CN216562389U

CN216562389U - Backlight type touch digital screen

Info

Publication number: CN216562389U
Application number: CN202123179009.8U
Authority: CN
Inventors: 肖洁谊
Original assignee: Zhongshan Youyang Optoelectronic Technology Co ltd
Current assignee: Zhongshan Youyang Optoelectronic Technology Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-17
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a backlight touch digital screen, which comprises a shell, wherein a containing groove is arranged in the shell; the touch PCB is arranged in the accommodating groove, and a touch pad electrically connected with the touch PCB is arranged on one side of the touch PCB, which is back to the shell; the LED lamp beads are arranged on the touch control PCB or arranged on the side wall of the accommodating groove and electrically connected with the touch control PCB; the light guide plate is arranged in the accommodating groove and positioned above the touch PCB, and light emitted by the LED lamp beads can irradiate the light guide plate from the side wall of the light guide plate; the diffusion film is arranged on the shell and can seal the containing groove; through the structure, the touch digital screen is more compact in structure, epoxy resin is not needed for encapsulation, material cost is reduced, meanwhile, the production period is shortened, energy consumption is reduced, the production process is simplified, the production efficiency is improved, and the touch digital screen has good practicability.

Description

Backlight type touch digital screen

Technical Field

The utility model relates to the field of digital screens, in particular to a backlight type touch digital screen.

Background

The existing touch digital screen generally adopts a touch spring to realize touch display, but the touch digital screen can be completed only after epoxy resin encapsulation and curing processes, so that the touch digital screen has the defects of high material cost, long production period, incompact structure, complex production and assembly processes and the like, and therefore, a backlight type touch digital screen is urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a backlight type touch digital screen.

The technical scheme adopted by the embodiment of the utility model for solving the technical problem is as follows: a backlit touch digital screen, comprising:

a housing, in which a containing groove is arranged;

the touch PCB is arranged in the accommodating groove, and a touch pad electrically connected with the touch PCB is arranged on one side of the touch PCB, which is back to the shell;

the LED lamp beads are arranged on the touch control PCB or arranged on the side wall of the accommodating groove and electrically connected with the touch control PCB;

the light guide plate is arranged in the accommodating groove and positioned above the touch PCB, and light emitted by the LED lamp beads can irradiate the light guide plate from the side wall of the light guide plate;

and the diffusion film is arranged on the shell and can seal the containing groove.

Furthermore, a plurality of light inlet grooves are formed in the side wall of the light guide plate in a concave mode, and the LED lamp beads can stretch into the light inlet grooves.

Further, the light guide plate is provided as an acrylic plate.

Furthermore, a plurality of reflection mesh points are arranged on the light guide plate, so that light emitted by the LED lamp beads can be uniformly reflected to the diffusion film.

And furthermore, white photosensitive ink is arranged on one side, close to the light guide plate, of the touch PCB and used for reflecting light emitted by the LED lamp beads back to the light guide plate.

Furthermore, the bottom of the shell is provided with a wiring groove communicated with the accommodating groove, and a wire on the PCB penetrates through the wiring groove and extends out of the wiring groove.

The utility model has the beneficial effects that: a backlight type touch digital screen comprises a shell, wherein a containing groove is arranged in the shell; the touch PCB is arranged in the accommodating groove, and a touch pad electrically connected with the touch PCB is arranged on one side of the touch PCB, which is back to the shell; the LED lamp beads are arranged on the touch control PCB or arranged on the side wall of the accommodating groove and electrically connected with the touch control PCB; the light guide plate is arranged in the accommodating groove and positioned above the touch PCB, and light emitted by the LED lamp beads can irradiate the light guide plate from the side wall of the light guide plate; the diffusion film is arranged on the shell and can seal the containing groove; through the structure, the touch digital screen is more compact in structure, epoxy resin is not needed for encapsulation, material cost is reduced, meanwhile, the production period is shortened, energy consumption is reduced, the production process is simplified, the production efficiency is improved, and the touch digital screen has good practicability.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a backlight type touch digital screen;

FIG. 2 is a schematic structural diagram of a touch PCB;

FIG. 3 is a schematic view of a light guide plate;

fig. 4 is a schematic structural view of the diffusion membrane.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, the meaning of a plurality is two or more, and greater than, less than, more than, etc. are understood as excluding the number, and greater than, less than, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either internal to the two elements or in an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Referring to fig. 1 to 4, a backlight type touch digital screen includes:

a housing 10 having a receiving groove formed therein;

a touch PCB 20 disposed in the receiving groove, and a touch pad 21 electrically connected to the touch PCB 20 is disposed on a side of the touch PCB facing away from the housing 10;

the LED lamp beads 30 are arranged on the touch PCB 20 or arranged on the side wall of the accommodating groove and electrically connected with the touch PCB 20;

the light guide plate 40 is arranged in the accommodating groove and is positioned above the touch PCB 20, and light emitted by the LED lamp beads 30 can irradiate the light guide plate 40 from the side wall of the light guide plate 40;

and a diffusion film 50 disposed on the housing 10 and closing the receiving groove.

In the utility model, during assembly, the touch control PCB 20 with the touch pad 21 is firstly placed in the accommodating groove of the shell 10, specifically, one side of the PCB 20, which is back to the touch pad 21, is placed downwards, a wire harness extending from the touch control PCB 20 passes through the wiring groove and can be connected with external equipment, then the light guide plate 40 is placed in the accommodating groove and positioned above the touch control PCB 20, finally the diffusion film 50 is attached to the shell 10 and closes the accommodating groove, and the light guide plate 40 is used for receiving light emitted by the LED lamp beads 30 and illuminating the diffusion film 50; furthermore, by arranging the light guide plate 40 and enabling the light emitted by the LED lamp beads 30 to irradiate the light guide plate 40 from the side wall of the light guide plate 40, the number of the LED lamp beads 30 can be saved; when the touch control circuit board is used, a finger of a person clicks the diffusion film 50 or hangs over the diffusion film 50, so that the electromotive force on the touch pad 21 can be changed, and a signal is fed back to the touch control PCB 20, so that a touch control signal is generated; the utility model has the advantages that: through the structure, the touch digital screen is more compact in structure, the industrial design and the structural assembly of the whole machine are facilitated, epoxy resin is not needed for encapsulation, the material cost is reduced, the production period is shortened, the energy consumption is reduced, the production process is simplified, the production efficiency is improved, and the touch digital screen has very good practicability.

The side wall of the light guide plate 40 is provided with a plurality of light inlet grooves 41 in a concave manner, and the LED lamp beads 30 can extend into the light inlet grooves 41.

The light guide plate 40 is provided as an acrylic plate; preferably, the light guide plate 40 is configured as a high-transmittance, ultra-thin acrylic plate, which can have a very good light guiding effect.

The light guide plate 40 is provided with a plurality of reflection dots which can uniformly reflect the light emitted by the LED lamp beads 30 to the diffusion film 50; the reflection screen dots are formed in a laser engraving mode, so that the light emitting area is more uniform, and the brightness is higher.

White photosensitive ink is arranged on one side, close to the light guide plate 40, of the touch PCB 20 and used for reflecting light emitted by the LED lamp beads 30 back to the light guide plate 40; and corrosion protection of the touch pad 21.

The bottom of the shell 10 is provided with a wiring groove communicated with the accommodating groove, and a lead on the PCB board penetrates through the wiring groove and extends out of the wiring groove.

It is to be understood that the present invention is not limited to the above-described embodiments, and that equivalent modifications and substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and that such equivalent modifications and substitutions are to be included within the scope of the appended claims.

Claims

1. A backlit touch digital screen, comprising:

a housing (10) in which a receiving groove is provided;

the touch control PCB board (20) is arranged in the accommodating groove, and a touch pad (21) electrically connected with the touch control PCB board (20) is arranged on one side of the touch control PCB board, which is back to the shell (10);

the LED lamp beads (30) are arranged on the touch PCB (20) or arranged on the side wall of the accommodating groove and are electrically connected with the touch PCB (20);

the light guide plate (40) is arranged in the accommodating groove and located above the touch PCB (20), and light emitted by the LED lamp beads (30) can irradiate the light guide plate (40) from the side wall of the light guide plate (40);

a diffusion film (50) disposed on the housing (10) and capable of closing the receiving groove.

2. The backlight-type touch digital screen according to claim 1, wherein: the LED light guide plate is characterized in that a plurality of light inlet grooves (41) are formed in the side wall of the light guide plate (40) in a concave mode, and the LED lamp beads (30) can extend into the light inlet grooves (41).

3. The backlight-type touch digital screen according to claim 1, wherein: the light guide plate (40) is configured as an acrylic plate.

4. The backlight-type touch digital screen according to claim 1, wherein: the light guide plate (40) is provided with a plurality of reflection dots, and light emitted by the LED lamp beads (30) can be uniformly reflected to the diffusion film (50).

5. The backlight-type touch digital screen according to claim 1, wherein: and white photosensitive ink is arranged on one side, close to the light guide plate (40), of the touch PCB (20) and used for reflecting light emitted by the LED lamp beads (30) back to the light guide plate (40).

6. The backlight-type touch digital screen according to claim 1, wherein: the bottom of the shell (10) is provided with a wiring groove communicated with the containing groove, and a wire on the PCB penetrates through the wiring groove and extends out of the wiring groove.