Large combined touch display screen assembly

Abstract

The utility model relates to the technical field of touch display screen assemblies, in particular to a large combined touch display screen assembly. Comprising a touch module matrix, a first large OCA adhesive layer attached to the upper end face of the touch module matrix, a second large OCA adhesive layer attached to the lower end face of the touch module matrix, and a plurality of glass cover plates attached to the first large OCA adhesive layer and corresponding to the touch module matrix. The display module bodies are attached to the lower end face of the second large OCA adhesive layer and correspond to the touch module matrix; according to the large-piece combined type attaching mode, the multiple touch modules are positioned at a time, the positioning complexity is greatly reduced, each small component does not need to be independently positioned any more, only one-time accurate positioning needs to be conducted when the matrix combined structure with the multiple touch modules is formed, and the assembly efficiency is greatly improved. Therefore, the subsequent fitting requirement of the glass cover plate and the display module body can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of touch display screen assemblies, in particular to a large combined touch display screen assembly. Background Art

[0002] In today's era of rapid development of electronic products, with the continuous improvement of the degree of integration, small electronic products such as watches, bracelets and display modules on electrical appliances have an increasing demand for small-sized touch screen assemblies. Small-sized display screen modules usually involve multiple key bonding links, including the bonding of touch modules and glass cover plates, the bonding of display modules and electronic products, and the bonding of touch modules and display modules. In order to achieve better display effects and touch experience, these bondings basically adopt a full bonding method.

[0003] However, the current small-size full-bond optical transparent adhesive (OCA) uses a single-piece bonding process. Under this process, each touch module or display module needs to be bonded with OCA for full bonding separately. There are many problems in this process. First, the bonding effect is poor. Because it is a single-piece operation, it is difficult to ensure that each bonding can achieve a high degree of consistency and accuracy. There may be loose bonding, bubbles, position offset, etc., which will affect the overall performance and appearance of the display. Secondly, the risk of poor process is increased. Each separate bonding may introduce new problems, such as dust contamination, uneven bonding pressure, etc. These factors may lead to poor bonding, thereby reducing the yield rate of the product.

[0004] In a highly competitive market environment, low yield not only increases production costs, but also affects product delivery cycles and market competitiveness. Therefore, a new bonding technology is urgently needed to solve the problems existing in the full bonding process of small-size display modules, improve the bonding effect, reduce the risk of process defects, and thus improve the yield and overall quality of the product. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A large combined touch display screen assembly includes a touch module matrix, a first large OCA adhesive layer attached to the upper end surface of the touch module matrix, a second large OCA adhesive layer attached to the lower end surface of the touch module matrix, a plurality of glass cover plates attached to the first large OCA adhesive layer and corresponding to the touch module matrix, and a plurality of display module bodies attached to the lower end surface of the second large OCA adhesive layer and corresponding to the touch module matrix; wherein:

[0007] The upper end surface of the touch module matrix has a plurality of first FPC parts arranged in an array, and a plurality of first slits arranged in an array are formed on the first large OCA adhesive layer, and the plurality of first FPC parts correspond to the plurality of first slits;

[0008] The upper end surface of the display module body has a second FPC part, and a plurality of second slits arranged in an array are formed on the second large OCA adhesive layer, and the second FPC part corresponds to the second slit.

[0009] Preferably, a plurality of groups of silver paste trace laser etching patterns arranged in an array are provided on the touch module matrix, the first FPC part is formed on the silver paste trace laser etching pattern, and the plurality of display module bodies correspond to the plurality of groups of silver paste trace laser etching Figure 1 One-to-one correspondence.

[0010] Preferably, the display module body includes a reflective layer provided on a base layer, a light guide layer provided on the reflective layer, a diffusion layer provided on the light guide layer, a lower brightness enhancement layer provided on the diffusion layer, an upper brightness enhancement layer provided on the lower brightness enhancement layer, an adhesive layer provided on the upper brightness enhancement layer, a lower brightening layer provided on the adhesive layer, a liquid crystal display key layer provided on the lower brightening layer, and an upper brightening layer provided on the liquid crystal display key layer, wherein the liquid crystal display key layer is a color filter layer or a thin film transistor layer, and the second FPC part is provided on the liquid crystal display key layer.

[0011] Preferably, the total thickness of the touch module matrix is 1.9 mm - 2.2 mm, and the total thickness of the display module body is 1.4 mm - 1.7 mm.

[0012] Preferably, the total thickness of the touch module matrix is 2.05 mm, and the total thickness of the display module body is 1.56 mm.

[0013] Preferably, positioning structures are provided at the edges of the first large OCA adhesive layer and the second large OCA adhesive layer.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] This large-sheet combined bonding method positions a plurality of touch modules at one time, greatly reducing the complexity of positioning. There is no need to position each small component separately. Only one precise positioning is required when forming a matrix combination structure with a plurality of touch modules, which can meet the bonding requirements of the subsequent glass cover plate and the display module body.

[0016] As long as the large-sheet combined bonding method ensures accurate one-time positioning, it can guarantee the bonding accuracy of the glass cover plate, display module, and touch control module. Because after positioning multiple touch control modules at one time to form a matrix combination structure, based on this structure, the glass cover plate and the display module body are attached, reducing the errors that may occur during multiple positionings, thereby improving the bonding accuracy of the entire touch display screen assembly.

[0017] Due to reducing the complexity of positioning and improving the bonding accuracy, this large-sheet combined bonding method greatly improves the bonding efficiency of the small-size touch display screen assembly. In the traditional single bonding method, the positioning and bonding of each piece require a certain amount of time, while the large-sheet combined method can process multiple touch control modules at one time, reducing the time waste of single processing, thereby accelerating the speed of the entire bonding process.

[0018] The improvement of bonding accuracy directly leads to the improvement of the yield. In the traditional bonding method, due to inaccurate positioning and other reasons, bonding defects may occur, resulting in defective products. However, the large-sheet combined bonding method reduces the errors during the bonding process, significantly improving the yield of the final product.

[0019] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is the structural decomposition schematic diagram of the present utility model;

[0022] Figure 2 is the planar structural schematic diagram of the touch control module and the glass cover plate in the bonded state of the present utility model;

[0023] Figure 3 is the planar structural schematic diagram of the display module body of the present utility model;

[0024] Figure 4 is the structural schematic diagram of the first large-sheet OCA adhesive layer and the second large-sheet OCA adhesive layer of the present utility model;

[0025] Figure 5 is the structural schematic diagram of the touch control module matrix of the present utility model, in which a single touch control module is enlarged for illustration;

[0026] Figure 6 It is a structural decomposition schematic diagram of the display module body in the present utility model.

[0027] The reference numerals and names in the figure are as follows:

[0028] Touch control module matrix 10, first FPC part 11, silver paste trace laser etching pattern 12, positioning structure 13, first large OCA glue layer 20, first slot 21, second large OCA glue layer 30, second slot 31, glass cover plate 40, display module body 50, second FPC part 51, reflective layer 52, light guide layer 53, diffusion layer 54, lower brightness enhancement layer 55, upper brightness enhancement layer 56, bonding layer 57, lower brightening layer 58, upper brightening layer 59, liquid crystal display key layer 60. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. 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 creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figures 1-6 , in the embodiment of the present utility model, a large sheet combined touch display screen assembly includes a touch control module matrix 10, a first large OCA glue layer 20 attached to the upper end surface of the touch control module matrix 10, a second large OCA glue layer 30 attached to the lower end surface of the touch control module matrix 10, a plurality of glass cover plates 40 attached to the first large OCA glue layer 20 and corresponding to the touch control module matrix 10, and a plurality of groups of display module bodies 50 attached to the lower end surface of the second large OCA glue layer 30 and corresponding to the touch control module matrix 10; wherein,

[0031] The upper end surface of the touch control module matrix 10 has a plurality of first FPC parts 11 arranged in an array, and a plurality of first slots 21 arranged in an array are formed on the first large OCA glue layer 20, and the plurality of first FPC parts 11 correspond to the plurality of first slots 21; the upper end surface of the display module body 50 has a second FPC part 51, and a plurality of second slots 31 arranged in an array are formed on the second large OCA glue layer 30, and the second FPC part 51 corresponds to the second slots 31.

[0032] The small sizes of the traditional touch control module, display module, and glass cover plate 40 are changed from a single bonding method to a large-sheet combined bonding method. Taking the touch control module as the basis, a touch control module matrix 10 is set on the first large OCA adhesive layer 20, so that the touch control module matrix 10 forms a layout of a large-sheet array combination based on the first large OCA adhesive layer 20, and then the second large OCA adhesive layer 30 is bonded. Among them, the order of bonding the touch control module matrix 10 on the first large OCA adhesive layer 20 and on the second large OCA adhesive layer 30 can be flexibly adjusted according to actual production requirements. After the first OCA adhesive layer and the second OCA adhesive layer are bonded, a matrix combination structure with multiple touch control modules is formed. At this time, the glass cover plate 40 and the display module body 50 are respectively attached based on this structure. Through this method, multiple touch control modules can be positioned at one time, without the need for single-piece positioning and then bonding like the traditional bonding of the touch control module, display module, and glass cover plate 40. This greatly reduces the complexity of positioning, and as long as the one-time positioning is accurate, it can ensure the bonding accuracy of the glass cover plate 40, display module, and touch control module, thus greatly improving the bonding efficiency and yield of the small-size touch display screen assembly.

[0033] In the bonding of the touch control module and the OCA adhesive layer, the touch control module matrix 10 is the basic structural part of the entire large-sheet combined touch display screen assembly. On the upper end surface of the touch control module matrix 10, there are a plurality of first FPC parts 11 arranged in an array. FPC is a flexible printed circuit. The first large OCA adhesive layer 20 is bonded to the upper end surface of the touch control module matrix 10, and a plurality of first slots 21 corresponding to the array arrangement of the plurality of first FPC parts 11 are opened on this adhesive layer. This design enables the touch control module matrix 10 and the first large OCA adhesive layer 20 to be structurally adapted, and at the same time reserves space for subsequent assembly and circuit connection; the second large OCA adhesive layer 30 is bonded to the lower end surface of the touch control module matrix 10. The upper end surface of the display module body 50 has a second FPC part 51, and a plurality of second slots 31 corresponding to the array arrangement of the second FPC part 51 are opened on the second large OCA adhesive layer 30. This corresponding relationship ensures that when the display module body 50 is connected to the touch control module matrix 10 through the OCA adhesive layer, the circuit connection part can work properly.

[0034] The total thickness of the touch control module matrix 10 is 1.9 mm - 2.2 mm, preferably 2.05 mm for the total thickness of the touch control module matrix 10. The total thickness of the display module body 50 is 1.4 mm - 1.7 mm, preferably 1.56 mm for the total thickness of the display module body 50. Its thickness can be set between 3.3 mm - 3.9 mm.

[0035] Please refer to Figure 5, on the touch module matrix 10, there are multiple groups of silver paste trace laser etching patterns 12 arranged in an array. The first FPC part 11 is formed on the silver paste trace laser etching pattern 12. These etching patterns are distributed on the touch module matrix 10 according to a specific array layout. The silver paste trace laser etching pattern 12 provides the physical support and electrical connection basis for the first FPC part 11. The silver paste has good electrical conductivity, and the circuit pattern made by the laser etching technology can accurately guide the current, enabling the first FPC part 11 to achieve effective electrical connection with the circuit inside the touch module matrix 10. Multiple groups of display module bodies 50 correspond one-to-one with multiple groups of silver paste trace laser etching patterns 12; this corresponding relationship ensures the accuracy of signal transmission from the touch module matrix 10 to the display module body 50. When the touch module receives a touch signal, the signal can be accurately transmitted to the corresponding display module body 50 through the silver paste trace laser etching pattern 12 and the first FPC part 11.

[0036] Please refer to Figure 6 , the display module body 50 includes a reflective layer 52 provided on a base layer, a light guide layer 53 provided on the reflective layer 52, a diffusion layer 54 provided on the light guide layer 53, a lower brightness enhancement layer 55 provided on the diffusion layer 54, an upper brightness enhancement layer 56 provided on the lower brightness enhancement layer 55, an adhesive layer 57 provided on the upper brightness enhancement layer 56, a lower brightening layer 58 provided on the adhesive layer 57, a liquid crystal display key layer 60 provided on the lower brightening layer 58, and an upper brightening layer 59 provided on the liquid crystal display key layer 60. Among them, the liquid crystal display key layer 60 is a color filter layer or a thin film transistor layer, and the second FPC part 51 is provided on the liquid crystal display key layer 60. The reflective layer 52 is provided on the base layer, and its main function is to reflect light; the light guide layer 53 is located above the reflective layer 52, and its function is to guide the light emitted by the backlight source to the entire display area; the diffusion layer 54 is provided on the light guide layer 53, and it can further disperse the light, making the light more evenly distributed; the main function of the brightness enhancement layer is to enhance the intensity of the light. They converge and enhance the light through special optical materials and structures, improving the display brightness; the adhesive layer 57 is provided on the upper brightness enhancement layer 56, and it plays a role in bonding the upper brightness enhancement layer 56 and the lower brightening layer 58, ensuring the tight combination between layers, preventing layer separation, and ensuring the structural stability of the display module; the brightening layer is used to further improve the display brightness and clarity; the liquid crystal display key layer 60 is the core part of the display module. If it is a color filter layer, it filters the light of the backlight source, decomposes white light into red, green, and blue primary colors, and cooperates with the thin film transistor layer to achieve color display. If it is a thin film transistor layer, it acts as a switching element, accurately controlling the state of the liquid crystal molecules of each pixel point, thereby adjusting the light transmission amount, and working together with the color filter layer to finally achieve the image display function of the liquid crystal display screen.

[0037] Please refer toFigure 4 , a positioning structure 13 is provided at the edges of the first large OCA adhesive layer 20 and the second large OCA adhesive layer 30. The positioning structure 13 is designed specifically for accurately positioning the OCA adhesive layer during the lamination process. The positioning structure 13 can be in the form of some protrusions, grooves or marks, etc.; the positioning structure 13 can precisely control the relative positions of the first large OCA adhesive layer 20 and the touch module matrix 10, and the second large OCA adhesive layer 30 and related components; since the OCA adhesive layer plays important roles such as bonding and signal transmission in the touch display screen assembly, the improvement of its lamination accuracy directly affects the performance of the entire display screen; the edge positioning structure 13 can reduce the accumulation of possible position deviations during the lamination process; compared with the situation without the positioning structure 13, it can more effectively avoid the final poor lamination phenomenon caused by the accumulation of minute errors in multiple lamination steps, thereby improving the overall lamination accuracy of the touch display screen assembly.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims within the present utility model.

Claims

1. A large sheet combined touch display screen assembly, characterized in that, It includes a touch module matrix (10), a first large OCA glue layer (20) attached to the upper end face of the touch module matrix (10), a second large OCA glue layer (30) attached to the lower end face of the touch module matrix (10), multiple glass cover plates (40) attached to the first large OCA glue layer (20) and corresponding to the touch module matrix (10), and multiple groups of display module bodies (50) attached to the lower end face of the second large OCA glue layer (30) and corresponding to the touch module matrix (10); among them, The upper end face of the touch module matrix (10) has a plurality of first FPC parts (11) arranged in an array, and a plurality of first slots (21) arranged in an array are formed on the first large OCA glue layer (20), and the plurality of first FPC parts (11) correspond to the plurality of first slots (21); The upper end face of the display module body (50) has a second FPC part (51), and a plurality of second slots (31) arranged in an array are formed on the second large OCA glue layer (30), and the second FPC part (51) corresponds to the second slots (31).

2. The large sheet combined touch display screen assembly according to claim 1, wherein, A plurality of groups of silver paste trace laser etching patterns (12) are arranged in an array on the touch module matrix (10), the first FPC part (11) is formed on the silver paste trace laser etching pattern (12), and the plurality of groups of display module bodies (50) correspond to the plurality of groups of silver paste trace laser etching patterns (12) one by one.

3. The large-piece combined touch display screen assembly according to claim 2, wherein The display module body (50) includes a reflective layer (52) arranged on a base layer, a light guide layer (53) arranged on the reflective layer (52), a diffusion layer (54) arranged on the light guide layer (53), a lower brightness enhancement layer (55) arranged on the diffusion layer (54), an upper brightness enhancement layer (56) arranged on the lower brightness enhancement layer (55), an adhesive layer (57) arranged on the upper brightness enhancement layer (56), a lower brightening layer (58) arranged on the adhesive layer (57), a liquid crystal display key layer (60) arranged on the lower brightening layer (58), and an upper brightening layer (59) arranged on the liquid crystal display key layer (60), where the liquid crystal display key layer (60) is a color filter layer or a thin film transistor layer, and the second FPC part (51) is arranged on the liquid crystal display key layer (60).

4. A large sheet combined touch display screen assembly according to claim 1, characterized in that, The total thickness of the touch module matrix (10) is 1.9 mm - 2.2 mm, and the total thickness of the display module body (50) is 1.4 mm - 1.7 mm.

5. A large-sheet combined touch display screen assembly according to claim 4, characterized in that The total thickness of the touch module matrix (10) is 2.05 mm, and the total thickness of the display module body (50) is 1.56 mm.

6. The large sheet combined touch display screen assembly according to claim 1, wherein, Positioning structures (13) are arranged on the edges of the first large OCA glue layer (20) and the second large OCA glue layer (30).

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