Display panel and display device thereof

Abstract

The invention provides a display panel and a display device thereof, the display panel comprises a display substrate, a filter layer and a light absorption layer, the display substrate comprises a substrate and a light-emitting device located on one side of the substrate, the filter layer is located on one side, away from the substrate, of the light-emitting device, and the filter layer comprises a color film corresponding to the light-emitting device. The color film comprises a first-color color film capable of transmitting first-color light rays emitted by the light-emitting device, the material of the first-color color film comprises a preset pigment material, and the preset pigment material is subjected to light-operated isomerization under the irradiation of the light rays with the first preset wavelength, so that the transmittance of the first-color color film is reduced; the orthographic projection of the first color film on the substrate is located in the orthographic projection of the light absorption layer on the substrate, and the light absorption layer is configured to absorb light of a first preset wavelength and can allow the light of the first color to penetrate through. The embodiment of the invention can prevent the first color film from being influenced by the light of the first preset wavelength, and improve the stability.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) is a display lighting technology that has gradually developed in recent years. Especially in the display industry, OLED display is considered to have broad application prospects due to its advantages such as high response, high contrast, and flexibility. The display panel includes a display substrate and a color filter film. The color filter film includes a color film. The color film also has the problem of reduced transmittance of some color films due to the influence of external ambient light, which affects the quality of the display panel. Summary of the invention

[0003] Embodiments of the present disclosure provide a display panel and a display device thereof to solve or alleviate one or more technical problems in the prior art.

[0004] As a first aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a display panel, including:

[0005] A display substrate, comprising a base substrate and a light emitting device located on one side of the base substrate;

[0006] A filter layer is located on a side of the light emitting device away from the substrate, the filter layer includes a color filter corresponding to the light emitting device, the color filter includes a first color color filter, the first color color filter can transmit a first color light emitted by the light emitting device, the material of the first color color filter includes a preset pigment material, the preset pigment material undergoes light-controlled isomerization under the irradiation of light of a first preset wavelength, so that the transmittance of the first color color filter is reduced;

[0007] The light absorbing layer is located on the side of the filter layer away from the base substrate. The orthographic projection of the first color filter on the base substrate is located within the orthographic projection of the light absorbing layer on the base substrate. The light absorbing layer is configured to absorb light of a first preset wavelength. The light absorbing layer can allow the first color light emitted from the first color filter to pass through.

[0008] In some possible implementations, the display panel further includes a transparent layer, where the transparent layer is located on a side of the light absorbing layer that is away from the base substrate.

[0009] In some possible implementations, a shading layer is further included, which is located between adjacent color films, and the orthographic projections of adjacent color films on the base substrate do not overlap. The light absorbing layer includes a first part and a second part, and the orthographic projection of the first color film on the base substrate coincides with the orthographic projection of the first part on the base substrate. The second part is arranged along the outer boundary of the first part and is connected to the first part, and the orthographic projection of the second part on the base substrate is located within the orthographic projection of the shading layer on the base substrate.

[0010] In some possible implementations, the width of the second portion is greater than 1 μm, and the width of the second portion is the distance between an end of the second portion away from the first portion and an end of the second portion close to the first portion.

[0011] In some possible implementations, the size of the first portion in the first direction is h1, the size of the first color filter in the first direction is h2, h1≥0.1*h2, and the first direction is a direction perpendicular to the substrate.

[0012] In some possible implementations, the second part includes a first sub-part, the orthographic projection of the first sub-part on the substrate does not overlap with the orthographic projection of the color film on the substrate, the size of the first part in the first direction is h1, the size of the first color film in the first direction is h2, the size of the first sub-part in the first direction is h3, h3≥0.2*(h1+h2), and the first direction is a direction perpendicular to the substrate.

[0013] In some possible implementations, the display panel further includes a transparent layer, the transparent layer is located between the filter layer and the light absorbing layer, the surface of the transparent layer facing away from the base substrate is a flat surface, and the light absorbing layer is located on the flat surface.

[0014] In some possible implementations, a shading layer is further included, which is located between adjacent color films, and the orthographic projections of adjacent color films on the base substrate do not overlap. The light absorbing layer includes a first part and a second part, and the orthographic projection of the first color film on the base substrate coincides with the orthographic projection of the first part on the base substrate. The second part is arranged along the outer boundary of the first part and is connected to the first part, and the orthographic projection of the second part on the base substrate is located within the orthographic projection of the shading layer on the base substrate.

[0015] In some possible implementations, the width of the second portion is greater than 1 μm, and the width of the second portion is the distance between an end of the second portion away from the first portion and an end of the second portion close to the first portion.

[0016] In some possible implementations, the first preset wavelength is in the range of 450 nm-500 nm.

[0017] In some possible implementations, the first color filter includes a green color filter, the preset pigment material includes a phthalocyanine material, and the material of the light absorbing layer includes a yellow pigment.

[0018] In some possible implementations,

[0019] The color filter further includes a second color color filter, the second color color filter can transmit the second color light emitted by the light emitting device, and the orthographic projection of the light absorbing layer on the base substrate does not overlap with the orthographic projection of the second color color filter on the base substrate; and / or,

[0020] The color filter also includes a third color color filter, which can transmit the third color light emitted by the light emitting device, and the orthographic projection of the light absorbing layer on the base substrate at least partially overlaps with the orthographic projection of the third color color filter on the base substrate.

[0021] In some possible implementations, the first color light includes green light; and / or, the second color light includes blue light; and / or, the third color light includes red light.

[0022] In some possible implementations,

[0023] The display panel also includes an encapsulation layer and a touch structure layer, wherein the encapsulation layer is located on a side of the light emitting device away from the substrate;

[0024] The touch structure layer includes a first metal layer, an inorganic insulating layer and a second metal layer, the first metal layer is located on a side of the encapsulation layer away from the substrate, the inorganic insulating layer is located on a side of the first metal layer away from the substrate, and the second metal layer is located on a side of the inorganic insulating layer away from the substrate;

[0025] The display panel further includes a light shielding layer, the light shielding layer is located on a side of the second metal layer away from the base substrate, the filter layer is located on a side of the light shielding layer away from the base substrate, the light shielding layer is located between adjacent color filters, and the orthographic projections of the first metal layer and the second metal layer on the base substrate are both located within the orthographic projection of the light shielding layer on the base substrate;

[0026] The display panel further includes a first transparent flat layer and a second transparent flat layer. The first transparent flat layer is located between the light absorbing layer and the filter layer, and the second transparent flat layer is located on a side of the light absorbing layer away from the base substrate.

[0027] In some possible implementations,

[0028] The display panel also includes an encapsulation layer and a touch structure layer, wherein the encapsulation layer is located on a side of the light emitting device away from the substrate;

[0029] The touch structure layer includes a first metal layer, an organic insulating layer and a second metal layer, the first metal layer is located on a side of the encapsulation layer away from the base substrate, the filter layer is located on a side of the encapsulation layer away from the base substrate, the first metal layer is located between adjacent color filters, the organic insulating layer is located on a side of the first metal layer and the filter layer away from the base substrate, and the second metal layer is located on a side of the organic insulating layer away from the base substrate;

[0030] The display panel also includes a shading layer, which is located on the side of the second metal layer away from the base substrate, the shading layer is located between adjacent color films, the orthographic projections of the first metal layer and the second metal layer on the base substrate are located within the orthographic projections of the shading layer on the base substrate, and the light absorption layer is located on the side of the shading layer away from the base substrate.

[0031] As a second aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a display device, comprising a display panel according to any one of the embodiments of the first aspect.

[0032] The technical solution of the embodiment of the present disclosure can achieve the following beneficial effects: the display panel of the embodiment of the present disclosure can eliminate the light-induced structural change characteristics of the preset pigment material, avoid the first color film being affected by the first preset wavelength of light and causing the transmittance to be reduced, improve the stability of the first color film, and improve the display effect of the display panel.

[0033] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0035] Figure 1 A cross-sectional schematic diagram of a display panel in the related art;

[0036] Figure 2 This is a schematic diagram of the molecular absorption spectrum of phthalocyanine materials;

[0037] Figure 3 Schematic diagram of excited electron intersystem crossing of phthalocyanine materials;

[0038] Figure 4 This is a schematic diagram comparing the transmittance of phthalocyanine materials before and after illumination;

[0039] Figure 5This is a schematic diagram comparing the light irradiation area and the non-light irradiation area of ​​the green color film;

[0040] Figure 6 is a schematic cross-sectional view of a display panel in an embodiment of the present disclosure;

[0041] Figure 7 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure;

[0042] Figure 8 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure;

[0043] Fig. 9 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure;

[0044] Fig.10 is the spectral peak type of the light absorption layer;

[0045] Fig.11a This is a schematic diagram for simulation verification and comparison of light-shielded areas and unshielded areas;

[0046] Fig.11b A schematic diagram showing the comparison of simulation verification with a yellow pigment light absorbing layer and without a light absorbing layer;

[0047] Fig.11c A schematic diagram showing the comparison of simulation verification with a blue pigment light absorbing layer and without a light absorbing layer;

[0048] Fig.12 is a schematic diagram of light transmittance of the light absorbing layer;

[0049] Fig.13 is a cross-sectional schematic diagram of a display panel of the related art;

[0050] Fig.14 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure;

[0051] Fig.15 Schematic cross-sectional view of a display panel according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0052] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0053] At present, LCD displays (Liquid Crystal Display) and WOLED displays (White Organic Light Emitting Diode) use color filters (CF) to convert white light sources into red, green and blue (RGB) pixel colors to achieve color presentation of the display. In the field of RGB self-luminous, such as RGB self-luminous OLED displays and QLED displays (Quantum Dot Light Emitting Diodes, QLED), color filters can replace polarizers, reduce reflected light, and enhance display. However, due to the principle of polarizers, the transmittance is basically impossible to exceed 50%. Therefore, the color filter on encapsulation layer (Color filter On Encapsulation, COE) technology came into being. The COE structure can effectively improve the transmittance of the display panel and reduce the power consumption of the light-emitting device.

[0054] Figure 1 FIG. 1 is a cross-sectional schematic diagram of a display panel of the related art. Figure 1 As shown, the display panel may include a display substrate 10 and a filter layer 20. The display substrate 10 includes a base substrate 11 and a light emitting device 12 located on one side of the base substrate 11. The filter layer 20 is located on the side of the light emitting device 12 away from the base substrate 11, and the filter layer 20 includes a color filter 21 corresponding to the light emitting device 12. The color filter 21 includes a first color color filter 211, and the first color color filter 211 can transmit the first color light emitted by the light emitting device 12. The material of the first color color filter includes a preset pigment material, and the preset pigment material undergoes light-controlled isomerization under the irradiation of the first preset wavelength, so that the transmittance of the first color color filter 211 is reduced.

[0055] like Figure 1 As shown, the display substrate 10 further includes a pixel definition layer 14, a thin film transistor layer 13 and an encapsulation layer 15. For example, the thin film transistor layer 13 is located on one side of the base substrate 11, and the thin film transistor layer 13 includes a thin film transistor. The pixel definition layer 14 is located on the side of the thin film transistor layer 13 away from the base substrate 10, and the pixel definition layer 14 is formed with an opening area, and the light emitting device 12 is located in the opening area. The encapsulation layer 15 is located on the side of the light emitting device 12 and the pixel definition layer 14 away from the base substrate 11. The display panel further includes a touch structure layer 40 (Touch), the touch structure layer 40 is located on the side of the encapsulation layer 15 away from the base substrate 10, and the filter layer 20 is located on the side of the touch structure layer 40 away from the base substrate 10. The color filter 21 of the filter layer 20 corresponds to the opening area one by one, and the color filter 21 is located above the positive projection of the light emitting device 12.

[0056] like Figure 1 As shown, the display panel further includes a transparent layer 50 , which is located on a side of the filter layer 20 that is away from the base substrate 11 .

[0057] In one embodiment, the color film 21 includes a red color film, a blue color film and a green color film, and the color films 21 are all colored by pigments or dyes. In daily use environments, the display panel will be affected by ultraviolet light in the external ambient light. Moreover, if the display panel is continuously exposed to the external ambient light, the pigment molecules in the color film 21 may undergo photoisomerization, photodegradation, and light-induced aggregation under the irradiation of light. As a result, the color of the display panel may change, reducing the display effect of the display panel.

[0058] Exemplarily, the first color light is green light, and the first color filter 211 is a green color filter. For example, in order to improve the colorability and color gamut of the green color filter, phthalocyanine materials are used in the green color filter, but phthalocyanine materials have the characteristics of light control isomerism, and the transmittance is easily reduced under the condition of the closed packaging of the display panel, affecting the quality of the display panel. For example, the green color filter can be a material with a color index of PG36 or PG7.

[0059] Figure 2 This is a schematic diagram of the molecular absorption spectrum of phthalocyanine materials. Figure 2 As shown, phthalocyanine materials can have two absorption peaks, namely, the B band and the Q band. Phthalocyanine materials contain a Schiff base structure, which has obvious light-controlled isomerism in optics, thus causing changes in the absorption spectrum under light.

[0060] Figure 3 The diagram is a schematic diagram of the intersystem crossing of excited electrons in phthalocyanine materials. The molecules of phthalocyanine materials can undergo different excitation processes under the action of light waves of different wavelengths. Figure 3 As shown, Figure 3 The left side in the middle represents the singlet state, Figure 3 The right side in the middle represents the triplet state. Phthalocyanine materials have efficient intersystem crossing ability between singlet and triplet states, so the molecules of the activated phthalocyanine materials will react photochemically with other molecules. As a result, the instability of the phthalocyanine materials themselves is increased, resulting in a decrease in the transmittance of the green color film containing phthalocyanine materials.

[0061] Figure 4 This is a schematic diagram comparing the transmittance of phthalocyanine materials before and after illumination. Figure 4 The middle dashed line represents the transmittance curve after illumination (after RA). Figure 4 The solid line in the middle represents the transmittance curve before illumination (before RA). By comparison, it can be seen that the transmittance of the green color film containing phthalocyanine materials decreases after illumination.

[0062] Figure 5This is a schematic diagram comparing the light-irradiated area and the non-light-irradiated area of ​​the green color film. Figure 5 The left area in the middle represents the non-irradiated area, and the right area represents the light-irradiated area. The transmittance of the phthalocyanine material in the light-irradiated area is reduced due to light, and the transmittance of the non-irradiated area and the light-irradiated area is different, so the non-irradiated area and the light-irradiated area show different colors. Figure 5 As shown, the light irradiated area appears macroscopically red, which reduces the display quality of the display panel.

[0063] Phthalocyanine materials have greater advantages in terms of stability, color gamut and color adjustability compared to other types of pigments. Therefore, in order to meet the requirements of green color film in terms of spectrum and color gamut, how to eliminate the light-induced structural change characteristics of phthalocyanine materials, improve the stability of green color film, and improve the quality of display panels have become urgent issues to be solved.

[0064] In order to solve the problem of display panels in the related art, the present disclosure provides a display panel. The technical solution of the display panel is described below in conjunction with the accompanying drawings.

[0065] Figure 6 FIG. 2 is a cross-sectional schematic diagram of a display panel in an embodiment of the present disclosure. Figure 6 As shown, the display panel of the embodiment of the present disclosure may include a display substrate 10 , a filter layer 20 and a light absorbing layer 30 .

[0066] Reference Figure 6 The display substrate 10 includes a base substrate 11 and a light emitting device 12 located on one side of the base substrate 11. The filter layer 20 is located on the side of the light emitting device 12 away from the base substrate 11, and the filter layer 20 includes a color filter 21 corresponding to the light emitting device 12. The color filter 21 includes a first color color filter 211, and the first color color filter 211 can transmit the first color light emitted by the light emitting device 12. The material of the first color color filter 211 includes a preset pigment material, and the preset pigment material undergoes light-controlled isomerization under the irradiation of the first preset wavelength of light, so that the transmittance of the first color color filter 211 is reduced.

[0067] Reference Figure 6 The light absorbing layer 30 is located on the side of the filter layer 20 away from the base substrate 11, and the orthographic projection of the first color filter 211 on the base substrate 11 is located within the orthographic projection of the light absorbing layer 30 on the base substrate 11. The light absorbing layer 30 is configured to absorb light of a first preset wavelength, and the light absorbing layer 30 can allow the first color light emitted from the first color filter 211 to pass through.

[0068] The light absorbing layer 30 is located on the side of the filter layer 20 away from the base substrate 11, and the orthographic projection of the first color filter 211 on the base substrate 11 is located within the orthographic projection of the light absorbing layer 30 on the base substrate 11, that is, the light from the external ambient light incident on the first color filter 211 first passes through the light absorbing layer 30, and the light absorbing layer 30 can absorb the light of the first preset wavelength incident from the external ambient light to prevent it from entering the first color filter 211. Moreover, the light absorbing layer 30 can also transmit the first color light emitted from the first color filter 211, so as to prevent the light absorbing layer 30 from affecting the display effect of the display panel.

[0069] Figure 1 The material of the first color film 211 of the display panel shown includes a preset pigment material. The preset pigment material undergoes photoisomerization under the irradiation of light of a first preset wavelength, so that the transmittance of the first color film 211 is reduced, thereby reducing the quality of the display panel. Figure 6 The light absorbing layer 30 in the display panel shown is arranged on the side of the first color film 211 away from the base substrate 11. The light absorbing layer 30 can absorb light of a first preset wavelength in the external environment light, thereby preventing the preset pigment material 211 of the first color film from undergoing photo-controlled isomerization, thereby improving the light resistance stability of the first color film 211.

[0070] In the display panel of the embodiment of the present disclosure, a light absorbing layer 30 is arranged on the side of the filter layer 20 away from the base substrate 11, and the orthographic projection of the first color filter 211 on the base substrate 11 is located within the orthographic projection of the light absorbing layer 30 on the base substrate 11. The light absorbing layer 30 can absorb the light of the first preset wavelength in the external ambient light, and the light absorbing layer 30 can allow the first color light emitted from the first color filter 211 to pass through. Thus, the light absorbing layer 30 forms a protective layer on one side of the first color filter 211, and the light absorbing layer 30 absorbs the light of the first preset wavelength, and the energy level transition in the first color filter 211 will not be triggered, thereby preventing the preset pigment material from intersystem crossing. In this way, the first color filter 211 can be protected from light-controlled isomerization of the preset pigment material when irradiated by the light of the first preset wavelength, thereby avoiding the reduction of the transmittance of the first color filter 211, improving the light resistance stability of the first color filter 211, and improving the quality of the display panel.

[0071] In one embodiment, the display substrate 10 further includes a thin film transistor layer 13, a pixel definition layer 14 and an encapsulation layer 15. Exemplarily, the thin film transistor layer 13 is located on one side of the base substrate 11, and the thin film transistor layer 13 includes a thin film transistor. The thin film transistor includes a gate, a gate insulating layer, an active layer, a first electrode, a second electrode and an interlayer insulating layer. The first electrode can be a source electrode, and the second electrode can be a drain electrode. The thin film transistor layer 13 also includes structures such as a gate line and a data line. It should be noted that the specific structure of the thin film transistor is not limited to the above structure. The thin film transistor can also be other types of structures, as long as it can drive the light-emitting device 12 to emit light, and the embodiments of the present disclosure are not limited to this.

[0072] In one embodiment, the display substrate further includes a first electrode layer disposed on the base substrate 11 and a pixel definition layer 14 located on a side of the first electrode layer away from the base substrate 11. The pixel definition layer 14 has a plurality of opening regions, the opening regions at least partially expose the first electrode layer, and the light emitting device 12 is located in the opening regions. The light emitting device 12 may include an organic light emitting diode. The display substrate further includes a second electrode layer, which covers the pixel definition layer 14 and the light emitting device 12 on a side away from the base substrate 11.

[0073] Exemplarily, the light emitting device 12 may include a light emitting layer, and the light emitting device 12 may also include film layers such as a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer. The first electrode layer, the light emitting device 12, and the second electrode layer drive the light emitting device 12 to emit light through a thin film transistor to realize the picture display of the display panel.

[0074] An encapsulation layer 15 is also provided on the side of the light-emitting device 12 facing away from the base substrate 11. The encapsulation layer 15 can be used to encapsulate the light-emitting device 12 and the base substrate 11 to prevent water and oxygen from entering the light-emitting device 12 and the base substrate 11 and causing the display panel to fail. Exemplarily, the encapsulation layer 15 can be a thin film encapsulation structure. For example, the encapsulation layer 15 can include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer. It should be noted that the encapsulation layer 15 can also include only an organic encapsulation layer or an inorganic encapsulation layer. The specific number of layers of the organic encapsulation layer and the inorganic encapsulation layer can be one layer or multiple layers, which is not limited in the embodiments of the present disclosure.

[0075] The preset pigment material is a material that undergoes photoisomerization when irradiated with light of a first preset wavelength, so that the transmittance of the first color filter 211 is reduced. Different pigment materials in different color filters may undergo photoisomerization when irradiated with different light. The preset pigment material and the material of the light absorption layer need to be set accordingly. For example, the preset pigment material may include a phthalocyanine material, which undergoes photoisomerization when irradiated with ultraviolet light. At this time, the light absorption layer 30 is a material that can absorb ultraviolet light. It should be noted that the preset pigment material and the material of the light absorption layer are not limited here and can be set according to actual use requirements.

[0076] Figure 7 FIG. 1 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure. Figure 7 In one embodiment, the display panel further includes a transparent layer 50, which is located on the side of the light absorbing layer 30 away from the base substrate 11. For example, the transparent layer 50 may be a glass cover plate, which is covered on the side of the light absorbing layer 30 away from the base substrate 11. The transparent layer 50 may protect the display panel.

[0077] Reference Figure 7 , the transparent layer 50 is arranged on the side of the light absorbing layer 30 away from the base substrate 11, and the light absorbing layer 30 is in direct contact with the first color filter 211. The light absorbing layer 30 needs to completely block the first color filter 211, and the light absorbing layer 30 covers the surrounding side of the first color filter 211, for example, the light absorbing layer 30 and the surface of the first color filter 211 away from the base substrate 11 and the side wall surface of the first color filter 211 are completely wrapped, and the transparent layer 50 is located on the side of the light absorbing layer 30 away from the base substrate 11, and the transparent layer 50 can cover the filter layer 20 and the side of the light absorbing layer 30 away from the base substrate 11. Therefore, the external ambient light entering the first color filter 211 needs to enter the light absorbing layer 30 first, which can improve the protection effect of the light absorbing layer 30 on the first color filter 211.

[0078] Reference Figure 7 The display panel further includes a light shielding layer 60, which is located between adjacent color filters 21. The orthographic projections of adjacent color filters 21 on the base substrate 11 do not overlap. The light absorbing layer 30 includes a first portion 31 and a second portion 32, and the orthographic projection of the first color filter 211 on the base substrate 11 coincides with the orthographic projection of the first portion 31 on the base substrate 11. The second portion 32 is arranged along the outer boundary of the first portion 31 and is connected to the first portion 31, and the orthographic projection of the second portion 32 on the base substrate 11 is located within the orthographic projection of the light shielding layer 60 on the base substrate 11.

[0079] Exemplarily, the light shielding layer 60 is located between adjacent color filters 21, and the light shielding layer 60 is separated and spaced to form an opening, and the orthographic projection of the opening formed by the pixel definition layer on the base substrate is located within the orthographic projection of the opening formed by the light shielding layer 60 on the base substrate. The color filter 21 is located in the opening formed by the light shielding layer 60, and both ends of the color filter 21 are in contact with the surface of the light shielding layer 60 facing away from the base substrate 11. The orthographic projections of adjacent color filters 21 on the base substrate 11 do not overlap, that is, adjacent color filters 21 are separated and arranged.

[0080] Exemplarily, the orthographic projection of the first color filter 211 on the base substrate 11 coincides with the orthographic projection of the first portion 31 on the base substrate 11, that is, the area of ​​the first portion 311 is equal to the area of ​​the first color filter 211, and the first portion 311 and the first color filter 211 are arranged opposite each other. The second portion 32 is arranged along the outer boundary of the first portion 31 and connected to the first portion 31, and the orthographic projection of the second portion 32 on the base substrate 11 is located within the orthographic projection of the light shielding layer 60 on the base substrate 11, so that the second portion 32 extends out of the boundary of the first color filter 211, which can further improve the protection of the first color filter 211.

[0081] Exemplarily, the light shielding layer 60 may be made of a light shielding material. For example, the light shielding layer 60 may be made of a black matrix material. The orthographic projection of the light shielding layer 60 on the base substrate 11 is located within the orthographic projection of the pixel definition layer 14 on the base substrate 11. The light shielding layer 60 may be provided in the same layer as the color filter 21, for example, the light shielding layer 60 and the color filter 21 are both located on the surface of the side of the encapsulation layer away from the base substrate 11. The light shielding layer 60 and the color filter may be formed simultaneously using the same process, or may be formed successively using different processes.

[0082] Reference Figure 7 , the width of the second portion 32 is greater than 1 μm, and the width of the second portion 32 is the distance between the end of the second portion 32 away from the first portion 31 and the end of the second portion 32 close to the first portion 31. The width of the second portion 32 is b1, b1>1 μm, so that the outer boundary of the light absorbing layer 30 extends at least 1 μm relative to the outer boundary of the first color film 211, which can ensure that the light absorbing layer 30 completely blocks the first color film 211, thereby improving the protection effect of the first color film.

[0083] Reference Figure 7, the size of the first part 31 in the first direction is h1, the size of the first color filter 211 in the first direction is h2, h1≥0.1*h2, and the first direction is a direction perpendicular to the base substrate 11. The size of the first part 31 in the first direction is the thickness of the first part 31, and the size of the first color filter 211 in the first direction is the thickness of the first color filter 211. The embodiment of the present disclosure sets the thickness relationship between the first part 31 and the first color filter 211, which is conducive to ensuring the protection effect of the first part 31 located on the first color filter 211 and improving the display effect.

[0084] Figure 8 FIG. 1 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure. Figure 8 As shown, the second part 32 includes a first sub-part 321, and the orthographic projection of the first sub-part 321 on the base substrate 11 does not overlap with the orthographic projection of the color film 21 on the base substrate 11. The size of the first part 31 in the first direction is h1, the size of the first color film 211 in the first direction is h2, the size of the first sub-part 321 in the first direction is h3, h3≥0.2*(h1+h2), and the first direction is a direction perpendicular to the base substrate 11. The size of the first part 31 in the first direction is the thickness of the first part 31, the size of the first color film 211 in the first direction is the thickness of the first color film 211, and the size of the first sub-part 321 in the first direction is the thickness of the first sub-part 321. The embodiment of the present disclosure sets the thickness relationship between the first part 31, the first color film 211 and the first sub-part 321, which is conducive to further ensuring the protection effect of the first color film 211 and improving the display effect.

[0085] Fig. 9 FIG. 1 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure. Fig. 9 In one embodiment, the display panel further includes a transparent layer 50, and the transparent layer 50 is located between the filter layer 20 and the light absorbing layer 30. Exemplarily, the transparent layer 50 is sandwiched between the filter layer 20 and the light absorbing layer 30, and the light absorbing layer 30 and the first color film 211 are not in contact.

[0086] In the display panel of the embodiment of the present disclosure, the transparent layer 540 is disposed between the light absorbing layer 30 and the first color filter 211, so that the light absorbing layer 30 can protect the first color filter 211 without interfering with the light intensity in the lateral direction. Moreover, the light absorbing layer 30 and the first color filter 211 are disposed separately, so that the thickness adjustment of the first color filter 211 will not interfere with the thickness of the light absorbing layer 30, which is conducive to the thickness adjustment of the first color filter 211.

[0087] Reference Fig. 9In one embodiment, the surface of the transparent layer 50 facing away from the base substrate 11 is a flat surface, and the light absorbing layer 30 is located on the flat surface. Therefore, the light absorbing layer 30 is formed on the flat surface of the transparent layer 50, and the flatness of the light absorbing layer 30 is high, which is conducive to controlling the thickness and uniformity of the light absorbing layer 30 and reducing the process difficulty.

[0088] Reference Fig. 9 The display panel further includes a light shielding layer 60, which is located between adjacent color filters 21. The orthographic projections of adjacent color filters 21 on the base substrate 11 do not overlap. The light absorbing layer 30 includes a first portion 31 and a second portion 32, the orthographic projection of the first color filter 211 on the base substrate 11 coincides with the orthographic projection of the first portion 31 on the base substrate 11, the second portion 32 is arranged along the outer boundary of the first portion 31 and connected to the first portion 31, and the orthographic projection of the second portion 32 on the base substrate 11 is located within the orthographic projection of the light shielding layer 60 on the base substrate 11.

[0089] Exemplarily, the light shielding layer 60 is located between adjacent color filters 21, and the light shielding layer 60 is separated and formed with an opening, and the orthographic projection of the opening formed by the pixel definition layer on the base substrate is located within the orthographic projection of the opening formed by the light shielding layer 60 on the base substrate. The color filter 21 is located in the opening formed by the light shielding layer 60, and both ends of the color filter 21 are in contact with the surface of the light shielding layer 60 away from the base substrate 11. The orthographic projections of adjacent color filters 21 on the base substrate 11 do not overlap, that is, the adjacent color filters 21 are separated and arranged, and the transparent layer 50 is also filled between the adjacent color filters 21. The light shielding layer 60 can be arranged in the same layer as the color filter 21, for example, the light shielding layer 60 and the color filter 21 are both located on the surface of the side of the encapsulation layer away from the base substrate 11. The light shielding layer 60 and the color filter can be formed simultaneously using the same process, or they can be formed successively using different processes.

[0090] Exemplarily, the orthographic projection of the first color filter 211 on the base substrate 11 coincides with the orthographic projection of the first portion 31 on the base substrate 11, that is, the area of ​​the first portion 311 is equal to the area of ​​the first color filter 211, and the first portion 311 and the first color filter 211 are arranged opposite each other. The second portion 32 is arranged along the outer boundary of the first portion 31 and connected to the first portion 31, and the orthographic projection of the second portion 32 on the base substrate 11 is located within the orthographic projection of the light shielding layer 60 on the base substrate 11, so that the second portion 32 extends out of the boundary of the first color filter 211, which can further improve the protection of the first color filter 211.

[0091] Reference Fig. 9, the width of the second portion 32 is greater than 1 μm, and the width of the second portion 32 is the distance between one end of the second portion 32 away from the first portion 31 and one end of the second portion 32 close to the first portion 31. The width of the second portion 32 is b1, b1>1 μm, so that the outer boundary of the light absorbing layer 30 extends at least 1 μm relative to the outer boundary of the first color film 211, so that the light absorbing layer 30 can completely block the first color film 211.

[0092] Reference Fig. 9 , exemplarily, the size of the first part 31 in the first direction is equal to the size of the second part 32 in the first direction. The size of the first part 31 in the first direction is h1, and the size of the first color film 211 in the first direction is h2, h1≥0.1*h2, and the first direction is a direction perpendicular to the base substrate 11. The size of the first part 31 in the first direction is the thickness of the first part 31, and the size of the first color film 211 in the first direction is the thickness of the first color film 211. The embodiment of the present disclosure, by setting the thickness relationship between the first part 31 and the first color film 211, is conducive to ensuring the protection effect of the first part 31 located on the first color film 211 and improving the display effect.

[0093] In one embodiment, the first preset wavelength ranges from 450 nm to 500 nm. Exemplarily, the light of the first preset wavelength may be ultraviolet light and blue light, and the light absorbing layer 30 may absorb the ultraviolet light and blue light incident on the display panel from external natural light.

[0094] In one embodiment, the first color filter 211 includes a green color filter, the preset pigment material includes a phthalocyanine material, and the material of the light absorbing layer 30 includes a yellow pigment.

[0095] Fig.10 is the spectral peak type of the light absorption layer. Fig.10 As shown, the horizontal axis represents the wavelength of light and the vertical axis represents the transmittance. Fig.10 The middle position a can represent the climbing starting point of the light absorption layer spectrum position a, that is, the climbing arc and the focus of the horizontal axis, and position a is between 460nm-500nm. Position b represents the transmittance of the light absorption layer spectrum peak, and the value is 50%-100%. At the left position of position a, the light absorption layer can absorb light of this wavelength. The material of the light absorption layer 30 includes yellow pigment, which can absorb light of 450nm-500nm wavelength.

[0096] Figure 11a-Figure 11c This is a schematic diagram for simulation verification comparison. Fig.11a This is a schematic diagram for comparing the simulation verification of the light-blocked area and the unblocked area. Fig.11a As shown, Fig.11a The left area is the display screen of the light-blocked area. Fig.11aThe right area is the display screen of the unobstructed area, and the other relevant conditions of the left area and the right area are the same. Fig.11a In the left and right areas of the display panel, the color of the display picture in the left area of ​​the display panel is normal, and the color of the display picture in the right area of ​​the display panel is reddish, that is, the transmittance of the green color film is reduced under light irradiation, resulting in abnormal display picture.

[0097] Fig.11b This is a schematic diagram of the simulation verification comparison between a yellow pigment light absorbing layer and a non-light absorbing layer. Fig.11b As shown, Fig.11b The middle area is a display screen with a light-absorbing layer of yellow pigment. Fig.11b The peripheral area is a display screen without a light absorption layer. Both are exposed to the same lighting conditions, and other related conditions are controlled to be the same. Fig.11b The middle area and the outer area of ​​the display panel display the picture normally. Fig.11a The left area displays the same picture, and the peripheral area of ​​the display panel displays the picture in red color, that is, the green color film provided with a light absorption layer containing yellow pigment has normal transmittance under light irradiation conditions.

[0098] Fig.11c This is a schematic diagram of the simulation verification comparison between a blue pigment light absorbing layer and a non-light absorbing layer. Fig.11c As shown, Fig.11c The middle area is a display screen with a light-absorbing layer of blue pigment. Fig.11c The peripheral area is a display screen without a light absorption layer. Both are exposed to the same lighting conditions, and other related conditions are controlled to be the same. Fig.11c The color of the picture displayed in the middle area and the peripheral area of ​​the display panel is red, that is, the green color film with a light absorption layer containing a blue pigment has a reduced transmittance under light irradiation conditions, resulting in abnormal display, and the blue pigment cannot protect the green color film.

[0099] Depend on Figure 11a-Figure 11c From the simulation verification comparison diagram, it can be seen that after setting the light absorption layer containing yellow pigment, the display screen did not show any light-induced discoloration, which is consistent with the effect of completely isolating the light. However, after using the light absorption layer containing blue pigment, the display screen showed reddish discoloration, thus confirming that the B-band absorption of phthalocyanine materials is the main band of light-induced discoloration.

[0100] In the display panel of the disclosed embodiment, a light absorbing layer 30 containing a yellow pigment is coated on the side of the green color film containing the phthalocyanine material facing away from the base substrate. The yellow pigment of the light absorbing layer 30 can absorb ultraviolet light and blue light of a first preset wavelength of 450nm-500nm in the external natural light, so that the B-band energy level transition of the phthalocyanine material in the green color film will not be triggered, that is, the intersystem crossing of the singlet and triplet electrons of the phthalocyanine material will not be triggered, thereby avoiding the occurrence of light-induced isomerization of the phthalocyanine material and ensuring the light resistance stability of the green color film.

[0101] Exemplarily, the light absorbing layer 30 uses yellow pigment, which has good light resistance and does not fade under ultraviolet light or high temperature and high humidity. For example, the light absorbing layer can be a positive photoresist or a negative photoresist.

[0102] Exemplarily, the material of the light absorbing layer 30 includes epoxy resin, acrylic resin, polyisoprene resin, vinyl resin, polyurethane resin, siloxane resin, polyimide resin, and the like.

[0103] Reference Figure 8 As shown, in one embodiment, the color filter 21 also includes a second color color filter 212, which can transmit the second color light emitted by the light-emitting device 12, and the orthographic projection of the light absorbing layer 30 on the base substrate 10 has no overlap with the orthographic projection of the second color color filter 212 on the base substrate 10.

[0104] Exemplarily, the first color light includes green light, and the second color light includes blue light. The yellow pigment of the light absorbing layer 30 can absorb the incident ultraviolet light and blue light in the external ambient light, and the orthographic projection of the light absorbing layer 30 on the base substrate 10 does not overlap with the orthographic projection of the second color film 212 on the base substrate 10, so that the light absorbing layer 30 can be prevented from absorbing the blue light emitted by the light emitting device, thereby affecting the display effect of the display panel.

[0105] In one embodiment, the color filter 21 further includes a third color color filter 213 , which can transmit the third color light emitted by the light emitting device 12 , and the orthographic projection of the light absorbing layer 30 on the base substrate at least partially overlaps with the orthographic projection of the third color color filter 213 on the base substrate 10 .

[0106] Exemplarily, the first color light includes green light, and the third color light includes red light. Fig.12 It is a schematic diagram of the light transmittance of the light absorption layer. Fig.12As shown, the intersection position c of the ascending arc of the light absorbing layer 30 and the horizontal coordinate is located between 480nm and 520nm, that is, the yellow pigment of the light absorbing layer 30 has high transmittance in the red band and the green band. Therefore, the light absorbing layer 30 in the embodiment of the present disclosure can cover the first color filter 211, the third color filter 213 and the light shielding layer 60.

[0107] Exemplarily, the first color light includes green light, the second color light includes blue light, and the third color light includes red light. The third color filter 213 is a red filter, and the first color filter 211 is a green filter. The reflectivity of the red filter is greater than that of the green filter and the blue filter. Covering the light absorption layer 30 on the surface of the red filter can reduce the surface reflectivity of the red filter. Moreover, providing the light absorption layer 30 on the surface of the light shielding layer can reduce the reflectivity, so that the hue adjustment space is larger.

[0108] In one embodiment, the color filter 21 further includes a second color color filter 212 and a third color color filter 213, the second color color filter 212 can transmit the second color light emitted by the light emitting device 12, and the orthographic projection of the light absorbing layer 30 on the base substrate 11 does not overlap with the orthographic projection of the second color color filter 212 on the base substrate 11. The third color color filter 213 can transmit the third color light emitted by the light emitting device 12, and the orthographic projection of the light absorbing layer 30 on the base substrate 11 at least partially overlaps with the orthographic projection of the third color color filter 213 on the base substrate 11.

[0109] Fig.13 FIG. 1 is a cross-sectional schematic diagram of a display panel of the related art. Fig.13 As shown, the display panel of the related art includes a display substrate, a touch structure layer (FMLOC) and a color filter film (COE). The display substrate includes a base substrate (BP), a light emitting device (EV) located on one side of the base substrate, and an encapsulation layer (EN) located on the side of the light emitting device away from the base substrate. The touch structure layer includes a barrier layer (Barrier) located on the side of the encapsulation layer away from the base substrate, a first metal layer (Bridge) located on the side of the barrier layer away from the base substrate, an insulating protective layer (VIA) located on the side of the first metal layer away from the base substrate, a second metal layer (Tx / Rx) located on the side of the insulating protective layer away from the base substrate, and a transparent flat layer (OC2) located on the side of the second metal layer away from the base substrate. The color filter film includes a light shielding layer (BM) and a color filter (RGB) arranged on the same layer, and a transparent flat layer (OC3) located on the side of the light shielding layer and the color filter away from the base substrate.

[0110] like Fig.13As shown, the display panel further includes a cover glass (Cover Glass, CG), and the cover glass is connected to the color filter film via optically clear adhesive (Optically Clear Adhesive, OCA).

[0111] Fig.14 FIG. 1 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure. Fig.14 In one embodiment, the display panel further includes an encapsulation layer 15 and a touch structure layer 40 , and the encapsulation layer 15 is located on a side of the light emitting device 12 away from the base substrate 11 .

[0112] Exemplarily, the touch structure layer 40 includes a first metal layer 41, an inorganic insulating layer 42 and a second metal layer 43. The first metal layer 41 is located on the side of the encapsulation layer 15 away from the base substrate 11, the inorganic insulating layer 42 is located on the side of the first metal layer 41 away from the base substrate 11, and the second metal layer 43 is located on the side of the inorganic insulating layer 42 away from the base substrate 11.

[0113] Exemplarily, the first metal layer 41 includes a bridge line, and the second metal layer 43 includes a first touch line Tx and a second touch line Rx. The material of the first metal layer and the second metal layer can be any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), or alloy materials of the above metals.

[0114] like Fig.14 As shown, exemplarily, the display panel also includes a light-shielding layer 60, which is located on the side of the second metal layer 43 away from the base substrate 11, the filter layer 20 is located on the side of the light-shielding layer 60 away from the base substrate 11, the light-shielding layer 60 is located between adjacent color filters 21, and the orthographic projections of the first metal layer 41 and the second metal layer 43 on the base substrate 11 are both located within the orthographic projection of the light-shielding layer 60 on the base substrate 11.

[0115] like Fig.14 As shown, the display panel further includes a first transparent flat layer 71 and a second transparent flat layer 72 . The first transparent flat layer 71 is located between the light absorbing layer 30 and the filter layer 20 , and the second transparent flat layer 72 is located on the side of the light absorbing layer 30 away from the base substrate 11 .

[0116] Exemplarily, the inorganic insulating layer 42 includes materials such as silicon nitride or silicon oxide.

[0117] The display panel of the embodiment of the present disclosure combines the filter layer, the light shielding layer and the touch structure layer, and makes the light shielding layer contact with the second metal layer 43, and Fig.13 The transparent flat layer (OC2) of the touch structure layer of the related art is disposed on the side of the light absorbing layer 30 away from the base substrate.

[0118] Fig.15 FIG. 1 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure. Fig.15 The display panel further includes a packaging layer 15 and a touch structure layer 40 . The packaging layer 15 is located on a side of the light emitting device 12 away from the base substrate 11 .

[0119] like Fig.15 As shown, the touch structure layer 40 includes a first metal layer 41, an organic insulating layer 44 and a second metal layer 43. The first metal layer 41 is located on the side of the encapsulation layer 15 away from the base substrate 11, the filter layer 20 is located on the side of the encapsulation layer 15 away from the base substrate 11, the first metal layer 41 is located between adjacent color filters 21, the organic insulating layer 44 is located on the side of the first metal layer 41 and the filter layer 20 away from the base substrate 11, and the second metal layer 43 is located on the side of the organic insulating layer 44 away from the base substrate 11.

[0120] Exemplarily, the first metal layer 41 includes a bridge line, and the second metal layer 43 includes a first touch line Tx and a second touch line Rx. The material of the first metal layer and the second metal layer can be any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), or alloy materials of the above metals.

[0121] like Fig.15 As shown, the display panel also includes a light-shielding layer 60, which is located on the side of the second metal layer 43 away from the base substrate 11, the light-shielding layer 60 is located between adjacent color filters 21, the orthographic projections of the first metal layer 41 and the second metal layer 43 on the base substrate 11 are located within the orthographic projections of the light-shielding layer 60 on the base substrate 11, and the light-absorbing layer 30 is located on the side of the light-shielding layer 60 away from the base substrate 11.

[0122] Exemplarily, the organic insulating layer 44 may include epoxy resin, acrylic resin, polyisoprene resin, vinyl resin, polyurethane resin, siloxane resin, polyimide resin, or the like.

[0123] Exemplarily, the display panel further includes a transparent flat layer OC, and the transparent flat layer OC is located on a side of the light absorbing layer 30 and the light shielding layer 60 that is away from the base substrate 11 .

[0124] The display panel of the disclosed embodiment combines a filter layer, a light-shielding layer and a touch structure layer, makes the light-shielding layer contact with the second metal layer 43, fills the color film 21 with the organic insulating layer 44, and then arranges the light-shielding layer on the side of the organic insulating layer away from the base substrate, and arranges the light-shielding layer and the light-absorbing layer on the same layer, so that only a transparent flat layer needs to be arranged on the side of the light-absorbing layer away from the base substrate, which can reduce the number of transparent flat layers.

[0125] The present disclosure also provides a display device, including a display panel according to any one of the present disclosure embodiments. The display device according to the present disclosure embodiment can prevent the first color filter 211 of the filter layer 20 from reducing transmittance under the influence of external ambient light, thereby improving the quality of the display product.

[0126] Exemplarily, the display device may be an organic light emitting diode display device or a quantum dot light emitting diode display device.

[0127] The display device provided in the embodiments of the present disclosure may be any product or component with display and touch functions, such as a smart phone, a wearable smart watch, smart glasses, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, a car display, an e-book, a biometric device such as a smart skin device, a soft robot, and a biomedical device.

[0128] The display panel and other components of the display device in the above-mentioned embodiment may adopt various technical solutions known to ordinary technicians in the field now and in the future, and will not be described in detail here.

[0129] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0130] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0131] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0132] In the present disclosure, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0133] The disclosure above provides many different embodiments or examples to implement different structures of the present disclosure. In order to simplify the present disclosure, the components and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0134] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, It is characterized in that include: A display substrate, comprising a base substrate and a light emitting device located on one side of the base substrate; a filter layer, located on a side of the light emitting device away from the base substrate, the filter layer comprising a color filter corresponding to the light emitting device, the color filter comprising a first color color filter, the first color color filter being able to transmit a first color light emitted by the light emitting device, the material of the first color color filter comprising a preset pigment material, the preset pigment material undergoing light-controlled isomerization under irradiation with a first preset wavelength so that the transmittance of the first color color filter is reduced; The light absorbing layer is located on the side of the filter layer away from the base substrate, the orthographic projection of the first color filter on the base substrate is located within the orthographic projection of the light absorbing layer on the base substrate, the light absorbing layer is configured to absorb the light of the first preset wavelength, and the light absorbing layer can allow the first color light emitted from the first color filter to pass through.

2. The display panel according to claim 1, It is characterized in that The display panel further includes a transparent layer, and the transparent layer is located on a side of the light absorbing layer away from the base substrate.

3. The display panel according to claim 1 or 2, It is characterized in that It also includes a shading layer, which is located between adjacent color films, and the orthographic projections of adjacent color films on the base substrate do not overlap. The light absorbing layer includes a first part and a second part, and the orthographic projection of the first color film on the base substrate coincides with the orthographic projection of the first part on the base substrate. The second part is arranged along the outer boundary of the first part and is connected to the first part, and the orthographic projection of the second part on the base substrate is located within the orthographic projection of the shading layer on the base substrate.

4. The display panel according to claim 3, It is characterized in that The width of the second portion is greater than 1 μm, and the width of the second portion is the distance between an end of the second portion away from the first portion and an end of the second portion close to the first portion.

5. The display panel according to claim 3, It is characterized in that The size of the first part in the first direction is h1, the size of the first color filter in the first direction is h2, h1≥0.1*h2, and the first direction is a direction perpendicular to the base substrate.

6. The display panel according to claim 3, It is characterized in that The second part includes a first sub-part, the orthographic projection of the first sub-part on the substrate does not overlap with the orthographic projection of the color film on the substrate, the size of the first part in the first direction is h1, the size of the first color film in the first direction is h2, the size of the first sub-part in the first direction is h3, h3≥0.2*(h1+h2), and the first direction is a direction perpendicular to the substrate.

7. The display panel according to claim 1, It is characterized in that The display panel further comprises a transparent layer, wherein the transparent layer is located between the filter layer and the light absorbing layer, and a surface of the transparent layer on a side away from the base substrate is a flat surface, and the light absorbing layer is located on the flat surface.

8. The display panel according to claim 1 or 7, It is characterized in that It also includes a shading layer, which is located between adjacent color films, and the orthographic projections of adjacent color films on the base substrate do not overlap. The light absorbing layer includes a first part and a second part, and the orthographic projection of the first color film on the base substrate coincides with the orthographic projection of the first part on the base substrate. The second part is arranged along the outer boundary of the first part and is connected to the first part, and the orthographic projection of the second part on the base substrate is located within the orthographic projection of the shading layer on the base substrate.

9. The display panel according to claim 8, It is characterized in that The width of the second portion is greater than 1 μm, and the width of the second portion is the distance between an end of the second portion away from the first portion and an end of the second portion close to the first portion.

10. The display panel according to claim 1, It is characterized in that The first preset wavelength ranges from 450nm to 500nm.

11. The display panel according to claim 1, It is characterized in that The first color filter includes a green color filter, the preset pigment material includes a phthalocyanine material, and the material of the light absorption layer includes a yellow pigment.

12. The display panel according to claim 1, It is characterized in that The color filter further includes a second color color filter, the second color color filter can transmit the second color light emitted by the light emitting device, and the orthographic projection of the light absorbing layer on the base substrate has no overlap with the orthographic projection of the second color color filter on the base substrate; and / or, The color filter also includes a third color color filter, which can transmit the third color light emitted by the light-emitting device, and the orthographic projection of the light absorbing layer on the base substrate at least partially overlaps with the orthographic projection of the third color color filter on the base substrate.

13. The display panel according to claim 12, It is characterized in that The first color light includes green light; and / or, the second color light includes blue light; and / or, the third color light includes red light.

14. The display panel according to claim 1, It is characterized in that The display panel further comprises an encapsulation layer and a touch structure layer, wherein the encapsulation layer is located on a side of the light emitting device away from the base substrate; The touch structure layer includes a first metal layer, an inorganic insulating layer and a second metal layer, the first metal layer is located on a side of the encapsulation layer away from the base substrate, the inorganic insulating layer is located on a side of the first metal layer away from the base substrate, and the second metal layer is located on a side of the inorganic insulating layer away from the base substrate; The display panel further includes a light shielding layer, the light shielding layer is located on a side of the second metal layer away from the base substrate, the filter layer is located on a side of the light shielding layer away from the base substrate, the light shielding layer is located between adjacent color filters, and the orthographic projections of the first metal layer and the second metal layer on the base substrate are both located within the orthographic projection of the light shielding layer on the base substrate; The display panel further includes a first transparent flat layer and a second transparent flat layer, wherein the first transparent flat layer is located between the light absorbing layer and the filter layer, and the second transparent flat layer is located on a side of the light absorbing layer away from the base substrate.

15. The display panel according to claim 1, It is characterized in that The display panel further comprises an encapsulation layer and a touch structure layer, wherein the encapsulation layer is located on a side of the light emitting device away from the base substrate; The touch structure layer includes a first metal layer, an organic insulating layer and a second metal layer, the first metal layer is located on a side of the encapsulation layer away from the base substrate, the filter layer is located on a side of the encapsulation layer away from the base substrate, the first metal layer is located between adjacent color filters, the organic insulating layer is located on a side of the first metal layer and the filter layer away from the base substrate, and the second metal layer is located on a side of the organic insulating layer away from the base substrate; The display panel also includes a shading layer, which is located on the side of the second metal layer away from the base substrate, the shading layer is located between adjacent color films, the orthographic projections of the first metal layer and the second metal layer on the base substrate are located within the orthographic projections of the shading layer on the base substrate, and the light absorption layer is located on the side of the shading layer away from the base substrate.

16. A display device, It is characterized in that Comprising the display panel as claimed in any one of claims 1 to 15.

Images