A display panel and a display device

Abstract

This application provides a display panel and a display device, relating to the field of display technology. The display panel includes: a substrate; a backlight layer disposed on one side of the substrate and including a plurality of light-emitting devices; a quantum dot defining layer disposed on the side of the backlight layer away from the substrate, the quantum dot defining layer defining a plurality of spaced quantum dot openings, the quantum dot openings containing quantum dot layers corresponding to the light-emitting devices; and an organic layer disposed inside the plurality of quantum dot openings, the organic layer being disposed between the backlight layer and the quantum dot layers.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel and a display device. Background Technology

[0002] In recent years, display technologies have flourished, with QD-OLED, a next-generation display technology based on AMOLED, finding increasingly widespread application. The biggest difference between QD-OLED and traditional OLED lies in its use of quantum dot technology. The unique nanostructure of quantum dots enables them to emit purer, more saturated colors. Furthermore, because the luminescent properties of quantum dot materials can be designed to meet specific needs, the brightness of QD-OLED has been significantly improved.

[0003] However, existing QD-OLED structures rely on blue backlight OLEDs to excite quantum dot materials for display. In this structure, the quantum dot materials are excited not only by the blue backlight directly below them but also by the blue backlights of adjacent pixels, leading to optical crosstalk. Therefore, preventing optical crosstalk between adjacent sub-pixels in a display panel has become a pressing issue in this field. Summary of the Invention

[0004] This application provides a display panel and a display device, which aims to solve the problem of optical crosstalk between adjacent sub-pixels in the display panel.

[0005] A first aspect of this application provides a display panel, the display panel comprising:

[0006] Substrate;

[0007] A backlight layer, disposed on one side of the substrate, includes multiple light-emitting devices;

[0008] A quantum dot defining layer is disposed on the side of the backlight layer away from the substrate. The quantum dot defining layer defines a plurality of quantum dot openings spaced apart. A quantum dot layer corresponding to the light-emitting device is disposed within each quantum dot opening.

[0009] An organic layer is disposed inside the plurality of quantum dot openings and between the backlight layer and the quantum dot layer.

[0010] In one optional embodiment, the quantum dot layer includes a first quantum dot layer and a second quantum dot layer disposed adjacent to each other, the light-emitting device includes a first light-emitting device disposed corresponding to the first quantum dot layer, and the quantum dot opening includes a first opening disposed in the second quantum dot layer;

[0011] The organic layer is located on the side of the surface facing away from the substrate, on the side where the maximum angle of light emitted by the first light-emitting device enters the first opening and faces away from the substrate.

[0012] In one alternative embodiment, the thickness of the organic layer along the first direction is greater than or equal to the first light limit distance;

[0013] The first illumination limit distance is the maximum distance between the first light ray and the second light ray along the first direction within the first opening. The first light ray is the light ray with the maximum angle that the first light-emitting device enters into the first opening, and the second light ray is the light ray with the minimum angle that the first light-emitting device enters into the first opening. The first direction is the arrangement direction of the substrate and the backlight layer.

[0014] In one optional implementation, the display panel further includes:

[0015] A pixel definition layer is disposed between the substrate and the quantum dot definition layer. The pixel definition layer defines a plurality of pixel openings that are spaced apart. The pixel openings correspond one-to-one with the quantum dot openings, and the light-emitting device is disposed within the pixel openings.

[0016] In one optional embodiment, the quantum dot definition layer includes a first quantum dot definition layer and a second quantum dot definition layer disposed adjacent to each other, the first quantum dot definition layer being disposed between the first quantum dot layer and the second quantum dot layer, and the second quantum dot definition layer being disposed on the side of the first quantum dot definition layer away from the first quantum dot layer.

[0017] The pixel definition layer includes a first pixel definition layer that is configured corresponding to the first quantum dot definition layer;

[0018] The first ray passes through the first edge and the second edge, and the second ray passes through the first edge and the third edge;

[0019] Wherein, the first edge is the edge of the first pixel definition layer that is close to the first light-emitting device and far away from the substrate, the second edge is the edge of the second quantum dot definition layer that is close to both the substrate and the first light-emitting device, and the third edge is the edge of the first quantum dot definition layer that is close to the substrate and far away from the first light-emitting device.

[0020] In one optional embodiment, the thickness of the organic layer along a first direction is greater than or equal to 5 micrometers and less than or equal to 16 micrometers, where the first direction is the arrangement direction of the substrate and the backlight layer.

[0021] In one alternative embodiment, the display panel further includes a planarization layer disposed between the organic layer and the backlight layer, wherein the refractive index of the organic layer is less than that of the planarization layer.

[0022] In one alternative embodiment, the refractive index of the organic layer is less than or equal to 1.5%.

[0023] In one optional implementation, the height of the pixel definition layer along a first direction is less than or equal to 1.5 micrometers, where the first direction is the arrangement direction of the substrate and the backlight layer.

[0024] In one alternative embodiment, the display panel further includes a first light-shielding layer disposed between the pixel definition layer and the quantum dot definition layer;

[0025] The orthographic projection of the first light-shielding layer on the substrate is located inside the orthographic projection of the pixel definition layer on the substrate, or the orthographic projection of the first light-shielding layer on the substrate coincides with the orthographic projection of the pixel definition layer on the substrate.

[0026] In one alternative embodiment, at least a portion of the first light-shielding layer is disposed in the path of light emitted by the first light-emitting device into the first opening.

[0027] In one optional embodiment, the quantum dot definition layer includes a first quantum dot definition layer and a second quantum dot definition layer disposed adjacent to each other, the first quantum dot definition layer being disposed between the first quantum dot layer and the second quantum dot layer, and the second quantum dot definition layer being disposed on the side of the first quantum dot definition layer away from the first quantum dot layer.

[0028] The pixel definition layer includes a first pixel definition layer that is configured corresponding to the first quantum dot definition layer;

[0029] In the first direction, the thickness of the first light-shielding layer is greater than or equal to the second light-limiting distance, which is the maximum distance on the target plane from the light emitted by the first light-emitting device toward the first opening to the surface of the first pixel definition layer away from the substrate, and the target plane is the plane on the side of the first light-shielding layer near the first light-emitting device.

[0030] In one optional embodiment, the second illumination limit distance is the distance from the third ray emitted by the first light-emitting device on the target plane to the surface of the first pixel definition layer facing away from the substrate.

[0031] The third ray passes through a third edge and a fourth edge. The third edge is the edge of the first quantum dot defining layer that is close to the substrate and far from the first light-emitting device. The fourth edge is the edge of the first light-emitting device that is far from the first quantum dot defining layer.

[0032] A second aspect of this application provides a display panel, the display panel comprising:

[0033] Substrate;

[0034] A backlight layer, disposed on one side of the substrate, includes multiple light-emitting devices;

[0035] A quantum dot defining layer is disposed on the side of the backlight layer away from the substrate. The quantum dot defining layer defines a plurality of quantum dot openings spaced apart. A quantum dot layer corresponding to the light-emitting device is disposed within each quantum dot opening.

[0036] A pixel definition layer is disposed between the substrate and the quantum dot definition layer. The pixel definition layer defines a plurality of pixel openings that are spaced apart. The pixel openings correspond one-to-one with the quantum dot openings. The light-emitting device is disposed within the pixel opening.

[0037] A second light-shielding layer is disposed between the pixel definition layer and the quantum dot definition layer;

[0038] The orthographic projection of the second light-shielding layer on the substrate is located inside the orthographic projection of the pixel definition layer on the substrate, or the orthographic projection of the second light-shielding layer on the substrate coincides with the orthographic projection of the pixel definition layer on the substrate.

[0039] A third aspect of this application provides a display device, the display device comprising a display panel as described in any one of the first aspects of this application, or the display device comprising a display panel as described in the second aspect of this application.

[0040] Beneficial effects:

[0041] This application provides a display panel and a display device. The display panel includes: a substrate; a backlight layer disposed on one side of the substrate and including a plurality of light-emitting devices; a quantum dot definition layer disposed on the side of the backlight layer away from the substrate, the quantum dot definition layer defining a plurality of spaced-apart quantum dot openings, and a quantum dot layer corresponding to the light-emitting devices disposed within each quantum dot opening; and an organic layer disposed inside the plurality of quantum dot openings, between the backlight layer and the quantum dot layer. This application provides an organic layer located on the side of the quantum dot layer closer to the light-emitting devices. Incident light from surrounding pixels, after passing through the organic layer, will not illuminate the quantum dot layer but will be absorbed by the quantum dot definition layer surrounding the quantum dot layer. This ensures that the quantum dot layer is only excited by incident light emitted from its corresponding light-emitting devices, effectively preventing optical crosstalk between adjacent pixels. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of a display panel with an organic layer according to an embodiment of this application;

[0044] Figure 2 This is a schematic diagram of a structure comprising an organic layer and a first light-shielding layer according to an embodiment of this application;

[0045] Figure 3 This is a schematic diagram of the structure of a display panel with a second light-shielding layer according to an embodiment of this application.

[0046] Explanation of reference numerals in the attached figures: 11, Substrate; 12, Pixel definition layer; 121, First pixel definition layer; 13, Light-emitting device; 131, First light-emitting device; 14, Planarization layer; 15, Quantum dot definition layer; 151, First quantum dot definition layer; 152, Second quantum dot definition layer; 16, Quantum dot layer; 161, First quantum dot layer; 162, Second quantum dot layer; 31, First encapsulation layer; 32, Second encapsulation layer; 33, Third encapsulation layer; 41, Organic layer; 51, First light-shielding layer; 52, Second light-shielding layer; a, First ray; b, Second ray; c, Third ray. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] In the accompanying drawings, the size of constituent elements, the thickness of layers, or areas may sometimes be exaggerated for clarity. Therefore, any implementation of this disclosure is not necessarily limited to the dimensions shown in the drawings, and the shapes and sizes of the components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and any implementation of this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0049] In recent years, display technologies have flourished, with QD-OLED, a next-generation display technology based on AMOLED, finding increasingly widespread application. The biggest difference between QD-OLED and traditional OLED lies in its use of quantum dot technology. The unique nanostructure of quantum dots enables them to emit purer, more saturated colors. Furthermore, because the luminescent properties of quantum dot materials can be designed to meet specific needs, the brightness of QD-OLED has been significantly improved.

[0050] In existing QD-OLED structure solutions, a blue backlight OLED layer needs to be deposited on the BP circuit first. After encapsulating the backlight layer, a definition layer for the quantum dot material is photolithographically formed above the encapsulation layer. Finally, the quantum dot material is retained in the corresponding positions using photolithography or printing. Photoluminescent quantum dot materials can emit corresponding colors when excited by blue light.

[0051] However, the existing QD-OLED structure uses a blue backlight OLED to excite quantum dot materials to emit light and present the display effect. In this structure, the quantum dot materials are not only excited by the blue backlight directly below, but also by the blue backlight under the adjacent pixels, which leads to optical crosstalk.

[0052] In view of this, embodiments of this application propose a display panel, Figure 1 This application provides a schematic diagram of the structure of a display panel with an organic layer according to an embodiment of the present application. Figure 1 As shown, the display panel includes: a substrate 11; a backlight layer disposed on one side of the substrate 11 and including a plurality of light-emitting devices 13; and a quantum dot definition layer 15 disposed on the side of the backlight layer away from the substrate 11, the quantum dot definition layer 15 defining a plurality of quantum dot openings spaced apart, and a quantum dot layer 16 disposed within the quantum dot openings corresponding to the light-emitting devices 13.

[0053] In some optional embodiments, the substrate 11 includes, but is not limited to, a glass substrate, a plastic substrate, or other rigid or flexible substrates. A driving backplane is disposed on the substrate 11, and the driving backplane includes driving diodes and driving circuitry.

[0054] In some optional embodiments, the light-emitting device 13 is a blue electroluminescent device, configured to emit blue light toward the quantum dot layer 16, and the quantum dot layer 15 is configured to convert the blue light emitted by the light-emitting device 13 into light of other colors. Optionally, the light-emitting device 13 includes a first electrode layer, a light-emitting layer, and a second electrode layer stacked together, wherein one of the first electrode layer and the second electrode layer is an anode and the other is a cathode; furthermore, the light-emitting device 13 may further include an electron functional layer and / or a hole functional layer.

[0055] In some optional embodiments, the hole functional layer includes at least a hole transport layer (HTL), and other functional layers may be added to modify the hole functional layer, such as a hole injection layer (HIL) and an electron block layer (EBL). The hole injection layer is disposed on one side of the anode; the hole transport layer is disposed on the side of the hole injection layer opposite to the anode; and the electron block layer is disposed on the side of the hole transport layer opposite to the anode. The electronic functional layer includes at least an electron transport layer (ETL), and other functional layers may be added to modify the electronic functional layer, such as an electron injection layer (EIL) and a hole block layer (HBL). The hole block layer is disposed on the side of the light-emitting layer opposite to the anode; the electron transport layer is disposed on the side of the hole block layer opposite to the anode; and the electron injection layer is disposed on the side of the electron transport layer opposite to the anode.

[0056] It should be noted that, except for the anode layer, all other functional film layers of the light-emitting device 13 can be formed using an open photomask to reduce costs. However, the light-emitting device 13 can still be individually controlled to emit light via a thin-film transistor connected to the anode. Therefore, the light-emitting device 13 can still be considered as multiple independent light-emitting devices. The light-emitting device 13 described in the embodiments of this application refers to the independent light-emitting device corresponding to each quantum dot layer 16.

[0057] In some optional embodiments, the display panel further includes a pixel definition layer 12 disposed between the substrate 11 and the quantum dot definition layer 15. The pixel definition layer 12 defines a plurality of spaced-apart pixel openings, each corresponding to a quantum dot opening. The light-emitting device 13 is disposed within each pixel opening. Optionally, the height of the pixel definition layer 12 along the first direction is less than or equal to 1.5 micrometers.

[0058] In this embodiment, the light emitted by the light-emitting device 13 not only strikes the quantum dot layer 16 corresponding to the light-emitting device 13 along a first direction, but also strikes adjacent quantum dot layers 16, causing the adjacent quantum dot layers 16 to be excited and generating optical crosstalk. The first direction is the arrangement direction of the substrate 11 and the backlight layer. This is because the distance between the quantum dot layer 16 and the light-emitting device 13 along the first direction is small, and the light striking the adjacent quantum dot layer 16 can reach the adjacent quantum dot layer 16 within the optical path range limited by the pixel definition layer 12 and the quantum dot definition layer 15. Therefore, in this embodiment, as... Figure 1 As shown, the display panel also includes an organic layer 41, which is disposed inside the plurality of quantum dot openings and between the backlight layer and the quantum dot layer 16.

[0059] In this embodiment, by setting the organic layer 41 between the quantum dot layer 16 and the light-emitting device 13, the distance between the quantum dot layer 16 and the light-emitting device 13 along the first direction is increased. When the light emitted by the light-emitting device 13 propagates toward the quantum dot layer 16 corresponding to the light-emitting device 13 along the first direction, the light emitted by the light-emitting device 13 passes through the organic layer 41 and reaches the quantum dot layer 16 corresponding to the light-emitting device 13, thereby exciting the quantum dot layer 16 corresponding to the light-emitting device 13. When the light emitted by the light-emitting device 13 propagates toward the adjacent quantum dot layer 16, the propagation angle of the light is limited by the pixel definition layer 12 and the quantum dot definition layer 15, and it also needs to pass through the organic layer 41. The light entering the organic layer 41 directly irradiates the sidewall of the quantum dot definition layer 15 and is absorbed by the quantum dot definition layer 15, so it will not irradiate the adjacent quantum dot layer 16, avoiding the excitation of the adjacent quantum dot layer 16 and effectively preventing optical crosstalk.

[0060] In some optional embodiments, to ensure that the light emitted by the light-emitting device 13 does not illuminate the adjacent quantum dot layer 16 and to completely prevent optical crosstalk, it is necessary to ensure that the surface of the organic layer 41 facing away from the substrate 11 is higher than the maximum angle of light emitted by the light-emitting device 13 towards the adjacent quantum dot layer 16, so that the maximum angle light still does not pass through the organic layer 41, but is absorbed by the sidewall of the quantum dot defining layer 15 within the organic layer 41. Specifically, as... Figure 1 As shown, the quantum dot layer 16 includes a first quantum dot layer 161 and a second quantum dot layer 162 disposed adjacent to each other, the light-emitting device 13 includes a first light-emitting device 131 disposed corresponding to the first quantum dot layer 161, the quantum dot opening includes a first opening disposed in the second quantum dot layer 162; the organic layer 41 is located on the side surface away from the substrate 11, and the side on which the maximum angle light rays of the first light-emitting device 131 enter the first opening are away from the substrate 11.

[0061] In some optional embodiments, to ensure that the light emitted by the first light-emitting device 131 does not illuminate the second quantum dot layer 162 and to completely prevent optical crosstalk, the thickness of the formed organic layer 41 needs to ensure that the light emitted by the first light-emitting device 131 does not pass through the organic layer 41. Specifically, since the light emitted by the first light-emitting device 131 is restricted by the pixel definition layer 12 and the quantum dot definition layer 15 and can only enter the organic layer 41 at a certain angle, the thickness of the organic layer 41 along the first direction is greater than or equal to the first illumination limit distance. This ensures that the light path of the light entering the first opening does not pass through the organic layer 41, thus preventing optical crosstalk. The first illumination limit distance is the maximum distance between the first ray a and the second ray b along the first direction within the first opening. The first ray a is the ray with the largest angle entering the first opening from the first light-emitting device 131, and the second ray b is the ray with the smallest angle entering the first opening from the first light-emitting device 131.

[0062] In some alternative implementations, the range of the light path from the first light-emitting device 13 to the first opening, confined by the pixel definition layer 12 and the quantum dot definition layer 15, can be determined based on the first ray a and the second ray b. Specifically, the quantum dot definition layer 15 includes a first quantum dot definition layer 151 and a second quantum dot definition layer 152 disposed adjacent to each other. The first quantum dot definition layer 151 is disposed between the first quantum dot layer 161 and the second quantum dot layer 162, and the second quantum dot definition layer 152 is disposed on the side of the first quantum dot definition layer 151 away from the first quantum dot layer 161. The pixel definition layer 12 includes a first pixel definition layer 121 disposed corresponding to the first quantum dot definition layer 151. The first ray a passes through a first edge and a second edge, and the second ray b passes through the first edge and a third edge. The first edge is the edge of the first pixel definition layer 121 that is close to the first light-emitting device 131 and away from the substrate 11. The second edge is the edge of the second quantum dot definition layer 152 that is close to the substrate 11 and the first light-emitting device 131. The third edge is the edge of the first quantum dot definition layer 151 that is close to the substrate 11 and away from the first light-emitting device 131.

[0063] In some optional embodiments, the thickness of the organic layer 41 along the first direction is greater than or equal to 5 micrometers and less than or equal to 16 micrometers. For example, the linewidth of the pixel aperture is 54 micrometers, the linewidth of the pixel definition layer 12 is 20 micrometers, the thickness of the pixel definition layer 12 is 1.5 micrometers, the linewidth of the quantum dot aperture is 54 micrometers, the linewidth of the quantum dot definition layer 15 is 20 micrometers, the total film thickness between the corresponding quantum dot definition layer 15 and the pixel definition layer 12 is 9 micrometers, and the thickness of the organic layer 41 is 5 micrometers. Based on the organic layer 41, 38.5% of the light emitted by the light-emitting device 13 can enter the quantum dot layer 16 of the adjacent pixel.

[0064] In some alternative implementations, such as Figure 1As shown, the display panel further includes a planarization layer 14, which is disposed between the organic layer 41 and the backlight layer. The surface of the planarization layer 14 facing away from the substrate 11 is a flat surface. In order to reduce the thickness of the organic layer 41 while ensuring its function of preventing optical crosstalk, thereby reducing light loss when the light-emitting device 13 enters the quantum dot layer 16 corresponding to the light-emitting device 13 and improving display performance, in this embodiment, the refractive index of the organic layer 41 is less than that of the planarization layer 14. When the light from the first light-emitting device 131 enters the organic layer 41 and passes through the interface between the organic layer 41 and the planarization layer 14, the light is deflected towards the interface after entering the organic layer 41 because the refractive index of the organic layer 41 is less than that of the planarization layer 14. This reduces the propagation path angle of the light, thereby reducing the minimum thickness of the organic layer 41 to prevent optical crosstalk.

[0065] In some alternative embodiments, the refractive index of the organic layer 41 is less than or equal to 1.5%.

[0066] In some alternative implementations, to further prevent optical crosstalk between adjacent pixels, Figure 2 This illustration shows a structural diagram of an embodiment of the present application, which includes an organic layer and a first light-shielding layer. Figure 2 As shown, the display panel further includes a first light-shielding layer 51, which is disposed between the pixel definition layer 12 and the quantum dot definition layer 15. The first light-shielding layer 51 is configured to absorb light incident on it. In this embodiment, by providing the first light-shielding layer 51, the light emitted by the light-emitting device 13 towards the adjacent quantum dot layer 16 is further limited to reduce optical crosstalk. Optionally, the first light-shielding layer 51 can be a black matrix (BM).

[0067] In some alternative embodiments, in order to avoid the first light-shielding layer 51 from adversely affecting the aperture ratio of the pixel aperture, and at the same time, the first light-shielding layer 51 can block the light emitted by the light-emitting device 13 towards the adjacent quantum dot layer 16, the orthographic projection of the first light-shielding layer 51 on the substrate 11 is located inside the orthographic projection of the pixel definition layer 12 on the substrate 11, or the orthographic projection of the first light-shielding layer 51 on the substrate 11 coincides with the orthographic projection of the pixel definition layer 12 on the substrate 11.

[0068] In some alternative embodiments, at least a portion of the first light-shielding layer 51 is disposed in the path of the light emitted by the first light-emitting device 131 into the first opening.

[0069] In some optional embodiments, to ensure that the light emitted by the light-emitting device 13 does not illuminate the adjacent quantum dot layer 16 and to completely prevent optical crosstalk, it is necessary to ensure that the first light-shielding layer 51 completely blocks the light transmission path of the light-emitting device 13 towards the adjacent quantum dot layer 16. Specifically, in the first direction, the thickness of the first light-shielding layer 51 is greater than or equal to the second illumination limit distance, which is the maximum distance on the target plane from the light emitted by the first light-emitting device 131 towards the first opening to the surface of the first pixel definition layer 121 facing away from the substrate 11. The target plane is the plane where the side of the first light-shielding layer 51 is located near the first light-emitting device 131.

[0070] In some alternative embodiments, the range of the light path from the first light-emitting device 13 to the first opening, confined by the first light-shielding layer 51 and the quantum dot defining layer 15, can be determined based on the third ray c. Specifically, as... Figure 2 As shown, the second illumination limit distance is the distance from the third ray c emitted by the first light-emitting device 131 on the target plane to the surface of the first pixel definition layer 121 facing away from the substrate 11. The third ray c passes through a third edge and a fourth edge. The third edge is the edge of the first quantum dot definition layer 151 that is close to the substrate 11 and far from the first light-emitting device 131, and the fourth edge is the edge of the first light-emitting device 131 that is far from the first quantum dot definition layer 151.

[0071] In some alternative embodiments, the thickness of the first light-shielding layer 51 along the first direction is greater than or equal to 1 micrometer and less than or equal to 10 micrometers.

[0072] For example, the linewidth of the pixel aperture is 54 micrometers, the linewidth of the pixel definition layer 12 is 20 micrometers, the thickness of the pixel definition layer 12 is 1.5 micrometers, the linewidth of the quantum dot aperture is 54 micrometers, the linewidth of the quantum dot definition layer 15 is 20 micrometers, and the total film thickness between the quantum dot definition layer 15 and the pixel definition layer 12 is 9 micrometers. The first light-shielding layer 51 has the same width as the pixel definition layer 12, and the thickness of the first light-shielding layer 51 is 1.5 micrometers. Based on the first light-shielding layer 51, 11.1% of the light emitted by the light-emitting device 13 can enter the quantum dot layer 16 of the adjacent pixel.

[0073] In some optional embodiments, the display panel further includes: a first encapsulation layer 31 disposed between the planarization layer 14 and the backlight layer, the first encapsulation layer 31 covering at least the light-emitting device 13, the pixel definition layer 12, and the side surface of the first light-shielding layer 51 facing away from the substrate 11; a second encapsulation layer 32 disposed between the planarization layer 14 and the organic layer 41, the second encapsulation layer 32 covering the entire side surface of the planarization layer 14 facing away from the substrate 11; and a third encapsulation layer 33 disposed on the side of the quantum dot definition layer 15 facing away from the substrate 11, the third encapsulation layer 33 covering at least the quantum dot definition layer 15 and the side surface of the quantum dot layer 16 facing away from the substrate 11.

[0074] This application provides a display panel and a display device. The display panel includes: a substrate; a backlight layer disposed on one side of the substrate and including a plurality of light-emitting devices; a quantum dot definition layer disposed on the side of the backlight layer away from the substrate, the quantum dot definition layer defining a plurality of spaced-apart quantum dot openings, and a quantum dot layer corresponding to the light-emitting devices disposed within each quantum dot opening; and an organic layer disposed inside the plurality of quantum dot openings, between the backlight layer and the quantum dot layer. This application provides an organic layer located on the side of the quantum dot layer closer to the light-emitting devices. Incident light from surrounding pixels, after passing through the organic layer, will not illuminate the quantum dot layer but will be absorbed by the quantum dot definition layer surrounding the quantum dot layer. This ensures that the quantum dot layer is only excited by incident light emitted from its corresponding light-emitting devices, effectively preventing optical crosstalk between adjacent pixels.

[0075] Based on the same inventive concept, this application discloses a display panel. Figure 3 This application provides a schematic diagram of the structure of a display panel with a second light-shielding layer according to an embodiment of the present application. Figure 3As shown, the display panel includes: a substrate 11; a backlight layer disposed on one side of the substrate 11, including a plurality of light-emitting devices 13; a quantum dot definition layer 15 disposed on the side of the backlight layer away from the substrate 11, the quantum dot definition layer 15 defining a plurality of spaced quantum dot openings, and a quantum dot layer 16 corresponding to the light-emitting devices 13 disposed within the quantum dot openings; and a pixel definition layer 12 disposed between the substrate 11 and the quantum dot definition layer 15. 2. A plurality of pixel openings are defined at intervals, and the pixel openings are configured in a one-to-one correspondence with the quantum dot openings. The light-emitting device 13 is disposed within each pixel opening. A second light-shielding layer 52 is disposed between the pixel definition layer 12 and the quantum dot definition layer 15. The orthographic projection of the second light-shielding layer 52 on the substrate 11 is located inside the orthographic projection of the pixel definition layer 12 on the substrate 11, or the orthographic projection of the second light-shielding layer 52 on the substrate 11 coincides with the orthographic projection of the pixel definition layer 12 on the substrate 11.

[0076] In some alternative embodiments, at least a portion of the second light-shielding layer 52 is disposed in the path of the light emitted by the first light-emitting device 131 into the first opening.

[0077] In some optional embodiments, to ensure that the light emitted by the light-emitting device 13 does not illuminate the adjacent quantum dot layer 16 and to completely prevent optical crosstalk, it is necessary to ensure that the second light-shielding layer 52 completely blocks the light transmission path of the light-emitting device 13 towards the adjacent quantum dot layer 16. Specifically, in the first direction, the thickness of the second light-shielding layer 52 is greater than or equal to the second illumination limit distance, which is the maximum distance on the target plane from the light emitted by the first light-emitting device 131 towards the first opening to the surface of the first pixel definition layer 121 facing away from the substrate 11. The target plane is the plane where the side of the second light-shielding layer 52 is located near the first light-emitting device 131.

[0078] In some alternative embodiments, the range of the light path from the first light-emitting device 13 to the first opening, confined by the second light-shielding layer 52 and the quantum dot defining layer 15, can be determined based on the third ray c. Specifically, as... Figure 2As shown, the second illumination limit distance is the distance from the third ray c emitted by the first light-emitting device 131 on the target plane to the surface of the first pixel definition layer 121 facing away from the substrate 11. The third ray c passes through a third edge and a fourth edge. The third edge is the edge of the first quantum dot definition layer 151 that is close to the substrate 11 and far from the first light-emitting device 131, and the fourth edge is the edge of the first light-emitting device 131 that is far from the first quantum dot definition layer 151.

[0079] In some alternative embodiments, the thickness of the second light-shielding layer 52 along the first direction is greater than or equal to 1 micrometer and less than or equal to 10 micrometers.

[0080] Based on the same inventive concept, this application discloses a display device, which includes the display panel described in the embodiments of this application, wherein the display device is used to display images.

[0081] In some optional embodiments, the display device includes, but is not limited to, any product or component with display function such as a television, laptop, tablet, mobile phone, personal digital assistant (PDA), navigator, wearable device, virtual reality (VR) device, etc. Those skilled in the art can make appropriate selections according to the actual use of the display device, and this application will not elaborate further.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0083] This application describes embodiments with reference to flowchart illustrations and / or block diagrams of methods, apparatuses, electronic devices, and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0084] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0085] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0086] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0087] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0088] The above provides a detailed description of a display panel and display device provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display panel, characterized in that, The display panel includes: Substrate; A backlight layer, disposed on one side of the substrate, includes multiple light-emitting devices; A quantum dot defining layer is disposed on the side of the backlight layer away from the substrate. The quantum dot defining layer defines a plurality of quantum dot openings spaced apart. A quantum dot layer corresponding to the light-emitting device is disposed within each quantum dot opening. An organic layer is disposed inside the plurality of quantum dot openings and between the backlight layer and the quantum dot layer.

2. The display panel according to claim 1, characterized in that, The quantum dot layer includes a first quantum dot layer and a second quantum dot layer disposed adjacently, the light-emitting device includes a first light-emitting device disposed corresponding to the first quantum dot layer, and the quantum dot opening includes a first opening disposed in the second quantum dot layer; The organic layer is located on the side of the surface facing away from the substrate, on the side where the maximum angle of light emitted by the first light-emitting device enters the first opening and faces away from the substrate.

3. The display panel according to claim 2, characterized in that, The thickness of the organic layer along the first direction is greater than or equal to the first light limit distance; The first illumination limit distance is the maximum distance between the first light ray and the second light ray along the first direction within the first opening. The first light ray is the light ray with the maximum angle that the first light-emitting device enters into the first opening, and the second light ray is the light ray with the minimum angle that the first light-emitting device enters into the first opening. The first direction is the arrangement direction of the substrate and the backlight layer.

4. The display panel according to any one of claims 1-3, characterized in that, The display panel also includes: A pixel definition layer is disposed between the substrate and the quantum dot definition layer. The pixel definition layer defines a plurality of pixel openings that are spaced apart. The pixel openings correspond one-to-one with the quantum dot openings, and the light-emitting device is disposed within the pixel openings.

5. The display panel according to claim 4, characterized in that, The quantum dot definition layer includes a first quantum dot definition layer and a second quantum dot definition layer disposed adjacent to each other. The first quantum dot definition layer is disposed between the first quantum dot layer and the second quantum dot layer, and the second quantum dot definition layer is disposed on the side of the first quantum dot definition layer away from the first quantum dot layer. The pixel definition layer includes a first pixel definition layer that is configured corresponding to the first quantum dot definition layer; The first ray passes through the first edge and the second edge, and the second ray passes through the first edge and the third edge; Wherein, the first edge is the edge of the first pixel definition layer that is close to the first light-emitting device and far away from the substrate, the second edge is the edge of the second quantum dot definition layer that is close to both the substrate and the first light-emitting device, and the third edge is the edge of the first quantum dot definition layer that is close to the substrate and far away from the first light-emitting device.

6. The display panel according to claim 1, characterized in that, The thickness of the organic layer along the first direction is greater than or equal to 5 micrometers and less than or equal to 16 micrometers, where the first direction is the arrangement direction of the substrate and the backlight layer.

7. The display panel according to claim 1, characterized in that, The display panel further includes a planarization layer disposed between the organic layer and the backlight layer, wherein the refractive index of the organic layer is less than that of the planarization layer.

8. The display panel according to claim 1, characterized in that, The refractive index of the organic layer is less than or equal to 1.5%.

9. The display panel according to claim 4, characterized in that, The height of the pixel definition layer along the first direction is less than or equal to 1.5 micrometers, where the first direction is the arrangement direction of the substrate and the backlight layer.

10. The display panel according to claim 4, characterized in that, The display panel further includes a first light-shielding layer, which is disposed between the pixel definition layer and the quantum dot definition layer; The orthographic projection of the first light-shielding layer on the substrate is located inside the orthographic projection of the pixel definition layer on the substrate, or the orthographic projection of the first light-shielding layer on the substrate coincides with the orthographic projection of the pixel definition layer on the substrate.

11. The display panel according to claim 10, characterized in that, At least a portion of the first light-shielding layer is disposed in the path of light entering the first opening from the first light-emitting device.

12. The display panel according to claim 10, characterized in that, The quantum dot definition layer includes a first quantum dot definition layer and a second quantum dot definition layer disposed adjacent to each other. The first quantum dot definition layer is disposed between the first quantum dot layer and the second quantum dot layer, and the second quantum dot definition layer is disposed on the side of the first quantum dot definition layer away from the first quantum dot layer. The pixel definition layer includes a first pixel definition layer that is configured corresponding to the first quantum dot definition layer; In the first direction, the thickness of the first light-shielding layer is greater than or equal to the second light-limiting distance, which is the maximum distance on the target plane from the light emitted by the first light-emitting device toward the first opening to the surface of the first pixel definition layer away from the substrate, and the target plane is the plane on the side of the first light-shielding layer near the first light-emitting device.

13. The display panel according to claim 12, characterized in that, The second illumination limit distance is the distance from the third ray emitted by the first light-emitting device to the surface of the first pixel definition layer on the side away from the substrate on the target plane; The third ray passes through a third edge and a fourth edge. The third edge is the edge of the first quantum dot defining layer that is close to the substrate and far from the first light-emitting device. The fourth edge is the edge of the first light-emitting device that is far from the first quantum dot defining layer.

14. A display panel, characterized in that, The display panel includes: Substrate; A backlight layer, disposed on one side of the substrate, includes multiple light-emitting devices; A quantum dot defining layer is disposed on the side of the backlight layer away from the substrate. The quantum dot defining layer defines a plurality of quantum dot openings spaced apart. A quantum dot layer corresponding to the light-emitting device is disposed within each quantum dot opening. A pixel definition layer is disposed between the substrate and the quantum dot definition layer. The pixel definition layer defines a plurality of pixel openings that are spaced apart. The pixel openings correspond one-to-one with the quantum dot openings. The light-emitting device is disposed within the pixel openings. A second light-shielding layer is disposed between the pixel definition layer and the quantum dot definition layer; The orthographic projection of the second light-shielding layer on the substrate is located inside the orthographic projection of the pixel definition layer on the substrate, or the orthographic projection of the second light-shielding layer on the substrate coincides with the orthographic projection of the pixel definition layer on the substrate.

15. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-13, or the display device includes a display panel as described in claim 14.

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