CN108520890A - Display base plate and preparation method thereof and display panel - Google Patents
Display base plate and preparation method thereof and display panel Download PDFInfo
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- CN108520890A CN108520890A CN201810353912.5A CN201810353912A CN108520890A CN 108520890 A CN108520890 A CN 108520890A CN 201810353912 A CN201810353912 A CN 201810353912A CN 108520890 A CN108520890 A CN 108520890A
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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
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The invention discloses a kind of display base plate and preparation method thereof and display panels, including：Underlay substrate and the colored hair photosphere on the underlay substrate and magnetic field generation layer；The colored hair photosphere includes：The material of several colorful light-emitting figures, the colorful light-emitting figure includes：Mangneto adjustable refractive index material and the embedded photoluminescent material being scattered in the mangneto adjustable refractive index material；Layer occurs for the magnetic field：With several one-to-one transparent electrodes of the colorful light-emitting figure, the transparent electrode is oppositely arranged with corresponding institute's colorful light-emitting figure, the transparent electrode is used to generate corresponding magnetic field according to the driving current received, to adjust the refractive index of the corresponding colorful light-emitting figure.Technical scheme of the present invention is independently controlled by the luminous intensity that goes out of the light-emitting surface to each colorful light-emitting figure, can promote the uniformity of chromaticity of picture shown by display panel, to solve the problems, such as the colour cast caused by colorful light-emitting figure degree of aging unevenness.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of display base plate and preparation method thereof and display panel.
Background technology
Organic electroluminescent diode (Organic Light-Emitting Diode, abbreviation OLED) device is by highlighted
Degree, fast response time, can be used for the advantages that Flexible Displays at full view, it has also become the next generation of great competitiveness and development prospect
Display technology.
In OLED display panel, the white light that is mainly sent out by white light OLED excites the embedded photoluminescent material (to receive
The material of light of particular color can be sent out after to illumination) it shines, to realize colored display.Currently, used in OLED display panel
Embedded photoluminescent material is generally blue fluorescent material, green/yellow phosphor material.It finds in practical applications, when with using
Between growth, embedded photoluminescent material (fluorescent material and phosphor material) gradually aging cause luminance to be gradually reduced；Wherein, blue
The luminance decrease speed of fluorescent material is faster than the luminance decrease speed of green/yellow phosphor material, works as blue fluorescent material
The difference of luminance of luminance and green/yellow phosphor material when reaching certain value, show the ingredient of green light/yellow light in picture
The ingredient of apparent extra blue light, shows that the coloration of picture is uneven, whole that jaundice or greening is presented.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art, it is proposed that a kind of display base plate and its
Preparation method and display panel.
To achieve the above object, the present invention provides a kind of display base plates includes：Underlay substrate and be located at the substrate
Layer occurs for colored hair photosphere and magnetic field on substrate；
The colored hair photosphere includes：The material of several colorful light-emitting figures, the colorful light-emitting figure includes：Mangneto
Adjustable refractive index material and the embedded photoluminescent material being scattered in the mangneto adjustable refractive index material；
Layer occurs for the magnetic field：It is described with several one-to-one transparent electrodes of the colorful light-emitting figure
Prescribed electrode is oppositely arranged with corresponding institute's colorful light-emitting figure, and the transparent electrode is used to be generated according to the driving current received
Corresponding magnetic field, to adjust the refractive index of the corresponding colorful light-emitting figure.
Optionally, the mangneto adjustable refractive index material includes：Transparent decentralized medium and it is scattered in the transparent dispersion
Transparent Magnetic Materials and refractive index in medium regulate and control particle；
Distribution of the Transparent Magnetic Materials in the transparent decentralized medium can change under the control of externally-applied magnetic field, from
And adjust the density and refractive index of the colorful light-emitting figure.
Optionally, the refractive index regulation and control particle includes：Nano SiO 2 particle or zirconium dioxide nanoparticles.
Optionally, further include：With several one-to-one driving structures of the transparent electrode, the driving structure is used for
Driving current is generated according to voltage is adjusted, and the driving current is exported to the corresponding transparent electrode；
The adjusting voltage is pre-set voltage corresponding with the refractive index of colorful light-emitting figure.
Optionally, the display base plate further includes：Several the first grid lines and several the first data lines, the first grid
Line and first data line limit several pixel regions, and all the pixel region constitutes pel array；
It is respectively provided with that there are one the colorful light-emitting figures, corresponding with the colorful light-emitting figure in each pixel region
A transparent electrode and a driving structure corresponding with the transparent electrode；
The driving structure includes：Switching transistor, driving transistor and storage capacitance；
The control pole of the switching transistor is connected with first grid line of corresponding row, and the first of the switching transistor
First data line of pole and respective column connects, the control pole of the second pole and the driving transistor of the switching transistor
Connection；
The first end of the control pole of the driving transistor and storage capacitance connects, the first pole of the driving transistor with
First power end connects, and the second pole of the driving transistor is connected with the first end of the corresponding transparent electrode, described
The second end of prescribed electrode is connect with second source end；
The second end of the storage capacitance connect or is grounded with the second source end.
Optionally, further include：Shading graph, the shading graph cover and are not provided with the colour on the display base plate
The region of luminous pattern..
Optionally, the transparent electrode is located at the colorful light-emitting figure backwards to the side of the underlay substrate；
Alternatively, the transparent electrode is located at the colorful light-emitting figure towards the side of the underlay substrate.
To achieve the above object, the present invention also provides a kind of display panels, including：Such as above-mentioned display base plate.
To achieve the above object, the present invention also provides a kind of preparation methods of display base plate, including：
Magnetic field is formed on underlay substrate, layer and colored hair photosphere occurs, wherein the colored hair photosphere includes：Several
The material of colorful light-emitting figure, the colorful light-emitting figure includes：Mangneto adjustable refractive index material is rolled over the mangneto is scattered in
Penetrate the embedded photoluminescent material in rate adjusting material；Layer occurs for the magnetic field：It is one-to-one with the colorful light-emitting figure
Several transparent electrodes, the transparent electrode are oppositely arranged with corresponding institute's colorful light-emitting figure, and the transparent electrode is used for root
Corresponding magnetic field is generated according to the driving current received, to adjust the refractive index of the corresponding colorful light-emitting figure.
Optionally, the mangneto adjustable refractive index material includes：Transparent decentralized medium and it is scattered in the transparent dispersion
Transparent Magnetic Materials and refractive index in medium regulate and control particle；
Formed colorful light-emitting figure the step of include：
The embedded photoluminescent material, the Transparent Magnetic Materials and the refractive index regulation and control uniform particle are scattered in described
In transparent dispersion medium solution, to obtain mixed solution；
The mixed solution described in spin coating on the underlay substrate, and curing process is carried out to it, it is thin to obtain colorful light-emitting
Film；
Patterned process is carried out to the colorful light-emitting film, to obtain the colorful light-emitting figure.
Description of the drawings
Fig. 1 is the schematic cross-section of OLED display panel in the prior art；
Fig. 2 is a kind of schematic cross-section for display base plate that the embodiment of the present invention one provides；
Fig. 3 is the structural schematic diagram of colored luminous pattern in Fig. 2；
Fig. 4 is sent out the light path schematic diagram of light by embedded photoluminescent material；
Fig. 5 is the operation principle schematic diagram of mangneto adjustable refractive index material in the present invention；
Fig. 6 is a kind of schematic top plan view for display base plate that the embodiment of the present invention one provides；
Fig. 7 is a kind of schematic cross-section of display base plate provided by Embodiment 2 of the present invention；
Fig. 8 is a kind of preparation method flow chart for display base plate that the embodiment of the present invention four provides.
Specific implementation mode
To make those skilled in the art more fully understand technical scheme of the present invention, the present invention is carried below in conjunction with the accompanying drawings
A kind of display base plate supplied and preparation method thereof and display panel are described in detail.
Fig. 1 is the schematic cross-section of OLED display panel in the prior art, as shown in Figure 1, the OLED display panel includes：
Array substrate 1 and there are several pixel regions with being divided to box substrate 2, in OLED display panel of being oppositely arranged of array substrate 1,
It is formed in array substrate 1 and sends out white light with several one-to-one OLED of pixel region, OLED.To being formed on box substrate 2
Chromatic colour luminescent layer, color film luminescent layer include：With OLED one-to-one several colorful light-emitting figures 3, wherein colorful light-emitting
The material of figure 3 is embedded photoluminescent material, such as blue fluorescent material, green phosphorescent material, yellow phosphorescence material etc..
When the illumination that OLED is sent out is incident upon colorful light-emitting figure 3, embedded photoluminescent material is excited and is sent out corresponding bright
The light of particular color of degree, the light emission luminance of each colorful light-emitting figure 3 and its own luminance and receives the sent out light of OLED
Brightness it is related.The emitting brightness of each pixel region is determined by the light emission luminance of corresponding colorful light-emitting figure 3.
Include with pixel region：For blue pixel area and yellow pixel region, colorful light-emitting figure 3 includes that blue is sent out
The material of light figure B and Yellow luminous figure Y, blue-light-emitting figure B are blue fluorescent material, the material of Yellow luminous figure Y
For yellow phosphorescence material.The OLED display panel after a period of use, due to reduction of speed under the luminance of blue fluorescent material
It spends fast (luminance is relatively low), thus blue-light-emitting figure B sends out the intrinsic brilliance of blue light much smaller than theoretical brightness；With this
Simultaneously as the luminance decrease speed of yellow phosphorescence material is compared with slow (luminance is relatively high), thus Yellow luminous figure Y is sent out
The intrinsic brilliance for going out yellow light is slightly less than theoretical brightness；At this point, there is apparent partially yellow, display because yellow component is more in display picture
The coloration of picture is uneven.
To solve the problems, such as that display picture is partially yellow, the quantity for increasing blue pixel area is often selected in the prior art, with
Promote the ingredient for showing blue light in picture, i.e. two blue pixel areas collocation, one yellow pixel region, referred to as B/Y/B knots
Structure.However, the OLED display panel with B/Y/B structures, using initial stage, blue light ingredient is more in display panel, display
Picture is partially blue.It can be seen that the prior art can not fundamentally solve the problems, such as that display picture chromenence is non-uniform.
In view of the above-mentioned problems, the present invention provides a kind of display base plate and preparation method thereof and display panels.
Fig. 2 is a kind of schematic cross-section for display base plate that the embodiment of the present invention one provides, and Fig. 3 is colorful light-emitting in Fig. 2
The structural schematic diagram of figure, as shown in Figures 2 and 3, the display base plate are to be oppositely arranged with array substrate in OLED display panel
To box substrate, which includes：Underlay substrate 4 and the colored hair photosphere on underlay substrate 4 and magnetic field generation
Layer；Wherein, colored hair photosphere includes：Several colorful light-emitting figures 3 (colorful light-emitting figure 3 is corresponded with pixel region),
The material of colorful light-emitting figure 3 includes：It mangneto adjustable refractive index material 3a and is scattered in mangneto adjustable refractive index material 3a
Embedded photoluminescent material 3b；Layer occurs for magnetic field：With several the one-to-one transparent electrodes 5 of colorful light-emitting figure 3, transparent electricity
Pole 5 is oppositely arranged with corresponding institute's colorful light-emitting figure 3, and transparent electrode 5 is used to be generated according to the driving current received corresponding
Magnetic field, to adjust the refractive index of corresponding colorful light-emitting figure 3.
Wherein, underlay substrate 4 can be glass substrate or flexible base board.Embedded photoluminescent material 3b can be fluorescent material or
Phosphor material.It should be noted that embedded photoluminescent material 3b can included in colorful light-emitting figure 3 in different pixels unit
It can also be different with identical, specific material can be selected according to actual needs.
Colorful light-emitting figure 3 is sent out backwards to a side surface of underlay substrate 4 for corresponding OLED on receiving array substrate
The light gone out, the embedded photoluminescent material 3b in colorful light-emitting figure 3 is by the light of particular color for sending out corresponding bright after illumination, the portion
Part in light splitting will be projected by colorful light-emitting figure 3 towards a side surface of underlay substrate 4.
In the present invention, when being applied with driving current in transparent electrode 5, since electric current has magnetic effect, then transparent
There is corresponding magnetic field around electrode 5, the mangneto refractive index tune in colorful light-emitting figure corresponding with the transparent electrode 53
Material 3a is saved in response to magnetic fields, the refractive index of colorful light-emitting figure 3 can be adjusted.When the folding of colorful light-emitting figure 3
When the rate of penetrating changes, colorful light-emitting figure 3 towards at a side surface of underlay substrate 4 transmissivity and reflectivity can occur
Variation, is adjusted so as to the practical emitting brightness to the pixel region.
Carry out the original of the emitting brightness to adjusting respective pixel region in the present invention by transparent electrode 5 below in conjunction with attached drawing
Reason is described in detail.Be located at colorful light-emitting figure 3 towards the side of underlay substrate 4 with transparent electrode 5 and with colorful light-emitting figure
In case of shape 3 is in contact, exemplary description is carried out.For convenience of description, by colorful light-emitting figure 3 backwards to underlay substrate 4
One side surface is known as " light-receiving surface ", and colorful light-emitting figure 3 is known as " light-emitting surface " towards a side surface of underlay substrate 4.
Fig. 4 is sent out the light path schematic diagram of light by embedded photoluminescent material 3b, as shown in figure 4, embedded photoluminescent material 3b is received
Oled light sends out the light of particular color of corresponding bright after shining, which part light can directive light-emitting surface, in the light of directive light-emitting surface
Part can be reflected in light-emitting surface, another part can light-emitting surface occur refraction and project.
In the present embodiment, it is assumed that the refractive index of colorful light-emitting figure 3 is n1, is bonded with the light-emitting surface of colorful light-emitting figure 3
Transparent electrode 5 refractive index be n2.For convenience of description, by taking the vertical directive light-emitting surface of light as an example, in light from colored hair
During light figure 3 is incident upon transparent electrode 5, be based on Fresnel reflection formula it is found that
The reflectivity of light-emitting surface is：
The transmissivity of light-emitting surface is：
In the case where the refractive index n2 of transparent electrode 5 is certain, the refractive index n1 of colorful light-emitting figure 3 is bigger, then light extraction
The reflectivity R in face is bigger, and transmissivity T is smaller；Conversely, the refractive index n1 of colorful light-emitting figure 3 is smaller, then the reflectivity of light-emitting surface
R is smaller, and transmissivity T is smaller big.
In the case where embedded photoluminescent material 3b is sent out and the brightness of the light of directive light-emitting surface is certain, the transmissivity of light-emitting surface
T is bigger, then emitting brightness is bigger；Conversely, the transmissivity T of light-emitting surface is smaller, then emitting brightness is smaller.
Through the above as it can be seen that by control colorful light-emitting figure 3 refractive index, can be to the final of respective pixel region
Emitting brightness is adjusted.Based on the principle, colored illuminated diagram in each pixel region can be targetedly adjusted in the present invention
The refractive index of shape 3 shows that the coloration of picture is uneven with improvement and asks to be adjusted to the emitting brightness of each pixel region
Topic.
Specifically, if the luminance of embedded photoluminescent material 3b is lower in colorful light-emitting figure 3 (for example, blue-fluorescence material
Material), then it can control the refractive index of colorful light-emitting figure 3 smaller, the transmitance of light-emitting surface is bigger；If light in colorful light-emitting figure 3
The luminance of electroluminescent material 3b is higher (for example, yellow phosphorescence material or green phosphorescent material), then can control colorful light-emitting figure
The refractive index of shape 3 is bigger, and the transmitance of light-emitting surface is smaller.
Shown in Fig. 3, as a kind of alternative in the present invention, mangneto adjustable refractive index material 3a includes：
Transparent decentralized medium 301 and Transparent Magnetic Materials 302 and refractive index the regulation and control particle being scattered in transparent decentralized medium 301
303；Distribution of the Transparent Magnetic Materials 302 in transparent decentralized medium 301 can change under the control of externally-applied magnetic field, to adjust
The density and refractive index of colorful light-emitting figure 3.
The principle of adjustable refractive index, which is described in detail, to be realized to mangneto adjustable refractive index material 3a below in conjunction with the accompanying drawings.
Fig. 5 is the operation principle schematic diagram of mangneto adjustable refractive index material 3a in the present invention, as shown in figure 5, being provided in transparent electrode 5
Magnetic fields under, Transparent Magnetic Materials 302 occur in transparent decentralized medium 301 assemble or disperse so that transparent point
Dispersion media 301 shrinks or stretches, with the contraction or stretching, extension of transparent decentralized medium 301, mangneto adjustable refractive index material 3a/
The global density of colorful light-emitting figure 3 changes, as mangneto adjustable refractive index material 3a/ colorful light-emittings figure 3 is whole close
The change of degree, 3 overall refractive index of mangneto adjustable refractive index material 3a/ colorful light-emittings figure change.
Specifically, when magnetic field generates suction-operated to Transparent Magnetic Materials 302 (situation shown in Fig. 5), transparent magnetic
Material 302 will be assembled in transparent decentralized medium 301, and transparent decentralized medium 301 is shunk, mangneto adjustable refractive index material
The global density of 3a/ colorful light-emittings figure 3 increases, so that the folding of mangneto adjustable refractive index material 3a/ colorful light-emittings figure 3
Penetrate rate variation；When cancelling magnetic fields or magnetic field and generating repulsive interaction to Transparent Magnetic Materials 302, (such situation does not provide phase
Answer attached drawing), Transparent Magnetic Materials 302 will disperse in transparent decentralized medium 301, so that transparent decentralized medium 301 occurs
The global density of stretching, extension, mangneto adjustable refractive index material 3a/ colorful light-emittings figure 3 increases, so that mangneto adjustable refractive index
The variations in refractive index of material 3a/ colorful light-emittings figure 3.
It should be noted that when Transparent Magnetic Materials 302 are assembled or disperseed under magnetic fields, transparent decentralized medium
301 layers of thickness direction mainly along colorful light-emitting figure 3 is flexible, does not interfere with the length and width of colorful light-emitting figure 3 substantially
Spend the size in direction.
Wherein, refractive index regulation and control particle 303 plays the folding for adjusting mangneto adjustable refractive index material 3a/ colorful light-emittings figure 3
Penetrate the effect of rate.Optionally, refractive index regulation and control particle 303 is nano SiO 2 particle or zirconium dioxide nanoparticles.Dioxy
SiClx nano particle and zirconium dioxide nanoparticles are two distinct types of adjustable refractive index particle；Wherein, when refractive index tune
When control particle 303 is silica, the refractive index of mangneto adjustable refractive index material 3a/ colorful light-emittings figure 3 is with global density
Increase and increases (i.e. the refractive index of the contraction deformation quantity of transparent decentralized medium 301 more big then colorful light-emitting figure 3 is bigger)；Work as folding
Penetrate rate regulation and control particle 303 be zirconium dioxide when, the refractive index of mangneto adjustable refractive index material 3a/ colorful light-emittings figure 3 is with whole
Volume density increase and reduce (i.e. the contraction deformation quantity of the transparent decentralized medium 301 more refractive index of big then colorful light-emitting figure 3 more
It is small).Those skilled in the art are it should also be understood that the refractive index regulation and control particle 303 in the present invention can also be other materials
Nano particle.
In the present embodiment, which further includes：With several the one-to-one driving structures of transparent electrode 5, drive
Dynamic structure is used to generate driving current according to adjusting voltage, and driving current is exported to corresponding transparent electrode 5.Wherein, it adjusts
Section voltage is pre-set voltage corresponding with the refractive index of colorful light-emitting figure 3.Adjust voltage, driving current and colour
There are correspondences by the refractive index three of luminous pattern 3.
In the present invention, corresponding tune when can be by testing to obtain colorful light-emitting figure presentation different refractivity in advance
Voltage is saved, and generates corresponding mapping table.During the refractive index of colorful light-emitting figure is adjusted in reality, according to
The required targeted refractive index of colorful light-emitting figure is tabled look-up, to obtain corresponding adjusting voltage.
Fig. 6 is a kind of vertical view for display base plate that the embodiment of the present invention one provides, as shown in fig. 6, as in the present invention
A kind of concrete scheme, driving structure 7 is the driving circuit that is made of thin film transistor (TFT) and capacitance C.
Specifically, display base plate further includes：Several the first grid line GATE and several the first data line DATA, wherein the
One data line DATA is connect with that can provide the voltage output chip (not shown) for adjusting voltage.Whole the first grid line GATE and complete
The first data line DATA in portion limits several pixel regions, and whole pixel regions constitute pel array；Each pixel region
In be respectively provided with that there are one colorful light-emitting figure 3, a transparent electrodes 5 corresponding with colorful light-emitting figure 3 and right with transparent electrode 5
The driving structure 7 answered.
Driving structure 7 includes：Switching transistor T1, driving transistor T2 and storage capacitance C；The control of switching transistor T1
First grid line GATE connections of pole and corresponding row, the first pole of switching transistor T1 and the first data line DATA of respective column connect
It connects, the second pole of switching transistor T1 is connect with the control pole of driving transistor T2；The control pole of driving transistor T2 and storage
The first end of capacitance C connects, and the first pole of driving transistor T2 is connect with the first power end, the second pole of driving transistor T2 and
The first end of corresponding transparent electrode 5 connects, and the second end of transparent electrode 5 is connect with second source end；The second of storage capacitance C
End connect or is grounded with second source end.
It should be noted that the control pole in the present invention specifically refers to the grid of transistor, the first pole and the second pole difference
For the source electrode and drain electrode of transistor.Wherein, the first power end provides the first operating voltage VDD, and second source end provides the second work
Make voltage VSS.
In the present invention, when switching transistor T1 is opened, the adjusting voltage in the first data line DATA is brilliant by switching
Body pipe T1 is written to the control pole of driving transistor T2, and driving transistor T2 can be defeated according to the adjusting voltage that its control pole receives
Go out driving current of corresponding size, so that corresponding transparent electrode 5 generates corresponding magnetic field；Wherein, transparent electrode 5 receives
Driving current is bigger, around the magnetic field that generates it is stronger.
Therefore, driving current can be controlled by adjusting voltage in the present invention, which can be to transparent electricity
The magnetic field that pole 5 generates is controlled, which can enter control to the refractive index of colorful light-emitting figure 3, to realize to colour
The transmissivity of the light-emitting surface of luminous pattern 3 is controlled, and then is finally realized to the pixel region corresponding to the colorful light-emitting figure 3
The luminous intensity that goes out in domain is controlled.
It should be noted that the driving structure in the present invention is not limited to above-mentioned include two transistors and a capacitance C
Situation, the driving structure can also be the driving current output circuit with other circuit structures either with electric current output work
The driving chip of energy.
In addition, technical scheme of the present invention is also not construed as limiting the shape of transparent electrode 5, transparent electrode 5 can be plate,
Any shapes such as strip, pectination.
Still optionally further, which further includes：Shading graph 6, shading graph 6 covers not to be arranged on display base plate
There are the region of the colorful light-emitting figure 3, i.e. shading graph 6 that can cover the first grid line GATE, the first data line DATA and driving
Region corresponding to structure 7.
Fig. 7 is a kind of schematic cross-section of display base plate provided by Embodiment 2 of the present invention, as shown in fig. 7, with above-mentioned reality
Unlike applying in example one, the transparent electrode 5 in the present embodiment is located at colorful light-emitting figure 3 towards the side of underlay substrate 4, this
When colorful light-emitting figure 3 light-emitting surface be bonded with the surface of underlay substrate 4, light is incident upon substrate base from colorful light-emitting figure 3
Transmissivity when plate 4, related to the refractive index of the refractive index of colorful light-emitting figure 3 and underlay substrate 4, penetrating prescribed electrode 5 can be right
The refractive index of colorful light-emitting figure 3 is adjusted, to realize the adjustment to the emitting brightness in respective pixel region.
Certainly, transparent dielectric layer, such situation also may be present between underlay substrate 4 and the light-emitting surface of colorful light-emitting figure 3
Also belong to protection scope of the present invention.
The embodiment of the present invention one and embodiment two are each provided with a kind of display base plate, which can be to each colorful light-emitting
The light-emitting surface of figure goes out that luminous intensity is independent to be controlled, and promotes the uniformity of chromaticity of picture shown by display panel, with solution
The certainly colour cast problem caused by colorful light-emitting figure degree of aging unevenness.
The embodiment of the present invention three provides a kind of display panel, the display panel include array substrate and with array substrate pair
The display base plate of box, the display base plate is using the display base plate in above-described embodiment one or embodiment two.
Several the second grid lines and several the second data lines, the second grid line and the second data line are provided in array substrate
Several pixel regions are limited, OLED and corresponding pixel-driving circuit, pixel driver electricity are provided in each pixel region
Road is used to provide driving current to OLED, to drive OLED to shine.
It should be noted that when being provided with the first grid line, the first data line and driving structure on display base plate, the first grid
Line can be oppositely arranged with the second grid line, and the first data line can be oppositely arranged with the second data line, and driving structure can be with pixel driver
Circuit is oppositely arranged, and shading graph can cover the second grid line, the second data line and pixel region circuit at this time.
Fig. 8 is a kind of preparation method flow chart for display base plate that the embodiment of the present invention four provides, and is used to prepare above-mentioned reality
The display base plate in example one and embodiment two is applied, which includes：
Step S101, magnetic field is formed on underlay substrate, and layer occurs.
Step S102, colored hair photosphere is formed on underlay substrate.
Wherein, colored hair photosphere includes：Several colorful light-emitting figures, the material of colorful light-emitting figure include：Mangneto is rolled over
Penetrate the embedded photoluminescent material that rate adjusts material and is scattered in mangneto adjustable refractive index material；Layer occurs for magnetic field：With colour
Several one-to-one transparent electrodes of luminous pattern, transparent electrode is oppositely arranged with corresponding institute's colorful light-emitting figure, transparent
Electrode is used to generate corresponding magnetic field according to the driving current received, to adjust the refractive index of corresponding colorful light-emitting figure.
In step s 102, mangneto adjustable refractive index material includes：It transparent decentralized medium and is scattered in transparent dispersion and is situated between
Transparent Magnetic Materials and refractive index in matter regulate and control particle；Formed colorful light-emitting figure the step of include：
Step S1021, embedded photoluminescent material, Transparent Magnetic Materials and refractive index regulation and control uniform particle are scattered in transparent point
In dispersion media solution, to obtain mixed solution.
Wherein, transparent decentralized medium can be to be stirred by ultrasonic to be uniformly mixed by materials such as organosilicon, epoxy resin, polyimides
Obtained solution.
Transparent Magnetic Materials can be FeBO3、FeF3、K2CrCl4, EuSe, rare earth glass, Fe304At least one of, it is transparent
Magnetic material is in Nanoparticulate, and a diameter of 1~10nm, the mass percent that Transparent Magnetic Materials account for colorful light-emitting figure is
5%~10%.In practical applications, mass percent of the Transparent Magnetic Materials in colorful light-emitting figure can be adjusted,
It is controlled to adjust sensitivity to the electromagnetism of colorful light-emitting figure.
Refractive index regulate and control particle also be in Nanoparticulate, a diameter of 10~50nm, refractive index regulation and control particle account for colorful light-emitting
The mass percent of figure is that accounting is 20%~60%.In practical applications, can refractive index regulate and control particle in colorful light-emitting
Mass percent in figure is adjusted, to which refractive index and minimum adjustable folding be adjusted to the maximum of colorful light-emitting figure
The rate of penetrating is controlled.
Embedded photoluminescent material can be phosphor material or fluorescent material.
Step S1022, the spin coating mixed solution on underlay substrate, and curing process is carried out to it, to obtain colorful light-emitting
Film.
Step S1023, patterned process is carried out to colorful light-emitting film, to obtain colorful light-emitting figure.
In step S1023, by colorful light-emitting film progress mask exposure, then carrying out wet etching to it, with
Obtain colorful light-emitting figure.
It should be noted that being directed to different types of colorful light-emitting figure, need that above-mentioned steps S1021~step is performed a plurality of times
Rapid S1023 to prepare respectively.
In addition, step S101 can be executed prior to step S102 in the present invention, i.e., transparent electrode be located at colorful light-emitting figure and
Between underlay substrate (shown in Fig. 2)；Alternatively, being executed in step S102 after step S101, i.e., transparent electrode is located at colorful light-emitting
Figure is backwards to the side of underlay substrate (shown in Fig. 7).
It, can also be in step if further include the first grid line, the first data line, driving structure and shading graph in display base plate
Before rapid S101 and step S102, the first grid line, the first number are formed on underlay substrate using existing array (Array) technique
According to line and driving structure, then shading graph is formed in the region of corresponding first grid, the first data line and driving structure.
After display base plate preparation process, display base plate obtained and array substrate obtained in advance are carried out pair
Box is used in combination sealant to seal surrounding, to obtain OLED display panel.Sealant can laterally obstruct the entrance of water, oxygen, avoid organic
Luminescent device is etched.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, in the essence for not departing from the present invention
In the case of refreshing and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of display base plate, which is characterized in that including：Underlay substrate and the colored hair photosphere on the underlay substrate
Layer occurs with magnetic field；
The colored hair photosphere includes：The material of several colorful light-emitting figures, the colorful light-emitting figure includes：Mangneto reflects
The embedded photoluminescent material that rate adjusts material and is scattered in the mangneto adjustable refractive index material；
Layer occurs for the magnetic field：With several one-to-one transparent electrodes of the colorful light-emitting figure, the transparent electricity
Pole is oppositely arranged with corresponding institute's colorful light-emitting figure, and the transparent electrode is used to be generated according to the driving current received corresponding
Magnetic field, to adjust the refractive index of the corresponding colorful light-emitting figure.
2. display base plate according to claim 1, which is characterized in that the mangneto adjustable refractive index material includes：It is transparent
Decentralized medium and the Transparent Magnetic Materials being scattered in the transparent decentralized medium and refractive index regulate and control particle；
Distribution of the Transparent Magnetic Materials in the transparent decentralized medium can change under the control of externally-applied magnetic field, to adjust
Save the density and refractive index of the colorful light-emitting figure.
3. display base plate according to claim 2, which is characterized in that the refractive index regulates and controls particle and includes：Silica
Nano particle or zirconium dioxide nanoparticles.
4. display base plate according to claim 1, which is characterized in that further include：It is one-to-one with the transparent electrode
Several driving structures, the driving structure is used to generate driving current according to adjusting voltage, and the driving current is exported
To the corresponding transparent electrode；
The adjusting voltage is pre-set voltage corresponding with the refractive index of colorful light-emitting figure.
5. display base plate according to claim 4, which is characterized in that the display base plate further includes：Several first grids
Line and several the first data lines, first grid line and first data line limit several pixel regions, whole institutes
It states pixel region and constitutes pel array；
Be respectively provided in each pixel region there are one the colorful light-emitting figure, with the colorful light-emitting figure corresponding one
A transparent electrode and a driving structure corresponding with the transparent electrode；
The driving structure includes：Switching transistor, driving transistor and storage capacitance；
First grid line of the control pole of the switching transistor and corresponding row connects, the first pole of the switching transistor with
First data line of respective column connects, and the second pole of the switching transistor connects with the control pole of the driving transistor
It connects；
The control pole of the driving transistor and the first end of storage capacitance connect, the first pole and first of the driving transistor
Power end connects, and the second pole of the driving transistor is connected with the first end of the corresponding transparent electrode, the transparent electricity
The second end of pole is connect with second source end；
The second end of the storage capacitance connect or is grounded with the second source end.
6. display base plate according to claim 1, which is characterized in that further include：Shading graph, the shading graph covering
The region of the colorful light-emitting figure is not provided on the display base plate.
7. according to any display base plate in claim 1-6, which is characterized in that the transparent electrode is located at the colour
Luminous pattern is backwards to the side of the underlay substrate；
Alternatively, the transparent electrode is located at the colorful light-emitting figure towards the side of the underlay substrate.
8. a kind of display panel, which is characterized in that including：Display base plate as described in any in the claims 1-7.
9. a kind of preparation method of display base plate, which is characterized in that including：
Magnetic field is formed on underlay substrate, layer and colored hair photosphere occurs, wherein the colored hair photosphere includes：Several are colored
The material of luminous pattern, the colorful light-emitting figure includes：Mangneto adjustable refractive index material and it is scattered in the mangneto refractive index
Adjust the embedded photoluminescent material in material；Layer occurs for the magnetic field：It is several correspondingly with the colorful light-emitting figure
A transparent electrode, the transparent electrode are oppositely arranged with corresponding institute's colorful light-emitting figure, and the transparent electrode is used for basis and connects
The driving current received generates corresponding magnetic field, to adjust the refractive index of the corresponding colorful light-emitting figure.
10. the preparation method of display base plate according to claim 9, which is characterized in that the mangneto adjustable refractive index material
Material includes：Transparent decentralized medium and the Transparent Magnetic Materials being scattered in the transparent decentralized medium and refractive index regulate and control grain
Son；
Formed colorful light-emitting figure the step of include：
The embedded photoluminescent material, the Transparent Magnetic Materials and the refractive index regulation and control uniform particle are scattered in described transparent
In dispersion medium solution, to obtain mixed solution；
The mixed solution described in spin coating on the underlay substrate, and curing process is carried out to it, to obtain colorful light-emitting film；
Patterned process is carried out to the colorful light-emitting film, to obtain the colorful light-emitting figure.
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| CN201810353912.5A CN108520890B (en) | 2018-04-19 | 2018-04-19 | Display substrate, preparation method thereof and display panel |
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| CN201810353912.5A CN108520890B (en) | 2018-04-19 | 2018-04-19 | Display substrate, preparation method thereof and display panel |
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| CN108520890B CN108520890B (en) | 2021-01-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459582A (en) * | 2019-08-26 | 2019-11-15 | 合肥京东方卓印科技有限公司 | Display panel and preparation method thereof, drive control method, display device |
| US11960684B2 (en) | 2022-07-20 | 2024-04-16 | Chicony Power Technology Co., Ltd. | Light-emitting touch panel |
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| CN1196828A (en) * | 1996-06-19 | 1998-10-21 | 松下电器产业株式会社 | Photoelectronic material, device using same and method for manufacturing same |
| CN105449067A (en) * | 2015-12-31 | 2016-03-30 | 白德旭 | Graphene LED chip and preparation method thereof |
| KR20170015699A (en) * | 2015-07-30 | 2017-02-09 | 엘지디스플레이 주식회사 | Organic light emitting diode display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196828A (en) * | 1996-06-19 | 1998-10-21 | 松下电器产业株式会社 | Photoelectronic material, device using same and method for manufacturing same |
| KR20170015699A (en) * | 2015-07-30 | 2017-02-09 | 엘지디스플레이 주식회사 | Organic light emitting diode display device |
| CN105449067A (en) * | 2015-12-31 | 2016-03-30 | 白德旭 | Graphene LED chip and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110459582A (en) * | 2019-08-26 | 2019-11-15 | 合肥京东方卓印科技有限公司 | Display panel and preparation method thereof, drive control method, display device |
| US11960684B2 (en) | 2022-07-20 | 2024-04-16 | Chicony Power Technology Co., Ltd. | Light-emitting touch panel |
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| Publication number | Publication date |
|---|---|
| CN108520890B (en) | 2021-01-26 |
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