CN114975824A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN114975824A
CN114975824A CN202210543135.7A CN202210543135A CN114975824A CN 114975824 A CN114975824 A CN 114975824A CN 202210543135 A CN202210543135 A CN 202210543135A CN 114975824 A CN114975824 A CN 114975824A
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China
Prior art keywords
light
emitting unit
emitting
opening
openings
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Pending
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CN202210543135.7A
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Chinese (zh)
Inventor
刘威
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Xiamen Tianma Display Technology Co Ltd
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Xiamen Tianma Display Technology Co Ltd
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Priority to CN202210543135.7A priority Critical patent/CN114975824A/en
Publication of CN114975824A publication Critical patent/CN114975824A/en
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/856—Arrangements for extracting light from the devices comprising reflective means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
    • H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/44—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the coatings, e.g. passivation layer or anti-reflective coating
    • H01L33/46—Reflective coating, e.g. dielectric Bragg reflector
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels

Abstract

The application discloses a display panel and a display device, wherein the display panel comprises a substrate, a light-emitting element layer and a light regulation layer, wherein the light-emitting element layer is positioned on one side of the substrate and comprises light-emitting units with at least three colors; the light regulation and control layer is positioned on one side of the light-emitting element layer, which is far away from the substrate, and comprises a first regulation and control layer and a second regulation and control layer which are stacked along the direction of the light-emitting element layer, the refractive index of the second regulation and control layer is greater than that of the first regulation and control layer, the first regulation and control layer comprises a plurality of openings used for exposing the light-emitting units, and the side walls of the openings and the light-emitting surfaces of the light-emitting units form preset angles, so that part of light emitted by the light-emitting units is emitted from the openings after being irradiated to the side walls of the openings through the openings; the number of the openings corresponding to the light-emitting units is positively correlated with the area of the light-emitting units. The application provides a display panel can improve front view angle luminous efficiency, promotes the display effect.

Description

Display panel and display device
Technical Field
The application belongs to the technical field of display, and particularly relates to a display panel and a display device.
Background
With the development of display technology, the demand for display quality of display devices is increasing. The display panel comprises a red sub-pixel for emitting red light, a green sub-pixel for emitting green light and a blue sub-pixel for emitting blue light, and the front viewing angle light emitting efficiency of the red sub-pixel, the green sub-pixel and the blue sub-pixel is low, so that the requirement of users on high-quality display is difficult to meet.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which can improve the front view angle light-emitting efficiency of the display panel and improve the display effect of the display panel.
An embodiment of a first aspect of an embodiment of the present application provides a display panel, including:
a substrate;
the light-emitting element layer is positioned on one side of the substrate and comprises light-emitting units of at least three colors;
the light ray regulation and control layer is positioned on one side, away from the substrate, of the light-emitting element layer and comprises a first regulation and control layer and a second regulation and control layer which are stacked along the direction far away from the light-emitting element layer, the refractive index of the second regulation and control layer is larger than that of the first regulation and control layer, the first regulation and control layer comprises a plurality of openings used for exposing the light-emitting units, and the side walls of the openings and the light-emitting surfaces of the light-emitting units form preset angles, so that part of light rays emitted by the light-emitting units are emitted from the openings after being irradiated to the side walls of the openings through the openings;
wherein the number of the openings corresponding to the light-emitting unit is positively correlated with the area of the light-emitting unit.
Embodiments of the second aspect of the present application further provide a display device, including the display panel provided in the first aspect of the present application.
In the display panel that this application provided, set up light regulation and control layer in one side that light-emitting component layer deviates from the base plate, light regulation and control layer is arranged in promoting light-emitting component layer luminescence unit's normal visual angle luminous efficiency, including first regulation and control layer and second regulation and control layer. The first regulation layer comprises an opening for exposing the light-emitting unit, the second regulation layer is formed on one side of the first regulation layer, which is far away from the light-emitting element layer, and covers the opening, the refractive index of the second regulation layer is larger than that of the first regulation layer, so that when light rays irradiate into the second regulation and control layer from the opening and then irradiate into the first regulation and control layer from the second regulation and control layer, the light rays are irradiated from the environment with high refractive index to the environment with low refractive index and are totally reflected, so that by adjusting the size of the preset angle formed by the side wall of the opening for exposing the light-emitting unit and the light-emitting surface of the light-emitting unit, so that the light emitted from the light emitting element layer is incident to the second control layer and then irradiated to the first control layer by the second control layer, the light is totally reflected on the side wall of the opening and then emitted out of the opening, so that the light with a side view angle is changed into the light with a positive view angle, and the light emitting efficiency of the positive view angle is improved. Because there is the difference in the luminous efficiency promotion of positive visual angle in the trompil area of difference, consequently, the quantity of the trompil through making the luminescence unit correspond is positive correlation with luminescence unit's area, thereby the quantity of the trompil that corresponds when making luminescence unit's area big is many, the quantity of the trompil that corresponds when luminescence unit's area is less, so that the trompil that different luminescence unit correspond is close to luminescence unit's elevation angle luminous efficiency's promotion efficiency, and reduce each luminescence unit's the decay difference that looks sideways at angle luminous efficiency, thereby when promoting luminescence unit elevation angle luminous efficiency, reduce colour cast's production, make display panel's display effect better.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic top view of a display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic top view of another display panel provided in this embodiment of the present application;
fig. 4 is a schematic top view of another display panel provided in this embodiment of the present application;
fig. 5 is a schematic top view of another display panel provided in this embodiment of the present application;
FIG. 6 is a schematic view of a portion of the enlarged structure of FIG. 5;
fig. 7 is a schematic top view of another display panel provided in this embodiment of the present application;
fig. 8 is a schematic top view of another display panel provided in this embodiment of the present application;
fig. 9 is a schematic top view of another display panel provided in this embodiment of the present application;
fig. 10 is a schematic top view of another display panel provided in this embodiment of the present application;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present application.
In the drawings:
1-a display panel; 10-a substrate; 11-a light emitting element layer; 111-a light emitting unit; 1111-red light emitting unit; 1112-a green light emitting unit; 1113-blue light-emitting unit; 112-a first repeat unit; 1121 — first light emitting unit group; 1122-second light emitting cell group; 113-a second repeat unit; 114-a pixel defining layer; 1141-pixel opening; 14-an encapsulation layer; 12-a light regulating layer; 121-a first regulatory layer; 13-opening the hole; 131-a side wall; 122-a second regulatory layer; a-a first acute angle; 132 — a first opening; d-spacing; x-a first direction; y-a second direction; d-a preset distance; p-a first virtual quadrilateral; m-a third direction; n-a fourth direction; 2-display device.
Detailed Description
Features of various aspects of the present application and exemplary embodiments 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 application. It will be apparent, however, to one skilled in the art that the present application 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 application by illustrating examples thereof.
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.
The inventor finds that the display panel at least comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, light rays emitted by the red sub-pixel, the green sub-pixel and the blue sub-pixel comprise front-view angle light rays and side-view angle light rays, the side-view angle light rays are more, so that the light emitting efficiency of the front-view angle light rays is required to be improved, and the brightness of each sub-pixel is difficult to meet the requirement of a user on high-quality display. Based on the research on the above problems, the inventors provide a display panel and a display device to improve the front viewing angle light extraction efficiency of the display panel and improve the display effect of the display panel.
For better understanding of the present application, a display panel and a display device according to an embodiment of the present application will be described in detail below with reference to fig. 1 to 11.
Referring to fig. 1, an embodiment of the present application provides a display panel 1, where the display panel 1 includes a substrate 10, a light emitting device layer 11, and a light modulation layer 12.
The light emitting element layer 11 is located on one side of the substrate 10 and includes light emitting units 111 of at least three colors. Specifically, the light-emitting element layer 11 includes at least the light-emitting units 111 of the three primary colors, i.e., the red light-emitting unit 1111, the green light-emitting unit 1112, and the blue light-emitting unit 1113, and may further include a white light-emitting unit, which may be used to increase luminance of light. The light emitting element layer 11 further includes a pixel defining layer 114, and the pixel defining layer 114 is located on the substrate 10 side and includes pixel openings 1141 for disposing the respective light emitting cells 111.
The display panel 1 provided by the application can be a liquid crystal display panel 1; the self-luminous display panel 1 may also be provided, and specifically, the light emitting unit 111 layer may be an OLED device layer, a Micro-LED device layer, or a Mini-LED device layer, and the like, which is not particularly limited in the present application.
The light regulation layer 12 is located on a side of the light emitting element layer 11 away from the substrate 10, and includes a first regulation layer 121 and a second regulation layer 122 stacked in a direction away from the light emitting element layer 11. The refractive index of the second control layer 122 is greater than the refractive index of the first control layer 121, the first control layer 121 includes a plurality of openings 13 for exposing the light emitting units 111, and a predetermined angle a is formed between the sidewalls 131 of the openings 13 and the light emitting surfaces of the light emitting units 111, so that part of the light emitted by the light emitting units 111 is emitted from the openings 13 after being irradiated onto the sidewalls 131 of the openings 13 through the openings 13. The number of the openings 13 corresponding to the light emitting unit 111 is positively correlated to the area of the light emitting unit 111.
In the display panel 1 provided by the present application, the light regulation layer 12 is disposed on one side of the light-emitting element layer 11 departing from the substrate 10, and the light regulation layer 12 is used for improving the front viewing angle light-emitting efficiency of the light-emitting unit 111 in the light-emitting element layer 11, and includes the first regulation layer 121 and the second regulation layer 122. The first control layer 121 includes an opening 13 for exposing the light emitting unit 111, the second control layer 122 is formed on a side of the first control layer 121 away from the light emitting device layer 11 and covers the opening 13, a refractive index of the second control layer 122 is greater than a refractive index of the first control layer 121, so that when light is irradiated into the second control layer 122 from the opening 13 and then irradiated to the first control layer 121 from the second control layer 122, the light is irradiated from an environment with a high refractive index to an environment with a low refractive index and is totally reflected, and thus by adjusting a predetermined angle formed by the sidewall 131 of the opening 13 for exposing the light emitting unit 111 and the light emitting surface of the light emitting unit 111, the light is irradiated into the second control layer 122 from the light emitting device layer 11, is irradiated to the first control layer 121 from the second control layer 122, and is emitted from the opening 13 after being totally reflected on the sidewall 131 of the opening 13, so as to change the light of the side viewing angle into the light of the positive viewing angle, thereby improving the light emitting efficiency of the positive viewing angle. Because there is the difference in the luminous efficiency promotion of the positive visual angle in the area of different trompils 13, consequently, the quantity of trompil 13 through making the luminescence unit 111 correspond is positive correlation with the area of luminescence unit 111, thereby the quantity of the trompil 13 that corresponds when making the area of luminescence unit 111 big is many, the quantity of the trompil 13 that corresponds when the area of luminescence unit 111 is less is little, so that the improvement efficiency of the trompil 13 that different luminescence units 111 correspond to the elevation angle luminous efficiency of luminescence unit 111 is close, and reduce the attenuation difference of the side view angle luminous efficiency of each luminescence unit 111, thereby when promoting the elevation angle luminous efficiency of luminescence unit 111, reduce the production of colour cast, make the display effect of display panel 1 better.
In one possible embodiment, the light-emitting device layer 11 includes a red light-emitting unit 1111, a green light-emitting unit 1112, and a blue light-emitting unit 1113, the areas of the red light-emitting unit 1111 and the green light-emitting unit 1112 are smaller than the area of the blue light-emitting unit 1113, and the number of the openings 13 corresponding to the blue light-emitting unit 1113 is greater than the number of the openings 13 corresponding to the red light-emitting unit 1111 and the green light-emitting unit 1112.
There is the difference in the effect of trompil 13 area to promoting the light-emitting efficiency of positive visual angle light, specifically, the trompil 13 area is less, and is bigger to promoting the effect of the light-emitting efficiency of positive visual angle light. Since there are differences in the light emitting materials selected for the light emitting cells 111 of different colors in the display panel 1, the areas of the light emitting cells 111 of different colors are generally set to be different in order to ensure display quality. In general, the area of the blue light-emitting unit 1113 is larger than the areas of the red light-emitting units 1111 and the green light-emitting units 1112.
In the display panel 1 that provides in this application, the quantity through the trompil 13 that makes luminescence unit 111 correspond is positive correlation with luminescence unit 111's area, can make each trompil 13's area approach mutually, thereby make each trompil 13 approach to the effect that promotes the light-emitting efficiency of elevation angle light, reduce trompil 13 difference and the side view angle luminance decay difference to the promotion degree of the light-emitting efficiency of the elevation angle light of the luminescence unit 111 of different colours, in order to promote each luminescence unit 111's elevation angle luminance, reduce the probability that display panel 1 appears the colour cast simultaneously, display panel 1's display effect has been promoted.
In a possible embodiment, an encapsulation layer 14 is further disposed between the light emitting device layer 11 and the light regulating layer 12, the encapsulation layer 14 may be an organic material layer and an inorganic material layer that are stacked, and the encapsulation layer 14 may be used to isolate water and oxygen to protect the light emitting unit 111 and prevent the light emitting unit 111 from being corroded by water and oxygen to affect the light emitting effect.
In a possible embodiment, a side of the encapsulation layer 14 facing away from the substrate may further include a touch layer (not shown in the figure) to implement a touch operation on the display panel.
In one possible embodiment, a first acute angle is formed between a surface of the sidewall 131 of the opening 13 facing the opening 13 and a surface of the light emitting element layer 11 facing away from the substrate 10, the first acute angle opens to a side facing away from the opening 13, the first acute angle has a predetermined angle a, and the degree of the first acute angle is 50 ° to 88 °.
In the above embodiment, a first acute angle a is formed between a surface of the sidewall 131 of the opening 13 facing the opening 13 and a surface of the light emitting device layer 11 facing away from the substrate 10, and an opening of the first acute angle a faces a side facing away from the opening 13, so that the light of the side viewing angle emitted by the light emitting unit 111 firstly enters the second adjusting and controlling layer 122 located in the opening 13, and then emits to the sidewall 131 of the opening 13, i.e. the first adjusting and controlling layer 121, so as to generate total reflection and emit through the opening 13, thereby realizing adjustment and control of the light of the side viewing angle, so that the light becomes the light of the front viewing angle. The degree of the first acute angle a is set to be 50-88 degrees, so that the conversion efficiency of converting the light rays at the opposite side viewing angle into the light effect at the positive viewing angle can be further improved, and the regulation and control effect can be further ensured.
Specifically, the degree of the first acute angle a may be 50 °, 51 °, 55 °, 60 °, 64 °, 69 °, 71 °, 72 °, 78 °, 80 °, 85 °, 88 °, and the like, and the present application is not particularly limited.
In one possible embodiment, as shown in fig. 2, the blue light emitting unit 1113 is disposed in the corresponding opening 13 of the blue light emitting unit 1113: the opening 13 includes a first opening 132 facing the light emitting element layer 11.
When one blue light emitting unit 1113 corresponds to two openings 13, the ratio of the area of each first opening 132 to the area of the blue light emitting unit 1113 is 0.3-0.7.
Specifically, when the area of the blue light-emitting unit 1113 is 1 to 4 times the area of the green light-emitting unit 1112, or when the area of the blue light-emitting unit 1113 is 1 to 4 times the area of the red light-emitting unit 1111, the blue light-emitting unit 1113 may correspond to two openings 13, the areas of the red light-emitting unit 1111 and the green light-emitting unit 1112 are close to each other and may respectively correspond to one opening 13 or a plurality of openings 13, but it is required to ensure that the number of openings 13 corresponding to the red light-emitting unit 1111 is smaller than the number of openings 13 corresponding to the blue light-emitting unit 1113, and the number of openings 13 corresponding to the green light-emitting unit 1112 is smaller than the number of openings 13 corresponding to the blue light-emitting unit 1113. At this time, the area difference of each opening 13 is small, so that the adjusting function of each opening 13 is similar, the improvement degree of the front-view angle light emitting efficiency and the side-view angle light attenuation degree of each light emitting unit 111 are close to each other, and the color cast is further improved. Since the solid regions of the first control layer 121 are disposed between the adjacent first openings 132, it is impossible to expose all of the blue light-emitting units 1113 together by two first openings 132 corresponding to one blue light-emitting unit 1113, at this time, the area ratio of each first opening 132 to the blue light-emitting unit 1113 may be 0.3 to 0.7, and when the area ratio of each first opening 132 to the blue light-emitting unit 1113 may be 0.3, the orthographic projection of the first opening 132 on the blue light-emitting unit 1113 may fall within the blue light-emitting unit 1113, or the orthographic projection of the first opening 132 and the orthographic projection of the blue light-emitting unit 1113 on the substrate 10 partially overlap. When the area ratio of each of the first openings 132 to the blue light-emitting unit 1113 may be 0.7, orthographic projections of the first openings 132, the blue light-emitting unit 1113 on the substrate 10 may partially overlap. The ratio of the area of each first opening 132 to the area of the blue light emitting unit 1113 may be specifically 0.3, 0.33, 0.4, 0.42, 0.58, 0.6, 0.63, 0.7, etc., and the present application is not particularly limited.
As shown in FIG. 3, when one blue light-emitting unit 1113 corresponds to three openings 13, the ratio of the area of each first opening 132 to the area of the blue light-emitting unit 1113 is 0.2-0.5.
Specifically, when the area of the blue light-emitting unit 1113 is 2 to 6 times the area of the green light-emitting unit 1112, or when the area of the blue light-emitting unit 1113 is 2 to 6 times the area of the red light-emitting unit 1111, the blue light-emitting unit may correspond to three openings 13, and the areas of the red light-emitting unit 1111 and the green light-emitting unit 1112 are close to each other and may respectively correspond to one opening 13 or a plurality of openings 13, but it is required to ensure that the number of the openings 13 corresponding to the red light-emitting unit 1111 is smaller than the number of the openings 13 corresponding to the blue light-emitting unit 1113, and the number of the openings 13 corresponding to the green light-emitting unit 1112 is smaller than the number of the openings 13 corresponding to the blue light-emitting unit 111. At this time, the area difference of each opening 13 is small, so that the adjusting function of each opening 13 is similar, the improvement degree of the front-view angle light emitting efficiency and the side-view angle light attenuation degree of each light emitting unit 111 are close to each other, and the color cast is further improved.
Since the solid regions of the first control layer 121 are disposed between the adjacent first openings 132, it is impossible to expose all of the blue light-emitting units 1113 together by two first openings 132 corresponding to one blue light-emitting unit 1113, at this time, the area ratio of each first opening 132 to the blue light-emitting unit 1113 may be 0.2 to 0.5, and when the area ratio of each first opening 132 to the blue light-emitting unit 1113 may be 0.2, the orthographic projection of the first opening 132 on the blue light-emitting unit 1113 may fall within the blue light-emitting unit 1113, or the orthographic projection of the first opening 132 and the orthographic projection of the blue light-emitting unit 1113 on the substrate 10 partially overlap. When the area ratio of each of the first openings 132 to the blue light-emitting unit 1113 may be 0.5, orthographic projections of the first openings 132, the blue light-emitting unit 1113 on the substrate 10 may partially overlap. The ratio of the area of each first opening 132 to the area of the blue light emitting unit 1113 may be specifically 0.2, 0.25, 0.3, 0.31, 0.4, 0.44, 0.5, etc., and the present application is not particularly limited.
As shown in FIG. 4, when one blue light-emitting unit 1113 corresponds to four openings 13, the ratio of the area of each first opening 132 to the area of the blue light-emitting unit 1113 is 0.1-0.3. Specifically, when the area of the blue light-emitting unit 1113 is 3 to 8 times the area of the green light-emitting unit 1112, or when the area of the blue light-emitting unit 1113 is 3 to 8 times the area of the red light-emitting unit 1111, the blue light-emitting unit may correspond to four openings 13, the areas of the red light-emitting unit 1111 and the green light-emitting unit 1112 are close to each other and may respectively correspond to one opening 13 or a plurality of openings 13, but it is required to ensure that the number of the openings 13 corresponding to the red light-emitting unit 1111 is smaller than the number of the openings 13 corresponding to the blue light-emitting unit 1113, and the number of the openings 13 corresponding to the green light-emitting unit 1112 is smaller than the number of the openings 13 corresponding to the blue light-emitting unit 111. At this time, the area difference of each opening 13 is small, so that the adjusting function of each opening 13 is similar, the improvement degree of the front-view angle light emitting efficiency and the side-view angle light attenuation degree of each light emitting unit 111 are close to each other, and the color cast is further improved.
Since the solid regions of the first control layer 121 are disposed between the adjacent first openings 132, it is impossible to expose all of the blue light-emitting units 1113 together by two first openings 132 corresponding to one blue light-emitting unit 1113, at this time, the area ratio of each first opening 132 to the blue light-emitting unit 1113 may be 0.1 to 0.3, and when the area ratio of each first opening 132 to the blue light-emitting unit 1113 may be 0.1, the orthographic projection of the first opening 132 on the blue light-emitting unit 1113 may fall within the blue light-emitting unit 1113, or the orthographic projection of the first opening 132 and the orthographic projection of the blue light-emitting unit 1113 on the substrate 10 partially overlap. When the area ratio of each of the first openings 132 to the blue light-emitting unit 1113 may be 0.3, orthographic projections of the first openings 132, the blue light-emitting unit 1113 on the substrate 10 may partially overlap. The ratio of the area of each first opening 132 to the area of the blue light emitting unit 1113 may be specifically 0.1, 0.15, 0.2, 0.21, 0.3, etc., and the present application is not particularly limited.
In one possible embodiment, as shown in fig. 4, the blue light emitting unit 1113 is disposed in the corresponding opening 13 of the blue light emitting unit 1113: the opening 13 includes a first opening 132 facing the light emitting element layer 11.
The pitch d between the first openings 132 of the adjacent openings 13 is 0.5 μm to 10 μm in the arrangement direction of the openings 13.
In the above embodiment, the distance d between the adjacent first openings 132 is set to be 0.5 μm to 10 μm, so that under the condition allowed by the process, the size of the first openings 132 can be adaptively adjusted, and the size of each opening 13 in the display panel 1 is close to each other, so that the adjustment function of each opening 13 is close to each other, and the improvement degree and the side view angle light attenuation degree of the front view angle light extraction efficiency of each light emitting unit 111 are close to each other, thereby further improving the display effect.
In one possible embodiment, as shown in fig. 4, one red light-emitting unit 1111 corresponds to one opening 13, and the ratio of the area of the opening of each opening 13 facing the light-emitting element layer 11 to the area of the red light-emitting unit 1111 is 0.7 to 1.5.
In the above embodiment, since the area of the red light-emitting unit 1111 is smaller and can correspond to only one opening 13, at this time, the ratio of the area of the opening 13 facing the light-emitting device layer 11 to the area of the red light-emitting unit 1111 is set to be 0.7 to 1.5, so that the size of the opening 13 can be adaptively adjusted, and the sizes of the opening 13 corresponding to the red light-emitting unit 1111, the opening 13 corresponding to the blue light-emitting unit 1113, and the opening 13 corresponding to the green light-emitting unit 1112 are close to each other, so that the improvement degree of the light-emitting efficiency of the front view angle light and the attenuation degree of the side view angle light of each light-emitting unit 111 are close to each other, and the color cast is further improved.
Specifically, the ratio of the area of the opening of each opening 13 on the side facing the light emitting element layer 11 to the area of the red light emitting unit 1111 may be 0.7, 0.8, 0.9, 1.0, 1.3, 1.5, or the like, and the present application is not particularly limited.
In one possible embodiment, as shown in fig. 4, one green light emitting unit 1112 corresponds to one opening 13, and the ratio of the area of the opening of each opening 13 facing the light emitting device layer 11 to the area of the green light emitting unit 1112 is 0.7 to 1.5.
In the above embodiment, since the area of the green light emitting unit 1112 is smaller and can correspond to only one opening 13, at this time, the ratio of the area of the opening 13 facing the light emitting device layer 11 to the area of the green light emitting unit 1112 is set to 0.7 to 1.5, so that the size of the opening 13 can be adaptively adjusted, and the sizes of the opening 13 corresponding to the red light emitting unit 1111, the opening 13 corresponding to the blue light emitting unit 1113, and the opening 13 corresponding to the green light emitting unit 1112 are close to each other, so that the improvement degree of the light extraction efficiency of the front view angle light and the attenuation degree of the side view angle light of each light emitting unit 111 are close to each other, thereby further improving the color shift.
Specifically, the ratio of the area of the opening of each opening 13 on the side facing the light emitting element layer 11 to the area of the green light emitting unit 1112 may be 0.7, 0.8, 0.9, 1.0, 1.3, 1.5, or the like, and the application is not particularly limited.
In one possible embodiment, as shown in fig. 5 and 6, the light emitting element layer 11 includes a plurality of first repeating units 112, each of the first repeating units 112 includes a first light emitting unit group 1121 and a second light emitting unit group 1122 arranged along a first direction x, the first light emitting unit group 1121 and the second light emitting unit group 1122 include at least three light emitting units 111 of different colors arranged along a second direction y, wherein the first light emitting unit group 1121 and the second light emitting unit group 1122 are staggered by a preset distance D in the second direction y, the preset distance D is smaller than a width of the light emitting unit 111 along the second direction y, and adjacent light emitting units 111 in the first light emitting unit group 1121 and the second light emitting unit group 1122 are different in color along the first direction x.
In the above embodiment, in the first light-emitting unit group 1121 and the second light-emitting unit group 1122 in each first repeating unit 112, the colors of the adjacent light-emitting units 111 are different, specifically, the first light-emitting unit group 1121 may include a red light-emitting unit 1111, a green light-emitting unit 1112, and a blue light-emitting unit 1113 arranged along the second direction y, and the second light-emitting unit group 1122 may include a blue light-emitting unit 1113, a red light-emitting unit 1111, and a green light-emitting unit 1112 arranged along the second direction y, so that the color mixing effect of each light-emitting unit 111 in the first repeating unit 112 is better, more pixel points can be achieved, and the display effect is better.
In the above embodiment, the openings 13 corresponding to each light emitting unit 111 are arranged along the first direction x and/or the second direction y.
Specifically, the area of the red light-emitting unit 1111 is close to the area of the green light-emitting unit 1112, so the red light-emitting unit 1111 may correspond to one opening 13, the green light-emitting unit 1112 may correspond to one opening 13, and the area of the blue light-emitting unit 1113 is larger than the areas of the red light-emitting unit 1111 and the green light-emitting unit 1112, so the blue light-emitting unit 1113 may correspond to two openings 13, and the two openings 13 may be arranged along the first direction x or along the second direction y.
In the above embodiment, the orthographic projection of each light emitting unit 111 on the substrate 10 may be rectangular, the orthographic projection of each opening 13 on the substrate 10 may be rectangular, when two openings 13 corresponding to one blue light emitting unit 1113 are arranged along the second direction y, the length directions and the width directions of the openings 13 are parallel, so that the light regulation and control effects of the openings 13 are similar, that is, the improvement efficiencies of the openings 13 corresponding to different light emitting units 111 on the front viewing angle light emitting efficiency of each light emitting unit 111 are similar, and the attenuation difference of the side viewing angle light emitting brightness of each light emitting unit 111 is reduced, so that the front viewing angle light emitting efficiency of the light emitting units 111 is improved, the occurrence of color cast is reduced, and the display effect of the display panel 1 is better so as to further improve the display effect of the display panel 1.
Specifically, as shown in fig. 7, the area of the red light-emitting unit 1111 is close to the area of the green light-emitting unit 1112, so that the red light-emitting unit 1111 and the green light-emitting unit 1112 can respectively correspond to the two openings 13, and the two openings 13 corresponding to each light-emitting unit 111 can be arranged along the first direction x; the area of the blue light-emitting unit 1113 is larger than the areas of the red light-emitting unit 1111 and the green light-emitting unit 1112, so the blue light-emitting unit 1113 may correspond to the four openings 13, the four openings 13 may be arranged in two rows and two columns, and the row direction may be the first direction x and the column direction may be the second direction y.
In the above embodiment, the orthographic projection of each light emitting unit 111 on the substrate 10 may be rectangular, the orthographic projection of each opening 13 on the substrate 10 may be rectangular, the length directions of each opening 13 may be parallel, the width directions are parallel, so that the light regulation and control effects of each opening 13 are similar, that is, the improvement efficiency of the front viewing angle light emitting efficiency of each light emitting unit 111 by the opening 13 corresponding to different light emitting units 111 is similar, and the attenuation difference of the side viewing angle light emitting brightness of each light emitting unit 111 is reduced, so that the generation of color cast is reduced while the front viewing angle light emitting efficiency of the light emitting units 111 is improved, and the display effect of the display panel 1 is better so as to further improve the display effect of the display panel 1.
In one possible embodiment, as shown in fig. 8, the light emitting element layer 11 includes a plurality of second repeating units 113, each of the second repeating units 113 including two blue light emitting units 1113, two red light emitting units 1111, and four green light emitting units 1112; wherein the content of the first and second substances,
in the same first repeating unit 112, the two blue light-emitting units 1113 and the two red light-emitting units 1111 are arranged in two rows and two columns, and the two light-emitting units 111 arranged in the same row or the same column have different light-emitting colors; the centers of the two red light-emitting units 1111 and the centers of the two blue light-emitting units 1113 form a first virtual quadrangle P;
one green light-emitting unit 1112 and the remaining three green light-emitting units 1112 inside the first virtual quadrangle P form a second virtual quadrangle, wherein one red light-emitting unit 1111 is located inside the second virtual quadrangle;
the two red light-emitting units 1111 are arranged in the third direction m, the two blue light-emitting units 1113 are arranged in the fourth direction n, and the corresponding openings 13 of each light-emitting unit 111 are arranged in the third direction m and/or the fourth direction n.
In the above embodiment, the orthographic projection of each light emitting unit 111 on the substrate 10 may be rectangular, the area of the blue light emitting unit 1113 is larger than the area of the red light emitting unit 1111, and the area of the red light emitting unit 1111 is larger than the area of the green light emitting unit 1112, at this time, the red light emitting unit 1111 and the green light emitting unit 1112 correspond to one opening 13, the blue light emitting unit 1113 may correspond to four openings 13, and the four openings 13 are arranged in a 2 × 2 array, at this time, any two of the four openings 13 are arranged along the third direction m or the fourth direction n, so as to better expose the blue light emitting unit 1113, thereby enabling the light regulation and control effect to be better.
Alternatively, as shown in fig. 9, since the area of the red light-emitting unit 1111 is larger than the area of the green light-emitting unit 1112, the green light-emitting unit 1112 corresponds to one opening 13, the red light-emitting unit 1111 may correspond to two openings 13, and the two openings 13 are arranged along the third direction m or the fourth direction n, so that each opening 13 corresponding to the red light-emitting unit 1111 is better exposed to the red light-emitting unit 1111, and the light regulation effect is better.
Alternatively, as shown in fig. 10, the red light-emitting unit 1111 and the green light-emitting unit 1112 may respectively correspond to the two openings 13, the projection shape of the green light-emitting unit 1112 on the substrate 10 may be a polygon, the orthographic projection shape of the opening 13 corresponding to the green light-emitting unit 1112 on the substrate 10 may be an ellipse, and the two openings 13 corresponding to green are arranged along the third direction m, so as to better expose the green light-emitting unit 1112 and better regulate and control the light of the green light-emitting unit 1112; the orthographic projection of the red light-emitting unit 1111 on the substrate 10 is rectangular, so that the orthographic projection of the opening 13 corresponding to the red light-emitting unit 1111 on the substrate 10 can be rectangular to better expose the red light-emitting unit 1111 and better regulate and control the light of the red light-emitting unit 1111.
In the display panel 1 provided by the present application, the arrangement of each light emitting unit 111 is not limited to the arrangement described in the above embodiments, and the opening 13 corresponding to each light emitting unit 111 may be selected to be the same as the arrangement direction of at least some light emitting units 111, so that the manufacturing may be facilitated.
In a possible embodiment, the shape of the cross section of each opening 13 along the direction perpendicular to the thickness direction of the substrate 10 is rectangular, circular or elliptical, the edge of the cross section of each opening 13 along the direction perpendicular to the thickness direction of the substrate 10 may be set to be at least partially parallel to the edge of the orthographic projection of the light emitting unit 111 on the substrate 10, so as to better expose the light emitting unit 111 and better regulate and control the light of the light emitting unit 111, the shape of each opening 13 is not limited to the above, and the shape of each opening 13 is not particularly limited in this application.
In one possible embodiment, the shape and area of each opening 13 corresponding to each color of the light emitting unit 111 are the same.
In the above embodiment, the shape and area of each opening 13 in the first regulation layer 121 are the same, so that the regulation and control functions of each opening 13 on the light-emitting unit 111 are the same, thereby reducing the regulation and control difference of each light-emitting unit 111 after the regulation and control of the light regulation and control layer 12, that is, the improvement efficiency of the front viewing angle light-emitting efficiency of each light-emitting unit 111 by the openings 13 corresponding to different light-emitting units 111 is similar, and the attenuation difference of the side viewing angle light-emitting brightness of each light-emitting unit 111 is reduced, thereby reducing the generation of color cast while improving the front viewing angle light-emitting efficiency of the light-emitting units 111, and making the display effect of the display panel 1 better so as to further improve the display effect of the display panel 1.
The present application also provides a display device 2 comprising any one of the display panels 1 provided in the above-described embodiments of the present application.
The display device 2 may be a mobile terminal such as a mobile phone and a tablet computer, or a fixed terminal such as a television and a display, or may also be a wearable device such as a watch, and the application is not particularly limited.
The display device 2 has higher front view angle brightness, smaller color cast, better display effect and better user experience.
In accordance with the embodiments of the present invention as set forth above, these embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.

Claims (11)

1. A display panel, comprising:
a substrate;
the light-emitting element layer is positioned on one side of the substrate and comprises light-emitting units of at least three colors;
the light ray regulation and control layer is positioned on one side, away from the substrate, of the light-emitting element layer and comprises a first regulation and control layer and a second regulation and control layer which are stacked along the direction far away from the light-emitting element layer, the refractive index of the second regulation and control layer is larger than that of the first regulation and control layer, the first regulation and control layer comprises a plurality of openings used for exposing the light-emitting units, and the side walls of the openings and the light-emitting surfaces of the light-emitting units form preset angles, so that part of light rays emitted by the light-emitting units are emitted from the openings after being irradiated to the side walls of the openings through the openings;
wherein the number of the openings corresponding to the light-emitting unit is positively correlated with the area of the light-emitting unit.
2. The display panel according to claim 1, wherein a first acute angle is formed between a surface of a sidewall of the opening facing the opening and a surface of the light-emitting element layer facing away from the substrate, an opening of the first acute angle faces a side facing away from the opening, and the degree of the first acute angle is 50 ° to 88 °.
3. The display panel according to claim 1, wherein the light-emitting element layer includes a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit, an area of each of the red light-emitting unit and the green light-emitting unit is smaller than an area of the blue light-emitting unit, and a number of the openings corresponding to the blue light-emitting unit is larger than a number of the openings corresponding to the red light-emitting unit and the green light-emitting unit.
4. The display panel according to claim 3, wherein in the opening of the blue light emitting unit corresponding to the blue light emitting unit:
the opening comprises a first opening facing the light-emitting element layer;
when one blue light-emitting unit corresponds to two holes, the area ratio of each first opening to the blue light-emitting unit is 0.3-0.7;
when one blue light-emitting unit corresponds to three holes, the area ratio of each first opening to the blue light-emitting unit is 0.2-0.5;
when one blue light-emitting unit corresponds to four holes, the area ratio of each first opening to the blue light-emitting unit is 0.1-0.3.
5. The display panel according to claim 3, wherein in the opening of the blue light emitting unit corresponding to the blue light emitting unit:
the opening comprises a first opening facing the light-emitting element layer;
and along the arrangement direction of the open pores, the distance between the first openings of the adjacent open pores is 0.5-10 μm.
6. The display panel according to claim 3, wherein one of the red light-emitting units corresponds to one of the openings, and a ratio of an area of an opening of each of the openings on a side facing the light-emitting element layer to an area of the red light-emitting unit is 0.7 to 1.5;
one green light emitting unit corresponds to one opening, and the area ratio of the opening of each opening facing to the light emitting element layer to the green light emitting unit is 0.7-1.5.
7. The display panel according to claim 3, wherein the light-emitting element layer comprises a plurality of first repeating units, each of the first repeating units comprises a first light-emitting unit group and a second light-emitting unit group arranged in a first direction, the first light-emitting unit group and the second light-emitting unit group comprise at least three light-emitting units of different colors arranged in a second direction, wherein the first light-emitting unit group and the second light-emitting unit group are staggered in the second direction by a preset distance, the preset distance is smaller than a width of the light-emitting units in the second direction, and adjacent light-emitting units in the first light-emitting unit group and the second light-emitting unit group are different in color in the first direction;
the openings corresponding to each light emitting unit are arranged along the first direction and/or the second direction.
8. The display panel according to claim 3, wherein the light-emitting element layer comprises a plurality of second repeating units, each of which comprises two of the blue light-emitting units, two of the red light-emitting units, and four of the green light-emitting units; wherein, the first and the second end of the pipe are connected with each other,
in the same first repeating unit, the two blue light-emitting units and the two red light-emitting units are arranged in two rows and two columns, and the two light-emitting units arranged in the same row or the same column have different light-emitting colors; the centers of the two red light-emitting units and the centers of the two blue light-emitting units form a first virtual quadrangle;
one of the green light-emitting units and the remaining three of the green light-emitting units inside the first virtual quadrangle form a second virtual quadrangle, wherein one of the red light-emitting units is located inside the second virtual quadrangle;
the two red light-emitting units are arranged along a third direction, the two blue light-emitting units are arranged along a fourth direction, and the openings corresponding to each light-emitting unit are arranged along the third direction and/or the fourth direction.
9. The display panel according to claim 1, wherein a cross-section of each of the apertures in a direction perpendicular to a thickness direction of the substrate has a rectangular, circular or elliptical shape.
10. The display panel according to claim 9, wherein the shape and area of the openings corresponding to the light emitting units of each color are the same.
11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.
CN202210543135.7A 2022-05-18 2022-05-18 Display panel and display device Pending CN114975824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210543135.7A CN114975824A (en) 2022-05-18 2022-05-18 Display panel and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210543135.7A CN114975824A (en) 2022-05-18 2022-05-18 Display panel and display device

Publications (1)

Publication Number Publication Date
CN114975824A true CN114975824A (en) 2022-08-30

Family

ID=82984746

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210543135.7A Pending CN114975824A (en) 2022-05-18 2022-05-18 Display panel and display device

Country Status (1)

Country Link
CN (1) CN114975824A (en)

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