CN1866088A - Semi-transmissive and semi-reflective liquid crystal display device - Google Patents
Semi-transmissive and semi-reflective liquid crystal display device Download PDFInfo
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- CN1866088A CN1866088A CN 200510034762 CN200510034762A CN1866088A CN 1866088 A CN1866088 A CN 1866088A CN 200510034762 CN200510034762 CN 200510034762 CN 200510034762 A CN200510034762 A CN 200510034762A CN 1866088 A CN1866088 A CN 1866088A
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Abstract
The related semi-penetration semi-reflection LCD comprises: a first base plate with a public electrode on inner surface and a first polarizing sheet on outer surface, a second base plate with a pixel electrode on inner surface and a second polarizing sheet on outer surface, and a LC layer arranged between two plates; wherein, the pixel electrode, public electrode and LC layer form a pixel area with a reflection and penetration areas; there is a first/second optical compensation structure between the first/second plate and first/second polarizing sheet.
Description
[technical field]
The invention relates to a kind of liquid crystal indicator, particularly about a kind of semi-penetrating semi-reflecting type liquid crystal displaying device.
[background technology]
Liquid crystal indicator has characteristics such as low diathermaneity, compact and power consumption are low because of it, thereby uses day by day extensively, and along with the ripe and innovation of correlation technique, its kind is also various day by day.
According to the difference of light source that liquid crystal indicator utilizes, can be divided into penetration liquid crystal display device and reflective LCD device.Penetration liquid crystal display device must be provided with a backlight at the back side of display panels and show to realize image, and still, the power consumption of backlight accounts for half of whole penetration liquid crystal display device power consumption, so the power consumption of penetration liquid crystal display device is bigger.Reflective LCD device can solve the big problem of penetration liquid crystal display device power consumption, but is difficult to realize that image shows under the faint environment of light.Semi-penetrating semi-reflecting type liquid crystal displaying device can solve above problem.
See also Fig. 1, prior art semi-penetrating semi-reflecting type liquid crystal displaying device 1 comprises that two relative transparent upper 10 and infrabasal plate 20, liquid crystal layers 30 are clipped between this upper substrate 10 and the infrabasal plate 20.
Should go up retardation plate 81 is quarter-wave plate (λ/4) with following retardation plate 82, and alignment film 51,52 is horizontal direction matching (Homogeneous Alignment), and last Polarizer 91 is orthogonal with the polarization direction of following Polarizer 92.Reflecting electrode 44 is the metallic aluminium (Al) of high reflectance, public electrode 41 and transparency electrode 43 be transparent conductive material such as tin indium oxide (IndiumTin Oxide, ITO) or indium zinc oxide (Indium Zinc Oxide, IZO).
This public electrode 41, pixel electrode 42 and the liquid crystal layer 30 that is clipped in wherein constitute a pixel region, and this pixel region has a reflector space and a penetration region, and the zone corresponding with reflecting electrode 44 is reflector space, and the zone corresponding with opening 70 is penetration region.
The optical delay of the liquid crystal layer 30 of reflector space is:
Δn*d
11＝λ/4
Because d12 is approximately the twice of d11, so the optical delay of the liquid crystal layer 30 of penetration region is:
Δn*d
12＝λ/2
Wherein Δ n is the birefraction of liquid crystal layer 30, and λ is the wavelength of light.
Please consult Fig. 2 together, be the bright attitude of this semi-penetrating semi-reflecting type liquid crystal displaying device 1 and the Liquid Crystal Molecules Alignment synoptic diagram under the dark attitude.When not applying voltage, the liquid crystal molecule along continuous straight runs is arranged, because the optical delay of the liquid crystal layer 30 of reflector space is λ/4, the optical delay of the liquid crystal layer 30 of penetration region is λ/2, so this semi-penetrating semi-reflecting type liquid crystal displaying device 1 is bright attitude.When applying voltage, liquid crystal molecule is arranged along the direction perpendicular to substrate 10,20, and the optical delay of liquid crystal layer 30 is 0, so this semi-penetrating semi-reflecting type liquid crystal displaying device 1 is dark attitude.Can realize that by the voltage that applies different value different GTGs shows.
But, when applying voltage, owing to have grasp energy (Anchoring Energy) between alignment film 51,52 and near the liquid crystal molecule that is positioned at it, near the alignment film 51,52 liquid crystal molecule can not be arranged along the direction perpendicular to substrate 10,20 fully, and during this liquid crystal layer 30 of light process, there is optical path difference in the light path difference owing in reflector space and penetration region, so the generation optical delay makes this semi-penetrating semi-reflecting type liquid crystal displaying device 1 have light leakage phenomena when dark attitude.See also Fig. 3, be the voltage of prior art semi-penetrating semi-reflecting type liquid crystal displaying device 1 and the curve map of penetrance, when voltage raise gradually (when reaching 5V), the penetrance of this semi-penetrating semi-reflecting type liquid crystal displaying device 1 is not 0, that is to say and to realize this moment complete deceiving, still there is part light to pass through, the forward contrast that influence shows.And this kind LCD alignment mode response speed is slower, has residual image when promptly showing dynamic menu, causes display effect not good.
[summary of the invention]
More slowly to make the not good problem of liquid crystal indicator display effect in order solving in the prior art owing to liquid crystal response speed, to be necessary to provide a kind of and to overcome liquid crystal response speed slowly so that the good semi-penetrating semi-reflecting type liquid crystal displaying device of display effect.
An embodiment of the present invention provides a kind of semi-penetrating semi-reflecting type liquid crystal displaying device, it comprises one first substrate, one second substrate, one liquid crystal layer, one public electrode, one pixel electrode, one first polaroid, one second polaroid, this liquid crystal layer is clipped between this first substrate and this second substrate, this public electrode is arranged on the inside surface of first substrate, this first polaroid is arranged on the outside surface of first substrate, this pixel electrode is arranged on the inside surface of second substrate, this second polaroid is arranged on the outside surface of second substrate, this pixel electrode, public electrode and the liquid crystal layer that is clipped in wherein constitute a pixel region, this pixel region tool one reflector space and a penetration region, one first optical compensation structure is set between this first substrate and first polaroid, one second optical compensation structure is set between this second substrate and second polaroid, and this liquid crystal layer is an optics compensate for bend structure.
Compared with prior art, semi-penetrating semi-reflecting type liquid crystal displaying device of the present invention has following advantage: the liquid crystal layer of this semi-penetrating semi-reflecting type liquid crystal displaying device is set to optics compensate for bend (Optical Compensation Bend, OCB) structure, make this liquid crystal molecule under the effect of voltage, can rotate within a short period of time, improve the response speed of liquid crystal molecule, thereby improve the response characteristic of this semi-penetrating semi-reflecting type liquid crystal displaying device; Optical compensation structure and the use of optical compensation structure down in the cooperation, can be when applying voltage, the phase delay that also not exclusively causes perpendicular to the substrate arrangement owing to liquid crystal molecule compensates, thereby the light leakage phenomena when reducing dark attitude, improve the contrast of this semi-penetrating semi-reflecting type liquid crystal displaying device, and cooperate different compensating plates further to improve the visual angle.
[description of drawings]
Fig. 1 is the diagrammatic cross-section of prior art semi-penetrating semi-reflecting type liquid crystal displaying device.
Fig. 2 is the bright attitude of prior art semi-penetrating semi-reflecting type liquid crystal displaying device and the Liquid Crystal Molecules Alignment synoptic diagram under the dark attitude.
Fig. 3 is the penetrance and the driving voltage graph of relation of prior art semi-penetrating semi-reflecting type liquid crystal displaying device.
Fig. 4 is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device of the present invention.
Fig. 5 is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device first embodiment of the present invention.
Fig. 6,13,20,27,34,41 be respectively this semi-penetrating semi-reflecting type liquid crystal displaying device first to six embodiment use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of penetration region.
Fig. 7,14,21,28,35,42 be respectively this semi-penetrating semi-reflecting type liquid crystal displaying device first to six embodiment use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of reflector space.
Fig. 8,15,22,29,36,43 is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device first to six embodiment is under 0 degree, the different impressed voltage in the position angle, the penetrance family curve synoptic diagram of penetration region.
Fig. 9,16,23,30,37,44 is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device first to six embodiment is under 0 degree, the different impressed voltage in the position angle, the penetrance family curve synoptic diagram of reflector space.
Figure 10,17,24,31,38,45 is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device first to six embodiment is under 90 degree, the different impressed voltage in the position angle, the penetrance family curve synoptic diagram of penetration region.
Figure 11,18,25,32,39,46 is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device first to six embodiment is under 90 degree, the different impressed voltage in the position angle, the penetrance family curve synoptic diagram of reflector space.
Figure 12 is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device second embodiment of the present invention.
Figure 19 is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device the 3rd embodiment of the present invention.
Figure 26 is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device the 4th embodiment of the present invention.
Figure 33 is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device the 5th embodiment of the present invention.
Figure 40 is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device the 6th embodiment of the present invention.
[embodiment]
Seeing also Fig. 4, is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device of the present invention.This semi-penetrating semi-reflecting type liquid crystal displaying device 100 comprises a upper substrate 110, one and the infrabasal plate that is oppositely arranged of upper substrate 110 120, the liquid crystal layer 130 between this two substrates 110,120.
Alignment film 151 is successively set on the inside surface of this upper substrate 110 on one public electrode 141 and, on one on the optical compensation structure 181 and a Polarizer 191 be successively set on the outside surface of this upper substrate 110.One pixel electrode 142 and once alignment film 152 be successively set on the inside surface of this infrabasal plate 120, this pixel electrode 142 comprises a transparency electrode 143 and a reflecting electrode 144, one passivation layer 160 is set between this transparency electrode 143 and the reflecting electrode 144, and wherein this passivation layer 160 and reflecting electrode 143 have an opening 170.Once optical compensation structure 182 and once Polarizer 192 be successively set on the outside surface of this infrabasal plate 120.
This public electrode 141, pixel electrode 142 and the liquid crystal layer 130 that is clipped in wherein constitute a pixel region, this pixel region has a reflector space and a penetration region, the zone corresponding with reflecting electrode 144 is reflector space, and the zone corresponding with opening 170 is penetration region.
Liquid crystal layer 130 has different thickness, and liquid crystal layer 130 thickness that are positioned at reflector space are less than liquid crystal layer 130 thickness that are positioned at penetration region.
This liquid crystal layer 130 comprises a plurality of eurymeric liquid crystal molecules (not indicating).This liquid crystal layer 130 be the optics compensate for bend (its liquid crystal molecule is horizontal direction matching (Homogeneous Alignment) for Optical Compensation Bend, OCB) structure, tilt angle be 0 degree to 15 degree, make the easier rotation of liquid crystal molecule.
Should go up the absorption axes (Absorption Axis) of Polarizer 191 and the angle of liquid crystal layer 130 alignment direction and be roughly 0 degree, the angle of the absorption axes of this time Polarizer 192 and last Polarizer 191 absorption axes is roughly 90 degree.
Reflecting electrode 144 is the metallic aluminium (Al) of high reflectance, public electrode 141 and transparency electrode 143 be transparent conductive material such as tin indium oxide (Indium Tin Oxide, ITO) or indium zinc oxide (Indium Zinc Oxide, IZO).
Seeing also Fig. 5, is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device 100 first embodiments of the present invention.The last optical compensation structure 281 of this semi-penetrating semi-reflecting type liquid crystal displaying device 200 comprises on one first on the compensating plate 283, one second retardation plate 285 on the compensating plate 284 and one first, this retardation plate 285 and go up the outside surface that Polarizer 291 is successively set on upper substrate 210 on compensating plate 284, first on compensating plate 283, second on first.Following optical compensation structure 282 comprises one first time compensating plate 287, one second time compensating plate 288 and one first time retardation plate 289, this first time compensating plate 287, second time compensating plate 288, first time retardation plate 289 and down Polarizer 292 be successively set on the outside surface of infrabasal plate 220.
This on first compensating plate 283 and first time compensating plate 287 be C-plate compensating plate, this C-plate compensating plate is made by uniaxial crystal, can compensate the contrast of forward.This on second compensating plate 284 and second time compensating plate 288 be A-plate compensating plate, this A-plate compensating plate is made by uniaxial crystal, can compensate the contrast of negative sense.This on first retardation plate 285 and first time retardation plate 289 be quarter-wave plate.
Wherein, the slow axis (Slow Axis) of this compensating plate 284 on second is 90 degree with the angle of last Polarizer 291 absorption axes, and the slow axis of this retardation plate 285 on first and the angle of last Polarizer 291 absorption axes are 45 to spend.The angle of compensating plate 284 slow axis is 0 degree on the slow axis of this second time compensating plate 288 and second, and the angle of retardation plate 285 slow axis is 90 degree on the slow axis of first time retardation plate 289 and first.
When applying voltage, the liquid crystal molecule that is parallel to substrate 210 rearranges gradually to the edge to be arranged perpendicular to substrate 210,220 directions, originally the liquid crystal molecule perpendicular to substrate 210 then keeps motionless, and the required intermolecular force that overcomes is little, makes the response speed of liquid crystal molecule accelerate.
This semi-penetrating semi-reflecting type liquid crystal displaying device 200 is used on first on the compensating plate 283, second on the compensating plate 284, first retardation plate 285 and first time compensating plate 287, second time compensating plate 288, first time retardation plate 289, can be when applying voltage owing to liquid crystal molecule and not exclusively arrange the phase delay that causes and compensate perpendicular to substrate, thereby the light leakage phenomena when reducing dark attitude, improve the contrast of this semi-penetrating semi-reflecting type liquid crystal displaying device, and improve the visual angle simultaneously.
See also Fig. 6, Fig. 7, be respectively this semi-penetrating semi-reflecting type liquid crystal displaying device 200 use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of penetration region and reflector space.Wherein, this circumferencial direction is position angle (0 degree to 360 degree), and radial direction is visual angle (0 degree is to 80 degree), is respectively 10,50,1000 curve distribution among the figure for contrast.As we know from the figure, the contrast of this semi-penetrating semi-reflecting type liquid crystal displaying device and visual angle are good.
Seeing also Fig. 8, Fig. 9, is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device 200 is under 0 degree, the different impressed voltage in the position angle, the penetrance family curve synoptic diagram of penetration region and reflector space.Wherein, this X direction is visual angle (80 degree are to 80 degree), and y direction is a penetrance, is respectively the curve distribution of V1=1.5 volt, V2=2 volt, V3=3 volt, V4=4 volt, V5=7 volt among the figure for impressed voltage.As we know from the figure, this semi-penetrating semi-reflecting type liquid crystal displaying device 200 is 0 degree zone at the position angle, and the phenomenon of no GTG counter-rotating takes place.
This semi-penetrating semi-reflecting type liquid crystal displaying device 200 is that the penetrance family curve synoptic diagram of penetration region and reflector space sees also Figure 10, Figure 11 under 90 degree, the different impressed voltage at the position angle.As we know from the figure, this semi-penetrating semi-reflecting type liquid crystal displaying device 200 is 90 degree zones at the position angle, and the phenomenon of no GTG counter-rotating takes place.Therefore, this semi-penetrating semi-reflecting type liquid crystal displaying device 200 has than high penetration.
Seeing also Figure 12, is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device 100 second embodiments of the present invention.This semi-penetrating semi-reflecting type liquid crystal displaying device 300 is with semi-penetrating semi-reflecting type liquid crystal displaying device 200 differences: this on optical compensation structure 381 further comprise on one the 3rd on the compensating plate 386, the three compensating plate 386 be arranged on first retardation plate 385 and between the Polarizer 391.Compensating plate 386 is an A-plate compensating plate on the 3rd, and the angle of its slow axis and last Polarizer 391 absorption axes is 90 degree.
See also Figure 13, be this semi-penetrating semi-reflecting type liquid crystal displaying device 300 use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of penetration region.Figure 14 is the contrast response curve synoptic diagram of reflector space.As can be known, this semi-penetrating semi-reflecting type liquid crystal displaying device 300 has good contrast and visual angle.
Seeing also Figure 15, Figure 16, is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device 300 is under 0 degree, the different impressed voltage at the position angle, the penetrance family curve synoptic diagram of penetration region and reflector space.Figure 17, Figure 18 are respectively that the position angle is under 90 degree, the different impressed voltage, the penetrance family curve synoptic diagram of penetration region and reflector space.As can be known, therefore, the phenomenon of these semi-penetrating semi-reflecting type liquid crystal displaying device 300 no GTG counter-rotatings takes place.
Seeing also Figure 19, is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device 100 the 3rd embodiment of the present invention.The last optical compensation structure 481 of this semi-penetrating semi-reflecting type liquid crystal displaying device 400 comprises on one first retardation plate 485 on the compensating plate 483 and one first, this retardation plate 485 and go up the outside surface that Polarizer 491 is successively set on upper substrate 410 on compensating plate 483, first on first.Following optical compensation structure 482 comprises one first time compensating plate 487 and one first time retardation plate 489, this first time compensating plate 487, first time retardation plate 489 and down Polarizer 492 be successively set on the outside surface of infrabasal plate 420.
This on first compensating plate 483 and first time compensating plate 487 be biaxial compensation sheet (BiaxialCompensation Film), this biaxial compensation sheet is made by biaxial crystal.This on first retardation plate 485 and first time retardation plate 489 be quarter-wave plate.
Wherein, the slow axis of this compensating plate 483 on first and the angle of last Polarizer 491 absorption axes are 90 degree, and the slow axis of this retardation plate 485 on first and the angle of last Polarizer 491 absorption axes are 45 to spend.The angle of compensating plate 483 slow axis is 0 degree on the slow axis of this first time compensating plate 487 and first, and the angle of retardation plate 485 slow axis is 90 degree on the slow axis of first time retardation plate 489 and first.
See also Figure 20, be this semi-penetrating semi-reflecting type liquid crystal displaying device 400 use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of penetration region.Figure 21 is the contrast response curve synoptic diagram of reflector space.As can be known, this semi-penetrating semi-reflecting type liquid crystal displaying device 400 has good contrast and visual angle.
Seeing also Figure 22,23, is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device 400 is under 0 degree, the different impressed voltage at the position angle, the penetrance family curve synoptic diagram of penetration region and reflector space.Figure 24, Figure 25 are respectively that the position angle is under 90 degree, the different impressed voltage, the penetrance family curve synoptic diagram of penetration region and reflector space.As can be known, therefore, the phenomenon of these semi-penetrating semi-reflecting type liquid crystal displaying device 400 no GTG counter-rotatings takes place.
Seeing also Figure 26, is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device 100 the 4th embodiment of the present invention.This semi-penetrating semi-reflecting type liquid crystal displaying device 500 is with semi-penetrating semi-reflecting type liquid crystal displaying device 400 differences: this on optical compensation structure 581 further comprise on one the 3rd on the compensating plate 586, the three compensating plate 586 be arranged on first retardation plate 585 and between the Polarizer 591.Compensating plate 586 is an A-plate compensating plate on the 3rd, and the angle of its slow axis and last Polarizer 591 absorption axes is 90 degree.
See also Figure 27, be this semi-penetrating semi-reflecting type liquid crystal displaying device 500 use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of penetration region.Figure 28 is the contrast response curve synoptic diagram of reflector space.As can be known, this semi-penetrating semi-reflecting type liquid crystal displaying device 500 has good contrast and visual angle.
Seeing also Figure 29, Figure 30, is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device 500 is under 0 degree, the different impressed voltage at the position angle, the penetrance family curve synoptic diagram of penetration region and reflector space.Figure 31, Figure 32 are respectively that the position angle is under 90 degree, the different impressed voltage, the penetrance family curve synoptic diagram of penetration region and reflector space.As can be known, therefore, the phenomenon of these semi-penetrating semi-reflecting type liquid crystal displaying device 500 no GTG counter-rotatings takes place.
Seeing also Figure 33, is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device 100 the 5th embodiment of the present invention.The last optical compensation structure 681 of this semi-penetrating semi-reflecting type liquid crystal displaying device 600 comprises on one first on the compensating plate 683, one second retardation plate 685 on the compensating plate 684 and one first, this retardation plate 685 and go up the outside surface that Polarizer 691 is successively set on upper substrate 610 on compensating plate 684, first on compensating plate 683, second on first.Following optical compensation structure 682 comprises one first time compensating plate 687, one second time compensating plate 688 and one first time retardation plate 689, this first time compensating plate 687, second time compensating plate 688, first time retardation plate 689 and down Polarizer 692 be successively set on the outside surface of infrabasal plate 620.
This on first compensating plate 683 and first time compensating plate 687 be mixed C-plate compensating plate (Hybrid C-plate Compensation Film), this mixed C-plate compensating plate is made by uniaxial crystal.This on second compensating plate 684 and second time compensating plate 688 be C-plate compensating plate.This on first retardation plate 685 and first time retardation plate 689 be quarter-wave plate.
Wherein, the angle of the slow axis of this retardation plate 685 on first and last Polarizer 691 absorption axes is 45 degree.The angle of retardation plate 685 slow axis is 90 degree on the slow axis of first time retardation plate 689 and first.
See also Figure 34, be this semi-penetrating semi-reflecting type liquid crystal displaying device 600 use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of penetration region.Figure 35 is the contrast response curve synoptic diagram of reflector space.As can be known, this semi-penetrating semi-reflecting type liquid crystal displaying device 600 has good contrast and visual angle.
Seeing also Figure 36, Figure 37, is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device 600 is under 0 degree, the different impressed voltage at the position angle, the penetrance family curve synoptic diagram of penetration region and reflector space.Figure 38, Figure 39 are respectively that the position angle is under 90 degree, the different impressed voltage, the penetrance family curve synoptic diagram of penetration region and reflector space.As can be known, therefore, this semi-penetrating semi-reflecting type liquid crystal displaying device 600 has than high penetration.
Seeing also Figure 40, is the structural representation of semi-penetrating semi-reflecting type liquid crystal displaying device 100 the 6th embodiment of the present invention.This semi-penetrating semi-reflecting type liquid crystal displaying device 700 is with semi-penetrating semi-reflecting type liquid crystal displaying device 600 differences: optical compensation structure 781 further comprises compensating plate 786 on one second this on, this on second compensating plate 786 be arranged on first retardation plate 785 and between the Polarizer 791.This on second compensating plate 786 be A-plate compensating plate, the angle of its slow axis and last Polarizer 791 absorption axes is 90 degree.
See also Figure 41, be this semi-penetrating semi-reflecting type liquid crystal displaying device 700 use single wavelength light source (during λ=560nm), the contrast response curve synoptic diagram of penetration region.Figure 42 is the contrast response curve synoptic diagram of reflector space.As can be known, this semi-penetrating semi-reflecting type liquid crystal displaying device 700 has good contrast and visual angle.
Seeing also Figure 43, Figure 44, is respectively that this semi-penetrating semi-reflecting type liquid crystal displaying device 700 is under 0 degree, the different impressed voltage at the position angle, the penetrance family curve synoptic diagram of penetration region and reflector space.Figure 45, Figure 46 are that the position angle is under 90 degree, the different impressed voltage, the penetrance family curve synoptic diagram of penetration region and reflector space.As can be known, therefore, this semi-penetrating semi-reflecting type liquid crystal displaying device 700, the phenomenon of no GTG counter-rotating takes place.
In the embodiments of the present invention, this on first retardation plate or first time retardation plate can use a quarter-wave plate and 1/1st wave plate to replace.
The liquid crystal layer of semi-penetrating semi-reflecting type liquid crystal displaying device of the present invention is set to optics compensate for bend structure, make this liquid crystal molecule under the effect of voltage, can rotate within a short period of time, improve the response speed of liquid crystal molecule, thereby improve the response characteristic of this semi-penetrating semi-reflecting type liquid crystal displaying device.Optical compensation structure and the use of optical compensation structure down in the cooperation, can be when applying voltage, the phase delay that also not exclusively causes perpendicular to the substrate arrangement owing to liquid crystal molecule compensates, thereby the light leakage phenomena when reducing dark attitude, the contrast and the visual angle of improving this semi-penetrating semi-reflecting type liquid crystal displaying device.
Claims (20)
1. semi-penetrating semi-reflecting type liquid crystal displaying device, it comprises one first substrate, one second substrate, one liquid crystal layer, one public electrode, one pixel electrode, one first polaroid, one second polaroid, this liquid crystal layer is clipped between this first substrate and this second substrate, this public electrode is arranged on the inside surface of first substrate, this first polaroid is arranged on the outside surface of first substrate, this pixel electrode is arranged on the inside surface of second substrate, this second polaroid is arranged on the outside surface of second substrate, this pixel electrode, public electrode and the liquid crystal layer that is clipped in wherein constitute a pixel region, this pixel region tool one reflector space and a penetration region, it is characterized in that: one first optical compensation structure is set between this first substrate and first polaroid, one second optical compensation structure is set between this second substrate and second polaroid, and this liquid crystal layer is an optics compensate for bend structure.
2. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 1 is characterized in that: the position is a reflecting electrode at the pixel electrode of reflector space, and the position is a through electrode at the pixel electrode of penetration region; This reflecting electrode is higher than this through electrode, makes the thickness of liquid crystal layer that is positioned at reflector space be less than the thickness of liquid crystal layer that is positioned at penetration region.
3. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 1 is characterized in that: this liquid crystal layer is a horizontal direction matching, and its liquid crystal molecule tilt angle is that 0 degree is to 15 degree.
4. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 3, it is characterized in that: the angle of the absorption axes of this first Polarizer and liquid crystal layer alignment direction is roughly 0 degree, and the angle of the absorption axes of this second Polarizer and the first Polarizer absorption axes is roughly 90 degree.
5. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 4, it is characterized in that: this first optical compensation structure comprises on the compensating plate on one first, one second retardation plate on the compensating plate and one first, this on first on the compensating plate, second on the compensating plate, first retardation plate and first Polarizer be successively set on the outside surface of first substrate.
6. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 5, it is characterized in that: this second optical compensation structure comprises one first time compensating plate, one second time compensating plate and one first time retardation plate, and this first time compensating plate, second time compensating plate, first time retardation plate and second Polarizer are successively set on the outside surface of second substrate.
7. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 6, it is characterized in that: this on first compensating plate and first time compensating plate be C-plate compensating plate, this on second compensating plate and second time compensating plate be A-plate compensating plate, this on first retardation plate and first time retardation plate be quarter-wave plate.
8. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 7, it is characterized in that: the slow axis of this compensating plate on second and the angle of the first Polarizer absorption axes are 90 degree, and the slow axis of this retardation plate on first and the angle of the first Polarizer absorption axes are 45 to spend; The angle of compensating plate slow axis is 0 degree on the slow axis of this second time compensating plate and second, and the angle of retardation plate slow axis is 90 degree on the slow axis of first time retardation plate and first.
9. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 8 is characterized in that: this first optical compensation structure further comprises compensating plate on the 3rd, and compensating plate is arranged on first between the retardation plate and first Polarizer on the 3rd.
10. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 9 is characterized in that: compensating plate is an A-plate compensating plate on the 3rd, and the angle of its slow axis and the first Polarizer absorption axes is 90 degree.
11. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 4, it is characterized in that: this first optical compensation structure comprises on one first retardation plate on the compensating plate and one first, this on first on the compensating plate, first retardation plate and first Polarizer be successively set on the outside surface of first substrate.
12. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 11, it is characterized in that: this second optical compensation structure comprises one first time compensating plate and one first time retardation plate, and this first time compensating plate, first time retardation plate and second Polarizer are successively set on the outside surface of second substrate.
13. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 12 is characterized in that: this on first compensating plate and first time compensating plate be the biaxial compensation sheet, this on first retardation plate and first time retardation plate be quarter-wave plate.
14. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 13, it is characterized in that: the slow axis of this compensating plate on first and the angle of the first Polarizer absorption axes are 90 degree, and the slow axis of this retardation plate on first and the angle of the first Polarizer absorption axes are 45 to spend; The angle of compensating plate slow axis is 0 degree on the slow axis of this first time compensating plate and first, and the angle of retardation plate slow axis is 90 degree on the slow axis of first time retardation plate and first.
15. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 14 is characterized in that: this first optical compensation structure further comprises compensating plate on the 3rd, and compensating plate is arranged on first between the retardation plate and second Polarizer on the 3rd.
16. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 15 is characterized in that: compensating plate is an A-plate compensating plate on the 3rd, and the angle of its slow axis and the first Polarizer absorption axes is 90 degree.
17. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 6, it is characterized in that: this on first compensating plate and first time compensating plate be mixed C-plate compensating plate, this on second compensating plate and second time compensating plate be C-plate compensating plate, this on first retardation plate and first time retardation plate be quarter-wave plate.
18. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 17 is characterized in that: the slow axis of this retardation plate on first and the angle of the first Polarizer absorption axes are 45 degree.The angle of retardation plate slow axis is 90 degree on the slow axis of first time retardation plate and first.
19. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 18 is characterized in that: this first optical compensation structure further comprises compensating plate on the 3rd, and compensating plate is arranged on first between the retardation plate and first Polarizer on the 3rd.
20. semi-penetrating semi-reflecting type liquid crystal displaying device as claimed in claim 19 is characterized in that: compensating plate is an A-plate compensating plate on the 3rd, and the angle of its slow axis and the first Polarizer absorption axes is 90 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100347624A CN100437250C (en) | 2005-05-20 | 2005-05-20 | Semi-transmissive and semi-reflective liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100347624A CN100437250C (en) | 2005-05-20 | 2005-05-20 | Semi-transmissive and semi-reflective liquid crystal display device |
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| CN1866088A true CN1866088A (en) | 2006-11-22 |
| CN100437250C CN100437250C (en) | 2008-11-26 |
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| CNB2005100347624A Expired - Fee Related CN100437250C (en) | 2005-05-20 | 2005-05-20 | Semi-transmissive and semi-reflective liquid crystal display device |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1073823A (en) * | 1996-09-02 | 1998-03-17 | Hitachi Ltd | Active matrix type liquid crystal display device |
| EP1326129A1 (en) * | 2000-09-27 | 2003-07-09 | Matsushita Electric Industrial Co., Ltd. | Transreflective liquid crystal display |
| US6922219B2 (en) * | 2002-08-14 | 2005-07-26 | Lg. Philips Lcd Co., Ltd. | Transflective liquid crystal display |
| KR100713885B1 (en) * | 2003-04-14 | 2007-05-07 | 비오이 하이디스 테크놀로지 주식회사 | semi-transmitable type liquid crystal display |
| CN100504529C (en) * | 2004-04-15 | 2009-06-24 | 友达光电股份有限公司 | Pixel structure of semi-penetration and reflecting LCD panel |
| CN100483191C (en) * | 2004-08-25 | 2009-04-29 | 鸿富锦精密工业（深圳）有限公司 | Semi-penetration and semi-reflective liquid crystal display device |
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