CN217955002U - Computer touch pad and notebook computer - Google Patents
Computer touch pad and notebook computer Download PDFInfo
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- CN217955002U CN217955002U CN202221733791.5U CN202221733791U CN217955002U CN 217955002 U CN217955002 U CN 217955002U CN 202221733791 U CN202221733791 U CN 202221733791U CN 217955002 U CN217955002 U CN 217955002U
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Abstract
The utility model provides a computer touch pad and a notebook computer, which comprises a glass substrate, an IC chip and a PCB main control board; the glass substrate is provided with a fingerprint sensing area and a touch sensing area, a plurality of pixel points are distributed in the fingerprint sensing area, and a plurality of touch points are distributed in the touch sensing area; the IC chip is attached to the position, close to the fingerprint sensing area, of the glass substrate, the IC chip is connected with each pixel point through an Rx and a Tx printed on the surface of the glass substrate, and the IC chip is connected with each touch point through at least one Rx printed on the surface of the glass substrate; the PCB main control board is attached to the glass substrate and is provided with a first connector in communication connection with the IC chip, and a second connector and a third connector in communication connection with the computer mainboard. The utility model provides a computer touch pad can reduce touch pad cost of manufacture, improves touch pad outward appearance effect and long-term use sensitivity.
Description
Technical Field
The utility model belongs to the technical field of computer input equipment, concretely relates to computer touch pad and notebook computer.
Background
The touch pad is an input device widely used in notebook computers, controls the movement of a screen pointer by sensing the movement of a user's finger, and can be regarded as a substitute for a mouse. The touchpad sensor is a finger track conductive line printed on the surface of the touchpad, and constantly measures and reports a touch track through a special circuit board integrated under the touchpad.
With the increasing popularization of notebook computers, more and more notebook computers are provided with fingerprint identification functions, not only can the privacy and safety of the computers be protected, but also quick unlocking and login can be realized without inputting passwords, at present, most of touch schemes and fingerprint identification schemes of the touch pads on the notebook computers are mutually independent, generally, the operation is convenient, a fingerprint identification area can be arranged on the side of a switch button, but the fingerprint identification functions additionally occupy a part of panel space of the computers, so certain influence can be brought to the layout of an operation panel of the computers, on the basis, the scheme of integrating the fingerprint identification functions on the touch pads is developed in the industry, the currently marketed product implementation mode is to separately divide a fingerprint identification area on the touch panel, but the fingerprint identification functions and the touch functions still adopt independent chips, the manufacturing cost is high, the fingerprint identification areas need to be raised from the touch pads by a certain height, so that the appearance effect and the operation smoothness of the touch pads of the computers are influenced, in addition, the current routing and fingerprint identification areas are mostly added with oxidation or acrylic patterns after a surface pattern is large, the scheme is easy to develop in the long-term use process, and the novel touch pad positioning requirement is met.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a computer touch pad and notebook computer aims at reducing the cost of manufacture of touch operation and fingerprint identification integral type touch pad, improves touch pad outward appearance effect and long-term use sensitivity.
In order to achieve the above object, the utility model adopts the following technical scheme: in a first aspect, a computer touch pad is provided, which comprises a glass substrate, an IC chip and a PCB main control board; the touch screen comprises a glass substrate, a touch sensing area, a fingerprint sensing area, a touch sensing area and a touch screen, wherein the position of the surface of the glass substrate, which is close to one edge of the surface of the glass substrate, is provided with the fingerprint sensing area, the other positions of the surface of the glass substrate are the touch sensing area, a plurality of pixel points are distributed in the fingerprint sensing area, and a plurality of touch points are distributed in the touch sensing area; the IC chip is attached to the position, close to the fingerprint sensing area, of the glass substrate, the IC chip is connected with each pixel point through one Rx and one Tx printed on the surface of the glass substrate, and the IC chip is connected with each touch point through at least one Rx printed on the surface of the glass substrate; the PCB main control board is attached to the glass substrate, a first connector which is in communication connection with the IC chip to adopt fingerprint information and touch information is arranged on the PCB main control board, a second connector which is in communication connection with the computer main board to exchange the fingerprint information is further arranged, and a third connector which is in communication connection with the computer main board to exchange the touch information is further arranged.
With reference to the first aspect, in a possible implementation manner, the fingerprint sensing area is located in the middle of the plate surface of the glass substrate and is close to the top edge of the glass substrate.
In some embodiments, the IC chip and the first connector are communicatively connected through an FPC.
In combination with the first aspect, in a possible implementation manner, a grounding wire area is arranged at a circumferential edge position of the glass substrate, a grounding copper foil is arranged on the PCB main control board, and the grounding copper foil is electrically connected with the grounding wire area.
Illustratively, two sides of the PCB main control board are respectively provided with a horizontal rabbet, a grounding copper foil is embedded in each horizontal rabbet, and the two grounding copper foils are respectively attached to and conducted with two side edges of the grounding wire area.
For example, two opposite wall surfaces of the grounding copper foil protrude out of two side plate surfaces of the PCB main control board respectively, and are fixed with the glass substrate and the mounting area on the computer respectively through conductive glue.
In some embodiments, the middle area of the PCB main control board is provided with an MCU for data acquisition and operation, and the first connector, the second connector and the third connector are all electrically connected to the MCU.
Exemplarily, two sides of the bottom of the PCB main control board are respectively provided with a contact switch, and the two contact switches are respectively electrically connected with the MCU.
The utility model provides a computer touch pad's beneficial effect lies in: compared with the prior art, the utility model discloses computer touch pad, through printing in the corresponding Rx line and Tx line in glass substrate surface, can be connected to the IC chip with each pixel of fingerprint response region and each touch point in the touch response region, the IC chip can be through being connected with first connector to PCB main control board transmission fingerprint information and touch information, PCB main control board rethread second connector is connected and is realized the fingerprint information interaction with the computer on the corresponding interface of computer mainboard, connect the touch information interaction with the computer on the corresponding interface of computer mainboard through the third connector, fingerprint response and touch response share a chip, compare in the current touch with the touch pad of fingerprint function can reduce a chip, not only can reduce cost, and save space, avoid fingerprint response region protruding and influence outward appearance and operation, and glass panels hardness is high, corrosion resistance and wearability are strong, thereby can improve the life of fingerprint response, guarantee long-term use touch and fingerprint response sensitivity.
In a second aspect, the embodiment of the present invention further provides a notebook computer, including the above computer touch pad, having the same beneficial effects as the above computer touch pad, which is not repeated herein.
Drawings
Fig. 1 is a schematic front view of a computer touch panel according to an embodiment of the present invention;
fig. 2 is a schematic structural view illustrating a glass substrate and a PCB main control board of the computer touch panel according to an embodiment of the present invention are unfolded;
fig. 3 is a schematic diagram of a cross-sectional structure of a thickness direction of a computer touch panel according to an embodiment of the present invention.
In the figure: 10. a glass substrate; 11. a fingerprint sensing area; 12. a touch sensitive area; 13. a ground routing area; 20. an IC chip; 30. a PCB main control board; 31. a first connector; 32. a second connector; 33. a third connector; 34. MCU; 35. a contact switch; 40. FPC; 50. a grounding copper foil; 51. a conductive adhesive; 60. and (7) carrying out gum application.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to fig. 3, a computer touch panel according to the present invention will now be described. The computer touch panel comprises a glass substrate 10, an IC chip 20 and a PCB main control board 30; a fingerprint sensing area 11 is arranged on a position, close to one edge, of the plate surface of the glass substrate 10, other positions of the plate surface are touch sensing areas 12, a plurality of pixel points are distributed in the fingerprint sensing area 11, and a plurality of touch points are distributed in the touch sensing area 12; the IC chip 20 is attached to the position, close to the fingerprint sensing area 11, of the glass substrate 10, the IC chip 20 is connected with each pixel point through one Rx and one Tx printed on the surface of the glass substrate 10, and the IC chip 20 is connected with each touch point through at least one Rx printed on the surface of the glass substrate 10; the PCB main control board 30 is attached to the glass substrate 10, a first connector 31 which is in communication connection with the IC chip 20 to adopt fingerprint information and touch information is arranged on the PCB main control board 30, a second connector 32 which is in communication connection with the computer main board to exchange fingerprint information is further arranged, and a third connector 33 which is in communication connection with the computer main board to exchange touch information is further arranged.
It should be understood that, in the field of communications, rx refers to receive, tx refers to transport, and transmit, each touch point of the touch sensing area 12 is composed of at least one Rx (specifically, one Rx and one reference line, or several Rx and several Tx) connected to the IC chip 20, and each pixel point of the fingerprint sensing area is composed of one Rx and one Tx connected to the IC chip 20.
Referring to fig. 2 and 3, in the present embodiment, the glass substrate 10 and the PCB main control board 30 are attached by the adhesive 60 coated on the bonding surface of the two, and the adhesive area should avoid the electronic component area of the PCB main control board 30.
Specifically, the IC chip 20 may adopt a chip start CS408 chip, a part of the traces are connected to the fingerprint sensing area 11, a part of the traces are connected to the touch sensing area 12, in an actual operation process, when a finger presses the touch sensing area 12, the IC chip 20 collects data of the touch sensing area 12 and transmits the data to the PCB main control board 30 through the first connector 31, a finger sliding position is calculated through a touch algorithm, then a touch interrupt pin is pulled down, at this time, after the computer captures that the touch interrupt pin is low through the third connector 33, the computer requests to report point data from the PCB main control board 30 through the first connector 31, at this time, the PCB main control board 30 transmits the report point data to the computer for data analysis, thereby identifying what kind of event (click, double click, sliding) the touch event is, and after the event identification is successful, the computer executes a corresponding action; when a finger presses the fingerprint sensing area 11, the PCB main control board 30 pulls up the fingerprint interrupt pin, when the computer fingerprint driving program detects that the interrupt pin is high, an instruction for acquiring an image is issued through the second connector 32, when the PCB main control board 30 receives the instruction, the fingerprint image is acquired, the image acquisition is completed, data is transmitted to the computer through the second connector 32, the computer judges whether the current image is usable through a template function created by a fingerprint algorithm, if the current image is usable, an input or comparison interface of the algorithm is called to complete input and comparison of the fingerprint, if the image is not usable, the acquisition failure is prompted, it should be emphasized that the above operation process is realized based on the existing software program of the touch pad product provided by the embodiment, the touch algorithm and the fingerprint algorithm involved in the process are both the prior art, and the embodiment reflects the improvement on the hardware structure of the touch pad.
Compared with the prior art, the computer touch pad provided by the embodiment can connect each pixel point of the fingerprint sensing area 11 and each touch point in the touch sensing area 12 to the IC chip 20 by printing the corresponding Rx line and Tx line on the surface of the glass substrate 10, the IC chip 20 can transmit fingerprint information and touch information to the PCB main control board 30 by connecting with the first connector 31, the PCB main control board 30 is connected to the corresponding interface of the computer main board by the second connector 32 to realize fingerprint information interaction with the computer, the IC chip is connected to the corresponding interface of the computer main board by the third connector 33 to realize touch information interaction with the computer, the fingerprint sensing and the touch sensing share one chip, compared with the touch pad with the current touch and fingerprint function, the cost can be reduced, the space can be saved, the influence of the appearance and operation due to the protrusion of the fingerprint sensing area 11 can be avoided, the glass panel has high hardness and strong corrosion resistance and wear resistance, thereby the service lives of the touch pad and the fingerprint sensing can be prolonged, and the touch and fingerprint sensing sensitivity for long-term use can be ensured.
In some embodiments, referring to fig. 1 and 2, the fingerprint sensing area 11 is located in the middle of the surface of the glass substrate 10 and near the top edge of the glass substrate 10; the IC chip 20 and the first connector 31 are communicatively connected through the FPC 40. It should be understood that, the trace of the fingerprint sensing area 11 is relatively dense, and here, the fingerprint sensing area 11 is divided into the middle and upper positions of the glass substrate 10, so that the trace can be conveniently routed, and the connection with the first connector 31 is realized through the FPC40 (Flexible Printed Circuit board), so that the communication between the IC chip 20 and the PCB main control board 30 is realized, the connection mode is simple and reliable, and the occupied space is small.
In some possible implementations, referring to fig. 2 and 3, a grounding trace area 13 is disposed at a peripheral edge of the glass substrate 10, a grounding copper foil 50 is disposed on the pcb main control board 30, and the grounding copper foil 50 is electrically connected to the grounding trace area 13. The main purpose of the connection between the edge ground trace region 13 and the ground copper foil 50 is to realize ESD (Electro-Static discharge) protection and improve the reliability of use.
Specifically, referring to fig. 2 and 3, two horizontal embedding openings are respectively formed on two sides of the pcb main control board 30, a grounding copper foil 50 is embedded in each horizontal embedding opening, and the two grounding copper foils 50 are respectively attached to and conducted with two side edges of the grounding wire area 13; two opposite wall surfaces of the grounding copper foil 50 respectively protrude out of two side plate surfaces of the PCB main control board 30, and are respectively fixed to the glass substrate 10 and a mounting area on a computer by adhesion of a conductive adhesive 51. The PCB main control board 30 and the glass substrate 10 are adhered through the grounding copper foil 50 with the double-sided conductive adhesive 60, so that the ESD protection can be realized on a compact structure, the space is saved, the connection reliability is high, and the operation noise can be reduced to a certain extent.
It should be understood that, in the present embodiment, the MCU34 for data acquisition and operation is disposed in the middle area of the PCB main control board 30, and the first connector 31, the second connector 32, and the third connector 33 are all electrically connected to the MCU 34; two sides of the bottom of the PCB main control board 30 are respectively provided with a contact switch 35, and the two contact switches 35 are respectively electrically connected with the MCU 34. The MCU34 (micro controller Unit, single chip microcomputer) can calculate the touch information or fingerprint information collected through the first connector 31, meanwhile, the second connector 32 is used for communicating the fingerprint information with a computer, the third connector 33 is used for communicating the touch information with the computer, interaction work of touch and fingerprints is completed, touch sliding and fingerprint unlocking are further achieved, and the two contact switches 35 on the two sides of the bottom of the PCB main control board 30 can be used for pressing operation respectively and are equivalent to functions of left and right keys of a mouse.
Based on the same inventive concept, as understood with reference to fig. 1 to 3, an embodiment of the present application further provides a notebook computer, including the computer touch pad.
In the notebook computer provided by the embodiment, the touch pad is printed on the corresponding Rx line and Tx line on the surface of the glass substrate 10, each pixel point of the fingerprint sensing area 11 and each touch point in the touch sensing area 12 can be connected to the IC chip 20, the IC chip 20 can transmit fingerprint information and touch information to the PCB main control board 30 through the connection with the first connector 31, the PCB main control board 30 is connected to the corresponding interface of the computer main board through the second connector 32 to realize the fingerprint information interaction with the computer, the touch information interaction with the computer is realized through the connection with the corresponding interface of the computer main board through the third connector 33, the fingerprint sensing and the touch sensing share one chip, compared with the current touch and fingerprint function touch pad, the cost can be reduced, the space can be saved, the influence of the appearance and the operation due to the protrusion of the fingerprint sensing area 11 can be avoided, the glass panel has high hardness, strong corrosion resistance and wear resistance, the service life of the touch pad and the fingerprint sensing can be prolonged, and the touch and fingerprint sensing sensitivity for long-term use can be ensured.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. Computer touchpad, characterized by, includes:
the touch screen comprises a glass substrate, wherein a fingerprint sensing area is arranged at a position, close to one edge, of the surface of the glass substrate, and other positions of the surface of the glass substrate are touch sensing areas, wherein a plurality of pixel points are distributed in the fingerprint sensing area, and a plurality of touch points are distributed in the touch sensing area;
the IC chip is attached to the position, close to the fingerprint sensing area, of the glass substrate, connected with each pixel point through an Rx and a Tx printed on the surface of the glass substrate, and connected with each touch point through at least one Rx printed on the surface of the glass substrate;
the PCB main control board, with the laminating of glass substrate, be equipped with on the PCB main control board with IC chip communication connection is in order to adopt the first connector of fingerprint information and touch information, still be equipped with computer mainboard communication connection with mutual fingerprint information's second connector to and with computer mainboard communication connection with mutual touch information's third connector.
2. The computer touchpad as claimed in claim 1 wherein the fingerprint sensing area is located in the middle of the face of the glass substrate and near the top edge of the glass substrate.
3. The computer touch pad according to claim 1, wherein the IC chip and the first connector are communicatively connected through an FPC.
4. The computer touch pad according to claim 1, wherein a grounding trace area is disposed at a peripheral edge of the glass substrate, and a grounding copper foil is disposed on the PCB main control board and electrically connected to the grounding trace area.
5. The computer touch pad according to claim 4, wherein two horizontal embedding openings are respectively formed on two sides of the PCB main control board, the grounding copper foil is embedded in each horizontal embedding opening, and the two grounding copper foils are respectively attached to and conducted with two side edges of the grounding wire area.
6. The computer touch panel according to claim 5, wherein two opposite wall surfaces of the grounding copper foil respectively protrude from two side plate surfaces of the PCB main control board, and are respectively fixed with the glass substrate and a mounting area on a computer through conductive adhesive.
7. The computer touch panel according to any one of claims 1 to 6, wherein an MCU for data acquisition and calculation is provided in a middle region of the PCB main control board, and the first connector, the second connector, and the third connector are electrically connected to the MCU.
8. The computer touch pad according to claim 7, wherein two sides of the bottom of the PCB main control board are respectively provided with a contact switch, and the two contact switches are respectively electrically connected with the MCU.
9. A notebook computer, comprising a computer touchpad as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221733791.5U CN217955002U (en) | 2022-07-05 | 2022-07-05 | Computer touch pad and notebook computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221733791.5U CN217955002U (en) | 2022-07-05 | 2022-07-05 | Computer touch pad and notebook computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217955002U true CN217955002U (en) | 2022-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221733791.5U Active CN217955002U (en) | 2022-07-05 | 2022-07-05 | Computer touch pad and notebook computer |
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| Country | Link |
|---|---|
| CN (1) | CN217955002U (en) |
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2022
- 2022-07-05 CN CN202221733791.5U patent/CN217955002U/en active Active
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