CN113921572A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113921572A CN113921572A CN202111149426.XA CN202111149426A CN113921572A CN 113921572 A CN113921572 A CN 113921572A CN 202111149426 A CN202111149426 A CN 202111149426A CN 113921572 A CN113921572 A CN 113921572A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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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
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- H10K50/85—Arrangements for extracting light from the devices
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Abstract
The application provides a display panel and display device, display panel includes the substrate, light emitting device group, light path regulation and control layer and target optics rete, the light path regulation and control layer, set up in one side that the substrate was kept away from to light emitting device group, the light path regulation and control layer is including a plurality of second openings that are located first display area and the light path regulation and control portion that distributes around the second opening, orthographic projection and the at least partial overlap of first opening of second opening on pixel definition layer, light path regulation and control portion has the lateral wall towards the second opening, wherein, by the light emitting element outgoing and through the light of target optics rete reflection and refraction, adjust the route in order to dodge partial sensitization district outgoing via the lateral wall. The light emitting device group is provided with the light path regulation and control layer in the light-emitting direction in the embodiment of the application, and the light path regulation and control portion in the light path regulation and control layer can cover part of the photosensitive area in the area, so that the side wall of the light path regulation and control portion can be utilized to adjust the light propagation path, part of the photosensitive area is avoided, and the photosensitive effect of the photosensitive area is improved.
Description
Technical Field
The application relates to the technical field of display equipment, in particular to a display panel and a display device.
Background
With the development of the current display technology, the requirements of users on display devices are gradually increased, and in order to realize the full-screen display of electronic equipment, it is often necessary to simultaneously provide a light-emitting unit for realizing display and a photosensitive element for realizing image acquisition in a specific area of the display device. When the display device is used, part of light emitted by the light-emitting unit can be refracted and/or reflected inside the display device, so that the normal use of the photosensitive element is influenced.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which can effectively shield light emitted from the inside of the display panel, so that the problem of light leakage of a lower frame of the display panel is solved.
In a first aspect, an embodiment of the present application provides a display panel, which includes a first display area and a second display area, where a light transmittance of the first display area is greater than a light transmittance of the second display area, the first display area includes a photosensitive area, and the display panel includes a substrate, a light emitting device group, a light path adjusting layer, and a target optical film layer.
The light-emitting device group comprises a pixel defining layer and a plurality of light-emitting units, wherein the pixel defining layer is arranged on one side of a substrate and comprises a plurality of first openings, the light-emitting units correspond to the first openings, the orthographic projections of the light-emitting units on the pixel defining layer are positioned in the first openings, and the light-sensing area and the first openings are at least partially not overlapped along the light-emitting direction of the light-emitting units.
The light path regulating and controlling layer is arranged on one side, far away from the substrate, of the light emitting device group and comprises a plurality of second openings located in the first display area and a light path regulating and controlling portion distributed around the second openings, orthographic projections of the second openings on the pixel defining layer are at least partially overlapped with the first openings, and the light path regulating and controlling portion is provided with a side wall facing the second openings.
And the target optical film layer is arranged on one side of the light path regulating layer, which deviates from the light-emitting device group.
The light rays emitted by the light emitting unit and reflected and refracted by the target optical film layer are adjusted to avoid part of the photosensitive area to be emitted through the side wall.
In a second aspect, embodiments of the present application provide a display device, including the display panel of any one of the foregoing embodiments.
The utility model provides a display panel and display device, be provided with light path regulation and control layer on the light-emitting direction of luminescent device group, light path regulation and control portion place region in the light path regulation and control layer can cover partial photosensory area to can utilize the lateral wall of light path regulation and control portion to adjust light propagation path, in order to dodge partial photosensory area, improve the sensitization effect in photosensory area.
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 for those skilled in the art, other drawings can be obtained according to the 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 cross-sectional view taken along line B-B' of FIG. 1;
FIG. 3 is a schematic diagram of an optical path of the display panel shown in FIG. 2;
fig. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present application;
FIG. 5 is an enlarged schematic view of a region Q of the display panel shown in FIG. 4;
fig. 6 is a schematic structural diagram of an optical path adjusting part in a display panel provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of another optical path adjusting part in the display panel provided in the embodiment of the present application;
fig. 8 is a schematic structural diagram of another display panel provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram of another display panel provided in an embodiment of the present application;
fig. 10 is a schematic structural diagram of a further display panel provided in an embodiment of the present application;
FIG. 11 is an enlarged schematic view of a region P in the display panel shown in FIG. 10;
fig. 12 is a schematic structural diagram of a further display panel provided in an embodiment of the present application;
fig. 13 is a schematic structural diagram of another display panel provided in an embodiment of the present application;
FIG. 14 is an enlarged schematic view of a region R in the display panel shown in FIG. 4;
fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present application.
Description of the labeling:
1. a substrate;
2. a light emitting device group; 21. a pixel defining layer; 211. a first opening; 22. a light emitting unit; 221. a red light emitting unit; 222. a green light emitting unit; 223. a blue light emitting unit;
3. a light control regulation layer; 31. a second opening; 32. a light path regulating part; 321. a side wall; 322. an optical path regulating unit; 323. a cell sidewall; 33. a first surface;
4. a target optical film layer; 41. a cover plate; 42. a display surface;
5. an auxiliary regulation layer; 51. a first side;
6. a functional film layer;
7. a photosensitive element;
AA1, first display area; AA2, second display area; PS, photosensitive area;
x, the first direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent 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.
On electronic devices such as mobile phones and tablet computers, it is necessary to integrate a light-sensitive element such as a front camera, an infrared light sensor, a proximity light sensor, and the like on the side where the display panel is provided. In some embodiments, a transparent display area may be disposed on the electronic device, and the photosensitive component is disposed on the back of the transparent display area, so as to realize full-screen display of the electronic device on the premise of ensuring normal operation of the photosensitive component.
In order to realize the full-screen display of the electronic device, a certain number of light-emitting units are often required to be arranged in the light-transmitting display area to realize the display requirement of the light-transmitting display area. When displaying, the light emitted by the light-emitting unit returns to the transparent display area under the action of multiple refraction and/or reflection, and the normal operation of the photosensitive element is influenced.
In order to solve the above problems, embodiments of the present invention provide a display panel and a display device, and the following describes embodiments of the display panel and the display device with reference to the accompanying drawings.
Embodiments of the present invention provide a display panel, which may be an Organic Light Emitting Diode (OLED) display panel.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application, and fig. 2 is a schematic cross-sectional diagram along a direction B-B' in fig. 1.
The display panel includes a first display area AA1 and a second display area AA2, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, and the first display area AA1 includes a photosensitive area PS.
According to the display panel provided by the embodiment of the invention, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that the display panel can integrate a photosensitive element on the back of the first display area AA1, and the under-screen integration of a photosensitive component such as a camera is realized. Meanwhile, the first display area AA1 can display pictures, the display area of the display panel is increased, and the comprehensive screen design of the display device is realized.
The display panel includes a substrate 1, a group of light-emitting devices 2, a light control regulation layer 3, and a target optical film layer 4. The light emitting device group 2 includes a pixel defining layer 21 and a plurality of light emitting units 22 disposed on one side of the substrate 1, the pixel defining layer 21 includes a plurality of first openings 211, the light emitting units 22 correspond to the first openings 211, and the orthographic projection of the light emitting units 22 on the pixel defining layer 21 is located in the first openings 211, and the light sensing region PS and the first openings 211 are at least partially non-overlapped along the light emitting direction of the light emitting units 22.
The substrate 1 may be made of a light-transmitting material such as glass or Polyimide (PI). The pixel defining layer 21 is positioned at one side of the substrate 1 and defines a plurality of first openings 211 in the first display area AA1, and the plurality of light emitting cells 22 are respectively disposed in the plurality of first openings 211.
The photosensitive region PS is located in the first display region AA1 and has a relatively high light transmittance, so that most of the transparent region is located outside the first opening 211, so that external light vertically incident into the display panel can enter the photosensitive element through the photosensitive region PS, thereby achieving the light sensing of the photosensitive element. It should be noted that a partial region in the photosensitive region PS can overlap with a region where the first opening 211 is located, so that the photosensitive element can perform photosensitive action on a part of the external light obliquely incident into the display panel.
Optionally, the light transmittance of the photosensitive region PS is greater than or equal to 15%, and in order to ensure that the light transmittance of the photosensitive region PS is greater than 15%, even greater than 40%, and even higher, the light transmittance of each functional film layer of the display panel in this embodiment is greater than 80%, and even the light transmittance of at least some functional film layers is greater than 90%.
The light path regulating layer is disposed on a side of the light emitting device group 2 away from the substrate 1, the light path regulating layer includes a plurality of second openings 31 located in the first display area AA1 and light path regulating portions 32 distributed around the second openings 31, the second openings 31 at least partially overlap the first openings 211 in an orthographic projection of the pixel defining layer 21, and the light path regulating portions 32 have sidewalls 321 facing the second openings 31. The target optical film layer 4 is disposed on a side of the light path adjusting layer away from the light emitting device group 2, wherein light rays emitted from the light emitting unit 22 and reflected and refracted by the target optical film layer 4 are adjusted in path via the sidewall 321 to avoid a part of the photosensitive region PS to exit.
Referring to fig. 2 and 3, the target optical film layer 4 has a display surface 42, and the display surface 42 is located on a side of the target optical film layer 4 facing away from the substrate 1. A part of the light emitted by the light emitting unit 22 exits from the display surface 42 by refraction and forms a corresponding display screen, and another part of the light returns to the display panel under the combined action of refraction and reflection. Specifically, the light emitting unit 22 emits a plurality of light rays having different tilt angles, and the plurality of light rays reach the display surface 42 through multiple refractions. At this time, because the refractive indexes of the target optical film layer 4, other functional film layers, and the external environment medium are different, the light is refracted on the target optical film layer 4, and partially or totally reflected on the display surface 42 to return to the display panel and reach the photosensitive area PS, thereby affecting the photosensitive effect.
The light path adjusting layer is located on a side of the light emitting device group 2 facing away from the substrate 1, that is, in a light emitting direction of the light emitting device group 2. The light path regulating layer includes a plurality of light path regulating parts 32 for changing a light propagation path. Specifically, the position of the second opening 31 corresponds to the position of the first opening 211, and the light path regulating part 32 is distributed around the second opening 31, so that the region where the light path regulating part 32 is located can cover part of the photosensitive region PS, wherein the sidewall 321 of the light path regulating part 32 faces the second opening 31 along the first direction X. The light emitting unit 22 emits a part of light rays to return to the display panel by reflection and refraction of the target optical film layer 4, and then reaches the sidewall 321 of the light path regulating portion 32, and changes the propagation path by the refraction or reflection regulation of the sidewall 321 to avoid a part of the photosensitive region PS.
Referring to fig. 4, it can be understood that other functional film layers 6 are disposed between the light emitting device group 2 and the optical path adjusting layer, the functional film layers 6 are sequentially stacked on a side of the light emitting device group 2 away from the substrate 1, different functional film layers 6 have different functions, and other functional film layers may also be disposed between the target optical film layer 4 and the optical path adjusting layer.
This application embodiment is provided with the light path regulation and control layer through being provided with light path regulation and control layer in light-emitting device group 2 light-emitting direction, and the light path regulation and control portion 32 place region in the light path regulation and control layer can cover partial light sensing zone PS to lateral wall 321 that can utilize light path regulation and control portion 32 adjusts the light ray propagation path, in order to dodge partial light sensing zone PS, improves the sensitization effect of light sensing zone PS.
Referring to fig. 4 and 5, in some embodiments, the display panel further includes an auxiliary control layer 5, the auxiliary control layer 5 is disposed on a side of the optical path control layer facing away from the substrate 1 and at least partially covers the second opening 31, and a refractive index of the optical path control layer is smaller than a refractive index of the auxiliary control layer 5.
The auxiliary control layer 5 and the optical path control layer are stacked, and the auxiliary control layer 5 at least partially covers the second opening 31, and optionally, a part of the material in the auxiliary control layer 5 is filled in the second opening 31. The auxiliary control layer 5 plays a role in auxiliary control of the light propagation path, the light emitted by the light emitting unit 22 passes through the second opening 31 to reach the auxiliary control layer 5, then enters the target optical film layer 4 through refraction, and returns to the auxiliary control layer 5 through reflection of the display surface 42, and finally the light moves to reach the side wall 321 of the light path control part 32 and moves through refraction or reflection of the light path control part 32. In this process, part of the light enters the light path regulating part 32 from the auxiliary regulating layer through the sidewall 321, as shown in fig. 5, the dotted line in fig. 5 represents the normal direction in which the light reaches the corresponding position in the sidewall 321, and since the refractive index of the light path regulating layer is smaller than that of the auxiliary regulating layer 5, the incident angle of the light at the sidewall 321 is smaller than the refraction angle, so that the light escapes from the partial photosensitive region PS.
With continued reference to fig. 4, in some embodiments, the target optical film layer 4 includes a cover plate 41, the cover plate 41 is disposed on a side of the auxiliary control layer 5 facing away from the substrate 1, and a refractive index of the cover plate 41 is smaller than a refractive index of the auxiliary control layer 5.
The light emitted by the light emitting unit 22 is reflected back to the display panel through the cover plate 41, the light reflected by the cover plate 41 first reaches the auxiliary control layer 5, the auxiliary control layer 5 has a first surface 51 facing the cover plate 41, and since the refractive index of the cover plate 41 is smaller than that of the auxiliary control layer 5, the incident angle of the light at the first surface 51 is larger than the refraction angle, the design can reduce the propagation distance of the light in the first direction X, so that the light can avoid the photosensitive area PS with a larger area.
Referring to fig. 4, 6 and 7, in some embodiments, the light path adjusting layer has a first surface 33 facing the pixel defining layer 21, and an included angle between the sidewall 321 and the first surface 33 is α, where α 1 is ≦ α 2.
The light emitted from the light emitting unit 22 may be partially or totally reflected on the cover plate 41, and generally, the light reflected on the cover plate 41 may have a greater influence on the photosensitive area PS. Specifically, a part of the partially reflected light propagates to the outside by refraction, and another part is reflected back to the display panel. The light beams totally reflected are totally reflected back to the display panel, so the intensity of the light beams totally reflected back to the display panel is larger, and the influence on the photosensitive area PS is larger.
As shown in fig. 6, when the included angle α is α 1, the light reaching the sidewall 321 through total reflection exits along the thickness direction of the optical path control layer under the refraction effect of the sidewall 321.
As shown in fig. 7, when the included angle α is α 2, the light reaching the sidewall 321 through total reflection exits along the thickness direction of the light path adjusting layer under the reflection action of the sidewall 321.
As can be seen from the foregoing, the area where the light path adjusting part 32 is located can cover most of the photosensitive region PS, so that the light beam passing through the sidewall 321 and moving along the thickness direction of the light path adjusting layer can avoid most of the photosensitive region PS. Therefore, in the embodiment of the present application, the included angle α is set between α 1 and α 2, so that the light totally reflected by the cover plate 41 can gradually approach the area where the light emitting unit 22 is located in the first direction X through refraction or reflection of the side wall 321, thereby avoiding most of the photosensitive area PS, and reducing the influence of the light emitted by the light emitting unit 22 on the photosensitive effect of the photosensitive area PS.
Specifically, referring to fig. 4 and fig. 6, when the included angle α is α 1, it is necessary to satisfy both:
sin(α1-β)*n2＝sinα1*n1；
sinβ*n2＝1。
the calculation is integrated by two formulas:
wherein n is1Denotes a refractive index, n, of the optical path regulating layer2Denotes a refractive index of the auxiliary regulation layer 5, and β denotes a refraction angle at which light totally reflected via the cover plate 41 enters the auxiliary regulation layer 5 from the cover plate 41.
Referring to fig. 4 and fig. 7, when the included angle α is α 2, it needs to satisfy both:
sin(α2-β)*n2＝n1；
sinβ*n2＝1。
the calculation is integrated by two formulas:
referring to fig. 8 and 9, in some embodiments, the minimum distance between the sidewall 321 of the second opening 31 and the corresponding light emitting unit 22 in the first direction X is D, and the sidewall 321 is in a slope shape and forms an included angle α with the first surface 33, so that the distance between the sidewall 321 and the corresponding light emitting unit 22 in the first direction X is continuously changed along the light emitting direction of the light emitting unit 22. The minimum distance between the sidewall 321 of the second opening 31 and the corresponding light emitting unit 22 in the first direction X is a distance between an end point of the sidewall 321 closest to the light emitting unit 22 and an edge of the first opening 211 corresponding to the light emitting unit 22 along the first direction X. It is understood that the edge of the first opening 211 may be disposed in a slope shape, and the minimum distance between the sidewall 321 of the second opening 31 and the corresponding light emitting unit 22 in the first direction X refers to the distance between the end point of the sidewall 321 closest to the light emitting unit 22 and the end point of the sidewall 321 on the edge of the first opening 211 in the first direction X.
In the embodiment of the present application, when the included angle α is smaller than 90 °, the minimum distance between the sidewall 321 and the corresponding light emitting unit 22 in the first direction X is the distance between the end point of the sidewall 321 contacting the first surface 33 and the edge of the corresponding first opening 211 in the first direction X. When the included angle α is greater than 90 °, the minimum distance between the sidewall 321 and the corresponding light emitting unit 22 in the first direction X is the distance between the end point of the sidewall 321 away from the first surface 33 and the edge of the corresponding first opening 211 in the first direction X.
Alternatively, D1 ≦ D2; as shown in fig. 8, when the distance D is D1, the light emitted from one end of the light emitting unit 22 away from the sidewall 321 in the first direction X reaches the sidewall 321 through the total reflection of the cover plate 41; as shown in fig. 9, when the distance D is D2, the light emitted from the light emitting unit 22 in the first direction X near one end of the sidewall 321 reaches the sidewall 321 via the total reflection of the cover plate 41. Wherein the content of the first and second substances,
alpha denotes the angle between the side wall 321 and the first surface 33, thetacDenotes the critical angle of total reflection, n, of the cover plate 41cDenotes the refractive index, T, of the cover plate 411Indicates the thickness, T, of the optical path adjusting layer2Denotes a thickness of the auxiliary regulation layer 5, W denotes a length of the light emitting unit 22 in the first direction X; t isiThe respective thicknesses of the different film layers that are passed by the light emitting unit 22 during the process of emitting light to the cover plate 41; n isiIndicated as different layers passing through during the process of the light emitted from the light emitting unit 22 reaching the cover plate 41The respective refractive indices; t isjThe thickness of the different film layers is shown in the process that the light reaches the auxiliary regulating layer 5 after being totally reflected by the cover plate 41; n isjWhich represents the corresponding refractive index of the different layers through which the light passes in the process of reaching the auxiliary control layer 5 after being totally reflected by the cover plate 41.
Specifically, in the formula
L1, the moving distance of the light in the first direction X during the process of the light emitted from the light-emitting unit 22 reaching the cover plate 41, is shown in the formula
A value L2 represents a moving distance of the light in the first direction X during the process of moving the light to the auxiliary control layer 5 after the total reflection by the cover plate 41. In the formula (T)2-T1)tan(sin-1(nc*sinθc/n2) Is L3, represents the moving distance of the light in the first direction X during the light moving from the auxiliary control layer 5 to the sidewall 321. T in the formula1The length of the sidewall 321 in one direction is denoted by/tan α.
Note that, the letter m in the formula indicates the number of film layers on the light emitting unit 22 in the display panel, which is not limited in the present application. The letter q indicates the number of the film layers above the auxiliary control layer 5 in the display panel, which is not limited in the present application.
The embodiment of the application flexibly adjusts the minimum distance between the side wall 321 and the corresponding light-emitting unit 22 in the first direction X according to the film layer structure in the display panel, so that the light emitted by the light-emitting unit 22 and totally reflected by the cover plate 41 can accurately reach the position of the side wall 321, and the requirements of practical use are met.
In some embodiments, the included angle α between the sidewall 321 and the first surface 33 ranges from: alpha is more than or equal to 80 degrees and less than or equal to 100 degrees; the range of the minimum distance D between the sidewall 321 of the second opening 31 and the corresponding light emitting unit 22 in the first direction X is: alpha is more than or equal to 0 and less than or equal to 17 mu m.
In the embodiment of the present application, by controlling the size of the included angle between the sidewall 321 and the first surface 33, and the minimum distance between the sidewall 321 and the corresponding light-emitting unit 22 in the first direction X, the light emitted by the light-emitting unit 22 can reach the sidewall 321 of the light path adjusting and controlling portion 32 through the refraction of other films and the total reflection of the cover plate 41, and the propagation path of the light is changed through the refraction or reflection of the light path adjusting and controlling portion 32, so as to avoid part of the light-sensing region PS, and improve the light-sensing effect.
Referring to fig. 10 and 11, in some embodiments, along the first direction X, the minimum distance between the light emitting unit 22 and the sidewall 321 of the corresponding second opening 31 increases as the length of the light emitting unit 22 in the first direction X increases.
The light emitting cells 22 may include a red light emitting cell 221, a green light emitting cell 222, a blue light emitting cell 223, and the like, and the light emitting cells 22 of different colors are different in size, i.e., different in length in the first direction X. Alternatively, the length of the blue light-emitting unit 223 in the first direction X is greater than the length of the green light-emitting unit 222 in the first direction X, and the length of the green light-emitting unit 222 in the first direction X is greater than the length of the red light-emitting unit 221 in the first direction X. In this case, the distance D corresponding to the blue light emitting unit 223 is greater than the distance D corresponding to the green light emitting unit 222; the distance D corresponding to the green light-emitting unit 222 is greater than the distance D corresponding to the red light-emitting unit 221.
The light emitted from the light emitting unit 22 is not completely emitted vertically along the thickness direction of the display panel, and most of the light is emitted away from the display panel along a certain angle, so if the distance between the light emitting unit 22 and the light path adjusting part 32 in the first direction X is too close, the light path adjusting part 32 will affect the display effect of the display panel. The embodiment of the present application enables the distance between the light path adjusting part 32 and the light emitting unit 22 in the first direction X to be adaptively adjusted according to the length of different light emitting units 22 by setting the distance D to be increased along with the increase of the length of the light emitting unit 22 in the first direction X. The photosensitive effect of the display panel is improved, and meanwhile, the display panel is ensured to have a good display effect.
It should be noted that the color types and numbers of the light emitting units 22 and the sizes of the different light emitting units 22 can be adjusted according to the design requirements of the display panel, and thus are not limited to the examples of the above embodiments. Further, the arrangement between the light emitting units 22 of different colors is not limited to the examples of the above embodiments.
Referring to fig. 12, in some embodiments, along the first direction X, a distance between at least a portion of the photosensitive region PS and an adjacent light-emitting unit 22 is not less than a minimum distance between the light-emitting unit 22 and the sidewall 321 of the corresponding second opening 31.
As can be seen from the foregoing, by adjusting the size of the included angle between the sidewall 321 and the first surface 33, the light reaching the sidewall 321 through the total reflection of the cover plate 41 can gradually approach the area where the light emitting unit 22 is located in the first direction X under the refraction or reflection action of the sidewall 321. Therefore, in the embodiment of the present application, the distance between at least part of the photosensitive region PS and the adjacent light-emitting unit 22 is set to be not less than the distance D, so that at least part of the photosensitive region PS can be prevented from being affected by the light emitted by the light-emitting unit 22 and totally reflected by the cover plate 41, thereby reducing the light interference on the photosensitive region PS and further improving the photosensitive effect of the display panel.
Referring to fig. 13, in some embodiments, the light path adjusting part 32 includes at least two light path adjusting units 322 sequentially nested around the second opening 31, and the light path adjusting units 322 have a unit sidewall 323 facing the second opening 31 along the first direction X. The included angle between the cell sidewall 323 and the first surface 33 is α ', wherein the included angles α' corresponding to different light path adjusting units 322 are different.
The light path adjusting part 32 in the embodiment of the present application is composed of a plurality of light path adjusting units 322, and the plurality of light path adjusting units 322 are mutually nested in a surrounding manner and jointly surround the periphery of the second opening 31. The light path adjusting unit 322 has unit sidewalls 323, and each unit sidewall 323 can reflect and/or refract the light emitted from the light emitting unit 22. Different light path regulation and control unit 322 correspond unit lateral wall 323 and luminescence unit 22 are different at the distance on first direction X, consequently, reflect the inclination of the light to different unit lateral walls 323 from apron 41 and be different, this application will be different according to different unit lateral walls 323 and luminescence unit 22 distance on first direction X different, change the contained angle between different unit lateral walls 323 and first surface 33, so that the regulation light propagation path that light path regulation and control unit 322 can be better, improve display panel's sensitization effect.
In some embodiments, in the first direction X, the minimum distance between the cell sidewall 323 and the corresponding light emitting cell 22 in the first direction X is D ', and the included angle α ' and the distance D ' corresponding to any light path adjusting unit 322 satisfy:
n1indicating the refractive index of the optical path control layer, n2Denotes the refractive index, theta, of the auxiliary control layer 5cDenotes the critical angle of total reflection, n, of the cover plate 41cDenotes the refractive index, T, of the cover plate 411Indicates the thickness, T, of the optical path adjusting layer2Denotes a thickness of the auxiliary regulation layer 5, W denotes a length of the light emitting unit 22 in the first direction X; t isiThe respective thicknesses of the different film layers that are passed by the light emitting unit 22 during the process of emitting light to the cover plate 41; n isiExpressed as the respective refractive indexes of the different film layers that pass through during the process of the light emitted from the light emitting unit 22 reaching the cover plate 41; t isjThe thickness of the different film layers is shown in the process that the light reaches the auxiliary regulating layer 5 after being totally reflected by the cover plate 41; n isjWhich represents the corresponding refractive index of the different layers through which the light passes in the process of reaching the auxiliary control layer 5 after being totally reflected by the cover plate 41.
For the derivation process of the included angle α 'and the distance D' corresponding to the light path adjusting unit 322, please refer to the derivation process of the included angle α and the distance D in the foregoing embodiments, which is not described in detail in this embodiment.
Referring to fig. 14, in some embodiments, a distance between adjacent light-emitting units 22 in the first display area AA1 in the first direction X is greater than a distance between adjacent light-emitting units 22 in the second display area AA2 in the first direction X.
In order to increase the light transmittance of the first display region AA1, the pixel density (Pixels Per inc, PPI) in the first display region AA1 needs to be decreased such that the PPI is lower than that of the second display region AA 2. In the embodiment of the application, the distance between the adjacent light emitting units 22 in the first display area AA1 in the first direction X is increased, so that the PPI of the first display area AA1 is reduced, external light can enter the first display area AA1 more easily, and the photosensitive effect of the display panel is improved.
On the other hand, referring to fig. 15, an embodiment of the present application provides a display device including the display panel in any one of the foregoing embodiments. It can be understood that the display device provided in this embodiment has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel in each of the above embodiments, which is not repeated herein.
In some embodiments, the display device further includes a photosensitive element 7, the photosensitive element 7 is located in the first display area AA1 and is disposed on a side of the substrate 1 facing away from the light emitting device group 2, and the photosensitive element 7 receives external light through the photosensitive area PS. Alternatively, the photosensitive element 7 may be an image pickup device for picking up external image information. In other embodiments, the light sensing element 7 may also be an infrared sensor, a proximity sensor, an infrared lens, a floodlight sensing element, an ambient light sensor, a dot matrix projector, or other light sensor.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the corresponding processes in the foregoing method embodiments may be referred to for replacement of the other connection manners described above, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
Claims (13)
1. The utility model provides a display panel which characterized in that, includes first display area and second display area, the luminousness of first display area is greater than the luminousness of second display area, first display area includes the photosensitive region, display panel includes:
a substrate;
the light-emitting device group comprises a pixel defining layer and a plurality of light-emitting units, wherein the pixel defining layer is arranged on one side of the substrate and comprises a plurality of first openings, the light-emitting units correspond to the first openings, orthographic projections of the light-emitting units on the pixel defining layer are positioned in the first openings, and the light sensing areas and the first openings are at least partially not overlapped along the light emergent direction of the light-emitting units;
the light path regulation layer is arranged on one side, away from the substrate, of the light emitting device group and comprises a plurality of second openings located in the first display area and light path regulation parts distributed around the second openings, orthographic projections of the second openings on the pixel defining layer are at least partially overlapped with the first openings, and the light path regulation parts are provided with side walls facing the second openings;
the target optical film layer is arranged on one side, away from the light-emitting device group, of the light path regulation and control layer;
and the light rays emitted by the light emitting unit and reflected and refracted by the target optical film layer are adjusted to avoid part of the light sensing area to be emitted through the side wall.
2. The display panel according to claim 1, further comprising an auxiliary control layer disposed on a side of the light path control layer facing away from the substrate and at least partially covering the second opening, wherein a refractive index of the light path control layer is smaller than a refractive index of the auxiliary control layer.
3. The display panel of claim 2, wherein the target optical film layer comprises a cover plate disposed on a side of the auxiliary control layer facing away from the substrate, and wherein a refractive index of the cover plate is less than a refractive index of the auxiliary control layer.
4. The display panel according to claim 3, wherein the light path adjusting layer has a first surface facing the pixel defining layer, and the sidewall forms an angle α with the first surface, where α 1 ≦ α 2;
when the included angle alpha is alpha 1, light reaching the side wall through the total reflection of the cover plate is emitted along the thickness direction of the light path regulation layer under the refraction action of the side wall so as to avoid part of the photosensitive area;
when the included angle alpha is alpha 2, light reaching the side wall through the total reflection of the cover plate is emitted along the thickness direction of the light path regulation layer under the reflection action of the side wall so as to avoid part of the photosensitive area; wherein the content of the first and second substances,
n1denotes a refractive index, n, of the optical path regulating layer2Representing the refractive index of the auxiliary adjusting layer.
5. The display panel according to claim 4, wherein the sidewall faces the second opening along a first direction, and a minimum distance between the sidewall of the second opening and the corresponding light emitting unit in the first direction is D, wherein D1 ≦ D2;
when the distance D is D1, the light emitted from one end of the light emitting unit away from the side wall in the first direction reaches the side wall through the total reflection of the cover plate;
when the distance D is D2, the light emitted from one end of the light emitting unit close to the side wall in the first direction reaches the side wall through the total reflection of the cover plate; wherein the content of the first and second substances,
a denotes an angle between the side wall and the first surface, and θcRepresenting the critical angle of total reflection, n, of the cover platecRepresenting the refractive index, T, of the cover plate1Denotes the thickness, T, of the optical path adjusting layer2Represents a thickness of the auxiliary regulation layer, and W represents a length of the light emitting unit in the first direction; t isiExpressed as the corresponding thickness of different film layers passing through the process of the light emitted by the light-emitting unit reaching the cover plate; n isiExpressed as the corresponding refractive indexes of different film layers passing through in the process of the light emitted by the light-emitting unit reaching the cover plate; t isjThe thickness of the film layer is determined according to the thickness of the film layer, and the thickness of the film layer is determined according to the thickness of the film layer; n isjThe refractive indexes of different film layers passing through the process that light reaches the auxiliary regulation and control layer after passing through the cover plate in a total reflection mode are represented.
6. The display panel according to claim 5, wherein the included angle α between the sidewall and the first surface is in a range of: alpha is more than or equal to 80 degrees and less than or equal to 100 degrees;
the range of the minimum distance D between the side wall of the second opening and the corresponding light-emitting unit in the first direction is as follows: alpha is more than or equal to 0 and less than or equal to 17 mu m.
7. The display panel according to claim 5, wherein a minimum distance between the light emitting unit and the side wall of the corresponding second opening in the first direction increases as a length of the light emitting unit in the first direction increases.
8. The display panel according to claim 5, wherein a distance between at least a portion of the photosensitive region and an adjacent light-emitting unit is not less than a minimum distance between the light-emitting unit and the corresponding sidewall of the second opening along the first direction.
9. The display panel according to claim 3, wherein the light path regulating part includes at least two light path regulating units nested in sequence around the second opening, the light path regulating units having unit sidewalls facing the second opening in a first direction;
the light path regulating and controlling layer is provided with a first surface facing the pixel defining layer, and an included angle between the first surface and the side wall of the unit is alpha ', wherein the included angles alpha' corresponding to the light path regulating and controlling units are different.
10. The display panel according to claim 10, wherein a minimum distance between the cell sidewall and the corresponding light emitting cell in the first direction is D 'in the first direction'
The included angle alpha 'and the distance D' corresponding to any light path regulating unit both satisfy the following conditions:
n1denotes a refractive index, n, of the optical path regulating layer2Denotes the refractive index, theta, of the auxiliary control layercRepresenting the critical angle of total reflection, n, of the cover platecRepresenting the refractive index, T, of the cover plate1Denotes the thickness, T, of the optical path adjusting layer2Represents a thickness of the auxiliary regulation layer, and W represents a length of the light emitting unit in the first direction; t isiExpressed as the corresponding thickness of different film layers passing through the process of the light emitted by the light-emitting unit reaching the cover plate; n isiExpressed as the corresponding refractive indexes of different film layers passing through in the process of the light emitted by the light-emitting unit reaching the cover plate; t isjThe thickness of the film layer is determined according to the thickness of the film layer, and the thickness of the film layer is determined according to the thickness of the film layer; n isjThe refractive indexes of different film layers passing through the process that light reaches the auxiliary regulation and control layer after passing through the cover plate in a total reflection mode are represented.
11. The display panel according to claim 1, wherein a distance in a first direction between adjacent ones of the light emitting cells in the first display region is larger than a distance in the first direction between adjacent ones of the light emitting cells in the second display region,
wherein the sidewall faces the second opening in the first direction.
12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.
13. The display device according to claim 12, further comprising a photosensitive element located in the first display region and disposed on a side of the substrate facing away from the group of light-emitting devices, wherein the photosensitive element receives external light through the photosensitive region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149426.XA CN113921572A (en) | 2021-09-29 | 2021-09-29 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149426.XA CN113921572A (en) | 2021-09-29 | 2021-09-29 | Display panel and display device |
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| CN113921572A true CN113921572A (en) | 2022-01-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114975824A (en) * | 2022-05-18 | 2022-08-30 | 厦门天马显示科技有限公司 | Display panel and display device |
| CN115035807A (en) * | 2022-05-30 | 2022-09-09 | 深圳创维－Rgb电子有限公司 | Display device |
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2021
- 2021-09-29 CN CN202111149426.XA patent/CN113921572A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114975824A (en) * | 2022-05-18 | 2022-08-30 | 厦门天马显示科技有限公司 | Display panel and display device |
| CN115035807A (en) * | 2022-05-30 | 2022-09-09 | 深圳创维－Rgb电子有限公司 | Display device |
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