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 and a packaging layer, the pixel definition layer is arranged on the substrate and forms a plurality of opening areas, the light-emitting units are arranged on the substrate and located in the opening areas, and the packaging layer is arranged between the pixel definition layer and the light-emitting units. Every two adjacent light emitting units are separated through the corresponding pixel definition layer. The packaging layer is arranged on the light-emitting unit and is used for sealing the light-emitting unit; wherein the display panel further comprises a blue light compensation layer and a compensation excitation layer, and the blue light compensation layer is used for emitting blue light under the control of the compensation excitation layer. By arranging the blue light compensation layer, the problem that the display panel becomes yellow due to attenuation of the blue light-emitting material is compensated, and the display effect of the display panel is improved.

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] As a self-luminous display technology, organic light-emitting OLED is increasingly being used in products. The organic light-emitting unit emits visible light by migrating electrons and holes to the light-emitting layer under the drive of an electric field, thereby achieving active light emission. However, since OLED materials are a type of material whose brightness decreases over time, especially the life of blue light-emitting materials decreases faster than red and green light-emitting materials. As a result, after a certain period of use, the blue light-emitting area of ​​the OLED display panel becomes weak, causing the display panel to turn yellow.

[0003] At present, it is generally necessary to increase the area of ​​blue pixels in OLED display panels to enhance blue light and avoid the problem of yellowing caused by rapid attenuation of blue light-emitting materials. However, the above method will cause the area of ​​other pixels such as red and green to shrink, and there will also be a problem of reduced brightness after the blue light-emitting material decays. Summary of the invention

[0004] The purpose of the present application is to provide a display panel and a display device, which compensates for the yellowing problem of the display panel caused by the attenuation of the blue luminescent material of the display panel by setting a blue light compensation layer, thereby improving the display effect of the display panel.

[0005] The present application discloses a display panel, which includes a base substrate, a pixel definition layer, a plurality of light-emitting units and an encapsulation layer. The pixel definition layer is arranged on the base substrate and forms a plurality of opening areas. The plurality of light-emitting units are arranged on the base substrate and located in the opening areas. Two adjacent light-emitting units are separated by the pixel definition layer. The encapsulation layer is arranged on the light-emitting units and is used to seal the light-emitting units. The display panel also includes a blue light compensation layer and a compensation excitation layer. The blue light compensation layer is used to emit blue light under the control of the compensation excitation layer.

[0006] Optionally, the blue light compensation layer is formed of a metal organic framework material, and the metal organic framework material includes a lanthanide metal organic framework material; the compensation excitation layer is used to emit invisible light, and the blue light compensation layer is used to generate blue visible light under the excitation of invisible light.

[0007] Optionally, the light-emitting unit includes a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and the blue light compensation layer is arranged around the blue light-emitting unit and surrounds the blue light-emitting unit.

[0008] Optionally, the blue light compensation layer is arranged in the same layer as the blue light emitting unit; the compensation excitation layer is arranged under the blue light compensation layer to provide invisible light for the blue light compensation layer.

[0009] Optionally, the blue light-emitting unit includes a bottom electrode, a blue light-emitting layer and a top electrode; the blue light-emitting layer is arranged on the bottom electrode, and the top electrode is arranged on the blue light-emitting layer; the blue light compensation layer is arranged on the same layer as the bottom electrode, the blue light compensation layer is arranged under the pixel definition layer, and extends to the adjacent light-emitting unit; the compensation excitation layer is arranged under the bottom electrode.

[0010] Optionally, the display panel also includes a color filter layer, the color filter layer includes a black matrix and a plurality of color filter portions, the black matrix is ​​arranged in a non-opening area, and the color filter portion is arranged in the opening area; in the non-opening area adjacent to the blue light-emitting unit, a blue light compensation layer is arranged on the pixel definition layer, a window is arranged on the black matrix, and the blue light compensation layer emits light from the window.

[0011] Optionally, the light-emitting unit includes a red light-emitting unit and a green light-emitting unit, the display panel also includes red pixels, blue pixels and green pixels, the red light-emitting unit is set corresponding to the red pixel, the green light-emitting unit is set corresponding to the green pixel, and the blue light compensation layer is set corresponding to the blue pixel.

[0012] Optionally, the compensation excitation layer is arranged on the same layer as the red light-emitting unit and the green light-emitting unit, the compensation excitation layer includes a first electrode, an excitation light source layer and a second electrode, the red light-emitting unit includes a bottom electrode, a red light-emitting layer and a top electrode, the green light-emitting unit includes a bottom electrode, a green light-emitting layer and a top electrode, the first electrode is arranged on the same layer as the bottom electrode of the red light-emitting unit and the bottom electrode of the green light-emitting unit, the second electrode is connected to the top electrode of the red light-emitting unit and the top electrode of the green light-emitting unit; the blue light compensation layer is arranged between the excitation light source layer and the second electrode.

[0013] Optionally, the area of ​​the blue pixel is larger than the area of ​​the red pixel or the green pixel.

[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 blue light compensation layer in the display panel, and the blue light compensation layer emits blue light under the control of the compensation excitation layer. When the blue light of the display panel is attenuated, the blue light of the display panel can be compensated under the control of the compensation excitation layer, thereby avoiding the problem of yellowing of the display. The advantage of the present application is that, through the action of the blue light compensation layer, the blue light is compensated when the blue light is attenuated, and when the blue light is not attenuated, the compensation excitation layer can be controlled not to work, so that no blue light is generated, thereby avoiding the problem of excessive blue light in normal display. 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:

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

[0018] Figure 2 is a schematic diagram of a display panel according to a second embodiment of the present application;

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

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

[0021] Figure 5 is a schematic diagram of a display device of the present application.

[0022] Among them, 100, display panel; 101, opening area; 102, non-opening area; 110, base substrate; 111, pixel driving layer; 112, pixel definition layer; 113, encapsulation layer; 120, light-emitting unit; 120R, red light-emitting unit; 120G, green light-emitting unit; 120B, blue light-emitting unit; 121, bottom electrode, 122R, red light-emitting layer; 122G, green light-emitting layer; 122B, blue light-emitting layer; 123, top electrode; 130, blue light compensation layer; 131, compensation excitation layer; 132, first electrode; 133, excitation light source layer; 134, second electrode; 140, color filter layer; 141, black matrix; 142, color filter part; 143, window; 200, display device; 210, driving circuit. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0026] Figure 1 is a schematic diagram of a display panel of the first embodiment of the present application, see Figure 1 As shown, the present application discloses a display panel, wherein the display panel 100 includes a base substrate 110, a pixel definition layer 112, a plurality of light-emitting units 120 and an encapsulation layer 113, wherein the pixel definition layer 112 is disposed on the base substrate 110 and forms a plurality of opening areas 101, wherein the plurality of light-emitting units 120 are disposed on the base substrate 110 and are located in the opening areas 101, and two adjacent light-emitting units 120 are separated by the pixel definition layer 112; wherein the encapsulation layer 113 is disposed on the light-emitting unit 120 and is used to seal the light-emitting unit 120; wherein the display panel 100 further includes a blue light compensation layer 130 and a compensation excitation layer 131, wherein the blue light compensation layer 130 is used to emit blue light under the control of the compensation excitation layer 131.

[0027] The present application sets a blue light compensation layer 130 in the display panel 100, and the blue light compensation layer 130 emits blue light under the control of the compensation excitation layer 131. When the blue light of the display panel 100 is attenuated, the blue light of the display panel 100 can be compensated under the control of the compensation excitation layer 131, thereby avoiding the problem of yellowing of the display. The advantage of the present application is that, through the action of the blue light compensation layer 130, the blue light is compensated when the blue light is attenuated, and when the blue light is not attenuated, the compensation excitation layer 131 can be controlled not to work, so that no blue light is generated, thereby avoiding the problem of excessive blue light in normal display.

[0028] Specifically, the blue light compensation layer 130 is formed of a metal organic framework material, and the metal organic framework material includes a lanthanide metal organic framework material; the compensation excitation layer 131 is used to emit invisible light, and the blue light compensation layer 130 is used to generate blue visible light under the excitation of invisible light.

[0029] The method adopted in this application is the method in which metal organic framework materials (MOFs) produce visible light under the excitation of invisible light. Specifically, metal organic framework materials are porous materials formed by self-assembly of metal ions and organic ligands. Both metal ions and organic ligands can serve as potential luminescence centers, and the pores of MOFs can also load luminescent objects. The metal organic framework material in this embodiment can emit monochromatic light or polychromatic light. Under the excitation of invisible light, the colors of light emitted by adding different organic ligands or metal ions are also different.

[0030] Specifically, the metal organic framework material in this embodiment is mainly a lanthanide metal organic framework material, and the lanthanide metal organic framework material 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, lanthanide metal ions 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, the ligand and the metal ion emit light at the same time, and the energy transfer efficiency of the ligand to the europium ion can be regulated by introducing a boric acid group on terephthalic acid, and the ligand and the metal ion emit light at the same time to construct multi-luminescent MOFs. The boric acid group has a strong affinity for fluoride ions and H2O2, which realizes the ratio-type luminescence sensing and visual detection of fluoride ions and H2O2. Different from regulating energy transfer, MOFs are prepared by combining aggregation-induced luminescence ligands with lanthanide ions, 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 europium ions to achieve simultaneous enhancement of luminescence of ligands and europium ions. For example, by adjusting the ratio of lanthanide ions and ligands, Ln-MOF[TbxEu1-x(TCBA)(H2O)]2·DMF is taken as an example, where Eu(III) is characterized by emitting red light, Tb(III) is characterized by emitting green light, and Gd(III) is characterized by emitting blue light. The ratio of Eu(III), Tb(III) and Gd(III) can be adjusted to change the luminescence color. In this embodiment, Gd(III) can be added to emit blue light with an excitation wavelength of about 300n to 350nm.

[0031] The simultaneous luminescence of the host and the guest can be achieved by adding red-emitting tri(2,2'-bipyridyl)ruthenium(II) (Ru(bpy)32+) to the precursor of MIL-NH2, and Ru@MIL-NH2 can be prepared by a one-pot method. Among them, 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. Of course, it is also possible to add only MIL-NH2 ligands to achieve blue light emission alone. The simultaneous luminescence of mixed metals can be achieved by using Ln3+ ions with similar atomic radius and coordination mode, and by adjusting the ratio of Ln3+ ions, mixed lanthanide metal MOFs can be easily prepared. Using the red, green and blue luminescence of Eu3+, Tb3+ and Dy3+, combined with the principle of three primary colors, mixed metal MOFs that emit white light under 275nm excitation are prepared. 2,5-dicarboxylic phenylboronic acid can react with Ln3+ ions in a hydrothermal reaction under normal pressure to form MOF gel. By adjusting the ratio of Eu3+, Tb3+ and Dy3+, mixed metal MOF gels with different luminescence can be obtained. Using different colors of luminescence under 275nm excitation, colorful luminescence is achieved through MOF gel. Mixed MOFs emit light simultaneously. Using Eu3+ and Tb3+ as metal nodes, they react with 2,5-dicarboxylic phenylboronic acid to prepare red light Eu-MOFs and green light Tb-MOFs respectively. Together with blue light UiO-66-NH2, three primary color MOFs ink is prepared, which can display multiple colors under a single excitation of 275nm.

[0032] 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, the wavelength of invisible light can be selected between 250nm and 350nm, so that lanthanide metal organic framework materials of different materials have different luminescence colors. In this embodiment, the lanthanide metal organic framework material can be adjusted to emit blue light.

[0033] It is worth mentioning that the lanthanide metal organic framework material in this embodiment can be formed on the base substrate 110 by coating or printing. The blue light compensation layer 130 in this embodiment is mainly controlled by the compensation excitation layer 131 to emit light, and no additional driving layer is required for the blue light compensation layer 130, so that the blue light compensation layer 130 can emit blue light.

[0034] Specifically, the display panel 100 further includes a pixel driving layer 111, which is disposed on the base substrate 110 and under the light emitting unit 120. The pixel driving layer 111 mainly forms thin film transistors, data lines, scanning lines, etc. that drive the light emitting unit 120 to emit light by disposing multiple metal layers and multiple insulating layers, thereby realizing array driving of the light emitting unit 120. Each light emitting unit 120 in this embodiment has a separate driving circuit, and emits light under the drive of the scanning line and the data line.

[0035] In this embodiment, taking the three-primary-color RGB display panel 100 as an example, the light-emitting unit 120 generally includes a red light-emitting unit 120R, a blue light-emitting unit 120B, and a green light-emitting unit 120G. Correspondingly, the opening area 101 where the red light-emitting unit 120R is located is a red pixel, the opening area 101 where the green light-emitting unit 120G is located is a green pixel, and the opening area 101 where the blue light-emitting unit 120B is located is a blue pixel. Generally speaking, a red pixel, a blue pixel, and a green pixel adjacent to each other form a pixel group, and the pixel group can display any color by adjusting the ratio of red, green, and blue. The red light-emitting unit 120R, the green light-emitting unit 120G and the blue light-emitting unit 120B respectively include structures such as the top electrode 123, the bottom electrode 121 and the light-emitting layer. Due to the different materials used for the light-emitting layer, the red light-emitting unit 120R is generally a red light-emitting layer 122R, the blue light-emitting unit 120B is generally a blue light-emitting layer 122B, and the green light-emitting unit 120G is generally a green light-emitting layer 122G, so that light-emitting units 120 of different colors can emit light of different colors. In addition to the bottom electrode 121, the top electrode 123 and the light-emitting layer, it generally includes an electron injection layer, an electron transport layer, a hole blocking layer, an electron blocking layer, a hole transport layer and a hole injection layer. Under the voltage drive of the bottom electrode 121 and the top electrode 123, electrons and holes are respectively injected from the cathode and the anode into the electron transport layer and the hole transport layer, and finally migrate to the light-emitting layer. When electrons and holes meet in the light-emitting layer, excitons are formed, which excite the light-emitting molecules, and the latter emit visible light after radiation. Since the blue light emitting material decays faster, especially compared with the red light emitting material and the green light emitting material, the life of the blue light emitting material in mass production is generally 20,000 hours at LT50 / 1000 candela brightness. In other words, after 20,000 hours, the brightness of the blue light emitting unit 120 will drop by 50%. Therefore, the blue light compensation layer 130 in this embodiment can be used to compensate for the blue light after the blue light emitting unit 120B decays.

[0036] Specifically, the blue light compensation layer 130 is arranged around the blue light emitting unit 120B, surrounding the blue light emitting unit 120B. In this embodiment, the blue light compensation layer 130 is mainly used to emit blue light, so it needs to be arranged around the blue light emitting unit 120B to compensate for the emitted light of the blue light emitting unit 120B. In this embodiment, under the orthographic projection of the base substrate 110, the blue light compensation layer 130 does not overlap with the light emitting layer of the adjacent light emitting unit 120.

[0037] In order to ensure the luminous efficiency of the pixels during the design of the current OLED display panel 100, generally speaking, the area of ​​the luminous layer is slightly larger than the bottom electrode 121. Therefore, in this embodiment, the blue light compensation layer 130 is arranged around the blue light emitting unit 120B, specifically around the bottom electrode 121 and the blue light emitting layer 122B, and the compensation excitation layer 131 is arranged below the bottom electrode 121. The luminescence control of the blue light compensation layer 130 is achieved by controlling the compensation excitation layer 131.

[0038] Specifically, the blue light compensation layer 130 is arranged in the same layer as the blue light emitting unit 120B; the compensation excitation layer 131 is arranged under the blue light compensation layer 130, and is used to provide invisible light for the blue light compensation layer 130. In this embodiment, the blue light compensation layer 130 and the blue light emitting layer 122B of the blue light emitting unit 120B have the same projection area on the base substrate 110, and the blue light is compensated by arranging the blue light compensation layer 130 in the area where the blue light emitting layer 122B exceeds the bottom electrode 121. It can be understood that in this embodiment, the blue light emitted by the blue light compensation layer 130 is still emitted by the opening area 101 corresponding to the blue light emitting unit 120B, that is, the blue light is emitted after passing through the blue light emitting layer 122B and the top electrode 123. Relatively speaking, due to the small area difference between the blue light emitting layer 122B and the bottom electrode 121 in the opening area 101, the area of ​​the blue light compensation layer 130 is also small, resulting in limited compensation capability.

[0039] Figure 2 is a schematic diagram of a display panel of the second embodiment of the present application, see Figure 2 As shown, in a specific embodiment, the blue light compensation layer 130 can also be disposed under the pixel definition layer 112, so that the blue light compensation layer 130 extends to the non-opening area 102 and extends to the edge of the adjacent light emitting unit 120. On the orthographic projection of the base substrate 110, the edge of the blue light compensation layer 130 exceeds the edge of the blue light emitting layer 122B, thereby forming a larger area of ​​the blue light compensation layer 130.

[0040] Furthermore, the blue light-emitting unit 120B includes a bottom electrode 121, a blue light-emitting layer 122B and a top electrode 123; the blue light-emitting layer 122B is arranged on the bottom electrode 121, and the top electrode 123 is arranged on the blue light-emitting layer 122B; the blue light compensation layer 130 is arranged on the same layer as the bottom electrode 121, the blue light compensation layer 130 is arranged under the pixel definition layer 112, and extends to the adjacent light-emitting unit 120; the compensation excitation layer 131 is arranged under the bottom electrode 121.

[0041] The compensation excitation layer 131 can be controlled to emit invisible light through the electrode of the pixel driving layer 111. Of course, the electrode driving the compensation excitation layer 131 can also share the bottom electrode 121 of the blue light-emitting unit 120B to control the compensation excitation layer 131. The advantage is that there is no need to set an additional driving timing, and compensation is performed when the blue light-emitting unit 120B is working, and when the blue pixel is not displaying, the blue pixel is not compensated.

[0042] It is worth mentioning that in this embodiment, the blue light compensation layer 130 at different positions of the blue light-emitting unit 120B can be individually controlled by the compensation excitation layer 131 below, or it can be controlled by partition. Relatively speaking, the control complexity of the compensation excitation layer 131 required for the partition control will be smaller, but it is easy for the blue light compensation layer 130 to emit light when some blue pixels do not emit light, resulting in slight light leakage. Although the method of controlling each blue light compensation layer 130 individually is more complicated, there will be no light leakage problem. And by sharing the bottom electrode 121 or the top electrode 123 with the corresponding blue light-emitting unit 120B, it is possible to achieve synchronous control of the blue light compensation layer 130 and the blue light-emitting unit 120B to emit light or not emit light at the same time.

[0043] Specifically, when the blue light compensation layer 130 is disposed in the non-opening area 102 , since the non-opening area 102 is generally not used for display, the blue light emitted by the blue light compensation layer 130 cannot be emitted from the non-opening area 102 . Therefore, further improvements need to be made to the non-opening area 102 .

[0044] In which, the display panel 100 also includes a color filter layer 140, and the color filter layer 140 includes a black matrix 141 and a plurality of color filter portions 142, the black matrix 141 is arranged in the non-opening area 102, and the color filter portion 142 is arranged in the opening area 101; in the non-opening area 102 adjacent to the blue light-emitting unit 120B, a blue light compensation layer 130 is arranged on the pixel definition layer 112, and a window 143 is arranged on the black matrix 141, and the blue light compensation layer 130 emits light from the window 143.

[0045] In this embodiment, the black matrix 141 is opened again to allow the outgoing light of the blue light compensation layer 130 to be emitted, so as to compensate for the blue light and improve the compensation capability for the blue light. Relatively speaking, the area of ​​the blue pixel is actually increased, but the area of ​​the red pixel and the blue pixel is not squeezed.

[0046] In another embodiment, the blue light compensation layer 130 can also be disposed on the pixel definition layer 112. For example, a groove is disposed on the pixel definition layer 112, and the blue light compensation layer 130 is disposed in the groove. Similarly, a window 143 is disposed in the non-opening area 102 to achieve compensation for blue light.

[0047] Figure 3 is a schematic diagram of a display panel of the third embodiment of the present application, see Figure 3 As shown, based on the above embodiment, this embodiment further improves the blue light emitting unit 120B by removing the blue light emitting unit 120B and replacing the blue light emitting unit 120B by means of a compensation excitation layer 131 and a blue light compensation layer 130 .

[0048] Specifically, the light emitting unit 120 includes a red light emitting unit 120R and a green light emitting unit 120G, the display panel 100 also includes a red pixel, a blue pixel and a green pixel, the red light emitting unit 120R is arranged corresponding to the red pixel, the green light emitting unit 120G is arranged corresponding to the green pixel, and the blue light compensation layer 130 is arranged corresponding to the blue pixel. In this embodiment, the blue light compensation layer 130 and the compensation excitation layer 131 are used to replace the blue light emitting unit 120B, so there is no attenuation problem of the blue light emitting layer 122B.

[0049] Among them, the compensation excitation layer 131 is arranged in the same layer as the red light-emitting unit 120R and the green light-emitting unit 120G, the compensation excitation layer 131 includes a first electrode 132, an excitation light source layer 133 and a second electrode 134, the red light-emitting unit 120R includes a bottom electrode 121, a red light-emitting layer 122R and a top electrode 123, the green light-emitting unit 120G includes a bottom electrode 121, a green light-emitting layer 122G and a top electrode 123, the first electrode 132 is arranged in the same layer as the bottom electrode 121 of the red light-emitting unit 120R and the bottom electrode 121 of the green light-emitting unit 120G, the second electrode 134 is connected to the top electrode 123 of the red light-emitting unit 120R and the top electrode 123 of the green light-emitting unit 120G; the blue light compensation layer 130 is arranged between the excitation light source layer 133 and the second electrode 134.

[0050] In this embodiment, the first electrode 132 that drives the excitation light source layer 133 of the compensation excitation layer 131 to emit invisible light can be connected to the thin film transistor in the pixel driving layer 111 and work under the control of the scan line and the data line, while the second electrode 134 can be connected to the top electrode 123. Generally speaking, the top electrode 123 of the light-emitting unit 120 in the top-emitting display panel 100 adopts a whole-surface deposition process so that all the light-emitting units 120 share the top electrode 123, thereby reducing the impedance of the top electrode 123.

[0051] Of course, in addition to replacing the blue light-emitting unit 120B, the compensation excitation layer 131 and the blue light compensation layer 130 in this embodiment can also serve as auxiliary pixels of the blue light-emitting unit 120B, that is, a pixel group has a red pixel and a green pixel, as well as a blue pixel and a blue auxiliary pixel. The blue pixel is a normal blue light-emitting unit 120B, and the blue auxiliary pixel is in the form of the compensation excitation layer 131 and the blue light compensation layer 130.

[0052] Figure 4 is a schematic diagram of a display panel of the fourth embodiment of the present application, see Figure 4 As shown, in another embodiment of the present application, the metal organic framework material can be controlled to emit light by using the function of selecting materials to emit monochromatic light such as red, green and blue light through the compensation excitation layer 131.

[0053] Specifically, the red light emitting unit 120R includes a bottom electrode 121, a compensation excitation layer 131, a top electrode 123 and a red light compensation layer, wherein the compensation excitation layer 131 is used to emit invisible light under the drive of the bottom electrode 121 and the top electrode 123; the red light compensation layer is used to emit red visible light under the action of the compensation excitation layer 131 to achieve light emission. The green light emitting unit 120G includes a bottom electrode 121, a compensation excitation layer 131, a top electrode 123 and a green light compensation layer, wherein the compensation excitation layer 131 is used to emit invisible light under the drive of the bottom electrode 121 and the top electrode 123, and the green light compensation layer is used to emit green visible light under the action of the compensation excitation layer 131 to achieve light emission. The blue light emitting unit 120B includes a bottom electrode 121, a compensation excitation layer 131, a top electrode 123 and a blue light compensation layer 130. The compensation excitation layer 131 is used to emit invisible light under the drive of the bottom electrode 121 and the top electrode 123, and the blue light compensation layer 130 is used to emit blue visible light to achieve light emission under the action of the compensation excitation layer 131. In this embodiment, the light emission intensity of the red light compensation layer, the green light compensation layer and the blue light compensation layer 130 can be adjusted by adjusting the intensity of the invisible light emitted by the compensation excitation layer 131.

[0054] Figure 5 is a schematic diagram of the display device of the present application, see Figure 5 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.

[0055] The present application sets a blue light compensation layer 130 in the display panel 100, and the blue light compensation layer 130 emits blue light under the control of the compensation excitation layer 131. When the blue light of the display panel 100 is attenuated, the blue light of the display panel 100 can be compensated under the control of the compensation excitation layer 131, thereby avoiding the problem of yellowing of the display. The present application mainly utilizes the property that the metal organic framework material can generate blue visible light under the excitation of invisible light, and sets a blue light compensation layer 130 under the blue pixel to realize the luminous compensation of the blue pixel. On the one hand, the life of the blue pixel can be improved without reducing the opening area of ​​other pixels, and on the other hand, no additional driving circuit is required, and the compensation of blue light can be realized under the excitation of invisible light. And the advantage of the present application is that, through the action of the blue light compensation layer 130, the blue light is compensated when the blue light is attenuated, and when the blue light is not attenuated, the compensation excitation layer 131 can be controlled not to work, so that no blue light is generated, avoiding the problem of excessive blue light in normal display.

[0056] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them 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.

[0057] 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, and two adjacent light-emitting units are separated by the pixel definition layer; An encapsulation layer, disposed on the light-emitting unit and used to seal the light-emitting unit; Wherein, the display panel further comprises a blue light compensation layer and a compensation excitation layer, and the blue light compensation layer is used for emitting blue light under the control of the compensation excitation layer.

2. The display panel according to claim 1, characterized in that: The blue light compensation layer is formed of a metal organic framework material, and the metal organic framework material includes a lanthanide metal organic framework material; the compensation excitation layer is used to emit invisible light, and the blue light compensation layer is used to generate blue visible light under the excitation of the invisible light.

3. The display panel according to claim 2, characterized in that: The light emitting units include a red light emitting unit, a green light emitting unit and a blue light emitting unit, The blue light compensation layer is arranged around the blue light emitting unit and surrounds the blue light emitting unit.

4. The display panel according to claim 3, characterized in that: The blue light compensation layer is arranged on the same layer as the blue light emitting unit; The compensation excitation layer is arranged under the blue light compensation layer, and is used for providing the invisible light to the blue light compensation layer.

5. The display panel according to claim 3, characterized in that: The blue light-emitting unit comprises a bottom electrode, a blue light-emitting layer and a top electrode; the blue light-emitting layer is arranged on the bottom electrode, and the top electrode is arranged on the blue light-emitting layer; The blue light compensation layer is arranged on the same layer as the bottom electrode, the blue light compensation layer is arranged under the pixel definition layer, and extends toward the adjacent light emitting unit; The compensation excitation layer is arranged under the bottom electrode.

6. The display panel according to claim 3, characterized in that: The display panel further comprises a color filter layer, the color filter layer comprises a black matrix and a plurality of color filter portions, the black matrix is ​​arranged in the non-opening area, and the color filter portion is arranged in the opening area; In the non-opening area adjacent to the blue light emitting unit, a blue light compensation layer is arranged on the pixel definition layer, a window is arranged on the black matrix, and the blue light compensation layer emits light from the window.

7. The display panel according to claim 2, characterized in that: The light-emitting unit includes a red light-emitting unit and a green light-emitting unit, and the display panel also includes red pixels, blue pixels and green pixels. The red light-emitting unit is arranged corresponding to the red pixel, the green light-emitting unit is arranged corresponding to the green pixel, and the blue light compensation layer is arranged corresponding to the blue pixel.

8. The display panel according to claim 7, characterized in that: The compensation excitation layer is arranged in the same layer as the red light-emitting unit and the green light-emitting unit, the compensation excitation layer includes a first electrode, an excitation light source layer and a second electrode, the red light-emitting unit includes a bottom electrode, a red light-emitting layer and a top electrode, the green light-emitting unit includes a bottom electrode, a green light-emitting layer and a top electrode, the first electrode is arranged in the same layer as the bottom electrode of the red light-emitting unit and the bottom electrode of the green light-emitting unit, and the second electrode is connected to the top electrode of the red light-emitting unit and the top electrode of the green light-emitting unit; The blue light compensation layer is disposed between the excitation light source layer and the second electrode.

9. The display panel according to claim 7, characterized in that: The area of ​​the blue pixel is greater than the area of ​​the red pixel or the green pixel.

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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