CN107394050B - A kind of OLED display panel, display device and its control method - Google Patents
A kind of OLED display panel, display device and its control method Download PDFInfo
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- CN107394050B CN107394050B CN201710595110.0A CN201710595110A CN107394050B CN 107394050 B CN107394050 B CN 107394050B CN 201710595110 A CN201710595110 A CN 201710595110A CN 107394050 B CN107394050 B CN 107394050B
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H—ELECTRICITY
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Abstract
The embodiment of the present invention provides a kind of OLED display panel, display device and its control method, is related to field of display technology, image display quality can be improved.The OLED display panel, including being set to the OLED element of subpixel area and electroluminescent color-change layer on substrate；The OLED element includes luminous material layer, and the electroluminescent color-change layer is set to the light-emitting surface side close to the OLED display panel of the luminous material layer；Wherein, the electroluminescent color-change layer is used under the control of voltage, is realized by the variation transparent to predetermined color difference grayscale.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of OLED display panels, display device and its control method.
Background technique
It is compared, organic electroluminescent LED with liquid crystal display (Liquid Crystal Display, abbreviation LCD)
(Organic Light-Emitting Diode, abbreviation OLED) display has thin, light, wide viewing angle, actively shines, luminous face
Color is continuously adjustable, fast response time, energy consumption is small, driving voltage is low, luminous efficiency is high and can Flexible Displays the advantages that, by
The very big concern of industrial circle and scientific circles.
However, in actual use, the problems such as due to export license, it may appear that picture color and actually there is deviation,
Image display quality is caused to be deteriorated.
Summary of the invention
The embodiment of the present invention provides a kind of OLED display panel, display device and its control method, and it is aobvious that picture can be improved
Show quality.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, provide a kind of OLED display panel, including be set on substrate the OLED element of subpixel area and
Electroluminescent color-change layer；The OLED element includes luminous material layer, and the electroluminescent color-change layer is set to the luminous material
The light-emitting surface side close to the OLED display panel of the bed of material；Wherein, the electroluminescent color-change layer is used for the control in voltage
Under system, realize by the variation transparent to predetermined color difference grayscale.
Optionally, the electroluminescent color-change layer is located at red subpixel areas；The predetermined color is blue.
Further, the material positioned at the electroluminescent color-change layer of the red subpixel areas includes Prussia
It is blue.
Optionally, the thickness of the electroluminescent color-change layer exists
Optionally, the OLED element further include anode, the sky that is set between the anode and the luminous material layer
Cave implanted layer and hole transmission layer, cathode, the electron injecting layer and electricity being set between the cathode and the luminous material layer
Sub- transport layer；Based on this, the electroluminescent color-change layer be may be disposed between the luminous material layer and the hole injection layer；
And/or the electroluminescent color-change layer may be disposed between the luminous material layer and the electron injecting layer.
Optionally, the substrate is glass or plastics.
Second aspect provides a kind of display device, including OLED display panel described in first aspect, be set to it is described
OLED display panel light emission side and be located at viewing area close to non-display area edge optical sensor and IC；The optical sensor
For acquiring the light issued when OLED display panel shows specific picture；What the IC was used to be acquired according to the optical sensor
Light obtains chromaticity coordinates, and controls the voltage being applied on electroluminescent color-change layer accordingly.
The third aspect provides a kind of control method of display device, comprising: optical sensor acquisition OLED display panel is shown
The light issued when specific picture；The light that IC is acquired according to the optical sensor obtains chromaticity coordinates, and control is applied to accordingly
Voltage on electroluminescent color-change layer.
Optionally, it is located at red subpixel areas in the electroluminescent color-change layer, and predetermined color is the situation of blue
Under, the control method specifically includes: optical sensor acquisition OLED display panel is displayed in white the light issued when picture；IC root
According to the white light light that the optical sensor acquires, chromaticity coordinates is obtained, and the chromaticity coordinates is compared with the first reference color coordinates,
Judge the partially red degree of picture, to control the voltage being applied on the electroluminescent color-change layer, makes the electroluminescent color-change
The blue of certain grayscale is presented in layer；Wherein, first reference color coordinates are that the OLED display panel shows that the white is drawn
Required voltage corresponding theoretical white light chromaticity coordinates when face.
Optionally, it is located at red subpixel areas in the electroluminescent color-change layer, and predetermined color is the situation of blue
Under, the control method specifically includes: optical sensor acquisition OLED display panel is displayed in red the light issued when picture；It is integrated
The feux rouges light that circuit (Integrated circuit, abbreviation IC) is acquired according to the optical sensor obtains chromaticity coordinates, and will
The chromaticity coordinates is compared with the second reference color coordinates, judges the partially red degree of picture, is applied to the electroluminescent with control
Voltage on photochromic layer makes the electroluminescent color-change layer that the blue of certain grayscale be presented；Wherein, second reference color coordinates
Required voltage corresponding theoretical feux rouges chromaticity coordinates when showing the red picture for the OLED display panel.
The embodiment of the present invention provides a kind of OLED display panel, display device and its control method, by luminescent material
Electroluminescent color-change layer is arranged in the light-emitting surface side of the close OLED display panel of layer, and is asked according to improved picture color
The material of electroluminescent color-change layer is rationally arranged in topic, electroluminescent color-change layer can be made to send out grayscale certain under the control of voltage
The light of predetermined color to realize the adjusting for issuing luminous material layer light, and then plays the role of improving picture color, to mention
High image display quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram one of OLED display panel provided by the invention；
Fig. 2 is a kind of schematic diagram two of OLED display panel provided by the invention；
Fig. 3 is a kind of schematic diagram three of OLED display panel provided by the invention；
Fig. 4 is a kind of schematic diagram four of OLED display panel provided by the invention；
Fig. 5 is a kind of schematic diagram five of OLED display panel provided by the invention；
Fig. 6 is a kind of schematic top plan view of display device provided by the invention.
Appended drawing reference:
1-OLED display panel；The viewing area 2-；3- non-display area；10- substrate；20-OLED element；201- anode；202-
Cathode；203- luminous material layer；204- hole transmission layer；205- electron transfer layer；206- hole injection layer；207- electron injection
Layer；30- electroluminescent color-change layer；40- thinner package film layer；50- optical sensor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of OLED display panel 1, as depicted in figs. 1 and 2, including is set on substrate 10 sub
The OLED element 20 and electroluminescent color-change layer 30 of pixel region；OLED element 20 includes luminous material layer 203, and electroluminescent becomes
Chromatograph 30 is set to the light-emitting surface side of the close OLED display panel 1 of luminous material layer 203；Wherein, electroluminescent color-change layer
30 for realizing by the variation transparent to predetermined color difference grayscale under the control of voltage.
It should be noted that first, OLED element 20 further includes anode 201 and cathode 202, and luminous material layer 203 is arranged
Between anode 201 and cathode 202.By the circuit being connect with anode 201 and cathode 202, applied to anode 201 and cathode 202
Making alive injects hole using anode 201, and cathode 202 injects electronics, is formed by electrons and holes in luminous material layer 203
It meets and generates exciton, so that excitation light-emitting material layer 203 shines.
Further, as shown in Figure 3 and Figure 4, OLED element 20 further includes being set to anode 201 and luminous material layer 203
Between hole transmission layer 204, and the electron transfer layer 205 being set between cathode 202 and luminous material layer 203, in order to
It can be improved the efficiency of electrons and holes injection luminous material layer, OLED element 20 can also include being set to anode 201 and sky
Hole injection layer 206 between cave transport layer 204, and the electron injection being set between cathode 202 and electron transfer layer 205
Layer 207.
Second, according to the difference of anode 201,202 material of cathode, OLED element 20 can divide single side light emitting-type and double-side
Type.When the material of one of electrode in anode 201 and cathode 202 is opaque material, OLED element 20 shines for single side
Type；When the material of anode 201 and cathode 202 is transparent material, OLED element 20 is dual-side luminescent type.
With anode 201 close to substrate 10, for cathode 202 is arranged far from substrate 10, when 201 light transmission of anode, cathode 202 is not
When light transmission, the light that OLED element 20 issues is projected from 201 side of anode, and OLED element 20 is bottom light emitting-type (such as Fig. 2 and figure at this time
Shown in 4), light is emitted from 10 side of substrate.Based on this, electroluminescent color-change layer 30 is set to luminous material layer 203 close to substrate
10 side, or it is set to the other side of the opposite OLED element 20 of substrate 10.
With anode 201 close to substrate 10, for cathode 202 is arranged far from substrate 10, when anode 201 is opaque, cathode 202
When light transmission, the light that OLED element 20 issues is projected from 202 side of cathode, and OLED element 20 is top light emitting-type (such as Fig. 1 and figure at this time
Shown in 3), light is emitted from 10 side of separate substrate of OLED element 20.Based on this, electroluminescent color-change layer 30 is set to luminous material
Side of the bed of material 203 far from substrate 10,
When OLED element 20 is dual-side luminescent type, the above-mentioned description to bottom light emitting-type and top light emitting-type can refer to, specifically
Details are not described herein.
It wherein, is the luminescent properties for guaranteeing OLED element 20, the material of anode 201 should select high work function material, cathode
202 material should choose low-work-function material.
Third in the embodiment of the present invention, does not limit the material of electroluminescent color-change layer 30 specifically, in each color
On the basis of OLED element 20 itself issues light in pixel region, need to issue the color of light according to each color sub-pixels region,
It determines that electroluminescent color-change layer 30 sends out the light of what color, that is, determines the predetermined color, and set in corresponding subpixel area
Set the electroluminescent color-change layer 30 of respective material.
Wherein, the material of the electroluminescent color-change layer 30 in different colours sub-pixel can not be identical.Not to electroluminescent
When luminous coloration layer 30 applies voltage, electroluminescent color-change layer 30 should be transparent.
Based on this, when the light color out without the color by electroluminescent color-change layer 30 to adjust OLED element 20,
It only needs not apply voltage to electroluminescent color-change layer 30, keeps its holding transparent.When needing through electroluminescent color-change layer 30
Color come adjust OLED element 20 go out light color, when so as to improve 1 picture quality of OLED display panel, can as needed to
Electroluminescent color-change layer 30 applies different voltage, required to achieve the effect that.
4th, electroluminescent color-change layer 30 is not limited to setting in each subpixel area, can be only arranged at the first color
In pixel region, may also set up in the first color and the second color sub-pixels region, or the first color, the second color and
Third color sub-pixels region is all arranged.Wherein, the first color, the second color and third color three primary colors each other.
5th, voltage can be provided to electroluminescent color-change layer 30 by the way that additional electrode is arranged, it specifically can be according to reality
Situation is designed, and is subject to the normal work for not influencing OLED element 20.
The embodiment of the present invention provides a kind of OLED display panel 1, passes through the close OLED display surface in luminous material layer 203
Electroluminescent color-change layer 30 is arranged in the light-emitting surface side of plate 1, and according to improved picture color problem, is rationally arranged electroluminescent
The material of luminous coloration layer 30, can under the control of voltage, the predetermined color that makes electroluminescent color-change layer 30 send out grayscale certain
Light to realize the adjusting for issuing luminous material layer 203 light, and then plays the role of improving picture color, to improve picture
Show quality.
In view of in OLED display panel 1, light that the OLED element 20 positioned at red, green, blue sub-pixels region issues
Frequency is different, that is, the frequency highest of blue light, the frequency of feux rouges is minimum, and the frequency of green light is placed in the middle, so that the luminous energy of blue light-emitting
The luminous energy of highest, feux rouges is minimum, and green light is placed in the middle, and luminous energy is high, and export license is larger, and luminous energy is low, electricity
Pole loss is smaller, thus, with the lengthening for using the time, it will the picture for causing OLED display panel 1 to show is gradually partially red.
Based on this, optionally, electroluminescent color-change layer 30 is located at red subpixel areas, in the case, is located at red
The electroluminescent color-change layer 30 of subpixel area is under the control of voltage, it can be achieved that by the variation transparent to blue different grayscale.
Wherein, degree that can be partially red according to picture, to control the voltage being applied on electroluminescent color-change layer 30, so that electric
The grayscale for the blue light that photoluminescence photochromic layer 30 issues will not introduce other display problems.
In this way, can be made electroluminescent under the control of voltage by the way that electroluminescent color-change layer 30 is arranged in red subpixel areas
Luminous coloration layer 30 is become the blue with certain grayscale by Transparent color, to the luminous material layer in red subpixel areas
203 feux rouges issued filter, to make up the larger bring of 20 export license of OLED element due to blue subpixel areas
The partially red phenomenon of picture that OLED display panel 1 is shown.
Further alternative, the material positioned at the electroluminescent color-change layer 30 of red subpixel areas includes Prussian blue.
It is Prussian blue to have excellent color with the characteristic of voltage responsive, and its is relatively inexpensive, thus, it is applied to the present invention
Material in embodiment as electroluminescent color-change layer 30 can not will lead to being substantially improved for production 1 cost of OLED display panel.
Optionally, the thickness of electroluminescent color-change layer 30 existsIn this way, being conducive to meet OLED display surface
The market demand that plate 1 is thinned.
Optionally, when OLED element 20 is bottom light emitting-type, electroluminescent color-change layer 30 may be disposed at luminous material layer 203
Between hole injection layer 206.
Specifically, electroluminescent color-change layer 30 may be disposed between luminous material layer 203 and hole transmission layer 204；Alternatively,
Electroluminescent color-change layer 30 may be disposed between hole transmission layer 204 and hole injection layer 206.
When OLED element 20 is top light emitting-type, electroluminescent color-change layer 30 is set to luminous material layer 203 and electronics is infused
Enter between layer 207.
Specifically, electroluminescent color-change layer 30 may be disposed between luminous material layer 203 and electron transfer layer 205；Alternatively,
Electroluminescent color-change layer 30 may be disposed between electron transfer layer 205 and electron injecting layer 207.
When OLED element 20 is dual-side luminescent type, above-mentioned electroluminescent color-change layer 30 can refer to respectively in OLED element 20
For bottom light emitting-type and the setting position when light emitting-type of top, details are not described herein.
By the way that electroluminescent color-change layer 30 to be set between luminous material layer 203 and hole injection layer 206, and/or set
It is placed between luminous material layer 203 and electron injecting layer 207, can have in these in use evaporation process preparation OLED element 20
When machine material layer, while preparation forms electroluminescent color-change layer 30, thus can simplification of flowsheet, reduce cost.
Optionally, substrate 10 is glass or plastics.When substrate 10 is plastics, OLED display panel 1 of the invention is soft
Property OLED display panel 1；When substrate 10 is glass, OLED display panel 1 of the invention is rigid OLED display panel 1.
On the basis of the above, optionally, the also settable thin film transistor (TFT) of each subpixel area, the drain electrode of thin film transistor (TFT)
It is electrically connected with anode 201.Wherein, thin film transistor (TFT) can be amorphous silicon film transistor, polycrystalline SiTFT, oxide
Thin film transistor (TFT), Organic Thin Film Transistors etc..
A specific embodiment is provided below to describe a kind of OLED display panel 1, as shown in Figure 5, comprising:
Substrate 10, the anode 201 for being set in turn in subpixel area on substrate 10, hole injection layer 206, hole transmission layer
204, luminous material layer 203, electron transfer layer 205 and electron injecting layer 207, cathode 202 and thinner package film layer 40.Into one
Step, further include that the electroluminescent being set between luminous material layer 203 and hole transmission layer 204 becomes in red subpixel areas
Chromatograph 30.
Wherein, the material of anode 201 is preferably transparent tin indium oxide (ITO) or transparent carbon nanotube (CNTs).
Specifically thin film first can be deposited using vacuum magnetic-control sputtering method, anode 201 is formed using photoetching, etching technics later.
The phthalocyanine bronze (CuPc) with excellent Hole injection capacity can be used in hole injection layer 206.Vacuum Heat can be used in it
Evaporation coating method is formed.
The 4,4' with excellent cavity transmission ability, 4 "-three (carbazole -9- base) triphenylamines can be used in hole transmission layer 204
(TCTA).It can be used vacuum thermal evaporation method and is formed.
Electroluminescent color-change layer 30 can be used it is Prussian blue, can voltage control under realize by transparent to blue difference
The variation of grayscale.It can be used vacuum thermal evaporation method and is formed.
Luminous material layer 203 is used in red subpixel areas, green subpixel areas and blue subpixel areas respectively
Feux rouges phosphor material, green light phosphor material and blue emitting phosphor material.It can be used vacuum thermal evaporation method and is formed.
The 8-hydroxyquinoline aluminium (Alq3) with excellent electron transmittability can be used in electron transfer layer 205.It can be used
Vacuum thermal evaporation method is formed.
The low-work-function materials such as the lithium fluoride (LiFe) with excellent electron injectability can be used in electron injecting layer 207.
It can be used vacuum thermal evaporation method and is formed.
Low-resistance magnesium alloy (Mg/Al) can be used in cathode 202.It can be used vacuum thermal evaporation method and is formed.
The forming method of thinner package film layer 40 can be, formerly by a kind of liquid monomer rapid evaporation, in vacuum environment
It is condensed upon on substrate 10 in liquid form, and this film is dried, so that OLED element 20 be made to be fully sealed and planarize.It is used
Liquid monomer can be the hydrocarbon solution containing aluminum-based composites.
The embodiment of the present invention also provides a kind of display device, as shown in fig. 6, including above-mentioned OLED display panel 1, setting
In 1 light emission side of OLED display panel and be located at viewing area 2 close to 3 edge of non-display area optical sensor 50 and IC (as figure not
It identifies).
Wherein, optical sensor 50 shows the light issued when specific picture for acquiring OLED display panel 1；IC is used for root
According to the light that optical sensor 50 acquires, chromaticity coordinates is obtained, and controls the voltage being applied on electroluminescent color-change layer 30 accordingly.
Display device of the invention can be the display devices such as mobile phone, tablet computer, laptop, TV.
The embodiment of the present invention acquires OLED display panel 1 by optical sensor 50 and shows the light issued when specific picture,
So that the light that IC is acquired according to optical sensor 50, obtains chromaticity coordinates, to can determine picture color and actual deviation, in turn
Accordingly by the voltage that control is applied on electroluminescent color-change layer 30, luminous material layer 203 in OLED element 20 is issued
Light is adjusted, and to improve picture color, improves image display quality, to improve experience in use, keeps color
It is color consistent.
The embodiment of the present invention also provides a kind of control method of above-mentioned display device, comprising: optical sensor 50 acquires OLED
Display panel 1 shows the light issued when specific picture；The light that IC is acquired according to optical sensor 50, obtains chromaticity coordinates, and according to
This controls the voltage being applied on electroluminescent color-change layer 30.
The control method of the display device of the embodiment of the present invention has technical effect identical with above-mentioned display device,
This is repeated no more.
Optionally, for the luminous energy highest due to blue light, export license is larger and causes OLED display panel 1 aobvious
The picture shown gradually partially red phenomenon, i.e., be located at red subpixel areas in electroluminescent color-change layer 30, and the electroluminescent becomes
For chromatograph 30, it can be achieved that in the case where by transparent to blue different gray scale variations under the control of voltage, the control method is specific
Include:
S10, optical sensor 50 acquire OLED display panel 1 and are displayed in white the light issued when picture.
The white light light that S11, IC are acquired according to optical sensor 50, obtains chromaticity coordinates, and by the chromaticity coordinates and the first benchmark
Chromaticity coordinates is compared, and judges the partially red degree of picture, to control the voltage being applied on electroluminescent color-change layer 30, makes the electricity
The blue of certain grayscale is presented in photoluminescence photochromic layer 30.
Wherein, it is white to be that OLED display panel 1 is displayed in white the corresponding theory of required voltage when picture for the first reference color coordinates
Photochromic coordinate.
Partially red degree and grayscale can have corresponding relationship.Such as partially red degree can be divided into different brackets, each grade pair
Answer the grayscale value of the blue an of range.Alternatively, partially red degree is characterized with specific value, the corresponding blue ash of each numerical value
Rank value.
Chromaticity coordinates can be characterized with Wx and Wy, and the variation degree according to Wx and Wy with respect to the first reference color coordinates can determine whether picture
Whether face is partially red, meanwhile, it can determine whether partially red degree according to the changing value of Wx.
On this basis, it after obtaining the partially red degree of picture, can first be compared with benchmark, be somebody's turn to do if partially red degree is higher than
Benchmark, then control the voltage being applied on the electroluminescent color-change layer.In this way, it may not be necessary in partially red degree very hour,
Apply voltage to electroluminescent color-change layer, to reduce power consumption.
Optionally, for the luminous energy highest due to blue light, export license is larger and causes OLED display panel 1 aobvious
The picture shown gradually partially red phenomenon, i.e., be located at red subpixel areas in electroluminescent color-change layer 30, and the electroluminescent becomes
For chromatograph 30, it can be achieved that in the case where by transparent to blue different gray scale variations under the control of voltage, the control method is specific
Include:
S20, optical sensor 50 acquire OLED display panel 1 and are displayed in red the light issued when picture.
The feux rouges light that S21, IC are acquired according to optical sensor 50, obtains chromaticity coordinates, and by the chromaticity coordinates and the second benchmark
Chromaticity coordinates is compared, and judges the partially red degree of picture, to control the voltage being applied on electroluminescent color-change layer 30, is made electroluminescent
The blue of certain grayscale is presented in luminous coloration layer 30.
Wherein, which is that the OLED display panel 1 shows required voltage pair when the red picture
The theoretical feux rouges chromaticity coordinates answered.
Partially red degree and grayscale can have corresponding relationship.Such as partially red degree can be divided into different brackets, each grade pair
Answer the grayscale value of the blue an of range.Alternatively, partially red degree is characterized with specific value, the corresponding blue ash of each numerical value
Rank value.
Chromaticity coordinates can be characterized with Wx and Wy, and the variation degree according to Wx and Wy with respect to the second reference color coordinates can determine whether picture
Whether face is partially red, meanwhile, it can determine whether partially red degree according to the changing value of Wx and Wy.
On this basis, it after obtaining the partially red degree of picture, can first be compared with benchmark, be somebody's turn to do if partially red degree is higher than
Benchmark, then control the voltage being applied on the electroluminescent color-change layer.In this way, it may not be necessary in partially red degree very hour,
Apply voltage to electroluminescent color-change layer, to reduce power consumption.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (5)
1. a kind of OLED display panel, which is characterized in that including being set on substrate the OLED element of subpixel area and electroluminescent
Luminous coloration layer；The OLED element includes luminous material layer, and the electroluminescent color-change layer is set to the luminous material layer
Close to the OLED display panel light-emitting surface side；
Wherein, the electroluminescent color-change layer is used under the control of voltage, is realized by transparent to predetermined color difference grayscale
Variation；
The electroluminescent color-change layer is located at red subpixel areas；The predetermined color is blue；
Material positioned at the electroluminescent color-change layer of the red subpixel areas includes Prussian blue；
The thickness of the electroluminescent color-change layer exists
The electroluminescent color-change layer is also located at green subpixel areas and blue subpixel areas；The electroluminescent color-change layer
Material include Prussian blue；
It acquires the OLED display panel and shows the light issued when specific picture, chromaticity coordinates is obtained according to the light of acquisition, and
The voltage being applied on the electroluminescent color-change layer is controlled accordingly.
2. OLED display panel according to claim 1, which is characterized in that the OLED element further includes anode, setting
Hole injection layer and hole transmission layer, cathode between the anode and the luminous material layer, be set to the cathode with
Electron injecting layer and electron transfer layer between the luminous material layer；
The electroluminescent color-change layer is set between the luminous material layer and the hole injection layer；And/or it is described electroluminescent
Luminous coloration layer is set between the luminous material layer and the electron injecting layer.
3. OLED display panel according to claim 1, which is characterized in that the substrate is glass or plastics.
4. a kind of display device, which is characterized in that including the described in any item OLED display panels of claim 1-3, be set to
The OLED display panel light emission side and be located at viewing area close to non-display area edge optical sensor and IC；
The optical sensor shows the light issued when specific picture for acquiring OLED display panel；
The IC is used for the light acquired according to the optical sensor, obtains chromaticity coordinates, and control is applied to electroluminescent accordingly
Voltage on photochromic layer.
5. a kind of control method of display device as claimed in claim 4 characterized by comprising
Optical sensor acquisition OLED display panel shows the light issued when specific picture；
The light that IC is acquired according to the optical sensor obtains chromaticity coordinates, and control is applied on electroluminescent color-change layer accordingly
Voltage；
In the case where the electroluminescent color-change layer is located at red subpixel areas and predetermined color for blue, the control
Method specifically includes:
Optical sensor acquisition OLED display panel is displayed in white the light issued when picture；IC is acquired according to the optical sensor
White light light obtains chromaticity coordinates, and the chromaticity coordinates is compared with the first reference color coordinates, judges the partially red degree of picture,
To control the voltage being applied on the electroluminescent color-change layer, make the electroluminescent color-change layer that the indigo plant of certain grayscale be presented
Color；Wherein, first reference color coordinates are that the OLED display panel shows that required voltage is corresponding when the white picture
Theoretical white light chromaticity coordinates；Alternatively, optical sensor acquisition OLED display panel is displayed in red the light issued when picture；IC is according to institute
The feux rouges light for stating optical sensor acquisition, obtains chromaticity coordinates, and the chromaticity coordinates is compared with the second reference color coordinates, judges
The partially red degree of picture makes the electroluminescent color-change layer be in control the voltage that is applied on the electroluminescent color-change layer
The now blue of certain grayscale；Wherein, when second reference color coordinates are that the OLED display panel shows the red picture
The corresponding theoretical feux rouges chromaticity coordinates of required voltage.
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