Display panel and display device

Abstract

The utility model provides a display panel and a display device. The display panel includes: an array substrate; the plurality of sub-pixels are arranged on the array substrate, and the plurality of sub-pixels comprise a first color sub-pixel; the multiple light reflection layers cover the sides, away from the array substrate, of the multiple sub-pixels in a one-to-one correspondence mode, and the multiple light reflection layers comprise first light reflection layers covering the first color sub-pixels; wherein the first light reflection layer comprises a first metal layer, a transparent dielectric layer and a second metal layer which are sequentially stacked in the direction gradually away from the array substrate. According to the display panel provided by the embodiment of the invention, through the arrangement of the first light reflecting layer, the first light reflecting layer can absorb and reflect the light with the specific wavelength, so that the high contrast ratio and the high color gamut of the display panel are realized, and the lighting effect of the display panel is improved.

Description

Technical Field

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

[0002] In existing display panels, in order to achieve high contrast and high color purity (high color gamut), and to prevent ambient light from irradiating pixel units and affecting contrast, a black or gray barrier structure is generally set corresponding to the pixel units in the display panel. However, due to the light absorption effect of the barrier structure, especially in high PPI (Pixels Per Inch), the light absorption is further aggravated, thereby affecting the display effect of the display panel.

[0003] Therefore, there is an urgent need to provide a new display panel to achieve high contrast and high color purity (high color gamut) and improve the display effect of the display panel. Utility Model Content

[0004] In order to improve at least some of the above disadvantages or shortcomings, embodiments of the present invention provide a display panel and a display device.

[0005] Specifically, an embodiment of the utility model provides a display panel, comprising: an array substrate; a plurality of sub-pixels, arranged on the array substrate, the plurality of sub-pixels including a first color sub-pixel; and a plurality of light reflecting layers, the plurality of light reflecting layers correspondingly covering a side of the plurality of sub-pixels away from the array substrate, the plurality of light reflecting layers including a first light reflecting layer covering the first color sub-pixel; wherein the first light reflecting layer comprises a first metal layer, a transparent medium layer, and a second metal layer, which are sequentially stacked in a direction gradually away from the array substrate.

[0006] In one embodiment of the present invention, the plurality of sub-pixels further include a blue sub-pixel; the plurality of light reflecting layers further include a second light reflecting layer covering the blue sub-pixel; wherein the second light reflecting layer includes a third metal layer.

[0007] In an embodiment of the present invention, the second light reflecting layer further includes a fourth metal layer, and the third metal layer and the fourth metal layer are sequentially stacked in a direction gradually away from the array substrate.

[0008] In an embodiment of the present invention, the first metal layer and the third metal layer are made of the same material and have the same thickness.

[0009] In one embodiment of the present invention, the thickness of the first metal layer is in the range of 5 to 1000 nanometers, and / or the thickness of the transparent medium layer is in the range of 5 to 500 nanometers, and / or the thickness of the second metal layer is in the range of 5 to 500 nanometers.

[0010] In one embodiment of the present invention, the thickness of the third metal layer is in the range of 5 to 1000 nanometers, and / or the thickness of the fourth metal layer is in the range of 5 to 500 nanometers.

[0011] In one embodiment of the present invention, the first color sub-pixel includes a blue light-emitting chip and a first color conversion layer, the blue light-emitting chip is arranged on the array substrate, and the first color conversion layer is arranged on the blue light-emitting chip; the first color sub-pixel is a red sub-pixel or a green sub-pixel, and the first color conversion layer is a red color conversion layer or a green color conversion layer.

[0012] In one embodiment of the present invention, the display panel further comprises a plurality of light-transmitting layers disposed on the array substrate, the plurality of light-transmitting layers cover the plurality of sub-pixels one by one, and the light-reflecting layer is located on a side of the light-transmitting layer away from the sub-pixels.

[0013] In an embodiment of the present invention, the surface of the light-transmitting layer facing away from the sub-pixel is a parabola; the parabola is a rotational parabola, an elliptical parabola or a parabolic cylinder.

[0014] In one embodiment of the utility model, the array substrate includes a backplane, a plurality of shading portions and a plurality of pixel driving structures, wherein the plurality of shading portions are arranged on the backplane, and the shading portions are correspondingly arranged in the gap between the positive projections of two adjacent light reflecting layers on the backplane; the plurality of pixel driving structures are respectively arranged corresponding to the plurality of sub-pixels, the plurality of pixel driving structures are electrically connected to the plurality of sub-pixels, and the pixel driving structures are arranged on a side of the shading portion away from the backplane; wherein the width of the shading portion is greater than or equal to the gap between two adjacent light reflecting layers, and the width of the shading portion is greater than the width of the pixel driving structure.

[0015] In one embodiment of the present invention, the absorption wavelength range of the first light reflecting layer is 450-492 nanometers, and the reflection wavelength range of the first light reflecting layer is 510-760 nanometers.

[0016] On the other hand, an embodiment of the present invention further provides a display device, comprising the display panel as described above.

[0017] As can be seen from the above, the above technical features of the utility model can have one or more of the following beneficial effects: by setting a first color sub-pixel on the array substrate, and setting a first light reflecting layer covering the first color sub-pixel on the array substrate, the first light reflecting layer includes a first metal layer, a transparent medium layer, and a second metal layer stacked. Through the setting of the first light reflecting layer, the first light reflecting layer can absorb and reflect light of a specific wavelength, thereby achieving a high contrast and high color gamut of the display panel and improving the light efficiency of the display panel. In addition, the multi-film structure of the first light reflecting layer can achieve water and oxygen barrier, improve reliability, and reduce structural complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the utility model.

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the first light reflecting layer.

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the second light reflecting layer.

[0022] Figure 4 It is a spectrum diagram of the absorbed light and reflected light of the first light reflecting layer.

[0023] Figure 5 It is a spectrum diagram of the absorbed light and reflected light of the second light reflecting layer.

[0024] Figure 6 Spectrum diagram of absorbed light and reflected light of another first light reflecting layer.

[0025] Figure 7 and Figure 8 FIG. 4 is a spectrum diagram of absorbed light and reflected light of another second light reflecting layer.

[0026] Fig. 9 Another schematic diagram of the structure of the display panel provided by the embodiment of the utility model.

[0027] Fig.10 A schematic structural diagram of yet another display panel provided in an embodiment of the utility model.

[0028] Fig.11A schematic structural diagram of another display panel provided in an embodiment of the utility model.

[0029] Fig.12 A schematic structural diagram of a display device provided in an embodiment of the utility model.

[0030] Main component number:

[0031] 10. Display panel; 20. Display device; 100. Array substrate; 110. Backplane; 120. Transparent circuit layer; 131. Circuit layer; 140. Transparent flat layer; 150. Shading portion; 200. Sub-pixel; 210. First color sub-pixel; 211. Blue light-emitting chip; 212. First color conversion layer; 220. Blue sub-pixel; 300. Transparent layer; 400. Light reflection layer; 410. First light reflection layer; 411. First metal layer; 412. Transparent medium layer; 413. Second metal layer; 420. Second light reflection layer; 421. Third metal layer; 422. Fourth metal layer; 500. Protective layer; 600. Pixel driving structure. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to improve contrast and color purity, the display panels in the related art usually set a color film on the quantum dots and set a black or gray retaining wall structure. However, due to the light absorption of the retaining wall structure, especially in high PPI (Pixels Per Inch, the number of pixels per inch), the aspect ratio of the quantum dots is large, which further aggravates the light absorption. In addition, the reliability of quantum dots also requires a higher water and oxygen barrier, and the related technology is to directly make an inorganic / organic composite encapsulation layer on the color film and retaining wall structure on the quantum dot layer to form a water and oxygen barrier encapsulation layer, but this method makes the structure complicated.

[0034] [First embodiment]

[0035] To overcome at least some of the deficiencies in the above-mentioned related solutions, see Figure 1 A display panel 10 provided by an embodiment of the utility model includes an array substrate 100 , a plurality of sub-pixels 200 and a plurality of light reflection layers 400 .

[0036] Specifically, the array substrate 100 may be, for example, a TFT array substrate, and the array substrate 100 may be, for example, a transparent substrate. A plurality of sub-pixels 200 are arranged on the array substrate 100, and the plurality of sub-pixels 200 may include, for example, a first color sub-pixel 210, and the first color sub-pixel 210 may be, for example, a red sub-pixel and a green sub-pixel, and the first color sub-pixel 210 is arranged on the array substrate 100. A plurality of light reflection layers 400 cover one side of the plurality of sub-pixels 200 away from the array substrate 100 in a one-to-one correspondence, and the plurality of light reflection layers 400 may include, for example, a first light reflection layer 410, and the first light reflection layer 410 covers one side of the first color sub-pixel 210 away from the array substrate 100. For example, each first color sub-pixel 210 corresponds to a first light reflection layer 410, for example, a red sub-pixel and a green sub-pixel may be arranged on the array substrate 100, and the red sub-pixel is correspondingly provided with a first light reflection layer 410, and the green sub-pixel is also correspondingly provided with a first light reflection layer 410.

[0037] See also Figure 2 , the first light reflection layer 410 may, for example, include a first metal layer 411, a transparent medium layer 412, and a second metal layer 413 which are sequentially stacked in a direction gradually away from the array substrate 100, that is, the first metal layer 411 is arranged on a side close to the first color sub-pixel 210. The light emitted by the first color sub-pixel 210 may, for example, irradiate the first light reflection layer 410, and the first light reflection layer 410 absorbs the blue light and reflects the red light or the green light to the array substrate 100, and the light emitting surface may, for example, be a side of the array substrate 100 facing away from the ion pixel 200. The first metal layer 411, the transparent medium layer 412, and the second metal layer 413 may, for example, be prepared and formed by evaporation processes, that is, firstly evaporation forms the first metal layer 411, then evaporation forms the transparent medium layer 412 on the first metal layer 411, and then evaporation forms the second metal layer 413 on the transparent medium layer 412. The absorption wavelength range of the first light reflection layer 410 is 450-492 nanometers, and the reflection wavelength range of the first light reflection layer 410 is 510-760 nanometers.

[0038] By setting the first light reflecting layer 410, the first light reflecting layer 410 can absorb and reflect light of a specific wavelength, for example, absorbing blue light and reflecting red and green light. For the red sub-pixel, the first light reflecting layer 410 can absorb blue light and reflect red light, thereby filtering out reflected red and blue light; for the green sub-pixel, the first light reflecting layer 410 can absorb blue light and reflect green light, thereby filtering out reflected green and blue light. The high contrast and high color gamut of the display panel 10 are achieved, and the display effect of the display panel is improved. In addition, the multi-film layer structure of the first light reflecting layer 410 can achieve water and oxygen barrier, improve reliability, and reduce structural complexity.

[0039] See also Figure 1 and Figure 3 , the multiple sub-pixels 200 may, for example, further include a blue sub-pixel 220, and the multiple light reflecting layers 400 may, for example, further include a second light reflecting layer 420. For example, the display panel 10 may be provided with multiple pixels, each of which may, for example, include multiple sub-pixels 200, and the multiple sub-pixels 200 may specifically include, for example, red sub-pixels, green sub-pixels, and blue sub-pixels, which are arranged at intervals on the array substrate 100. The second light reflecting layer 420 is arranged corresponding to the blue sub-pixel 220, and the second light reflecting layer 420 covers the side of the blue sub-pixel 220 away from the array substrate 100.

[0040] In a specific implementation of this embodiment, the second light reflecting layer 420 may include, for example, a third metal layer 421. In another specific implementation of this embodiment, the second light reflecting layer 420 may include, for example, a third metal layer 421 and a fourth metal layer 422 which are sequentially stacked in a direction gradually away from the array substrate 100, and the third metal layer 421 is arranged on a side close to the blue sub-pixel 220. The second light reflecting layer 420 has a full-band visible light reflection function, and can realize the reflection of blue light, thereby further improving the display effect of the display panel 10.

[0041] Furthermore, the material of the first metal layer 411 may be, for example, Cu (copper), Al (aluminum), Au (gold), W (tungsten), V (vanadium), Fe (iron), Ag (silver), Sn (tin), Mo (molybdenum), Ni (nickel) or Ti (titanium), and the thickness of the first metal layer 411 may be, for example, 5 to 1000 nanometers. The material of the transparent medium layer 412 may be, for example, ITO (Indium Tin Oxide), AZO (Aluminum-doped Zinc Oxide), IGZO (Indium Gallium Zinc Oxide), ZnO (zinc oxide), TiO 2 (TiO2), SiO X (Silicon oxide), SiN X (silicon nitride), ZrO 2 (Zirconium dioxide), Ta 3 O 5 (Tantalum pentoxide), SnO 2 (tin dioxide), Sb 2 O 3 (antimony trioxide) or CeO 2(cerium dioxide), etc., and the thickness of the transparent medium layer 412 can be, for example, 5 to 500 nanometers. The material of the second metal layer 413 can be, for example, Cu, Al, Au, W, V, Fe, Ag, Sn, Mo, Ni or Ti, etc., and the thickness of the second metal layer 413 can be, for example, 5 to 500 nanometers. In a specific implementation of this embodiment, the materials of the first metal layer 411 and the second metal layer 413 can be, for example, the same or different, and can be set according to actual needs.

[0042] The material of the third metal layer 421 may be, for example, Cu, Al, Au, W, V, Fe, Ag, Sn, Mo, Ni or Ti, and the thickness of the third metal layer 421 may be, for example, 5 to 1000 nanometers. The material of the fourth metal layer 422 may be, for example, Cu, Al, Au, W, V, Fe, Ag, Sn, Mo, Ni or Ti, and the thickness of the fourth metal layer 422 may be, for example, 5 to 500 nanometers. In a specific implementation of this embodiment, the materials of the third metal layer 421 and the fourth metal layer 422 may be, for example, the same or different, and may be set according to actual needs.

[0043] In a specific implementation of the present embodiment, the material and thickness of the first metal layer 411 and the third metal layer 421 may be, for example, the same. The material and thickness of the second metal layer 413 and the fourth metal layer 422 may be, for example, the same. In this way, the first metal layer 411 and the third metal layer 421 can be prepared and formed by the same process, and the second metal layer 413 and the fourth metal layer 422 can be prepared and formed by the same process, which can improve the preparation efficiency. Specifically, the first metal layer 411 and the third metal layer 421 can be formed, for example, by the same evaporation step. When preparing the transparent dielectric layer 412, for example, a mask can be set on the third metal layer 421, and then the transparent dielectric layer 412 is formed on the first metal layer 411 by an evaporation process, and then the mask is removed, and then the second metal layer 413 and the fourth metal layer 422 are formed by the same evaporation step.

[0044] Specifically, for example, see Figure 4 , the thickness of the first metal layer 411 in the first light reflecting layer 410 is 28 nanometers, the thickness of the transparent medium layer 412 is 46.6 nanometers, and the thickness of the second metal layer 413 is 120 nanometers. The spectrum of the first light reflecting layer 410 is as shown in FIG. Figure 4 As shown, the first light reflecting layer 410 has a higher absorptivity in the wavelength range of 420 to 490 nanometers, and has a higher reflectivity in the wavelength range of 510 to 760 nanometers, that is, the first light reflecting layer 410 can absorb blue light and reflect red and green light, thereby avoiding the influence of blue light on red and green light and further improving the display effect.

[0045] See also Figure 5, the thickness of the third metal layer 421 in the second light reflecting layer 420 is 28 nanometers, the thickness of the fourth metal layer 422 is 120 nanometers, and the spectrum of the second light reflecting layer 420 is as shown in FIG. Figure 5 As shown, the second light reflecting layer 420 has a higher reflectivity within the entire wavelength range and a lower absorptivity within the entire wavelength range, and therefore, the second light reflecting layer 420 can reflect blue light.

[0046] See also Figure 6 , the thickness of the first metal layer 411 of the first light reflecting layer 410 is 42 nanometers, the thickness of the transparent medium layer 412 is 53 nanometers, and the thickness of the second metal layer 413 is 120 nanometers. The spectrum of the first light reflecting layer 410 is shown in FIG. Figure 6 As shown, the absorption rate of the first light reflecting layer 410 reaches a peak value in the wavelength range of 420 to 490 nanometers, that is, it has a high absorption rate, and has a high reflectivity in the wavelength range of 510 to 760 nanometers, that is, the first light reflecting layer 410 can absorb blue light and reflect red and green light, thereby avoiding the influence of blue light on red and green light, and further improving the display effect.

[0047] See also Figure 7 , the thickness of the third metal layer 421 of the second light reflecting layer 420 is 42 nanometers, and the thickness of the fourth metal layer 422 is 120 nanometers. The spectrum of the second light reflecting layer 420 is as follows Figure 7 As shown, the second light reflecting layer 420 has a higher reflectivity within the entire wavelength range and a lower absorptivity within the entire wavelength range, and therefore, the second light reflecting layer 420 can reflect blue light.

[0048] See also Figure 8 , the thickness of the third metal layer 421 of the second light reflecting layer 420 is 120 nanometers. The spectrum of the second light reflecting layer 420 is as follows Figure 8 As shown, the second light reflecting layer 420 has a higher reflectivity within the entire wavelength range and a lower absorptivity within the entire wavelength range, and therefore, the second light reflecting layer 420 can reflect blue light.

[0049] See also Figure 1Specifically, the first color sub-pixel 210 may include a blue light-emitting chip 211 and a first color conversion layer 212, and the blue sub-pixel 220 may include a blue light-emitting chip 211. The blue light-emitting chip 211 may be, for example, a blue Micro-LED (Microlight-emitting diode). A plurality of blue light-emitting chips 211 may be, for example, arranged at intervals on the array substrate 100. The first color conversion layer 212 is correspondingly arranged on the corresponding blue light-emitting chip 211. When the first color sub-pixel 210 is a red sub-pixel, the first color conversion layer 212 may be, for example, a red color conversion layer; when the first color sub-pixel 210 is a green sub-pixel, the first color conversion layer 212 may be, for example, a green color conversion layer. The first color sub-pixel 210 realizes red conversion or green conversion by arranging the first color conversion layer 212 on the blue light-emitting chip 211. The first color conversion layer 212 may be, for example, a quantum dot color conversion layer or a nano fluorescent pink color conversion layer.

[0050] See also Fig. 9 , the display panel 10 may, for example, further include a plurality of light-transmitting layers 300, the plurality of light-transmitting layers 300 being disposed on the array substrate 100, the plurality of light-transmitting layers 300 correspondingly covering the plurality of sub-pixels 200 one by one, each light-transmitting layer 300 corresponding to a sub-pixel 200, and the light-reflecting layer 400 being located on the side of the light-transmitting layer 300 facing the ion pixel 200. The light-transmitting layer 300 may, for example, be a transparent encapsulation layer or a lens. For example, the light-transmitting layer 300 covering the first color sub-pixel 210 may, for example, be located on the side of the first light-reflecting layer 410 close to the first color sub-pixel 210, that is, the first light-reflecting layer 410 is located on the surface of the light-transmitting layer 300, and the first metal layer 411 is adjacent to the light-transmitting layer 300; the light-transmitting layer 300 covering the blue sub-pixel 220 may, for example, be located on the side of the second light-reflecting layer 420 close to the blue sub-pixel 220, that is, the second light-reflecting layer 420 is located on the surface of the light-transmitting layer 300, and the third metal layer 421 is adjacent to the light-transmitting layer 300. In the present embodiment, the surface of the light-transmitting layer 300 facing the ion pixel 200 may be a structure such as a rotational parabola, an elliptical parabola, a parabolic cylinder, a sphere, a prism or a prism.

[0051] Further, the surface of the light-transmitting layer 300 facing the ion pixel 200 is parabolic. Correspondingly, the first light reflecting layer 410 and the second light reflecting layer 420 may also be, for example, parabolic structures. By setting the surface of the light-transmitting layer 300 to be a parabola, and the surface of the light-transmitting layer 300 is provided with the light reflecting layer 400, a narrow viewing angle effect of emitting light downward can be achieved, and a collimation effect of the display panel 10 can be achieved. The parabola is a rotational parabola, an elliptical parabola, a parabolic cylinder, etc.

[0052] In this embodiment, the blue light emitting chip 211 may be, for example, a flip-chip Micro-LED or a vertical Micro-LED. Fig.10 , the blue light emitting chip 211 may be, for example, a vertical structure Micro-LED, the array substrate 100 may, for example, include a back plate 110, a pixel driving structure 600 and a transparent flat layer 140, the blue light emitting chip 211 may, for example, be disposed on the back plate 110 and disposed on the transparent flat layer 140, and the blue light emitting chip 211 may, for example, be electrically connected to the pixel driving structure 600 through a circuit layer 131. A protective layer 500 may, for example, be further disposed on the array substrate 100, and the protective layer 500 covers the first light reflecting layer 410 and the second light reflecting layer 420.

[0053] See also Fig.11 , the blue light emitting chip 211 may be, for example, a flip-chip Micro-LED, the array substrate 100 may include, for example, a backplane 110, a pixel driving structure 600, and a transparent flat layer 140, the blue light emitting chip 211 may be, for example, disposed on the backplane 110 and disposed on the transparent flat layer 140, and the blue light emitting chip 211 may be, for example, electrically connected to the pixel driving structure 600 through a transparent circuit layer 120. A protective layer 500 may be further disposed on the array substrate 100, and the protective layer 500 covers the first light reflecting layer 410 and the second light reflecting layer 420.

[0054] See also Fig.10 , the array substrate 100 may be provided with a plurality of pixels, for example, each pixel may include a plurality of sub-pixels 200, for example, the plurality of sub-pixels 200 may include red sub-pixels, green sub-pixels and blue sub-pixels arranged at intervals, and each sub-pixel 200 may be provided with a corresponding light reflection layer 400, for example. The array substrate 100 includes a back plate 110 and a plurality of light shielding portions 150, for example, the plurality of light shielding portions 150 may be provided on the back plate 110, and the light shielding portions 150 are provided in the gap between the orthographic projections of two adjacent light reflection layers on the back plate 110. The light shielding portions 150 may be a black plastic material, and the reflectivity of the light shielding portions 150 may be, for example, less than 5%. The light shielding portions 150 may absorb light leakage at a large viewing angle to solve the problem of light leakage at a large angle and improve the display effect.

[0055] See also Fig.11 , multiple pixel driving structures 600 can be, for example, arranged corresponding to multiple sub-pixels 200, and the multiple pixel driving structures 600 are electrically connected to the multiple sub-pixels 200, and the pixel driving structure 600 can be, for example, arranged on a side of the light shielding portion 150 away from the back plate 110, the width B of the light shielding portion 150 is greater than or equal to the gap A between two adjacent light reflecting layers 400, and the width B of the light shielding portion 150 is greater than the width C of the pixel driving structure 600, so that the light can be utilized to the maximum extent and the influence of the light on the pixel driving structure 600 can be reduced.

[0056] The manufacturing method of the display panel 10 provided in this embodiment may, for example, include: providing an array substrate 100; forming a first color sub-pixel 210 and a blue sub-pixel 220 on the array substrate 100, specifically, for example, forming a plurality of blue light-emitting chips 211 on the array substrate 100, and then forming a first color conversion layer 212 on the blue light-emitting chip 211 corresponding to the first color sub-pixel 210; forming a first light reflecting layer 410 and a second light reflecting layer 420 on the array substrate 100.

[0057] [Second embodiment]

[0058] See also Fig.12 The second embodiment of the present invention further provides a display device 20, including the display panel 10 in the first embodiment. The display device 20 provided in this embodiment has the same beneficial effects as the first embodiment. The display device 20 can be, for example, an electronic device with a display function, such as a mobile phone, a computer, a tablet, a smart watch, etc. The display device 20 also includes necessary structures such as a control circuit board for controlling the operation of the display panel 10. The settings of these necessary structures can be set with reference to the settings of conventional display devices, and will not be described in detail in this embodiment.

[0059] In addition, it can be understood that the aforementioned embodiments are merely illustrative descriptions of the present invention. Under the premise that the technical features do not conflict, the structures do not contradict, and the purpose of the present invention is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

[0060] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0061] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A display panel (10), characterized in that: include: An array substrate (100); A plurality of sub-pixels (200) are arranged on the array substrate (100), wherein the plurality of sub-pixels (200) include a first color sub-pixel (210); as well as a plurality of light reflecting layers (400), the plurality of light reflecting layers (400) correspondingly covering one side of the plurality of sub-pixels (200) away from the array substrate (100), the plurality of light reflecting layers (400) comprising a first light reflecting layer (410) covering the first color sub-pixel (210); The first light reflecting layer (410) comprises a first metal layer (411), a transparent medium layer (412) and a second metal layer (413) which are sequentially stacked in a direction gradually away from the array substrate (100).

2. The display panel (10) according to claim 1, characterized in that: The plurality of sub-pixels (200) further include a blue sub-pixel (220); the plurality of light reflecting layers (400) further include a second light reflecting layer (420) covering the blue sub-pixel (220); Wherein, the second light reflecting layer (420) includes a third metal layer (421).

3. The display panel (10) according to claim 2, characterized in that: The second light reflecting layer (420) further comprises a fourth metal layer (422), and the third metal layer (421) and the fourth metal layer (422) are stacked in sequence in a direction gradually moving away from the array substrate (100).

4. The display panel (10) according to claim 2 or 3, characterized in that: The first metal layer (411) and the third metal layer (421) have the same material and thickness.

5. The display panel (10) according to claim 1, characterized in that: The thickness of the first metal layer (411) is in the range of 5 to 1000 nanometers, and / or the thickness of the transparent medium layer (412) is in the range of 5 to 500 nanometers, and / or the thickness of the second metal layer (413) is in the range of 5 to 500 nanometers.

6. The display panel (10) according to claim 3, characterized in that: The thickness of the third metal layer (421) is in the range of 5 to 1000 nanometers, and / or the thickness of the fourth metal layer (422) is in the range of 5 to 500 nanometers.

7. The display panel (10) according to claim 2, characterized in that: The first color sub-pixel (210) comprises a blue light-emitting chip (211) and a first color conversion layer (212); the blue light-emitting chip (211) is arranged on the array substrate (100), and the first color conversion layer (212) is arranged on the blue light-emitting chip (211); the first color sub-pixel (210) is a red sub-pixel or a green sub-pixel, and the first color conversion layer (212) is a red color conversion layer or a green color conversion layer.

8. The display panel (10) according to claim 1, characterized in that: Also includes: A plurality of light-transmitting layers (300) are arranged on the array substrate (100), the plurality of light-transmitting layers (300) cover the plurality of sub-pixels (200) one by one, and the light-reflecting layer (400) is located on a side of the light-transmitting layer (300) away from the sub-pixels (200).

9. The display panel (10) according to claim 8, characterized in that: The surface of the light-transmitting layer (300) facing away from the sub-pixel (200) is in the form of a parabola; the parabola is a rotational parabola, an elliptical parabola or a parabolic cylinder.

10. The display panel (10) according to claim 1, characterized in that: The array substrate (100) comprises a back plate (110), a plurality of light shielding portions (150) and a plurality of pixel driving structures (600); the plurality of light shielding portions (150) are arranged on the back plate (110), and the light shielding portions (150) are correspondingly arranged in the gap between the orthographic projections of two adjacent light reflection layers (400) on the back plate (110); A plurality of pixel driving structures (600) are respectively arranged corresponding to the plurality of sub-pixels (200), the plurality of pixel driving structures (600) are electrically connected to the plurality of sub-pixels (200), and the pixel driving structure (600) is arranged on a side of the light shielding portion (150) away from the back plate (110); wherein the width of the light shielding portion (150) is greater than or equal to the gap between two adjacent light reflecting layers (400), and the width of the light shielding portion (150) is greater than the width of the pixel driving structure (600).

11. The display panel (10) according to claim 1, characterized in that: The absorption wavelength range of the first light reflecting layer (410) is 450 to 492 nanometers, and the reflection wavelength range of the first light reflecting layer (410) is 510 to 760 nanometers.

12. A display device (20), characterized in that: It comprises the display panel (10) according to any one of claims 1 to 11.

Images