Touch display screen structure
By implementing touch sensing and heating functions on the upper and lower levels of the ITO conductive glass layer of the CTP capacitive screen structure, the high cost, heavy structure and complex production problems of the normal operation of the LCM module in low temperature environments are solved, and cost savings, structural optimization and production improvement are achieved.
Patent Information
- Application Number
- CN202421979695.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-15
AI Technical Summary
In order to ensure the normal operation of the LCM module in a low temperature environment, heating glass needs to be added between CTP and LCM, resulting in increased costs, thickened structures, and increased production complexity.
The ITO conductive glass layer of the CTP capacitance screen structure is designed as an integrated structure. The upper layer realizes the CTP SENSOR function, the lower layer realizes the heating function, integrates touch sensing and heating functions, and cancels the heating glass.
Significantly reduce raw material costs, maintain the light and light structure of the product, simplify production processes, and improve production efficiency and product quality stability.
Smart Images
Figure CN223065727U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of touch screens, and particularly relates to a touch display screen structure. Background Art
[0002] At present, for products used in handheld logistics equipment for cold chain and products with requirements for use in low-temperature environments, it is necessary to meet the standard of an operating temperature of -30°C. For components such as LCMs, many mainstream LCMs on the market generally meet the standard of an operating temperature of -20°C. Therefore, when the temperature is lower than -20°C, in order to ensure that these components can still work normally, heat preservation measures need to be taken for the LCM. The existing conventional method is to add a layer of heating glass between the CTP (capacitive touch screen) and the LCM to achieve the heat preservation function. However, this method has the following problems:
[0003] 1) In terms of cost:
[0004] Adding a layer of material means that additional heating glass needs to be purchased, increasing the cost of raw materials.
[0005] For example, if the material cost of originally producing 1000 products is 10,000 yuan, adding this layer of heating glass may increase the cost by 2000 yuan.
[0006] 2) In terms of structure:
[0007] It thickens the structure of the product, which may affect the overall size and appearance design of the product.
[0008] For example, if the original thickness of the product is 5 mm, adding a layer of heating glass may make it become 7 mm, which may affect the use or installation of the product in some narrow spaces.
[0009] 3) In terms of production:
[0010] Adding one more lamination process increases the complexity and time cost of production.
[0011] Assume that the normal lamination process takes 1 hour to complete 100 products. Adding one more lamination may extend the time to 1.5 hours.
[0012] Moreover, each additional lamination operation will introduce new uncertainties, thus affecting the yield and production efficiency of the product.
[0013] For example, problems such as bubbles and position deviation may occur during lamination, resulting in an increase in the unqualified rate of the product; at the same time, multiple laminations will also reduce the production quantity per unit time.
[0014] In summary, the current conventional heat preservation measures taken to ensure the normal operation of the LCM in a low-temperature environment, although solving the temperature problem to a certain extent, have brought adverse effects in terms of cost, structure, and production. Summary of the Invention
[0015] The present utility model aims to overcome the above deficiencies and provides a technical solution to solve the above problems.
[0016] A touch display screen structure includes a CTP capacitive screen structure and an LCM module, and the CTP capacitive screen structure and the LCM module are adhered together through a first OCA adhesive layer;
[0017] Among them, the CTP capacitive screen structure has an ITO conductive glass layer. The upper layer surface of the ITO conductive glass layer is used to implement the CTP SENSOR function of the corresponding CTP capacitive screen structure, and the lower layer surface of the ITO conductive glass layer is used to implement the heat generation function of the corresponding LCM module.
[0018] As a further solution of the present utility model: The ITO conductive glass layer includes an ITO conductive glass body, a first functional layer provided on the upper layer surface of the ITO conductive glass body, and a second functional layer provided on the lower layer surface of the ITO conductive glass body. The first functional layer is used to implement the CTP SENSOR function of the corresponding CTP capacitive screen structure, and the second functional layer is used to implement the heat generation function of the corresponding LCM module;
[0019] Among them, the ITO conductive glass body, the first functional layer, and the second functional layer are an integrated structure.
[0020] As a further solution of the present utility model: The first functional layer is composed of ITO conductive lines arranged in a matrix.
[0021] As a further solution of the present utility model: The ITO conductive lines of the first functional layer are formed by a lithography process, and an oxide layer is present on the surface of the lines.
[0022] As a further solution of the present utility model: The second functional layer is composed of continuously and uniformly distributed ITO thin films.
[0023] As a further solution of the present utility model: The ITO thin films of the second functional layer are deposited by a magnetron sputtering process.
[0024] As a further solution of the present utility model: The CTP capacitive screen structure sequentially includes a cover glass layer, a second OCA adhesive layer, and the ITO conductive glass layer from top to bottom.
[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0026] 1. Significant cost reduction: There is no longer a need to purchase an additional separate material of heated glass, significantly reducing the raw material cost. Taking the example of producing 1000 products mentioned before, the original cost was 10,000 yuan, and adding heated glass would increase the cost by 2000 yuan. However, the new design avoids this additional expenditure. For large-scale production, the cost saved is quite substantial, which helps to enhance the price competitiveness of the product in the market.
[0027] 2. Optimized structural design: It avoids the increase in product thickness caused by adding a layer of heated glass. For example, the original product thickness was 5mm, and adding heated glass might increase it to 7mm. The new design maintains the original thin and light structure of the product, which not only better conforms to the trend of modern electronic products being thinner and lighter, but also in practical applications, it will not affect the use or installation of the product in a narrow space due to the thickness change, broadening the applicable range of the product.
[0028] 3. Efficient production process: It reduces one lamination process, greatly simplifying the production process. Assuming that it takes 1 hour to laminate 100 products normally, adding one more lamination might extend it to 1.5 hours. The new design saves this part of the time, improving the production efficiency. At the same time, reducing the number of laminations reduces the uncertain factors in production. Problems such as bubbles and position deviation that might occur during multiple laminations in the past are avoided, thus significantly reducing the rejection rate of the product. This means that more qualified products can be produced per unit time, enhancing the overall production efficiency and the stability of product quality.
[0029] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Description of the Drawings
[0030] 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 use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0031] Figure 1 is a schematic diagram of the hierarchical structure of the prior art;
[0032] Figure 2 is a schematic diagram of a partial structure of the prior art;
[0033] Figure 3 is a schematic diagram of the hierarchical structure of the present utility model;
[0034] Figure 4It is a partial structural schematic diagram of the utility model.
[0035] The reference numerals and names in the figures are as follows:
[0036] 1. CTP capacitive screen structure; 2. LCM module; 3. First OCA bonding layer; 4. ITO conductive glass layer; 5. ITO conductive glass body; 6. First functional layer; 7. Second functional layer; 8. Cover glass layer; 9. Second OCA bonding layer. DETAILED DESCRIPTION
[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0038] See also Figures 1-4 In an embodiment of the utility model, a touch display screen structure includes a CTP capacitive screen structure 1 and an LCM module 2, wherein the CTP capacitive screen structure 1 and the LCM module 2 are bonded together through a first OCA bonding layer 3;
[0039] Among them, the CTP capacitive screen structure 1 has an ITO conductive glass layer 4, the upper layer of the ITO conductive glass layer 4 is used to realize the CTP SENSOR function corresponding to the CTP capacitive screen structure 1, and the lower layer of the ITO conductive glass layer 4 is used to realize the heating function corresponding to the LCM module 2.
[0040] In the technical solution of the utility model, by utilizing the characteristics of the ITO conductive glass layer 4, different functions are given to its upper and lower layers respectively: the upper layer realizes the CTP SENSOR function for accurately sensing touch operations; the lower layer realizes the heating function to provide the required temperature environment for the LCM module 2 to ensure its normal operation at low temperatures; this design idea cleverly integrates the touch sensing and heating functions on the same ITO conductive glass layer 4, replacing the traditional method of adding a separate heating glass between the CTP and the LCM.
[0041] Through this design, we achieve:
[0042] 1. Significant cost reduction: There is no longer a need to purchase an additional separate material of heated glass, significantly reducing the raw material cost. Taking the previous example of producing 1000 products, the original cost was 10,000 yuan, and adding heated glass would increase the cost by 2000 yuan. However, the new design avoids this additional expenditure. For large-scale production, the cost saved is quite substantial, which helps to enhance the price competitiveness of the product in the market.
[0043] 2. Optimized structural design: It avoids the increase in product thickness caused by adding a layer of heated glass. For example, the original product thickness was 5mm, and adding heated glass might increase it to 7mm. The new design maintains the original thin and light structure of the product, which not only better conforms to the trend of modern electronic products being thinner and lighter but also, in practical applications, will not affect the use or installation of the product in a narrow space due to the thickness change, broadening the scope of application of the product.
[0044] 3. Efficient production process: It reduces one lamination process, greatly simplifying the production process. Suppose it takes 1 hour to laminate 100 products normally, and adding one more lamination might extend it to 1.5 hours. The new design saves this part of the time, improving the production efficiency. At the same time, reducing the number of laminations reduces the uncertain factors in production. Problems such as bubbles and position deviation that might occur during multiple laminations in the past are avoided, thus significantly reducing the unqualified rate of the product. This means that more qualified products can be produced per unit time, enhancing the overall production efficiency and the stability of product quality.
[0045] In summary, this innovative touch display screen structural design, while effectively ensuring the normal operation of the LCM module 2 in a low-temperature environment, successfully solves the problems of high cost, heavy structure, and complex production brought about by traditional thermal insulation measures, bringing significant advantages to the performance improvement, cost control, and market promotion of the product.
[0046] As Figures 1-2 , in the prior art, a layer of heated glass is added between the CTP (capacitive touch screen) and the LCM to achieve the thermal insulation function, and its total thickness is 4.9 ± 0.2mm; as Figures 3-4 , adopting this touch display screen structural design, its total thickness is 4.05 ± 0.2mm, and the total thickness is significantly reduced.
[0047] In the embodiment of the present utility model, the ITO conductive glass layer 4 includes an ITO conductive glass body 5, a first functional layer 6 provided on the upper layer of the ITO conductive glass body 5, and a second functional layer 7 provided on the lower layer of the ITO conductive glass body 5. The first functional layer 6 is used to realize the CTP SENSOR function corresponding to the CTP capacitive screen structure 1, and the second functional layer 7 is used to realize the heating function corresponding to the LCM module 2;
[0048] Among them, the ITO conductive glass body 5, the first functional layer 6, and the second functional layer 7 are of an integral structure.
[0049] By respectively arranging the first functional layer 6 and the second functional layer 7 with specific functions on the upper and lower surfaces of the ITO conductive glass body 5, and these three layers form an integral structure. This integrated design makes full use of the characteristics of the ITO conductive glass, integrating the CTP SENSOR function required for touch sensing and the heating function for heating the LCM module 2 in the same glass structure. Thus, the functions that originally might require multiple independent components are effectively integrated into one ITO conductive glass structure, reducing the number of components and the assembly complexity, improving the compactness of the overall structure. At the same time, since the three layers are of an integral structure, problems such as loose connections and poor contacts that might occur between different components are avoided, thereby improving the stability and reliability of the product during long-term use. And compared with the way of stacking multiple independent components, the integrated structure is more conducive to realizing the thin and light of the product, meeting the pursuit of modern electronic products for a thin and light appearance.
[0050] In the embodiment of the present utility model, the first functional layer 6 is composed of ITO conductive lines arranged in a matrix. The ITO conductive lines of the first functional layer 6 are formed by a lithography process, and an oxide layer is present on the surface of the lines.
[0051] The first functional layer 6 adopts ITO conductive lines arranged in a matrix. This arrangement can form a dense sensing network on a plane; forming these conductive lines by a lithography process can achieve high-precision and highly consistent line patterns; the oxide layer on the surface of the lines plays a role in protecting and optimizing the conductive performance, reducing the oxidation and loss of the lines, and improving the conductivity and stability.
[0052] In the embodiment of the present utility model, the second functional layer 7 is composed of continuously and uniformly distributed ITO thin films; the ITO thin films of the second functional layer 7 are deposited by a magnetron sputtering process.
[0053] The second functional layer 7 adopts continuously and uniformly distributed ITO thin films. This distribution can ensure the uniformity of heat generation; depositing the ITO thin films by a magnetron sputtering process can precisely control the thickness, composition, and structure of the thin films, thereby achieving the required heating performance.
[0054] In summary, the ITO conductive glass layer 4 is mainly composed of the ITO conductive glass body 5, the first functional layer 6 provided on its upper surface, and the second functional layer 7 provided on its lower surface, and these three layers are of an integral structure.
[0055] The ITO conductive glass body 5 is usually composed of a glass substrate coated with indium tin oxide (ITO) thin films. ITO is a material with good conductivity and light transmittance.
[0056] The first functional layer 6 is composed of ITO conductive lines arranged in a matrix. These conductive lines are formed by a lithography process, which can precisely define the shape, position, and size of the lines, thereby achieving high-precision touch sensing detection. The oxide layer on the surface of the lines can, on the one hand, protect the lines and reduce the erosion and oxidation of the external environment; on the other hand, it can also optimize the conductive performance to a certain extent, making the transmission of touch signals more stable and accurate.
[0057] The second functional layer 7 is usually formed into a uniform ITO thin film through a magnetron sputtering process for realizing the heating function. When an electric current passes through this ITO thin film, heat is generated due to its resistance characteristics.
[0058] The principle of the entire ITO conductive glass layer 4 lies in using the conductivity of ITO and different structural designs to respectively realize the touch sensing and heating functions: in terms of touch sensing, the capacitance change caused by the touch operation is sensed through the conductive lines arranged in a matrix, thereby determining the touch position and action; in terms of heating, the resistance characteristics of the ITO thin film are utilized to generate heat when powered on, providing the required temperature conditions for related components.
[0059] In the embodiment of the present utility model, the CTP capacitive touch screen structure 1 sequentially includes a cover glass layer 8, a second OCA adhesive layer 9, and the ITO conductive glass layer 4 from top to bottom.
[0060] The cover glass layer 8 mainly serves to protect the internal structure and provide good surface touch and optical properties; the second OCA adhesive layer 9 is used to closely bond the cover glass layer 8 and the ITO conductive glass layer 4, ensuring firm and stable connection between the layers and reducing light refraction and reflection to improve the display effect; the ITO conductive glass layer 4 is the core part for realizing the touch sensing function.
[0061] 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 in the present utility model.
Claims
1. A touch display screen structure, characterized in that, It includes a CTP capacitive touch screen structure and an LCM module, and the CTP capacitive touch screen structure and the LCM module are adhered through a first OCA adhesive layer; Among them, the CTP capacitive touch screen structure has an ITO conductive glass layer. The upper surface of the ITO conductive glass layer is used to realize the CTP SENSOR function of the corresponding CTP capacitive touch screen structure, and the lower surface of the ITO conductive glass layer is used to realize the heat generation function of the corresponding LCM module.
2. A touch display screen structure according to claim 1, characterized in that The ITO conductive glass layer includes an ITO conductive glass body, a first functional layer provided on the upper surface of the ITO conductive glass body, and a second functional layer provided on the lower surface of the ITO conductive glass body. The first functional layer is used to realize the CTP SENSOR function of the corresponding CTP capacitive touch screen structure, and the second functional layer is used to realize the heat generation function of the corresponding LCM module; Among them, the ITO conductive glass body, the first functional layer, and the second functional layer are of an integral structure.
3. A touch display screen structure according to claim 2, characterized in that, The first functional layer is composed of ITO conductive lines arranged in a matrix.
4. A touch display screen structure according to claim 3, characterized in that, The ITO conductive lines of the first functional layer are formed by a lithography process, and an oxide layer is present on the surface of the lines.
5. A touch display screen structure according to claim 2, characterized in that, The second functional layer is composed of continuously and uniformly distributed ITO thin films.
6. A touch display screen structure according to claim 5, wherein, The ITO thin films of the second functional layer are deposited by a magnetron sputtering process.
7. A touch display screen structure according to any one of claims 1-6, characterized in that, The CTP capacitive touch screen structure sequentially includes a cover glass layer, a second OCA adhesive layer, and the ITO conductive glass layer from top to bottom.