Rapid heat dissipation liquid crystal display screen
By installing a graphite film and infrared radiation heat dissipation coating on the outer surface of the driving IC and FPC, a heat dissipation whole is formed, which solves the problem of FPC hardening, and ensures the heat dissipation ability and the good bending performance of FPC.
Patent Information
- Application Number
- CN202420847777.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-22
AI Technical Summary
While ensuring the heat dissipation ability, how to avoid the FPC becoming hard, so that the FPC is conducive to bending and avoid interference with other components of the entire machine.
By wrapping the graphite film on the outer surface of the driving IC and setting an infrared radiation heat dissipation coating on the outer surface of the FPC, the graphite film partially covers and contacts the infrared radiation heat dissipation coating, thereby forming a heat dissipation whole and achieving rapid heat dissipation.
While effectively ensuring the heat dissipation ability, it avoids the FPC hardening, making the FPC conducive to bending, and avoids interference with other components of the entire machine.
Smart Images
Figure CN222784697U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a fast heat dissipation liquid crystal display screen. Background Art
[0002] In the current display market, due to the relatively low cost of TFT modules, they are widely used in consumer products, such as smart bracelets, smart watches, smart homes, and electronic cigarette products. With the advancement of technology, more and more wearable devices such as watches and bracelets use more TFT modules. Since smart watches need to take outdoor use scenarios into consideration, the brightness of the module is very high, which needs to reach 700nits. This requires even higher backlight brightness, which needs to reach 14000nits. Since the backlight brightness is very high, the backlight will heat up seriously, especially the temperature at the backlight LED position is higher, which makes the driver IC position heat up seriously, causing the driver IC to be defective and the glass to heat up and turn white. The conventional practice is to use graphite film to wrap the driver IC and FPC to accelerate the heat dissipation of the driver IC and glass. However, the presence of graphite film causes the FPC to become hard, which is not conducive to the bending of the FPC. This will cause the FPC bending position to bulge, causing interference with other parts of the whole machine. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to prevent the FPC from becoming hard while ensuring the heat dissipation capacity, so as to facilitate the bending of the FPC and prevent the FPC bending position from protruding and interfering with other components of the whole machine.
[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0005] In order to solve the above technical problems, the utility model provides a fast heat dissipation liquid crystal display screen, which includes a lower polarizer, a lower substrate, an upper substrate and an upper polarizer stacked in sequence from bottom to top, the lower substrate is longer than the upper substrate and extends outward to form a step, the upper surface of the lower substrate located at the step is bound with a driver IC and an FPC, the outer surface of the driver IC is wrapped with a graphite film, the outer surface of the FPC is provided with an infrared radiation heat dissipation coating, and the graphite film partially covers and contacts the infrared radiation heat dissipation coating.
[0006] As a preferred implementation of the fast heat dissipation liquid crystal display screen provided by the utility model, two reinforcing plates staggered with each other are provided on both sides of the FPC.
[0007] As a preferred implementation of the fast heat dissipation liquid crystal display screen provided by the utility model, the widths of the two reinforcing plates are different.
[0008] As a preferred implementation of the fast heat dissipation liquid crystal display screen provided by the utility model, the material of the reinforcement plate is FR4, PI or stainless steel.
[0009] As a preferred implementation of the fast heat dissipation liquid crystal display screen provided by the utility model, the outer surfaces of the two reinforcement plates are both provided with a surface treatment layer for improving the surface roughness.
[0010] As a preferred implementation of the fast heat dissipation liquid crystal display screen provided by the utility model, the surface treatment layer is diamond knurling.
[0011] As a preferred implementation of the fast heat dissipation liquid crystal display screen provided by the utility model, the surface treatment layer is a frosted layer.
[0012] As a preferred embodiment of the fast heat dissipation liquid crystal display provided by the utility model, a two-dimensional code laser area is provided on the upper surface of the FPC, and a first ink layer and a second ink layer provided on the first ink layer are provided on the upper surface of the FPC located on the two-dimensional code laser area, and a two-dimensional code is formed on the second ink layer by laser, and the colors of the first ink layer and the second ink layer are different.
[0013] As a preferred implementation of the fast heat dissipation liquid crystal display screen provided by the utility model, the first ink layer is a black ink layer, and the second ink layer is a white ink layer.
[0014] As a preferred embodiment of the fast heat dissipation liquid crystal display provided by the utility model, the thickness of the first ink layer is 30 μm ～ 40 μm, the thickness of the second ink layer is 10 μm ～ 20μm.
[0015] The utility model has the following beneficial effects:
[0016] Since the outer surface of the driver IC is wrapped with a graphite film, the outer surface of the FPC is provided with an infrared radiation heat dissipation coating. The main components of this infrared radiation heat dissipation coating are usually graphene and carbon nanotubes, which are made with a resin carrier through a special grinding and dispersion process. It can quickly dissipate the heat of the heating element to the surroundings to achieve a cooling effect without increasing the surface hardness of the FPC. The graphite film partially covers and contacts the infrared radiation heat dissipation coating to form a heat dissipation whole, allowing the heat to dissipate quickly, thereby ensuring the heat dissipation capacity while avoiding the FPC from hardening, so that the FPC is easy to bend and the protrusion of the FPC bending position interferes with other parts of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 The utility model provides a structural schematic diagram of a rapid heat dissipation liquid crystal display screen.
[0019] Figure 2 for Figure 1 Top view of the lower and upper substrates.
[0020] Figure 3 This is a schematic diagram of the structure of Example 2.
[0021] Figure 4 This is a schematic diagram of the structure of Example 3.
[0022] Description of Figure Numbers:
[0023] Lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; driver IC 5; FPC 6; graphite film 51; infrared radiation heat dissipation coating 61;
[0024] Reinforcing plate 7; first ink layer 62; second ink layer 63. DETAILED DESCRIPTION
[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0027] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0028] The utility model provides a fast heat dissipation liquid crystal display screen, which comprises a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are sequentially stacked from bottom to top, wherein the lower substrate is longer than the upper substrate and extends outward to form a step, a driver IC and an FPC are bound to the upper surface of the lower substrate located at the step, the outer surface of the driver IC is wrapped with a graphite film, the outer surface of the FPC is provided with an infrared radiation heat dissipation coating, and the graphite film partially covers and contacts the infrared radiation heat dissipation coating.
[0029] Since the outer surface of the driver IC is wrapped with a graphite film, the outer surface of the FPC is provided with an infrared radiation heat dissipation coating. The main components of this infrared radiation heat dissipation coating are usually graphene and carbon nanotubes, which are made with a resin carrier through a special grinding and dispersion process. It can quickly dissipate the heat of the heating element to the surroundings to achieve a cooling effect without increasing the surface hardness of the FPC. The graphite film partially covers and contacts the infrared radiation heat dissipation coating to form a heat dissipation whole, allowing the heat to dissipate quickly, thereby ensuring the heat dissipation capacity while avoiding the FPC from hardening, so that the FPC is easy to bend and the protrusion of the FPC bending position interferes with other parts of the whole machine.
[0030] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.
[0031] Example 1
[0032] See also Figure 1 and Figure 2, is a fast heat dissipation liquid crystal display provided by the utility model, which includes a lower polarizer 1, a lower substrate 2, an upper substrate 3 and an upper polarizer 4 which are stacked in sequence from bottom to top, the lower substrate 2 is longer than the upper substrate 3 and extends outward to form a step, the upper surface of the lower substrate 2 located at the step is bound with a driver IC 5 and an FPC 6, the outer surface of the driver IC 5 is wrapped with a graphite film 51, the outer surface of the FPC 6 is provided with an infrared radiation heat dissipation coating 61, and the graphite film 51 partially covers and contacts the infrared radiation heat dissipation coating 61. Since the outer surface of the driver IC5 is wrapped with a graphite film 51, the outer surface of the FPC6 is provided with an infrared radiation heat dissipation coating 61. The main components of this infrared radiation heat dissipation coating 61 are usually graphene and carbon nanotubes, which are made with a resin carrier through a special grinding and dispersion process. It can quickly dissipate the heat of the heating element to the surroundings to achieve a cooling effect without increasing the surface hardness of the FPC6. The graphite film 51 partially covers and contacts the infrared radiation heat dissipation coating 61, thereby forming a heat dissipation whole, allowing the heat to dissipate quickly, thereby ensuring the heat dissipation capacity while avoiding the hardening of the FPC6, so that the FPC6 is easy to bend and the protruding bending position of the FPC6 avoids interference with other parts of the whole machine.
[0033] Example 2
[0034] See also Figure 3 As a further optimization scheme of Example 1, in this embodiment, two reinforcing plates 7 are provided on both sides of FPC6 and are staggered with each other. In the traditional FPC6 design, reinforcing plates 7 are usually not provided or are provided at the same position and have the same width, resulting in the pressure applied being concentrated on the same straight line when plugging and unplugging FPC6, causing a slight break in the FPC6 line. The FPC6 provided by the utility model has two reinforcing plates 7 located on both sides of the connecting portion and staggered with each other. When the FPC6 is pulled out, the pressure exerted by the reinforcing plates 7 on the two sides on the FPC6 is not on the same line segment, and the stress will not be concentrated on the same straight line when bending, thereby avoiding stress concentration and the problem of easy slight break in the line at the interface end, thereby improving the product yield.
[0035] Furthermore, the two mutually staggered reinforcing plates 7 referred to in the utility model can be respectively arranged at two different positions; or the center point position can be the same, but the widths of the two reinforcing plates 7 are different. It is sufficient to make the stress of the two reinforcing plates 7 not be concentrated on the same straight line when they are bent, which can avoid stress concentration and the problem of easy micro-breakage of the line at the interface end, thereby improving the product yield. In this embodiment, the reinforcing plates 7 include a first reinforcing plate and a second reinforcing plate, and the widths of each reinforcing plate 7 are different, and their center points are on the same horizontal line, so that the edges of the reinforcing plates 7 are staggered and not concentrated on the same straight line.
[0036] Furthermore, the material of the reinforcing plate 7 is FR4, PI or stainless steel. In other embodiments, if the heat generated by the FPC 6 is relatively large, a heat dissipation material with a better heat dissipation effect, such as an aluminum foil reinforcing plate 7, may also be used.
[0037] Furthermore, the outer surfaces of the first reinforcement plate and the second reinforcement plate are both provided with a surface treatment layer for increasing the surface roughness, so as to increase the friction between the worker and the first reinforcement plate and the second reinforcement plate, so that the FPC6 is easy to pull out.
[0038] Furthermore, the surface treatment layer is provided with diamond knurling on the outer surfaces of the first reinforcement plate and the second reinforcement plate, so that the FPC6 can be pulled out more easily, reducing the risk of the FPC6 circuit being broken.
[0039] Furthermore, the surface treatment layer is a frosted layer.
[0040] Example 3
[0041] See also Figure 4 As a further optimization scheme of Example 1, in this embodiment, a two-dimensional code laser area is further provided on the upper surface of FPC6. A first ink layer 62 and a second ink layer 63 provided on the first ink layer 62 are provided on the upper surface of FPC6 located on the two-dimensional code laser area. The second ink layer 63 is formed with a two-dimensional code by laser. The colors of the first ink layer 62 and the second ink layer 63 are different. Since two layers of ink, the first ink layer 62 and the second ink layer 63, are provided, the second ink layer 63 on the surface is lasered off by laser to expose the first ink layer 62 on the bottom layer. The areas where the laser is lasered are displayed in different colors. The two-dimensional code generated in this way has a good contrast effect and is easy to scan. At the same time, the two-dimensional code will not fall off or be damaged, which prevents the two-dimensional code from being invalid, and greatly reduces the labor cost.
[0042] Furthermore, the first ink layer 62 is a black ink layer, and the second ink layer 63 is a white ink layer. The contrast between the black ink layer and the white ink layer is better, and the code is easier to scan.
[0043] Furthermore, the thickness of the first ink layer 62 is 30 μm. ～ 40 μm. The thickness of the second ink layer 63 is 10 μm ～ 20μm. This thickness is the thickness that the commonly used ultraviolet laser can just penetrate, and there is no dust around after the laser irradiation, which has the advantages of high rhythm and efficiency. The reason why the thickness of the lower first ink layer 62 is thicker than the thickness of the upper second ink layer 63 is to avoid laser power energy fluctuations and prevent the first ink layer 62 from being penetrated by the laser and causing damage to the internal layer of FPC6.
[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0045] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. A fast heat dissipation liquid crystal display screen, characterized in that: It includes a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are stacked in sequence from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. A driver IC and an FPC are bound to the upper surface of the lower substrate at the step. The outer surface of the driver IC is wrapped with a graphite film. The outer surface of the FPC is provided with an infrared radiation heat dissipation coating. The graphite film partially covers and contacts the infrared radiation heat dissipation coating.
2. The rapid heat dissipation liquid crystal display screen according to claim 1, characterized in that: Two reinforcing plates staggered with each other are arranged on both sides of the FPC.
3. The rapid heat dissipation liquid crystal display screen according to claim 2, characterized in that: The widths of the two reinforcing plates are different.
4. The rapid heat dissipation liquid crystal display screen according to claim 2, characterized in that: The reinforcement plate is made of FR4, PI or stainless steel.
5. The rapid heat dissipation liquid crystal display screen according to claim 2, characterized in that: The outer surfaces of the two reinforcing plates are both provided with a surface treatment layer for improving the surface roughness.
6. The rapid heat dissipation liquid crystal display screen according to claim 5, characterized in that: The surface treatment layer is diamond knurled.
7. The rapid heat dissipation liquid crystal display screen according to claim 5, characterized in that: The surface treatment layer is a frosted layer.
8. The rapid heat dissipation liquid crystal display screen according to claim 1, characterized in that: A QR code laser area is provided on the upper surface of the FPC, a first ink layer and a second ink layer provided on the first ink layer are provided on the upper surface of the FPC located on the QR code laser area, a QR code is formed on the second ink layer by laser, and the colors of the first ink layer and the second ink layer are different.
9. The rapid heat dissipation liquid crystal display screen according to claim 8, characterized in that: The first ink layer is a black ink layer, and the second ink layer is a white ink layer.
10. The rapid heat dissipation liquid crystal display screen according to claim 8, characterized in that: The thickness of the first ink layer is 30 μm ～ 40 μm, the thickness of the second ink layer is 10 μm ～ 20μm.