CN218896356U

CN218896356U - Hierarchical structure of electronic paper touch screen

Info

Publication number: CN218896356U
Application number: CN202223075663.9U
Authority: CN
Inventors: 肖忠平; 胡自萍
Original assignee: Jiangxi Xingtai Technology Co Ltd
Current assignee: Jiangxi Xingtai Technology Co Ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-21
Anticipated expiration: 2032-11-21

Abstract

The utility model provides a hierarchical structure of an electronic paper touch screen, which sequentially comprises the following steps: the electronic paper display screen layer comprises a thin film transistor layer, an electronic paper layer and a polystyrene protective film layer which are sequentially arranged from bottom to top; an optically clear adhesive layer; a touch layer including a light guide plate or an antiglare film; the touch circuit is arranged on the upper surface of the polystyrene protective film layer, the touch circuit senses the touch of a user in a capacitance sensing mode, and the touch circuit is electrically connected with the FPC of the electronic paper and is adhered to the touch layer through the optical transparent adhesive layer; the utility model makes the electronic paper screen lighter and thinner on the basis of not changing the touch function of the electronic paper original touch screen.

Description

Hierarchical structure of electronic paper touch screen

Technical Field

The utility model relates to the technical field of electronic paper display, in particular to a hierarchical structure of an electronic paper touch screen.

Background

Along with the development of science and technology, the electronic paper is widely popularized, and is widely used in places such as price labels, education flat plates and bus stop boards because the electronic paper has the advantages of ultra-low power consumption, low frequency display, electricity saving and the like.

The hierarchical structure of the traditional electronic paper layer touch screen is shown in the attached figure 1, and the hierarchical structure is as follows from bottom to top: EPD layer (electronic paper display screen layer), OCA layer (optically clear adhesive layer), LGP layer (light guide plate layer), OCA layer and CTP layer (capacitive touch screen layer), wherein, the EPD layer is from bottom to top in proper order: the touch panel comprises a TFT layer (thin film transistor layer), an FPL layer (electronic paper layer) and a thin film transistor layer (polystyrene protective film layer), wherein the CTP layer consists of a layer of protective glass and a sensor functional sheet positioned below the protective glass, and the sensor functional sheet is used for sensing touch of a user; the hierarchical structure of the electronic paper screen is shown in fig. 2, and the electronic paper screen sequentially comprises an EPD layer, an OCA layer and a CTP layer from bottom to top, wherein the hierarchical structures of the EPD layer and the CTP layer are the same as the above.

The above hierarchical structure of the electronic paper layer touch screen can lead to thicker electronic paper screen, and along with the development of market, the requirements of consumers for thinness of electronic paper are higher and higher, and a new hierarchical structure of the electronic paper touch screen is needed to cope with the requirements of consumers for thinness of products.

Disclosure of Invention

The utility model solves the problems that: the hierarchical structure of the electronic paper touch screen is provided, and the electronic paper screen is lighter and thinner on the basis of not changing the touch function of the original electronic paper touch screen.

In order to solve the above problems, the present utility model provides a hierarchical structure of an electronic paper touch screen, which sequentially comprises, from bottom to top: the electronic paper display screen layer comprises a thin film transistor layer, an electronic paper layer and a polystyrene protective film layer which are sequentially arranged from bottom to top; an optically clear adhesive layer; the touch layer comprises a light guide plate or an anti-dazzle film; the touch circuit is arranged on the upper surface of the polystyrene protective film layer, the touch circuit senses the touch of a user in a capacitance sensing mode, and the touch circuit is electrically connected with the FPC of the electronic paper and is adhered to the touch layer through the optical transparent adhesive layer.

The touch screen has the beneficial effects that the capacitive touch screen layer and the optical transparent adhesive layer connected with the capacitive touch screen layer are removed, the touch circuit in the capacitive touch screen layer is made to be the upper surface of the polystyrene protective film layer, the thickness of protective glass in the capacitive touch screen layer can be saved while the touch function is maintained, and the electronic paper is thinned.

Further, a silver circuit groove is printed on the upper surface of the polystyrene protective film layer, and the touch circuit is arranged in the silver circuit groove. The touch device has the beneficial effects that the touch function can be effectively realized due to the excellent conductivity of silver.

Further, the lower surface of the polystyrene protective film layer is coated with a waterproof layer. The waterproof layer has the beneficial effects that the waterproof effect is achieved on the basis of a touch function, and the waterproof layer is mainly formed by waterproof paint, so that the thickness can be almost ignored.

Further, the upper surface of the touch layer is coated with an oleophobic layer. The touch layer is directly touched by a user due to the hierarchical structure, so that an oleophobic layer can be coated on the upper surface of the touch layer, and the touch of the user is effectively applied; and the oleophobic layer is formed by coating one layer of oleophobic layer, and the thickness can be almost ignored.

Drawings

Fig. 1 is a schematic diagram of a hierarchical structure of a conventional electronic paper layer touch screen;

fig. 2 is a schematic diagram of a hierarchical structure of another conventional electronic paper layer touch screen;

FIG. 3 is a schematic diagram of a hierarchical structure in the present utility model;

FIG. 4 is a detailed schematic diagram of a hierarchical structure in the present utility model;

FIG. 5 is a detailed schematic diagram of a hierarchical structure of a preferred embodiment of the present utility model;

reference numerals illustrate: 100-electronic paper display screen layer, 101-thin film transistor layer, 102-electronic paper layer, 103-polystyrene protective film layer, 200-optical transparent adhesive layer, 300-touch layer, 400-touch circuit, 500-waterproof layer and 600-oleophobic layer.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are based on the orientation or positional relationship shown in the drawings, which are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the terms described above should not be construed as limiting the present utility model.

The utility model provides a hierarchical structure of an electronic paper touch screen, which sequentially comprises the following steps:

the electronic paper display screen layer 100, wherein the electronic paper display screen layer 100 comprises a thin film transistor layer 101, an electronic paper layer 102 and a polystyrene protective film layer 103 which are sequentially arranged from bottom to top; an optically clear adhesive layer 200; a touch layer 300, the touch layer 300 including a light guide plate or an antiglare film; the upper surface of the polystyrene protective film layer 103 is provided with a touch circuit 400, the touch circuit 400 senses a user touch in a capacitive sensing manner, and the touch circuit 400 is electrically connected with the FPC of the electronic paper and is adhered to the touch layer 300 through the optical transparent adhesive layer 200.

Specifically, the polystyrene protective film layer 103 and the optically transparent adhesive layer 200 may be attached by a laminator roll to roll. Forming a touch line 400 on the polystyrene protective film layer 103 by an etcher; since the touch layer 300 is used to protect the underlying touch line 400 and to be touched by a user's finger, the touch layer 300 may be composed of one light guide plate or may be assembled of one antiglare film.

Preferably, the antiglare film adopts AG antiglare protective film, and AG antiglare protective film has the following characteristics: high wear resistance, high scratch resistance after hardening treatment; the light transmittance is 5 to 8 percent higher than that of a common frosted film; the touch screen is high in sensitivity, thinner than a common frosted film, and sensitive in touch, and the touch screen effect is not affected; fingerprints, dust, greasy dirt and the like are not easy to leave, and the cleaning is easy; the strong glare is effectively eliminated, and the outdoor use suitability of the equipment is improved; special optical characteristics, and the penetration of ultraviolet rays and infrared rays is stopped; the silica gel is adsorbed, has no residual glue, is durable, is easy to paste and tear, can be washed with water and can be repeatedly used.

In a preferred embodiment of the present utility model, a silver wire groove is printed on the upper surface of the polystyrene protective film layer 103, and the touch wire 400 is disposed in the silver wire groove.

Specifically, the touch circuit 400 is completed by processing the upper surface of the polystyrene protective film layer 103 by an etching machine, first, the polystyrene protective film layer 103 is placed on the etching machine, a silver circuit groove is opened on the upper surface of the polystyrene protective film layer 103 by the etching machine, and the touch circuit 400 is formed in the silver circuit groove. The touch line 400 is electrically connected to the FPC of the electronic paper to form a circuit. The excellent electrical conductivity of silver can be effective for touch.

In the preferred embodiment of the present utility model, the lower surface of the polystyrene protective film 103 is coated with a waterproof layer 500. When in bonding, the waterproof layer 500 needs to be bonded with the electronic paper layer 102, so that the electronic paper layer can be waterproof on the basis of keeping a touch function, and the waterproof layer is mainly formed by waterproof paint, so that the thickness can be almost ignored.

In a preferred embodiment of the present utility model, the upper surface of the touch layer 300 is coated with an oleophobic layer 600. Human body is because normal metabolism, and the finger often has grease and sweat, can leave the finger trace through the contact screen, influences the cleanliness of screen, also influences the pleasing to the eye degree of screen, and oleophobic coating is more smooth because of the material specificity, and the finger touch does not have to hinder the unsmooth phenomenon of operation, improves the sense of touch and experiences.

In the preferred embodiment of the present utility model, since the touch layer 300 may be composed of either one light guide plate or one antiglare film, when the touch layer 300 is an antiglare film, the oleophobic layer 600 may be coated on the upper surface of the antiglare film; when the touch layer 300 is a light guide plate, an oleophobic layer 600 may be coated on the upper surface of the light guide plate; the oleophobic layer is formed by coating one layer of oleophobic layer, and the thickness is completely negligible.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims

1. The hierarchy of electronic paper touch screen, its characterized in that, hierarchy is from down supreme in proper order:

the electronic paper display screen layer (100), wherein the electronic paper display screen layer (100) comprises a thin film transistor layer (101), an electronic paper layer (102) and a polystyrene protective film layer (103) which are sequentially arranged from bottom to top;

an optically clear adhesive layer (200);

a touch layer (300), the touch layer (300) comprising a light guide plate or an antiglare film;

the touch circuit (400) is arranged on the upper surface of the polystyrene protective film layer (103), the touch circuit (400) senses the touch of a user in a capacitance sensing mode, and the touch circuit (400) is electrically connected with the FPC of the electronic paper and is adhered to the touch layer (300) through the optical transparent adhesive layer (200).

2. The hierarchical structure of an electronic paper touch screen according to claim 1, wherein a silver line groove is printed on an upper surface of the polystyrene protective film layer (103), and the touch line (400) is disposed in the silver line groove.

3. The hierarchical structure of an electronic paper touch screen according to claim 1 or 2, characterized in that the lower surface of the polystyrene protective film layer (103) is coated with a waterproof layer (500).

4. A hierarchical structure of an electronic paper touch screen according to claim 3, characterized in that the upper surface of the touch layer (300) is coated with an oleophobic layer (600).