CN209167758U - A kind of multi-color LCD clipboard - Google Patents

A kind of multi-color LCD clipboard Download PDF

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Publication number
CN209167758U
CN209167758U CN201822010074.XU CN201822010074U CN209167758U CN 209167758 U CN209167758 U CN 209167758U CN 201822010074 U CN201822010074 U CN 201822010074U CN 209167758 U CN209167758 U CN 209167758U
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liquid crystal
layer
crystal display
writing
layers
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李清波
李泉堂
杨猛训
王冬
史新立
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Shandong Blue Book Yi Shu Mdt Infotech Ltd
Shandong Lanbeisite Teaching Decoration Group Ltd By Share Ltd
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Shandong Blue Book Yi Shu Mdt Infotech Ltd
Shandong Lanbeisite Teaching Decoration Group Ltd By Share Ltd
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Abstract

The utility model discloses a kind of multi-color LCD clipboards, it include: at least two liquid crystal display layers successively arranged, each liquid crystal display layer includes two conductive layers and the liquid crystal layer that is arranged between two conductive layers, and two conductive layers are divided into two or more conductive regions respectively;The liquid crystal layer of each liquid crystal display layer can reflect different colors.The clipboard of this programme can show the writing of different colours, and the display of color is not influenced by writing position.Overcome the deficiency that previous apparatus for writing is only able to display solid color;Improve the Experience Degree of user.

Description

Multi-color liquid crystal writing board
Technical Field
The utility model relates to a liquid crystal clipboard technical field especially relates to a polychrome liquid crystal clipboard.
Background
The liquid crystal writing board on the market at present has the working principle that the bistable characteristic of liquid crystal is utilized to display and/or erase the writing content on the liquid crystal writing board. For example, the cholesteric liquid crystal is used as a writing film, the writing pressure trace of a writing pen is recorded by the pressure acting on a liquid crystal writing board, and the corresponding writing content is displayed; the cholesteric liquid crystal structure is changed by applying an electric field, so that the writing pressure track on the liquid crystal writing board disappears to realize erasing.
The existing liquid crystal writing board or liquid crystal blackboard can only display single color, can not display different colors at the same time, and can not meet the requirement that writers need to annotate with handwriting with different colors.
The prior art provides a multicolor liquid crystal display film, which divides a liquid crystal layer into a plurality of sub-regions, and controls the wavelength and intensity of light transmitted by each sub-region to make different sub-regions be illuminated by different lights, so that the HTP value is changed therewith, thereby reflecting light with different wavelengths when being pressed and displaying handwriting with different colors. The technical scheme has the disadvantages that the handwriting with the set color can be displayed only at the set position of the liquid crystal writing film, and the handwriting with the single color can still be displayed on the same subarea of the liquid crystal writing board. Therefore, the technical solution still cannot meet the requirement of annotating with handwriting of different colors.
SUMMERY OF THE UTILITY MODEL
The present disclosure is directed to solving the above problems, and provides a multicolor liquid crystal writing board capable of displaying writing traces of different colors simultaneously without being limited by writing positions on the writing board.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in one or more embodiments, disclosed is a multicolor liquid crystal writing board comprising:
the liquid crystal display device comprises at least two liquid crystal display layers which are sequentially arranged, wherein each liquid crystal display layer comprises two conducting layers and a liquid crystal layer arranged between the two conducting layers, and the two conducting layers are respectively divided into two or more conducting areas; the liquid crystal layer of each liquid crystal display layer is capable of reflecting a different color.
Further, a control signal which enables the writing handwriting to display the color corresponding to a certain liquid crystal display layer is applied to the liquid crystal writing board, other liquid crystal display layers, at the position where the writing pressure acts, of the liquid crystal display layer in the direction close to the surface layer are identified as local erasing positioning information, the writing tracks on the liquid crystal display layers are directly erased by applying set voltages to the set conductive areas of the other liquid crystal display layers respectively, and the writing tracks show the color corresponding to the liquid crystal display layers.
After the liquid crystal layer of each liquid crystal display layer receives writing pressure, different colors can be reflected under incident light, and then writing handwriting with different colors can be presented; if the writing board is controlled to present the color reflected by the liquid crystal display layer on the outermost surface (i.e. the first layer), the writing handwriting can present the color reflected by the liquid crystal display layer on the outermost surface because most of the incident light is reflected by the liquid crystal layer on the outermost surface.
Similarly, if the writing handwriting of the color capable of being reflected by the liquid crystal display layers except the first layer needs to be presented, the position of the liquid crystal display layer, which is close to the surface layer direction and is acted by the writing pressure, on the other liquid crystal display layers needs to be recognized as the local erasing position information, and the writing handwriting on the other liquid crystal display layers, which are close to the surface layer direction, of the liquid crystal display layer is directly erased by applying an electric field.
Further, when the writing on a certain liquid crystal display layer needs to be erased, according to the position of the writing, set voltages are respectively applied to the set conductive areas of the two conductive layers of the liquid crystal display layer, so that a set electric field is formed in the area to be erased, and erasing is realized.
Furthermore, each conductive area is connected with a voltage generating circuit, and the voltage generating circuit respectively applies set voltages to different conductive areas of the two conductive layers according to the erasing positioning information so as to form a set electric field in the area to be erased, thereby realizing erasing.
Further, the number of the liquid crystal display layers is two or three.
Further, still include: a local erasing position locating device; the local erasing positioning device realizes local erasing position positioning by adopting at least one mode of ultrasonic positioning, infrared positioning, image positioning or electromagnetic positioning.
Furthermore, the conducting layer at the bottommost layer of the multicolor liquid crystal writing board is opaque, and the rest conducting layers are transparent;
or,
all conducting layers on the multicolor liquid crystal writing board are transparent conducting layers, and the conducting layer at the bottommost layer on the multicolor liquid crystal writing board is arranged on an opaque substrate.
Further, a transparent insulating layer is provided between two adjacent liquid crystal display layers.
Further, for each liquid crystal display layer, a transparent insulating layer is arranged between at least one of the two conductive layers and the liquid crystal layer.
The addition of the insulating layer can better realize the mutual insulation between the two conducting layers and the liquid crystal layer and the insulation between the two liquid crystal display layers, and meanwhile, the liquid crystal layer can be protected to a certain extent, so that the service life of the writing board is prolonged.
At least one of the conductive layers except the conductive layer at the bottom layer of the multicolor liquid crystal writing board is arranged on the transparent substrate layer. Increase the stratum basale and can play fine bearing effect to the conducting layer, the holistic stability of the writing board structure of being convenient for.
Further, still include: the handwriting storage unit is used for directly recording and storing writing track information; or converting the writing track into a standard character and storing the standard character;
further, the air conditioner is provided with a fan,
further comprising: and the communication unit is used for communicating with the external equipment and transmitting the writing track information or the standard characters to the external equipment.
Compared with the prior art, the beneficial effects of the utility model are that:
the writing board of this scheme can show the handwriting of different colours, and the demonstration of colour does not receive the influence of writing the position. The shortcoming that the conventional writing equipment can only display a single color is overcome, the annotations with different colors can be added at any time in the writing process conveniently, and the experience degree of a user is improved.
The fields in which the present solution can be applied include: the writing board, the light energy liquid crystal writing board, the light energy large liquid crystal writing blackboard, the light energy dust-free writing board, the light energy portable blackboard, the electronic drawing board, the lcd electronic writing board, the electronic note book, the doodle board, the children writing board, the children doodle drawing board, the eraser function sketch board, the liquid crystal electronic drawing board, the color liquid crystal writing board and the like.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic diagram of a multi-color liquid crystal writing board according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a multi-color liquid crystal writing board according to an embodiment of the present invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
In order to solve the technical problem that the liquid crystal writing device in the prior art can only display a single color, the present embodiment provides a multicolor liquid crystal writing board, as shown in fig. 1, including: the first liquid crystal display layer and the second liquid crystal display layer are sequentially arranged from top to bottom in an overlapping mode; the first liquid crystal display layer includes: the first conducting layer, the first liquid crystal layer and the second conducting layer are sequentially arranged from top to bottom; the first conducting layer and the second conducting layer are respectively divided into two or more conducting areas, and each conducting area is connected with a voltage generating circuit; the second liquid crystal display layer includes: a third conductive layer, a second liquid crystal layer and a fourth conductive layer which are sequentially arranged from top to bottom. The third conducting layer and the fourth conducting layer are respectively divided into two or more conducting areas, and each conducting area is connected with a voltage generating circuit;
the voltage generating circuit can apply set voltages to different conductive areas on the conductive layer respectively so as to form an electric field with a set size in the liquid crystal layer between the two set conductive areas, and the size of the electric field is enough to erase the handwriting in the area on the writing board.
The voltage generation circuit in the present embodiment may employ a multi-voltage output circuit in the prior patent with patent application No. 2018105954669; of course, other circuit forms known to those skilled in the art may be used.
The liquid crystal materials of the first liquid crystal layer and the second liquid crystal layer are bistable liquid crystal materials, after the bistable liquid crystal materials receive writing pressure, the liquid crystal texture is changed from a focal conic texture to a plane texture, and writing handwriting can be displayed on a writing board under the condition of incident light; if the writing is not wanted to be displayed or erased, only an electric field with a set size needs to be generated on the liquid crystal layer, at the moment, the liquid crystal texture is changed from a plane texture to a focal conic texture, and the writing cannot be displayed.
The first liquid crystal layer and the second liquid crystal layer can respectively reflect different colors, in the embodiment, the first liquid crystal layer can reflect red, and the second liquid crystal layer can reflect green;
in some other embodiments, the multicolor liquid crystal writing pad further comprises: a local erasing position locating device; the local erasing positioning device can realize local erasing position positioning in at least one mode of ultrasonic positioning, infrared positioning, image positioning or electromagnetic positioning.
Under the condition that no voltage is applied to the first liquid crystal display layer and the second liquid crystal display layer, after receiving writing pressure, the liquid crystal textures of the first liquid crystal display layer and the second liquid crystal display layer are changed, but the writing handwriting is red reflected by the liquid crystal layer of the first liquid crystal display layer in consideration of that most of incident light is reflected by the first liquid crystal layer.
Or respectively applying set voltages to set conductive areas of the two conductive layers on the second liquid crystal display layer according to the position acted by the writing pressure, determining local erasing position positioning information according to the position acted by the writing pressure, directly erasing the writing in the second liquid crystal display layer, and still displaying the writing in red.
When the green writing is required to be displayed, the position acted by the writing pressure is recognized as the position positioning information of the local erasing position, the set voltage is respectively applied to the set conductive areas of the two conductive layers on the first liquid crystal display layer according to the position acted by the writing pressure, the writing handwriting is directly erased in the first liquid crystal display layer, and the writing handwriting can be in green reflected by the liquid crystal layer of the second liquid crystal display layer.
Based on the working principle, when the multicolor liquid crystal writing board is used for writing normally, set voltages are respectively applied to the set conductive areas of the two conductive layers on the first liquid crystal display layer according to the position acted by writing pressure, no voltage is applied to the second liquid crystal display layer, and at the moment, the writing track presents green reflected by the second liquid crystal display layer.
When the annotations need to be added, no voltage is applied to the first liquid crystal display layer, and the writing track presents red reflected by the first liquid crystal display layer.
When only the added red annotation information needs to be erased, erasing positioning information is sent to the voltage generating circuit in an eraser positioning mode or other positioning modes, the voltage generating circuit on the first liquid crystal display layer applies set voltage to the set conductive area according to the obtained erasing positioning information, and partial erasing or complete erasing of the handwriting on the first liquid crystal display layer is achieved; alternatively, voltage is applied to the entire region of the first liquid crystal display layer, and one-key erasing is realized.
When only green writing is required to be erased, erasing positioning information is sent to a voltage generating circuit on the multicolor liquid crystal writing board by adopting an erasing positioning mode or other positioning modes, and the voltage generating circuit of the second liquid crystal display layer applies set voltage to a set conductive area according to the obtained erasing positioning information to realize the local erasing or the complete erasing of the writing on the second liquid crystal display layer; alternatively, voltage is directly applied to the entire area of the second liquid crystal display layer, and one-key erasing is realized.
When the red handwriting and the green handwriting need to be erased, erasing positioning information is sent to a voltage generating circuit on the multicolor liquid crystal writing board by adopting an erasing positioning mode or other positioning modes, and the voltage generating circuits of the first liquid crystal display layer and the second liquid crystal display layer apply set voltages to set conductive areas of the first liquid crystal display layer and the second liquid crystal display layer according to the obtained erasing positioning information so as to realize the local erasing or the complete erasing of the handwriting on the first liquid crystal display layer and the second liquid crystal display layer; or, voltage is directly applied to all the areas of the first liquid crystal display layer and the second liquid crystal display layer, and one-key erasing is realized.
In some embodiments, the writing board is provided with a key for controlling the first voltage generating circuit and the second voltage generating circuit to be switched on and off, and the first voltage generating circuit and the second voltage generating circuit can be switched on and off at any time;
in some other embodiments, the multicolor liquid crystal writing pad further comprises: the writing pen is provided with a key for controlling the connection and disconnection of the first voltage generating circuit and the second voltage generating circuit, and the writing pen is in wired or wireless communication with a control device on the multicolor liquid crystal writing board so as to control the connection and disconnection of the first voltage generating circuit and the second voltage generating circuit.
By adopting the mode, the writing pen can write and can send signals to control the formation of the erasing electric field on the first liquid crystal display layer and the second liquid crystal display layer, so that the connection of the first voltage generating circuit and the second voltage generating circuit can be switched at any time according to the required displayed handwriting color, and the time and the labor are saved.
In some embodiments, the first conductive layer, the second conductive layer, and the third conductive layer are all transparent conductive films, and the fourth conductive layer is an opaque conductive film;
in some other embodiments, the first conductive layer, the second conductive layer, the third conductive layer, and the fourth conductive layer are all transparent conductive films, and the fourth conductive layer is disposed on an opaque substrate.
It should be noted that the first liquid crystal display layer and the second liquid crystal display layer may share one of the conductive layers, that is, the second conductive layer and the third conductive layer may be separately disposed, or may share the same conductive layer.
In still other embodiments, a transparent insulating layer is provided between the first liquid crystal display layer and the second liquid crystal display layer; a transparent insulating layer is arranged between at least one of the first conductive layer and the second conductive layer and the first liquid crystal layer; a transparent insulating layer is arranged between at least one of the third conductive layer and the fourth conductive layer and the second liquid crystal layer; the addition of the insulating layer can better realize the mutual insulation between the two conducting layers and the liquid crystal layer and the insulation between the two liquid crystal display layers, and meanwhile, the liquid crystal layer can be protected to a certain extent, so that the service life of the writing board is prolonged.
In other embodiments, at least one of the first conductive layer, the second conductive layer, and the third conductive layer is disposed on a transparent substrate layer. Increase the stratum basale and can play fine bearing effect to the conducting layer, the stability of the writing board structure of being convenient for.
In some other embodiments, the multicolor liquid crystal writing pad further comprises: the handwriting storage unit is used for directly recording and storing writing track information; alternatively, the writing trajectory is converted into a standard character and stored.
For example, when writing, the position of pressure action is calculated by sensing writing pressure, and writing handwriting is formed and stored according to the pressure position; or converting the handwriting into standard characters for storage.
In some other embodiments, the multicolor liquid crystal writing pad further comprises: and the communication unit is communicated with the external equipment in a wired or wireless communication mode and transmits the writing track information or the standard characters to the external equipment. The external device may be a mobile terminal such as a mobile phone or PAD, or may be a PC or other device terminal as will occur to those skilled in the art.
The multicolor liquid crystal writing board of the embodiment can be used as a light energy writing board, a light energy liquid crystal writing board, a light energy large liquid crystal writing blackboard, a light energy dust-free writing board, a light energy portable blackboard, an electronic drawing board, an lcd electronic writing board, an electronic note book, a doodle board, a children writing board, a children doodle drawing board, an eraser function sketch board, a liquid crystal electronic drawing board or other related products which can be known by a person skilled in the art.
Example two
In order to solve the technical problem that the liquid crystal writing device in the prior art can only display a single color, the present embodiment provides a multicolor liquid crystal writing board, as shown in fig. 2, including: the liquid crystal display device comprises a first liquid crystal display layer, a second liquid crystal display layer and a third liquid crystal display layer which are sequentially arranged from top to bottom in a superposed manner;
the first liquid crystal display layer includes: the first conducting layer, the first liquid crystal layer and the second conducting layer are sequentially arranged from top to bottom; the first conducting layer and the second conducting layer are respectively divided into two or more conducting areas, and each conducting area is connected with a voltage generating circuit;
the second liquid crystal display layer includes: the third conducting layer, the second liquid crystal layer and the fourth conducting layer are sequentially arranged from top to bottom; the third conducting layer and the fourth conducting layer are respectively divided into two or more conducting areas, and each conducting area is connected with a voltage generating circuit;
the third liquid crystal display layer includes: a fifth conducting layer, a third liquid crystal layer and a sixth conducting layer which are sequentially arranged from top to bottom. The fifth conducting layer and the sixth conducting layer are respectively divided into two or more conducting areas, and each conducting area is connected with a voltage generating circuit;
the voltage generating circuit can apply set voltages to different conductive areas on the conductive layer respectively so as to form an electric field with a set size in the liquid crystal layer between the two set conductive areas, and the size of the electric field is enough to erase the handwriting in the area on the writing board.
The voltage generation circuit in the present embodiment may employ a multi-voltage output circuit in the prior patent with patent application No. 2018105954669; of course, other circuit forms known to those skilled in the art may be used.
The liquid crystal materials of the first liquid crystal layer, the second liquid crystal layer and the third liquid crystal layer are the same as those in the first embodiment, and are not described again.
The first liquid crystal layer, the second liquid crystal layer and the third liquid crystal layer can reflect different colors respectively, and in the embodiment, the first liquid crystal layer can reflect red, the second liquid crystal layer can reflect green and the third liquid crystal layer can reflect yellow.
In some other embodiments, the multicolor liquid crystal writing pad further comprises: a local erasing position locating device; the local erasing positioning device can realize local erasing position positioning in at least one mode of ultrasonic positioning, infrared positioning, image positioning or electromagnetic positioning. Under the condition that no voltage is applied to the first liquid crystal display layer, the second liquid crystal display layer and the third liquid crystal display layer, after the writing pressure is received, the liquid crystal textures of the first liquid crystal display layer, the second liquid crystal display layer and the third liquid crystal display layer can be changed, but the fact that most of incident light can be reflected by the first liquid crystal layer is considered, and therefore writing handwriting can be red reflected by the liquid crystal layer of the first liquid crystal display layer.
Or determining erasing position information according to the position acted by the writing pressure, respectively applying set voltages to set conductive areas of two conductive layers on the second liquid crystal display layer and the third liquid crystal display layer, and directly erasing the writing in the second liquid crystal display layer and the third liquid crystal display layer, wherein the writing still appears as red writing.
When needing to show green writing, writing pressure effect's position is discerned and is erased position locating information for the part, and the position according to writing pressure effect applys the voltage of settlement respectively to the electrically conductive region of setting for of two conducting layers on the first liquid crystal display layer, writes the writing and directly is erased in first liquid crystal display layer, and the incident light is reflected by the second liquid crystal display layer, writes the writing and can present the liquid crystal layer reflective green of second liquid crystal display layer.
When green writing is required to be displayed, the position acted by writing pressure is recognized as local erasing position positioning information, set voltage is respectively applied to the set conductive areas of the two conductive layers on the first liquid crystal display layer and the second liquid crystal display layer according to the position acted by writing pressure, the writing is directly erased in the first liquid crystal display layer and the second liquid crystal display layer, incident light is reflected by the third liquid crystal display layer, and yellow reflected by a liquid crystal layer of the third liquid crystal display layer can be presented in writing.
Based on the working principle, when the multicolor liquid crystal writing board is used for writing normally, set voltages are respectively applied to the set conductive areas of the two conductive layers on the first liquid crystal display layer and the second liquid crystal display layer according to the position acted by writing pressure, no voltage is applied to the third liquid crystal display layer, and at the moment, the writing track presents yellow reflected by the third liquid crystal display layer;
when the red annotation needs to be added, no voltage is applied to the first liquid crystal display layer, and the writing track shows red reflected by the first liquid crystal display layer.
Similarly, when a green annotation needs to be added, the first liquid crystal display layer applies voltage, the second liquid crystal display layer does not apply voltage, and at the moment, the writing track presents green reflected by the second liquid crystal display layer.
When only red writing is required to be erased, erasing positioning information is sent to a voltage generating circuit on the multicolor liquid crystal writing board by adopting an erasing positioning mode or other positioning modes, and the voltage generating circuit applies set voltage to a set conductive area of the first liquid crystal display layer according to the obtained erasing positioning information to realize the partial erasing or the complete erasing of the writing on the first liquid crystal display layer; alternatively, voltage is directly applied to all regions of the first liquid crystal display layer, and one-key erasing is realized.
When only green writing is required to be erased, erasing positioning information is sent to a voltage generating circuit on the multicolor liquid crystal writing board by adopting an erasing positioning mode or other positioning modes, and the voltage generating circuit applies set voltage to a set conductive area on the second liquid crystal display layer according to the obtained erasing positioning information to realize the local erasing or the complete erasing of the writing on the second liquid crystal display layer; or, the voltage is directly applied to all areas of the second liquid crystal display layer, and one-key erasing is realized.
Similarly, when only yellow writing is required to be erased, erasing positioning information is sent to a voltage generating circuit on the multicolor liquid crystal writing board by adopting an erasing positioning mode or other positioning modes, and the voltage generating circuit applies set voltage to a set conductive area on the third liquid crystal display layer according to the obtained erasing positioning information to realize the partial erasing or the complete erasing of the writing on the third liquid crystal display layer; alternatively, voltage is directly applied to all regions of the third liquid crystal display layer, and one-key erasing is realized.
Similarly, when the red handwriting and the green handwriting need to be erased, a set voltage is applied to the set conductive areas on the first liquid crystal display layer and the second liquid crystal display layer according to the erasing position information, so that the partial erasing or the complete erasing of the handwriting on the first liquid crystal display layer and the second liquid crystal display layer is realized; or, voltage is directly applied to all areas of the first liquid crystal display layer and the second liquid crystal display layer, and one-key erasing is achieved.
The same principle is applied when all written characters need to be erased, and voltage is applied to all liquid crystal display layers.
In some embodiments, the writing board is provided with a key for controlling the first voltage generating circuit, the second voltage generating circuit and the third voltage generating circuit to be switched on and off, and the first voltage generating circuit, the second voltage generating circuit or the third voltage generating circuit can be switched on and off at any time;
in some other embodiments, the multicolor liquid crystal writing pad further comprises: the writing pen is provided with a key for controlling the connection and disconnection of the first voltage generating circuit, the second voltage generating circuit and the third voltage generating circuit, and the writing pen is in wired or wireless communication with a control device on the multicolor liquid crystal writing board so as to control the connection and disconnection of the first voltage generating circuit, the second voltage generating circuit and the third voltage generating circuit.
By adopting the mode, the writing pen can write and can control the formation of the erasing electric field on each liquid crystal display layer, so that the connection of the first voltage generating circuit, the second voltage generating circuit and the third voltage generating circuit can be switched at any time according to the required displayed handwriting color, and the time and the labor are saved.
In some embodiments, the first conductive layer, the second conductive layer, the third conductive layer, the fourth conductive layer, and the fifth conductive layer are all transparent conductive films, and the sixth conductive layer is an opaque conductive film;
in some other embodiments, the first to sixth conductive layers are all transparent conductive films, and the sixth conductive layer is disposed on an opaque substrate.
It should be noted that the first liquid crystal display layer and the second liquid crystal display layer may share one conductive layer, that is, the second conductive layer and the third conductive layer may be separately provided, or may share the same conductive layer. Similarly, the second liquid crystal display layer and the third liquid crystal display layer may share one conductive layer.
In still other embodiments, transparent insulating layers are respectively disposed between the first liquid crystal display layer, the second liquid crystal display layer, and the third liquid crystal display layer; a transparent insulating layer is arranged between at least one of the first conductive layer and the second conductive layer and the first liquid crystal layer; a transparent insulating layer is arranged between at least one of the third conductive layer and the fourth conductive layer and the second liquid crystal layer; set up transparent insulating layer between at least one in fifth conducting layer and the sixth conducting layer and the third liquid crystal layer and increase the insulating layer and can realize the mutual insulation of two conducting layers and liquid crystal layer and the insulation between two liquid crystal display layers better, can play certain guard action to the liquid crystal layer simultaneously, extension clipboard life.
In some further embodiments, at least one of the first conductive layer, the second conductive layer, the third conductive layer, the fourth conductive layer, and the fifth conductive layer is disposed on a transparent substrate layer. Increase the stratum basale and can play fine bearing effect to the conducting layer, the holistic stability of the writing board structure of being convenient for.
In some other embodiments, the multicolor liquid crystal writing pad further comprises: the handwriting storage unit is used for directly recording and storing writing track information; alternatively, the writing trajectory is converted into a standard character and stored.
For example, when writing, the position of pressure action is calculated by sensing writing pressure, and writing handwriting is formed and stored according to the pressure position; or converting the handwriting into standard characters for storage.
In some other embodiments, the multicolor liquid crystal writing pad further comprises: and the communication unit is communicated with the external equipment in a wired or wireless communication mode and transmits the writing track information or the standard characters to the external equipment. The external device may be a mobile terminal such as a mobile phone or PAD, or may be a PC or other device terminal as will occur to those skilled in the art.
The multicolor liquid crystal writing board of the embodiment can be used as a light energy writing board, a light energy liquid crystal writing board, a light energy large liquid crystal writing blackboard, a light energy dust-free writing board, a light energy portable blackboard, an electronic drawing board, an lcd electronic writing board, an electronic note book, a doodle board, a children writing board, a children doodle drawing board, an eraser function sketch board, a liquid crystal electronic drawing board or other related products which can be known by a person skilled in the art.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A multicolor liquid crystal writing board, comprising: the liquid crystal display device comprises at least two liquid crystal display layers which are sequentially arranged, wherein each liquid crystal display layer comprises two conducting layers and a liquid crystal layer arranged between the two conducting layers, and the two conducting layers are respectively divided into two or more conducting areas; the liquid crystal layer of each liquid crystal display layer is capable of reflecting a different color.
2. The multicolor liquid crystal writing board according to claim 1, wherein a control signal for making writing handwriting display a color corresponding to a certain liquid crystal display layer is applied to the liquid crystal writing board, other liquid crystal display layers of which the position where writing pressure acts in the direction of the liquid crystal display layer close to the surface layer are all recognized as local erasing positioning information, and writing tracks on the liquid crystal display layers are directly erased by applying set voltages to the set conductive areas of the other liquid crystal display layers respectively, and the writing tracks show the color corresponding to the liquid crystal display layer.
3. The multi-color liquid crystal writing board according to claim 1, wherein when the writing on a liquid crystal display layer needs to be erased, a set voltage is applied to the set conductive areas of the two conductive layers of the liquid crystal display layer according to the position of the writing, so as to form a set electric field in the area to be erased, thereby implementing the erasing.
4. The multi-color liquid crystal writing board according to claim 1, wherein each conductive area is connected to a voltage generating circuit, and the voltage generating circuit applies a set voltage to the set conductive areas of the two conductive layers according to the erasing positioning information, so as to form a set electric field in the area to be erased, thereby realizing erasing.
5. The multicolor liquid crystal writing board according to claim 1, wherein said liquid crystal display layers are two or three.
6. The multicolor liquid crystal writing board according to claim 1, further comprising: a local erasing position locating device; the local erasing positioning device realizes local erasing position positioning by adopting at least one mode of ultrasonic positioning, infrared positioning, image positioning or electromagnetic positioning.
7. The multicolor liquid crystal writing board according to claim 1, wherein the conductive layer of the bottom layer of said multicolor liquid crystal writing board is opaque, and the other conductive layers are transparent;
or,
all conducting layers on the multicolor liquid crystal writing board are transparent conducting layers, and the conducting layer at the bottommost layer on the multicolor liquid crystal writing board is arranged on an opaque substrate.
8. The multicolor liquid crystal writing board according to claim 1, wherein a transparent insulating layer is provided between two adjacent liquid crystal display layers.
9. The multicolor liquid crystal writing board according to claim 1, wherein for each liquid crystal display layer, a transparent insulating layer is provided between at least one of the two conductive layers and the liquid crystal layer.
10. The multicolor liquid crystal writing board according to claim 1, further comprising: the handwriting storage unit is used for directly recording and storing writing track information; or converting the writing track into a standard character and storing the standard character;
further, the air conditioner is provided with a fan,
further comprising: and the communication unit is used for communicating with the external equipment and transmitting the writing track information or the standard characters to the external equipment.
CN201822010074.XU 2018-11-30 2018-11-30 A kind of multi-color LCD clipboard Active CN209167758U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110147019A (en) * 2018-11-30 2019-08-20 山东蓝贝思特教装集团股份有限公司 A kind of multi-color LCD clipboard
CN111352537A (en) * 2019-10-31 2020-06-30 山东蓝贝思特教装集团股份有限公司 Local erasing voltage loading control method for liquid crystal writing film
CN111676027A (en) * 2020-06-12 2020-09-18 西京学院 Liquid crystal material, film, preparation method of film and liquid crystal writing board

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110147019A (en) * 2018-11-30 2019-08-20 山东蓝贝思特教装集团股份有限公司 A kind of multi-color LCD clipboard
CN111352537A (en) * 2019-10-31 2020-06-30 山东蓝贝思特教装集团股份有限公司 Local erasing voltage loading control method for liquid crystal writing film
CN111352537B (en) * 2019-10-31 2021-07-16 山东蓝贝思特教装集团股份有限公司 Local erasing voltage loading control method for liquid crystal writing film
CN111676027A (en) * 2020-06-12 2020-09-18 西京学院 Liquid crystal material, film, preparation method of film and liquid crystal writing board
CN111676027B (en) * 2020-06-12 2024-01-23 西京学院 Liquid crystal material, film, preparation method of film and liquid crystal writing board

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