CN117769330A - Display panel and display device - Google Patents

Abstract

The embodiment of the application provides a display panel and a display device. The display panel includes a substrate, a pixel defining layer, a first light path adjusting layer, and a second light path adjusting layer. The pixel definition layer comprises a pixel definition part and a plurality of pixel openings, the first light path adjustment layer is enclosed to form a plurality of first openings, the first openings are filled with the second light path adjustment layer with high refractive index, and orthographic projection of the first openings on the pixel definition layer is located in the range of the pixel definition part. Through setting up a plurality of first openings at first light path adjustment layer, can effectively improve the product transmissivity, improve product light transmission district such as fingerprint identification sensitivity. And because the second light path adjusting layer with high refractive index is filled at the first opening, a plurality of total reflection interfaces are added, so that light rays with large visual angles can be reflected to small visual angles, and visual experience is improved.

Description

Display panel and display device

Technical Field

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

Background

In recent years, in order to improve the efficiency of an Organic Light Emitting Diode (OLED) display device and reduce the power consumption of the display, a Micro Lens Array (MLA) technology is introduced in the related art, so that total reflection is formed at the interface between a high refractive index film layer and a low refractive index film layer, and light with a small viewing angle is deflected to a front viewing angle, thereby improving the light extraction rate.

However, the MLA technique has a certain problem.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device, which solve the problem of transmittance reduction in the related art.

In a first aspect, a display panel is provided that includes a substrate, a pixel defining layer, a first light path adjusting layer, and a second light path adjusting layer.

The pixel definition layer is arranged on one side of the substrate and comprises a pixel definition part and a plurality of pixel openings formed by surrounding the pixel definition part. The first light path adjusting layer is positioned on one side of the pixel defining layer far away from the substrate, the first light path adjusting layer is enclosed to form a plurality of first openings, and orthographic projection of the first openings on the pixel defining layer is positioned in the pixel defining part. The second light path adjusting layer is positioned on one side of the first light path adjusting layer away from the substrate, and is filled with a plurality of first openings, the refractive index of the second light path adjusting layer is larger than that of the first light path adjusting layer, and the display panel comprises a light transmission area, and the plurality of first openings are at least positioned in the light transmission area.

With reference to the first aspect, in certain implementations of the first aspect, the light emitting device further includes a light emitting device layer including a plurality of light emitting devices, the light emitting devices being located within the pixel openings; the first light path adjusting layer also encloses and forms a plurality of second openings, the orthographic projection of the light emitting device on the substrate is positioned in the orthographic projection of the second openings on the substrate, and the second openings and the first openings are arranged at intervals.

With reference to the first aspect, in certain implementations of the first aspect, at least one first opening is disposed around a second opening.

With reference to the first aspect, in certain implementations of the first aspect, the light-transmitting region includes a fingerprint identification region.

With reference to the first aspect, in certain implementations of the first aspect, at least two first openings are included between two adjacent second openings.

With reference to the first aspect, in certain implementations of the first aspect, the widths of the at least two first openings are different in a direction of a line connecting centers of adjacent two light emitting devices.

With reference to the first aspect, in certain implementations of the first aspect, in a thickness direction of the substrate, a thickness of the first optical path adjustment layer surrounding to form the first opening is greater than or equal to a thickness of the first optical path adjustment layer surrounding to form the second opening.

With reference to the first aspect, in certain implementations of the first aspect, a shape of a cross section of the first opening along a direction perpendicular to a thickness direction of the substrate includes a rectangular, trapezoidal, triangular, circular, elliptical, annular, or irregular shape.

With reference to the first aspect, in certain implementations of the first aspect, a side surface of the second light path adjustment layer remote from the substrate and a side surface of the first light path adjustment layer remote from the substrate are flush.

With reference to the first aspect, in some implementations of the first aspect, the display panel further includes at least one thin film encapsulation layer between the pixel defining layer and the first light path adjusting layer.

With reference to the first aspect, in certain implementations of the first aspect, a spacing D between adjacent second opening centers in a direction of a line connecting adjacent two light emitting device centers satisfies 10 μm and D and 40 μm.

With reference to the first aspect, in certain implementations of the first aspect, a spacing D between adjacent second opening centers in a direction of a line connecting adjacent two light emitting device centers satisfies 20 μm d.ltoreq.30 μm.

With reference to the first aspect, in certain implementations of the first aspect, sidewalls of the first opening and the second opening are disposed obliquely with respect to the substrate.

With reference to the first aspect, in certain implementations of the first aspect, the sidewall of the first opening includes a first edge proximate to the substrate and a second edge distal from the substrate, a distance between an orthographic projection of the first edge on the substrate and a center of the orthographic projection of the first opening on the substrate being less than a distance between an orthographic projection of the second edge on the substrate and a center of the orthographic projection of the first opening on the substrate.

With reference to the first aspect, in certain implementations of the first aspect, the sidewall of the second opening includes a third edge near the substrate and a fourth edge remote from the substrate, a distance between an orthographic projection of the third edge on the substrate and an orthographic projection of a center of the light emitting device on the substrate being smaller than a distance between an orthographic projection of the fourth edge on the substrate and an orthographic projection of the center of the light emitting device on the substrate.

With reference to the first aspect, in certain implementations of the first aspect, a sidewall of the first optical path adjusting layer surrounding the first opening and the second opening includes a curved surface, a straight surface, or a broken line surface.

With reference to the first aspect, in certain implementations of the first aspect, the sidewall has an inclination angle θ with respect to the substrate that satisfies 50+.θ+.90 °.

With reference to the first aspect, in certain implementations of the first aspect, the sidewall inclination angle θ with respect to the substrate satisfies 50+.θ+.88 °.

With reference to the first aspect, in certain implementations of the first aspect, the tilt angles of different sidewalls of the same first opening with respect to the substrate are different, and/or the tilt angles of different sidewalls of the same second opening with respect to the substrate are different, and/or the tilt angles of different sidewalls of the first opening with respect to the substrate are different, and/or the tilt angles of different sidewalls of the second opening with respect to the substrate are different, and/or the tilt angles of the sidewalls of the first opening and the second opening with respect to the substrate are different.

In a second aspect, there is provided a display device comprising the display panel provided in any one of the above.

The embodiment of the application provides a display panel and a display device. The display panel includes a substrate, a pixel defining layer, a first light path adjusting layer, and a second light path adjusting layer. The pixel defining layer comprises a pixel defining part and a plurality of pixel openings formed by surrounding the pixel defining part, the first light path adjusting layer forms a plurality of first openings by surrounding the pixel defining part, the first openings are filled with the second light path adjusting layer with high refractive index, and orthographic projection of the first openings on the pixel defining layer is positioned in the pixel defining part.

Through setting up a plurality of first openings at first light path adjustment layer, can effectively reduce the probability that external light takes place the interface reflection in the second light path adjustment layer department of high refracting index, improve the product transmissivity, improve product light transmission district such as fingerprint identification sensitivity. And because the second light path adjusting layer with high refractive index is filled at the first opening, a plurality of total reflection interfaces are added, so that light rays with large visual angles can be reflected to small visual angles, and visual experience is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a top view of a display panel according to the related art.

Fig. 2 is a schematic cross-sectional view of the display panel at A-A' in fig. 1.

Fig. 3 is a top view of a display panel according to an embodiment of the present application.

Fig. 4 is a schematic cross-sectional view of the display panel at A-A' in fig. 3.

Fig. 5 is a schematic cross-sectional structure of a display panel according to another embodiment of the disclosure.

Fig. 6 is a top view of the display panel of the embodiment of fig. 5.

Fig. 7 is a schematic cross-sectional structure of a display panel according to another embodiment of the disclosure.

Fig. 8 is a schematic cross-sectional structure of a display panel according to another embodiment of the present application.

Fig. 9 is a top view of the display panel of the embodiment of fig. 8.

Detailed Description

Fig. 1 is a top view of a display panel according to the related art. Fig. 2 is a schematic cross-sectional view of the display panel at A-A' in fig. 1. As shown in fig. 1 and 2, the display panel includes a substrate 100, a pixel defining layer 200, a light emitting device layer 300, a first light path adjustment layer 400, and a second light path adjustment layer 500.

Specifically, the pixel defining layer 200 is disposed on the substrate 100 side, and includes a plurality of pixel openings 220 formed by surrounding the pixel defining portions 210 and the pixel defining portions 210. The light emitting device layer 300 includes a plurality of light emitting devices 310, and the light emitting devices 310 are located within the pixel openings 220. The first light path adjusting layer 400 is located at a side of the pixel defining layer 200 away from the substrate 100. The second optical path adjusting layer 500 is located at a side of the first optical path adjusting layer 400 away from the substrate 100, and the refractive index of the second optical path adjusting layer 500 is greater than that of the first optical path adjusting layer 400.

As shown in fig. 2, a contact portion of the second light path adjustment layer 500 with a high refractive index and the first light path adjustment layer 400 with a low refractive index forms a total reflection interface, wherein external light forms an interface reflection at an interface parallel to the substrate 100, so that the transmittance of a product is reduced, and the sensing capability of a light transmission area such as a fingerprint recognition sensor to the external light is poor, resulting in a problem of insensitivity of fingerprint recognition of a customer.

In view of this, the present application provides a display panel and a display device, by providing a plurality of openings in the first optical path adjusting layer 400, the probability of the external light being reflected at the interface of the second optical path adjusting layer with high refractive index is effectively reduced, the transmittance of the product is improved, and the light transmission area of the product such as fingerprint recognition sensitivity is improved.

Technical solutions in embodiments of the present application will be clearly and fully described in the following detailed description with reference to the accompanying drawings in embodiments of the present application, in which 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 showing an example of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure. Features and exemplary embodiments of various aspects of the present application are described in detail below.

Fig. 3 is a top view of a display panel according to an embodiment of the present application. Fig. 4 is a schematic cross-sectional view of the display panel at A-A' in fig. 3. Referring to fig. 4, the display panel includes a substrate 100, a pixel defining layer 200, a first light path adjusting layer 400, and a second light path adjusting layer 500.

The pixel defining layer 200 is disposed on one side of the substrate 100, and includes a pixel defining portion 210 and a plurality of pixel openings 220 formed around the pixel defining portion 210. The first light path adjusting layer 400 is located at a side of the pixel defining layer 200 away from the substrate 100, the first light path adjusting layer 400 encloses and forms a plurality of first openings 410, and a front projection of the first openings 410 on the pixel defining layer 200 is located in the pixel defining portion 210. The second light path adjusting layer 500 is located at a side of the first light path adjusting layer 400 away from the substrate 100, and the second light path adjusting layer 500 fills the plurality of first openings 410. And the refractive index of the second optical path adjustment layer 500 is greater than that of the first optical path adjustment layer 400. The display panel includes a light-transmitting region, and the plurality of first openings 410 are at least located in the light-transmitting region.

As shown in fig. 4, by providing a plurality of first openings 410 on the first optical path adjustment layer 400, the area of the contact interface between the first optical path adjustment layer 400 and the second optical path adjustment layer 500 is reduced in the direction parallel to the substrate 100, so that the probability of interfacial reflection of external light at the second optical path adjustment layer 500 with high refractive index can be effectively reduced, the product transmittance can be improved, the transparent area such as a fingerprint recognition sensor can more clearly recognize a fingerprint of a customer, and the product fingerprint recognition sensitivity can be improved.

In addition, since the second optical path adjusting layer 500 with a high refractive index is filled at the first opening 410, compared with fig. 2, two total reflection interfaces 4101 and 4102 are added in the light emitting direction, so that part of the light rays emitted from the large viewing angle (i.e. the angle between the emitting direction and the normal line of the display panel is larger) in fig. 2 are emitted after being totally reflected at the two total reflection interfaces 4101 and 4102 and deflected to the small viewing angle (i.e. the angle between the emitting direction and the normal line of the display panel is smaller).

Specifically, according to the principle of total reflection, as long as the incident angle of the outgoing light ray on the total reflection interfaces 4101 and 4102 is larger than the critical incident angle α, the light ray can be totally reflected at the interfaces, so as to change the outgoing direction, and make the included angle between the reflected light ray and the normal line of the display panel smaller, so as to become a light ray with a small viewing angle. Thus, the arrangement of the first opening 410 also facilitates reflecting more light from a large viewing angle to a small viewing angle, improving the visual experience.

In one embodiment, the display panel further includes a light emitting device layer 300, the light emitting device layer 300 including a plurality of light emitting devices 310, the light emitting devices 310 being located within the pixel openings 220.

In one embodiment, the first light path adjustment layer 400 further encloses a plurality of second openings 420, the orthographic projection of the light emitting device 310 on the substrate 100 is located in the orthographic projection of the second openings 420 on the substrate 100, the second openings 420 are spaced apart from the first openings 410, and at least one first opening 410 is disposed around the second openings 420. Specifically, a first opening 410 may be annular and disposed around a second opening 420, or a plurality of first openings 410 may be disposed around the second opening 420.

In one embodiment, the light transmissive region includes a fingerprint identification region. The application can effectively improve the light transmittance of the fingerprint identification area.

In one embodiment, as shown in fig. 3, the first and second openings 410 and 420 have rectangular shapes in cross section perpendicular to the thickness direction of the substrate 100. However, the shape of the first opening 410 is not limited to rectangular, and may be adapted according to the size of the space between the sub-pixels in practical application. Specifically, the first opening 410 may have a trapezoid, triangle, circle, oval, ring, or irregular shape in a cross section perpendicular to the thickness direction of the substrate 100. The arrangement is beneficial to improving the utilization rate of the display panel space.

In one embodiment, the shape of the cross section of the first opening 410 along the thickness direction of the substrate 100 may be a trapezoid, a triangle, a rectangle, an inverted trapezoid, or an irregular shape. In one embodiment, the shape of the cross section of the second opening 420 along the thickness direction of the substrate 100 may be a trapezoid, a triangle, a rectangle, an inverted trapezoid, or an irregular shape.

In an embodiment, the first opening 410 and the second opening 420 may be manufactured by using different patterns of the same mask, so, compared with the display panel in fig. 2 of the related art, although the display panel in fig. 4 is added with the first opening 410, the manufacturing process only needs to make corresponding improvement on the pattern of the mask, and no additional steps are needed, so that the manufacturing process is not complicated, and the practicability of the scheme is strong.

In one embodiment, the sidewalls of the first and second openings 410 and 420 are disposed obliquely with respect to the substrate. As shown in fig. 4, the sidewall of the first opening 410 includes a first edge 41011 near the substrate 100 and a second edge 41012 far from the substrate, and the distance between the orthographic projection of the first edge 41011 on the substrate 100 and the center of the orthographic projection of the first opening 410 on the substrate 100 is smaller than the distance between the orthographic projection of the second edge 41012 on the substrate 100 and the center of the orthographic projection of the first opening 410 on the substrate 100.

The sidewall of the second opening comprises a third edge 42013 against the substrate 100 and a fourth edge 42014 away from the substrate 100, the distance between the orthographic projection of the third edge 42013 on the substrate 100 and the orthographic projection of the center of the light emitting device 300 on the substrate 100 being smaller than the distance between the orthographic projection of the fourth edge 42014 on the substrate 100 and the orthographic projection of the center of the light emitting device 300 on the substrate 100.

By setting the oblique directions of the sidewalls of the first opening 410 and the second opening 420, the sidewalls of the first opening 410 and the sidewalls of the second opening 420 can deflect more light rays with large viewing angles emitted by the light emitting device 310 into light rays with small viewing angles, so that the visual experience is better improved.

In one embodiment, the sidewall of the first light path adjustment layer 400 surrounding the first and second openings 410 and 420 includes a curved surface, a straight surface, or a broken line surface.

In one embodiment, the inclination angle θ of the sidewall of the first opening 410 or the sidewall of the second opening 420 with respect to the substrate 100 satisfies 50 θ+.ltoreq.θ+.ltoreq.90 °.

In one embodiment, the first and second embodiments, preferably, the inclination angle θ of the sidewall of the first opening 410 or the sidewall of the second opening 420 with respect to the substrate 100 satisfies 50 θ+.ltoreq.θ+.ltoreq.88 °.

In one embodiment, different sidewalls of the same first opening 410 are at different tilt angles with respect to the substrate 100, and/or different sidewalls of the same second opening 420 are at different tilt angles with respect to the substrate 100, and/or different tilt angles of sidewalls of the different first openings 410 with respect to the substrate 100, and/or different tilt angles of sidewalls of the different second openings 420 with respect to the substrate 100, and/or different tilt angles of sidewalls of the first and second openings 410, 420 with respect to the substrate 100. By arranging the side walls with different openings to be different in inclination angles relative to the substrate, the side walls with different inclination degrees can be arranged according to the light emitting devices 310 with different colors, so that the emergent light rays with different colors and large viewing angles of the light emitting devices 310 can be deflected to different degrees, and the risk of color cast can be reduced.

Specifically, the values of the side walls of the first and second openings 410 and 420 with respect to the inclination angle with respect to the substrate 100 may be set according to the relative magnitudes of the refractive indexes of the first and second optical path adjustment layers 400 and 500. Preferably, the sidewalls of the first and second openings 410 and 420 may be disposed at an inclination angle between 70 ° -80 ° with respect to the substrate 100. Preferably, the sidewall inclination angle corresponding to the blue sub-pixel may be set to be larger than the sidewall inclination angles corresponding to the red sub-pixel and the green sub-pixel.

In one embodiment, the first optical path adjusting layer 400 may be a low refractive index optical cement. The second optical path adjusting layer may be a high refractive index optical paste, for example, inorganic high refractive index particles may be added to the organic system to increase the refractive index thereof.

In one embodiment, the display panel further includes a thin film encapsulation layer between the pixel defining layer 200 and the first light path adjusting layer 400 for encapsulating the light emitting device 310 to prevent water oxygen in the external environment from corroding the light emitting layer in the light emitting device 310, thereby making the service life of the light emitting device 310 longer. The thin film encapsulation layer may further include a first inorganic encapsulation layer 610, a second organic encapsulation layer 620, and a third inorganic encapsulation layer 630 sequentially stacked on a side of the light emitting device 310 remote from the substrate 100. The first and third inorganic encapsulation layers 610 and 630 function to block external water and ions, and the second organic encapsulation layer 620 may be fabricated by a coating or inkjet printing process to function as planarization.

In one embodiment, the light emitting device 310 includes a cathode layer 311 between the pixel defining layer 200 and the thin film encapsulation layer, a light emitting unit 312 between the substrate 100 and the pixel defining layer 200, and an anode layer 313 between the substrate 100 and the light emitting unit 312. The light emitting units include a red light emitting unit, a green light emitting unit and a blue light emitting unit. In addition, the substrate 100 further includes an array substrate and a substrate sequentially stacked on a side of the pixel defining layer 200 away from the cathode layer 311, which are both of a conventional structure and are not shown in the drawings.

In one embodiment, the material of the pixel defining layer 200 is an inorganic dielectric material, such as SIN (silicon nitride), SIO (silicon oxide), or the like, or the material of the pixel defining layer 200 is an organic photoresist material, or the like.

Fig. 5 is a schematic cross-sectional structure of a display panel according to another embodiment of the disclosure. Fig. 6 is a top view of the display panel of fig. 5. In comparison with fig. 4, two first openings 410 are included between two adjacent second openings 420 in fig. 5, and the orthographic projections of the two first openings 410 on the pixel defining layer 200 are located in the pixel defining portion 210. Two first openings 410 are surrounded on both sides of the second opening 420.

Since two first openings 410 are included between two adjacent second openings 420, compared with fig. 4, two total reflection interfaces are added in the light emitting direction, so that part of the emergent light rays with a large viewing angle in fig. 4 can be further deflected to a small viewing angle, the quantity of the emergent light rays with the small viewing angle is increased, and the visual experience is further improved.

In one embodiment, the width of the first light path adjustment layer 400 surrounding the first opening 410 may be smaller than the width of the first light path adjustment layer 400 surrounding the second opening 420 in fig. 4, which may be disposed in a direction from the center of the first opening 410 toward the center of the second opening 420. In this way, in the direction parallel to the substrate 100, the area of the contact interface between the first optical path adjusting layer 400 and the second optical path adjusting layer 500 is not increased, so that the probability of interface reflection of external light at the second optical path adjusting layer 500 with high refractive index can be effectively reduced, the transmittance of the product is improved, and the light transmission area of the product such as fingerprint recognition sensitivity is improved.

In one embodiment, the widths of at least two first openings 410 are different in a direction of a line connecting centers of adjacent two light emitting devices 310. Specifically, since the attenuation degree of the light of different colors is different, for example, the intensity attenuation of the light of the red wavelength (about 620nm to 625 nm) is smaller than the intensity attenuation of the light of the green wavelength (about 515nm to 530 nm) and the blue wavelength (about 450nm to 470 nm) in the process of shifting from the front view angle to the small view angle, the widths of at least two first openings 410 between two adjacent second openings 420 may be set to be different according to the difference of the emission colors of the light emitting devices 310 adjacent to the first openings 410, thereby further improving the visual effect.

In one embodiment, in the thickness direction of the substrate 100, the thickness of the first light path adjustment layer 400 surrounding the first opening 410 is greater than or equal to the thickness of the first light path adjustment layer 400 surrounding the second opening 420. In practical applications, the thickness of the first optical path adjusting layer 400 surrounding the first opening 410 is greater than or equal to the thickness of the first optical path adjusting layer 400 surrounding the second opening 420, for the first opening 410 not adjacent to the second opening 420. This arrangement facilitates total reflection of more light rays from a large viewing angle at the side walls of the first opening 410, and deflection to a small viewing angle, thereby further improving the visual effect.

In one embodiment, a side surface of the second light path adjustment layer 500 away from the substrate 100 and a side surface of the first light path adjustment layer 400 away from the substrate 100 may be disposed to be flush, as particularly shown in fig. 7. Fig. 7 is a schematic cross-sectional structure of a display panel according to another embodiment of the disclosure. By the arrangement, the thickness of the first light path adjusting layer 400 surrounding the first opening 410 and the second opening 420 is increased without increasing the overall thickness of the display panel, so that more light rays with a large viewing angle can be deflected to a small viewing angle at the side wall, and the visual effect is improved.

In one embodiment, at least two first openings 410 are included between two adjacent second openings 420. I.e., a plurality of first openings 410 are included between two adjacent second openings 420, as shown in fig. 8. Fig. 8 is a schematic cross-sectional structure of a display panel according to another embodiment of the present application, and fig. 9 is a top view of the display panel shown in fig. 8. In comparison with fig. 5, in fig. 8, three first openings 410 are included between two adjacent second openings 420, and orthographic projections of the three first openings 410 on the pixel defining layer 200 are all located in the pixel defining portion 210. The second opening 420 surrounds three first openings 410 on each side.

Since the three first openings 410 are disposed between two adjacent second openings 420, compared with fig. 5, two total reflection interfaces are added in the light emitting direction, so that part of the light emitted from the large viewing angle in fig. 5 can be further deflected to the small viewing angle, thereby increasing the amount of the light emitted from the small viewing angle and further improving the visual experience.

In one embodiment, the widths of the three first openings 410 may not be exactly the same in the direction of the line connecting the centers of the adjacent two light emitting devices 310. Specifically, the widths of the three first openings 410 between the adjacent two second openings 420 may be set to be different according to the difference in the emission colors of the light emitting devices 310 adjacent to the first openings 410, thereby further improving the visual effect.

In one embodiment, the distance D between adjacent second opening centers in the direction of the line connecting the centers of adjacent two light emitting devices satisfies 10 μm.ltoreq.D.ltoreq.40 μm.

In one embodiment, it is preferable that the distance D between the centers of adjacent second openings in the direction of the line connecting the centers of adjacent two light emitting devices satisfies 20 μm.ltoreq.D.ltoreq.30 μm.

In one embodiment, more than three first openings 410 may also be included between two adjacent second openings 420. However, the minimum width of the first optical path adjusting layer 400 surrounding the first and second openings 410 and 420 is 5 μm in consideration of the minimum size allowed by the mask technology in the actual manufacturing process. Further, according to the range of the distance D between the centers of the adjacent second openings, it is preferable that the number of the first openings 410 between the adjacent two second openings 420 is not more than five from the practical point of view.

The embodiment of the application also provides a display device, which includes any one of the display panels mentioned above, and specifically may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

The display device has higher transmittance and more sensitive fingerprint identification of a client; and the display device has higher light-emitting brightness, smaller color cast, better display effect and better user experience in a small visual angle.

It should be noted that, the display device includes other necessary components and components besides the display module structure, for example, a television, specifically, for example, a housing, a circuit board, a power cord, etc., and the worker in the field can correspondingly supplement according to the specific use requirement of the electronic device, which is not described herein.

It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may be present. In addition, it will be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intervening layer or element may also be present. Like reference numerals refer to like elements throughout.

Additionally, 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. Moreover, 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 like elements in a process, method, article, or apparatus that comprises an element.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A display panel, comprising:

a substrate;

the pixel definition layer is arranged on one side of the substrate and comprises a pixel definition part and a plurality of pixel openings formed by surrounding the pixel definition part;

the first light path adjusting layer is positioned on one side, far away from the substrate, of the pixel defining layer, a plurality of first openings are formed by surrounding the first light path adjusting layer, and orthographic projections of the first openings on the pixel defining layer are positioned in the pixel defining part; and

the second light path adjusting layer is positioned on one side of the first light path adjusting layer away from the substrate and fills the plurality of first openings, and the refractive index of the second light path adjusting layer is larger than that of the first light path adjusting layer;

the display panel comprises a light transmission area, and the plurality of first openings are at least positioned in the light transmission area.

2. The display panel of claim 1, further comprising a light emitting device layer comprising a plurality of light emitting devices, the light emitting devices being located within the pixel openings;

the first light path adjusting layer is also surrounded to form a plurality of second openings, the orthographic projection of the light emitting device on the substrate is positioned in the orthographic projection of the second openings on the substrate, and the second openings and the first openings are arranged at intervals;

preferably, at least one of said first openings is disposed around said second opening;

preferably, the light-transmitting region includes a fingerprint recognition region.

3. The display panel of claim 2, wherein at least two of the first openings are included between two adjacent of the second openings;

preferably, the widths of at least two of the first openings are different in a direction of a line connecting centers of two adjacent light emitting devices.

4. The display panel according to claim 3, wherein a thickness of the first light path adjustment layer surrounding the first opening is greater than or equal to a thickness of the first light path adjustment layer surrounding the second opening in a thickness direction of the substrate.

5. The display panel according to claim 1, wherein a shape of a cross section of the first opening in a direction perpendicular to a thickness direction of the substrate includes a rectangular shape, a trapezoidal shape, a triangular shape, a circular shape, an elliptical shape, a ring shape, or an irregular shape;

preferably, a side surface of the second light path adjustment layer away from the substrate is flush with a side surface of the first light path adjustment layer away from the substrate.

6. The display panel according to claim 2, wherein a distance D between adjacent ones of the second opening centers satisfies 10 μm and D and 40 μm in a direction of a line connecting centers of adjacent two of the light emitting device centers;

preferably, in the direction of the connecting line between the centers of two adjacent light emitting devices, the distance D between the centers of two adjacent second openings is 20 μm or less and is 30 μm or less;

preferably, the display panel further includes at least one thin film encapsulation layer between the pixel defining layer and the first light path adjusting layer.

7. The display panel of claim 2, wherein sidewalls of the first and second openings are disposed obliquely with respect to the substrate;

preferably, the side wall of the first opening comprises a first edge close to the substrate and a second edge far away from the substrate, and the distance between the orthographic projection of the first edge on the substrate and the center of the orthographic projection of the first opening on the substrate is smaller than the distance between the orthographic projection of the second edge on the substrate and the center of the orthographic projection of the first opening on the substrate;

preferably, the side wall of the second opening comprises a third edge close to the substrate and a fourth edge far away from the substrate, and the distance between the orthographic projection of the third edge on the substrate and the orthographic projection of the center of the light emitting device on the substrate is smaller than the distance between the orthographic projection of the fourth edge on the substrate and the orthographic projection of the center of the light emitting device on the substrate;

preferably, the side wall of the first optical path adjusting layer surrounding the first opening and the second opening includes a curved surface, a straight surface, or a fold line surface.

8. The display panel according to claim 7, wherein a tilt angle θ of the sidewalls of the first and second openings with respect to the substrate satisfies 50 ° - θ -90 °;

the inclination angle theta of the side walls of the first opening and the second opening relative to the substrate satisfies 50 DEG-theta-88 deg.

9. The display panel according to claim 7, wherein the tilt angles of different side walls of the same first opening with respect to the substrate are different, and/or the tilt angles of different side walls of the same second opening with respect to the substrate are different, and/or the tilt angles of different side walls of the first opening with respect to the substrate are different, and/or the tilt angles of different side walls of the second opening with respect to the substrate are different, and/or the tilt angles of the side walls of the first opening and the second opening with respect to the substrate are different.

10. A display device comprising the display panel of any one of claims 1-9.