Display panel and display device

Abstract

The invention discloses a display panel and a display device.The display panel comprises a substrate, a pixel definition layer, a plurality of light-emitting units, a compensation light source, a packaging layer and a shading layer, the shading layer is arranged on the compensation light source, located in a non-opening area and used for shading emergent light, perpendicular to the substrate, of the compensation light source, the compensation light source is used for providing compensation emergent light with a preset angle for the light-emitting units when the two adjacent light-emitting units display, and the area of the compensation emergent light changes along with the light-emitting intensity of the adjacent light-emitting units; a first compensation light source and a second compensation light source are arranged between every two adjacent light-emitting units, the first compensation light source is used for compensating the light-emitting unit adjacent to the first compensation light source, and the second compensation light source is used for compensating the light-emitting unit adjacent to the second compensation light source. The wide and narrow viewing angles of the display panel are adjusted through the compensation light source, and the wide viewing angle display effect of the display panel is improved under the condition that display is not affected.

Description

Technical Field

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

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

[0003] Traditional anti-peeping display is to attach an anti-peeping film on the surface of the display panel. The anti-peeping film generally uses ultra-fine blinds technology, and the principle is similar to that of vertical blinds. The display with the function of limiting the light to exit the display panel from a fixed angle is the simplest and most direct solution, with a higher yield and the most extensive application. However, the anti-peeping angle and degree of anti-peeping of general anti-peeping films are limited and cannot be adjusted variably. The viewing angle change of general OLED products is mainly achieved by adjusting the area of ​​the pixel opening area, and the adjustment method is fixed, which often leads to the problem of low brightness. Summary of the invention

[0004] The purpose of the present application is to provide a display panel and a display device, which can adjust the wide and narrow viewing angles of the display panel by utilizing a compensating light source, thereby improving 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, an encapsulation layer and a light shielding layer, wherein the pixel definition layer is arranged on the substrate and forms a plurality of opening areas, a plurality of light-emitting units are arranged on the substrate and located in the opening areas, and the compensation light source is arranged on the pixel definition layer and located in the non-opening areas; the encapsulation layer covers the light-emitting units and is used to seal the light-emitting units; the light shielding layer is arranged on the compensation light source and is located in the non-opening areas, and is used to shield the outgoing light of the compensation light source perpendicular to the substrate, wherein the compensation light source is used to provide the light-emitting units with compensation outgoing light of a preset angle when two adjacent light-emitting units are displayed, and the area of ​​the compensation outgoing light varies with the luminous intensity of the adjacent light-emitting units; the compensation light source includes a first compensation light source and a second compensation light source, and the first compensation light source and the second compensation light source are arranged between the 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 emitting layer, and the second compensation light source includes a second non-visible light excitation layer and a second light emitting layer, and 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 light emitting layer and the second light emitting layer emit light of different colors; 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.

[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; 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.

[0008] Optionally, the first light emitting layer is disposed around the first color light emitting unit, and the second light emitting layer is disposed around the second color light emitting unit.

[0009] Optionally, 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 portion emits a first compensation emergent light under the control of the first excitation portion, and the second light emitting portion emits a second compensation emergent light under the control of the second excitation portion; the third light emitting portion emits a third compensation emergent light under the control of the third excitation portion, and the fourth light emitting portion emits a fourth compensation emergent light under the control of the fourth excitation portion; wherein the intensity of the first compensation emergent light is greater than or equal to the intensity of the second compensation light, and the intensity of the third compensation emergent light is greater than or equal to the intensity of the fourth compensation light.

[0010] Optionally, the first light emitting part is arranged around the first color light emitting unit, and the second light emitting part is arranged around the first light emitting part; the third light emitting part is arranged around the second color light emitting unit, and the fourth light emitting part is arranged around the third light emitting part; wherein the intensity of the first compensation output light is equal to the intensity of the second compensation light, and the intensity of the third compensation output light is equal to the intensity of the fourth compensation light.

[0011] Optionally, the first light emitting portion is stacked with the second light emitting portion, 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 compensation output light is greater than or equal to the intensity of the second compensation light, and the intensity of the third compensation output light is greater than or equal to the intensity of the fourth compensation light.

[0012] Optionally, the first non-visible light excitation layer is arranged under the first color light-emitting unit, and under the orthographic projection of the substrate, the first non-visible light excitation layer overlaps with the first light emitting layer, the first excitation part and the second excitation part are stacked, the first excitation part is arranged under the second excitation part, and the wavelength of non-visible light emitted by the first excitation part and the second excitation part are different; the second non-visible light excitation layer is arranged under the second color light-emitting unit, and under the orthographic projection of the substrate, the second non-visible light excitation layer overlaps with the second light emitting layer, the third excitation part and the fourth excitation part are stacked, the third excitation part is arranged under the fourth excitation part, and the wavelength of non-visible light emitted by the third excitation part and the fourth excitation part are different.

[0013] Optionally, the display panel further includes a color filter layer, which is disposed on the encapsulation layer, and the color filter layer has a plurality of color filter portions corresponding to the opening areas, and in each of the opening areas, the color of the color filter portion is consistent with the color of the light emitted by the light-emitting unit.

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

[0015] The present application sets a first compensation light source and a second compensation light source in the non-opening area, and the first compensation light source and the second compensation light source compensate the light-emitting units on both sides of the non-opening area respectively. For one side, the first compensation light source emits light from the non-opening area, and the light emitted perpendicular to the direction of the substrate is blocked by the light shielding layer, so that the light emitted by the compensation light source is emitted obliquely from the opening area, thereby forming a compensation light with a certain angle, and realizing brightness compensation of a certain viewing angle for the light-emitting unit close to the first compensation light source. When the display panel needs to display at a wide viewing angle, the light emission under a wide viewing angle is compensated by controlling the compensation light source, and then the adjustment of the wide and narrow viewing angle of the display panel is realized by using the compensation light source, so that people can see the content displayed on the screen clearly under a wide viewing angle, thereby improving the display quality. Moreover, the compensation light emitted by the compensation light source of the present application can be adjusted according to the intensity emitted by the adjacent light-emitting units, so that it can be clearly displayed under different display screens, and the color mixing of the screen caused by the inability to adjust the intensity of the emitted light will not be compensated, which will cause the situation that it cannot be seen clearly under a wide viewing angle. In particular, 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 compensate for different light-emitting units respectively. In particular, 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 compensate for the adjacent light-emitting units respectively, thereby achieving differentiated compensation and realizing a display effect with a variable viewing angle of the display panel in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 is a schematic diagram of a display panel according to a first embodiment of the present application; Figure 2 is a schematic diagram of a pixel of a display panel of the present application; Figure 3 is a schematic diagram of another display panel of the first embodiment of the present application; Figure 4 is a schematic diagram of a display panel according to a second embodiment of the present application; Figure 5 is a schematic diagram of another display panel according to the second embodiment of the present application; Figure 6 is a driving schematic diagram of the first non-visible light excitation layer of the present application; Figure 7 is a schematic diagram of a display device of the present application.

[0017] Among them, 100, display panel; 101, opening area; 102, non-opening area; 110, substrate; 111, pixel definition layer; 112, encapsulation layer; 120, light-emitting unit; 121, first color light-emitting unit; 122, second color light-emitting unit; 130, first compensation light source; 131, first light emitting layer; 1311, first light emitting part; 1312, second light emitting part; 132, first non-visible light excitation layer; 1321, first excitation part; 1322, second excitation unit; 140, second compensation light source; 141, second light emitting layer; 1411, third light emitting unit; 1412, fourth light emitting unit; 142, second non-visible light excitation layer; 1421, third excitation unit; 1422, fourth excitation unit; 150, color filter layer; 151, color filter unit; 152, light shielding layer; R, red sub-pixel; G, green sub-pixel; B, blue sub-pixel; 200, display device; 210, driving circuit. DETAILED DESCRIPTION

[0018] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0019] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. In addition, the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicating orientation or positional relationships are described based on the orientation or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the simplified description of the present application, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on 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 the specific circumstances.

[0020] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0021] Figure 1 is a schematic diagram of a display panel of the first embodiment of the present application, see Figure 1As shown, the present application discloses a display panel 100, the display panel 100 includes a base substrate 110, a pixel definition layer 111, a plurality of light-emitting units 120, a compensation light source, an encapsulation layer 112 and a light shielding layer 152, the pixel definition layer 111 is arranged on the base substrate 110, and a plurality of opening areas 101 are formed, a plurality of light-emitting units 120 are arranged on the base substrate 110, and are located in the opening areas 101, the compensation light source is arranged on the pixel definition layer 111, and is located in the non-opening area 102; the encapsulation layer 112 covers the light-emitting units 120 and is used to seal the light-emitting units 120, the light shielding layer 152 is arranged on the compensation light source, and is located in the non-opening area 102, and is used to shield the light-emitting units 120. The compensation light source is perpendicular to the outgoing light of the base substrate 110, wherein the compensation light source is used to provide the light-emitting unit 120 with compensation outgoing light of a preset angle when two adjacent light-emitting units 120 are displayed, and the area of ​​the compensation outgoing light varies with the luminous 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, and the first compensation light source 130 and the second compensation light source 140 are arranged between the 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.

[0022] The present application arranges the first compensation light source 130 and the second compensation light source 140 in the non-opening area 102, respectively, and the first compensation light source 130 and the second compensation light source 140 compensate the light-emitting units 120 on both sides of the non-opening area 102. For one side, the first compensation light source 130 emits light from the non-opening area 102, and the emitted light perpendicular to the direction of the base substrate 110 is shielded by the light shielding layer 152, so that the light emitted by the compensation light source is emitted obliquely from the opening area 101, thereby forming a compensation emitted light with a certain angle, and realizing brightness compensation of a certain viewing angle for the light-emitting unit 120 close to the first compensation light source 130. When the display panel 100 needs to display at a wide viewing angle, the light emission at a wide viewing angle is compensated by controlling the compensation light source, and then the wide and narrow viewing angles of the display panel 100 are adjusted by using the compensation light source, so that people can clearly see the content displayed on the screen at a wide viewing angle, thereby improving the display quality. Moreover, the compensation light emitted by the compensation light source of the present application can be adjusted according to the intensity emitted by the adjacent light-emitting unit 120, so that it can be clearly displayed under different display screens, and the color mixing of the screen caused by the inability to adjust the intensity of the compensation light will not cause the situation that it cannot be seen clearly under a wide viewing angle. In particular, 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 set in the same non-opening area 102 compensate for different light-emitting units 120 respectively. In particular, 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 compensate for the adjacent light-emitting units 120 respectively, realize differentiated compensation, and realize the display effect of the display panel 100 with a variable viewing angle in a limited space.

[0023] Figure 2 is a schematic diagram of a pixel of a display panel of the present application, see Figure 2As shown, in the display panel 100, one pixel can generally be divided into a plurality of sub-pixels, for example, one pixel can include a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B. Different colors are displayed by different grayscales of the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B. Structurally, each sub-pixel of different colors corresponds to a light-emitting unit 120, and the light emitted by the light-emitting unit 120 corresponding to the sub-pixels of different colors is different. In this case, two adjacent light-emitting units 120 in the non-opening area 102 often emit light of different colors. When a compensation light source is set in the non-opening area 102, since the colors emitted by the two adjacent light-emitting units 120 are different and the brightness (grayscale) is different, the compensation light source cannot adapt to the different colors and brightness of the two light-emitting units 120, resulting in that when brightness compensation is performed on one of the light-emitting units 120, the compensation light is emitted from the opening area 101 of the other light-emitting unit 120, causing interference to the emitted light of the other light-emitting unit 120. The present application arranges two compensation light sources in a non-opening area 102 , and the two compensation light sources compensate two adjacent light-emitting units 120 respectively, so that the compensation light is adapted to different light-emitting brightnesses respectively.

[0024] It is worth mentioning that when the angle between the viewing direction of the human eye and the display screen of the display panel 100 is less than or equal to 60 degrees, the brightness of the emitted light of the pixels of the display panel 100 at the side viewing angle is insufficient, resulting in inaccurate display pixels for the user at the side viewing angle. Therefore, it is necessary to compensate for the emitted light at the side viewing angle. Moreover, under different display grayscales, that is, when the light intensities emitted by the different color light-emitting units 120 of the display panel 100 are different, compensation emitted light of different brightness is required to compensate for the side viewing angle display. Therefore, the preset angle of the compensation emitted light of the preset angle mainly provided in this embodiment is mainly the compensation emitted light at a large viewing angle, which can generally be between 12 degrees and 60 degrees, and the side viewing angle display within this range can be compensated.

[0025] Specifically, the first compensation light source 130 includes a first non-visible light excitation layer 132 and a first light emitting layer 131, and the second compensation light source 140 includes a second non-visible light excitation layer 142 and a second light emitting layer 141, and the first light emitting layer 131 and the second light emitting layer 141 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 respectively 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 132 and the second non-visible light excitation layer 142 are used to emit non-visible light under voltage drive.

[0026] In the present embodiment, a lanthanide metal organic framework material is used that can generate visible light under non-visible light, thereby expanding the display viewing angle. The advantage of the metal organic framework material of the present application is that it is not necessary to provide voltage for driving inside the display panel 100, avoiding the need for complex wiring within the surface. This can be achieved by setting a first light emitting layer 131 in the same layer as the light emitting unit 120 in the non-opening area 102, and setting a corresponding first non-visible light excitation layer 132 and a second non-visible light excitation layer 142 below the second light emission. It is easy to implement by setting the compensation light source in the non-opening area 102, for example, on the pixel definition layer 111 or other positions, and a small space can be occupied to set the compensation light source. Compared with the solution in 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 need to occupy too much area, and there is no need to improve the non-opening position in the pixel. However, due to the area occupied by the device of the light-emitting unit 120, when the light-emitting unit 120 is used in the non-opening area 102, the position of the opening needs to be squeezed, so that when the original three sub-pixels form one pixel, the compensation sub-pixel will also occupy an area within one pixel, so that four sub-pixels need to be set, resulting in a reduction in the opening area and causing display problems.

[0027] The first light emitting layer 131 and the second light emitting layer 141 emit light of different colors.

[0028] Specifically, the metal organic framework material is a porous material formed by self-assembly of metal ions and organic ligands. Both metal ions and organic ligands can serve as potential luminescent centers, and the pores of MOFs can also load luminescent objects. The metal organic framework material in this embodiment can emit monochromatic or polychromatic light. Under the excitation of invisible light, the colors of the light emitted by adding different organic ligands or metal ions are 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) are first assembled into a ribbon structure through the anisotropic growth of metal ions and organic ligands, and then these nanobelts are entangled and gelled to form MOF gel. By adjusting the type and / or ratio 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 different colors of emission, thereby achieving multi-color control under the same wavelength excitation. At the same time, by changing the type and proportion of ions, emission of the same color at different wavelengths can be achieved.

[0029] The metal organic framework material in this embodiment is mainly a lanthanide metal organic framework material, which has the characteristic of luminescence under non-visible light excitation, and has multiple 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, passes through the gap to the triplet state, and the triplet state sensitizes the lanthanide ions to achieve antenna effect luminescence. Among them, to achieve simultaneous luminescence of ligands and metal ions, the energy transfer efficiency of ligands to europium ions can be regulated by introducing boric acid groups on terephthalic acid, and the ligands and metal ions are used to emit light simultaneously. The boric acid group has a strong affinity for fluoride ions and H2O2, and the ratio-type luminescence sensing and visual detection of fluoride ions and H2O2 are achieved. Different from regulating energy transfer, the aggregation-induced emission ligands and lanthanide ions are used to prepare MOFs, and the luminescence is enhanced by limiting the intramolecular rotation of the ligands by coordination, and the luminescence is combined with the antenna effect of the europium ions to achieve simultaneous enhancement of the luminescence of the ligands and europium ions. For example, by adjusting the ratio of lanthanide ions and ligands, taking Ln-MOF[TbxEu1-x (TCBA)(H2O)]2·DMF as an example, 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 ratio of Eu (III) and Tb (III) and Gd (III) can be adjusted to change the luminescence color, that is, different colors of luminescent MOFs can be achieved by combining different ligands and metal ions. The ligands used in host-guest simultaneous luminescence, mixed metal simultaneous luminescence and mixed MOFs are generally different from metal ions. For host-guest simultaneous luminescence, Ru@MIL-NH2 material is taken as an example. Ru(bpy) 32+ has red fluorescence and MIL-NH2 has blue fluorescence, which realizes blue-red host-guest luminescence under a single excitation of 300nm. Mixed metal simultaneous luminescence can be easily prepared by using Ln3+ ions with similar atomic radius and coordination mode, and by adjusting the ratio of Ln3+ ions. The red, green and blue luminescence of Eu3+, Tb3+ and Dy3+ are used. Mixed MOFs simultaneous luminescence uses Eu3+ and Tb3+ as metal nodes, and reacts with 2,5-dicarboxylic acid phenylboronic acid to prepare red light Eu-MOFs and green light Tb-MOFs respectively, and prepares three primary colors MOFs ink together with blue light UiO-66-NH2.

[0030] In addition to the four luminescence paradigms mentioned above for realizing multi-luminescent lanthanide metal organic framework materials, 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 ratio of Eu (III) and Tb (III), Gd (III), the ratio of Eu3+, Tb3+ and Dy3+, etc., the wavelength of invisible light can be selected between 250nm and 350nm, so that lanthanide metal organic framework materials of different materials have different luminescent colors. In this embodiment, the lanthanide metal organic framework material is mainly used to 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.

[0031] 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. The color of the light emitted by the second color light emitting unit 122 is one of red, green or blue. 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. In the same non-opening area 102, the first light emitting layer 131 is arranged close to the first color light emitting unit 121, and the second light emitting layer 141 is arranged close to the second color light emitting unit 122. The color of the light emitted by the first light emitting layer 131 is consistent with 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 consistent with the color of the light emitted by the second color light emitting unit 122.

[0032] In this embodiment, the first light emitting layer 131 and the second light emitting layer 141 can achieve different colors of light emission by adjusting different lanthanide metal organic framework materials, thereby achieving 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, and 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.

[0033] It is worth mentioning that since the display panel 100 generally has three colors of light-emitting units 120, and the compensation light source of the present application is arranged between two adjacent light-emitting units 120 of 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 corresponding to different positions. In other words, the colors of the first light emitting layer 131 and the second light emitting layer 141 of the present embodiment at different positions of the non-opening area 102 are different, mainly depending on the colors emitted by the light-emitting units 120 on both sides of the non-opening area 102. The present embodiment defines the first light emitting layer 131 and the second light emitting layer 141 in the same non-opening area 102, and the "first" and "second" are only used to distinguish the positions of the light emitting layers, which are respectively close to the first color light-emitting unit 121 and close to the second color light-emitting unit 122.

[0034] Figure 3 is a schematic diagram of another display panel of the first embodiment of the present application, see 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 a color filter portion 151 corresponding to the opening area 101. In each of the opening areas 101, the color of the color filter portion 151 is consistent with the color of the light emitted by the light emitting unit 120. Generally speaking, the color filter portion 151 includes a red filter portion, a green filter portion and a blue filter portion. The positions of three adjacent color filter portions 151 of different colors can form a pixel, which are respectively called red sub-pixel R, green sub-pixel G and blue sub-pixel B. By controlling the luminous intensity of the light emitting unit 120 at the corresponding positions of the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B, the amount of light passing through the red filter portion, the green filter portion and the blue filter portion changes, thereby realizing color display within the pixel. Any color can be formed in one pixel, that is, different colors can be displayed by controlling the grayscale of the red sub-pixel R, the grayscale of the green sub-pixel G, and the grayscale of the blue sub-pixel B. Moreover, in this embodiment, the above-mentioned light shielding layer 152 can be formed on the same layer as the color filter portion 151, and the black matrix in the color filter layer 150 is used as the light shielding layer 152.

[0035] In this embodiment, after the color filter layer 150 is provided, due to the filtering effect of the color filter portion 151, when the light emitted by 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 the adjacent light emitting unit 120 is reduced in the case of light compensation.

[0036] Specifically, combined Figures 2 to 3 As shown, 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 .

[0037] 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 viewing angle of the first color light emitting unit 121. The side viewing angle of the circle includes four directions of side viewing angles, namely, up, down, left, and right, and the light emitted by the first light emitting layer 131 can be seen. Compared with only disposing one color compensation light source in the non-opening area 102, the light compensation effect is greatly improved.

[0038] Figure 4 is a schematic diagram of a display panel of the second embodiment of the present application, see Figure 4 As shown, the first light emitting layer 131 includes a first light emitting part 1311 and a second light emitting part 1312, the second light emitting layer 141 includes a third light emitting part 1411 and a fourth light emitting part 1412, the first non-visible light excitation layer 132 includes a first excitation part 1321 and a second excitation part 1322, and the second non-visible light excitation layer 142 includes a third excitation part 1421 and a fourth excitation part 1422; the first light emitting part 1311 emits a first compensation output light under the control of the first excitation part 1321, and the second light emitting part 1312 emits a second compensation output light under the control of the second excitation part 1322; the third light emitting part 1411 emits a third compensation output light under the control of the third excitation part 1421, and the fourth light emitting part 1412 emits a fourth compensation output light under the control of the fourth excitation part 1422.

[0039] In this embodiment, the first light emitting layer 131 includes a first light emitting portion 1311 and a second light emitting portion 1312. The first light emitting layer 131 is not limited to only two light emitting portions. This solution mainly considers that when displaying high grayscale and low grayscale, if the light-emitting units 120 with different display grayscales have the same compensation light, the low grayscale side viewing angle will be brighter and the high grayscale side viewing angle will be darker. Therefore, in this embodiment, it is necessary to distinguish the light compensation of the side viewing angles of high grayscale and low grayscale. For example, at high grayscale, the compensation light brightness is greater, and at low grayscale, the compensation brightness is smaller, so as to achieve a better compensation effect.

[0040] In this solution, the first light emitting unit 1311 and the second light emitting unit 1312 are mainly controlled by the non-visible light emitted by the first excitation unit 1321 and the second excitation unit 1322 to work simultaneously or separately, so as to achieve at least two steps of light compensation brightness. Of course, more steps of brightness compensation can also be achieved by continuing to increase the number of light emitting units. Among them, the third light emitting unit 1411 and the fourth light emitting unit 1412 are controlled in the same way as the first and second emitting units to achieve light compensation for the second color light emitting unit 122.

[0041] Specifically, the intensity of the first compensation emergent light is greater than or equal to the intensity of the second compensation light, and the intensity of the third compensation emergent light is greater than or equal to the intensity of the fourth compensation light.

[0042] In this solution, the brightness of the first light emitting part 1311 and the second light emitting part 1312 can be the same or different. When the brightness of the first light emitting part 1311 and the second light emitting part 1312 is the same, it is necessary to control the first light emitting part 1311 and the second light emitting part 1312 to be turned on simultaneously or individually to achieve different compensation brightness. When the brightness of the first light emitting part 1311 and the second light emitting part 1312 is set to be different, multi-step brightness compensation can be achieved by individually controlling the first light emitting part 1311 or the second light emitting part 1312 to be turned on or off.

[0043] Specifically, taking the case 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 compensation emitted light is greater than the intensity of the second compensation emitted light. When the luminous intensity of the light emitting unit 120 is in the first range, the second light emitting part 1312 works, and when the luminous intensity of the light emitting unit 120 is in the second range, the first light emitting part 1311 works. For example, when the display panel 100 displays in 256 grayscales, the display pixels of 0 to 127 grayscales can be configured as the second light emitting part 1312 to work, and the display pixels of 128 to 255 grayscales can be configured as the first light emitting part 1311 to work, so that low grayscale display is compensated by the second light emitting part 1312, and high grayscale display is compensated by the first light emitting part 1311.

[0044] Generally speaking, the first light emitting unit 1311 and the second light emitting unit 1312 need to be controlled according to the grayscale displayed by the adjacent light emitting unit 120. Of course, they can also be controlled in different regions, or according to the overall value of the grayscale displayed. For example, when more than half of the pixels of the current display screen are displayed at a high grayscale, the first light emitting unit 1311 is controlled to work, and when more than half of the pixels of the current display panel 100 are displayed at a low grayscale, the second light emitting unit 1312 is controlled to work. Although the above overall value control method is not so precise and accurate, it is more feasible and has a significant effect on improving the side viewing angle.

[0045] In one embodiment, the first light emitting portion 1311 is arranged around the first color light emitting unit 121, and the second light emitting portion 1312 is arranged around the first light emitting portion 1311; the third light emitting portion 1411 is arranged around the second color light emitting unit 122, and the fourth light emitting portion 1412 is arranged around the third light emitting portion 1411; wherein the intensity of the first compensation output light is equal to the intensity of the second compensation light, and the intensity of the third compensation output light is equal to the intensity of the fourth compensation light.

[0046] In this embodiment, taking the first light emitting layer 131 as an example, the first light emitting part 1311 and the second light emitting part 1312 are arranged in the same layer. By arranging the first light emitting part 1311 and the second light emitting part 1312 in the same layer, different viewing angle compensations can be obtained when the first light emitting part 1311 or the second light emitting part 1312 is turned on separately. Since the second light emitting part 1312 is arranged on the side of the first light emitting part 1311 away from the first color light emitting unit 121, the inclination angle of the light emitted by the second light emitting part 1312 is larger, so as to achieve light compensation at a larger angle. In this embodiment, the switching compensation of different viewing angles can be achieved by switching the first light emitting part 1311 and the second light emitting part 1312 to work simultaneously or separately.

[0047] Figure 5 is a schematic diagram of another display panel of the second embodiment of the present application, see Figure 5 As shown, in another embodiment, the first light emitting portion 1311 is stacked with the second light emitting portion, and the first light emitting portion 1311 is arranged under the second light emitting portion 1312; the third light emitting portion 1411 is stacked with the fourth light emitting portion 1412, and the third light emitting portion 1411 is arranged under the fourth light emitting portion 1412; the intensity of the first compensation output light is greater than or equal to the intensity of the second compensation light, and the intensity of the third compensation output light is greater than or equal to the intensity of the fourth compensation light.

[0048] In this embodiment, considering that the display panel 100 generally has multiple grayscales from 0 to 255, when the display panel 100 uses different grayscales for display, the present application realizes light compensation of different intensities by stacking the first light emitting unit 1311 and the second light emitting unit 1312. For example, when the intensity of the first compensation output light is equal to the intensity of the second compensation light, the number of light emitting units can be controlled to realize step-by-step brightness compensation. And by setting a plurality of light emitting units, multi-gradient compensation can be realized. For example, when the intensity of the first compensation output light is greater than the intensity of the second compensation light, the first light emitting unit 1311 and the second light emitting unit 1312 can be individually controlled to emit light individually and simultaneously, thereby realizing light compensation of at least three steps. It can be understood that when the number of light emitting units increases, the number of non-visible light excitation layers can be simultaneously increased to synchronize the control of the light emitting units. When there is enough space in the non-opening area 102, when multiple light emitting parts are set, the first light emitting part 1311 and the second light emitting part 1312 can be set in the same layer or stacked to achieve multi-step and multi-angle light compensation.

[0049] Specifically, the first non-visible light excitation layer 132 and the second non-visible light excitation layer 142 can be arranged by arranging the first non-visible light excitation layer 132 under the first color light emitting unit 121. Under the orthographic projection of the base substrate 110, the first non-visible light excitation layer 132 overlaps with the first light emitting layer 131, the first excitation portion 1321 and the second excitation portion 1322 are stacked, the first excitation portion 1321 is arranged under the second excitation portion 1322, and the first excitation portion 1321 overlaps with the second excitation portion 1322. The wavelength of non-visible light emitted by the excitation unit 1322 is different; the second non-visible light excitation layer 142 is arranged under the second color light-emitting unit 122, and under the orthographic projection of the base substrate 110, the second non-visible light excitation layer 142 overlaps with the second light emitting layer 141, the third excitation unit 1421 and the fourth excitation unit 1422 are stacked, and the third excitation unit 1421 is arranged under the fourth excitation unit 1422, and the wavelengths of non-visible light emitted by the third excitation unit 1421 and the fourth excitation unit 1422 are different.

[0050] Figure 6 is a driving schematic diagram of the first non-visible light excitation layer of the present application, combined 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 in the same layer, and can be located between the base substrate 110 and the light-emitting unit 120 or on the side of the base substrate 110 away from the light-emitting unit 120. Specifically, taking the first non-visible light excitation layer 132 as an example, for the driving of the first excitation portion 1321 and the second excitation portion 1322, it is necessary to keep the corresponding light-emitting unit 120 displayed or turned off at the same time. The first excitation portion 1321 and the second excitation portion 1322 need to be driven by two electrodes respectively, but considering that the first excitation portion 1321 and the second excitation portion 1322 are stacked, the first excitation portion 1321 and the second excitation portion 1322 can share an electrode, and then drive by controlling another electrode of the first excitation portion 1321 and the second excitation portion 1322, and the other electrode is taken as an example in which the first excitation portion 1321 is the first electrode and the second excitation portion 1322 is the second electrode. The first excitation part 1321 is driven by a first active switch, and the second excitation part 1322 is driven by a 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 grayscale of the display screen. It is worth mentioning that a first excitation portion 1321 and a second excitation portion 1322 can be set as a whole 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 portion 1311 and the second light emitting portion 1312 arranged around the non-opening area 102 around the light-emitting unit 120 are controlled by the same first excitation portion 1321 and the second excitation portion 1322, thereby reducing the difficulty of the process.

[0051] Figure 7 is a schematic diagram of the display device of the present application, see Figure 7 As shown, the present application further discloses a display device, wherein the display device 200 includes a driving circuit 210 and a display panel 100 in any one of the above embodiments, and the driving circuit 210 is used to drive the display panel 100 to display.

[0052] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the application document is limited in length and cannot be listed one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0053] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present 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, and 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.

2. The display panel according to claim 1, characterized in that: 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 light emitting layer and the second light emitting layer emit light of different colors; The first non-visible light excitation layer and the second non-visible light excitation layer are used to emit non-visible light under voltage driving.

3. The display panel according to claim 2, characterized in that: 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. 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.

4. The display panel according to claim 3, characterized in that: The first light emitting layer is disposed around the first color light emitting unit, and the second light emitting layer is disposed around the second color light emitting unit.

5. The display panel according to claim 4, characterized in that: 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 compensation light is greater than or equal to the intensity of the second compensation light, and the intensity of the third compensation light is greater than or equal to the intensity of the fourth compensation light.

6. The display panel according to claim 5, 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 light, and the intensity of the third compensating emergent light is equal to the intensity of the fourth compensating light.

7. The display panel according to claim 5, 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 light, and the intensity of the third compensating emergent light is greater than or equal to the intensity of the fourth compensating light.

8. The display panel according to claim 5, 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.

9. The display panel according to claim 4, 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.

10. A display device, characterized in that: It comprises a driving circuit and the display panel according to any one of claims 1 to 9, wherein the driving circuit is used to drive the display panel to display.

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