Display panel, display device and manufacturing method

Abstract

The invention discloses a display panel, a display device and a manufacturing method, the display panel comprises a color film substrate, an array substrate arranged opposite to the color film substrate and a liquid crystal layer located between the color film substrate and the array substrate, frame glue is arranged between the color film substrate and the array substrate, and the frame glue corresponds to a non-display area; an electroluminescent layer is arranged on one side, close to the frame glue, of at least one of the color film substrate and the array substrate, and the electroluminescent layer corresponds to the frame glue; and when the frame glue is cured, an electric signal is applied to the electroluminescent layer, so that the electroluminescent layer emits light towards the frame glue. The electroluminescent layer corresponding to the frame adhesive is arranged on the side, close to the frame adhesive, of at least one of the color film substrate and the array substrate, so that when the frame adhesive is cured, an electric signal can be applied to the electroluminescent layer, the electroluminescent layer emits light towards the frame adhesive, the curing effect on the frame adhesive is improved, and the service life of the color film substrate and the array substrate is prolonged. Pollution between the frame glue and the liquid crystal is reduced, and the yield of the narrow frame is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel, a display device and a manufacturing method. BACKGROUND

[0002] With the development of display technology, thin and light display panels are favored by consumers, especially thin and light liquid crystal display (LCD) panels. An existing display panel includes a thin film transistor array substrate (TFT Array Substrate), a color filter substrate (CF Substrate), and liquid crystal molecules filled between the thin film transistor array substrate and the color filter substrate. When the display panel is working, driving voltages are respectively applied to the thin film transistor array substrate and the color filter substrate to control the rotation direction of the liquid crystal molecules between the two substrates, so as to refract the backlight provided by the backlight module of the display panel, thereby displaying the picture.

[0003] In order to prevent the liquid crystal layer between the array substrate and the color filter substrate from leaking, a frame glue is arranged in the peripheral non-display area of the display panel. The frame glue generally functions simultaneously by UV (ultraviolet) curing and heat curing. In the cell forming process, the frame glue and the liquid crystal are respectively coated on the color filter substrate side and the array substrate side, and the color filter substrate and the array substrate are laminated together in a vacuum device. The frame glue is not cured during the lamination process. After the lamination is completed, the display panel is subjected to UV curing to cure the UV curing glue in the frame glue, and then the entire display panel is heated to cure the heat curing frame glue. At the same time, the liquid crystal diffuses to the entire display panel under the heating environment. However, with the continuous updating of the display panel specifications, the frame is becoming narrower and narrower, and various wiring or gate integrated drive circuits are also arranged in the non-display area. At the time of coating the frame glue, the frame glue will inevitably cover a part of the metal wiring. During the curing of the frame glue, the part of the metal wiring will block part of the UV light, resulting in poor curing effect of the frame glue corresponding to the shadow part. After long-term use, the ions in the frame glue are easy to diffuse to the liquid crystal, causing pollution of the liquid crystal and the alignment film, and residual image or peripheral color difference will appear during display. SUMMARY

[0004] In order to overcome the shortcomings and deficiencies existing in the prior art, the purpose of the present application is to provide a display panel, a display device and a manufacturing method, so as to solve the problem of poor curing effect of the frame glue in the display panel in the prior art.

[0005] The purpose of the present application is achieved by the following technical solutions: The application provides a display panel, which comprises a color film substrate, an array substrate arranged opposite to the color film substrate, and a liquid crystal layer between the color film substrate and the array substrate, wherein a frame glue is arranged between the color film substrate and the array substrate, and the frame glue corresponds to a non-display area; At least one of the color film substrate and the array substrate is provided with an electroluminescent layer on a side close to the frame glue, and the electroluminescent layer corresponds to the frame glue; When the frame glue is cured, an electric signal is applied to the electroluminescent layer, so that the electroluminescent layer emits light towards the frame glue.

[0006] Further, the color film substrate is provided with a reflecting layer on a side close to the frame glue, the reflecting layer corresponds to the electroluminescent layer and is used for reflecting light emitted by the electroluminescent layer towards the frame glue.

[0007] Further, the display panel is provided with a light condensing structure between the electroluminescent layer and the frame glue, the light condensing structure corresponds to the electroluminescent layer and is used for converging light emitted by the electroluminescent layer towards the frame glue.

[0008] Further, the color film substrate is provided with an electroluminescent layer on a side close to the frame glue; The color film substrate is provided with a black matrix and a plurality of color resistance layers, the plurality of color resistance layers are arranged in an array in a display area, the black matrix is in a grid shape and separates the plurality of color resistance layers from each other, and the electroluminescent layer is arranged on a side of the black matrix close to the frame glue.

[0009] Further, the color film substrate is provided with an electrostatic shielding layer, the electrostatic shielding layer is arranged on the same layer as the electroluminescent layer and is made of the same material and by the same etching process.

[0010] Further, the array substrate is provided with an electroluminescent layer on a side close to the frame glue; The array substrate is provided with metal wires, and the electroluminescent layer is arranged on a side of the metal wires close to the frame glue.

[0011] Further, the array substrate is provided with pixel electrodes arranged in a positive array and common electrodes matched with the pixel electrodes; The pixel electrodes are arranged on the same layer as the electroluminescent layer and are made of the same material and by the same etching process, or the common electrodes are arranged on the same layer as the electroluminescent layer and are made of the same material and by the same etching process.

[0012] Further, the electroluminescent layer is made of graphene material.

[0013] The application further provides a manufacturing method of the display panel, used for manufacturing the display panel as described above, and the manufacturing method comprises the following steps of: An electric signal is applied to the electroluminescent layer so that the electroluminescent layer emits light towards the frame glue, and meanwhile, the frame glue is irradiated with UV light from the side of the array substrate with the UV mask as a shield.

[0014] The application further provides a display device comprising the display panel as described above.

[0015] The application has the advantages that by arranging the electroluminescent layer corresponding to the frame glue on at least one of the color film substrate and the array substrate on the side close to the frame glue, an electric signal can be applied to the electroluminescent layer when the frame glue is cured, so that the electroluminescent layer emits light towards the frame glue, thereby improving the curing effect of the frame glue, reducing the pollution between the frame glue and the liquid crystal, and improving the yield of the narrow frame. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a display device in an initial state in the embodiment one of the application.

[0017] Figure 2 is a top view structural schematic view of a display panel in the embodiment one of the application.

[0018] Figure 3 is a top view structural schematic view of a color film substrate in the embodiment one of the application.

[0019] Figure 4 is a top view structural schematic view of an electroluminescent layer in the embodiment one of the application.

[0020] Figure 5 is a planar structural schematic view of an array substrate in the embodiment one of the application.

[0021] Figure 6 is a schematic view when the frame glue is cured in the embodiment one of the application.

[0022] Figure 7 is a structural schematic view of a display device when displaying in the embodiment one of the application.

[0023] Figure 8 is a structural schematic view of a display device in an initial state in the embodiment two of the application.

[0024] Figure 9 is a structural schematic view of a display device in an initial state in the embodiment three of the application.

[0025] Figure 10 is a structural schematic view of a display device in an initial state in the embodiment four of the application.

[0026] Figure 11 is a structural schematic diagram of the display device in the initial state in Embodiment Five of the present application.

[0027] Figure 12 is a structural schematic diagram of the display device in the initial state in Embodiment Five of the present application.

[0028] Figure 13 is a structural schematic diagram of the display device in the initial state in Embodiment Six of the present application.

[0029] Figure 14 is a structural schematic diagram of the display device in the initial state in Embodiment Six of the present application.

[0030] Figure 15 is a structural schematic diagram of the display device in the initial state in Embodiment Seven of the present application.

[0031] Figure 16 is a structural schematic diagram of the display device in the initial state in Embodiment Seven of the present application.

[0032] Figure 17 is a structural schematic diagram of the display device in the initial state in Embodiment Seven of the present application.

[0033] Figure 18 is a structural schematic diagram of the display device in the initial state in Embodiment Seven of the present application. DETAILED DESCRIPTION

[0034] To further clarify the technical means and effects taken by the present application to achieve the predetermined purposes, the specific embodiments, structures, features and effects of the display panel, display device and manufacturing method according to the present application are described in detail as follows in combination with the drawings and preferred embodiments: [Embodiment One] Figure 1 is a structural schematic diagram of the display device in the initial state in Embodiment One of the present application. Figure 2 is a top view structural schematic diagram of the display panel in Embodiment One of the present application. Figure 3 is a top view structural schematic diagram of the color film substrate in Embodiment One of the present application. Figure 4 is a top view structural schematic diagram of the electroluminescent layer in Embodiment One of the present application. Figure 5 is a planar structural schematic diagram of the array substrate in Embodiment One of the present application.

[0035] As Figures 1 to 5As shown, the display panel provided by the embodiment one of the present application comprises a color film substrate 10, an array substrate 20 arranged opposite to the color film substrate 10, and a liquid crystal layer 30 located between the color film substrate 10 and the array substrate 20, and a frame glue 50 is arranged between the color film substrate 10 and the array substrate 20. The display panel has a display area 110 and a non-display area 120 located at the periphery of the display area 110, the display area 110 is used for displaying a picture, and the non-display area 120 is used for arranging a wiring or a driving circuit and the like. The frame glue 50 corresponds to the non-display area 120, that is, the frame glue 50 is located in the non-display area 120.

[0036] At least one of the color film substrate 10 and the array substrate 20 is provided with an electroluminescent layer 41 on the side close to the frame glue 50, and the electroluminescent layer 41 corresponds to the frame glue 50. When the frame glue 50 is cured, an electric signal is applied to the electroluminescent layer 41, so that the electroluminescent layer 41 emits light towards the frame glue 50, so as to improve the curing effect of the frame glue 50, reduce the pollution between the frame glue 50 and the liquid crystal, and improve the yield of the narrow frame. Optionally, the planar structures of the electroluminescent layer 41, the frame glue 50 and the non-display area 120 are all annular structures, for example, rectangular frames, so as to be arranged around the display area 110.

[0037] In the embodiment, the electroluminescent layer 41 is made of graphene material. Graphene is a two-dimensional nanomaterial composed of carbon atoms. In recent years, it has become a research hotspot in the application of flexible screens, touch screens and light-emitting diodes (LED) due to its high transparency (transmittance ≈98%), high mechanical strength, excellent heat conduction performance and electron mobility. Researchers led by Professor Tian-Ling Ren of Beijing Tsinghua University prepared a light-emitting material by using the interface of two different forms of graphene. They found that there are a series of discrete energy levels in the partially reduced graphene oxide between the interface of graphene oxide (GO) and reduced graphene oxide (rGO), which can emit different colors of light when different voltages are applied, almost covering the entire visible spectrum.

[0038] I. Graphene is a two-dimensional material composed of single-layer carbon atoms, with ultra-high electrical conductivity (resistivity of about 10 -6 Ω·cm) and light transmittance (98% visible light transmittance), which can excite visible light through doping or structural design. There are two main implementation methods at present: 1. Electroluminescence: Apply voltage to both sides of the graphene film, and the electron-hole recombination releases photons, with a brightness of 100~1000 cd / m² (reference: Nature Photonics, 2018 research).

[0039] 2. Plasma-enhanced light emission: Using graphene surface plasmon resonance effect, specific wavelength light emission is regulated through nanostructure, efficiency is improved by more than 30% (data from Advanced Materials 2020).

[0040] II. Conversion relationship between light intensity (cd) and radiant flux (W): .

[0041] Where 1 lumen (lm) corresponds to the radiant flux (W) of a specific wavelength (such as 555 nm) which needs to be calculated by the spectral luminous efficiency function V(λ).

[0042] Conversion between radiant power density (mW / cm²) and light intensity (cd): The light emitting area and directivity (solid angle) of the light source need to be combined. For example, if the radiant power density of the light source in a certain direction is PP (mW / cm²), its equivalent light intensity II (cd) can be calculated by integration: .

[0043] III. Using the above conversion relationship, taking 555 nm wavelength light as an example: 1 mW / cm² of radiant power density is approximately equal to 1 cd / m² of luminance (i.e. 0.0001 cd / cm²), that is: 1000 cd / m² ≈ 1000 mW / cm².

[0044] As mentioned above, the photometric irradiance of graphene thin film electroluminescence can reach 100~1000 mW / cm², and the distance between the electroluminescent layer 41 and the frame glue 50 is controlled within 5um, which can effectively assist the light curing effect of the frame glue 50.

[0045] In this embodiment, the color film substrate 10 close to the frame glue 50 side is provided with an electroluminescent layer 41. The color film substrate 10 is provided with a black matrix 11 and a plurality of color resistance layers 12, and the plurality of color resistance layers 12 are arranged in an array in the display area 110. The black matrix 11 is grid-shaped and separates the plurality of color resistance layers 12 from each other, and the electroluminescent layer 41 is arranged on the side of the black matrix 11 facing the frame glue 50. As shown in Figure 3 The display panel has a plurality of pixel units P arranged in an array in the display area 110, and the plurality of pixel units P include red pixel units Pr, green pixel units Pg, and blue pixel units Pb. The color resistance layer 12 includes a red color resistance 12r corresponding to the red pixel unit Pr, a green color resistance 12g corresponding to the green pixel unit Pg, and a blue color resistance 12b corresponding to the blue pixel unit Pb.

[0046] Furthermore, an electrostatic shielding layer 13 is provided on the color filter substrate 10. The electrostatic shielding layer 13 and the electroluminescent layer 41 are located on the same layer. The electrostatic shielding layer 13 and the electroluminescent layer 41 are made of different materials. For example, the electrostatic shielding layer 13 is made of transparent conductive materials such as indium tin oxide (ITO) or indium zinc oxide (IZO), and the electroluminescent layer 41 is made of graphene. The electrostatic shielding layer 13 covers the surfaces of the black matrix 11 and the color resist layer 12 facing the liquid crystal layer 30 and is grounded to eliminate static electricity generated on the color filter substrate 10. Optionally, a planarization layer covering the electrostatic shielding layer 13 and the electroluminescent layer 41 is provided on the color filter substrate 10 to achieve a planarization effect.

[0047] Furthermore, the electroluminescent layer 41 has a first electrode 411 and a second electrode 412 at opposite ends, with the first electrode 411 and the second electrode 412 being the positive and negative electrodes, respectively, thereby applying an electrical signal to the electroluminescent layer 41, causing the electroluminescent layer 41 to emit light.

[0048] like Figure 5 As shown, the array substrate 20 has multiple pixel units P formed by multiple scan lines 1 and multiple data lines 2 that are mutually insulated and intersecting on the side facing the liquid crystal layer 30. Each pixel unit P has a pixel electrode 22 and a thin-film transistor 3. The pixel electrode 22 is electrically connected to the data line 2 of the adjacent thin-film transistor 3 through the thin-film transistor 3. The thin-film transistor 3 includes a gate, an active layer, a drain, and a source. The gate is located on the same layer as the scan line 1 and is electrically connected. The gate and the active layer are isolated by an insulating layer. The source is electrically connected to the data line 2, and the drain is electrically connected to the pixel electrode 22 through a contact hole.

[0049] like Figure 1 As shown, in this embodiment, a common electrode 21 is also provided on the side of the array substrate 20 facing the liquid crystal layer 30. The common electrode 21 and the pixel electrode 22 are located on different layers and are insulated from each other by an insulating layer. The common electrode 21 can be located above or below the pixel electrode 22. Figure 1The diagram shows the common electrode 21 located below the pixel electrode 22. Preferably, the common electrode 21 is a planar electrode formed over the entire surface, and the pixel electrode 22 is a slit electrode formed within each pixel unit P to form a fringe field switching (FFS) mode. Of course, in other embodiments, the pixel electrode 22 and the common electrode 21 may be located on the same layer, but they are insulated from each other. Each of the pixel electrode 22 and the common electrode 21 may include multiple electrode strips, and the electrode strips of the pixel electrode 22 and the common electrode 21 are arranged alternately to form an in-plane switching (IPS) mode. Alternatively, in other embodiments, the array substrate 20 has a pixel electrode 22 on the side facing the liquid crystal layer 30, and the color filter substrate 10 has a common electrode 21 on the side facing the liquid crystal layer 30 to form a TN mode or a VA mode. For further details on the TN mode and VA mode, please refer to the prior art, which will not be repeated here.

[0050] Preferably, the liquid crystal layer 30 uses positive liquid crystal molecules, i.e., liquid crystal molecules with positive dielectric anisotropy. Initially, the positive liquid crystal molecules in the liquid crystal layer 30 are aligned parallel to the color filter substrate 10 and the array substrate 20, with the alignment direction of the positive liquid crystal molecules closer to the color filter substrate 10 parallel or antiparallel to the alignment direction of the positive liquid crystal molecules closer to the array substrate 20. Of course, in other embodiments, the liquid crystal layer 30 can also use negative liquid crystal molecules, which can be aligned perpendicular to the color filter substrate 10 and the array substrate 20, similar to the alignment method in VA display mode.

[0051] Furthermore, a first polarizer 61 is provided on the upper side of the display panel, and a second polarizer 62 is provided on the lower side of the display panel. The light transmission axis of the first polarizer 61 and the light transmission axis of the second polarizer 62 are perpendicular to each other.

[0052] The color filter substrate 10 and the array substrate 20 can be made of materials such as glass, acrylic, and polycarbonate. The electrostatic shielding layer 13, the common electrode 21, and the pixel electrode 22 can be made of materials such as indium tin oxide (ITO) or indium zinc oxide (IZO).

[0053] Figure 6 This is a schematic diagram illustrating the curing of the frame adhesive in Embodiment 1 of the present invention. Figure 6 As shown, this application also provides a method for manufacturing a display panel, used to manufacture the display panel as described above. The manufacturing method includes: The electroluminescent layer 41 is applied with an electric signal so that the electroluminescent layer 41 emits light towards the frame glue 50; meanwhile, the frame glue 50 is irradiated with UV light from the side of the array substrate 20 with the UV mask 80 as a shield. The light emitted by the electroluminescent layer 41 in the visible light range is used to cure the frame glue 50, and in combination with a normal UV curing process, the curing rate of the frame glue 50 can be greatly improved. The other manufacturing steps of the display panel can refer to the prior art, which will not be described here.

[0054] Figure 7 is a structural schematic diagram of the display device in a display state according to an embodiment of the present application. As shown in Figure 6 and Figure 7 The present application also provides a display device, which comprises the backlight module 70 and the display panel as described above, and the display panel is arranged on the light emitting side of the backlight module 70, and the backlight module 70 is used to provide a backlight source for the liquid crystal display panel. The backlight module 70 can be a side-in backlight module or a direct backlight module.

[0055] As shown in Figure 1 , when the display device is in a black state, no voltage is applied to the common electrode 21 and the pixel electrode 22, and the backlight module 70 is in a closed state. As shown in Figure 7 , when the display device is in a display state, the backlight module 70 is turned on, a common signal voltage is applied to the common electrode 21, and a gray scale voltage (0-255 gray scale) is applied to the pixel electrode 22. A strong horizontal electric field is formed between the common electrode 21 and the pixel electrode 22 to drive the liquid crystal molecules in the liquid crystal layer 30 to deflect in the horizontal direction. The light emitted by the backlight module 70 can pass through the second polarizer 62, the liquid crystal layer 30 and the first polarizer 61, thereby presenting a bright state. By applying different gray scale voltages to the pixel electrode 22 in different pixel units P, different pixel units P present different brightness, so as to control the display device to display a corresponding picture.

[0056] [Embodiment Two] Figure 8 is a structural schematic diagram of the display device in an initial state according to an embodiment of the present application. As shown in Figure 8 , the display panel, the display device and the manufacturing method provided by the embodiment two of the present application are basically the same as those in the display panel, the display device and the manufacturing method in the embodiment one of the present application (as shown in Figures 1 to 7 ), and the difference lies in that: In this embodiment, an electrostatic shielding layer 13 is provided on the color filter substrate 10. The electrostatic shielding layer 13 and the electroluminescent layer 41 are located on the same layer and are made of the same material and using the same etching process. That is, both the electrostatic shielding layer 13 and the electroluminescent layer 41 are made of graphene material, which simplifies the manufacturing process and reduces the manufacturing cost. Graphene material is a nano-two-dimensional material composed of carbon atoms. With its high transparency (transmittance ≈ 98%), high mechanical strength, excellent thermal conductivity and electron mobility, it can replace indium tin oxide (ITO) or indium zinc oxide (IZO). Since the electrostatic shielding layer 13 is grounded, it basically does not emit light or emits weak visible light. Moreover, the electrostatic shielding layer 13 is disposed on the entire surface of the color filter substrate 10, covering all pixel units P, and emits visible light. Therefore, it not only does not affect the display of the image, but can also improve the display brightness of the image.

[0057] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0058] [Example 3] Figure 9 This is a schematic diagram of the display device in its initial state according to Embodiment 3 of the present invention. Figure 9 As shown, the display panel, display device, and manufacturing method provided in Embodiment 3 of the present invention are the same as those in Embodiment 1. Figures 1 to 7 Example 2 Figure 8 The display panel, display device, and manufacturing method are basically the same in the following cases: In this embodiment, a reflective layer 14 is provided on the side of the color filter substrate 10 facing the frame adhesive 50. The reflective layer 14 corresponds to the electroluminescent layer 41 and is used to reflect the light emitted by the electroluminescent layer 41 toward the frame adhesive 50. Optionally, the reflective layer 14 is disposed between the electroluminescent layer 41 and the black matrix 11, and is in contact with the surfaces of the electroluminescent layer 41 and the black matrix 11. By providing the reflective layer 14 and using it to reflect the light emitted by the electroluminescent layer 41 toward the frame adhesive 50, the curing efficiency of the frame adhesive 50 can be further improved.

[0059] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1 and Embodiment 2, and will not be repeated here.

[0060] [Example 4] Figure 10 This is a schematic diagram of the display device in its initial state according to Embodiment 4 of the present invention. Figure 10 As shown, the display panel, display device, and manufacturing method provided in Embodiment 4 of the present invention are the same as those in Embodiment 1. Figures 1 to 7 Example 2Figure 8 ), the display panel, the display device and the manufacturing method in embodiment three ( Figure 9 ) are basically the same, except that: In this embodiment, the display panel is provided with a light condensing structure 15 between the electroluminescent layer 41 and the frame glue 50, the light condensing structure 15 corresponds to the electroluminescent layer 41 and is used for converging the light emitted by the electroluminescent layer 41 towards the frame glue 50. Optionally, the light condensing structure 15 is formed by setting a groove structure on the surface of the frame glue 50 towards the electroluminescent layer 41, so as to converge the light emitted by the electroluminescent layer 41 towards the frame glue 50, so as to further improve the curing efficiency of the frame glue 50.

[0061] Those skilled in the art should understand that the remaining structure and working principle of this embodiment are the same as those of embodiment one, embodiment two and embodiment three, and will not be repeated here.

[0062] [Embodiment five] Figure 11 is one of the structure schematic diagrams of the display device in the initial state in embodiment five of the application. Figure 12 is another structure schematic diagram of the display device in the initial state in embodiment five of the application. As shown in Figure 11 and Figure 12 , the display panel, the display device and the manufacturing method provided by embodiment five of the application are basically the same as those in embodiment one ( Figures 1 to 7 ), embodiment three ( Figure 9 ) and embodiment four ( Figure 10 ), except that: In this embodiment, the electroluminescent layer 41 is arranged on the side of the array substrate 20 close to the frame glue 50. The metal trace 23 is arranged on the array substrate 20, and the electroluminescent layer 41 is arranged on the side of the metal trace 23 close to the frame glue 50, so as to avoid that the metal trace 23 blocks the light emitted by the electroluminescent layer 41. Optionally, the electroluminescent layer 41 is arranged on the side of the array substrate 20 closest to the frame glue 50 and contacts the surface of the frame glue 50, so as to make the curing effect of the frame glue 50 better.

[0063] Optionally, as shown in Figure 11 , the pixel electrode 22 and the electroluminescent layer 41 are located in the same layer, and the pixel electrode 22 and the electroluminescent layer 41 are respectively made of different materials, for example, the pixel electrode 22 is made of transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), and the electroluminescent layer 41 is made of graphene material.

[0064] Of course, in another embodiment, as shown in Figure 12As shown, the pixel electrode 22 and the electroluminescent layer 41 are located in the same layer and are made of the same material and the same etching process, that is, the pixel electrode 22 and the electroluminescent layer 41 are both made of graphene material, thereby simplifying the manufacturing process and reducing the manufacturing cost. The graphene material is a two-dimensional nanometer material composed of carbon atoms, which can replace indium tin oxide (ITO) or indium zinc oxide (IZO) and the like due to its high transparency (transmittance ≈ 98%), high mechanical strength, excellent heat conduction performance and electron mobility. Since the pixel electrode 22 only applies a gray voltage and only has a current when charging and discharging, the pixel electrode 22 basically does not emit light or emits weak visible light; and each pixel unit P is provided with the pixel electrode 22 and emits visible light, so as to basically not affect the display of the picture and improve the display brightness of the picture.

[0065] Those skilled in the art should understand that the remaining structure and working principle of the embodiment are the same as those of Embodiment One, Embodiment Three and Embodiment Four, which will not be described here.

[0066] [Embodiment Six] Figure 13 is one of the structure schematic diagrams of the display device in the initial state in Embodiment Six of the present application. Figure 14 is another structure schematic diagram of the display device in the initial state in Embodiment Six of the present application. As shown in Figure 13 and Figure 14 Embodiment Six of the present application provides a display panel, a display device and a manufacturing method, which are basically the same as those in Embodiment One ( Figures 1 to 7 ), Embodiment Three ( Figure 9 ) and Embodiment Four ( Figure 10 ), and the difference lies in that: In the present embodiment, the array substrate 20 is provided with the electroluminescent layer 41 close to one side of the frame glue 50. The array substrate 20 is provided with the metal trace 23, and the electroluminescent layer 41 is arranged on the side of the metal trace 23 facing the frame glue 50, thereby avoiding that the metal trace 23 blocks the light emitted by the electroluminescent layer 41.

[0067] Alternatively, as shown in Figure 13 , the common electrode 21 and the electroluminescent layer 41 are located in the same layer, and the common electrode 21 and the electroluminescent layer 41 are respectively made of different materials, for example, the common electrode 21 is made of transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), and the electroluminescent layer 41 is made of graphene material.

[0068] Of course, in another embodiment, as shown in Figure 14As shown, the common electrode 21 and the electroluminescent layer 41 are located on the same layer and are made using the same material and the same etching process. That is, both the common electrode 21 and the electroluminescent layer 41 are made of graphene, which simplifies the manufacturing process and reduces manufacturing costs. Graphene is a nano-two-dimensional material composed of carbon atoms. With its high transparency (transmittance ≈ 98%), high mechanical strength, excellent thermal conductivity, and electron mobility, it can replace indium tin oxide (ITO) or indium zinc oxide (IZO). Since the common electrode 21 applies a common signal voltage, it basically does not emit light or emits only weak visible light. Moreover, the common electrode 21 is disposed on the entire surface of the array substrate 20, covering all pixel units P, and emits visible light. Therefore, it not only does not affect the display of the image but can also improve the display brightness.

[0069] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, Embodiment 3, and Embodiment 4, and will not be repeated here.

[0070] [Example 7] Figure 15 This is one of the structural schematic diagrams of the display device in its initial state in Embodiment 7 of the present invention. Figure 16 This is the second schematic diagram of the display device in its initial state in Embodiment 7 of the present invention. Figure 17 This is the third schematic diagram of the display device in its initial state in Embodiment 7 of the present invention. Figure 18 This is the fourth schematic diagram of the display device in its initial state in Embodiment Seven of the present invention. Figures 15 to 18 As shown, the display panel, display device, and manufacturing method provided in Embodiment 7 of the present invention are the same as those in Embodiment 1. Figures 1 to 7 Example 5 Figure 11 and Figure 12 Example 6 Figure 13 and Figure 14 The display panel, display device, and manufacturing method are basically the same in the following cases: In this embodiment, both the color filter substrate 10 and the array substrate 20 are provided with an electroluminescent layer 41 on the side near the frame adhesive 50, which can increase the light emission of the electroluminescent layer 41 and improve the curing efficiency of the frame adhesive 50.

[0071] like Figure 15As shown in FIG. 1, the color filter substrate 10 is provided with an electrostatic shielding layer 13, the electrostatic shielding layer 13 and the electroluminescent layer 41 are located in the same layer and are made of different materials, for example, the electrostatic shielding layer 13 is made of transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), and the electroluminescent layer 41 is made of graphene material. The pixel electrode 22 and the electroluminescent layer 41 are located in the same layer and are made of different materials, for example, the pixel electrode 22 is made of transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), and the electroluminescent layer 41 is made of graphene material.

[0072] In another embodiment, as shown in FIG. 2, the color filter substrate 10 is provided with an electrostatic shielding layer 13, the electrostatic shielding layer 13 and the electroluminescent layer 41 are located in the same layer and are made of the same material and are etched by the same etching process, that is, the electrostatic shielding layer 13 and the electroluminescent layer 41 are both made of graphene material, thereby simplifying the manufacturing process and reducing the manufacturing cost. The pixel electrode 22 and the electroluminescent layer 41 are located in the same layer and are made of the same material and are etched by the same etching process, that is, the pixel electrode 22 and the electroluminescent layer 41 are both made of graphene material, thereby simplifying the manufacturing process and reducing the manufacturing cost. Of course, the electroluminescent layer 41 on the side of the array substrate 20 can also be located in the same layer as the common electrode 21 and made of the same material and etched by the same etching process. Figure 16 In another embodiment, as shown in FIG. 3, the color filter substrate 10 is provided with a reflective layer 14 on the side facing the frame glue 50, the reflective layer 14 corresponds to the electroluminescent layer 41 and is used to reflect the light emitted by the electroluminescent layer 41 towards the frame glue 50. Optionally, the reflective layer 14 is arranged between the electroluminescent layer 41 and the black matrix 11 and is in contact with the surface of the electroluminescent layer 41 and the black matrix 11. By arranging the reflective layer 14 and using it to reflect the light emitted by the electroluminescent layer 41 towards the frame glue 50, the curing efficiency of the frame glue 50 can be further improved.

[0073] Figure 17 In another embodiment, as shown in FIG. 4, the display panel is provided with a light condensing structure 15 between the electroluminescent layer 41 and the frame glue 50, the light condensing structure 15 corresponds to the electroluminescent layer 41 and is used to converge the light emitted by the electroluminescent layer 41 towards the frame glue 50. Optionally, the light condensing structure 15 is formed by arranging a groove structure on the surface of the frame glue 50 facing the electroluminescent layer 41, thereby converging the light emitted by the electroluminescent layer 41 towards the frame glue 50 to further improve the curing efficiency of the frame glue 50. Among them, since the color filter substrate 10 and the array substrate 20 are both provided with the electroluminescent layer 41 on the side close to the frame glue 50, the light condensing structure 15 is arranged on both the upper and lower sides of the frame glue 50.

[0074] In another embodiment, as shown in FIG. 4, the display panel is provided with a light condensing structure 15 between the electroluminescent layer 41 and the frame glue 50, the light condensing structure 15 corresponds to the electroluminescent layer 41 and is used to converge the light emitted by the electroluminescent layer 41 towards the frame glue 50. Optionally, the light condensing structure 15 is formed by arranging a groove structure on the surface of the frame glue 50 facing the electroluminescent layer 41, thereby converging the light emitted by the electroluminescent layer 41 towards the frame glue 50 to further improve the curing efficiency of the frame glue 50. Among them, since the color filter substrate 10 and the array substrate 20 are both provided with the electroluminescent layer 41 on the side close to the frame glue 50, the light condensing structure 15 is arranged on both the upper and lower sides of the frame glue 50. Figure 18 In another embodiment, as shown in FIG. 4, the display panel is provided with a light condensing structure 15 between the electroluminescent layer 41 and the frame glue 50, the light condensing structure 15 corresponds to the electroluminescent layer 41 and is used to converge the light emitted by the electroluminescent layer 41 towards the frame glue 50. Optionally, the light condensing structure 15 is formed by arranging a groove structure on the surface of the frame glue 50 facing the electroluminescent layer 41, thereby converging the light emitted by the electroluminescent layer 41 towards the frame glue 50 to further improve the curing efficiency of the frame glue 50. Among them, since the color filter substrate 10 and the array substrate 20 are both provided with the electroluminescent layer 41 on the side close to the frame glue 50, the light condensing structure 15 is arranged on both the upper and lower sides of the frame glue 50.​

[0075] Those skilled in the art should understand that the remaining structure and working principle of the embodiment are the same as those of Embodiment 1, Embodiment 5 and Embodiment 6, and will not be repeated here.

[0076] In this article, the orientation words such as up, down, left, right, front, back and the like are defined according to the position of the structure in the drawing and the position of the structure relative to each other in the drawing, just to express the technical solution clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application. It should also be understood that the terms "first" and "second" used herein are only used for name distinction and do not limit the quantity and order.

[0077] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present application are still within the protection scope of the present application.

Claims

1. A display panel, characterized in that, It includes a color filter substrate (10), an array substrate (20) disposed opposite to the color filter substrate (10), and a liquid crystal layer (30) located between the color filter substrate (10) and the array substrate (20). A frame adhesive (50) is provided between the color filter substrate (10) and the array substrate (20), and the frame adhesive (50) corresponds to the non-display area (120). At least one of the color filter substrate (10) and the array substrate (20) has an electroluminescent layer (41) on the side near the frame adhesive (50), and the electroluminescent layer (41) corresponds to the frame adhesive (50); When the frame adhesive (50) is cured, an electrical signal is applied to the electroluminescent layer (41) so that the electroluminescent layer (41) emits light toward the frame adhesive (50).

2. The display panel according to claim 1, characterized in that, The color filter substrate (10) has a reflective layer (14) on the side facing the frame adhesive (50). The reflective layer (14) corresponds to the electroluminescent layer (41) and is used to reflect the light emitted by the electroluminescent layer (41) toward the frame adhesive (50).

3. The display panel according to claim 1, characterized in that, The display panel has a light-concentrating structure (15) between the electroluminescent layer (41) and the frame adhesive (50). The light-concentrating structure (15) corresponds to the electroluminescent layer (41) and is used to converge the light emitted by the electroluminescent layer (41) toward the frame adhesive (50).

4. The display panel according to any one of claims 1-3, characterized in that, The color filter substrate (10) has an electroluminescent layer (41) on the side near the frame adhesive (50); The color filter substrate (10) is provided with a black matrix (11) and a plurality of color resist layers (12). The plurality of color resist layers (12) are arranged in an array in the display area (110). The black matrix (11) is grid-shaped and the plurality of color resist layers (12) are spaced apart from each other. The electroluminescent layer (41) is disposed on the side of the black matrix (11) facing the frame adhesive (50).

5. The display panel according to claim 4, characterized in that, The color filter substrate (10) is provided with an electrostatic shielding layer (13), which is located on the same layer as the electroluminescent layer (41) and is made of the same material and the same etching process.

6. The display panel according to any one of claims 1-3, characterized in that, An electroluminescent layer (41) is provided on the side of the array substrate (20) near the frame adhesive (50); The array substrate (20) has metal traces (23), and the electroluminescent layer (41) is disposed on the side of the metal traces (23) facing the frame adhesive (50).

7. The display panel according to claim 6, characterized in that, The array substrate (20) is provided with pixel electrodes (22) arranged in a positive array and a common electrode (21) cooperating with the pixel electrodes (22); The pixel electrode (22) and the electroluminescent layer (41) are located on the same layer and are made of the same material and the same etching process, or the common electrode (21) and the electroluminescent layer (41) are located on the same layer and are made of the same material and the same etching process.

8. The display panel according to any one of claims 1-3, characterized in that, The electroluminescent layer (41) is made of graphene material.

9. A method for manufacturing a display panel, characterized in that, The method for manufacturing a display panel as described in any one of claims 1-8 includes: An electrical signal is applied to the electroluminescent layer (41) so that the electroluminescent layer (41) emits light toward the frame adhesive (50). At the same time, the frame adhesive (50) is irradiated with UV light from one side of the array substrate (20) using a UV photomask (80) as a shield.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-8.

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