CN209803742U - liquid crystal screen handwriting board with local erasable function - Google Patents
liquid crystal screen handwriting board with local erasable function Download PDFInfo
- Publication number
- CN209803742U CN209803742U CN201920549826.1U CN201920549826U CN209803742U CN 209803742 U CN209803742 U CN 209803742U CN 201920549826 U CN201920549826 U CN 201920549826U CN 209803742 U CN209803742 U CN 209803742U
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- China
- Prior art keywords
- handwriting
- liquid crystal
- local
- erasing
- key
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Abstract
The utility model provides a take LCD screen handwriting pad of local erasable function, including handwriting pad body, handwriting LCD screen, drive circuit part, be equipped with the handwriting LCD screen on the handwriting pad body, the handwriting LCD screen below is equipped with the drive circuit part, the handwriting LCD screen with drive circuit part electric connection, the beneficial effects of the utility model reside in that: the liquid crystal screen handwriting board is provided with a local erasing key and a full erasing key, and when the local erasing key on the liquid crystal screen handwriting board is pressed, handwriting in the liquid crystal screen handwriting board can be erased; when a full-erasing key on the liquid crystal screen handwriting board is pressed, the handwriting in the liquid crystal handwriting screen can be erased; the local erasing function is realized on the basis of erasing the handwriting on the liquid crystal handwriting screen by one key, and the use is more convenient; the utility model provides a circuit design is simple, with low costs, easy operation.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a teaching aid technical field especially relates to a take LCD screen handwriting pad of function can be wiped to part.
[ background of the invention ]
The liquid crystal handwriting board is available in the market, a user can write with hard objects, but due to technical limitation, all handwriting can be cleared only by one key, and local erasing cannot be realized, so that the liquid crystal handwriting board is limited in wide application.
[ Utility model ] content
The utility model aims to solve the technical problem that current liquid crystal handwriting pad can not the local erase and not enough a novel take local LCD screen handwriting pad that can erase the function that provides.
The utility model discloses a realize through following technical scheme:
The utility model provides a take local LCD screen handwriting pad that can erase function, includes handwriting pad body, handwriting LCD screen, drive circuit part, be equipped with the handwriting LCD screen on the handwriting pad body, handwriting LCD screen below is equipped with the drive circuit part, the handwriting LCD screen with drive circuit part electric connection.
Further, the drive circuit component comprises a single chip microcomputer microprocessor, a power supply, a switch, an office erasing key, a full erasing key, an indicator light, an erasing drive circuit and a battery, the office erasing key is arranged on the single chip microcomputer microprocessor, the full erasing key is arranged on the right side of the office erasing key, the erasing drive circuit is arranged on the left side of the office erasing key, the battery is arranged on one side of the single chip microcomputer microprocessor, the indicator light is arranged between the office erasing key and the full erasing key, the single chip microcomputer microprocessor is respectively electrically connected with the switch, the office erasing key, the full erasing key and the indicator light, the power supply is electrically connected with the switch, the power supply is electrically connected with the battery, and the single chip microcomputer microprocessor is electrically connected with the handwriting liquid crystal screen through the.
Furthermore, the writing board body comprises a bottom board and a cover board, the cover board is arranged above the bottom board, and a clamping groove is formed in the top of the bottom board.
Furthermore, a local wiping button is arranged at the lower part of the cover plate, a full wiping button is arranged on one side of the local wiping button, the local wiping button is matched with the local wiping key, and the full wiping button is matched with the full wiping key.
The liquid crystal display handwriting board is characterized by further comprising a writing pen, the writing pen is matched with the liquid crystal display handwriting board for use, the writing pen is inserted into the clamping groove in the top of the bottom board, and the writing pen is used for writing on the liquid crystal display handwriting board body.
Further, the battery is a button battery.
The beneficial effects of the utility model reside in that:
(1) The liquid crystal screen handwriting board is provided with a local erasing key and a full erasing key, and when the local erasing key on the liquid crystal screen handwriting board is pressed, handwriting in the liquid crystal screen handwriting board can be erased; when a full-erasing key on the liquid crystal screen handwriting board is pressed, the handwriting in the liquid crystal handwriting screen can be erased;
(2) The local erasing function is realized on the basis of erasing the handwriting on the liquid crystal handwriting screen by one key, and the use is more convenient;
(3) the utility model provides a circuit design is simple, at the bottom of the cost, easy operation.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a liquid crystal display handwriting board with a local erasing function according to the present invention;
Fig. 2 is an exploded view of a liquid crystal display handwriting pad with a partially erasable function according to the present invention;
FIG. 3 is a schematic structural diagram of the driving circuit component of the present invention;
fig. 4 is a schematic diagram of the driving circuit components of the present invention;
FIG. 5 is a schematic view of the structure of the writing pen of the present invention;
reference numerals: 1. a handwriting board body; 11. a base plate; 12. a cover plate; 120. a local erasing button; 121. a full-wiping button; 13. a card slot; 2. handwriting the liquid crystal screen; 3. a drive circuit part; 31. a singlechip microprocessor; 32. a power source; 33. a switch; 34. locally erasing keys; 35. fully wiping keys; 36. an indicator light; 37. an erase driving circuit; 38. a battery; 4. a writing pen.
[ detailed description ] embodiments
the invention will be further described with reference to the accompanying drawings and specific embodiments:
As shown in fig. 1 and 2, a liquid crystal display handwriting pad with a local erasable function includes a handwriting pad body 1, a handwriting liquid crystal display 2, and a driving circuit component 3, the handwriting liquid crystal display 2 is arranged on the handwriting pad body 1, the driving circuit component 3 is arranged below the handwriting liquid crystal display 2, and the handwriting liquid crystal display 2 is electrically connected to the driving circuit component 3.
as shown in fig. 3 and 4, the driving circuit component 3 includes a single chip microcomputer microprocessor 31, a power supply 32, a switch 33, an office erasing key 34, a full erasing key 35, an indicator light 36, an erasing driving circuit 37, and a battery 38, the single chip microcomputer microprocessor 31 is provided with the office erasing key 34, the right side of the office erasing key 34 is provided with the full erasing key 35, the left side of the office erasing key 34 is provided with the erasing driving circuit 37, one side of the single chip microcomputer microprocessor 31 is provided with the battery 38, the indicator light 36 is arranged between the office erasing key 34 and the full erasing key 35, the single chip microcomputer microprocessor 31 is respectively electrically connected with the switch 33, the office erasing key 34, the full erasing key 35, and the indicator light 36, the power supply 32 is electrically connected with the switch 33, the power supply 32 is electrically connected with the battery 38, and the single chip microcomputer microprocessor 31 is electrically connected with the liquid crystal.
preferably, the writing pad body 1 includes a bottom plate 11 and a cover plate 12, the cover plate 12 is disposed above the bottom plate 11, and a clamping groove 13 is disposed at the top of the bottom plate 11.
Preferably, the lower part of the cover plate 12 is provided with a partial wiping button 120, one side of the partial wiping button 120 is provided with a full wiping button 121, the partial wiping button 120 is matched with the partial wiping key 34, and the full wiping button 121 is matched with the full wiping key 35.
As shown in fig. 5, the liquid crystal display handwriting board further comprises a writing pen 4, the writing pen 4 is used in cooperation with the liquid crystal display handwriting board, the writing pen 4 is inserted into the clamping groove 13 at the top of the bottom plate 11, and the writing pen 4 is used for writing on the liquid crystal display handwriting board 2 on the handwriting board body 1.
Preferably, the battery 38 is a button cell battery.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (6)
1. The utility model provides a take LCD screen handwriting pad of function that can be erased locally which characterized in that: the handwriting board comprises a handwriting board body, a handwriting liquid crystal screen and a driving circuit component, wherein the handwriting liquid crystal screen is arranged on the handwriting board body, the driving circuit component is arranged below the handwriting liquid crystal screen, and the handwriting liquid crystal screen is electrically connected with the driving circuit component.
2. The liquid crystal display handwriting board with the local erasing function of claim 1, characterized in that: the drive circuit component comprises a single chip microcomputer microprocessor, a power supply, a switch, a local erasing key, a full erasing key, an indicating lamp, an erasing drive circuit and a battery, wherein the local erasing key is arranged on the single chip microcomputer microprocessor, the full erasing key is arranged on the right side of the local erasing key, the erasing drive circuit is arranged on the left side of the local erasing key, the battery is arranged on one side of the single chip microcomputer microprocessor, the indicating lamp is arranged between the local erasing key and the full erasing key, the single chip microcomputer microprocessor is respectively electrically connected with the switch, the local erasing key, the full erasing key and the indicating lamp, the power supply is electrically connected with the switch, the power supply is electrically connected with the battery, and the single chip microcomputer microprocessor is electrically connected with the handwriting liquid crystal.
3. the liquid crystal display handwriting board with the local erasing function of claim 1, characterized in that: the handwriting board body comprises a bottom board and a cover board, the cover board is arranged above the bottom board, and a clamping groove is formed in the top of the bottom board.
4. The liquid crystal display handwriting board with the local erasing function of claim 3, characterized in that: the lower part of the cover plate is provided with a local wiping button, one side of the local wiping button is provided with a full wiping button, the local wiping button is matched with the local wiping key, and the full wiping button is matched with the full wiping key.
5. The liquid crystal display handwriting board with the local erasing function of claim 3, characterized in that: the liquid crystal display handwriting board is characterized by further comprising a writing pen, the writing pen is matched with the liquid crystal display handwriting board for use, the writing pen is inserted into the clamping groove in the top of the bottom plate, and the writing pen is used for writing on the handwriting liquid crystal display on the handwriting board body.
6. The liquid crystal display handwriting board with the local erasing function of claim 2, characterized in that: the battery is a button battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920549826.1U CN209803742U (en) | 2019-04-22 | 2019-04-22 | liquid crystal screen handwriting board with local erasable function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920549826.1U CN209803742U (en) | 2019-04-22 | 2019-04-22 | liquid crystal screen handwriting board with local erasable function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209803742U true CN209803742U (en) | 2019-12-17 |
Family
ID=68830411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920549826.1U Expired - Fee Related CN209803742U (en) | 2019-04-22 | 2019-04-22 | liquid crystal screen handwriting board with local erasable function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209803742U (en) |
-
2019
- 2019-04-22 CN CN201920549826.1U patent/CN209803742U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20200422 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |