CN209433153U - It is a kind of can selective erase liquid crystal blackboard - Google Patents
It is a kind of can selective erase liquid crystal blackboard Download PDFInfo
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- CN209433153U CN209433153U CN201920174012.4U CN201920174012U CN209433153U CN 209433153 U CN209433153 U CN 209433153U CN 201920174012 U CN201920174012 U CN 201920174012U CN 209433153 U CN209433153 U CN 209433153U
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Abstract
The utility model discloses it is a kind of can selective erase liquid crystal blackboard, comprising: liquid crystal display layer, including display surface, the liquid crystal display layer show corresponding image according to the received pressure touch track of display surface；Identification device wipes projected position and projected outline of the part in display surface for identification, generates selective erase signal when the projected outline of the erasing part is more than preset area；Erasing circuit, for carrying out image wipe to the corresponding display surface of the projected position according to the selective erase signal.The utility model, which is realized, wipes the regional area of written contents, and other regions are not influenced then by erasing, the deficiency all wiped can only be realized by overcoming traditional technology, improve the working efficiency and usage experience of user, improve the commercial value of liquid crystal blackboard and its application apparatus.
Description
Technical field
The utility model embodiment is related to liquid crystal technology, more particularly to it is a kind of can selective erase liquid crystal blackboard.
Background technique
The only full frame erasing of the liquid crystal blackboard of the prior art, cannot local wiping portion, write on liquid crystal blackboard in very much
Rong Hou, if it find that wherein there is mistake at one, as soon as or write find after one section of formula it is intermediate there is an oeprator to wrongly write,
Content written must be all wiped, writing again could correct, this causes great inconvenience to the use of liquid crystal blackboard,
Influence the efficiency write.
Utility model content
The utility model provide it is a kind of can selective erase liquid crystal blackboard, to overcome the liquid crystal writing plate of the prior art cannot
Local wiping portion, causes liquid crystal writing writing on the blackboard to write the defect of low efficiency.
The utility model embodiment provide it is a kind of can selective erase liquid crystal blackboard, comprising:
Liquid crystal display layer, including display surface, the liquid crystal display layer is according to the received pressure touch track of display surface
Show corresponding image；
Identification device wipes projected position and projected outline of the part in display surface for identification, when the erasing part
Selective erase signal is generated when projected outline is more than preset area；
Erasing circuit, for carrying out image to the corresponding display surface of the projected position according to the selective erase signal
Erasing.
Optionally, the preset area includes the first preset area and the second preset area, and the erasing part includes first
Part and the second erasing part are wiped, the identification device first wipes part in the projected position of display surface and projection wheel for identification
Exterior feature generates selective erase signal or identification dress when the projected outline of the first erasing part is more than the first preset area
Projected position and projected outline of the second erasing part in display surface for identification is set, when the projected outline of the second erasing part
Selective erase signal is generated when more than the second preset area, first preset area is less than the second preset area, the first erasing
Size of the size of part less than the second erasing part.
Optionally, further comprise that the first erasing part places position and the second erasing part places position, be respectively used to described in receiving
First erasing part and the second erasing part.
Optionally, it is solid for adsorbing to respectively include magnetic part for the first erasing part placement position and the second erasing part placement position
The fixed first erasing part and the second erasing part.
Optionally, the first erasing part places the first light sensor of position setting, for being removed when the first erasing part
When generate first game erasing signals, the identification device sets the first default face for preset area according to first game erasing signals
Product；Second erasing part places position and the second light sensor is arranged, and wipes for generating second game when the second erasing part is removed
Signal, the identification device set the second preset area for preset area according to second game's erasing signals.
Optionally, the erasing circuit includes multiple the first electricity being spaced apart from each other for being set to liquid crystal display layer first surface
Pole item is set to multiple second electrode items being spaced apart from each other of liquid crystal display layer second surface, the first surface and the second table
The extending direction of two surfaces that face is away from each other for liquid crystal display layer, the first electrode item and second electrode item is mutually perpendicular to.
Optionally, the erasing circuit includes the first driving chip connected with the first electrode item and described second
Second driving chip of electrode strip connection, and the third chip of connection the first driving chip and the second driving chip, described the
Three chips are for generating selective erase driving signal after receiving the selective erase signal, and first driving chip is according to
Selective erase driving signal generate drive part first electrode item first partial erasing voltage, second driving chip according to
The selective erase driving signal generates the second local erasing voltage of drive part second electrode item.
It optionally, further comprise that button is wiped by office, button is wiped for generating first mode signal, the erasing electricity by the office
Operating mode is wiped according to first mode signal enabling office in road, to receive selective erase signal.
It optionally, further comprise full wiping button, for generating second mode signal, described first drives the full wiping button
Dynamic chip generates the third selective erase voltage for driving whole first electrode items according to the second mode signal, and described second drives
Dynamic chip generates the 4th selective erase voltage for driving whole second electrodes article according to the second mode signal.
The utility model, which is realized, wipes the regional area of written contents, and other regions are not influenced then by erasing, gram
The deficiency all wiped can only be realized by having taken traditional technology, improve the working efficiency and usage experience of user, improve liquid crystal
The commercial value of blackboard and its application apparatus.
Detailed description of the invention
Fig. 1 be the utility model embodiment one provide it is a kind of can selective erase liquid crystal blackboard structural schematic diagram；
Fig. 2 be the utility model embodiment one provide it is a kind of can selective erase liquid crystal blackboard structural schematic diagram；
Fig. 3 be the utility model embodiment one provide it is a kind of can selective erase liquid crystal blackboard partial circuit diagram；
Fig. 4 be the utility model embodiment one provide it is a kind of can selective erase liquid crystal blackboard partial circuit diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 be the utility model embodiment one provide it is a kind of can selective erase liquid crystal blackboard structural schematic diagram.Such as
Shown in Fig. 1, which includes:
Liquid crystal display layer 110, including display surface, the liquid crystal display layer is according to the received pressure touch rail of display surface
Mark shows corresponding image；
Identification device 120 wipes projected position and projected outline of the part in display surface, when the erasing part for identification
Projected outline be more than preset area when generate selective erase signal；
Specifically, identification device can be infrared sensor, it is set to the surrounding of liquid crystal display, by sending infrared ray
Projected position and projected outline of the erasing part in display surface are identified, when the projected outline of the erasing part is more than preset area
When generate selective erase signal.It should be understood that identification device is not limited to infrared sensor.In every case erasing part can be identified
Projected position and projected outline in display surface generate part when the projected outline of the erasing part is more than preset area and wipe
Except the object of signal, the protection scope of the utility model is both fallen within.
Erasing circuit 130, for being carried out according to the selective erase signal to the corresponding display surface of the projected position
Image wipe.The present embodiment is when wiping part when display surface is mobile, according to preset sample frequency to erasing part in display table
The projected position in face and projected outline are identified that the projected position of the erasing part identified every time and projected outline wipe as image
The foundation removed wipes the image shown in projected position and projected outline, and other regions are shown, are not wiped
It influences.
The utility model, which is realized, wipes the regional area of written contents, and other regions are not influenced then by erasing, gram
The deficiency all wiped can only be realized by having taken traditional technology, improve the working efficiency and usage experience of user, improve liquid crystal
The commercial value of blackboard and its application apparatus.
Optionally, the preset area includes the first preset area and the second preset area, and the erasing part includes first
Part and the second erasing part are wiped, the identification device first wipes part in the projected position of display surface and projection wheel for identification
Exterior feature generates selective erase signal or identification dress when the projected outline of the first erasing part is more than the first preset area
Projected position and projected outline of the second erasing part in display surface for identification is set, when the projected outline of the second erasing part
Selective erase signal is generated when more than the second preset area, first preset area is less than the second preset area, the first erasing
Size of the size of part less than the second erasing part.
Specifically, the liquid crystal blackboard of the utility model embodiment can also include two erasing parts of different sizes, it is similar
In the blackboard eraser of normal blackboard.Part is wiped when wiping liquid crystal blackboard, identification device can identify erasing part in the throwing of display surface
Shadow position and projected outline generate selective erase signal when the projected outline of the erasing part is more than preset area；
Optionally, liquid crystal blackboard further comprises that the first erasing part places position and the second erasing part places position, is respectively used to
Accommodate the first erasing part and the second erasing part.
Specifically, the first erasing part places position and the second erasing part placement position can be with the surrounding of liquid crystal blackboard or side, both
It can be set together, also can be set on both sides of liquid crystal blackboard etc..It should be understood that the utility model does not limit first
Wipe the specific location that part places position and the second erasing part places position.
Optionally, it is solid for adsorbing to respectively include magnetic part for the first erasing part placement position and the second erasing part placement position
The fixed first erasing part and the second erasing part.
Specifically, for how to place erasing part, the utility model by the way of magnetic absorption, by the first erasing part and
Second erasing part is adsorbed on the first erasing part respectively and places position and the second erasing part placement position.
Optionally, the first erasing part places the first light sensor of position setting, for being removed when the first erasing part
When generate first game erasing signals, the identification device sets the first default face for preset area according to first game erasing signals
Product；Second erasing part places position and the second light sensor is arranged, and wipes for generating second game when the second erasing part is removed
Signal, the identification device set the second preset area for preset area according to second game's erasing signals.
Specifically, the first erasing part places position and the first light sensor is arranged, for when the first erasing part is removed
First game erasing signals are generated, identification device sets the first preset area for preset area according to first game erasing signals, and is used for
Projected position and projected outline of the identification erasing part in display surface, when the projected outline of the erasing part is more than the first default face
Selective erase signal is generated when product；Erasing circuit is corresponding to the first erasing part projected position according to the selective erase signal
Display surface carry out image wipe.
Second erasing part places position and the second light sensor is arranged, for generating second when the second erasing part is removed
Office's erasing signals, the identification device set the second preset area for preset area according to second game's erasing signals, and for identification
Projected position and projected outline of the part in display surface are wiped, when the projected outline of the erasing part is more than the first preset area
Generate selective erase signal；Erasing circuit is corresponding according to projected position of the selective erase signal to the second erasing part
Display surface carries out image wipe.
Optionally, the erasing circuit includes multiple the first electricity being spaced apart from each other for being set to liquid crystal display layer first surface
Pole item is set to multiple second electrode items being spaced apart from each other of liquid crystal display layer second surface, the first surface and the second table
The extending direction of two surfaces that face is away from each other for liquid crystal display layer, the first electrode item and second electrode item is mutually perpendicular to.
Specifically, as shown in Fig. 2, erasing circuit include multiple first electrode items 11 being spaced apart from each other, liquid crystal display layer 12,
Multiple second electrode items 13 being spaced apart from each other.First electrode item 11 is set to the first surface of liquid crystal display layer 12, second electrode
Item 12 is set to the second surface of liquid crystal display layer, and first surface and second surface are two tables that liquid crystal display layer is away from each other
The extending direction of face, the first electrode item and second electrode item is mutually perpendicular to.
Optionally, the erasing circuit includes the first driving chip connected with the first electrode item and described second
Second driving chip of electrode strip connection, and the third chip of connection the first driving chip and the second driving chip, described the
Three chips are for generating selective erase driving signal after receiving the selective erase signal, and first driving chip is according to
Selective erase driving signal generate drive part first electrode item first partial erasing voltage, second driving chip according to
The selective erase driving signal generates the second local erasing voltage of drive part second electrode item.
Specifically, erasing circuit includes the first driving chip connected with the first electrode item and the second electrode
Second driving chip of item connection, and the third chip of connection the first driving chip and the second driving chip, the third core
Piece is for generating selective erase driving signal after receiving the selective erase signal, and first driving chip is according to the part
The first partial erasing voltage that driving signal generates drive part first electrode item is wiped, second driving chip is according to
Selective erase driving signal generates the second local erasing voltage of drive part second electrode item, first partial erasing voltage and the
Two selective erase voltages carry out image wipe to the corresponding display surface of projected position.
As shown in Figure 3,4, chip U5 is the first driving chip, connects first electrode item, i.e. ITO anode；Chip U12 is the
Two driving chips connect second electrode item, i.e. ITO cathode；Chip U6 is third chip.After chip U6 receives selective erase signal
Selective erase driving signal is generated, the first driving chip and the second driving chip, i.e. chip U5 and chip U12 are sent respectively to.
Chip U5 generates first partial erasing voltage according to selective erase driving signal, is used for driving portion after the amplification of the first triode
Divide ITO anode；Chip U12 generates the second local erasing voltage according to selective erase driving signal, amplifies by the second triode
It is used for drive part ITO cathode afterwards.First partial erasing voltage and the second local erasing voltage are to the corresponding display of projected position
Surface carries out image wipe.
Optionally, which further comprises that button is wiped by office, and the office wipes button and is used to generate first mode signal,
The erasing circuit wipes operating mode according to first mode signal enabling office, to receive selective erase signal.
Optionally, which further comprises full wiping button, and the full wiping button is used to generate second mode signal,
First driving chip generates the third selective erase voltage for driving whole first electrode items according to the second mode signal,
Second driving chip generates the 4th selective erase voltage for driving whole second electrodes article according to the second mode signal.
Specifically, the liquid crystal blackboard includes full wiping button, when wiping button entirely for pressing, full wiping button generates the second mould
Formula signal, the first driving chip generate the third selective erase electricity for driving whole first electrode items according to the second mode signal
Pressure, second driving chip generate the 4th selective erase electricity for driving whole second electrodes article according to the second mode signal
Pressure.Third selective erase voltage drives whole first electrode items, and the 4th selective erase voltage drives whole second electrodes article, to whole
A liquid crystal display layer carries out image wipe.
The utility model, which is realized, wipes the regional area of written contents, and other regions are not influenced then by erasing, gram
The deficiency all wiped can only be realized by having taken traditional technology, improve the working efficiency and usage experience of user, improve liquid crystal
The commercial value of blackboard and its application apparatus.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (9)
1. one kind can selective erase liquid crystal blackboard characterized by comprising
Liquid crystal display layer, including display surface, the liquid crystal display layer are shown according to the received pressure touch track of display surface
Corresponding image；
Identification device wipes projected position and projected outline of the part in display surface for identification, when the projection of the erasing part
Selective erase signal is generated when profile is more than preset area；
Erasing circuit, for carrying out image wiping to the corresponding display surface of the projected position according to the selective erase signal
It removes.
2. it is according to claim 1 can selective erase liquid crystal blackboard, which is characterized in that the preset area include first
Preset area and the second preset area, the erasing part include the first erasing part and the second erasing part, and the identification device is used for
Projected position and projected outline of the first erasing part of identification in display surface, when the projected outline of the first erasing part is more than the
Projection of the second erasing part in display surface for identification of selective erase signal or the identification device is generated when one preset area
Position and projected outline generate selective erase signal when the projected outline of the second erasing part is more than the second preset area,
First preset area wipes the size of part less than second less than the second preset area, the size of the first erasing part.
3. it is according to claim 2 can selective erase liquid crystal blackboard, which is characterized in that further comprise the first erasing part
It places position and the second erasing part places position, be respectively used to accommodate the first erasing part and the second erasing part.
4. it is according to claim 3 can selective erase liquid crystal blackboard, which is characterized in that it is described first erasing part place position
Position, which is placed, with the second erasing part respectively includes magnetic part for adsorbing the fixed first erasing part and the second erasing part.
5. it is according to claim 3 can selective erase liquid crystal blackboard, which is characterized in that it is described first erasing part place position
First light sensor is set, for generating first game erasing signals, the identification device root when the first erasing part is removed
The first preset area is set by preset area according to first game erasing signals；Second erasing part places position and the second light level is arranged
Device, for generating second game's erasing signals when the second erasing part is removed, the identification device will according to second game's erasing signals
Preset area is set as the second preset area.
6. it is according to claim 1 can selective erase liquid crystal blackboard, which is characterized in that the erasing circuit include setting
In multiple first electrode items being spaced apart from each other of liquid crystal display layer first surface, it is set to the multiple of liquid crystal display layer second surface
The second electrode item being spaced apart from each other, the first surface and second surface are two surfaces that liquid crystal display layer is away from each other, described
The extending direction of first electrode item and second electrode item is mutually perpendicular to.
7. it is according to claim 6 can selective erase liquid crystal blackboard, which is characterized in that the erasing circuit includes and institute
The second driving chip for connect with the second electrode item of the first driving chip of first electrode item connection is stated, and connects the
The third chip of one driving chip and the second driving chip, the third chip after receiving the selective erase signal for generating
Selective erase driving signal, first driving chip generate drive part first electrode according to the selective erase driving signal
The first partial erasing voltage of item, second driving chip generate drive part second according to the selective erase driving signal
The local erasing voltage of the second of electrode strip.
8. it is according to claim 7 can selective erase liquid crystal blackboard, which is characterized in that further comprise office wipe button,
The office wipes button and wipes work according to first mode signal enabling office for generating first mode signal, the erasing circuit
Mode, to receive selective erase signal.
9. it is according to claim 7 can selective erase liquid crystal blackboard, which is characterized in that further comprise it is complete wipe button,
The full wiping button generates driving according to the second mode signal for generating second mode signal, first driving chip
The third selective erase voltage of whole first electrode items, second driving chip generate driving according to the second mode signal
4th selective erase voltage of whole second electrodes article.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920174012.4U CN209433153U (en) | 2019-01-31 | 2019-01-31 | It is a kind of can selective erase liquid crystal blackboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920174012.4U CN209433153U (en) | 2019-01-31 | 2019-01-31 | It is a kind of can selective erase liquid crystal blackboard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613735A (en) * | 2019-01-31 | 2019-04-12 | 深圳中电数码显示有限公司 | It is a kind of can selective erase liquid crystal blackboard |
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2019
- 2019-01-31 CN CN201920174012.4U patent/CN209433153U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613735A (en) * | 2019-01-31 | 2019-04-12 | 深圳中电数码显示有限公司 | It is a kind of can selective erase liquid crystal blackboard |
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