, can be clear and definite, optionally, inside second substrate, the driving circuit identical with inside first substrate can be set, power up to give the second electrode structure 42; But preferred, be utilize conducting resinl to be electrically connected, the electrode of same kind in the first electrode structure and the second electrode structure so just without the need to setting up driving circuit on second substrate.
4th kind of application be electrode structure in ADS type liquid crystal display, with reference to figure 10-Figure 12, described first electrode structure 41 or described second electrode structure 42 comprise: the public electrode 607 being positioned at described pixel region, the first pixel electrode 605 being positioned at described transmission area and the second pixel electrode 606 arranged with layer with described first pixel electrode being positioned at described echo area; Described public electrode comprises multiple strip shaped electric poles, and/or described first pixel electrode, described second pixel electrode comprise multiple strip shaped electric poles.
Wherein, described public electrode comprises multiple strip shaped electric poles, and/or described first pixel electrode, described second pixel electrode comprise multiple strip shaped electric poles; Comprise: described public electrode 607 and the different layer of described first pixel electrode 605 are arranged; That is, the first pixel electrode 605 and the second pixel electrode 606 are arranged with layer, and these two electrodes 605,606 and the different layer of public electrode are arranged.
Optionally, the electrode being positioned at internal layer in described public electrode 607 and described pixel electrode (comprising: the first pixel electrode 605, second pixel electrode 606) comprises multiple strip shaped electric poles, and being positioned at outer field electrode is plate electrode.Be positioned at internal layer with pixel electrode 605,606 in figure, it is example that public electrode 607 is positioned at outer, and certainly, also can be positioned at internal layer by public electrode, pixel electrode is positioned at skin.
Or optional, described public electrode and described pixel electrode (comprising: the first pixel electrode, the second pixel electrode) include multiple strip shaped electric poles.This liquid crystal panel there is no with reference to accompanying drawing, but the structure of this liquid crystal panel of determination that those skilled in the art can be beyond all doubt with reference to figure 10-Figure 12.In this liquid crystal panel, the adjacent stripe-like electrode spacing of the first pixel electrode is identical with the adjacent stripe-like electrode spacing of the second pixel electrode, further, to be positioned at the spacing of the adjacent stripe-like electrode of transmission area identical with the adjacent stripe-like electrode spacing being positioned at echo area for public electrode.
In the 4th kind of electrode structure, the adjacent stripe-like electrode spacing d1 being positioned at transmission area of same layer is identical with the adjacent stripe-like electrode spacing d2 being positioned at echo area; In energising situation, apply different voltage respectively to the first pixel electrode 605, second pixel electrode 606, make the voltage difference be positioned between the first pixel electrode 605 of same pixel region and public electrode 607 be greater than voltage difference between the second pixel electrode 606 and public electrode 607.
Dot structure shown in Figure 12 is identical with the annexation of the dot structure shown in Fig. 6, does not add repeat at this.Unlike, the adjacent stripe-like electrode spacing being positioned at the first pixel electrode of transmission area in Figure 12 is identical with the adjacent stripe-like electrode spacing of the second pixel electrode being positioned at echo area.
Further preferred, described first data line 601 and described second data line 602 are placed in the both sides of described pixel region.
In conjunction with the above-mentioned explanation about how to power up to the second electrode structure 42 be arranged on inside second substrate 12, can be clear and definite, optionally, inside second substrate, the driving circuit identical with inside first substrate can be set, power up to give the second electrode structure 42; But preferred, be utilize conducting resinl to be electrically connected, the electrode of same kind in the first electrode structure and the second electrode structure so just without the need to setting up driving circuit on second substrate.
It should be noted that, include in the display panels of latter two electrode structure in above-mentioned introduction, the first electrode structure can be identical with the second electrode structure, also can be different.Be preferably in embodiments of the present invention, in a display panels, the first electrode structure and the second electrode structure all adopt the electrode structure of IPS escope, or all adopt the electrode structure of ADS escope; Preferred further, the adjacent stripes spacing of same layer in the adjacent stripes spacing of same layer and the second electrode structure in first electrode structure, consistent in the same area (echo area or transmission area), and it is identical with the voltage being applied to each electrode corresponding in the second electrode structure to be applied to each electrode in the first electrode structure (the first pixel electrode, the second pixel electrode and public electrode); Further preferred, the first electrode structure and the second electrode structure, about the mid-plane symmetry of liquid crystal layer, like this, can not affect the light transmission rate of described display while reducing driving voltage.
In the latter two electrode structure of above-mentioned introduction, in energising situation, different voltage is applied respectively to the first pixel electrode, the second pixel electrode by the first data line, the second data line, as for the determination of magnitude of voltage and character (as: the birefraction character of blue phase liquid crystal that are applied to two pixel electrodes, dielectric anisotropy character, Cole's constant etc.) relevant.Specifically according to following method of testing for the panel comprising specific a kind of blue phase liquid crystal, the proportionate relationship of two magnitudes of voltage can be determined: first, according to manufacturing test panel in advance, in this test panel, fill above-mentioned specific a kind of blue phase liquid crystal.Secondly, voltage is applied to the first pixel electrode of transmission area by the first data line, voltage is applied to the second pixel electrode of echo area by the second data line, draw the transmission area of this test panel and V-T (voltage-transmitance) curve characteristic of echo area respectively, analyze the curve characteristic in two regions, and obtain the magnitude of voltage of first, second data line corresponding to the consistent position of each transmitance successively.In embodiments of the present invention restriction is not added to the above-mentioned magnitude of voltage being applied to two pixel electrodes, be as the criterion so that the phase-delay quantity that the transmission area of same pixel region and the light of echo area can be made in actual production to be produced by described blue phase liquid crystal layer is identical; But the voltage difference be positioned between the first pixel electrode of same pixel region and public electrode must be greater than the voltage difference between the second pixel electrode and public electrode, so just provide condition for transmission area is identical with the phase-delay quantity of echo area.
Below, how to realize semi-transparent semi-reflecting display for the display panels in the above-mentioned IPS escope provided to describe in detail.
Fig. 4 is the structural representation of display panels when not powering up.During due to not making alive, blue phase liquid crystal molecule in liquid crystal layer is isotropic, and the light of transmission area and echo area can not produce phase-delay quantity through isotropic blue phase liquid crystal layer, if the polarization direction of the first polaroid 21 and the second polaroid 26 is 90 degree of angles, emergent ray can be blocked completely by the second polaroid, thus realizes the display of dark-state.
Fig. 5 is the structural representation of display panels when powering up.Blue phase liquid crystal molecule is under horizontal component of electric field effect, produce the phase delay of horizontal direction, the spacing d1 being positioned at the adjacent stripe-like electrode of transmission area is identical with the spacing d2 of the adjacent stripe-like electrode being positioned at echo area, and d1=d2, thus now without the need to considering the impact of the spacing of the adjacent stripe-like electrode of transmission area and echo area on produced horizontal component of electric field, but make use of and be applied to the first pixel electrode of being positioned at transmission area and be applied to the different voltages of the second pixel electrode being positioned at echo area to the impact of electric field.By applying different voltage to the first pixel electrode, the second pixel electrode, the voltage difference be positioned between the first pixel electrode of same pixel region and public electrode is made to be greater than voltage difference between the second pixel electrode and public electrode, because larger the produced electric field of voltage difference is stronger, so transmission area will produce stronger electric field intensity, blue phase liquid crystal molecule can produce larger phase delay delta n1 under stronger electric field action, and echo area will produce more weak electric field intensity, blue phase liquid crystal molecule can produce less phase delay delta n2 under more weak electric field action.Due to the existence in reflection horizon 31, the light of echo area can pass twice through liquid crystal layer, so the light of the echo area light that is about transmission area through the propagation distance D2 of blue phase liquid crystal layer is through 2 times of propagation distance D1 of blue phase liquid crystal layer, i.e. and general D2=2*D1; So, can by applying different voltage to the first pixel electrode and the second pixel electrode, the transmission area of same pixel region can be made, phase-delay quantity that the light of echo area is produced by described blue phase liquid crystal layer is identical, be Δ n1*D1=Δ n2*D2, to reach semi-transparent semi-reflecting display effect.
How to realize semi-transparent semi-reflecting display for the display panels in the above-mentioned ADS escope provided with reference to above-mentioned principle, not add at this and repeat.
Provided by the invention comprise above-mentioned the third, 4th kind of transflective liquid crystal display panel, this display panels is that single box is thick, by the spacing of the adjacent stripe-like electrode being positioned at transmission area being equaled the spacing of the adjacent stripe-like electrode of echo area, and the voltage difference be positioned between the first pixel electrode of same pixel region and public electrode is greater than the voltage difference between the second pixel electrode and public electrode when being energized, make transmission area identical with the phase-delay quantity that the light of echo area is produced by described blue phase liquid crystal layer, thus realize the Presentation Function of the thick transflective liquid crystal display panel of single box, be the structure that single box is thick due to what adopt in the present invention, therefore the difficulty of manufacture craft can be simplified.
It should be noted that, provide in each accompanying drawing only as preferred version of the present invention, in fact, first electrode structure can be any one in above-mentioned four kinds, second electrode structure also can be any one in above-mentioned four kinds, and two electrode structures can be the same or different.
In addition; it should be noted that; for clearly describing the claimed structure of the present invention; therefore do to simplify or omit in each embodiment and accompanying drawing with the incoherent structure of the present invention and process; and to do the structure simplifying or omit process in each embodiment and accompanying drawing be all those skilled in the art holds facile not making under creative work prerequisite, therefore do not add at the present embodiment and repeat.
The present embodiment also provides a kind of display device, and it comprises any one display panels above-mentioned, and described display device can be product or the parts that liquid crystal display, LCD TV, digital album (digital photo frame), mobile phone, panel computer etc. have any Presentation Function.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. a display panels, comprise: the first substrate shaping to box and second substrate, and the liquid crystal layer be positioned between two substrates, it is characterized in that, described display panels also comprises: be positioned at inside described first substrate, the first electrode structure of pixel region, is positioned at inside described second substrate, the second electrode structure of pixel region; Described first electrode structure and described second electrode structure comprise pixel electrode and public electrode all separately, and described first electrode structure and described second electrode structure, when being energized, all at least produce transverse electric field;
Described display panels is that single box is thick, and the pixel region of described display panels is divided into transmission area and echo area; In same pixel region, the electric field intensity sum that described first electrode structure and described second electrode structure produce in transmission area is greater than the electric field intensity sum produced in echo area, makes the transmission area of same pixel region, phase-delay quantity that the light of echo area is produced by described liquid crystal layer is identical;
Described first electrode structure or described second electrode structure comprise: the public electrode being positioned at described pixel region, the first pixel electrode being positioned at described transmission area and the second pixel electrode arranged with layer with described first pixel electrode being positioned at described echo area;
Described public electrode comprises multiple strip shaped electric poles, and/or described first pixel electrode, described second pixel electrode comprise multiple strip shaped electric poles; The adjacent stripe-like electrode spacing being positioned at transmission area of same layer is identical with the adjacent stripe-like electrode spacing being positioned at echo area;
In energising situation, apply different voltage respectively to the first pixel electrode, the second pixel electrode, make the voltage difference be positioned between the first pixel electrode of same pixel region and public electrode be greater than voltage difference between the second pixel electrode and public electrode.
2. display panels according to claim 1, it is characterized in that, described pixel electrode in described first electrode structure is electrically connected with the described pixel electrode in described second electrode structure, and the described public electrode in described first electrode structure is electrically connected with the described public electrode in described second electrode structure.
3. display panels according to claim 1, is characterized in that, described first electrode structure is corresponding with described second electrode structure.
4. display panels according to claim 1, is characterized in that, described liquid crystal layer is blue phase liquid crystal layer.
5. display panels according to claim 1, is characterized in that, also comprises: be arranged on the first quarter-wave plate outside described first substrate, the 1/1st wave plate and the first polaroid; Be arranged on the second quarter-wave plate outside described second substrate, the 1/2nd wave plate and the second polaroid.
6. the display panels according to any one of claim 1-5, is characterized in that, described public electrode, described first pixel electrode and described second pixel electrode arrange with layer and include multiple strip shaped electric poles; And the strip shaped electric poles that described first pixel electrode comprises and the strip shaped electric poles interval that the public electrode being positioned at described transmission area comprises are arranged, the strip shaped electric poles that described second pixel electrode comprises and the strip shaped electric poles interval that the public electrode being positioned at described echo area comprises are arranged.
7. the display panels according to any one of claim 1-5, is characterized in that,
Described public electrode and the different layer of described first pixel electrode are arranged, and wherein, the electrode being positioned at internal layer in described public electrode and described pixel electrode comprises multiple strip shaped electric poles, and being positioned at outer field electrode is plate electrode.
8. a display device, is characterized in that, comprises the display panels described in any one of claim 1-7.
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| CN103197475A (en) * | 2013-03-29 | 2013-07-10 | 京东方科技集团股份有限公司 | Transflective liquid crystal display panel and liquid crystal display device |
| CN103472636A (en) * | 2013-09-06 | 2013-12-25 | 京东方科技集团股份有限公司 | Liquid crystal display panel, driving method thereof and display device |
| CN103969896B (en) * | 2014-04-14 | 2016-02-10 | 京东方科技集团股份有限公司 | A kind of flexible display panels and flexible display |
| CN104020616B (en) * | 2014-06-04 | 2016-08-24 | 京东方科技集团股份有限公司 | Transmitting/reflecting LCD and driving method thereof |
| CN105511174A (en) * | 2016-01-05 | 2016-04-20 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and display device |
| TWI591403B (en) * | 2016-05-20 | 2017-07-11 | 友達光電股份有限公司 | Liquid crystal display panel |
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