CN103901657B - A kind of in-plane switching type display panels and display device - Google Patents
A kind of in-plane switching type display panels and display device Download PDFInfo
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- CN103901657B CN103901657B CN201210581416.8A CN201210581416A CN103901657B CN 103901657 B CN103901657 B CN 103901657B CN 201210581416 A CN201210581416 A CN 201210581416A CN 103901657 B CN103901657 B CN 103901657B
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Abstract
The invention discloses a kind of in-plane switching liquid crystal display device, including a kind of in-plane switching type display panels, described in-plane switching type display panels includes: the second substrate that first substrate is relative with described first substrate, upper and lower polaroid and the liquid crystal layer between described first substrate and described second substrate, the pixel voltage that each GTG is corresponding is not equal to 0；The polarization direction of upper and lower polaroid is orthogonal, and frictional direction has an angle with the polarization direction of described lower polaroid；This angle is preferably 5 ° or 8.1 °, and described in-plane switching type display panels also includes compensating film, and described compensation film compensates the Phase delay that interface liquid crystal molecule produces.This in-plane switching type display panels can increase substantially the response speed of in-plane switching liquid crystal display device, and reduces the complexity of technique, reduces production cost.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of in-plane switching type improving response speed
Display panels and display device.
Background technology
In-plane switching type display panels is the display panels of a kind of main flow currently mainly, by day
Stand on calendar year 2001 this day to release.In-plane switching liquid crystal display device mainly has IPS (IN PLAIN SWITCH)
Type and FFS (FRINGE FIELD SWITCH) two kinds of type.Liquid crystal molecule is with in the plane being parallel to substrate
The mode rotated works and improves visual angle, utilizes space thickness, frictional strength and effectively utilizes transverse electric field to drive
Dynamic change allows liquid crystal molecule do the Plane Rotation angle of maximum to increase visual angle；The manufacture of commodity is not necessary to
Additionally adding compensation film, level and vertical angle of view can reach the excellent specific property of super wide viewing angle, in the lifting at visual angle
On can reach 178 degree.In-plane switching type liquid crystal panel has the advantages such as visible angle is big, color is fine and smooth, sees
The most penetrating, but response time is relatively slow and power consumption height is also obvious the lacking of this panel types one
Point.
And the main cause causing the response speed of in-plane switching liquid crystal display device slow is at low pixel voltage
Under, the time of gray scale response (Gray to Gray) is long, and gray scale response speed is slow, especially from 0 pixel
When voltage starts to start, gray scale response speed is the slowest.As shown in Figure 1, in-plane switching type liquid crystal display
Device is slow in the gray scale response speed that low pixel voltage is corresponding, and response time is long, and along with pixel voltage continues
Increasing, corresponding gray scale response speed accelerates, and response time shortens.
In order to improve the response speed of in-plane switching liquid crystal display device, many developers are had to propose various
Technological means, as the Chinese patent of Publication No. CN101916010A proposes a kind of quickly response and high-penetration
IPS～the VA liquid crystal display of rate, while reducing electrode width and holding electrode spacing, use with
Plus strip ITO in top glass substrate corresponding to lower glass substrate strip ITO pixel electrode gap center position
The mode of public electrode, in utilization, the oblique electric field between lower glass substrate stripe-like ITO electrodes reaches to improve sound
Answer the purpose of speed.
For another example in the Chinese patent of Publication No. CN1723412A proposes a kind of towering structure cell face with angle of friction
Switching type liquid crystal display, increases to 20 degree rubbing angle, preferably 30～40 degree, to accelerate display
The response time of device.But this method can bring the decline of penetrance, the driving of the most towering structure cell is complicated, and
And it is easy to defective bad.
The shortcoming of prior art is the reduction improving and being easily caused penetrance while response speed, and can carry
Carry out the complication of technique.
Summary of the invention
It is an object of the invention to propose a kind of in-plane switching liquid crystal display device, it is possible to increase substantially face
The response speed of interior switch type type liquid crystal indicator, and reduce the complexity of technique, reduce cost.
For reaching this purpose, the present invention by the following technical solutions:
A kind of in-plane switching liquid crystal display device, including a kind of in-plane switching type display panels, described
A kind of in-plane switching type display panels includes: the second base that first substrate is relative with described first substrate
Plate, upper polarizer, lower polaroid and the liquid crystal layer between described first substrate and described second substrate,
It is characterized in that, the pixel voltage that each GTG is corresponding is not equal to 0；Upper polarizer, the polarization direction of lower polaroid
Orthogonal, there is an angle frictional direction and described lower polarization direction；Described in-plane switching type liquid crystal display fills
Putting and also include compensating film, described compensation film compensates the Phase delay that interface liquid crystal molecule produces.
Further, during black state, the corresponding pixel voltage applied makes described liquid crystal molecules parallel in lower polarization
Direction.
Further, the value of pixel voltage is 0.7V-1.3V.
Further, described compensation film is that negativity A compensates film or biaxial compensation film.
Further, described angle is 2 °～8.1 °.
Further, described angle is 5 ° or 8.1 °.
Further, described compensation film is between described first substrate and described upper polarizer.
Compared with prior art, it is an advantage of the invention that in-plane switching type liquid crystal display can be significantly increased to be filled
The response speed put, reduces the complexity of technique simultaneously, reduces production cost.
Accompanying drawing explanation
Fig. 1 is the GTG variation diagram with pixel voltage of liquid crystal indicator
Fig. 2 is the structure chart of the in-plane switching type display panels in the specific embodiment of the invention.
Fig. 3 is the structure chart of the in-plane switching type display panels in the specific embodiment of the invention.
Fig. 4 a is the schematic diagram of border liquid crystal light leak.
Fig. 4 b is that negative A compensates the schematic diagram that border liquid crystal light leak is compensated by film.
Fig. 5 is liquid crystal indicator variation diagram of penetrance T under different pixels voltage.
The technical characteristic that reference in figure refers to respectively is:
1, lower polaroid, 2, electrode, 3, liquid crystal layer, 4, compensate film, 5, upper polarizer, 6, first
Substrate, 7, second substrate, I, frictional direction, II, the polarization direction of lower polaroid, III, intermediate layer liquid
The brilliant postrotational direction of planes of molecules, IV, the polarization direction of upper polarizer, Vn is pixel voltage, and T is for wearing
Thoroughly rate, t is GTG, a, reach black state before, the relation curve of pixel voltage and penetrance, b,
After reaching black state, pixel voltage continues to increase, pixel voltage and the relation curve of penetrance, c, black state.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.It is understood that this
Specific embodiment described by place is used only for explaining the present invention, rather than limitation of the invention.The most also need
It is noted that for the ease of describing, accompanying drawing illustrate only part related to the present invention and not all knot
Structure.
Specific embodiment one:
The in-plane switching liquid crystal display device that the embodiment of the present invention one provides includes switch type liquid crystal in one side
Showing panel, this in-plane switching type display panels includes first substrate 6 and the second substrate 7 being oppositely arranged；
The liquid crystal layer 3 being held between first substrate 6 and second substrate 7；Be arranged at outside first substrate 6 upper partially
Shake sheet；It is arranged at the lower polaroid outside second substrate 7；And compensate film 4.Under normal circumstances, the first base
Plate 6 also referred to as color membrane substrates, second substrate 7 also referred to as thin film transistor (TFT) (THIN FILM
TRANSISTOR, TFT) array base palte.Second substrate 7 includes lower transparency carrier and is positioned at lower transparency carrier
On pel array (not shown)；Pel array includes multi-strip scanning line and a plurality of data lines of insulation intersection,
And be arranged at scan line and the pixel cell of data wire infall, each pixel cell include switch TFT, as
Element electrode and public electrode 2.
As shown in Figure 2, the frictional direction of liquid crystal molecule is I, and the paster angle arranging lower polaroid is II,
Φ is the angle of frictional direction I and lower polarization direction II.Angle Φ becomes a functional relationship with penetrance T:
T=γ sin2(2 φ), γ is a constant, and pixel voltage Vn becomes functional relationship T=f (Vn) with penetrance T,
Here pixel voltage refers to the pressure reduction absolute value between public electrode and pixel electrode.
When pixel voltage is 0V, i.e. it is not applied in voltage between pixel electrode and public electrode, then liquid crystal
Molecule, including the liquid crystal molecule being positioned on first substrate 6 and second substrate 7 surface and the liquid being positioned at intermediate layer
Brilliant molecule, arranges each along frictional direction I.It is positioned at the liquid crystal on first substrate 6 and second substrate 7 surface
Phase delay produced by molecule is Δ nd1.Compensate film to be pointed on first substrate 6 and second substrate 7 surface
Liquid crystal molecule produced by phase delay delta nd1 compensate, compensate film produce Phase delay be-Δ
Nd2, designs Δ nd1-Δ nd2=0, the most now, the liquid on first substrate 6 and second substrate 7 surface
Total Phase delay of the polarized light of brilliant molecule is 0, i.e. liquid crystal on first substrate 6 and second substrate 7 surface divides
Sub-penetrance is zero, can not compensate the liquid crystal molecule being positioned at intermediate layer yet with compensation film, and now middle
The orientation (the namely frictional direction I of liquid crystal molecule) of the liquid crystal molecule of layer and the direction of lower polaroid
, i.e. there is above-mentioned angle Φ in difference, the most overall penetrance of polarized light is not zero, and is not black state.
As shown in Figure 3, when pixel voltage Vn is a little bias, and Vn is not equal to 0, such as Vn=0.7V
Deng, intermediate layer liquid crystal molecule turns over an angle Φ, i.e. the Liquid Crystal Molecules Alignment direction in intermediate layer and lower polarization side
To identical, and it is perpendicular to polarization direction, then wearing of the polarized light of the corresponding liquid crystal molecule through intermediate layer
Rate is zero thoroughly.The liquid crystal molecule being positioned on first substrate 6 and second substrate 7 surface does not rotates due to grappling,
It produces phase delay delta nd1 to light, as shown in Figs. 4a and 4b, and (nx < ny, wherein nx is X to compensate film
Axial interior refractive index, ny is refractive index in the face in Y direction) X-direction be parallel to liquid crystal
There is an angle Φ molecular long axis direction ne, this long axis of liquid crystal molecule direction ne and lower polarization direction, compensate film
Y direction is parallel to liquid crystal molecule short axle orientation no.The Phase delay compensating film generation is-Δ nd2,
Wherein, Phase delay becomes a functional relationship: T=sin with penetrance T2(2φ)sin2(2 π d Δ n/ λ), d Δ n here
For Phase delay.Design Δ nd1-Δ nd2=0, then polarized light is through first substrate 6 and second substrate 7 table
Total Phase delay after liquid crystal molecule on face and compensation film compensate is zero, and its polarization direction does not changes, and still hangs down
Straight in the polarization direction of upper polarizer, the penetrance of the corresponding liquid crystal molecule through intermediate layer is also zero, from
And, penetrance T of the liquid crystal molecule on the liquid crystal molecule in intermediate layer and surface is all zero, the penetrance of light
Generally zero, it is achieved black state (can be defined as 0 GTG).Black state is C point, pixel voltage in accompanying drawing 5
Permeability variations corresponding to from 0V to Vn is as shown in accompanying drawing 5 middle conductor a.
When pixel voltage continues to increase, and the angle that intermediate layer liquid crystal molecule turns over also is increasing, in accompanying drawing 5
Shown in line segment b, the penetrance of corresponding light is also increasing, and the penetrance of corresponding light is not zero.Work as pixel
The angle that voltage increases to turn over so that the liquid crystal molecule in intermediate layer all becomes with lower polarization direction and upper polarization direction
When 45 °, the penetrance of corresponding light reaches maximum, it is achieved white state (maximum gray can be defined as, as
255 etc.).And the liquid crystal molecule being positioned on first substrate 6 and second substrate 7 surface does not rotates due to grappling,
It is still compensated film to the Phase delay that light produces and compensates, then through the polarized light of lower polaroid through liquid
Total Phase delay after crystal edge interlayer and compensation film compensate is still zero, and its polarization direction does not changes, and i.e. polarizes
Direction is still perpendicular to polarization direction, and therefore, the penetrance of corresponding light is also for zero.
It should be pointed out that, the present embodiment is to be applied to the process of c Points And lines section b in Fig. 5, and this enforcement
Example is mentioned when pixel voltage equal to 0.7V time, the polarization direction of lower polaroid and the folder of frictional direction are set
Angle Φ is only a kind of citing and non-limiting, such as: angle Φ can be 2 °～8.1 °.For example, it is also possible to
Make pixel voltage be equal to 1.1V, 1.3V etc., be correspondingly arranged polarization direction and the frictional direction of lower polaroid respectively
Angle Φ equal to 5 °, 8.1 ° etc..
In sum, the in-plane switching liquid crystal display device that the embodiment of the present invention provides, when being not connected with power supply,
The pixel voltage of original state is 0, and the penetrance of light is not 0；After switching on power, pixel voltage makes liquid crystal
Molecules align direction is rotated into the direction identical with lower polarization direction from frictional direction, is converted into from original state
Black state (0 GTG), the i.e. penetrance of light are never 0 to be changed into 0；When having image to show, (black from 0 GTG
State) it is converted into other GTGs, or change between each GTG, pixel voltage is not zero all the time, liquid
The gray scale response speed of brilliant molecule is fast.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.Those skilled in the art
It will be appreciated that the invention is not restricted to specific embodiment described here, can enter for a person skilled in the art
Row various obvious changes, readjust and substitute without departing from protection scope of the present invention.Therefore, though
So by above example, the present invention is described in further detail, but the present invention be not limited only to
Upper embodiment, without departing from the inventive concept, it is also possible to include other Equivalent embodiments more,
And the scope of the present invention is determined by scope of the appended claims.
Claims (8)
1. an in-plane switching type display panels, including: first substrate is relative with described first substrate
Second substrate, upper polarizer, lower polaroid and between described first substrate and described second substrate
Liquid crystal layer, it is characterised in that the pixel voltage that each GTG is corresponding is not equal to 0；Upper polarizer, lower polaroid
Polarization direction orthogonal, there is an angle frictional direction and described lower polarization direction；Described in-plane switching type
Display panels also includes compensating film, and described compensation film is used for being pointed to described first substrate and described second
Phase delay produced by liquid crystal molecule on substrate surface compensates, to compensate interface liquid crystal molecule generation
Phase delay.
In-plane switching type display panels the most according to claim 1, it is characterised in that during black state,
The corresponding pixel voltage applied makes described liquid crystal molecules parallel in lower polarization direction.
In-plane switching type display panels the most according to claim 2, it is characterised in that described picture
The value of element voltage is 0.7V-1.3V.
In-plane switching type display panels the most according to claim 1, it is characterised in that described benefit
Repaying film is that negativity A compensates film or biaxial compensation film.
In-plane switching type display panels the most according to claim 1, it is characterised in that described folder
Angle is 2 °～8.1 °.
In-plane switching type display panels the most according to claim 5, it is characterised in that described folder
Angle is 5 ° or 8.1 °.
In-plane switching type display panels the most according to claim 1, it is characterised in that described benefit
Repay film between described first substrate and described upper polarizer.
8. an in-plane switching liquid crystal display device, including the face as according to any one of claim 1-7
Interior switch type liquid crystal display panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210581416.8A CN103901657B (en) | 2012-12-27 | 2012-12-27 | A kind of in-plane switching type display panels and display device |
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| CN201210581416.8A CN103901657B (en) | 2012-12-27 | 2012-12-27 | A kind of in-plane switching type display panels and display device |
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| CN103901657A CN103901657A (en) | 2014-07-02 |
| CN103901657B true CN103901657B (en) | 2016-09-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106019720B (en) * | 2016-05-31 | 2020-02-14 | 京东方科技集团股份有限公司 | Substrate for display, display device and curved surface display device |
| CN112099270A (en) | 2020-09-30 | 2020-12-18 | 京东方科技集团股份有限公司 | Horizontal electric field type display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3144474B2 (en) * | 1997-02-13 | 2001-03-12 | 日本電気株式会社 | Active matrix liquid crystal display panel |
| TW548618B (en) * | 1998-11-13 | 2003-08-21 | Fujitsu Display Tech | In-plane switching liquid crystal display device |
| KR20060134364A (en) * | 2005-06-22 | 2006-12-28 | 엘지.필립스 엘시디 주식회사 | In plane switching mode liquid crystal panel |
| CN1969225A (en) * | 2004-04-27 | 2007-05-23 | 富士胶片株式会社 | Liquid crystal display device |
-
2012
- 2012-12-27 CN CN201210581416.8A patent/CN103901657B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3144474B2 (en) * | 1997-02-13 | 2001-03-12 | 日本電気株式会社 | Active matrix liquid crystal display panel |
| TW548618B (en) * | 1998-11-13 | 2003-08-21 | Fujitsu Display Tech | In-plane switching liquid crystal display device |
| CN1969225A (en) * | 2004-04-27 | 2007-05-23 | 富士胶片株式会社 | Liquid crystal display device |
| KR20060134364A (en) * | 2005-06-22 | 2006-12-28 | 엘지.필립스 엘시디 주식회사 | In plane switching mode liquid crystal panel |
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