CN107611274A - Organic electroluminescence display panel and organic light-emitting display device - Google Patents
Organic electroluminescence display panel and organic light-emitting display device Download PDFInfo
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- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 6
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- 229910003402 CdSe-ZnS Inorganic materials 0.000 claims description 3
- 239000005083 Zinc sulfide Substances 0.000 claims description 3
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- Electroluminescent Light Sources (AREA)
Abstract
The application is related to organic electroluminescence display panel and organic light-emitting display device.Organic electroluminescence display panel includes substrate, and substrate includes pixel confining layers, and pixel confining layers make multiple sub-pixels in ceiling substrate, and each sub-pixel includes organic light-emitting units, and organic light-emitting units include organic luminous layer；At least one sub-pixel also includes quantum dot light emitting unit, and quantum dot light emitting unit includes quantum dot light emitting layer, and quantum dot light emitting layer is photic quantum dot light emitting layer；Wherein, in the quantum dot light emitting unit and organic light-emitting units of same sub-pixel, the light excitation quantum point luminescence unit that organic light-emitting units are sent lights, organic light-emitting units and quantum dot light emitting unit go out that light color is identical, and each quantum dot light emitting unit is separately positioned between the organic light-emitting units of two adjacent sub-pixels.In the program, quantum dot light emitting unit can stop hole and electronics transverse direction transition in two adjacent sub-pixels, reduce sub-pixel and occur stealing bright and colour mixture phenomenon.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to an organic light emitting display panel and an organic light emitting display device.
Background
In a conventional OLED (Organic Light-Emitting Diode), in order to meet various performance indexes of a top-emission OLED device, a hole transport layer and an electron transport layer having a microcavity adjusting effect are generally used to adjust optical lengths of Light emitted from sub-pixels of different colors.
According to the light emitting principle of the OLED device, holes in the hole transport layer and electrons in the electron transport layer enter the light emitting layer and are combined with each other, and the light emitting layer is excited to emit light. However, during the movement of the holes and the electrons, the holes and the electrons may enter the light emitting layers of other colors in a lateral direction, which causes a phenomenon of sneak luminance of the sub-pixels and color mixing.
Disclosure of Invention
The application provides an organic light-emitting display panel and an organic light-emitting display device, which can reduce or even avoid the phenomena of sneak brightness and color mixing of sub-pixels.
The application provides an organic light emitting display panel, including:
a substrate including a pixel defining layer defining a plurality of sub-pixels on the substrate, each of the sub-pixels including an organic light emitting unit including an organic light emitting layer;
the at least one sub-pixel further comprises a quantum dot light-emitting unit, the quantum dot light-emitting unit comprises a quantum dot light-emitting layer, and the quantum dot light-emitting layer is a photoinduced quantum dot light-emitting layer; wherein,
in the quantum dot light-emitting unit and the organic light-emitting unit of the same sub-pixel, light emitted by the organic light-emitting unit excites the quantum dot light-emitting unit to emit light, and the light-emitting colors of the organic light-emitting unit and the quantum dot light-emitting unit are the same, and
each quantum dot light-emitting unit is arranged between the organic light-emitting units of the two adjacent sub-pixels.
Optionally, each of the sub-pixels includes at least one quantum dot light emitting unit and at least one organic light emitting unit, and the quantum dot light emitting units and the organic light emitting units are arranged along a first direction.
Optionally, the pixel defining layer includes pixel defining regions located between the plurality of sub-pixels, and a width of the pixel defining region between two adjacent sub-pixels along the first direction is in a range from 5um to 15 um.
Optionally, the organic light emitting unit and the quantum dot light emitting unit in the same sub-pixel have equal widths along the first direction.
Optionally, in the same sub-pixel, the width of the quantum dot light-emitting unit along the first direction is smaller than the width of the organic light-emitting unit along the first direction.
Optionally, each of the sub-pixels includes one of the quantum dot light-emitting units and one of the organic light-emitting units arranged along the first direction.
Optionally, each of the sub-pixels includes two quantum dot light emitting units and one organic light emitting unit;
in the first direction, one of the quantum dot light-emitting units is located on one side of the organic light-emitting unit, and the other quantum dot light-emitting unit is located on the other side of the organic light-emitting unit.
Optionally, the organic light emitting display panel includes a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel emits light of a first color, the second sub-pixel emits light of a second color, and the third sub-pixel emits light of a third color;
the first sub-pixel comprises a first quantum dot light-emitting unit which comprises a first quantum dot light-emitting layer;
the second sub-pixel comprises a second quantum dot light-emitting unit comprising a second quantum dot light-emitting layer;
the third sub-pixel includes a third quantum dot light emitting unit including a third quantum dot light emitting layer.
Optionally, the first color is red, the second color is green, and the third color is blue;
optionally, the quantum dot luminescent material in the first quantum dot luminescent layer is CdZnSe, the quantum dot luminescent material in the second quantum dot luminescent layer is ZnCdS-ZnS, and the quantum dot luminescent material in the third quantum dot luminescent layer is ZnSe-CdSe-ZnS.
Optionally, the quantum dot material in the quantum dot light emitting layer is cadmium sulfide, cadmium telluride, zinc selenide, zinc telluride, or zinc sulfide.
The present application also provides an organic light emitting display device including the organic light emitting display panel described in any one of the above.
The technical scheme provided by the application can achieve the following beneficial effects:
the application provides an organic light-emitting display panel, wherein, at least one sub-pixel includes quantum dot luminescence unit, and quantum dot luminescence unit sets up between two adjacent sub-pixel's organic luminescence unit, so can know, quantum dot luminescence unit can block the hole in two adjacent sub-pixels and electron transverse transition to reduce and even avoid the sub-pixel to appear stealing and brightening and the phenomenon of colour mixture.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a cross-sectional view of a partial structure of an organic light emitting display panel provided in the present application;
fig. 2 is a schematic diagram of an organic light emitting display panel provided in the present application, in which a first sub-pixel and a second sub-pixel respectively include a quantum dot light emitting unit;
fig. 3 is a schematic diagram illustrating an organic light emitting display panel provided in the present application, in which a first sub-pixel and a third sub-pixel respectively include a quantum dot light emitting unit;
fig. 4 is a schematic diagram of an organic light emitting display panel provided in the present application, in which a second sub-pixel and a third sub-pixel respectively include a quantum dot light emitting unit;
fig. 5 is a schematic diagram of an organic light emitting display panel provided in the present application, in which each sub-pixel includes at least one quantum dot light emitting unit;
fig. 6 is a schematic diagram of an organic light emitting display panel provided in the present application, in which each sub-pixel includes a quantum dot light emitting unit and an organic light emitting unit;
fig. 7 is a schematic diagram of an organic light emitting display panel provided in the present application, in which each sub-pixel includes two quantum dot light emitting units and one organic light emitting unit;
fig. 8 is a schematic diagram of an organic light emitting display panel provided by the present application including three sub-pixels;
fig. 9 is a schematic view of an organic light emitting display device provided in the present application.
Reference numerals:
100-organic light emitting display panel;
1-a substrate;
11-a pixel defining layer;
12-a sub-pixel;
12 a-a first sub-pixel;
12 b-a second sub-pixel;
12 c-a third sub-pixel;
121-organic light emitting layer;
122-a quantum dot light emitting layer;
122 a-a first quantum dot light emitting layer;
122 b-a second quantum dot light emitting layer;
122 c-a third quantum dot light emitting layer;
200-organic light emitting display device.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it should also be understood that when an element is referred to as being "on" or "under" another element, it can be directly formed on "or" under "the other element or be indirectly formed on" or "under" the other element through intervening elements.
Referring to fig. 1, fig. 1 illustrates a cross-sectional view of a partial structure of an organic light emitting display panel.
The application provides an organic light emitting display panel 100, including base plate 1, base plate 1 can adopt rigid glass board, also can adopt flexible polyimide film board, and when adopting flexible polyimide film board, organic light emitting display panel 100 is flexible display panel, and flexible display panel can be crooked or folding, and convenience of customers carries.
The substrate 1 comprises a pixel defining layer 11, the pixel defining layer 11 defines a plurality of sub-pixels 12 on the substrate 1, specifically, the pixel defining layer 11 is disposed on the substrate 1 by evaporation or deposition, a portion of the pixel defining layer 11 corresponding to the sub-pixels 12 is removed, a groove is formed at the removed portion, the sub-pixels 12 are disposed in the groove, and the pixel defining layer 11 with practical significance is formed at the non-removed portion, the pixel defining layer 11 is located between two adjacent sub-pixels 12, and the pixel defining layer 11 can be used for blocking light emitted by one sub-pixel 12 from entering the other sub-pixel 12 through a gap at the top of the organic light emitting display panel, so as to reduce the risk of color mixing of the two adjacent sub-pixels 12.
Each sub-pixel 12 includes an organic light emitting unit, which includes an organic light emitting layer 121, and under the driving of an external voltage, holes and electrons are injected into the organic light emitting layer 121 from an anode and a cathode, respectively, and the holes and the electrons meet and recombine in the organic light emitting layer 121, releasing energy, and transferring the energy to molecules of a substance in the organic light emitting layer 121, so that the electrons in the molecules transition from a ground state to an excited state, and because the excited state is unstable, the excited molecules return to the ground state from the excited state, and the radiation transition causes light emission, and the organic light emitting layer 121 may use a fluorescent material, a phosphorescent material, or the like.
In particular, in the present application, at least one sub-pixel 12 further includes a quantum dot light emitting unit including a quantum dot light emitting layer 122. Fig. 1 shows a case where only one sub-pixel 12 includes the quantum dot light emitting layer 122.
The quantum dots are semiconductor crystals with quantum confinement effect in three spatial dimensions, and the quantum dots are semiconductors such as indium phosphide, gallium nitride, cadmium selenide, lead sulfide and the like in composition. The quantum dots are small in size, near the bohr radius of their excitons, which can cause quantum confinement effects. The performance of a quantum dot is determined by its energy level structure, and in the quantum dot, due to the quantum confinement effect, the positions of the energy levels change, for example, the conduction band moves upwards, the valence band moves downwards, the original continuous energy levels become discrete, the changes make the absorption of photons with different energies selective by the quantum dot, and the light emission of the quantum dot is also the result of the recombination of electrons and holes.
The quantum dot light emitting layer 122 is a photo-induced quantum dot light emitting layer, in the process of photoluminescence, when a quantum dot is in a ground state, all electrons are distributed on a valence band, at this time, if a photon comes in and the energy of the photon is just proper, the electron on the valence band absorbs the photon and jumps from the valence band to a conduction band, meanwhile, a hole is generated at the original position on the valence band, at this time, the electron and the hole are mutually attracted by coulomb acting force, so that an electron-hole pair (exciton) appears on the quantum dot, and after the exciton is formed, excited state light emission can be further generated.
For the same sub-pixel 12, the light emission type of the quantum dot light emitting unit included in the sub-pixel 12 is the same as that of the organic light emitting unit, that is, the color of the light emitted by the organic light emitting unit and the color of the light emitted by the quantum dot light emitting unit are the same, for example, the organic light emitting unit and the quantum dot light emitting unit in the same sub-pixel 12 both emit red light or green light, and in this case, the sub-pixel 12 may also be referred to as a red sub-pixel or a green sub-pixel.
After the quantum dot light-emitting unit is arranged, in order to reduce the risk of occurrence of the stealing and the color mixing of each sub-pixel 12, the quantum dot light-emitting unit is arranged between the organic light-emitting units of the two adjacent sub-pixels 12, and after the arrangement, the organic light-emitting layers 121 of the two adjacent sub-pixels 12 can be separated through the quantum dot light-emitting layer 122, so that holes and electrons are blocked from transversely jumping into other sub-pixels 12, and the phenomena of the stealing and the color mixing of the sub-pixels 12 are reduced or even avoided.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating an organic light emitting display panel in which a first sub-pixel and a second sub-pixel include quantum dot light emitting units.
In the embodiment shown in fig. 2, the organic light emitting display panel 100 includes three sub-pixels 12 as an example, but it should be noted that the organic light emitting display panel 100 is not limited to include the three sub-pixels 12, and the number of the sub-pixels 12 may be larger according to the area and the aperture ratio of the organic light emitting display panel 100.
In fig. 2, three sub-pixels 12 are respectively defined as a first sub-pixel 12a, a second sub-pixel 12b and a third sub-pixel 12c, wherein the first sub-pixel 12a and the second sub-pixel 12b respectively include a quantum dot light emitting layer, and two quantum dot light emitting layers are a first quantum dot light emitting layer 122a and a second quantum dot light emitting layer 122b respectively, wherein the first quantum dot light emitting layer 122a is disposed between the organic light emitting layer 121 of the first sub-pixel 12a and the organic light emitting layer 121 of the second sub-pixel 12b, and the second quantum dot light emitting layer 122b is disposed between the organic light emitting layer 121 of the second sub-pixel 12b and the organic light emitting layer 121 of the third sub-pixel 12c, whereby the first quantum dot light emitting layer 122a can block holes and electrons in the first sub-pixel 12a from entering the second sub-pixel 12b in a transverse direction and block holes and electrons in the second sub-pixel 12b from entering the first sub-pixel 12a in a transverse direction, the second quantum dot light emitting layer 122b can block holes and electrons in the second sub-pixel 12b from entering the third sub-pixel 12c along the transverse direction and block holes and electrons in the third sub-pixel 12c from entering the second sub-pixel 12b along the transverse direction, so that the phenomenon of stealing light of the organic light emitting display panel 100 is effectively controlled.
Of course, the sub-pixel 12 including the quantum dot light emitting layer is not limited to the first sub-pixel 12a and the second sub-pixel 12b, but may be the first sub-pixel 12a and the third sub-pixel 12c, or may be the second sub-pixel 12b and the third sub-pixel 12 c.
Referring to fig. 3 and 4, fig. 3 is a schematic diagram illustrating that the first sub-pixel and the third sub-pixel respectively include a quantum dot light emitting unit; fig. 4 shows a schematic diagram in which the second sub-pixel and the third sub-pixel respectively include a quantum dot light emitting unit.
In the embodiment shown in fig. 3, the first quantum dot light emitting layer 122a is disposed between the organic light emitting layer 121 of the first sub-pixel 12a and the organic light emitting layer 121 of the second sub-pixel 12b, the third quantum dot light emitting layer 122c is disposed between the organic light emitting layer 121 of the second sub-pixel 12b and the organic light emitting layer 121 of the third sub-pixel 12c, it can be seen that the first quantum dot light-emitting layer 122a can block holes and electrons in the first sub-pixel 12a from entering the second sub-pixel 12b in the transverse direction and block holes and electrons in the second sub-pixel 12b from entering the first sub-pixel 12a in the transverse direction, the third quantum dot light emitting layer 122c may block holes and electrons in the second sub-pixel 12b from entering the third sub-pixel 12c along the transverse direction and block holes and electrons in the third sub-pixel 12c from entering the second sub-pixel 12b along the transverse direction, so that the phenomenon of stealing light of the organic light emitting display panel 100 is effectively controlled.
In the embodiment shown in fig. 4, the second quantum dot light emitting layer 122b is disposed between the organic light emitting layer of the first sub-pixel 12a and the organic light emitting layer of the second sub-pixel 12b, the third quantum dot light emitting layer 122c is disposed between the organic light emitting layer of the second sub-pixel 12b and the organic light emitting layer of the third sub-pixel 12c, it can be seen that the second quantum dot light-emitting layer 122b can block holes and electrons in the first sub-pixel 12a from entering the second sub-pixel 12b in the transverse direction and block holes and electrons in the second sub-pixel 12b from entering the first sub-pixel 12a in the transverse direction, the third quantum dot light emitting layer 122c may block holes and electrons in the second sub-pixel 12b from entering the third sub-pixel 12c along the transverse direction and block holes and electrons in the third sub-pixel 12c from entering the second sub-pixel 12b along the transverse direction, so that the phenomenon of stealing light of the organic light emitting display panel 100 is effectively controlled.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating each sub-pixel including at least one quantum dot light emitting unit and at least one organic light emitting unit.
Fig. 5 shows a case where the first sub-pixel 12a and the third sub-pixel 12c include two quantum dot light emitting units, respectively, and the second sub-pixel 12b includes one quantum dot light emitting unit. In the embodiment shown in fig. 5, the quantum dot light emitting unit and the organic light emitting unit are arranged along a first direction (X direction in fig. 5), wherein the first direction may be a transverse direction or a longitudinal direction of the organic light emitting display panel 100, but is not limited to the transverse direction or the longitudinal direction.
After each sub-pixel 12 is provided with at least one quantum dot light-emitting unit, the organic light-emitting units in two adjacent sub-pixels 12 can be separated by at least one quantum dot light-emitting unit, and each quantum dot light-emitting unit can be used for blocking holes and electrons in the organic light-emitting unit in one sub-pixel 12 from transversely jumping into the organic light-emitting layers of other sub-pixels 12, so that the risks of sub-pixel stealing and color mixing are further avoided.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating that each sub-pixel includes a quantum dot light-emitting unit and an organic light-emitting unit.
Optionally, a quantum dot light emitting unit and an organic light emitting unit may be respectively disposed in each sub-pixel 12, after such a setting, in each sub-pixel 12, the quantum dot light emitting layers 122 are collectively disposed in a specific region, and the organic light emitting layers 121 are collectively disposed in another specific region, instead of dispersing the organic light emitting layers 121 and the quantum dot light emitting layers 122 in a plurality of regions, so that when the organic light emitting layers 121 and the quantum dot light emitting layers 122 are disposed, the shape and structure of the mask plate may be simplified, the processing process may be improved, and the processing difficulty may be reduced.
Referring to fig. 7, fig. 7 is a schematic diagram illustrating each sub-pixel including two quantum dot light emitting units and one organic light emitting unit.
In another embodiment, each sub-pixel 12 may further include two quantum dot light emitting units and one organic light emitting unit, and in the first direction, one quantum dot light emitting unit is located on one side of the organic light emitting unit, and the other quantum dot light emitting unit is located on the other side of the organic light emitting unit.
In the embodiment shown in fig. 7, the organic light emitting layers 121 of two adjacent sub-pixels 12 are separated by two quantum dot light emitting layers 122, so that the resistance of transverse transition of holes and electrons is larger, and the risk of sneak light and color mixing of each sub-pixel 12 is lower.
As is known from the foregoing, the pixel defining layer 11 forms pixel defining areas at the plurality of sub-pixels 12 in a manner of removing material, and it can also be understood that two adjacent pixel defining areas define an area where one sub-pixel 12 is located, each sub-pixel 12 is correspondingly disposed in one such area, in which the pixel defining area may block light emitted from different sub-pixels, but it is considered that light emitted from each sub-pixel 12 may be incident into other sub-pixels 12 from a slit of the organic light emitting display panel 100, and for this reason, the present application sets the width of the pixel defining area between two adjacent sub-pixels 12 in the first direction to be in the range of 5um to 15um, that is, the distance between two adjacent sub-pixels 12 is increased by increasing the size of the pixel defining area in the first direction, thereby reducing the risk of color mixing of the different colors of light emitted by the sub-pixels 12.
In the region defined by the pixel defining region for disposing the sub-pixel 12, the organic light emitting unit and the quantum dot light emitting unit in the same sub-pixel may be disposed to have the same width in the first direction, which is advantageous in that, for the photoluminescence quantum dot, the quantum dot light emitting unit may absorb the side-direction waste light in the organic light emitting unit to improve the light emitting efficiency, and if the organic light emitting unit and the quantum dot light emitting unit have the same width in the first direction, the organic light emitting unit may provide more waste light to excite the quantum dot light emitting unit to emit light, thereby improving the light emitting efficiency of the quantum dot light emitting unit.
In another embodiment, the quantum dot light emitting unit may be provided in the same sub-pixel 12, and the width of the quantum dot light emitting unit along the first direction is smaller than the width of the organic light emitting unit along the first direction. After setting up like this, the size increase of organic luminescence unit, the energy that is used for arousing the light of quantum dot luminescence unit then correspondingly increases to there is more light energy to be used for arousing that quantum dot luminescence unit is luminous, makes quantum dot luminescence unit's luminous efficacy can further promote.
Referring to fig. 8, fig. 8 is a schematic diagram illustrating an organic light emitting display panel including three sub-pixels.
In the embodiment shown in fig. 8, the organic light emitting display panel 100 includes a first sub-pixel 12a, a second sub-pixel 12b, and a third sub-pixel 12c, wherein the first sub-pixel 12a emits light of a first color, the second sub-pixel 12b emits light of a second color, and the third sub-pixel 12c emits light of a third color; the first subpixel 12a includes a first quantum dot light emitting unit including a first quantum dot light emitting layer 122 a; the second subpixel 12b includes a second quantum dot light emitting unit including a second quantum dot light emitting layer 122 b; the third subpixel 12c includes a third quantum dot light emitting unit including a third quantum dot light emitting layer 122 c. In this scheme, each sub-pixel 12 can emit light of different colors, each sub-pixel 12 includes a quantum dot light emitting layer, and each quantum dot light emitting layer can separate the organic light emitting layers 121 in different sub-pixels 12, thereby ensuring that the light emitted by each sub-pixel 12 does not appear a phenomenon of sneak light and color mixing.
In one embodiment, the first color may be set to red, the second color may be set to green, the third color may be set to blue, and the quantum dot light emitting material in the first quantum dot light emitting layer 122a in the red sub-pixel may be CdZnSe for emitting red light, the quantum dot light emitting material in the second quantum dot light emitting layer 122b in the green sub-pixel may be ZnCdS-ZnS for emitting green light, and the quantum dot light emitting material in the third quantum dot light emitting layer 122c in the blue sub-pixel may be ZnSe-CdSe-ZnS for emitting blue light. The quantum dot material has high luminous efficiency and good biocompatibility, and particularly, for CdSe nano-crystalline grains, the quantum yield at room temperature can reach 100%.
In other embodiments, the same material may be used for the first quantum dot light emitting layer 122a, the second quantum dot light emitting layer 122b, and the third quantum dot light emitting layer 122c, for example, one or more of cadmium sulfide, cadmium telluride, zinc selenide, zinc telluride, and zinc sulfide may be used for the three. When quantum dots of the same material are used, the quantum dots in different quantum dot light-emitting units can be set to different sizes, so that the quantum dots emit light of different colors. And moreover, the quantum dots made of the same material are adopted, so that the process cost can be saved, and the processing steps of frequently replacing the process due to different materials are simplified.
For the three primary color sub-pixels, one arrangement mode is that a red sub-pixel, a green sub-pixel and a blue sub-pixel are sequentially arranged in a first direction, wherein each sub-pixel 12 includes an organic light emitting unit and a quantum dot light emitting unit, and the organic light emitting unit and the quantum dot light emitting unit are sequentially arranged along the first direction.
The second arrangement mode is that red sub-pixels, green sub-pixels and blue sub-pixels are sequentially arranged in the first direction, wherein the red sub-pixels and the blue sub-pixels respectively comprise organic light-emitting units and quantum dot light-emitting units, the organic light-emitting units and the quantum dot light-emitting units are sequentially arranged in the first direction, and the green sub-pixels only comprise the organic light-emitting units.
The third arrangement mode is that red sub-pixels, green sub-pixels and blue sub-pixels are sequentially arranged in the first direction, wherein the green sub-pixels and the blue sub-pixels respectively comprise organic light-emitting units and quantum dot light-emitting units, the organic light-emitting units and the quantum dot light-emitting units are sequentially arranged in the first direction, and the red sub-pixels only comprise the organic light-emitting units.
It should be noted that, in some embodiments, a gap may be left between the organic light emitting unit and the quantum dot light emitting unit, and the gap distance is 1um to 10 um. The interval can avoid the organic light-emitting unit and the quantum dot light-emitting unit from overlapping, and avoid the color cast defect.
It should be noted that, according to different application environments, the first sub-pixel, the second sub-pixel, and the third sub-pixel may also be configured as sub-pixels emitting light of other colors, such as a white sub-pixel, a yellow sub-pixel, and the like.
Referring to fig. 9, fig. 9 shows a schematic diagram of an organic light emitting display device.
The present application also provides an organic light emitting display device 200, and the organic light emitting display device 200 includes the organic light emitting display panel 100 described in any of the above embodiments.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (12)
1. An organic light emitting display panel, comprising:
a substrate including a pixel defining layer defining a plurality of sub-pixels on the substrate, each of the sub-pixels including an organic light emitting unit including an organic light emitting layer;
the at least one sub-pixel further comprises a quantum dot light-emitting unit, the quantum dot light-emitting unit comprises a quantum dot light-emitting layer, and the quantum dot light-emitting layer is a photoinduced quantum dot light-emitting layer; wherein,
in the quantum dot light-emitting unit and the organic light-emitting unit of the same sub-pixel, light emitted by the organic light-emitting unit excites the quantum dot light-emitting unit to emit light, and the light-emitting colors of the organic light-emitting unit and the quantum dot light-emitting unit are the same, and
each quantum dot light-emitting unit is arranged between the organic light-emitting units of the two adjacent sub-pixels.
2. The organic light-emitting display panel according to claim 1, wherein each of the sub-pixels comprises at least one of the quantum dot light-emitting units and at least one of the organic light-emitting units, and the quantum dot light-emitting units and the organic light-emitting units are arranged along a first direction.
3. The panel according to claim 2, wherein the pixel defining layer includes pixel defining regions between the sub-pixels, and a width of the pixel defining region between two adjacent sub-pixels along the first direction is in a range from 5um to 15 um.
4. The organic light-emitting display panel according to claim 2, wherein the organic light-emitting unit and the quantum dot light-emitting unit in the same sub-pixel have equal widths in the first direction.
5. The organic light emitting display panel of claim 2, wherein the width of the qd-light emitting unit along the first direction is smaller than the width of the organic light emitting unit along the first direction in the same sub-pixel.
6. The panel according to any one of claims 2 to 5, wherein each of the sub-pixels includes one of the quantum dot light-emitting units and one of the organic light-emitting units arranged in the first direction.
7. The organic light-emitting display panel according to any one of claims 2 to 5, wherein each of the sub-pixels includes two of the quantum dot light-emitting units and one of the organic light-emitting units;
in the first direction, one of the quantum dot light-emitting units is located on one side of the organic light-emitting unit, and the other quantum dot light-emitting unit is located on the other side of the organic light-emitting unit.
8. The organic light emitting display panel of claim 2, wherein the organic light emitting display panel comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein the first sub-pixel emits light of a first color, the second sub-pixel emits light of a second color, and the third sub-pixel emits light of a third color;
the first sub-pixel comprises a first quantum dot light-emitting unit which comprises a first quantum dot light-emitting layer;
the second sub-pixel comprises a second quantum dot light-emitting unit comprising a second quantum dot light-emitting layer;
the third sub-pixel includes a third quantum dot light emitting unit including a third quantum dot light emitting layer.
9. The organic light-emitting display panel according to claim 8, wherein the first color is red, the second color is green, and the third color is blue.
10. The organic light-emitting display panel according to claim 9, wherein the quantum dot light-emitting material in the first quantum dot light-emitting layer is CdZnSe, the quantum dot light-emitting material in the second quantum dot light-emitting layer is ZnCdS-ZnS, and the quantum dot light-emitting material in the third quantum dot light-emitting layer is ZnSe-CdSe-ZnS.
11. The organic light-emitting display panel of claim 1, wherein the quantum dot material in the quantum dot light-emitting layer is cadmium sulfide, cadmium telluride, zinc selenide, zinc telluride, or zinc sulfide.
12. An organic light emitting display device comprising the organic light emitting display panel according to any one of claims 1 to 11.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710793346.5A CN107611274A (en) | 2017-09-05 | 2017-09-05 | Organic electroluminescence display panel and organic light-emitting display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710793346.5A CN107611274A (en) | 2017-09-05 | 2017-09-05 | Organic electroluminescence display panel and organic light-emitting display device |
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| CN107611274A true CN107611274A (en) | 2018-01-19 |
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| CN201710793346.5A Pending CN107611274A (en) | 2017-09-05 | 2017-09-05 | Organic electroluminescence display panel and organic light-emitting display device |
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| CN110114884A (en) * | 2019-03-27 | 2019-08-09 | 京东方科技集团股份有限公司 | Display base plate, display equipment and the method for manufacturing display base plate |
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Application publication date: 20180119 |