Liquid crystal display screen capable of reducing thickness and production procedures
By designing a liquid crystal display with a viscous lower polarizer and an upper polarizer, it is directly bonded to the functional glass, and the problem of increasing the thickness and production process of the liquid crystal display screen in the prior art is solved, and the effect of reducing costs and improving competitiveness is achieved.
Patent Information
- Application Number
- CN202421532998.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-01
AI Technical Summary
When COG or COG is bonded with functional glass, the thickness of the intermediate glue and double-sided adhesive is needed, resulting in an increase in the total thickness, and increases the production process and cost, reducing the competitiveness of the product.
A liquid crystal display screen including a lower polarizer, a lower substrate, an upper substrate and an upper polarizer is designed. The upper and lower surfaces of the lower polarizer and the upper polarizer are both sticky and can be directly bonded to the functional glass to reduce the use of intermediate glue and double-sided stickiness.
By directly bonding to functional glass, the overall thickness of the module and production process are reduced, the product cost is reduced, and the product competitiveness is improved.
Smart Images
Figure CN222965536U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically, to a liquid crystal display screen with reduced thickness and production processes. Background Art
[0002] When two types of COG or COG and functional glass need to be bonded together, the common solution is to print glue around the COG glass or use double-sided tape. Such a design requires an increase in the thickness of the intermediate glue and double-sided tape, resulting in an increase in the total thickness. Moreover, it is also necessary to add production process auxiliary equipment and materials, leading to an increase in product cost and a reduction in product competitiveness. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is how to reduce the thickness and production processes of the liquid crystal display screen, reduce product cost, and improve product competitiveness.
[0004] The technical problem to be solved by the utility model is realized through the following technical solutions:
[0005] To solve the above technical problem, the utility model provides a liquid crystal display screen with reduced thickness and production processes, which includes a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer. The lower substrate is disposed on the upper surface of the lower polarizer; the upper substrate is disposed on the upper surface of the lower substrate. The lower substrate is longer than the upper substrate and extends outward to form a step. A driving IC and an FPC are bonded to the upper surface of the lower substrate at the step; the upper polarizer is disposed on the upper surface of the upper substrate; the upper surface and the lower surface of the lower polarizer and / or the upper surface and the lower surface of the upper polarizer are both sticky.
[0006] As a preferred embodiment of the liquid crystal display screen with reduced thickness and production processes provided by the utility model, a heating sheet is fixedly adhered to the lower surface of the lower polarizer.
[0007] As a preferred embodiment of the liquid crystal display screen with reduced thickness and production processes provided by the utility model, a cover plate is adhered to the upper surface of the upper polarizer.
[0008] As a preferred embodiment of the liquid crystal display screen with reduced thickness and production processes provided by the utility model, the FPC includes a non-bending area and bending areas disposed on both sides of the non-bending area. The bending areas are provided with PI reinforcing plates and a plurality of vias, and the PI reinforcing plates completely cover the plurality of vias.
[0009] As a preferred embodiment of the liquid crystal display screen with reduced thickness and production processes provided by the utility model, the plurality of vias are arranged in a line segment shape.
[0010] As a preferred embodiment of the liquid crystal display screen provided by the present utility model for reducing thickness and production processes, the FPC includes a lower protective film, a lower copper layer, a substrate layer, an upper copper layer, and an upper protective film which are sequentially arranged from bottom to top, and the PI reinforcing plate is disposed above the upper protective film.
[0011] As a preferred embodiment of the liquid crystal display screen provided by the present utility model for reducing thickness and production processes, the PI reinforcing plate is a PI cover film.
[0012] As a preferred embodiment of the liquid crystal display screen provided by the present utility model for reducing thickness and production processes, the thickness of the PI cover film is 0.1 mm.
[0013] As a preferred embodiment of the liquid crystal display screen provided by the present utility model for reducing thickness and production processes, the PI reinforcing plate does not extend beyond the non-bending area.
[0014] As a preferred embodiment of the liquid crystal display screen provided by the present utility model for reducing thickness and production processes, the shape of the via hole is a round hole.
[0015] The present utility model has the following beneficial effects:
[0016] Since both the upper surface and the lower surface of the lower polarizer and / or both the upper surface and the lower surface of the upper polarizer have adhesiveness, when it is necessary to bond the functional glass, it can be directly bonded thereto without bonding in the middle through substances such as glue and double-sided tape, reducing the overall thickness dimension of the module, saving production processes, improving efficiency, reducing product costs, and enhancing the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the solutions in the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1 It is a schematic structural diagram of a liquid crystal display screen provided by the present utility model for reducing thickness and production processes.
[0019] Figure 2 It is Figure 1 an improved structural diagram of
[0020] Figure 3 It is Figure 1 an improved structural diagram of the FPC in
[0021] Figure 4 It is Figure 3Schematic diagram of the position of the middle via on the FPC.
[0022] Explanation of the reference numerals in the attached drawings:
[0023] Lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; driving IC 5; FPC 6; heating sheet 7;
[0024] Non-bending area 601; bending area 602; PI reinforcing plate 61; via 62; lower protective film 63; lower copper layer 64; substrate layer 65; upper copper layer 66; upper protective film 67. Specific implementation manners
[0025] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0027] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0028] The utility model provides a liquid crystal display screen that reduces thickness and production processes, which includes a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer. The lower substrate is disposed on the upper surface of the lower polarizer; the upper substrate is disposed on the upper surface of the lower substrate. The lower substrate is longer than the upper substrate and extends outward to form a step. A driving IC and an FPC are disposed and bonded on the upper surface of the lower substrate at the step; the upper polarizer is disposed on the upper surface of the upper substrate; both the upper surface and the lower surface of the lower polarizer and / or both the upper surface and the lower surface of the upper polarizer have adhesiveness.
[0029] Since both the upper surface and the lower surface of the lower polarizer and / or both the upper surface and the lower surface of the upper polarizer have adhesiveness, when it is necessary to bond a functional glass, it can be directly bonded thereto without bonding in the middle through similar glue and double-sided tape, reducing the overall thickness dimension of the module, saving production processes, improving efficiency, reducing product costs, and enhancing the competitiveness of the product.
[0030] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The following describes the present utility model in detail with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.
[0031] Please refer to Figure 1 , which is a liquid crystal display screen that reduces thickness and production processes provided by the present utility model. It includes a lower polarizer 1, a lower substrate 2, an upper substrate 3, and an upper polarizer 4. The lower substrate 2 is disposed on the upper surface of the lower polarizer 1; the upper substrate 3 is disposed on the upper surface of the lower substrate 2. The lower substrate 2 is longer than the upper substrate 3 and extends outward to form a step. A driving IC 5 and an FPC 6 are disposed and bonded on the upper surface of the lower substrate 2 at the step; the upper polarizer 4 is disposed on the upper surface of the upper substrate 3; both the upper surface and the lower surface of the lower polarizer 1 and / or both the upper surface and the lower surface of the upper polarizer 4 have adhesiveness, that is, the upper and lower surfaces of the lower polarizer 1 have adhesiveness, or the upper and lower surfaces of the upper polarizer 4 have adhesiveness, or both the upper and lower surfaces of the upper and lower polarizers 1 have adhesiveness. Since both the upper surface and the lower surface of the lower polarizer 1 and / or both the upper surface and the lower surface of the upper polarizer 4 have self-adhesiveness, when it is necessary to bond a functional glass, it can be directly bonded thereto without bonding in the middle through similar glue and double-sided tape, reducing the overall thickness dimension of the module, saving production processes, improving efficiency, reducing product costs, and enhancing the competitiveness of the product.
[0032] Please refer to Figure 2, Further, a heating sheet 7 is fixedly pasted on the lower surface of the lower polarizer 1. The heating sheet 7 can be attached to the lower polarizer 1 without adding glue or double-sided tape, thereby providing a heating function for the liquid crystal display screen.
[0033] Further, a cover plate is pasted on the upper surface of the upper polarizer 4, eliminating the need for additional optical glue coating, thus reducing the production process.
[0034] Please refer to Figure 3 and Figure 4 , As a further optimized solution of Embodiment 1, in this embodiment, the FPC 6 includes a non-bending area 601 and bending areas 602 provided on both sides of the non-bending area 601. The bending areas 602 are provided with a PI reinforcement plate 61 and a plurality of vias 62. These vias 62 are bridges connecting the upper and lower copper layers, and their reliability is very important. The vias 62 cannot be under heavy pressure, are also afraid of being scratched, and are even more afraid of being folded. Therefore, in general, vias 62 are not allowed in the bending area 602 because the bending force will directly act on the vias 62, affecting the reliability of the vias 62. The PI reinforcement plate 61 completely covers the plurality of vias 62. A plurality of vias 62 are provided on the non-bending area 601. The vias 62 are relatively fragile and prone to stress concentration, resulting in fracture at the vias 62. Since the PI reinforcement plate 61 completely covers the vias 62, the stress is concentrated around the reinforcement plate rather than at the vias 62, preventing the risk of fracture at the vias 62 and avoiding the failure of the FPC 6.
[0035] Further, the plurality of vias 62 are arranged in a line segment shape. Since there is a reinforcement plate that completely covers the vias 62, even if the vias 62 are arranged in a line segment shape, it can ensure that the vias 62 are not easily fractured, improving the designability of the product and enhancing the product competitiveness.
[0036] Further, the FPC 6 includes a lower protective film 63, a lower copper layer 64, a substrate layer 65, an upper copper layer 66, and an upper protective film 67 arranged in sequence from bottom to top. The PI reinforcement plate 61 is provided above the upper protective film 67.
[0037] Further, the PI reinforcement plate 61 is a PI cover film, which has a lower cost and a simpler assembly process.
[0038] Further, the thickness of the PI cover film is 0.1 mm to ensure that the PI cover film has sufficient strength. The PI cover film is fixed by double-sided tape, and the thickness of the double-sided tape is 0.025 mm. The distance between the edge of the cover film and the via 62 is greater than 0.5 mm to ensure that the stress concentration area does not affect the via 62, preventing the risk of fracture at the via 62 and avoiding the failure of the FPC 6.
[0039] Furthermore, the PI reinforcing plate 61 does not extend beyond the non-bending area 601. That is, the PI reinforcing plate 61 is disposed within the non-bending area 601 to prevent stress concentration at the bending area 602 and avoid fracture in the bending area 602.
[0040] Furthermore, the shape of the via hole 62 is a round hole.
[0041] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "coupling", "fixation", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0042] Obviously, the embodiments described above are only a part of the embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are shown in the drawings, but 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 disclosed content of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present application in other related technical fields is equally within the scope of the patent protection of the present application.
Claims
1. A liquid crystal display screen with reduced thickness and production process, characterized in that: It includes: Lower polarizer; A lower substrate, which is arranged on the upper surface of the lower polarizer; An upper substrate, which is arranged on the upper surface of the lower substrate, the lower substrate is longer than the upper substrate and extends outward to form a step, and a driver IC and an FPC are arranged and bound on the upper surface of the lower substrate at the step; An upper polarizer, which is arranged on the upper surface of the upper substrate; The upper surface and the lower surface of the lower polarizer and / or the upper surface and the lower surface of the upper polarizer are both sticky; A heating plate is adhered and fixed to the lower surface of the lower polarizer, a cover plate is adhered to the upper surface of the upper polarizer, the FPC includes a non-bending area and bending areas arranged on both sides of the non-bending area, a PI reinforcing plate and a plurality of vias are arranged on the bending area, the PI reinforcing plate completely covers the plurality of vias, and the plurality of vias are arranged in a line segment shape, the FPC includes a lower protective film, a lower copper layer, a substrate layer, an upper copper layer and an upper protective film arranged in sequence from bottom to top, the PI reinforcing plate is arranged above the upper protective film, the PI reinforcing plate is a PI covering film, the thickness of the PI covering film is 0.1 mm, the PI reinforcing plate does not exceed the non-bending area, and the shape of the via is a circular hole.