CN110212011A - A kind of display panel and display device - Google Patents
A kind of display panel and display device Download PDFInfo
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- CN110212011A CN110212011A CN201910631169.XA CN201910631169A CN110212011A CN 110212011 A CN110212011 A CN 110212011A CN 201910631169 A CN201910631169 A CN 201910631169A CN 110212011 A CN110212011 A CN 110212011A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
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Abstract
The invention discloses a kind of display panel and display devices.The display panel includes: underlay substrate；The sub-pixel unit being set on underlay substrate；The functional layer being set on sub-pixel unit, wherein, brightness decay speed of the light that the sub-pixel unit that the corresponding functional layer of the sub-pixel unit of at least one color is used to balance at least one other colors adjacent with the sub-pixel unit of the color issues under big visual angle.The display panel can adjust the brightness decay speed that the light of different colours increases with visual angle, the problem of colour cast occur under big visual angle so as to improve the picture for being shown as white under positive visual angle.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of display panel and display devices.
Background technique
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display technology is a kind of great hair
The display technology of exhibition prospect, the organic light emitting display panel using technology production have self-luminous, ultra-thin, wide viewing angle, sound
It answers fast speed, low-power consumption and is widely used in display field the advantages that can realizing Flexible Displays.
The dot structure of existing organic light emitting display panel is the stepped construction of anode, luminous organic material, cathode.No
With the color difference for the light that the luminous organic material in pixel is issued, so that different pixels issue the light of different colours,
The combination of pixels of different colours constitutes picture.However, since the performance of the light of different colours has differences, so as to cause different face
Variation degree of the brightness for the light that the pixel of color is issued under big visual angle is different, causes organic light emitting display panel at positive visual angle
Under be shown as white picture occur brightness, color variation under big visual angle, colour cast is serious.
Summary of the invention
The present invention provides a kind of display panel and display device, can adjust the brightness that the light of different colours increases with visual angle
There is the problem of colour cast under big visual angle so as to improve the picture for being shown as white under positive visual angle in the rate of decay.
In a first aspect, the embodiment of the invention provides a kind of display panels, comprising:
Underlay substrate；The sub-pixel unit being set on underlay substrate；
The functional layer being set on sub-pixel unit, wherein the corresponding functional layer of the sub-pixel unit of at least one color
The light that sub-pixel unit for balancing at least one other colors adjacent with the sub-pixel unit of the color issues is regarding greatly
Brightness decay speed under angle.
Optionally, sub-pixel unit includes the first sub-pixel unit and the second sub-pixel unit, the first sub-pixel unit hair
The light of first color out, the second sub-pixel unit issue the light of the second color；
Functional layer includes the first functional layer and the second functional layer, and the first functional layer covers the first sub-pixel unit, the second function
Ergosphere covers the second sub-pixel unit；
If the light of the first color is bright under big visual angle less than the light of the second color in the brightness decay speed under big visual angle
The rate of decay is spent, then the second functional layer is used to absorb the light of the first color；
If the light of the first color is bright under big visual angle in the light that the brightness decay speed under big visual angle is greater than the second color
The rate of decay is spent, then the first functional layer is used to absorb the light of the second color.
Optionally, sub-pixel unit further includes third sub-pixel unit, and third sub-pixel unit issues the light of third color；
Functional layer further includes third functional layer, and third functional layer covers third sub-pixel unit；
If the light of the first color is bright under big visual angle in the light that the brightness decay speed under big visual angle is less than third color
The rate of decay is spent, then third functional layer is used to absorb the light of the first color；
If the light of the first color is bright under big visual angle in the light that the brightness decay speed under big visual angle is greater than third color
The rate of decay is spent, then the first functional layer is used to absorb the light of third color.
Optionally, if brightness decay speed of the light of the first color under big visual angle less than the second color light at big visual angle
Under brightness decay speed, then the material of the second functional layer has absorption to the spectrum of the light of the first color, alternatively, second
The extinction particle adulterated in functional layer has absorption to the spectrum of the light of the first color；
If the light of the first color is bright under big visual angle in the light that the brightness decay speed under big visual angle is greater than the second color
The rate of decay is spent, then the material of the first functional layer has absorption to the spectrum of the light of the second color, alternatively, the first functional layer
The extinction particle of middle doping has absorption to the spectrum of the light of the second color.
Optionally, if brightness decay speed of the light of the first color under big visual angle less than the second color light at big visual angle
Under brightness decay speed, then the refractive index of the first functional layer be greater than the second functional layer refractive index；
If the light of the first color is bright under big visual angle in the light that the brightness decay speed under big visual angle is greater than the second color
The rate of decay is spent, then refractive index of the refractive index of the first functional layer less than the second functional layer.
Optionally, if brightness decay speed of the light of the first color under big visual angle less than the second color light at big visual angle
Under brightness decay speed, then the refractive index of the material of the first functional layer be greater than the second functional layer material refractive index, alternatively,
The refractive index of the scattering particles adulterated in first functional layer is greater than the refractive index of the scattering particles adulterated in the second functional layer；
If the light of the first color is bright under big visual angle in the light that the brightness decay speed under big visual angle is greater than the second color
Spend the rate of decay, then the refractive index of the material of the first functional layer less than the material of the second functional layer refractive index, alternatively, the first function
Refractive index of the refractive index of the scattering particles adulterated in ergosphere less than the scattering particles adulterated in the second functional layer.
Optionally, the first functional layer, the second functional layer and the setting of third functional layer same layer.
Optionally, functional layer is that light removing layer, the first chemical vapor deposition layer, the second chemical vapor deposition layer and ink-jet are beaten
Print at least one layer in layer；Alternatively,
Functional layer is located at light removing layer, the first chemical vapor deposition layer, the second chemical vapor deposition layer and ink-jet printed layer
In at least one layer in.
Optionally, the thickness of functional layer be more than or equal to 5 μm, it is preferred that functional layer with a thickness of 8-10 μm.
Second aspect, the embodiment of the invention also provides a kind of display device, which includes having above-mentioned first
The display panel of aspect any feature.
The present invention provides a kind of display panel and display device, by being designed to functional layer, so that a certain color
Functional layer can balance at least one other colors adjacent with the sub-pixel unit of the color sub-pixel unit issue
Brightness decay speed of the light under big visual angle, and then reach the brightness decay speed that the light for adjusting different colours increases with visual angle
Purpose improves the picture for being shown as white under positive visual angle and the problem of colour cast occurs under big visual angle.
Detailed description of the invention
Fig. 1 is a kind of the schematic diagram of the section structure of display panel provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the section structure of another display panel provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Meanwhile the description of drawings and examples is illustrative rather than restrictive.Through the same attached of specification
Icon note indicates same element.In addition, for understanding and being easy to describe, may be exaggerated in attached drawing some layers, film, panel,
The thickness in region etc..Simultaneously it is understood that ought such as layer, film, region or substrate element be referred to as " " another element
When "upper", which can be directly on other elements or there may also be intermediary elements.In addition, " ... on " refer to by
Element is located on another element or below another element, but do not refer to substantially be located according to gravity direction it is another
On the upside of element.In order to make it easy to understand, being all the upside that element is drawn in another element in attached drawing of the present invention.
In addition, unless explicitly described as on the contrary, otherwise the deformation of word " comprising " and such as "comprising" or " having " will
It is construed as to imply that comprising the element, but is not excluded for any other element.
It should also be noted that, the "and/or" mentioned in the embodiment of the present invention refers to " it include one or more related institutes
Any and all combinations of list of items.Various assemblies are described with " first ", " second ", " third " etc. in the embodiment of the present invention,
But these components should not be limited by these terms.These terms are only used to distinguish a component with another component.And
And unless the context clearly indicates otherwise, otherwise singular "one", "an" and " should () " be also intended to include plural shape
Formula.
When can differently implement some embodiment, specific process sequence can differently be held with described sequence
Row.For example, two techniques continuously described can be executed substantially in the same time or by opposite with described sequence suitable
Sequence executes.
The white light that existing display panel is issued is made of red, green, blue three primary colours.However, due to three kinds of red, green, blue
The performance of the light of color has differences, and with the increase at visual angle, the attenuation degree of the light of three kinds of colors of red, green, blue is inconsistent, white
Light color will change, i.e. generation white light colour cast.The embodiment of the present invention provides a kind of display panel and display device, can adjust
The brightness decay speed that the light of section different colours increases with visual angle, so as to improve the picture of white is shown as under positive visual angle big
There is the problem of colour cast under visual angle.
In the following, the structure and its technical effect to display panel are described in detail.
In addition, in following embodiments being illustrated by rectangle of display panel, in actual application, show
Show that panel can also be that regularly or irregularly shape, the present invention are not specifically limited this for circle, polygon etc..Meanwhile
In order to more clearly describe the luminescent layer in display panel, display panel is had adjusted accordingly in the following attached drawings of the embodiment of the present invention
In each structure size.
Fig. 1 shows a kind of the schematic diagram of the section structure of display panel provided in an embodiment of the present invention.Illustratively, this is aobvious
Show that panel includes: underlay substrate 10, sub-pixel unit (wherein, the sub-pixel unit packet shown in FIG. 1 on underlay substrate 10
The first sub-pixel unit 11, the second sub-pixel unit 12 and third sub-pixel unit 13 are included, in order to make it easy to understand, only drawing in Fig. 1
Two the first sub-pixel units, 11, two the second sub-pixel units 12 and two third sub-pixel units 13 are gone out).First sub- picture
Plain unit 11 issues the light of the first color, and the second sub-pixel unit 12 issues the light of the second color, and third sub-pixel unit 13 is sent out
The light of third color out.
The functional layer being set on sub-pixel unit, functional layer include the first functional layer 14, the second functional layer 15 and third
Functional layer 16, the first functional layer 14 cover the first sub-pixel unit 11, and the second functional layer 15 covers the second sub-pixel unit 12, the
Three functional layers 16 cover third sub-pixel unit 13.
Since the performance of the light (usually three color of red, green, blue) of the first color, the second color and third color has differences
(such as wavelength different), with the increase at visual angle, the first color, the second color and third color light attenuation degree it is different
It causes, the white light color that display panel issues will change, i.e. generation white light colour cast.To solve the above-mentioned problems, at least one
The corresponding functional layer of the sub-pixel unit of color is used to balance at least one other face adjacent with the sub-pixel unit of the color
Brightness decay speed of the light that the sub-pixel unit of color issues under big visual angle.
In the following, by taking the light of the first color and the light of the second color as an example, to explain in detail " the sub-pixel of at least one color
The corresponding functional layer of unit is used to balance the sub-pixel list of at least one other colors adjacent with the sub-pixel unit of the color
The concrete meaning of brightness decay speed of the light that member issues under big visual angle ".
Assuming that the light of the first color the brightness decay speed under big visual angle less than the second color light under big visual angle
Brightness decay speed, then needing to accelerate brightness decay speed of the light of the first color under big visual angle to improve colour cast problem
Degree.Therefore, the light of the first color can be absorbed in the second functional layer 15 covered above the second sub-pixel unit 12, in this way, first
The big visual angle amount of light of sub-pixel unit 11 is reduced, and small angle amount of light is opposite to be enhanced, to accelerate the light of the first color big
Brightness decay speed under visual angle.
Optionally, the second functional layer 15 can be realized by least one of following methods absorbs the first color
Light:
Method one, the second functional layer 15 material there is absorption to the spectrum of the light of the first color.
The extinction particle adulterated in method two, the second functional layer 15 has absorption to the spectrum of the light of the first color.
It should be noted that the essence of light is electromagnetic wave, practical glazed thread is beaten in any object, and the molecule of substance is (former
Son) reaction will be generated to light.It is the main reason for color is presented in object that selection, which absorbs,.In certain wave-length coverage, if
Substance is all made equivalent (referring to energy) to the light of the various wavelength by it and is absorbed, then this substance is referred to as general absorbs；If substance
The luminous energy of certain wavelength is absorbed than more significant, then claims this substance that there is selection absorbability.Therefore, the material of the second functional layer
And/or the second extinction particle that adulterates in the functional layer selection absorbability of the material only need to select that there is to(for) the light of the first color
?.
Similarly, it is assumed that brightness decay speed of the light of the first color under big visual angle is greater than the light of the second color at big visual angle
Under brightness decay speed, then needing brightness of the light for delaying the first color under big visual angle to decline to improve colour cast problem
Deceleration.Therefore, the light of the second color can be absorbed in the first functional layer 14 covered above the first sub-pixel unit 11, in this way,
The big visual angle amount of light of second sub-pixel unit 12 is reduced, and small angle amount of light is opposite to be enhanced, to accelerate the light of the second color
Brightness decay speed under big visual angle reaches the mesh of the opposite brightness decay speed for delaying the light of the first color under big visual angle
's.
Optionally, the first functional layer can realize the light for absorbing the second color by least one of following methods:
Method one, the first functional layer material there is absorption to the spectrum of the light of the second color.
The extinction particle adulterated in method two, the first functional layer has absorption to the spectrum of the light of the second color.
Further, display panel provided in an embodiment of the present invention can also be to the first functional layer 14, the second functional layer 15
It is designed with the refractive index of third functional layer 16:
Equally by taking the light of the first color and the light of the second color as an example, it is assumed that brightness of the light of the first color under big visual angle
The rate of decay less than the second color brightness decay speed of the light under big visual angle, design so that the first functional layer 14 refractive index
Greater than the refractive index of the second functional layer 15, the small angle amount of light of the light of the first color can be increased, reduce the light of the first color
Big visual angle amount of light, to accelerate brightness decay speed of the light under big visual angle of the first color.
Optionally, the refractive index that the refractive index of the first functional layer 14 is greater than the second functional layer 15 can be by following methods
At least one realize:
The refractive index of the material of method one, the first functional layer 14 is greater than the refractive index of the material of the second functional layer 15.
The refractive index of the scattering particles adulterated in method two, the first functional layer is greater than the scattering adulterated in the second functional layer
The refractive index of grain.
Similarly, it is assumed that brightness decay speed of the light of the first color under big visual angle is greater than the light of the second color at big visual angle
Under brightness decay speed, design so that the refractive index of the first functional layer 14 can subtract less than the refractive index of the second functional layer 15
The small angle amount of light of the light of few first color, increases the big visual angle amount of light of the light of the first color, to delay the first color
Brightness decay speed of the light under big visual angle.
Optionally, the refractive index of the first functional layer 14 can be by following methods less than the refractive index of the second functional layer 15
At least one realize:
Refractive index of the refractive index of the material of method one, the first functional layer 14 less than the material of the second functional layer 15.
The refractive index of the scattering particles adulterated in method two, the first functional layer 14 is dissipated less than what is adulterated in the second functional layer 15
Penetrate the refractive index of particle.
It is understood that the scattering particles and extinction particle mentioned in the embodiment of the present invention can be a kind of particle,
It can be different particle, the embodiment of the present invention is not specifically limited this.
The shape of particle is not limited in the present embodiment, optionally, particle can be spherical shape, elliposoidal, quadrangle, polygon
Or triangle etc..For convenience of manufacture, and make scattering power/absorbing ability stronger, particle is chosen as spherical shape in the present embodiment,
And for scattering particles, spherical scattering particles are consistent to the scattering property of the incident light of all directions.
In addition, above-described embodiment is only merely to adjust different face to how the display panel that the embodiment of the present invention is mentioned is realized
The exemplary illustration for the brightness decay speed that the light of color increases with visual angle, in conjunction with Fig. 1 as can be seen that due to the first sub-pixel unit
11 between the second sub-pixel unit 12 and third sub-pixel unit 13, the second sub-pixel unit 12 is located at the first sub-pixel list
Member 11 and third sub-pixel unit 13 between, third sub-pixel unit 13 be located at the first sub-pixel unit 11 and the second sub-pixel list
Between member 12, therefore, the brightness decay speed that the light to adjust one of color increases with visual angle can design this simultaneously
Functional layer above the sub-pixel unit of other colors of color two sides.
For example, if the light of the first color the brightness decay speed under big visual angle less than the second color light under big visual angle
Brightness decay speed and brightness decay speed of the light under big visual angle of the first color be less than the light of third color at big visual angle
Under brightness decay speed, then the second functional layer 15 and third functional layer 16 be used equally for absorb the first color light；If first
The light of color is greater than brightness decay speed of the light under big visual angle of the second color and the in the brightness decay speed under big visual angle
The light of one color is greater than brightness decay speed of the light of third color under big visual angle in the brightness decay speed under big visual angle, then
First functional layer 14 can be used for absorbing the light of the second color and the light of third color.In this way, the light to different colours can be enhanced
With the adjusting for the brightness decay speed that visual angle increases.
It should be noted that the method that third functional layer 16 absorbs the light of the first color is referred to above-mentioned second functional layer
15 absorb the method for the light of the first color；The method that first functional layer 14 absorbs the light of third color is referred to above-mentioned first function
The method that ergosphere 14 absorbs the light of the second color, for sake of simplicity, details are not described herein again.
Functional layer may include that light removing layer, the first chemical vapor deposition layer, the second chemical vapor deposition layer and ink-jet are beaten
Print at least one layer in layer；Alternatively, functional layer is located at light removing layer, the first chemical vapor deposition layer, the second chemical vapor deposition
In at least one layer in layer and ink-jet printed layer.Functional layer can using vapor deposition, spin coating, inkjet printing, chemical vapor deposition or
Person's silk-screen printing technique is formed, wherein the first chemical vapor deposition layer and the second chemical vapor deposition layer can be using chemistry
Different encapsulated layers are made in vapour deposition process.
Optionally, the material of functional layer can be organic material, inorganic material or organic-inorganic composite material, wherein
Organic-inorganic composite material has had both the advantage of inorganic material water oxygen good barrier property and organic material good film-forming property.
The thickness of functional layer is more than or equal to 5 μm, with assurance function layer to absorption/refraction effect of light.Certainly, function
The thickness of layer is also unsuitable blocked up, to guarantee the lightening of display panel.Optionally, functional layer with a thickness of 8-10 μm.
Optionally, the first functional layer 14, the second functional layer 15 and the setting of 16 same layer of third functional layer.First functional layer 14
Thickness is not equal to the thickness of the second functional layer, and the thickness of the first functional layer is not equal to the thickness of third functional layer；Second functional layer
Thickness be not equal to third functional layer thickness.Alternatively, the thickness of the first functional layer is equal to the thickness of the second functional layer, and it is equal to
The thickness of third functional layer.
It should be noted that functional layer is located in ink-jet printed layer mainly so that functional layer is located in ink-jet printed layer as an example
May include any one in following two kinds of scenes:
The direction of scene one, edge from underlay substrate to pixel unit, ink-jet printed layer are divided into upper layer and lower layer.
Wherein, functional layer can be the ink-jet printed layer positioned at upper layer, be also possible to the ink-jet printed layer positioned at lower layer.
The direction of scene two, edge from underlay substrate to pixel unit, ink-jet printed layer are divided into two layers of upper, middle and lower.
Wherein, functional layer is the ink-jet printed layer positioned at intermediate one layer, i.e. the functional layer ink-jet printed layer that is clipped in upper layer
Between the ink-jet printed layer of lower layer.
Fig. 2 shows the schematic diagram of the section structure of another display panel provided in an embodiment of the present invention.The display panel
It include: underlay substrate 20, the first sub-pixel unit, the second sub-pixel unit and third sub-pixel list on underlay substrate 20
Member, (in order to make it easy to understand, two pixel units are only depicted in Fig. 2, i.e. two the first sub-pixel units, two the second sub- pictures
Plain unit and two third sub-pixel units).First sub-pixel unit issues blue light, and the second sub-pixel unit issues feux rouges, the
Three sub-pixel units issue green light.
From figure 2 it can be seen that the first sub-pixel unit includes: anode 21a, hole injection layer HIL a, hole transmission layer
HTL a, electronic barrier layer EBL a, luminescent layer EML a, hole blocking layer HBL a, electron transfer layer ETL a, electron injecting layer
EIL a, cathode 22a.Second sub-pixel unit includes: anode 21b, hole injection layer HIL b, hole transmission layer HTL b, electronics
Barrier layer EBL b, luminescent layer EML b, hole blocking layer HBL b, electron transfer layer ETL b, electron injecting layer EIL b, cathode
22b.Third sub-pixel unit includes: anode 21c, hole injection layer HIL c, hole transmission layer HTL c, electronic barrier layer EBL
C, luminescent layer EML c, hole blocking layer HBL c, electron transfer layer ETL c, electron injecting layer EIL c, cathode 22c.
In addition, the top of the first sub-pixel unit is also disposed with the light removing layer CPL of the first sub-pixel unit of covering
A, the first chemical vapor deposition layer CVD1a, ink-jet printed layer IJP a and the second chemical vapor deposition layer CVD2a.Second sub-pixel
The top of unit is also disposed with light removing layer CPL b, the first chemical vapor deposition layer of the second sub-pixel unit of covering
CVD1b, ink-jet printed layer IJP b and the second chemical vapor deposition layer CVD2b.The top of third sub-pixel unit is also set gradually
Have covering light removing layer CPL c of third sub-pixel unit, the first chemical vapor deposition layer CVD1c, ink-jet printed layer IJP c and
Second chemical vapor deposition layer CVD2c.
Optionally, the first functional layer mentioned in above-described embodiment can be light removing layer CPL a, the first chemical vapor deposition
At least one layer in lamination CVD1a, ink-jet printed layer IJP a and the second chemical vapor deposition layer CVD2a；Similarly, the second function
Layer can be light removing layer CPL b, the first chemical vapor deposition layer CVD1 b, ink-jet printed layer IJP b and the second chemical gaseous phase
At least one layer in sedimentary CVD2b, third functional layer can be light removing layer CPL c, the first chemical vapor deposition layer
At least one layer in CVD1c, ink-jet printed layer IJP c and the second chemical vapor deposition layer CVD2c.In this way, by not sharing the same light
The choosing of removing layer, the first chemical vapor deposition layer, ink-jet printed layer, the refractive index of the second chemical vapor deposition layer, absorbent properties
It selects, the different brightness decay speed that increase with visual angle of adjustment light, it is adjustable to play the role of brightness decay speed, reaches improvement visual angle
The purpose of colour cast.
It is ink-jet printed layer IJP a, the second functional layer with the first functional layer is ink-jet in a kind of possible embodiment
Printable layer IJP b, third functional layer are ink-jet printed layer IJP c, and that white color is generated under big visual angle is wilfully blue for display panel
For, since to generate white color under big visual angle wilfully blue for display panel, ink-jet printed layer IJP b and/or inkjet printing
The material of layer IJP c can absorb blue light, to accelerate the brightness decay speed of blue light.Meanwhile in ink-jet printed layer IJP a, spray
In the selection of the material of black printable layer IJP b and ink-jet printed layer IJP c, the refractive index of ink-jet printed layer IJP a is beaten greater than ink-jet
The refractive index of layer IJP b is printed, the refractive index of ink-jet printed layer IJP a is greater than the refractive index of ink-jet printed layer IJP c, equally can be with
Achieve the purpose that the brightness decay speed for accelerating blue light.And according to actual needs, the refractive index of ink-jet printed layer IJP b can wait
In the refractive index of ink-jet printed layer IJP c, the refractive index of ink-jet printed layer IJP c can also be not equal to.
In addition, can be seen that the thickness difference due to the hole transmission layer of different colours, i.e. hole transmission layer in conjunction with Fig. 2
HTL a, hole transmission layer HTL b are different with the thickness of hole transmission layer HTL c, while in order to planarize display panel, ink-jet
The thickness of printable layer IJP a is not equal to the thickness of ink-jet printed layer IJP b, and the thickness of ink-jet printed layer IJP a is not equal to ink-jet
The thickness of printable layer IJP c, the thickness of ink-jet printed layer IJP b are not equal to the thickness of ink-jet printed layer IJP c.It is understood that
It is that in other achievable embodiments, the thickness of ink-jet printed layer IJP a can be equal to the thickness of ink-jet printed layer IJP b
Degree, the thickness of ink-jet printed layer IJP a can also be equal to the thickness of ink-jet printed layer IJP c.
It is light removing layer CPL a, the second functional layer with the first functional layer is that light takes in alternatively possible embodiment
Out layer CPL b, third functional layer be light removing layer CPL c and display panel generated under big visual angle white color it is wilfully red for,
Since to generate white color under big visual angle wilfully red for display panel, light removing layer CPL a and/or light removing layer CPL c's
Material can absorb feux rouges, to accelerate the brightness decay speed of feux rouges.Meanwhile in light removing layer CPL a, light removing layer CPL b
In the material selection of light removing layer CPL c, the refractive index of light removing layer CPL b is greater than the refractive index of light removing layer CPL a, light
The refractive index of removing layer CPL b is greater than the refractive index of light removing layer CPL c, equally can achieve the brightness decay speed for accelerating feux rouges
The purpose of degree.And according to actual needs, the refractive index of light removing layer CPL a can be equal to the refractive index of light removing layer CPL c,
The refractive index of light removing layer CPL c can be not equal to.
In addition, being equal to the thickness of light removing layer CPL b in conjunction with Fig. 2 thickness that can be seen that light removing layer CPL a, and wait
In the thickness of light removing layer CPL c, light removing layer CPL a, light removing layer CPL b and light removing layer CPL c can be by primary
Technique is formed, to reduce manufacture difficulty.It is understood that in other achievable embodiments, light removing layer CPL a's
Thickness can be not equal to the thickness of light removing layer CPL b, and the thickness of light removing layer CPL a can also be not equal to light removing layer CPL
The thickness of c, the thickness of light removing layer CPL b can also be not equal to the thickness of light removing layer CPL c.
Also you need to add is that, display panel provided in an embodiment of the present invention is in addition to being suitable for three primary colours (such as red, green, blue)
Display panel outside, apply also for the display panel of four primary, adjust the brightness decay that the light of different colours increases with visual angle
The method of speed is similar to the above embodiments, for sake of simplicity, details are not described herein again.
The embodiment of the present invention provides a kind of display panel, comprising: underlay substrate；The sub-pixel list being set on underlay substrate
Member；The functional layer being set on sub-pixel unit, wherein the corresponding functional layer of the sub-pixel unit of at least one color is for putting down
The light that the sub-pixel unit at least one other colors adjacent with the sub-pixel unit of the color that weigh issues is under big visual angle
Brightness decay speed.By being designed to functional layer, the functional layer of a certain color is enabled to balance the son with the color
Brightness decay speed of the light that the sub-pixel unit of other adjacent at least one colors of pixel unit issues under big visual angle, into
And achieve the purpose that adjust the brightness decay speed that the light of different colours increases with visual angle, improvement is shown as white under positive visual angle
Picture there is the problem of colour cast under big visual angle.
The embodiment of the present invention also provides a kind of display device, which includes any that there is above-described embodiment to describe
The display panel of feature.
Wherein, display panel can be flexible organic light emitting display panel or non-flexible organic light emitting display panel.It should
The light-emitting mode of organic light emitting display panel can be top shine, bottom shine or double-side.
Display device provided in an embodiment of the present invention can be applied in intelligent wearable device (such as Intelligent bracelet, intelligent hand
Table) in, it can also apply in the equipment such as smart phone, tablet computer, display.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of display panel characterized by comprising
Underlay substrate；The sub-pixel unit being set on the underlay substrate；
The functional layer being set on the sub-pixel unit, wherein the corresponding function of the sub-pixel unit of at least one color
The light that the sub-pixel unit that ergosphere is used to balance at least one other colors adjacent with the sub-pixel unit of the color issues exists
Brightness decay speed under big visual angle.
2. display panel according to claim 1, which is characterized in that the sub-pixel unit includes the first sub-pixel unit
With the second sub-pixel unit, first sub-pixel unit issues the light of the first color, and second sub-pixel unit issues the
The light of second colors；
The functional layer includes the first functional layer and the second functional layer, and first functional layer covers the first sub-pixel list
Member, second functional layer cover second sub-pixel unit；
If the light of first color is less than the light of second color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then second functional layer is used to absorb the light of the first color；
If the light of first color is greater than the light of second color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then first functional layer is used to absorb the light of the second color.
3. display panel according to claim 2, which is characterized in that the sub-pixel unit further includes third sub-pixel list
Member, the third sub-pixel unit issue the light of third color；
The functional layer further includes third functional layer, and the third functional layer covers the third sub-pixel unit；
If the light of first color is less than the light of the third color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then the third functional layer is used to absorb the light of the first color；
If the light of first color is greater than the light of the third color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then first functional layer is used to absorb the light of third color.
4. display panel according to claim 2, which is characterized in that
If the light of first color is less than the light of second color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then the material of second functional layer has absorption to the spectrum of the light of the first color, alternatively, institute
Stating the extinction particle adulterated in the second functional layer has absorption to the spectrum of the light of the first color；
If the light of first color is greater than the light of second color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then the material of first functional layer has absorption to the spectrum of the light of the second color, alternatively, institute
Stating the extinction particle adulterated in the first functional layer has absorption to the spectrum of the light of the second color.
5. display panel according to claim 2, which is characterized in that if the light of first color is bright under big visual angle
It spends the rate of decay and is less than brightness decay speed of the light of second color under big visual angle, the then refraction of first functional layer
Rate is greater than the refractive index of the second functional layer；
If the light of first color is greater than the light of second color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then refractive index of the refractive index of first functional layer less than the second functional layer.
6. display panel according to claim 4, which is characterized in that
If the light of first color is less than the light of second color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then the refractive index of the material of first functional layer be greater than the second functional layer material refractive index, or
Person, the refractive index of the scattering particles adulterated in first functional layer are greater than the refraction of the scattering particles adulterated in the second functional layer
Rate；
If the light of first color is greater than the light of second color under big visual angle in the brightness decay speed under big visual angle
Brightness decay speed, then the refractive index of the material of first functional layer less than the material of the second functional layer refractive index, or
Person, the refraction of the refractive index of the scattering particles adulterated in first functional layer less than the scattering particles adulterated in the second functional layer
Rate.
7. display panel according to claim 3, which is characterized in that first functional layer, second functional layer and
The third functional layer same layer setting.
8. display panel according to any one of claims 1-7, which is characterized in that the functional layer is light taking-up
At least one layer in layer, the first chemical vapor deposition layer, the second chemical vapor deposition layer and ink-jet printed layer；Alternatively,
The functional layer is located at the smooth removing layer, first chemical vapor deposition layer, second chemical vapor deposition layer
In at least one layer in the ink-jet printed layer.
9. display panel according to any one of claims 1-7, which is characterized in that the thickness of the functional layer is greater than
Or be equal to 5 μm, it is preferred that the functional layer with a thickness of 8-10 μm.
10. a kind of display device, which is characterized in that including the display panel as described in any one of claim 1-9.
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| CN201910631169.XA CN110212011B (en) | 2019-07-12 | 2019-07-12 | Display panel and display device |
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