CN110518149A - Display device and display panel - Google Patents
Display device and display panel Download PDFInfo
- Publication number
- CN110518149A CN110518149A CN201910818908.6A CN201910818908A CN110518149A CN 110518149 A CN110518149 A CN 110518149A CN 201910818908 A CN201910818908 A CN 201910818908A CN 110518149 A CN110518149 A CN 110518149A
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- layer
- loophole
- drive substrate
- display panel
- luminescent layer
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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
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/856—Arrangements for extracting light from the devices comprising reflective means
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/302—Details of OLEDs of OLED structures
- H10K2102/3023—Direction of light emission
- H10K2102/3035—Edge emission
Abstract
The disclosure is directed to a kind of display device and display panels, are related to field of display technology.The display panel includes drive substrate, luminescent layer, multiple reflector elements and multiple photosensitive units, and luminescent layer is set to drive substrate side, and for shining to the side close to drive substrate, luminescent layer is equipped with multiple loopholes of array distribution.Multiple reflector elements are set to drive substrate, and face is arranged one by one with loophole, and some light that reflector element is used to issue luminescent layer is reflected to loophole.Multiple photosensitive units are set to the side that luminescent layer deviates from drive substrate, and face is arranged one by one with loophole, and photosensitive unit is used to detect the intensity of loophole transmitted light.The uniformity of brightness can be improved in the display panel of the disclosure, improves display effect.
Description
Technical field
This disclosure relates to field of display technology, in particular to a kind of display device and display panel.
Background technique
Currently, aobvious at existing OLED (Organic Light Emitting Diode, organic electroluminescent LED)
Show in panel, in order to solve the problem of Mura i.e. brightness disproportionation, it usually needs brightness is carried out using optical compensation technology
Correction is usually the difference between the intrinsic brilliance and theoretical brightness using detection units test luminescent device, passes through driving
Circuit system is corrected intrinsic brilliance according to the difference, to improve image quality.But it although in the prior art can be to brightness
It is corrected, but needs to keep cathode transparent, this can make display panel there are problems that colour cast, influence display effect.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure aims to overcome that above-mentioned the deficiencies in the prior art, provides a kind of display device and display panel, mentions
The uniformity of high brightness improves display effect.
According to one aspect of the disclosure, a kind of display panel is provided, comprising:
Drive substrate；
Luminescent layer is set to the drive substrate side, described to shine for shining to the side close to the drive substrate
Layer is equipped with multiple loopholes of array distribution；
Multiple reflector elements are set to the drive substrate, and face is arranged one by one with the loophole, the reflector element
Some light for issuing luminescent layer is reflected to the loophole；
Multiple photosensitive units deviate from the side of the drive substrate set on the luminescent layer, and one by one with the loophole
Face setting, the photosensitive unit are used to detect the intensity of the loophole transmitted light.
In a kind of exemplary embodiment of the disclosure, the luminescent layer includes pixel defining layer and by the pixel definition
Multiple luminescence units that layer limits, the luminescence unit include first stacked gradually along the direction away from the drive substrate
Electrode layer, light emitting functional layer and the second electrode lay, the first electrode layer are transparent material, and the second electrode lay is lightproof material
Matter, the second electrode lay extend to the covering pixel defining layer；
The loophole is located at the luminescence unit, and at least runs through the second electrode lay and the light emitting functional layer.
In a kind of exemplary embodiment of the disclosure, the loophole is located at the center of the luminescence unit.
In a kind of exemplary embodiment of the disclosure, the luminescent layer includes pixel defining layer and by the pixel definition
Multiple luminescence units that layer limits, the luminescence unit include first stacked gradually along the direction away from the drive substrate
Electrode layer, light emitting functional layer and the second electrode lay, the first electrode layer are transparent material, and the second electrode lay is lightproof material
Matter, the second electrode lay extend to the covering pixel defining layer；
Space of the loophole between the luminescence unit, and it is fixed through the second electrode lay and the pixel
Adopted layer.
In a kind of exemplary embodiment of the disclosure, it is equipped between two luminescence units of arbitrary neighborhood described
Loophole.
In a kind of exemplary embodiment of the disclosure, the reflector element is metal material that can be reflective.
In a kind of exemplary embodiment of the disclosure, the reflector element is located in the drive substrate.
In a kind of exemplary embodiment of the disclosure, the photosensitive unit that any loophole is located at its face exists
Within orthographic projection on the luminescent layer.
In a kind of exemplary embodiment of the disclosure, the display panel further include:
Encapsulation cover plate deviates from the side of the drive substrate set on the photosensitive unit, and with the drive substrate to box
Setting.
According to one aspect of the disclosure, a kind of display device is provided, including display panel described in above-mentioned any one.
The display device and display panel of the disclosure, luminescent layer can be under the drivings of drive substrate, to close to drive substrate
Side unilateral side shine, i.e., in the form of bottom emitting shine, so as to from drive substrate away from luminescent layer side watch image.Together
When, the light that reflector element can issue luminescent layer reflects, and the light of reflection exposes to the photosensitive unit of face by loophole
On, photosensitive unit can detect the intensity of light, to determine the intrinsic brilliance of luminescent layer, so as to according to intrinsic brilliance and theoretical brightness
The brightness for correcting luminescent layer avoids the problem that brightness disproportionation, improves display effect.Meanwhile it also can avoid because setting cathode to
Transparent configuration and destroy microcavity effect, prevent colour cast problem, guarantee display effect.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram of one embodiment of disclosure display panel.
Fig. 2 is the schematic diagram of another embodiment of disclosure display panel.
Description of symbols:
1, drive substrate；2, luminescent layer；21, pixel defining layer；22, first electrode layer；23, light emitting functional layer；24, second
Electrode layer；3, reflector element；4, photosensitive unit；5, encapsulation cover plate；100, loophole.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.In addition, attached drawing is only the schematic of the disclosure
Diagram, is not necessarily drawn to scale.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures
On, or refer to that certain structure is " direct " and be arranged in other structures, or refer to that certain structure is arranged by the way that another structure is " indirect " in other knots
On structure.
Term "one", " one ", "the", " described " to indicate there are one or more elements/component part/etc.；With
Language " comprising " and " having " is to indicate the open meaning being included and refer to element/composition portion in addition to listing
Also may be present except divide/waiting other element/component part/etc.；Term " first ", " second " only use as label, are not
Quantity limitation to its object.
In the related art, for OLED display panel, in order to make brightness uniformity, it can shine and compensate to it,
Intrinsic brilliance is compared with preset theoretical brightness, determines practical bright by the intrinsic brilliance for usually requiring detection luminescent device
The deviation of degree and preset theoretical brightness, is corrected, to solve Mura according to intrinsic brilliance of the deviation to luminescent device
Problem avoids brightness disproportionation.Specifically, being directed to bottom emitting OLED display panel, it usually needs can be examined in the setting of its backlight side
The sensing device of brightness is surveyed, and needs the thickness that cathode is thinned or makes cathode using translucent material, makes cathode light transmission, such ability
Sensing device is set to receive the light of luminescent device sending, but this can destroy the microcavity effect of luminescent device, to color occur
Partially, display effect is influenced.
Disclosure embodiment provides a kind of display panel, which can be OLED display panel.Such as Fig. 1 and figure
Shown in 2, the display panel of disclosure embodiment includes drive substrate 1, luminescent layer 2, reflector element 3 and photosensitive unit 4,
In:
Luminescent layer 2 is set to 1 side of drive substrate, and for shining to the side close to drive substrate 1, luminescent layer 2 is equipped with battle array
Multiple loopholes 100 of column distribution.
The quantity of reflector element 3 is multiple, and is set to the drive substrate 1, and face is arranged one by one with loophole 100,
The reflector element 3 is for reflecting some light that luminescent layer 2 issues to the loophole 100.
The quantity of photosensitive unit 4 be it is multiple, and be set to luminescent layer 2 deviate from drive substrate 1 side, and with the loophole
100 face settings one by one, photosensitive unit 4 are used to detect the intensity of 100 transmitted light of loophole.
The display panel of disclosure embodiment, luminescent layer 2 can be under the drivings of drive substrate 1, to close to drive substrate 1
Side unilateral side shine, i.e., in the form of bottom emitting shine, so as to from drive substrate 1 away from luminescent layer 2 side watch image.
Meanwhile reflector element 3 can reflect the light that luminescent layer 2 issues, the light of reflection exposes to the sense of face by loophole 100
In light unit 4, photosensitive unit 4 can detect the intensity of light, to determine the intrinsic brilliance of luminescent layer 2, so as to according to intrinsic brilliance
With the brightness of theoretical gamma correction luminescent layer 2, brightness disproportionation is avoided the problem that, improve display effect.Meanwhile it also can avoid destroying
Microcavity effect prevents colour cast problem, guarantees display effect.
Each section of disclosure embodiment display panel is described in detail below:
As depicted in figs. 1 and 2, drive substrate 1 is for driving luminescent layer 2 to shine, may include substrate and array distribution in
Thin film transistor (TFT) on substrate, thin film transistor (TFT) can be bottom gate or top gate structure, may include supporting or opposing by taking top gate structure as an example
Active layer, gate insulation layer, grid, dielectric layer and the source-drain layer that direction from substrate stacks gradually, source-drain layer include passing through via hole
It is connected to the source electrode and drain electrode at active layer both ends.In addition, drive substrate 1 may also include the planarization layer of covering source-drain layer.
As depicted in figs. 1 and 2, luminescent layer 2 can be set to 1 side of drive substrate, such as carry on the back set on the flatness layer of drive substrate 1
Surface from substrate.Luminescent layer 2 can be connect with the thin film transistor (TFT) of drive substrate 1, and can under the driving of drive substrate 1, to
It shines close to the direction unilateral side of drive substrate 1, without shining to the direction away from drive substrate 1.
As shown in Figure 1, in one embodiment, luminescent layer 2 includes that pixel defining layer 21 and multiple luminescence units, pixel are fixed
Adopted layer 21 has multiple pixel regions of array distribution, and each luminescence unit is located at each pixel region correspondingly, to pass through
Pixel defining layer 21 limits the luminescence unit of multiple array distributions in luminescent layer 2, and luminescence unit is sub-pixel.
Further, each luminescence unit can be the OLED light emitting unit of bottom emitting type, specifically, luminescence unit may include
First electrode layer 22 (i.e. anode), light emitting functional layer 23 and the second electrode lay 24 (i.e. cathode), in which:
First electrode layer 22 is set in drive substrate 1, can pass through the mistake across flatness layer with the drain electrode of thin film transistor (TFT)
Hole connection, to receive driving signal.Meanwhile the material of first electrode layer 22 is transparent conductive material, such as ITO (indium oxide
Tin) etc., to guarantee to shine to the direction close to drive substrate 1.
Light emitting functional layer 23 is set to the surface that first electrode layer 22 deviates from drive substrate 1, illustratively, light emitting functional layer 23
May include to away from first electrode layer 22 direction stack gradually hole injection layer, hole transmission layer, organic light emitting material,
Electron transfer layer and electron injecting layer.
The second electrode lay 24 is set to the surface that light emitting functional layer 23 deviates from first electrode layer 22, can be with first electrode layer 22
Collective effect applies voltage to light emitting functional layer 23, light emitting functional layer 23 is made to shine.Meanwhile the second electrode lay 24 is lightproof material
Matter, such as the metal materials such as lighttight aluminium, silver can be used in it, to guarantee light that light emitting functional layer 23 issues only by the first electricity
Pole layer 22 is emitted, without being emitted from the second electrode lay 24 to the direction away from drive substrate 1.
In addition, the second electrode lay 24 may extend to covering pixel defining layer 21, that is to say, that the second electrode lay 24 can be simultaneously
Each light emitting functional layer 23 and pixel defining layer 21 are covered, so that each luminescence unit shares same the second electrode lay 24.
Above-mentioned luminescent layer 2 can also be equipped with loophole 100, and the quantity of loophole 100 is multiple, and array distribution and is shone
On layer 2.In one embodiment, loophole 100 is located at luminescence unit, and at least runs through the second electrode lay 24 and light emitting functional layer
23, so that light emitting functional layer 23 is ring structure.Certainly, loophole 100 can also further run through first electrode layer 22.Loophole
100 shape, the i.e. shape of its cross section can be circle, rectangle etc., not do particular determination herein.In order to reduce to luminescence unit
The influence of light-emitting area, the one third of luminescence unit area where the area of loophole 100 is less than it, 1/5th or more
It is small.In addition, loophole 100 can be located at the center of luminescence unit, i.e. the center of loophole 100 is overlapped with the center of luminescence unit,
Uniformly to receive the light of surrounding, certainly, loophole 100 may also set up the other positions in luminescence unit.
As shown in Fig. 2, in another embodiment, loophole 100 can space between luminescence unit, i.e. luminescent layer
Space in 2 in addition to luminescence unit, and loophole 100 can run through the second electrode lay 24 and pixel defining layer 21, so as to supply
Light passes through, wherein the loophole 100 in present embodiment runs through the position of the second electrode lay 24, is that the second electrode lay 24 is right
The region of light emitting functional layer 23 should be corresponded in the region of pixel defining layer 21.Further, two hairs of arbitrary neighborhood
Loophole 100 is equipped between light unit.
As depicted in figs. 1 and 2, reflector element 3 can be set to drive substrate 1 close to the surface of luminescent layer 2, can also be set to driving
Inside substrate 1.The quantity of reflector element 3 can be identical as loophole 100, and each reflector element 3 can pass through a patterning processes (photoetching
Technique etc.) formed, and with loophole 100 one by one face be arranged, i.e., orthographic projection of each reflector element 3 on luminescent layer 2 with only
One loophole 100 is overlapped.The area of reflector element 3 is not more than the area of loophole 100, makes to avoid to luminescence unit
At blocking.Certainly, the area of reflector element 3 can also be greater than the area of loophole 100 in certain amplitude, such as without departing from light transmission
/ 5th or smaller of 100 area of hole.
Reflector element 3 can luminescent layer 2 issue some light to loophole 100 reflect, to expose to the photosensitive of face
On unit 4.In one embodiment, reflector element 3 can be used can be reflective metal material, and can be set to drive substrate 1 in,
And can be formed with the metal layer in drive substrate 1 by a patterning processes, to simplify technique.For example, reflector element 3
It can be arranged with the grid same layer of drive substrate 1, and be formed by a patterning processes, alternatively, can also be with source-drain layer or other gold
Belong to the setting of film layer same layer.
Certainly, the optical mirror slip of glass material also can be used in reflector element 3, as long as can be reflective to loophole 100, In
This does not do particular determination to the material and structure of reflector element 3.
As depicted in figs. 1 and 2, photosensitive unit 4 can be the optoelectronic inductions devices such as photoelectric sensor, and can be set to luminescent layer 2
Away from the side of drive substrate 1, the quantity of photosensitive unit 4 can be identical as loophole 100, and can be with the face one by one of loophole 100
Setting.Any loophole 100 is located at the photosensitive unit 4 of its face within the orthographic projection on luminescent layer 2, keeps loophole 100 saturating
The light crossed is as much as possible to be irradiated on photosensitive unit 4.Photosensitive unit 4 is used to detect the light that the loophole 100 of face penetrates
The intensity of line.
As shown in Figure 1, be located at the embodiment on luminescence unit for loophole 100, each luminescence unit is to driving base
The some light that plate 1 issues can be reflected, the light of reflection by the reflector element 3 of the loophole 100 corresponded on the luminescence unit
It is exposed to after loophole 100 on the photosensitive unit 4 of face.
As shown in Fig. 2, not limiting a photosensitive unit 4 in disclosure embodiment and shining to a luminescence unit
Intensity is detected, and a photosensitive unit 4 also can detect the anti-of two or more luminescence units for penetrating a loophole 100
Light is penetrated, to adjust the brightness of multiple luminescence units simultaneously.For example, for loophole 100 between luminescence unit
Space embodiment, some light that each luminescence unit is issued to drive substrate 1 can be by adjacent saturating of the luminescence unit
The reflector element 3 of 100 face of unthreaded hole reflects, and the light of reflection is exposed to after loophole 100 on the photosensitive unit 4 of face.
As depicted in figs. 1 and 2, the display panel of disclosure embodiment may also include encapsulation cover plate 5, can be transparent material
Matter, in flexible display panels, encapsulation cover plate 5 can be flexible material.Encapsulation cover plate 5 can be set to photosensitive unit 4 away from driving base
The side of plate 1, and box is arranged with drive substrate 1.Photosensitive unit 4 can be laminated in encapsulation cover plate 5 close to the table of drive substrate 1
Face can also be set in encapsulation cover plate 5, as long as the light of the transmission of loophole 100 can be received.
The display panel of disclosure embodiment may also include compensation circuit, can connect with each photosensitive unit 4, for connecing
The intensity for the light that photosensitive unit 4 detects is received, and intrinsic brilliance, then the intrinsic brilliance and preset reason are determined according to the intensity
Offset is determined by brightness, to the corresponding luminescence unit of photosensitive unit 4 or adjacent luminescence unit for not meeting theoretical brightness
Luminous intensity compensates, thus the problem of adjusting the brightness of display panel, improving brightness disproportionation, concrete principle is no longer detailed herein
It states.
Disclosure embodiment also provides a kind of display device, which may include the display surface of above embodiment
Plate, thus the two can solve identical technical problem, technical effect having the same, details are not described herein.The display device can
Will not enumerate herein for electronic equipments such as mobile phone, tablet computer or Electronic Papers.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
Claims (10)
1. a kind of display panel characterized by comprising
Drive substrate；
Luminescent layer is set to the drive substrate side, described to shine for shining to the side unilateral side close to the drive substrate
Layer is equipped with multiple loopholes of array distribution；
Multiple reflector elements are set to the drive substrate, and face is arranged one by one with the loophole, and the reflector element is used for
The some light that luminescent layer issues is reflected to the loophole；
Multiple photosensitive units, deviate from the side of the drive substrate set on the luminescent layer, and with loophole face one by one
Setting, the photosensitive unit are used to detect the intensity of the loophole transmitted light.
2. display panel according to claim 1, which is characterized in that the luminescent layer includes pixel defining layer and described
Multiple luminescence units that pixel defining layer limits, the luminescence unit include along the direction successively layer away from the drive substrate
Folded first electrode layer, light emitting functional layer and the second electrode lay, the first electrode layer are transparent material, the second electrode lay
For shading material, the second electrode lay extends to the covering pixel defining layer；
The loophole is located at the luminescence unit, and at least runs through the second electrode lay and the light emitting functional layer.
3. display panel according to claim 2, which is characterized in that the loophole is located in the luminescence unit
The heart.
4. display panel according to claim 1, which is characterized in that the luminescent layer includes pixel defining layer and described
Multiple luminescence units that pixel defining layer limits, the luminescence unit include along the direction successively layer away from the drive substrate
Folded first electrode layer, light emitting functional layer and the second electrode lay, the first electrode layer are transparent material, the second electrode lay
For shading material, the second electrode lay extends to the covering pixel defining layer；
Space of the loophole between the luminescence unit, and run through the second electrode lay and the pixel definition
Layer.
5. display panel according to claim 4, which is characterized in that between two luminescence units of arbitrary neighborhood
Equipped with the loophole.
6. display panel according to claim 1, which is characterized in that the reflector element is metal material that can be reflective
Matter.
7. display panel according to claim 1, which is characterized in that the reflector element is located in the drive substrate.
8. display panel according to claim 1, which is characterized in that any loophole is located at the sense of its face
Within the orthographic projection of light unit on the light-emitting layer.
9. display panel according to claim 1-8, which is characterized in that the display panel further include:
Encapsulation cover plate deviates from the side of the drive substrate set on the photosensitive unit, and box is arranged with the drive substrate.
10. a kind of display device, which is characterized in that including the described in any item display panels of claim 1-9.
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