CN213934848U

CN213934848U - Novel touch pad

Info

Publication number: CN213934848U
Application number: CN202120138788.8U
Authority: CN
Inventors: 林清; 许福生; 段俊杰
Original assignee: Jiangxi Holitech Technology Co Ltd
Current assignee: Jiangxi Holitech Technology Co Ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-08-10
Anticipated expiration: 2031-01-19

Abstract

The utility model provides a novel touch pad, including the circuit board, the circuit board includes circuit substrate, be equipped with first circuit layer on circuit substrate's the upper surface, be equipped with the first insulation layer on first circuit layer's the upper surface, the edge on first insulation layer is equipped with round under the layer of adding lustre to, be equipped with the second circuit layer on circuit substrate's the lower surface, the lower surface on second circuit layer is equipped with the second insulating layer, the upper surface of layer of adding lustre to down evenly is provided with the several light source along its circumference, the middle part of adding lustre to layer is provided with a light guide plate down, the light source groove that several and light source match is seted up at the edge of light guide plate, light source alignment embedding light source inslot, be equipped with display panel on the upper surface of light guide plate, a mounting hole has all been seted up to one side of display panel and light guide plate, install fingerprint module in the mounting hole, the lower surface electric connection of circuit board has electronic component, connector and light touch switch. The utility model discloses can adopt a light source to realize touch-control, fingerprint identification and show three kinds of functions simultaneously, reduce manufacturing cost.

Description

Novel touch pad

Technical Field

The utility model relates to a touch and show screen technical field, specifically be a novel touch pad.

Background

Along with the continuous development of the backlight screen, a touch screen often integrates display, fingerprint identification and touch control, display, fingerprint identification and touch control modules in the conventional backlight screen are often independent, and light sources required to be used are also independent, so that at least three independent light sources are required in one display screen, independent wiring and control are required, the requirements of the independent wiring and light sources on the arrangement space are higher, and the production cost of the backlight screen is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of existence among the prior art, providing a novel touch pad, the demonstration of the screen that is shaded that has solved among the prior art, fingerprint identification and touch module often are independent, and its light source, wiring and control also are independent, both need more arrange the space, have increased the manufacturing cost of the screen that is shaded again.

In order to realize the purpose, the utility model discloses a technical scheme be:

a novel touch pad comprises a circuit board, wherein the circuit board comprises a circuit substrate, a first circuit layer is arranged on the upper surface of the circuit substrate, a first insulating layer is arranged on the upper surface of the first circuit layer, a circle of lower light-adding layer is arranged at the edge of the first insulating layer, a second circuit layer is arranged on the lower surface of the circuit substrate, a second insulating layer is arranged on the lower surface of the second circuit layer, a plurality of light sources are uniformly arranged on the upper surface of the lower light-adding layer along the circumferential direction of the upper surface, a light guide plate is arranged in the middle of the lower light-adding layer, a plurality of light source grooves matched with the light sources are formed in the edge of the light guide plate, the light sources are embedded into the light source grooves in an aligned mode, a display panel is arranged on the upper surface of the light guide plate, a mounting hole is formed in each of one side of the display panel and one side of the light guide plate, and a fingerprint module is mounted in the mounting hole, the lower surface of the circuit board is electrically connected with an electronic element, a connector and a touch switch, and the light source and the fingerprint module are also electrically connected with the circuit board through a circuit.

Further, the panel comprises a panel substrate, a panel decoration layer, a light shielding layer and an upper light-adding layer from top to bottom in sequence, a pattern layer is arranged between the panel substrate and the light guide plate, the lower end face of the pattern layer is in contact with the light guide plate, the upper end face of the pattern layer is in contact with the panel substrate, the light-adding layer is arranged on one side of the pattern layer, and the light shielding layer completely covers the upper light-adding layer and the light guide plate.

Further, the fingerprint module includes fingerprint chip and fingerprint decorative layer, the fingerprint chip set up in on the upper surface of circuit board with circuit board electric connection, the fingerprint decorative layer set up in on the upper surface of fingerprint chip, the upper surface of fingerprint decorative layer with the up end of panel substrate flushes.

Furthermore, the fingerprint chip, the light source, the electronic element, the connector and the tact switch are all welded on the circuit board through tin soldering.

Further, the light source is an LED lamp.

Furthermore, the upper end surface of the panel substrate is frosted.

The utility model discloses simple structure, reasonable in design, the light source on the lower light intensifying layer can provide the light source for display module, fingerprint identification module and touch module simultaneously, has not only reduced the cost that sets up of light source, to the requirement of arranging the space when still having reduced the assembly of backlight screen, and the backlight screen that is can reach lighter thinner requirement.

Drawings

FIG. 1 is a schematic structural diagram of the device of the present invention;

fig. 2 is a schematic view of the installation structure of the lower light enhancement layer on the first insulating layer according to the present invention;

fig. 3 is a schematic view of the installation structure of the light source and the fingerprint module on the circuit board according to the present invention;

fig. 4 is a schematic view of the installation structure of the light guide plate on the circuit board according to the present invention;

fig. 5 is a schematic structural view of the light guide plate of the present invention;

FIG. 6 is a schematic view of the light source of the present invention;

in the figure: 1. the fingerprint sensor comprises a circuit board, 11, a circuit substrate, 12, a first circuit layer, 13, a first insulating layer, 14, a lower light enhancement layer, 15, a second circuit layer, 16, a second insulating layer, 2, a fingerprint module, 21, a fingerprint chip, 22, a fingerprint decoration layer, 3, a light source, 4, a light guide plate, 41, a mounting hole, 42, a light source groove, 5, a display panel, 51, a panel substrate, 52, a panel decoration layer, 53, a light shielding layer, 54, a pattern layer, 55, an upper light enhancement layer, 6, an electronic component, 7, a connector, 8 and a tact switch.

Detailed Description

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

The novel touch panel shown in fig. 1-6 includes a circuit board 1, where the circuit board 1 includes a circuit substrate 11, a first circuit layer 12 is disposed on an upper surface of the circuit substrate 11, a first insulating layer 13 is disposed on an upper surface of the first circuit layer 12, a circle of lower light-adding layer 14 is disposed at an edge of the first insulating layer 13, a second circuit layer 15 is disposed on a lower surface of the circuit substrate 11, a second insulating layer 16 is disposed on a lower surface of the second circuit layer 15, a plurality of light sources 3 are uniformly disposed on an upper surface of the lower light-adding layer 14 along a circumferential direction thereof, a light guide plate 4 is disposed at a middle portion of the lower light-adding layer 14, a plurality of light source grooves 42 matched with the light sources 3 are formed at an edge of the light guide plate 4, the light sources 3 are embedded in the light source grooves 42 in an aligned manner, a display panel 5 is disposed on an upper surface of the light guide plate 4, a mounting hole 41 is formed at each of the display panel 5 and one side of the light guide plate 4, the fingerprint module 2 is installed in the installation hole 41, the lower surface of the circuit board 1 is electrically connected with the electronic element 6, the connector 7 and the tact switch 8, and the light source 3 and the fingerprint module 2 are also electrically connected with the circuit board 1 through a circuit; the panel 5 comprises a panel substrate 51, a panel decoration layer 52, a light shielding layer 53 and an upper light-adding layer 55 from top to bottom in sequence, a pattern layer 54 is arranged between the panel substrate 51 and the light guide plate 4, the lower end face of the pattern layer 54 is in contact with the light guide plate 4, the upper end face of the pattern layer 54 is in contact with the panel substrate 51, the light-adding layer 55 is arranged on one side of the pattern layer 54, and the light shielding layer 53 completely covers the upper light-adding layer 55 and the light guide plate 4; the fingerprint module 2 comprises a fingerprint chip 21 and a fingerprint decoration layer 22, the fingerprint chip 21 is arranged on the upper surface of the circuit board 1 and electrically connected with the circuit board 1, the fingerprint decoration layer 22 is arranged on the upper surface of the fingerprint chip 21, and the upper surface of the fingerprint decoration layer 22 is flush with the upper end surface of the panel substrate 51; the fingerprint chip 21, the light source 3, the electronic element 6, the connector 7 and the tact switch 8 are all welded on the circuit board 1 through tin soldering; the light source 3 is an LED lamp; the upper end surface of the panel substrate 51 is frosted.

The utility model can be connected with the external power supply and the controller through the connector 7, the power supply of the light source 3 can be connected during the work, the light source 3 starts to emit light at the moment, and the light source irradiates the panel substrate 51 through the light guide plate 4 and the pattern layer 54 in sequence to realize the display; when the touch is required, an operator can touch the panel substrate 51 according to the indication of the display pattern on the panel substrate 51, and at this time, the capacitance on the first circuit layer 12 changes along with the touch on the panel substrate 51, so that the touch effect is achieved; meanwhile, because the fingerprint chip 21 is arranged in the mounting hole 41 on the light guide plate 4, the light guide plate 4 can conduct the light emitted by the power supply 3 to the fingerprint chip 21, so as to provide a light source for the fingerprint module 2, thereby achieving the fingerprint identification effect.

The utility model discloses simple structure, reasonable in design, the light source on the lower light intensifying layer 14 can provide the light source for display module, fingerprint identification module and touch module simultaneously, has not only reduced the cost that sets up of light source, to the requirement of arranging the space when still having reduced the assembly of backlight screen, and the backlight screen that is can reach lighter thinner requirement.

The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations may be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The novel touch pad comprises a circuit board (1) and is characterized in that the circuit board (1) comprises a circuit substrate (11), a first circuit layer (12) is arranged on the upper surface of the circuit substrate (11), a first insulating layer (13) is arranged on the upper surface of the first circuit layer (12), a circle of lower light-intensifying layer (14) is arranged at the edge of the first insulating layer (13), a second circuit layer (15) is arranged on the lower surface of the circuit substrate (11), a second insulating layer (16) is arranged on the lower surface of the second circuit layer (15), a plurality of light sources (3) are uniformly arranged on the upper surface of the lower light-intensifying layer (14) along the circumferential direction of the upper surface, a light guide plate (4) is arranged in the middle of the lower light-intensifying layer (14), and a plurality of light source grooves (42) matched with the light sources (3) are formed in the edge of the light guide plate (4), light source (3) align the embedding in light source groove (42), be equipped with display panel (5) on the upper surface of light guide plate (4), a mounting hole (41) have all been seted up to one side of display panel (5) and light guide plate (4), install fingerprint module (2) in mounting hole (41), the lower surface electric connection of circuit board (1) has electronic component (6), connector (7) and dabs switch (8), light source (3) and fingerprint module (2) also through the circuit with circuit board (1) electric connection.

2. The novel touch pad according to claim 1, wherein the panel (5) comprises, from top to bottom, a panel substrate (51), a panel decoration layer (52), a light shielding layer (53), and an upper light-adding layer (55), a pattern layer (54) is disposed between the panel substrate (51) and the light guide plate (4), a lower end surface of the pattern layer (54) is in contact with the light guide plate (4), an upper end surface of the pattern layer (54) is in contact with the panel substrate (51), the light-adding layer (55) is disposed on one side of the pattern layer (54), and the light shielding layer (53) completely covers the upper light-adding layer (55) and the light guide plate (4).

3. The novel touch pad according to claim 2, wherein the fingerprint module (2) comprises a fingerprint chip (21) and a fingerprint decoration layer (22), the fingerprint chip (21) is disposed on the upper surface of the circuit board (1) and electrically connected to the circuit board (1), the fingerprint decoration layer (22) is disposed on the upper surface of the fingerprint chip (21), and the upper surface of the fingerprint decoration layer (22) is flush with the upper end surface of the panel substrate (51).

4. A novel touch pad according to claim 3, wherein the fingerprint chip (21), the light source (3), the electronic component (6), the connector (7) and the tact switch (8) are soldered to the circuit board (1) by soldering.

5. A novel touch pad according to claim 4, characterized in that the light source (3) is an LED lamp.

6. A novel touch pad according to claim 5, wherein the upper end surface of the panel substrate (51) is frosted.