Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a light-emitting functional layer, a light shielding layer and a light filtering layer. The shading layer is arranged on the light-emitting side of the light-emitting functional layer; the light filtering layer is arranged on the side, away from the light-emitting functional layer, of the light shielding layer, and the light shielding layer comprises a plurality of openings in one-to-one correspondence with the light-emitting units and light shielding parts between the adjacent openings; wherein the light filtering layer covers the shading part and the opening, and the light filtering layer is configured to selectively transmit red light, blue light and green light. According to the display panel, the reflectivity of ambient light is effectively reduced, the spectrum of reflected light is narrowed, the hues of the display area and the non-display area of the display panel during screen turn-off are improved, and therefore the appearance taste is improved.

Description

TECHNICAL FIELD

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

[0002] Currently, a polarizer (POL) is arranged on the light-out side of a display panel, which can effectively reduce the reflectivity of the surface of the display panel under strong ambient light. However, the arrangement of the polarizer loses nearly 58% of the light-out. For an organic light emitting diode (OLED) display panel, this greatly increases the life burden thereof. Moreover, the polarizer has a large thickness and a fragile material, which is not conducive to the development of dynamic bending products. In order to develop dynamic bending products based on OLED display technology, new materials, new technologies and new processes must be introduced to replace the polarizer.

[0003] The technology of using a color filter (CF) to replace the POL is a polarizer-less (POL-less) technology, which not only reduces the thickness of the functional layer from about 100 μm to less than 5 μm, but also increases the light-out rate of the display panel from 42% to 60%. However, the color filter is composed of red (R), green (G), blue (B) and a black matrix (BM). In an OLED display panel, the R / G / B color resistances are respectively arranged corresponding to the R / G / B sub-pixels of the organic light emitting layer, for selectively transmitting RGB light; and the black matrix is mainly used for preventing light leakage of the display panel and reducing the reflectivity of the surface of the display panel. However, due to the thickness of the CF and the opening size of the BM, the hue and the reflectivity of the display panel in the off-screen state will deviate, resulting in poor appearance taste. SUMMARY

[0004] Embodiments of the present application provide a display panel and a display device, which reduce the reflectivity of ambient light on the surface of the display panel and narrow the spectrum of reflected light, thereby improving the hue of the display area and the non-display area of the display panel in the off-screen state and improving the appearance taste.

[0005] In order to achieve the above-mentioned purpose, according to a first aspect of the present application, a display panel is provided, which comprises:

[0006] A light-emitting functional layer comprising a plurality of light-emitting units arranged at intervals;

[0007] A light-shielding layer arranged on the light-out side of the light-emitting functional layer; the light-shielding layer comprises a plurality of openings corresponding to the plurality of light-emitting units one by one and a light-shielding portion located between any two adjacent openings; and

[0008] a filter layer disposed on a side of the light shielding layer away from the light emitting functional layer;

[0009] The filter layer covers the light shielding portion and the opening, and is configured to selectively transmit red light, blue light, and green light.

[0010] Optionally, the filter layer includes a hue adjusting layer configured to selectively transmit red light, blue light, and green light; the hue adjusting layer fills in the opening and extends to cover the light shielding portion.

[0011] Optionally, the filter layer includes a hue adjusting layer and a color resist layer, and the hue adjusting layer and the color resist layer are configured to selectively transmit red light, blue light, and green light.

[0012] The color resist layer fills in the opening, and the hue adjusting layer covers the color resist layer and the light shielding portion.

[0013] Optionally, the plurality of light emitting units include red light emitting units, blue light emitting units, and green light emitting units.

[0014] In a transmission spectrum of the hue adjusting layer, there is a first peak in a blue light wavelength range and a second peak in a green light wavelength range; a difference between a position of the first peak and a spectral peak of light emitted by the blue light emitting units is less than or equal to 20 nanometers, and a difference between a position of the second peak and a spectral peak of light emitted by the green light emitting units is less than or equal to 20 nanometers; a light having a wavelength corresponding to a spectral peak of light emitted by the red light emitting units has a transmittance of the hue adjusting layer greater than or equal to 40%.

[0015] Optionally, in the transmission spectrum of the hue adjusting layer, the first peak is in a wavelength range of 450 nanometers to 460 nanometers; and / or, the second peak is in a wavelength range of 520 nanometers to 530 nanometers.

[0016] Optionally, the first wave peak corresponding wavelength is defined as N1, a range between [N1-20, N1+20] is defined as a first wave peak appearance range, a transmittance of at least part of light containing the N1 wavelength in the first wave peak appearance range is 60% to 70% through the color phase adjusting layer; the second wave peak corresponding wavelength is defined as N2, a range between [N2-20, N2+20] is defined as a second wave peak appearance range, a transmittance of at least part of light containing the N2 wavelength in the second wave peak appearance range is greater than or equal to 55% through the color phase adjusting layer; a spectral peak of light emitted by the red light emitting unit is defined as N3, a range between [N3-20, 780] is defined as a third wave peak appearance range, a transmittance of at least part of light containing the N3 wavelength in the third wave peak appearance range is greater than or equal to 55% through the color phase adjusting layer.

[0017] Optionally, a thickness of the color phase adjusting layer ranges from 1 micrometer to 4 micrometers.

[0018] Optionally, a material of the light shielding layer is selected from black color resist.

[0019] Optionally, the color resist layer includes red color resist, green color resist and blue color resist; the light shielding layer is stacked by at least two of the red color resist, the green color resist and the blue color resist.

[0020] The display device provided in the present application comprises the display panel, and the filter layer is located on a side of the light shielding layer away from the light emitting functional layer.

[0021] In the display panel and the display device provided in the present application, the filter layer is arranged on the light shielding layer of the display panel, and the filter layer can selectively transmit red light, green light and blue light. At least part of light rays incident from the outside to the inside of the display panel and reflected to the light shielding layer is further filtered by the filter layer, so that the reflectivity of ambient light is effectively reduced, the spectrum of reflected light is narrowed, and the color phase of the display area and the non-display area of the display panel in the off-screen state is improved, thereby improving the appearance taste.

[0022] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0024] For a more complete understanding of the present application and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings in which like reference numerals refer to like parts:

[0025] Figure 1 is a structural schematic diagram of a display panel according to an embodiment of the present application;

[0026] Figure 2 is a structural schematic diagram of a display panel according to another embodiment of the present application;

[0027] Figure 3 is a transmission spectrum diagram of a hue adjusting layer according to an embodiment of the present application;

[0028] Figure 4 is a structural schematic diagram of a display device according to an embodiment of the present application.

[0029] Legend: 10, display device; 100, display panel; 200, protective layer; 1, light-emitting functional layer; 101, light-emitting unit; 2, light-blocking layer; 201, opening; 202, light-blocking part; 3, light-filtering layer; 301, hue adjusting layer; 302, color-resistance layer; 4, encapsulating layer; 401, first inorganic encapsulating layer; 402, organic encapsulating layer; 403, second inorganic encapsulating layer; 5, touch functional layer; 501, wiring area; 6, optically transparent adhesive layer. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0031] In the PLP type OLED display panel, the R / G / B color resistances are respectively arranged corresponding to the R / G / B sub-pixels of the organic light-emitting layer, for selectively transmitting RGB light; and the BM is mainly used for preventing light leakage of the display panel and reducing the reflectivity of the surface of the display panel. Although the reflectivity of the ambient light can be reduced by increasing the light shielding area of the BM, many display products have screen fingerprint recognition or under-screen camera functions, which require corresponding openings on the BM of the CF. If the opening is small, it will cause insufficient light entering of the under-screen optical device (such as a camera), affecting the optical performance. If the opening is too large, the ambient light can be incident into the display panel through the opening, and after being reflected multiple times, it will be reflected from the CF layer, thereby causing the reflectivity of the ambient light to increase. Due to the influence of the thickness of the CF, the change of the thickness of the CF will cause thin film interference of light between the CF layer and the substrate, and when the thickness deviates, the reflected light of a specific wavelength may be interfered due to phase difference, causing color phase shift.

[0032] To achieve the above-mentioned purpose, according to the first aspect of the present application, referring to Figures 1 to 2 The display panel 100 includes a light-emitting functional layer 1, a light shielding layer 2, and a light filtering layer 3. The light-emitting functional layer 1 includes a plurality of light-emitting units 101 arranged at intervals; the light shielding layer 2 is arranged on the light-emitting side of the light-emitting functional layer 1; the light shielding layer 2 includes a plurality of openings 201 corresponding to the plurality of light-emitting units 101 one by one and a light shielding part 202 located between any two adjacent openings 201; and the light filtering layer 3 is arranged on the side of the light shielding layer 2 away from the light-emitting functional layer 1; wherein the light filtering layer 3 covers the light shielding part 202 and the opening 201, and the light filtering layer 3 is configured to selectively transmit red light, blue light and green light.

[0033] It can be understood that in the embodiments of the present application, selectively transmitting red light, blue light and green light means increasing the light transmittance of light in a specific wavelength range or a non-specific wavelength range in the red light region, increasing the light transmittance of light in a specific wavelength range or a non-specific wavelength range in the blue light region, and increasing the light transmittance of light in a specific wavelength range or a non-specific wavelength range in the green light region.

[0034] In the embodiments of the present application, the light filtering layer 3 covering the light shielding part 202 and the opening 201 can be direct covering, for example, the light filtering layer directly fills the opening and directly interfaces with the light shielding part; or indirect covering, for example, other film layers are added between the light shielding part and the light filtering layer and / or other materials are filled in the opening, and then interface with the light filtering layer.

[0035] The display panel 100 and the display device provided in the present application have the following advantages. The light filter layer 3 is arranged on the light shielding layer 2 of the display panel 100, and the light filter layer 3 can selectively transmit red light, green light and blue light. Therefore, at least part of the light that is incident on the inside of the display panel 100 from the outside and is reflected to the light shielding layer 2 is further filtered by the light filter layer 3. As a result, the reflectivity of the ambient light is effectively reduced, the spectrum of the reflected light is narrowed, and the hue of the display area and the non-display area of the display panel 100 in the off-screen state is improved, thereby improving the appearance taste.

[0036] Generally, in the POL-less technology, a color filter is used instead of a polarizer, and the color filter is composed of B, R, G color resistances and BM. Therefore, the traditional color filter process needs four processes of B, R, G color resistances and BM, which greatly affects the yield and cost of the OLED panel.

[0037] To this end, see Figure 1 In some embodiments, the light filter layer 3 includes a hue adjusting layer 301 configured to selectively transmit red light, blue light and green light; the hue adjusting layer 301 is filled in the opening 201 and extends to cover the light shielding portion 202.

[0038] Since the hue adjusting layer 301 can selectively transmit red light, blue light and green light, it can replace the RGB color resistances in the color filter to adjust the hue to a certain extent, and the preparation process of the RGB color resistances can be omitted in the corresponding process, thereby effectively simplifying the process and improving the yield of the product.

[0039] The RGB color resistances in the color filter will cause the transmitted light to have hue deviation due to thickness variation, process error, material itself and other reasons, which affects the display effect of the display panel 100. To solve this problem, see Figure 2 In some embodiments, the light filter layer 3 includes a hue adjusting layer 301 and a color resistance layer 302, the hue adjusting layer 301 and the color resistance layer 302 are configured to selectively transmit red light, blue light and green light; the color resistance layer 302 is filled in the opening 201, and the hue adjusting layer 301 covers the color resistance layer 302 and the light shielding portion 202. The light emitted by the light emitting unit 101 is first modulated (filtered) by the color resistance layer 302, and then is secondly modulated by the hue adjusting layer 301, thereby further optimizing the hue and further improving the display effect of the display panel 100.

[0040] In some embodiments, the color resistance layer 302 includes a plurality of red color resistances, a plurality of green color resistances and a plurality of blue color resistances.

[0041] The hue adjusting layer 301 of the display panel 100 in the embodiments of the present application completely covers the light shielding layer 2, can simultaneously adjust the light of the display area and the non-display area of the display panel 100, optimizes the hue of the light emitting side of the display panel 100 in the off-screen state, and reduces the ambient light reflectivity. In addition, the hue adjusting layer 301 can also play the role of a planarization layer to protect the internal structure of the display panel 100. Moreover, the design that the hue adjusting layer 301 simultaneously covers the light shielding part 202 and the opening 201 can reduce the alignment difficulty in the preparation process, help to simplify the process and improve the yield of the display panel 100.

[0042] In some embodiments, the plurality of light emitting units 101 includes a red light emitting unit, a blue light emitting unit and a green light emitting unit. Referring to Figure 3 , the transmission spectrum of the hue adjusting layer 301 has a first peak in the blue light wavelength range and a second peak in the green light wavelength range; the difference between the position of the first peak and the spectral peak of the light emitted by the blue light emitting unit is less than or equal to 20 nanometers, and the difference between the position of the second peak and the spectral peak of the light emitted by the green light emitting unit is less than or equal to 20 nanometers; the transmittance of the light with the corresponding wavelength of the spectral peak of the red light emitted by the red light emitting unit in the hue adjusting layer 301 is greater than or equal to 40%.

[0043] In the embodiments of the present application, the difference is the absolute value of the difference between the first peak and the second peak in the transmission spectrum of the hue adjusting layer 301 and the spectral peak of the light emitted by the blue light emitting unit and the spectral peak of the light emitted by the green light emitting unit, respectively.

[0044] It can be understood that when the filter layer 3 includes the hue adjusting layer 301 and the color filter layer 302, the red color filter, the green color filter and the blue color filter are respectively arranged one-to-one with the red light emitting unit, the blue light emitting unit and the green light emitting unit. The spectral peak of the red light emitted by the red light emitting unit should be in the red light region, that is, greater than 600 nm.

[0045] The transmission spectrum of the hue adjusting layer 301 reflects the transmittance of light of different wavelengths in the hue adjusting layer 301, has a first peak in the blue wavelength range, which means that the light wave corresponding to the first peak has the maximum transmittance in the hue adjusting layer 301 in the blue wavelength range; has a second peak in the green light wavelength range, which means that the light wave corresponding to the second peak has the maximum transmittance in the hue adjusting layer 301 in the green light wavelength range. Corresponding the peak position in the transmission spectrum of the hue adjusting layer 301 and the peak position of the spectrum of the light emitted by the light emitting unit 101, not only can adjust the ambient reflected light and the hue in the off-screen state, ensure the light emission in the display state, but also can play the role of adjusting the hue in the display state.

[0046] In some embodiments, when the red light emitting unit has a light emitting peak at 630 nm, the green light emitting unit has a light emitting peak at 530 nm, and the blue light emitting unit has a light emitting peak at 460 nm, the color hue adjusting layer 301 has a first peak in a wavelength range of 450 nm to 460 nm and a second peak in a wavelength range of 520 nm to 530 nm in the transmission spectrum.

[0047] It can be understood that, in the embodiments of the present application, the color hue adjusting layer 301 and the color filter layer 302 have peaks and valleys at the same time, and the corresponding values of the valleys need to have a corresponding relationship with the light emitting units.

[0048] For example, the transmittance of the color hue adjusting layer 301 is less than 20% in a wavelength range less than 380 nm. The color hue adjusting layer 301 filters ultraviolet light below 380 nm, which helps to reduce the potential harm of ultraviolet light to the human eye and improve the safety of the display panel 100. When the red light emitting unit has a light emitting peak at 630 nm, the green light emitting unit has a light emitting peak at 530 nm, and the blue light emitting unit has a light emitting peak at 460 nm, in some embodiments, the transmittance of the color hue adjusting layer 301 is less than or equal to 40% at wavelengths of 500 nm and 600 nm. Controlling the wavelengths of 500 nm and 600 nm can further narrow the spectrum and improve the ambient light reflectivity, and at the same time, further optimize the display color hue when the light emitting unit is working.

[0049] In some embodiments, the wavelength corresponding to the first peak is defined as N1, the range between [N1-20, N1+20] is defined as the first peak appearance range, and the transmittance of at least part of light containing the N1 wavelength in the first peak appearance range through the color hue adjusting layer 301 is 60% to 70%; the wavelength corresponding to the second peak is defined as N2, the range between [N2-20, N2+20] is defined as the second peak appearance range, and the transmittance of at least part of light containing the N2 wavelength in the second peak appearance range through the color hue adjusting layer 301 is greater than or equal to 55%; the spectral peak of the light emitted by the red light emitting unit is defined as N3, and the range between [N3-20, 780] is defined as the third peak appearance range. The transmittance of at least part of light containing the N3 wavelength in the third peak appearance range through the color hue adjusting layer is greater than or equal to 55%.

[0050] It can be understood that the above definition does not include light greater than 780 nm, and in the embodiments of the present application, the transmittance of light greater than 780 nm through the color hue adjusting layer can be less than, greater than, or equal to 55%.

[0051] In some embodiments, the first peak is in a wavelength range of 450 nm to 460 nm, the transmittance of light containing the first peak in a wavelength range of 450 nm to 460 nm in the first peak appearance range through the color phase adjusting layer 301 is in a range of 60% to 70%, the second peak is in a wavelength range of 520 nm to 530 nm, the transmittance of light containing the second peak in a wavelength range of 520 nm to 530 nm in the second peak appearance range through the color phase adjusting layer 301 is greater than or equal to 55%, the red light emitting unit has a light emitting peak value of 630 nm, the [610, 780] is a third peak appearance range, and the transmittance of light containing the third peak in a wavelength greater than or equal to 620 nm in the third peak appearance range through the color phase adjusting layer 301 is greater than or equal to 55%.

[0052] In the embodiments of the present application, the light in the wavelength range of 450 nm to 460 nm has a minimum transmittance, and the minimum transmittance is set as follows:

[0053]

[0054] wherein T(λ) EL B represents the transmittance of blue light of the blue light emitting unit, T(λ) CF B represents the transmittance of blue light through the blue color barrier, the transmittance is integrated in the visible light band of 380 nm to 780 nm, EL power is the integral ratio of the final light emission to the light emission integral of the EL device, and EL power is set to be about equal to 42%, and finally T(λ) 色相调节层 , that is, the minimum transmittance of the color phase adjusting layer in the wavelength range of 450 nm to 460 nm. In the embodiments of the present application, according to the calculation, the minimum transmittance of the light in the wavelength range of 450 nm to 460 nm through the color phase adjusting layer 301 is set to 60%.

[0055] In the embodiments of the present application, the light in the wavelength range of 520 nm to 530 nm has a minimum transmittance, and the minimum transmittance is set as follows:

[0056]

[0057] wherein T(λ) EL G represents the transmittance of green light of the green light emitting unit, T(λ) CF G represents the transmittance of green light through the green color barrier, the transmittance is integrated in the visible light band of 380 nm to 780 nm, EL power is the integral ratio of the final light emission to the light emission integral of the EL device, and EL power is set to be about equal to 42%, and finally T(λ) 色相调节层, i.e. the minimum transmittance of the hue adjusting layer in the wavelength range of 520 nm to 530 nm. In the embodiment of the present application, the minimum transmittance of light in the wavelength range of 520 nm to 530 nm through the hue adjusting layer 301 is set to 55% according to calculation.

[0058] In the embodiment of the present application, the setting method of the minimum transmittance in the wavelength range greater than 620 nm is:

[0059]

[0060] wherein T(λ) EL R T(λ) represents the red light transmittance of the red light emitting unit, T(λ) CF R T(λ) represents the red light transmittance through the red color blocking layer, generally taking the visible light wavelength range of 380 nm to 780 nm to integrate the transmittance, EL power is the integral ratio of the final light emission to the light emission integral of the EL device, and the EL power is set to be about equal to 42%, and finally T(λ) 色相调节层 , i.e. the minimum transmittance of the hue adjusting layer in the wavelength range greater than 620 nm; in the embodiment of the present application, the minimum transmittance of light in the wavelength range greater than 620 nm through the hue adjusting layer 301 is set to 55% according to calculation.

[0061] In the embodiment of the present application, the EL power of formulas (1) to (3) is set to be about equal to 42%, and 42% is a typical transmittance of a polarizer. When the value is set to 42% in the case of no polarizer, it can be used to deduce to match the existing optical system, and design the minimum transmittance of light through the hue adjusting layer.

[0062] In the embodiment of the present application, the transmittance of the hue adjusting layer 301 to the blue light wavelength range (wavelength range of 450 nm to 460 nm) is greater than 60%, the transmittance of the hue adjusting layer 301 to the green light wavelength range (wavelength range of 520 nm to 530 nm) is greater than 55%, and the transmittance of the hue adjusting layer 301 to the red light wavelength range (greater than 620 nm) is greater than 55%, which can ensure that the light of the light emitting unit 101 transmits through the display panel 100 and avoid color accuracy value attenuation.

[0063] Meanwhile, the inventor team finds that the light transmittance of the color phase adjustment layer 301 for green light segment wavelength and red light segment wavelength continues to improve in the range of more than 55%, and has little effect on the display panel in the off-screen state, while the light transmittance of the color phase adjustment layer 301 for blue light continues to improve, which has a greater effect on the display panel in the off-screen state, and the color gradually turns blue in the off-screen state. The inventor research team finds that when the light transmittance range of the color phase adjustment layer for blue light is controlled to be not more than 70%, the display panel can be biased to pure black in the off-screen state, that is, the light transmittance for blue light needs to be limited in the range of 60% to 70%, which can ensure the transmittance of the display panel 100 of the light emitting unit 101, ensure the color accuracy value, and also ensure the pure black effect in the off-screen state.

[0064] In some embodiments, the thickness of the color phase adjustment layer 301 is in the range of 1 micrometer to 4 micrometers, for example, 1 micrometer, 2 micrometers, 3 micrometers and 4 micrometers. When the thickness of the color phase adjustment layer 301 is less than 1 micrometer, the material will be fragile, which will reduce the mechanical properties of the display panel 100 and reduce the ambient light reflectivity. When the thickness of the color phase adjustment layer 301 is greater than 4 micrometers, although the ambient light reflectivity is improved, the power consumption of the display panel during use will be too large.

[0065] In the embodiments of the present application, the material of the light shielding layer 2 is selected from black color resistance, or the light shielding layer 2 is stacked by at least two of red color resistance, green color resistance and blue color resistance.

[0066] In some embodiments, the display panel 100 further comprises an encapsulation layer 4, which is arranged between the light emitting functional layer 1 and the light shielding layer 2. In the embodiments of the present application, the encapsulation layer 4 can be assembled by an inorganic film layer and an organic film layer. For example, in a specific embodiment, the encapsulation layer 4 comprises a first inorganic encapsulation layer 401, an organic encapsulation layer 402 and a second inorganic encapsulation layer 403 which are sequentially stacked, wherein the first inorganic encapsulation layer 401 is arranged between the light shielding layer 2 and the organic encapsulation layer 402, and the second inorganic encapsulation layer 403 is arranged between the organic encapsulation layer 402 and the light emitting functional layer 1. Moreover, the encapsulation layer 4 completely covers the light emitting functional layer 1, so as to protect the light emitting unit 101 on the light emitting functional layer 1. In the embodiments of the present application, the first inorganic encapsulation layer 401 and the second inorganic encapsulation layer 403 can be formed by chemical vapor deposition, and the organic encapsulation layer 402 is formed by inkjet printing technology.

[0067] In some embodiments, the display panel 100 further comprises a touch functional layer 5, which is arranged between the light shielding layer 2 and the encapsulation layer 4, and is used to realize the touch function of the display screen. The touch functional layer 5 comprises a sensing area (not shown in the figure) and a wiring area 501, wherein the light shielding part 202 completely covers the wiring area 501, and the light shielding part 202 can cover the wiring of the touch functional layer 5, so as to avoid affecting the appearance.

[0068] In some embodiments, the color phase adjustment layer 301 is further provided with an optical transparent adhesive layer 6 on the side away from the encapsulation layer 4. The optical transparent adhesive layer 6 can protect the display panel 100, and can also be used to assemble other components (such as a cover plate) by virtue of its adhesion.

[0069] It can be understood that other components of the display panel 100 in the embodiments of the present application are not limited to the above examples, and are not specifically described one by one.

[0070] It should be noted that the light-emitting side of the display panel 100 provided in the embodiments of the present application is not provided with a polarizer, that is, the present application is applied to a PLP type display panel.

[0071] In some embodiments, the display panel 100 is an OLED panel, that is, the light-emitting unit 101 is an OLED device, but is not limited thereto.

[0072] Referring to Figure 4 The second aspect of the present application provides a display device 10, which comprises the protective layer 200 and the display panel 100 described above, and the protective layer is located on the side of the light filter layer 3 away from the light-emitting functional layer 1.

[0073] In some embodiments, the material of the protective layer is selected from glass or polyimide, but is not limited thereto.

[0074] In the embodiments of the present application, the display device can be a wearable device such as a smart bracelet, a smart watch, a virtual reality (VR), a mobile phone, an electronic book and an electronic newspaper, a television, a personal portable computer, a flexible OLED display and lighting device such as a foldable and rollable OLED, or any other product or component having a display function.

[0075] In the display panel 100 and the display device provided in the present application, the light filter layer 3 is arranged on the light-blocking layer 2 of the display panel 100, and the light filter layer 3 can selectively transmit red light, green light and blue light. At least part of the light rays that are incident from the outside to the inside of the display panel 100 and are reflected to the light-blocking layer 2 will be further filtered by the light filter layer 3, thereby effectively reducing the reflectivity of the ambient light and narrowing the spectrum of the reflected light, which is conducive to improving the color phase of the display area and the non-display area of the display panel 100 in the off-screen state, thereby improving the appearance taste.

[0076] In the description of the present application, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0077] In the above embodiments, the description of each embodiment is focused on, and the part not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0078] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0079] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment without departing from the technical solution content of the present application and in accordance with the technical essence of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a light-emitting functional layer comprising a plurality of light-emitting units arranged at intervals; a light-shielding layer provided on the light-emitting side of the light-emitting functional layer; the light-shielding layer comprises a plurality of openings corresponding to the plurality of light-emitting units one by one and a light-shielding portion between any two adjacent openings; and a light-filtering layer provided on the side of the light-shielding layer away from the light-emitting functional layer; wherein the light-filtering layer covers the light-shielding portion and the openings, and the light-filtering layer is configured to selectively transmit red light, blue light and green light.

2. The display panel of claim 1, wherein, The light-filtering layer comprises a color phase adjusting layer configured to selectively transmit red light, blue light and green light; the color phase adjusting layer is filled in the openings and extends to cover the light-shielding portion.

3. The display panel of claim 1, wherein, The light-filtering layer comprises a color phase adjusting layer and a color color resistance layer, and the color phase adjusting layer and the color color resistance layer are configured to selectively transmit red light, blue light and green light; The color color resistance layer is filled in the openings, and the color phase adjusting layer covers the color color resistance layer and the light-shielding portion.

4. The display panel of claim 2 or 3, wherein, The plurality of light-emitting units comprise red light-emitting units, blue light-emitting units and green light-emitting units; In the transmission spectrum of the color phase adjusting layer, there is a first wave peak in the blue light wavelength range and a second wave peak in the green light wavelength range; the difference between the position of the first wave peak and the spectral peak of the light emitted by the blue light-emitting unit is less than or equal to 20 nanometers, and the difference between the position of the second wave peak and the spectral peak of the light emitted by the green light-emitting unit is less than or equal to 20 nanometers; the light with the corresponding wavelength of the spectral peak of the light emitted by the red light-emitting unit has a transmittance of the color phase adjusting layer greater than or equal to 40%.

5. The display panel of claim 4, wherein, The color phase adjusting layer has the first wave peak in the wavelength range of 450 nanometers to 460 nanometers; and / or has the second wave peak in the wavelength range of 520 nanometers to 530 nanometers.

6. The display panel of claim 4, wherein, Define the wavelength corresponding to the first wave peak as N1, define the range between [N1-20, N1+20] as the first wave peak appearance range, and the transmittance of at least part of the light containing the N1 wavelength in the first wave peak appearance range through the color phase adjusting layer is 60% to 70%; Define the wavelength corresponding to the second wave peak as N2, define the range between [N2-20, N2+20] as the second wave peak appearance range, and the transmittance of at least part of the light containing the N2 wavelength in the second wave peak appearance range through the color phase adjusting layer is greater than or equal to 55%; Define the spectral peak of the light emitted by the red light-emitting unit as N3, and define the range [N3-20, 780] as the third wave peak appearance range, and the transmittance of at least part of the light containing the N3 wavelength in the third wave peak appearance range through the color phase adjusting layer is greater than or equal to 55%.

7. The display panel of claim 2 or 3, wherein, The thickness of the color phase adjusting layer ranges from 1 micrometer to 4 micrometers.

8. The display panel of claim 1, wherein, The material of the light-shielding layer is selected from black color resistance.

9. The display panel of claim 3, wherein, The color color resistance layer comprises red color resistance, green color resistance and blue color resistance; the light-shielding layer is stacked by at least two of the red color resistance, the green color resistance and the blue color resistance.

10. A display device, characterized by comprising: The display panel as claimed in any one of claims 1 to 9, comprising a protective layer on the side of the light filtering layer facing away from the light emitting functional layer.

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