CN102650778A - Semi-transparent and semi-reflective blue phase liquid crystal display device - Google Patents
Semi-transparent and semi-reflective blue phase liquid crystal display device Download PDFInfo
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- CN102650778A CN102650778A CN2012101383168A CN201210138316A CN102650778A CN 102650778 A CN102650778 A CN 102650778A CN 2012101383168 A CN2012101383168 A CN 2012101383168A CN 201210138316 A CN201210138316 A CN 201210138316A CN 102650778 A CN102650778 A CN 102650778A
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- 239000000463 material Substances 0.000 claims abstract description 14
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- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention relates to a semi-transparent and semi-reflective blue phase liquid crystal display device comprising a first substrate, a second substrate, a liquid crystal layer which is clamped between the first substrate and the second substrate, a plurality of bulges and a plurality of electrodes. An area between the first and second substrates is divided into a plurality of transmission areas and a plurality of reflection areas, and the transmission areas and the reflection areas are lined in a staggered way. The liquid crystal layer adopts the same blue phase liquid crystal material in the transmission areas and the reflection areas. The bulges which are arranged on the first substrate are protruded from the first substrate to the second substrate, and each bulge is arranged at a position of the reflection area which corresponds to the bulge. The electrodes are made of reflective materials, and each electrode is covered on a corresponding bulge. When the semi-transparent and semi-reflective blue phase liquid crystal display device is electrified, the optical path difference in the reflection areas is matched with that of the transmission areas; and meanwhile, compared with an existing semi-transparent and semi-reflective liquid crystal display device, the semi-transparent and semi-reflective blue phase liquid crystal display device has higher penetration rate and lower driving voltage.
Description
Technical field
The present invention relates to the display technique field, and be particularly related to a kind of Transflective blue phase liquid crystal display device.
Background technology
In recent years, along with the development of display technique, liquid crystal indicator more and more is widely used in as in the electronic products such as TV, computing machine.
In existing liquid crystal indicator,, can be divided into three kinds of transmission-type, reflective and Transflectives according to the difference of the light source type that it adopted.The Transflective liquid crystal indicator is read down and the reflection-type liquid-crystal display device advantage of reading under the sunlight out of doors at the low light level and unglazed with transmissive liquid crystal display device; It both can be in indoor use; Also can be in outdoor application; Therefore, the Transflective liquid crystal indicator is widely used in the display device like portable mobile electronic products such as smart mobile phone, panel computers.
Wherein, because the transmission area of transmitting/reflecting LCD adopts the backlight light-emitting mode, light only need pass liquid crystal layer once; And the echo area uses surrounding environment light as light source, so light need pass liquid crystal layer twice; This situation makes that the phase delay of light through the echo area time is 2 times of transmission area, has caused transmission area and echo area to be difficult to obtain simultaneously identical photoelectric characteristic.According to the difference of principle of work, the Transflective liquid crystal indicator can be divided into single box thick (Single-cell-gap) Transflective liquid crystal indicator and dual-box thick (Double-cell-gap) Transflective liquid crystal indicator.The thick Transflective liquid crystal indicator of single box is easy to make, but transmission area and echo area phase delay are not easy coupling; Dual-box thick Transflective liquid crystal indicator is through with thick thick 2 times of echo area liquid crystal cell that are set to of the liquid crystal cell of transmission area; Thereby make light in the equating of the phase delay when the echo area and transmission area, to reach the purpose that obtains identical transmission simultaneously and reflect electro-optical characteristic in transmission area and echo area.But dual-box thick Transflective liquid crystal indicator has caused its manufacturing process's more complicated owing to the thick demand of the different boxes with the echo area of transmission area, and has increased production cost; Simultaneously, owing to need the voltage that differ from one another be offered the transparency electrode of each echo area and transmission area, so manufacturing process further is complicated; And because the thick difference of liquid crystal cell causes the response time of transmission area and echo area unequal.
The liquid crystal that traditional Transflective liquid crystal indicator adopts is divided into three kinds of nematic phase, smectic phase and cholesteric phases; For the fast moving scene; Liquid crystal indicator phenomenons such as streaking and dynamic fuzzy can occur usually, and its main cause is owing to the response time of liquid crystal molecule causes inadequately soon.
Compare with liquid crystal material with present widely used liquid crystal display; Blue phase liquid crystal has following four outstanding advantages: the response time of (1) blue phase liquid crystal is in inferior millisecond scope; It need not to adopt overdrive technique (Over Drive); Promptly can realize the high-speed driving that 240Hz is above, thereby can effectively reduce the dynamic fuzzy of moving image, adopt red-green-blue light emitting diode (RGB-LED) when doing backlight; Need not color filter film, utilize blue phase liquid crystal can realize that promptly the field sequential color sequential shows; (2) blue phase liquid crystal does not need the necessary oriented layer of other various display modes, has not only simplified manufacturing process, has reduced cost yet; (3) on the macroscopic view, blue phase liquid crystal is optically isotropic, thereby makes blue phase liquid crystal display device have the good characteristics of wide, the dark attitude in visual angle; (4) need only the thick penetration depth that surpasses electric field of blue phase liquid crystal box box, the variation that the liquid crystal cell box is thick just can be ignored the influence of transmissivity, and this specific character is particularly suitable for making giant-screen or veneer liquid crystal indicator.Yet before the blue phase liquid crystal display device widespread use, still have two big technical barriers to need to be resolved hurrily: WV is high and optical efficiency is low.
Conventional planar conversion (In-Plane Switching; Be called for short IPS) blue phase liquid crystal display device; Be called for short (IPS BP-LCD); Be to utilize the horizontal component of electric field of generation in the strip like transparent electrode gap of lower glass substrate inside surface to make the blue phase liquid crystal molecule change the anisotropy phase into by isotropic phase, owing to birefringence effect is realized the liquid crystal indicator of bright attitude, existing IPS blue phase liquid crystal display device (IPS BP-LCD) all is to be employed in lower glass substrate inside surface etching strip shaped electric poles; Therefore the transverse electric field of the strip shaped electric poles upper area of IPS structure blue phase liquid crystal display device very a little less than, the space of its electrode top is very little to the contribution of light penetration.Shown in Figure 1 is the distribution plan in the optical transmittance contribution zone of traditional I PS structure blue phase liquid crystal display device when adopting indium tin oxide (Indium Tin Oxide is called for short ITO) electrode, and wherein electrode width and spacing all are set at 5 μ m; Shown in Figure 2 is the optical transmittance contribution regional distribution chart of traditional I PS structure blue phase liquid crystal display device when adopting aluminium (Al) electrode, and wherein electrode width and spacing all are set at 5 μ m; Shown in Figure 3 is voltage-penetrance (voltage dependent transmittance curve is called for short VT) curve contrast synoptic diagram that traditional I PS structure blue phase liquid crystal display device adopts ITO electrode and Al electrode.Can find out that by Fig. 1 to Fig. 3 the interval region between the IPS structure blue phase liquid crystal display device electrode has been contributed main optical transmittance, change lighttight Al electrode into by the ITO electrode after, optical transmittance has reduced and has been no more than 10%.
Summary of the invention
Based on existing problem in existing Transflective liquid crystal indicator and the IPS structure blue phase liquid crystal display device; The invention provides the thick Transflective blue phase liquid crystal display device of a kind of single box; It can effectively solve the problem that transmission area and echo area phase delay are not easy to mate in the thick Transflective liquid crystal indicator of existing single box; Simultaneously, compare with existing Transflective liquid crystal indicator, it has higher penetrating rate and lower driving voltage.
Particularly, a kind of Transflective blue phase liquid crystal display device of providing of the embodiment of the invention.Wherein, this Transflective blue phase liquid crystal display device comprises first substrate, second substrate, is located in the liquid crystal layer between first substrate and second substrate, a plurality of convexity and a plurality of electrode.Zone between first substrate and second substrate is divided into a plurality of regional transmissions and a plurality of reflector space, and a plurality of regional transmissions and a plurality of reflector space are alternately arranged.Liquid crystal layer adopts identical blue phase liquid crystal material in a plurality of regional transmissions with a plurality of reflector spaces.This first substrate is provided with a plurality of convexities, and each convexity is positioned at the position of this reflector space corresponding with it, and a plurality of convexity is outstanding to second substrate by first substrate.A plurality of electrodes are processed by reflecting material, and each electrode covers on the convexity corresponding with it.Under "on" position, the optical path difference of the liquid crystal layer in a plurality of reflector spaces and the optical path difference of a plurality of regional transmissions are complementary.
Further, the width of each this electrode equals the width of this reflector space corresponding with it.
Further; This first substrate comprises first glass substrate, first quarter-wave plate and first polaroid; This a plurality of convexing to form on this first glass substrate, this first quarter-wave plate and this first polaroid are set in turn in the side of this first glass substrate away from this liquid crystal layer.This second substrate comprises second glass substrate, second quarter-wave plate and second polaroid, and this second quarter-wave plate and this second polaroid are set in turn in the side of this second glass substrate away from this liquid crystal layer.
Further, the optical axis of the optical axis of this first quarter-wave plate and this second quarter-wave plate is perpendicular, and the light transmission shaft of the light transmission shaft of this first polaroid and this second polaroid is perpendicular.
Further, the optical axis of this first quarter-wave plate for example is 0 degree, and the optical axis of this second quarter-wave plate for example is 90 degree, and the light transmission shaft of this first polaroid for example is-45 degree, and the light transmission shaft of this second polaroid for example is 45 degree.
Further, these a plurality of convexities comprise a plurality of strip projected parts that laterally arrange, and these a plurality of electrodes comprise a plurality of strip shaped electric poles that laterally arrange.
Further, this each strip projected parts for example is arranged at the middle part of this each strip shaped electric poles corresponding with it.
Further, the cross section of these a plurality of strip projected parts for example is trapezoidal, circular arc or triangle.
Further, these a plurality of convexities are for example processed by silicon nitride.
Further, the reflecting material that forms these a plurality of electrodes is a metal material.
The present invention changes by reflecting material through the electrode with traditional I PS structure blue phase liquid crystal display device and processes, and simultaneously convexity is set below electrode, makes the electrode upper area also form transverse electric field.Thereby the electrode upper area at IPS structure blue phase liquid crystal display device constitutes reflector space, and the electrode gap zone constitutes regional transmission, because reflector space is formed with transverse electric field, so the blue phase liquid crystal in the reflector space can obtain enough birefringences.Optical path difference through coupling regional transmission and reflector space makes to have same phase at regional transmission and reflector space, reaches the purpose of phase matching.The present invention is with in the Traditional IP S structure blue phase liquid crystal display device the less electrode top of optical transmittance contribution being provided with reflector space; Obtain higher reflectivity when losing less optical transmittance; And compared to Transflective liquid crystal indicator of the prior art, it has higher penetrating rate and lower driving voltage.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of instructions, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Shown in Figure 1 is the distribution plan that traditional I PS structure blue phase liquid crystal display device adopts the optical transmittance contribution zone of ITO electrode.
Shown in Figure 2 is the distribution plan that traditional I PS structure blue phase liquid crystal display device adopts the optical transmittance contribution zone of Al electrode.
Shown in Figure 3 is the VT curve comparison diagram that traditional I PS structure blue phase liquid crystal display device adopts ITO electrode and Al electrode.
Shown in Figure 4 is the structural representation of Transflective blue phase liquid crystal display device in the embodiment of the invention.
Shown in Figure 5 is the part-structure synoptic diagram of the convexity in the Transflective blue phase liquid crystal display device and electrode in the embodiment of the invention.
Shown in Figure 6 is VT, the VR curve map of Transflective blue phase liquid crystal display device in the embodiment of the invention.
Fig. 7 a is the VR curve map of first group of analog sample of the embodiment of the invention.
Fig. 7 b is the VT curve map of first group of analog sample of the embodiment of the invention.
Fig. 8 a is the VR curve map of second group of analog sample of the embodiment of the invention.
Fig. 8 b is the VT curve map of second group of analog sample of the embodiment of the invention.
Fig. 9 a is the VR curve map of the 3rd group of analog sample of the embodiment of the invention.
Fig. 9 b is the VT curve map of the 3rd group of analog sample of the embodiment of the invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To embodiment, method, step, structure, characteristic and the effect of the Transflective blue phase liquid crystal display device that proposes according to the present invention, specify as after.
Describe specific embodiment below with reference to accompanying drawings more fully, wherein show embodiments of the invention.Yet the present invention may be embodied as many multi-form, and should not be construed the embodiment that is confined to provide here; On the contrary, provide these embodiment to make that the disclosure is comprehensive and complete, and passed on scope of the present invention fully to those skilled in the art.Identical reference number is represented similar or similar elements all the time.
The following embodiment of the present invention mainly is that the electrode with traditional I PS structure blue phase liquid crystal display device changes by reflecting material and processes, and simultaneously convexity is set below electrode, makes the electrode upper area also form transverse electric field.The electrode upper area constitutes reflector space, and the electrode gap zone constitutes regional transmission, because reflector space is formed with transverse electric field, so the blue phase liquid crystal in the reflector space can obtain enough birefringences.Through the optical path difference of coupling regional transmission and reflector space, reach the purpose that half-transmitting and half-reflecting shows.Be set to reflector space for the less electrode upper area of optical transmittance contribution in the present invention's traditional I PS blue phase liquid crystal display device structure; Thereby compared to Transflective liquid crystal indicator of the prior art, it has higher penetrating rate and lower driving voltage.
Shown in Figure 4 is the structural representation of the Transflective blue phase liquid crystal display device of one embodiment of the invention.As shown in Figure 4, in the present embodiment, Transflective blue phase liquid crystal display device 10 comprise first substrate 12, second substrate 14 and be located in first substrate 12 and second substrate 14 between liquid crystal layer (liquid crystal layer) 16.
In present embodiment; Transflective blue phase liquid crystal display device 10 also comprises and is arranged at a plurality of protruding 18 on first substrate 12; Each protruding 18 be positioned at this reflector space R corresponding with it the position, and should a plurality of protruding 18 give prominence to second substrate 14 by first substrate 12.A plurality of protruding 18 can be the strip projected parts that laterally arranges, its cross section can for but be not limited to trapezoidal, circular arc or triangle.A plurality of protruding 18 can be by silicon nitride (Si
3N
4) wait stupalith to process, but the present invention is not as limit.
Transflective blue phase liquid crystal display device 10 also comprises a plurality of electrodes 20 that are arranged on first substrate 12, and in present embodiment, a plurality of electrode 20 is processed by reflecting material, for example adopts metal materials such as aluminium.A plurality of electrodes 20 comprise a plurality of pixel electrodes 200 and a plurality of public electrode 202, and a plurality of pixel electrodes 200 are electrically insulated with a plurality of public electrodes 202 each other, and a plurality of pixel electrode 200 and a plurality of public electrode 202 can be positioned on the same plane.Concrete, a plurality of pixel electrodes 200 and a plurality of public electrode 202 all can be the strip shaped electric poles that laterally arranges, and a plurality of pixel electrodes 200 are alternately arranged with a plurality of public electrodes 202.That is to say that the Transflective blue phase liquid crystal display device 10 of present embodiment can be the Transflective blue phase liquid crystal display device of IPS structure, yet the present invention is not limited to this, it also can be the Transflective blue phase liquid crystal display device of other structures.Further, in present embodiment, a plurality of bearing of trends of protruding 18 are parallel to the bearing of trend of a plurality of electrodes 20.Each electrode 20 all covers on the convexity corresponding with it 18, and the width of each electrode 20 equals the width of the reflector space R corresponding with it.That is to say that each protruding 18 all is covered by in the electrode corresponding with it 20, and the width of each electrode 20 width of corresponding reflector space R just.Preferably, strip projected parts 18 is provided with corresponding to the middle part of each strip shaped electric poles 20 corresponding with it.
In present embodiment, first substrate 12 also comprises first glass substrate 120 that is provided with near liquid crystal layer 16, is set in turn in first quarter-wave plate (1/4 λ plate) 122 and first polaroid (polarizer) 124 of first glass substrate 120 away from liquid crystal layer 16 1 sides.Second substrate 14 also comprises second glass substrate 140 that is provided with near liquid crystal layer 16, is set in turn in second quarter-wave plate 142 and second polaroid 144 of second glass substrate 140 away from liquid crystal layer 16 1 sides.In present embodiment, a plurality of protruding 18 directly are formed on first glass substrate 120.
Preferably, the optical axis of second quarter-wave plate 142 is perpendicular to the optical axis of first quarter-wave plate 122, and the light transmission shaft of second polaroid 144 is perpendicular to the light transmission shaft of first polaroid 124.More specifically, in present embodiment, the optical axis of first quarter-wave plate 122 can be 0 degree, and the optical axis of second quarter-wave plate 142 can be 90 degree, and the light transmission shaft of first polaroid 124 can be-45 degree, and the light transmission shaft of second polaroid 144 can be 45 degree.
To combine Fig. 4 specifically to introduce the mode of operation of the Transflective blue phase liquid crystal display device 10 of present embodiment below.
Please with reference to Fig. 4; When not powering up; At regional transmission T, become circularly polarized light behind first quarter-wave plate 122 that light A that backlight sends is 0 degree for first polaroid 124 and the optical axis of negative 45 degree through light transmission shaft, because when not powering up; Blue phase liquid crystal is isotropy (isotropic); Therefore circularly polarized light can pass blue phase liquid crystal layer 16 and reaches second glass substrate 140, and circularly polarized light is the linearly polarized light that becomes 45 degree behind second quarter-wave plate 142 of 90 degree through optical axis, so light transmission shaft is that second polaroid 144 of 45 degree can stop that this linearly polarized light makes regional transmission T present dark attitude.At reflector space R; Surround lighting is that second polaroid 144 and the light transmission shaft of 45 degree is to become left circularly polarized light behind second quarter-wave plate 142 of 90 degree through optical axis; Through isotropic blue phase liquid crystal layer 16 and through after the reflection of electrode 20; Left circularly polarized light becomes right-circularly polarized light and passes second quarter-wave plate 142 that light transmission shaft is 90 degree for the second time; Right-circularly polarized light becomes the linearly polarized light of negative 45 degree and can't be second polaroid 144 of 45 degree through light transmission shaft, and therefore, reflector space R also presents dark attitude.After applying voltage; Owing to be provided with a plurality of protruding 18; Make electrode 20 tops and electrode 20 produce transverse electric field near the part of regional transmission T; This transverse electric field and longitudinal electric field stack form tilting electric field; Cause the phase delay (phase retardation) of blue phase liquid crystal in the reflector space R can be optimised for phase delay half the of regional transmission T, thereby realize bright attitude, make VT curve consistent with VR curve convergence (please with reference to Fig. 6) under identical driving voltage; That is to say that the Transflective blue phase liquid crystal display device in the embodiment of the invention can adopt identical driving voltage, with the optical path difference of removing to mate regional transmission and reflector space with a kind of gamma of driving curve.
Concrete, can reach the coupling of VT curve and VR curve through optimizing the height or the shape of electrode 20 width, spacing and convexity 18., in the present embodiment, be that trapezoidal convexity is that example is elaborated to the influence of optimizing degree with regard to above-mentioned parameter specifically please with cross sectional shape with reference to Fig. 5.W0 representes the spacing between per two adjacent electrodes 20 among Fig. 5; W1 representes the width of each electrode 20; W2 is each bottom width of protruding 18, and W3 is each top width of protruding 18, and H1 is the thickness of electrode 20; H2 is each height of protruding 18, and α is the angle of each protruding 18 side and bottom surface.To specify with three groups of analog samples below, in these three groups of analog samples, the Kerr constanr of liquid crystal layer 16 is set at 12.1 nm/v
2, thickness setting is 6 μ m.
First group of analog sample is used for explaining W0, the W1 influence to VT, VR curve, (comprises sample S1, S2 in first group of analog sample; S3), W0+W1 all is set to 10 μ m, and W2 all is set to 1.5 μ m; α all is set to 84 degree, and H1 all is set to 0.1 μ m, and H2 all is set to 2 μ m.In sample S1, W1/W0 is set to 4 μ m/6 μ m; In sample S2, W1/W0 is set to 5 μ m/5 μ m; In sample S3, W1/W0 is set to 6 μ m/4 μ m.Can find out that by Fig. 7 a and Fig. 7 b along with reducing of W0, just along with the reducing of regional transmission T, driving voltage V and transmitance all reduce thereupon.At reflector space R, along with the increase of W1, reflectivity and driving voltage also can increase.
Second group of analog sample is used for explaining the influence of W2 to VT, VR curve, and in second group of analog sample (comprise sample S4, S5, S6), W0 and W1 all are set to 5 μ m, and α all is set to 87 degree, and H1 all is set to 0.1 μ m, and H2 all is set to 2 μ m.In sample S4, W2 is set to 1 μ m; In sample S5, W2 is set to 1.5 μ m; In sample S6, W2 is set to 2 μ m.Can find out by Fig. 8 a and Fig. 8 b, W2 to the influence of VR curve obviously greater than its influence, at reflector space R to the VT curve; Along with the increase of W2, that is to say that driving voltage also can reduce along with the reducing of the spacing of adjacent two convexities 18; At regional transmission T; Along with the increase of W2, driving voltage also can reduce, but transmitance can not change basically.
The 3rd group of analog sample is used for explaining the influence of H2 to VT, VR curve, and in the 3rd group of analog sample (comprise sample S7, S8, S9), W0 and W1 all are set to 5 μ m, and W2 all is set to 1.5 μ m, and α all is set to 87 degree, and H1 all is set to 0.1 μ m.In sample S7, H2 is set to 1 μ m; In sample S8, H2 is set to 1.5 μ m; In sample S9, H2 is set to 2 μ m.Can be found out by Fig. 9 a and Fig. 9 b, along with the increase of H2, that is to say the increase along with usable reflection space and transverse electric field, reflectivity can increase and driving voltage can reduce.At regional transmission T, along with the increase of H2, transmitance can not change but driving voltage can reduce.
Through top three groups of analog samples, can find out, can be through optimizing electrode width, spacing and protruding height or shape, reach the coupling of VT curve and VR curve under the same drive voltage.
In sum, the present invention changes by reflecting material through the electrode with traditional I PS blue phase liquid crystal display device and processes, and simultaneously convexity is set below electrode, makes the electrode upper area also form transverse electric field.The electrode upper area constitutes reflector space, and the electrode gap zone constitutes regional transmission, because reflector space is formed with transverse electric field, so the blue phase liquid crystal in the reflector space can obtain enough birefringences.Through the optical path difference of coupling regional transmission and reflector space, reach the purpose that half-transmitting and half-reflecting shows.The present invention is with in the Traditional IP S blue phase liquid crystal display device the less electrode top of optical transmittance contribution being become reflector space; Obtain higher reflectivity when losing less optical transmittance; Thereby form the blue phase liquid crystal display device of Transflective, it is compared to existing Transflective liquid crystal indicator, and its regional transmission has identical phase delay with reflector space; Thereby can utilize identical voltage to drive; Simultaneously, compare with existing Transflective liquid crystal indicator, it has higher penetrating rate and lower driving voltage.
It is understandable that; First quarter-wave plate that the foregoing description provides, second quarter-wave plate; And first polaroid, second polaroid all can exchange simultaneously; Wherein each direction of principal axis of each optical sheet is merely the Design Theory value, wherein quadrature, the number of degrees parallel and angle are not strict is limited to this, this instructions only is that example describes with the preferred forms; Perhaps also a little deviation can appear based on other considerations with upper angle in the actual fabrication process; As long as do not influence enforcement of the present invention, in the actual fabrication process or based on the situation of a little deviation that other considerations are occurred, all fall within the protection domain of claims of the present invention with upper angle.In addition, those skilled in the art's putting in order and/or each direction of principal axis of each optical sheet between can also each optical sheet of appropriate change all can as long as can reach the present invention's purpose.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (10)
1. Transflective blue phase liquid crystal display device comprises:
First substrate;
Second substrate is oppositely arranged with this first substrate, and the zone between this first substrate and this second substrate is divided into a plurality of regional transmissions and a plurality of reflector space, and these a plurality of regional transmissions are alternately arranged with these a plurality of reflector spaces;
Liquid crystal layer is arranged between this first substrate and this second substrate, and this liquid crystal layer adopts identical blue phase liquid crystal material in a plurality of reflector spaces of these a plurality of regional transmissions and this;
A plurality of convexities, these a plurality of convexities are arranged on this first substrate, and these a plurality of convexities are outstanding to this second substrate by this first substrate, and each convexity is positioned at the position of this reflector space corresponding with it; And
A plurality of electrodes; These a plurality of electrodes are processed by reflecting material; Each this electrode covers on this convexity corresponding with it, and these a plurality of electrodes comprise a plurality of public electrodes and a plurality of pixel electrode, and these a plurality of public electrodes and a plurality of pixel electrode are electrically insulated each other and alternately arrange; Under "on" position, the optical path difference of the liquid crystal layer in these a plurality of reflector spaces is complementary with the optical path difference of these a plurality of regional transmissions.
2. Transflective blue phase liquid crystal display device as claimed in claim 1 is characterized in that: the width of each this electrode equals the width of this reflector space corresponding with it.
3. Transflective blue phase liquid crystal display device as claimed in claim 1 is characterized in that:
This first substrate comprises first glass substrate, first quarter-wave plate and first polaroid; This a plurality of convexing to form on this first glass substrate, this first quarter-wave plate and this first polaroid are set in turn in the side of this first glass substrate away from this liquid crystal layer; And
This second substrate comprises second glass substrate, second quarter-wave plate and second polaroid, and this second quarter-wave plate and this second polaroid are set in turn in the side of this second glass substrate away from this liquid crystal layer.
4. Transflective blue phase liquid crystal display device as claimed in claim 3; It is characterized in that: the optical axis of the optical axis of this first quarter-wave plate and this second quarter-wave plate is perpendicular, and the light transmission shaft of the light transmission shaft of this first polaroid and this second polaroid is perpendicular.
5. Transflective blue phase liquid crystal display device as claimed in claim 4; It is characterized in that: the optical axis of this first quarter-wave plate is 0 degree; The optical axis of this second quarter-wave plate is 90 degree, and the light transmission shaft of this first polaroid is-45 degree, and the light transmission shaft of this second polaroid is 45 degree.
6. Transflective blue phase liquid crystal display device as claimed in claim 1 is characterized in that: these a plurality of convexities comprise a plurality of strip projected parts that laterally arrange, and these a plurality of electrodes comprise a plurality of strip shaped electric poles that laterally arrange.
7. Transflective blue phase liquid crystal display device as claimed in claim 6 is characterized in that: this each strip projected parts is arranged at the middle part of this each strip shaped electric poles corresponding with it.
8. Transflective blue phase liquid crystal display device as claimed in claim 6 is characterized in that: the cross section of these a plurality of strip projected parts is trapezoidal, circular arc or triangle.
9. Transflective blue phase liquid crystal display device as claimed in claim 1 is characterized in that: these a plurality of convexities are processed by silicon nitride.
10. Transflective blue phase liquid crystal display device as claimed in claim 1 is characterized in that: the reflecting material that forms these a plurality of electrodes is a metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210138316.8A CN102650778B (en) | 2012-05-07 | 2012-05-07 | Semi-transparent and semi-reflective blue phase liquid crystal display device |
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| CN105093665A (en) * | 2015-09-22 | 2015-11-25 | 京东方科技集团股份有限公司 | Semi-transmitting and semi-reflecting display panel and semi-transmitting and semi-reflecting display device |
| CN105137677A (en) * | 2015-10-09 | 2015-12-09 | 河北工业大学 | Blue-phase liquid crystal display device |
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| US10598982B2 (en) | 2017-12-27 | 2020-03-24 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display screen |
| CN109212825A (en) * | 2018-01-08 | 2019-01-15 | 友达光电股份有限公司 | Optical diaphragm and display module |
| CN109212825B (en) * | 2018-01-08 | 2021-07-20 | 友达光电股份有限公司 | Optical film and display module |
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| CN112034655A (en) * | 2020-08-19 | 2020-12-04 | 武汉华星光电技术有限公司 | Liquid crystal display panel |
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