CN115942793A - Display screen and electronic equipment - Google Patents
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Abstract
The embodiment of the application provides a display screen and electronic equipment, and relates to the technical field of display. The light emitting side of the pixel unit is provided with the light emitting angle adjusting layer, the light emitting angle adjusting layer can enable sub-pixel units with different sizes and different light emitting colors in the pixel to have the same preset light emitting angle, and meanwhile, light emitted by the sub-pixel units can only be emitted from the light emitting angle adjusting layer to the opening of the sub-pixel units. Therefore, under the premise that the light-emitting angle of the sub-pixel unit is limited to the preset light-emitting angle to prevent peeping, light mixing of the sub-pixel unit can be avoided when light of the sub-pixel unit is emitted from the opening of the light-emitting angle adjusting layer opposite to the adjacent sub-pixel unit, and the display effect of the display screen is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display screen and electronic equipment.
Background
An Organic Light-Emitting Diode (OLED) display screen uses an OLE D device as a Light-Emitting sub-pixel, and the OLED device emits Light by means of photon recombination release by excitons, so that the OLED device has a large Light-Emitting angle (about 160 to 170 degrees). In some scenarios, it is desirable to have a larger lighting angle for the display screen so that the user can view the content displayed on the display screen from a larger viewing angle, for example, watching television; in other scenarios, however, a large illumination angle is not required, for example, in bank counters requiring privacy protection or in vehicle-mounted instruments not requiring a large illumination angle.
Disclosure of Invention
In order to overcome the technical problems mentioned in the above technical background, embodiments of the present application provide a display screen and an electronic device.
In a first aspect of the present application, a display screen is provided, where the display screen includes a pixel unit and a light-emitting angle adjusting layer located on a light-emitting side of the pixel unit;
the pixel unit comprises a first sub-pixel unit and a second sub-pixel unit which have different light-emitting colors, and the size of the first sub-pixel unit is smaller than that of the second sub-pixel unit;
the light emitted by the sub-pixel units with different sizes is positioned at the same preset light-emitting angle after passing through the light-emitting angle adjusting layer, wherein the light emitted by the sub-pixel units is emitted from the light-emitting angle adjusting layer to be opposite to the openings of the sub-pixel units.
In one possible embodiment of the present application, the light emission angle adjusting layer includes at least three light absorbing material layers arranged at intervals in a thickness direction of the display screen, and adjacent light absorbing material layers have a height difference in the thickness direction of the display screen;
the opening, opposite to the first sub-pixel unit, of the light absorption material layer farthest from the pixel unit is larger than the opening, opposite to the first sub-pixel unit, of the light absorption material layer closest to the pixel unit, and the light absorption material layer located in the middle is used for preventing light emitted by the second sub-pixel unit from being emitted from the opening, opposite to the first sub-pixel unit, of the light absorption material layer.
In one possible embodiment of the present application, the light emitting angle adjusting layer includes a first light absorbing material layer, a second light absorbing material layer, and a third light absorbing material layer sequentially arranged in a direction away from the pixel unit;
the first light absorption material layer is used for limiting the light emitting range of each sub-pixel unit;
the second light absorption material layer is used for limiting the light emitting angle of the first sub-pixel unit and blocking light emitted by the second sub-pixel unit from being emitted from the opening of the third light absorption material layer facing the first sub-pixel unit;
the third light absorption material layer is used for limiting a light emitting angle so that the first sub-pixel unit and the second sub-pixel unit have the same preset light emitting angle.
In one possible embodiment of the present application, in the thickness direction of the display screen, the distance between the first light absorbing material layer and the third light absorbing material layer is greater than or equal to the size of the largest sub-pixel unit in the pixel unit and less than or equal to three times the size of the largest sub-pixel unit in the pixel unit;
in the thickness direction of the display screen, the distance between the first light absorption material layer and the second light absorption material layer is greater than or equal to the size of the sub-pixel unit with the smallest size in the pixel units;
the thickness of the first light absorption material layer, the second light absorption material layer and the third light absorption material layer is larger than or equal to 1um and smaller than or equal to 10um.
In one possible embodiment of the present application, the opening of the second light absorbing material layer facing the first sub-pixel unit is smaller than the opening of the third light absorbing material layer facing the first sub-pixel unit;
optionally, an opening of the third light absorption material layer facing the first sub-pixel unit is larger than an opening of the third light absorption material layer facing the second sub-pixel unit;
optionally, a second sub-pixel unit in the pixel unit includes a third sub-pixel unit and a fourth sub-pixel unit with different emission colors, and the third sub-pixel unit and the fourth sub-pixel unit in the pixel unit are directly opposite to the same opening of the second light absorption material layer; or the third sub-pixel unit and the fourth sub-pixel unit in the pixel unit are opposite to different openings of the second light absorption material layer;
optionally, an opening of the third light absorption material layer facing the second sub-pixel unit is greater than or equal to an opening of the first light absorption material layer facing the second sub-pixel unit; and/or the opening of the second light absorption material layer facing the first sub-pixel unit is larger than or equal to the opening of the first light absorption material layer facing the first sub-pixel unit.
In one possible embodiment of the present application, the display screen further comprises an optical glue layer located between adjacent light absorbing material layers.
In one possible embodiment of the present application, the display screen further includes a light emitting device layer and an encapsulation layer, where the light emitting device layer includes pixel units arranged in an array;
the packaging layer is positioned on the light-emitting device layer;
the light emitting device layer includes a pixel defining layer defining each sub-pixel unit;
the orthographic projections of the first light absorbing material layer, the second light absorbing material layer and the third light absorbing material layer, which are opposite to the openings of the sub-pixel units, on the pixel defining layer cover the openings of the pixel defining layer for defining the sub-pixel units;
optionally, the first light-absorbing material layer is reused as the pixel defining layer, or the first light-absorbing material layer is located on one side of the encapsulation layer far away from the light-emitting device layer.
In one possible embodiment of the present application, the opening of the at least one light absorbing material layer is a circular opening;
the central axis of the circular opening which is opposite to the sub-pixel unit passes through the geometric center of the sub-pixel unit;
optionally, the sub-pixel unit is a circular sub-pixel unit.
In one possible embodiment of the present application, the display screen further includes a light condensing member;
the light condensing element is arranged on the light emitting side of the sub-pixel unit and used for condensing the light emitted by the sub-pixel unit towards the central axis direction of the sub-pixel unit, wherein the central axis of the sub-pixel unit passes through the geometric center of the sub-pixel unit and is vertical to the light emitting surface of the sub-pixel unit;
optionally, the light condensing element and the first light absorbing material layer are disposed in the same layer, and the light condensing element is located in the opening of the first light absorbing material layer.
In a second aspect of the present application, an electronic device is further provided, where the electronic device includes the display screen in any one of the possible embodiments of the first aspect.
The display screen and the electronic equipment provided by the embodiment of the application set up the luminous angle adjusting layer at the light-emitting side of the pixel unit, and the luminous angle adjusting layer can enable the sub-pixel units with different sizes and different luminous colors in the pixel to have the same preset luminous angle, and simultaneously, the light emitted by the sub-pixel units can be just emitted from the opening of the sub-pixel units through the luminous angle adjusting layer. Therefore, the purpose of peep prevention can be achieved by limiting the light emitting angle of each sub-pixel unit, and light mixing of the sub-pixel units can be avoided when light of the sub-pixel units is emitted from the opening of the light emitting angle adjusting layer opposite to the adjacent sub-pixel units, so that the display effect of the display screen is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 illustrates one of the schematic diagrams of adjusting the light emission of an OLED sub-pixel by using a light emission angle adjusting layer in the related art;
FIG. 2 illustrates a schematic distribution of one possible sub-pixel element;
FIG. 3 is a schematic view illustrating a light emission angle adjustment of the sub-pixel unit of FIG. 2 using the light emission angle adjustment layer of FIG. 1;
FIG. 4 illustrates a second schematic diagram of adjusting the light output of an OLED sub-pixel by using a light-emitting angle adjusting layer in the related art;
FIG. 5 is a schematic diagram illustrating a cross-sectional structure of a portion of a film layer of a display screen provided in this embodiment;
fig. 6 illustrates a second schematic diagram of a cross-sectional structure of a portion of a film layer of the display panel provided in this embodiment;
FIG. 7 is a schematic diagram illustrating a third cross-sectional structure of a portion of a film layer of a display panel provided in this embodiment;
fig. 8 is a diagram illustrating a positional relationship between the light absorbing material layer and the optical adhesive layer provided in the present embodiment;
FIG. 9 is a schematic diagram illustrating a cross-sectional structure of a portion of a film layer of the display panel provided in this embodiment;
FIG. 10 is a schematic diagram illustrating a film layer plane structure of a light absorbing material layer provided in this embodiment;
fig. 11 illustrates a schematic plan distribution diagram of a sub-pixel unit provided in the present embodiment;
fig. 12 illustrates a fifth schematic diagram of a cross-sectional structure of a part of the film layer of the display panel provided in this embodiment.
An icon: 10-a display screen; 110-a light emitting device layer; 1101-pixel unit; 11011-a first sub-pixel element; 11012-a second sub-pixel element; 11012A-third subpixel unit; 11012B-fourth subpixel unit; 1102-a pixel definition layer; 120-a light emission angle adjusting layer; 1201-a first light absorbing material layer; 1202-a second light absorbing material layer; 1203-a third light absorbing material layer; 130-an optical glue layer; 1301-a first optical glue layer; 1302-a second optical glue layer; 140-an encapsulation layer; 160-light gathering member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall be covered by the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, are only used for convenience of description and simplification of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
It should be noted that, in case of conflict, different features in the embodiments of the present application may be combined with each other.
In order to solve the technical problems mentioned in the background art, the following possible solutions are provided in the related art. As shown in fig. 1, the light emission angle adjusting layer 120 including two light absorbing material layers is used to absorb the large-angle light emitted from the pixel unit 1101, and only the small-angle light is allowed to exit. Referring to fig. 2 and fig. 3, fig. 2 illustrates a possible distribution diagram of sub-pixel units, and fig. 3 illustrates a diagram of adjusting the light emitting angle of the sub-pixel unit in fig. 2 by using the scheme in fig. 1. Since the sizes of different sub-pixel units in the OLED display are different, the description will be given by taking an example in which the pixel unit 1101 in fig. 2 includes a green sub-pixel unit G, a blue sub-pixel unit B, and a red sub-pixel unit R. The green sub-pixel unit G, the blue sub-pixel unit B and the red sub-pixel unit R have different sizes, the green sub-pixel unit G has the smallest size, and when the two light-absorbing material layers face the same opening of the sub-pixel unit, the light-emitting angles of the sub-pixel units through the openings of the two light-absorbing material layers are different, where the light-emitting angle of the green sub-pixel unit G is θ 1, the light-emitting angle of the blue sub-pixel unit B is θ 2, and the light-emitting angle of the red sub-pixel unit R is θ 3, as can be seen from fig. 3, the light-emitting angle of the sub-pixel unit is proportional to the size of the sub-pixel unit, the light-emitting angle of the green sub-pixel unit G in fig. 3 is the smallest, and a user can see the light emission of the sub-pixel unit only when the sub-pixel unit is located at a viewing angle corresponding to the light-pixel light-emitting angle, that is, in fig. 1101, the viewing angle of the green sub-pixel unit G is the smallest, and the different sub-pixel units have different viewing angles, which may cause a color cast phenomenon when the user views of the display screen.
In order to solve the display color shift phenomenon caused by the difference of the emission angles of the sub-pixel units, the related art provides the scheme shown in fig. 4, in which two light-absorbing material layers are disposed on the light-emitting side of the pixel unit, wherein the light-absorbing material layer away from the pixel unit is used for enabling different sub-pixel units to have the same emission angle, that is, in fig. 4, the emission angle of the green sub-pixel unit G is θ 1, the emission angle of the blue sub-pixel unit B is θ 2, and the emission angle of the red sub-pixel unit R is θ 3 are equal. However, the inventors found that in this solution, the opening of the light-absorbing material layer far from the pixel unit facing the green sub-pixel unit G with the smallest dimension is larger, which may cause light emitted from the blue sub-pixel unit B and/or the red sub-pixel unit R adjacent to the green sub-pixel unit G to exit from the opening (the dashed-line frame position area in the figure) of the light-absorbing material layer facing the green sub-pixel unit G, which may cause color mixing of the sub-pixel units to affect the display effect, and may also increase the display viewing angle to be unfavorable for peep prevention.
In order to solve the above mentioned problems, the inventor innovatively designs the following technical solutions, and specific implementations of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the defects of the above prior art solutions are the results of the inventor after practical and careful study, therefore, the discovery process of the above technical problems and the solutions proposed by the following embodiments for the above problems should be the contribution of the inventor to the present application in the invention creation process, and should not be understood as the technical content known by those skilled in the art.
Referring to fig. 5, fig. 5 illustrates a schematic diagram of a partial film structure of the display panel provided in this embodiment, the display panel 10 includes a pixel unit 1101 and a light-emitting angle adjusting layer 120, and the light-emitting angle adjusting layer 120 is located on a light-emitting side of the pixel unit 1101. The pixel unit 1101 includes a plurality of sub-pixel units with different sizes, for example, as shown in fig. 5, the pixel unit 1101 may include a first sub-pixel unit 11011 and a second sub-pixel unit 11012 with different emission colors, wherein a size d1 of the first sub-pixel unit 11011 is smaller than a size d2 of the second sub-pixel unit 11012. The dimension may refer to a length in a predetermined direction X (e.g., corresponding to the peep-proof direction), or a maximum dimension, or an area. The light emitted by the sub-pixel units with different sizes passes through the light-emitting angle adjustment layer 120 and then has the same preset light-emitting angle, the angles θ 1 and θ 2 are equal in the figure, and the light emitted by each sub-pixel unit only exits from the opening of the sub-pixel unit just opposite to the light-emitting angle adjustment layer 120, specifically, the light emitted by the first sub-pixel unit 11011 only exits from the opening of the first sub-pixel unit 11011 just opposite to the light-emitting angle adjustment layer 120, and the light emitted by the second sub-pixel unit 11012 only exits from the opening of the second sub-pixel unit 11012 just opposite to the light-emitting angle adjustment layer 120.
According to the scheme, the purpose of peep prevention can be achieved by limiting the light emitting angle of each sub-pixel unit, light mixing of the sub-pixel units can be avoided when light of the sub-pixel units is emitted from the opening of the light emitting angle adjusting layer opposite to the adjacent sub-pixel units, and the display effect of the display screen is improved.
In this embodiment, the light emission angle adjusting layer 120 may include at least one light absorbing material layer. The light emitting angle adjusting layer 120 may have a single-film structure or a multi-film structure. When the light emission angle adjusting layer 120 has a single-film structure, as shown in fig. 5, the aperture r of the opening of the light emission angle adjusting layer 120, which is directly opposite to the sub-pixel unit with the smallest size in the pixel unit 1101, gradually increases in a direction away from the sub-pixel unit. The aperture of the light-emitting angle adjustment layer 120 facing the second sub-pixel unit 11012 is constant or gradually increased along the direction away from the sub-pixel unit. The change rate of the opening of the light emission angle adjustment layer 120 facing the second sub-pixel unit 11012 is smaller than the change rate of the opening facing the first sub-pixel unit 11011.
When a single-film structure is used as the light-emitting angle adjustment layer 120, the light-emitting angle adjustment layer 120 with a thick film layer needs to be manufactured, which makes the film formation difficult. Optionally, referring to fig. 6, the light-emitting angle adjustment layer 120 is a multi-film structure, and illustratively, the light-emitting angle adjustment layer 120 includes at least three light-absorbing material layers arranged at intervals in the thickness direction of the display screen 10, and adjacent light-absorbing material layers have a height difference in the thickness direction (Y-axis direction in the figure) of the display screen 10, so as to change the light-emitting angle of the sub-pixel unit through the multiple light-absorbing material layers. The at least three light absorption material layers are used for adjusting the light emitted by each sub-pixel unit to the same preset light-emitting angle (for example, between 10 and 60 degrees). In this embodiment, the light absorbing material layer may be made of a Black light absorbing material, for example, a material for making a Black Matrix (BM). The light-emitting angle adjusting layer 120 has a multi-film structure, and the thickness of each light absorption material layer can be made thinner, so that patterning of each light absorption material layer is facilitated, and the risk of explosion due to exposure caused by excessively thick film thickness in the patterning process is avoided.
In this embodiment, the opening of the light-absorbing material layer farthest from the pixel unit and opposite to the first sub-pixel unit 11011 is larger than the opening of the light-absorbing material layer closest to the pixel unit and opposite to the first sub-pixel unit 11011, and the light-absorbing material layer in the middle is used for blocking the light emitted by the second sub-pixel unit 11012 from exiting from the opening of the light-absorbing material layer and opposite to the first sub-pixel unit 11011. With such a design, the first sub-pixel unit 11011 with a smaller size has the same predetermined light emitting angle as the second sub-pixel unit 11012 after passing through the light emitting angle adjusting layer 120, and color mixing of the sub-pixel units is avoided.
Optionally, an orthogonal projection of the opening of the light-absorbing material layer close to the pixel unit, which is opposite to the first sub-pixel unit 11011, on the substrate layer is located in an orthogonal projection of the opening of the light-absorbing material layer far from the pixel unit, which is opposite to the first sub-pixel unit 11011, on the substrate layer. Optionally, an orthogonal projection of the opening on the substrate layer, opposite to the second sub-pixel unit 11012, of the light-absorbing material layer closest to the pixel unit is located in an orthogonal projection of the opening on the substrate layer, opposite to the second sub-pixel unit 11012, of the light-absorbing material layer farthest from the pixel unit.
Further, referring to fig. 6 again, the light-emitting angle adjusting layer 120 includes a first light-absorbing material layer 1201, a second light-absorbing material layer 1202, and a third light-absorbing material layer 1203 sequentially arranged along a direction away from the pixel unit 1101, wherein the light-absorbing material layers may be implemented by using existing materials in a display screen, such as a black matrix.
The first light absorbing material layer 1201 serves to define the light emitting range of each sub-pixel unit. The second light absorption material layer 1202 is used to define the light emitting angle of the first sub-pixel unit 11011, and block the light emitted by the second sub-pixel unit 11012 from exiting from the third light absorption material layer 1203 facing the opening of the first sub-pixel unit 11011. The third light absorbing material layer 1203 is used for defining a light emitting angle so that the first sub-pixel unit 11011 and the second sub-pixel unit 11012 have the same preset light emitting angle.
In this embodiment, in the thickness direction of the display screen 10, the distance between the light absorbing material layer closest to the pixel unit (which may be the first light absorbing material layer 1201, for example) and the light absorbing material layer farthest from the pixel unit (which may be the third light absorbing material layer 1203, for example) is greater than or equal to the size of the largest sub-pixel unit in the pixel unit 1101, and is less than or equal to three times the size of the largest sub-pixel unit in the pixel unit 1101. In the thickness direction of the display screen 10, the distance between the light absorbing material layer closest to the pixel unit and the second light absorbing material layer 1202 in the middle is greater than or equal to the size of the smallest sub-pixel unit in the pixel unit 1101. Referring to fig. 6 again, if the size of the largest sub-pixel unit in the pixel unit 1101 is d22, the size of the smallest sub-pixel unit in the pixel unit 1101 is d1. Then, in the thickness direction of the display screen 10, the distance M1 between the first light absorbing material layer 1201 and the third light absorbing material layer 1203 satisfies the relationship d22 ≦ M1 ≦ 3 × d22, and the distance M2 between the first light absorbing material layer 1201 and the second light absorbing material layer 1202 satisfies the relationship d1 ≦ M2. The size of the sub-pixel unit corresponds to the length of the sub-pixel unit graph in a preset direction X (which can be consistent with the peep-proof direction). The peep-proof direction can be one or more. The sub-pixel units with different sizes have different sizes at least in one preset direction or a plurality of different preset directions. Optionally, the size of the sub-pixel unit corresponds to the maximum length of the sub-pixel unit pattern. Optionally, when the pattern of the sub-pixel unit is rectangular, the size of the sub-pixel unit corresponds to the length of the rectangle. Optionally, when the pattern of the sub-pixel unit is a circle, the size of the sub-pixel unit corresponds to the diameter of the circle.
In this embodiment, the thickness of the light absorbing material layer 120 is greater than or equal to 1um and less than or equal to 10um. Optionally, the thickness of the first light-absorbing material layer 1201 is greater than or equal to 1um, and less than or equal to 10um; optionally, the thickness of the second light absorbing material layer 1202 is greater than or equal to 1um, and less than or equal to 10um; optionally, the thickness of the third light absorbing material layer 1203 is greater than or equal to 1um, and less than or equal to 10um.
Above-mentioned design, on the one hand, the rete thickness on extinction material layer is thinner, can ensure that the patterning in-process can expose the pattern through, and on the other hand, different extinction material layers set up at the ascending distance in the thickness direction of display screen 10, can be convenient for adjust the luminous angle of sub-pixel unit through the difference in height between the extinction material layer in the thickness direction of display screen 10, prescribe a limit to a less luminous angle with the luminous angle of sub-pixel unit to realize the mesh of peeping-proof.
In detail, in order to make the first sub-pixel unit 11011 and the second sub-pixel unit 11012 have the same preset light emitting angle, the opening of the second light absorbing material layer 1202 facing the first sub-pixel unit 11011 may be smaller than the opening of the third light absorbing material layer 1203 facing the first sub-pixel unit 11011, so as to increase the light emitting angle of the first sub-pixel unit with smaller size. An orthographic projection of the opening of the second light absorbing material layer 1202 facing the first sub-pixel unit 11011 on the substrate layer may be within an orthographic projection of the opening of the third light absorbing material layer 1203 facing the first sub-pixel unit 11011 on the substrate layer. The opening of the third light absorbing material layer 1203 facing the first sub-pixel unit 11011 is larger than the opening of the third light absorbing material layer 1203 facing the second sub-pixel unit 11012. In this embodiment, optionally, the opening of the third light absorbing material layer 1203 facing the second sub-pixel unit 11012 is greater than or equal to the opening of the first light absorbing material layer 1201 facing the second sub-pixel unit 11012. An orthographic projection of the opening of the first light absorbing material layer 1201 facing the second sub-pixel unit 11012 on the substrate layer may be within an orthographic projection of the opening of the third light absorbing material layer 1203 facing the second sub-pixel unit 11012 on the substrate layer.
Optionally, the opening of the second light absorbing material layer 1202 facing the first sub-pixel unit 11011 is greater than or equal to the opening of the first light absorbing material layer 1201 facing the first sub-pixel unit 11011. An orthographic projection of the opening of the first light absorbing material layer 1201 facing the first sub-pixel unit 11011 on the substrate layer may be within an orthographic projection of the opening of the second light absorbing material layer 1202 facing the first sub-pixel unit 11011 on the substrate layer.
Referring to fig. 6 again, the second sub-pixel unit 11012 may include a third sub-pixel unit 11012A and a fourth sub-pixel unit 11012B with different colors of emitted light, and the third sub-pixel unit 11012A and the fourth sub-pixel unit 11012B in the pixel unit 1101 are directly opposite to the same opening of the second light absorbing material layer 1202; alternatively, the third sub-pixel unit 11012A and the fourth sub-pixel unit 11012B in the pixel unit 1101 face different openings of the second light absorbing material layer 1202 (as shown in fig. 7). In this embodiment, the first sub-pixel unit 11011 may be a green sub-pixel unit G, the third sub-pixel unit 11012A may be a red sub-pixel unit R or a blue sub-pixel unit B, and the fourth sub-pixel unit 11012B may be a blue sub-pixel unit B or a red sub-pixel unit R. Referring to fig. 6 and 7, the difference between the two figures is whether the second light-absorbing material layer 1202 includes a light-absorbing portion disposed between the third sub-pixel unit 11012A and the fourth sub-pixel unit 11012B, where the light-absorbing portion may be disposed according to whether light emitted by the third sub-pixel unit 11012A and the fourth sub-pixel unit 11012B is mixed, for example, the second light-absorbing material layer 1202 structure shown in fig. 7 may be adopted if light emitted by the third sub-pixel unit 11012A and the fourth sub-pixel unit 11012B is mixed; the second light absorbing material layer 1202 structure shown in fig. 6 can be used to prevent the light emitted from the third sub-pixel unit 11012A and the fourth sub-pixel unit 11012B from mixing.
In this embodiment, referring to fig. 8, adjacent light absorbing material layers have a height difference in a forward light emitting direction of the pixel unit 1101, and the display screen 10 may further include an optical adhesive layer 130 located between at least part of the adjacent light absorbing material layers, for example, a first optical adhesive layer 1301 is disposed between the first light absorbing material layer 1201 and the second light absorbing material layer 1202, and a second optical adhesive layer 1302 is disposed between the second light absorbing material layer 1202 and the third light absorbing material layer 1203. The optical adhesive layer 130 is light permeable. Above-mentioned design can be through the optical cement layer that sets up between adjacent extinction material layer to increase the difference in height of adjacent extinction material layer in the positive light-emitting direction of pixel 1101, so that adjust the luminous angle of sub-pixel unit through the difference in height between the extinction material layer, inject the luminous angle of sub-pixel unit at a less luminous angle, thereby realize the mesh of preventing peeping. The greater the distance between the light absorbing material layer positioned at the uppermost layer and the light absorbing material layer positioned at the lowermost layer, the more conveniently the light emitting angle of the sub-pixel unit is set to a smaller angle.
Further, referring to fig. 9, the display screen 10 further includes a light emitting device layer 110 and a package layer 140, the light emitting device layer 110 includes pixel units 1101 arranged in an array, the package layer 140 is located on the light emitting device layer 110, and optionally, the first light absorbing material layer 1201 is located on a side of the package layer 140 away from the light emitting device layer 110. Optionally, the encapsulation layer 140 is a single-film structure or a multi-film structure, and optionally, the encapsulation layer 140 may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. The inorganic encapsulation layer and the organic encapsulation layer may be alternately stacked in the thickness direction of the display screen. For example, the encapsulation layer 140 includes two inorganic encapsulation layers and an organic encapsulation layer between the two inorganic encapsulation layers. The light emitting device layer 110 may be an organic light emitting device layer. The encapsulation layer 140 has a function of blocking water and oxygen.
It is understood that in the present embodiment, the display screen 10 includes other film layers besides the light emitting device layer 110 and the encapsulation layer 140, such as a substrate layer and an array driving layer on the side of the light emitting device layer 110 far from the encapsulation layer 140, and a touch layer, a polarizer and a cover plate on the side of the encapsulation layer 140 far from the light emitting device layer 110.
Referring to fig. 9 again, the light emitting device layer 110 may further include a pixel defining layer 1102 defining each sub-pixel unit, and the orthographic projection of the openings of the sub-pixel units on the pixel defining layer 1102 by the first light absorbing material layer 1201, the second light absorbing material layer 1202 and the third light absorbing material layer 1203 covers the openings of the pixel defining layer defining the sub-pixel units. The pixel defining layer opening may be located within an orthogonal projection of the opening of the light absorbing material layer on the pixel defining layer 1102. The design can ensure that the forward light-emitting of the sub-pixel units can not be shielded, and the display brightness of the display screen during small-angle display is ensured. In this embodiment, the first light absorbing material layer 1201 can be further reused as the pixel defining layer 1102, so that the number of film layers can be reduced, the manufacturing cost of the display screen 10 can be reduced, and the process can be simplified. Optionally, the encapsulation layer is located between the first light absorbing material layer and the second light absorbing material layer, or the encapsulation layer is located between the second light absorbing material layer and the third light absorbing material layer.
Further, referring to fig. 10 and 11, fig. 10 illustrates a film layer plane structure diagram of a light absorbing material layer, and fig. 11 illustrates a plane distribution diagram of sub-pixel units. In this embodiment, the openings of at least one light absorbing material layer (at least one of the first light absorbing material layer 1201 closest to the pixel unit, the second light absorbing material layer 1202 in the middle, and the third light absorbing material layer 1203 farthest from the pixel unit) are circular openings (as shown in fig. 11), and/or the sub-pixel units are circular sub-pixel units (as shown in fig. 10), and the central axis of the circular opening facing the sub-pixel unit passes through the geometric center of the sub-pixel unit. The design can make the display pictures observed at any observation angle symmetrical along the central axis of the circular opening consistent, ensure the stability of observing the display pictures from each observation direction under a narrow angle of view, and realize peep prevention in each direction.
Further, referring to fig. 12, fig. 12 illustrates another film structure diagram of the display panel, in this embodiment, the display panel 10 further includes a light condensing element 160, the light condensing element 160 is disposed on the light emitting side of the sub-pixel unit, and the light condensing element 160 is used for condensing the light emitted by the sub-pixel unit toward the central axis direction of the sub-pixel unit, where the central axis of the sub-pixel unit passes through the geometric center of the sub-pixel unit and is perpendicular to the light emitting surface of the sub-pixel unit. Optionally, the light condensing element 160 is disposed on the same layer as the first light absorbing material layer 1201, the light condensing element 160 may be located in the opening of the first light absorbing material layer 1201, the light condensing element 160 is configured to condense the large-angle outgoing light toward the forward outgoing light direction, and the light condensing element 160 may be a light condensing lens, for example, a convex lens structure. The design can enhance the forward light emission of the display screen 10, and ensure the display brightness under a narrow viewing angle. The light-collecting member 160 may be disposed adjacent to or on the same layer as the light-absorbing material layer 1201 closest to the pixel unit to generate a light-collecting effect to improve the forward luminance.
The present embodiment further provides an electronic device, where the electronic device includes the display screen described in the foregoing embodiment, and because the light-emitting angle of each sub-pixel in the display screen is limited to the preset light-emitting angle, the electronic device can play a role of peep prevention when displaying through the display screen, so as to protect the personal privacy of the user. In addition, light mixing among the sub-pixel units can not occur, the display effect is ensured, and the use experience and market competitiveness of a user are improved.
To sum up, display screen and electronic equipment that this application embodiment provided set up luminous angle adjustment layer in pixel element's light-emitting side, and luminous angle adjustment layer can make the sub-pixel unit that has different sizes and different luminescent color in the pixel have the same luminous angle of predetermineeing, can also make the light that sub-pixel unit sent just to the opening outgoing of this sub-pixel unit from luminous angle adjustment layer simultaneously. Therefore, under the premise that the light-emitting angle of the sub-pixel unit is limited to the preset light-emitting angle to prevent peeping, light mixing of the sub-pixel unit can be avoided when the light of the sub-pixel unit is emitted from the opening of the light-emitting angle adjusting layer opposite to the adjacent sub-pixel unit, and the display effect of the display screen is improved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection of the present application.
Claims (10)
1. A display screen is characterized by comprising pixel units and a light-emitting angle adjusting layer positioned on the light-emitting side of the pixel units;
the pixel unit comprises a first sub-pixel unit and a second sub-pixel unit which have different light-emitting colors, and the size of the first sub-pixel unit is smaller than that of the second sub-pixel unit;
the light emitted by the sub-pixel units with different sizes has the same preset light-emitting angle after passing through the light-emitting angle adjusting layer, wherein the light emitted by the sub-pixel units is emitted from the light-emitting angle adjusting layer to just face the opening of the sub-pixel unit.
2. The display screen of claim 1,
the light-emitting angle adjusting layer comprises at least three light-absorbing material layers which are arranged at intervals in the thickness direction of the display screen, and the adjacent light-absorbing material layers have height difference in the thickness direction of the display screen;
the opening, opposite to the first sub-pixel unit, of the light absorption material layer farthest away from the pixel unit is larger than the opening, opposite to the first sub-pixel unit, of the light absorption material layer closest to the pixel unit, and the light absorption material layer located in the middle is used for preventing light emitted by the second sub-pixel unit from being emitted from the opening, opposite to the first sub-pixel unit, of the light absorption material layer.
3. The display panel according to claim 2, wherein the light emission angle adjustment layer includes a first light absorbing material layer, a second light absorbing material layer, and a third light absorbing material layer arranged in this order in a direction away from the pixel unit;
the first light absorption material layer is used for limiting the light emitting range of each sub-pixel unit;
the second light absorption material layer is used for limiting the light emitting angle of the first sub-pixel unit and blocking light emitted by the second sub-pixel unit from being emitted from the opening, opposite to the first sub-pixel unit, of the third light absorption material layer;
the third light absorption material layer is used for limiting a light emitting angle so that the first sub-pixel unit and the second sub-pixel unit have the same preset light emitting angle.
4. A display panel according to claim 3, wherein the distance between the first light absorbing material layer and the third light absorbing material layer in the thickness direction of the display panel is greater than or equal to the size of the largest sub-pixel unit of the pixel units and less than or equal to three times the size of the largest sub-pixel unit of the pixel units;
in the thickness direction of the display screen, the distance between the first light absorption material layer and the second light absorption material layer is larger than or equal to the size of the sub-pixel unit with the smallest size in the pixel units;
the thicknesses of the first light absorption material layer, the second light absorption material layer and the third light absorption material layer are larger than or equal to 1um and smaller than or equal to 10um.
5. A display screen as recited in claim 3, wherein the opening of the second layer of light absorbing material facing the first sub-pixel cell is smaller than the opening of the third layer of light absorbing material facing the first sub-pixel cell;
preferably, the opening of the third light absorption material layer facing the first sub-pixel unit is larger than the opening of the third light absorption material layer facing the second sub-pixel unit;
preferably, the second sub-pixel unit in the pixel unit includes a third sub-pixel unit and a fourth sub-pixel unit, which emit light with different colors, and the third sub-pixel unit and the fourth sub-pixel unit in the pixel unit are opposite to the same opening of the second light absorption material layer; or the third sub-pixel unit and the fourth sub-pixel unit in the pixel unit are opposite to different openings of the second light absorption material layer;
preferably, the opening of the third light absorption material layer facing the second sub-pixel unit is greater than or equal to the opening of the first light absorption material layer facing the second sub-pixel unit; and/or the opening of the second light absorption material layer facing the first sub-pixel unit is greater than or equal to the opening of the first light absorption material layer facing the first sub-pixel unit.
6. A display screen in accordance with claim 2, further comprising an optical glue layer between at least some adjacent layers of light absorbing material.
7. The display screen of claim 3, further comprising a light emitting device layer and an encapsulation layer, wherein the light emitting device layer comprises the pixel units arranged in an array;
the packaging layer is positioned on the light-emitting device layer;
the light emitting device layer includes a pixel defining layer defining each of the sub-pixel units;
the orthographic projection of the first light absorbing material layer, the second light absorbing material layer and the third light absorbing material layer facing the opening of the sub-pixel unit on the pixel defining layer covers the opening of the pixel defining layer defining the sub-pixel unit;
preferably, the first light-absorbing material layer is multiplexed as the pixel defining layer, or the first light-absorbing material layer is located on a side of the encapsulation layer away from the light-emitting device layer.
8. A display screen in accordance with any one of claims 2-7, wherein the openings of at least one of the layers of light absorbing material are circular openings, and/or the sub-pixel elements are circular sub-pixel elements;
the central axis of the circular opening which is opposite to the sub-pixel unit passes through the geometric center of the sub-pixel unit and is parallel to the thickness direction of the display screen.
9. A display screen in accordance with any one of claims 2 to 7, wherein the display screen further comprises a light collector;
the light condensing part is arranged on the light emitting side of the sub-pixel unit and used for condensing the light emitted by the sub-pixel unit towards the central axis direction of the sub-pixel unit, wherein the central axis of the sub-pixel unit passes through the geometric center of the sub-pixel unit and is vertical to the light emitting surface of the sub-pixel unit;
preferably, the light gathering member is disposed in the same layer as the first light absorbing material layer, and the light gathering member is located in the opening of the first light absorbing material layer.
10. An electronic device, characterized in that the electronic device comprises the display screen of any one of claims 1-9.
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| CN202211662394.8A CN115942793A (en) | 2022-12-23 | 2022-12-23 | Display screen and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211662394.8A CN115942793A (en) | 2022-12-23 | 2022-12-23 | Display screen and electronic equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491924A (en) * | 2019-08-27 | 2019-11-22 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN111613655A (en) * | 2020-05-27 | 2020-09-01 | 合肥维信诺科技有限公司 | Display panel, manufacturing method thereof and display device |
| CN113013310A (en) * | 2021-02-20 | 2021-06-22 | Tcl华星光电技术有限公司 | Display panel and display device |
| US20210234134A1 (en) * | 2019-06-06 | 2021-07-29 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Anti-peeping display panel and anti-peeping display apparatus |
-
2022
- 2022-12-23 CN CN202211662394.8A patent/CN115942793A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210234134A1 (en) * | 2019-06-06 | 2021-07-29 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Anti-peeping display panel and anti-peeping display apparatus |
| CN110491924A (en) * | 2019-08-27 | 2019-11-22 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN111613655A (en) * | 2020-05-27 | 2020-09-01 | 合肥维信诺科技有限公司 | Display panel, manufacturing method thereof and display device |
| CN113013310A (en) * | 2021-02-20 | 2021-06-22 | Tcl华星光电技术有限公司 | Display panel and display device |
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