CN107357075A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN107357075A CN107357075A CN201710686440.0A CN201710686440A CN107357075A CN 107357075 A CN107357075 A CN 107357075A CN 201710686440 A CN201710686440 A CN 201710686440A CN 107357075 A CN107357075 A CN 107357075A
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- optical grating
- grating construction
- liquid crystal
- display panel
- layer
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
Abstract
The present invention relates to display technology field, more particularly to a kind of display panel, including the first underlay substrate, ducting layer, liquid crystal layer and the second electrode being cascading；It is used to control the first coupling luminous optical grating construction of the ducting layer provided with some in the liquid crystal layer, the side of first optical grating construction connects with the ducting layer, and opposite side is connected to first electrode.By scheme proposed by the invention, without setting polaroid, the purpose of liquid crystal display is realized by way of grating coupling optical waveguide light extraction, solves the problems, such as that substrate delay is high in flexible liquid crystal panel.
Description
【Technical field】
The present invention relates to display technology field, more particularly to a kind of display panel and display device.
【Background technology】
In recent years, in display technology field, liquid crystal display panel includes the array base palte being oppositely arranged and color film layer, array
It is provided with liquid crystal layer between substrate and color film layer, the back side of the back side of array base palte and color film layer is provided with polaroid.Pass through
The deflection and the control by two layers of polaroid of voltage control liquid crystal, realize that GTG is shown.
In the prior art, it is directly with soft by the upper and lower base plate in array base palte to do the ways of Flexible Displays with liquid crystal panel
Property substrate substitute, because the phase delay of the flexible base board such as PI substrates of current comparative maturity is all higher, it is necessary to compensate, and
The thickness of compensation layer is generally bigger, so as to add the thickness of flexible display device, correspondingly, the production cost of display device
Also corresponding increase.
【The content of the invention】
The purpose of the present invention aims to provide a kind of display panel and display device, for solving in flexible liquid crystal panel
The problem of substrate delay is high.
To realize the purpose, the invention provides a kind of display panel, including be cascading the first underlay substrate,
Ducting layer, liquid crystal layer and second electrode；In the liquid crystal layer provided with it is some be used to control the ducting layer coupling luminous first
Optical grating construction, the side of first optical grating construction connect with the ducting layer, and opposite side is connected to first electrode.
Specifically, it is additionally provided with some the second optical grating constructions for being used to support liquid crystal cell thick in the liquid crystal layer, described second
The side of optical grating construction connects with the ducting layer, and the thickness of second optical grating construction is more than the thickness of first optical grating construction
Degree.
Preferably, first optical grating construction of predetermined number, phase are provided between two neighboring second optical grating construction
It is spaced between adjacent two first optical grating constructions or between adjacent first optical grating construction and the second optical grating construction default
Distance.
Specifically, the screen periods of first optical grating construction by light direction, go out optical wavelength and determine.
Specifically, with the liquid crystal layer there is fixed refractive index difference in first optical grating construction.
Specifically, described display panel, in addition to：The second electrode is arranged on away from the first underlay substrate side
Second underlay substrate, it is characterised in that also include being arranged on second underlay substrate dissipating away from the first underlay substrate side
Penetrate layer.
It is preferred that the refractive index of the ducting layer is higher than the refractive index of first underlay substrate, so that light is described
It is totally reflected in ducting layer.
It is preferred that first underlay substrate and the second underlay substrate are that transmitance is high, flexible substrate.
Correspondingly, present invention also offers a kind of display device, it includes the display surface described in any of the above-described technical scheme
Plate, the backlight for being arranged at the ducting layer side and the barrier bed for being arranged at the ducting layer opposite side.
It is preferred that the backlight includes side entering type collimated backlight source, its light direction is parallel with ducting layer.
Compared with prior art, the present invention possesses following advantage：
In the scheme of display panel provided by the invention and display device, display panel includes first to be cascading
Underlay substrate, ducting layer, liquid crystal layer and second electrode, the liquid crystal layer is interior to be used to control the ducting layer to be coupled out provided with some
First optical grating construction of light, wherein first electrode and the refractive index of second electrode adjustable liquid crystal layer, liquid crystal layer control light from
Ducting layer is coupling luminous, and the coupling luminous amount of light of ducting layer is according to the refractive index of ducting layer and the difference of the refractive index of liquid crystal layer
It is determined that the first optical grating construction controls the light of specific wavelength in the light being coupled out from ducting layer with specific direction light extraction, so that
Realize the control of color and light direction.The present invention in display panel without setting polaroid and color film layer, you can realizes liquid
Crystalline substance display, while solve the problems, such as that substrate delay is high in liquid crystal display panel.
Further, in display panel provided by the invention, it is additionally provided with the liquid crystal layer some for supporting liquid crystal cell
The second thick optical grating construction, the second optical grating construction in the grating layer can support liquid crystal cell thick, occur in display panel curved
In the state of song, avoid occurring the problems such as display that brings by box thickness ununiformity is bad, moreover, when display panel bending curvature compared with
When big, the first optical grating construction can also play the thick effect of supporting case, so as to ensure the display of display panel in the bent state
Quality.
Further, in display device provided by the invention, the backlight is arranged on the side of ducting layer, and existing
The backlight for being arranged on underlay substrate side is compared, and backlight occupied area is smaller and can be when display panel stress is bent not
It is impacted.
In addition, the display device in the present invention is improved on the basis of the display panel, it is therefore, described aobvious
The showing device natural succession all advantages of the display panel.
The aspects of the invention or other aspects can more straightforwards in the following description.
【Brief description of the drawings】
Fig. 1 is the structural representation of display panel provided by the invention；
Fig. 2 is the structural representation of the display panel provided by the invention including scattering layer and barrier bed；
Fig. 3 is the structural representation of display device provided by the invention；
Fig. 4 is the light extraction schematic diagram of display panel of the present invention in the bent state.
【Embodiment】
The present invention is further described with exemplary embodiment below in conjunction with the accompanying drawings, identical label wherein in accompanying drawing
All refer to identical part.In addition, if it is known that the detailed description of technology is for showing the invention is characterized in that unnecessary
, then omitted.
Fig. 1 is a kind of structural representation of display panel provided in an embodiment of the present invention.As shown in figure 1,
The display panel includes the first underlay substrate 10, ducting layer 20, the electricity of liquid crystal layer 50 and second being cascading
Pole 60；Be provided with the liquid crystal layer it is some be used to controlling the first coupling luminous optical grating construction 30 of the ducting layer, described first
The side of optical grating construction 30 connects with the ducting layer 20, and opposite side is connected to first electrode 40.
The first electrode 40 and second electrode 60 are used for the refractive index of adjustable liquid crystal display layer, and the liquid crystal layer 50 is used to control
Light is coupling luminous from ducting layer, and the coupling luminous amount of light of ducting layer 20 is according to the refractive index of ducting layer and the folding of liquid crystal layer 50
The difference for penetrating rate determines that the first optical grating construction 30 in grating layer is mainly used in certain wave in the light that control liquid crystal layer is coupled out
Long light is with specific direction light extraction.
Specifically, it is additionally provided with some the second optical grating constructions 31 for being used to support liquid crystal cell thick in the liquid crystal layer, described the
The side of two optical grating constructions connects with the ducting layer, and the thickness of second optical grating construction is more than first optical grating construction
Thickness.In embodiments of the present invention, under display panel bending state, second optical grating construction plays main support, but
For display panel when bending curvature is larger, the first optical grating construction can also play the thick effect of supporting case.
Preferably, first optical grating construction of predetermined number, phase are provided between two neighboring second optical grating construction
Between adjacent two first optical grating constructions or be adjacent between first optical grating construction and the second optical grating construction be spaced it is default
Distance.
Specifically, between two adjacent the second optical grating constructions provided with predetermined number first optical grating construction, it is necessary to
What is illustrated is that predetermined number has no strict demand, may be greater than 1 integer, but in view of the diffraction efficiency mesh thick with supporting case
, the embodiment of the present invention sets 3 to 6 the first optical grating constructions preferably between two the second adjacent optical grating constructions.Specifically,
The material of grating layer is transparent dielectric material, for example, silica SiO2 or other organic resins, wherein, organic resin can
With lens high-molecular organic material, such as polymethyl methacrylate (abbreviation PMMA).The thickness range of first optical grating construction is
200nm~1um, preferably 500nm.
The optical grating construction of same thickness can be selected for different colors, the pixel of different colours can also be directed to respectively
The optical grating construction of different-thickness is designed, optical grating construction herein is mainly the first optical grating construction.
The refractive index of first optical grating construction is more than the refractive index of the liquid crystal layer, and the refractive index of the first optical grating construction
There is fixed refraction difference with liquid crystal layer, for example, the fixed refraction difference can be bigger more than the 0.05 fixed refraction difference
It is better, in order to be able to embody the effect of the first optical grating construction coupling light.In actual applications, first can be set as needed
The thickness of optical grating construction, for example, the first optical grating construction corresponding to red pixel cell, green pixel cell and blue pixel cells
Thickness can be with identical or different.The screen periods of first optical grating construction determine i.e. first by the light direction and color designed
The screen periods of optical grating construction are determined by the exit direction of light and the wavelength of light.Preferably, the dutycycle of the first optical grating construction is
0.5, but actual product design in can according to (such as regulation light extraction intensity, balance display panel diverse location it is bright
The reasons such as the difference of degree, process conditions) need to set dutycycle.
Specifically, the diffraction angles of the m order diffraction ripples of the first optical grating construction is only by the first grating structure period P, incidence wave
Wavelength X and incidence angle θ 0 determine, sin θ-sin θ 0=m λ/P (m=0, ± 1, ± 2 ...).
Generally 0 grade of transmission grating and the diffracted intensity of first-order diffraction are bigger, and the diffraction time of high-order is compared
The above two are much smaller；0 order diffraction ripple is that the diffraction direction of first-order diffraction ripple can be by the cycle of grating along incident light direction
Regulated and controled, so the regulation to light angle herein typically uses first-order diffraction ripple (when light direction is equal to or connects very much
During nearly incidence wave, Zero-order diffractive ripple can also be used).After the light direction of diffraction light is given, grating corresponding to different color light
Cycle is then determined to realize the screen periods for separately designing the first different optical grating constructions according to different color light by above-mentioned formula.
Thickness range for the first optical grating construction of coupled waveguide light extraction is 200nm~1um, preferably 300nm.For
The purpose of certain coloured light Zero-order diffractive ripple is eliminated, weakens or strengthens, the thickness of the first optical grating construction can be directed to the wavelength and carry out
Design, due to incidence angle be it is fixed, when the color ripple on the grizzly bar and space of grating position difference be half-wavelength odd-multiple when,
There is coherent subtraction in Zero-order diffractive ripple, and zero order wave is relevant to be weakened, fist-order wave enhancing；When position difference is wavelength integral multiple, zero level
The relevant enhancing of ripple, fist-order wave weaken.
Meanwhile the light that liquid crystal layer is coupled out reaches grating layer, by setting different screen periods, you can control light
The light direction and wavelength of grid diffraction, so as to realize the control of color and radiation direction.
In the present embodiment, the first optical grating construction is used to make derived from ducting layer light by the light of specific wavelength with specific
Angle of diffraction light extraction, wherein the specific angle of diffraction is determined by the screen periods of the first optical grating construction.As shown in figure 1, display panel
Including multiple the red pixel cell R being arranged in order, green pixel cell G and blue pixel cells B.Wherein, specific wavelength
When light is red light and the specific angle of diffraction is the red light angle of diffraction, light is irradiated to red picture derived from ducting layer
On the first optical grating construction in plain unit R, the first optical grating construction in red pixel cell R makes the red light in light with red
Coloured light line angle of diffraction light extraction, red pixel cell R can be irradiated in human eye with the red light of red raster angle of diffraction light extraction, and
Red pixel cell R will not be irradiated in human eye with the light of other wavelength of other angle of diffraction light extractions, for example, green light and
Blue ray will not be irradiated in human eye, so that red pixel cell R is emitted red light；The light of specific wavelength is green
The coloured light line and specific angle of diffraction is the green light angle of diffraction, the light being coupled out from ducting layer is irradiated to green pixel cell G
In the first optical grating construction, the first optical grating construction in green pixel cell G makes the green light in light spread out with green light
Firing angle light extraction, green pixel cell G can be irradiated in human eye with the green light of green raster angle of diffraction light extraction, and green pixel
Unit G will not be irradiated in human eye with the light of other wavelength of other angle of diffraction light extractions.
It should be noted that the simply exemplary illustration shown in Fig. 1, the position of the sub-pixel unit of three kinds of coloured light and is wrapped
The exponent number (i.e. quantity) of the first optical grating construction included is not limited with this figure.
The material of liquid crystal layer can be nematic liquid crystal, cholesteric liquid crystal or blue phase liquid crystal.Preferably, TN types display surface
Plate, VA types display panel and ADS types display panel typically each use nematic liquid crystal.
In the present embodiment, liquid crystal layer covers the first optical grating construction and the second optical grating construction, and is filled in the first optical grating construction
And second optical grating construction gap in, the thickness of liquid crystal layer is more than the thickness of the second optical grating construction, because of the thickness of the second optical grating construction
Degree is more than the thickness of the first optical grating construction, then the thickness of liquid crystal layer is naturally more than the thickness of the first optical grating construction.Usual first light
The thickness of grid structure can be as small as 200nm, then the thickness of liquid crystal layer includes 500nm~3 μm in 1um or so, scope, it is preferable that
The thickness of liquid crystal layer is 1 μm.The setting of thickness of liquid crystal layer can be can cover optical grating construction (the first optical grating construction and the second light
Grid structure) for the purpose of, and be easy to product other specification design (for example, electrical design, driving design etc.) be foundation.This reality
As long as applying in example liquid crystal layer covers grating layer, therefore the thickness of liquid crystal layer can set very thin, i.e. liquid crystal cell thickness can be with
What is set is very thin, so as to further increase the response time of liquid crystal.
The material of ducting layer can be transparent material, for example, silicon nitride Si3N4.The refractive index of ducting layer needs to be more than waveguide
The refractive index of one or more adjacent layer of layer, to ensure that light is totally reflected in ducting layer.It is ripple with reference to shown in Fig. 1
The refractive index of conducting shell is more than the refractive index of the first underlay substrate, and the refractive index of ducting layer is more than the refractive index of grating layer, ducting layer
Refractive index be more than liquid crystal layer refractive index.
The coupling luminous amount of light of ducting layer is according to ducting layer and the change of the difference of adjacent layer refractive index in the present embodiment
And change, because the refractive index of the liquid crystal layer can be adjusted according to the voltage difference that first electrode and second electrode load, because
, when the voltage difference change that first electrode and second electrode load, the refractive index of liquid crystal layer also changes, then ducting layer for this
Refractive index and the difference of refractive index of liquid crystal layer can also change so that the coupling luminous amount of light of ducting layer also can
Change.
Voltage on liquid crystal layer is applied to come the refractive index of adjustable liquid crystal display layer by regulation, selects suitable grating material,
So that no or ne of the refractive index of the first optical grating construction for the refractive index of liquid crystal layer, or fall between (ne is more than no).When
When liquid crystal layer refractive index and the equal refractive index of the first optical grating construction, the effect in grating layer control beam projecting direction is blanked,
Light is not coupled out from ducting layer, is now L0 states, when the refractive index of liquid crystal layer refractive index and the first grating layer most
When big, the maximum difference is preferably 0.6 or so, and the coupling of grating layer is most obvious, the coupling that light is coupled out from ducting layer
Efficiency highest is closed, is now L225 states, is other gray scale states when liquid crystal layer refractive index is between two kinds of situations.
It should be noted that：So-called GTG be by it is most bright with it is most dark between brightness change divide into several pieces, GTG generation
For table by most secretly to the stratum level of different brightness most bright, the picture effect that level is more to be presented is finer and smoother.
The GTG that 256 luminance levels can be showed is 256 GTGs.256 GTGs may include 256 grades of ashes from L0 GTGs to L255 GTGs
Rank.
The material of first underlay substrate is that transmitance is high, flexible substrate, the preferably transparent height such as PI substrates, PET
Molecular material substrate, or relatively thin glass substrate.
As shown in Fig. 2 the display panel also includes being arranged on the second electrode 60 away from the first underlay substrate 10 1
Second underlay substrate 70 of side, it is characterised in that also include being arranged on second underlay substrate 70 away from the first underlay substrate
The scattering layer 80 of 10 sides.
Due to the flexible of flexible display device, when realizing that light points to display on flexible device, showing for colour mixture be present
As in order to solve this problem, the present invention increases scattering layer in display panel, the difference that different screen periods are coupled out
The light of angle is broken up, and realizes normal liquid crystal display.
It should be noted that the making material of second underlay substrate is with first underlay substrate, it is no longer superfluous herein
State.In actual applications, the second underlay substrate and the first underlay substrate can also be made of other materials, herein no longer one by one
Enumerate.
Assuming that the screen periods of the first optical grating construction are P, width D1, D1/P are the dutycycle of optical grating construction, the first light
The thickness of grid structure is h1.According to grating equation：
Sin θ-sin θ 0=m λ/P (m=0, ± 1, ± 2 ...)
Wherein the diffraction angle of m order diffractions ripple is only determined by screen periods P, the wavelength X of incidence wave and incidence angle θ 0.If
Known incident wavelength and angle of diffraction, you can obtain the screen periods of needs.The calculating process is completed and optimized by simulation softward.
After the light direction of diffraction light is given, screen periods are then determined by above-mentioned grating equation corresponding to different color light.
In the embodiment of the present invention, the light direction of RGB sub-pixel is identical in a pixel cell, there is following two
The kind form of expression, first, it can be seen from above-mentioned grating equation, in the design of same structure, the screen periods of RGB wavelength
P1, P2, P3 relation are P1 ＞ P2 ＞ P3.The first form of expression is：In identical sub-pixel width, the rank of the first optical grating construction
Number relations be：Red exponent number is minimum (exponent number of the first optical grating construction included in red sub-pixel is minimum), and blue exponent number is most
More, what is shown in accompanying drawing 1 to 4 of the present invention is this form of expression；Second form of expression is the in RGB sub-pixel
The exponent number of one optical grating construction is identical, then the width of different subpixel is different, from the screen periods of each pixel wavelength, red son
The width of pixel is maximum, and blue width is minimum, and such a situation is not shown in figure.
The screen periods of first optical grating construction are preferably wavelength rank, and technological limits is arrived in worry, can be limited to less than
3um, and if the first optical grating construction of different color light dutycycle all same, the width of the first optical grating construction of different color light is not
Together, diffraction efficiency and half peak breadth can be optimized by adjusting the width of suitable first optical grating construction and dutycycle.
Second optical grating construction only serves the thick effect of support liquid crystal cell, and light will not spread out by the second optical grating construction
Penetrate, the width of the second optical grating construction is more than the width of the first optical grating construction, and the width of the second optical grating construction is more than 1um, is preferably
More than 3um.
The thickness of first optical grating construction is designated as h1, and the thickness of first electrode is h2, and the thickness of the second optical grating construction is h3, then
The relation of the thickness of first optical grating construction and the second optical grating construction thickness is preferably：(h3-h2-h1)/h3 ratio range is 015
Between~02.When the thickness relationship of two kinds of optical grating constructions meets above-mentioned condition, reach the second grating in display panel amount of bow
During the limit of structural elasticity deformation, the first optical grating construction can also play the thick effect of supporting case.
Fig. 4 is the light extraction schematic diagram under display panel case of bending, due to the first optical grating construction and the second optical grating construction
In the presence of and the difference of the thickness of two kinds of optical grating constructions, width and arrangement mode cause display panel in the bent state, liquid crystal
Overall orientation is changed, but for a pixel cell, liquid crystal is still perpendicular to the first underlay substrate and the second lining
The effective refractive index of substrate, i.e. liquid crystal does not change, and display effect does not also change, does not cause what display distorted
Phenomenon.
The display panel that the present embodiment provides includes the first underlay substrate, ducting layer, first electrode and second electrode, liquid crystal
It is provided with layer, wherein liquid crystal layer some for controlling the first coupling luminous optical grating construction of the ducting layer.Pass through the first grating
The mode of structure Coupling fiber waveguide light extraction realizes the purpose of liquid crystal display, without setting polaroid and color film in display panel
Layer, so as to improve the transmitance of display panel, and in display panel and is not provided with polaroid, therefore need not require that liquid crystal layer is whole
The phase-delay quantity of body, while it is relatively thin that liquid crystal cell thickness is set, so as to improve the response time of liquid crystal.
In display panel provided by the invention, some the second light for being used to support liquid crystal cell thick are additionally provided with the liquid crystal layer
Grid structure, it can support liquid crystal layer, will not occur to be brought by liquid crystal box thickness ununiformity in the state of display panel bends
The bad phenomenon of display.Moreover, when the bending curvature of display panel is larger, the first optical grating construction can also play supporting case
Thick effect, so as to ensure the display quality of display panel in the bent state.
The embodiment of the present invention also provides a kind of display device, and the display device includes above-mentioned liquid crystal display panel and backlight
Source 90, this backlight can be made up of the semiconductor laser chip of redgreenblue after mixed light, in order to improve the profit of light
With rate, the preferred collimated light source of backlight of the present invention, and the collimated light source is arranged at one of ducting layer in liquid crystal display panel
Plane where side, the light direction of light and ducting layer is parallel, as shown in figure 3, and backlight width can be ducting layer and
The width sum of second underlay substrate, the opposite side of the ducting layer are provided with barrier bed 100, the light in this face are mapped to for blocking,
Prevent it from being projected from barrier bed.This kind of display device has the display panel identical structure provided with previous embodiment and had
Beneficial effect.It will not be repeated here.
In actual applications, the width of backlight may be arranged as other width, but with not to liquid crystal layer and liquid crystal layer
Each layer transmitting light is advisable above.
It should be noted that above-mentioned collimated light source can pass through mixed light by the semiconductor laser chip of redgreenblue
After be made, can also be made up of the light-emitting diode chip for backlight unit of the good color of red, green, blue three of collimation after mixed light, can also be by
The good white light-emitting diode chip of collimation is made, and some light collimation knot can also be added by the cathode fluorescent tube of strip
It is configured to, the present invention is not limited this.
In order to can the width of the liquid crystal display panel match, can use and the liquid crystal display panel width phase one
Before the chip of laser or light-emitting diode chip for backlight unit bar, or light-emitting diode chip for backlight unit bar of cause plus expand mechanism, such as laser beam expanding
Device.
It should be noted that light-emitting device provided by the present invention can be Electronic Paper, oled panel, mobile phone, flat board electricity
Any product or part with display function such as brain, television set, display, notebook computer, DPF, navigator.
Although having been illustrated with some exemplary embodiments of the present invention above, those skilled in the art will manage
Solution, in the case where not departing from the principle or spirit of the present invention, these exemplary embodiments can be made a change, it is of the invention
Scope is limited by claim and its equivalent.
Claims (10)
- A kind of 1. display panel, it is characterised in that including be cascading the first underlay substrate, ducting layer, liquid crystal layer and Second electrode；Be provided with the liquid crystal layer it is some be used to controlling the first coupling luminous optical grating construction of the ducting layer, described the The side of one optical grating construction connects with the ducting layer, and opposite side is connected to first electrode.
- 2. display panel according to claim 1, it is characterised in that be additionally provided with the liquid crystal layer some for supporting liquid The second thick optical grating construction of brilliant box, the side of second optical grating construction connect with the ducting layer, second optical grating construction Thickness be more than first optical grating construction thickness.
- 3. display panel according to claim 2, it is characterised in that be provided between two neighboring second optical grating construction First optical grating construction of predetermined number, between two neighboring first optical grating construction or adjacent the first grating knot Pre-determined distance is spaced between structure and the second optical grating construction.
- 4. display panel according to claim 3, it is characterised in that the screen periods of first optical grating construction are by light extraction Direction, go out optical wavelength decision.
- 5. display panel according to claim 1, it is characterised in that first optical grating construction exists with the liquid crystal layer Fixed refractive index difference.
- 6. display panel according to claim 1, in addition to：The second electrode is arranged on away from the first underlay substrate one Second underlay substrate of side, it is characterised in that also include being arranged on second underlay substrate away from the first underlay substrate side Scattering layer.
- 7. display panel according to claim 1, it is characterised in that the refractive index of the ducting layer is higher than the described first lining The refractive index of substrate, so that light is totally reflected in the ducting layer.
- 8. according to the display panel described in any one of claim 6 or 7, it is characterised in that first underlay substrate and second Underlay substrate is that transmitance is high, flexible substrate.
- 9. a kind of display device, it is characterised in that including the display panel as described in any one of claim 1~8, be arranged at institute State the backlight of ducting layer side and be arranged at the barrier bed of the ducting layer opposite side.
- 10. display device according to claim 9, it is characterised in that the backlight includes side entering type collimated back light Source, its light direction are parallel with ducting layer.
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| CN201710686440.0A CN107357075A (en) | 2017-08-11 | 2017-08-11 | Display panel and display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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