Display panel, display module and mobile terminal
By designing obtuse-angled cut surfaces and incorporating black material into the OLED display panel, the problem of carbon residue during the cutting process was solved, thus improving the panel's cleanliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-21
- Publication Date
- 2026-03-17
AI Technical Summary
During the cutting process of existing OLED display panels, the black matrix is carbonized due to the high temperature of the laser, and carbon debris remains in the gaps at the edge of the display panel, affecting its cleanliness.
The angle between the cut surface of the display panel and the substrate is obtuse. The distance between the film layer boundary and the substrate boundary gradually increases near the cut surface. A black material is placed near the cut surface, and the organic material is carbonized by high temperature using a laser, so that carbon dust accumulates near the substrate to avoid residue.
By designing a beveled cut surface and using black material, carbon dust residue is effectively prevented from remaining on the side of the display panel near the substrate, thus improving the cleanliness of the product.
Smart Images
Figure CN114300482B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and in particular to a display panel and display module, and a mobile terminal. Background Technology
[0002] OLED (Organic Light-Emitting Diode) panels have advantages such as being thin and light, having a wide viewing angle, and being energy-saving, making them the mainstream of future development.
[0003] In existing OLED display panels, to reduce the panel thickness, depolarization technology can be used to manufacture the OLED panel, which replaces the existing polarizer with a color resist layer and a black matrix layer. However, during panel cutting, lasers are used to cut the black matrix around the display panel. The high temperature of the laser causes the black matrix to carbonize, and the carbonized carbon particles may remain in the edge gaps of the display panel, affecting the cleanliness of the display panel.
[0004] Therefore, there is an urgent need for a display panel to solve the above-mentioned technical problems. Summary of the Invention
[0005] This application provides a display panel, display module, and mobile terminal to solve the technical problem of carbon dust in the edge gaps of existing display panels.
[0006] To address the above issues, the technical solution provided in this application is as follows:
[0007] This application provides a display panel, which includes:
[0008] The substrate includes a first boundary on the side of the cut surface near the display panel;
[0009] A light-emitting device layer is disposed on the substrate; and
[0010] A color filter layer is disposed on the light-emitting device layer;
[0011] In the top view direction of the display panel, the distance between the film layer boundary near the cut surface and the first boundary gradually increases along the direction from the substrate to the color filter layer in the display panel, and the angle between the cut surface and the substrate is an obtuse angle.
[0012] In the display panel of this application, the angle between the cut surface and the substrate ranges from 100° to 120°.
[0013] In the display panel of this application, the display panel includes multiple organic layers, and at least one of the organic layers has a black material disposed on the side near the cut surface.
[0014] In the display panel of this application, among the multiple organic layers of the display panel, the mass of the black material on the organic layer closer to the substrate is greater than the mass of the black material on the organic layer farther from the substrate.
[0015] In the display panel of this application, the color filter layer includes a light-shielding layer and a plurality of color resist units embedded in the light-shielding layer, and the light-shielding layer includes a first light-shielding portion disposed near the cut surface of the display panel;
[0016] The first light-shielding portion includes a second boundary near the side of the cut surface, and the distance between the second boundary and the cut surface is greater than or equal to 0 and less than or equal to 150 micrometers.
[0017] In the display panel of this application, when the distance from the second boundary to the cutting surface is equal to 0, the second boundary and the cutting surface coincide.
[0018] The light-shielding layer further includes a second light-shielding portion away from the cut surface, and the thickness of the second light-shielding portion is greater than the thickness of the first light-shielding portion.
[0019] In the display panel of this application, when the second boundary is set away from the cutting surface, the area of the first light-shielding part near the cutting surface is provided with a first notch, and the first notch faces the cutting surface.
[0020] In the display panel of this application, the display panel further includes a first planarization layer disposed on the color filter layer, the first planarization layer covering the color filter layer, and the thickness of the first planarization layer being less than or equal to the thickness of the second light-shielding portion.
[0021] This application also proposes a display module, which includes the above-mentioned display panel and a cover layer located on the display panel;
[0022] The orthographic projection of the display panel onto the cover plate layer is located within the cover plate layer.
[0023] This application also proposes a mobile terminal, which includes a terminal body and the aforementioned display module, wherein the terminal body and the display module are combined into one unit.
[0024] Beneficial Effects: This application discloses a display panel, a display module, and a mobile terminal. The display panel includes a substrate, a light-emitting device layer disposed on the substrate, and a color filter layer disposed on the light-emitting device layer. The substrate includes a first boundary near the cut surface of the display panel. In the top view direction of the display panel, the distance between the film layer boundary near the cut surface and the first boundary in the direction from the substrate to the color filter layer gradually increases. The angle between the cut surface and the substrate is an obtuse angle. By setting the cut surface of the edge of the display panel as an inclined surface away from the display panel, the carbon dust generated during the cutting process of the display panel accumulates near the substrate, avoiding the residue of carbon dust near the substrate and improving the cleanliness of the product. Attached Figure Description
[0025] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.
[0026] Figure 1 A cross-sectional view of the existing display panel;
[0027] Figure 2 An enlarged view of the abnormal area on the existing display panel;
[0028] Figure 3 This is a schematic diagram of the cutting process of the display panel in this application;
[0029] Figure 4 for Figure 3 The first type of cross-sectional view of the mid-section AA;
[0030] Figure 5 for Figure 4 Detailed structural diagram of the middle part of the film layer;
[0031] Figure 6 This is a schematic diagram of the Gaussian spot of a laser beam.
[0032] Figure 7 for Figure 3 The first cross-sectional view of section AA before cutting;
[0033] Figure 8 for Figure 3 The second cross-sectional view of section AA;
[0034] Figure 9 for Figure 3 The third cross-sectional view of section AA;
[0035] Figure 10 for Figure 3 The second cross-sectional view of section AA before cutting;
[0036] Figure 11 This is a schematic diagram of the structure of the display module in this application. Detailed Implementation
[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0038] Please see Figure 1 , Figure 1 This is a diagram of the film layer structure after cutting an existing display panel. In existing OLED display panels, to reduce the panel thickness, a depolarization technique can be used, replacing the existing polarizer with a color resist layer and a black matrix layer. To ensure flatness, a first planarization layer is typically coated on the color filter layer, and a protective layer is bonded to the first planarization layer for protection. However, during panel cutting, the temperature of the laser L may carbonize the black light-shielding layer 71 near the cutting surface 200. Simultaneously, due to the low peel force between the first protective layer 81 and the first planarization layer 80, the carbonized black material can seep into the gap between them, affecting the cleanliness of the display panel. Please refer to [link to relevant documentation] for details. Figure 2 The structure of the circled area in the figure is as follows: Figure 1 The black unevenness in the central area BB. Therefore, this application proposes a display panel to solve the above-mentioned technical problem.
[0039] Please see Figures 3 to 11 This application provides a display panel 100, which may include a substrate 10, a light-emitting device layer 30 and a color filter layer 70. The light-emitting device layer 30 is disposed on the substrate 10; the color filter layer 70 is disposed on the light-emitting device layer 30. The substrate 10 includes a first boundary N1 on the side near the cut surface 200 of the display panel 100.
[0040] In this embodiment, in the top view direction of the display panel 200, the distance between the film layer boundary near the cutting surface 200 and the first boundary N1 in the direction from the substrate 10 to the color filter layer 70 gradually increases, and the angle m between the cutting surface 200 and the substrate 10 is an obtuse angle.
[0041] It should be noted that the angle m between the cut surface 200 and the substrate 10 is... Figure 4 The actual included angle formed by the cut surface 200 and the substrate 10, wherein the cut surface 200 is inclined to the side away from the display panel 100.
[0042] In this embodiment, the angle m between the cut surface 200 and the substrate 10 ranges from 100° to 120°.
[0043] This application sets the cut surface 200 of the edge of the display panel 100 to an inclined surface away from the display panel 100, so that the carbon dust generated during the cutting process of the display panel 100 accumulates on the side close to the substrate 10, avoiding the residue of carbon dust on the side close to the substrate 10 and improving the cleanliness of the product.
[0044] The technical solution of this application will now be described in conjunction with specific embodiments.
[0045] Please see Figure 3 , Figure 3 The dashed line in the middle represents the cutting groove GG of the target panel, and the shape enclosed by the cutting groove GG is the outer shape of the display panel 100.
[0046] Please see Figure 4 and Figure 5 , Figure 4 for Figure 3 The first type of cross-sectional view of mid-section AA. Figure 5 for Figure 4 Detailed structural diagram of the middle part of the membrane layer.
[0047] The display panel 100 may include a thin-film transistor array layer 20 disposed on the substrate 10, a pixel definition layer 40 disposed on the thin-film transistor array layer 20, a light-emitting device layer 30 disposed on the same layer as the pixel definition layer 40, an encapsulation layer 50 disposed on the pixel definition layer 40, a touch layer 60 disposed on the encapsulation layer 50, a color filter layer 70 disposed on the touch layer 60, a first planarization layer 80 disposed on the color filter layer 70, and a first protective layer 81 disposed on the first planarization layer 80.
[0048] In this embodiment, the substrate 10 can be made of materials such as glass, quartz, or polyimide.
[0049] In this embodiment, please refer to Figure 5 The thin-film transistor array layer 20 may include multiple thin-film transistors 21. These thin-film transistors 21 may be etch-block type, back-channel etch type, or, depending on the position of the gate and active layer, may be classified as bottom-gate thin-film transistors, top-gate thin-film transistors, etc. There are no specific limitations. For example, Figure 5The thin-film transistor 21 shown is a top-gate thin-film transistor. The thin-film transistor 21 may include a light-shielding metal layer 211 disposed on the substrate 10, a buffer layer 212 disposed on the light-shielding metal layer 211, an active layer 213 disposed on the buffer layer 212, a gate insulating layer 214 disposed on the active layer 213, a gate layer 215 disposed on the gate insulating layer 214, an inter-insulating layer 216 disposed on the gate layer 215, a source-drain layer 217 disposed on the inter-insulating layer 216, and a second planarization layer 218 disposed on the source-drain layer 217.
[0050] In this embodiment, please refer to Figure 5 The display panel 100 may further include an anode layer 31 disposed on the second planarization layer 218, a light-emitting layer 33 disposed on the anode layer 31, and a cathode layer 32 disposed on the light-emitting layer 33. The anode layer 31 includes a plurality of anodes 311, the pixel definition layer 40 includes a plurality of pixel openings corresponding one-to-one with the plurality of anodes 311, and each pixel opening exposes the upper surface of one anode 311. The light-emitting layer 33 may include a plurality of light-emitting pixels corresponding one-to-one with the plurality of anodes 311.
[0051] In this embodiment, please refer to Figure 4 The encapsulation layer 50 covers the pixel definition layer 40 and continuously covers multiple pixel openings and multiple light-emitting pixels; wherein, the encapsulation layer 50 may include at least a first inorganic encapsulation layer, a first organic encapsulation layer and a second inorganic encapsulation layer stacked on the pixel definition layer 40.
[0052] In this embodiment, please refer to Figure 4 The touch layer 60 may include a first touch metal layer and a second touch metal layer disposed on the encapsulation layer 50, and an insulating layer disposed between the first touch metal layer and the second touch metal layer.
[0053] In this embodiment, the touch layer 60 provided in this application embodiment may be mutually capacitive or self-capacitive.
[0054] In this embodiment, please refer to Figure 4 The color filter layer 70 can be disposed on the touch layer 60. The color filter layer 70 may include a light-shielding layer 71 and a plurality of color resist units 72 of different colors embedded in the light-shielding layer 71. Each color resist unit 72 corresponds to a light-emitting pixel, and the color of the color resist unit 72 is the same as the light emitted by the corresponding light-emitting pixel.
[0055] In this embodiment, please refer to Figure 4The light-emitting layer 33 includes a first light-emitting pixel 331 that emits a first color, a second light-emitting pixel 332 that emits a second color, and a third light-emitting pixel 333 that emits a third color. The color filter layer 70 includes a first color resist unit 721, a second color resist unit 722, and a third color resist unit 723. The first light-emitting pixel 331 corresponds to the first color resist unit 721, the second light-emitting pixel 332 corresponds to the second color resist unit 722, and the third light-emitting pixel 333 corresponds to the third color resist unit 723.
[0056] In this embodiment, the first light-emitting pixel 331 is a red light-emitting pixel, the second light-emitting pixel 332 is a green light-emitting pixel, the third light-emitting pixel 333 is a blue light-emitting pixel, the first color resist unit 721 is a red color resist, the second color resist unit 722 is a green color resist, and the third color resist unit 723 is a blue color resist.
[0057] In this embodiment, the orthographic projection of the first light-emitting pixel 331 onto the first color resist unit 721 is located within the first color resist unit 721, the orthographic projection of the second light-emitting pixel 332 onto the second color resist unit 722 is located within the second color resist unit 722, and the orthographic projection of the third light-emitting pixel 333 onto the third color resist unit 723 is located within the third color resist unit 723.
[0058] In this embodiment, the material of the first planarization layer 80 can be the same organic material as that of the second planarization layer 218.
[0059] In this embodiment, the material of the first protective layer 81 can be a flexible material such as polyethylene terephthalate.
[0060] In this embodiment, the display panel 100 may further include a back plate 90 and a second protective layer 91 attached to the back plate 90. The back plate 90 is disposed on the side of the substrate 10 away from the light emission direction, and the second protective layer is located on the side of the back plate 90 away from the light emission direction.
[0061] In this embodiment, the second protective layer 91 has the same function as the first protective layer 81, and the material of the second protective layer 91 can be the same as the material of the first protective layer 81.
[0062] In this embodiment, the peel force between the first protective layer 81 and the first planarization layer 80 is 1 to 4 g / inch, and the peel force between the second protective layer 91 and the backing plate 90 is 45 to 55 g / inch.
[0063] In this embodiment, the first protective layer 81 and the second protective layer 91 are intermediate products in the manufacturing process of the display panel 100. They exist only in the middle of the process to protect the first planarization layer 80 and other film layer structures below it. In the final product, the first protective layer 81 and the second protective layer 91 will be peeled off.
[0064] Please see Figure 4 The display panel 100 may include a display area 300 and a non-display area 400 located around the display area 300. At the same time, a cutting area 500 and a cutting product 600 left by cutting are provided on the side away from the non-display area 400.
[0065] During the cutting process, the display panel 100 needs to be cut using a laser L, for example... Figure 4 In the structure, the product to the left of the cutting zone 500 is the target product, and the product to the right of the cutting zone 500 is the useless cutting product 600.
[0066] In this embodiment, since the laser spot L is a Gaussian spot, please refer to [link / reference needed]. Figure 6 As shown, the laser L has the characteristic of high energy in the middle and decreasing energy around the edges. Therefore, the cross-section of the film cut by the laser L may be triangular.
[0067] In this embodiment, the high temperature of the laser L will carbonize the organic material, and the peel force between the first protective layer 81 and the first planarization layer 80 is less than the peel force between the second protective layer 91 and the backplate 90. Therefore, if cutting starts from the light-emitting direction side of the display panel 100, carbon debris generated by the laser L may remain between the first protective layer 81 and the first planarization layer 80. Please refer to... Figure 4 This application utilizes a laser L to cut from the backlight side of the display panel 100, and uses gravity to cause the carbon debris generated by the laser L to accumulate away from the light-emitting side of the display panel 100. Due to the large peel force between the second protective layer 91 and the back plate 90, the carbon debris can only remain on the surface of the cut surface 200 and will not enter between the second protective layer 91 and the back plate 90. Furthermore, some of the residual carbon debris is removed by gravity or subsequent edge cleaning.
[0068] In this embodiment, the cross-section of the film layer after laser cutting is an equilateral triangle shape.
[0069] Please refer to the display panel 100 in this application. Figure 4In the direction from the substrate 10 to the color filter layer 70, the distance between the film layer boundary and the first boundary N1 on the side of the display panel 100 near the cut surface 200 gradually increases; that is, in the direction from the substrate 10 to the color filter layer 70, without considering the patterning of each film layer, the outer contour area of the film layer in the display panel 100 gradually increases.
[0070] In this embodiment, besides the inherent characteristics of the laser L, the film layer near the light-emitting direction contains more organic materials, such as the first planarization layer 80, color filter layer 70, and pixel definition layer 40. The high temperature of the laser L will carbonize these organic materials, producing carbon dust that affects the cleanliness of the panel. Therefore, the outer contour area of the film layer near the light-emitting direction can be larger than that of the film layer away from the light-emitting direction. That is, the distance between the boundary of the film layer near the light-emitting direction and the first boundary N1 is smaller than that of the film layer away from the light-emitting direction. The distance between the boundary of the film layer and the first boundary N1, i.e., cutting the film layer away from the light-emitting side first, not only has a larger opening, but also allows the generated carbon debris to fall directly from the bottom opening by gravity, avoiding the accumulation of carbon debris. In contrast, for the scheme of cutting from the light-emitting side, since the film layer near the light-emitting direction has more organic material, the generated carbon debris will only fall from the side away from the light-emitting side during the entire cutting process, resulting in more carbon debris remaining on the surface of the film layer. Therefore, the technical solution of this application can fundamentally solve the problem of carbon debris residue.
[0071] During the cutting process, as the laser L moves along the light emission direction of the display panel 100, the cutting surface 200 of the display panel 100 becomes a slope with a certain tilt angle due to the influence of the laser L itself.
[0072] In this embodiment, the angle m between the cut surface 200 and the substrate 10 can range from 100° to 120°, and this angle m can be the actual angle between the cut surface 200 and the substrate 10. Due to the inherent characteristics of the laser L, the angle m between the cut surface 200 and the substrate 10 can be made as close to 90° as possible by controlling the energy of the laser L. However, currently, due to process limitations, only 120° can be achieved. In the future, edge grinding or other treatments can be used to make the angle between the side of the display panel 100 and the substrate 10 closer to 90°.
[0073] In the display panel 100 of this application, the display panel 100 includes multiple organic layers, and at least one of the organic layers is provided with a black material on the side near the cut surface 200.
[0074] In this embodiment, since the display panel 100 includes organic layers such as a first planarization layer 80, a color filter layer 70, an organic encapsulation layer, and a pixel definition layer 40, the high temperature of the laser L may cause the organic material to carbonize. Therefore, after cutting, carbonized carbon debris may remain at the edge of the aforementioned film layers. This carbon debris cannot be completely eliminated during the subsequent edge grinding process and may remain on the cut surface 200. Simultaneously, the carbonized organic layer adheres to the sides of the organic layer, providing some protection to the organic material in the display area 300, such as preventing water and oxygen penetration.
[0075] In this embodiment, since the generated carbon dust will fall away from the light-emitting side of the display panel 100 due to gravity, more carbon dust may remain on the side away from the light-emitting direction of the display panel 100. That is, the mass of the black material on the organic layer on the side closer to the substrate 10 is greater than the mass of the black material on the organic layer on the side away from the substrate.
[0076] In the display panel 100 of this application, the light-shielding layer 71 includes a first light-shielding portion 711 near the cut surface 200 of the display panel 100. The first light-shielding portion 711 includes a second boundary N2 near the cut surface 200. The distance between the second boundary N2 and the cut surface 200 is greater than or equal to 0 and less than or equal to 150 micrometers.
[0077] Please see Figure 4 When the distance from the second boundary N2 to the cutting surface is equal to 0, the second boundary N2 and the cutting surface coincide. (See also...) Figure 7 , Figure 7 for Figure 4 The cross-sectional view of the display panel 100 before it is cut shows that the first light-shielding part 711 extends from the non-display area 400 to the cutting area 500. The laser L comes into direct contact with the first light-shielding part 711 during cutting, and the black carbon dust generated by the two will fall from the bottom of the display panel 100 due to gravity.
[0078] Please refer to the display panel 100 in this application. Figure 8 The light-shielding layer 71 further includes a second light-shielding portion 712 away from the cut surface 200, and the thickness of the second light-shielding portion 712 may be greater than the thickness of the first light-shielding portion 711.
[0079] In this embodiment, the light-shielding layer 71 may include a second light-shielding part 712 disposed in the display area 300 and a first light-shielding part 711 disposed in the non-display area 400. Since the first light-shielding part 711 is disposed close to the cutting surface 200, when the display panel 100 is cut, the distance between the boundary of the first light-shielding part 711 and the laser L with a high temperature is small, and there is a possibility that the laser L carbonizes the boundary of the first light-shielding part 711. However, by reducing the thickness of the first light-shielding part 711, this application can reduce the generation of carbon dust when the first light-shielding part 711 is carbonized.
[0080] exist Figure 4 Based on this, since the high temperature of the laser L has a certain carbonization effect on organic materials, this application separates the light-shielding material that may be carbonized from the cutting area 500.
[0081] Please refer to the display panel 100 in this application. Figure 9 The display panel 100 further includes a first planarization layer 80 disposed on the color filter layer 70. The first planarization layer 80 covers the color filter layer 70. The first planarization layer 80 can cover the first light-shielding portion 711 and extend towards the cutting surface 200. The second boundary N2 of the first light-shielding portion is disposed away from the cutting surface.
[0082] In this embodiment, the distance between the second boundary N2 and the cutting surface 200 is less than or equal to 150 micrometers.
[0083] Please see Figure 9 The light-shielding layer 71 may also have a first notch 710 in the area near the cut surface 200 of the display panel 100, with the first notch 710 facing the cut surface 200; at the same time, the first flattening layer 80 may have a second notch 810 in the area near the cut surface 200, with the second notch 810 facing the cut surface 200.
[0084] Please see Figure 9 Because the thicknesses of the color filter unit 72 and the light-shielding layer 71 are inconsistent, the flatness of the color filter layer 70 is low after the color filter process is completed. Therefore, the first flattening layer 80 needs to be set on the color filter layer 70. At the same time, since the first flattening layer 80 is made of organic material, the material of the flattening layer can also be carbonized to form black carbon dust when the laser L cuts. Therefore, the flattening layer material cannot be set on the side of the first flattening layer 80 close to the cutting surface 200.
[0085] Please see Figure 10 , Figure 10This is a cross-sectional view of the display panel 100 before cutting, section AA. Both the light-shielding layer 71 and the first planarization layer 80 are hollowed out on the side near the cutting kerf GG. Since both the first planarization layer 80 and the light-shielding layer 71 can be made of photoresist-type organic materials, this hollowed-out area can be formed using a photomask process, for example, by exposure and development processes, to hollow out the edges of the first planarization layer 80 and the light-shielding layer 71 so that the boundaries of the first planarization layer 80 and the light-shielding layer 71 are far away from the cutting kerf GG.
[0086] In this embodiment, the second notch 810 corresponds to the first notch 710, and the area of the second notch 810 can be greater than or equal to the area of the first notch 710, so as to further increase the distance between the boundary of the second notch 810 and the cutting surface 200.
[0087] This application forms a second notch 810 in the region of the first planar layer 80 near the cutting surface 200, so that the boundary of the first planar layer 80 is far away from the cutting surface 200. Even if the boundary of the first planar layer 80 is far away from the cutting path GG, the organic material constituting the first planar layer 80 is prevented from being carbonized by the high temperature of the laser L.
[0088] Please refer to the display panel 100 in this application. Figure 4 The thickness of the first planarization layer 80 can be less than or equal to the thickness of the second light-shielding portion 712. Since the first planarization layer 80 is disposed close to the cutting surface 200, the thickness of the first planarization layer 80 can be reduced to avoid the proportion of the first planarization layer 80 being carbonized by the laser L.
[0089] In this embodiment, since the first flattening layer 80 is mainly used to flatten the surface of the uneven color filter layer 70, the first flattening layer 80 only needs to ensure the flatness of the surface of the color filter layer 70. That is, the minimum thickness of the first flattening layer 80 is the difference between the thickness of the color resist unit 72 and the light-shielding layer 71, so as to ensure that the thickness of the area corresponding to the light-shielding layer 71 is the same as the thickness of the area corresponding to the color resist unit 72.
[0090] This application also proposes a display module 700, please refer to... Figure 11 The display module 700 includes the aforementioned display panel 100 and a cover plate layer CG located on the display panel 100; the orthographic projection of the display panel 100 on the cover plate layer CG is located within the cover plate layer CG.
[0091] In this embodiment, with Figure 4 Compared to the structure in, Figure 11 The structure in Figure 4The first protective layer 81 and the second protective layer 91 are removed. At the same time, the display panel 100 can bond the first planarization layer 80 and the cover layer CG together with optical adhesive.
[0092] In this embodiment, the cover plate layer CG mainly serves to protect the panel structure below. Therefore, in the top view direction of the display module 700, the outer boundary of the cover plate layer CG should be larger than the outer boundary of the display panel 100.
[0093] This application also proposes a mobile terminal, which includes a terminal body and the aforementioned display module, wherein the terminal body and the display module are integrated into one unit. The terminal body may be a circuit board or other device bonded to the display module. The mobile terminal may include electronic devices such as mobile phones, televisions, and laptops.
[0094] This application discloses a display panel, a display module, and a mobile terminal. The display panel includes a substrate, a light-emitting device layer disposed on the substrate, and a color filter layer disposed on the light-emitting device layer. The substrate includes a first boundary near the cut surface of the display panel. In the top view direction of the display panel, the distance between the film layer boundary near the cut surface and the first boundary in the direction from the substrate to the color filter layer gradually increases. The angle between the cut surface and the substrate is an obtuse angle. This application sets the cut surface of the edge of the display panel as an inclined surface away from the display panel, so that the carbon dust generated during the cutting process of the display panel accumulates near the substrate, avoiding the residue of carbon dust near the substrate and improving the cleanliness of the product.
[0095] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0096] The above provides a detailed description of a display panel, display module, and mobile terminal provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A display panel, characterized by, The display module comprises a display panel and a cover layer located on the display panel. The display panel comprises a substrate, a light-emitting device layer, and a color film layer. The substrate comprises a first boundary close to a cutting surface of the display panel, the cutting surface forms an obtuse angle with the substrate. The light-emitting device layer is arranged on the substrate. The color film layer is arranged on a side of the light-emitting device layer away from the substrate, and comprises a light-shielding layer and a plurality of color resistance units embedded in the light-shielding layer. The light-shielding layer comprises a first light-shielding part arranged close to the cutting surface of the display panel.
2. The display panel of claim 1, wherein, The first light-shielding part comprises a second boundary close to the cutting surface, and the distance between the first boundary and the cutting surface is smaller than the distance between the second boundary and the cutting surface.
3. The display panel of claim 1, wherein, The cutting surface forms an angle with the substrate in a range of 100° to 120°.
4. The display panel of claim 1, wherein, The display panel comprises a plurality of organic layers, and at least one of the organic layers arranged close to a side of the cutting surface is provided with black material.
5. The display panel of claim 1, wherein, In the plurality of organic layers of the display panel, the mass of the black material on the organic layer close to a side of the substrate is greater than the mass of the black material on the organic layer away from a side of the substrate.
6. The display panel of claim 5, wherein, The distance between the second boundary and the cutting surface is greater than or equal to 0 and less than or equal to 150 microns. When the distance between the second boundary and the cutting surface is equal to 0, the second boundary and the cutting surface coincide.
7. The display panel of claim 5, wherein, The light-shielding layer further comprises a second light-shielding part away from the cutting surface, and the thickness of the second light-shielding part is greater than the thickness of the first light-shielding part.
8. The display panel of claim 7, wherein, When the second boundary is arranged away from the cutting surface, the first light-shielding part is provided with a first notch close to the cutting surface, and the first notch faces the cutting surface. The display panel further comprises a first planar layer arranged on the color film layer, and the first planar layer covers the color film layer.
9. A display module, characterized by The light-shielding layer further comprises a second light-shielding part away from the cutting surface, and the thickness of the first planar layer is less than or equal to the thickness of the second light-shielding part. The display module comprises the display panel and the cover layer.
10. A mobile terminal, characterized by The display panel is located in the cover layer. The mobile terminal comprises a terminal body and the display module. The terminal body and the display module are combined into one.
Citation Information
Patent Citations
Special-shaped display panel and display device
CN113031325A
Display device
US20190094610A1