Display panel and color film substrate

Abstract

A display panel is disclosed. The display panel has a plurality of overlapping pixel cells. At least one pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel that display different colors. The display panel includes a first base substrate, a light-emitting element layer, a color filter layer, a color conversion layer, a touch function layer, and a light adjustment layer. The light-emitting element layer is located on one side of the first base substrate. The light-emitting element layer includes a first light-emitting element, a second light-emitting element, and a third light-emitting element. The color filter layer is located on a side of the light-emitting element layer away from the first base substrate, and includes at least a first light-shielding pattern, a first color filter, and a second color filter. The color conversion layer is located between the light-emitting element layer and the color filter layer. The color conversion layer includes a first color conversion pattern, a second color conversion pattern, and a light-transmitting pattern. The touch function layer is located on a side of the color conversion layer away from the first base substrate.

Description

[Technical field]

[0001] The present disclosure relates to the field of display technology, and in particular to display panels and color film substrates. [Background technology]

[0002] 2. Description of the Related Art With the continuous development of electronic products, display panels with display functions are widely applied in people's life and work, providing people with convenience. Summary of the Invention [Means for solving the problem]

[0003] In one embodiment, a display panel is provided, the display panel having a plurality of overlapping pixel cells, at least one pixel unit including a first sub-pixel, a second sub-pixel, and a third sub-pixel for displaying different colors, the display panel including a first base substrate, a light emitting element layer, a color filter layer, a color conversion layer, a touch function layer, and a light adjustment layer.

[0004] The light emitting element layer is disposed on one side of the first base substrate, and the light emitting structure layer includes a first light emitting element, a second light emitting element, and a third light emitting element, the first light emitting element being disposed in a first sub-pixel, the second light emitting element being disposed in a second sub-pixel, and the third light emitting element being disposed in a third sub-pixel.

[0005] The color filter layer is located on a side of the light emitting element layer away from the first base substrate and includes at least a first light shielding pattern, a first color filter, and a second color filter. The first light shielding pattern defines a plurality of light transmitting regions. The light transmitting regions include a first light transmitting region corresponding to the first sub-pixel, a second light transmitting region corresponding to the second sub-pixel, and a third light transmitting region corresponding to the third sub-pixel.

[0006] The color conversion layer is located between the light emitting element layer and the color filter layer. The color conversion layer includes a first color conversion pattern, a second color conversion pattern, and a light transmission pattern. The first color conversion pattern is located in the first sub-pixel, the second color conversion pattern is located in the second sub-pixel, and the light transmission pattern is located in the third sub-pixel.

[0007] The touch function layer is located on the side of the color conversion layer away from the first base substrate.

[0008] The light adjustment layer is located on a side of the touch function layer away from the first base substrate, and a normal projection of the light adjustment layer on the first base substrate overlaps with at least the third light-transmitting region, the light adjustment layer includes first particles and second particles, the first particles include dye molecules, and the second particles have a hollow structure.

[0009] In some embodiments, the orthogonal projection of the light adjusting layer onto the first base substrate overlaps only with the third light transmitting area.

[0010] In some embodiments, the display panel further comprises a transparent resin filled pattern disposed in the same layer as the light adjustment layer, the transparent resin filled pattern overlapping the first light transmitting region and the second light transmitting region.

[0011] In some embodiments, the light modulating layer has a single layer structure, and the light modulating layer includes a mixture of the first particles and the second particles.

[0012] In some embodiments, the light modulating layer includes a first light modulating layer and a second light modulating layer stacked together, the first light modulating layer including the first particles, and the second light modulating layer including the second particles.

[0013] In some embodiments, the first light adjustment layer is located on a side of the touch function layer away from the first base substrate, and the second light adjustment layer is located between the first light adjustment layer and the touch function layer.

[0014] In some embodiments, the first light adjustment layer is located on a side of the touch function layer away from the first base substrate, and the second light adjustment layer is located on a side of the first light adjustment layer away from the touch function layer.

[0015] In some embodiments, the orthogonal projection of the first light adjusting layer onto the first base substrate overlaps only with the third light transmitting region.

[0016] In some embodiments, an orthogonal projection of the second light adjusting layer onto the first base substrate overlaps with each of the first light transmissive region, the second light transmissive region, and the third light transmissive region.

[0017] In some embodiments, the second light adjusting layer has a continuous film structure.

[0018] In some embodiments, the light adjusting layer further includes a second light blocking pattern, the second light blocking pattern being located in a light blocking area that does not overlap the first light transmitting area, the second light transmitting area, and the third light transmitting area.

[0019] In some embodiments, a thickness of the second light blocking pattern in a direction perpendicular to the display panel is equal to or smaller than a thickness of the first light adjustment layer in a direction perpendicular to the display panel.

[0020] In some embodiments, the second light adjusting layer includes a plurality of first patterns, a second pattern, and a third pattern separated from each other. The first pattern is located in the first light transmitting region, the second pattern is located in the second light transmitting region, and the third pattern is located in the third light transmitting region. A thickness of the second light blocking pattern in a direction perpendicular to the display panel is approximately equal to a thickness of the first pattern and / or a thickness of the second pattern in a direction perpendicular to the display panel, and approximately equal to a sum of a thickness of the third pattern and the first light adjusting layer in a direction perpendicular to the display panel.

[0021] In some embodiments, the light adjusting layer and the color filter layer are provided in the same layer.

[0022] In some embodiments, the colour of the dye molecules is the same as the colour of the third sub-pixel.

[0023] In some embodiments, the hollow structure of the second particle is spherical and includes an air-filled core component and a shell component surrounding the core component.

[0024] In some embodiments, the second particles have an average diameter of about 10 nm to about 200 nm.

[0025] In some embodiments, the material of the shell component is organic and includes at least one of an acrylic polymer, a polyimide, a urethane polymer, a styrene polymer, a siloxane polymer, and an epoxy polymer.

[0026] In some embodiments, the material of the shell component is inorganic and includes at least one of SiO2, MgF2, TiO2, ZrO2, Al2O3, In2O3, ZnO, SnO2, Sb2O3, Fe3O4, and ITO.

[0027] In some embodiments, the first color conversion pattern and the second color conversion pattern include quantum dot material and scattering particles.

[0028] In some embodiments, the quantum dot material is a cadmium-free material.

[0029] In some embodiments, the core material of the quantum dot material is InP and the shell material is a stack of ZnSe and ZnS (ZnSe / ZnS), or the core material of the quantum dot material is ZnTeSe and the shell material is a stack of ZnSe and ZnS (ZnSe / ZnS).

[0030] In some embodiments, the thickness of the first color conversion pattern and the thickness of the second color conversion pattern are between 5 μm and 30 μm.

[0031] In some embodiments, the touch functional layer comprises a metal mesh structure.

[0032] In some embodiments, the display panel further comprises a light extraction layer and a packaging layer, the light extraction layer being located on a side of the light emitting element layer away from the first base substrate, and the packaging layer being located on a side of the light extraction layer away from the first base substrate.

[0033] In some embodiments, the display panel further comprises a second base substrate, the second base substrate being located on a side of the light adjustment layer remote from the first base substrate.

[0034] In some embodiments, the second base substrate directly contacts the light conditioning layer.

[0035] In some embodiments, the display panel further comprises a first cover layer and a second cover layer located on either side of the color conversion layer.

[0036] In another aspect, a color film substrate is provided, which comprises a base substrate, a color filter layer, a color conversion layer, a touch function layer, and a light adjustment layer.

[0037] The color filter layer is located on the base substrate and includes at least a first light-shielding pattern, a first color filter, and a second color filter. The first light-shielding pattern defines a plurality of light-transmitting regions. The light-transmitting regions include a first light-transmitting region for transmitting light of a first color, a second light-transmitting region for transmitting light of a second color, and a third light-transmitting region for transmitting light of a third color.

[0038] The color conversion layer is located on a side of the color filter layer away from the substrate, and includes a first color conversion pattern, a second color conversion pattern, and a light transmission pattern.

[0039] The touch function layer is located between the color conversion layer and the base substrate.

[0040] The light adjustment layer is located between the touch function layer and the base substrate. The orthogonal projection of the light adjustment layer on the base substrate overlaps at least the third light-transmitting region. The light adjustment layer includes first particles and second particles. The first particles include dye molecules. The second particles have a hollow structure.

[0041] In some embodiments, the light adjustment layer includes a dye molecule film having the dye molecules and a hollow particle film having the hollow particles, the dye molecule film being located on a side of the hollow particle film closer to the first base substrate, or the hollow particle film being located on a side of the dye molecule film closer to the first base substrate.

[0042] In some embodiments, the orthogonal projection of the light adjusting layer onto the base substrate overlaps only with the third light transmissive region.

[0043] In some embodiments, the color film substrate further comprises a transparent resin-filled pattern disposed in the same layer as the light adjustment layer, the transparent resin-filled pattern overlapping the first light-transmitting region and the second light-transmitting region.

[0044] In some embodiments, the light modulating layer has a single layer structure, and the light modulating layer includes a mixture of the first particles and the second particles.

[0045] In some embodiments, the light modulating layer includes a first light modulating layer and a second light modulating layer stacked together, the first light modulating layer including the first particles, and the second light modulating layer including the second particles.

[0046] In some embodiments, the second light modulating layer is located between the first light modulating layer and the touch function layer.

[0047] In some embodiments, the first light modulating layer is located between the second light modulating layer and the touch function layer.

[0048] In some embodiments, the orthogonal projection of the first light adjusting layer onto the base substrate overlaps only with the third light transmitting region.

[0049] In some embodiments, an orthogonal projection of the second light adjusting layer onto the base substrate overlaps with each of the first light transmissive region, the second light transmissive region, and the third light transmissive region.

[0050] In some embodiments, the second light adjusting layer has a continuous film structure.

[0051] In some embodiments, the light adjustment layer further includes the second light blocking pattern, which is located in a light blocking area that does not overlap the first light transmitting area, the second light transmitting area, and the third light transmitting area.

[0052] In some embodiments, the second light-blocking pattern has a thickness in a direction perpendicular to the color film substrate that is equal to or smaller than the thickness of the first light-adjusting layer in a direction perpendicular to the color film substrate.

[0053] In some embodiments, the second light adjusting layer includes a plurality of first patterns, a second pattern, and a third pattern separated from each other. The first pattern is located in the first light transmitting region, the second pattern is located in the second light transmitting region, and the third pattern is located in the third light transmitting region. The thickness of the second light blocking pattern along a direction perpendicular to the color film substrate is approximately equal to the thickness of the first pattern and / or the second pattern along a direction perpendicular to the color film substrate, and approximately equal to the sum of the thicknesses of the third pattern and the first light adjusting layer along a direction perpendicular to the color film substrate.

[0054] In some embodiments, the light adjusting layer and the color filter layer are provided in the same layer. [Brief description of the drawings]

[0055] In order to more clearly describe the invention in the present disclosure, the drawings used in some embodiments of the present disclosure are briefly described below. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, but are not limited to the actual dimensions of the products, the actual processes of the methods, and the actual timing of the signals according to the embodiments of the present disclosure. [Figure 1] FIG. 1 is a perspective view of a display panel according to some embodiments. [Diagram 2] FIG. 2 is a cross-sectional view taken along line a-a' in FIG. [Diagram 3] 1 is a plan view of a light emitting substrate according to some embodiments. [Figure 4] FIG. 2 is a plan view of a color conversion substrate according to some embodiments. [Diagram 5] FIG. 1 is a comparison diagram of the luminance attenuation of blue light due to the microcavity effect and the luminance attenuation of light emitted from a quantum dot film at different angles. [Figure 6] 1 is a cross-sectional view of a display panel according to some embodiments. [Figure 7] 1 is a structural diagram of a light-emitting device according to some embodiments; [Figure 8] 2 is another structural diagram of a light-emitting device according to some embodiments; [Figure 9] 2 is another structural diagram of a light-emitting device according to some embodiments; [Figure 10A] FIG. 2 is a diagram illustrating a configuration of a first color transformation pattern according to some embodiments. [Figure 10B] FIG. 11 is a diagram illustrating a configuration of a second color transformation pattern according to some embodiments. [Figure 11] 1 is a structural diagram of a light-transmitting pattern according to some embodiments; [Figure 12] FIG. 2 is a top view of a touch function layer according to some embodiments. [Figure 13] FIG. 2 is another top view of a touch function layer according to some embodiments. [Figure 14] 1 is a cross-sectional view of a color conversion substrate according to some embodiments. [Figure 15] FIG. 2 is a structural diagram of a light conversion layer according to some embodiments. [Figure 16] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 17] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 18] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 19] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 20] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 21] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 22] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 23] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 24] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Diagram 25] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 26] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 27] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 28] FIG. 2 is another cross-sectional view of a display panel according to some embodiments. [Figure 29] 1 is a comparison diagram of light extraction efficiency from the front with different refractive indices. [Diagram 30] FIG. 1 is a comparison diagram of the photoconversion efficiency of blue light by quantum dots at different wavelengths. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0056] Hereinafter, some embodiments of the present disclosure will be described clearly and completely with reference to the drawings. Of course, the embodiments described herein are only a part of the embodiments of the present disclosure, and are not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments that can be conceived by a person skilled in the art shall be included in the scope of protection of the present disclosure.

[0057] Unless otherwise indicated by the context, in the present specification and claims, the term "comprise" and other forms, such as the third person singular "comprises" and the present participle form "comprising" should be interpreted in an open, inclusive sense, i.e., "including but not limited to." In the description of the specification, the terms "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," "some examples," and the like, are intended to indicate that a particular feature, structure, material, or characteristic associated with this embodiment or the examples is included in at least one embodiment or example of the present disclosure. General expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, a particular feature, structure, material, or characteristic described may be included in any one or more embodiments or examples in any suitable manner.

[0058] In the following, the terms "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying the relative importance or quantity of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0059] In describing some embodiments, the term "electrically connected," "connected," and derivatives thereof may be used. For example, in describing some embodiments, the term "electrically connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other.

[0060] "A and / or B" includes three combinations: a only, B only, and a combination of A and B.

[0061] In this specification, the use of "disposed to" is intended to be open and inclusive language and does not exclude devices adapted or arranged to perform additional tasks or steps.

[0062] Moreover, use of the term "based on" denotes open and inclusive language, such that a process, step, calculation, or other action that is "based on" one or more conditions or values ​​may, in fact, be based on additional conditions or values ​​beyond the conditions.

[0063] As used herein, "approximate" or "approximately" includes a stated value and an average within an acceptable range of deviation of a particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art considering the measurement and the error associated with measuring a particular quantity (i.e., limitations of the measurement system).

[0064] Exemplary embodiments are described herein with reference to cross-sectional and / or plan views that are idealized exemplary drawings. In the drawings, thicknesses of layers and regions are exaggerated for clarity. Thus, variations in shape relative to the drawings due, for example, to manufacturing techniques and / or tolerances are expected. Thus, the exemplary embodiments are not limited to the shapes of regions shown herein, but should be construed to include shape deviations that result, for example, from manufacturing. For example, an etched region shown with a rectangular shape typically has curved features. Thus, the regions shown in the drawings are schematic in nature, and the shapes are not intended to represent the actual shape of a region within a device and are not intended to limit the scope of the exemplary embodiments.

[0065] FIG. 1 is a perspective view of a display panel DP according to some embodiments. FIG. 2 is a schematic cross-sectional view along line a-a' of the display panel DP in the embodiment shown in FIG. 1. As shown in FIGS. 1 and 2, the display panel DP includes a light-emitting substrate LS and a color conversion substrate CS. The display panel DP includes a display area DA for displaying an image and a non-display area NDA for not displaying an image. The non-display area NDA is located outside the display area DA. In some examples, the non-display area NDA may surround the display area DA or may be located outside the display area DA in at least one direction. The display panel DP further includes a sealing layer SL for sealing the light-emitting substrate LS and the color conversion substrate CS, and a filling layer FL filled between the light-emitting substrate LS and the color conversion substrate CS.

[0066] The display panel DP may be rectangular, circular, elliptical, diamond, trapezoidal, square, in plan view, or of other shapes depending on the display requirements.

[0067] The display panel DP may be applied to various electronic devices such as tablets, smartphones, head-mounted displays, car navigation units, cameras, central information displays (CIDs) provided in vehicles, wristwatch-type electronic devices, or other wearable devices, small and medium-sized electronic devices such as personal digital assistants (PDAs), portable multimedia players (PMPs) and game consoles, home appliances including televisions, external signs, monitors, and displays, and medium and large-sized electronic devices such as personal computers and laptop computers. The above-mentioned electronic devices may only show application examples of the display device 1. In addition, a person skilled in the art can recognize that the display panel DP can be applied to other devices without departing from the spirit and scope of the present disclosure.

[0068] The color conversion substrate CS may be disposed opposite to the light emitting substrate LS. The color conversion substrate CS may include a color conversion structure for converting the color of incident light. The color conversion pattern may include at least one of a color filter and a wavelength conversion pattern.

[0069] The sealing layer SL may be located between the light-emitting substrate LS and the color-conversion substrate CS, and may be located within the non-display area NDA. The sealing layer SL may be disposed along the edges of the light-emitting substrate LS and the color-conversion substrate CS in the non-display area NDA, so that the sealing layer SL surrounds or is located at the periphery of the display area DA in a plan view. The sealing layer SL may be formed of an organic material such as an epoxy resin, but is not limited thereto.

[0070] The filling layer FL may be located in and fill a space surrounded by the sealing layer SL between the light-emitting substrate LS and the color-converting substrate CS. The filling layer FL may be made of a material capable of transmitting light. The filling layer FL may be made of an organic material such as, but not limited to, a silicon-based organic material or an epoxy-based organic material. In some embodiments, the filling layer FL may be omitted.

[0071] As shown in Fig. 1, the display panel DP has a number of overlapping pixel units PU. At least one pixel unit PU includes a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3 that display different colors. Each sub-pixel has a structure located on one side of the light-emitting substrate LS and a structure located on one side of the color-converting substrate CS.

[0072] Fig. 3 shows a plan view of the light-emitting substrate in the display area of ​​the display panel shown in Fig. 1 and Fig. 2. As shown in Fig. 3, the light-emitting areas LA1, LA2, LA3, LA4, LA5, LA6 and the non-light-emitting area NLA may be limited to the display area DA of the light-emitting substrate LS. The light emitted from the light-emitting areas LA1, LA2, LA3, LA4, LA5, LA6 to the outside of the light-emitting substrate LS may be emitted light having a specific central wavelength. For example, the emitted light may be blue light and have a peak wavelength within a range of about 440 nm to about 480 nm.

[0073] The light-emitting substrate LS is a substrate for displaying the nth row R n The light-emitting areas LA1, LA2, and LA3 in the n+1th row R n+1 The light-emitting substrate LS includes light-emitting regions LA4, LA5, and LA6 arranged in the n-th row R n In the n+1-th row R, the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 may be sequentially overlapped in the first direction DR1. n+1 In the embodiment, the fourth light-emitting region LA4, the fifth light-emitting region LA5, and the sixth light-emitting region LA6 may be sequentially provided to overlap each other in the first direction DR1.

[0074] One overlapping light-emitting area unit corresponds to one overlapping pixel unit. n In the first light-emitting region LA1 of the first sub-pixel PX1, the second light-emitting region LA2 of the second sub-pixel PX2, and the third light-emitting region LA3 of the third sub-pixel PX3 are sequentially arranged in the first direction DR1.

[0075] In one overlapping light-emitting area unit, the nth row R nIn the first direction DR1, the first light-emitting region LA1 has a first width WL1, the second light-emitting region LA2 has a second width WL2, and the third light-emitting region LA3 has a third width WL3. Here, the first width WL1, the second width WL2, and the third width WL3 may be the same or different from each other. The present disclosure is not limited thereto.

[0076] In an exemplary embodiment, the first width WL1 of the first light-emitting region LA1 may be larger than the second width WL2 of the second light-emitting region LA2 and the third width WL3 of the third light-emitting region LA3. Or, for example, the second width WL2 of the second light-emitting region LA2 may be larger than the third width WL3 of the third light-emitting region LA3. Thus, the area of ​​the first light-emitting region LA1 may be larger than the area of ​​the second light-emitting region LA2 and the area of ​​the third light-emitting region LA3, and the area of ​​the second light-emitting region LA2 may be larger than the area of ​​the third light-emitting region LA3.

[0077] In an exemplary embodiment, the first width WL1 of the first light-emitting region LA1, the second width WL2 of the second light-emitting region LA2, and the third width WL3 of the third light-emitting region LA3 may be approximately the same. Therefore, the area of ​​the first light-emitting region LA1, the area of ​​the second light-emitting region LA2, and the area of ​​the third light-emitting region LA3 may be approximately the same.

[0078] Similarly, in one overlapping light-emitting area unit, the adjacent n+1th row R n+1 In the n-th row R, the fourth light emitting region LA4, the fifth light emitting region LA5, and the sixth light emitting region LA6 are n The first light emitting region LA1, the second light emitting region LA2, and the third light emitting region LA3 may have substantially the same structure as each of the first light emitting region LA1, the second light emitting region LA2, and the third light emitting region LA3.

[0079] Fig. 4 shows a plan view of the color conversion substrate in the display area of ​​the display panel shown in Fig. 1 and Fig. 2. As shown in Fig. 4, light-transmitting areas TA1, TA2, TA3, TA4, TA5, TA6 and light-blocking area BA may be defined in the display area DA of the color conversion substrate CS. In the light-transmitting areas TA1, TA2, TA3, TA4, TA5, TA6, the light emitted from the light-emitting substrate LS may pass through the color conversion substrate CS and be supplied to the outside of the display panel DP. In the light-blocking area BA, the light emitted from the display substrate 10 cannot be transmitted to the outside of the display panel DP.

[0080] The color conversion substrate CS is a pixel on the nth row R in the display area DA. n The light transmitting areas TA1, TA2, and TA3 provided in the adjacent n+1th row R n+1 In the color conversion substrate CS, the nth row R n In the n+1-th row R, the first light transmission region TA1, the second light transmission region TA2, and the third light transmission region TA3 may be sequentially overlapped in the first direction DR1. n+1 In the embodiment, the fourth light transmitting region TA4, the fifth light transmitting region TA5 and the sixth light transmitting region TA6 may be provided to overlap one another in the first direction DR1.

[0081] The first light-transmitting region TA1 corresponds to the first light-emitting region LA1 and may overlap the first light-emitting region LA or face the first light-emitting region to form the light channel of the first sub-pixel PX1. Similarly, the second light-transmitting region TA2 corresponds to the second light-emitting region LA2 and may overlap the second light-emitting region LA2 or face the second light-emitting region to form the light channel of the second sub-pixel PX2. Also, the third light-transmitting region TA3 corresponds to the third light-emitting region LA3 and may overlap the third light-emitting region LA3 or face the third light-emitting region to form the light channel of the third sub-pixel PX3. Similarly, the fourth light-transmitting region TA4, the fifth light-transmitting region TA5, and the sixth light-transmitting region TA6 may overlap the fourth light-emitting region LA4, the fifth light-emitting region LA5, and the sixth light-emitting region LA6, respectively, or face the fourth light-emitting region LA4, the fifth light-emitting region LA5, and the sixth light-emitting region LA6, respectively.

[0082] The emitted light supplied from the light emitting substrate LS may be supplied to the outside of the display panel DP after passing through the first light transmitting region TA1, the second light transmitting region TA2, and the third light transmitting region TA3. The light emitted from the first light transmitting region TA1 to the outside of the display panel DP may be called the first emitted light. The light emitted from the second light transmitting region TA2 to the outside of the display panel DP may be called the second emitted light. The light emitted from the third light transmitting region TA3 to the outside of the display panel DP may be called the third emitted light. The first emitted light may be a first color light, the second emitted light may be a second color light different from the first color, and the third emitted light may be a third color light different from the first color and the second color. As described above, the first color light may be red light having a peak wavelength in the range of about 610 nm to about 650 nm. The second color light may be green light having a peak wavelength in the range of about 510 nm to about 550 nm. The third color light may be blue light having a peak wavelength within a range of about 440 nm to about 480 nm.

[0083] In one overlapping light-transmitting region unit, the nth row R n In the first direction DR1, the first light-transmitting region TA1 may have a first width WT1, the second light-transmitting region TA2 may have a second width WT2, and the third light-transmitting region TA3 may have a third width WT3. Here, the first width WT1 of the first light-transmitting region TA1, the second width WT2 of the second light-transmitting region TA2, and the third width WT3 of the third light-transmitting region TA3 may be the same or different from each other. The present disclosure is not limited thereto.

[0084] In an exemplary embodiment, the first width WT1 of the first light-transmitting region TA1 may be larger than the second width WT2 of the second light-transmitting region TA2 and the third width WT3 of the third light-transmitting region TA3. Or, for example, the second width WT2 of the second light-transmitting region TA2 may be larger than the third width WT3 of the third light-transmitting region TA3. Thus, the area of ​​the first light-transmitting region TA1 may be larger than the area of ​​the second light-transmitting region TA2 and the area of ​​the third light-transmitting region TA3, and the area of ​​the second light-transmitting region TA2 may be larger than the area of ​​the third light-transmitting region TA3. In an exemplary embodiment, the first width WT1 of the first light-transmitting region TA1, the second width WT2 of the second light-transmitting region TA2, and the third width WT3 of the third light-transmitting region TA3 may be substantially the same. Thus, the area of ​​the first light-transmitting region TA1, the area of ​​the second light-transmitting region TA2, and the area of ​​the third light-transmitting region TA3 may be substantially the same.

[0085] In the color conversion substrate CS, the light blocking areas BA may be positioned around the light transmitting areas TA1, TA2, TA3, TA4, TA5, and TA6 in the display area DA.

[0086] The inventors of the present disclosure have discovered that the luminance of blue light emitted from a blue organic light emitting diode (OLED) drops significantly with the change in angle due to the microcavity effect, while the luminance of red and green quantum dot films changes only slightly with the change in angle because they have the characteristics of full-angle emission and do not have the microcavity effect, as shown in Figure 5. Therefore, with the change in viewing angle, the luminance of blue light drops rapidly, while the luminance of red and green light changes little, resulting in serious polarization of white light at large viewing angles.

[0087] FIG. 6 is a schematic cross-sectional view of a display panel DP along line A1-A1' in FIG. 3 and FIG. 4 according to an embodiment of the present disclosure. In some embodiments of the present disclosure, a display panel DP is provided. The display panel DP includes a plurality of light-emitting elements LD. The light-emitting elements LD may be at least one of an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), and a mini / micro light-emitting diode (MLED). In the embodiments of the present disclosure, an example in which the light-emitting element LD is an OLED is described. However, it is considered that the embodiments of the present disclosure are not limited to a QD-OLED display panel. An OLED light-emitting element has advantages such as a small thickness, a fast response, a low driving voltage, a wide operating temperature range, self-luminous and low power consumption, and the possibility of manufacturing a flexible device.

[0088] As shown in FIG. 6, the display panel DP may include a light-emitting substrate LS, a color-changing substrate CS, and a filling layer FL filled between the light-emitting substrate LS and the color-changing substrate CS.

[0089] In some embodiments, the light emitting substrate LS may include a first substrate SUB1 and switching elements T1, T2, and T3 provided on the first substrate SUB1.

[0090] The light emitting substrate LS may include a first base substrate SUB1. The first base substrate SUB1 may be formed of a light-transmitting material. For example, the first base substrate SUB1 may be formed of inorganic glass, organic glass, a plastic substrate, or other organic material substrate. The first base substrate SUB1 may have rigidity or flexibility. The first base substrate SUB1 may further include a buffer layer or an insulating layer to provide a substrate surface with good performance.

[0091] The light emitting substrate LS may include a plurality of switching elements disposed on the first base substrate SUB1. In one overlapping light emitting area unit, the switching elements include a first switching element T1, a second switching element T2, and a third switching element T3. For example, the first switching element T1 may be located in the first light emitting area LA1, the second switching element T2 may be located in the second light emitting area LA2, and the third switching element T3 may be located in the third light emitting area LA3. Also, for example, at least one of the first switching element T1, the second switching element T2, and the third switching element T3 may be located in the non-light emitting area NLA. At least one of the first switching element T1, the second switching element T2, and the third switching element T3 may be a thin film transistor including polysilicon, or may be a thin film transistor including an oxide semiconductor. For example, when the switching element is a thin film transistor including an oxide semiconductor, the switching element may have a top gate thin film transistor structure. The switching element may be connected to a signal line. The signal line includes, but is not limited to, a gate line, a data line, and a power line.

[0092] The light emitting substrate LS may include an insulating layer INL, which may be located on the first switching element T1, the second switching element T2, and the third switching element T3. The insulating layer INL may have a planarized surface. The insulating layer INL may be formed of an organic layer. For example, the insulating layer INL may include an acrylic resin, an epoxy resin, an imide resin, or an ester resin. The insulating layer INL may have through holes exposing the electrodes of the first switching element T1, the second switching element T2, and the third switching element T3 to realize electrical connection.

[0093] The light emitting substrate LS may include a light emitting element layer LDL located on a first substrate SUB1. The light emitting element layer LDL is provided with a plurality of light emitting elements LD connected to switching elements. In one overlapping light emitting area unit, the light emitting element LD includes a first light emitting element LD1, a second light emitting element LD2, and a third light emitting element LD3. For example, the first light emitting element LD1 may be located in the first light emitting area LA1, the second switching element T2 may be located in the second light emitting area LA2, and the third switching element T3 may be located in the third light emitting area LA3.

[0094] The first light-emitting element LD1 includes a first anode AE1, the second light-emitting element LD2 includes a second anode AE2, and the third light-emitting element LD3 includes a third anode AE3. The first anode AE1, the second anode AE2, and the third anode AE3 may be provided on the insulating layer INL. The first anode AE1 may be located in the first light-emitting region LA1 and may be connected to the first switching element T1 through a through-hole in the insulating layer INL. The second anode AE2 may be located in the second light-emitting region LA2 and may be connected to the second switching element T2 through a through-hole in the insulating layer INL. The third anode AE3 may be located in the third light-emitting region LA3 and may be connected to the third switching element T3 through a through-hole in the insulating layer INL. At least one of the first anode AE1, the second anode AE2, and the third anode AE3 may at least partially extend to the non-light-emitting region NLA. The widths or areas of the first anode AE1, the second anode AE2, and the third anode AE3 may be the same or different from each other. In some embodiments, the width of the first anode AE1 may be larger than the width of the second anode AE2, and the width of the second anode AE2 may be smaller than the width of the third anode AE3. In some other embodiments, the first anode AE1, the second anode AE2, and the third anode AE3 may be reflective electrodes. The first anode AE1, the second anode AE2, and the third anode AE3 may each have a single-layer structure or a multi-layer structure and may be formed of a metal such as Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, or Cr, or a mixture of these metals, or a conductive metal oxide material such as ITO, IZO, or acid IGZO.

[0095] The light-emitting substrate LS may include a pixel confinement layer PDL located on the first anode AE1, the second anode AE2, and the third anode AE3. The pixel confinement layer PDL may include openings that expose the first anode AE1, the second anode AE2, and the third anode AE3, respectively, and define the first light-emitting area LA1, the second light-emitting area LA2, the third light-emitting area LA3, and the non-light-emitting area NLA, respectively. The material of the pixel confinement layer PDL may be at least one of organic insulating materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polybenzene resin, polyphenylene sulfide resin, and benzocyclobutene (BCB).

[0096] As shown in FIGS. 7 to 9 of the present disclosure, the first light-emitting element LD1, the second light-emitting element LD2, and the third light-emitting element LD3 each further include an emitting layer OL. The emitting layer OL may have the form of a continuous film formed in the emitting regions LA1, LA2, LA3, LA4, LA5, and LA6 and the non-emitting region NLA. The emitting layer OL may include a plurality of layers stacked together. In some embodiments, the emitting layer OL may include a first hole-transporting layer HTL1 located on the first anode AE1, a first light-emitting material layer EML1 located on the first hole-transporting layer HTL1, and a first electron-transporting layer ETL1 located on the first light-emitting material layer EML1. The first light-emitting material layer EML1 may be a blue light-emitting layer. In some other embodiments, in addition to the first hole transport layer HTL1, the first light emitting material layer EML1, and the first electron transport layer ETL1, the light emitting layer OL may further include a first charge generation layer CGL1 located on the first light emitting material layer EML1 and a second light emitting material layer EML2 located on the first charge generation layer CGL1. The first electron transport layer ETL1 may be located on the second light emitting material layer EML2. Similar to the first light emitting material layer EML1, the second light emitting material layer EML2 may emit blue light. The second light emitting material layer EML2 may emit blue light having the same or different peak wavelength as the first light emitting material layer EML1. The first light emitting material layer EML1 and the second light emitting material layer EML2 may emit light of different colors. For example, the first light emitting material layer EML1 may emit blue light, and the second light emitting material layer EML2 may emit green light. In another embodiment, the light-emitting layer OL may further include a second charge generation layer CGL2 located on the second light-emitting material layer EML2 and a first light-emitting material layer located on the second charge generation layer CGL2. The first electron transport layer ETL1 may be located on the second light-emitting material layer EML2. The third light-emitting material layer EML3 may emit blue light, similar to the first light-emitting material layer EML1 or the second light-emitting material layer EML2. The third light-emitting material layer EML3 may emit blue light having the same or different peak wavelength as the first light-emitting material layer EML1 and the second light-emitting material layer EML2. The first light-emitting material layer EML1, the second light-emitting material layer EML2, and the third light-emitting material layer EML3 may emit light of different colors. The structure of two or more light-emitting material layers can improve the light-emitting efficiency and life of the light-emitting element LD.Those skilled in the art can determine the number of light-emitting material layers as needed, and the present disclosure is not limited in this respect.

[0097] The first light-emitting element LD1, the second light-emitting element LD2, and the third light-emitting element LD3 include a common cathode CE. The cathode CE may be located on the light-emitting layer OL. The cathode CE may have semi-transmissive or transmissive properties. In some embodiments, the cathode CE may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF / Ca, LiF / Al, Mo, or Ti, or a compound or mixture thereof, such as a mixture of Ag and Mg. In other embodiments, the cathode CE may include a transparent conductive oxide (TCO). For example, the cathode CE may include tungsten oxide (W x O y ), titanium oxide (TiO2), indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO), magnesium oxide (MgO), etc. In some embodiments, the light-emitting substrate LS may further include an auxiliary cathode (not shown). The auxiliary cathode can reduce the resistance of the cathode CE, thereby improving the IR drop problem of the cathode and improving the uniformity of the large-scale OLED light-emitting substrate.

[0098] In some embodiments, as shown in FIG. 6, the light-emitting substrate may include a light extraction layer CPL on the side of the plurality of light-emitting elements LD away from the first substrate SUB1 to enhance light extraction efficiency. The material of the light extraction layer CPL is usually an organic material with a high refractive index and low absorption. The light extraction layer CPL may be formed by depositing a 50 nm to 80 nm organic small molecule material.

[0099] The light-emitting substrate LS further includes a film sealing layer TFE provided on the cathode CE. The film sealing layer TFE may have the form of a continuous film formed in the light-emitting regions LA1, LA2, LA3, LA4, LA5, LA6 and the non-light-emitting region NLA. The film sealing layer TFE may include a first sealing layer ENL1, a second sealing layer ENL2, and a third sealing layer ENL3, which are stacked. For example, the first sealing layer ENL1 and the third sealing layer ENL3 are made of an inorganic material. The inorganic material is at least one material selected from silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon nitride (SiON), and lithium fluoride. Also, for example, the second sealing layer ENL2 is made of an organic material. The organic material is at least one material selected from vinyl acid resin, methacrylic acid resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, or perylene resin. Those skilled in the art can modify the number of layers, materials, and structure of the membrane sealing layer TFE as needed, and the present disclosure is not limited thereto.

[0100] In some embodiments, as shown in FIG. 6, the color conversion substrate CS may include a second base substrate SUB2, a color filter layer CFL, a separation wall PW, and a color conversion layer CCPL.

[0101] The color conversion substrate CS may include a second substrate SUB2. The second base substrate SUB2 may be formed of a light-transmitting material. For example, the second base substrate SUB2 may be formed of inorganic glass, organic glass, a plastic substrate, or other organic material substrate. The second base substrate SUB2 may be rigid or flexible. The second base substrate SUB2 may further include a buffer layer or an insulating layer to provide a substrate surface with good performance.

[0102] The color conversion substrate CS may further include a color filter layer CFL located on one side of the second base substrate SUB2. The color filter layer CFL is located on the side of the light emitting element layer LDL away from the first base substrate SUB1. The color filter layer CFL includes a first light shielding pattern BM1. The first light shielding pattern BM1 may include a plurality of openings for defining a first light transmitting region TA1, a second light transmitting region TA2, a third light transmitting region TA3, and a light blocking region BA. The first light shielding pattern BM1 can prevent light interference caused by mixing of light from adjacent light transmitting regions, and can improve color reproducibility.

[0103] In one overlapping light transmission region unit, the color filter layer CFL includes color filters CF located at the openings of the first light-shielding pattern BM1. The color filters CF may include a first color filter CF1 located in the first light transmission region TA1, a second color filter CF2 located in the second light transmission region TA2, and a third color filter CF3 located in the third light transmission region TA3. The first color filter CF1 can selectively transmit a first color light (e.g., red light) and block or absorb a second color light and a third color light. The first color filter CF1 may be a red filter and may include a red colorant such as a red dye or a red pigment. The second color filter CF2 can selectively transmit a second color light (e.g., green light) and block or absorb a first color light (e.g., red light) and a third color light (e.g., blue light). The second color filter CF2 may be a green filter and may include a green colorant such as a green dye or a green pigment. The third color filter CF3 can selectively transmit light of a third color (e.g., blue light) and block or absorb light of the second color and the first color. The third color filter CF3 can be a blue filter and can include a blue colorant, such as a blue dye or a blue pigment. As used herein, the term "colorant" is understood to include both dyes and pigments. In some embodiments, the first color filter CF1, the second color filter CF2, and the third color filter CF3 can be spaced apart from one another. In some embodiments, adjacent rows R n and R n+1In the second direction DR2, the first color filters CF1 of the same color located in the first light transmitting region TA1 and the fourth light transmitting region TA4 may have a continuous film layer in the second direction DR2.

[0104] The color conversion substrate CS may include a separation wall PW located on the side of the color filter CF remote from the second base substrate SUB2. The separation wall PW is located in the light blocking area BA and may include a plurality of openings.

[0105] The color conversion substrate CS may include a color conversion layer CCL located on one side of the second substrate SUB2. The color conversion layer CCL is located between the light emitting element layer LDL and the color filter layer CFL. In one overlapping light transmission region unit, the color conversion layer CCL includes a color conversion pattern CCP and a light transmission pattern TP located in a plurality of openings defined by the separation wall PW. The color conversion pattern CCP includes a first color conversion pattern CCP1 and a second color conversion pattern CCP2.

[0106] The first color conversion pattern CCP1 may emit light by converting or shifting the peak wavelength of the incident light to another specific peak wavelength. The first color conversion pattern CCP1 may convert the emitted light L provided by the first light-emitting element LD1 into red light having a peak wavelength in the range of about 610 nm to about 650 nm. As shown in FIG. 10A, the first color conversion pattern CCP1 may include a first base resin MS1, a first color conversion material QD1 dispersed in the first base resin MSM, and a first scattering particle SP1 dispersed in the first base resin MS1. Here, the first color conversion material QD1 is used to convert the light emitted by the first light-emitting element LD1 into red light. The scattering particle SP2 has a scattering effect on light and can scatter the light emitted from the first light-emitting element LD1 to the first color conversion pattern CCP1, and the light emitted from the first light-emitting element LD1 can be completely converted by the first color conversion material QD1 of the first color conversion mode CCP1, thereby improving the conversion efficiency to red light.

[0107] The second color conversion pattern CCP2 may emit light by converting or shifting the peak wavelength of the incident light to another specific peak wavelength. The second color conversion pattern 340 may convert the emitted light L provided from the second light-emitting element LD2 into green light having a peak wavelength in the range of about 510 nm to about 550 nm. As shown in FIG. 10B, the second color conversion pattern CCP2 may include a second base polymer MS2, a second color conversion material QD2 dispersed in the second base polymer MS2, and scattering particles SP2 dispersed in the second base polymer MS2. Here, the second color conversion material QD2 is used to convert the light emitted by the second light-emitting element LD2 into green light. The second scattering particles SP2 have a scattering effect on light, and can scatter the light emitted from the second light-emitting element LD2 to the second color conversion pattern CCP2, and the light emitted from the second light-emitting element LD2 can be completely converted by the second color conversion material QD2 of the second color conversion pattern CCP2, thereby improving the conversion efficiency to green light.

[0108] The scattering particles SP1 and SP2 may be inorganic or organic materials. For example, the scattering particles SP1 and SP2 may include hollow silica, aerogel, or porous particles. More specifically, the porous particles may be inorganic or organic particles, or may include a plurality of amorphous holes. The porous particles may include at least one type of TiO2, ZrO2, Al2O3, In2O3, ZnO, SnO2, Sb2O3, and ITO.

[0109] The first color conversion material QD1 and the second color conversion material QD2 may each include a semiconductor nanocrystal material, i.e., a quantum dot. When an electron transitions from the conduction band to the valence band, the quantum dot can emit light of a specific color. The quantum dot may have any shape, as long as this shape is commonly used in the art. Specifically, the quantum dot may be a spherical nanoparticle, a conical nanoparticle, a multi-layered nanoparticle or a cubic nanoparticle, and may also be a nanotube, a nanowire, a nanofiber or a nanoparticle.

[0110] In some embodiments, the quantum dot may have a core-shell structure. The core-shell structure includes a core material and a shell material. The core-shell structure includes a nanocrystalline core and a shell surrounding the core. The shell of the quantum dot may be used as a protective layer to prevent chemical modification of the core and maintain the semiconductor properties, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell may have a single layer structure or a multi-layer structure. The interface between the core and the shell may have a concentration gradient in which the concentration of the shell elements decreases toward the center of the core. The core of the quantum dot may be any compound selected from II-VI compounds, III-V compounds, IV-VI compounds, group IV elements and group IV compounds, and combinations thereof. The shell of the quantum dot may include one of an oxide of a metallic material, an oxide of a non-metallic material, a semiconductor compound, and combinations thereof. A transition material may be added between the core material and the shell material to realize a gradual transition of the crystal lattice, which effectively reduces the internal pressure caused by the crystal defects of the quantum dot, thereby further improving the luminous efficiency and stability of the quantum dot.

[0111] In some embodiments, the II-VI compound is a binary compound selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and mixtures thereof, and a binary compound selected from the group consisting of AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, C ternary compounds selected from the group consisting of dHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, and mixtures thereof; and quaternary compounds selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixtures thereof.

[0112] In some embodiments, the III-V compound may be selected from the group consisting of binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; ternary compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNAs, InNP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof; and quaternary compounds selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof.

[0113] In some embodiments, the III-V compound may be selected from the group consisting of binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; ternary compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNAs, InNP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof; and quaternary compounds selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof.

[0114] In some embodiments, the transition material may be a ternary alloy material, which can control the optical properties of the quantum dots to produce quantum dots with the same volume and different emission frequencies, thereby improving the color gamut coverage of the display device.

[0115] In some embodiments, the core material of the quantum dots includes CdSe and / or InP, and the shell material includes ZnS. For example, when the core material includes InP, the surface defects of the InP quantum dots form surface trap states, and the surface of the InP quantum dots is coated with ZnS to form a core-shell structure with InP as the core material and ZnS as the shell material, thereby reducing the surface area defects of the quantum dots and improving the luminous efficiency and stability of the quantum dots. The above description is only an example in which the core material includes InP. The above principle also applies when the core material includes CdSe, or when the core material includes CdSe and InP.

[0116] In some embodiments, the quantum dots are free of cadmium (Cd). For example, the core material of the quantum dots is InP and the shell material is a stack of ZnSe / ZnS. Or, for example, the core material of the quantum dots is ZnTeSe and the shell material is ZnSe / ZnS.

[0117] The size of the quantum dots may be less than 45 nm, e.g., 40 nm, 30 nm, 20 nm or less. In some embodiments, the size of the quantum dots is in the range of 4 nm to 20 nm, e.g., the size of the quantum dots may be 4 nm, 5 nm, 7 nm, 10 nm, 13 nm, 17 nm, or 20 nm. The quantum dots can emit various colors of light, such as blue light, red light, and green light, by adjusting the color of the light emitted from the quantum dots depending on the size. Here, the size of the red quantum dots may be different from the size of the green quantum dots.

[0118] In some embodiments, the thickness of the color conversion layer CCL is within the range of 5 μm to 30 μm. The thickness of the first color conversion pattern CCP1 and / or the thickness of the second color conversion pattern CCP2 is within the range of 5 μm to 30 μm. That is, at least one of the thickness of the first color conversion pattern CCP1 and / or the thickness of the second color conversion pattern CCP2 is within the range of 5 μm to 30 μm, and for example, the thickness in the range of 5 μm to 30 μm may be 5 μm, 10 μm, 15 μm, 18 μm, 21 μm, 25 μm, 28 μm, or 30 μm. Here, the thickness of the first color conversion pattern CCP1 and the thickness of the second color conversion pattern CCP2 may be the same or different from each other.

[0119] As shown in FIG. 11, the light-transmitting pattern TP may include a third base resin MS3 and third scatterers SP3 dispersed in the third base resin MS3.

[0120] 6, the first color conversion pattern CCP1, the second color conversion pattern CCP2, and the light transmission pattern TP may be formed by an inkjet method using an ink composition. The separation wall PW in the color conversion substrate CS may be used as a guide element for the ink composition that stably positions the first color conversion pattern CCP1, the second color conversion pattern CCP2, and the light transmission pattern TP at a desired position.

[0121] The color conversion substrate CS may further include a first cover layer CAP1 covering the first color filter CF1, the second color filter CF2, and the third color filter CF3. The first cover layer CAP1 is in direct contact with the first color filter CF1, the second color filter CF2, and the third color filter CF3. The first cover layer CAP1 can avoid contamination or damage of the first color filter CF1, the second color filter CF2, and the third color filter CF3 caused by impurities such as moisture and air penetrating from the outside. Alternatively, the first cover layer CAP1 can prevent contamination or damage of the first color conversion pattern CCP1 and the second color conversion pattern CCP2 caused by impurities such as moisture and air penetrating from the outside. The first cover layer CAP1 can prevent the coloring agent contained in the first color filter CF1, the second color filter CF2, and the third color filter CF3 from diffusing into other assemblies such as the first color conversion pattern CCP1 and the second color conversion pattern CCP2. The first coating layer CAP1 may be formed of an inorganic material. For example, the first coating layer CAP1 may include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, or silicon nitride.

[0122] The color conversion substrate CS may further include a second cover layer CAP2 covering the first color conversion pattern CCP1, the second color conversion pattern CCP2, and the light transmission pattern TP. Therefore, the second cover layer CAP2 can prevent impurities such as moisture and air from penetrating from the outside and causing contamination or damage to the first color conversion pattern CCP1, the second color conversion pattern CCP2, and the light transmission pattern TP. The second cover layer CAP2 may be formed of an inorganic material. The second cover layer CAP2 may be formed of the same material as the first cover layer CAP1, or may include some of the materials used to form the first cover layer CAP1. For example, the second cover layer CAP2 may be formed of at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, or silicon oxynitride.

[0123] In some embodiments, the display panel DP may include a touch function layer TL located between the second base substrate SUB2 and the color conversion layer CCL. The touch function layer TL may be a self-capacitance type touch function layer or a mutual capacitance type touch function layer.

[0124] As shown in FIG. 12, the mutual capacitance touch function layer TL has a plurality of touch driving electrodes TL1 and a plurality of touch sensing electrodes TL2 arranged in an array. The touch function layer includes a touch driving line provided along a first direction DR1 and a touch sensing line provided along a second direction DR2. One touch driving line corresponds to one row of touch driving electrodes TL1, and one touch sensing line corresponds to one column of touch sensing electrodes TL2. A capacitance is formed between the touch driving electrode TL1 and the touch sensor electrode TL2. A touch scanning signal is input to the touch driving line, and a sensing signal on each touch sensing line is collected, and the position is changed by the capacitance to determine the position of the touch point.

[0125] As shown in FIG. 13, the self-capacitive touch function layer TL has a plurality of touch units TL3 arranged in an array. Each touch unit TL3 is connected to an integrated circuit IC via a signal line. A capacitance may exist between the touch unit TL3 and a reference voltage terminal of the system (e.g., a ground signal terminal GND). A touch scanning signal is input to each signal line, a sensing signal of each signal line is collected, and a position of a capacitance change is determined from the sensing signal of each signal line, thereby determining a position of a touch point.

[0126] In addition, the touch driving electrodes, the touch sensing electrodes and the touch units in the touch function layer TL all have a metal mesh structure. As shown in Fig. 6, the metal mesh structure WG is located in the light blocking area BA, and prevents the light emitted from the light transmitting areas TA1, TA2 and TA3 from being adversely affected.

[0127] The display panel DP may further include a light adjustment layer LCL located between the second base substrate SUB and the touch function layer TL. The light adjustment layer LCL is used to adjust light passing through the touch function layer TL. The light adjustment layer LCL includes first particles P1 and second particles P2. The first particles P1 may be dye molecules, and the second particles P2 may be particles having a hollow structure.

[0128] For example, the first particles P1 are blue dye molecules that can diffuse the blue light emitted from the third light-transmitting region TA3 and expand the display angle of the blue light on the display panel DP.

[0129] The first particles P1 are located in the third light-transmitting region TA3, and the color of the dye molecules is the same as the color of the third light-emitting element LD3, and may form the same color as the color of the third sub-pixel PX3.

[0130] The hollow particles may include a core part filled with air and a shell part surrounding the core part. The hollow particles have a spherical shape and an average diameter of about 10 nm to about 200 nm. For example, the average diameter may be 10 nm, 33 nm, 59 nm, 123 nm, 150.3 nm, 188.8 nm, or 200 nm. The material of the shell part may be inorganic. Examples of inorganic materials include at least one of SiO2, MgF2, TiO2, ZrO2, Al2O3, In2O3, ZnO, SnO2, Sb2O3, Fe3O4, and ITO. For example, the material of the shell part includes only SiO2. Also, for example, the material of the shell part includes TiO2 and ZrO2. Furthermore, for example, the material of the shell part includes In2O3, ZnO, SnO2, and Sb2O3. Alternatively, the material of the shell part may be organic. In this case, the shell part has a low dielectric constant, and the adverse effect on the functional layer TL caused by the surface being charged can be avoided. Specifically, the material of the shell part includes at least one of acrylic polymer, polyimide, urethane polymer, styryl polymer, siloxane polymer, and epoxy polymer. For example, the material of the shell part includes only polyimide. Also, for example, the material of the shell part includes urethane polymer and styrene polymer. Furthermore, for example, the material of the shell part includes acrylic polymer, silicone polymer, and epoxy polymer.

[0131] The mass percentage of the hollow particles can be in the range of 30% to 60%. For example, the mass percentage is 30%, 36%, 42%, 48.8%, 52% or 60%. The resin mixture doped with the hollow particles can have a small refractive index and a large transmittance. For example, the resin mixture has a transmittance of 95% or more at a wavelength of 400 nm to 700 nm and a refractive index of 1.1 to 1.5 at a wavelength of 632 nm. The hollow particles are doped into the transparent substrate and provided on the light-emitting side of the color conversion layer CCL, so that the total refractive index in at least one light-transmitting region of the organic transparent material is reduced to an optimal refractive index for light emission, and the luminous efficiency is improved.

[0132] Specifically, as shown in Fig. 29, the total refractive index I of the transparent material not doped with hollow particles located on the light-emitting side of the color conversion layer is about 1.5, while the total refractive index II of the transparent material located on the light-emitting side of the color conversion layer after doping the hollow particles into the transparent substrate is about 1.35. The light extraction efficiency can be improved by about 6.4% compared to the method before doping.

[0133] The light adjustment layer LCL further includes a second light-shielding pattern BM2 that is provided in the same layer as the color conversion pattern CCP and the light-transmitting pattern TP and is located in the light-blocking area BA. The second light-shielding pattern BM2 may have the same planar arrangement pattern as the first light-shielding pattern BM1. The second light-shielding pattern BM2 can prevent light interference caused by mixing of light from adjacent light-transmitting areas and improve color reproducibility.

[0134] In some embodiments, as shown in FIG. 6, the light adjustment layer LCL is located only in the third light transmission region TA3. In other words, the orthogonal projection of the light adjustment layer LCL on the first base substrate SUB1 overlaps only with the third light transmission region TA3. For example, the third light transmission region TA3 is configured to transmit blue light. A transparent resin filling pattern MRP is provided in the region located in the same layer as the light adjustment layer LCL of the first light transmission region TA1 and the second light transmission region TAD2. The transparent resin filling pattern MRP may be filled with a matrix MR such as a transparent resin material.

[0135] Fig. 14 is a schematic diagram of a color conversion substrate of a display panel in the embodiment shown in Fig. 6. As shown in Fig. 14, the light adjustment layer LCL has a single layer structure and contains a mixture of first particles P1 and second particles P2. Fig. 15 is an enlarged view of the light adjustment layer LCL of Fig. 14. Here, as shown in Fig. 15, the first particles P1 and the second particles P2 are uniformly mixed in the matrix MR. The material of the matrix MR may be at least one of an acrylic polymer, a polysiloxane polymer, a urethane polymer, and an imide polymer.

[0136] 16 is a diagram showing a change in the configuration of the display panel in the embodiment shown in FIG. 6. As shown in FIG. 16, the light adjustment layer LCL has a laminated structure and includes a first light adjustment layer LCL1 and a second light adjustment layer LCL2. The first light adjustment layer LCL1 includes a first particle P1, and the second light adjustment layer LCL2 includes a second particle P2. The first light adjustment layer LCL1 is located on the side of the second base substrate SUB2, and the second light adjustment layer LCL2 is located on the side of the first light adjustment layer LCL1 away from the second base substrate SUB2. Since the second particle P2 has a hollow structure, when the display panel DP is used for touch control, the first light adjustment layer LCL1 can function as a buffer to prevent the hollow structure from bursting due to pressing.

[0137] The thickness of the first light adjustment layer LCL1 and the thickness of the second light adjustment layer LCL2 may be the same as or different from each other. The thickness of the first light adjustment layer LCL1 and the thickness of the second light adjustment layer LCL2 may each be in the range of 2 μm to 5 μm. For example, the thickness may be 2 μm, 3 μm, 4.2 μm, 4.8 μm, or 5 μm.

[0138] The first light adjustment layer LCL1 includes first particles P1, for example, blue dye molecules, which scatter light, thereby widening the display angle of view. The second light adjustment layer LCL2 includes second particles P2, for example, hollow particles, which reduces the refractive index of the color conversion layer on the light exit side, thereby improving the light extraction efficiency. The first light adjustment layer LCL1 may be present only in the third light transmission region TA3. In other words, the orthogonal projection of the first light adjustment layer LCL1 on the first base substrate SUB1 overlaps only with the third light transmission region TA3.

[0139] FIG. 17 is a diagram showing another change in the configuration of the display panel DP in the embodiment shown in FIG. 6. As shown in FIG. 17, the light adjustment layer LCL has a laminated structure and includes a first light adjustment layer LCL1 and a second light adjustment layer LCL2. The first light adjustment layer LCL1 includes a first particle P1, and the second light adjustment layer LCL2 includes a second particle P2. The second light adjustment layer LCL2 is located on the side of the second base substrate SUB2, and the first light adjustment layer LCL1 is located on the side of the second light adjustment layer LCL1 away from the second base substrate SUB2. The first light adjustment layer LCL1 may be present only in the third light transmission region TA3. In other words, the orthogonal projection of the first light adjustment layer LCL1 on the first base substrate SUB1 overlaps only with the third light transmission region TA3.

[0140] FIG. 18 is a cross-sectional view of a display panel DP in some of the other embodiments of the present disclosure along the line A1-A1' in FIG. 3 and FIG. 4. As shown in FIG. 18, the light adjustment layer LCL has a laminated structure and includes a first light adjustment layer LCL1 and a second light adjustment layer LCL2. The first light adjustment layer LCL1 is located on the side of the second base substrate SUB2, and the second light adjustment layer LCL2 is located on the side of the first light adjustment layer LCL1 away from the second base substrate SUB2. The first light adjustment layer LCL1 includes first particles P1, and the second light adjustment layer LCL2 includes second particles P2. The first light adjustment layer LCL1 and the second light adjustment layer LCLL have an island pattern. The first light adjustment layer LCL1 is located only in the third light transmission region TA3, and the second light adjustment layer LCL2 is located so as to cover the first light transmission region TA1, the second light transmission region TA2, and the third light transmission region TA3. The thickness of the second light-blocking pattern BM2 located in the light-blocking region BA may be approximately equal to the sum of the thicknesses of the first light adjustment layer LCL1 and the second light adjustment layer LCL2 located in the third light-transmitting region TA3, and may also be equal to the thickness of the second light adjustment layer LCL2 located in the first light-transmitting region TA1 and the second light-transmitting region TA2, thereby providing a flat surface for subsequent processes.

[0141] The second light adjustment layer LCL2 includes a plurality of first patterns PL1, second patterns PL2, and third patterns PL3 that are separated from each other. Each of the first pattern PL1, second pattern PL2, and third pattern PL3 may include second particles P2. The first pattern PL1 is located in the first light transmission region TA1, the second pattern PL2 is located in the second light transmission region TA2, and the third pattern PL3 is located in the third light transmission region TA3. The thickness of the second light blocking pattern BM2 along the direction perpendicular to the display panel DP is approximately equal to the thickness of the first pattern PL1 and / or the second pattern PL2 along the direction perpendicular to the display panel DP, and is also approximately equal to the sum of the thickness of the third pattern PL3 along the direction perpendicular to the display panel DP and the thickness of the first light adjustment layer LCL1 along the direction perpendicular to the display panel DP. The first pattern PL1, the second pattern PL2, and the third pattern PL3 are doped with different mass percents of the second particles P2. By adjusting the doping concentration of the second particles P2, the total refractive index of the transparent material on the light emission side of the color conversion layer CCL can be adjusted, and the light extraction efficiency can be increased.

[0142] Fig. 19 is a diagram showing another change in the configuration of the display panel DP in the embodiment shown in Fig. 18. As shown in Fig. 19, the first light adjustment layer LCL1 is located only in the third light transmission region TA3, and the second light adjustment layer LCL2 has a continuous film layer structure and covers the first light transmission region TA1, the second light transmission region TA2, the third light transmission region TA3 and the light blocking region BA. The thickness of the second light blocking pattern BM2 may be approximately equal to the thickness of the second light adjustment layer LCL2 and smaller than the thickness of the second light adjustment layer LCL2 located in the first light transmission region TA1 and the second light transmission region TAD2.

[0143] FIG. 20 is a cross-sectional view of a display panel DP in yet another embodiment of the present disclosure along the line A1-A1' in FIG. 3 and FIG. 4. As shown in FIG. 20, the light adjustment layer LCL and the color filter layer CF are provided in the same layer. The light adjustment layer LCL has a laminated structure and includes a first light adjustment layer LCL1 and a second light adjustment layer LCL2. The first light adjustment layer LCL1 is located on the side of the second base substrate SUB2, and the second light adjustment layer LCL2 is located on the side of the first light adjustment layer LCL1 away from the second base substrate SUB2. The first light adjustment layer LCL1 includes first particles P1, and the second light adjustment layer LCL2 includes second particles P2. The light adjustment layer LCL is located in the third light transmission region TA3. Since the second particles P2 have a hollow structure, when the display panel DP is used for touch control, the first light adjustment layer LCL1 can function as a buffer to prevent the hollow structure from bursting due to pressing.

[0144] Fig. 21 is a diagram showing another configuration change of the display panel DP in the embodiment shown in Fig. 20. As shown in Fig. 21, the positions of the first light adjustment layer LCL1 and the second light adjustment layer LCL2 are interchangeable, and the present disclosure is not limited thereto.

[0145] Fig. 22 is a diagram showing further configuration changes of the display panel DP in the embodiment shown in Fig. 20. As shown in Fig. 22, the light adjustment layer LCL has a single layer structure and includes a mixture of first particles P1 and second particles P2. The first particles P1 and the second particles P2 are uniformly mixed in the substrate MR. The thickness of the light adjustment layer LCL is approximately equal to the thickness of the first color filter CF1 and the thickness of the second color filter CF, thereby providing a flat surface for subsequent processes.

[0146] In some embodiments, the light adjustment layer LCL is disposed directly on the second base substrate SUB2, in other words, the light adjustment layer LCL is in direct contact with the second base substrate SUB2.

[0147] FIG. 23 is a diagram showing yet another configuration change of the display panel DP in the embodiment shown in FIG. 6. Different light emitting elements LD in the display panel DP emit light of different colors. The emission spectrum of the first light emitting element LD1, the emission spectrum of the second light emitting element LD2, and the emission spectrum of the third light emitting element LD3 are different from each other. The first light emitting element LD1 emits a first light L1, the second light emitting element LD2 emits a second light L2, and the third light emitting element LD3 emits a third light L3. In some embodiments, the first light L1, the second light L2, and the third light L3 may be the same light, i.e., three types of light having approximately the same peak wavelength. For example, the first light L1, the second light L2, and the third light L3 are blue light of the same color. In some other embodiments, the first light L1, the second light L2, and the third light L3 may be different lights. That is, the peak wavelength range of the first light L1, the peak wavelength range of the second light L2, and the peak wavelength region of the light L3 are different from each other. For example, the first light L1 is red light, the second light L2 is green light, and the third light L3 is blue light.

[0148] In addition, the first light L1, the second light L2, and the third light L3 may be three types of light having different peak wavelengths within the same peak wavelength range. In some examples, the first light L1 is a blue light of one color, the second light L2 is a blue light of another color, and the third light L3 is a blue light of a color different from the colors of the two blue lights.

[0149] In the above light-emitting element LD, factors that result in differences between the emissions L include, but are not limited to, different materials for forming the light-emitting layer OL, different mass percentages of the light-emitting components in the light-emitting layer OL, or other factors that may affect the emission spectrum of the first light-emitting material layer EML1.

[0150] Exemplarily, the wavelength of the emission peak of the first light-emitting element LD1 is in the range of 450 nm to 459 nm. For example, the wavelength is 450 nm, 453 nm, 455.2 nm, 457.3 nm, 458.8 nm, or 459 nm. The wavelength of the emission peak of the second light-emitting element LD2 is in the range of 460 nm to 469 nm. For example, the wavelength is 460 nm, 463 nm, 465.2 nm, 467.3 nm, 468.8 nm, or 469 nm. The wavelength of the emission peak of the third light-emitting element LD3 is in the range of 470 nm to 479 nm. For example, the wavelength is 470 nm, 473 nm, 475.2 nm, 477.3 nm, 478.8 nm, or 479 nm.

[0151] Of course, there are various other cases. For example, the wavelength of the emission peak of the first light-emitting element LD1 may be greater than the wavelength of the emission peak of the second light-emitting element LD2. Alternatively, the wavelength of the emission peak of the first light-emitting element LD1 may be greater than the wavelength of the emission peak of the third light-emitting element LD3. The above description is merely an example for explanation, and is not limited to this.

[0152] 23, the first color conversion pattern CCP1 and the second color conversion pattern CCP2 have different light absorption characteristics due to different internal color conversion materials QD, which can reflect the difference in luminous efficiency when light of different peak wavelengths is converted into light of a different specific color or the peak of light is shifted to the position of the peak of light of a different specific color. In some examples, the luminous efficiency of the first color conversion pattern CCP1 when the first light L1 is converted into light of another specific peak wavelength, or the luminous efficiency of the first color conversion pattern CCP1 when the peak of the first light L1 is moved to the position of the peak of the other specific peak wavelength light, is higher than the luminous efficiency of the first color conversion pattern CCP1 when the second light L2 is converted into light of another specific peak wavelength, or the luminous efficiency of the first color conversion pattern CCP1 when the peak of the second light L2 is moved to the position of the peak of the other specific peak wavelength light, and is also higher than the luminous efficiency of the first color conversion pattern CCP1 when the third light L3 is converted into light of another specific peak wavelength, or the luminous efficiency of the first color conversion pattern CCP1 when the peak of the third light L3 is moved to the position of the peak of the other specific peak wavelength light. Similarly, the luminous efficiency of the second color conversion pattern CCP2 when the second light L2 is converted into light of another specific peak wavelength, or the luminous efficiency of the second color conversion pattern CCP2 when the peak of the second light L2 is moved to the position of the peak of light of the other specific peak wavelength, is higher than the luminous efficiency of the second color conversion pattern CCP2 when the first light L1 is converted into light of another specific peak wavelength, or the luminous efficiency of the second color conversion pattern CCP2 when the peak of the first light L1 is moved to the position of the peak of light of the other specific peak wavelength, and is also higher than the luminous efficiency of the second color conversion pattern CCP2 when the third light L3 is converted into light of another specific peak wavelength, or the luminous efficiency of the second color conversion pattern CCP2 when the peak of the third light L3 is moved to the position of the peak of light of the other specific peak wavelength.

[0153] Similarly, the color conversion pattern CCP and the light transmission pattern TP have different light transmission properties due to the presence or absence of the internal color conversion material QD. This may reflect that the efficiency with which light having different peak wavelengths passes through the light transmission pattern TP is different. In some examples, the efficiency of the third light L3 passing through the light transmission pattern TP is greater than the efficiency of the second light L2 passing through the light transmission pattern TP and the efficiency of the first light L1 passing through the light transmission pattern TP.

[0154] Therefore, matching is achieved between the absorption spectrum of the first color conversion pattern CCP1 and the emission spectrum of the first light-emitting element LD1, and matching is achieved between the absorption spectrum of the second color conversion pattern CCP2 and the emission spectrum of the second light-emitting element LD2, thereby increasing the light conversion ratio of the color conversion layer CCL and improving the color characteristics of the display panel.

[0155] As shown in FIG. 23, the first light-transmitting region TA1 corresponds to the first light-emitting region LA1 and is provided so as to overlap with the first light-emitting region LA1 or face the first light-emitting region LA1, the second light-transmitting region TA2 corresponds to the second light-emitting region LA2 and is provided so as to overlap with the second light-emitting region LA2 or face the second light-emitting region LA2, and the third light-transmitting region TA3 corresponds to the third light-emitting region LA3 and is provided so as to overlap with the third light-emitting region LA3 or face the third light-emitting region LA3. As a result, the first color conversion pattern CCP1 can emit light by converting the peak wavelength of the first light L1 to another specific peak wavelength or moving the peak of the wavelength of the first light L1 to a peak position of another specific wavelength, the second color conversion pattern CCP2 can emit light by converting the peak wavelength of the second light L2 to another specific peak wavelength or moving the peak of the wavelength of the second light L2 to a peak position of another specific wavelength, and the light transmission pattern TP can transmit the third light L3. This improves the conversion efficiency of light L passing through the first color conversion pattern CCP1 and the conversion efficiency of the second color conversion pattern CCP2, improves the light transmission efficiency of the light transmission pattern TP, and improves the light extraction efficiency of the display panel DP.

[0156] FIG. 24 is a diagram showing a configuration change of two adjacent overlap units in the display panel DP according to the embodiment shown in FIG. 6. The first overlap unit RU1 and the second overlap unit RU2 are arranged adjacent to each other. Each overlap unit RU includes a first light-transmitting region TA1, a second light-transmitting region TA2, and a third light-transmitting region TA3. As shown in FIG. 24, the third light-transmitting region TA3 of the first overlap unit RU1 and the third light-transmitting region TAD3 of the second overlap unit RU2 are arranged adjacent to each other. In some embodiments, the third color filter CF3 of the same color located in the third light-transmitting region TA3 of the first overlap unit RU1 and the third light-transmitting region TA3 of the second overlap unit RU2 in the first direction DR1 may have a continuous film layer without arranging the first light-shielding pattern BM1 between the two adjacent third light-transmitting regions TA3.

[0157] Similarly, the second light-transmitting region TA2 of the first overlapping unit RU1 and the second light-transmitting region TA2 of the second overlapping unit RU2 may be disposed adjacent to each other. In some embodiments, the first light-shielding pattern BM1 is not disposed between the two adjacent second light-transmitting regions TA2, and the second color filter CF2 of the same color located in the second light-transmitting region TA2 of the first overlapping unit RU1 and the second light-transmitting region TA2 of the second overlapping unit RU2 in the first direction DR1 may have a continuous film layer. Also, the first light-transmitting region TA1 of the first overlapping unit RU1 and the first light-transmitting region TA1 of the second overlapping unit RU2 may be disposed adjacent to each other. In some embodiments, the first light-shielding pattern BM1 is not disposed between the two adjacent first light-transmitting regions TA1, and the first color filter CF1 of the same color located in the first light-transmitting region TA1 of the first overlapping unit RU1 and the first light-transmitting region TA1 of the second overlapping unit RU2 in the first direction DR1 may have a continuous film layer. The two adjacent second light transmitting regions TA2 or the two adjacent first light transmitting regions TA1 have substantially the same structure as the two adjacent third light transmitting regions TA3 in FIG.

[0158] FIG. 25 is a diagram showing another configuration change of two adjacent overlap units in the display panel DP according to the embodiment shown in FIG. 6. The first overlap unit RU1 and the second overlap unit RU2 are arranged adjacent to each other. Each overlap unit RU includes a first light-transmitting region TA1, a second light-transmitting region TA2, and a third light-transmitting region TA3. As shown in FIG. 25, the third light-transmitting region TA3 of the first overlap unit RU1 and the third light-transmitting region TAD3 of the second overlap unit RU2 are arranged adjacent to each other. In some embodiments, the same-color light-transmitting patterns TP located in the third light-transmitting region TA3 of the first overlap unit RU1 and the third light-transmitting region TAD3 of the second overlap unit RU2 in the first direction DR1 may have a continuous film layer without disposing a separation wall PW between two adjacent third light-transmitting regions TA3.

[0159] FIG. 26 is a diagram showing a further configuration change of two adjacent overlap units in the display panel DP according to the embodiment shown in FIG. 6. The first overlap unit RU1 and the second overlap unit RU2 are arranged adjacent to each other. Each overlap unit RU includes a first light-transmitting region TA1, a second light-transmitting region TA2, and a third light-transmitting region TA3. As shown in FIG. 26, the first light-transmitting region TA1 of the first overlap unit RU1 and the first light-transmitting region TA1 of the second overlap unit RU2 are arranged adjacent to each other. In some embodiments, the first color conversion patterns CCP1 of the same color located in the first light-transmitting region TA1 of the first overlap unit RU1 and the first light-transmitting region TA1 of the second overlap unit RU2 in the first direction DR1 may have a continuous film layer without disposing a separation wall PW between the two adjacent first light-transmitting regions TA1.

[0160] Similarly, the second light-transmitting region TA2 of the first overlapping unit RU1 and the second light-transmitting region TA2 of the second overlapping unit RU2 may be disposed adjacent to each other. In some embodiments, the second color conversion pattern CCP2 of the same color located in the second light-transmitting region TA2 of the first overlapping unit RU1 and the second light-transmitting region TA2 of the second overlapping unit RU2 in the first direction DR1 may have a continuous film layer without disposing a separation wall PW between two adjacent second light-transmitting regions TA2.

[0161] FIG. 27 is a diagram showing further configuration changes of two adjacent overlap units in the display panel DP in the embodiment shown in FIG. 6. The first overlap unit RU1 and the second overlap unit RU2 are arranged adjacent to each other. Each overlap unit RU includes a first light-transmitting region TA1, a second light-transmitting region TA2, and a third light-transmitting region TA3. As shown in FIG. 27, the third light-transmitting region TA3 of the first overlap unit RU1 and the third light-transmitting region TAD3 of the second overlap unit RU2 are arranged adjacent to each other. In some embodiments, the third color filter CF3 of the same color located in the third light-transmitting region TA3 of the first overlap unit RU1 and the third light-transmitting region TA3 of the second overlap unit RU2 in the first direction DR1 may have a continuous film layer without arranging the first light-shielding pattern BM1 between the two adjacent third light-transmitting regions TA3. In addition, without disposing a separation wall PW between two adjacent third light-transmitting regions TA3, the same-color light-transmitting patterns TP located in the third light-transmitting region TA3 in the first overlapping unit RU1 and the third light-transmitting region TA3 in the second overlapping unit RU2 in the first direction DR1 may have a continuous film layer.

[0162] FIG. 28 is a diagram showing a further configuration change of two adjacent overlap units in the display panel DP according to the embodiment shown in FIG. 6. The first overlap unit RU1 and the second overlap unit RU2 are arranged adjacent to each other. Each overlap unit RU includes a first light-transmitting region TA1, a second light-transmitting region TA2, and a third light-transmitting region TA3. As shown in FIG. 28, the first light-transmitting region TA1 of the first overlap unit RU1 and the first light-transmitting region TA1 of the second overlap unit RU2 are arranged adjacent to each other. In some embodiments, the first color filter CF1 of the same color located in the first light-transmitting region TA1 of the first overlap unit RU1 and the first light-transmitting region TA1 of the second overlap unit RU2 in the first direction DR1 may have a continuous film layer without arranging the first light-shielding pattern BM1 between the two adjacent first light-transmitting regions TA1. In addition, without disposing a separation wall PW between two adjacent first light-transmitting regions TA1, the first color conversion pattern CCP1 of the same color located in the first light-transmitting region TA1 in the first overlapping unit RU1 and the first light-transmitting region TA1 in the second overlapping unit RU2 in the first direction DR1 may have a continuous film layer.

[0163] Similarly, the second light-transmitting region TA2 in the first overlapping unit RU1 and the second light-shielding region TA2 in the second overlapping unit RU2 may be adjacent to each other. In some embodiments, the second color filter CF2 of the same color located in the second light-transmitting region TA2 in the first overlapping unit RU1 and the second light-transmitting region TA2 in the second overlapping unit RU2 in the first direction DR1 may have a continuous film layer without disposing the first light-shielding pattern BM1 between the two adjacent second light-transmitting regions TA2. Also, the second color conversion pattern CCP2 of the same color located in the second light-transmitting region TA2 in the first overlapping unit RU1 and the second light-transmitting region TA2 in the second overlapping unit RU2 in the first direction DR1 may have a continuous film layer without disposing the separation wall PW between the two adjacent second light-transmitting regions TA2.

[0164] As shown in FIG. 30, the horizontal axis in FIG. 30 indicates the wavelength of blue light, and the vertical axis indicates the luminance conversion rate of the quantum dots. From FIG. 30, it can be seen that when the emission peak of the blue emission spectrum is different, the luminance conversion rates of the red quantum dot RQD film and the green quantum dot GQD film are different. As the emission peak (EL peak) value of the blue OLED element increases, the luminance conversion rates of the RQD and GQD increase. From this, it can be seen that the emission peak of the blue emission spectrum of the blue OLED element is significantly affected by the luminance conversion rate of the quantum dots. As can be seen from FIG. 25, when the wavelength of blue light is increased from 454 nm to 463 nm, the luminance conversion rate of the red quantum dot RQD film increased by 14.4%, and the luminance conversion rate of the green quantum dot GQD film increased by 15.8%. Different quantum dot films actually have different optimal blue light excitation wavelengths.

[0165] It should be noted that the embodiments of the display panel DP provided by the present disclosure may be combined with each other to obtain the beneficial effects that all the embodiments provide.

[0166] In addition, the film layers in the display panel DP can be formed sequentially in a direction away from the first base substrate SUB1, or the light-emitting substrate LS and the color conversion substrate CS can be manufactured separately and then assembled to each other in an opposing arrangement according to the positions shown in Figure 6 to form a unit, which is not limited here.

[0167] According to some embodiments of the present disclosure, a color film substrate is provided, the color film substrate includes a color conversion substrate CS as described above, and a base substrate in the color film substrate includes a second base substrate SUB2 as described above.

[0168] Since the color film substrate has the structure of the color conversion substrate CS as described above, it has the beneficial effects of the color conversion substrate CS as described above, which will not be repeated here.

[0169] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any modifications or replacements that can be conceived by those skilled in the art within the technical scope of the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be in accordance with the claims.

Claims

1. The display panel has a plurality of overlapping pixel cells, and at least one pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel that display different colors, A first base substrate; a light emitting element layer located on one side of the first base substrate, the light emitting element layer including a first light emitting element, a second light emitting element, and a third light emitting element, the first light emitting element being located in a first sub-pixel, the second light emitting element being located in a second sub-pixel, and the third light emitting element being located in a third sub-pixel; a color filter layer located on a side of the light emitting element layer away from the first base substrate, the color filter layer including at least a first light shielding pattern, a first color filter, and a second color filter, the first light shielding pattern defining a plurality of light transmitting regions, the light transmitting regions including a first light transmitting region corresponding to the first sub-pixel, a second light transmitting region corresponding to the second sub-pixel, and a third light transmitting region corresponding to the third sub-pixel; a color conversion layer located between the light emitting element layer and the color filter layer, the color conversion layer including a first color conversion pattern, a second color conversion pattern, and a light transmission pattern, the first color conversion pattern being located in the first sub-pixel, the second color conversion pattern being located in the second sub-pixel, and the light transmission pattern being located in the third sub-pixel; a touch function layer located on a side of the color conversion layer away from the first base substrate; a light adjustment layer located on a side of the touch function layer away from the first base substrate, the orthogonal projection on the first base substrate overlapping at least the third light-transmitting region, the light adjustment layer including first particles and second particles, the first particles including dye molecules, and the second particles having a hollow structure.

2. The orthogonal projection of the light adjusting layer on the first base substrate overlaps only with the third light transmitting region; The display panel according to claim 1 .

3. The display panel further includes a transparent resin filled pattern disposed in the same layer as the light adjustment layer, the transparent resin filled pattern overlapping the first light transmitting region and the second light transmitting region. The display panel according to claim 2 .

4. The light adjustment layer has a single layer structure, and the light adjustment layer contains a mixture of the first particles and the second particles. The display panel according to claim 2 .

5. The light adjustment layer includes a first light adjustment layer and a second light adjustment layer which are stacked together, the first light adjustment layer includes the first particles, and the second light adjustment layer includes the second particles. The display panel according to claim 1 .

6. The first light adjustment layer is located on a side of the touch function layer away from the first base substrate, and the second light adjustment layer is located between the first light adjustment layer and the touch function layer. The display panel according to claim 5 .

7. The first light adjustment layer is located on a side of the touch function layer away from the first base substrate, and the second light adjustment layer is located on a side of the first light adjustment layer away from the touch function layer. The display panel according to claim 5 .

8. The orthogonal projection of the first light adjustment layer onto the first base substrate overlaps only with the third light transmission area; The display panel according to claim 5 .

9. The orthogonal projection of the second light adjustment layer on the first base substrate overlaps with each of the first light transmitting area, the second light transmitting area, and the third light transmitting area; The display panel according to claim 5 .

10. The second light adjustment layer has a continuous film structure. The display panel according to claim 9.

11. the light adjustment layer further includes a second light blocking pattern, the second light blocking pattern being located in a light blocking region that does not overlap the first light transmitting region, the second light transmitting region, and the third light transmitting region; The display panel according to claim 5 .

12. a thickness of the second light-shielding pattern in a direction perpendicular to the display panel is equal to or smaller than a thickness of the first light adjustment layer in the direction perpendicular to the display panel; The display panel according to claim 11.

13. the second light adjustment layer includes a plurality of first patterns, a second pattern, and a third pattern that are separated from each other; the first pattern is located in the first light transmitting region, the second pattern is located in the second light transmitting region, the third pattern is located in the third light transmitting region, and a thickness of the second light-shielding pattern in a direction perpendicular to the display panel is approximately equal to a thickness of the first pattern and / or a thickness of the second pattern in a direction perpendicular to the display panel, and is approximately equal to a sum of thicknesses of the third pattern and the first light adjustment layer in a direction perpendicular to the display panel; The display panel according to claim 11.

14. The light adjustment layer and the color filter layer are provided in the same layer. The display panel according to claim 2, or any one of claims 5 to 7.

15. the color of the dye molecules is the same as the color of the third sub-pixel; The display panel according to claim 1 .

16. The hollow structure of the second particle is spherical and includes an air-filled core component and a shell component surrounding the core component. The display panel according to claim 1 .

17. The second particles have an average diameter of about 10 nm to about 200 nm. The display panel according to claim 16.

18. the material of the shell part is organic and includes at least one of an acrylic polymer, a polyimide, a urethane polymer, a styrene polymer, a siloxane polymer, and an epoxy polymer; The display panel according to claim 16.

19. The material of the shell part is inorganic, such as SiO ２ , MgF ２ , TiO ２ , ZrO ２ , Al ２ O ３ , In ２ O ３ , ZnO, SnO ２ , Sb ２ O ３ , Fe ３ O ４ and ITO, The display panel according to claim 16.

20. The first color conversion pattern and the second color conversion pattern include a quantum dot material and scattering particles. The display panel according to claim 1 .

21. The quantum dot material is a cadmium-free material. The display panel according to claim 20.

22. The core material of the quantum dot material is InP, and the shell material is a stack of ZnSe and ZnS (ZnSe / ZnS), or the core material of the quantum dot material is ZnTeSe, and the shell material is a stack of ZnSe and ZnS (ZnSe / ZnS). The display panel according to claim 20.

23. the thickness of the first color conversion pattern and the thickness of the second color conversion pattern are 5 μm to 30 μm; The display panel according to claim 20.

24. The touch function layer has a metal mesh structure. The display panel according to claim 1 .

25. a light extraction layer located on a side of the light emitting element layer away from the first base substrate; a packaging layer located on a side of the light extraction layer away from the first base substrate; Further comprising: The display panel according to claim 1 .

26. Further comprising a second base substrate located on a side of the light adjustment layer away from the first base substrate. The display panel according to claim 1 .

27. The second base substrate is in direct contact with the light adjustment layer.

27. The display panel of claim 26.

28. Further comprising a first cover layer and a second cover layer located on both sides of the color conversion layer. The display panel according to claim 1 .

29. A base substrate; a color filter layer located on the base substrate, the color filter layer including at least a first light-shielding pattern, a first color filter, and a second color filter, the first light-shielding pattern defining a plurality of light-transmitting regions, the light-transmitting regions including a first light-transmitting region for transmitting light of a first color, a second light-transmitting region for transmitting light of a second color, and a third light-transmitting region for transmitting light of a third color; a color conversion layer located on a side of the color filter layer away from the substrate, the color conversion layer including a first color conversion pattern, a second color conversion pattern, and a light transmission pattern; a touch function layer located between the color conversion layer and the base substrate; A light adjustment layer is located between the touch function layer and the base substrate, and an orthogonal projection on the base substrate overlaps with at least the third light transmission region, the light adjustment layer including first particles and second particles, the first particles including dye molecules, and the second particles having a hollow structure; A color film substrate comprising:

30. The orthogonal projection of the light adjusting layer on the base substrate overlaps only with the third light transmitting region; 30. The color film substrate of claim 29.

31. The color film substrate further includes a transparent resin filling pattern provided in the same layer as the light adjustment layer, and the transparent resin filling pattern overlaps the first light transmission region and the second light transmission region.

31. The color film substrate of claim 30.

32. the light adjustment layer has a single layer structure, and the light adjustment layer contains a mixture of the first particles and the second particles; 31. The color film substrate of claim 30.

33. The light adjustment layer includes a first light adjustment layer and a second light adjustment layer which are stacked together, the first light adjustment layer includes the first particles, and the second light adjustment layer includes the second particles.

30. The color film substrate of claim 29.

34. The second light adjustment layer is located between the first light adjustment layer and the touch function layer; 34. The color film substrate of claim 33.

35. The first light adjustment layer is located between the second light adjustment layer and the touch function layer; 34. The color film substrate of claim 33.

36. The orthogonal projection of the first light adjustment layer onto the base substrate overlaps only with the third light transmission area; 36. The color film substrate according to any one of claims 33 to 35.

37. The orthogonal projection of the second light adjustment layer onto the base substrate overlaps with each of the first light transmitting region, the second light transmitting region, and the third light transmitting region; 36. The color film substrate according to any one of claims 33 to 35.

38. The second light adjustment layer has a continuous film structure.

38. The color film substrate of claim 37.

39. the light adjustment layer further includes a second light blocking pattern, the second light blocking pattern being located in a light blocking region that does not overlap the first light transmitting region, the second light transmitting region, and the third light transmitting region; 39. The color film substrate according to any one of claims 33 to 38.

40. the thickness of the second light-shielding pattern in a direction perpendicular to the color film substrate is equal to or less than the thickness of the first light-adjusting layer in a direction perpendicular to the color film substrate; 40. The color film substrate of claim 39.

41. the second light adjustment layer includes a plurality of first patterns, a second pattern, and a third pattern that are separated from each other; the first pattern is located in the first light transmitting region, the second pattern is located in the second light transmitting region, the third pattern is located in the third light transmitting region, and The thickness of the second light-shielding pattern in a direction perpendicular to the color film substrate is approximately equal to the thickness of the first pattern and / or the second pattern in a direction perpendicular to the color film substrate, and is approximately equal to the sum of the thicknesses of the third pattern and the first light adjustment layer in a direction perpendicular to the color film substrate; 40. The color film substrate of claim 39.

42. The light adjustment layer and the color filter layer are provided in the same layer.

36. The color film substrate according to claim 30, or any one of claims 33 to 35.

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