CN219039518U - Separated liquid crystal handwriting removing device and liquid crystal handwriting board system - Google Patents

Abstract

A separated liquid crystal handwriting removing device and a liquid crystal handwriting system, wherein the separated liquid crystal handwriting removing device comprises a power supply, an erasing module and a first contactable conductive pin, the power supply is connected with the erasing module, the erasing module is connected with the first contactable conductive pin, and the separated liquid crystal handwriting removing device can be used for supplying power to a liquid crystal handwriting board through the first contactable conductive pin and a second contactable conductive pin on the liquid crystal handwriting board so as to erase pressure handwriting on the liquid crystal handwriting board. The utility model sets the power supply and the erasing module in an independent mode, which is convenient to replace or maintain, when the erasing function has a problem, the new separated liquid crystal handwriting removing device can be directly replaced, and the whole liquid crystal handwriting board is not required to be replaced or disassembled for maintenance, thereby avoiding unnecessary loss. In addition, the occupied space of components of the liquid crystal handwriting board can be greatly reduced, and the actual use area of a screen can be effectively increased.

Description

Separated liquid crystal handwriting removing device and liquid crystal handwriting board system

[ field of technology ]

The utility model relates to a cholesteric liquid crystal handwriting board, in particular to a separated liquid crystal handwriting board handwriting removing device and a liquid crystal handwriting board system.

[ background Art ]

Cholesteric liquid crystals have bistable character, pressure sensitive character and visible bragg selective reflection character, which can take on two states: a transparent state and a color reflective state. When the cholesteric liquid crystal is in a transparent state, it does not reflect light; when the cholesteric liquid crystal is in a color reflection state, light is reflected to display content. When a voltage is applied to the cholesteric liquid crystal, the cholesteric liquid crystal can switch between a transparent state and a color reflective state.

The existing liquid crystal handwriting board is generally made of cholesteric liquid crystal, and when a writing pen is used for writing on the handwriting board, the cholesteric liquid crystal is in a color reflection state under the action of pressure so as to display pressure handwriting; under the action of no external electric field, the cholesteric liquid crystal can maintain the state so that handwriting does not disappear. When the pressure handwriting needs to be cleared, an electric field is applied to the cholesteric liquid crystal, so that the cholesteric liquid crystal which is turned into a color reflection state is turned into a transparent state.

In order to apply an electric field to cholesteric liquid crystal, a conventional liquid crystal handwriting board is generally provided with conductive films on two sides of a cholesteric liquid crystal layer, electrodes are arranged on the conductive films, and the conductive films are communicated with a cleaning circuit through the electrodes. The existing liquid crystal handwriting board is generally provided with a key on the handwriting board, and a power supply and a clearing circuit are arranged in the handwriting board; when the key is pressed, the cleaning circuit supplies power to the conductive film through the electrode on the conductive film, so that the pressure handwriting is clearly removed.

In the existing liquid crystal handwriting board, the power supply and the clearing circuit are of an integral structure, so that part of the space of the liquid crystal handwriting board can be occupied to reduce the actual use area of a screen, in addition, one power supply can only be matched with one liquid crystal handwriting board, if the circuit fails, the liquid crystal handwriting board cannot be replaced or maintained, and a user can only purchase a new liquid crystal handwriting board again, so that the use cost is increased.

[ utility model ]

The present utility model is directed to solving the above-mentioned problems, and provides a split-type liquid crystal handwriting removing device and a liquid crystal handwriting board system.

In order to solve the above problems, the utility model provides a split type liquid crystal handwriting removing device, which is characterized by comprising a power supply, an erasing module and a first contact type conductive pin, wherein the power supply is connected with the erasing module, the erasing module is connected with the first contact type conductive pin, and the device can be used for supplying power to the liquid crystal handwriting board through the contact of the first contact type conductive pin and a second contact type conductive pin on the liquid crystal handwriting board so as to erase pressure handwriting on the liquid crystal handwriting board.

Further, the device is provided with a first magnetic piece which can be adsorbed with the liquid crystal handwriting board to enable the first contact type conductive pin and the second contact type conductive pin to be aligned and attached fast.

Further, the first contactable conductive pin includes first and second spaced pins.

Further, the device also comprises a switch key, wherein the switch key is connected with the erasing module; when the switch key is in an on state, the device can supply power to the liquid crystal handwriting board through the contact of the first contact type conductive pin and the pin on the liquid crystal handwriting board so as to erase handwriting; when the switch key is in a closed state, the device cannot supply power to the liquid crystal handwriting board through the contact of the first contact type conductive pin and the pin on the liquid crystal handwriting board so as to erase handwriting.

Further, the power supply, the erasing module and the first contact type conductive pin are arranged in a medium separated from the liquid crystal handwriting board.

Further, the medium comprises a handwriting pen matched with the liquid crystal handwriting board.

In addition, the utility model also provides a liquid crystal handwriting board system, which is characterized by comprising the separated liquid crystal handwriting board handwriting cleaning device and a liquid crystal handwriting board, wherein the separated liquid crystal handwriting board handwriting cleaning device can be separated from the liquid crystal handwriting board, a second contact type conductive pin which can be contacted with the first contact type conductive pin is arranged on the handwriting board, and when the first contact type conductive pin is contacted with the second contact type conductive pin, the separated liquid crystal handwriting board handwriting cleaning device can supply power to the liquid crystal handwriting board so as to erase pressure handwriting on the liquid crystal handwriting board.

Further, the separated liquid crystal handwriting removing device is provided with a first magnetic part, the liquid crystal handwriting board is provided with a second magnetic part capable of attracting the first magnetic part, and the magnetic attraction between the first magnetic part and the second magnetic part can enable the first conductive pin and the second conductive pin to be aligned and attached fast.

Further, the liquid crystal handwriting board is a cholesteric liquid crystal handwriting board.

The present utility model has an advantageous contribution in that it effectively solves the above-mentioned problems. The separated liquid crystal handwriting removing device and the liquid crystal handwriting board are of a split structure design, and the power supply, the erasing module and the first contact type conductive pins are arranged in the split structure, when the split structure is contacted with the second contact type conductive pins on the liquid crystal handwriting board, the separated liquid crystal handwriting board handwriting removing device can supply power to the liquid crystal handwriting board to erase pressure handwriting on the liquid crystal handwriting board, so that the power supply and the erasing module are not required to be arranged in the liquid crystal handwriting board, the structure of the liquid crystal handwriting board can be simplified, the occupied space of other devices can be reduced, and the practical use area of a screen can be increased. In addition, the separated liquid crystal handwriting removing device is separated from the liquid crystal handwriting boards, so that handwriting erasure can be performed on a plurality of liquid crystal handwriting boards through one separated liquid crystal handwriting removing device, on one hand, the utilization rate of the separated liquid crystal handwriting removing device can be improved, the use cost can be reduced, and on the other hand, the separated liquid crystal handwriting removing device can be replaced conveniently, and the problems of circuit faults and the like can be solved. The utility model has the characteristics of novel structure and practical function, can effectively increase the use area of the liquid crystal handwriting board, saves the cost, has strong practicability and is suitable for being widely popularized.

[ description of the drawings ]

Fig. 1 is a block diagram of a liquid crystal handwriting board system.

Fig. 2 is one of structural schematic diagrams of the liquid crystal handwriting board system, which shows a state schematic diagram at the time of separation.

Fig. 3 is one of the structural diagrams of the liquid crystal handwriting removing system, which shows a state in which the separated liquid crystal handwriting removing apparatus 10 is erased by contacting with the liquid crystal handwriting.

Fig. 4 is one of structural schematic diagrams of a liquid crystal handwriting board system.

Fig. 5 is a schematic diagram of a liquid crystal handwriting board system.

Fig. 6 is a schematic diagram of a liquid crystal handwriting board system.

Fig. 7 is a schematic diagram of a liquid crystal handwriting board system.

The attached drawings are identified: the liquid crystal handwriting removing device comprises a separating type liquid crystal handwriting removing device 10, a power supply 11, an erasing module 12, a first contact type conductive pin 13, a first pin 131, a second pin 132, a first protruding part 14, a second groove 15, a third protruding part 16, a first magnetic piece 17, a switch key 18, a liquid crystal handwriting board 20, a second contact type conductive pin 21, a third pin 211, a fourth pin 212, a first groove 22, a second protruding part 23 and a second magnetic piece 24.

[ detailed description ] of the utility model

The following examples are further illustrative and supplementary of the present utility model and are not intended to limit the utility model in any way.

As shown in fig. 1 to 7, the liquid crystal handwriting board system of the present utility model includes a separation type liquid crystal handwriting removing device 10 and a liquid crystal handwriting board 20.

As shown in fig. 1, 2, 4 and 7, the separation type liquid crystal handwriting removing device 10 of the present utility model is a stand-alone device, and is a medium separated from the liquid crystal handwriting board 20.

The form of the split liquid crystal handwriting removing apparatus 10 is not limited, and it may be a rectangular block (as shown in fig. 2, 3, 4, 5, and 6), a sphere, an animal, or a pen (as shown in fig. 7). In this embodiment, as shown in fig. 7, the split liquid crystal handwriting removing device 10 may be configured as a handwriting pen, which can write on the liquid crystal handwriting board 20 and can be used for handwriting erasing, so that the device can be used for two purposes, and provides practical use value of the product.

As shown in fig. 1, the split liquid crystal handwriting removing device 10 of the present utility model is provided with a power supply 11, an erasing module 12 and a first contact-type conductive pin 13. Correspondingly, the liquid crystal handwriting board 20 is provided with a second contact-type conductive pin 21.

As shown in fig. 1, the power supply 11 in the split-type liquid crystal handwriting removing device 10 is used for supplying power, and may be a lithium battery, a button battery, or other battery, which may be specifically set according to needs. Accordingly, the power supply 11 is not disposed in the liquid crystal handwriting board 20.

As shown in fig. 1, an erasing module 12 in the split type liquid crystal handwriting removing apparatus 10 is connected to the power supply 11, and is used for generating a voltage required by the liquid crystal handwriting board 20. The erasing module 12 may be a known erasing module 12, which is not limited in this embodiment. Typically, the erase module 12 may include a power circuit, a boost circuit, an ac control circuit, a sampling feedback circuit, a purge control circuit, and the like. The voltage provided by the power supply 11 can be provided to the conductive film of the liquid crystal handwriting board 20 after passing through the erasing module 12, so as to control the state of the cholesteric liquid crystal to be turned over, thereby realizing the screen cleaning function.

As shown in fig. 1, a first contact-able conductive pin 13 on the split-type liquid crystal handwriting removing device 10 is connected to an output terminal of the erasing module 12, and is used for outputting a voltage to the liquid crystal handwriting board 20. The first conductive pins 13 have a conductive function, and when they are in contact with the corresponding second conductive pins 21 on the liquid crystal handwriting board 20, the voltage output by the erasing module 12 can be transmitted to the liquid crystal handwriting board 20, so that the liquid crystal handwriting board 20 can be powered to erase the pressure handwriting on the liquid crystal handwriting board 20.

The second contact-type conductive pins 13 on the liquid crystal handwriting board 20 are connected with the conductive films in the liquid crystal handwriting board 20, and can electrify the conductive films to drive the cholesteric liquid crystal between the conductive films to turn over.

The shapes of the first and second contactable conductive pins 13 and 21 are not limited, and may be circular pins (as shown in fig. 2, 3 and 4), square pins (as shown in fig. 6), or the like. The shape of the first contact-type conductive pin 13 may be the same as or different from the shape of the second contact-type conductive pin 21, and may be specifically set as required. Preferably, the first and second contact-able conductive pins 13 and 21 are the same shape, thereby facilitating contact conduction.

The number of the first and second contact-type conductive pins 13 and 21 can be set as required. The number of the first and second contactable conductive pins 13 and 21 is identical. Typically, as shown in fig. 2, the first contact-type conductive pin 13 is provided with two pins, including a first pin 131 serving as a positive electrode and a second pin 132 serving as a negative electrode, which are spaced apart by a certain distance; accordingly, the second contact-type conductive pin 21 is provided with two pins including a third pin 211 serving as a positive electrode and a fourth pin 212 serving as a negative electrode only, which are spaced apart by a distance corresponding to the distance by which the first pin 131 and the second pin 132 are spaced apart.

In some embodiments, the first and second pins 131 and 132 may be configured as rectangular shapes with uniform shapes and sizes, and the third and fourth pins 211 and 212 may be configured as rectangular shapes with uniform shapes and sizes.

In some embodiments, as shown in fig. 7, the first pins 131 and the second pins 132 may be arranged in concentric circles, where the second pins 132 are located in the inner ring and have a circular shape; the first pins 131 are located on the outer ring, are annular and are spaced apart from the second pins 132. Accordingly, the shape settings of the third pin 211 and the fourth pin 212 are consistent with the shape settings of the first pin 131 and the second pin 132.

The first conductive pins 13 may be exposed on the surface of the separation type liquid crystal handwriting removing device 10, and correspondingly, the second conductive pins 21 may be exposed on the surface of the liquid crystal handwriting board 20, and the first conductive pins 13 and the second conductive pins 21 may contact in a surface bonding manner, so as to realize electrical conduction and supply power to the liquid crystal handwriting board 20 for pressure handwriting erasing.

The first contact-type conductive pins 13 may protrude from the surface of the split-type liquid crystal handwriting removing device 10, may be slightly recessed from the surface of the split-type liquid crystal handwriting removing device 10, or may be flush with the surface of the split-type liquid crystal handwriting removing device 10, which may be specifically set according to the needs.

The second conductive pins 21 may protrude from the surface of the liquid crystal handwriting board 20, may be slightly recessed from the surface of the liquid crystal handwriting board 20, or may be flush with the surface of the liquid crystal handwriting board 20, and may be specifically set as required.

In some embodiments, as shown in fig. 4, a first protruding portion 14 may be disposed on the split-type liquid crystal handwriting removing apparatus 10, and the first accessible conductive pin 13 may be disposed on a surface of the first protruding portion 14; the liquid crystal handwriting board 20 is provided with a first groove 22 matched with the first bulge part 14, and the wall surface or the bottom surface of the first groove 22 is provided with the second contact type conductive pin 21. When the first protruding portion 14 is inserted into the first groove 22, the first contact-type conductive pin 13 can contact with the second contact-type conductive pin 21, so as to realize electrical conduction for pressure handwriting erasing. The shapes of the first protrusion 14 and the first groove 22 are not limited, and may be specifically set according to need.

In some embodiments, as shown in fig. 2, a second groove 15 may be disposed on the split-type liquid crystal handwriting removing apparatus 10, and the first accessible conductive pin 13 may be disposed on a wall surface or a bottom surface of the second groove 15; a second protruding portion 23 matched with the second groove 15 is arranged on the liquid crystal handwriting board 20, and the second contactable conductive pin 21 is arranged on the surface of the second protruding portion 23. When the second protruding portion 23 is inserted into the second recess 15 (as shown in fig. 3), the first conductive pin 13 may contact the second conductive pin 21, so as to achieve electrical conduction for pressure handwriting erasing. The shapes of the second protruding portion 23 and the second recess 15 are not limited, and may be specifically set according to needs.

In some embodiments, as shown in fig. 5, a third protruding portion 16 may be disposed on the apparatus 10 for removing handwriting of a separate liquid crystal handwriting board, a first conductive contact pin 13 may be disposed on a top surface of the third protruding portion 16, a second conductive contact pin 21 may be disposed on the liquid crystal handwriting board 20, and the second conductive contact pin 21 may be substantially flush with the liquid crystal handwriting board 20, and in use, the third protruding portion 16 may be aligned with the second conductive contact pin 21, so that the first conductive contact pin 13 may be in contact with the second conductive contact pin 21 for handwriting erasing.

In some embodiments, as shown in fig. 6, a first accessible conductive pin 13 may be disposed on a surface of the split-type liquid crystal handwriting removing apparatus 10, where the surface of the first accessible conductive pin 13 is substantially flush with the surface of the split-type liquid crystal handwriting removing apparatus 10; a second contact-type conductive pin 21 is arranged on the surface of the liquid crystal handwriting board 20, and the surface of the second contact-type conductive pin 21 is basically level with the surface of the liquid crystal handwriting board 20; when the split liquid crystal handwriting removing device 10 is attached to the liquid crystal handwriting board 20, the first contact-type conductive pin 13 can contact with the second contact-type conductive pin 21 to remove handwriting.

In this embodiment, as shown in fig. 7, when the split liquid crystal handwriting removing device 10 is configured as a handwriting pen, the first accessible conductive pin 13 may be disposed at an end opposite to the writing pen point, so that the split liquid crystal handwriting removing device can be used like a pencil with an eraser, and one end is used for writing and the other end is used for erasing, thereby being more suitable for daily use habits of users. Of course, the first contact-type conductive pin 13 is not limited to be disposed at the end of the stylus pen opposite to the writing tip, and may be disposed at any suitable location, such as on a side wall of the writing pad.

The first and second conductive pins 13 and 21 may be fixed pins or elastically stretchable pins, which may be specifically set as required.

Further, to facilitate the contact between the first contact-type conductive pin 13 on the split-type liquid crystal handwriting removing device 10 and the second contact-type conductive pin 21 on the liquid crystal handwriting 20, as shown in fig. 2, a first magnetic member 17 may be disposed on the split-type liquid crystal handwriting removing device 10, and a second magnetic member 24 may be disposed on the liquid crystal handwriting 20.

The first magnetic member 17 and the second magnetic member 24 are attracted to each other; when the separated liquid crystal handwriting removing device 10 is close to the corresponding position of the liquid crystal handwriting 20, the separated liquid crystal handwriting removing device 10 and the liquid crystal handwriting 20 are quickly attracted under the magnetic attraction of the first magnetic piece 17 and the second magnetic piece 24, so that the first contactable conductive pin 13 and the second contactable conductive pin 21 are quickly aligned and attached together, and the operation of a user is facilitated.

The positions where the first magnetic member 17 and the second magnetic member 24 are provided may be set as required. For example:

in some embodiments, as shown in fig. 2, a magnet may be disposed on one side or both sides of the first conductive pin 13 to form the first magnetic member 17, and a magnet may be disposed on one side or both sides of the second conductive pin 21 at the same distance to form the second magnetic member 24; when the two pieces magnetically attract each other, the first contact-enabled pin 13 can be quickly aligned with the second contact-enabled pin 21 to make contact, thereby eliminating the process of user alignment.

In some embodiments, a ring of magnets, such as a ring of magnets, may be disposed near the periphery of the first contact-able conductive pin 13 to form the first magnetic member 17, and a ring of magnets may be disposed at the same distance near the periphery of the second contact-able conductive pin 21 to form the second magnetic member 24. When the two circles of magnets are attracted to each other, the first contact-type conductive pin 13 can be aligned with the second contact-type conductive pin 21 quickly to be contacted, so that the process of alignment by a user is avoided.

The shapes of the first magnetic member 17 and the second magnetic member 24 can be set according to the needs, and the embodiment is not limited thereto, and the magnetic attraction between the first magnetic member 17 and the second magnetic member 24 is beneficial to the quick alignment contact between the first conductive pin 13 and the second conductive pin 21.

Further, as shown in fig. 2, the split liquid crystal tablet handwriting removal device 10 further includes a switch button 18. The switch button 18 is connected to the erasing module 12, and is used to control the function of the split liquid crystal handwriting erasing apparatus 10 to be turned on and off.

When the switch button 18 is in an on state, the split-type liquid crystal handwriting removing device 10 can supply power to the liquid crystal handwriting board 20 through the contact of the first contact-type conductive pin 13 and the second contact-type conductive pin 21 on the liquid crystal handwriting board 20 so as to perform pressure handwriting erasing.

When the switch button 18 is in the off state, the split-type liquid crystal handwriting removing device 10 cannot contact the second accessible conductive pin 21 on the liquid crystal handwriting board 20 through the first accessible conductive pin 13 to supply power to the liquid crystal handwriting board 20; at this time, even if the first and second contactable conductive pins 13 and 21 are in contact, the pressure handwriting on the liquid crystal writing board 20 cannot be erased.

Thus, the separated liquid crystal handwriting removing device and the liquid crystal handwriting system are formed. The separated liquid crystal handwriting removing device can be separated from the liquid crystal handwriting boards, so that one separated liquid crystal handwriting removing device can be matched with a plurality of liquid crystal handwriting boards, the utilization rate of the separated liquid crystal handwriting removing device can be improved, and the use cost is reduced. In addition, the power supply and the erasing module are arranged in an independent mode, so that the writing removing device can be conveniently replaced or maintained, when a cleaning function is in a problem, a new separating liquid crystal handwriting board writing removing device can be directly replaced, and the whole liquid crystal handwriting board is not required to be replaced or disassembled for maintenance, so that unnecessary loss can be avoided. On the other hand, because the liquid crystal handwriting board does not need to be provided with a power supply, an erasing module and other structures, the occupation space of components of the liquid crystal handwriting board can be greatly reduced, and the actual use area of a screen can be effectively increased.

Although the present utility model has been disclosed by the above embodiments, the scope of the present utility model is not limited thereto, and each of the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the spirit of the present utility model.

Claims (7)

1. The separated liquid crystal handwriting removing device is characterized by comprising a power supply (11), an erasing module (12) and a first contactable conductive pin (13), wherein the power supply (11), the erasing module (12) and the first contactable conductive pin (13) are arranged in a medium separated from a liquid crystal handwriting board (20); the power supply (11) is connected with the erasing module (12), the erasing module (12) is connected with the first contact-type conductive pin (13), and the device can supply power to the liquid crystal handwriting board (20) through the contact of the first contact-type conductive pin (13) with the second contact-type conductive pin (21) on the liquid crystal handwriting board (20) so as to erase pressure handwriting on the liquid crystal handwriting board (20); the device is provided with a first magnetic piece (17) which can be adsorbed with the liquid crystal handwriting board (20) to enable the first contact type conductive pin (13) and the second contact type conductive pin (21) to be aligned and attached fast.

2. A split liquid crystal tablet handwriting cleaning apparatus according to claim 1, characterized in that said first contactable conductive pins (13) comprise spaced first pins (131) and second pins (132).

3. A split liquid crystal panel handwriting removal apparatus as claimed in claim 1, further comprising a switch key (18), said switch key (18) being connected to said erase module (12); when the switch key (18) is in an on state, the device can supply power to the liquid crystal handwriting board (20) through the contact of the first contact-type conductive pin (13) and the second contact-type conductive pin (21) on the liquid crystal handwriting board (20) so as to erase handwriting; when the switch key (18) is in a closed state, the device cannot supply power to the liquid crystal handwriting board (20) through the contact of the first contact-type conductive pin (13) and the second contact-type conductive pin (21) on the liquid crystal handwriting board (20) so as to erase handwriting.

4. A split liquid crystal panel handwriting removal apparatus (10) as claimed in claim 1 wherein said medium comprises a stylus associated with said liquid crystal panel (20).

5. A liquid crystal handwriting board system, characterized in that the liquid crystal handwriting board system comprises a separated liquid crystal handwriting board handwriting cleaning device (10) and a liquid crystal handwriting board (20) according to any one of claims 1-4, wherein the separated liquid crystal handwriting board handwriting cleaning device (10) can be separated from the liquid crystal handwriting board (20), a second contact type conductive pin (21) which can be contacted with the first contact type conductive pin (13) is arranged on the handwriting board, and when the first contact type conductive pin (13) is contacted with the second contact type conductive pin (21), the separated liquid crystal handwriting board handwriting cleaning device (10) can supply power for the liquid crystal handwriting board (20) to erase pressure handwriting on the liquid crystal handwriting board (20).

6. The liquid crystal handwriting board system according to claim 5, wherein the separated liquid crystal handwriting removing device (10) is provided with a first magnetic piece (17), the liquid crystal handwriting board (20) is provided with a second magnetic piece (23) capable of attracting the first magnetic piece (17), and the magnetic attraction between the first magnetic piece (17) and the second magnetic piece (23) can enable the first contact type conductive pin (13) and the second contact type conductive pin (21) to be aligned and attached quickly.

7. The liquid crystal handwriting board system according to claim 6, wherein the liquid crystal handwriting board (20) is a cholesteric liquid crystal handwriting board.

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