Display panel and display device

Abstract

The present application discloses a display panel and a display device. The display panel includes a substrate, a pixel definition layer, a plurality of light-emitting units, a compensation light source, a packaging layer, and a light-shielding layer. The light-shielding layer is disposed on the compensation light source and located in a non-opening region, and is used to block the light emitted by the compensation light source perpendicular to the substrate. Among them, the compensation light source is used to provide compensation emitted light at a preset angle for the light-emitting unit when two adjacent light-emitting units display, and the area of the compensation emitted light changes with the light-emitting intensity of the adjacent light-emitting units; a first compensation light source and a second compensation light source are disposed between two adjacent light-emitting units. The first compensation light source is used to compensate the light-emitting unit adjacent to the first compensation light source, and the second compensation light source is used to compensate the light-emitting unit adjacent to the second compensation light source. By using the compensation light source to adjust the narrow and wide viewing angles of the display panel, the wide-view display effect of the display panel is improved without affecting the display.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] As a self-luminous display technology, OLED is more and more widely used in products. With the increasing attention to personal privacy in modern society, the variable viewing angle function (also known as anti-peeping) of display devices has become an essential function of products. Therefore, the OLED variable viewing angle technology has also become a hot topic of discussion recently.

[0003] Traditional anti-peeping displays attach an anti-peeping film to the surface of the display panel. The anti-peeping film generally uses ultra-fine louver technology, and its principle is similar to that of a vertical louver curtain. It has the function of restricting light from exiting the display panel at a fixed angle, which is the simplest and most direct solution with a high yield and the widest application. However, the anti-peeping angle and anti-peeping degree of general anti-peeping films are limited and cannot be adjusted variably. The viewing angle of general OLED products is mainly changed by adjusting the area of the pixel aperture region, and the adjustment method is fixed, which often brings the problem of reduced brightness. Summary of the Invention

[0004] The purpose of the present application is to provide a display panel and a display device, which can realize the adjustment of the narrow and wide viewing angles of the display panel by using a compensation light source, and improve the wide viewing angle display effect of the display panel without affecting the display.

[0005] The present application discloses a display panel, which includes a substrate, a pixel definition layer, a plurality of light-emitting units, a compensation light source, a packaging layer, and a light-shielding layer. The pixel definition layer is disposed on the substrate and forms a plurality of aperture regions. The plurality of light-emitting units are disposed on the substrate and located in the aperture regions. The compensation light source is disposed on the pixel definition layer and located in non-aperture regions. The packaging layer covers the light-emitting units and is used to seal the light-emitting units. The light-shielding layer is disposed on the compensation light source and located in the non-aperture regions, and is used to block the light rays emitted perpendicularly to the substrate by the compensation light source. Among them, the compensation light source is used to provide compensation light rays at a preset angle for the light-emitting units when two adjacent light-emitting units display, and the area of the compensation light rays changes with the light-emitting intensity of the adjacent light-emitting units. The compensation light source includes a first compensation light source and a second compensation light source. A first compensation light source and a second compensation light source are disposed between two adjacent light-emitting units. The first compensation light source is used to compensate the light-emitting unit adjacent to the first compensation light source, and the second compensation light source is used to compensate the light-emitting unit adjacent to the second compensation light source.

[0006] Optionally, the first compensation light source includes a first non-visible light excitation layer and a first light emission layer, the second compensation light source includes a second non-visible light excitation layer and a second light emission layer, the first light emission layer and the second light emission layer are respectively formed by a metal-organic framework material, and the metal-organic framework material includes a lanthanide metal-organic framework material; the first light emission layer and the second light emission layer are configured to generate visible light under non-visible light excitation, and the visible light includes one of blue light, green light, or red light; the colors of the light emitted by the first light emission layer and the second light emission layer are different; the first non-visible light excitation layer and the second non-visible light excitation layer are configured to emit non-visible light under voltage drive.

[0007] Optionally, the light-emitting unit includes a first-color light-emitting unit and a second-color light-emitting unit, the color of the light emitted by the first-color light-emitting unit is one of red, green, or blue, the color of the light emitted by the second-color light-emitting unit is one of red, green, or blue, and the color of the light emitted by the second-color light-emitting unit is different from the color of the light emitted by the first-color light-emitting unit; within the same non-opening area, the first light emission layer is disposed close to the first-color light-emitting unit, the second light emission layer is disposed close to the second-color light-emitting unit, the color of the light emitted by the first light emission layer is consistent with the color of the light emitted by the first-color light-emitting unit; the color of the light emitted by the second light emission layer is consistent with the color of the light emitted by the second-color light-emitting unit.

[0008] Optionally, the first light emission layer is disposed to surround the first-color light-emitting unit, and the second light emission layer is disposed to surround the second-color light-emitting unit.

[0009] Optionally, the first light emission layer includes a first light emission portion and a second light emission portion, the second light emission layer includes a third light emission portion and a fourth light emission portion, the first non-visible light excitation layer includes a first excitation portion and a second excitation portion, and the second non-visible light excitation layer includes a third excitation portion and a fourth excitation portion; the first light emission portion emits a first compensation outgoing light under the control of the first excitation portion, and the second light emission portion emits a second compensation outgoing light under the control of the second excitation portion; the third light emission portion emits a third compensation outgoing light under the control of the third excitation portion, and the fourth light emission portion emits a fourth compensation outgoing light under the control of the fourth excitation portion; wherein, the intensity of the first compensation outgoing light is greater than or equal to the intensity of the second compensation light, and the intensity of the third compensation outgoing light is greater than or equal to the intensity of the fourth compensation light.

[0010] Optionally, the first light-emitting portion is disposed around the first color light-emitting unit, and the second light-emitting portion is disposed around the first light-emitting portion; the third light-emitting portion is disposed around the second color light-emitting unit, and the fourth light-emitting portion is disposed around the third light-emitting portion; wherein, the intensity of the first compensating emitted light is equal to the intensity of the second compensating light, and the intensity of the third compensating emitted light is equal to the intensity of the fourth compensating light.

[0011] Optionally, the first light-emitting portion and the second light-emitting portion are stacked, and the first light-emitting portion is disposed under the second light-emitting portion; the third light-emitting portion and the fourth light-emitting portion are stacked, and the third light-emitting portion is disposed under the fourth light-emitting portion; the intensity of the first compensating emitted light is greater than or equal to the intensity of the second compensating light, and the intensity of the third compensating emitted light is greater than or equal to the intensity of the fourth compensating light.

[0012] Optionally, the first non-visible light excitation layer is disposed under the first color light-emitting unit. In the orthographic projection on the substrate, the first non-visible light excitation layer overlaps with the first light-emitting layer. The first excitation portion and the second excitation portion are stacked, and the first excitation portion is disposed under the second excitation portion. The wavelengths of the non-visible light emitted by the first excitation portion and the second excitation portion are different; the second non-visible light excitation layer is disposed under the second color light-emitting unit. In the orthographic projection on the substrate, the second non-visible light excitation layer overlaps with the second light-emitting layer. The third excitation portion and the fourth excitation portion are stacked, and the third excitation portion is disposed under the fourth excitation portion. The wavelengths of the non-visible light emitted by the third excitation portion and the fourth excitation portion are different.

[0013] Optionally, the display panel further includes a color filter layer. The color filter layer is disposed on the encapsulation layer. The color filter layer is provided with a plurality of color filter portions corresponding to the opening regions. In each of the opening regions, the color of the color filter portion is the same as the color of the light emitted by the light-emitting unit.

[0014] The present application also discloses a display device, including a driving circuit and the above-mentioned display panel, wherein the driving circuit is used to drive the display panel to display.

[0015] In this application, a first compensation light source and a second compensation light source are respectively arranged in the non-opening area, and the first compensation light source and the second compensation light source respectively compensate the light-emitting units on both sides of the non-opening area. Taking one side as an example, the first compensation light source emits light rays from the non-opening area, and the light rays emitted in the direction perpendicular to the substrate are blocked by the light-shielding layer, so that the light rays emitted by the compensation light source are obliquely emitted from the opening area, thereby forming compensation-emitted light rays with a certain angle, realizing the brightness compensation of the light-emitting units close to the first compensation light source at a certain viewing angle. When the display panel needs to display with a wide viewing angle, the compensation light source is controlled to compensate the light emission at a large viewing angle, and then the adjustment of the narrow and wide viewing angles of the display panel is realized by using the compensation light source, so that people can also clearly see the content displayed on the screen at a large viewing angle, improving the display quality. Moreover, the compensation-emitted light rays emitted by the compensation light source of this application can be adjusted according to the intensity emitted by the adjacent light-emitting units, so that clear display can be achieved under different display pictures, and the situation that the picture cannot be seen clearly at a large viewing angle caused by the inability to adjust the intensity of the compensation-emitted light rays will not occur. Especially when the colors of two adjacent light-emitting units in the same opening area are different, the first compensation light source and the second compensation light source arranged in the same non-opening area respectively compensate different light-emitting units. Especially when the brightness, color, etc. of the two light-emitting units are different, the first compensation light source and the second compensation light source can respectively compensate the adjacent light-emitting units, realizing differential compensation and achieving the display effect with a variable viewing angle of the display panel in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings included are used to provide a further understanding of the embodiments of the present application, and they form a part of the description. They are used to illustrate the implementation manners of the present application and, together with the text description, explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0017] Figure 1 is a schematic diagram of a display panel according to the first embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a pixel of the display panel of the present application;

[0019] Figure 3 is a schematic diagram of another display panel according to the first embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a display panel according to the second embodiment of the present application;

[0021] Figure 5 is a schematic diagram of another display panel according to the second embodiment of the present application;

[0022] Figure 6 is a driving schematic diagram of the first non-visible light excitation layer of the present application;

[0023] Figure 7 is a schematic diagram of the display device of the present application.

[0024] Among them, 100 is the display panel; 101 is the opening area; 102 is the non-opening area; 110 is the substrate; 111 is the pixel definition layer; 112 is the encapsulation layer; 120 is the light-emitting unit; 121 is the first color light-emitting unit; 122 is the second color light-emitting unit; 130 is the first compensation light source; 131 is the first light-emitting layer; 1311 is the first light-emitting part; 1312 is the second light-emitting part; 132 is the first non-visible light excitation layer; 1321 is the first excitation part; 1322 is the second excitation part; 140 is the second compensation light source; 141 is the second light-emitting layer; 1411 is the third light-emitting part; 1412 is the fourth light-emitting part; 142 is the second non-visible light excitation layer; 1421 is the third excitation part; 1422 is the fourth excitation part; 150 is the color filter layer; 151 is the color filter part; 152 is the light-shielding layer; R is the red sub-pixel; G is the green sub-pixel; B is the blue sub-pixel; 200 is the display device; 210 is the driving circuit. Detailed Embodiments

[0025] It should be understood that the terms, the specific structures and functional details disclosed here are only for the purpose of describing specific embodiments, which are representative. However, the present application can be specifically implemented in many alternative forms and should not be construed as being limited only to the embodiments described herein.

[0026] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the quantity of the indicated technical features. Thus, unless otherwise stated, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "a plurality" is two or more. In addition, the terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "vertical", "horizontal", etc. are described based on the orientation or relative positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, rather than indicating that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0027] The present application will be described in detail below with reference to the accompanying drawings and optional embodiments.

[0028] Figure 1 is a schematic diagram of a display panel according to a first embodiment of the present application. Refer to Figure 1 As shown, the present application discloses a display panel 100, which includes a substrate 110, a pixel definition layer 111, a plurality of light-emitting units 120, a compensation light source, a packaging layer 112, and a light-shielding layer 152. The pixel definition layer 111 is disposed on the substrate 110 and forms a plurality of opening regions 101. A plurality of light-emitting units 120 are disposed on the substrate 110 and located in the opening regions 101. The compensation light source is disposed on the pixel definition layer 111 and located in the non-opening regions 102. The packaging layer 112 covers the light-emitting units 120 and is used to seal the light-emitting units 120. The light-shielding layer 152 is disposed on the compensation light source and located in the non-opening regions 102, and is used to block the light emitted perpendicularly to the substrate 110 by the compensation light source. Wherein, the compensation light source is used to provide compensation light rays at a preset angle for the light-emitting units 120 when two adjacent light-emitting units 120 display, and the area of the compensation light rays changes with the light-emitting intensity of the adjacent light-emitting units 120. The compensation light source includes a first compensation light source 130 and a second compensation light source 140. The first compensation light source 130 and the second compensation light source 140 are disposed between two adjacent light-emitting units 120. The first compensation light source 130 is used to compensate the light-emitting unit 120 adjacent to the first compensation light source 130, and the second compensation light source 140 is used to compensate the light-emitting unit 120 adjacent to the second compensation light source 140.

[0029] In this application, a first compensation light source 130 and a second compensation light source 140 are respectively arranged in the non-opening area 102, and the first compensation light source 130 and the second compensation light source 140 respectively compensate the light-emitting units 120 on both sides of the non-opening area 102. Taking one side as an example, the first compensation light source 130 emits light rays from the non-opening area 102, and the light rays emitted in the direction perpendicular to the substrate 110 are blocked by the light-shielding layer 152, so that the light rays emitted by the compensation light source are obliquely emitted from the opening area 101, thereby forming compensation light rays with a certain angle, and realizing brightness compensation for the light-emitting unit 120 close to the first compensation light source 130 at a certain viewing angle. When the display panel 100 needs to display with a wide viewing angle, the compensation of the light emission at a large viewing angle is realized by controlling the compensation light source, and then the adjustment of the narrow and wide viewing angles of the display panel 100 is realized by using the compensation light source, so that people can also clearly see the content displayed on the screen at a large viewing angle, improving the display quality. Moreover, the compensation light rays emitted by the compensation light source of this application can be adjusted according to the intensity emitted by the adjacent light-emitting unit 120, so that clear display can be achieved under different display pictures, and the situation that the picture cannot be seen clearly at a large viewing angle due to the unadjustable intensity of the compensation light rays causing color mixing of the picture will not occur. Especially when the colors of two adjacent light-emitting units 120 in the same opening area 101 are different, the first compensation light source 130 and the second compensation light source 140 arranged in the same non-opening area 102 respectively compensate different light-emitting units 120. Especially when the brightness, color, etc. of the two light-emitting units 120 are different, the first compensation light source 130 and the second compensation light source 140 can respectively compensate the adjacent light-emitting units 120 to achieve differential compensation, and realize the display effect with a variable viewing angle of the display panel 100 in a limited space.

[0030] Figure 2 is a schematic diagram of the pixels of the display panel of this application, see Figure 2As shown, in the display panel 100, a pixel can generally be divided into multiple sub-pixel combinations. For example, a pixel can include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Different colors are displayed by the different grayscales of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B respectively. Structurally, each sub-pixel of a different color corresponds to a light-emitting unit 120, and the light-emitting units 120 corresponding to the sub-pixels of different colors emit different lights. In this case, two adjacent light-emitting units 120 in the non-opening area 102 often emit lights of different colors. When a compensation light source is arranged in the non-opening area 102, since the colors and brightness (grayscale) of the lights emitted by the two adjacent light-emitting units 120 are different, the compensation light source cannot adapt to the different colors and brightness of the two light-emitting units 120. As a result, when the brightness of one of the light-emitting units 120 is compensated, the compensated light interferes with the emitted light of the other light-emitting unit 120 when it exits from the opening area 101 of the other light-emitting unit 120. In the present application, two compensation light sources are arranged in a non-opening area 102, and the two compensation light sources respectively compensate the two adjacent light-emitting units 120, so that the compensated lights respectively adapt to different emission brightnesses.

[0031] It is worth mentioning that when the angle between the human eye viewing direction and the display screen of the display panel 100 is less than or equal to 60 degrees, due to the insufficient brightness of the emitted light of the pixels of the display panel 100 at the side viewing angle, the display pixels of the user are inaccurate at the side viewing angle. Therefore, it is necessary to compensate the emitted light at the side viewing angle. Moreover, at different display gray levels, that is, when the light intensities emitted by the light-emitting units 120 of different colors of the display panel 100 are different, compensated emitted lights of different brightnesses are required to compensate the side viewing display. Therefore, the preset angle in the compensated emitted light of the preset angle mainly provided in this embodiment is mainly the compensated emitted light at a large viewing angle, generally between 12 degrees and 60 degrees, and the side viewing display within this range is compensated.

[0032] Specifically, the first compensation light source 130 includes a first non-visible light excitation layer 132 and a first light emission layer 131, the second compensation light source 140 includes a second non-visible light excitation layer 142 and a second light emission layer 141. The first light emission layer 131 and the second light emission layer 141 are respectively formed by using metal-organic framework materials, and the metal-organic framework materials include lanthanide metal-organic framework materials. The first light emission layer and the second light emission layer are respectively used to generate visible light under the excitation of non-visible light, and the visible light includes one of blue light, green light, or red light. The first non-visible light excitation layer 132 and the second non-visible light excitation layer 142 are used to emit non-visible light under voltage drive.

[0033] In this embodiment, a lanthanide metal-organic framework material is used, which can generate visible light under non-visible light to achieve an expansion of the display viewing angle. The advantage of the metal-organic framework material of the present application is that it does not require a voltage to be provided inside the display panel 100 for driving, avoiding complex wiring in the plane. This can be achieved by providing a first light-emitting layer 131 disposed on the same layer as the light-emitting unit 120 in the non-opening area 102, and corresponding first non-visible light excitation layer 132 and second non-visible light excitation layer 142 disposed below the second light-emitting layer. By setting the compensation light source in the non-opening area 102, for example, on the pixel definition layer 111 or other positions where it is easy to implement, the compensation light source can be set with a relatively small occupied space. Compared with the exemplary technology of synchronously setting the compensation light source in the non-opening area 102 using the light-emitting unit 120, it does not require too much area and does not need to improve the non-opening position within the pixel. Due to the problem of the occupied area of the device of the light-emitting unit 120, when using the light-emitting unit 120 in the non-opening area 102, the position of the opening needs to be squeezed. When originally three sub-pixels form a pixel, at this time, within one pixel, the compensation sub-pixel will also occupy an area, resulting in the need to set four sub-pixels, reducing the opening area and causing display problems.

[0034] Among them, the light emitted by the first light-emitting layer 131 and the second light-emitting layer 141 has different colors.

[0035] Specifically, the metal-organic framework material is a porous material formed by the self-assembly of metal ions and organic ligands. Both metal ions and organic ligands can serve as potential light-emitting centers, and the pores of MOFs can also accommodate light-emitting guests. The metal-organic framework material in this embodiment can emit monochromatic light or polychromatic light. Under the excitation of non-visible light, the light emitted by different organic ligands or metal ions is also different. For example, lanthanide metal ions (such as Ln3+, Eu3+, Tb3+ and Dy3+) and organic ligands with non-uniformly distributed carboxyl groups (such as isophthalic acid derivatives). Through the anisotropic growth of metal ions and organic ligands, they are first assembled into a ribbon structure, and then these nanoribbons are wound together and gelated to form a MOF gel. By adjusting the type and / or proportion of Ln3+ ions, a mixed metal MOF gel with full-color emission can be prepared. The coordination center lanthanide metal ions (Eu3+, Tb3+ or Dy3+) can produce emissions of different colors, thereby achieving controllable multi-color under the excitation of the same wavelength. At the same time, by changing the ion type and proportion, emissions of the same color at different wavelengths can be achieved.

[0036] The metal-organic framework material in this embodiment is mainly a lanthanide metal-organic framework material. The lanthanide metal-organic framework material has the property of emitting light under non-visible light excitation and has various forms of luminescence, such as simultaneous luminescence of ligands and metal ions, simultaneous luminescence of host and guest, simultaneous luminescence of mixed metals, and simultaneous luminescence of mixed MOFs. Taking the simultaneous luminescence of ligands and metal ions as an example, the lanthanide metal ions in the lanthanide organic framework material have an antenna effect, that is, the ligand absorbs energy to the excited state, undergoes intersystem crossing to the triplet state, and the triplet state sensitizes the lanthanide ions to achieve antenna effect luminescence. Among them, to achieve the simultaneous luminescence of ligands and metal ions, the energy transfer efficiency from the ligand to the europium ion can be regulated by introducing a boronic acid group onto terephthalic acid. By utilizing the simultaneous luminescence of ligands and metal ions, the boronic acid group has a strong affinity for fluoride ions and H2O2, realizing the ratiometric luminescence sensing and visual detection of fluoride ions and H2O2. Different from regulating energy transfer, the aggregation-induced emission ligand and lanthanide ions are used to prepare MOFs, and the luminescence is enhanced by coordinating to restrict the intramolecular rotation of the ligand, combined with the antenna effect luminescence of europium ions, to achieve the simultaneous enhanced luminescence of the ligand and europium ions. For example, by adjusting the ratio of lanthanide element ions and ligands, taking Ln-MOF[TbxEu1-x (TCBA)(H2O)]2·DMF as an example, where the characteristic of Eu(III) is to emit red light, the characteristic of Tb(III) is to emit green light, and the characteristic of Gd(III) is to emit blue light, the luminescence color can be changed by adjusting the ratio of Eu(III), Tb(III), and Gd(III). That is, different colored luminescent MOFs can be achieved by combining different ligands and metal ions. For simultaneous luminescence of host and guest, simultaneous luminescence of mixed metals, and mixed MOFs, the ligands and metal ions used are generally different. Taking the Ru@MIL-NH2 material as an example of simultaneous luminescence of host and guest, Ru(bpy) 32+ has red fluorescence and MIL-NH2 has blue fluorescence, realizing blue-red host-guest luminescence of MOFs under a single excitation of 300 nm. Simultaneous luminescence of mixed metals can be achieved by using Ln3+ ions with similar atomic radii and coordination modes. By adjusting the ratio of Ln3+ ions, it is easy to prepare mixed lanthanide metal MOFs. Utilizing the red, green, and blue luminescence of Eu3+, Tb3+, and Dy3+. For simultaneous luminescence of mixed MOFs, taking Eu3+ and Tb3+ as metal nodes, red-light Eu-MOFs and green-light Tb-MOFs are respectively prepared by reacting with 2,5-benzenedicarboxylic acid boronic acid, and together with blue-light UiO-66-NH2, a tricolor MOFs ink is prepared.

[0037] In addition to the four luminescence paradigms for realizing multi-luminescent lanthanide metal-organic framework materials mentioned above, mixed ligands as luminescence centers and single ligands with multi-luminescence can also be used to prepare multi-luminescent MOFs. Among them, by adjusting the ratios of Eu(III), Tb(III), and Gd(III), and the ratios of Eu3+, Tb3+, and Dy3+, etc., wavelengths in the range of 250 nm to 350 nm of invisible light can be selected to achieve different luminescence colors for lanthanide metal-organic framework materials of different materials. In this embodiment, it is mainly utilized that lanthanide metal-organic framework materials can emit monochromatic light such as red, green, or blue under different material ratios, to achieve red light compensation, green light compensation, and blue light compensation.

[0038] Specifically, the light-emitting unit 120 includes a first-color light-emitting unit 121 and a second-color light-emitting unit 122. The color of the light emitted by the first-color light-emitting unit 121 is one of red, green, or blue, and the color of the light emitted by the second-color light-emitting unit 122 is one of red, green, or blue, and the color of the light emitted by the second-color light-emitting unit 122 is different from the color of the light emitted by the first-color light-emitting unit 121. Within the same non-opening area 102, the first light-emitting layer 131 is disposed close to the first-color light-emitting unit 121, and the second light-emitting layer 141 is disposed close to the second-color light-emitting unit 122. The color of the light emitted by the first light-emitting layer 131 is the same as the color of the light emitted by the first-color light-emitting unit 121; the color of the light emitted by the second light-emitting layer 141 is the same as the color of the light emitted by the second-color light-emitting unit 122.

[0039] In this embodiment, the first light-emitting layer 131 and the second light-emitting layer 141 can achieve luminescence of different colors by adjusting different lanthanide metal-organic framework materials, so as to achieve separate compensation for the first-color light-emitting unit 121 and the second-color light-emitting unit 122. For example, when the first light-emitting unit 120 is a red light-emitting unit 120, the light emitted by the first light-emitting layer 131 is also red; when the second light-emitting unit 120 is a green light-emitting unit 120, the light emitted by the second light-emitting layer 141 is also green.

[0040] It is worth mentioning that since there are generally three types of light-emitting units 120 with different colors in the display panel 100, and the compensation light source of the present application is arranged between two adjacent light-emitting units 120 with different colors. When the colors of the light-emitting units 120 on both sides of the compensation light source are red and green, or red and blue, or blue and green respectively, the first light-emitting layer 131 has different extensions at corresponding different positions. In other words, the colors of the first light-emitting layer 131 and the second light-emitting layer 141 at different positions of the non-opening area 102 in this embodiment are different, mainly depending on the colors emitted by the light-emitting units 120 on both sides of the non-opening area 102. In this embodiment, the first light-emitting layer 131 and the second light-emitting layer 141 are defined in the same non-opening area 102. The "first" and "second" are only used to distinguish the positions of the light-emitting layers, being close to the first-color light-emitting unit 121 and the second-color light-emitting unit 122 respectively.

[0041] Figure 3 It is a schematic diagram of another display panel according to the first embodiment of the present application. Refer to Figure 3 As shown, in this embodiment, in order to further reduce the influence of the first light-emitting layer 131 on the second-color light-emitting unit 122, a color filter layer 150 can be provided on the encapsulation layer 112. The color filter layer 150 is provided with color filter parts 151 corresponding to the opening areas 101. In each of the opening areas 101, the color of the color filter part 151 is the same as the color of the light emitted by the light-emitting unit 120. Generally speaking, the color filter parts 151 include a red filter part, a green filter part, and a blue filter part. The positions where three adjacent color filter parts 151 with different colors are located can form a pixel, which are respectively called a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. By controlling the light-emitting intensities of the light-emitting units 120 at the corresponding positions of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B, the number of light rays passing through the red filter part, the green filter part, and the blue filter part changes, so as to realize color display within the pixel. Any color can be formed within a pixel, that is, by controlling the gray levels of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B, different color displays can be realized. Moreover, in this embodiment, the above-mentioned light-shielding layer 152 can be formed on the same layer as the color filter part 151, and the black matrix in the color filter layer 150 is used as the light-shielding layer 152.

[0042] In this embodiment, after the color filter layer 150 is provided, due to the light filtering effect of the color filter portion 151, when the light emitted from the first light emitting layer 131 enters the color filter portion 151 corresponding to the second color light emitting unit 122, it will be blocked and absorbed by the color filter portion 151, thereby avoiding the influence of the first light emitting layer 131 on the second color light emitting unit 122. With the use of the first light emitting layer 131 and the second light emitting layer 141 of the present application, the influence on the light emission of adjacent light emitting units 120 is reduced under the condition of light compensation.

[0043] Specifically, as shown in Figures 2 to 3 The first light emitting layer 131 is disposed around the first color light emitting unit 121, and the second light emitting layer 141 is disposed around the second color light emitting unit 122.

[0044] In this embodiment, since the first light emitting layer 131 is disposed around the first color light emitting unit 121, light compensation is achieved for the side view angle of one week of the first color light emitting unit 121. The light emitted from the first light emitting layer 131 can be seen under the side view angles in four directions including up, down, left, and right of this one-week side view angle. Compared with the case where only one color compensation light source is provided in the non-opening area 102, the light compensation effect is greatly improved.

[0045] Figure 4 It is a schematic diagram of a display panel according to the second embodiment of the present application. Refer to Figure 4 As shown, the first light emitting layer 131 includes a first light emitting portion 1311 and a second light emitting portion 1312, the second light emitting layer 141 includes a third light emitting portion 1411 and a fourth light emitting portion 1412, the first non-visible light excitation layer 132 includes a first excitation portion 1321 and a second excitation portion 1322, and the second non-visible light excitation layer 142 includes a third excitation portion 1421 and a fourth excitation portion 1422; the first light emitting portion 1311 emits a first compensation emitted light under the control of the first excitation portion 1321, and the second light emitting portion 1312 emits a second compensation emitted light under the control of the second excitation portion 1322; the third light emitting portion 1411 emits a third compensation emitted light under the control of the third excitation portion 1421, and the fourth light emitting portion 1412 emits a fourth compensation emitted light under the control of the fourth excitation portion 1422.

[0046] In this embodiment, the first light-emitting layer 131 includes a first light-emitting portion 1311 and a second light-emitting portion 1312 as an example for illustration, and it is not limited that the first light-emitting layer 131 only includes two light-emitting portions. In this solution, mainly considering that when displaying high gray levels and low gray levels, if the light-emitting units 120 with different display gray levels have the same compensation light, there will be a problem that the side view angle of the low gray level side is brighter and the side view angle of the high gray level side is darker. Therefore, in this embodiment, it is necessary to distinguish the light compensation of the side view angles of high gray levels and low gray levels. For example, at high gray levels, the compensation light has a greater brightness, and at low gray levels, the compensation brightness is smaller, so as to achieve a better compensation effect.

[0047] In this solution, the first light-emitting portion 1311 and the second light-emitting portion 1312 are mainly controlled to work simultaneously or separately by the non-visible light emitted by the first excitation portion 1321 and the second excitation portion 1322, so as to achieve at least two levels of light compensation brightness. Of course, more levels of brightness compensation can also be achieved by continuing to increase the number of light-emitting portions. Among them, the third light-emitting portion 1411 and the fourth light-emitting portion 1412 are controlled in the same way as the first light-emitting portion and the second light-emitting portion to achieve the light compensation of the second color light-emitting unit 122.

[0048] Specifically, the intensity of the first compensated outgoing light is greater than or equal to the intensity of the second compensated light, and the intensity of the third compensated outgoing light is greater than or equal to the intensity of the fourth compensated light.

[0049] In this solution, the brightness of the first light-emitting portion 1311 and the second light-emitting portion 1312 can be the same or different. When the brightness of the first light-emitting portion 1311 and the second light-emitting portion 1312 is the same, it is necessary to control the first light-emitting portion 1311 and the second light-emitting portion 1312 to be turned on simultaneously and separately to achieve different compensation brightness. When the brightness of the first light-emitting portion 1311 and the second light-emitting portion 1312 is set to be different, multi-level brightness compensation can be achieved by separately controlling the first light-emitting portion 1311 or the second light-emitting portion 1312 to be turned on or off.

[0050] Specifically, taking the example where the brightness settings of the first light emitting part 1311 and the second light emitting part 1312 are different, the intensity of the first compensated emitted light is greater than that of the second compensated emitted light. When the light emitting intensity of the light emitting unit 120 is within the first range, the second light emitting part 1312 operates. When the light emitting intensity of the light emitting unit 120 is within the second range, the first light emitting part 1311 operates. For example, when the display panel 100 displays in 256 gray levels, the display pixels with gray levels from 0 to 127 can be configured such that the second light emitting part 1312 operates, and the display pixels with gray levels from 128 to 255 can be configured such that the first light emitting part 1311 operates, so as to achieve compensation for low gray level display with the second light emitting part 1312 and compensation for high gray level display with the first light emitting part 1311.

[0051] Generally speaking, the first light emitting part 1311 and the second light emitting part 1312 need to be controlled according to the gray levels displayed by the adjacent light emitting units 120. Of course, they can also be controlled in regions, or according to the overall value of the lower displayed gray levels. For example, when more than half of the pixels in the current display screen are high gray level displays, the first light emitting part 1311 is controlled to operate. When more than half of the pixels in the current display panel 100 are low gray levels, the second light emitting part 1312 is controlled to operate. Although the above overall value control method is not very precise and accurate, it has strong feasibility and obvious improvement effect on the side view angle picture.

[0052] In one embodiment, the first light emitting part 1311 is disposed around the first color light emitting unit 121, and the second light emitting part 1312 is disposed around the first light emitting part 1311; the third light emitting part 1411 is disposed around the second color light emitting unit 122, and the fourth light emitting part 1412 is disposed around the third light emitting part 1411; wherein, the intensity of the first compensated emitted light is equal to the intensity of the second compensated light, and the intensity of the third compensated emitted light is equal to the intensity of the fourth compensated light.

[0053] In this embodiment, taking the first light emitting layer 131 as an example, the first light emitting portion 1311 and the second light emitting portion 1312 are arranged on the same layer. By arranging the first light emitting portion 1311 and the second light emitting portion 1312 on the same layer, different viewing angle compensations can be obtained when the first light emitting portion 1311 or the second light emitting portion 1312 is turned on separately. Since the second light emitting portion 1312 is arranged on the side of the first light emitting portion 1311 away from the first color light emitting unit 121, the inclination angle of the light emitted by the second light emitting portion 1312 is larger, so as to achieve a larger angle of light compensation. In this embodiment, different viewing angle switching compensations can be realized by switching the first light emitting portion 1311 and the second light emitting portion 1312 to work simultaneously or separately.

[0054] Figure 5 It is a schematic diagram of another display panel according to the second embodiment of the present application. Refer to Figure 5 As shown, in another embodiment, the first light emitting portion 1311 and the second light portion are stacked, and the first light emitting portion 1311 is arranged below the second light emitting portion 1312; the third light emitting portion 1411 and the fourth light emitting portion 1412 are stacked, and the third light emitting portion 1411 is arranged below the fourth light emitting portion 1412; the intensity of the first compensated outgoing light is greater than or equal to the intensity of the second compensated light, and the intensity of the third compensated outgoing light is greater than or equal to the intensity of the fourth compensated light.

[0055] In this embodiment, considering that the display panel 100 generally has multiple gray levels from 0 to 255, when the display panel 100 uses different gray levels for display, the present application realizes different intensity light compensations through the stacked first light emitting portion 1311 and second light emitting portion 1312. For example, when the intensity of the first compensated outgoing light is equal to the intensity of the second compensated light, the number of light emitting portions can be controlled to achieve step-by-step brightness compensation. And multiple light emitting portions can be set to achieve multi-gradient compensation. For example, when the intensity of the first compensated outgoing light is greater than the intensity of the second compensated light, the first light emitting portion 1311 and the second light emitting portion 1312 can be controlled to emit light separately and simultaneously, so as to achieve at least three levels of light compensation. It can be understood that when the number of light emitting portions increases, the number of non-visible light excitation layers can be increased synchronously to control the light emitting portions synchronously. When the space of the non-opening area 102 is sufficient, when setting multiple light emitting portions, the first light emitting portion 1311 and the second light emitting portion 1312 can be arranged on the same layer and stacked to achieve multi-step multi-viewing angle light compensation.

[0056] Specifically, for the setting of the first non-visible light excitation layer 132 and the second non-visible light excitation layer 142, the first non-visible light excitation layer 132 can be disposed under the first color light-emitting unit 121. Under the orthographic projection of the substrate 110, the first non-visible light excitation layer 132 overlaps with the first light-emitting layer 131. The first excitation part 1321 and the second excitation part 1322 are stacked, and the first excitation part 1321 is disposed under the second excitation part 1322. The wavelengths of the non-visible light emitted by the first excitation part 1321 and the second excitation part 1322 are different. The second non-visible light excitation layer 142 is disposed under the second color light-emitting unit 122. Under the orthographic projection of the substrate 110, the second non-visible light excitation layer 142 overlaps with the second light-emitting layer 141. The third excitation part 1421 and the fourth excitation part 1422 are stacked, and the third excitation part 1421 is disposed under the fourth excitation part 1422. The wavelengths of the non-visible light emitted by the third excitation part 1421 and the fourth excitation part 1422 are different.

[0057] Figure 6 is a driving schematic diagram of the first non-visible light excitation layer of the present application, in combination with Figures 4 to 6As shown, in this embodiment, the first non-visible light excitation layer 132 and the second non-visible light excitation layer 142 can be arranged on the same layer, and can be located between the substrate 110 and the light-emitting unit 120 or on the side of the substrate 110 away from the light-emitting unit 120. Taking the first non-visible light excitation layer 132 as an example specifically, for the driving of the first excitation part 1321 and the second excitation part 1322, it is necessary to keep the corresponding light-emitting unit 120 displaying or turning off simultaneously. The first excitation part 1321 and the second excitation part 1322 respectively need to be driven by two electrodes. However, considering that the first excitation part 1321 and the second excitation part 1322 are stacked, the first excitation part 1321 and the second excitation part 1322 can share one electrode. Then, by controlling the other electrode of the first excitation part 1321 and the second excitation part 1322 for driving, taking the other electrode as the first electrode for the first excitation part 1321 and the second electrode for the second excitation part 1322 as an example. The first excitation part 1321 is driven by the first active switch, and the second excitation part 1322 is driven by the second active switch. The gate of the first active switch is connected to the first control signal, the input end of the first active switch is connected to the anode (bottom electrode) of the corresponding light-emitting unit 120, the output end of the first active switch is connected to the first electrode, the gate of the second active switch is connected to the second control signal, the input end of the second active switch is connected to the anode of the above-mentioned light-emitting unit 120, and the output end of the second active switch is connected to the second electrode. Under the control of the first control signal and the second control signal, when the above-mentioned light-emitting unit 120 emits light, the first excitation part 1321 or the second excitation part 1322 can be controlled to work. The first control signal and the second control signal are mainly determined according to the gray scale of the display screen. It is worth mentioning that the whole first excitation part 1321 and the second excitation part 1322 can be arranged under the light-emitting unit 120, extending from one side of the light-emitting unit 120 to the other side, so that the first light-emitting part 1311 and the second light-emitting part 1312 surrounded by the non-opening area 102 around the light-emitting unit 120 are all controlled by the same first excitation part 1321 and the second excitation part 1322, thereby reducing the manufacturing process difficulty.

[0058] Figure 7 is a schematic diagram of the display device of the present application. Refer to Figure 7 As shown, the present application also discloses a display device. The display device 200 includes a driving circuit 210 and the display panel 100 in any of the above embodiments. The driving circuit 210 is used to drive the display panel 100 to display.

[0059] It should be noted that the inventive concept of this application can form a very large number of embodiments. However, due to the limited space of the application documents, it is impossible to list them one by one. Therefore, on the premise of non-conflict, the above-described embodiments or technical features can be arbitrarily combined to form new embodiments. After the combination of each embodiment or technical feature, the original technical effect will be enhanced.

[0060] The above content is a further detailed description of this application in combination with specific optional implementation manners. It cannot be determined that the specific implementation of this application is only limited to these descriptions. For those of ordinary skill in the technical field to which this application belongs, without departing from the concept of this application, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of this application.

Claims

1. A display panel, characterized in that: include: substrate substrate; A pixel definition layer is disposed on the base substrate and forms a plurality of opening areas; A plurality of light emitting units are arranged on the base substrate and located in the opening area; A compensation light source is arranged on the pixel definition layer and located in the non-opening area; An encapsulation layer, arranged to cover the light-emitting unit and to seal the light-emitting unit; as well as A light shielding layer, disposed on the compensation light source and located in the non-opening area, for shielding the outgoing light of the compensation light source perpendicular to the base substrate; Wherein, the compensation light source is used to provide the light emitting unit with a compensation light of a preset angle when two adjacent light emitting units emit light for display, and the area of ​​the compensation light varies with the light intensity of the adjacent light emitting units; The compensation light source includes a first compensation light source and a second compensation light source, and at least the first compensation light source and the second compensation light source are arranged between two adjacent light-emitting units, the first compensation light source is used to compensate the light-emitting unit adjacent to the first compensation light source; the second compensation light source is used to compensate the light-emitting unit adjacent to the second compensation light source; The first compensation light source includes a first non-visible light excitation layer and a first light emitting layer, and the second compensation light source includes a second non-visible light excitation layer and a second light emitting layer, the first light emitting layer and the second light emitting layer are respectively formed of metal organic framework materials, and the metal organic framework materials include lanthanide metal organic framework materials; the first light emitting layer and the second light emitting layer are used to generate visible light under non-visible light excitation, and the visible light includes one of blue light, green light or red light; the first non-visible light excitation layer and the second non-visible light excitation layer are used to emit non-visible light under voltage drive; The light-emitting unit includes a first color light-emitting unit and a second color light-emitting unit, the color of the light emitted by the first color light-emitting unit is one of red, green or blue, the color of the light emitted by the second color light-emitting unit is one of red, green or blue, and the color of the light emitted by the second color light-emitting unit is different from the color of the light emitted by the first color light-emitting unit; In the same non-opening area, the first light emitting layer is arranged close to the first color light emitting unit, and the second light emitting layer is arranged close to the second color light emitting unit, and the color of the light emitted by the first light emitting layer is consistent with the color of the light emitted by the first color light emitting unit; the color of the light emitted by the second light emitting layer is consistent with the color of the light emitted by the second color light emitting unit; The first light emitting layer is arranged around the first color light emitting unit, and the second light emitting layer is arranged around the second color light emitting unit; The first light emitting layer includes a first light emitting portion and a second light emitting portion, the second light emitting layer includes a third light emitting portion and a fourth light emitting portion, the first non-visible light excitation layer includes a first excitation portion and a second excitation portion, and the second non-visible light excitation layer includes a third excitation portion and a fourth excitation portion; The first light emitting unit emits a first compensating emergent light under the control of the first exciting unit, and the second light emitting unit emits a second compensating emergent light under the control of the second exciting unit; The third light emitting unit emits a third compensating emergent light under the control of the third excitation unit, and the fourth light emitting unit emits a fourth compensating emergent light under the control of the fourth excitation unit; The intensity of the first compensating emergent light is greater than or equal to the intensity of the second compensating emergent light, and the intensity of the third compensating emergent light is greater than or equal to the intensity of the fourth compensating emergent light.

2. The display panel according to claim 1, characterized in that: The first light emitting portion is disposed around the first color light emitting unit, and the second light emitting portion is disposed around the first light emitting portion; The third light emitting portion is disposed around the second color light emitting unit, and the fourth light emitting portion is disposed around the third light emitting portion; The intensity of the first compensating emergent light is equal to the intensity of the second compensating emergent light, and the intensity of the third compensating emergent light is equal to the intensity of the fourth compensating emergent light.

3. The display panel according to claim 1, characterized in that: The first light emitting portion and the second light emitting portion are stacked, and the first light emitting portion is arranged under the second light emitting portion; The third light emitting portion is stacked with the fourth light emitting portion, and the third light emitting portion is arranged under the fourth light emitting portion; The intensity of the first compensating emergent light is greater than or equal to the intensity of the second compensating emergent light, and the intensity of the third compensating emergent light is greater than or equal to the intensity of the fourth compensating emergent light.

4. The display panel according to claim 1, characterized in that: The first non-visible light excitation layer is disposed under the first color light emitting unit, and under the orthographic projection of the base substrate, the first non-visible light excitation layer overlaps with the first light emitting layer. The first excitation portion and the second excitation portion are stacked, the first excitation portion is arranged under the second excitation portion, and the wavelengths of the non-visible light emitted by the first excitation portion and the second excitation portion are different; The second non-visible light excitation layer is disposed under the second color light emitting unit, and under the orthographic projection of the base substrate, the second non-visible light excitation layer overlaps with the second light emitting layer. The third excitation portion is stacked with the fourth excitation portion, the third excitation portion is arranged under the fourth excitation portion, and the wavelengths of the non-visible light emitted by the third excitation portion and the fourth excitation portion are different.

5. The display panel according to claim 1, characterized in that: The display panel also includes a color filter layer, which is arranged on the encapsulation layer. The color filter layer has a plurality of color filter parts corresponding to the opening areas. In each of the opening areas, the color of the color filter part is consistent with the color of the light emitted by the light-emitting unit.

6. A display device, characterized in that: It comprises a driving circuit and the display panel according to any one of claims 1 to 5, wherein the driving circuit is used to drive the display panel to display.

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