CN220455812U - Full-screen liquid crystal handwriting board with Hall switch - Google Patents
Full-screen liquid crystal handwriting board with Hall switch Download PDFInfo
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- CN220455812U CN220455812U CN202322102656.1U CN202322102656U CN220455812U CN 220455812 U CN220455812 U CN 220455812U CN 202322102656 U CN202322102656 U CN 202322102656U CN 220455812 U CN220455812 U CN 220455812U
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- liquid crystal
- hall switch
- handwriting
- crystal handwriting
- screen
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 64
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000006698 induction Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 239000012634 fragment Substances 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 abstract description 3
- 241001422033 Thestylus Species 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a full-screen liquid crystal handwriting board with a Hall switch, which comprises an assembly substrate, a liquid crystal handwriting film, a control circuit board, a surface patch and a handwriting pen; the mounting substrate is provided with a mounting groove; the liquid crystal handwriting film is arranged on the surface of the assembly substrate, and pins are arranged on the liquid crystal handwriting film. The liquid crystal handwriting board has the same product size, the screen occupation ratio is increased from about 78% to about 95% of the traditional liquid crystal handwriting board, the writing area is larger, and social resources are saved; the same screen ratio, the button is by traditional push type contact pot shell fragment, change into by hall switch control magnetic induction and switch on contactless circuit, when the magnet at handwriting pen top is close to the hall switch of circuit board about 5mm apart from, magnetism switches on hall switch clear screen circuit and directly clears the screen, need not to press, has saved the energy, has solved traditional clear screen button and has pressed for a long time, and the button is malfunctioning, and the button is damaged, and the button sign is fuzzy, influences the problem such as clear experience.
Description
Technical Field
The utility model belongs to the technical field of liquid crystal handwriting boards, and particularly relates to a full-screen liquid crystal handwriting board with a Hall switch.
Background
The liquid crystal handwriting board, also called liquid crystal electronic handwriting board, is an electronic device which adopts high-tech flexible liquid crystal technology, displays characters, patterns and figures by means of pressure induction, and can complete writing by lightly stroking and lightly pressing. The liquid crystal handwriting board has the advantages of low power consumption, multiple repeated erasing times, energy conservation, environmental protection, light weight, portability and the like, and is further popular with people.
However, some conventional liquid crystal handwriting boards in the prior art remove screen handwriting by physical keys, which is easy to cause inconvenience for users. However, with the gradual development of technology, a non-contact screen cleaning technology appears on the market. For example, in the patent library, chinese patent publication No. CN217982342U discloses a liquid crystal blackboard for removing handwriting by adopting a Hall magnetic attraction function, and the handwriting on the surface of the liquid crystal handwriting board can be removed through a Hall element. However, in the patent, the frame of the liquid crystal handwriting board is very wide, and the liquid crystal screen occupies relatively low space, so that the whole process of the liquid crystal handwriting board is complex, and the material waste is large.
Therefore, in order to solve the above-mentioned technical problems, it is necessary to provide a full-screen liquid crystal handwriting board with a hall switch.
Disclosure of Invention
The utility model aims to provide a full-screen liquid crystal handwriting board with a Hall switch, which solves the problems of wide frame and relatively low screen occupation of the liquid crystal handwriting board.
In order to achieve the above object, an embodiment of the present utility model provides the following technical solution:
a full-screen liquid crystal handwriting board with Hall switch comprises an assembly substrate, a liquid crystal handwriting film, a control circuit board, a surface patch and a handwriting pen;
the mounting substrate is provided with a mounting groove;
the liquid crystal handwriting film is arranged on the surface of the assembly substrate, and pins are arranged on the liquid crystal handwriting film;
the control circuit board is arranged in the mounting groove, a Hall switch, a bonding pad and a locking switch are arranged on the control circuit board, and the pins are electrically connected with the bonding pad;
the surface is covered on the outer side of the control circuit board;
the handwriting pen is arranged on the side wall of the assembly substrate, a hole groove is formed in the top wall of the handwriting pen, a magnet is arranged in the hole groove, and the magnet corresponds to the Hall switch.
Further, the assembly substrate is formed by plastic injection molding, and comprises a flat assembly surface and a protruding frame.
Further, the liquid crystal handwriting film is glued on the flat assembly surface, the thickness of the liquid crystal handwriting film is lower than the height of the protruding frame, and when the assembly substrate is integrally placed on the table top in an inverted mode, the protruding frame can protect the liquid crystal handwriting film from being scratched by foreign matters.
Further, the surface paste is made of PVC material with single-sided adhesive, the area of the surface paste is larger than the port area of the mounting groove, and the surface paste is used for covering pins and mainly plays a role in attractive appearance.
Further, the stylus is injection molded from POM material.
Further, the side wall of the handwriting pen is connected with the clamping column, the assembly substrate is provided with the clamping groove, the clamping column is inserted into the clamping groove, the handwriting pen and the assembly substrate can be connected together, the handwriting pen is not easy to lose, and the whole use convenience is improved.
Compared with the prior art, the utility model has the following advantages:
1. the screen is increased from about 78% to about 95% of the traditional liquid crystal handwriting board with the same product size, the writing area is larger, and social resources are saved.
2. The same screen ratio, the button is by traditional push type contact pot shell fragment, change into by hall switch control magnetic induction and switch on contactless circuit, when the magnet at handwriting pen top is close to the hall switch of circuit board about 5mm apart from, magnetism switches on hall switch clear screen circuit and directly clears the screen, need not to press, has saved the energy, has solved traditional clear screen button and has pressed for a long time, and the button is malfunctioning, and the button is damaged, and the button sign is fuzzy, influences the problem such as clear experience.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a perspective view of a full-screen liquid crystal handwriting board with a Hall switch according to an embodiment of the utility model;
FIG. 2 is a schematic diagram of the structure of FIG. 1 at A;
FIG. 3 is a schematic diagram of a liquid crystal handwriting film according to an embodiment of the utility model;
FIG. 4 is a schematic diagram of a control circuit board structure according to an embodiment of the utility model;
FIG. 5 is a side view of a stylus according to an embodiment of the utility model.
In the figure: 1. the liquid crystal handwriting film comprises a mounting substrate, a liquid crystal handwriting film, pins 201, a control circuit board 301, hall switches 302, bonding pads 303, a locking switch 4, a face mask 5, a handwriting pen 501, a clamping column 502 and a magnet.
Detailed Description
The present utility model will be described in detail below with reference to the embodiments shown in the drawings. The embodiments are not intended to limit the utility model, but structural, methodological or functional modifications from the embodiments are within the scope of the utility model.
The utility model discloses a full-screen liquid crystal handwriting board with a Hall switch, which is shown in figures 1-5 and comprises an assembly substrate 1, a liquid crystal handwriting film 2, a control circuit board 3, a face sticker 4 and a handwriting pen 5.
Wherein, the assembly substrate 1 is provided with a mounting groove for mounting the control circuit board 3.
The mounting board 1 is injection molded from plastic, typically ABS or HIPS. The mounting substrate 1 comprises a flat mounting surface and a raised rim.
Specifically, in order to improve the screen ratio, the appearance is attractive, practical and convenient to install, and the length and width of the flat assembly surface are generally about 0.3mm larger than the length and width of the liquid crystal handwriting film 2. The width of the protruding rim is typically designed to be 0.8-1.5mm, in this case 1.2mm, and the height of the protruding rim is designed to be 0.4-1mm, in this case 0.8mm.
Referring to fig. 1 to 5, a liquid crystal handwriting film 2 is mounted on the surface of a mounting substrate 1, and the liquid crystal handwriting film 2 is used for writing. Pins 201 are provided on the liquid crystal handwriting film 2 for connecting the liquid crystal handwriting film 2 with the control circuit board 3.
The liquid crystal handwriting film 2 is glued on a flat assembly surface, and the liquid crystal handwriting film 2 can be mounted on the assembly substrate 1 by means of back surface gluing or edge gluing.
In addition, the thickness of the liquid crystal handwriting film 2 is lower than the height of the protruding frame, and when the whole assembly substrate 1 is placed on the table top upside down, the protruding frame can protect the liquid crystal handwriting film 2 from being scratched by foreign matters.
Referring to fig. 1 to 5, a control circuit board 3 is installed in the installation groove, and the control circuit board 3 provides driving for the liquid crystal handwriting film 2 to clear handwriting.
Preferably, the control circuit board 3 is generally connected to the assembly substrate 1 through screws, so as to facilitate the assembly and disassembly of the control circuit board 3.
The control circuit board 3 is provided with a hall switch 301, a bonding pad 302 and a locking switch 303, the pins 201 are electrically connected with the bonding pad 302, and the pins 201 and the bonding pad 302 are generally connected by a copper mesh or a flexible FPC.
In addition, the surface patch 4 covers the outer side of the control circuit board 3 and is arranged at the pin 201.
Specifically, the surface mount 4 is made of PVC material with single adhesive, the area of the surface mount 4 is larger than the port area of the mounting groove, and the surface mount 4 is used for covering the pins 201 and mainly plays a role in attractive appearance.
Referring to fig. 1-5, a stylus 5 is mounted on a side wall of the mounting substrate 1, the stylus 5 is used for writing on the surface of the liquid crystal handwriting film 2, and simultaneously, the magnet 502 is matched with the hall switch 301 to remove handwriting on the surface of the liquid crystal handwriting film 2.
Preferably, the stylus 5 is injection molded from POM material.
The side wall of the stylus 5 is connected with a clamping column 501, the assembly substrate 1 is provided with a clamping groove, and the clamping column 501 is inserted into the clamping groove. Through inserting the card post 501 into the block groove, can link together handwriting pen 5 and assembly base plate 1, and then can make handwriting pen 5 be difficult for losing, improve whole use convenience.
In addition, the top wall of the stylus 5 is provided with a hole groove, a magnet 502 is arranged in the hole groove, and the magnet 502 corresponds to the Hall switch 301. When the magnet 502 approaches the hall switch 301, the hall switch 301 is turned on under the action of the magnetic field, and the screen clearing circuit on the control circuit board 3 is turned on, so that handwriting on the liquid crystal handwriting film 2 can be cleared.
Preferably, the screen clearing circuit adopted in the application is in the prior art, and redundant description is omitted here.
Alternatively, to simplify the assembly process, the magnet 502 may be a cylindrical magnet, or a bar magnet with a square end face. The magnet 502 is cylindrical in this application.
Specifically, the magnet 502 may be assembled in the slot of the stylus 5 by means of a structural tolerance fit or by bonding with glue.
When in specific use, the liquid crystal handwriting film 2 receives corresponding pressure and reflects natural light when in writing, and the corresponding position realizes display. When the handwriting needs to be cleared, the magnet 502 at the top of the handwriting pen 5 is close to the Hall switch 301 on the control circuit board 3, and the Hall element on the detection surface of the Hall switch 301 changes the state of the internal circuit of the Hall switch 301 due to the Hall effect, so that the control switch is turned on, and the circuit is electrified.
The liquid crystal molecules in the liquid crystal handwriting film 2 deflect under the condition of electrifying, the previous arrangement mode is restored, and handwriting is cleared.
The technical scheme shows that the utility model has the following beneficial effects:
1. the screen is increased from about 78% to about 95% of the traditional liquid crystal handwriting board with the same product size, the writing area is larger, and social resources are saved.
2. The same screen ratio, the button is by traditional push type contact pot shell fragment, change into by hall switch control magnetic induction and switch on contactless circuit, when the magnet at handwriting pen top is close to the hall switch of circuit board about 5mm apart from, magnetism switches on hall switch clear screen circuit and directly clears the screen, need not to press, has saved the energy, has solved traditional clear screen button and has pressed for a long time, and the button is malfunctioning, and the button is damaged, and the button sign is fuzzy, influences the problem such as clear experience.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment contains only one independent technical solution, and that such description is provided for clarity only, and that the technical solutions of the embodiments may be appropriately combined to form other embodiments that will be understood by those skilled in the art.
Claims (6)
1. A full-screen liquid crystal handwriting board with a hall switch, comprising:
the device comprises an assembly substrate (1), wherein an installation groove is formed in the assembly substrate (1);
a liquid crystal handwriting film (2) which is arranged on the surface of the assembly substrate (1), wherein pins (201) are arranged on the liquid crystal handwriting film (2);
the control circuit board (3) is arranged in the mounting groove, a Hall switch (301), a bonding pad (302) and a locking switch (303) are arranged on the control circuit board (3), and the pins (201) are electrically connected with the bonding pad (302);
a surface patch (4) which covers the outer side of the control circuit board (3);
the handwriting pen (5) is arranged on the side wall of the assembly substrate (1), a hole groove is formed in the top wall of the handwriting pen (5), a magnet (502) is arranged in the hole groove, and the magnet (502) corresponds to the Hall switch (301).
2. The full-screen liquid crystal display (lc) handwriting board with hall switch according to claim 1, wherein the assembly substrate (1) is injection molded from plastic, and the assembly substrate (1) comprises a flat assembly surface and a protruding frame.
3. The full-screen liquid crystal handwriting board with a hall switch according to claim 2 is characterized in that the liquid crystal handwriting film (2) is glued on the flat assembly surface, and the thickness of the liquid crystal handwriting film (2) is lower than the height of the raised frame.
4. The full-screen liquid crystal handwriting board with the hall switch according to claim 1, wherein the surface patch (4) is made of a single-sided adhesive PVC material, and the area of the surface patch (4) is larger than the port area of the mounting groove.
5. The full screen liquid crystal handwriting board with hall switch according to claim 1 wherein said handwriting pen (5) is injection molded from POM material.
6. The full-screen liquid crystal handwriting board with the Hall switch according to claim 1, wherein a clamping column (501) is connected to the side wall of the handwriting pen (5), a clamping groove is formed in the assembly substrate (1), and the clamping column (501) is inserted into the clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322102656.1U CN220455812U (en) | 2023-08-07 | 2023-08-07 | Full-screen liquid crystal handwriting board with Hall switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322102656.1U CN220455812U (en) | 2023-08-07 | 2023-08-07 | Full-screen liquid crystal handwriting board with Hall switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220455812U true CN220455812U (en) | 2024-02-06 |
Family
ID=89735884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322102656.1U Active CN220455812U (en) | 2023-08-07 | 2023-08-07 | Full-screen liquid crystal handwriting board with Hall switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220455812U (en) |
-
2023
- 2023-08-07 CN CN202322102656.1U patent/CN220455812U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |