An organic light-emitting display panel and a display device

Abstract

An embodiment of the present application provides an organic light-emitting display panel and a display device. The functional layers disposed on the first substrate in the organic light-emitting display panel include a light-emitting layer and a light-filtering layer. A pixel definition layer is disposed between adjacent organic light-emitting units in the light-emitting layer. Black light-blocking blocks and color-resist blocks in the light-filtering layer are alternately arranged, and the color-resist blocks are arranged in one-to-one correspondence with the organic light-emitting units. Along the thickness direction of the organic light-emitting display panel, the region between adjacent black light-blocking blocks covers the organic light-emitting units, and the pixel definition layer is a black light-absorbing layer. In the organic light-emitting display panel and the display device provided by the embodiment of the present application, the cooperation of the black light-blocking blocks and the color-resist blocks can reduce the visible light of the external environment entering the internal film layer of the organic light-emitting display panel and allow the light emitted by the organic light-emitting units to pass through. Therefore, the reflectivity of the organic light-emitting display panel to the external environment light is reduced and the brightness of the organic light-emitting display panel is not reduced.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and in particular, to an organic light-emitting display panel and a display device. Background Art

[0002] The application of organic light-emitting display screens in fields such as mobile communications and wearable products is increasing day by day, making the research on organic light-emitting display screens a hot topic. An organic light-emitting display screen includes electrode layers such as metal stacked thereon. Therefore, if the organic light-emitting display screen is directly exposed to ambient light, the strong reflection of the electrode layers such as metal to the ambient light will cause the contrast of the organic light-emitting display screen to decrease, and even lead to the inability to observe the display picture.

[0003] In the prior art, in order to solve the influence of light reflection on the contrast of the organic light-emitting display screen, a polarizer is provided on the light-emitting surface of the organic light-emitting display screen. Since the polarizer can absorb light in one polarization direction and only allow light in the other polarization direction to pass through, the polarizer can block part of the ambient light from entering the internal film layer of the organic light-emitting display screen, thereby achieving the effect of weakening the reflected light. However, the polarizer provided on the light-emitting surface of the organic light-emitting display screen not only absorbs the ambient light, but also absorbs the light emitted by the light-emitting devices in the organic light-emitting display screen for display, resulting in a decrease in the light extraction efficiency of the organic light-emitting display screen, and further leading to a decrease in the brightness of the organic light-emitting display screen or a decrease in the lifespan of the light-emitting devices in the organic light-emitting display screen. Summary of the Invention

[0004] The present application provides an organic light-emitting display panel and a display device to solve the above problems.

[0005] In a first aspect, the present application provides an organic light-emitting display panel, including a first substrate. A functional layer is disposed on the first substrate, and the functional layer includes a light-emitting layer and a light-filtering layer. The light-filtering layer is disposed on a side of the light-emitting layer close to the light-emitting surface of the organic light-emitting display panel; the light-emitting layer includes a plurality of organic light-emitting units and a pixel definition layer, and the pixel definition layer is disposed between adjacent organic light-emitting units; the light-filtering layer includes a plurality of color-resist blocks and a plurality of black light-shielding blocks, the black light-shielding blocks and the color-resist blocks are arranged alternately, and the color-resist blocks are disposed in one-to-one correspondence with the organic light-emitting units; wherein, along the thickness direction of the organic light-emitting display panel, the region between adjacent black light-shielding blocks covers the organic light-emitting units, and the pixel definition layer is a black light-absorbing layer. In the organic light-emitting display panel provided by the embodiment of the present application, the black light-shielding blocks are disposed above the organic light-emitting layer and the color-resist blocks are disposed above the organic light-emitting units, so the black light-shielding blocks and the color-resist blocks cooperate to only allow visible light in the external environment of a specific wavelength to enter the internal film layer of the organic light-emitting display panel, thereby reducing the visible light in the external environment entering the internal film layer of the organic light-emitting display panel, and further reducing the reflectance of the organic light-emitting display panel to the external environment light, and improving the contrast of the organic light-emitting display panel. At the same time, since the color-resist blocks are used to filter the external environment light, and the color-resist blocks can allow the light emitted by the corresponding organic light-emitting units to pass through, the brightness of the organic light-emitting display panel will not be reduced.

[0006] In one implementation of the first aspect, the pixel definition layer and the black light-shielding blocks are black light-absorbing layers that transmit infrared light. Setting the pixel definition layer and the black light-shielding blocks as black light-absorbing layers that transmit infrared light can prevent visible light in the external environment from transmitting into the organic light-emitting display panel to reduce the reflection of the organic light-emitting display panel to the external environment light, and at the same time allowing infrared light to pass through can ensure that the organic light-emitting display panel can emit or receive infrared light for optical image acquisition.

[0007] In one implementation of the first aspect, the organic light-emitting display panel further includes a driving circuit layer and a planarization layer, and the planarization layer is disposed between the driving circuit layer and the light-emitting layer; the driving circuit layer includes a plurality of transistor structures, and the planarization layer is a black light-absorbing layer. Setting the planarization layer as a black light-absorbing layer can further reduce the probability that visible light in the external environment enters the internal film layer of the organic light-emitting display panel and is reflected, and further improve the resolution of the organic light-emitting display panel.

[0008] In one implementation of the first aspect, the planarization layer is a black light-absorbing layer that transmits infrared light. Setting the planarization layer as a black light-absorbing layer that transmits infrared light can also ensure that infrared light can pass through the organic light-emitting display panel, and can ensure that the organic light-emitting display panel can perform optical image acquisition by emitting or receiving infrared light.

[0009] In an implementation of the first aspect, in the thickness direction of the organic light-emitting display panel, the pixel definition layer under the black light-shielding block is a discontinuous structure. When the pixel definition layer is not provided at least in part under the black light-shielding block, the transmittance of detection light, such as infrared light, will increase, thereby improving the accuracy of optical image acquisition. At the same time, since there is a black light-shielding block at least in part of this position, the incidence and reflection of external ambient light can still be effectively reduced.

[0010] In an implementation of the first aspect, in a plane perpendicular to the thickness direction of the organic light-emitting display panel, the minimum distance between the edge of the organic light-emitting unit and the edge of the corresponding adjacent black light-shielding block is a first distance, and the first distance is greater than 0.5 μm.

[0011] In an implementation of the first aspect, the plurality of organic light-emitting units include green organic light-emitting units, blue organic light-emitting units, and red organic light-emitting units; the first distance corresponding to the green organic light-emitting units is 3 μm, the first distance corresponding to the blue organic light-emitting units is 1.5 μm, and the first distance corresponding to the red organic light-emitting units is 5 μm. By reasonably matching the first distances corresponding to the green organic light-emitting units, blue organic light-emitting units, and red organic light-emitting units respectively, the brightness consistency of different color sub-pixels at the same viewing angle can be improved to avoid color deviation problems. At the same time, in the embodiments of the present application, since a black light-absorbing pixel definition layer is used, an appropriate increase in the first distance can still ensure that the reflectance of the organic light-emitting display panel to external ambient light is small.

[0012] In an implementation of the first aspect, the plurality of organic light-emitting units include green organic light-emitting units, blue organic light-emitting units, and red organic light-emitting units, and the plurality of color filter blocks include green color filter blocks, blue color filter blocks, and red color filter blocks; the green organic light-emitting units are correspondingly arranged with the green color filter blocks, the blue organic light-emitting units are correspondingly arranged with the blue color filter blocks, and the red organic light-emitting units are correspondingly arranged with the red color filter blocks; the full width at half maximum of the spectrum of the green color filter block is less than or equal to 70 nm, the full width at half maximum of the spectrum of the blue color filter block is greater than or equal to 60 nm and less than or equal to 100 nm, and the full width at half maximum corresponding to the short wavelength of the spectrum of the red color filter block is less than or equal to 25 nm. By narrowing the wavelength range of the light allowed to pass through the green color filter block and the red color filter block, the intensity of external ambient light reaching the anode in the light-emitting device through the green color filter block and the red color filter block is reduced, which can effectively reduce the reflection of the organic light-emitting display panel to external ambient light, and at the same time improve the chromaticity of the red light and green light emitted by the organic light-emitting display panel. By broadening the full width at half maximum of the blue color filter block, the transmittance of the blue color filter block can be increased, and the luminous brightness of the blue sub-pixels can be appropriately increased to improve its lifespan.

[0013] In an implementation of the first aspect, the organic light-emitting display panel further includes a packaging layer, a first planarization layer, a second planarization layer, and a coating planarization layer; the packaging layer is disposed between the light-emitting layer and the first planarization layer and includes a first inorganic insulating layer, an organic insulating layer, and a second inorganic insulating layer, the organic insulating layer is disposed between the first inorganic insulating layer and the second inorganic insulating layer, and the second inorganic insulating layer is disposed on the side of the organic insulating layer close to the first planarization layer; at least one of the color-resist block and the black light-shielding block is located between the first planarization layer and the second planarization layer, and the second planarization layer is disposed on the side of the first planarization layer close to the coating planarization layer; wherein, the refractive indices of the second inorganic insulating layer, the first planarization layer, the second planarization layer, and the coating planarization layer decrease in sequence. By matching the refractive indices of the filter layer, the packaging layer, and the coating planarization layer, the reflectance of the organic light-emitting display panel to external ambient light can be reduced, and the light extraction efficiency of the display light of the organic light-emitting display panel can be improved.

[0014] In an implementation of the first aspect, the refractive index of the second inorganic insulating layer is 1.8, the refractive index of the first planarization layer is 1.62, the refractive index of the second planarization layer is 1.55, and the refractive index of the coating planarization layer is 1.52. After matching the refractive index of the filter layer with the refractive indices of the packaging layer and the coating planarization layer using the above refractive index values, the contribution of the filter layer to the reflectance of the organic light-emitting display panel to external ambient light is reduced to about 0.2%, thereby further reducing the reflection of the organic light-emitting display panel to external ambient light.

[0015] In a second aspect, the present application provides a display device, including the organic light-emitting display panel provided in the first aspect. In the display device provided in the embodiments of the present application, the black light-shielding block is disposed above the organic light-emitting layer and the color-resist block is disposed above the organic light-emitting unit, then the black light-shielding block and the color-resist block cooperate to only allow visible light of a specific wavelength in the external environment to enter the internal film layer of the organic light-emitting display panel, that is, the visible light in the external environment entering the internal film layer of the organic light-emitting display panel is reduced, thereby reducing the reflectance of the organic light-emitting display panel to external ambient light and improving the contrast of the display device. At the same time, since the color-resist block is used to filter external ambient light and the color-resist block can allow the light emitted by the corresponding organic light-emitting unit to pass through, the brightness of the display device is not reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an organic light-emitting display panel provided in an embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of light reflection of an organic light-emitting display panel provided in an embodiment of the present application;

[0018] Figure 3Schematic diagram of another organic light-emitting display panel provided by an embodiment of the present application;

[0019] Figure 4 Schematic diagram of yet another organic light-emitting display panel provided by an embodiment of the present application;

[0020] Figure 5 Schematic diagram of the relationship between the outward expansion distance of the region between adjacent black light-shielding blocks and the reflectivity of the organic light-emitting display panel;

[0021] Figure 6 Planar schematic diagram of an organic light-emitting unit and a light-filtering unit in an embodiment of the present application;

[0022] Figure 7 For using Figure 6 Schematic diagram of the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown;

[0023] Figure 8 For using Figure 6 Schematic diagram of the relationship between another viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown;

[0024] Figure 9 Another planar schematic diagram of a color-resist block between an organic light-emitting unit and an adjacent black light-shielding block in an embodiment of the present application;

[0025] Figure 10 For using Figure 9 Schematic diagram of the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown;

[0026] Figure 11 Yet another planar schematic diagram of a color-resist block between an organic light-emitting unit and an adjacent black light-shielding block in an embodiment of the present application;

[0027] Figure 12 For Figure 11 Schematic diagram of the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown;

[0028] Figure 13 Another planar schematic diagram of a color-resist block between an organic light-emitting unit and an adjacent black light-shielding block in an embodiment of the present application;

[0029] Figure 14 For Figure 13 Schematic diagram of the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown;

[0030] Figure 15 Schematic diagram of yet another organic light-emitting display panel provided by an embodiment of the present application;

[0031] Figure 16 A spectrogram of a color resist block and an organic light-emitting unit provided by an embodiment of the present application;

[0032] Figure 17 A schematic diagram of a display device provided by an embodiment of the present application. Detailed implementation manners

[0033] The terms used in the implementation manners part of the present application are only used to explain the specific embodiments of the present application, rather than aiming to limit the present application.

[0034] An embodiment of the present application provides an organic light-emitting display panel and a display device.

[0035] Figure 1 A schematic diagram of an organic light-emitting display panel provided by an embodiment of the present application. As Figure 1 shown, the organic light-emitting display panel provided by the embodiment of the present application includes a first substrate 01 and a second substrate 09. The first substrate 01 and the second substrate 09 are disposed opposite to each other. Among them, a functional layer is disposed on a side of the first substrate 01 facing the second substrate 09, and a surface coating and flattening layer 08 is disposed between the functional layer and the second substrate 09. The first substrate 01 is used to carry the functional layer, and the second substrate 09 is used to encapsulate and protect the functional layer.

[0036] The functional layer disposed on the first substrate 01 includes a driving circuit layer 03, a light-emitting layer 05, and a light-filtering layer 07. Along the direction from the first substrate 01 to the second substrate 09, the driving circuit layer 03, the light-emitting layer 05, and the light-filtering layer 07 are sequentially disposed.

[0037] Among them, the light-emitting layer 05 includes a plurality of light-emitting devices. The plurality of light-emitting devices correspond to sub-pixels in the organic light-emitting display panel one by one, and the light-emitting devices may specifically be organic light-emitting devices for performing light-emitting display. The driving circuit layer 03 includes a plurality of transistor structures 31. At least two transistor structures 31 may constitute a pixel driving circuit. At least one transistor structure 31 in the pixel driving circuit is electrically connected to the light-emitting device. The pixel driving circuit may provide the voltage or current required for the light-emitting device in the light-emitting layer 05 to emit light. The light-filtering layer 07 may be used to filter the light emitted by the light-emitting devices in the light-emitting layer 05 to achieve color display, and at the same time block the light between adjacent sub-pixels to avoid light crosstalk between different sub-pixels.

[0038] In addition, a buffer layer 02 may be included between the driving circuit layer 03 and the first substrate 01. The buffer layer 02 can protect the semiconductor layer in the transistor structure 31 from external moisture, oxygen, etc. A planarization layer 04 may be provided between the light-emitting layer 05 and the driving circuit layer 03. The planarization layer 04 covers the driving circuit layer 03 and provides a flat surface for the preparation of the light-emitting layer 05. A packaging layer 06 may be provided between the light-filtering layer 07 and the light-emitting layer 05. The packaging layer 06 can protect the organic light-emitting materials in the light-emitting layer 05 from moisture, oxygen, etc. Specifically, the packaging layer 06 may include a first inorganic insulating layer 61, an organic insulating layer 62, and a second inorganic insulating layer 63 that are sequentially stacked along the thickness direction of the organic light-emitting display panel.

[0039] In the embodiment of the present application, both the light-filtering layer 07 and the light-emitting layer 05 are provided on the first substrate 01. After the light of different colors emitted by different light-emitting devices passes through the light-filtering layer 07, the purity of the light of different colors can be improved. In addition, when external ambient light is to enter the light-emitting layer 05 and the driving circuit layer 03 containing more conductive layers such as metal, it also needs to pass through the light-filtering layer 07. On the one hand, the light-filtering layer 07 can block the visible light of the external environment from entering the area between adjacent sub-pixels. On the other hand, the light-filtering layer 07 can only allow external ambient light of a specific wavelength to enter the area where the sub-pixels are located, so that the light entering the organic light-emitting display panel is reduced, and thus the reflection of the display panel to the external ambient light is reduced.

[0040] The aperture ratio of a small-size top-emitting organic light-emitting display panel is small, about 15% - 20%. In order to reduce the visible light of the external environment entering the organic light-emitting display panel without weakening the display light emitted by the light-emitting device, in the embodiment of the present application, the organic light-emitting display panel uses the light-filtering layer 07 to replace the polarizer in the prior art to block the external ambient light of some wavelengths from entering the inside of the organic light-emitting display panel. Using the light-filtering layer 07 to replace the polarizer can avoid the problem of the light-emitting brightness reduction of the organic light-emitting display panel caused by using the polarizer, and at the same time can reduce the external ambient light entering the organic light-emitting display panel and being reflected by the organic light-emitting display panel.

[0041] Please continue to refer to Figure 1 , along the thickness direction of the organic light-emitting display panel, the light-emitting layer 05 specifically includes an organic light-emitting layer 51, a first electrode layer 52, a second electrode layer 53, and a pixel definition layer 54.

[0042] Among them, the organic light-emitting layer 51 includes a plurality of organic light-emitting units, which are composed of organic light-emitting materials. Different organic light-emitting units correspond to different sub-pixels, and the film layer for light emission in the light-emitting device is specifically the organic light-emitting unit. The plurality of organic light-emitting units include green organic light-emitting units 51a, blue organic light-emitting units 51b, and red organic light-emitting units 51c. The organic light-emitting units with different light-emitting colors are composed of different organic light-emitting materials and can emit different colors of light.

[0043] In one implementation manner of the present application, the first electrode layer 52 can be made of a metal material and is disposed on the side of the organic light-emitting layer 51 close to the first substrate 01. The first electrode layer 52 includes a plurality of electrically insulated anodes, and different organic light-emitting units correspond to different anodes. The second electrode layer 53 can be made of a transparent conductive material and is disposed on the side of the organic light-emitting layer 51 close to the second substrate 02. The second electrode layer 53 includes a cathode, and the cathodes of different sub-pixels can be electrically connected to each other to form a front structure. In a sub-pixel, along the thickness direction of the organic light-emitting display panel, the light-emitting device includes an anode, an organic light-emitting unit, and a cathode stacked, and the pixel driving circuit can be specifically electrically connected to the anode, and the anodes in the light-emitting devices corresponding to different sub-pixels are electrically insulated.

[0044] Please continue to refer to Figure 1 , a pixel definition layer 54 is disposed between adjacent organic light-emitting units. As Figure 1 shown, a pixel definition layer 54 is included between the adjacent green organic light-emitting unit 51a and blue organic light-emitting unit 51b, and a pixel definition layer 54 is also included between the adjacent blue organic light-emitting unit 51b and red organic light-emitting unit 51c.

[0045] Please continue to refer to Figure 1 , the color filter layer 07 includes a plurality of color resist blocks 71 and a light-shielding black matrix. The light-shielding black matrix includes a plurality of black light-shielding blocks 72, and can selectively filter light with different wavelengths passing through the color filter layer 07. Among them, except for the positions of the through holes penetrating the color filter layer 07, the black light-shielding blocks 72 and the color resist blocks 71 are alternately arranged within the color filter layer 07.

[0046] The regions between adjacent black light-shielding blocks 72 are arranged in one-to-one correspondence with the plurality of sub-pixels of the organic light-emitting display panel, and the regions between adjacent black light-shielding blocks 72 correspond to the sub-pixel regions of the organic light-emitting display panel. The black light-shielding blocks 72 of the light-shielding black matrix can prevent visible light from passing through, and thus can avoid light crosstalk between adjacent sub-pixels.

[0047] The color resist blocks 71 are arranged in one-to-one correspondence with the organic light-emitting units. Among them, the color resist blocks 71 are arranged on the side of the corresponding organic light-emitting unit close to the light-emitting surface of the organic light-emitting display panel. Different sub-pixels correspond to different color resist blocks 71. In one sub-pixel, the organic light-emitting unit therein can emit light by itself, and the light emitted by it passes through the corresponding color resist block 71 and then exits.

[0048] The multiple color resist blocks 71 include a green color resist block 71a arranged corresponding to the green organic light-emitting unit 51a, a blue color resist block 71b arranged corresponding to the blue organic light-emitting unit 51b, and a red color resist block 71c arranged corresponding to the red organic light-emitting unit 51c. Then, the green color resist block 71a can filter the green light emitted by the light-emitting device corresponding to the green organic light-emitting unit 51a, so that the green light emitted by the green sub-pixel has a purer chromaticity. The blue color resist block 71b can filter the blue light emitted by the light-emitting device corresponding to the blue organic light-emitting unit 51b, so that the blue light emitted by the blue sub-pixel has a purer chromaticity. The red color resist block 71c can filter the red light emitted by the light-emitting device corresponding to the red organic light-emitting unit 51c, so that the red light emitted by the red sub-pixel has a purer chromaticity.

[0049] Figure 2 This is a schematic diagram of light reflection of an organic light-emitting display panel provided by an embodiment of the present application. When a light filtering layer 07 is used to replace a polarizer in the organic light-emitting display panel to reduce the visible light entering the organic light-emitting display panel and further reduce the reflection of the organic light-emitting display panel to ambient light, the reflectivity of the organic light-emitting display panel to ambient light can reach a level less than or equal to 6%. Specifically, as Figure 2 shown, the interface reflectivity between the air and the second substrate 09 is the first reflectivity R1, and R1 is about 4%. The interface reflectivity between the light filtering layer 07 and the coating flat layer 08 is the second reflectivity R2, and R2 is about 0.3%. The reflectivity of the light-emitting device is the third reflectivity R3, and R3 is about 1.5%. It should be noted that the third reflectivity R3 is mainly contributed by the anode made of a metal material in the light-emitting device; and the metal conductive structure of the transistor structure 31 in the driving circuit layer 03 and the metal trace electrically connected to the transistor structure 31 are usually arranged under the shielding portion 721 of the black matrix layer 72 with a high enough light density, so they basically do not reflect ambient light.

[0050] Due to process precision limitations, there will be dimensional deviations in the black light-blocking blocks 72, color-resist blocks 71 during the design and manufacturing processes, resulting in alignment deviations in the areas between adjacent black light-blocking blocks 72 and between the color-resist blocks 71 and the corresponding organic light-emitting units 51a / 51b / 51c. When the sizes of the areas between adjacent black light-blocking blocks 72 and the color-resist blocks 71a / 71b / 71c are comparable to those of the corresponding organic light-emitting units 51a / 51b / 51c during the design stage, during the manufacturing process, there is a risk that the edges of the black light-blocking blocks 72 and the edges of the color-resist blocks 71a / 71b / 71c will shrink relative to the edges of the organic light-emitting units 51a / 51b / 51c. Although the third reflectance R3 can be reduced, the aperture ratio of the organic light-emitting display panel will be decreased, thereby reducing the display brightness or increasing power consumption and shortening the service life of the organic light-emitting units. Therefore, to ensure the aperture ratio, the sizes of the areas between the black light-blocking blocks 72 and the color-resist blocks 71a / 71b / 71c can be designed to be larger than those of the organic light-emitting units 51a / 51b / 51c.

[0051] In the embodiment of the present application, the pixel definition layer 54 is a black light-absorbing layer, that is, the pixel definition layer 54 is made of a material that absorbs visible light. In the embodiment of the present application, the light-reflection phenomenon caused by external ambient light entering the organic light-emitting display panel can be alleviated by using the light-filtering layer 07. However, since the black light-blocking blocks 72 can only block the external ambient light above them from entering, there is still external ambient light passing through the light-filtering layer 07 in the areas of the organic light-emitting display panel other than the black light-blocking blocks 72. By providing the black light-absorbing pixel definition layer 54, the external ambient light entering the internal film layer of the organic light-emitting display panel and being reflected is further reduced.

[0052] Please continue to refer to Figure 1, in a sub-pixel, the area between adjacent black light-shielding blocks 72 and the area of the color-resist blocks 71 are actually larger than the area of the organic light-emitting units 51a / 51b / 51c. Since the light emitted by the organic light-emitting units 51a / 51b / 51c has a certain angle and in order to ensure the aperture ratio of the organic light-emitting display panel, the area of the sub-pixel, that is, the area between adjacent black light-shielding blocks 72 and the area of the color-resist blocks 71a / 71b / 71c, is larger than the area of its corresponding organic light-emitting units 51a / 51b / 51c. Then, along the thickness direction of the organic light-emitting display panel, the area between adjacent black light-shielding blocks 72 covers the corresponding organic light-emitting units 51a / 51b / 51c. Since the area of the color-resist blocks 71a / 71b / 71c is larger than the area of its corresponding organic light-emitting units 51a / 51b / 51c, and there is still visible light with a specific wavelength passing through after being filtered by the color-resist blocks 71a / 71b / 71c, then along the thickness direction of the organic light-emitting display panel, for the light-emitting layer 05 and the pixel definition layer 54 disposed below the color-resist blocks 71a / 71b / 71c, except for the light-emitting devices, the pixel definition layer 54 with black light absorption is provided in other areas. Then the pixel definition layer 54 can block the external ambient light passing through the color-resist blocks 71a / 71b / 71c from entering other film layers below the pixel definition layer 54, reducing the light reflection of other film layers.

[0053] As Figure 1 shown, the areas of the anode included in the first electrode layer 52 and the cathode included in the second electrode layer 53 are both larger than the area of the organic light-emitting units 51a / 51b / 51c located therebetween, so as to maximize the light-emitting area of the organic light-emitting units. Then, in addition to the part disposed below the organic light-emitting units 51a / 51b / 51c, the anode made of metal also includes a part disposed outside the area where the organic light-emitting units 51a / 51b / 51c are located. The pixel definition layer 54 also covers the part of the anode disposed outside the area where the organic light-emitting units 51a / 51b / 51c are located, then it can prevent the external ambient light transmitted through the color-resist blocks 71a / 71b / 71c from entering the anode outside the area where the organic light-emitting units 51a / 51b / 51c are located, thereby reducing the light reflection of the anode. That is, the embodiment of the present application can reduce the light reflectance of the organic light-emitting display panel to the external ambient light by reducing the third reflectance R3.

[0054] Figure 3 is a schematic diagram of another organic light-emitting display panel provided by the embodiment of the present application, Figure 4 is a schematic diagram of yet another organic light-emitting display panel provided by the embodiment of the present application.

[0055] Figure 3 The organic light-emitting display panel shown and Figure 1 and Figure 2The organic light-emitting display panel shown is different in that Figure 1 compared with Figure 2 the color-resist blocks 71 in the organic light-emitting display panel shown are filled between adjacent black light-shielding blocks 72, Figure 3 the organic light-emitting display panel shown further includes a first planarization layer 73 and a second planarization layer 74. Among them, as Figure 3 shown, along the thickness direction of the organic light-emitting display panel, the first planarization layer 73 is disposed on the side of the filter layer 07 close to the encapsulation layer 06, and the second planarization layer 74 is disposed between the color-resist blocks 71 and the black light-shielding blocks 72. Then, the alternating arrangement of the black light-shielding blocks 72 and the color-resist blocks 71 specifically means that the projections of multiple black light-shielding blocks 72 along the thickness direction of the organic light-emitting display panel and the projections of multiple color-resist blocks 71 along the thickness direction of the organic light-emitting display panel are alternately arranged one by one. In the embodiment of the present application, the filter layer 07 is disposed between the encapsulation layer 06 and the coating planarization layer 08, and the reflectivity of the organic light-emitting display panel to external ambient light can be reduced and the light extraction efficiency of the display light of the organic light-emitting display panel can be improved by matching the refractive indices of the filter layer 07, the encapsulation layer 06, and the coating planarization layer 08.

[0056] Specifically, the one in the encapsulation layer 06 close to the filter layer 07 is the second inorganic insulating layer 63. Then, in the direction from the light-emitting layer 05 in the organic light-emitting display panel to its light-emitting surface, the second inorganic insulating layer 63, the first planarization layer 73, the second planarization layer 74, and the coating planarization layer 08 are sequentially disposed and their refractive indices decrease in turn. Specifically, the refractive index of the second inorganic insulating layer 63 can be about 1.8, the refractive index of the first planarization layer 73 can be about 1.62, the refractive index of the second planarization layer 74 can be about 1.55, and the refractive index of the coating planarization layer 08 can be about 1.52. In addition, the refractive index of the second substrate 09 can be about 1.52.

[0057] It should be noted that the refractive indices of the second inorganic insulating layer 63, the first planarization layer 73, the second planarization layer 74, the coating planarization layer 08, and the second substrate 09 in the embodiment of the present application can be close to the above refractive index values, and there can be specific small deviations. For example, the refractive index of the first planarization layer 73 can be 1.62 ± 0.05, and the refractive index of the second planarization layer 74 can be 1.55 ± 0.05.

[0058] In addition, the main function of the color-resist blocks 71 in the filter layer 07 is to filter the light passing through them. Therefore, the materials included therein are relatively fixed. The refractive index of the green color-resist block 71a is about 1.61, the refractive index of the blue color-resist block 71b is about 1.54, and the refractive index of the red color-resist block 71c is about 1.67. In addition, the refractive index of the black light-shielding block 72 can be set to 1.52 ± 0.03.

[0059] The inventor has obtained through experiments that in the organic light-emitting display panel provided in the embodiment of the present application, when the refractive index of the filter layer 07 is not matched with the refractive indices of the encapsulation layer 06 and the coating flat layer 08, the change in the refractive index at the position of the filter layer 07 can bring a contribution of about 0.5% to the external ambient light reflectivity of the organic light-emitting display panel. After matching the refractive index of the filter layer 07 with the refractive indices of the encapsulation layer 06 and the coating flat layer 08 using the above refractive index values, the contribution of the filter layer 07 to the external ambient light reflectivity of the organic light-emitting display panel is reduced to about 0.2%, thereby further reducing the reflection of the organic light-emitting display panel to the external ambient light.

[0060] In another implementation manner of this embodiment, as Figure 4 shown, the second flat layer 74 can also be disposed on the side of the filter layer 07 close to the coating flat layer 08, that is, the color-resist block 71 and the black light-shielding block 72 are disposed between the first flat layer 73 and the second flat layer 74.

[0061] Please continue to refer to Figure 3 and Figure 4 , in an embodiment of the present application, the second flat layer 74 can have a haze of 1% to 3%. The second flat layer 74 can be made to have a certain haze by doping particles in the second flat layer 74. Specifically, the thickness of the second flat layer 74 is 2 μm to 3 μm, and the doping particles can specifically be inorganic small particles, polymer microspheres, polymer microspheres obtained by photopolymerization, etc., and their size is 500 nm to 800 nm. By setting the haze of the second flat layer 74 to 1% to 3%, the diffraction phenomenon caused by the reflection of the organic light-emitting display panel to the external ambient light can be eliminated, thereby avoiding the appearance of light spots on the organic light-emitting display panel during display, which affects the visual appearance and clarity.

[0062] Figure 5 is a schematic diagram of the relationship between the outward expansion distance of the region between adjacent black light-shielding blocks and the reflectivity of the organic light-emitting display panel. In Figure 5 , the outward expansion distance of the region between adjacent black light-shielding blocks shown on the abscissa is the distance by which the region between adjacent black light-shielding blocks 72 expands relative to the corresponding organic light-emitting units 51a / 51b / 51c, that is, the distance by which the part of the color-resist block 71 located between adjacent black light-shielding blocks 72 expands relative to the corresponding organic light-emitting unit; the reflectivity shown on the ordinate is the reflectivity of the organic light-emitting display panel to the external ambient light. From Figure 5It can be seen that when the black light-absorbing pixel definition layer 54 in the organic light-emitting display panel provided in the embodiment of the present application is replaced with a conventional pixel definition layer, compared with the organic light-emitting display panel using the pixel definition layer 54 with an optical density of 30%, the problem of increased reflectivity of the organic light-emitting display panel caused by the increased outward expansion distance of the area between adjacent black light-shielding blocks is obvious. That is, when the filter layer 07 is disposed on the first substrate 01 and the area of the portion where the medium color-resist block 71 is located between adjacent black light-shielding blocks 72 is larger than the area of the corresponding organic light-emitting unit 51a / 51b / 51c, using the black light-absorbing pixel definition layer 54 in the organic light-emitting display panel can significantly reduce the reflection of the organic light-emitting display panel to external ambient light.

[0063] In addition, from Figure 5 It can also be seen that when the reflectivity to external ambient light is the same, for the organic light-emitting display panel using the pixel definition layer 54 of the present application compared with the organic light-emitting display panel using a conventional pixel definition layer, the outward expansion distance of the area between adjacent black light-shielding blocks 72 can be set larger. Then when the reflectivity of the organic light-emitting display panel to external ambient light is within a certain range, the adjustable space of the area between adjacent black light-shielding blocks 72 in the organic light-emitting display panel provided in the embodiment of the present application increases, providing more operable space for adjusting the matching shape of different color sub-pixels by the shape of the area between adjacent black light-shielding blocks 72 and the color-resist block 71 located between adjacent black light-shielding blocks 72, thereby improving the color deviation problem.

[0064] Figure 6 This is a schematic plan view of the color-resist block between the organic light-emitting unit and the adjacent black light-shielding block in the embodiment of the present application. In the plane perpendicular to the thickness direction of the organic light-emitting display panel, the minimum distance between the edge of the organic light-emitting unit 51a / 51b / 51c and the edge of the corresponding area between adjacent black light-shielding blocks 72 is the first distance d. Then as Figure 6 shown, the distance between the edge of the portion of the color-resist block 71a / 71b / 71c located between adjacent black light-shielding blocks 72 and the edge of the corresponding organic light-emitting unit 51a / 51b / 51c is the first distance d, and d > 0.5 μm. By expanding the portion of the color-resist block 71a / 71b / 71c located between adjacent black light-shielding blocks 72 by more than 0.5 μm relative to the corresponding organic light-emitting unit 51a / 51b / 51c, the light transmittance of the organic light-emitting display panel can be increased; at the same time, using the black light-absorbing pixel definition layer 54 in the present application avoids the problem of increased reflectivity of the anode to external light caused by the outward expansion of the area between adjacent black light-shielding blocks 72.

[0065] Figure 7 For using Figure 6Schematic diagram of the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown Figure 8 for use with Figure 6 Another schematic diagram of the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown Figure 7 In Figure 8 , the viewing angle shown on the abscissa refers to different viewing angles at which a human eye views the organic light-emitting display panel, and the brightness shown on the ordinate is the emission brightness of the organic light-emitting display panel

[0066] Among them Figure 7 The tested organic light-emitting display panel is an organic light-emitting display panel that uses a conventional pixel definition layer and the region between adjacent black light-blocking blocks 72 corresponding to each sub-pixel is expanded by 3 μm, that is, the first distance d corresponding to the region between adjacent black light-blocking blocks 72 is 3 μm Figure 8 The tested organic light-emitting display panel is an organic light-emitting display panel that uses the black light-absorbing pixel definition layer 54 of the present application and the region between adjacent black light-blocking blocks 72 corresponding to each sub-pixel is expanded by 3 μm, that is, the first distance d corresponding to the region between adjacent black light-blocking blocks 72 is 3 μm. When using a conventional pixel definition layer Figure 7 It can be seen that as the viewing angle increases, the brightness of the red sub-pixels decreases significantly, which will cause the problem of large viewing angle color shift. After using the black light-absorbing pixel definition layer 54 Figure 8 Relative to Figure 7 , the decrease in the brightness of the red sub-pixels as the viewing angle increases tends to be close to that of other color sub-pixels. Therefore, the problem of color shift can be improved

[0067] Figure 9 Another plan view of the color-resist block between the organic light-emitting unit and the adjacent black light-blocking block in the embodiment of the present application Figure 10 for use with Figure 9 A schematic diagram of the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown Figure 9 The difference between the embodiment shown Figure 6 and the embodiment shown is that the part of the color-resist block 71 located between adjacent black light-blocking blocks 72 adopts a rounded-corner design, that is, the region between adjacent black light-blocking blocks 72 is a rounded-corner design

[0068] From Figure 10 It can be seen that when the organic light-emitting display panel adopts a color-resist block 71 with a rounded-corner design, that is, the region between adjacent black light-blocking blocks 72 with a rounded-corner design, the tested organic light-emitting display panel still uses the black light-absorbing pixel definition layer 54 of the present application and the region between adjacent black light-blocking blocks 72 corresponding to each sub-pixel is expanded by 3 μm. Each color sub-pixel has substantially the same brightness at a large viewing angle. Therefore, the color shift problem of the display panel can be significantly improved

[0069] Figure 11 This is another plan view of the color resistance block between the organic light-emitting unit and the adjacent black light-shielding block in the embodiment of the present application. Figure 12 For Figure 11 a schematic diagram showing the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown. Figure 13 This is yet another plan view of the color resistance block between the organic light-emitting unit and the adjacent black light-shielding block in the embodiment of the present application. Figure 14 For Figure 13 a schematic diagram showing the relationship between a viewing angle and brightness of an organic light-emitting display panel with the sub-pixel arrangement shown.

[0070] Please refer to Figure 11 and Figure 13 As shown, the specific value of the first distance d between the part of the green color resistance block 71a adjacent to the black light-shielding block 72 and the corresponding green organic light-emitting unit 51a is d1, the specific value of the first distance d between the part of the blue color resistance block 71b adjacent to the black light-shielding block 72 and the corresponding blue organic light-emitting unit 51b is d2, and the specific value of the first distance d between the part of the red color resistance block 71c adjacent to the black light-shielding block 72 and the corresponding red organic light-emitting unit 51c is d3. d1, d2, and d3 can be designed to be different, specifically d1 < d2 < d3.

[0071] Among them, Figure 11 the tested organic light-emitting display panel uses the black light-absorbing pixel definition layer 54 of the present application, and the part of the color resistance block 71 between the adjacent black light-shielding blocks 72 corresponding to each sub-pixel extends 3 μm outward relative to the corresponding organic light-emitting unit, that is, d1 = d2 = d3 = 3 μm. Figure 13 Different from Figure 11 the tested organic light-emitting display panel, the part of the color resistance block 71 between the adjacent black light-shielding blocks 72 adopts a rounded corner design, the part of the color resistance block 71 between the adjacent black light-shielding blocks 72 extends a greater distance outward relative to the corresponding organic light-emitting unit, and the parts of the color resistance blocks 71 between the adjacent black light-shielding blocks 72 corresponding to different color sub-pixels extend different distances outward relative to the corresponding organic light-emitting units. Specifically, d1 = 3 μm, d2 = 1.5 μm, and d3 = 5 μm.

[0072] Taking Figure 14 and Figure 12It can be seen by comparison that when the color resistance block 71 between adjacent black light-shielding blocks 72 has a larger outward expansion distance relative to the corresponding organic light-emitting unit, the brightness of the organic light-emitting display panel at the same viewing angle is higher; and reasonable matching of d1, d2, and d3 such that d1 < d2 < d3 can improve the brightness consistency of different color sub-pixels at the same viewing angle and avoid color deviation problems; in addition, due to the setting of the black light-absorbing pixel definition layer 54, even when d1 = 3 μm and d3 = 5 μm, that is, when the color resistance block 71 between adjacent black light-shielding blocks 72 has a relatively large outward expansion distance relative to the corresponding organic light-emitting unit, the reflectivity of the display panel to external ambient light will not increase.

[0073] It should be noted that d1, d2, and d3 in the embodiments of the present application can be close to the above refractive index values, and specifically there can be a small deviation. For example, d1 is 2 μm to 4 μm, d2 is 0.5 μm to 2.5 μm, and d3 is 3.5 μm to 6.5 μm.

[0074] Combined with Figure 5 and Figure 14 It can be seen that by optimizing the shape of the color resistance block 71 between adjacent black light-shielding blocks 72, that is, optimizing the shape of the area between adjacent black light-shielding blocks 72, when ensuring that the reflectivity of the organic light-emitting display panel to external ambient light is less than 6% and the large viewing angle color deviation is small, the first distance d can satisfy: d ≥ 5 μm, thereby significantly increasing the brightness of the organic light-emitting display panel.

[0075] It should be noted that in the embodiments of the present application, the shape of the sub-pixel can not only be Figure 11 and Figure 13 the rhombus shown, but also any one of a hexagon, a circle, a rectangle, and an octagon. That is, the shape of the area between adjacent black light-shielding blocks 72 and the color resistance block 71 provided therein can be any one of a rhombus, a hexagon, a circle, a rectangle, and an octagon.

[0076] In an embodiment of the present application, the display panel provided by the present application can not only perform light-emitting display, but also perform biometric image collection, such as collecting fingerprint information, iris information, face information, etc. When the display panel realizes biometric image collection through an optical sensor, the detection light should be able to pass through the display panel and then the optical sensor can emit and receive the detection light.

[0077] In an embodiment of the present application, in order to ensure the transmittance of the detection light, the black light-blocking block 72 and the black light-absorbing pixel definition layer 54 can be film layers that transmit the detection light, that is, the black light-blocking block 72 and the pixel definition layer 54 have a high absorption rate for visible light and a high transmittance for the detection light. In the embodiment of the present application, if the detection light is infrared light, then both the black light-blocking block 72 and the black light-absorbing pixel definition layer 54 should be film layers that transmit infrared light.

[0078] Figure 15 Schematic diagram of another organic light-emitting display panel provided for the implementation of the present application, as Figure 15 shown, along the thickness direction of the organic light-emitting display panel, the pixel definition layer 54 below the black light-blocking block 72 is a discontinuous structure. That is, at least some positions under the black light-blocking block 72 may not be provided with the substantial structure of the pixel definition layer 54. Then, in the positions where the black light-blocking block 72 is provided and the pixel definition layer 54 is not provided, the black light-blocking block 72 can reduce the entry of visible light from the environment into the internal film layer of the organic light-emitting display panel, and the positions where the black pixel definition layer 54 is not provided can increase the transmittance of the detection light, thereby improving the transmittance of the detection light of the organic light-emitting display panel; that is, increasing the transmittance of the detection light on the premise of ensuring a low reflectance of external ambient light.

[0079] In an embodiment of the present application, the planarization layer 04 can also be a black light-absorbing layer, so that the planarization layer 04 can prevent ambient light from entering the driving circuit layer 03, and thus can reduce the risk of the metal signal lines in the driving circuit layer 03 generating more reflections on the external ambient light.

[0080] In addition, when the display panel realizes biometric image acquisition through an optical sensor, the planarization layer 04 should also allow the detection light to pass through. In the embodiment of the present application, when the detection light is infrared light, the planarization layer 04 should be a black light-absorbing layer that transmits infrared light.

[0081] Figure 16 Spectral diagram of a color-resist block and an organic light-emitting unit provided for the embodiment of the present application, where the ordinate represents the transmittance of the color-resist block 71, and the abscissa represents the wavelengths corresponding to different colors of light.

[0082] In an implementation manner of the embodiment of the present application, the dye components, ratios, and concentrations in the color-resist blocks 71 of different colors can be adjusted to make the spectral peak of the color-resist block 71 match the spectral peak of the corresponding organic light-emitting unit, so as to improve and match the light extraction efficiency of various colors of light.

[0083] As Figure 16 shown, the full width at half maximum of the spectrum of the green color-resist block 71a is set to be less than or equal to 70 nm, and the full width at half maximum corresponding to the short wavelength of the spectrum of the red color-resist block 71c is set to be less than or equal to 25 nm, that is Figure 16The full width at half maximum (FWHM) corresponding to the left half of the spectrum of the red color filter block 71c is set to be less than or equal to 25 nm. Moreover, the peak of the spectrum of the green color filter block 71a matches the peak of the spectrum of the green organic light-emitting unit 51a, and the peak of the spectrum of the red color filter block 71c matches the peak of the spectrum of the red organic light-emitting unit 51c. Then, the wavelength ranges of the green light and the red light respectively allowed to pass through the green color filter block 71a and the red color filter block 71c are narrowed, the intensity of the external ambient light passing through the green color filter block 71a and the red color filter block 71c and reaching the anode in the light-emitting device is reduced, and the light of the external ambient light reflected by the anode in the light-emitting device and emitted to the light-emitting surface of the organic light-emitting display panel is relatively reduced, which can effectively reduce the reflection of the organic light-emitting display panel to the external ambient light.

[0084] Moreover, as Figure 16 shown, the full width at half maximum of the spectrum of the blue color filter block 71b is set to be greater than or equal to 60 nm and less than or equal to 100 nm, and the peak of the spectrum of the blue color filter block 71b matches the peak of the spectrum of the blue organic light-emitting unit 51b. By broadening the full width at half maximum of the blue color filter block 71b, the transmittance of the blue color filter block 71b can be increased, and the luminous brightness of the blue sub-pixel can be appropriately increased to improve its lifespan.

[0085] In addition, by narrowing the full width at half maximum of the spectrum of the green color filter block 71a to be less than or equal to 70 nm, narrowing the full width at half maximum of the left half of the spectrum of the red color filter block 71c to be less than or equal to 25 nm, broadening the full width at half maximum of the spectrum of the blue color filter block 71b to be greater than or equal to 60 nm and less than or equal to 100 nm, and making the peaks of the spectra of the color filter blocks 71 of different colors match the peaks of the spectra of the corresponding organic light-emitting units, when the thickness of the color filter block 71 is only set to be 1 μm to 3 μm, the transmittance of the green sub-pixel can be about 60% to 80%, the transmittance of the blue sub-pixel can be about 50% to 70%, and the transmittance of the red sub-pixel can be about 70% to 95%, thereby realizing the white light white balance of the organic light-emitting display panel. That is, in this application, the white balance of the organic light-emitting display panel is made normal through the spectra of the color filter blocks 71 of different colors and the spectra of the corresponding organic light-emitting units, without adjusting the luminous brightness of the organic light-emitting units.

[0086] In another embodiment of this application, the upper surface of the black light-shielding block 72 can also be set to a rough structure with unevenness, and the roughness of the rough structure is 15 nm to 20 nm. Such a design can reduce the interfacial reflectivity between the black light-shielding block 72 and the surface-coated flat layer 08 to below 0.1%, that is, R2≤0.1%. The rough structure on the surface of the black light-shielding block 72 can be prepared by bombarding the surface of the black light-shielding block 72 with plasma. Specifically, the environment of the plasma bombardment is a vacuum environment of 0.3 Torr including argon, the radio frequency of the plasma is 400, and the flow rate is 500.

[0087] The present application also provides a display device. Figure 17 FIG. is a schematic diagram of a display device provided by an embodiment of the present application. In one embodiment of the present application, as Figure 17 shown, the display device includes the organic light-emitting display panel 001 provided by any embodiment of the present application. Among them, the specific structure of the organic light-emitting display panel 001 has been described in detail in the above embodiments and will not be elaborated here. Of course, Figure 17 the electronic device shown is only for illustrative purposes and may be, for example, any electronic device with a display function such as a mobile phone, a tablet computer, a notebook computer, an e-book, a television, a smart watch, etc.

[0088] The above is only the specific implementation manner of the present application. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should be covered within the protection scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An organic light-emitting display panel, characterized in that, Comprising a first substrate, on which a functional layer is provided, the functional layer comprising: A light-emitting layer, which includes a plurality of organic light-emitting units and a pixel definition layer, and the pixel definition layer is disposed between adjacent organic light-emitting units; A light-filtering layer, which is disposed on a side of the light-emitting layer close to the light-emitting surface of the organic light-emitting display panel; the light-filtering layer includes a plurality of color-resist blocks and a plurality of black light-shielding blocks, and the black light-shielding blocks and the color-resist blocks are arranged alternately, and the color-resist blocks are arranged in one-to-one correspondence with the organic light-emitting units; Wherein, in the thickness direction of the organic light-emitting display panel, the region between adjacent black light-shielding blocks covers the organic light-emitting units; the pixel definition layer is a black light-absorbing layer; The plurality of organic light-emitting units include green organic light-emitting units, blue organic light-emitting units and red organic light-emitting units, and the plurality of color-resist blocks include green color-resist blocks, blue color-resist blocks and red color-resist blocks; the green organic light-emitting units are arranged in correspondence with the green color-resist blocks, the blue organic light-emitting units are arranged in correspondence with the blue color-resist blocks, and the red organic light-emitting units are arranged in correspondence with the red color-resist blocks; The spectral peaks of the color-resist blocks of different colors match the spectral peaks of the corresponding organic light-emitting units; The full width at half maximum of the spectrum of the green color-resist block is less than or equal to 70 nm, the full width at half maximum of the spectrum of the blue color-resist block is greater than or equal to 60 nm and less than or equal to 100 nm, and the full width at half maximum of the left half of the spectrum of the red color-resist block is less than or equal to 25 nm.

2. The organic light-emitting display panel according to claim 1, wherein The pixel definition layer and the black light-shielding blocks are black light-absorbing layers that are infrared-transmissive.

3. The organic light-emitting display panel according to claim 1, wherein The organic light-emitting display panel further includes: A driving circuit layer, which includes a plurality of transistor structures; A planarization layer, which is disposed between the driving circuit layer and the light-emitting layer, and the planarization layer is a black light-absorbing layer.

4. The organic light-emitting display panel according to claim 3, characterized in that, The planarization layer is a black light-absorbing layer that is infrared-transmissive.

5. The organic light-emitting display panel according to claim 1, characterized in that, In the thickness direction of the organic light-emitting display panel, the pixel definition layer below the black light-shielding block is a discontinuous structure.

6. The organic light-emitting display panel according to claim 1, characterized in that In a plane perpendicular to the thickness direction of the organic light-emitting display panel, the minimum distance between the edge of the organic light-emitting unit and the edge of the region between the corresponding adjacent black light-shielding blocks is a first distance, and the first distance is greater than 0.5 μm.

7. The organic light-emitting display panel according to claim 6, wherein The plurality of organic light-emitting units include green organic light-emitting units, blue organic light-emitting units and red organic light-emitting units; The first distance corresponding to the green organic light-emitting units is 3 μm, the first distance corresponding to the blue organic light-emitting units is 1.5 μm, and the first distance corresponding to the red organic light-emitting units is 5 μm.

8. The organic light-emitting display panel according to claim 1, characterized in that, The organic light-emitting display panel further includes a packaging layer, a first planar layer, a second planar layer and a coating planar layer; The packaging layer is disposed between the light-emitting layer and the first planar layer and includes a first inorganic insulating layer, an organic insulating layer and a second inorganic insulating layer, the organic insulating layer is disposed between the first inorganic insulating layer and the second inorganic insulating layer, and the second inorganic insulating layer is disposed on a side of the organic insulating layer close to the first planar layer; At least one of the color resistance block and the black light-shielding block is located between the first planarization layer and the second planarization layer, and the second planarization layer is disposed on a side of the first planarization layer close to the coating planarization layer; Wherein, the refractive index of the second inorganic insulating layer, the refractive index of the first planarization layer, the refractive index of the second planarization layer, and the refractive index of the coating planarization layer decrease in sequence.

9. The organic light-emitting display panel according to claim 8, wherein The refractive index of the second inorganic insulating layer is 1.8, the refractive index of the first planarization layer is 1.62, the refractive index of the second planarization layer is 1.55, and the refractive index of the coating planarization layer is 1.

52.

10. A display device, characterized in that, An organic light-emitting display panel including any one of claims 1-9.

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