CN205958897U - Low driving voltage blue phase liquid crystal display of narrow visual angle mode - Google Patents
Low driving voltage blue phase liquid crystal display of narrow visual angle mode Download PDFInfo
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- CN205958897U CN205958897U CN201620989113.3U CN201620989113U CN205958897U CN 205958897 U CN205958897 U CN 205958897U CN 201620989113 U CN201620989113 U CN 201620989113U CN 205958897 U CN205958897 U CN 205958897U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 76
- 230000000007 visual effect Effects 0.000 title abstract description 17
- 239000011521 glass Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 2
- 229920002120 photoresistant polymer Polymers 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 abstract 8
- 230000005684 electric field Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004988 Nematic liquid crystal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 108091092195 Intron Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model relates to a low driving voltage blue phase liquid crystal display of narrow visual angle mode. The device's constitution is included under to by last in proper order: polarizing on, + a membrane, last glass substrate, blue phase liquid crystal layer, electrode layer, convexity layer, lower glass substrate, - c membrane, - a membrane and lower polaroid, the electrode layer constitute the pixel electrode and NULL interval distribution by the pixel electrode and the NULL who distributes on the convexity layer, + a membrane be the fourth wave plate, typical retardation is 0.1375 micron, its slow axis direction is 0, 90 degree, 180 degrees or 270 degrees, - a membrane be the fourth wave plate, typical retardation is 0.1375 micron, its fast -axis direction's the number of degrees are the same with the number of degrees of + a membrane slow axis direction, the fast -axis direction of - c membrane be the z axle. The utility model provides it is complicated to have solved traditional narrow visual angle display mode electrode structure, and the compensation membrane is many, and the visual angle is asymmetric, the not high technological problem of contrast.
Description
Technical field
The utility model design be a kind of device of technical field of liquid crystal display, specifically a kind of narrow viewing angle pattern low
Driving voltage Blue-phase liquid crystal display device.
Background technology
In the information age, mobile phone, the electronic product such as panel computer have become as people's daily life, study, in office not
The part that can or lack.But, when people are in public place, personal information is easily revealed or stolen by others.So,
The liquid crystal display researching and developing a narrow viewing angle pattern has important practical significance for the protection of personal information.For in journey
In the application such as the people of middle office and the ATM in bank, narrow viewing angle display is all optimal selection.
In the last few years, the fast development with blue phase liquid crystal technology was it has been found that blue phase liquid crystal many can be rated as revolutionary character
Advantage.First, the response speed of sub- millisecond, than about fast 10 times of the response speed of current nematic liquid crystal display；Second,
During dark-state, it is optical isotropy, so, dark-state light leak is considerably less, can form high-contrast and uniform wide viewing angle.Its
Three, it is not necessary to oriented layer, can simplify manufacture craft, reduce production cost；Fourth, when the thickness of blue phase liquid crystal box exceedes necessarily
During value, transmitance becomes no longer sensitivity it is adaptable to make large-size screen monitors liquid crystal display for the thickness of liquid crystal cell.Due to blue phase liquid crystal
Above-mentioned excellent display characteristic can be assumed, started the upsurge of research blue phase liquid crystal in liquid crystal and display field.
But, the application for blue phase liquid crystal and development, it is faced with two big technological challenges.That is, driving voltage is too high and saturating
Cross rate relatively low.In order to reduce the driving voltage of blue phase liquid crystal display, improve transmitance, there has been proposed protruding electrode structure,
Wall shape electrode structure, split shape electrode structure, the scheme such as double-face electrode structure.Wherein, most representative with protruding electrode structure.
IPS blue phase liquid crystal display only need to can be realized as wide viewing angle display mould using a simple half-wave biaxial film
Formula, can realize colored display well.But, the scheme realizing the blue phase liquid crystal display of narrow viewing angle display pattern at present is equal
More complicated.For example, on the electric pole plate of three layers of electrode structure plus bias voltage is in order to realizing narrow viewing angle, and sub-pixel method
Etc. the electrode structure being required to complexity and loaded down with trivial details Compensation Design.Additionally, the narrow viewing angle pattern realized under such scheme, existing can
Vision area is asymmetric, the shortcomings of contrast is high.
Utility model content
The purpose of this utility model is to overcome shortcoming present in existing narrow viewing angle liquid crystal display technology it is proposed that one
Plant and realize the blue phase liquid crystal display that narrow viewing angle shows.In conventional narrow viewing angle display, it is all in wide viewing angle liquid crystal display
On the basis of device, increase special driving electrodes and type of drive, thus obtaining viewing angle control or realizing narrow viewing angle and show.?
In the controlled liquid crystal display in visual angle, no matter being to increase viewing angle control liquid crystal cell, or setting viewing angle control sub-pixel, also or
Setting viewing angle control electrode, all increases the difficulty of the manufacturing process of liquid crystal display；In pure narrow viewing angle nematic liquid crystal display
In, because employing special liquid crystal arrangement structure, the contrast of liquid crystal display is low, and visual angle is asymmetric；Controlled at visual angle
In blue phase liquid crystal display, when narrow viewing angle shows, contrast is low, liquid crystal device complex structure, drives also more complicated.This reality
With increasing bulge-structure on the basis of the new blue phase liquid crystal display in IPS, and attach an a film in top glass substrate,
One c film and an a film are attached respectively on lower glass substrate.Three uniaxial film are used for realizing the narrow of blue phase liquid crystal display
Visual angle display pattern.Protruding electrode structure achieves the low voltage drive of blue phase liquid crystal display simultaneously, improves light transmission rate.
The technical solution of the utility model is：
A kind of low driving voltage Blue-phase liquid crystal display device of narrow viewing angle pattern, the composition of this device is from top to bottom successively
Including：Upper polaroid, a film, top glass substrate, blue phase liquid crystal layer, electrode layer, convexity layer, lower glass substrate, c film, a film and
Down polaroid；Described electrode layer is made up of the pixel electrode being distributed on convexity layer and public electrode, pixel electrode and public
Electrode gap is distributed；
Described a film be quarter-wave plate, typical delay amount be 0.1375 μm, its slow-axis direction be 0 °, 90 degree, 180
Spend or 270 degree；Described a film is quarter-wave plate, and typical delay amount is 0.1375 μm, the number of degrees of its quick shaft direction and a
The number of degrees of film slow-axis direction are identical, also for 0 °, 90 degree, 180 degree or 270 degree；
The quick shaft direction of described c film is z-axis；
The thickness of described upper polaroid is 230 μm, and printing opacity direction of principal axis is 45 °, and the thickness of down polaroid is 230 μm, thoroughly
Optical axis direction is 45 °；Or, the printing opacity direction of principal axis of upper polaroid is 45 °, and the printing opacity direction of principal axis of down polaroid is 45 °；
Described pixel electrode and public electrode are transparent indium tin oxide material, and its potential is respectively：On pixel electrode
Apply positivity voltage, not applied voltage on public electrode；Thickness of electrode is 0.1～0.2 μm；Described pixel electrode and public
Electrode width is 1～15 μm, and length is length in pixels, can be adjusted according to pixel size.Its top view be rectangle or
Person's "the" shape.
Described convexity layer is silica or photoresist, highly for 1～10 μm, its top view can for rectangle or
"the" shape, width is 2～10 μm；In described convexity layer, raised cross sectional shape is that rectangle, trapezoidal, triangle or half are ellipse
Circle, the spacing between adjacent protrusion is 4～10 μm.
The thickness range of described blue phase liquid crystal layer is 5～20 μm, and meanwhile, this thickness is not less than the thickness of convexity layer.
Above-mentioned be not directed to connection scheme be upper and lower relation.
The above-mentioned content that is not directed to is known content.No longer repeat one by one here.
It is compared with the prior art, the beneficial effects of the utility model are：By the basis in IPS blue phase liquid crystal display
On, raised with making on public electrode in the pixel electrode of lower glass substrate, reduce blue phase liquid crystal using projected electrode and show
The driving voltage of device, transmitance brings up to 72% from 60%；And paste in a film attaching in top glass substrate and lower glass substrate
Attached c film and a film are in order to realize the narrow viewing angle display pattern of blue phase liquid crystal display.More efficiently be, the utility model
The technical scheme proposing solves traditional narrow viewing angle display pattern electrode structure complexity, and compensation film is many, and visual angle is asymmetric, contrast
Not high technical barrier.
By the detailed description below with reference to accompanying drawing, other side of the present utility model and feature become obvious.But should
This is known, this accompanying drawing is used for the purpose of the purpose design explained, not as the setting of the utility model coverage, this is
Because it is given as reference.
Brief description
Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail, wherein：
Fig. 1 is the structure principle chart of the low driving voltage blue phase liquid crystal display of narrow viewing angle pattern that embodiment proposes；
Fig. 2 is the low drive of the narrow viewing angle pattern that the Traditional IP S blue phase liquid crystal display that embodiment proposes is proposed with this enforcement
The electro-optical curve comparison diagram of dynamic voltage blue phase liquid crystal display；
Fig. 3 is the low drive of the narrow viewing angle pattern that the Traditional IP S blue phase liquid crystal display that embodiment proposes is proposed with this enforcement
The distribution map of equipotential lines and electric field line in dynamic voltage blue phase liquid crystal display.Fig. 3 (a) is Traditional IP S blue phase liquid crystal display；Figure
3 (b) is the blue phase liquid crystal display that this enforcement proposes；
Fig. 4 is the dark-state transmitance visual angle under narrow viewing angle display pattern for the IPS blue phase liquid crystal display that embodiment proposes
Figure.
Fig. 5 is the on state of transmitance visual angle under narrow viewing angle display pattern for the IPS blue phase liquid crystal display that embodiment proposes
Figure.
Fig. 6 be embodiment propose IPS blue phase liquid crystal display under narrow viewing angle display pattern etc. contrast visual angle figure.
Fig. 7 be embodiment propose low driving voltage blue phase liquid crystal display under narrow viewing angle display pattern, contrast with
Polar angle and azimuthal variation relation figure；Fig. 7 (a) is the variation relation figure with polar angle for the contrast；Fig. 7 (b) is contrast with side
The variation relation figure of parallactic angle.
Specific embodiment
Below in conjunction with accompanying drawing, enforcement of the present utility model is further described：The present embodiment is with the utility model technical side
Implemented under premised on case, give detailed embodiment and specific operating process, but be not meant to protection domain
It is only limitted to this.
Embodiment 1
The low driving voltage Blue-phase liquid crystal display device of narrow viewing angle pattern described in the utility model is as shown in figure 1, be somebody's turn to do
The composition of device includes from top to bottom successively：Upper polaroid 1, a film 2, top glass substrate 3, blue phase liquid crystal layer 4, electrode layer, convex
Aliquation 7, lower glass substrate 8, c film 9, a film 10 and down polaroid 11；Described electrode layer is by the picture being distributed on protuberance layer 7
Plain electrode 5 and public electrode 6 form, and pixel electrode 5 and public electrode 6 are spaced apart；
Described a film 2, c film 9, a film 10, can make incline direction during dark-state produce larger light leak, realize blue phase
The narrow viewing angle display pattern of liquid crystal display.
Described a film 2 is quarter-wave plate, and typical delay amount is 0.1375 μm, and slow-axis direction is 0 °；The phase of-c film 9
Position retardation is 0.075 μm, and quick shaft direction is z-axis；- a film 10 is quarter-wave plate, and typical delay amount is 0.1375 μm, soon
Direction of principal axis is 0 °.
The thickness of described upper polaroid 1 is 230 μm, and printing opacity direction of principal axis is -45 °, and the thickness of down polaroid 11 is 230 μ
M, printing opacity direction of principal axis is 45 °.
Described pixel electrode 5 and public electrode 6, for realizing the low voltage drive of blue phase liquid crystal display.Wherein, as
Apply positivity voltage, not applied voltage on public electrode 6 on plain electrode 5.
Described all electrodes are transparent tin indium oxide (ITO) material, and width is 2 μm, and length is length in pixels,
Its top view is rectangle, and described all thickness of electrode are 0.1 μm；Between the neighboring edge of pixel electrode 5 and public electrode 6
Spacing be 4 μm；
Pixel electrode 5 and public electrode 6 have been covered each by described convexity layer 7；
Raised layer material is silica, and dielectric constant is 3.8, and raised height is 5 μm, the bottom between adjacent protrusion
Spacing is 4 μm.
Individually raised in described convexity layer it is shaped as trapezoidal (going to the bottom a width of 2 microns, upper bottom width is 1 micron), its making
Method is identical with the preparation method of conventional lithography glue introns, is made using photoetching method, and the top view of bulge-structure is permissible
For rectangle, width is 2 μm.
The thickness of described blue phase liquid crystal layer is 10 μm.
The Kerr constanr K=13.7nm/V of described blue phase liquid crystal2, light wavelength lambda=550nm.
Fig. 2 give the utility model proposes the low driving voltage blue phase liquid crystal display of narrow viewing angle pattern with tradition
The electro-optical curve comparison diagram of IPS blue phase liquid crystal display.Can be learnt by contrast：The drive of Traditional IP S blue phase liquid crystal display
Dynamic voltage is 83V, and maximum light transmission rate is 60% accordingly.And the low driving voltage of the narrow viewing angle pattern proposing under the present embodiment
The driving voltage of blue phase liquid crystal display is 14V, and maximum light transmission rate is 71% accordingly.By using covering on bulge-structure
Driving electrodes, we successfully achieve the low voltage drive of IPS blue phase liquid crystal display, meet current main-stream non-crystalline silicon thin
The driving demand of film transistor.
Fig. 3 give the utility model proposes IPS blue phase liquid crystal display in equipotential lines and electric field line distribution map.Figure
3 (a) gives the distribution map of equipotential lines and electric field line in Traditional IP S blue phase liquid crystal display under the present embodiment.Fig. 3 (b) is given
The distribution map of equipotential lines and electric field line in the low driving voltage blue phase liquid crystal display of narrow viewing angle pattern under the present embodiment.Pass through
Contrast, we can be found that：The introducing of projected electrode, for traditional IPS blue phase liquid crystal display, is conducive to strengthening
Horizontal component of electric field intensity (horizontal direction electric field line density becomes big), is simultaneously also beneficial to strengthen electric field action in the depth of liquid crystal layer
(the horizontal direction electric field line density of raised top becomes big), thus reducing driving voltage, improves the purpose of light transmission rate.
Fig. 4 give the utility model proposes dark-state under narrow viewing angle display pattern for the IPS blue phase liquid crystal display when
Transmitance visual angle figure.Under narrow viewing angle display pattern, when polar angle is less than 20 °, transmitance is very little, and works as polar angle and increase from 20 °
When being added to 60 °, transmitance becomes increasing.When polar angle is very big, continue to increase with polar angle, transmitance becomes more and more again
Little.
Fig. 5 give the utility model proposes on state of under narrow viewing angle display pattern for the IPS blue phase liquid crystal display when
Transmitance visual angle figure.Close to facing under angle case, transmitance is than larger；Polar angle with viewing increases, and transmitance reduces.
Fig. 6 give IPS blue phase liquid crystal display under narrow viewing angle display pattern etc. contrast visual angle figure.From Fig. 6
It can be seen that：By using three simple uniaxial film it is possible to realize the narrow viewing angle display pattern of blue phase liquid crystal display.Example
As in 20 ° of polar angles, in 10 ° of polar angles, contrast is more than in the region more than 100 for the contrast in the region more than 10 for the contrast
1000 region is in 5 ° of polar angles.Additionally, in the range of 20 ° to 40 ° polar angles, contrast is respectively less than 10, in 40 ° to 60 ° polar angles
In the range of, contrast is even more and is less than 1.Can obtain：The low driving voltage blue phase liquid crystal display of narrow viewing angle display pattern can only
Enough having good viewing effect close under the angle faced, that is, realize the display effect of narrow viewing angle display.
Fig. 7 give the contrast of the low driving voltage blue phase liquid crystal display of narrow viewing angle pattern with polar angle with azimuthal
Variation relation figure.Fig. 7 (a) gives the variation relation figure with polar angle for the contrast；Fig. 7 (b) gives contrast with azimuthal
Variation relation figure.Fig. 7 (a) is directly perceived, qualitatively give under narrow viewing angle display pattern, and contrast is with the variation relation of polar angle.
When polar angle is more than 20 °, less than human eye acceptable contrast 10.When polar angle is more than 30 °, contrast is in less than 2,
Well below human eye acceptable scope.On the contrary, in the range of 20 ° of polar angles, with the reduction of polar angle, contrast carries rapidly
High, i.e. high-contrast can be formed in visible area.Fig. 7 (b) intuitively, qualitatively gives for specific polar angle value, contrasts
Degree is with azimuthal variation relation figure.As can be seen from the figure：For specific polar angle value, contrast is with azimuthal change
In a small range fluctuation.This explanation contrast on any azimuth is more or less the same, here it is why showing in narrow viewing angle
Under pattern, can be formed evenly and symmetrically etc. contrast visual angle figure.This can eliminate well under narrow viewing angle display pattern,
The visual impact being brought due to viewing azimuth difference.
Embodiment 2
Identical with the structure of embodiment 1, the quick shaft direction of the slow axis of+a film and-a film is ratated 90 degrees simultaneously, 180 degree or
The orientation angles that 270 degree of person, gained display effect is same as Example 1.
The utility model can also be similar to Example 1 using other equivalent structures, gained display effect, does not describe in detail
Content is also patent content of the present utility model.
The utility model unaccomplished matter is known technology.
Claims (3)
1. a kind of low driving voltage Blue-phase liquid crystal display device of narrow viewing angle pattern, it is characterized by the composition of this device is arrived from above
Under include successively：Upper polaroid, a film, top glass substrate, blue phase liquid crystal layer, electrode layer, convexity layer, lower glass substrate, c
Film, a film and down polaroid；Described electrode layer is made up of the pixel electrode being distributed on convexity layer and public electrode, pixel electricity
Pole and public electrode are spaced apart；
Described a film is quarter-wave plate, and typical delay amount is 0.1375 micron, and its slow-axis direction is 0 °, 90 degree, 180 degree
Or 270 degree；Described a film is quarter-wave plate, and typical delay amount is 0.1375 micron, the number of degrees of its quick shaft direction and a
The number of degrees of film slow-axis direction are identical；
The quick shaft direction of described c film is z-axis；
The thickness of described upper polaroid is 230 microns, and printing opacity direction of principal axis is 45 °, and the thickness of down polaroid is 230 microns, thoroughly
Optical axis direction is 45 °；Or, the printing opacity direction of principal axis of upper polaroid is 45 °, and the printing opacity direction of principal axis of down polaroid is 45 °；
Described pixel electrode and public electrode are transparent indium tin oxide material, and its potential is respectively：Apply on pixel electrode
Positivity voltage, not applied voltage on public electrode；Thickness of electrode is 0.1～0.2 micron；Described pixel electrode and common electrical
Pole width is 1～15 micron, and length is length in pixels.
2. the low driving voltage Blue-phase liquid crystal display device of narrow viewing angle pattern as claimed in claim 1, it is characterized by described
Convexity layer be silica or photoresist, highly for 1～10 micron, its top view can be rectangle or "the" shape,
Width is 2～10 microns；In described convexity layer, raised cross sectional shape is rectangle, trapezoidal, triangle or half elliptic, phase
Spacing between adjacent projection is 4～10 microns.
3. the low driving voltage Blue-phase liquid crystal display device of narrow viewing angle pattern as claimed in claim 1, it is characterized by described
The thickness range of blue phase liquid crystal layer be 5～20 microns, meanwhile, this thickness is not less than the thickness of convexity layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620989113.3U CN205958897U (en) | 2016-08-29 | 2016-08-29 | Low driving voltage blue phase liquid crystal display of narrow visual angle mode |
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| CN201620989113.3U CN205958897U (en) | 2016-08-29 | 2016-08-29 | Low driving voltage blue phase liquid crystal display of narrow visual angle mode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125441A (en) * | 2016-08-29 | 2016-11-16 | 河北工业大学 | A kind of low driving voltage blue phase liquid crystal display of narrow field-of-view mode |
| CN112034655A (en) * | 2020-08-19 | 2020-12-04 | 武汉华星光电技术有限公司 | Liquid crystal display panel |
-
2016
- 2016-08-29 CN CN201620989113.3U patent/CN205958897U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125441A (en) * | 2016-08-29 | 2016-11-16 | 河北工业大学 | A kind of low driving voltage blue phase liquid crystal display of narrow field-of-view mode |
| CN106125441B (en) * | 2016-08-29 | 2023-03-17 | 河北工业大学 | Low-driving-voltage blue-phase liquid crystal display in narrow viewing angle mode |
| 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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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 |