CN102955304A - Liquid crystal display panel and display device - Google Patents
Liquid crystal display panel and display device Download PDFInfo
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- CN102955304A CN102955304A CN2012104454983A CN201210445498A CN102955304A CN 102955304 A CN102955304 A CN 102955304A CN 2012104454983 A CN2012104454983 A CN 2012104454983A CN 201210445498 A CN201210445498 A CN 201210445498A CN 102955304 A CN102955304 A CN 102955304A
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Abstract
The embodiment of the invention provides a liquid crystal display panel and a display device, relating to the technical field of display. A transmitting-reflecting liquid crystal display panel with the same thickness as a single box is provided, and a process is simplified. The liquid crystal display panel comprises a first substrate and a second substrate which are arranged in an opposite way, a liquid crystal layer is arranged between the first substrate and the second substrate, wherein the first substrate comprises a plurality of pixel areas divided by gate lines and data lines crossing in the transverse direction and the longitudinal direction, every pixel area comprises a transmitting area and a reflecting area, the first substrate is provided with a pixel electrode layer, and the pixel electrode layer comprises first pixel electrodes arranged in a planar shape in the transmitting area and second pixel electrodes arranged at intervals in a strip shape in the reflecting area. The thickness of the liquid crystal display panel is the same as the thickness of the single box, and the phase delay of light transmitted by the transmitting area is matched with the phase delay of light reflected by the reflecting area. The liquid crystal display panel provided by the embodiment of the invention can be applied in manufacturing of a liquid crystal display.
Description
Technical field
The present invention relates to the display technique field, relate in particular to a kind of display panels and display device.
Background technology
Thin Film Transistor-LCD (Thin Film Transistor-Liquid CrystalDisplay, TFT-LCD) have the characteristics such as volume is little, low in energy consumption, radiationless, manufacturing cost is relatively low, occupied leading position in current flat panel display market.
Because liquid crystal display device is not self light emitting, so liquid crystal display need to show by light source usually.According to the difference of liquid crystal display employing light source type, liquid crystal display in the market mainly can be divided into transmission-type, reflective and Transflective three major types.Wherein, each pixel cell zone of transflective liquid crystal display comprises again transmission area and echo area two parts usually, the light that backlight sends can pass through the transmission area outgoing, the light of external environment then can be reflected district's reflection, a kind of like this transflective liquid crystal display of structure has the advantage of transmission-type and reflective liquid-crystal display concurrently, can in the situation of bright and clear and insufficient light, use simultaneously, so transflective liquid crystal display is widely used in Portable mobile electronic device.
But the weak point of transflective liquid crystal display is, the light of transmission area outgoing is only through a layer of liquid crystal molecule, the light of echo area outgoing has then passed through layer of liquid crystal molecule twice, the light path of echo area is the twice of transmission area light path, because there are optical path difference in transmission area and echo area, light phase-delay quantity through transmission area and echo area outgoing does not mate, thus the display effect of having a strong impact on.For the phase-delay quantity that guarantees transmission area and echo area consistent, existing transflective liquid crystal display adopts the structure of dual-box thick usually, realize that by the light path that changes transmission area or echo area the phase-delay quantity of transmission area and echo area is consistent, but the liquid crystal display of a kind of like this dual-box thick structure of making will increase technology difficulty greatly.
Summary of the invention
Embodiments of the invention provide a kind of display panels and display device, can provide single box thick Transflective display panels, simplify the difficulty of technique.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The one side of the embodiment of the invention, a kind of display panels is provided, comprise: the first substrate that is oppositely arranged and second substrate, be liquid crystal layer between described first substrate and the described second substrate, described first substrate comprises a plurality of pixel regions that marked off by the grid line of transverse and longitudinal intersection and data line, each described pixel region comprises transmission area and echo area, also comprises:
Described first substrate has pixel electrode layer, and described pixel electrode layer comprises the first planar pixel electrode that is positioned at described transmission area and the second pixel electrode that is positioned at the spaced strip in described echo area;
Described display panels is that single box is thick, through the phase-delay quantity of the transmitted light of described transmission area outgoing with flux matched through the catoptrical phase delay of described echo area outgoing.
The embodiment of the invention provides a kind of display device on the other hand, comprises aforesaid display panels.
The display panels that the embodiment of the invention provides and display device, this display panels is the Transflective structure, comprise the first substrate and the second substrate that are oppositely arranged, wherein, pixel electrode layer on this first substrate comprises the first planar pixel electrode that is positioned at transmission area and the second pixel electrode that is positioned at the spaced strip in echo area, this display panels is that single box is thick, through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.Because what adopt among the present invention is the thick structure of single box, thereby has greatly simplified the difficulty of Transflective display panels manufacture craft.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of Transflective display panels that Fig. 1 provides for the embodiment of the invention when making alive not;
Fig. 2 is the structural representation of dot structure in the Transflective display panels shown in Figure 1;
The structural representation of another Transflective display panels that Fig. 3 provides for the embodiment of the invention when making alive not;
Fig. 4 is the structural representation of dot structure in the Transflective display panels shown in Figure 3;
The situation of the arranging synoptic diagram of the liquid crystal molecule of a kind of Transflective display panels that Fig. 5 provides for the embodiment of the invention when making alive not;
Fig. 6 is the structural representation of Transflective display panels when making alive shown in Figure 1;
The situation of the arranging synoptic diagram of the liquid crystal molecule of a kind of Transflective display panels that Fig. 7 provides for the embodiment of the invention when making alive.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The display panels that the embodiment of the invention provides, as shown in Figure 1, comprise: the first substrate 11 that is oppositely arranged and second substrate 12, be liquid crystal layer 13 between first substrate 11 and the second substrate 12, wherein, as shown in Figure 2, first substrate 11 comprises a plurality of pixel regions that marked off by the grid line 21 of transverse and longitudinal intersection and data line 22, each pixel region comprises transmission area and echo area, also comprises:
As shown in Figure 1, first substrate 11 has pixel electrode layer 110, and pixel electrode layer 110 comprises the first planar pixel electrode 111 that is positioned at transmission area and the second pixel electrode 112 that is positioned at the spaced strip in echo area.
Display panels is that single box is thick, through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.
Above-mentioned pixel region can refer to the zone of light-permeable in the dot structure.For example, first substrate 11 can be array base palte, as shown in Figure 2, also is provided with grid line 21 at first substrate 11 near the inboard of liquid crystal layers 13, and with grid line data line 22 arranged in a crossed manner, grid line 21 limits a plurality of pixel regions with data line 22; Second substrate 12 can be color membrane substrates, is provided with black Matrix Pattern at second substrate 12 near the inboard of liquid crystal layers 13, and the R of array format (red), G (green), B (indigo plant) filtering structure; Wherein, black Matrix Pattern is corresponding with grid line 21, data line 22 arranged in a crossed manner.Certainly, this only is an example, should not be construed as the restriction that the present invention is done.
The display panels that the embodiment of the invention provides, this display panels is the Transflective structure, comprise the first substrate and the second substrate that are oppositely arranged, wherein, pixel electrode layer on this first substrate comprises the first planar pixel electrode that is positioned at transmission area and the second pixel electrode that is positioned at the spaced strip in echo area, this display panels is that single box is thick, through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.Because what adopt among the present invention is the thick structure of single box, thereby has greatly simplified the difficulty of Transflective display panels manufacture craft.
In the display panels that the embodiment of the invention provides, the first pixel electrode and the second pixel electrode can be structure as a whole, and this first pixel electrode and the second pixel electrode can be powered by a data line; Perhaps, the first pixel electrode can not be connected with the second pixel electrode, and this first pixel electrode is switched on by the first data line, and this second pixel electrode is powered by the second data line.In display panels illustrated in figures 1 and 2, all be can be structure as a whole with the first pixel electrode and the second pixel electrode, the explanation that this first pixel electrode and the second pixel electrode can be powered and carry out for example by a data line.
Further, as shown in Figure 1, in the outside of pixel electrode layer 110, first substrate 11 also comprises passivation layer 113, the first transparency carrier 114 and the first polaroid 115.Wherein, the outside of pixel electrode layer 110 refers to this pixel electrode layer 110 relatively away from a side of liquid crystal layer 13, and the first transparency carrier 114 specifically can be that the transparent material that adopts glass or transparent resin etc. to have certain soundness is made.
Be provided with reflection horizon 116 on the first transparency carrier 114, these 116 overlay areas, reflection horizon are the echo area, and these reflection horizon 116 uncovered area are transmission area.
Wherein, passivation layer 113 covers reflection horizon 116, and the thickness t 1 of passivation layer 113 that is positioned at transmission area is greater than the thickness t 2 of the passivation layer 113 that is positioned at the echo area, so that this passivation layer 113 is surperficial equal.So, by the passivation layer of uneven thickness is set, the section that can eliminate between the first transparency carrier 114 and the reflection horizon 116 is poor, has guaranteed the planarization on first substrate 11 surfaces.
In all embodiment of the present invention, transmission area all refers to the zone that sees through first substrate, liquid crystal layer and second substrate and penetrate backlight; The echo area all refers to be provided with the zone in reflection horizon 113, exposes to the reflection horizon at the echo area surround lighting through second substrate, liquid crystal layer, again after this reflective layer reflects, through liquid crystal layer, second substrate and penetrate.
Further, in display panels shown in Figure 1, second substrate 12 comprises the planar common electrode layer 121 with pixel electrode layer 110 corresponding settings.In embodiments of the present invention, pixel electrode refers to that the electrode that is connected with data line by switch element (for example, can be thin film transistor (TFT)), public electrode refer to the electrode that is connected with public electrode wire.Wherein, correspondence arranges and all refers to a kind of locational corresponding relation, common electrode layer 121 can be understood as these two hierarchical structures with pixel electrode layer 110 corresponding settings and has identical coverage, namely from looking up or overlook perpendicular to orientation substrate, pixel electrode layer 110 or common electrode layer 121 equal coverages are consistent.
The outside of common electrode layer 121 also comprises the second transparency carrier 122 and the second polaroid 123.Wherein, the outside of common electrode layer 121 refers to this common electrode layer 121 relatively away from a side of liquid crystal layer 13, and the transparent material that the second transparency carrier 122 can adopt glass or transparent resin etc. to have certain soundness is equally made.In embodiments of the present invention, the optical axis direction of the first polaroid 115 can be mutually vertical with the second polaroid 123 optical axis directions.
Compared with prior art, adopt a kind of like this display panels of structure, in the energising situation, common electrode layer 121 and pixel electrode layer 110 provide the vertical electric field vertical with substrate over against the zone, common electrode layer 121 and the pixel electrode layer 110 non-tilting electric fields with horizontal component that provide over against the zone, wherein.Wherein, common electrode layer 121 and pixel electrode layer 110 specifically comprise over against the zone the first pixel electrode 111 or the second pixel electrode 112 and common electrode layer 121 over against the zone, common electrode layer 121 and pixel electrode layer 110 be non-specifically comprise over against the zone slit between the second pixel electrode 112 and common electrode layer 121 over against the zone.
So, the liquid crystal molecule that is positioned at the echo area produces the phase-delay quantity less than the transmission area liquid crystal molecule under the effect of tilting electric field, thereby so that through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing, because what adopt among the present invention is the thick structure of single box, thereby has greatly simplified the difficulty of Transflective display panels manufacture craft.
Below with reference to Fig. 2, the dot structure that is arranged on the first substrate 11 is described in detail.Can see, also be provided with thin film transistor (TFT) 23 in the pixel region, wherein, the grid 231 of thin film transistor (TFT) 23 is electrically connected with grid line 21, source electrode 232 is electrically connected with data line 22, drains 233 to be electrically connected respectively to be positioned at the first planar pixel electrode 111 of transmission area and the second pixel electrode 112 that is positioned at the spaced strip in echo area.Like this in the energising situation, data line 22 can apply voltage to the first pixel electrode 111 and the second pixel electrode 112 by thin film transistor (TFT) 23, public electrode (not shown among Fig. 2) provides voltage by public electrode wire, so that produce uniformly vertical electric field between the first pixel electrode 111 and the second pixel electrode 112 and the public electrode, slit place between the second pixel electrode 112 and public electrode over against the zone then can produce the tilting electric field with certain level component, to drive display panels.
In embodiments of the present invention, liquid crystal layer can adopt the negative liquid crystal molecule, and when electric field is enough strong, the negative liquid crystal molecule will be arranged perpendicular to direction of an electric field.
In order to drive liquid crystal to improve the phase-delay quantity of echo area, need the angle of inclination of strict control echo area electric field, this just requires the second pixel electrode need to satisfy certain width and spacing.The character (as: refractive index properties, dielectric anisotropy character etc.) of determining concrete and negative liquid crystal of spacing is relevant between adjacent strip the second pixel electrode.Specifically can according to following method of testing for the panel that comprises specific a kind of negative liquid crystal, determine the spacing between the second pixel electrode.At first, make different test panels according to predefined several distance values, and, all fill above-mentioned specific a kind of negative liquid crystal in these test panels.Secondly, draw the transmission area of these several test panels and the V-T of echo area (voltage-transmitance) curve characteristic, if the transmission area of a test panel is consistent in error range with the curve characteristic of echo area, the phase delay that transmission area then is described is roughly 2 times of phase delay of echo area, and the proportionate relationship of this test panel just can be used as the reference value in the actual production so.Preferably, as shown in Figure 1, in embodiments of the present invention, the width a of the second pixel electrode is between 0.5-2 μ m, and the spacing b between two adjacent described the second pixel electrodes is between 5-10 μ m.
Can see, in the aforementioned embodiment, all be to be structure as a whole with the first pixel electrode 111 and the second pixel electrode 112, the explanation that the first pixel electrode 111 and the second pixel electrode 112 are powered and carried out by a data line.Certainly, the embodiment of the invention is not limited to this.
The embodiment of the invention also provides a kind of display panels, as shown in Figure 3, comprise: the first substrate 11 that is oppositely arranged and second substrate 12, be liquid crystal layer 13 between first substrate 11 and the second substrate 12, wherein, as shown in Figure 4, first substrate 11 comprises a plurality of pixel regions that the grid line 41, the first data line 421 and the second data line 422 that are intersected by transverse and longitudinal mark off, each pixel region comprises transmission area and echo area, also comprises:
As shown in Figure 3, first substrate 11 has pixel electrode layer 110, and pixel electrode layer 110 comprises the first planar pixel electrode 111 that is positioned at transmission area and the second pixel electrode 112 that is positioned at the spaced strip in echo area.Be with the difference of previous embodiment, in the display panels that the embodiment of the invention provides, the first pixel electrode 111 is not connected with the second pixel electrode 112, the first pixel electrode 111 is switched on by the first data line 221, and the second pixel electrode 112 is powered by the second data line 222.
Display panels is that single box is thick, through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.
Above-mentioned pixel region can refer to the zone of light-permeable in the dot structure.For example, first substrate 11 is array base palte in embodiments of the present invention, as shown in Figure 4, inboard at first substrate 11 close liquid crystal layers 13 also is provided with grid line 41, with grid line 41 the first data line 421 and the second data line 422 arranged in a crossed manner, grid line 41 and the first data line 421 and the second data line 422 limit a plurality of pixel regions, and the second data line 422 and the first data line 421 be arranged in parallel in this pixel region; Second substrate 12 can be color membrane substrates, is provided with black Matrix Pattern at second substrate 12 near the inboard of liquid crystal layers 13, and the R of array format (red), G (green), B (indigo plant) filtering structure; Wherein, black Matrix Pattern is corresponding with grid line 41, the first data line 421 and the second data line 422 arranged in a crossed manner.Certainly, this only is an example, should not be construed as the restriction that the present invention is done.
Similar with previous embodiment, as shown in Figure 3, in the outside of pixel electrode layer 110, first substrate 11 also comprises passivation layer 113, the first transparency carrier 114 and the first polaroid 115.Wherein, the outside of pixel electrode layer 110 refers to this pixel electrode layer 110 relatively away from a side of liquid crystal layer 13, and the first transparency carrier 114 specifically can be that the transparent material that adopts glass or transparent resin etc. to have certain soundness is made.
Be provided with reflection horizon 116 on the first transparency carrier 114, these 116 overlay areas, reflection horizon are the echo area, and these reflection horizon 116 uncovered area are transmission area.
Wherein, passivation layer 113 covers reflection horizon 116, and the thickness t 1 of passivation layer 113 that is positioned at transmission area is greater than the thickness t 2 of the passivation layer 113 that is positioned at the echo area, so that this passivation layer 113 is surperficial equal.So, by the passivation layer of uneven thickness is set, the section that can eliminate between the first transparency carrier 114 and the reflection horizon 116 is poor, has guaranteed the planarization on first substrate 11 surfaces.
In all embodiment of the present invention, transmission area all refers to the zone that sees through first substrate, liquid crystal layer and second substrate and penetrate backlight; The echo area all refers to be provided with the zone in reflection horizon 113, exposes to the reflection horizon at the echo area surround lighting through second substrate, liquid crystal layer, again after this reflective layer reflects, through liquid crystal layer, second substrate and penetrate.
Further, in display panels shown in Figure 3, second substrate 12 comprises the planar common electrode layer 121 with pixel electrode layer 110 corresponding settings.In embodiments of the present invention, pixel electrode refers to that the electrode that is connected with data line by switch element (for example, can be thin film transistor (TFT)), public electrode refer to the electrode that is connected with public electrode wire.Wherein, correspondence arranges and all refers to a kind of locational corresponding relation, common electrode layer 121 can be understood as these two hierarchical structures with pixel electrode layer 110 corresponding settings and has consistent coverage, namely from looking up or overlook perpendicular to orientation substrate, pixel electrode layer 110 or common electrode layer 121 all can shelter from the other side.
The outside of common electrode layer 121 also comprises the second transparency carrier 122 and the second polaroid 123.Wherein, the outside of common electrode layer 121 refers to this common electrode layer 121 relatively away from a side of liquid crystal layer 13, and the transparent material that the second transparency carrier 122 can adopt glass or transparent resin etc. to have certain soundness is equally made.In embodiments of the present invention, the optical axis direction of the first polaroid 115 can be mutually vertical with the second polaroid 123 optical axis directions.
Compared with prior art, adopt a kind of like this display panels of structure, in the energising situation, common electrode layer 121 and pixel electrode layer 110 provide the vertical electric field vertical with substrate over against the zone, common electrode layer 121 and the pixel electrode layer 110 non-tilting electric fields with horizontal component that provide over against the zone, wherein.Wherein, common electrode layer 121 and pixel electrode layer 110 specifically comprise over against the zone the first pixel electrode 111 or the second pixel electrode 112 and common electrode layer 121 over against the zone, common electrode layer 121 and pixel electrode layer 110 be non-specifically comprise over against the zone slit between the second pixel electrode 112 and common electrode layer 121 over against the zone.
So, the liquid crystal molecule that is positioned at the echo area produces the phase-delay quantity less than the transmission area liquid crystal molecule under the effect of tilting electric field, thereby so that through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing, because what adopt among the present invention is the thick structure of single box, thereby has greatly simplified the difficulty of Transflective display panels manufacture craft.
Below with reference to Fig. 4, the dot structure that is arranged on the first substrate 11 is described in detail.Can see, also be provided with the first film transistor 43 and the second thin film transistor (TFT) 44 in the pixel region, wherein, the grid 431 of the first film transistor 43 is electrically connected with grid line 41, source electrode 432 is electrically connected with the first data line 421, drain electrode 433 is electrically connected the first planar pixel electrode 111 that is positioned at transmission area, the grid 441 of the second thin film transistor (TFT) 44 is electrically connected with grid line 41, source electrode 442 is electrically connected with the second data line 422, drains 443 to be electrically connected with the second pixel electrode 112 that is positioned at the spaced strip in echo area.Like this in the energising situation, the first data line 421 can apply voltage to the first pixel electrode 111 by the first film transistor 43, the second data line 422 can apply voltage to the second pixel electrode 112 by the second thin film transistor (TFT) 44, public electrode (not shown among Fig. 4) provides voltage by public electrode wire, so that produce uniformly vertical electric field between the first pixel electrode 111 and the second pixel electrode 112 and the public electrode, slit place between the second pixel electrode 112 and public electrode over against the zone then can produce the tilting electric field with certain level component, to drive the liquid crystal mesogens display panel.
Need to prove that the first data line 421 and the second data line 422 can be arranged at the optional position in the pixel region in parallel to each other.In display panels as shown in Figure 4, the first data line 421 and the second data line 422 lay respectively at the both sides of pixel region.So, the second data line 422 that is positioned at the current pixel zone is closely adjacent with the first data line 421 of adjacent pixel regions, deceives matrix structure to block the second data line 422 thereby need not extra increasing, and has guaranteed the aperture opening ratio of display panels.
Further, the first data line 421, the second data line 422 can apply different voltages to the first pixel electrode 111, the second pixel electrode 112 respectively so that through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.
In embodiments of the present invention, liquid crystal layer can adopt the negative liquid crystal molecule, and when electric field is enough strong, the negative liquid crystal molecule will be arranged perpendicular to direction of an electric field.
In the energising situation, can apply different voltages to the first pixel electrode, the second pixel electrode respectively by the first data line, the second data line, as for the magnitude of voltage that imposes on two pixel electrodes determine relevant with the character (as: refractive index properties, dielectric anisotropy character etc.) of negative liquid crystal.Specifically can according to following method of testing for the panel that comprises specific a kind of negative liquid crystal, determine the relation of two magnitudes of voltage.At first, according to manufacturing test panel in advance, fill above-mentioned specific a kind of negative liquid crystal in this test panel.Secondly, apply voltage by the first data line to the first pixel electrode of transmission area, apply voltage by the second data line to the second pixel electrode of echo area, draw respectively the transmission area of this test panel and the V-T of echo area (voltage-transmitance) curve characteristic, analyze the curve characteristic in two zones, and obtain successively the magnitude of voltage at consistent corresponding first, second data line in position of each transmitance.In embodiments of the present invention the above-mentioned magnitude of voltage that imposes on two pixel electrodes is not added restriction, with in the actual production can so that the light of the transmission area of same pixel region and echo area by identical being as the criterion of phase-delay quantity that negative liquid crystal layer was produced.Similar with previous embodiment, in embodiments of the present invention, the width of the second pixel electrode is between 0.5-2 μ m, and the spacing between two adjacent described the second pixel electrodes is between 5-10 μ m.
Adopt a kind of like this display panels of structure, the first pixel electrode is not connected with the second pixel electrode, and this first pixel electrode is powered by the first data line, and the second pixel electrode is powered by the second data line.So, namely can effectively control the phase-delay quantity that liquid crystal layer produces by the driving voltage that changes the first pixel electrode and the second pixel, thereby greatly increase the dirigibility of display panels control.
Below, how to realize that for the above-mentioned display panels that provides semi-transparent semi-reflecting demonstration is described in detail.
Be structure as a whole as example with the first pixel electrode 111 and the second pixel electrode 112, Fig. 1 is the structural representation of display panels when not powering up.When making alive not, all perpendicular to the substrate orientation, the liquid crystal molecule layout viewing of this moment as shown in Figure 5 for liquid crystal molecule.Exemplary, in display panels shown in Figure 5, the thickness of liquid crystal cell is preferably 4.4 μ m, the preferred 1 μ m of the width of the second pixel electrode, the preferred 8 μ m of spacing between two adjacent described the second pixel electrodes.For a kind of like this display panels, optically-active can not occur through this liquid crystal layer in the light of transmission area and echo area, thereby just can not produce phase-delay quantity yet, if the polarization direction of the first polaroid 115 and the second polaroid 123 is 90 degree angles, emergent ray can be blocked fully by the first polaroid 115, thereby realizes that good dark attitude shows.
Fig. 6 is the structural representation of display panels when powering up shown in Figure 1.Wherein, produce uniformly vertically electric field between the first pixel electrode 111 and the common electrode layer 121, the negative liquid crystal molecule of transmission area produces the phase delay of horizontal direction owing to the impact that is subjected to vertical electric field gradually becomes horizontally; In the echo area, the second pixel electrode 112 and common electrode layer 121 over against the negative liquid crystal molecule of part owing to the impact that is subjected to vertical electric field gradually becomes horizontal, produce the phase delay of horizontal direction, and in the echo area the second pixel electrode 112 and common electrode layer 121 non-over against the part electric field line be vergence direction and arrange, the negative liquid crystal molecule is owing to the impact that is subjected to tilting electric field gradually becomes oblique arrangement, produce the phase delay of vergence direction, the liquid crystal molecule layout viewing of this moment as shown in Figure 7.Exemplary, in display panels shown in Figure 7, the thickness of liquid crystal cell is preferably 4.4 μ m equally, the preferred 1 μ m of the width of the second pixel electrode, the preferred 8 μ m of spacing between two adjacent described the second pixel electrodes.Negative liquid crystal can produce larger horizontal phase and postpone Δ n1 under the vertical electric field action of transmission area, simultaneously, the negative liquid crystal of echo area can produce less horizontal phase and postpone Δ n2 under vertical electric field and tilting electric field acting in conjunction.Therefore, by the optimization to voltage between echo area the second pixel electrode spacing or transmission area and the echo area, so that can produce than the more horizontal phase delay in echo area through the light of transmission area, namely probably be Δ n transmission area=2* Δ n echo area.And the light of echo area is equivalent to twice through liquid crystal layer because of the cause that reflects, and light path doubles, namely d echo area=2*d transmission area.To sum up, can obtain transmission area (Δ n*d)=echo area (Δ n*d), thereby realize the coupling of the phase-delay quantity of transmission area and echo area, and finally reach semi-transparent semi-reflecting display effect.
Can not be connected with the second pixel electrode for above-mentioned the first pixel electrode that provides, this first pixel electrode is switched on by the first data line, how the display panels that this second pixel electrode is powered by the second data line realizes that semi-transparent semi-reflecting demonstration can be with reference to above-mentioned principle, does not add at this and gives unnecessary details.
The display panels that the embodiment of the invention provides, this display panels is the Transflective structure, comprise the first substrate and the second substrate that are oppositely arranged, wherein, pixel electrode layer on this first substrate comprises the first planar pixel electrode that is positioned at transmission area and the second pixel electrode that is positioned at the spaced strip in echo area, this display panels is that single box is thick, through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.Because what adopt among the present invention is the thick structure of single box, thereby has greatly simplified the difficulty of Transflective display panels manufacture craft.
Need to prove; for clearly describing the claimed structure of the present invention; so in each embodiment and accompanying drawing, do simplification or omit processing with the incoherent structure of the present invention; and in each embodiment and accompanying drawing, do and simplify or to omit the structure of processing all be those skilled in the art holds facilely under the creative work prerequisite not making, do not give unnecessary details so do not add at present embodiment.
The embodiment of the invention also provides a kind of display device, and it comprises above-mentioned any display panels, and this display device can have for liquid crystal display, LCD TV, digital album (digital photo frame), mobile phone, panel computer etc. product or the parts of any Presentation Function.
Wherein, the structure of display panels has been done detailed description in the aforementioned embodiment, does not do herein and gives unnecessary details.
The display device that the embodiment of the invention provides, comprise display panels, this display panels is the Transflective structure, comprise the first substrate and the second substrate that are oppositely arranged, wherein, pixel electrode layer on this first substrate comprises the first planar pixel electrode that is positioned at transmission area and the second pixel electrode that is positioned at the spaced strip in echo area, this display panels is that single box is thick, through the phase-delay quantity of the transmitted light of transmission area outgoing with flux matched through the catoptrical phase delay of echo area outgoing.Because what adopt among the present invention is the thick structure of single box, thereby has greatly simplified the difficulty of Transflective display panels manufacture craft.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, 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 (10)
1. display panels, comprise: the first substrate that is oppositely arranged and second substrate, be liquid crystal layer between described first substrate and the described second substrate, described first substrate comprises a plurality of pixel regions that marked off by the grid line of transverse and longitudinal intersection and data line, each described pixel region comprises transmission area and echo area, it is characterized in that, also comprise:
Described first substrate has pixel electrode layer, and described pixel electrode layer comprises the first planar pixel electrode that is positioned at described transmission area and the second pixel electrode that is positioned at the spaced strip in described echo area;
Described display panels is that single box is thick, through the phase-delay quantity of the transmitted light of described transmission area outgoing with flux matched through the catoptrical phase delay of described echo area outgoing.
2. display panels according to claim 1 is characterized in that, in the outside of described pixel electrode layer, described first substrate also comprises passivation layer, the first transparency carrier and the first polaroid;
Be provided with the reflection horizon on described the first transparency carrier, overlay area, described reflection horizon is the echo area, and described reflection horizon uncovered area is transmission area;
Described passivation layer covers described reflection horizon, is positioned at the thickness of described passivation layer of transmission area greater than the thickness of the described passivation layer that is positioned at the echo area, so that described passivation layer is surperficial equal.
3. display panels according to claim 1 is characterized in that, described second substrate comprises the planar common electrode layer of corresponding setting with described pixel electrode layer;
The outside of described common electrode layer also comprises the second transparency carrier and the second polaroid;
In the energising situation, described common electrode layer and described pixel electrode layer provide the vertical electric field vertical with substrate, the non-tilting electric field with horizontal component that provides over against the zone of described common electrode layer and described pixel electrode layer over against the zone.
4. display panels according to claim 1 is characterized in that,
Described the first pixel electrode and described the second pixel electrode are structure as a whole, and described the first pixel electrode and the second pixel electrode are powered by a data line; Or,
Described the first pixel electrode is not connected with described the second pixel electrode, and described the first pixel electrode is powered by the first data line, and described the second pixel electrode is powered by the second data line.
5. display panels according to claim 4 is characterized in that, described the first data line and described the second data line lay respectively at the both sides of described pixel region.
6. display panels according to claim 4, it is characterized in that, when described the first pixel electrode is not connected with described the second pixel electrode, described the first data line, described the second data line apply different voltages to the first pixel electrode, the second pixel electrode respectively so that through the phase-delay quantity of the transmitted light of described transmission area outgoing with flux matched through the catoptrical phase delay of described echo area outgoing.
7. according to claim 1 to 6 arbitrary described display panels, it is characterized in that described liquid crystal layer is negative liquid crystal layer.
8. according to claim 1 to 6 arbitrary described display panels, it is characterized in that the width of described the second pixel electrode is between 0.5-2 μ m.
9. according to claim 1 to 6 arbitrary described display panels, it is characterized in that the spacing between two adjacent described the second pixel electrodes is between 5-10 μ m.
10. a display device is characterized in that, comprises such as the arbitrary described display panels of claim 1 to 9.
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