CN110752238B - Display panel and display device - Google Patents
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- 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
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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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
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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Abstract
The invention provides a display panel and a display device, relates to the technical field of display, and aims to solve the problem of large-viewing-angle color cast of the display panel. The display panel comprises a color filter electrode and a black matrix which are arranged in the same layer and are not overlapped, wherein the color filter electrode is used for conducting electricity and transmitting light rays with preset colors. The pixel defining layer is positioned at one side of the color filter electrode. The pixel defining layer includes a plurality of open regions and non-open regions. The orthographic projection of the opening area on the plane of the display panel is positioned in the orthographic projection of the color filter electrode on the plane of the display panel. The orthographic projection of the non-opening area on the plane of the display panel covers the orthographic projection of the black matrix on the plane of the display panel. The light emitting layer and the pixel defining layer are located on the same side of the color filter electrode, and the light emitting layer is located at the opening area. The first electrode is located on a side of the light emitting layer away from the color filter electrode.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel and a display device.
[ background of the invention ]
Organic Light-Emitting Diode (OLED) display panels are widely used in the display technology field due to their advantages of being Light and thin, Emitting Light actively, and having high contrast. However, when the current OLED display panel displays, the display effect changes with the change of the viewing angle, and especially when the OLED display panel is viewed under a large viewing angle, the display panel has a more obvious color shift phenomenon, which affects the display effect.
[ summary of the invention ]
In view of the above, embodiments of the present invention provide a display panel and a display device, so as to improve the problem of color shift of the display panel with a large viewing angle.
In one aspect, an embodiment of the present invention provides a display panel, including:
the color filter electrode and the black matrix are arranged on the same layer, the color filter electrode and the black matrix are not overlapped, and the color filter electrode is used for conducting electricity and transmitting light rays with preset colors;
a pixel defining layer positioned at one side of the color filter electrode; the pixel definition layer includes a plurality of open regions and non-open regions; the orthographic projection of the opening area on the plane of the display panel is positioned in the orthographic projection of the color filter electrode on the plane of the display panel; the orthographic projection of the non-opening area on the plane of the display panel covers the orthographic projection of the black matrix on the plane of the display panel;
a light emitting layer, the light emitting layer and the pixel defining layer being located at the same side of the color filter electrode, and the light emitting layer being located at the opening area;
and the first electrode is positioned on one side of the light-emitting layer far away from the color filter electrode.
In another aspect, an embodiment of the present invention provides a display device, including the display panel described above.
According to the display panel and the display device provided by the embodiment of the invention, the color filter electrode which is used for conducting electricity and transmitting the light with the preset color is arranged in the display panel, so that the two functions of driving the light-emitting layer to emit light and filtering the light emitted by the light-emitting layer can be realized by one electrode, two structures do not need to be arranged in the display panel respectively to realize the two functions, and the thickness of the display panel can be reduced. Compared with the scheme that the optical filter and the electrode for filtering light are respectively arranged in the display panel, the scheme of the embodiment of the invention can reduce the distance between the luminous layer and the optical filter, so that the optical path of the light emitted by the luminous layer and transmitted to the color filter electrode is relatively small when the display panel is observed at a large visual angle, the visual angle of the display panel can be improved, and the problem of color cast at the large visual angle can be solved.
In addition, in the embodiment of the invention, the color filter electrodes and the black matrix are arranged in the same layer, so that the black matrix separates two adjacent color filter electrodes, the black matrix can absorb light transmitted between the two adjacent color filter electrodes, and the crosstalk phenomenon between light emitted by the two adjacent color filter electrodes is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a display panel of the prior art;
fig. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
fig. 3 is a schematic perspective view of a color filter electrode according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view along BB' of FIG. 3;
FIG. 5 is a schematic perspective view of another color filter electrode according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view taken along line CC' of FIG. 5;
FIG. 7 is a schematic cross-sectional view of the dimming film layer of FIG. 5 along line CC';
FIG. 8 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
fig. 9 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
fig. 10 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
fig. 11 is a schematic diagram of a display device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe various electrodes in embodiments of the invention, these electrodes should not be limited by these terms. These terms are only used to distinguish the individual electrodes from each other. For example, a first electrode may also be referred to as a second electrode, and similarly, a second electrode may also be referred to as a first electrode, without departing from the scope of embodiments of the present invention.
Fig. 1 is a schematic cross-sectional view of a display panel in the prior art, wherein a color filter is usually added to an OLED device to improve the color purity of the emitted light. However, the inventor found in the research process that, as shown in fig. 1, the current bottom emission type device is generally formed by fabricating an OLED device 2 ' and a color filter 3 ' on both sides of a substrate 1 ', respectively. The OLED device 2 'includes, among other things, an anode 21', a light-emitting layer 20 ', and a cathode 22' arranged in a stack. Since the distance between the color filter 3 ' and the light-emitting layer 20 ' is relatively long, the light emitted from the light-emitting layer 20 ' has a relatively long optical path in the process of being emitted to the color filter 3 ', thereby causing a color shift phenomenon of the display panel under a large viewing angle (for example, when the display panel is viewed along the first direction x ' shown in fig. 1) to be relatively serious.
In view of the above, an embodiment of the invention provides a display panel, as shown in fig. 2, fig. 2 is a schematic cross-sectional view of a display panel provided in an embodiment of the invention, and the display panel includes a color filter electrode 1, a black matrix 2, a pixel defining layer 3, a light emitting layer 4 and a first electrode 51. The color filter electrode 1 is used for conducting electricity and transmitting light of a preset color.
As shown in fig. 2, the color filter electrode 1 and the black matrix 2 are disposed at the same layer on one side of the substrate 01, and do not overlap. The pixel defining layer 3 is located on the side of the color filter electrode 1 away from the substrate 01. The pixel defining layer 3 includes a plurality of open areas 31 and non-open areas 32. The orthographic projection of the opening area 31 on the plane of the display panel is located within the orthographic projection of the color filter electrode 1 on the plane of the display panel. The orthographic projection of the non-opening area 32 on the plane of the display panel covers the orthographic projection of the black matrix 2 on the plane of the display panel. The light-emitting layer 4 is located at the opening area 31. The light-emitting layer 4 and the pixel defining layer 3 are located on the same side of the color filter electrode 1. The first electrode 51 is located on the side of the light-emitting layer 4 remote from the color filter electrode 1.
When the display panel performs display, an electric signal is supplied to the first electrode 51 and the color filter electrode 1, and carriers in the first electrode 51 and the color filter electrode 1 are injected into the light emitting layer 4 by a voltage difference between the first electrode 51 and the color filter electrode 1, and the carriers injected into the light emitting layer 4 are recombined in the light emitting layer 4 to generate excitons, and the excitons are shifted from an excited state to a ground state to radiate energy to emit light. In the embodiment of the present invention, the color filter electrode 1 has a function of filtering light in addition to being conductive. Therefore, the embodiment of the invention can display the required color after the light emitted by the light-emitting layer 4 passes through the color filter electrode 1 by selecting the material of the color filter electrode 1.
As can be seen from the above description of the working process of the display panel, the color filter electrode 1 for conducting electricity and transmitting light of a predetermined color is disposed in the display panel, so that two functions of driving the light emitting layer 4 to emit light and filtering the light emitted by the light emitting layer 4 can be realized by one electrode, and thus two structures do not need to be disposed in the display panel to realize the two functions, and the thickness of the display panel can be reduced. Compared with the scheme of respectively arranging the optical filter and the electrode for filtering light in the display panel, the scheme of the embodiment of the invention can reduce the distance between the light-emitting layer 4 and the optical filter, so that the optical path of light emitted by the light-emitting layer 4 to the color filter electrode 1 is relatively small when the display panel is observed along the direction A shown in figure 1 at a large visual angle, thereby improving the visual angle of the display panel and solving the problem of color cast at the large visual angle.
In addition, in the embodiment of the present invention, the color filter electrodes 1 and the black matrix 2 are disposed in the same layer, and the black matrix 2 separates the two adjacent color filter electrodes 1, so that the black matrix 2 can absorb light transmitted between the two adjacent color filter electrodes 1, thereby improving a crosstalk phenomenon between light emitted through the two adjacent color filter electrodes 1.
Illustratively, the light-emitting layer 4 may include light-emitting layers that emit light of a plurality of different colors, so that the display panel can realize full-color display. In the embodiment of the invention, the color purity of the emergent light is improved by making the corresponding colors of the light-emitting layer 4 and the color filter electrode 1 which are overlapped with each other the same. For example, the light-emitting layer 4 may be made of a light-emitting material capable of emitting light of three colors, i.e., red, green, and blue, and accordingly, the color filter electrode corresponding to the red light-emitting layer may be a color filter electrode capable of transmitting red light, the color filter electrode corresponding to the green light-emitting layer may be a color filter electrode capable of transmitting green light, and the color filter electrode corresponding to the blue light-emitting layer may be a color filter electrode capable of transmitting blue light.
Alternatively, in the embodiment of the present invention, the light emitting layer 4 may also be provided as a white light emitting layer capable of emitting white light. The material life of a white light emitting layer that emits white light is longer than that of a light emitting material that emits light of red, green, blue, or the like. Therefore, the service life of the display panel can be prolonged by selecting the white light-emitting layer. At this time, in the embodiment of the present invention, different color filter electrodes 1 may be respectively and correspondingly disposed to be capable of transmitting red light, green light, and blue light, so that the display panel realizes full-color display.
Exemplarily, as shown in fig. 2, in the embodiment of the present invention, an area of an orthogonal projection of the light emitting layer 4 on a plane of the display panel is smaller than an area of an orthogonal projection of the color filter electrode 1 on the plane of the display panel. If the area of the orthographic projection of the color filter electrode 1 on the plane of the display panel is set to be smaller than the area of the orthographic projection of the light-emitting layer 4 on the plane of the display panel, part of light emitted from the edge position of the light-emitting layer 4 cannot enter the color filter electrode 1 and is absorbed by the black matrix 2, so that the problem that the edge position of the light-emitting layer 4 is dark occurs. According to the embodiment of the invention, the orthographic projection area of the light-emitting layer 4 on the plane of the display panel is smaller than the orthographic projection area of the color filter electrode 1 on the plane of the display panel, so that the possibility that light emitted from the edge position of the light-emitting layer 4 enters the black matrix 2 can be reduced, light emitted from a plurality of positions including the edge and the middle position of the light-emitting layer 4 can be emitted through the color filter electrode 1, and the uniformity of light emitted from the plurality of positions including the edge and the middle position of the light-emitting layer 4 is improved.
Exemplarily, as shown in fig. 3 and 4, fig. 3 is a schematic perspective view of a color filter electrode according to an embodiment of the present invention, and fig. 4 is a schematic cross-sectional view along BB' of fig. 3, wherein the color filter electrode 1 includes a conductive resin 11 and a pigment 12, and the pigment 12 is wrapped by the conductive resin 11. The light-emitting layer 4 is driven to emit light by supplying a voltage to the conductive resin 11 so that the conductive resin 11 cooperates with the first electrode 51. Illustratively, the conductive resin 11 may include polythiophene, polypyrrole, polyaniline, polyacetylene, polyphenylacetylene, polynaphthalene, and derivatives thereof. Alternatively, in order to ensure the conductivity of the conductive resin 11, the conductivity of the conductive resin 11 may be 0.01S/cm or more.
Alternatively, the conductive resin 11 may have a high light transmittance by selecting a material for forming the conductive resin 11, so that the color filter electrode 1 including the conductive resin 11 and the pigment 12 transmits light having the same color as the pigment 12, thereby achieving a light filtering effect on light emitted from the light emitting layer 4.
Alternatively, as shown in fig. 5 and fig. 6, fig. 5 is a schematic perspective view of another color filter electrode according to an embodiment of the present invention, and fig. 6 is a schematic cross-sectional view taken along CC' of fig. 5, in which the color filter electrode 1 further includes a dimming film layer 13. The pigment 12 may be coated with a dimming film layer 13, and the dimming film layer 13 may be coated with the conductive resin 11. The refractive index of the dimming film layer 13 is different at different voltages. In the embodiment of the present invention, the refractive index of the dimming film layer 13 can be changed by adjusting the voltage applied to the dimming film layer 13. The refractive index of the light control film layer 13 is a refractive index for visible light of the same wavelength. During the emitting process of the light emitted from the light emitting layer 4, the refractive index of the light modulation film layer 13 changes, and the degree of refraction of the light passing through the light modulation film layer 13 also changes. That is, the propagation directions of the emitted light of the visible light of the same wavelength passing through the light control film layer 13 having different refractive indexes are different. Since the optical path difference of the emergent light with different propagation directions between the light-emitting layer 4 and the color filter electrode 1 is also different, for the OLED device with the microcavity resonance effect, the phase difference of the constructive interference of the light is constant, and therefore, when the phase difference is constant and the optical path difference is changed, the wavelength of the constructive interference is also changed correspondingly. Therefore, the embodiment of the invention can change the wavelength of the light of the OLED device, which generates constructive interference, by adjusting the refractive index of the dimming film layer 13, thereby realizing adjustment of the color of the emitted light, and achieving the effect of improving the color purity of the emitted light of the OLED device.
Illustratively, as shown in fig. 7, fig. 7 is a schematic cross-sectional view of the dimming film layer CC' in fig. 5, wherein the dimming film layer 13 includes a polymer substrate 131 and liquid crystal droplets 132 dispersed in the polymer substrate 131. The liquid crystal droplets 132 may include a plurality of liquid crystal molecules therein. When no voltage is applied to the liquid crystal droplets 132, the liquid crystal molecules constituting the liquid crystal droplets 132 are in a free orientation. When a voltage is applied to the liquid crystal droplets 132, the liquid crystal molecules constituting the liquid crystal droplets 132 are turned around, and the refractive index of the light control film layer 13 can be changed.
Optionally, when the dimming film layer 13 is formed, a prepolymer of a polymer substrate and a liquid crystal may be mixed in proportion, and then the prepolymer is polymerized and cured by using an ultraviolet or high-temperature annealing method, in the curing process, along with the increase of the molecular weight of the polymer forming the polymer substrate, the solubility of the liquid crystal in the polymer substrate is continuously reduced, and finally, the liquid crystal droplets formed by phase separation are dispersed in the polymer substrate. In the process, the size of the liquid crystal droplets can be adjusted by adjusting the curing temperature and the mixing ratio of the prepolymer and the liquid crystal. Illustratively, the polymer substrate 131 may be formed by using one or more of epoxy resin, polyacrylate or polymethacrylate, so that the prepared polymer substrate 131 has better compatibility with the liquid crystal droplets 132.
Illustratively, the diameter d1 of the liquid crystal droplet satisfies 2 μm. ltoreq. d 1. ltoreq.50 μm, so that the liquid crystal droplet has better dispersibility in the polymer substrate.
Alternatively, the pigment may be selected from color conversion materials. In the embodiment of the present invention, the light emitting color of the light emitting layer may be a first color, and the pigment may emit a second color different from the first color by excitation of the first color light by selecting a suitable color conversion material as the pigment. For example, the first color may be blue, the second color green, and the third color red.
Illustratively, the above-described OLED device including the first electrode 51, the light emitting layer 4, and the color filter electrode 1 may be a bottom emission type device. In forming a bottom emission type device, the first electrode 51 may be made a reflective electrode and the color filter electrode 1 may be made a transmissive electrode. When the OLED device emits light, the light emitted from the light emitting layer 4 is reflected by the first electrode 51 and transmitted out of the display panel through the color filter electrode 1. According to the embodiment of the invention, the color filter electrode 1 with both conductivity and filtering characteristics is selected, so that the distance between the light-emitting layer 4 and the optical filter can be reduced, the visual angle of the display panel can be improved, and the color cast problem under a large visual angle can be improved.
In the preparation of the color filter electrode 1 as a transmissive electrode, a material having a good light transmittance may be selected to form the conductive resin 11 therein. The first electrode 51, which is a reflective electrode, may be formed of one selected from Al, Ag, Ni, Pd, Pt, and alloys thereof having high reflectance characteristics.
Alternatively, the OLED device including the first electrode 51, the light emitting layer 4 and the color filter electrode 1 may be formed as a top emission type device according to an embodiment of the present invention. As shown in fig. 8, fig. 8 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, where the display panel further includes a second electrode 52, and the second electrode 52 is located on a side of the color filter electrode 1 away from the light-emitting layer 4. For example, the first electrode 51 may be a transflective electrode. The second electrode 52 may be a reflective electrode, so that a microcavity structure is formed between the first electrode 51 and the second electrode 52, the emission rate at the resonant wavelength is increased, the emission rate at the non-resonant wavelength is suppressed, the emission spectrum is narrowed, the brightness and the light emitting efficiency of the OLED device are improved, and the color purity of the light emitted by the OLED device is improved. In addition, in the embodiment of the present invention, the color filter electrode 1 is disposed between the first electrode 51 and the second electrode 52, and the color purity of the top emission type device can be improved by utilizing the filtering of the color filter electrode 1 and the enhancement of the microcavity resonance effect, so that the problem of large viewing angle color shift of the display panel can be solved.
Exemplarily, as shown in fig. 9, fig. 9 is a schematic cross-sectional view of another display panel provided in an embodiment of the present invention, where the display panel further includes a planarization layer 6, and the planarization layer 6 is in contact with a surface of the second electrode 52 away from the color filter electrode 1, so as to ensure the flatness of the surface of the formed second electrode 52 and avoid a situation that the second electrode 52 has an increased leakage due to uneven surface. Alternatively, the planarization layer 6 may be formed using an organic layer such as a benzocyclobutene film, a polyimide film, or a polyacrylic film.
Exemplarily, as shown in fig. 10, fig. 10 is a schematic cross-sectional view of another display panel provided in an embodiment of the present invention, wherein a compensation electrode 7 is disposed between the color filter electrode 1 and the light emitting layer 4. For example, the compensation electrode 7 may be formed of a transparent metal Oxide having a high work function, such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).
In general, a light emitting process of an organic light emitting device generally includes processes of injection of carriers, migration of carriers, generation of excitons by recombination of carriers, migration of excitons, and light emission. The injection of carriers refers to the injection of electrons and holes from the cathode and the anode, respectively, into the organic functional layer sandwiched therebetween under the action of an external electric field. Specifically, electrons are injected from the cathode into the Lowest Unoccupied Molecular Orbital (LUMO) of the organic functional layer, and holes are injected from the anode into the Highest Occupied Molecular Orbital (HOMO) of the organic functional layer. The ease of this process has a direct impact on the starting voltage, efficiency and lifetime of the organic light emitting device. According to the embodiment of the invention, the compensation electrode 7 with a higher work function is arranged between the color filter electrode 1 and the light-emitting layer 4, so that the defect of a shallower HOMO of the color filter electrode can be compensated, the potential barrier between the color filter electrode 1 and an organic functional layer (such as a hole injection layer and a hole transport layer) is reduced, the hole injection effect is improved, and the performance of an organic light-emitting device is further improved.
Alternatively, the thickness d2 of the color filter electrode 1 described above satisfies 5nm ≦ d2 ≦ 200nm, and for example, the thickness d2 of the color filter electrode 1 may be set between 50nm and 80 nm.
As shown in fig. 11, fig. 11 is a schematic view of a display device according to an embodiment of the present invention, where the display device includes the display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 11 is only a schematic illustration, and the display device may be any electronic device with a display function, such as an electronic showcase, smart glasses, a vehicle-mounted display screen, a mobile phone, a tablet computer, a notebook computer, an electronic paper book, or a television.
According to the display device provided by the embodiment of the invention, the color filter electrode which is used for conducting electricity and transmitting the light with the preset color is arranged in the display panel, so that two functions of driving the light-emitting layer to emit light and filtering the light emitted by the light-emitting layer can be realized by one electrode, two structures do not need to be arranged in the display panel respectively to realize the two functions, and the thickness of the display panel can be reduced. Compared with the scheme that the optical filter and the electrode for filtering light are respectively arranged in the display panel, the scheme of the embodiment of the invention can reduce the distance between the luminous layer and the optical filter, so that the optical path of the light emitted by the luminous layer and transmitted to the color filter electrode is relatively small when the display panel is observed at a large visual angle, the visual angle of the display panel can be improved, and the problem of color cast at the large visual angle can be solved.
In addition, in the embodiment of the invention, the color filter electrodes and the black matrix are arranged in the same layer, so that the black matrix separates two adjacent color filter electrodes, the black matrix can absorb light transmitted between the two adjacent color filter electrodes, and the crosstalk phenomenon between light emitted by the two adjacent color filter electrodes is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (14)
1. A display panel, comprising:
the color filter electrode and the black matrix are arranged on the same layer, the color filter electrode and the black matrix are not overlapped, and the color filter electrode is used for conducting electricity and transmitting light rays with preset colors;
a pixel defining layer positioned at one side of the color filter electrode; the pixel definition layer includes a plurality of open regions and non-open regions; the orthographic projection of the opening area on the plane of the display panel is positioned in the orthographic projection of the color filter electrode on the plane of the display panel; the orthographic projection of the non-opening area on the plane of the display panel covers the orthographic projection of the black matrix on the plane of the display panel;
a light emitting layer, the light emitting layer and the pixel defining layer being located at the same side of the color filter electrode, and the light emitting layer being located at the opening area;
a first electrode located on a side of the light emitting layer away from the color filter electrode;
the color filter electrode includes a conductive resin and a pigment, the pigment being coated with the conductive resin, the color filter electrode being configured to transmit light having the same color as the pigment;
the color filter electrode further comprises a dimming film layer, the pigment is wrapped by the dimming film layer, and the dimming film layer is wrapped by the conductive resin; the refractive index of the dimming film layer is different under different voltages.
2. The display panel according to claim 1,
the dimming film layer includes a polymer substrate, and liquid crystal droplets dispersed in the polymer substrate.
3. The display panel according to claim 2,
the diameter d1 of the liquid crystal droplet satisfies 2 μm-d 1-50 μm.
4. The display panel according to claim 1,
the light emitting color of the light emitting layer is a first color, and the pigment comprises a color conversion material; the color converting material emits light of a second color upon excitation by light of the first color, the first color being different from the second color.
5. The display panel according to claim 1,
the area of the orthographic projection of the light-emitting layer on the plane of the display panel is smaller than the area of the orthographic projection of the color filter electrode on the plane of the display panel.
6. The display panel according to claim 1,
the first electrode is a reflective electrode and the color filter electrode is a transmissive electrode.
7. The display panel according to claim 1,
the first electrode is a semi-transparent semi-trans electrode;
the display panel further comprises a second electrode, the second electrode is positioned on one side of the color filter electrode, which is far away from the light-emitting layer, and the second electrode is a reflective electrode.
8. The display panel according to claim 7,
the display panel further includes a planarization layer in contact with a surface of the second electrode remote from the color filter electrode.
9. The display panel according to claim 7 or 8,
and a compensation electrode is arranged between the color filter electrode and the light-emitting layer.
10. The display panel according to claim 9,
the compensation electrode includes a transparent metal oxide.
11. The display panel according to claim 1,
the light-emitting layer comprises light-emitting layers which emit light rays of a plurality of different colors;
the colors corresponding to the light emitting layer and the color filter electrode which are overlapped with each other are the same.
12. The display panel according to claim 1,
the light emitting layer includes a white light emitting layer.
13. The display panel according to claim 1,
the thickness d2 of the color filter electrode meets the requirement that d2 is more than or equal to 5nm and less than or equal to 200 nm.
14. A display device characterized by comprising the display panel according to any one of claims 1 to 13.
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| CN112259575B (en) * | 2020-09-24 | 2024-05-31 | 维信诺科技股份有限公司 | Display panel and electronic terminal |
| CN112817477B (en) * | 2021-01-21 | 2024-03-15 | 京东方科技集团股份有限公司 | Touch substrate and display device |
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