CN113823666A

CN113823666A - Display panel and display device

Info

Publication number: CN113823666A
Application number: CN202111048247.7A
Authority: CN
Inventors: 曹磊磊; 李晓
Original assignee: Hubei Changjiang New Display Industry Innovation Center Co Ltd
Current assignee: Hubei Changjiang New Display Industry Innovation Center Co Ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2021-12-21
Anticipated expiration: 2041-09-08
Also published as: CN113823666B

Abstract

The invention discloses a display panel and a display device, wherein the display panel comprises: a substrate; the protruding structure is positioned on one side of the substrate and comprises a first side surface, and an included angle between the first side surface and the plane where the substrate is positioned is smaller than 90 degrees; the reflecting layer is positioned on one side of the protruding structure, which is far away from the substrate, and at least covers the first side surface; the shading layer is positioned on one side, away from the substrate, of the reflecting layer and comprises a shading structure and a plurality of shading layer openings arranged at intervals through the shading structure; the light shielding layer opening exposes at least part of the first side surface; the color resistance structure comprises a first color resistance structure and a second color resistance structure; the second color resist structure at least partially overlaps the second opening in a direction perpendicular to a plane of the substrate, an orthographic area of the protrusion structure in the area of the first opening is S1, an orthographic area of the protrusion structure in the area of the second opening is S2, wherein,

the difference of the color separation degree of the display panel under the irradiation of the external light is weakened.

Description

Display panel and display device

Technical Field

The invention belongs to the technical field of electronic products, and particularly relates to a display panel and a display device.

Background

In the existing display panel, a POL-less technology, which uses a Color Filter (CF) instead of a Polarizer (POL), reduces the luminous flux of ambient light entering the display panel by using a black matrix and a Filter structure instead of a circular polarizer. However, due to the structural limitation of the existing display panel, the display panel applying the POL-less technology has an obvious color separation phenomenon under the irradiation of ambient light, which affects the use experience of users.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, which effectively weaken the color separation degree difference of the display panel under the irradiation of external light and improve the experience effect of the display panel.

In a first aspect, an embodiment of the present invention provides a display panel, including: a substrate; the protruding structure is positioned on one side of the substrate and comprises a first side surface, and an included angle between the first side surface and the plane where the substrate is positioned is smaller than 90 degrees; the reflecting layer is positioned on one side of the raised structure, which is far away from the substrate, and at least covers the first side surface; the light shielding layer is positioned on one side, away from the substrate, of the reflecting layer and comprises a light shielding structure and a plurality of light shielding layer openings arranged at intervals through the light shielding structure, and each light shielding layer opening comprises a first opening and a second opening; the light shielding layer opening exposes at least part of the first side surface; the color resistance structure comprises a first color resistance structure and a second color resistance structure, and the first color resistance structure and the second color resistance structure are different in color; the first color resist structure at least partially overlaps the first opening, the second color resist structure at least partially overlaps the second opening, an orthographic projection area of the protrusion structure in the area of the first opening is S1, an orthographic projection area of the protrusion structure in the area of the second opening is S2, in a direction perpendicular to the plane of the substrate,

in a second aspect, based on the same inventive concept, an embodiment of the present invention provides a display apparatus, including: a display panel as in any of the embodiments above.

Compared with the related art, the display panel provided by the embodiment of the invention comprises a substrate, a convex structure, a reflecting layer, a light shielding layer and a color resistance structure, and the difference range of the orthographic projection area S1 of the convex structure in the first opening area and the orthographic projection area S2 of the convex structure in the second opening area is limited to reduce the difference of the light quantity of the reflected light of the reflecting layer for the outside light passing through the first opening and the second opening, namely, the light output quantity of the reflected light is close when the reflected light passes through the first color resistance structure and the second color resistance structure with different colors, so that the emergent light of various colors can be mixed, the color separation degree difference of the display panel under the irradiation of the outside light is weakened, and the experience effect of the display panel is improved.

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 of the present invention will be briefly described below, and it is obvious that the drawings described below 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 top view of a display panel according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the film layers at B-B' of FIG. 1;

FIG. 4 is a schematic diagram of another exemplary film shown in FIG. 1 at B-B' in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of another exemplary film layer shown at B-B' in FIG. 1 according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an optical path of a display panel when external light is incident thereon according to an embodiment of the present invention;

fig. 7 is a schematic diagram of an optical path of another display panel according to an embodiment of the present invention when external light is incident;

FIG. 8 is a top view of another display panel provided in accordance with an embodiment of the present invention;

FIG. 9 is a top view of another display panel according to an embodiment of the present invention;

fig. 10 is a top view of another display panel according to an embodiment of the present invention;

FIG. 11 is a top view of another display panel according to an embodiment of the present invention;

fig. 12 is a top view of another display panel according to an embodiment of the present invention;

FIG. 13 is an enlarged view of a portion of FIG. 12 at C;

fig. 14 is a top view of another display panel according to an embodiment of the invention;

fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It should be noted that the embodiments provided in the embodiments of the present invention can be combined with each other without contradiction.

For better understanding of the present invention, the display panel and the display device provided by the embodiment of the present invention are described in detail below with reference to fig. 1 to 15.

Referring to fig. 1 to fig. 3, fig. 1 is a top view of a display panel according to an embodiment of the present invention; FIG. 2 is an enlarged view of a portion of FIG. 1 at A; fig. 3 is a schematic view of the film layer at B-B' in fig. 1. The section B-B' in FIG. 1 is only for illustrating the position of the section of FIG. 3. An embodiment of the present invention provides a display panel, including: a substrate 1; the convex structure 2 is positioned on one side of the substrate 1, the convex structure 2 comprises a first side surface 21, and an included angle gamma between the first side surface 21 and the plane where the substrate 1 is positioned is smaller than 90 degrees; the reflecting layer 3 is positioned on one side of the convex structure 2, which is far away from the substrate 1, and at least covers the first side surface 21; the light shielding layer 4 is positioned on one side, away from the substrate 1, of the reflective layer 3, the light shielding layer 4 comprises a light shielding structure 41 and a plurality of light shielding layer openings arranged at intervals through the light shielding structure 41, and the light shielding layer openings comprise first openings K1 and second openings K2; the light shielding layer opening exposes at least a part of the first side surface 21; the color resistance structure 5, the color resistance structure 5 includes a first color resistance structure 51 and a second color resistance structure 52, and the first color resistance structure 51 and the second color resistance structure 52 have different colors; in the direction perpendicular to the plane of the substrate 1, the first color resist structure 51 at least partially overlaps the first opening K1, the second color resist structure 52 at least partially overlaps the second opening K2, the forward projection area of the protrusion structure 2 in the area of the first opening K1 is S1, the forward projection area of the protrusion structure 2 in the area of the second opening K2 is S2, wherein,

the display panel provided by the embodiment of the invention comprises a substrate 1, a protrusion structure 2, a reflective layer 3, a light shielding layer 4 and a color resistance structure 5, wherein under the irradiation of external light, light reflected by the reflective layer 3 can be reflected to the color resistance structure 5, but because the reflective layer 3 is located on one side of the protrusion structure 2 away from the substrate 1 and at least covers the first side surface 21, the reflective layer 3 can be affected by the protrusion structure 2 to have an uneven problem, that is, the reflective layer 3 can form an inclined surface corresponding to the first side surface 21, because the relative positions and inclination angles of the inclined surfaces at different positions and the first color resistance structure 51 and the second color resistance structure 52 are different, the outgoing angle of the reflected light in the areas of the first color resistance structure 51 and the second color resistance structure 52 is different, so that the outgoing light is diverged, and the outgoing amount of the reflected light in the areas of the first color resistance structure 51 and the second color resistance structure 52 is also greatly different, further, the reflected light of the reflective layer 3 cannot be mixed into white light, and color separation occurs, which affects the experience effect of the display panel.

It should be noted that fig. 1 is only for illustrating the orthographic overlapping relationship of the protrusion structure 2 and the first opening K1, the second opening K2, and the light shielding structure 41 on the substrate 1, and cannot show the up-down stacking relationship between the protrusion structure 2 and the components such as the first opening K1, the second opening K2, and the light shielding structure 41.

In order to improve the problem of color separation, in the display panel provided in the embodiment of the present invention, the difference range between the forward projection area S1 of the protrusion structure 2 in the first opening K1 area and the forward projection area S2 of the protrusion structure 2 in the second opening K2 area is limited, so as to reduce the difference between the light quantity of the reflected light of the reflective layer 3 for the external light passing through the first opening K1 and the second opening K2, that is, to ensure that the light output quantities of the reflected light passing through the first color-resisting structure 51 and the second color-resisting structure 52 with different colors are similar, which is beneficial to mixing the emitted lights of different colors, reduces the difference in the degree of color separation of the display panel under the external light irradiation, and improves the experience effect of the display panel.

The protruding structure 2 is a structure protruding from the substrate 1, and the protruding structure 2 may be specifically formed by at least one of the pixel defining layer 6 and the spacer. The spacers may be made of the same material as the pixel defining layer 6, such as an organic material, and are raised relative to the pixel defining layer 6, and used to support a mask during the manufacturing process of the display panel, so as to form film layers such as light emitting units on the pixel defining layer 6 through the mask. Since the spacers are used to support the mask, the number and the position of the spacers are not particularly limited as long as the spacers can support the mask. The protrusion structure 2 may be other structures including an inclined side surface in the display panel, and is not particularly limited. The included angle γ between the first side surface 21 of the protruding structure 2 and the plane where the substrate 1 is located is less than 90 °, that is, the first side surface 21 is inclined at a certain angle relative to the substrate 1 to form an inclined surface, and the first side surface 21 is not limited to a plane, and may also be a curved surface or the like according to process requirements.

The light shielding layer opening exposes at least a part of the first side surface 21, specifically, in a direction perpendicular to a plane of the substrate 1, an orthographic projection of the light shielding layer opening on the substrate 1 and an orthographic projection of the first side surface 21 on the substrate 1 are at least partially overlapped, only a relative position relationship between the light shielding layer opening and the first side surface 21 is shown, and does not represent that the reflective layer 3 or other film layers are not covered on the first side surface 21 corresponding to the light shielding layer opening, and actually, the reflective layer 3 is covered on the first side surface 21.

In an OLED (Organic Light Emitting Diode) display panel, the reflective layer 3 may be a cathode layer, and specifically, the cathode layer generally uses a material with a low work function for electron injection, and in addition, the heat generated during operation can be reduced, and the service life of the Light Emitting device can be prolonged. The material of the cathode layer may be one of metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca), or indium (In), and may also be an alloy of the above metal materials, such as magnesium-silver alloy (Mg/Ag), lithium-aluminum alloy (Li/Al), which is not limited In this embodiment. Since the cathode layer is usually made of a metal layer with high reflectivity, and can reflect external light, the reflective layer 3 provided in the embodiment of the present invention may be specifically a cathode layer, and of course, the reflective layer 3 may also be of other high-reflectivity structures.

It should be noted that the color-resisting structure 5 includes a first color-resisting structure 51 and a second color-resisting structure 52, the first color-resisting structure 51 has a different color from the second color-resisting structure 52, the color-resisting structure 5 is used for filtering light to emit light with different colors, and the difference between the colors of the first color-resisting structure 51 and the second color-resisting structure 52 specifically means that the colors of the filtered light of the first color-resisting structure 51 and the filtered light of the second color-resisting structure 52 are different. For example, the external light is white light, and is filtered to red light after passing through the first color resist structure 51 which is a red color resist, that is, the reflected light corresponding to the reflective layer 3 is also red light, and the red reflected light can only be emitted through the first color resist structure 51 which is a red color resist, and cannot be emitted through the color resist structures 5 of other colors.

In a direction perpendicular to a plane of the substrate 1, the first color resist structure 51 at least partially overlaps the first opening K1, and the second color resist structure 52 at least partially overlaps the second opening K2, specifically, the color resist structure 5 covers the light shielding layer opening in the direction perpendicular to the plane of the substrate 1, the first color resist structure 51 may be partially filled in the first opening K1, or may be disposed on a side of the first opening K1 away from the substrate 1 or on a side of the first opening K1 close to the substrate 1, and there is no particular limitation. Similarly, the other color resists 5 may be arranged in the same manner as the first color resist 51, or different color resists 5 may be arranged between the openings of the light-shielding layer in the different manners listed above, and different manners may be used in combination.

It should be noted that the orthographic projection area of the protrusion structure 2 in the area of the first opening K1 is S1, the orthographic projection area of the protrusion structure 2 in the area of the second opening K2 is S2, S1 and S2 may specifically correspond to the orthographic projection areas of the protrusion structure 2 in different light shielding layer openings in a group of light emitting unit groups, one group of the first color resist structure 51 and the second color resist structure 52 may correspond to one light emitting unit group of the display panel, one light emitting unit group may specifically include one red, green, and blue light emitting unit 7, or may include a plurality of light emitting units 7 of the same color, and does not necessarily refer to the sum of the orthographic projection areas of the protrusion structure 2 in the area of the first opening K1 in the entire display panel, or the sum of the orthographic projection areas of the protrusion structure 2 in the area of the second opening K2.

Since the light shielding layer opening exposes at least a portion of the first side surface 21, the orthographic projection area S1 can be understood as the area of the first side surface 21 falling in the area of the first opening K1, the orthographic projection area S2 can be understood as the area of the first side surface 21 falling in the area of the second opening K2, the light rays of the external light irradiated to the reflective layer 3 covering the first side surface 21 are reflected by the reflective layer 3 and respectively emitted through the first opening K1 area and the second opening K2 area, and the orthographic projection area S1 and the orthographic projection area S2 can affect the light emitting amounts of the reflected light in the first opening K1 area and the second opening K2 area, respectively, thereby affecting the difference of the color separation degree of the display panel.

Specifically, in

When the difference between S1 and S2 is smaller, the

The closer to 0, i.e., when S1 equals S2,

the value of (a) is zero,

the smaller the value of (b) is, the smaller the difference between the values of (a) and (b) representing (S1 and (b) 2 is, the closer the light emitting amounts of the reflected light in the first opening K1 region and the second opening K2 region respectively are, and the difference of the color separation degree of the display panel is effectively reduced.

Referring to fig. 3, in some alternative embodiments, the protrusion structure 2 includes a first surface 22 and a second surface 23 oppositely disposed in the first direction Y, the first side surface 21 connects the first surface 22 and the second surface 23, the first surface 22 is disposed on a side of the second surface 23 away from the substrate 1, and the light shielding structure 41 at least partially shields the first surface 22 in a direction perpendicular to a plane of the substrate 1.

It can be understood that the second surface 23 is closer to the substrate 1 than the first surface 22, and will not affect the flatness of the reflective layer 3, and when the first surface 22 is planar, the reflective layer 3 on the first surface 22 is also planar, and the light shielding structure 41 does not completely cover the first surface 22, the external light perpendicularly enters the reflective layer 3 on the first surface 22, and the reflected light can return along the original path, and the problem of color separation will not occur. When the first surface 22 is a curved surface, the reflected light is emitted obliquely in the opening region of the light shielding layer compared to the incident light, that is, the same as the first side surface 21, and the first surface 22 may also cause a problem of color separation, specifically, the light shielding structure 41 may completely shield the first surface 22, so as to prevent the external light from being able to irradiate the reflective layer 3 on the first surface 22. Alternatively, the forward projection areas of the first surface 22 in the region of the first opening K1 and the second opening K2, respectively, are approximately equal in the direction perpendicular to the plane of the substrate 1, so as to ensure that the difference in the light emission amounts of the reflected light in the region of the first opening K1 and the second opening K2, respectively, is small.

With reference to fig. 3, in some alternative embodiments, the display panel includes a light emitting unit 7 and a pixel defining layer 6, the pixel defining layer 6 includes a pixel opening 61 and a pixel defining structure 62, the light emitting unit 7 is located in the pixel opening 61, and orthographic projections of the pixel opening 61 and the light shielding layer opening on the substrate 1 at least partially overlap; the protrusion structure 2 is located on a side of the pixel defining structure 62 away from the substrate 1.

It is understood that, in a direction perpendicular to the plane of the substrate 1, i.e. in the first direction Y, the light emitting unit 7 specifically includes an anode block, an organic light emitting layer, and a cathode layer, the cathode layer is disposed on the side of the pixel defining structure 62 away from the substrate 1, and the cathode layer is generally a film layer covering the pixel defining structure 62 and the organic light emitting layer entirely, and the protrusion structure 2 is disposed on the side of the pixel defining structure 62 away from the substrate 1. Specifically, since the spacer is disposed on the side of the pixel defining structure 62 away from the substrate 1 for supporting the mask, a film layer such as a light emitting unit is formed on the pixel defining layer 6 through the mask. Therefore, in this embodiment, the protruding structure 2 may be a spacer, and the spacer only needs to provide a supporting function for the mask, so that the spacer does not need to be disposed one-to-one or many-to-one with the light emitting units 7, that is, the spacer is not correspondingly disposed on each light emitting unit 7, and the spacer may specifically adopt the shape of a circular truncated cone, a conical frustum, or the like.

Optionally, the reflective layer 3 is a cathode layer covering the protrusion structure 2, and since the cathode layer covers the entire protrusion structure 2, the cathode layer may have an uneven problem, and by defining a difference range between an orthographic projection area S1 of the protrusion structure 2 in the area of the first opening K1 and an orthographic projection area S2 of the protrusion structure 2 in the area of the second opening K2, a difference value between light quantities of reflected light of the cathode layer covering the protrusion structure exiting from the first opening K1 and the second opening K2 is reduced, that is, a light quantity of the reflected light passing through the first color resist structure 51 and the second color resist structure 52 with different colors is ensured to be similar, so that a difference degree between color separations of the display panel under external light irradiation is effectively reduced.

Optionally, an encapsulation layer 8 is further disposed between the color resistance structure 5 and the pixel defining layer 6, the encapsulation layer 8 is used for blocking water and oxygen from entering the display panel, and the encapsulation layer 8 may be an organic encapsulation layer or an inorganic-organic-inorganic composite encapsulation layer. Specifically, the encapsulation layer 8 may adopt several combinations as follows: silicon nitride-organic material-silicon nitride; alumina + silicon nitride-organic material-silicon nitride + alumina; silicon oxide + silicon nitride-organic material-silicon nitride + silicon oxide. Of course, it is also possible to use a stack of several layers of inorganic material. For example, the combination of alumina + titania-alumina + titania is a laminate of four layers of alumina and titania, which has a good water and oxygen blocking effect, and at the same time, since each layer of inorganic material has a small thickness, the display panel of the embodiment of the present invention can still be used.

Optionally, the substrate 1 further includes a pixel circuit electrically connected to each anode block, the pixel circuit includes a plurality of thin film transistors TFT, and each thin film transistor TFT includes a source S, a drain D, a gate G, and an active layer J. The anode block is electrically connected to the source S or the drain D of the thin film transistor TFT, and when the gate G of the thin film transistor 22 controls the thin film transistor TFT to be turned on, the light emitting unit 7 receives the light emitting voltage signal, and the light emitting unit 7 emits light.

Referring to fig. 4, fig. 4 is a schematic diagram of another film layer at B-B' in fig. 1 according to an embodiment of the present invention. The section B-B' in FIG. 1 is only for illustrating the position of the section of FIG. 4. In some other embodiments, the display panel includes a light emitting unit 7 and a pixel defining layer 6, the pixel defining layer 6 includes a pixel opening 61 and a pixel defining structure 62, the light emitting unit 7 is located in the pixel opening 61, orthographic projections of the pixel opening 61 and the light shielding layer opening on the substrate 1 at least partially overlap, and the protrusion structure 2 is the pixel defining structure 62.

It will be appreciated that when the raised structure 2 is a pixel defining structure 62, the first side 21, i.e. the side where the pixel defining layer 6 forms the pixel opening 61, is obliquely arranged, since part of the cathode layer will also cover this part of the side. Therefore, the optical path and the light output of the external light at this part of the cathode layer reflected light are also affected by the side surface of the pixel defining structure 62, and the difference between the light output of the reflected light in the first opening K1 area and the light output in the second opening K2 area can be reduced by adjusting the orthographic projection area of the obliquely arranged side surface of the pixel defining layer 6 where the pixel opening 61 is formed on the substrate 1 corresponding to the group of light emitting units 7.

Optionally, as shown in fig. 3 and fig. 5, fig. 5 is a schematic diagram of a film layer at B-B' in fig. 1 according to another embodiment of the present invention. The position of the cross-section of fig. 5 is only indicated at B-B' in fig. 1. The raised structure 2 may further comprise a pixel defining structure 62 and a spacer located on a side of the pixel defining structure 62 facing away from the substrate 1, and the first side 21 comprises two parts, namely a side where the pixel defining layer 6 forms the pixel opening 61 and a side of the spacer, since both sides are covered with the reflective layer 3. Therefore, when the external light is irradiated, both the two side surfaces covered with the reflective layer 3 affect the optical path of the reflected light and the light output amount. In the present embodiment, the orthographic projection S1 can be regarded as the orthographic projection area sum of the two portions of the side face of the pixel defining layer 6 where the pixel opening 61 is formed and the side face of the spacer in the area of the first opening K1, and similarly, the orthographic projection S2 can be regarded as the orthographic projection area sum of the two portions of the side face of the pixel defining layer 6 where the pixel opening 61 is formed and the side face of the spacer in the area of the second opening K2.

Referring to fig. 6, fig. 6 is a schematic diagram of a light path of a display panel according to an embodiment of the present invention when external light enters the display panel. In fig. 6, some layers such as an organic light emitting layer, a cathode layer, and the like in fig. 5 are omitted for clarity of the light path. In order to adjust the light output amount of the reflected light at the light shielding layer opening, in some alternative embodiments, in the first direction Y, the point where the external light is incident on the first side 21 of the protruding structure 2 along the edge of the light shielding structure 41 is set as a first point, and in the second direction X, the distance d2 between the first point and the nearest pixel opening 61 has the following relationship:

d2≤0.5(d3×tan2α－d1)

where d1 is the width of the pixel aperture 61 in the second direction X, d3 is the distance from the incident point of the external light on the light-shielding layer aperture to the first point in the first direction Y, α is the angle between the first side surface 21 at the first point and the plane of the substrate 1, and the first direction Y intersects with the second direction X.

Specifically, in the embodiment of the present invention, the protrusion structure 2 is located on the side of the pixel defining structure 62 away from the substrate 1, when d2 is equal to 0.5(d3 × tan2 α -d 1), the reflected light can be emitted from the same light shielding layer opening when the reflected light is incident from the outside, and when d2 is less than 0.5(d3 × tan2 α -d 1), the reflected light at the first point will be shielded by the light shielding structure 41 and cannot be emitted, so that when the display panel is manufactured, the amount of the reflected light covering the first side surface 21 of the protrusion structure 2 exiting from the light shielding layer opening can be adjusted by adjusting the value of d 2. Optionally, d2 is greater than or equal to 2 μm and less than or equal to 20 μm, α is greater than or equal to 0 and less than or equal to 45 °, since the external light is incident to the first side surface 21 of the protruding structure 2 along the first direction Y, according to the angle relationship, the included angle α between the first side surface 21 of the protruding structure 2 at the first point and the plane where the substrate 1 is located, that is, the incident angle of the external light at the first point, can be known, and by adjusting the included angle α, the light output amount of the reflected light can be adjusted. Specifically, the larger the angle α is, the smaller the amount of reflected light is, and the smaller the angle α is, the larger the amount of reflected light is.

Referring to fig. 7, fig. 7 is a schematic diagram of a light path of another display panel according to an embodiment of the present invention when external light enters the display panel. In fig. 7, some layers, such as an organic light emitting layer, a cathode layer, etc., in fig. 5 are omitted for clarity of illustration of the light path. In other alternative embodiments, the slope angles at the positions of the first side surface 21 of the protruding structure 2 also affect the light output amount of the reflected light at the opening of the light shielding layer, and in the first direction Y, the point where the external light enters the first side surface 21 of the protruding structure 2 through the opening of the light shielding layer along the first direction Y is set as a second point, and the slope angle β of the first side surface 21 at the second point has the following relationship:

β≥0.5((π/2-arctan(h/c))

where h is a distance from an incident point of the external light on the opening of the light-shielding layer to the second point in the first direction Y, c is a distance from an incident point of the external light on the opening of the light-shielding layer to the nearest light-shielding structure 41 in the second direction X, and the first direction Y intersects with the second direction X.

In the first direction Y, a point where the external light enters the first side surface 21 of the protruding structure 2 through the light shielding layer opening along the first direction Y is set as a second point, that is, the second point may be an incident point where the external light enters any light shielding layer opening along the first direction Y, and is not limited thereto, so that the parameter relationship of the slope angle β provided in this embodiment may be applicable to three embodiments in which the protruding structure is the pixel defining layer 6, the protruding structure is the spacer, and the protruding structure includes the pixel defining layer 6 and the spacer at the same time. Optionally, the first direction Y is perpendicular to the second direction X.

When beta is 0.5 ((pi/2-arctan (h/c)), reflected light can be emitted from the same shading layer opening when the reflected light is just incident from the outside, when beta is more than 0.5 ((pi/2-arctan (h/c)), the reflected light can be blocked by the shading structure 41 and can not be emitted, or can be blocked by the color resistance structure 5 with a color different from that of the reflected light, the light output quantity of the reflected light covered on the first side surface 21 of the convex structure 2 at the shading layer opening is adjusted by adjusting the value of beta, and the uniformity of the divergence degree of the emitted light from each shading layer opening is improved, wherein optionally, h is more than or equal to 0 mu m and less than or equal to 60 mu m, and beta is more than or equal to 30 degrees and less than or equal to 45 degrees.

In some alternative embodiments, in the direction perpendicular to the plane of the substrate 1, the projection of one projection structure 2 overlaps with at least three color resistors of the color resistor structure 5, and each color resistor is different in color.

It should be noted that the color resistors overlapped with the projection of one protrusion structure 2 form a color resistor unit, and one color resistor unit corresponds to one light-emitting unit 7, and is used for filtering the light rays of various corresponding colors emitted by each light-emitting unit 7, so as to improve the color accuracy. Specifically, the projection of one protrusion structure 2 overlaps with at least three color resistors, and the color resistors correspond to different light shielding layer openings, specifically as shown in fig. 8, and fig. 8 is a top view of another display panel provided in an embodiment of the present invention. Each color resistor is one of red, blue and green respectively, so that reflected light can be mixed into white light when being emitted through each color resistor, and the problem of color separation is avoided.

As human eyes are most sensitive to green light, the light emitting amount of green reflected light can be properly reduced to avoid the user observing green reflected light, as shown in fig. 8, in some alternative embodiments, the color barrier structure 5 includes a red color barrier, a blue color barrier and a green color barrier, the light shielding layer opening includes a red color barrier opening KR, a blue color barrier opening KB and a green color barrier opening KG, and the red color barrier opening KR, the blue color barrier opening KB and the green color barrier opening KG form an opening group K; in the direction perpendicular to the plane of the substrate 1, the red color resistance opening KR, the blue color resistance opening KB and the green color resistance opening KG are respectively and correspondingly overlapped with at least part of the red color resistance, the blue color resistance and the green color resistance, in a group of opening groups K, the orthographic projection surface areas of the convex structure 2 falling in the red color resistance opening KR area, the blue color resistance opening KB area and the green color resistance opening KG area are respectively S11, S12 and S13, wherein S13 is not less than S11 and not more than S12.

It can be understood that, at a set of opening group K, the area of the orthographic projection that the protruding structure 2 falls on the green color resistance opening KG region is relatively large, that is, the amount of light that the external light irradiates the reflection layer 3 corresponding to the green color resistance opening KG region is relatively small, the amount of light that can be reflected from the reflection layer 3 is also relatively small, and then it is less to have guaranteed that the green glow that the green color resistance opening KG region was emergent is less, has reduced the risk that the user observed the green glow. From the viewpoint of product quality and customer experience, the display panel generally tends to be blue-black in the black state, i.e., the forward projection area of the protrusion structure 2 falling in the blue color block opening KB region is relatively large.

Within a group of opening groups K, due to the size and position limitations of the raised structures 2, the provision of only one raised structure 2 may not satisfy the requirement of defining the orthographic projection area of the raised structure 2 falling on the color-blocking opening regions of different colors.

To solve the above problem, as shown in fig. 9, fig. 9 is a top view of another display panel provided in an embodiment of the present invention. In some optional embodiments, the color-resisting structure 5 includes a red color-resisting layer, a blue color-resisting layer and a green color-resisting layer, the light-shielding layer opening includes a red color-resisting opening KR, a blue color-resisting opening KB and a green color-resisting opening KG, and the red color-resisting opening KR, the blue color-resisting opening KB and the green color-resisting opening KG form an opening group K; in the group of opening groups K, the number ratio of the red color resistance openings KR, the blue color resistance openings KB and the green color resistance openings KG is 1:1: 1; in a direction perpendicular to the plane of the substrate 1, within a set K of openings, at least two relief structures 2 are included.

In this embodiment, the ratio of the number of the red color-resisting openings KR, the number of the blue color-resisting openings KB, and the number of the green color-resisting openings KG in the group of openings K is 1:1:1, which corresponds to the ratio of the number of the red light-emitting units 7, the number of the blue light-emitting units 7, and the number of the green light-emitting units 7 in the group of light-emitting units 7 is 1:1:1, and can specifically correspond to the pixel arrangement manner such as YYG. In a group of opening groups K, including at least two protruding structures 2, when the forward projection areas of the protruding structures 2 falling in the red color resistance opening area, the blue color resistance opening area and the green color resistance opening area are respectively S11, S12 and S13, the forward projection area S11 is the sum of the forward projection areas of all the protruding structures 2 falling in the red color resistance opening area in the group of opening groups K, the forward projection area S12 is the sum of the forward projection areas of all the protruding structures 2 falling in the blue color resistance opening area in the group of opening groups K, and the forward projection area S13 is the sum of the forward projection areas of all the protruding structures 2 falling in the green color resistance opening area in the group of opening groups K.

As shown in fig. 10, fig. 10 is a top view of another display panel provided in the embodiment of the present invention. In some optional embodiments, the color-resisting structure 5 includes a red color-resisting layer, a blue color-resisting layer and a green color-resisting layer, the light-shielding layer opening includes a red color-resisting opening KR, a blue color-resisting opening KB and a green color-resisting opening KG, and the red color-resisting opening KR, the blue color-resisting opening KB and the green color-resisting opening KG form an opening group K; in the group of opening groups K, the number ratio of the red color resistance openings KR, the blue color resistance openings KB and the green color resistance openings KG is 1:1: 2; in a direction perpendicular to the plane of the substrate 1, within a set K of openings, at least two relief structures 2 are included.

In this embodiment, the ratio of the number of the red color-resist openings KR, the number of the blue color-resist openings KB, and the number of the green color-resist openings KG in the group of openings K is 1:1:2, which corresponds to the ratio of the number of the red light-emitting units 7, the number of the blue light-emitting units 7, and the number of the green light-emitting units 7 in the group of light-emitting units 7 is 1:1: 2. The quantity of green look hinders opening KG is more relatively, and in a set of opening group K, orthographic projection area S13 is that all protruding structures 2 fall on the regional orthographic projection area sum of a plurality of green look hinders opening KG. Of course, when the number ratio of the red color resist opening KR, the blue color resist opening KB and the green color resist opening KG in the group of opening groups K is 1:1:2, only one protrusion structure 2 may be disposed in the group of opening groups K, specifically referring to fig. 11, where fig. 11 is a top view of another display panel according to an embodiment of the present invention.

As shown in fig. 12 and 13, fig. 12 is a top view of another display panel provided in the embodiment of the present invention; fig. 13 is a partial enlarged view at C in fig. 12. In some alternative embodiments, when the orthographic projection of each pixel opening 61 on the substrate 1 is the same, the minimum distance t between the orthographic projection of the light shielding structure 41 on the substrate 1 and the orthographic projection of each adjacent pixel opening 61 on the substrate 1 is equal.

It should be noted that, because the light shielding structure 41 covers part of the protruding structure 2, the minimum distance t between the orthographic projection of the light shielding structure 41 on the substrate 1 and the orthographic projection of each adjacent pixel opening 61 on the substrate 1 is equal, and the requirement that the orthographic projection areas of the protruding structures 2 in each light shielding layer opening, which are not shielded by the light shielding structure 41, are approximately equal, can be more easily realized.

As shown in fig. 1, 9, 10, 11, 14, in some alternative embodiments, the orthographic projection of the projection structure 2 on the substrate 1 is in a rotationally symmetric pattern. For example, the projection structure 2 having a rectangular orthographic projection shown in fig. 1, 9, 10, and 11 or the projection structure 2 having a circular orthographic projection shown in fig. 14 may be a rotationally symmetric figure having another shape, such as a regular triangle or an ellipse, without any particular limitation. It should be noted that the higher the symmetry of the orthographic projection shape of the projection structure 2 on the substrate 1, the better the uniformity of the degree of divergence of the outgoing light from each light-shielding layer opening, contributing to the improvement of the diffraction fringes in the color separation.

An embodiment of the present invention further provides a display device, please refer to fig. 15, fig. 15 is a schematic structural diagram of the display device according to the embodiment of the present invention, and the display device includes: the display panel 100, the display panel 100 is the display panel in any of the above embodiments. Therefore, the display device provided in the embodiment of the present invention has the technical effects of the technical solutions of the display panel 100 in any of the above embodiments, and the structures and terms identical to or corresponding to those in the above embodiments are not repeated herein. The display device provided by the embodiment of the invention can be a mobile phone and can also be any electronic product with a display function, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.

As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.

It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.

Claims

1. A display panel, comprising:

a substrate;

the protruding structure is positioned on one side of the substrate and comprises a first side surface, and an included angle between the first side surface and the plane where the substrate is positioned is smaller than 90 degrees;

the reflecting layer is positioned on one side of the raised structure, which is far away from the substrate, and at least covers the first side surface;

the light shielding layer is positioned on one side, away from the substrate, of the reflecting layer and comprises a light shielding structure and a plurality of light shielding layer openings arranged at intervals through the light shielding structure, and each light shielding layer opening comprises a first opening and a second opening; the light shielding layer opening exposes at least part of the first side surface;

the color resistance structure comprises a first color resistance structure and a second color resistance structure, and the first color resistance structure and the second color resistance structure are different in color;

the first color resist structure at least partially overlaps the first opening, the second color resist structure at least partially overlaps the second opening, an orthographic projection area of the protrusion structure in the area of the first opening is S1, an orthographic projection area of the protrusion structure in the area of the second opening is S2, in a direction perpendicular to the plane of the substrate,

2. the display panel according to claim 1, wherein the protrusion structure includes a first surface and a second surface that are disposed opposite to each other, the first side surface connects the first surface and the second surface, the first surface is disposed on a side of the second surface away from the substrate, and the light shielding structure at least partially shields the first surface in a direction perpendicular to a plane of the substrate.

3. The display panel according to claim 1, wherein the display panel comprises a light emitting unit and a pixel defining layer, the pixel defining layer comprises a pixel opening and a pixel defining structure, the light emitting unit is located in the pixel opening, and orthographic projections of the pixel opening and the light shielding layer opening on the substrate at least partially overlap; the protruding structure is located on one side of the pixel defining structure far away from the substrate.

4. The display panel according to claim 1, wherein the display panel comprises a light emitting unit and a pixel defining layer, the pixel defining layer comprises a pixel opening and a pixel defining structure, the light emitting unit is located in the pixel opening, orthographic projections of the pixel opening and the light shielding layer opening on the substrate at least partially overlap, and the protruding structure is the pixel defining structure.

5. The display panel according to claim 3, wherein, in a first direction, assuming that a point at which external light is incident on the first side surface of the convex structure along an edge of the light shielding structure is a first point, a distance d2 between the first point and the nearest pixel opening in a second direction has a relationship:

d2≤0.5(d3×tan2α－d1)

d1 is the width of the pixel aperture in the second direction, d3 is the distance from the incident point of the external light on the light shielding layer aperture in the first direction to the first point, α is the angle between the first side surface at the first point and the plane of the substrate, and the first direction intersects with the second direction.

6. The display panel according to claim 1, wherein in a first direction, a point of the first side surface of the convex structure along the first direction incident through the light shielding layer opening is defined as a second point, and a slope angle β of the first side surface at the second point has the following relationship:

β≥0.5((π/2-arctan(h/c))

wherein h is a distance from an incident point of the external light on the opening of the light shielding layer to the second point in the first direction, c is a distance from an incident point of the external light on the opening of the light shielding layer to the nearest light shielding structure in the second direction, and the first direction and the second direction intersect.

7. The display panel according to claim 1, wherein in a direction perpendicular to the plane of the substrate, a projection of one of the protrusion structures overlaps with at least three color resists of the color resist structure, and each of the color resists is different in color.

8. The display panel of claim 1, wherein the color-resisting structure comprises a red color-resisting, a blue color-resisting and a green color-resisting, the light-shielding layer openings comprise a red color-resisting opening, a blue color-resisting opening and a green color-resisting opening, and the red color-resisting opening, the blue color-resisting opening and the green color-resisting opening form an opening group;

in the direction perpendicular to the plane of the substrate, the red color resistance opening, the blue color resistance opening and the green color resistance opening respectively correspond to and at least partially overlap with the red color resistance, the blue color resistance and the green color resistance, and in one group of the opening groups, the orthographic projection surface areas of the convex structures falling in the opening areas of the red color resistance, the blue color resistance and the green color resistance are respectively S11, S12 and S13, wherein S13 is not less than S11 and not more than S12.

9. The display panel of claim 1, wherein the color-resisting structure comprises a red color-resisting, a blue color-resisting and a green color-resisting, the light-shielding layer openings comprise a red color-resisting opening, a blue color-resisting opening and a green color-resisting opening, and the red color-resisting opening, the blue color-resisting opening and the green color-resisting opening form an opening group;

in the group of the openings, the number ratio of the red color resistance openings to the blue color resistance openings to the green color resistance openings is 1:1: 1;

and at least two convex structures are included in one group of the opening groups in the direction perpendicular to the plane of the substrate.

10. The display panel of claim 1, wherein the color-resisting structure comprises a red color-resisting, a blue color-resisting and a green color-resisting, the light-shielding layer openings comprise a red color-resisting opening, a blue color-resisting opening and a green color-resisting opening, and the red color-resisting opening, the blue color-resisting opening and the green color-resisting opening form an opening group;

in the group of the openings, the number ratio of the red color resistance openings to the blue color resistance openings to the green color resistance openings is 1:1: 2;

11. The display panel according to claim 4, wherein the orthographic projection of each pixel opening on the substrate is the same, and a minimum distance between the orthographic projection of the light shielding structure on the substrate and the orthographic projection of each adjacent pixel opening on the substrate is equal.

12. The display panel of claim 11, wherein an orthographic projection of the protrusion structure on the substrate is in a rotationally symmetric pattern.

13. A display device, comprising: a display panel according to any one of claims 1 to 12.