CN107728398A - Liquid crystal board system and its method for deleting - Google Patents
Liquid crystal board system and its method for deleting Download PDFInfo
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- CN107728398A CN107728398A CN201711072442.7A CN201711072442A CN107728398A CN 107728398 A CN107728398 A CN 107728398A CN 201711072442 A CN201711072442 A CN 201711072442A CN 107728398 A CN107728398 A CN 107728398A
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- liquid crystal
- crystal board
- selective erase
- driving voltage
- drive circuit
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
Abstract
Present invention is disclosed liquid crystal board system and its method for deleting, wherein, liquid crystal board system, including：Liquid crystal board body, selective erase drive circuit；The selective erase drive circuit is electrically connected with the liquid crystal board body, and the first driving voltage of selective erase is realized to provide combination in the external force that region is wiped on liquid crystal board；First driving voltage is less than the liquid crystal cut-in voltage of the liquid crystal board body.The liquid crystal board system of the present invention passes through the external selective erase drive circuit on available liquid crystal board, to produce the driving voltage of selective erase, and combine ad hoc soft erasing part and wipe the suitable pressure of regional area generation, the anchorage force of the cholesteric liquid crystal of the liquid crystal display layer corresponding to regional area is set to change jointly, cholesteric liquid crystal is set to be changed into burnt wimble structure from planar structure, the regional area written contents in liquid crystal board system display are made to disappear, accurately to realize selective erase.
Description
Technical field
The present invention relates to liquid crystal writing plate field, liquid crystal board system and its method for deleting are especially related to.
Background technology
Available liquid crystal board is realized in display and/or erasing liquid crystal board by the bistable characteristic of cholesteric liquid crystal
Written contents.Cholesteric liquid crystal molecule is in flat, layered arrangement, and molecule is parallel to each other in layer, and molecular long axis is parallel to layer
Plane, the molecular long axis direction of different layers are varied slightly, and helicoidal structure is arranged in along the normal direction of layer.Cholesteric liquid crystal
Pitch changes with temperature, application electric field, magnetic field, pressure etc., the different structure shape of the corresponding cholesteric liquid crystal of change of pitch
State, so that different dispaly states is presented in cholesteric liquid crystal.For example under obstructed electricity condition, lettering pen acts on liquid crystal and write
Pressure on plate makes the cholesteric liquid crystal of liquid crystal board corresponding region that planar structure be presented, and reflection selective to visible ray is made
With to record the writing pressure trajectories of lettering pen, and then written contents corresponding to display；After energization, the pitch of cholesteric liquid crystal
Changed in the presence of electric field is applied, cholesteric liquid crystal is changed into burnt wimble structure from planar structure, on liquid crystal board
Lettering pen writing pressure trajectories disappear to realize erasing, but the composition structure of available liquid crystal board can only realize full frame overall wiping
Remove, it is impossible to meet the needs of selective erase.It is existing to form structure by changing liquid crystal board to meet the needs of selective erase,
But performance is not so good as the composition Stability Analysis of Structures of available liquid crystal board.
Therefore, prior art could be improved.
The content of the invention
The main object of the present invention is a kind of liquid crystal board system of offer, it is intended to solves available liquid crystal writing board structure hardly possible
To realize the technical problem of accurate erasing regional area written contents.
The present invention proposes a kind of liquid crystal board system, including：Liquid crystal board body, selective erase drive circuit；
The selective erase drive circuit electrically connects with the liquid crystal board body, is write with providing combination in liquid crystal
The external force that region is wiped on letter stencil realizes the first driving voltage of selective erase；First driving voltage is write less than the liquid crystal
The liquid crystal cut-in voltage of letter stencil body.
Preferably, first drive voltage range includes：In liquid crystal board body the 20% of liquid crystal cut-in voltage to
50%.
Preferably, in addition to the selective erase part that is arranged on outside the liquid crystal board body；The selective erase
Part acts on regional area to be erased on the liquid crystal board body to produce required specified pressure with specified pressure, with
First driving voltage is cooperateed with to remove the written contents of the regional area.
Preferably, the selective erase part includes soft erasing part, and the shore hardness scope of the soft erasing part is 0
To 100A；The soft erasing part includes：Rubber eraser is except part, sponge brush are except one kind in part, soft fibre erasing part.
Preferably, the scope of the specified pressure P is：0 ＜ P≤980KPa.
Preferably, the liquid crystal board body is arranged flexible parent metal writing layer, transparency conducting layer, cholesteric phase from top to bottom
Liquid crystal layer, conductive layer and substrate reflectance layer；
The flexible parent metal writing layer receives the pressure vestige of writing, and is transmitted by the transparency conducting layer to cholesteric phase
Liquid crystal layer, cholesteric liquid crystal is caused to show the pressure vestige of the writing under the setting off of the substrate reflectance layer；
Described selective erase drive circuit one end connects the transparency conducting layer, and the other end connects the conductive layer, with
The both ends of the cholesteric crystal layer apply first driving voltage.
Preferably, the selective erase drive circuit includes the first driving voltage power supply, selective erase drive circuit switchs；
After the first driving voltage power supply is connected in series with selective erase drive circuit switch, described in the connection of one end
Transparency conducting layer, the other end connect the conductive layer.
Preferably, the liquid crystal board system, in addition to all erasing drive circuits, all erasing drive circuits
It is connected in parallel with the selective erase drive circuit；All erasings drive circuit includes the second driving voltage power supply, whole
Wipe drive circuit switch；
After the second driving voltage power supply is connected in series with all erasings drive circuit switch, one end is in connection institute
State and the selective erase drive circuit is incorporated at transparency conducting layer, the other end is incorporated to the local wiping at the connection conductive layer
Except drive circuit.
Present invention also offers a kind of method for deleting of liquid crystal board system, including above-mentioned liquid crystal board system,
Including：
First driving voltage for meeting erasing regional area is provided；First driving voltage, which is less than, wipes whole areas
Second driving voltage in domain；
Under first driving voltage, the regional area is wiped, pressure is specified so as to be produced at the regional area,
To wipe the written contents of the regional area.
Preferably, under first driving voltage, the regional area is wiped, is referred to so as to be produced at the regional area
Level pressure is strong, the step of to wipe the written contents of the regional area after, including：
Second driving voltage for meeting erasing Zone Full is provided, to wipe the written contents of the Zone Full.
Advantageous effects of the present invention：The liquid crystal board system of the present invention passes through the external office on available liquid crystal board
Drive circuit is wiped in portion, to produce the driving voltage of selective erase, and is combined ad hoc soft erasing part and is wiped regional area production
Raw suitable pressure, makes the anchorage force of the cholesteric liquid crystal of the liquid crystal display layer corresponding to regional area change, makes jointly
Cholesteric liquid crystal is changed into burnt wimble structure from planar structure, the regional area written contents in liquid crystal board system display is disappeared
Lose, accurately to realize selective erase.The selective erase of the present invention is designed to the existing liquid crystal board that can not realize selective erase
With great use value and economic implications.Liquid crystal board system provided by the invention has selective erase function and complete simultaneously
Function is wiped in portion, and user can all erasing switch or selective erase switch as desired by selection, realize liquid crystal board system
The selective erase function of system all wipes function, and liquid crystal board system of the invention can meet partial revision, part simultaneously
The needs of deletion and the needs all wiped, the operating efficiency and usage experience of user are further increased, improve liquid crystal
The commercial value of board system.
Brief description of the drawings
The structural representation of the liquid crystal board system of Fig. 1 one embodiment of the invention；
The first drive voltage range curve map of regional area is wiped in Fig. 2 one embodiment of the invention；
The structural representation of the liquid crystal board system of Fig. 3 another embodiment of the present invention；
The schematic flow sheet of the method for deleting of the liquid crystal board system of Fig. 4 one embodiment of the invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 1, the liquid crystal board system of one embodiment of the invention, including：Liquid crystal board body 1, selective erase
Drive circuit 2 and the selective erase part 3 being arranged on outside the liquid crystal board body 1；
The selective erase drive circuit 2 electrically connects with the liquid crystal board body 1, to provide liquid described in selective erase
First driving voltage V2 of brilliant board body 1；
Under the first driving voltage V2, the selective erase part 2 acts on the liquid crystal with specified pressure and write
Regional area to be erased is with specified pressure P needed for producing on plate body 1；
The regional area removes the office under the specified pressure P and the first driving voltage V2 collective effect
The written contents in portion region.
Liquid crystal is cholesteric liquid crystal in the embodiment of the present invention, under the effect of different voltage electric fields, the arrangement of liquid crystal molecule with
Electric field changes, and produces the difference of light transmittance, light and shade difference is produced under outside circuit function, needed for showing or wiping
Information.The liquid crystal board system of the present invention is by the external selective erase drive circuit on available liquid crystal board, to produce
The driving voltage of selective erase, and combine selective erase part 3 and regional area is wiped with convenient pressure, make LCDs jointly
Regional area corresponding to the anchorage force of cholesteric liquid crystal change, cholesteric liquid crystal is changed into burnt cone knot from planar structure
Structure, the regional area written contents in liquid crystal board system display are made to disappear, accurately to realize selective erase.
Reference picture 2, Fig. 2 be the present embodiment the opening of liquid crystal board body 1 and voltage curve map (T-V figures),
The first driving voltage V2 of the present embodiment scope includes：The 20% to 50% of liquid crystal cut-in voltage in liquid crystal board body 1.
Under relatively low voltage effect, the change activity of cholesteric liquid crystal molecule pitch is activated, and polymer is to cholesteric phase
The anchorage force of liquid crystal molecule weakens, and coordinates repeatedly to wipe under this state and pressure is specified caused by external force, accurately change regional area
Cholesteric liquid crystal molecule pitch, so as to change Liquid Crystal Molecules Alignment configuration state change, to realize selective erase.The present embodiment
Middle liquid crystal cut-in voltage refers to liquid crystal molecule from display state is presented to the magnitude of voltage entirely without display, even if cholesteric liquid crystal molecule
The magnitude of voltage of arrangement architecture change occurs, it is relevant with liquid crystal screen dimensions, the cut-in voltage scope of existing conventional liquid crystal screen dimensions
For：4V is between 40V.
Further, the selective erase part 2 of the present embodiment includes soft erasing part, and the shore of the soft erasing part is hard
It is 0 to 100A to spend scope.Further, the soft erasing part includes：Rubber eraser is except part, sponge brush are except part, soft fibre wiping
Except one kind in part.
The regional area for needing to remove, above-mentioned partial zones are repeatedly wiped using rubber, rubber or other flexible erasing parts
The anchorage force of liquid crystal molecule corresponding to domain further diminishes, and causes Liquid Crystal Molecules Alignment configuration state to change, is become by planar structure
For burnt wimble structure, the written contents of above-mentioned regional area disappear.The preferred erased by rubber part of the present embodiment, erased by rubber part and liquid crystal
The contact area size of the writing surface of board body determines the size of regional area erasing area, and accurate control, which can be achieved, to be needed to wipe
The regional area removed.
Further, the specified pressure P of the liquid crystal board system selective erase of the present embodiment scope is：0 ＜ P≤
980KPa。
The liquid crystal writing body 1 of the present embodiment can be in the state of different electricity, the pressure by lettering pen to liquid crystal molecule
Effect, you can realize that the arrangement architecture of liquid crystal molecule is changed into plane state from Focal conic state, realize the writing of smoothness；In low voltage
Under effect, pressure is excessive can not only to realize erasing regional area written contents, can also produce new written trace.0 ＜ P≤
980KPa is 1mm2On supporting power be less than equal to 100g.Preferred 1mm in the present embodiment2On supporting power be less than and be equal to
50g, it is more convenient the needs of selective erase.
Further, the liquid crystal board body 1 is arranged flexible parent metal writing layer 10, transparency conducting layer from top to bottom
11st, cholesteric crystal layer 12, conductive layer 13 and substrate reflectance layer 14；
The flexible parent metal writing layer 10 receives writing pressure vestige, and is transmitted by the transparency conducting layer 11 to cholesteric
Phase liquid crystal layer 12, cholesteric liquid crystal is caused to show the writing pressure vestige under the setting off of the substrate reflectance layer 14；
Described one end of selective erase drive circuit 2 connects the transparency conducting layer 12, and the other end connects the conductive layer 13,
To apply the first driving voltage V2 at the both ends of the cholesteric crystal layer 12.
The structure composition of the liquid crystal board body 1 of the present embodiment is conventional structure, and cholesteric crystal layer 12 includes polymerization
Thing network 120 and the cholesteric liquid crystal 121 being anchored in polymer network 120, by the way that no electricity can only be realized in existing structure
Writing display or two states of full frame erasing that are powered, can not realize the selective erase for controlling designated area exactly, not meet people
The conventional writing style of class.
Further, the selective erase drive circuit 2 includes the first driving voltage power supply 20, selective erase drive circuit
Switch 21；
The first driving voltage power supply 20 is connected in series rear one end with selective erase drive circuit switch 21 and is connected
The transparency conducting layer 12, the other end connect the conductive layer 13.
The selective erase drive circuit 2 of the present embodiment includes the first independent driving voltage power supply 20, selective erase drives
Contactor 21；When needing local remove, conducting selective erase drive circuit switch 21, the first driving voltage power supply 20 provides
Low-voltage V2 acts on the upper and lower conductive layers of liquid crystal board body 1, to reduce the liquid crystal for the written portion for needing selective erase
Molecule anchorage force, usual V2 voltage are the 20%-50% of liquid crystal cut-in voltage in liquid crystal board body 1.In the present embodiment
It is preferred that the 30% of liquid crystal cut-in voltage is selective erase operating voltage.Selective erase drive circuit 2 in other embodiments of the invention
Also include partial pressure device, accurately to control the output voltage range of selective erase drive circuit 2.
Reference picture 3, the liquid crystal board system of another embodiment of the present invention, in addition to all erasing drive circuits 4, it is described
All erasing drive circuit 4 is connected in parallel with the selective erase drive circuit 2；All erasings drive circuit 4 includes the
Two driving voltage power supplys 40, all erasing drive circuit switch 41；
After the second driving voltage power supply 40 is connected in series with all erasings drive circuit switch 41, one end is even
Connect and the selective erase drive circuit is incorporated at the transparency conducting layer, the other end is incorporated to the office at the connection conductive layer
Wipe drive circuit in portion.
The liquid crystal board body 1 of the present embodiment can be switched after normal writing by triggering all erasing drive circuits
41, so that the second driving voltage power supply 40 exports erasing high voltage V1 to liquid crystal board body 1, high voltage pulse acts on liquid
After the upper and lower conductive layers of brilliant board body 1, the cholesteric liquid crystal molecule in all liquid crystal board bodies 1 is by display state
Planar structure arrangement changes after excessive state arrives the burnt wimble structure arrangement without display state, and whole screen written contents are eliminated, usual V1
Magnitude of voltage is that liquid crystal molecule fully opens voltage in liquid crystal board body 1.Above-mentioned planar structure is arranged as cholesteric liquid crystal
The display stable state of molecule, burnt wimble structure be arranged as cholesteric liquid crystal molecule without display stable state, transition state is unstable state, this implementation
The cholesteric liquid crystal molecule that example is realized by existing fringing field is changed into unstable transition state from display stable state, then is acted on by low pressure
Designated local region realize that cholesteric liquid crystal molecule is changed into passing through existing fringing field and low without display stable state, the present embodiment from transition state
The accurate function of realizing regional area erasing of synergy of pressure.
Reference picture 4, one embodiment of the invention additionally provide a kind of method for deleting of liquid crystal board system, including above-mentioned
Liquid crystal board system, including：
S1：The the first driving voltage V2 for meeting erasing regional area is provided, the first driving voltage V2, which is less than, to be wiped
Except the second driving voltage V1 of Zone Full.
The selective erase drive circuit 2 that the present embodiment is connected by connecting with the liquid crystal board sheet 1 provides first and driven
Dynamic voltage V2 existing fringing field effect, realizes that cholesteric liquid crystal molecule is changed into unstable transition state from display stable state.
S2：Under the first driving voltage V2, the regional area is wiped, is specified so as to be produced at the regional area
Pressure P, to wipe the written contents of the regional area.
The flexible parent metal writing layer 10 of liquid crystal board body 1 is wiped with specified pressure by the soft erasing part
Regional area, so that the regional area, which produces, specifies pressure P, realized so as to the designated local region of flexible parent metal writing layer 10
Corresponding cholesteric liquid crystal molecule is changed into without display stable state from transition state.The cholesteric of liquid crystal display layer corresponding to the regional area
Phase liquid crystal is changed into burnt wimble structure under the first driving voltage V2 and the specified pressure P collective effect from planar structure,
The written contents of the regional area disappear.The present embodiment passes through the first driving voltage V2 existing fringing field and specified pressure P association
Same-action accurately realizes the function of regional area erasing.
Further, after step S2, including：
S3：The the second driving voltage V1 for meeting erasing Zone Full is provided, to wipe the writing of the Zone Full
Content.
The all erasing drive circuits 4 being connected by connecting with the liquid crystal board body 1, realize erasing all
The written contents in region.Under the second driving voltage V1, the cholesteric of planar structure is in the liquid crystal board body 1
Phase liquid crystal is all changed into the cholesteric liquid crystal of burnt wimble structure, and all written contents of the liquid crystal board body 1 disappear.This reality
Example is applied when needing full frame erasing, full frame erasing can be realized by starting all erasing drive circuits 4, meeting the difference of user makes
With requiring, usage experience is improved.
The liquid crystal board system of the embodiment of the present invention passes through the external selective erase driving electricity on available liquid crystal board
Road, to produce the driving voltage of selective erase, and combine ad hoc soft erasing part and wipe the suitable pressure of regional area generation,
The anchorage force of the cholesteric liquid crystal of the liquid crystal display layer corresponding to regional area is changed jointly, make cholesteric liquid crystal by putting down
Face structure is changed into burnt wimble structure, the regional area written contents in liquid crystal board system display is disappeared, accurately to realize
Selective erase.The selective erase design of the embodiment of the present invention has great to the existing liquid crystal board that can not realize selective erase
Use value and economic implications.Liquid crystal board system provided by the invention has selective erase function and all erasing work(simultaneously
Can, user can all erasing switch or selective erase switch as desired by selection, realize the part of liquid crystal board system
Function or all erasing function are wiped, the liquid crystal board system of the embodiment of the present invention can meet that partial revision, part are deleted simultaneously
The needs removed and the needs all wiped, the operating efficiency and usage experience of user are further increased, improve liquid crystal and write
The commercial value of letter stencil system.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, every utilization
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (10)
- A kind of 1. liquid crystal board system, it is characterised in that including：Liquid crystal board body, selective erase drive circuit；The selective erase drive circuit electrically connects with the liquid crystal board body, to provide combination in liquid crystal board The external force in upper erasing region realizes the first driving voltage of selective erase；First driving voltage is less than the liquid crystal board The liquid crystal cut-in voltage of body.
- 2. liquid crystal board system according to claim 1, it is characterised in that first drive voltage range includes： The 20% to 50% of liquid crystal cut-in voltage in liquid crystal board body.
- 3. liquid crystal board system according to claim 1, it is characterised in that also include being arranged on the liquid crystal board Selective erase part outside body；The selective erase part is acted on the liquid crystal board body with specified pressure and treated The regional area of erasing is to produce required specified pressure, to cooperate with first driving voltage to remove the writing of the regional area Content.
- 4. liquid crystal board system according to claim 3, it is characterised in that the selective erase part includes soft wiping Except part, the shore hardness scope of the soft erasing part is 0 to 100A；The soft erasing part includes：Rubber eraser is except part, sponge Wipe one kind in part, soft fibre erasing part.
- 5. liquid crystal board system according to claim 3, it is characterised in that the scope of the specified pressure P is：0 ＜ P ≤980KPa。
- 6. liquid crystal board system according to claim 1, it is characterised in that the liquid crystal board body is from top to bottom Arrangement flexible parent metal writing layer, transparency conducting layer, cholesteric crystal layer, conductive layer and substrate reflectance layer；Described selective erase drive circuit one end connects the transparency conducting layer, and the other end connects the conductive layer, with described The both ends of cholesteric crystal layer apply first driving voltage.
- 7. liquid crystal board system according to claim 6, it is characterised in that the selective erase drive circuit includes the One driving voltage power supply, selective erase drive circuit switch；After the first driving voltage power supply is connected in series with selective erase drive circuit switch, one end connection is described transparent Conductive layer, the other end connect the conductive layer.
- 8. liquid crystal board system according to claim 7, it is characterised in that also include all erasing drive circuits, institute All erasing drive circuits are stated to be connected in parallel with the selective erase drive circuit；All erasings drive circuit includes second Driving voltage power supply, all erasing drive circuit switch；After the second driving voltage power supply is connected in series with all erasings drive circuit switch, one end is described in connection The selective erase drive circuit is incorporated at bright conductive layer, the other end is incorporated to the selective erase at the connection conductive layer and driven Dynamic circuit.
- 9. a kind of method for deleting of liquid crystal board system, it is characterised in that including the liquid any one of claim 1-8 Brilliant board system, including：First driving voltage for meeting erasing regional area is provided；First driving voltage is less than erasing Zone Full Second driving voltage；Under first driving voltage, the regional area is wiped, pressure is specified so as to be produced at the regional area, to wipe Except the written contents of the regional area.
- 10. the method for deleting of liquid crystal board system according to claim 9, it is characterised in that in the described first driving Under voltage, the regional area is wiped, pressure is specified so as to be produced at the regional area, to wipe the book of the regional area After the step of writing content, including：Second driving voltage for meeting erasing Zone Full is provided, to wipe the written contents of the Zone Full.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711072442.7A CN107728398B (en) | 2017-11-03 | 2017-11-03 | Liquid crystal writing board system and erasing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711072442.7A CN107728398B (en) | 2017-11-03 | 2017-11-03 | Liquid crystal writing board system and erasing method thereof |
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| CN107728398B CN107728398B (en) | 2023-04-11 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828821A (en) * | 2018-06-28 | 2018-11-16 | 广州林登科技有限公司 | It is a kind of can selective erase liquid crystal writing device and selective erase method |
| CN108962043A (en) * | 2018-07-27 | 2018-12-07 | 上海天马微电子有限公司 | Inorganic light emitting diode display panel and display device |
| CN109856868A (en) * | 2019-03-08 | 2019-06-07 | 深圳市易快来科技股份有限公司 | Liquid crystal display device, liquid crystal display device and electronic equipment |
| CN110147171A (en) * | 2018-06-15 | 2019-08-20 | 山东蓝贝思特教装集团股份有限公司 | Liquid crystal writing film selective erase voltage generates and control method |
| CN110275360A (en) * | 2018-03-14 | 2019-09-24 | 虹彩光电股份有限公司 | Cholesterol liquid crystal clipboard |
| CN110297371A (en) * | 2018-03-21 | 2019-10-01 | 虹彩光电股份有限公司 | Cholesterol liquid crystal clipboard |
| CN110703527A (en) * | 2019-09-04 | 2020-01-17 | 陈华丰 | Liquid crystal display device and erasing method thereof |
| CN110727137A (en) * | 2019-11-01 | 2020-01-24 | 重庆洋逸乐科技有限公司 | Message board and message wall capable of being repeatedly used |
| WO2020052455A1 (en) * | 2018-09-10 | 2020-03-19 | Smart Liquid Crystal Technologies Co., Ltd. | Selectively erasing device and writing-erasing pen for liquid crystal writing board |
| 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 |
| WO2020200164A1 (en) * | 2019-04-03 | 2020-10-08 | Smart Liquid Crystal Technologies Co., Ltd. | A selectively erasable liquid crystal writing board |
| CN113076052A (en) * | 2021-04-01 | 2021-07-06 | 深圳市宝立创科技有限公司 | Local erasing method and system for liquid crystal writing board |
| CN113391493A (en) * | 2021-07-07 | 2021-09-14 | 南京邮电大学 | Wide-viewing-angle bistable liquid crystal erasable display device and display method thereof |
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| WO2020052455A1 (en) * | 2018-09-10 | 2020-03-19 | Smart Liquid Crystal Technologies Co., Ltd. | Selectively erasing device and writing-erasing pen for liquid crystal writing board |
| CN109856868A (en) * | 2019-03-08 | 2019-06-07 | 深圳市易快来科技股份有限公司 | Liquid crystal display device, liquid crystal display device and electronic equipment |
| WO2020200164A1 (en) * | 2019-04-03 | 2020-10-08 | Smart Liquid Crystal Technologies Co., Ltd. | A selectively erasable liquid crystal writing board |
| CN110703527A (en) * | 2019-09-04 | 2020-01-17 | 陈华丰 | Liquid crystal display device and erasing method thereof |
| 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 |
| CN110727137A (en) * | 2019-11-01 | 2020-01-24 | 重庆洋逸乐科技有限公司 | Message board and message wall capable of being repeatedly used |
| CN113076052A (en) * | 2021-04-01 | 2021-07-06 | 深圳市宝立创科技有限公司 | Local erasing method and system for liquid crystal writing board |
| CN113391493A (en) * | 2021-07-07 | 2021-09-14 | 南京邮电大学 | Wide-viewing-angle bistable liquid crystal erasable display device and display method thereof |
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Denomination of invention: LCD Writing Pad System and Its Erasing Method Effective date of registration: 20230524 Granted publication date: 20230411 Pledgee: Bank of Jiangsu Limited by Share Ltd. Shenzhen branch Pledgor: HOWEASY BOARD (SHENZHEN) TECHNOLOGY CO.,LTD. Registration number: Y2023980041608 |