Display screen and spliced display module
By setting the light absorbing layer in the flexible connector and covering the binding area of the substrate, the problem of the micro LED display splicing seam position being displayed as yellow stripes is solved, and the black splicing seam and high contrast display effect is achieved.
Patent Information
- Application Number
- CN202311118909.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-31
- Publication Date
- 2025-03-04
AI Technical Summary
When splicing, the splicing seams are displayed in yellow stripes due to the reflection of the crystal-covered film, which affects the appearance and display contrast.
A light absorbing layer is provided in the flexible connector, and the orthoprojection of the light absorbing layer is covered in the binding area of the substrate to absorb most of the visible light, so that the splicing seam position is displayed black.
It improves the appearance aesthetics of the spliced display module when it is not powered on, and improves the contrast of the display screen when powered on, thereby improving the display effect.
Smart Images
Figure CN119559866A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of display, and in particular to a display screen and a spliced display module. Background Art
[0002] With the development of display technology, high brightness, high resolution, high color saturation and high color gamut display screens have become the goal of constant pursuit. Micro-LED is a micro light-emitting diode, which has the same basic principle as OLED. Both are self-luminous technologies and can display colors independently. The biggest advantage of Micro-LED display screens comes from: the micron-level pixel pitch and each pixel can be controlled and driven individually, making Micro LED display screens have higher brightness, better luminous efficiency and lower power consumption than existing OLED display screens.
[0003] When a large display device needs to be made, it is usually necessary to splice multiple small Micro LED display screens. In the prior art, the edge of the Micro LED display screen is usually provided with a chip-on-chip film, one end of which is connected to the binding area of the substrate, and the other end is connected to the PCB board on the back of the substrate, so that the circuit set in the substrate for controlling the lighting or shutting down of the Micro LED can be connected to the PCB board; since the base material of the chip-on-chip film is usually yellow PI (polyimide), when ambient light irradiates the chip-on-chip film, the yellow PI will reflect the incident ambient light and reflect yellow light, so that the binding area of the Micro LED display screen appears as yellow stripes, and then a yellow stripe gap is formed between the two spliced Micro LED display screens. When the spliced display module is not powered on, the display area appears black and the splicing seam area appears yellow, resulting in poor appearance of the spliced display module. When the spliced display module is powered on, it will affect the contrast of the display screen of the spliced display module, thereby affecting the display effect of the spliced display module. Summary of the invention
[0004] The embodiment of the present application provides a display screen and a spliced display module, which can make the splicing seam between two spliced display screens appear black, thereby improving the appearance of the spliced display module when it is not powered on, and improving the contrast of the display screen when the spliced display module is powered on, thereby improving the display effect of the spliced display module.
[0005] In a first aspect, an embodiment of the present application provides a display screen, including:
[0006] A substrate, the substrate having a light emitting surface and a non-light emitting surface arranged opposite to each other, the substrate comprising a display area and a binding area arranged at the periphery of the display area, and a first connecting member is provided on one side of the light emitting surface of the binding area of the substrate;
[0007] A light emitting device, provided on one side of the light emitting surface of the substrate and located in the display area, the light emitting device being electrically connected to the first connecting member;
[0008] A circuit board is arranged on the non-light-emitting side of the substrate;
[0009] A flexible connector, the flexible connector comprising a flexible light-transmitting substrate, a light-absorbing layer, a first circuit layer, and a second connector, which are sequentially stacked, one end of the first circuit layer is electrically connected to the second connector, and the second connector is electrically connected to the first connector on the substrate, so that the flexible connector is electrically connected to the binding area of the substrate; the other end of the first circuit layer is electrically connected to the circuit board, so that the flexible connector is electrically connected to the circuit board;
[0010] Wherein, the orthographic projection of the light absorbing layer on the substrate covers the binding area of the substrate.
[0011] In some embodiments, the light absorption layer has an absorption rate greater than or equal to 80% for light in the wavelength range of 400 nm to 700 nm.
[0012] In some embodiments, the material of the flexible light-transmitting substrate is transparent polyimide; and / or
[0013] The transmittance of the flexible light-transmitting substrate to light in the wavelength range of 400nm to 700nm is greater than or equal to 80%.
[0014] In some embodiments, the distance between the side surface of the light-emitting device facing away from the substrate and the light-emitting surface of the substrate is h1, and the distance between the side surface of the light-absorbing layer facing away from the substrate and the light-emitting surface of the substrate is h2, wherein h1≥h2.
[0015] In some embodiments, the orthographic projection of the light absorbing layer on the flexible light-transmitting substrate covers the entire surface of the flexible light-transmitting substrate.
[0016] In some embodiments, the material of the light absorbing layer includes at least one of a metal and a conductive metal oxide, and the thickness of the light absorbing layer is 0.04 μm to 2 μm;
[0017] The metal includes at least one of iron, manganese, chromium and molybdenum;
[0018] The conductive metal oxide includes molybdenum trioxide.
[0019] In some embodiments, the thickness of the flexible light-transmitting substrate is 5 μm to 30 μm, the thickness of the first circuit layer is 3 μm to 12 μm, and the thickness of the second connecting member is 1 μm to 3 μm.
[0020] In some embodiments, the flexible connector includes a first region, a second region, and a third region. The first region is located on the light-emitting side of the substrate and corresponds to a binding region of the substrate. The second region corresponds to a side of the substrate. The third region is located on the non-light-emitting side of the substrate. Both ends of the second region are respectively connected to the first region and the third region.
[0021] In some embodiments, the display screen further comprises an anti-glare cover plate, and the anti-glare cover plate is arranged on a side of the light emitting device away from the substrate;
[0022] The anti-glare cover plate includes a first main body portion and a first protruding portion connected to each other, the first main body portion covers the substrate and a first area of the flexible connector, and the first main body portion and the first protruding portion are arranged in sequence from the display area to the binding area.
[0023] In some embodiments, a distance between a side of the first protrusion facing away from the first main body and an outer surface of the second region of the flexible connector is 2 μm to 8 μm.
[0024] In some embodiments, the display screen further includes an encapsulation layer, the encapsulation layer includes a second main body portion and a second protruding portion connected to each other, the second main body portion and the second protruding portion are arranged in sequence from the display area to the binding area;
[0025] The second main body covers the light emitting device on the substrate and the surface of the first region of the flexible connector, and the second protruding portion covers at least a portion of the outer surface of the second region of the flexible connector.
[0026] In a second aspect, an embodiment of the present application provides a spliced display module, comprising at least two display screens connected together, wherein the display screens are the display screens described above.
[0027] The display screen provided in the embodiment of the present application is provided with a light absorbing layer in the flexible connector, and the orthographic projection of the light absorbing layer on the substrate is provided to cover the binding area of the substrate. Since the light absorbing layer can absorb most of the visible light, the appearance of the light absorbing layer appears black. Therefore, when ambient light is irradiated to the flexible connector, the incident ambient light will pass through the flexible light-transmitting substrate and be absorbed by the light absorbing layer, so that the binding area of the substrate appears black, and then the splicing seam position between the two spliced display screens appears black. When the spliced display module is not powered on, the display area and the splicing seam area of the spliced display module both appear black, and the appearance effect is consistent, thereby improving the appearance of the spliced display module. When the spliced display module is powered on, the splicing seam area appears black and the display area appears in color, thereby improving the contrast of the display screen of the spliced display module, and then improving the display effect of the spliced display module. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.
[0029] Figure 1 A schematic diagram of the structure of a display screen provided in an embodiment of the present application.
[0030] Figure 2 This is a schematic diagram of the structure of the flexible connector after it is unfolded according to an embodiment of the present application.
[0031] Figure 3 A schematic diagram of the structure of a spliced display module provided in an embodiment of the present application. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.
[0033] See also Figure 1 An embodiment of the present application provides a display screen 110 , including a substrate 10 , a light emitting device 60 , a circuit board 70 and a flexible connector 80 .
[0034] See also Figure 1 The substrate 10 has a light emitting surface S11 and a non-light emitting surface S12 which are arranged opposite to each other. The substrate 10 includes a display area 13 and a binding area 14 arranged at the periphery of the display area 13. A first connecting member 53 is provided on one side of the light emitting surface S11 of the binding area 14 of the substrate 10.
[0035] See also Figure 1 The light emitting device 60 is disposed on one side of the light emitting surface S11 of the substrate 10 and is located in the display area 13 . The light emitting device 60 is electrically connected to the first connecting member 53 .
[0036] See also Figure 1 The circuit board 70 is disposed on the non-light emitting surface S12 side of the substrate 10 .
[0037] See also Figure 1 and Figure 2 The flexible connector 80 includes a flexible light-transmitting substrate 81, a light-absorbing layer 82, a first circuit layer 83, and a second connector 84 which are stacked in sequence. One end of the first circuit layer 83 is electrically connected to the second connector 84. The second connector 84 is electrically connected to the first connector 53 on the substrate 10, so that the flexible connector 80 is electrically connected to the binding area 14 of the substrate 10; the other end of the first circuit layer 83 is electrically connected to the circuit board 70, so that the flexible connector 80 is electrically connected to the circuit board 70.
[0038] See also Figure 1 , the orthographic projection of the light absorbing layer 82 on the substrate 10 covers the binding area 14 of the substrate 10 .
[0039] Exemplarily, the absorption rate of the light absorbing layer 82 to the light in the wavelength band of 400nm to 700nm is greater than or equal to 80%, for example, 80%, 82%, 85%, 87%, 90%, 93%, 95%, 97%, 99%, 100%, etc. It can be understood that the light in the wavelength band of 400nm to 700nm is the visible light wavelength band. When the absorption rate of the light absorbing layer 82 to the light in the wavelength band of 400nm to 700nm is greater than or equal to 80%, it means that the absorption rate of the light absorbing layer 82 to the visible light is large, that is, the light absorbing layer 82 can absorb most of the visible light, so that the appearance of the light absorbing layer 82 appears black.
[0040] Exemplarily, the light emitting device 60 may be a Micro LED (micro light emitting diode) or a Mini LED (sub-millimeter light emitting diode).
[0041] Illustratively, the substrate may be a glass substrate.
[0042] Exemplarily, the second connector 84 is connected to the first connector 53 on the substrate 10 by welding, that is, the first connector 53 and the second connector 84 are both made of metal materials (such as copper). Exemplarily, the welding method includes at least one of laser welding and heating welding.
[0043] In the prior art, the flexible connector 80 is connected to the substrate 10 through an anisotropic conductive adhesive (ACP). In order to improve the bonding effect, it is usually necessary to apply pressure to the flexible connector 80 during the connection process. Since the substrate 10 is usually a glass substrate, which is fragile, the edge of the substrate 10 is easily broken, thereby reducing the product yield and increasing the production cost.
[0044] The present application connects the flexible connector 80 and the substrate 10 by welding (such as laser welding or heating welding), which can avoid applying pressure to the flexible connector 80 during the connection process, thereby avoiding the edge of the substrate 10 from being broken, thereby improving product yield and reducing production costs.
[0045] Please combine Figure 1 and Figure 2 The flexible connector 80 may further include a third connector 93, which is connected to an end of the first circuit layer 83 that is away from the second connector 84. The third connector 93 is connected to the circuit board 70 by welding, so that the flexible connector 80 is electrically connected to the circuit board 70. It can be understood that at this time, the third connector 93 is a metal material (such as copper).
[0046] In some embodiments, the other end of the first circuit layer 83 and the circuit board 70 may be connected via anisotropic conductive adhesive.
[0047] Exemplarily, the circuit board 70 may be a printed circuit board (PCB).
[0048] Exemplarily, the flexible connector 80 may further include an IC chip 86 (Integrated Circuit Chip), and the IC chip 86 is electrically connected to the first circuit layer 83 .
[0049] Please combine Figure 1 and Figure 2 The flexible connector 80 further includes a second solder resist layer 95 , which covers an area on the first circuit layer 83 that is not blocked by the third connector 93 and the IC chip 86 .
[0050] The display screen 110 provided in the embodiment of the present application is provided with a light absorbing layer 82 in the flexible connector 80, and the orthographic projection of the light absorbing layer 82 on the substrate 10 covers the binding area 14 of the substrate 10. Since the absorption rate of the light absorbing layer 82 to the light in the wavelength band of 400nm to 700nm is greater than or equal to 80%, that is, the light absorbing layer 82 can absorb most of the visible light, so that the appearance of the light absorbing layer 82 appears black. Therefore, when ambient light irradiates the flexible connector 80, the incident ambient light will pass through the flexible light-transmitting substrate 81 and be absorbed by the light absorbing layer 82, so that the binding area 14 of the substrate 10 is Area 14 appears black, so that the splicing seam position between the two spliced display screens 110 appears black. When the spliced display module 100 is not powered on, the display area 13 and the splicing seam area of the spliced display module 100 both appear black, and the appearance effect is consistent, thereby improving the appearance of the spliced display module 100. When the spliced display module 100 is powered on, the splicing seam area appears black and the display area 13 appears in color, thereby improving the contrast of the display screen of the spliced display module 100, thereby improving the display effect of the spliced display module 100.
[0051] Exemplarily, the material of the flexible light-transmitting substrate 81 is transparent polyimide (Colorless Polyimide, CPI).
[0052] In the prior art, the material of the flexible light-transmitting substrate 81 is yellow PI. A portion of the light emitted from the edge of the display screen will be emitted at an inclined angle. When the light emitted at the inclined angle (light with a large viewing angle) passes through the yellow PI, the yellow PI has a low light transmittance and absorbs part of the color light (mainly blue light), which will cause color cast in the edge area of the display screen, resulting in poor display effect of the spliced display module.
[0053] The present application sets the material of the flexible light-transmitting substrate 81 to transparent polyimide, that is, makes the flexible light-transmitting substrate 81 appear colorless and transparent. At this time, when the light emitted from the edge of the display screen is emitted at an inclined angle, most of these light rays can pass through the flexible light-transmitting substrate 81, so that this part of the light emitted at the inclined angle (wide-viewing angle light) can enter the user's eyes, thereby improving the display effect of the display screen at a wide viewing angle and improving the color cast problem.
[0054] Exemplarily, the transmittance of the flexible light-transmitting substrate 81 (transparent polyimide) to light in the 400nm to 700nm band is greater than or equal to 80%, for example 80%, 82%, 85%, 87%, 90%, 93%, 95%, 97%, 99%, 100%, etc.
[0055] Please combine Figure 1The distance between the surface of the light emitting device 60 facing away from the substrate 10 and the light emitting surface S11 of the substrate 10 is h1, and the distance between the surface of the light absorbing layer 82 facing away from the substrate 10 and the light emitting surface S11 of the substrate 10 is h2, wherein h1≥h2.
[0056] It should be noted that, in the present application, a distance h1 between a surface of the side of the light-emitting device 60 facing away from the substrate 10 and the light-emitting surface S11 of the substrate 10 is set to be greater than or equal to a distance h2 between a surface of the side of the light-emitting device 60 facing away from the substrate 10 and the light-emitting surface S11 of the substrate 10. In other words, the height of the top surface of the light-emitting device 60 is greater than or equal to the height of the light-absorbing layer 82. This can avoid or reduce the problem of light emitted by the light-emitting device 60 in the edge area of the display screen 110 being absorbed or blocked by the light-absorbing layer 82 at an inclined angle. In other words, when a user watches the display screen 110 or a spliced display module composed of multiple display screens 110 at a wide viewing angle, the light emitted by the light-emitting device 60 at the edge of the display screen 110 at an inclined angle can enter the user's eyes to the greatest extent, thereby improving the display effect of the display screen at a wide viewing angle and improving the color cast problem.
[0057] Please combine Figure 1 A common circuit layer 21, a TFT device layer 22 and a first solder resist layer 23 are stacked on the substrate 10. The common circuit layer 21 is arranged on the light emitting surface S11 side of the substrate 10, the TFT device layer 22 is arranged on the side of the common circuit layer 21 away from the substrate 10, the first solder resist layer 23 is arranged on the side of the TFT device layer 22 away from the common circuit layer 21, the light emitting device 60 is arranged on the side of the first solder resist layer 23 away from the first solder resist layer 23, the light emitting device 60 is connected to the TFT device layer 22, and the TFT device layer 22 and the first connecting member 53 are both connected to the common circuit layer 21.
[0058] Please combine Figure 1 It can be seen that the first connecting member 53 is a part of the common circuit layer 21 .
[0059] It should be noted that the TFT device layer 22 is used to control the lighting, shutting down and brightness of the light-emitting device 60, and the TFT device layer 22 is connected to the common circuit layer 21, so that an electrical signal can be input into the TFT device layer 22 through the common circuit layer 21; since the first connector 53 of the flexible connector 80 is connected to the common circuit layer 21, and the other end of the flexible connector 80 is connected to the circuit board 70, that is to say, the flexible connector 80 plays a connecting role between the circuit board 70 and the common circuit layer 21, so that the circuit board 70 can control the common circuit layer 21, and then can control the lighting, shutting down and brightness of the light-emitting device 60.
[0060] Please combine Figure 1 The substrate 10 further includes a first solder pad 41 and a second solder pad 42, one of the first solder pad 41 and the second solder pad 42 is connected to the positive electrode of the light emitting device 60, and the other of the first solder pad 41 and the second solder pad 42 is connected to the negative electrode of the light emitting device 60;
[0061] The first pad 41 penetrates the first solder resist layer 23 , one end of the first pad 41 is connected to the light emitting device 60 , and the other end of the first pad 41 is connected to the TFT device layer 22 ;
[0062] The second solder pad 42 penetrates the first solder resist layer 23 , one end of the second solder pad 42 is connected to the light emitting device 60 , and the other end of the second solder pad 42 can be connected to a related circuit in the common circuit layer 21 .
[0063] Please combine Figure 1 A black matrix 51 is also provided on the substrate 10. The black matrix 51 is provided on the first solder resist layer 23 and is located between adjacent light emitting devices 60. By providing the black matrix 51 on the substrate 10, the contrast of the display screen 110 can be improved, thereby improving the display effect.
[0064] Please combine Figure 1 and Figure 2 In some embodiments, the orthographic projection of the light absorbing layer 82 on the flexible light-transmitting substrate 81 covers the entire surface of the flexible light-transmitting substrate 81. At this time, the light absorbing layer 82 can cover the side of the display screen 110, so that the splicing seam area between two adjacent display screens 110 in the spliced display module is displayed as black as possible, thereby improving the contrast of the display screen of the spliced display module.
[0065] Exemplarily, the material of the light absorbing layer 82 includes at least one of a metal and a conductive metal oxide.
[0066] It can be understood that since both metals and conductive metal oxides have conductive properties, that is, when the material of the light absorbing layer 82 includes metals and / or conductive metal oxides, the light absorbing layer 82 also has conductive properties. Since the light absorbing layer 82 is stacked and connected to the common circuit layer 21, it is equivalent to increasing the thickness of the common circuit layer 21, thereby reducing the internal resistance of the common circuit layer 21, thereby improving the conductive performance of the common circuit layer 21.
[0067] Illustratively, the metal includes at least one of iron, manganese, chromium and molybdenum.
[0068] Exemplarily, the conductive metal oxide includes molybdenum trioxide (MoO).
[0069] In some other embodiments, the material of the light absorbing layer 82 may also be a black resin material.
[0070] Exemplarily, the thickness of the light absorption layer 82 is 0.04 μm to 2 μm, such as 0.04 μm, 0.1 μm, 0.3 μm, 0.5 μm, 0.8 μm, 1 μm, 1.2 μm, 1.5 μm, 1.8 μm, 2 μm, etc.
[0071] It can be understood that the binding area 14 of the substrate 10 is a non-display area. By using the light absorbing layer 82 to cover the binding area 14 of the substrate 10, that is, the light absorbing layer 82 plays the role of a black matrix, the contrast of the display screen 110 can be improved, thereby improving the display quality.
[0072] Exemplarily, the thickness of the flexible light-transmitting substrate 81 is 5 μm to 30 μm, such as 5 μm, 8 μm, 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, 22 μm, 25 μm, 28 μm, 30 μm, etc. Since the thickness of the flexible light-transmitting substrate 81 is thin, it is easier to bend, and when the flexible connector 80 is bent, a smaller bending radius can be formed, and the risk of disconnection of the metal circuit on the flexible connector 80 can be reduced.
[0073] Exemplarily, the thickness of the first circuit layer 83 is 3 μm to 10 μm, for example, 3 μm, 5 μm, 8 μm, 10 μm, etc.
[0074] Exemplarily, the thickness of the second connecting member 84 is 1 μm to 3 μm, such as 1 μm, 2 μm, 3 μm, etc.
[0075] Exemplarily, the light emitting device 60 has a thickness of 3 μm to 14 μm, for example, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, etc.
[0076] Exemplarily, the sum of the thicknesses of the film layer components (the first pad 41, the second pad 42, the TFT device layer 22, and the first solder resist layer 23) under the light-emitting device 60 is 1 μm to 8 μm (for example, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, etc.), that is, the distance from the top surface of the pad to the top surface of the common circuit layer 21 is 1 μm to 8 μm.
[0077] Please combine Figure 1 , it is known that h1 (the distance between the surface of the side of the light emitting device 60 facing away from the substrate 10 and the light emitting surface S11 of the substrate 10) is the sum of the thickness of the light emitting device 60, the film layer components below the light emitting device 60 (the first pad 41, the second pad 42, the TFT device layer 22 and the first solder resist layer 23) and the common circuit layer 21. It can be seen that the thickness of the other film layers except the common circuit layer 21 in h1 ranges from 4μm to 22μm;
[0078] Please combine Figure 2 It is known that h2 (the distance between the surface of the light absorbing layer 82 facing away from the substrate 10 and the light emitting surface S11 of the substrate 10) is the sum of the thicknesses of the light absorbing layer 82, the first circuit layer 83, the second connecting member 84 and the common circuit layer 21. It can be seen that the thickness of the other film layers except the common circuit layer 21 in h2 ranges from 3.04 μm to 15 μm.
[0079] By comparison, it can be seen that a value greater than or equal to h2 can be selected from the numerical range of h1, so that the top surface of the light-emitting device 60 is higher than or flush with the top surface of the light-absorbing layer 82. Therefore, the problem of light emitted by the light-emitting device 60 in the edge area of the display screen 110 being absorbed or blocked by the light-absorbing layer 82 at an inclined angle can be avoided or alleviated, thereby allowing the light emitted by the light-emitting device 60 in the edge area of the display screen 110 at an inclined angle to enter the user's eyes to the greatest extent, thereby improving the display effect of the display screen at a wide viewing angle and improving the color cast problem.
[0080] Please combine Figure 1 The flexible connector 80 includes a first area 31, a second area 32 and a third area 33. The first area 31 is located on the light-emitting side of the substrate 10 and is arranged corresponding to the binding area 14 of the substrate 10. The second area 32 is arranged corresponding to the side of the substrate 10. The third area 33 is located on the non-light-emitting side of the substrate 10. Both ends of the second area 32 are respectively connected to the first area 31 and the third area 33.
[0081] Please combine Figure 1 The display screen 110 further includes an anti-glare cover plate 92 , which is disposed on a side of the light emitting device 60 facing away from the substrate 10 .
[0082] It can be understood that the anti-glare cover plate 92 can perform a packaging function for the substrate 10 and the light-emitting device 60 on the substrate 10, thereby preventing water and oxygen in the external environment from corroding the light-emitting device 60 and the circuits on the substrate 10. In addition, since the anti-glare cover plate 92 also has an anti-glare function, that is, when ambient light is incident on the anti-glare cover plate 92, diffuse reflection will occur, thereby reducing the brightness of the reflected light, thereby reducing the brightness of the reflected light in the binding area 14 of the substrate 10, and thus weakening the visual effect of the splicing seam position of the splicing display module 100, thereby improving the quality of the display image of the splicing display module 100.
[0083] Exemplarily, the anti-glare cover plate 92 may be anti-glare glass.
[0084] Please combine Figure 1The anti-glare cover plate 92 includes a first main body portion 921 and a first protruding portion 922 connected to each other, the first main body portion 921 covers the substrate 10 and the first area 31 of the flexible connector 80, and the first main body portion 921 and the first protruding portion 922 are arranged in sequence from the display area 13 to the binding area 14.
[0085] Exemplarily, a distance L between a side of the first protrusion 922 facing away from the first main body 921 and an outer surface of the second region 32 of the flexible connector 80 is 2 μm to 8 μm, for example, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, etc.
[0086] It should be noted that, in the present application, a first protrusion 922 is provided on the anti-glare cover plate 92, that is, the edge of the anti-glare cover plate 92 protrudes a certain distance from the flexible connector 80, which is equivalent to forming a protection zone at the edge of the anti-glare cover plate 92. The protection zone can protect the flexible connector 80 below, thereby preventing the flexible connector 80 from being squeezed and causing the internal circuit to be broken when the display screen 110 is transported, or when multiple display screens 110 are spliced, the adjacent display screens 110 squeeze the flexible connector 80 and cause the internal circuit of the flexible connector 80 to be broken. Therefore, the service life of the flexible connector 80 can be extended, thereby extending the service life of the spliced display module 100.
[0087] Please combine Figure 1 The display screen 110 may further include an encapsulation layer 52, which is disposed on a side of the anti-glare cover plate 92 close to the light emitting device 60, and the encapsulation layer 52 includes a second main body portion 521 and a second protruding portion 522 connected to each other, and the second main body portion 521 and the second protruding portion 522 are arranged in sequence from the display area 13 to the binding area 14;
[0088] The second main body 521 covers the light emitting device 60 on the substrate 10 and the surface of the first region 31 of the flexible connector 80 , and the second protrusion 522 covers at least a portion of the outer surface of the second region 32 of the flexible connector 80 .
[0089] It can be understood that the second main body 521 of the encapsulation layer 52 can protect the light-emitting device 60 and isolate the light-emitting device 60 from the influence of external water and oxygen. At the same time, since the encapsulation layer 52 also covers the connection point (i.e., welding position) between the flexible connector 80 and the substrate 10, the stability of the connection between the flexible connector 80 and the substrate 10 can be increased, and the situation that the external water and oxygen corrode the welding point position and cause a short circuit can be avoided;
[0090] The second protrusion 522 of the packaging layer 52 can protect the flexible connector 80. It can prevent the flexible connector 80 from being squeezed and causing internal circuit breakage when the display screen 110 is transported, or when multiple display screens 110 are spliced, the adjacent display screens 110 squeeze the flexible connector 80 and cause internal circuit breakage of the flexible connector 80. Therefore, the service life of the flexible connector 80 can be extended, and the service life of the spliced display module 100 can be extended.
[0091] Exemplarily, the material of the encapsulation layer 52 may be a light-transmitting resin material, and the transmittance of the encapsulation layer 52 is greater than or equal to 80%, for example, 80%, 82%, 85%, 87%, 90%, 92%, 95%, 98%, 99%, 100%, etc.
[0092] See also Figure 3 The embodiment of the present application further provides a spliced display module 100, comprising at least two display screens 110 connected together, and the display screen 110 is the display screen 110 in any of the above embodiments.
[0093] The display screen and spliced display module provided by the embodiment of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.
Claims
1. A display screen, characterized in that: include: A substrate, the substrate having a light emitting surface and a non-light emitting surface arranged opposite to each other, the substrate comprising a display area and a binding area arranged at the periphery of the display area, and a first connecting member is provided on one side of the light emitting surface of the binding area of the substrate; A light emitting device, provided on one side of the light emitting surface of the substrate and located in the display area, the light emitting device being electrically connected to the first connecting member; A circuit board is arranged on the non-light-emitting side of the substrate; A flexible connector, the flexible connector comprising a flexible light-transmitting substrate, a light-absorbing layer, a first circuit layer, and a second connector, which are sequentially stacked, one end of the first circuit layer is electrically connected to the second connector, and the second connector is electrically connected to the first connector on the substrate, so that the flexible connector is electrically connected to the binding area of the substrate; the other end of the first circuit layer is electrically connected to the circuit board, so that the flexible connector is electrically connected to the circuit board; Wherein, the orthographic projection of the light absorbing layer on the substrate covers the binding area of the substrate.
2. The display screen according to claim 1, characterized in that: The absorption rate of the light absorbing layer to light in the wavelength range of 400nm to 700nm is greater than or equal to 80%.
3. The display screen according to claim 1, characterized in that: The material of the flexible light-transmitting substrate is transparent polyimide; The transmittance of the flexible light-transmitting substrate to light in the wavelength range of 400nm to 700nm is greater than or equal to 80%.
4. The display screen according to claim 1, characterized in that: The distance between the surface of the light emitting device facing away from the substrate and the light emitting surface of the substrate is h1, and the distance between the surface of the light absorbing layer facing away from the substrate and the light emitting surface of the substrate is h2, wherein h1≥h2.
5. The display screen according to claim 1, characterized in that: The orthographic projection of the light absorbing layer on the flexible light-transmitting substrate covers the entire surface of the flexible light-transmitting substrate.
6. The display screen according to claim 1, characterized in that: The material of the light absorbing layer includes at least one of a metal and a conductive metal oxide, and the thickness of the light absorbing layer is 0.04 μm to 2 μm; The metal includes at least one of iron, manganese, chromium and molybdenum; The conductive metal oxide includes molybdenum trioxide.
7. The display screen according to claim 1, characterized in that: The thickness of the flexible light-transmitting substrate is 5 μm to 30 μm, the thickness of the first circuit layer is 3 μm to 12 μm, and the thickness of the second connecting member is 1 μm to 3 μm.
8. The display screen according to claim 1, characterized in that: The flexible connector includes a first area, a second area and a third area. The first area is located on the light-emitting side of the substrate and corresponds to the binding area of the substrate. The second area corresponds to the side of the substrate. The third area is located on the non-light-emitting side of the substrate. Both ends of the second area are respectively connected to the first area and the third area.
9. The display screen according to claim 8, characterized in that: The display screen further comprises an anti-glare cover plate, and the anti-glare cover plate is arranged on a side of the light emitting device away from the substrate; The anti-glare cover plate includes a first main body portion and a first protruding portion connected to each other, the first main body portion covers the substrate and a first area of the flexible connector, and the first main body portion and the first protruding portion are arranged in sequence from the display area to the binding area.
10. The display screen according to claim 9, characterized in that: A distance between a side of the first protrusion facing away from the first main body and an outer surface of the second region of the flexible connector is 2 μm to 8 μm.
11. The display screen according to claim 8, characterized in that: The display screen further comprises an encapsulation layer, the encapsulation layer comprises a second main body portion and a second protruding portion connected to each other, the second main body portion and the second protruding portion are arranged in sequence in a direction from the display area to the binding area; The second main body covers the light emitting device on the substrate and the surface of the first region of the flexible connector, and the second protruding portion covers at least a portion of the outer surface of the second region of the flexible connector.
12. A spliced display module, characterized in that: The invention comprises at least two display screens connected together, wherein the display screens are the display screens according to any one of claims 1 to 11.