CN101571649B - Optical-compensation bent liquid crystal display panel - Google Patents
Optical-compensation bent liquid crystal display panel Download PDFInfo
- Publication number
- CN101571649B CN101571649B CN200810043312A CN200810043312A CN101571649B CN 101571649 B CN101571649 B CN 101571649B CN 200810043312 A CN200810043312 A CN 200810043312A CN 200810043312 A CN200810043312 A CN 200810043312A CN 101571649 B CN101571649 B CN 101571649B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- projection
- display panels
- optical
- gradient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention relates to an optical-compensation bent liquid crystal display panel which comprises an upper substrate, a lower substrate and a liquid crystal layer. The upper substrate and the lower substrate are mutually oppositely arranged in parallel, the liquid crystal layer is arranged between the upper substrate and the lower substrate, and the dielectric anisotropism of liquid crystal molecules in the liquid crystal layer is positive; sloping protruding graphs are respectively formed on the upper substrate and the lower substrate, and a friction-free negative orientation layer is coatedon the surface of either sloping protruding graph. The liquid crystal display can obtain a wide visual angle and obtain a bent aligning state without voltage application so as to greatly simplify the production technology, decrease the production cost and improve the display effect.
Description
Technical field
The present invention relates to a kind of display panels, particularly a kind of optical-compensation bent liquid crystal display panel.
Background technology
(1iquid crystal display LCD) becomes one of flat-panel monitor with the fastest developing speed with advantages such as it are light, thin to liquid crystal indicator gradually.But compare with cathode-ray tube display; Thin-film transistor LCD device (Thin Film Transistor; TFT-LCD) visual angle relative narrower, this has just brought very big limitation for it in the application to strict high-end field, visual angle, like fields such as Aero-Space, medical treatment.Along with the fast development of LCD field wide viewing angle technology, the visual angle that at present a lot of producers are devoted to widen liquid crystal indicator.
The visual angle problem is that the optical anisotropy by liquid crystal molecule causes and since light pass through from different perspectives liquid crystal molecule the light path of process different, so its display brightness effect is different, thereby causes the visual angle problem.Some producers increase the visual angle through on common twisted-nematic (TN) type display panels, attaching the visual angle expanded film.This visual angle expanded film is a kind of transparent wide compensation film for angular field of view of birefraction, and this visual angle expanded film is used to compensate the phase delay that causes owing to the TN box, to realize the purpose at wide visual angle.The technological counter plate production technology of visual angle expanded film changes less, therefore is widely used.Yet because the visual angle expanded film fixes, can not compensate any GTG angle, so the intrinsic gray-scale inversion phenomenon of TN pattern still exists, long and aperture opening ratio of TN mode response time is low simultaneously etc., and shortcoming can't improve.
For improving the visual angle problem, the wide visual angle of vertical orientated (VA) pattern that also proposed technology.This VA mode LCD makes long axis of liquid crystal molecule perpendicular to substrate when making alive not, only slightly tilts near protrusion electrode (MVA) or the liquid crystal molecule of carving seam electrode (PVA), and light can't see through; After powering up, near the liquid crystal molecule the protrusion drives other liquid crystal molecules rapidly and rotates, and makes major axis favour substrate, and transmissivity rises, and realizes the light modulation.The VA mode LCD forms multidomain, and makes the liquid crystal molecule on each farmland rotate towards four direction, and visual angle is up and down compensated simultaneously, therefore can obtain good visual angle at four direction.
Also have company to propose face internal conversion (IPS) liquid crystal indicator and fringing field switching (FFS) liquid crystal indicator; Such liquid crystal indicator is through forming horizontal component of electric field in liquid crystal cell; Make IPS mode liquid crystal molecule only in being parallel to the plane of glass substrate, rotate; Make light be more or less the same through the optical path difference of liquid crystal molecule from different perspectives, so viewing angle characteristic is better.But owing to the electrode of such display panels is formed on the same substrate, slower away from the upper strata liquid crystal molecule rotation of electrode behind making alive, make this type liquid crystal indicator need bigger driving voltage.On the other hand, because electrode can make aperture opening ratio reduce in same plane, transmittance reduces.
Another kind of wide visual angle technology is called optical compensation curved (OCB) liquid crystal indicator, and Fig. 1 (a)～Fig. 1 (c) is depicted as the display panels synoptic diagram of existing OCB liquid crystal indicator.The OCB type display panels of Fig. 1 (a)～Fig. 1 (c) comprises colour filtering chip basic board 1 respect to one another and array base palte 2, has clearance of predetermined width (gap) between colour filtering chip basic board 1 and the array base palte 2, and filling has the liquid crystal layer 3 that dielectric anisotropy is a positivity.Fig. 1 (a) is the bent synoptic diagram of arranging attitude (splay) of OCB display panels exhibition; Wherein through on colour filtering chip basic board 1 and array base palte 2, forming positivity oriented layer (being generally polyimide) and rubbing, feasible liquid crystal molecule near colour filtering chip basic board 1 and array base palte 2 obtains a little tilt angle.Then the OCB display panels shown in Fig. 1 (a) is applied a low-frequency ac voltage that surpasses threshold voltage; Make liquid crystal molecule under the effect of voltage, deflect; And symmetrical stack appears, shown in Fig. 1 (b), the OCB display panels of this moment is in OFF state.Then, the Control of Voltage display panels that puts on colour filtering chip basic board 1 and array base palte 2 through adjusting is in ON state or OFF state, and Fig. 1 (c) is depicted as the ON state of OCB display panels.
Shown in Figure 2 is the schematic cross-section of OCB display panels; As shown in the figure; Liquid crystal molecule is arranged with a kind of symmetrical structure, and the liquid crystal molecule of center is in the state perpendicular to colour filtering chip basic board 1 and array base palte 2 all the time, and liquid crystal molecule up and down then is the angle of inclination of symmetry.Because liquid crystal layer all is symmetrical all the time, therefore just can utilizes the liquid crystal molecule on top to offset voluntarily, thereby obtain wide visual angle by the phase deviation that birefringence caused of lower part liquid crystal molecule.For example, the symmetrical in the drawings dotted portion of light has had identical optical path difference.The great advantage of OCB display panels is ultrafast response speed; From Fig. 1 (a)～Fig. 1 (c), can find out; The long axis of liquid crystal molecule of ocb mode is all the time on a plane; Liquid crystal molecule only needs the minimum angle of deflection just can reach preposition when powering up, so the ocb mode liquid crystal display panel has the obvious speed advantage.
But; The OCB display panels is under the situation of no any electric field; Liquid crystal molecule is in the bent attitude of arranging of exhibition shown in Fig. 1 (a), shows that in order to realize picture the long time of the each cost of OCB Technology Need makes liquid crystal molecule reach the bend alignment attitude shown in Fig. 1 (b).On the other hand, in the self compensation face of liquid crystal molecule, self compensation can be realized in the visual angle, and when still the position beyond self compensation face was observed, the difference that will produce optical path difference made the visual angle be restricted.Especially in the plane perpendicular to self compensation face,, therefore can't form self compensation because the arrangement of liquid crystal molecule no longer has symmetry.Light to the different directions outgoing does not have identical optical path difference, so can't realize wide viewing angle.
And because the OCB display panels is not widely used, therefore each not direct mostly and corresponding polaroid of OCB display panels of big polaroid producer has caused the OCB display panels high with the polaroid price, and difficult acquisition.
To above technical matters, the present invention proposes a kind of novel optical compensation curved display panels, can effectively address the above problem.
Summary of the invention
The object of the present invention is to provide a kind of optical-compensation bent liquid crystal display panel; Can obtain omnibearing wide viewing angle; And can be under the situation that need not apply above the low frequency ac of threshold voltage; Can make liquid crystal layer arrange attitude and be converted into the bend alignment attitude, and need not add specific optical compensation films by Zhan Qu.
For solving the problems of the technologies described above, optical-compensation bent liquid crystal display panel of the present invention comprises upper substrate and infrabasal plate, parallel being oppositely arranged; And liquid crystal layer, be sandwiched between said upper substrate and the said infrabasal plate, and the dielectric anisotropy of the liquid crystal molecule in the said liquid crystal layer is for just; Wherein, on said upper substrate and said infrabasal plate, form a plurality of projection figures accordingly, and apply negativity oriented layer without friction at said a plurality of projection patterned surfaces with gradient with gradient; Said a plurality of projection figure with gradient makes to be arranged perpendicular to said projection patterned surface near the liquid crystal molecule of said upper substrate and infrabasal plate, and makes whole liquid crystal layer present the bend alignment attitude; The gradient of said projection figure is that 15 degree are to 25 degree.
As another preferred version of the present invention, said oriented layer is a polyimide.
As a preferred version more of the present invention, said projection figure with gradient is that end face is the wing of plane.
As another preferred version of the present invention, said projection figure with gradient is that end face is the bowl-type of falling on plane.
In the optical-compensation bent liquid crystal display panel of the present invention; Because the specific arrangement mode of liquid crystal molecule in whole front panel; To in plural different facial, form optical compensation curved arrangement at least, promptly have the plural not self compensation face of coplane at least.Therefore, all will receive the auto-compensation of liquid crystal molecule, and obtain identical optical path difference, thereby realize omnibearing wide viewing angle to the light of any direction outgoing.And in the optical-compensation bent liquid crystal display panel of the present invention; Utilize the projection that forms on the substrate to make liquid crystal molecule generation pre-dumping and form the bend alignment attitude with gradient; The low-frequency ac voltage that can avoid need applying in the existing optical-compensation bent liquid crystal display panel above threshold voltage forms the bend alignment spent time of attitude; And can reduce the infringement that low-frequency ac voltage causes for film transistor device, thereby enhance productivity, reduce production costs.
Description of drawings
Fig. 1 (a) is depicted as the bent synoptic diagram of arranging attitude of exhibition of existing OCB display panels.
Fig. 1 (b) is depicted as the synoptic diagram of OFF state of the bend alignment attitude of existing OCB display panels.
Fig. 1 (c) is depicted as the synoptic diagram of ON state of the bend alignment attitude of existing OCB display panels.
Shown in Figure 2 is the synoptic diagram of existing OCB display panels.
Fig. 3 (a) is depicted as the synoptic diagram according to the OCB display panels 300 of first embodiment of the invention.
Fig. 3 (b) is depicted as the partial top view of formed regular protrusions figure on the array base palte 302.
Fig. 3 (c) is depicted as the schematic top plan view according to the projection figure on the array base palte of the OCB display panels 300 of first embodiment of the invention.
Fig. 4 (a) is depicted as the schematic cross-section of OCB display panels 300 under OFF state.
Fig. 4 (b) is depicted as the schematic cross-section of OCB display panels 300 under ON state.
Fig. 5 (a) is depicted as the schematic cross-section of display panels 400 among second embodiment.
Fig. 5 (b) is depicted as the partial top view of the array base palte of display panels 400.
Fig. 5 (c) is depicted as the schematic top plan view according to the projection figure on the array base palte of the OCB display panels 400 of second embodiment of the invention.
Embodiment
Specify embodiment of the present invention with reference to the accompanying drawings.
First embodiment
Fig. 3 (a) is depicted as the synoptic diagram according to the OCB display panels 300 of first embodiment of the invention.Shown in Fig. 3 (a), the OCB display panels 300 of first embodiment of the invention comprises colour filtering chip basic board 301 and array base palte 302, and is sandwiched in the liquid crystal layer 303 between colour filtering chip basic board 301 and the array base palte 302.On colour filtering chip basic board 301 and array base palte 302, form and have the projection figure 304 of the gradient, and make on colour filtering chip basic board 301 and the array base palte 302 figure against each other.Said projection figure with gradient is formed by organic membrane.
Fig. 3 (b) is depicted as the partial top view of formed regular protrusions figure on the array base palte 302.On colour filtering chip basic board 301 and array base palte 302, apply the negativity oriented layer (polyimide) (not shown) 305 of not passing through friction orientation respectively, and the dielectric anisotropy of filling liquid crystal molecule is positive liquid crystal layer 303 between colour filtering chip basic board 301 and array base palte 302.
Fig. 3 (c) is depicted as the schematic top plan view according to the array base palte 302 of the OCB display panels 300 of first embodiment of the invention.Shown in Fig. 3 (c), on whole array base palte 302, form regular protrusions figure with gradient, and said projection figure be have 45 degree wing, end face is the structure of platform-like.Be merely signal shown in the figure, the spacing of this projection figure, the slope of the size and the gradient etc. all can be adjusted.The preferably said gradient is 15 degree～25 degree, and the gradient is preferably 18 degree in the present embodiment.
Specify the embodiment of the OCB display panels 300 of first embodiment of the invention below with reference to Fig. 4 (a) and Fig. 4 (b).Shown in Fig. 4 (a); Need not apply under the situation of external voltage; The positivity liquid crystal molecule is under the effect of the negativity oriented layer 305 (not shown) of not passing through friction orientation; On the surface of projection figure 304, obtain with 18 degree gradients vertical orientated, thereby make that the liquid crystal molecule near colour filtering chip basic board 301 and array base palte 302 forms the tilt angle of 72 degree in the liquid crystal layer 303, and finally form the OCB display panels and carry out image and show that needed bending (bend) arranges attitude.Fig. 4 (a) is depicted as the schematic cross-section of OCB display panels 300 under OFF state.Fig. 4 (b) is depicted as the schematic cross-section of OCB display panels 300 under ON state.When OCB display panels 300 was applied voltage, liquid crystal molecule deflected, and formed the Liquid Crystal Molecules Alignment of the liquid crystal layer of OCB display panels 300 under ON state shown in Fig. 4 (b).From Fig. 4 (a) and Fig. 4 (b), can find out; Look down from colour filtering chip basic board 301; Promptly look from the place ahead of display panels; Liquid crystal molecule in the liquid crystal layer forms symmetric figure in whole liquid crystal panel, therefore can form two self compensation faces that are 45 degree and 135 degree with horizontal direction, and the light of outgoing all can form self compensation on any direction of any outgoing principal plane.Thereby can obtain wide visual angle and show through the self compensation adjustment because the phase deviation that the liquid crystal molecule birefringent characteristic is caused makes the observer on comprehensive, can both obtain good observation effect.
And the OCB display panels of first embodiment of the invention need not add quarter-wave plate in the outside of colour filtering chip basic board 301 and array base palte 302, can greatly reduce production costs, and simplify production technology.
Second embodiment
With reference to Fig. 5 (a)～Fig. 5 (c) second embodiment of the invention is described below.The shape of projection figure that second embodiment and first embodiment different are to have the gradient is different.Use identical Reference numeral with part identical among first embodiment, and repeat no more at this.
Fig. 5 (a) is depicted as the schematic cross-section of display panels 400 among second embodiment.Fig. 5 (b) is depicted as the partial top view of the array base palte of display panels 400.Fig. 5 (c) is depicted as the schematic top plan view according to the projection figure on the array base palte of the OCB display panels 400 of second embodiment of the invention.
Shown in Fig. 5 (a) and Fig. 5 (b), the projection figure 404 that has the gradient among second embodiment is bowl-shape, and is uniformly distributed on the colour filtering chip basic board 301 and array base palte 302 of display panels 400, and the gradient of this projection figure 404 is 18 degree.Identical with first embodiment, through the negativity oriented layer (not shown) that friction in the surface applied of projection figure, and between colour filtering chip basic board 301 and array base palte 302, fill the positivity liquid crystal.Under the situation that need not power up, can arrange perpendicular to the projection patterned surface near the liquid crystal molecule of colour filtering chip basic board 301 and array base palte 302, and make whole liquid crystal layer present the bend alignment attitude.
Different with embodiment 1, to look from the place ahead of display panels 400, liquid crystal molecule can form any a plurality of self compensation faces from the horizontal by any different angles in whole liquid crystal panel.The light of outgoing can form self compensation on any direction of any outgoing principal plane thus, makes the observer on comprehensive, can both obtain same observation effect, has obtained wide viewing angle.
OCB display panels of the present invention; Need not apply bend alignment (bend) attitude that can obtain the OCB display panels above the low-frequency ac voltage of threshold voltage; Thereby can solve in the OCB display panels, liquid crystal layer is arranged attitude needs long preheating time to the bend alignment attitude problem by Zhan Qu.Simultaneously owing to need not apply low-frequency ac voltage for display panels above threshold voltage; Therefore the influence that can avoid low-frequency ac voltage to cause for the film transistor device in the display panels etc., thus the performance of this OCB display panels improved.
And OCB display panels of the present invention need not add quarter-wave plate, can greatly reduce production costs, and simplifies production technology.
Those skilled in the art all should be appreciated that, under the situation that does not break away from the spirit or scope of the present invention, can carry out various modifications and modification to the present invention.Thereby, if when any modification and modification fall in the protection domain of appended claims and equivalent thereof, think that the present invention contains these modifications and modification.
Claims (5)
1. optical-compensation bent liquid crystal display panel comprises:
Upper substrate and infrabasal plate, parallel being oppositely arranged, and
Liquid crystal layer is sandwiched between said upper substrate and the said infrabasal plate, and the dielectric anisotropy of the liquid crystal molecule in the said liquid crystal layer is for just;
Wherein, on said upper substrate and said infrabasal plate, form a plurality of projection figures accordingly, and apply negativity oriented layer without friction at said a plurality of projection patterned surfaces with gradient with gradient; Said a plurality of projection figure with gradient makes to be arranged perpendicular to said projection patterned surface near the liquid crystal molecule of said upper substrate and infrabasal plate, and makes whole liquid crystal layer present the bend alignment attitude; The gradient of said projection figure is that 15 degree are to 25 degree.
2. optical-compensation bent liquid crystal display panel according to claim 1, the gradient of wherein said projection figure are 18 degree.
3. optical-compensation bent liquid crystal display panel according to claim 1, wherein said oriented layer are polyimide.
4. optical-compensation bent liquid crystal display panel according to claim 1, wherein said projection figure with gradient are that end face is the wing of plane.
5. optical-compensation bent liquid crystal display panel according to claim 1, wherein said projection figure with gradient are that end face is the bowl-type of falling on plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810043312A CN101571649B (en) | 2008-04-28 | 2008-04-28 | Optical-compensation bent liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810043312A CN101571649B (en) | 2008-04-28 | 2008-04-28 | Optical-compensation bent liquid crystal display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101571649A CN101571649A (en) | 2009-11-04 |
| CN101571649B true CN101571649B (en) | 2012-10-17 |
Family
ID=41231035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810043312A Active CN101571649B (en) | 2008-04-28 | 2008-04-28 | Optical-compensation bent liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571649B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353673B (en) * | 2013-06-27 | 2015-03-04 | 京东方科技集团股份有限公司 | Display panel and manufacturing method thereof, and display apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760737A (en) * | 2004-10-14 | 2006-04-19 | 阿尔卑斯电气株式会社 | OCB mode transflective liquid crystal display device |
| CN100353228C (en) * | 2004-11-26 | 2007-12-05 | 友达光电股份有限公司 | Multifield vertical directional liquid crystal display panel |
| CN201273978Y (en) * | 2008-10-07 | 2009-07-15 | 上海天马微电子有限公司 | Optical compensation bending type LCD panel |
-
2008
- 2008-04-28 CN CN200810043312A patent/CN101571649B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760737A (en) * | 2004-10-14 | 2006-04-19 | 阿尔卑斯电气株式会社 | OCB mode transflective liquid crystal display device |
| CN100353228C (en) * | 2004-11-26 | 2007-12-05 | 友达光电股份有限公司 | Multifield vertical directional liquid crystal display panel |
| CN201273978Y (en) * | 2008-10-07 | 2009-07-15 | 上海天马微电子有限公司 | Optical compensation bending type LCD panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101571649A (en) | 2009-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9122109B2 (en) | Blue phase liquid crystal display device and manufacturing method thereof | |
| JPWO2018221413A1 (en) | Display device | |
| CN105911771B (en) | A kind of LCD assembly and liquid crystal display device | |
| JP2003233083A (en) | Fringe field switching liquid crystal display device and its manufacturing method | |
| CN111208676B (en) | Liquid crystal display panel and liquid crystal display device | |
| CN102466912A (en) | Liquid crystal display | |
| CN103148453A (en) | Light guide plate, optical diaphragm, backlight module, array substrate and liquid crystal module | |
| KR100486186B1 (en) | Liquid crystal display device | |
| US6977706B2 (en) | In-plane switching mode liquid crystal display having heightened electrodes | |
| US7394512B2 (en) | Liquid crystal display device | |
| CN101498871B (en) | Visual angle-controllable LCD device and its driving method | |
| CN201368957Y (en) | LCD (liquid crystal display) device with ultra-high contrast ratio and ultra-wide viewing angle | |
| KR19990074569A (en) | Liquid crystal display | |
| CN105223727B (en) | A kind of color membrane substrates of liquid crystal display | |
| US20060114390A1 (en) | Liquid crystal display device | |
| CN101571649B (en) | Optical-compensation bent liquid crystal display panel | |
| CN201273978Y (en) | Optical compensation bending type LCD panel | |
| CN102998840A (en) | Display panel and display device comprising same | |
| KR101152548B1 (en) | Liquid crystal display device increasing viewing angle | |
| US9316868B2 (en) | Liquid crystal display panel and method for fabricating the same | |
| US9007548B2 (en) | Wide view angle liquid crystal display device operating in normally white mode | |
| CN102422211B (en) | Liquid crystal display device | |
| US8390768B2 (en) | Vertically aligned liquid crystal display device | |
| KR100777690B1 (en) | Liquid crystal displays | |
| KR101029671B1 (en) | Display using a vertically aligned deformed helix ferroelectric liquid crystals and multi electrode structure and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |