Display panel and display device

Abstract

The display panel comprises a first substrate, a color conversion layer, a light-emitting device layer and a liquid crystal layer. The light-emitting device layer comprises a light-emitting device. The liquid crystal layer comprises a first light path adjusting part and a second light path adjusting part arranged at intervals. The first light path adjusting part is at least partially overlapped with the light-emitting device on the first substrate. The second light path adjusting part is arranged at intervals with the light-emitting device on the first substrate. The second light path adjusting part has at least a first state. When the second light path adjusting part is in the first state, the light rays emitted by the light-emitting device are refracted through the first light path adjusting part to the second light path adjusting part to narrow the light-emitting angle of the light-emitting device, or the light rays are scattered at least once. The display device is also provided.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] Micro LED has advantages of long life, high reliability, high color purity, modularity, customization, repairability, etc., and is the most likely display technology to replace Organic Light-Emitting Diode (OLED) in the future.

[0003] The challenges in the development of micro LED technology currently include chip light-emitting uniformity and high-yield transfer, etc. The above problems will be important difficulties affecting the development of micro LED technology for a long time in the foreseeable future. In addition to efforts in areas such as barrier uniformity, color conversion technology is also a way to effectively improve the above problems. Color conversion technology realizes photoluminescence through a color conversion layer arranged on the light-emitting side of the micro LED, thereby realizing color conversion function. In this way, only one color of micro LED can be arranged in the display panel, thereby reducing the dependence of display panel manufacturers on micro LED, especially the red micro LED which is complex in process, difficult in technology, and low in yield. Moreover, color conversion technology can simplify the original three times of high-yield transfer (red micro LED, blue micro LED and green micro LED) to one time, greatly reducing the yield loss and repair workload caused by high-yield transfer.

[0004] However, in the display panel using color conversion technology, there is a large gap between the micro LED and the color conversion layer, which will cause color mixing phenomenon, thereby affecting the display effect. SUMMARY

[0005] In view of the above problems, the present disclosure provides a display panel and a display device.

[0006] According to a first aspect of the present disclosure, a display panel is provided, comprising:

[0007] a first substrate;

[0008] a color conversion layer arranged on the first substrate;

[0009] a light-emitting device layer arranged between the first substrate and the color conversion layer; and

[0010] a liquid crystal layer arranged between the light-emitting device layer and the color conversion layer;

[0011] The light-emitting device layer includes a light-emitting device, the liquid crystal layer includes a first light path adjusting part and a second light path adjusting part arranged at intervals, a projection of the first light path adjusting part on the first substrate is at least partially overlapped with a projection of the light-emitting device on the first substrate, and a projection of the second light path adjusting part on the first substrate is arranged at intervals with the projection of the light-emitting device on the first substrate.

[0012] The second light path adjusting part has at least a first state, when the second light path adjusting part is in the first state, among the light emitted by the light-emitting device, the light incident to the second light path adjusting part from the first light path adjusting part is refracted to narrow the light-emitting angle of the light-emitting device, or the light is scattered at least once.

[0013] According to an embodiment of the present disclosure, the display panel further comprises:

[0014] A first driving component arranged on the first substrate;

[0015] The second light path adjusting part has the first state and the second state, and the second light path adjusting part is configured to switch between the first state and the second state in response to an electric field applied by the first driving component; when the second light path adjusting part is in the first state, the refractive index of the second light path adjusting part is smaller than the refractive index of the first light path adjusting part, so that the light incident to the second light path adjusting part from the first light path adjusting part is refracted; when the second light path adjusting part is in the second state, the refractive index of the second light path adjusting part is substantially the same as the refractive index of the first light path adjusting part.

[0016] According to an embodiment of the present disclosure, a projection of the first driving component on the first substrate is arranged at intervals with a projection of the first light path adjusting part on the first substrate.

[0017] According to an embodiment of the present disclosure, the display panel further comprises:

[0018] A first electrode layer arranged on a side of the liquid crystal layer close to the first substrate;

[0019] A second electrode layer arranged on a side of the liquid crystal layer away from the first substrate;

[0020] The first driving component includes a first electrode in the first electrode layer and a second electrode in the second electrode layer.

[0021] According to an embodiment of the present disclosure, the display panel further comprises a pixel circuit layer arranged between the light-emitting device layer and the first substrate.

[0022] The pixel circuit layer comprises a first thin film transistor, and the first end of the light-emitting device is electrically connected to a first electrode of the first thin film transistor through a first connecting electrode;

[0023] The first connecting electrode is arranged in the same layer as the first electrode and is made of the same material.

[0024] According to an embodiment of the present disclosure, the second electrode is electrically connected to a first voltage terminal, and the first electrode is electrically connected to a second end of the light-emitting device and a second voltage terminal; or,

[0025] The second electrode is electrically connected to a first voltage terminal, and the first electrode is electrically connected to a first end of the light-emitting device.

[0026] According to an embodiment of the present disclosure, the display panel further comprises a third electrode layer arranged on the side of the liquid crystal layer close to the first substrate, and the first driving assembly comprises a third electrode in the third electrode layer, the third electrode comprising a first sub-electrode and a second sub-electrode arranged at intervals.

[0027] The first driving assembly is configured to generate the electric field in response to a first electric signal provided to the first sub-electrode and a second electric signal provided to the second sub-electrode.

[0028] According to an embodiment of the present disclosure, the electric signal provided to the first driving assembly comprises an alternating current signal.

[0029] According to an embodiment of the present disclosure, the liquid crystal in the second light path adjusting part comprises a first liquid crystal and a second liquid crystal, and the second liquid crystal is obtained by irradiating a photopolymer type liquid crystal material with ultraviolet light under a preset electric field;

[0030] The second liquid crystal is configured to keep the long axis of the first liquid crystal in a preset direction, so that the second light path adjusting part is always in the first state.

[0031] According to an embodiment of the present disclosure, the display panel further comprises:

[0032] a second driving assembly arranged on the first substrate;

[0033] The liquid crystal in the first light path adjusting part and the second light path adjusting part comprises a third liquid crystal, the first light path adjusting part has a third state and a fourth state, and the first light path adjusting part is configured to switch between the third state and the fourth state in response to an electric field applied by the second driving assembly.

[0034] When the first light path adjusting part is in the third state and the second light path adjusting part is in the first state, the third liquid crystal in the first light path adjusting part is in ordered arrangement, and the third liquid crystal in the second light path adjusting part is in disordered arrangement, so that the light incident from the first light path adjusting part to the second light path adjusting part is scattered; when the first light path adjusting part is in the fourth state and the second light path adjusting part is in the first state, the third liquid crystal in the second light path adjusting part and the third liquid crystal in the first light path adjusting part are both in disordered arrangement.

[0035] According to an embodiment of the present disclosure, the display panel further comprises a fourth electrode layer arranged on a side of the liquid crystal layer away from the first substrate, and a pixel circuit layer arranged between the light emitting device layer and the first substrate, the second driving component comprises a fourth electrode in the fourth electrode layer, and the fourth electrode is electrically connected with a third voltage terminal;

[0036] The pixel circuit layer comprises a first thin film transistor, a first end of the light emitting device is electrically connected with the first thin film transistor, and a second end of the light emitting device is electrically connected with a fourth voltage terminal.

[0037] The second driving component is configured to generate an electric field in response to a voltage difference between the fourth electrode and the first end of the light emitting device, or generate an electric field in response to a voltage difference between the fourth electrode and the second end of the light emitting device.

[0038] According to an embodiment of the present disclosure, the third liquid crystal comprises at least one of a polymer dispersed liquid crystal and a network interpenetrating polymer liquid crystal.

[0039] According to an embodiment of the present disclosure, the display panel further comprises:

[0040] A barrier layer arranged on the first substrate;

[0041] The color conversion layer comprises a plurality of quantum dots of different colors, the barrier layer comprises a barrier wall, and the barrier wall separates the plurality of quantum dots from each other; and

[0042] The second light path adjusting part is configured to, when the second light path adjusting part is in the first state, cause the light incident from the first light path adjusting part to the second light path adjusting part to be emitted towards the barrier wall.

[0043] According to an embodiment of the present disclosure, the display panel comprises the first driving component as described above.

[0044] When the second light path adjusting portion is in the second state, at least part of light rays incident on the second light path adjusting portion from the first light path adjusting portion are caused to exit toward at least one of the quantum dots.

[0045] According to an embodiment of the present disclosure, the barrier wall comprises a reflective material, and the display panel further comprises:

[0046] An optical absorption layer is arranged on a side of the barrier wall layer close to the first substrate substrate;

[0047] The optical absorption layer comprises an optical absorption portion, and a projection of the optical absorption portion on the first substrate substrate at least partially overlaps with a projection of the barrier wall on the first substrate substrate.

[0048] According to an embodiment of the present disclosure, the optical absorption portion comprises a plurality of color resist stacked in a thickness direction of the display panel, wherein different color resist have different colors; or,

[0049] The optical absorption portion comprises a black matrix.

[0050] According to an embodiment of the present disclosure, the light emitting device comprises a micro light emitting diode.

[0051] According to an embodiment of the present disclosure, the display panel further comprises a first alignment layer arranged on a side of the liquid crystal layer close to the first substrate substrate and a second alignment layer arranged on a side of the liquid crystal layer away from the first substrate substrate, and an alignment angle of the first alignment layer and the second alignment layer is the same; or,

[0052] Liquid crystal in the liquid crystal layer comprises a self-alignment liquid crystal material.

[0053] According to an embodiment of the present disclosure, the display panel further comprises a spacer layer between the color conversion layer and the first substrate substrate;

[0054] The spacer layer comprises a spacer, and a projection of the spacer on the first substrate substrate is arranged to be spaced apart from a projection of the first light path adjusting portion on the first substrate substrate.

[0055] A second aspect of the present disclosure provides a display device, comprising the display panel described above. BRIEF DESCRIPTION OF DRAWINGS

[0056] The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which:

[0057] Figure 1 A schematic diagram of a display panel in a pair of comparative examples is schematically shown;

[0058] Figure 2schematically illustrates a plan view of a display panel in an embodiment of the present disclosure;

[0059] Figure 3 schematically illustrates one of cross-sectional views in a display area in an embodiment of the present disclosure;

[0060] Figure 4 and Figure 5 schematically illustrates a schematic view of switching of the second light path adjusting portion between the first state and the second state in an embodiment of the present disclosure;

[0061] Figure 6 schematically illustrates a second of cross-sectional views of a display panel in an embodiment of the present disclosure;

[0062] Figure 7 schematically illustrates a third of cross-sectional views of a display panel in an embodiment of the present disclosure;

[0063] Figure 8 schematically illustrates a fourth of cross-sectional views of a display panel in an embodiment of the present disclosure;

[0064] Figure 9 schematically illustrates a fifth of cross-sectional views of a display panel in an embodiment of the present disclosure;

[0065] Figure 10 schematically illustrates a sixth of cross-sectional views of a display panel in an embodiment of the present disclosure;

[0066] Figure 11 schematically illustrates a seventh of cross-sectional views of a display panel in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0067] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present disclosure.

[0068] It should be noted that in the drawings, the size and relative size of the elements can be exaggerated for clarity and / or descriptive purposes. Thus, the size and relative size of the elements in the drawings are not necessarily drawn to scale. In the description and drawings, identical or similar reference signs indicate identical or similar components.

[0069] When an element is described as being "on" another element, "connected to" another element, or "coupled to" another element, it can be directly on, directly connected to, or directly coupled to the other element, or intervening elements can be present. In contrast, when an element is described as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. Other terms of description used herein, such as "between," "directly between," "adjacent to," "directly adjacent to," or "on" can be interpreted in a similar manner. In addition, the term "connected" can refer to physical or electrical connection, communication connection, or fluid connection. Furthermore, the X-axis, Y-axis and Z-axis are not limited to three axes of a rectangular coordinate system, and can be interpreted in a broader sense. For example, the X-axis, Y-axis and Z-axis can be perpendicular to one another, or can represent different directions that are not perpendicular to one another. For the purpose of the present disclosure, "at least one of X, Y and Z" and "at least one selected from the group consisting of X, Y and Z" can be interpreted to be any one of X, Y and Z, or any combination of any two or more of X, Y and Z, such as XYZ, XYY, YZ and ZZ. As used herein, the term "and / or" includes any and all combinations of one or more of the associated items.

[0070] It should be noted that, although the terms "first," "second," etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. Rather, these terms are used only to distinguish one element, component, region, layer and / or section from another element, component, region, layer and / or section. Thus, a first element, component, region, layer and / or section discussed below could be termed a second element, component, region, layer and / or section without departing from the teachings of the present disclosure.

[0071] Spatially relative terms, such as "upper," "lower," "left," "right," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device described herein is turned over in use, a

[0072] It should be understood by those skilled in the art that herein, unless otherwise specified, the expression "thickness" refers to the dimension along the surface perpendicular to the surface on which the respective film layer is disposed on the display panel, i.e. the dimension along the light-out direction of the display panel.

[0073] Herein, unless otherwise specified, the expression "patterning process" generally includes the steps of coating, exposing, developing, etching, stripping of photoresist, etc. The expression "one-time patterning process" means a process of forming a patterned layer, component, member, etc. using one mask plate.

[0074] It should be noted that the expression "same layer", "disposed on the same layer" or similar expressions refer to a layer structure formed by using the same film forming process to form a film layer for forming a specific pattern, and then patterning the film layer by one-time patterning process using the same mask plate. Depending on the specific pattern, the one-time patterning process can include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure can be continuous or discontinuous. These specific patterns can also be at different heights or have different thicknesses.

[0075] Herein, unless otherwise specified, the expression "electrically connected" can mean that two components or elements are directly electrically connected, for example, component or element A is in direct contact with component or element B, and an electrical signal can be transmitted therebetween; can mean that two components or elements are electrically connected through a conductive medium such as a conductive wire, for example, component or element A is electrically connected to component or element B through a conductive wire to transmit an electrical signal between the two components or elements; and can also mean that two components or elements are electrically connected through at least one electronic component, for example, component or element A is electrically connected to component or element B through at least one thin film transistor to transmit an electrical signal between the two components or elements.

[0076] Figure 1 A schematic diagram of a display panel in a pair of comparative examples is schematically shown as Figure 1As shown in the comparative example, the display panel adopts a color conversion technology, and specifically, the display panel includes a first substrate 11, a light emitting device layer 12 located on the first substrate 11, a color conversion layer 13 located on a side of the light emitting device layer 12 away from the first substrate 11, a second substrate 14 located on a side of the color conversion layer 13 away from the first substrate 11, and a pixel circuit layer 15 located between the light emitting device layer 12 and the first substrate 11, and the like. The light emitting device layer 12 can include a plurality of light emitting devices 121, and the light emitting devices 121 can include electroluminescent devices such as micro light emitting diodes (Micro LED) and the like. The color conversion layer 13 includes a plurality of quantum dots 131. Optionally, the quantum dots 131 are arranged one-to-one corresponding to the light emitting devices 121. The quantum dots 131 include photoluminescent materials capable of wavelength conversion, and light emitted by the light emitting devices 121 can be converted to a desired color after passing through the corresponding quantum dots 131, thereby realizing a color conversion function.

[0077] The inventors found in research that, in the preparation process of the display panel, the light emitting device layer 12 is first formed on the first substrate 11, and the color conversion layer 13 is formed on the second substrate 14. Then, the first substrate 11 with the light emitting device layer 12 and the second substrate 14 with the color conversion layer 13 are subjected to a process such as cell alignment to combine the two together, thereby obtaining the display panel. In the above process, in order to ensure that the light emitting devices 121 in the light emitting device layer 12 are not damaged by external forces, the side of the light emitting device layer 12 away from the first substrate 11 needs to have a certain buffer space, which causes a certain distance to exist between the light emitting device layer 12 and the color conversion layer 13 in the prepared display panel. For example, referring back to Figure 1 , assuming that the quantum dots 131 on the left are green quantum dots and the quantum dots 131 on the right are red quantum dots, when a red picture needs to be displayed, the light emitting devices 121 located below the red quantum dots emit light. Since a certain distance exists between the light emitting device layer 12 and the color conversion layer 13, part of the light emitted by the light emitting devices 121 on the right will propagate into the green quantum dots on the left, thereby causing color mixing and affecting the display effect.

[0078] Therefore, the display panel provided in the embodiments of the present disclosure, Figure 2 The plan view of the display panel in the embodiments of the present disclosure is schematically shown as Figure 2 As shown in the comparative example, the display panel of the embodiments of the present disclosure can have a display area AA and a non-display area NA located outside the display area AA, and a plurality of pixel units P arranged in an array along a first direction and a second direction are arranged in the display area AA, wherein the first direction can include the row direction of the display panel, that is, the horizontal direction in Figure 2 , and the second direction can include the column direction of the display panel, that is,Figure 2 Each pixel unit P can include a plurality of sub-pixels, and each sub-pixel can include a light emitting device to be described below. Figure 3 One of the cross-sectional views in the display area in the embodiments of the present disclosure is schematically shown, in combination with Figure 2 and Figure 3 As shown in the figure, in the embodiments of the present disclosure, the display panel includes a first substrate 21, and a color conversion layer 22, a light emitting device layer 23, and a liquid crystal layer 24 disposed on the first substrate 21. The light emitting device layer 23 is disposed between the first substrate 21 and the color conversion layer 22, and the liquid crystal layer 24 is disposed between the light emitting device layer 23 and the color conversion layer 22.

[0079] In the embodiments of the present disclosure, the light emitting device layer 23 includes a light emitting device 231. Optionally, the light emitting device layer 23 includes a plurality of light emitting devices 231. The light emitting device 231 can include an electroluminescent device. For example, the light emitting device 231 can include an organic electroluminescent diode (OLED) or a micro LED. Optionally, the display panel in the embodiments of the present disclosure is described below by taking the light emitting device 231 as an example of a micro LED.

[0080] The display panel further includes a pixel circuit layer 26 disposed on the side of the light emitting device layer 23 close to the first substrate 21. The pixel circuit layer 26 includes a plurality of pixel circuits (not shown in the figure). At least one pixel circuit is disposed in correspondence with and electrically connected to one light emitting device 231. For example, the pixel circuits are disposed in one-to-one correspondence with and electrically connected to the light emitting devices 231. The display panel further includes a gate drive circuit and a data drive chip (not shown in the figure) disposed on the first substrate 21 and located in the non-display area NA. The gate drive circuit and the data drive chip can be electrically connected to the plurality of pixel circuits through corresponding gate lines and data lines, and then drive the light emitting devices 231 corresponding to each pixel circuit to emit light through each pixel circuit.

[0081] The liquid crystal layer 24 includes a first light path adjusting part 241 and a second light path adjusting part 242 disposed at intervals. The orthographic projection of the first light path adjusting part 241 on the first substrate 21 at least partially overlaps the orthographic projection of the light emitting device 231 on the first substrate 21. The orthographic projection of the second light path adjusting part 242 on the first substrate 21 is disposed at an interval from the orthographic projection of the light emitting device 231 on the first substrate 21.

[0082] In the embodiments of the present disclosure, the light-emitting device layer 23 can include a plurality of light-emitting devices 231, and different light-emitting devices 231 have different colors, for example, the plurality of light-emitting devices 231 can include red light-emitting devices, green light-emitting devices and blue light-emitting devices. The liquid crystal layer 24 can include a plurality of first light path adjusting portions 241 and a plurality of second light path adjusting portions 242. At least one light-emitting device 231 can be arranged in correspondence with at least one first light path adjusting portion 241, and different light-emitting devices 231 correspond to different first light path adjusting portions 241. For example, the light-emitting device 231 can be arranged in one-to-one correspondence with the first light path adjusting portion 241. Alternatively, the orthographic projection of the at least one first light path adjusting portion 241 on the first substrate 21 can at least partially overlap with the orthographic projection of the light-emitting device 231 corresponding thereto on the first substrate 21, so that when the light-emitting device 231 emits light, the light emitted by the light-emitting device 231 can pass through the first light path adjusting portion 241 and then exit.

[0083] Alternatively, the liquid crystal layer 24 can include a plurality of second light path adjusting portions 242, and one second light path adjusting portion 242 can be arranged between two first light path adjusting portions 241 adjacent in the first direction; or one second light path adjusting portion 242 can be arranged between two first light path adjusting portions 241 adjacent in the second direction; or one second light path adjusting portion 242 can be arranged between two first light path adjusting portions 241 adjacent in the first direction, and one second light path adjusting portion 242 can also be arranged between two first light path adjusting portions 241 adjacent in the second direction.

[0084] Please refer to Figure 3 The working principle of the first light path adjusting portion 241 and the second light path adjusting portion 242 in the embodiments of the present disclosure will be described below by taking two first light path adjusting portions 241 adjacent in the first direction and a second light path adjusting portion 242 located between the two first light path adjusting portions 241 as an example.

[0085] In the embodiments of the present disclosure, the second light path adjusting portion 242 has at least a first state. When the second light path adjusting portion 242 is in the first state, among the light emitted by the light-emitting device 231, the light incident on the second light path adjusting portion 242 through the first light path adjusting portion 241 is refracted to narrow the light-emitting angle of the light-emitting device 231, or the part of the light is scattered at least once. Taking the light incident on the second light path adjusting portion 242 through the first light path adjusting portion 241 as an example, when displaying a pure color picture, for example, a red picture, a green picture and a blue picture, etc., for the light-emitting device 231 corresponding to the first light path adjusting portion 241, the light-emitting angle of the light-emitting device 231 can be narrowed, or the part of the light is scattered at least once. Figure 3The light emitted by any one of the light emitting devices 231 will be refracted when the light is incident on the second light path adjusting portion 242 from the first light path adjusting portion 241, because the light is incident from a light-dense medium to a light-sparse medium, the refractive angle is greater than the incident angle, so that the light emitting angle of the light emitting device 231 can be narrowed, and the color mixing problem caused by the light emitted by the light emitting device 231 being incident on other quantum dots 221 can be improved, so that the color purity of the pure color picture is improved. For example, for the light emitting device 231 on the right side of the figure, the light emitted by the light emitting device 231 will be greatly narrowed when the light is incident on the quantum dots 221 on the left side after passing through the second light path adjusting portion 242. Figure 3 The light emitted by the light emitting device 231 on the right side of the figure will be greatly narrowed when the light is incident on the quantum dots 221 on the left side after passing through the second light path adjusting portion 242.

[0086] It should be noted that when the liquid crystal in the second light path adjusting portion 242 is arranged in disorder and the liquid crystal in the first light path adjusting portion 241 is arranged in order, the light incident on the second light path adjusting portion 242 from the first light path adjusting portion 241 can be scattered, and each scattering weakens the intensity of the light. For example, for the light emitting device 231 on the right side of the figure, the light emitted by the light emitting device 231 will be greatly scattered when the light is incident on the quantum dots 221 on the left side after passing through the second light path adjusting portion 242. Figure 3 The light emitted by the light emitting device 231 on the right side of the figure will be greatly scattered when the light is incident on the quantum dots 221 on the left side after passing through the second light path adjusting portion 242.

[0087] It should be noted that in the embodiments of the present disclosure, the pure color picture can refer to all or part of the image displayed by the display panel. For example, the pure color picture can refer to the picture displayed by one or more pixel units P. Each pixel unit P can include a plurality of sub-pixels, and the colors of the sub-pixels in the same pixel unit P are different, for example, the plurality of sub-pixels include red sub-pixels, green sub-pixels and blue sub-pixels, and the “pure color” can refer to the color of one of the sub-pixels in one pixel unit P, for example, the pure color can include red, green and blue.

[0088] In the embodiments of the present disclosure, the light incident on the second light path adjusting portion 242 from the first light path adjusting portion 241 can be refracted or scattered, and first the refraction of the light incident on the second light path adjusting portion 242 from the first light path adjusting portion 241 will be described in combination with the first light path adjusting portion 241. Figure 2 to Figure 9 The refraction of the light incident on the second light path adjusting portion 242 from the first light path adjusting portion 241 will be further described.

[0089] Figure 4 and Figure 5 The schematic diagram of the second light path adjusting portion switching between the first state and the second state in the embodiments of the present disclosure is shown schematically, wherein, Figure 4 The second light path adjusting portion is in the first state, Figure 5The second light path adjusting part is in the second state. In combination Figure 4 and Figure 5 As shown in FIG. 2, in some embodiments, the display panel further comprises a first driving component 25, and the second light path adjusting part 242 is configured to switch between the first state and the second state in response to an electric field applied by the first driving component 25.

[0090] Optionally, the display panel comprises a plurality of first driving components 25, and at least one first driving component 25 is arranged in correspondence with one second light path adjusting part 242. Different first driving components 25 correspond to different second light path adjusting parts 242, for example, the first driving component 25 is arranged in one-to-one correspondence with the second light path adjusting part 242. The second light path adjusting part 242 can be configured to switch between the first state and the second state in response to an electric field applied by the first driving component 25 corresponding thereto.

[0091] Optionally, the at least one first driving component 25 can comprise two plate-shaped electrodes located on opposite sides of the liquid crystal layer 24, or the at least one first driving component 25 can comprise a slit electrode located on one side of the liquid crystal layer 24, which will be described in detail below, and will not be described here.

[0092] For a pure color picture, such as a red picture, a green picture, a blue picture, etc., when the second light path adjusting part 242 is in the first state, the refractive index of the second light path adjusting part 242 is smaller than the refractive index of the first light path adjusting part 241, so that the light rays incident from the first light path adjusting part to the second light path adjusting part are refracted. At this time, the light emitting angle of the light emitting device 231 can be narrowed, thereby improving the color purity of the pure color picture. For a mixed color picture, such as a yellow picture, a cyan picture, a magenta picture, a white picture, etc., the second light path adjusting part 242 can be in the second state. In the embodiments of the present disclosure, when the second light path adjusting part 242 is in the second state, the refractive index of the second light path adjusting part 242 is substantially the same as the refractive index of the first light path adjusting part 241. At this time, the light emitting angle of the light emitting device 231 is unchanged, and for Figure 5 In the two light emitting devices 231 in FIG. 2, the light emitted by the left light emitting device 231 can be incident to the quantum dots 221 on the right side in addition to the quantum dots 221 above it; similarly, the light emitted by the right light emitting device 231 can be incident to the quantum dots 221 on the left side in addition to the quantum dots 221 above it. In this way, the intensity of the light source incident to each quantum dot 221 is increased, thereby improving the display brightness and further reducing the display power consumption.

[0093] It should be noted that in the embodiments of the present disclosure, the mixed color picture can refer to all or part of the image displayed by the display panel. For example, the mixed color picture can refer to the picture displayed by one or more pixel units. As described above, the "pure color" can refer to the color of one of the sub-pixels in one pixel unit, and correspondingly, the mixed color can refer to the color formed by mixing multiple sub-pixels in one pixel unit, for example, yellow, cyan, magenta, white, etc.

[0094] Figure 6 Fig. 2 schematically shows a cross-sectional view of a display panel in some embodiments of the present disclosure, Figure 6 As shown in some embodiments, the display panel further comprises a barrier layer 27 disposed on the first substrate 21. The color conversion layer 22 comprises a plurality of quantum dots 221, and the quantum dots 221 comprise photoluminescent materials capable of wavelength conversion, for example, the quantum dots 221 can comprise organic photoluminescent materials such as CdSe and InP. Different quantum dots 221 have different colors, for example, the plurality of quantum dots 221 can comprise red quantum dots, green quantum dots and blue quantum dots.

[0095] Optionally, the quantum dots 221 can be doped with reflective materials, and the light utilization rate of the quantum dots 221 can be improved by doping the reflective materials in the quantum dots 221.

[0096] The barrier layer 27 comprises a barrier 271, and the barrier 271 can comprise lightproof materials. The barrier 271 separates the plurality of quantum dots 221 from each other. The second light path adjusting portion 242 is specifically configured to: when the second light path adjusting portion 242 is in the first state, the second light path adjusting portion 242 can make the light incident to the second light path adjusting portion 242 from the first light path adjusting portion 241 exit towards the barrier 271. When the second light path adjusting portion 242 is in the first state, at least part of the light incident to the second light path adjusting portion 242 from the first light path adjusting portion 241 exits towards at least one quantum dot 221.

[0097] Optionally, the barrier layer 27 comprises a plurality of barriers 271, and the orthographic projection of at least one barrier 271 on the first substrate 21 is correspondingly arranged with at least one second light path adjusting portion 242, for example, the barrier 271 is correspondingly arranged with the second light path adjusting portion 242 one by one. The orthographic projection of at least one barrier 271 on the first substrate 21 and the orthographic projection of the second light path adjusting portion 242 corresponding thereto on the first substrate 21 at least partially overlap.

[0098] Optionally, the orthographic projection of at least one barrier 271 on the first substrate 21 covers the orthographic projection of the second light path adjusting portion 242 corresponding to the barrier 271 on the first substrate 21.

[0099] When the second light path adjusting portion 242 is in the first state, the second light path adjusting portion 242 can make the light incident to the second light path adjusting portion 242 from the first light path adjusting portion 241 exit towards the barrier wall 271 corresponding to the second light path adjusting portion 242. Please continue to refer to Figure 6 For the light emitting device 231 on the right side, the light emitted by the light emitting device 231 is mainly divided into two parts, one part of which exits through the first light path adjusting portion 241 towards the quantum dot 221 located above the light emitting device 231 to realize color conversion in the quantum dot 221. The other part of the light exits through the first light path adjusting portion 241 and is incident to the second light path adjusting portion 242. Since this part of the light is incident from the optically dense medium to the optically sparse medium, the light is upward deflected. Since the orthogonal projection of the barrier wall 271 on the first substrate 21 covers the orthogonal projection of the second light path adjusting portion 242 corresponding to the barrier wall 271 on the first substrate 21, if the deflected light still has a large light exit angle, the deflected light can be blocked by the barrier wall 271 above the second light path adjusting portion 242 and will not be incident to the quantum dot 221 on the left side, thereby further improving the problem of color mixing.

[0100] In some embodiments, when the second light path adjusting portion 242 is in the second state, at least part of the light incident to the second light path adjusting portion 242 from the first light path adjusting portion 241 exits towards at least one quantum dot 221. In this way, the intensity of the light source incident to each quantum dot 221 is increased, so that the display brightness can be improved, and the display power consumption can be reduced.

[0101] In some embodiments, the barrier wall 271 can include a light-absorbing material, or the barrier wall 271 can include a reflective material. By doping the reflective material in the barrier wall 271, the light utilization rate of the quantum dot 221 can be improved. When the barrier wall 271 includes a reflective material, to prevent the light incident to the barrier wall 271 from the second light path adjusting portion 242 from being reflected by the barrier wall 271, in some embodiments, the display panel further includes a light-absorbing layer 28 disposed on the side of the barrier wall layer 27 close to the first substrate 21. The light-absorbing layer 28 includes a light-absorbing portion 281, and the orthogonal projection of the light-absorbing portion 281 on the first substrate 21 at least partially overlaps the orthogonal projection of the barrier wall 271 on the first substrate 21.

[0102] In the embodiments of the present disclosure, the light-absorbing portion 281 can absorb the light emitted from the second light path adjusting portion 242 and the light reflected by the barrier wall 271 back to the second light path adjusting portion 242, thereby preventing the problem of light crosstalk caused by multiple reflections of the light between the barrier wall layer 27 and the first substrate 21.

[0103] In some embodiments, the light absorption portion 281 includes a plurality of color resist stacked in the thickness direction of the display panel, wherein the colors of different color resist are different, for example, the plurality of color groups can include a red color group, a green color group and a blue color group. Alternatively, the light absorption portion 281 includes a black matrix.

[0104] In some embodiments, the liquid crystal in the liquid crystal layer 24 can include positive liquid crystal or negative liquid crystal. The positive liquid crystal can refer to a liquid crystal material satisfying ε1>ε2, and n1>n2, wherein ε1 represents the dielectric constant of the positive liquid crystal in the horizontal state, ε2 represents the dielectric constant of the positive liquid crystal in the vertical state, n1 represents the refractive index of the positive liquid crystal in the horizontal state, and n2 represents the refractive index of the positive liquid crystal in the vertical state. The negative liquid crystal can refer to a liquid crystal material satisfying ε3<ε4, and n1<n2, wherein ε3 represents the dielectric constant of the negative liquid crystal in the horizontal state, ε4 represents the dielectric constant of the negative liquid crystal in the vertical state, n3 represents the refractive index of the negative liquid crystal in the horizontal state, and n4 represents the refractive index of the positive liquid crystal in the negative liquid crystal.

[0105] In the embodiments of the present disclosure, when the liquid crystal in the liquid crystal layer 24 includes positive liquid crystal, the liquid crystal in the first light path adjusting portion 241 can be kept in the horizontal state at all times, and the initial state of the liquid crystal in the second light path adjusting portion 242 is also in the horizontal state. The initial state of the liquid crystal in the second light path adjusting portion 242 can refer to the state of the liquid crystal in the second light path adjusting portion 242 when the first driving assembly 25 does not apply an electric field to the second light path adjusting portion 242. As described above, since the refractive index of the second light path adjusting portion 242 is substantially the same as the refractive index of the first light path adjusting portion 241 when the second light path adjusting portion 242 is in the second state, the liquid crystal in the second light path adjusting portion 242 can be in the initial state when the second light path adjusting portion 242 is in the second state, that is, the liquid crystal in the second light path adjusting portion 242 is in the horizontal state. When the first driving assembly 25 applies an electric field to the second light path adjusting portion 242, at least part of the liquid crystal in the second light path adjusting portion 242 can be in the vertical state, and since the liquid crystal in the first light path adjusting portion 241 is kept in the horizontal state at all times, the refractive index of the second light path adjusting portion 242 is smaller than the refractive index of the first light path adjusting portion 241 at this time, so that the light incident on the second light path adjusting portion 242 from the first light path adjusting portion 241 is deflected to narrow the light emitting angle. As described above, since the refractive index of the second light path adjusting portion 242 is smaller than the refractive index of the first light path adjusting portion 241 when the second light path adjusting portion 242 is in the first state, the first state can specifically refer to a state in which at least part of the liquid crystal in the second light path adjusting portion 242 is in the vertical state by applying an electric field when the liquid crystal in the liquid crystal layer 24 includes positive liquid crystal.

[0106] When the liquid crystal in the liquid crystal layer 24 comprises negative liquid crystal, the liquid crystal in the first light path adjusting portion 241 can be kept in the vertical state all the time, and the initial state of the liquid crystal in the second light path adjusting portion 242 is also the vertical state. When the second light path adjusting portion 242 is in the second state, the liquid crystal in the second light path adjusting portion 242 can be in the initial state, i.e., the liquid crystal in the second light path adjusting portion 242 is in the vertical state. When the first driving assembly 25 applies an electric field to the second light path adjusting portion 242, at least part of the liquid crystal in the second light path adjusting portion 242 can be in the horizontal state, and since the liquid crystal in the first light path adjusting portion 241 is kept in the vertical state all the time, the refractive index of the second light path adjusting portion 242 is smaller than that of the first light path adjusting portion 241 at this time, so that the light incident on the second light path adjusting portion 242 from the first light path adjusting portion 241 is deflected to narrow the light emitting angle. Therefore, when the liquid crystal in the liquid crystal layer 24 comprises negative liquid crystal, the first state can specifically refer to a state in which at least part of the liquid crystal in the second light path adjusting portion 242 is in the horizontal state by applying an electric field.

[0107] In some specific embodiments, the display panel further comprises a first alignment layer (not shown in the figure) disposed on the side of the liquid crystal layer 24 close to the first substrate 21 and a second alignment layer (not shown in the figure) disposed on the side of the liquid crystal layer 24 away from the first substrate 21, and the alignment angles of the first alignment layer and the second alignment layer are the same. In this way, when the first driving assembly 25 does not apply an electric field to the second light path adjusting portion 242, the liquid crystal in the second light path adjusting portion 242 can be in the initial state under the action of the first alignment layer and the second alignment layer.

[0108] In other specific embodiments, the liquid crystal in the liquid crystal layer 24 comprises a self-alignment liquid crystal material, so that when the first driving assembly 25 does not apply an electric field to the second light path adjusting portion 242, the liquid crystal in the second light path adjusting portion 242 can be in the initial state without the aid of the first alignment layer and the second alignment layer, so that the first alignment layer and the second alignment layer can be omitted, thereby simplifying the process steps.

[0109] In some specific embodiments, the orthographic projection of the first driving assembly 25 on the first substrate 21 is arranged apart from the orthographic projection of the first light path adjusting portion 241 on the first substrate 21, so as to prevent the electric field generated by the first driving assembly 25 from interfering with the liquid crystal in the first light path adjusting portion 241, and thereby the liquid crystal in the first light path adjusting portion 241 can be kept in the horizontal state (or the vertical state) all the time.

[0110] In some embodiments, the electrical signal provided to the first driving component 25 can include a direct current signal or an alternating current signal, and optionally, when the electrical signal provided to the first driving component 25 includes an alternating current signal, the voltage of the alternating current signal can be set to 1V to 50V. By providing the first driving component 25 with an alternating current signal, polarization of the liquid crystal in the second light path adjusting portion 242 can be prevented, and the service life of the second light path adjusting portion 242 can be prolonged.

[0111] In some embodiments, the first driving component 25 can include two plate-shaped electrodes arranged on opposite sides of the liquid crystal layer 24, or can include a slit electrode arranged on one side of the liquid crystal layer 24. First, the first driving component 25 including two plate-shaped electrodes will be described below. Figure 6

[0112] In the embodiments of the present disclosure, the display panel further includes a first electrode layer 291 arranged on the side of the liquid crystal layer 24 close to the first substrate 21, and a second electrode layer 292 arranged on the side of the liquid crystal layer 24 away from the first substrate 21. The first driving component 25 includes a first electrode 251 in the first electrode layer 291 and a second electrode 252 in the second electrode layer 292, and the first electrode 251 and the second electrode 252 both include plate-shaped electrodes. Optionally, the orthographic projection of the second electrode 252 on the first substrate 21 covers the orthographic projection of the first electrode 251 on the first substrate 21.

[0113] In the embodiments of the present disclosure, the orthographic projection of the second electrode 252 on the first substrate 21, the orthographic projection of the barrier wall 271 on the first substrate 21, the orthographic projection of the light absorbing portion 281 on the first substrate 21, and the orthographic projection of the second light path adjusting portion 242 on the first substrate 21 at least partially overlap. The material of the second electrode 252 can include a light-transmitting conductive material, so that the light rays emitted by the second light path adjusting portion 242 towards the second electrode 252 can pass through the second electrode 252 to be absorbed by the light absorbing portion 281. In this way, the second electrode 252 can be prevented from reflecting the light rays back to the second light path adjusting portion 242, so that multiple reflections of the light rays between the second electrode 252 and the first substrate 21 can be prevented, and problems such as color cast caused thereby can be avoided.

[0114] In the embodiments of the present disclosure, the area of the orthographic projection of the second electrode 252 on the first substrate 21 can be substantially the same as the area of the orthographic projection of the first electrode 251 on the first substrate 21. Alternatively, the area of the orthographic projection of the second electrode 252 on the first substrate 21 can be greater than the area of the orthographic projection of the first electrode 251 on the first substrate 21.

[0115] ​In some specific embodiments, the display panel further comprises a pixel circuit layer 26 disposed between the light emitting device layer 23 and the first substrate 21. The pixel circuit layer 26 comprises a first thin film transistor 31, and the light emitting device 231 is electrically connected to the first electrode of the first thin film transistor 311 through a first connecting electrode 321. The first connecting electrode 321 is disposed in the same layer as the first electrode 251 and is made of the same material.

[0116] It should be noted that, in the embodiments of the present disclosure, the same layer refers to being formed by the same patterning process. According to different specific patterns, one patterning process can include multiple exposure, development or etching processes, and the specific patterns in the formed layer structure can be continuous or discontinuous. These specific patterns can also be at different heights or have different thicknesses.

[0117] Optionally, the first electrode layer 291 is located on the side of the first alignment layer close to the first substrate 21, and the second electrode layer 292 is located on the side of the second alignment layer away from the first substrate 21.

[0118] In the embodiments of the present disclosure, the first thin film transistor 31 can comprise a light emitting control transistor in the pixel circuit, the first thin film transistor 31 can be electrically connected to a driving transistor, the driving transistor can generate a driving current in response to a voltage difference between its gate and source, and the first thin film transistor 31 can be configured to transmit the driving current generated by the driving transistor to the first connecting electrode 321 in response to the control of the light emitting control signal, and then transmit the driving current to the light emitting device 231 through the first connecting electrode 321 to drive the light emitting device 231 to emit light.

[0119] In the embodiments of the present disclosure, the area of the orthographic projection of the second electrode 252 on the first substrate 21 is greater than the area of the orthographic projection of the first electrode 251 on the first substrate 21, so that the area of the first electrode 251 can be as small as possible, preventing the layout of the first electrode 251 from affecting the first connecting electrode 321 and reducing the risk of short circuit of the first connecting electrode 321 or related circuit devices. On this basis, the area of the second electrode 252 can be as large as possible, so that the range of the electric field generated by the first driving assembly 25 is as large as possible, and the edge electric field in the electric field can make the liquid crystal it affects be in an inclined state between the vertical state and the horizontal state. When the light emitted by the first light path adjusting portion 241 passes through here, it will be deflected to a certain extent, and when this part of light reaches the second light path adjusting portion 242, it continues to be deflected, which is conducive to further narrowing the light emitting angle of the light emitting device 231, thereby better improving the problem of color mixing.

[0120] In the embodiment of the present disclosure, the pixel circuit layer 26 comprises a semiconductor layer 41, a gate insulating layer 42, a gate layer 43, an interlayer insulating layer 44, a source-drain metal layer 45, and an organic insulating layer 46. The active layer 41, the gate insulating layer 42, the gate layer 43, the interlayer insulating layer 44, the source-drain metal layer 45, and the organic insulating layer 46 are sequentially arranged between the first substrate 21 and the light-emitting device layer 23 in a direction gradually away from the first substrate 21. The active layer 311 of the first thin-film transistor 31 is located in the semiconductor layer 41, the gate 312 of the first thin-film transistor 31 is located in the gate layer 43, the first pole 3131 and the second pole 3132 of the first thin-film transistor are located in the source-drain metal layer 45, and the active layer 311 of the first thin-film transistor comprises a first pole connecting portion, a second pole connecting portion, and a channel portion located between the first pole connecting portion and the second pole connecting portion. The channel portion is arranged opposite to the gate 312. The first pole 3131 of the first thin-film transistor 31 is electrically connected to the first pole connecting portion through a first via hole penetrating the interlayer insulating layer 44 and the gate insulating layer 42, and the second pole 3132 of the first thin-film transistor 31 is electrically connected to the second pole connecting portion through a second via hole penetrating the interlayer insulating layer 44 and the gate insulating layer 42. The first connecting electrode 321 is electrically connected to the first pole 3131 of the first thin-film transistor 31 through a third via hole penetrating the organic insulating layer 46. Among the first pole 3131 and the second pole 3132 of the first thin-film transistor 31, one is a source electrode and the other is a drain electrode. Optionally, the second pole 3132 of the first thin-film transistor 31 can be electrically connected to the driving transistor, so that the first thin-film transistor can respond to the control of the light-emitting control signal to turn on the driving transistor and the first connecting electrode 321, and then transmit the driving current generated by the driving transistor to the first connecting electrode 321.

[0121] Optionally, the material of the active layer can include low-temperature polysilicon semiconductor and oxide semiconductor, etc.

[0122] Figure 7 Fig. 3 schematically shows a cross-sectional view of the display panel in the embodiment of the present disclosure, Figure 7 As shown in some specific embodiments, the second electrode 252 is electrically connected to the first voltage terminal, and the first electrode 251 is electrically connected to the second end 231a of the light-emitting device 231 and the second voltage terminal. Optionally, the first electrode layer 291 further comprises a second connecting electrode 322, and the second end 231a of the light-emitting device 231 can be electrically connected to the second voltage terminal through the second connecting electrode 322. The second voltage terminal can be a constant voltage terminal, such as a low voltage terminal VSS. In the embodiment of the present disclosure, the first voltage terminal can also be a constant voltage terminal, so as to generate a constant electric field between the first electrode 251 and the second electrode 252, so as to keep the second light path adjusting portion 242 in the first state.

[0123] Figure 8Fig. 5 schematically shows a cross-sectional view of a display panel in an embodiment of the present disclosure, and Figure 8 As shown in Fig. 5, in some embodiments, the second electrode 252 is electrically connected with the first voltage terminal, and the first electrode 251 is electrically connected with the first end 231b of the light-emitting device 231, so that whether the electric field is generated between the first electrode 251 and the second electrode 252 can be controlled by the electric signal provided to the first end 231b of the light-emitting device 231, so as to enable the second light path adjusting portion 242 to switch between the first state and the second state.

[0124] The first electrode 251 arranged in the above manner can enable the electric signal between the second end 231a (or the first end 231b) of the light-emitting device 231 and the first electrode 251 to be consistent, so as to avoid the problem that the liquid crystal deflection is disturbed due to the electric signal difference between the second end 231a of the light-emitting device 231 and the first electrode 251.

[0125] Figure 9 Fig. 5 schematically shows a cross-sectional view of a display panel in an embodiment of the present disclosure, and Figure 9 As shown in Fig. 5, the first driving assembly 25 includes a slit electrode is described below.

[0126] In some embodiments, the display panel further includes a third electrode layer 293 arranged on the side of the liquid crystal layer 24 close to the first substrate 21, and the first driving assembly 25 includes a third electrode 2931 located in the third electrode layer 293, the third electrode 2931 includes a first sub-electrode 2931a and a second sub-electrode 2931b arranged at intervals, and the first sub-electrode 2931a and the second sub-electrode 2931b constitute a slit electrode. The first driving assembly 25 is configured to generate an electric field in response to a first electric signal provided to the first sub-electrode 2931a and a second electric signal provided to the second sub-electrode 2932b, and the voltage of the first electric signal and the second electric signal is different.

[0127] In the embodiment of the present disclosure, after the driving signal is provided to the first driving assembly 25, the first driving assembly 25 forms an electric field, and the liquid crystal in the second light path adjusting portion 242 is deflected under the action of the horizontal component of the edge electric field in the electric field, so as to reduce the refractive index of the second light path adjusting portion 242, and further deflect the light rays incident to the second light path adjusting portion 242 from the first light path adjusting portion 241, so as to narrow the light-emitting angle of the light-emitting device 231. Optionally, the third electrode layer 293 is located on the side of the first alignment layer 331 close to the first substrate 21, and the first connecting electrode 321' and the second connecting electrode 322' can be located in the third electrode layer. It should be noted that the unexplained parts in the embodiment of the present disclosure can be referred to the foregoing embodiments, which will not be described here.

[0128] In some embodiments, the display panel further comprises a fourth electrode layer disposed on the side of the liquid crystal layer 24 away from the first substrate 21, and the first driving component 25 comprises a fourth electrode in the fourth electrode layer, and the fourth electrode comprises a slit electrode. Optionally, the fourth electrode layer 293 is disposed on the side of the second alignment layer 332 away from the first substrate 21. The display panel further comprises a fifth electrode layer disposed on the side of the liquid crystal layer 24 close to the first substrate 21, and the fifth electrode layer can be disposed on the side of the first alignment layer 331 close to the first substrate 21, and the first connecting electrode 321 can be disposed in the fifth electrode layer. In this way, the electrodes (i.e., the fourth electrode) of the first driving component 25 and the first connecting electrode are disposed in different layers, thereby better reducing the influence on the first connecting electrode wiring.

[0129] In some embodiments, the liquid crystal in the liquid crystal layer 24 comprises a first liquid crystal and a second liquid crystal, and the second liquid crystal is obtained by irradiating a photopolymer type liquid crystal material with ultraviolet light under a preset electric field. The second liquid crystal is configured to keep the long axis of the first liquid crystal in the second light path adjusting portion 242 in a preset direction, so that the second light path adjusting portion 242 is always in the first state.

[0130] In the embodiments of the present disclosure, after the cell assembly process of the display panel is completed, a preset electric field can be applied to the second light path adjusting portion 242 by the first driving component 25 to deflect the first liquid crystal and the second liquid crystal in the second light path adjusting portion 242. At this time, the active monomers in the liquid crystal molecules can be polymerized and crosslinked by ultraviolet irradiation curing to fix the arrangement of the first liquid crystal and the second liquid crystal. In this way, in subsequent use, no driving signal needs to be provided to the second light path adjusting portion 242, thereby reducing power consumption.

[0131] In some embodiments, the display panel further comprises a second substrate 51 disposed opposite to the first substrate 21, a color filter layer 52 and a black matrix layer 53 disposed on the side of the color conversion layer 22 close to the second substrate 51, wherein the black matrix layer 53 is provided with an opening, and the color filter layer 52 comprises a plurality of filter portions 521 disposed in the opening of the black matrix layer 53.

[0132] In some embodiments, the display panel further comprises an encapsulation layer 54 disposed on the side of the light absorbing layer 28 away from the second substrate 51, and the encapsulation layer 54 is used to encapsulate the encapsulation layer 54 and each film layer on the second substrate 51. The second electrode layer 292 in the above embodiments can be disposed on the side of the encapsulation layer 54 away from the second substrate 51.

[0133] In some embodiments, the display panel further comprises a sealant (not shown in the figure), the sealant is used to encapsulate the liquid crystal layer 24, and the thickness of the sealant can be large, so that the liquid crystal layer 24 has a large cell gap, thereby offsetting the problem of sagging in the middle region of the liquid crystal layer 24.

[0134] In some embodiments, the display panel further comprises a spacer layer 34 between the color conversion layer 22 and the first substrate 21. The spacer layer 34 comprises a plurality of spacers 341, the orthographic projection of the spacers 341 on the first substrate 21 is arranged apart from the orthographic projection of the first light path adjusting portion 241 on the first substrate 21, and the thickness of the spacers 341 can be 5 μm to 30 μm.

[0135] In the embodiments of the present disclosure, one end of the spacer 341 can be in contact with the first alignment layer, and the other end of the spacer 341 can be in contact with the second alignment layer. The spacer 341 can make the cell gap of the liquid crystal layer 24 uniform, so that the problem of sagging in the middle region of the liquid crystal layer 24 can be improved without making the cell gap of the liquid crystal layer 24 large, and the smaller cell gap is conducive to further improving the color mixing problem.

[0136] In summary, the display panel using the embodiments of the present disclosure can control the light emitting angle of the light emitting device 231 by using the first light path adjusting portion 241 and the second light path adjusting portion 242, so that the color mixing problem can be solved and the color purity can be improved when displaying a pure color picture, and when displaying mixed colors, the plurality of light emitting devices 231 can be used as a light source of a quantum dot 221, so that the display brightness can be improved and the display power consumption can be reduced.

[0137] Figure 10 Fig. 6 schematically shows a cross-sectional view of the display panel in the embodiments of the present disclosure, Figure 11 Fig. 7 schematically shows a cross-sectional view of the display panel in the embodiments of the present disclosure, Figure 10 The third liquid crystal in the third liquid crystal layer 24 comprises a polymer dispersed liquid crystal, Figure 11 The third liquid crystal in the third liquid crystal layer 24 comprises a network interpenetrating polymer liquid crystal. The following will be described in combination with Figure 10 and Figure 11 The present disclosure further describes the light rays that can be scattered from the first light path adjusting portion 241 to the second light path adjusting portion 242.

[0138] In some embodiments, the display panel further comprises a second driving component 61 disposed on the first substrate 21.

[0139] The liquid crystal in the first light path adjusting part 241 and the second light path adjusting part 242 includes a third liquid crystal. The third liquid crystal includes at least one of a polymer dispersed liquid crystal and a network interpenetrating polymer liquid crystal. The first light path adjusting part 241 has a third state and a fourth state. The first light path adjusting part 241 is configured to switch between the third state and the fourth state in response to an electric field applied by the second driving component 61.

[0140] When the first light path adjusting part 241 is in the third state and the second light path adjusting part 242 is in the first state, the third liquid crystal in the first light path adjusting part 241 is in an ordered arrangement, and the third liquid crystal in the second light path adjusting part 242 is in a disordered arrangement, so that the light incident from the first light path adjusting part to the second light path adjusting part 242 is scattered. When the first light path adjusting part 241 is in the fourth state and the second light path adjusting part 242 is in the first state, the third liquid crystal in the second light path adjusting part 242 and the third liquid crystal in the first light path adjusting part are both in a disordered arrangement.

[0141] In the embodiments of the present disclosure, when the third liquid crystal in the first light path adjusting part 241 is in an ordered arrangement, the first light path adjusting part 241 can transmit light, for example, the long axis direction of the third liquid crystal is the same as the thickness direction of the display panel, that is, the long axis direction of the third liquid crystal is perpendicular to the plane of the first substrate 21. When the third liquid crystal in the second light path adjusting part 242 is in a disordered arrangement, the light incident from the first light path adjusting part to the second light path adjusting part 242 can be scattered. Through reasonable configuration, the second light path adjusting part 242 can be opaque, so that the light incident from the first light path adjusting part to the second light path adjusting part 242 cannot pass through the second light path adjusting part 242, thereby preventing the occurrence of color mixing problems.

[0142] It should be noted that in the embodiments of the present disclosure, in addition to being scattered, the light incident from the first light path adjusting part 241 to the second light path adjusting part 242 can also be reflected, which depends on the actual configuration of the third liquid crystal in the second light path adjusting part 242, and can be determined as needed.

[0143] In some specific embodiments, the display panel further includes a fourth electrode layer disposed on the side of the liquid crystal layer 24 away from the first substrate 21 and a pixel circuit layer disposed between the light emitting device layer 23 and the first substrate 21. The second driving component 61 includes a fourth electrode 611 in the fourth electrode layer. The fourth electrode 611 is electrically connected to a third voltage terminal. The third voltage terminal is a constant voltage terminal.

[0144] The pixel circuit layer 26 includes a first thin film transistor 31, the first end 231b of the light emitting device 231 is electrically connected to the first thin film transistor 31, and the second end 231a of the light emitting device 231 is electrically connected to the fourth voltage terminal. Optionally, the fourth voltage terminal is a constant voltage terminal.

[0145] Optionally, the light emitting device 231 can include a plurality of stacked film layers, wherein the plurality of film layers include a first light emitting electrode layer and a second light emitting electrode layer, the first end 231b of the light emitting device 231 can be electrically connected to the first light emitting electrode layer, and the second end 231a of the light emitting device 231 can be electrically connected to the second light emitting electrode layer.

[0146] Optionally, the first end 231b of the first light emitting electrode layer can be located on the side of the second end 231a of the second light emitting electrode layer close to the first substrate 21. At this time, since the second end 231a of the second light emitting electrode layer is closer to the fourth electrode 611, and the second light emitting electrode layer is electrically connected to the second end 231a of the light emitting device 231, the second driving assembly 61 can be configured to generate an electric field in response to the voltage difference between the fourth electrode 611 and the second end 231a of the light emitting device 231. In this way, after the display panel is powered on, since the third voltage terminal and the fourth voltage terminal are both constant voltage terminals, a constant electric field can be generated between the second end 231a of the second light emitting electrode layer of the light emitting device 231 and the fourth electrode 611, so that the first light path adjusting part 241 can remain in the third state after being switched to the third state.

[0147] Optionally, the first end 231b of the first light emitting electrode layer can be located on the side of the second end 231a of the second light emitting electrode layer away from the first substrate 21. At this time, since the first end 231b of the first light emitting electrode layer is closer to the fourth electrode 611, and the first light emitting electrode layer is electrically connected to the first end 231b of the light emitting device 231, the second driving assembly 61 can be configured to generate an electric field in response to the voltage difference between the fourth electrode 611 and the first end 231b of the light emitting device 231. In this way, after the display panel is powered on, when the first end 231b of the light emitting device 231 receives the driving signal transmitted by the first thin film transistor 31, the light emitting device 231 emits light, and at the same time, an electric field is generated between the first end 231b of the first light emitting electrode layer of the light emitting device 231 and the fourth electrode 611, so that the first light path adjusting part 241 is switched to the third state only when the light emitting device 231 emits light, thereby reducing power consumption.

[0148] It should be noted that the unexplained in the embodiments of the present disclosure can refer to the foregoing embodiments, for example, the structures of the color conversion layer 22 and the barrier wall layer 27 can be the same as those of the foregoing embodiments, and will not be described here.

[0149] The present disclosure also provides a display device including the above-described display panel.

[0150] In other embodiments of the present disclosure, the display device can include a tablet personal computer (PC), a smart phone, a personal digital assistant (PDA), a portable multimedia player, a game console, or a wrist watch type electronic device, etc. However, embodiments of the present disclosure are not intended to limit the type of the display device. In some exemplary embodiments, the display device can be used not only in a large electronic device such as a television (TV) or an external billboard, but also in a medium or small electronic device such as a PC, a notebook computer, a car navigation device, or a camera.

[0151] The above-described embodiments of the present disclosure have been described. However, these embodiments are merely for illustrative purposes and are not intended to limit the scope of the present disclosure. Although each embodiment has been described above, this does not mean that measures in each embodiment cannot be advantageously used in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Those skilled in the art who possess the present disclosure can make various substitutions and modifications without departing from the scope of the present disclosure, and such substitutions and modifications should fall within the scope of the present disclosure.

Claims

1. A display panel, wherein, include: First substrate; A color conversion layer disposed on the first substrate; A light-emitting device layer disposed between the first substrate and the color conversion layer; as well as, A liquid crystal layer disposed between the light-emitting device layer and the color conversion layer; Wherein, the light-emitting device layer includes a light-emitting device, and the liquid crystal layer includes a first optical path adjustment portion and a second optical path adjustment portion disposed at intervals, wherein the orthographic projection of the first optical path adjustment portion on the first substrate at least partially overlaps with the orthographic projection of the light-emitting device on the first substrate, and the orthographic projection of the second optical path adjustment portion on the first substrate is disposed at intervals from the orthographic projection of the light-emitting device on the first substrate; and... The second optical path adjustment section has at least a first state. When the second optical path adjustment section is in the first state, the light emitted by the light-emitting device that passes through the first optical path adjustment section and is incident on the second optical path adjustment section is refracted to narrow the light emission angle of the light-emitting device, or the light emitted from the first optical path adjustment section to the second optical path adjustment section is scattered at least once. The display panel further includes: a first driving component disposed on the first substrate; wherein the second optical path adjustment section has a first state and a second state, and the second optical path adjustment section is configured to: switch between the first state and the second state in response to an electric field applied by the first driving component; when the second optical path adjustment section is in the first state, the refractive index of the second optical path adjustment section is less than the refractive index of the first optical path adjustment section, so that light incident from the first optical path adjustment section to the second optical path adjustment section is refracted; when the second optical path adjustment section is in the second state, the refractive index of the second optical path adjustment section is approximately the same as the refractive index of the first optical path adjustment section; or, the display panel further includes: a second driving component disposed on the first substrate; wherein the first optical path adjustment section... The liquid crystals in both the first and second light path adjustment units include third liquid crystals. The first light path adjustment unit has a third state and a fourth state. The first light path adjustment unit is configured to switch between the third state and the fourth state in response to an electric field applied by the second driving component. When the first light path adjustment unit is in the third state and the second light path adjustment unit is in the first state, the third liquid crystals in the first light path adjustment unit are arranged in an ordered manner, and the third liquid crystals in the second light path adjustment unit are arranged in a disordered manner, so that light incident from the first light path adjustment unit to the second light path adjustment unit is scattered. When the first light path adjustment unit is in the fourth state and the second light path adjustment unit is in the first state, the third liquid crystals in both the second light path adjustment unit and the first light path adjustment unit are arranged in a disordered manner.

2. The display panel according to claim 1, wherein, The orthographic projection of the first driving component on the first substrate is spaced apart from the orthographic projection of the first optical path adjustment part on the first substrate.

3. The display panel according to claim 1, wherein, The display panel also includes: A first electrode layer is disposed on the side of the liquid crystal layer near the first substrate. A second electrode layer is disposed on the side of the liquid crystal layer opposite to the first substrate. The first driving component includes a first electrode located in the first electrode layer and a second electrode located in the second electrode layer.

4. The display panel according to claim 3, wherein, The display panel further includes a pixel circuit layer disposed between the light-emitting device layer and the first substrate. The pixel circuit layer includes a first thin-film transistor, and the first end of the light-emitting device is electrically connected to the first electrode of the first thin-film transistor through a first connection electrode. The first connecting electrode is disposed in the same layer as the first electrode and is made of the same material.

5. The display panel according to claim 4, wherein, The second electrode is electrically connected to the first voltage terminal, and the first electrode is electrically connected to the second terminal and the second voltage terminal of the light-emitting device; or, The second electrode is electrically connected to the first voltage terminal, and the first electrode is electrically connected to the first terminal of the light-emitting device.

6. The display panel according to claim 1, wherein, The display panel further includes a third electrode layer disposed on the side of the liquid crystal layer near the first substrate, and the first driving component includes a third electrode located in the third electrode layer, the third electrode including a first sub-electrode and a second sub-electrode disposed at intervals. The first driving component is configured to generate the electric field in response to a first electrical signal provided to the first sub-electrode and a second electrical signal provided to the second sub-electrode.

7. The display panel according to claim 1, wherein, The electrical signals provided to the first drive component include AC signals.

8. The display panel according to claim 1, wherein, The liquid crystal in the second optical path adjustment unit includes a first liquid crystal and a second liquid crystal. The second liquid crystal is obtained by irradiating a photopolymer type liquid crystal material with ultraviolet light under a preset electric field. The second liquid crystal is configured such that the long axis of the first liquid crystal is kept in a preset direction, so that the second optical path adjustment unit is always in the first state.

9. The display panel according to claim 1, wherein, The display panel further includes a fourth electrode layer disposed on the side of the liquid crystal layer facing away from the first substrate and a pixel circuit layer disposed between the light-emitting device layer and the first substrate. The second driving component includes a fourth electrode located in the fourth electrode layer, and the fourth electrode is electrically connected to a third voltage terminal. The pixel circuit layer includes a first thin-film transistor, the first end of the light-emitting device is electrically connected to the first thin-film transistor, and the second end of the light-emitting device is electrically connected to a fourth voltage terminal. The second driving component is configured to generate an electric field in response to a voltage difference between the fourth electrode and the first terminal of the light-emitting device; or, in response to a voltage difference between the fourth electrode and the second terminal of the light-emitting device, generate an electric field.

10. The display panel according to claim 1, wherein, The third liquid crystal includes at least one of polymer-dispersed liquid crystal and interpenetrating polymer network liquid crystal.

11. The display panel according to any one of claims 1 to 8, wherein, The display panel also includes: A barrier layer disposed on the first substrate; The color conversion layer comprises a plurality of quantum dots of different colors, and the barrier layer comprises a barrier that separates the plurality of quantum dots from each other; and, The second optical path adjustment unit is configured such that when the second optical path adjustment unit is in the first state, the light rays incident from the first optical path adjustment unit to the second optical path adjustment unit are emitted toward the barrier wall.

12. The display panel according to claim 11, wherein, The display panel includes the first driving component as described in claim 1; When the second optical path adjustment unit is in the second state, at least a portion of the light rays incident from the first optical path adjustment unit to the second optical path adjustment unit are emitted toward at least one of the quantum dots.

13. The display panel according to claim 11, wherein, The barrier includes a reflective material, and the display panel further includes: A light-absorbing layer disposed on the side of the barrier layer near the first substrate. The light-absorbing layer includes a light-absorbing portion, and the orthographic projection of the light-absorbing portion on the first substrate overlaps at least partially with the orthographic projection of the barrier on the first substrate.

14. The display panel according to claim 13, wherein, The light-absorbing portion includes a plurality of color resists stacked in the thickness direction of the display panel, wherein different color resists are of different colors; or, The light-absorbing section includes a black matrix.

15. The display panel according to any one of claims 1 to 10, wherein, The light-emitting device includes a micro light-emitting diode.

16. The display panel according to any one of claims 1 to 10, wherein, The display panel further includes a first alignment layer disposed on the side of the liquid crystal layer near the first substrate and a second alignment layer disposed on the side of the liquid crystal layer away from the first substrate, wherein the alignment angles of the first alignment layer and the second alignment layer are the same; or... The liquid crystal in the liquid crystal layer includes a self-aligned liquid crystal material.

17. The display panel according to any one of claims 1 to 10, wherein, The display panel further includes a spacer layer located between the color conversion layer and the first substrate. The spacer layer includes spacers, and the orthographic projection of the spacers on the first substrate is spaced apart from the orthographic projection of the first optical path adjustment part on the first substrate.

18. A display device, wherein, Includes the display panel as described in any one of claims 1 to 17.

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