CN214043498U

CN214043498U - LGF light guide sheet-based backlight film switch

Info

Publication number: CN214043498U
Application number: CN202120342711.2U
Authority: CN
Inventors: 安丰磊
Original assignee: Qingdao Shan Yuan Electronics Co ltd
Current assignee: Qingdao Shanyuan Precision Electronic Technology Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-08-24
Anticipated expiration: 2031-02-05

Abstract

The utility model discloses a backlight film switch based on LGF light guide sheet, which comprises a surface film layer and a back glue layer, wherein an LGF light guide sheet and an LED sidelight are arranged between the surface film layer and the back glue layer, and the LED sidelight is positioned on the side surface of the LGF light guide sheet; the LGF light guide plate is provided with pattern areas at intervals, the pattern areas are composed of a plurality of holes which are arranged in an indefinite shape, each hole is divided into an upper half part and a lower half part, the upper half part is in a reverse trapezoid shape, the lower half part and the upper half part are in an axial symmetry shape of a regular trapezoid shape, and the upper half part and the lower half part are communicated with each other. Compared with the prior art, the utility model has better light diffusion effect, so that the light of the LED sidelight can be transmitted farther, thereby realizing that the whole membrane switch emits backlight with clear light and shade, and the light on the upper part of the hole is gathered, thereby realizing local bright spots; in addition, the interlayer and the black glue layer in the membrane switch have the function of blocking light from being transmitted in the membrane switch, so that internal light crosstalk is prevented.

Description

LGF light guide sheet-based backlight film switch

Technical Field

The utility model relates to a membrane switch especially relates to a membrane switch is shaded based on LGF leaded light piece.

Background

The current technical scheme of the film switch control panel is two: 1. the LED lamp is arranged on the circuit layer, and after the circuit layer is electrified, the LED lamp is lightened, so that light can be emitted in a small range. 2. The light-storing ink is printed on the luminous part of the mask material, and the light-storing ink can emit light in a dark environment after absorbing light. However, both of the above solutions have disadvantages. Firstly, the LED lamp is arranged on a circuit layer, the LED lamp is directly used for emitting light, a light-emitting point can only illuminate a very small range, the center is lightened, the periphery is dark, the backlight effect is poor, and uniform light emission cannot be realized; secondly, the use of the light-storing ink must rely on absorbing enough light energy firstly to emit light in dark environment, and the light-emitting effect is attenuated along with time, so that the backlight is unstable, and the light-storing ink has great limitation.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a backlight film switch based on LGF light guide sheet.

In order to solve the technical problem, the technical scheme adopted by the utility model is a backlight film switch based on an LGF light guide sheet, which comprises a surface film layer and a back glue layer, wherein the LGF light guide sheet and an LED sidelight are arranged between the surface film layer and the back glue layer, and the LED sidelight is positioned on the side surface of the LGF light guide sheet;

the LGF light guide plate is characterized in that pattern areas are arranged on the LGF light guide plate at intervals and consist of a plurality of holes which are arranged in an indefinite shape, each hole is divided into an upper half part and a lower half part, the upper half part is in an inverted trapezoid shape, the lower half part and the upper half part are in an axisymmetric regular trapezoid shape, the upper half part and the lower half part are communicated with each other, and the upper half part protrudes out of the surface of the LGF light guide plate.

Further, still be provided with the circuit layer between facial mask layer and the gum layer, the circuit layer is located the below of LGF leaded light piece, is provided with the shell fragment on the circuit layer that the pattern region corresponds to LED sidelight also is connected on the circuit layer.

Furthermore, a key is arranged on the surface film layer corresponding to the elastic sheet.

Furthermore, an LED transparent window is arranged on the surface film layer corresponding to the LED sidelight.

Furthermore, an interlayer is arranged between the LGF light guide sheet and the circuit layer.

Furthermore, the upper surface of the interlayer is provided with an upper black glue layer, and the lower surface of the interlayer is provided with a lower black glue layer.

Furthermore, the upper surface of the upper black glue layer is provided with a fixed layer, the upper black glue layer, the interlayer, the lower black glue layer and the fixed layer are all provided with a spring piece hole corresponding to the spring piece, the diameter of the spring piece hole of the fixed layer is smaller than that of the spring piece holes of other layers, and the diameter of the spring piece hole of the fixed layer is smaller than that of the spring piece.

Compared with the prior art, the utility model has better light diffusion effect, so that the light of the LED sidelight can be transmitted farther, thereby realizing that the whole membrane switch emits backlight with clear light and shade, and the light on the upper part of the hole is gathered, thereby realizing local bright spots; in addition, the interlayer and the black glue layer in the membrane switch have the function of blocking light from being transmitted in the membrane switch, so that internal light crosstalk is prevented.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of a hole structure of a LGF light guide plate pattern area.

In the figure: 1. a mask layer; 2. an LGF light guide sheet; 21. a pattern area; 211. an aperture; 3. a fixed layer; 4. applying a black glue layer; 5. an interlayer; 6. a black glue layer is arranged; 7. a circuit layer; 8. a back glue layer; 9. LED sidelight; 10. pressing a key; 11. an elastic sheet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 shows a film switch in a poor light based on LGF leaded light piece, including facial mask layer 1 and gum layer 8, is provided with LGF leaded light piece 2 and LED sidelight 9 between facial mask layer and the gum layer, and the facial mask layer bonds with the LGF leaded light piece together after the bubble blowing, and the LED sidelight is located the side of LGF leaded light piece, makes the light of LED sidelight shine on the LGF leaded light piece, makes film switch send out and is shaded.

Still be provided with circuit layer 7 between facial mask layer and the gum layer, the circuit layer is located the below of LGF leaded light piece, is provided with shell fragment 11 on the circuit layer that the pattern region corresponds to LED sidelight also is connected on the circuit layer, still is provided with interlayer 5 between LGF leaded light piece and the circuit layer.

The upper surface of the interlayer is provided with an upper black glue layer 4, and the lower surface is provided with a lower black glue layer 6. The black glue film is completely opaque, and the upper surface of going up the black glue film is provided with fixed layer 3, and with fixed layer, go up black glue film, interlayer, black glue film, circuit layer and gum layer down bond together from last in proper order, can prevent membrane switch's inside string light.

Go up all corresponding the shell fragment on black glue film, interlayer, lower black glue film and the fixed layer and seted up the shell fragment hole, the shell fragment hole diameter of fixed layer is less than the shell fragment hole diameter on other layers, and the shell fragment hole diameter of fixed layer is less than the diameter of shell fragment, makes the fixed layer can fix the shell fragment on the circuit layer.

The surface film layer corresponding to the spring plate is provided with a key 10. The LED transparent window is arranged on the mask layer corresponding to the LED sidelight, so that the light of the LED sidelight can be emitted from the mask layer.

The LGF light guide plate is provided with pattern areas 21 at intervals, each pattern area is composed of a plurality of holes 211 which are arranged in an indefinite shape, as shown in figure 2, each hole is divided into an upper half part and a lower half part, the upper half part is in a reversed trapezoid shape, the lower half part and the upper half part are in a regular trapezoid shape in an axial symmetry manner, and the upper half part and the lower half part are communicated with each other, so that the holes are in a shape which is wide at the upper part and the lower part and narrow at the middle part, the light guide plate has a better diffusion effect on light, and the light can be transmitted farther on the light guide plate. First half protrusion in LGF leaded light piece surface, light has the effect of gathering together when upwards transmitting first half, can realize local bright point.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims

1. The utility model provides a film switch in a poor light based on LGF leaded light piece which characterized in that: the LED backlight module comprises a surface film layer (1) and a back glue layer (8), wherein an LGF light guide sheet (2) and an LED side light (9) are arranged between the surface film layer and the back glue layer, and the LED side light is positioned on the side face of the LGF light guide sheet;

the LGF light guide piece is provided with pattern area (21) at intervals, the pattern area comprises holes (211) that a plurality of indefinite shapes were arranged, and every hole is equallyd divide into first and lower half, and first is down trapezoidal, and the lower half is positive trapezoidal with first axial symmetry, and first and lower half communicate each other, first protrusion in LGF light guide piece surface.

2. The LGF light guide sheet-based backlight film switch of claim 1, wherein: still be provided with circuit layer (7) between facial mask layer and the gum layer, the circuit layer is located the below of LGF leaded light piece, is provided with shell fragment (11) on the circuit layer that the pattern region corresponds to LED sidelight also is connected on the circuit layer.

3. The LGF light guide sheet-based backlight film switch of claim 2, wherein: the surface film layer corresponding to the elastic sheet is provided with a key (10).

4. The LGF light guide sheet-based backlight film switch of claim 3, wherein: and the surface film layer corresponding to the LED sidelight is provided with an LED transparent window.

5. The LGF light guide sheet-based backlight film switch of claim 4, wherein: and an interlayer (5) is also arranged between the LGF light guide sheet and the circuit layer.

6. The LGF light guide sheet-based backlight film switch of claim 5, wherein: the upper surface of the interlayer is provided with an upper black glue layer (4), and the lower surface of the interlayer is provided with a lower black glue layer (6).

7. The LGF light guide sheet-based backlight film switch of claim 6, wherein: go up black glue film's upper surface and be provided with fixed layer (3), go up all corresponding the shell fragment on black glue film, interlayer, lower black glue film and the fixed layer and seted up the shell fragment hole, the shell fragment hole diameter of fixed layer is less than the shell fragment hole diameter on other layers, and the shell fragment hole diameter of fixed layer is less than the diameter of shell fragment.