CN118284170A - Display panel and display device - Google Patents

Abstract

The application provides a display panel and a display device. The plurality of driving structures include a first driving structure, and the plurality of light emitting devices include a first light emitting device electrically connected to the first driving structure. The pixel defining layer includes a first pixel opening, and the plurality of filter structures includes a first filter structure, wherein an orthographic projection of the first filter structure on the substrate overlaps an orthographic projection of the first pixel opening on the substrate. The first light filtering structure comprises a first part and a second part, the first part and the second part are arranged along the direction vertical to the surface where the display panel is located, and the first part is positioned at one side of the second part far away from the substrate. Wherein the color of the first portion is the same as the light emitting color of the first light emitting device, and the color of the first portion is different from the color of the second portion. The application is beneficial to reducing the preparation difficulty while weakening the reflection phenomenon.

Description

Display panel and display device

Technical Field

The application relates to the technical field of display, in particular to a display panel and a display device.

Background

Reflection of part of the structure in the display panel to ambient light is an important factor affecting the display effect, and in order to improve the display effect, a scheme of filling a light shielding material in the display panel is generally selected to shield part of the structure in the display panel and reduce the reflection phenomenon. The black light blocking material is a conventional filling light blocking material, however, a scheme of reducing reflection by filling the black light blocking material generally causes the problems of high preparation difficulty and the like, and has certain limitations.

Disclosure of Invention

In view of the above, the present application provides a display panel to solve the above-mentioned problems.

In a first aspect, an embodiment of the present application provides a display panel, including a substrate, a driving structure, a light emitting device, a pixel defining layer, and a light filtering structure. The driving structure is positioned on one side of the substrate base plate, and the driving structure comprises a first driving structure. The light emitting devices are positioned on one side of the driving structure away from the substrate base plate, and the plurality of light emitting devices comprise a first light emitting device. The pixel defining layer includes a pixel opening exposing at least a portion of the driving structure, and an orthographic projection of the pixel opening on the substrate covers an orthographic projection of the light emitting device on the substrate. The plurality of pixel openings comprise a first pixel opening, and the first light emitting device is electrically connected with the first driving structure. The front projection of the filter structure on the substrate overlaps with the front projection of the pixel opening on the substrate. The plurality of filter structures include a first filter structure, and an orthographic projection of the first filter structure on the substrate overlaps an orthographic projection of the first pixel opening on the substrate. The first light filtering structure comprises a first part and a second part, the first part and the second part are arranged along the direction vertical to the surface where the display panel is located, and the first part is positioned at one side of the second part far away from the substrate. Wherein the color of the first portion is the same as the light emitting color of the first light emitting device, and the color of the first portion is different from the color of the second portion.

In one possible implementation, the pixel defining layer includes a black material.

In a possible implementation, the pixel defining layer further includes a light-transmitting opening, and the light-transmitting opening and the driving structure do not overlap in a direction perpendicular to a plane of the display panel.

In one possible implementation, the first projection covers an orthographic projection of the pixel opening on the substrate, the first projection including an orthographic projection of the filter structure on the substrate and an orthographic projection of the light emitting device on the substrate.

In one possible implementation, the second portion is blue or red.

In one possible implementation, the plurality of driving structures includes a second driving structure, the plurality of light emitting devices includes a second light emitting device, the plurality of pixel openings includes a second pixel opening, and the second light emitting device is electrically connected to the second driving structure. The second light emitting device emits light of a different color than the first light emitting device. The plurality of filter structures include a second filter structure, and an orthographic projection of the second filter structure on the substrate overlaps an orthographic projection of the second pixel opening on the substrate. The second light filtering structure comprises a third part and a fourth part, the third part and the fourth part are arranged along the direction vertical to the surface where the display panel is located, and the third part is positioned at one side of the fourth part far away from the substrate. The color of the third part is the same as the light emitting color of the second light emitting device, and the color of the third part is different from the color of the fourth part;

wherein the color of the fourth portion is the same as the color of the second portion.

In one possible implementation, the plurality of driving structures includes a third driving structure, the plurality of light emitting devices includes a third light emitting device, the plurality of pixel openings includes a third pixel opening, and the third light emitting device is electrically connected to the third driving structure. The light-emitting color of the third light-emitting device is different from the light-emitting color of the first light-emitting device and the light-emitting color of the second light-emitting device;

the plurality of light filtering structures comprise a third light filtering structure, the orthographic projection of the third light filtering structure on the substrate is overlapped with the orthographic projection of the third pixel opening on the substrate, and the color of the third light filtering structure is the same as the luminous color of the third luminous device;

the color of the third filtering structure is the same as the color of the second part and the color of the fourth part.

In one possible implementation, the plurality of driving structures includes a redundant driving structure, and the light emitting device is not electrically connected to the redundant driving structure. The pixel defining layer also includes a plurality of redundant openings exposing at least a portion of the redundant drive structure. The plurality of filter structures comprise redundant filter structures, and orthographic projections of the redundant filter structures on the substrate overlap orthographic projections of the redundant openings on the substrate. The color of the redundant light filtering structure corresponding to the redundant opening is the same as the color of at least part of the light filtering structure corresponding to the pixel opening adjacent to the redundant opening.

In one possible implementation, the plurality of driving structures includes a redundant driving structure, and the light emitting device is not electrically connected to the redundant driving structure. The pixel defining layer also includes a plurality of redundant openings exposing at least a portion of the redundant drive structure. The plurality of filter structures comprise redundant filter structures, and orthographic projections of the redundant filter structures on the substrate overlap orthographic projections of the redundant openings on the substrate. Wherein the colors of all the redundant filter structures are the same.

In one possible implementation, the redundant filter structure is blue in color.

In one possible implementation manner, along the direction perpendicular to the plane of the display panel, the forward projection area of the filter structure corresponding to the light emitting device with the light emitting color different from the color of the redundant filter structure is s1, the forward projection area of the filter structure corresponding to the light emitting device with the light emitting color same as the color of the redundant filter structure is s2, and s1 > s2

In a second aspect, an embodiment of the present application provides a display device including the display panel provided in the first aspect.

In the application, the light filtering structure comprising the color resistance material can realize shielding of the light emitting device and the driving structure, and the difficulty of patterning the color resistance material comprising the light filtering structure is relatively low, so that the arrangement mode is beneficial to reducing the preparation difficulty on the premise of weakening the reflection phenomenon. In addition, by arranging the first light filtering structure to overlap the first pixel opening along the direction perpendicular to the plane of the display panel, the first light filtering structure can shield the first driving structure exposed by the first pixel opening, and the light intensity of the ambient light emitted to the part of the first driving structure exposed by the first pixel opening is reduced. Since the color of the first portion is different from the color of the second portion, the first filtering structure has good absorption capability on the ambient light passing through the first filtering structure, which is helpful for further weakening the reflection phenomenon of the ambient light.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view showing a part of a structure of a display panel according to the present application;

FIG. 2 is a schematic cross-sectional view of a portion of a display panel according to the present application;

FIG. 3 is a schematic top view of a portion of the display panel shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view of a portion of a display panel according to the present application;

FIG. 5 is a schematic cross-sectional view of a portion of a display panel according to the present application;

FIG. 6 is a schematic cross-sectional view of a portion of a display panel according to the present application;

FIG. 7 is a schematic cross-sectional view of a portion of a display panel according to the present application;

FIG. 8 is a schematic top view of a portion of the display panel of FIG. 7;

FIG. 9 is a schematic cross-sectional view of a portion of a display panel according to the present application;

Fig. 10 is a schematic cross-sectional view of a portion of a display panel according to the present application;

FIG. 11 is a schematic cross-sectional view of a portion of a display panel according to the present application;

FIG. 12 is a schematic top view of a portion of the display panel of FIG. 11;

Fig. 13 is a schematic diagram of a display device according to the present application.

Detailed Description

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application 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 way of describing an association of associated objects, meaning that there may be three relationships, e.g., a and/or b, which may represent: the first and second cases exist separately, and the first and second cases exist separately. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Fig. 1 is a schematic cross-sectional view showing a part of a structure of a display panel according to the present application.

There are currently various technical solutions to attenuate the reflection of ambient light by the display panel.

For example, a light emitting device in a display panel generally includes a structure that can reflect ambient light, and a scheme of reducing the size of the light emitting device may be adopted to reduce the probability of ambient light propagating to the light emitting device and thus reduce the reflection phenomenon, which is often applied to a display panel including Micro light emitting diodes (Micro-LEDs). However, the above-mentioned schemes for reducing the size of the light emitting device tend to reduce the light emitting efficiency of the light emitting device, resulting in a decrease in display brightness, which is disadvantageous for improvement of the contrast of the picture.

For example, in order to reduce reflection of ambient light, a filter structure may be attached to a light-emitting surface side of the display panel, and a portion of the ambient light may be absorbed by the filter structure during the process of penetrating the filter structure into the display panel. However, the arrangement of the filter structure may reduce the light transmittance of the display panel and reduce the intensity of display light generated by the display panel for display.

The technical scheme commonly used in the prior art comprises: and filling a light shielding material to shield a structure in the display panel, which can reflect ambient light. As shown in fig. 1, the display panel is filled with the light shielding structure M ', and the light shielding structure M' has a good absorption capability to ambient light, and the arrangement manner can make the light intensity of the ambient light transmitted to a part of the surface of the light emitting device L 'and a part of the surface of the conductive structure R' smaller, so as to be beneficial to weakening the reflection phenomenon. Wherein, the light shielding structure M' may include a black material. However, the distance between the surface of the side of the light emitting device L ' away from the conductive structure R ' and the conductive structure R ' tends to be relatively large, and the thickness of the sub-portion Ma around the light emitting device L ' included in the light shielding structure M ' in the direction perpendicular to the plane of the display panel tends to be large. Since the light shielding structure M' may have a good light absorbing ability, the difficulty of preparing the sub-portion Ma in the preparation process is high. The reason is that, at present, the light shielding layer is usually patterned by exposing, developing and etching to obtain the light shielding structure M ', and since the light shielding structure M' has strong light absorption capability, if the thickness of the sub-portion Ma is large, insufficient exposure of the light shielding layer around the light emitting device L 'easily occurs when the light shielding layer is exposed, resulting in low production yield of the light shielding structure M'.

Fig. 2 is a schematic cross-sectional view of a portion of a display panel according to the present application.

In order to solve the above-described problems, the present application provides a display panel 10, as shown in fig. 2, the display panel 10 includes a substrate base B, a driving structure D, and a light emitting device L. The light emitting device L may be one of a micro light emitting diode (micro-LED), a small light emitting diode (min i-LED), and the like. The driving structures D are located on one side of the substrate B, and the plurality of driving structures D include a first driving structure D1. The light emitting devices L are located at a side of the driving structure D away from the substrate B, and the plurality of light emitting devices L include a first light emitting device L1, and the first light emitting device L1 is electrically connected with the first driving structure D1. The driving structure D may include two parts, one of which may be electrically connected to one pole (e.g., anode) of the light emitting device L through the contact structure lamp and the other of which may be electrically connected to the other pole (e.g., cathode) of the light emitting device L through the contact structure lamp. Wherein, a portion of the driving structure D may be electrically connected to one pole of the light emitting device L and the pixel circuit in the display panel 10, and another portion of the driving structure D may be electrically connected to another pole of the light emitting device L and a portion of the signal line in the display panel 10. Accordingly, the light emitting device L may receive a voltage or current required when emitting light through the driving structure D.

Fig. 3 is a schematic top view of a portion of the structure of the display panel shown in fig. 2, and it should be noted that fig. 3 only illustrates an orthographic projection of a portion of the structure of the display panel shown in fig. 2 on a substrate.

Referring to fig. 2 and 3, the display panel 10 further includes a pixel defining layer PDL including a pixel opening OP exposing at least a portion of the driving structure D, and a front projection SO of the pixel opening OP on the substrate B overlaps with a front projection SL of the light emitting device L on the substrate B. The area of the front projection SL of the light emitting device L on the substrate B may be smaller than the area of the front projection SO of the pixel opening OP on the substrate B, and then the portion of the driving structure D may not overlap with any one of the pixel defining layer PDL and the light emitting device L in a direction perpendicular to the plane of the display panel 10. The plurality of pixel openings OP include a first pixel opening OP1, and a front projection SO1 of the first pixel opening OP1 on the substrate B may cover a front projection SL1 of the first light emitting device L1 on the substrate B.

Referring to fig. 2 and 3, the display panel 10 further includes a filter structure CF, and an orthographic projection SC of the filter structure CF on the substrate B overlaps an orthographic projection SO of the pixel opening OP on the substrate B. The filter structure CF may include a color blocking (co l or f i l ter) material for absorbing light, and when the ambient light incident on the display panel 10 propagates into the filter structure CF, the filter structure CF may absorb at least part of the color light included in the ambient light, thereby weakening the intensity of the ambient light.

It should be noted that, in the drawings of the present specification, different filling patterns are used for filling the filter structures CF with different colors, that is, the different filling patterns of the different filter structures CF mean that the colors corresponding to the different filter structures CF are different, and the same filling pattern of the different filter structures CF means that the colors corresponding to the different filter structures CF are the same; in addition, for the partial filter structure CF, the different filling patterns of the different portions included in the same filter structure CF mean that the colors corresponding to the different portions are different, respectively, and the same filling pattern of the different portions included in the same filter structure CF means that the colors corresponding to the different portions are the same, respectively.

The plurality of filter structures CF include a first filter structure CF1, where a front projection SC1 of the first filter structure CF1 on the substrate B overlaps a front projection SO1 of the first pixel opening OP1 on the substrate B. Then, in a direction perpendicular to the plane of the display panel 10, the first filter structure CF1 may overlap with a portion of the first driving structure D1 exposed by the first pixel opening OP 1.

The first filter structure CF1 includes a first portion CF11 and a second portion CF12, the first portion CF11 and the second portion CF12 are arranged along a direction perpendicular to a plane of the display panel 10, and the first portion CF11 is located at a side of the second portion CF12 away from the substrate B. The first portion CF11 and the second portion CF12 may each include a color resist material, and the first portion CF11 may surround at least a portion of the surface of the first light emitting device L1, so that the first portion CF11 may reduce ambient light propagating to a portion of the surface of the first light emitting device L1 and reduce reflection.

Wherein the color of the first portion CF11 is the same as the light emitting color of the first light emitting device L1, and the color of the first portion CF11 is different from the color of the second portion CF 12. Since the first portion CF11 may surround a part of the surface of the first light emitting device L1, if the color of the first portion CF11 is different from the light emitting color of the first light emitting device L1, the absorption capacity of the first portion CF11 for the light generated by the first light emitting device L1 is strong. The above arrangement easily results in a relatively small proportion of the light generated by the first light emitting device L1 that can be emitted out of the display panel 10, relative to the case where the color of the first portion CF11 is the same as the light emitting color of the first light emitting device L1. Accordingly, the color of the first portion CF11 may be set to be the same as the light emission color of the first light emitting device L1, reducing the degree of absorption of the light generated by the first light emitting device L1 by the first portion CF 11. In addition, since the color of the first portion CF11 is different from the color of the second portion CF12, most of the color light included in the ambient light can be absorbed by the first filter structure CF1 during the process of passing through the first portion CF11 and the second portion CF12, and the arrangement is beneficial to reducing the intensity of the ambient light exiting the first filter structure CF1 and reducing the reflection phenomenon. For example, when the color of the first portion CF11 and the color of the second portion CF12 are superimposed to be black, the first filter structure CF1 may completely absorb the ambient light incident thereto.

In addition, since the first portion CF11 and the second portion CF12 are arranged along the direction perpendicular to the plane of the display panel 10, for the small-angle ambient light emitted to the first pixel opening OP1 along the direction with a small included angle with the direction perpendicular to the plane of the display panel 10, the ambient light is easy to enter the first portion CF11 and the second portion CF12 in sequence. The color of the first portion CF11 is different from that of the second portion CF12, so that the difficulty of the light emitted from the second portion CF12 is high, which is beneficial to weakening the reflection phenomenon.

In the embodiment of the application, since the light absorption capacity of the color resistance material included in the light filtering structure CF is generally weaker than that of the black material, compared with the light shielding structure M', the difficulty in preparing the light filtering structure CF is lower, and the difficulty in preparing the light filtering structure CF is reduced on the premise of weakening the reflection phenomenon. In addition, by providing the first filter structure CF1 to overlap the first pixel opening OP1 in a direction perpendicular to the plane of the display panel 10, it is possible to realize that the first filter structure CF1 shields a portion of the first driving structure D1 exposed by the first pixel opening OP1, contributing to allowing ambient light to pass through the first filter structure before propagating to the first driving structure D1, thereby reducing the intensity of the ambient light propagating to the first driving structure D1.

Fig. 4 is a schematic cross-sectional view of a portion of a display panel according to the present application.

In one possible implementation, as shown in fig. 4, the first portion CF11 may not surround the surface of the first light emitting device L1 facing the light emitting surface side of the display panel 10. This arrangement can reduce the probability of light emitted from the surface of the first light emitting device L1 facing the light emitting surface side of the display panel 10 to propagate to the first portion CF11, contributing to a reduction in the proportion of light generated by the first light emitting device L1 that is absorbed by the first portion CF11 in the light generated by the first light emitting device L1.

In one embodiment of the application, the pixel defining layer PDL comprises black material.

In an embodiment of the present application, as shown in fig. 2, along a direction perpendicular to a plane of the display panel 10, the pixel defining layer PDL may overlap with a portion of the first driving structure D1, and a film layer of the pixel defining layer PDL may be located on a side of the film layer of the first driving structure D1 near the film layer of the first light emitting device L1. Therefore, the ambient light may be first incident on the pixel defining layer PDL during the propagation to the portion of the first driving structure D1 overlapping the pixel defining layer PDL, and in this case, if the pixel defining layer PDL includes a black material, the ambient light may be absorbed by the pixel defining layer PDL.

Fig. 5 is a schematic cross-sectional view of a portion of a display panel according to the present application.

In one embodiment of the present application, as shown in fig. 5, the pixel defining layer PDL further includes a light-transmitting opening gap, which does not overlap with the driving structure D in a direction perpendicular to the plane of the display panel 10.

In the embodiment of the present application, since the driving structure D does not overlap the light-transmitting opening gap, the light transmittance of the area overlapping the light-transmitting opening gap in the display panel 10 may be higher along the direction perpendicular to the plane of the display panel 10. Typically, this arrangement is suitable for display panels that are capable of transparent display, such as those included in a transparent screen.

In one embodiment of the application, in combination with fig. 2 and 3, a first projection SN covers the front projection SO of the pixel opening OP on the substrate B, the first projection SN comprising the front projection SC of the filter structure CF on the substrate B and the front projection SL of the light emitting device L on the substrate B.

In the embodiment of the present application, since the first projection SN covers the front projection SO of the pixel opening OP, and the filter structure CF may surround the surface of the light emitting device L, for the low-angle ambient light propagating toward the pixel opening OP, it includes a first case and a second case in the propagation process, where the first case may refer to the low-angle ambient light being blocked by the light emitting device L after entering the filter structure CF, and the second case may refer to the low-angle ambient light reaching the pixel opening OP through the filter structure CF. In the first case, it is difficult for the small-angle ambient light to propagate to the pixel opening OP; in the second case, part of the color light of the low-angle ambient light is absorbed by the filter structure CF during the process of passing through the filter structure CF. The low-angle ambient light may refer to ambient light traveling in a direction having a small angle with respect to a direction perpendicular to a plane of the display panel 10.

In one embodiment of the application, the second portion CF12 is blue or red.

In the embodiment of the present application, in order to ensure that the display panel 10 has high light transmittance, the display panel 10 is generally required to be filled with a transparent material. However, it is confirmed through many experiments that the partially transparent material has a low transmittance for light in the 400nm band, resulting in a low propagation efficiency of blue light in the display panel 10, and further, a yellowing phenomenon caused by blue deletion of the display screen is likely to occur. In order to reduce the yellowing phenomenon, the second portion CF12 may be set to be blue, so as to compensate for the missing blue of the display screen, and improve the display effect.

In addition, in order to reduce the difference in luminous efficiency between the light emitting devices L of different light emitting colors, it is generally necessary to perform roughening treatment on the light emitting device L of red light emitting color when preparing the light emitting device L of red light emitting color. However, the roughening treatment described above tends to cause the surface of the light-emitting device L having a red emission color to be rough. In the manufacturing process of the display panel 10, since the surface of the light emitting device L having the emission color of red is rough, the material constituting the second portion CF12 is more likely to remain on the surface of the light emitting device L having the emission color of red than the light emitting devices L having the emission colors of other colors. Accordingly, setting the second portion CF12 to red can reduce the degree of absorption of light generated by the light emitting device L of red emission color by the material remaining on the surface of the light emitting device L.

Fig. 6 is a schematic cross-sectional view of a portion of a display panel according to the present application.

In one embodiment of the present application, as shown in fig. 6, the plurality of driving structures D include a second driving structure D2, the plurality of light emitting devices L include a second light emitting device L2, the plurality of pixel openings OP include a second pixel opening OP2, the second light emitting device L2 is electrically connected to the second driving structure D2, and the second light emitting device L2 may be electrically connected to the pixel circuit through the second driving structure D2.

The light emitting color of the second light emitting device L2 is different from the light emitting color of the first light emitting device L1.

The plurality of filter structures CF include a second filter structure CF2, where an orthographic projection of the second filter structure CF2 on the substrate B overlaps an orthographic projection of the second pixel opening OP2 on the substrate B. Then, the second filter structure CF2 may overlap a portion of the second driving structure D2 exposed by the second pixel opening OP2 in a direction perpendicular to the plane of the display panel 10.

The second filter structure CF2 includes a third portion CF21 and a fourth portion CF22, the third portion CF21 and the fourth portion CF22 are arranged along a direction perpendicular to a plane of the display panel 10, and the third portion CF21 is located at a side of the fourth portion CF22 away from the substrate B. The third portion CF21 and the fourth portion CF22 may each include a color resist material, and the third portion CF21 may surround at least a portion of the surface of the second light emitting device L2, and the third portion CF21 may reduce ambient light propagating to a portion of the surface of the second light emitting device L2, reducing reflection.

The color of the third portion CF21 is the same as the light emitting color of the second light emitting device L2, and the color of the third portion CF21 is different from the color of the fourth portion CF 22. Since the third portion CF21 may surround a part of the surface of the second light emitting device L2, if the color of the third portion CF21 is different from the light emitting color of the second light emitting device L2, the absorption capacity of the third portion CF21 for the light generated by the second light emitting device L2 is strong. The above arrangement easily results in a relatively small proportion of the light generated by the second light emitting device L2 that can be emitted out of the display panel 10, relative to the case where the color of the third portion CF21 is the same as the light emitting color of the second light emitting device L2. Therefore, the color of the third portion CF21 may be set to be the same as the light emission color of the second light emitting device L2, reducing the degree of absorption of the light generated by the second light emitting device L2 by the third portion CF 21. In addition, since the color of the third portion CF21 is different from the color of the fourth portion CF22, the second filter structure CF2 has a higher efficiency of absorbing the ambient light during the process of passing through the third portion CF21 and the fourth portion CF 22. The arrangement is beneficial to reducing the light intensity of the ambient light emitted out of the second filter structure CF2 and weakening the reflection phenomenon. For example, when the color of the third portion CF21 and the color of the fourth portion CF22 are superimposed to be black, the second filter structure CF2 may completely absorb the ambient light incident thereto.

In addition, since the third portion CF21 and the fourth portion CF22 are arranged in a direction perpendicular to the plane of the display panel 10, for the small-angle ambient light propagating toward the second pixel opening OP2, it is easy to sequentially enter the third portion CF21 and the fourth portion CF22. The color of the third portion CF21 is different from that of the fourth portion CF22, so that the difficulty in emitting the small-angle ambient light out of the fourth portion CF22 is high, which is beneficial to weakening the reflection phenomenon.

Wherein the color of the fourth portion CF22 is the same as the color of the second portion CF 12.

In the embodiment of the present application, since the fourth portion CF22 and the second portion CF12 have the same color, the color resist material included in the fourth portion CF22 and the color resist material included in the second portion CF12 may be the same. The fourth portion CF22 and the second portion CF12 may be located on the same film layer, and in this case, if the color resistance material included in the fourth portion CF22 is the same as the color resistance material included in the second portion CF12, the fourth portion CF22 and the second portion CF12 may be prepared in the same preparation step, which is beneficial to reducing the preparation difficulty.

In one possible implementation, the color of the fourth portion CF22 and the color of the second portion CF12 may both be blue or red.

In one embodiment of the present application, as shown in fig. 6, a third driving structure D3 is included in the plurality of driving structures D, a third light emitting device L3 is included in the plurality of light emitting devices L, a third pixel opening OP3 is included in the plurality of pixel openings OP, and the third light emitting device L3 is electrically connected to the third driving structure D3.

The light emission color of the third light emitting device L3 is different from the light emission color of the first light emitting device L1 and the light emission color of the second light emitting device L2.

The plurality of filter structures CF include a third filter structure CF3, where an orthographic projection of the third filter structure CF3 on the substrate B overlaps an orthographic projection of the third pixel opening OP3 on the substrate B. Then, the third filter structure CF3 may overlap a portion of the third driving structure D3 exposed by the third pixel opening OP3 in a direction perpendicular to the plane of the display panel 10.

The third filter structure CF3 may include a color blocking material therein, and the third filter structure CF3 may surround at least a portion of the surface of the third light emitting device L3, and the third filter structure CF3 may attenuate ambient light transmitted to a portion of the surface of the third light emitting device L3, thereby attenuating a reflection phenomenon.

The color of the third filter structure CF3 is the same as the light emitting color of the third light emitting device L3, and the third filter structure CF3 absorbs light emitted from the third light emitting device L3 to a small extent.

The color of the third filter structure CF3 is the same as the color of the second portion CF12 and the color of the fourth portion CF 22.

In the embodiment of the present application, the color of the third filter structure CF3 is the same as the color of the second portion CF12 and the color of the fourth portion CF22, so that the color resistance material included in the third filter structure CF3 may be the same as the color resistance material included in the second portion CF12 and the color resistance material included in the fourth portion CF22, which is helpful to reduce the preparation difficulty.

In one possible implementation, the light emitting color of the third light emitting device L3 may be red, and the color of the third filter structure CF3, the color of the second portion CF12, and the color of the fourth portion CF22 may be red. In this embodiment, when the light emission color of the third light emitting device L3 and the color of the third filter structure CF3 are both red, the material remaining on the surface of the third light emitting device L3 may be red, so that the absorption degree of the material remaining on the surface of the third light emitting device L3 on the light generated by the third light emitting device L3 may be reduced.

In one possible implementation, the light emitting color of the third light emitting device L3 may be blue, and the color of the third filter structure CF3, the color of the second portion CF12, and the color of the fourth portion CF22 may be blue. In this implementation manner, the third filter structure CF3, the second portion CF12, and the fourth portion CF22 are all set to be blue, which is conducive to improving the blue duty ratio in the display screen and weakening the yellowing phenomenon.

Fig. 7 is a schematic cross-sectional view of a portion of the structure of a display panel according to the present application, and fig. 8 is a schematic top view of a portion of the structure of the display panel shown in fig. 7, wherein only the front projection of the portion of the structure of the display panel shown in fig. 7 on a substrate is shown in fig. 8.

In one embodiment of the present application, as shown in fig. 7, a redundant driving structure D4 is included in the plurality of driving structures D, and the light emitting device L is not electrically connected to the redundant driving structure D4.

In the manufacturing process of the display panel 10, a case where a part of the light emitting device L is damaged is often occurred, and the damaged light emitting device L is often selected to be removed in order not to affect the display effect. At this time, the driving structure D originally corresponding to the removed light emitting device L is a redundant driving structure D4, and no light emitting device L electrically connected to the redundant driving structure D4 exists in the display panel 10.

The pixel defining layer PDL further includes a plurality of redundancy openings OP4, the redundancy openings OP4 exposing at least part of the redundancy driving structure D4.

The plurality of filter structures CF include a redundant filter structure CF4, and in combination with fig. 7 and 8, an orthographic projection SCa of the redundant filter structure CF4 on the substrate B overlaps an orthographic projection SOa of the redundant opening OP4 on the substrate B. Then, in a direction perpendicular to the plane of the display panel 10, the redundant filter structure CF4 may overlap with a portion of the redundant driving structure D4 exposed by the redundant opening OP 4. Since the redundancy filter structure CF4 may include a color blocking material therein, the intensity of the ambient light propagating through the redundancy filter structure CF4 toward the redundancy opening OP4 may be reduced.

In one possible implementation, as shown in fig. 8, the front projection SCa of the redundant filter structure CF4 on the substrate B may cover the front projection SOa of the redundant opening OP4 on the substrate B.

Fig. 9 is a schematic cross-sectional view of a portion of a display panel according to the present application.

As shown in fig. 9, the color of the redundant filter structure CF4 corresponding to the redundant opening OP4 is the same as at least a portion of the color of the filter structure CF corresponding to the pixel opening OP adjacent to the redundant opening OP 4.

Since the color of the redundant filter structure CF4 corresponding to the redundant opening OP4 may be the same as at least a portion of the color of the filter structure CF corresponding to the adjacent pixel opening OP, the color resistance material included in the redundant filter structure CF4 may be the same as at least a portion of the color resistance material included in the filter structure CF corresponding to the adjacent pixel opening OP. Because the redundant filter structure CF4 and the part of the filter structure CF corresponding to the adjacent pixel opening OP can be positioned on the same film layer, the redundant filter structure CF4 and the filter structure CF corresponding to the adjacent pixel opening OP can be prepared in the same preparation step, thereby being beneficial to reducing the preparation difficulty.

As shown in fig. 9, the redundant filter structures CF4 corresponding to the redundant openings OP4 may include a first redundant filter structure CF4a, a second redundant filter structure CF4b, and a third redundant filter structure CF4c. Among the filter structures CF adjacent to the first redundant filter structure CF41, a distance between the first filter structure CF1 and the first redundant filter structure CF4a is smaller, and a color of the first portion CF11 of the first filter structure CF1 may be the same as that of the first redundant filter structure CF 4a. In the filter structure CF adjacent to the second redundant filter structure CF4b, a distance between the second filter structure CF2 and the second redundant filter structure CF4b is smaller, and a color of the third portion CF21 of the second filter structure CF2 may be the same as that of the second redundant filter structure CF 4b. In the filter structure CF adjacent to the third redundant filter structure CF4c, a distance between the third filter structure CF3 and the third redundant filter structure CF4c is smaller, and a color of the third filter structure CF3 may be the same as that of the third redundant filter structure CF4c.

In general, there may be one filter structure CF corresponding to the redundant filter structure CF4 with a small distance therebetween. For example, the first filter structure CF1 may correspond to the first redundant filter structure CF4 a; for example, the second filter structure CF2 may correspond to the second redundant filter structure CF4 b; for example, the third filter structure CF3 may correspond to the third redundancy filter structure CF4 c. At this time, the color of the redundant filter structure CF4 is the same as at least part of the color of the corresponding filter structure CF, which is conducive to realizing the regularity of the color setting of the redundant filter structure CF4 and improving the display effect.

FIG. 10 is a schematic cross-sectional view of a portion of a display panel according to the present application

In one possible implementation, as shown in fig. 10, the redundant filter structure CF4 includes a fifth portion CF31 and a sixth portion CF32, the fifth portion CF31 and the sixth portion CF32 are arranged along a direction perpendicular to a plane of the display panel 10, the fifth portion CF31 is located on a side of the sixth portion CF32 away from the redundant driving structure D4, and colors of the sixth portions CF32 corresponding to the redundant filter structures CF4 are the same.

Fig. 11 is a schematic cross-sectional view of a portion of a display panel according to the present application.

In one embodiment of the present application, in combination with fig. 7, 8 and 11, the plurality of driving structures D includes a redundancy driving structure D4, and the light emitting device L is not electrically connected to the redundancy driving structure D4.

The pixel defining layer PDL further includes a plurality of redundancy openings OP4, the redundancy openings OP4 exposing at least part of the redundancy driving structure D4.

The plurality of filter structures CF include a redundant filter structure CF4, and an orthographic projection SCa of the redundant filter structure CF4 on the substrate B overlaps an orthographic projection SOa of the redundant opening OP4 on the substrate B.

Wherein, the color of all the redundant filter structures CF4 is the same.

In the embodiment of the application, the colors of all the redundant filter structures CF4 are the same, which means that all the redundant filter structures CF4 can all comprise the same color resistance material, which is helpful for reducing the preparation difficulty.

In one embodiment of the present application, all of the redundant filter structures CF4 are blue in color.

In the embodiment of the present application, all the redundant filter structures CF4 may include blue color blocking materials, so that the area of the area including the blue color blocking materials may be larger than that of the area including the other color blocking materials in the display panel 10, and accordingly, the blue color in the display screen occupies a larger area.

Fig. 12 is a schematic top view of a portion of the structure of the display panel shown in fig. 11, and it should be noted that fig. 12 only illustrates an orthographic projection of a portion of the structure of the display panel shown in fig. 11 on a substrate.

In one embodiment of the present application, referring to fig. 11 and 12, in a direction perpendicular to a plane of the display panel 10, a forward projection area of the filter structure CF corresponding to the light emitting device L having a light emitting color different from that of the redundant filter structure CF4 is s1, and a forward projection area of the filter structure CF corresponding to the light emitting device L having a light emitting color identical to that of the redundant filter structure CF4 is s2, s1 > s2.

The light emitting color of the light emitting device L corresponding to the first filter structure CF1 may be a first color, the light emitting color of the light emitting device L corresponding to the second filter structure CF2 may be a second color, the light emitting color of the light emitting device L corresponding to the third filter structure CF3 may be a third color, and the first color, the second color, and the third color may be different from each other. Then, the color (first color) of the first portion CF11 of the first filter structure CF1, the color (second color) of the third portion CF21 of the second filter structure CF2, and the color (third color) of the third filter structure CF3 may be different from each other.

It should be noted that the first color, the second color and the third color may be one of red, blue and green, respectively.

Referring to fig. 11 and 12, the color of the redundant filter structure CF4 may be a third color, the area of the orthographic projection SC3a of the third filter structure CF3 may be s2 along the direction perpendicular to the plane of the display panel 10, and the area of the orthographic projection SC1a of the first portion CF11 of the first filter structure CF1 and the area of the orthographic projection SC2a of the third portion CF21 of the second filter structure CF2 may be s1, s1 > s2. At this time, the difference between the duty ratio of the first color in the display screen, the duty ratio of the second color in the display screen, and the duty ratio of the third color in the display screen may be small.

In this embodiment, by increasing the orthographic projection area of the filter structure CF corresponding to the light emitting device L having the light emitting color different from the color of the redundant filter structure CF4, s1 > s2 is realized, which is conducive to reducing the difference between the duty ratios of different colors in the display screen on the premise that the colors of all the redundant filter structures CF4 are the same, and improving the display effect.

Fig. 13 is a schematic diagram of a display device according to the present application.

The present application provides a display device 20, as shown in fig. 13, the display device 20 includes the display panel 10 provided in the above embodiment. The display device 20 may be a mobile phone, and the display device 20 may be an electronic device such as a computer or a television.

The reflection phenomenon of the display device 20 provided by the application to the external light is greatly inhibited, and the preparation difficulty of the display device 20 is reduced.

The same or similar parts between the various embodiments in this specification are referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are substantially similar to the method embodiment, the description is relatively simple, and reference should be made to the description in the method embodiment for relevant points.

Claims (12)

1. A display panel, comprising:

a substrate base;

a driving structure located at one side of the substrate base plate; a plurality of the driving structures comprise a first driving structure;

A light emitting device located at a side of the driving structure away from the substrate base plate; a plurality of the light emitting devices include a first light emitting device;

a pixel defining layer including a pixel opening; the pixel opening exposes at least a portion of the driving structure, and an orthographic projection of the pixel opening on the substrate overlaps with an orthographic projection of the light emitting device on the substrate; the plurality of pixel openings comprise first pixel openings, and the first light emitting device is electrically connected with the first driving structure;

A filter structure, wherein the orthographic projection of the filter structure on the substrate is overlapped with the orthographic projection of the pixel opening on the substrate; the plurality of filter structures comprise first filter structures, and orthographic projections of the first filter structures on the substrate overlap orthographic projections of the first pixel openings on the substrate; the first light filtering structure comprises a first part and a second part, the first part and the second part are arranged along the direction vertical to the surface of the display panel, and the first part is positioned at one side of the second part far away from the substrate base plate; wherein the color of the first portion is the same as the light emitting color of the first light emitting device, and the color of the first portion is different from the color of the second portion.

2. The display panel of claim 1, wherein the pixel defining layer comprises a black material.

3. The display panel of claim 2, wherein the pixel defining layer further comprises a light transmissive opening that does not overlap the driving structure in a direction perpendicular to a plane of the display panel.

4. The display panel of claim 1, wherein a first projection covers an orthographic projection of the pixel opening on the substrate, the first projection comprising an orthographic projection of the filter structure on the substrate and an orthographic projection of the light emitting device on the substrate.

5. The display panel of claim 1, wherein the second portion is blue or red.

6. The display panel according to claim 1 or 5, wherein a plurality of the driving structures include a second driving structure, a plurality of the light emitting devices include a second light emitting device, a plurality of the pixel openings include a second pixel opening, and the second light emitting device is electrically connected to the second driving structure; the light emitting color of the second light emitting device is different from the light emitting color of the first light emitting device;

The plurality of filter structures comprise second filter structures, and orthographic projections of the second filter structures on the substrate overlap orthographic projections of the second pixel openings on the substrate; the second light filtering structure comprises a third part and a fourth part, the third part and the fourth part are arranged along the direction vertical to the surface of the display panel, and the third part is positioned at one side of the fourth part far away from the substrate base plate; the color of the third portion is the same as the light emission color of the second light emitting device, and the color of the third portion is different from the color of the fourth portion;

Wherein the color of the fourth portion is the same as the color of the second portion.

7. The display panel of claim 6, wherein a third driving structure is included in the plurality of driving structures, a third light emitting device is included in the plurality of light emitting devices, a third pixel opening is included in the plurality of pixel openings, and the third light emitting device is electrically connected to the third driving structure; the light-emitting color of the third light-emitting device is different from the light-emitting color of the first light-emitting device and the light-emitting color of the second light-emitting device;

The plurality of light filtering structures comprise a third light filtering structure, the orthographic projection of the third light filtering structure on the substrate is overlapped with the orthographic projection of the third pixel opening on the substrate, and the color of the third light filtering structure is the same as the luminous color of the third luminous device;

the color of the third filtering structure is the same as the color of the second part and the color of the fourth part.

8. The display panel of claim 1, wherein a plurality of the driving structures include a redundant driving structure, the light emitting device not being electrically connected to the redundant driving structure;

the pixel defining layer also includes a plurality of redundant openings exposing at least a portion of the redundant drive structure;

the plurality of the filtering structures comprise redundant filtering structures, and orthographic projections of the redundant filtering structures on the substrate overlap orthographic projections of the redundant openings on the substrate;

The color of the redundant light filtering structure corresponding to the redundant opening is the same as the color of at least part of the light filtering structure corresponding to the pixel opening adjacent to the redundant opening.

9. The display panel of claim 1, wherein a plurality of the driving structures include a redundant driving structure, the light emitting device not being electrically connected to the redundant driving structure;

the pixel defining layer also includes a plurality of redundant openings exposing at least a portion of the redundant drive structure;

the plurality of the filtering structures comprise redundant filtering structures, and orthographic projections of the redundant filtering structures on the substrate overlap orthographic projections of the redundant openings on the substrate;

Wherein the colors of all the redundant light filtering structures are the same.

10. The display panel of claim 9, wherein the redundant filter structure is blue in color.

11. The display panel according to claim 9, wherein in a direction perpendicular to a plane of the display panel, a forward projection area of a filter structure corresponding to the light emitting device having a light emission color different from that of the redundant filter structure is s1, and a forward projection area of a filter structure corresponding to the light emitting device having a light emission color identical to that of the redundant filter structure is s2, s1 > s2.

12. A display device comprising a display panel according to any one of claims 1-11.