CN216450052U

CN216450052U - Low-cost capacitive touch screen

Info

Publication number: CN216450052U
Application number: CN202122940324.1U
Authority: CN
Inventors: 吴仕坤; 杨晓东
Original assignee: Jiangmen Yeebo Semiconductor Co ltd
Current assignee: Jiangmen Yeebo Semiconductor Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-05-06
Anticipated expiration: 2031-11-25

Abstract

The utility model provides a low-cost capacitive touch screen which comprises a touch screen body, a liquid crystal display and a control unit, wherein the touch screen body comprises a plurality of liquid crystal boxes which are independently arranged, and each liquid crystal box is provided with two electrified electrodes; the number of the pins is matched with that of the liquid crystal boxes; each pin is electrically connected with the electrified electrode. According to the utility model, a plurality of liquid crystal boxes are distributed at the position needing to be touched in advance according to requirements and are matched through connection of the electrified electrodes and pins so as to capture touch signals.

Description

Low-cost capacitive touch screen

Technical Field

The utility model relates to the technical field of capacitive touch screens, in particular to a low-cost capacitive touch screen.

Background

Traditional capacitive touch screen need be done complicated circuit, except the etching that needs to do the ITO pattern, still needs complicated processes such as silk screen printing insulating oil, conductive silver thick liquid, and laminating technology still need be done to G + G or G + F's structure moreover, and the process flow is complicated, and the production degree of difficulty is high, problem such as with high costs to the product that has low-cost requirement, can't satisfy the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-cost capacitive touch screen, and aims to solve the problem that the cost of the capacitive touch screen in the prior art is high.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a low-cost capacitive touch screen which comprises a touch screen body, a liquid crystal display and a control unit, wherein the touch screen body comprises a plurality of liquid crystal boxes which are independently arranged, and each liquid crystal box is provided with two electrified electrodes; the number of the pins is matched with that of the liquid crystal boxes; each pin is electrically connected with the electrified electrode.

Compared with the prior art, the touch screen body comprises a plurality of liquid crystal boxes which are independently arranged, the liquid crystal boxes are distributed at the positions needing to be touched in advance according to requirements, and the touch signals are led out through the connection and the cooperation of the electrified electrodes and pins, so that whether the liquid crystal boxes are touched or not can be known.

In a preferred embodiment, the touch screen body comprises a surface substrate glass, a surface ITO layer, a bottom ITO layer and a bottom substrate glass; the surface ITO layer is arranged on the lower side surface of the surface substrate glass, and a plurality of first areas are arranged on the surface ITO layer; the bottom ITO layer is arranged on the upper side face of the bottom substrate glass, and a plurality of second areas are arranged on the bottom ITO layer; each second region and each first region are arranged correspondingly and are enclosed through edge sealing glue to form a liquid crystal box.

In a preferred embodiment, the liquid crystal box is filled with liquid crystal, one end of each of the two electrified electrodes is inserted into the liquid crystal, and the other end of each of the two electrified electrodes is connected with the pins.

In a preferred embodiment, each of the first areas and the second areas is a square or a circle or a customized pattern.

In a preferred embodiment, the liquid crystal in the liquid crystal box is waste liquid crystal.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic diagram of a low cost capacitive touch screen;

FIG. 2 is a schematic cross-sectional view of a liquid crystal cell.

Description of reference numerals:

100-touch screen body, 110-surface substrate glass, 120-surface ITO layer, 130-bottom ITO layer, 140-bottom substrate glass, 150-edge sealing glue, 210-first area, 220-second area, 300-liquid crystal box, 310-liquid crystal, 400-powered electrode and 500-stitch.

Detailed Description

In order to better illustrate the utility model, the utility model is described in further detail below with reference to the accompanying drawings.

It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The utility model provides a low-cost capacitive touch screen, which is provided with a plurality of fixed touch positions in advance, and can realize a touch function only by monitoring the contact condition of the touch positions without performing precise calculation by a controller.

Specifically, referring to fig. 1 to 2, the low-cost capacitive touch screen includes a touch screen body 100 including a plurality of independently disposed liquid crystal cells 300, wherein each liquid crystal cell 300 is provided with two powered electrodes 400; a plurality of pins 500, the number of the plurality of pins 500 is matched with the number of the plurality of liquid crystal cells 300; each pin 500 is electrically connected to the powered electrode 400.

Compared with the prior art, the touch screen body 100 of the utility model comprises a plurality of liquid crystal cells 300 which are independently arranged, the plurality of liquid crystal cells 300 are distributed at the position needing to be touched in advance according to requirements, and the touch signals are led out through the connection and cooperation of the electrified electrodes 400 and the pins 500, so that whether the liquid crystal cells 300 are touched or not can be known.

In one embodiment, the touch screen body 100 includes a top substrate glass 110, a top ITO layer, a bottom ITO layer, and a bottom substrate glass 140; the surface ITO layer is arranged on the lower side surface of the surface substrate glass 110, and a plurality of first areas 210 are arranged on the surface ITO layer; the bottom ITO layer is disposed on an upper side of the bottom substrate glass 140, and a plurality of second regions 220 are disposed on the bottom ITO layer; each of the second regions 220 is disposed corresponding to each of the first regions 210 and is enclosed by the edge sealing adhesive 150 to form a liquid crystal cell 300.

Preferably, the liquid crystal 310 is filled in the liquid crystal cell 300, one end of each of the two powered electrodes 400 is inserted into the liquid crystal 310, the other end of each of the two powered electrodes is connected to the pins 500, and the pins 500 are connected to a control circuit, so that the liquid crystal cell 300 is electrically connected to the control circuit.

Specifically, when a finger touches the touch screen, a coupling capacitance is formed between the user and the surface of the touch screen due to an electric field of a human body, a current value of the liquid crystal cell is changed, a current flows to the controller through the powered electrode 400, and the controller generates a touch signal by monitoring the change of the current value, so that a touch function is realized.

Preferably, the plurality of first regions 210 and the plurality of second regions 220 are square or circular or have a customized shape.

Preferably, the liquid crystal cell 300 adopts an LCD cell forming process, and only ITO patterns need to be etched and then combined into a cell, and compared with a normal LCD process, the present invention mainly ensures the touch function thereof, does not need printing PI and orientation, and reduces production processes, so that the LCD cell forming process of the liquid crystal cell 300 is simpler, to reduce the manufacturing cost.

In one embodiment, the liquid crystal 310 in the liquid crystal cell 300 is waste liquid crystal, and the waste liquid crystal is poured into the liquid crystal cell 300 to be used as a filler in the liquid crystal cell 300, so as to reduce the manufacturing cost, protect the environment and reduce the emission.

In the description of the present invention, it is to be understood that the terms "vertical", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the utility model and to simplify the description, and the words are not intended to imply anything else, unless stated otherwise.

The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. A low-cost capacitive touch screen, comprising:

the touch screen comprises a touch screen body and a control unit, wherein the touch screen body comprises a plurality of independently arranged liquid crystal boxes, and each liquid crystal box is provided with two electrified electrodes;

the number of the pins is matched with that of the liquid crystal boxes; each pin is electrically connected with the electrified electrode.

2. A low cost capacitive touch screen according to claim 1, wherein:

the touch screen body comprises surface substrate glass, a surface ITO layer, a bottom ITO layer and bottom substrate glass;

the surface ITO layer is arranged on the lower side surface of the surface substrate glass, and a plurality of first areas are arranged on the surface ITO layer;

the bottom ITO layer is arranged on the upper side face of the bottom substrate glass, and a plurality of second areas are arranged on the bottom ITO layer;

each second region and each first region are arranged correspondingly and are enclosed through edge sealing glue to form a liquid crystal box.

3. A low cost capacitive touch screen according to claim 2, wherein:

liquid crystal is filled in the liquid crystal box, one ends of the two electrified electrodes are inserted in the liquid crystal, and the other ends of the two electrified electrodes are connected with the pins.

4. A low cost capacitive touch screen according to claim 2, wherein:

the first areas and the second areas are square or round or are made of customized graphs.

5. A low cost capacitive touch screen according to claim 1, wherein:

the liquid crystal in the liquid crystal box is waste liquid crystal.