CN216670706U

CN216670706U - Long-life capacitive touch screen

Info

Publication number: CN216670706U
Application number: CN202123005463.1U
Authority: CN
Inventors: 伊方杰
Original assignee: Shenzhen Jiazhong Electronic Co ltd
Current assignee: Shenzhen Jiazhong Electronic Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-03
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a long-life capacitive touch screen which comprises a frame, wherein a mounting groove is formed in the frame, a protective layer is mounted in the mounting groove, a filter layer is arranged in the protective layer, an anti-oxidation layer is arranged in the filter layer, an upper conductive layer is arranged on the inner side of the anti-oxidation layer, a substrate is fixedly mounted at the lower part of the upper conductive layer, a lower conductive layer is fixedly mounted below the substrate, a liquid crystal display screen is fixedly mounted below the lower conductive layer, and a heat conduction layer is fixedly mounted at the bottom of the liquid crystal display screen. The filter layer can ensure the display conduction efficiency and avoid the visual obstruction caused by factors in the environment; the antioxidation layer separates the external environment from the inside, and prevents the internal components from contacting the air and causing oxidation for a long time, thereby prolonging the service life of the touch screen. The bottom of the utility model is provided with the heat conduction layer, so that heat can be quickly conducted in the use process, the overheating of a screen caused by heat accumulation is avoided, and the normal service life of internal components is effectively protected.

Description

Long-life capacitive touch screen

Technical Field

The utility model relates to the technical field of capacitive touch screens, in particular to a long-service-life capacitive touch screen.

Background

The capacitive touch screen technology works by using current induction of a human body. The capacitive touch screen is a four-layer composite glass screen, the inner surface and the interlayer of the glass screen are respectively coated with one layer of ITO, the outermost layer is a thin-layer silica glass protective layer, the interlayer ITO coating serves as a working surface, four electrodes are led out from four corners, and the inner layer of ITO serves as a shielding layer to guarantee a good working environment. When a finger touches the metal layer, a coupling capacitance is formed between the user and the touch screen surface due to the electric field of the human body, and for high frequency currents, the capacitance is a direct conductor, so that the finger draws a small current from the contact point. The currents respectively flow out of the electrodes on the four corners of the touch screen, the currents flowing through the four electrodes are in direct proportion to the distances from the fingers to the four corners, and the controller obtains the position of a touch point through accurate calculation of the proportion of the four currents.

When a user touches the capacitive screen, due to a human body electric field, a coupling capacitor is formed between the finger of the user and the working surface, because the working surface is connected with a high-frequency signal, a very small current is absorbed by the finger, the current flows out of the electrodes on the four corners of the screen respectively, theoretically, the current flowing through the four electrodes is proportional to the distance from the finger to the four corners, and the controller obtains the position through precise calculation of the proportion of the four currents. 99% accuracy can be achieved with a response speed of less than 3 ms. At present, due to the fact that an existing capacitive touch screen is simple in structure, the service life of the existing capacitive touch screen is shortened after the existing capacitive touch screen is used for a long time, and the long-term use requirement cannot be met.

Based on the above, the present invention provides a long-life capacitive touch screen to solve the above problems.

Disclosure of Invention

The utility model aims to provide a long-service-life capacitive touch screen to solve the problems that the conventional capacitive touch screen has a simple structure, so that the service life of the conventional capacitive touch screen is shortened after the conventional capacitive touch screen is used for a long time, and the long-term use requirement cannot be met.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a long-life capacitive touch screen, includes the frame, the mounting groove has been seted up on the frame, install the inoxidizing coating in the mounting groove, the inside filter layer that is provided with of inoxidizing coating, the inside antioxidation layer that is provided with of filter layer, the antioxidation layer inboard is provided with the conducting layer, go up conducting layer lower part fixed mounting and have the base plate, base plate below fixed mounting has lower conducting layer, conducting layer below fixed mounting has liquid crystal display down, liquid crystal display bottom fixed mounting has the heat-conducting layer.

As a further scheme of the utility model, the protective layer is a toughened explosion-proof film.

As a further scheme of the utility model, two ends of the oxidation resisting layer are fixedly and hermetically mounted with the frame.

As a further aspect of the present invention, the heat conducting layer is an insulating heat conducting layer.

As a further aspect of the present invention, the protection layer is detachably mounted in the mounting groove.

Compared with the prior art, the utility model has the beneficial effects that:

the long-life capacitive touch screen is internally provided with the filter layer and the anti-oxidation layer, the filter layer can ensure the display conduction efficiency, and the visual obstruction caused by factors in the environment is avoided; the antioxidation layer separates the external environment from the inside, and prevents the internal components from contacting the air and causing oxidation for a long time, thereby prolonging the service life of the touch screen.

The bottom of the utility model is provided with the heat conduction layer, so that heat can be quickly conducted in the use process, the overheating of a screen caused by heat accumulation is avoided, and the normal service life of internal components is effectively protected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of the overall structure of a long-life capacitive touch panel according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a frame; 2. mounting grooves; 3. a protective layer; 4. a filter layer; 5. an anti-oxidation layer; 6. an upper conductive layer; 7. a substrate; 8. a lower conductive layer; 9. a liquid crystal display screen; 10. a thermally conductive layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

As shown in fig. 1, the present invention provides a long-life capacitive touch screen in which,

fig. 1 is a schematic cross-sectional view of the overall structure of a long-life capacitive touch screen according to the present invention;

it can be seen from fig. 1 that, in practical application, a high life capacitive touch screen, includes frame 1, mounting groove 2 has been seted up on frame 1, install inoxidizing coating 3 in mounting groove 2, the inside filter layer 4 that is provided with of inoxidizing coating 3, the inside oxidation resisting coating 5 that is provided with of filter layer 4, oxidation resisting coating 5 inboard is provided with conducting layer 6, 6 lower part fixed mounting of going up conducting layer has base plate 7, base plate 7 below fixed mounting has lower conducting

layer

8, 8 below fixed mounting of lower conducting layer has liquid crystal display 9, liquid crystal display 9 bottom fixed mounting has heat-conducting layer 10.

The protective layer 3 is a toughened explosion-proof membrane. And two ends of the oxidation resisting layer 5 are fixedly and hermetically mounted with the frame 1. The heat conducting layer 10 is an insulating heat conducting layer. The protective layer 3 is detachably arranged in the mounting groove 2.

The long-life capacitive touch screen is internally provided with the filter layer and the anti-oxidation layer, the filter layer can ensure the display conduction efficiency, and the visual obstruction caused by factors in the environment is avoided; the antioxidation layer separates the external environment from the inside, and prevents the internal components from contacting the air and causing oxidation for a long time, thereby prolonging the service life of the touch screen. The bottom of the utility model is provided with the heat conduction layer, so that heat can be quickly conducted in the use process, the overheating of a screen caused by heat accumulation is avoided, and the normal service life of internal components is effectively protected.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a long-life capacitive touch screen, its characterized in that, includes frame (1), mounting groove (2) have been seted up on frame (1), install inoxidizing coating (3) in mounting groove (2), inoxidizing coating (3) inside filter layer (4) that is provided with, filter layer (4) inside is provided with oxidation resisting layer (5), oxidation resisting layer (5) inboard is provided with conducting layer (6), go up conducting layer (6) lower part fixed mounting has base plate (7), base plate (7) below fixed mounting has lower conducting layer (8), conducting layer (8) below fixed mounting has liquid crystal display (9) down, liquid crystal display (9) bottom fixed mounting has heat-conducting layer (10).

2. A long-life capacitive touch screen according to claim 1, wherein the protective layer (3) is a tempered explosion-proof membrane.

3. A long-life capacitive touch screen according to claim 1, wherein both ends of the oxidation-resistant layer (5) are fixedly and hermetically mounted with the frame (1).

4. A long-life capacitive touch screen according to claim 1, wherein the heat conducting layer (10) is an insulating heat conducting layer.

5. A long-life capacitive touch screen according to claim 1, wherein the protective layer (3) is detachably mounted in the mounting groove (2).