CN212749459U

CN212749459U - Dot matrix liquid crystal display screen with embedded capacitance touch control function

Info

Publication number: CN212749459U
Application number: CN202021364597.5U
Authority: CN
Inventors: 邓锦炫
Original assignee: Shenzhen Lanxun Technology Co ltd
Current assignee: Shenzhen Lanxun Technology Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-03-19
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses an embedding electric capacity touch function's dot matrix liquid crystal display, including capacitive touch screen and dot matrix liquid crystal display, capacitive touch screen and dot matrix liquid crystal display offset the setting, dot matrix liquid crystal display's lateral wall parcel has the frame, and the inner wall of frame offsets the setting with capacitive touch screen, the hole of stepping down has been seted up to one side of frame, and the lateral wall of frame can be dismantled and be connected with spacing subassembly. The utility model relates to a dot matrix liquid crystal display technical field, through setting up the spacing subassembly of frame cooperation, can utilize frame and spacing subassembly to fix capacitive touch screen, need not to use sticky mode to make capacitive touch screen and dot matrix liquid crystal display laminate mutually, the user of being convenient for maintains and changes capacitive touch screen, through setting up the bent angle, can leave certain surplus for spacing frame, is convenient for dismantle spacing frame.

Description

Dot matrix liquid crystal display screen with embedded capacitance touch control function

Technical Field

The utility model relates to a dot matrix liquid crystal display technical field especially relates to a dot matrix liquid crystal display of embedding electric capacity touch-control function.

Background

The lattice LCD screen is one display screen comprising display points arranged in certain rule, and each display point has one bit of binary number, 1 for on and 0 for off. The RAM storing such dot matrix information is called a display data memory. To display a certain graphic or Chinese character, the corresponding dot matrix information is written into the corresponding memory cell. The dot matrix information of the graph or the Chinese character is designed by self, the key of the problem is the relation between the position of a display point on the liquid crystal screen and the address of the display point in the memory, and the capacitive touch screen technology works by utilizing the 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.

In prior art, the dot matrix liquid crystal display of electric capacity touch-control function adopts usually to glue capacitive touch screen at the upper surface of dot matrix liquid crystal display, and capacitive touch screen in the use, because of colliding with the damage easily, perhaps the fish tail leads to the definition to descend, need change it, and the capacitive touch screen gluing and the dot matrix liquid crystal display of gluing combination are difficult to part, lead to the replacement cost to increase, can't satisfy people's demand, for this, we propose a dot matrix liquid crystal display of embedding electric capacity touch-control function and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that exists among the prior art, and the dot matrix liquid crystal display who inserts electric capacity touch function who provides.

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

a dot matrix liquid crystal display screen with an embedded capacitance touch function comprises a capacitive touch screen and a dot matrix liquid crystal display screen, wherein the capacitive touch screen is abutted to the dot matrix liquid crystal display screen;

the limiting assembly comprises a limiting plate and a limiting frame, the limiting frame is fixedly connected with the limiting plate, the limiting plate is square, a plurality of wedge-shaped clamping blocks are fixedly connected to the inner wall of the limiting frame, a plurality of limiting grooves matched with the wedge-shaped clamping blocks are formed in the side wall of the frame, and four corners of the limiting frame are provided with bent angles.

Preferably, the limiting frame and the wedge-shaped clamping block are made of plastic materials, and the bent angle is an arc-shaped bent angle.

Preferably, one side of the limiting plate close to the capacitive touch screen is fixedly connected with a silica gel pad, and the silica gel pad is abutted to the capacitive touch screen.

Preferably, the limiting groove and the wedge-shaped clamping block are respectively arranged close to the middle positions of the four edges of the frame and the limiting frame.

Preferably, a plurality of exhaust holes are opened in the lateral wall of frame, and the exhaust hole is embedded to be equipped with soft cushion.

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

1. the utility model discloses in, through setting up frame cooperation spacing subassembly, can utilize frame and spacing subassembly to fix capacitive touch screen, need not to use the mode of gluing to make capacitive touch screen and dot matrix liquid crystal display laminate mutually, the user of being convenient for maintains and changes capacitive touch screen, through setting up the bent angle, can leave certain surplus for spacing frame, is convenient for dismantle spacing frame;

2. the utility model discloses in, through setting up the silica gel pad, can improve the spacing effect of limiting plate to capacitive touch screen to because silica gel pad offsets with capacitive touch screen, can avoid capacitive touch screen to be stained with the back of water, water is permeated to dot matrix liquid crystal display by the clearance of capacitive touch screen and limiting plate.

Drawings

Fig. 1 is a schematic diagram of a cross-sectional structure of a dot matrix liquid crystal display screen with an embedded capacitive touch function according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is the utility model provides an embedding electric capacity touch function's dot matrix liquid crystal display's spacing frame structure sketch map.

In the figure: 1. a capacitive touch screen; 2. a dot matrix liquid crystal display screen; 3. a frame; 4. a hole of abdication; 5. a limiting plate; 6. a limiting frame; 7. a wedge-shaped fixture block; 8. a limiting groove; 9. bending the corner; 10. a silica gel pad; 11. an exhaust hole; 12. a soft rubber cushion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a dot matrix liquid crystal display screen with an embedded capacitive touch function comprises a capacitive touch screen 1 and a dot matrix liquid crystal display screen 2, wherein the capacitive touch screen 1 is abutted to the dot matrix liquid crystal display screen 2, a side wall of the dot matrix liquid crystal display screen 2 is wrapped with a frame 3, the capacitive touch screen 1 and the dot matrix liquid crystal display screen 2 can be protected by arranging the frame 3, and meanwhile, the capacitive touch screen 1 and the dot matrix liquid crystal display screen 2 are fixed by being conveniently matched with a limit frame 6, the inner wall of the frame 3 is abutted to the capacitive touch screen 1, one side of the frame 3 is provided with a yielding hole 4, the yielding hole 4 is used for yielding a circuit of the capacitive touch screen 1, and the side wall of the frame 3 is detachably connected with a limit component;

spacing subassembly includes limiting plate 5 and spacing frame 6, spacing frame 6 and 5 fixed connection of limiting plate, limiting plate 5 is the square, a plurality of wedge fixture blocks 7 of the inner wall fixedly connected with of spacing frame 6, a plurality of spacing grooves 8 that match with wedge fixture block 7 are all seted up to the lateral wall of frame 3, through setting up wedge fixture block 7 cooperation spacing groove 8, can fix spacing frame 6 to the realization can realize right to wedge fixture block 7 the four corners of spacing frame 6 is equipped with bent angle 9, through setting up bent angle 9, can make spacing frame 6 have certain surplus, when dismantling spacing frame 6, extrusion bent angle 9 can make 6 elastic deformation of spacing frame, drives wedge fixture block 7 and breaks away from spacing groove 8.

Spacing frame 6 and wedge fixture block 7 are the plastics material, bent angle 9 is the arc dog-ear, and the arc dog-ear when having the surplus can make spacing frame 6 and frame 3 have the clearance in four corners department, can protect in the four corners of dot matrix liquid crystal display 2.

One side of the limiting plate 5 close to the capacitive touch screen 1 is fixedly connected with a silica gel pad 10, the silica gel pad 10 is abutted to the capacitive touch screen 1, the limiting effect of the limiting plate 5 on the capacitive touch screen 1 can be improved by arranging the silica gel pad 10, and water is prevented from permeating from a gap between the capacitive touch screen 1 and the limiting plate 5 to the dot matrix liquid crystal display screen 2 after the capacitive touch screen 1 is stained with water due to the fact that the silica gel pad 10 is abutted to the capacitive touch screen 1.

The limiting groove 8 and the wedge-shaped fixture block 7 are respectively arranged close to the middle positions of the four edges of the frame 3 and the limiting frame 6.

A plurality of exhaust holes 11 have been seted up to the lateral wall of frame 3, and exhaust hole 11 is embedded to be equipped with soft cushion 12, through setting up exhaust hole 11, can be when installing capacitive touch screen 1, conveniently discharge air between capacitive touch screen 1 and the dot matrix liquid crystal display 2, avoid appearing the bubble and lead to the aesthetic property variation of screen, through setting up soft cushion 12, can realize the effect of a check valve, carry out shutoff to a certain extent to exhaust hole 11, avoid external water by exhaust hole 11 infiltration screen in.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The dot matrix liquid crystal display screen with the embedded capacitance touch function comprises a capacitive touch screen (1) and a dot matrix liquid crystal display screen (2), wherein the capacitive touch screen (1) and the dot matrix liquid crystal display screen (2) are arranged in a propping manner, and is characterized in that the side wall of the dot matrix liquid crystal display screen (2) is wrapped with a frame (3), the inner wall of the frame (3) is arranged in a propping manner with the capacitive touch screen (1), one side of the frame (3) is provided with a abdicating hole (4), and the side wall of the frame (3) is detachably connected with a limiting component;

the limiting assembly comprises a limiting plate (5) and a limiting frame (6), the limiting frame (6) is fixedly connected with the limiting plate (5), the limiting plate (5) is square-shaped, a plurality of wedge-shaped clamping blocks (7) are fixedly connected with the inner wall of the limiting frame (6), a plurality of limiting grooves (8) matched with the wedge-shaped clamping blocks (7) are formed in the side wall of the frame (3), and the four corners of the limiting frame (6) are provided with bent angles (9).

2. The dot matrix liquid crystal display screen with the embedded capacitive touch function according to claim 1, wherein the limiting frame (6) and the wedge-shaped fixture block (7) are made of plastic, and the bending angle (9) is an arc-shaped bending angle.

3. The dot matrix liquid crystal display screen with the embedded capacitive touch function according to claim 1, wherein a silica gel pad (10) is fixedly connected to one side of the limiting plate (5) close to the capacitive touch screen (1), and the silica gel pad (10) is abutted to the capacitive touch screen (1).

4. The dot matrix liquid crystal display screen with the embedded capacitive touch function according to claim 1, wherein the limiting groove (8) and the wedge-shaped fixture block (7) are respectively arranged near the middle positions of the four sides of the frame (3) and the limiting frame (6).

5. The dot matrix liquid crystal display screen with the embedded capacitive touch function according to claim 1, wherein the side wall of the frame (3) is provided with a plurality of exhaust holes (11), and soft rubber pads (12) are embedded in the exhaust holes (11).