Touch sensitive screen and touch sensitive lamp

Abstract

The utility model provides a touch sensitive screen and touch sensitive lamp, including touch component, the touch component includes ITO layer and OCA optical cement shadow elimination layer, the ITO layer includes a plurality of unit subareas, each unit subarea is distributed with horizontal line and vertical line, the projection of horizontal line and the projection of vertical line are interlaced to form the grid shape, the OCA optical cement shadow elimination layer is arranged on the OCA optical cement shadow elimination layer, the OCA optical cement shadow elimination layer is arranged on the OCA optical cement shadow elimination layer, and the OCA optical cement shadow elimination layer is arranged on the OCA optical cement shadow elimination layer. Lines in each unit partition are gathered at the outer edge of the ITO layer; according to the invention, the ITO layer is designed into a structure with a plurality of unit partitions, and the latticed wires are arranged in each unit partition to form a large-area and small-grid mode, so that stable induction of large-area touch can be realized, and parasitic capacitance can be reduced; the optical cement shadow eliminating layer is arranged on the surface of the base material to be subjected to ITO treatment, the reflectivity difference between the part with the ITO electrode layer and the part without the ITO electrode layer is controlled within 1%, the visual degree of ITO is reduced, and the overall attractiveness and practicability of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of touch technology, specifically a touch-sensitive screen and a touch-sensitive lamp. Background Technology

[0002] In the existing technology, current automotive sensor designs use ITO or PEDOT processes. However, because ITO is an inorganic material, it has a high light reflectivity. Once there is a difference in reflectivity between the ITO surface and the substrate, the ITO pattern will be visible, causing the sensor wiring to be visible under the transparent lampshade of the touch-sensitive light, and also causing a certain degree of attenuation of the light source.

[0003] The above-mentioned problems are found in large-sized touch-sensitive lights (such as the rear headlights of MPVs, 70...). This is especially noticeable on the 90mm sensor. If the traces are densely packed on the touch sensor, it will block the light source, affect the aesthetics, and generate parasitic capacitance. If the traces are reduced or the traces are made to go around the edge, the sensitivity will be reduced.

[0004] To balance sensitivity and light transmission, the inventors improved the grid laying method to reduce the area occupied by the wiring and added an anti-shadow layer to change the light refractive index to hide the wiring, thus enabling this type of large-sized touch-sensitive surface to have good performance. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a touch-sensitive screen and a touch-sensitive lamp. The technical solution adopted by this utility model is as follows:

[0006] A touch-sensitive screen includes a touch component, the touch component including an ITO layer and an OCA optical adhesive anti-reflection layer, the ITO layer including several unit partitions, each unit partition having horizontal and vertical lines arranged in a grid pattern, the projections of the horizontal and vertical lines intersecting to form a grid; the lines in each unit partition converge at the outer edge of the ITO layer.

[0007] The above design involves coating the substrate surface to be treated with an Index Matching film OCA optical adhesive anti-reflection layer, which is a refractive index matching coating. This coating can control light reflection, keeping the reflectivity difference between the parts with and without the ITO electrode layer within 1%, thus reducing the visibility of ITO. The ITO layer is designed with several unit partitions, each with a grid pattern of large and small grids, which enables stable sensing of large-area touch and reduces parasitic capacitance. By using the MCU to determine the touch values ​​of multiple partitions, distance sensing and touch functions can be realized, meeting the usage requirements of drivers and passengers.

[0008] Preferably, an optical thin film layer is disposed on the surface of the OCA optical adhesive anti-reflective layer.

[0009] Preferably, the boundary of each unit partition of the ITO layer is at least partially the outer edge of the ITO layer; that is, part of the edge of each unit partition coincides with the outer edge of the entire ITO layer, which facilitates the convergence of lines at the outer edge of the ITO layer.

[0010] Preferably, the shape of each unit partition of the ITO layer is a regular shape or approximately a regular shape, including rectangles, triangles, trapezoids, and polygons with more than 4 sides, to facilitate line layout and convergence.

[0011] Preferably, the touch component includes, from top to bottom, an ITO film layer, an ITO coating layer, an OCA optical adhesive anti-reflection layer, and an optical thin film layer; an insulating layer is provided between the ITO layer and the OCA optical adhesive anti-reflection layer;

[0012] Regarding ITO films: These typically refer to indium tin oxide (ITO) films formed on a substrate using methods such as physical vapor deposition (PVD) or chemical vapor deposition (CVD). They possess high light transmittance and excellent electrical conductivity, and are widely used in electronic displays, solar cells, and other fields.

[0013] Regarding ITO coatings: Specifically, this refers to ITO conductive thin film layers formed by sputtering onto transparent organic thin film materials using methods such as magnetron sputtering, followed by high-temperature annealing to obtain high-tech products. It also possesses high light transmittance and good conductivity, and is commonly used in devices such as touchscreens and displays.

[0014] In terms of preparation methods, ITO films can be prepared using various methods, including magnetron sputtering, chemical vapor deposition, and sol-gel methods. These methods can control the thickness and uniformity of the film, thereby optimizing its electrical and optical properties. ITO coatings are mainly prepared by magnetron sputtering, which uses high-purity ITO targets and plasma bombardment of the target surface under vacuum conditions to deposit atoms or molecules onto the substrate to form a thin film. This method can produce high-quality ITO films suitable for high-end electronic devices.

[0015] In terms of applications, ITO films are widely used in liquid crystal displays (LCDs), organic light-emitting diodes (OLEDs), touchscreens, and solar cells as transparent electrodes or conductive layers. ITO coatings are primarily used in the manufacture of touchscreens for consumer electronics products such as touchscreens, smartphones, and tablets, providing excellent conductivity and touch sensitivity.

[0016] Regarding performance characteristics, ITO films have high light transmittance (up to 90% or more), low resistivity (10^-4 to 10^-3 Ω·cm) and good mechanical properties, such as wear resistance and chemical corrosion resistance. In addition to high light transmittance and low resistivity, ITO coatings also have excellent adhesion and durability, and can maintain stable performance in complex environments.

[0017] A touch-sensitive lamp includes a lampshade and the aforementioned touch-sensitive screen; further, the touch-sensitive lamp also includes an emulsion board, a housing, a circuit board assembly, pins, and a base.

[0018] The beneficial effects of this invention are as follows: The invention designs the ITO layer into a structure with several unit partitions, and sets grid-like wiring in each unit partition to form a large area + small grid pattern, which can achieve stable sensing of large-area touch and reduce parasitic capacitance; an optical adhesive anti-reflection layer is set on the surface of the substrate to be treated with ITO to control the difference in reflectivity between the part with ITO electrode layer and the part without ITO electrode layer to within 1%, reducing the visibility of ITO and improving the overall aesthetics and practicality of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0020] Figure 1 This is a schematic diagram of the ITO layer cell partitioning;

[0021] Figure 2 This is a schematic diagram of the touch component;

[0022] Figure 3 An exploded view of the structure of a touch-sensitive light;

[0023] In the diagram, 1-lampshade, 11-felt, 2-touch component, 3-emulsion board, 4-housing shell, 5-circuit board assembly, 51-pin, 6-base. Detailed Implementation

[0024] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings.

[0025] It should be noted that the directional and positional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0026] Example

[0027] like Figure 3 As shown, a touch-sensitive lamp includes a lampshade 1 and a touch-sensitive screen, an emulsion plate 3, a housing 4, a circuit board assembly 5, a pin 51, and a base 6 disposed within the lampshade 1.

[0028] like Figure 2 As shown, the touch-sensitive screen includes a substrate and a touch component 2. The touch component 2 includes, from top to bottom, an optical adhesive layer, an ITO layer, an ITO film layer, an ITO coating layer, a silver paste layer, an insulating layer, an OCA optical adhesive anti-reflection layer, an optical thin film layer, and foam.

[0029] Figure 2 The diagram only shows the stacking order and does not mean that each layer completely covers the surface of the layer above or below it. For example, foam cannot cover the layer above or below it.

[0030] Specifically, such as Figure 1 As shown, the ITO layer includes several independent unit partitions (K1-K8). Each unit partition has horizontal and vertical lines arranged in a grid pattern. The projections of the horizontal and vertical lines intersect to form a grid. The shape of each unit partition of the ITO layer is approximately a regular shape (rectangle, triangle). The edge of each unit partition coincides with the outer edge of the entire ITO layer, which facilitates the convergence of the lines in each unit partition at the outer edge of the ITO layer, thus facilitating line arrangement and convergence.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A touch sensitive screen comprising a touch assembly (2), characterised in that: The touch component (2) comprises an ITO layer and an OCA optical glue shadow elimination layer, the ITO layer comprises a plurality of unit partitions, a horizontal line and a vertical line are arranged in each unit partition, and projections of the horizontal line and the vertical line are staggered in a grid shape; the lines in each unit partition converge at an outer edge of the ITO layer.

2. The touch sensitive screen of claim 1, wherein: A surface of the OCA optical glue shadow elimination layer is provided with an optical film layer.

3. The touch sensitive screen of claim 1, wherein: A boundary of each unit partition of the ITO layer is at least partially an outer edge of the ITO layer.

4. The touch sensitive screen of claim 3, wherein: A shape of each unit partition of the ITO layer is / is approximately a regular graph, and the regular graph comprises a rectangle, a triangle, a trapezoid or a polygon with more than four sides.

5. The touch sensitive screen of claim 1, wherein: The touch component (2) comprises, from top to bottom, an ITO film layer, an ITO plating layer, an OCA optical glue shadow elimination layer and an optical film layer.

6. The touch sensitive screen of claim 5, wherein: An insulating layer is arranged between the ITO layer and the OCA optical glue shadow elimination layer.

7. A touch-sensitive lamp, comprising a lampshade (1) and a touch-sensitive screen as claimed in any one of claims 1-6 arranged in the lampshade (1).

8. A touch sensitive lamp as claimed in claim 7, characterized in that: Further comprising an emulsification plate (3), an outer shell (4), a circuit board assembly (5), a pin (51) and a base (6).

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