WO2022105490A1 - 液晶手写板、手写装置及手写装置的控制方法 - Google Patents

液晶手写板、手写装置及手写装置的控制方法 Download PDF

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Publication number
WO2022105490A1
WO2022105490A1 PCT/CN2021/123853 CN2021123853W WO2022105490A1 WO 2022105490 A1 WO2022105490 A1 WO 2022105490A1 CN 2021123853 W CN2021123853 W CN 2021123853W WO 2022105490 A1 WO2022105490 A1 WO 2022105490A1
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Prior art keywords
liquid crystal
substrate
electrode
area
erased
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PCT/CN2021/123853
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English (en)
French (fr)
Inventor
葛杨
赵宇
武晓娟
王家星
王先
岳怀瑞
马建威
王海龙
冯大伟
闫浩
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/802,744 priority Critical patent/US11994762B2/en
Publication of WO2022105490A1 publication Critical patent/WO2022105490A1/zh

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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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133357—Planarisation layers
    • G—PHYSICS
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    • 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
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    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F1/139—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 orientation effects in which the liquid crystal remains transparent
    • G02F1/1391—Bistable or multi-stable liquid crystal cells
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix

Definitions

  • the present application relates to the field of display technology, and in particular, to a liquid crystal tablet, a handwriting device, and a control method for the handwriting device.
  • a tablet is an electronic device used for writing and drawing.
  • the liquid crystal tablet has the advantages of low power consumption and clear handwriting, and has occupied more market shares in recent years.
  • the current liquid crystal tablet can only be erased on the entire surface, and the use flexibility is low.
  • Embodiments of the present application provide a liquid crystal tablet, a handwriting device, and a control method for the handwriting device.
  • the problem that the liquid crystal tablet in the prior art has low flexibility in use can be solved, and the technical solution is as follows:
  • liquid crystal tablet comprising:
  • liquid crystal panel a liquid crystal panel, a driving component electrically connected to the liquid crystal panel;
  • the liquid crystal panel includes: a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate, and the first substrate includes: a plurality of block-shaped pixels an electrode, the second substrate includes: a planar common electrode;
  • the driving component is configured to: when the liquid crystal tablet is in the erasing mode, based on the position information of the to-be-erased area, apply a pixel voltage to the pixel electrodes in the to-be-erased area, so that the to-be-erased area is A voltage difference is formed between the pixel electrode in the erased area and the common electrode.
  • the first substrate further includes: a plurality of thin film transistors electrically connected to the driving component, and the pixel electrode is electrically connected to at least one of the thin film transistors.
  • the thin film transistor includes: a first electrode and a second electrode, the first electrode includes a U-shaped structure, the second electrode includes a strip-shaped structure, and one end of the second electrode is located in the U-shaped structure Inside, the other end is electrically connected to the pixel electrode.
  • the first substrate further includes: a first substrate, on which the thin film transistor and the pixel electrode are located;
  • the thin film transistor further includes: a gate electrode, an active layer pattern and a gate insulating layer;
  • the gate is located on a side of the active layer pattern close to the first substrate, the gate insulating layer is located between the gate and the active layer pattern, the first electrode and the The second poles are located on the side of the active layer pattern away from the first substrate, and both the first pole and the second pole overlap with the active layer pattern.
  • the first substrate further includes: a data line and a gate line located on the first substrate and extending in an intersecting direction, the data line is electrically connected to the first electrode, and the gate line is connected to the first electrode.
  • the gate is electrically connected, and both the data line and the gate line are electrically connected to the driving component.
  • the first substrate further includes: an auxiliary electrode line located on the first substrate and provided in the same layer as the gate line, and the extension direction of the auxiliary electrode line and the gate line is the same.
  • the first substrate further includes: a first flat layer on the thin film transistor, the pixel electrode is on the first flat layer and in contact with the first flat layer, the first flat layer The layer has a via hole, and the pixel electrode is electrically connected to the second electrode through the via hole.
  • the first substrate further includes: a second flat layer on the pixel electrode.
  • the liquid crystal panel further includes: a spacer located between the first substrate and the second substrate.
  • the liquid crystal layer includes: bistable liquid crystal molecules.
  • a handwriting device comprising:
  • liquid crystal tablet and a position determination component electrically connected with the driving component in the liquid crystal tablet;
  • the position determination component is configured to: acquire the position information of the to-be-erased area of the liquid crystal panel in the liquid crystal tablet, and send the position information of the to-be-erased area to the driving component.
  • the handwriting device further comprises: a switch electrically connected to the position determining component, the switch being configured to: control the liquid crystal tablet to switch between the erasing mode and the writing mode;
  • the position determination component is further configured to stop acquiring the position information of the area to be erased of the liquid crystal panel when the liquid crystal tablet is in the writing mode.
  • the position determination component includes: an infrared sensor.
  • a control method of a handwriting device applied to any of the above-mentioned handwriting devices, the control method of the handwriting device comprising:
  • the position determination component acquires the position information of the area to be erased of the liquid crystal panel in the liquid crystal tablet, and sends the position information of the area to be erased to the drive assembly;
  • a pixel voltage is applied to the pixel electrodes in the to-be-erased area through the driving component, so that the gap between the pixel electrodes in the to-be-erased area and the common electrode is create a voltage difference.
  • the method further includes: when the liquid crystal tablet is in a writing mode, controlling the position determination component to stop acquiring the position information of the to-be-erased area of the liquid crystal panel.
  • the liquid crystal writing board includes: a liquid crystal panel and a driving component.
  • the liquid crystal panel includes: a first substrate and a second substrate arranged oppositely, and a liquid crystal layer located between the first substrate and the second substrate. Since the pixel electrodes in the first substrate in the liquid crystal panel are a plurality of block electrodes, when the liquid crystal tablet is in the erasing mode, the driving component electrically connected to the liquid crystal panel can be based on the position information of the area to be erased , apply a pixel voltage to the block-shaped pixel electrodes in the area to be erased, so that a voltage difference is formed between the pixel electrodes in the area to be erased and the common electrode, so that the liquid crystal molecules in the liquid crystal layer located in the area to be erased are Rearrangement is performed under the action of the voltage difference, so that the local area of the liquid crystal tablet can be erased, and the use flexibility of the liquid crystal tablet can be improved.
  • Fig. 1 is a film layer structure diagram of a liquid crystal tablet provided by the related art
  • FIG. 2 is a schematic structural diagram of a liquid crystal tablet provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a film layer structure of a liquid crystal panel in a liquid crystal tablet provided by an embodiment of the present application;
  • FIG. 4 is a top view of the liquid crystal panel in the thin film transistor region of the liquid crystal tablet shown in FIG. 3;
  • Fig. 5 is the top view of the liquid crystal panel in the liquid crystal tablet shown in Fig. 3;
  • Fig. 6 is the film layer structure schematic diagram of the liquid crystal panel in another liquid crystal tablet provided by the embodiment of the present application;
  • Fig. 7 is the top view of the liquid crystal panel in the liquid crystal tablet shown in Fig. 6;
  • FIG. 8 is a schematic diagram of a film layer structure of a liquid crystal panel in yet another liquid crystal tablet provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a handwriting device provided by an embodiment of the present application.
  • FIG. 10 is a flowchart of a method for controlling a handwriting device according to an embodiment of the present invention.
  • FIG. 1 is a film layer structure diagram of a liquid crystal tablet provided in the related art.
  • the liquid crystal tablet 00 generally includes: a first substrate 01 and a second substrate 02 disposed opposite to each other, and a liquid crystal layer 03 located between the first substrate 01 and the second substrate 02 .
  • the side of the first substrate 01 close to the second substrate 03 has a planar electrode 011
  • the side of the second substrate 02 close to the first substrate 01 has a planar electrode 021
  • the planar electrode 011 and the planar electrode 021 are both planar electrodes on the entire surface.
  • the liquid crystal tablet 00 When the liquid crystal tablet 00 is in the writing mode, some liquid crystal molecules in the liquid crystal layer 03 will reflect visible light under the action of external pressure, and the liquid crystal tablet 00 displays the handwriting; when the liquid crystal tablet 00 is in the erasing mode, the liquid crystal tablet 00 00 Apply a voltage to the planar electrode 011 and the planar electrode 021 located on both sides of the liquid crystal layer 03, so that a voltage difference is formed between the planar electrode 011 and the planar electrode 021, so that the liquid crystal molecules in the liquid crystal layer 03 are in the voltage difference. Rearranged under the action of to erase the handwriting displayed on the LCD tablet.
  • the electrodes 011 and 021 in the first substrate 01 and the second substrate 02 are all planar electrodes, when the liquid crystal tablet 00 is in the erasing mode, all liquid crystal molecules in the liquid crystal layer 03 are It will be rearranged under the action of the voltage difference between the planar electrode 011 and the planar electrode 021, so that the liquid crystal tablet 00 can only be erased on the entire surface, and the use flexibility is low.
  • FIG. 2 is a schematic structural diagram of a liquid crystal tablet provided by an embodiment of the present application.
  • the liquid crystal tablet 000 may include:
  • the liquid crystal panel 001 may include: a first substrate 100 and a second substrate 200 disposed opposite to each other, and a liquid crystal layer 300 located between the first substrate 100 and the second substrate 200 .
  • the first substrate 100 may include: a plurality of block-shaped pixel electrodes 101
  • the second substrate 200 may include: a planar common electrode 201 .
  • the plurality of block-shaped pixel electrodes 101 are arranged in a matrix, and the common electrode 201 is orthographically projected on the first substrate 100 to cover the area where the plurality of block-shaped pixel electrodes 101 are located.
  • the driving component 002 is electrically connected to the liquid crystal panel 001, and the driving component 002 is configured to: when the liquid crystal tablet 000 is in the erasing mode, based on the position information of the area to be erased, apply voltage to the pixel electrodes 101 in the area to be erased pixel voltage, so that a voltage difference is formed between the pixel electrode 101 and the common electrode 201 in the area to be erased.
  • the liquid crystal tablet provided by the embodiments of the present application includes a liquid crystal panel and a driving component.
  • the liquid crystal panel includes: a first substrate and a second substrate arranged oppositely, and a liquid crystal layer located between the first substrate and the second substrate.
  • the driving component electrically connected to the liquid crystal panel can be based on the position information of the area to be erased , apply a pixel voltage to the block-shaped pixel electrodes in the area to be erased, so that a voltage difference is formed between the pixel electrodes in the area to be erased and the common electrode, so that the liquid crystal molecules in the liquid crystal layer located in the area to be erased are Rearrangement is performed under the action of the voltage difference, so that the local area of the liquid crystal tablet can be erased, and the use flexibility of the liquid crystal tablet can be improved.
  • the liquid crystal tablet when the liquid crystal tablet is in the erasing mode, the liquid crystal tablet needs to apply a voltage to the two inner surface electrodes. Since the two surface electrodes are all surface electrodes, the The liquid crystal tablet needs to increase the driving voltage so that the voltage can be applied to the entire planar electrode, which leads to a large power consumption of the liquid crystal tablet, and reduces the service life of the liquid crystal tablet.
  • FIG. 3 is a schematic diagram of a film layer structure of a liquid crystal panel in a liquid crystal tablet provided by an embodiment of the present application.
  • the first substrate 100 in the liquid crystal panel 001 may further include: a plurality of thin film transistors 102 (English: Thin-film transistors; TFT for short) electrically connected to the driving component 002 , and each pixel electrode 101 may be connected to at least one thin film transistor 102 Electrical connection.
  • the driving component 002 can selectively apply the pixel voltage to the pixel electrodes 102 in the liquid crystal panel 001 through the plurality of thin film transistors 102, so as to realize the application of the pixel voltage to the pixel electrodes 102 in some regions of the liquid crystal panel 001, and further It realizes the erasing of the local area of the liquid crystal tablet 000 in the erasing mode.
  • the liquid crystal tablet 000 is in the erasing mode, there is no need to apply a pixel voltage to all the pixel electrodes 101 in the liquid crystal panel 001, and the pixel voltage applied to each pixel electrode 102 is usually small, which effectively reduces the liquid crystal display.
  • the power consumption of the tablet 000 is reduced, and the service life of the liquid crystal tablet 000 is effectively improved.
  • FIG. 4 is a top view of the liquid crystal panel in the liquid crystal tablet shown in FIG. 3 at the thin film transistor area.
  • the thin film transistor 102 may include: a first electrode 102a and a second electrode 102b.
  • the first electrode 102a may be one of the source electrode and the drain electrode
  • the second electrode 102b may be the other one of the source electrode and the drain electrode.
  • the first electrode 102a includes a U-shaped structure
  • the second electrode 102b includes a strip-shaped structure
  • one end of the second electrode 102b is located in the U-shaped structure in the first electrode 102a, and the other end is electrically connected to the pixel electrode 101 .
  • the first pole 102a has: a first extension part A, a second extension part B and a third extension part C which are connected in sequence.
  • the first extension A and the third extension C of the first pole 102a extend in the same direction, and the second extension B of the first pole 102a is perpendicular to the extension direction of the first extension A and is parallel to the third extension
  • the extending direction of the portion C is vertical.
  • the sequentially connected first extension portion A, second extension portion B and third extension portion C constitute a U-shaped structure in the first pole 102a.
  • the second electrode 102b has: a first connection part D between the first extension part A and the third extension part C of the first electrode 102a, and a second connection part E connected to the first connection part D, wherein , the first connection portion D of the second electrode 102b is a strip-shaped structure in the second electrode 102b , and the second connection portion E of the second electrode 102b is a block-shaped structure and is electrically connected to the pixel electrode 101 .
  • the thin film transistor 102 may further include: an active layer pattern 102c overlapping with the first electrode 102a and the second electrode 102b.
  • the channel region F of the active layer pattern 102c is a U-shaped channel region.
  • the channel region F of the active layer pattern 102c refers to the region in the active layer pattern 102c where the active layer pattern 102c and the first electrode 102a are in contact, and the active layer pattern 102c and the second electrode 102b The area between the touched areas.
  • the channel region F of the active layer pattern 102c in the thin film transistor 102 is a U-shaped channel region, since the U-shaped channel region has a larger aspect ratio, the thin film transistor 102 can withstand higher The breakdown voltage can further improve the service life of the liquid crystal tablet 000.
  • the channel region F of the active layer pattern 102c has two first elongated regions with the same extension direction and the same length, and a second elongated region for connecting the two first elongated regions.
  • the width of the first elongated region and the second elongated region are the same.
  • the length of the channel region F of the active layer pattern 102c is the sum of the lengths of the two first elongated regions, and the width of the channel region F is the first elongated region or the second elongated region width.
  • the length-width ratio of the channel region F of the active layer pattern 102c may be 50/4 micrometers, so that the thin film transistor 102 can withstand a higher breakdown voltage while meeting the current required for pixel driving.
  • the first substrate 100 may further include: a first substrate 103 , the thin film transistor 102 and the pixel electrode 101 are all located on the first substrate 103 .
  • the thin film transistor 102 may further include: a gate electrode 102d and a gate insulating layer 102e.
  • the gate 102d is located on the side of the active layer pattern 102c close to the first substrate 103, the gate insulating layer 102e is located between the gate 102d and the active layer pattern 102c, the first electrode 102a and the second electrode 102b are both located on The active layer pattern 102c is on a side away from the first substrate 103, and both the first electrode 102a and the second electrode 102b overlap with the active layer pattern 102c. That is, the thin film transistor 102 is a bottom gate thin film transistor. In other possible implementation manners, the thin film transistor 102 may also be a top-gate thin film transistor, which is not limited in this embodiment of the present application.
  • the first substrate 103 may be a glass substrate.
  • FIG. 5 is a top view of the liquid crystal panel in the liquid crystal tablet shown in FIG. 3 .
  • the first substrate 100 may further include: a data line 104 and a gate line 105 located on the first substrate 103 and extending in an intersecting direction.
  • the data lines 104 and the gate lines 105 whose extending directions intersect may define a plurality of pixel regions 001 a in the liquid crystal panel 001 .
  • any two adjacent data lines 104 and any two adjacent gate lines 105 can enclose a pixel area 001a.
  • Each pixel electrode 101 on the first substrate 100 may be located in one pixel area 001a.
  • the pixel area 001a may be a rectangular area with a length and a width of 1 mm. In this way, the dizziness of the user when viewing the liquid crystal panel can be reduced, and at the same time, the liquid crystal panel 001 can be guaranteed to have a higher resolution.
  • the minimum erasable area (ie, a pixel area) of the liquid crystal tablet 000 is small, which effectively improves the erasing accuracy of the liquid crystal tablet 000 .
  • the data line 104 is electrically connected to the first electrode 102 a of the thin film transistor 102
  • the gate line 105 is electrically connected to the gate electrode 102 d of the thin film transistor 102
  • the data line 104 is disposed in the same layer as the first electrode 102a and the second electrode 102b, that is, the data line 104, the first electrode 102a and the second electrode 102b are formed through a patterning process
  • the gate line 105 and the gate electrode 102d are disposed in the same layer, that is, the gate line 105 and the gate electrode 102d are formed by one patterning process.
  • the thicknesses of the data line 104 and the first electrode 102a and the gate line 105 and the gate electrode 102d may range from 350 to 450 nanometers.
  • the thicknesses may both be 400 nanometers.
  • the materials of the data lines 104 and the gate lines 105 may include metal materials such as metal aluminum, metal molybdenum or alloys. In this way, the resistance of the data line 104 and the gate line 105 can be reduced.
  • both the data line 104 and the gate line 105 are also electrically connected to the driving component 002 .
  • the driving component 002 may include: a timing controller (English: Timing Controller; TCON for short), a source driver (English: Source Driver) and a gate driver (English: Gate Driver).
  • the timing controller is electrically connected to the source driver and the gate driver respectively
  • the data line 104 in the liquid crystal panel 001 is electrically connected to the source driver
  • the gate line 105 of the liquid crystal panel 001 is electrically connected to the gate driver .
  • the main function of the timing controller is to process the position information of the area to be erased to determine the position of each pixel electrode in the area to be erased, and to generate corresponding data signals and control signals, and the data signals are transmitted to the source
  • the electrode driver and the source driver convert the received data signal into a pixel voltage, and write it into the corresponding pixel area on the liquid crystal panel 001 through the data line 104 .
  • the control signal is transmitted to the gate driver, and the gate driver converts the received control signal into a gate voltage, and writes it into the corresponding pixel area on the liquid crystal panel 001 through the gate line 105, so as to realize the control signal on the liquid crystal panel 001.
  • the widths of the data lines 104 and the gate lines 105 may range from 8 to 12 micrometers.
  • the widths of the data lines 104 and the gate lines 105 may both be 10 micrometers.
  • the resistance of the data lines 104 and the grid lines 105 can be further reduced, and at the same time, the probability of visible grid lines appearing on the liquid crystal panel 001 caused by the reflection of the data lines 104 and the grid lines 105 can be reduced, thereby improving the handwriting of liquid crystals.
  • the display effect of board 000 is a display effect of board 000.
  • the distance between the plurality of block-shaped pixel electrodes 101 may range from 18 ⁇ m to 22 ⁇ m, for example, the distance between the plurality of block-shaped pixel electrodes 101 may be 20 ⁇ m. In this way, the distance between the pixel electrode 101 and the data line 104 and the gate line 105 is relatively large, which can reduce the parasitic capacitance between the pixel electrode 101 and the data line 104 and the gate line 105 .
  • FIG. 6 is a schematic diagram of the film layer structure of the liquid crystal panel in another liquid crystal tablet provided by the embodiment of the present application
  • FIG. 7 is the liquid crystal tablet shown in FIG. 6 .
  • the first substrate 100 may further include: an auxiliary electrode line 106 located on the first substrate 103 and provided in the same layer as the gate line 105 .
  • the auxiliary electrode lines 106 and the gate lines 105 extend in the same direction.
  • the pixel electrodes 101 in the first substrate 100 are arranged in multiple rows, and the number of auxiliary electrode lines 106 in the first substrate 100 is the same as the number of rows of the pixel electrodes 101 .
  • the orthographic projection of each auxiliary electrode line 106 on the first substrate 103 overlaps with the orthographic projection of the corresponding row of pixel electrodes 101 on the first substrate 103 .
  • Each of the pixel electrodes 101 constitutes a storage capacitor.
  • the storage capacitor can be used to maintain the charging voltage of the pixel electrode 101.
  • the storage capacitor can avoid the voltage change of the pixel area 001a at the erasing place and affect the surrounding pixel area. 001a voltage, thereby avoiding the display effect of the pixel area 001a around the image.
  • the first substrate 100 may further include: a first planarization layer 107 located on the thin film transistor 102 , and the pixel electrode 101 is located on the first planarization layer 107 and is in contact with the first planarization layer 107 , the first flat layer 107 has a via hole a, and the pixel electrode 101 is electrically connected to the second electrode 102b through the via hole a.
  • the first planarization layer 107 can be used to protect the thin film transistor 102 .
  • FIG. 8 is a schematic diagram of a film layer structure of a liquid crystal panel in yet another liquid crystal tablet provided by an embodiment of the present application.
  • the first substrate 100 may further include: a second flat layer 108 on the pixel electrode 101 .
  • the second flat layer 108 can be used for The foreign matter located between the first substrate 100 and the second substrate 200 is prevented from being connected to the pixel electrode 101 in the first substrate 100 and the common electrode 201 in the second substrate 200 .
  • the liquid crystal panel 001 further includes a spacer 400 located between the first substrate 100 and the second substrate 200 .
  • the spacer 400 can be used to isolate the first substrate 100 and the second substrate 200, and at the same time, the spacer 400 has a certain elasticity, which can provide elastic deformation when the liquid crystal tablet 000 is subjected to external pressure, and the spacer 400 has a certain elasticity.
  • the pad 400 can support the liquid crystal layer 300 , avoid the problem that the arrangement of liquid crystal molecules in the liquid crystal layer 300 is affected when the liquid crystal panel 001 is pressed, and improve the display effect of the liquid crystal tablet 000 .
  • the liquid crystal layer 300 includes: bistable liquid crystal molecules.
  • Bistable liquid crystal molecules have a planar texture state (English: Planar Texture; abbreviation: P state), a focal conic texture state (English: Focal Conic Texture; abbreviation: FC state) and a vertical texture state (English: Hometropic Texture; Abbreviation: H state).
  • P state Planar Texture
  • FC state focal conic Texture
  • H state vertical texture state
  • the P state and the FC state are stable states that can be maintained without a voltage
  • the H state is an unstable state that appears when a voltage is continuously applied.
  • the bistable liquid crystal molecules in the liquid crystal layer 300 are turned to the P state under the action of the external pressure, which can reflect visible light, and the area of the liquid crystal panel 001 subjected to external pressure displays the handwriting;
  • the driving component 002 in the board 000 applies a pixel voltage to the pixel electrode 101 in the area to be erased, a voltage difference is formed between the pixel electrode 101 and the common electrode 201 in the area to be erased, and a bistable voltage in the area to be erased is formed.
  • the liquid crystal molecules are rearranged into the FC state, which does not reflect visible light. In this case, the handwriting written in the area to be erased can be erased.
  • the second substrate 200 may further include: a second substrate 202 .
  • the second substrate 202 is a flexible substrate, and the material of the second substrate 202 may include polyethylene terephthalate (English: Polyethylene Terephthalate; PET for short).
  • the common electrode 201 is located on the second substrate 202 .
  • the liquid crystal tablet provided by the embodiments of the present application includes a liquid crystal panel and a driving component.
  • the liquid crystal panel includes: a first substrate and a second substrate arranged oppositely, and a liquid crystal layer located between the first substrate and the second substrate.
  • the driving component electrically connected to the liquid crystal panel can be based on the position information of the area to be erased , apply a pixel voltage to the block-shaped pixel electrodes in the area to be erased, so that a voltage difference is formed between the pixel electrodes in the area to be erased and the common electrode, so that the liquid crystal molecules in the liquid crystal layer located in the area to be erased are Rearrangement is performed under the action of the voltage difference, so that the local area of the liquid crystal tablet can be erased, and the use flexibility of the liquid crystal tablet can be improved.
  • Embodiments of the present application also provide a method for manufacturing a liquid crystal panel.
  • This liquid crystal panel manufacturing method is used to form the liquid crystal panel shown in FIG. 8 .
  • the manufacturing method of the liquid crystal panel may include:
  • Step A1 forming a gate pattern, a gate insulating layer, an active layer pattern, a source-drain pattern, a first flat layer, a pixel electrode, and a second flat layer on the first substrate to obtain a first substrate.
  • a gate layer is formed on a first substrate, and a patterning process is performed on the gate layer to form a gate pattern.
  • the gate pattern may include a gate, and a gate line and an auxiliary electrode line connected to the gate.
  • the first substrate may be a glass substrate.
  • the material of the gate pattern may include metal materials such as metal aluminum, metal molybdenum or alloys.
  • the gate line is used to apply a gate voltage to the gate.
  • a deposition gate insulating layer is formed on the first substrate on which the gate pattern is formed.
  • the gate insulating layer is used to protect the gate lines.
  • the material of the gate insulating layer may include silicon dioxide, silicon nitride, or a mixed material of silicon dioxide and silicon nitride.
  • an active material film is formed on the first substrate on which the gate insulating layer is formed, and a patterning process is performed on the active material film to form an active layer pattern.
  • the material of the active layer pattern may include semiconductor materials such as polysilicon, amorphous silicon, or oxide semiconductor.
  • the source-drain pattern may include: a first electrode, a second electrode and a data line.
  • the first electrode can be one of the source electrode and the drain electrode
  • the second electrode can be the other one of the source electrode and the drain electrode.
  • the material of the source and drain patterns may include: metal aluminum.
  • a flat film is formed on the first substrate on which the source and drain patterns are formed, and a patterning process is performed on the flat film to form a first flat layer.
  • the first flat layer is used to protect the thin film transistor, and the first flat layer has a via hole through which the pixel electrode formed subsequently can be electrically connected to the second electrode in the source-drain pattern.
  • the material of the first flat layer may include: silicon dioxide, silicon nitride, or a mixed material of silicon dioxide and silicon nitride.
  • the plurality of bulk pixel electrode materials may include: Indium Tin Oxide (English: Indium Tin Oxide; Abbreviation: ITO) or Indium Zinc Oxide (English: Indium Zinc Oxide; Abbreviation: IZO) and other transparent conductive materials.
  • a flat film is formed on the first substrate on which the pixel electrodes are formed, and a patterning process is performed on the flat film to form a second flat layer.
  • the first substrate can be formed through the above process.
  • the one-time patterning process in the above embodiments may include: photoresist coating, exposure, development, etching, and photoresist stripping.
  • the two patterning processes for forming the active layer pattern and the source and drain patterns can be simplified into one patterning process by using a halftone mask.
  • Step A2 forming a spacer and a sealing frame on the first substrate.
  • an organic thin film is formed on the second flat layer in the first substrate, and a patterning process is performed on the organic thin film to form spacers.
  • a sealing frame material is coated on the periphery of the first substrate formed with the spacers to form a sealing frame.
  • the one-time patterning process in the above embodiments may include: photoresist coating, exposure, development, etching, and photoresist stripping.
  • Step A3 forming a common electrode on the second substrate to obtain a second substrate.
  • a second conductive film is formed on the second substrate, and a patterning process is performed on the second conductive film to form the common electrode.
  • the second substrate is a flexible substrate, and the material of the second substrate may include: PET.
  • the common electrode is a planar electrode, and the material of the common electrode may include: ITO or IZO.
  • the second substrate can be formed through the above process.
  • the one-time patterning process in the above embodiments may include: photoresist coating, exposure, development, etching, and photoresist stripping.
  • Step A4 pouring liquid crystal molecules into the sealing frame to form a liquid crystal layer.
  • the liquid crystal molecules may include: bistable liquid crystal molecules.
  • Step A5 covering the second substrate on the liquid crystal layer, so that the common electrode in the second substrate faces the first substrate, and the pixel electrodes in the first substrate face the second substrate.
  • liquid crystal panel shown in FIG. 8 can be formed through the above steps A1 to A5.
  • FIG. 9 is a schematic structural diagram of a handwriting device provided by an embodiment of the present application.
  • the handwriting device includes: the above-mentioned liquid crystal tablet 000 and a position determining component 010 .
  • the position determining component 010 is electrically connected to the driving component in the liquid crystal tablet 000 .
  • the position determining component 010 is configured to: acquire the position information of the area to be erased of the liquid crystal panel in the liquid crystal tablet 000, and send the position information of the area to be erased to the driving component.
  • the driving component can apply a pixel voltage to the pixel electrodes in the area to be erased based on the position information of the area to be erased, so that the pixels in the area to be erased A voltage difference is formed between the electrode and the common electrode, so that the liquid crystal molecules in the liquid crystal layer in the area to be erased are rearranged under the action of the voltage difference, and the writing in the area to be erased in the liquid crystal panel is erased.
  • the location determination component 010 may include: an infrared sensor.
  • the infrared sensor can emit infrared signals to the display area of the liquid crystal tablet 000, thereby detecting whether there is an erasing tool in the display area of the liquid crystal tablet 000, and can determine the erasing tool
  • the position information in the display area of the liquid crystal tablet 000, the position of the erasing tool in the display area of the liquid crystal tablet 000 can be regarded as the area to be erased of the liquid crystal tablet 000.
  • the erasing tool may be a blackboard eraser.
  • the handwriting device may further include: a switch 020 .
  • the toggle switch 020 is electrically connected to the position determination component 010 .
  • the switch 020 is configured to control the liquid crystal tablet 000 to switch between the erasing mode and the writing mode.
  • the position determination component 010 is further configured to stop acquiring the position information of the to-be-erased area of the liquid crystal panel when the liquid crystal tablet 000 is in the writing mode.
  • the handwriting device may further include: a controller electrically connected to the switch 020 and the position determination component 010 respectively.
  • the controller can receive a control instruction sent by the switch 020 to control the position determination component 010 to be in a working state or a non-working state. For example, if the controller receives a control instruction sent by the switch 020 for controlling the liquid crystal tablet 000 to be in the erasing mode, the controller can control the position determination component 010 to be in a working state; When the control instruction for controlling the liquid crystal tablet 000 to be in the writing mode, the controller can control the position determination component 010 to be in a non-working state.
  • the user can press the switch 020, and the controller can control the position determination component 010 to be in a working state, so that the liquid crystal tablet 000 is in the erasing mode.
  • the position determining component 010 can determine the location information of the erasing tool in the display area of the liquid crystal tablet 000 .
  • the position of the erasing tool in the display area of the liquid crystal tablet 000 may be regarded as the to-be-erased area of the liquid crystal tablet 000 . In this way, the position determination component 010 can obtain the position information of the area to be erased.
  • the location determining component 010 can send the location information of the area to be erased to the driving component.
  • the driving component can apply a pixel voltage to the pixel electrode in the to-be-erased area based on the position information of the to-be-erased area, so that a voltage difference is formed between the pixel electrode and the common electrode in the to-be-erased area, thereby making The liquid crystal molecules in the area to be erased in the liquid crystal layer are rearranged under the action of the voltage difference, and the handwriting in the area to be erased in the liquid crystal panel is erased.
  • the controller can control the position determination component 010 to be in a non-working state, so that the liquid crystal tablet 000 is switched to the writing mode.
  • the position determination component 010 stops acquiring the position information of the to-be-erased area of the liquid crystal panel, and can write on the liquid crystal tablet 000 with a writing tool (eg, a writing pen), and some liquid crystal molecules in the liquid crystal layer 300 Under the action of external pressure, the liquid crystal molecules are reversed, reflecting visible light, and the liquid crystal tablet 000 displays the written handwriting.
  • a writing tool eg, a writing pen
  • the user can press the switch 020, and the controller can control the position determining component 010 to be in a working state, so that the liquid crystal tablet 000 is in the erasing mode.
  • the position determining component 010 can determine the location information of the erasing tool in the display area of the liquid crystal tablet 000 .
  • the position of the erasing tool in the display area of the liquid crystal tablet 000 may be regarded as the to-be-erased area of the liquid crystal tablet 000 . In this way, the position determination component 010 can obtain the position information of the area to be erased.
  • the location determining component 010 can send the location information of the area to be erased to the driving component.
  • the driving component can apply a pixel voltage to the pixel electrode in the to-be-erased area based on the position information of the to-be-erased area, so that a voltage difference is formed between the pixel electrode and the common electrode in the to-be-erased area, thereby making The liquid crystal molecules in the area to be erased in the liquid crystal layer are rearranged under the action of the voltage difference, and the handwriting in the area to be erased in the liquid crystal panel is erased.
  • the controller can control the position determination component 010 to be in a non-working state, so that the liquid crystal tablet 000 is switched to the writing mode. In this case, stop acquiring the position information of the to-be-erased area of the liquid crystal panel, and you can write on the liquid crystal tablet 000 by means of a writing pen and other tools. Some liquid crystal molecules in the liquid crystal layer are subjected to external pressure, and the liquid crystal molecules are reversed. Reflecting visible light, the liquid crystal tablet 000 displays the written handwriting.
  • the preset duration may be 1 to 5 seconds.
  • the erasing mode of the liquid crystal tablet 000 may further include a full-surface erasing mode.
  • the controller in the handwriting device can also be electrically connected with the drive assembly of the liquid crystal tablet 000.
  • the controller can send a corresponding full-surface erasing command to the driving component, so that the driving component can apply pixel voltage to all pixel electrodes in the liquid crystal panel, so that a voltage difference is formed between all pixel electrodes in the liquid crystal panel and the common electrode , all the liquid crystal molecules in the liquid crystal layer are rearranged under the action of the voltage difference, and the handwriting in all areas of the liquid crystal panel is erased.
  • control instruction for controlling the liquid crystal tablet 000 to be in the whole-surface erasing mode may be an instruction triggered by the user's long-press operation on the switch 020 .
  • the handwriting device controls the liquid crystal tablet to switch between the erasing mode and the writing mode through a switch.
  • the driving component electrically connected to the liquid crystal panel , based on the position information of the area to be erased obtained by the position determination component, apply a pixel voltage to the block-shaped pixel electrodes in the area to be erased, so that a voltage difference is formed between the pixel electrode and the common electrode in the area to be erased, and then
  • the liquid crystal molecules located in the area to be erased in the liquid crystal layer are rearranged under the action of the voltage difference, so that the local area of the liquid crystal tablet can be erased, and the use flexibility of the liquid crystal tablet can be improved.
  • FIG. 10 is a flowchart of a method for controlling a handwriting device according to an embodiment of the present invention.
  • the control method of the handwriting device can be applied to the handwriting device in the above embodiment, for example, the handwriting device can be the handwriting device shown in FIG. 9 .
  • the control method of the handwriting device may include:
  • Step 1001 When the liquid crystal tablet is in the erasing mode, obtain the position information of the to-be-erased area of the liquid crystal panel in the liquid crystal tablet through the position determination component, and send the location information of the to-be-erased area to the driving component.
  • the liquid crystal tablet can be controlled to be in an erasing state through a switch.
  • Step 1002 Based on the position information of the area to be erased, apply a pixel voltage to the pixel electrode in the area to be erased through the driving component, so that a voltage difference is formed between the pixel electrode and the common electrode in the area to be erased.
  • the driving component electrically connected to the liquid crystal panel can be
  • the block-shaped pixel electrodes in the area apply a pixel voltage to form a voltage difference between the pixel electrode and the common electrode in the area to be erased, so that the liquid crystal molecules located in the area to be erased in the liquid crystal layer are affected by the voltage difference.
  • the local area of the liquid crystal tablet can be erased, and the use flexibility of the liquid crystal tablet can be improved.
  • control method of the handwriting device may further include:
  • Step B1 When the liquid crystal tablet is in the writing mode, the position determination component is controlled to stop acquiring the position information of the to-be-erased area of the liquid crystal panel.
  • the switching between the erasing mode and the writing mode can be controlled by the switching switch to control the liquid crystal tablet.
  • Step B2 when the liquid crystal tablet is in the full-surface erasing mode, apply a pixel voltage to all pixel electrodes through the driving component, so as to form a voltage difference between the pixel electrodes and the common electrode in the area to be erased.
  • the term “same layer” refers to the relationship between layers formed simultaneously in the same step, for example: when the gate line and the auxiliary electrode line are formed by performing one or more steps of the same patterning process, they are in in the same layer.
  • the gate lines and the auxiliary electrode lines may be formed in the same layer by simultaneously performing the steps of forming the gate lines and the auxiliary electrode lines.
  • the term “same layer” does not always mean that the thickness of the layer or layers in a cross-sectional view are the same

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Abstract

一种液晶手写板，包括：液晶面板（001）和驱动组件（002）。液晶面板（001）包括：相对设置的第一基板（100）和第二基板（200），以及位于第一基板（100）和第二基板（200）之间的液晶层（300）。由于液晶面板（001）中的第一基板（100）内的像素电极（101）为多个块状电极，因此，当该液晶手写板处于擦除模式时，与液晶面板（001）电连接的驱动组件（002）可以基于待擦除区域的位置信息，向待擦除区域内的块状的像素电极（101）施加像素电压，以使待擦除区域的像素电极（101）与公共电极（201）之间形成电压差，进而使得液晶层（300）中位于待擦除区域的液晶分子在电压差的作用下重新排列，实现对液晶手写板进行局部区域的擦除。还提供手写装置及手写装置的控制方法。

Description

液晶手写板、手写装置及手写装置的控制方法
本申请要求于2020年11月18日提交的申请号为202011293671.3、发明名称为“液晶手写板、手写装置及手写装置的控制方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，特别涉及一种液晶手写板、手写装置及手写装置的控制方法。
背景技术
手写板是一种用于实现文字书写和绘画的电子设备。其中，液晶手写板具有功耗低且笔迹清晰的优势，近年来在占据了较多的市场份额。但是，目前的液晶手写板仅能够实现整面擦除，使用灵活性较低。
发明内容
本申请实施例提供了一种液晶手写板、手写装置及手写装置的控制方法。可以解决现有技术中的液晶手写板使用灵活性较低的问题，所述技术方案如下：
一方面，提供了一种液晶手写板，所述液晶手写板包括：
液晶面板，与所述液晶面板电连接的驱动组件；
所述液晶面板，包括：相对设置的第一基板和第二基板，以及位于所述第一基板和所述第二基板之间的液晶层，所述第一基板包括：多个块状的像素电极，所述第二基板包括：面状的公共电极；
所述驱动组件，被配置为：在所述液晶手写板处于擦除模式时，基于待擦除区域的位置信息，向所述待擦除区域内的像素电极施加像素电压，以使所述待擦除区域内的像素电极与所述公共电极之间形成电压差。
可选的，所述第一基板还包括：与所述驱动组件电连接的多个薄膜晶体管，所述像素电极与至少一个所述薄膜晶体管电连接。
可选的，所述薄膜晶体管包括：第一极和第二极，所述第一极包括U型结构，所述第二极包括条形结构，所述第二极一端位于所述U形结构内，另一端与所述像素电极电连接。
可选的，所述第一基板还包括：第一衬底，所述薄膜晶体管和所述像素电极均位于所述第一衬底上；
所述薄膜晶体管还包括：栅极、有源层图案和栅极绝缘层；
所述栅极位于所述有源层图案靠近所述第一衬底的一侧，所述栅极绝缘层位于所述栅极和所述有源层图案之间，所述第一极和所述第二极均位于所述有源层图案远离所述第一衬底的一侧，且所述第一极和所述第二极均与所述有源层图案搭接。
可选的，所述第一基板还包括：位于所述第一衬底上且延伸方向相交的数据线和栅线，所述数据线与所述第一极电连接，所述栅线与所述栅极电连接，所述数据线和所述栅线均与所述驱动组件电连接。
可选的，所述第一基板还包括：位于所述第一衬底上且与所述栅线同层设置的辅助电极线，所述辅助电极线与所述栅线的延伸方向相同。
可选的，所述第一基板还包括：位于所述薄膜晶体管上的第一平坦层，所述像素电极位于第一平坦层上，且与所述第一平坦层接触，所述第一平坦层具有过孔，所述像素电极通过所述过孔与所述第二极电连接。
可选的，所述第一基板还包括：位于所述像素电极上的第二平坦层。
可选的，所述液晶面板还包括：位于所述第一基板和所述第二基板之间的隔垫物。
可选的，所述液晶层包括：双稳态液晶分子。
另一方面，提供了一种手写装置，所述手写装置包括：
上述的液晶手写板，以及与所述液晶手写板中的驱动组件电连接的位置确定组件；
所述位置确定组件，被配置为：获取所述液晶手写板中的液晶面板的待擦除区域的位置信息，并将所述待擦除区域的位置信息发送给所述驱动组件。
可选的，所述手写装置还包括：与所述位置确定组件电连接的切换开关，所述切换开关被配置为：控制所述液晶手写板进行擦除模式和书写模式之间的切换；
所述位置确定组件还被配置为：在所述液晶手写板处于所述书写模式时，停止获取所述液晶面板的待擦除区域的位置信息。
可选的，所述位置确定组件包括：红外传感器。
又一方面，提供了一种手写装置的控制方法，应用于上述任一所述的手写 装置，所述手写装置的控制方法包括：
在所述液晶手写板处于擦除模式时，通过所述位置确定组件获取所述液晶手写板中的液晶面板的待擦除区域的位置信息，并将所述待擦除区域的位置信息发送给所述驱动组件；
基于所述待擦除区域的位置信息，通过所述驱动组件向所述待擦除区域内的像素电极施加像素电压，以使所述待擦除区域内的像素电极与所述公共电极之间形成电压差。
可选的，所述方法还包括：在所述液晶手写板处于书写模式时，控制所述位置确定组件停止获取所述液晶面板的待擦除区域的位置信息。
本申请实施例提供的技术方案带来的有益效果至少包括：
该液晶手写板包括：液晶面板和驱动组件。该液晶面板包括：相对设置的第一基板和第二基板，以及位于第一基板和第二基板之间的液晶层。由于该液晶面板中的第一基板内的像素电极为多个块状电极，因此，当该液晶手写板处于擦除模式时，与液晶面板电连接的驱动组件可以基于待擦除区域的位置信息，向待擦除区域内的块状的像素电极施加像素电压，以使待擦除区域的像素电极与公共电极之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，如此，可以实现对液晶手写板进行局部区域的擦除，提高液晶手写板的使用灵活性。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是相关技术提供的一种液晶手写板的膜层结构图；
图2是本申请实施例提供的一种液晶手写板的结构示意图；
图3是本申请实施例提供的一种液晶手写板中的液晶面板的膜层结构示意图；
图4是图3示出的液晶手写板中的液晶面板在薄膜晶体管区域处的俯视图；
图5是图3示出的液晶手写板中的液晶面板的俯视图；
图6是本申请实施例提供的另一种液晶手写板中的液晶面板的膜层结构示 意图；
图7是图6示出的液晶手写板中的液晶面板的俯视图；
图8是本申请实施例提供的又一种液晶手写板中的液晶面板的膜层结构示意图；
图9是本申请实施例提供的一种手写装置的结构示意图；
图10是本发明实施例提供的一种手写装置的控制方法的流程图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
在相关技术中，请参考图1，图1是相关技术提供的一种液晶手写板的膜层结构图。该液晶手写板00通常包括：相对设置的第一基板01和第二基板02，以及位于该第一基板01和第二基板02之间的液晶层03。第一基板01靠近第二基板03的一侧具有一个面状电极011，第二基板02靠近第一基板01的一侧具有一个面状电极021。且，该面状电极011和面状电极021均为整面的面状电极。
当液晶手写板00处于书写模式时，液晶层03中的部分液晶分子受外部压力的作用，会反射可见光，液晶手写板00显示书写笔迹；当液晶手写板00处于擦除模式时，液晶手写板00对位于液晶层03两侧的面状电极011和面状电极021施加电压，使得面状电极011和面状电极021之间形成电压差，进而使得液晶层03中的液晶分子在该电压差的作用下重新排列，以擦除液晶手写板显示的书写笔迹。
但是，由于第一基板01和第二基板02中的电极011和电极021均为整面的面状电极，因此，在液晶手写板00处于擦除模式时，液晶层03中的所有液晶分子均会在面状电极011和面状电极021之间的电压差的作用下重新排列，导致该液晶手写板00仅可以实现整面擦除，使用灵活性较低。
请参考图2，图2是本申请实施例提供的一种液晶手写板的结构示意图。该液晶手写板000可以包括：
液晶面板001和驱动组件002。
该液晶面板001可以包括：相对设置的第一基板100和第二基板200，以及位于第一基板100和第二基板200之间的液晶层300。该第一基板100可以包括： 多个块状的像素电极101，该第二基板200可以包括：面状的公共电极201。示例的，该多个块状的像素电极101呈矩阵状排列，公共电极201在第一基板100上正投影覆盖该多个块状的像素电极101所在区域。
该驱动组件002与液晶面板001电连接，该驱动组件002被配置为：在液晶手写板000处于擦除模式时，基于待擦除区域的位置信息，向待擦除区域内的像素电极101施加像素电压，以使待擦除区域内的像素电极101与公共电极201之间形成电压差。
综上所述，本申请实施例提供的液晶手写板，包括：液晶面板和驱动组件。该液晶面板包括：相对设置的第一基板和第二基板，以及位于第一基板和第二基板之间的液晶层。由于该液晶面板中的第一基板内的像素电极为多个块状电极，因此，当该液晶手写板处于擦除模式时，与液晶面板电连接的驱动组件可以基于待擦除区域的位置信息，向待擦除区域内的块状的像素电极施加像素电压，以使待擦除区域的像素电极与公共电极之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，如此，可以实现对液晶手写板进行局部区域的擦除，提高液晶手写板的使用灵活性。
在相关技术中，在液晶手写板处于擦除模式时，该液晶手写板需要对其内部的两个面状电极施加电压，由于该两个面状电极均为整面的面状电极，因此该液晶手写板需要通过加大的驱动电压，才能够将电压加载到整面的面状电极上，导致该液晶手写板的功耗较大，且会导致该液晶手写板的使用寿命降低。
而在本申请中，请参考图3，图3是本申请实施例提供的一种液晶手写板中的液晶面板的膜层结构示意图。该液晶面板001中的第一基板100还可以包括：与驱动组件002电连接的多个薄膜晶体管102(英文：Thin-film transistor；简称：TFT)，每个像素电极101可以与至少一个薄膜晶体管102电连接。如此，该驱动组件002可以通过多个薄膜晶体管102，选择性的对液晶面板001中的像素电极102施加像素电压，以实现对液晶面板001中的部分区域内的像素电极102施加像素电压，进而实现对处于擦除模式的液晶手写板000进行局部区域的擦除。并且，在液晶手写板000处于擦除模式时，无需向液晶面板001中的所有的像素电极101施加像素电压，且每个像素电极102上施加的像素电压通常较小，有效的降低了该液晶手写板000的功耗，且有效的提高了该液晶手写板000的使用寿命。
可选的，请参考图3和图4，图4是图3示出的液晶手写板中的液晶面板在 薄膜晶体管区域处的俯视图。该薄膜晶体管102可以包括：第一极102a和第二极102b。其中，该第一极102a可以为源极和漏极中的一个，该第二极102b可以为源极和漏极中的另一个。该第一极102a包括U型结构，该第二极102b包括条形结构，该第二极102b一端位于第一极102a中的U形结构内，另一端与像素电极101电连接。
示例的，如图4所示，该第一极102a具有：顺次连接的第一延伸部A、第二延伸部B和第三延伸部C。该第一极102a的第一延伸部A与第三延伸部C的延伸方向相同，且该第一极102a的第二延伸部B与第一延伸部A的延伸方向垂直，且与第三延伸部C的延伸方向垂直。如此，该顺次连接的第一延伸部A、第二延伸部B和第三延伸部C构成了第一极102a中的U型结构。
该第二极102b具有：位于第一电极102a的第一延伸部A与第三延伸部C之间的第一连接部D，以及与该第一连接部D连接的第二连接部E，其中，该第二极102b的第一连接部D为第二极102b中的条形结构，该第二极102b的第二连接部E为块状结构，且与像素电极101电连接。
在本申请实施例中，如图3和图4所示，该薄膜晶体管102还可以包括：与第一极102a和第二极102b搭接的有源层图案102c。当薄膜晶体管102中的第一极102a包括U型结构，第二极102b包括一端延伸至U型结构内的条状结构时，有源层图案102c的沟道区F为U型沟道区。需要说明的是，有源层图案102c的沟道区F是指：有源层图案102c中位于有源层图案102c与第一极102a接触的区域，和有源层图案102c与第二极102b接触的区域之间的区域。
当该薄膜晶体管102中的有源层图案102c的沟道区F为U型沟道区时，由于该U型沟道区具有较大的长宽比，因此，该薄膜晶体管102可承受较高的击穿电压，进一步的提高该液晶手写板000的使用寿命。
示例的，有源层图案102c的沟道区F具有延伸方向相同，且长度相同的两个第一长条区，以及用于连接该两个第一长条区的第二长条区。该第一长条区和第二长条区的宽度相同。在本申请中，该有源层图案102c的沟道区F的长度为两个第一长条区的长度之和，该沟道区F的宽度为第一长条区或第二长条区的宽度。
例如，该有源层图案102c的沟道区F的长宽比可以为50/4微米，如此，可以使薄膜晶体管102满足像素驱动所需电流的同时，能够承受较高的击穿电压。
在本申请实施例中，请参考图3，第一基板100还可以包括：第一衬底103， 薄膜晶体管102以及像素电极101均位于第一衬底103上。该薄膜晶体管102还可以包括：栅极102d和栅极绝缘层102e。其中，栅极102d位于有源层图案102c靠近第一衬底103的一侧，栅极绝缘层102e位于栅极102d和有源层图案102c之间，第一极102a和第二极102b均位于有源层图案102c远离第一衬底103的一侧，且第一极102a和第二极102b均与有源层图案102c搭接。也即是，该薄膜晶体管102为底栅型薄膜晶体管。在其他可能的实现方式中，该薄膜晶体管102还可以为顶栅型薄膜晶体管，本申请实施例对此不做限定。
可选的，该第一衬底103可以为玻璃衬底。
在本申请中，如图3和图5所示，图5是图3示出的液晶手写板中的液晶面板的俯视图。第一基板100还可以包括：位于第一衬底103上且延伸方向相交的数据线104和栅线105。该延伸方向相交的数据线104和栅线105可以在液晶面板001中限定出多个像素区域001a。示例的，任意两条相邻的数据线104与任意两条相邻的栅线105能够围成一个像素区域001a。该第一基板100上的每个像素电极101可以位于一个像素区域001a内。
可选的，该像素区域001a可以为长度和宽度均为1毫米的矩形区域。如此，可以减轻用户观察液晶面板时的眩晕感的同时，保证液晶面板001具有较高的分辨率。当该液晶面板101的分辨率较高时，液晶手写板000的最小可擦除区域(也即一个像素区域)的面积较小，有效的提高了该液晶手写板000的擦除精度。
在本申请实施例中，该数据线104与薄膜晶体管102中的第一极102a电连接，该栅线105与薄膜晶体管102中的栅极102d电连接。示例的，该数据线104与第一极102a和第二极102b同层设置，也即是，该数据线104与第一极102a和第二极102b是通过一次构图工艺形成的；该栅线105与栅极102d同层设置，也即是，该栅线105与栅极102d是通过一次构图工艺形成的。
可选的，数据线104与第一极102a和栅线105与栅极102d的厚度范围可以为350至450纳米，例如，该数据线104与第一极102a和栅线105与栅极102d的厚度可以均为400纳米。该数据线104和栅线105的材料均可以包括：诸如金属铝、金属钼或合金等金属材料。如此，可以降低数据线104和栅线105的电阻。
在本申请实施例中，该数据线104与栅线105均还与驱动组件002电连接。该驱动组件002可以包括：时序控制器(英文：Timing Controller；简称：TCON)、 源极驱动器(英文：Source Driver)和栅极驱动器(英文：Gate Driver)。示例的，该时序控制器分别与源极驱动器和栅极驱动器电连接，液晶面板001中的数据线104与该源极驱动器电连接，液晶面板001中的栅线105与该栅极驱动器电连接。
其中，时序控制器的主要功能是对待擦除区域的位置信息进行处理，以确定该待擦除区域中的各个像素电极的位置，并生成相应的数据信号和控制信号，数据信号被传送到源极驱动器，源极驱动器将所接收的数据信号转换成像素电压，通过数据线104，写入液晶面板001上相对应的像素区域。控制信号被传送到栅极驱动器，栅极驱动器将所接收的控制信号转换成栅极电压，通过与栅线105，写入液晶面板001上相对应的像素区域，从而实现对液晶面板001上的单个像素电极的独立控制。
可选的，该数据线104和栅线105的宽度范围可以为8至12微米，例如，该数据线104和栅线105的宽度可以均为10微米。如此，可以进一步的降低数据线104和栅线105的电阻，同时，可以降低因数据线104和栅线105反光，造成的液晶面板001上出现可视的网格线的概率，提高了液晶手写板000的显示效果。
可选的，多个块状的像素电极101之间的间距范围可以为18微米至22微米，例如，该多个块状的像素电极101之间的间距可以为20微米。如此，像素电极101与数据线104和栅线105之间的间距较大，可以降低像素电极101与数据线104和栅线105之间的寄生电容。
在本申请实施例中，请参考图6和图7，图6是本申请实施例提供的另一种液晶手写板中的液晶面板的膜层结构示意图，图7是图6示出的液晶手写板中的液晶面板的俯视图。第一基板100还可以包括：位于第一衬底103上且与栅线105同层设置的辅助电极线106。该辅助电极线106与栅线105的延伸方向相同。
示例的，第一基板100中的像素电极101排布为多行，该第一基板100中的辅助电极线106的条数为与像素电极101的行数相同。每条辅助电极线106在第一衬底103上的正投影，与对应的一行像素电极101在第一衬底103上的正投影交叠，该辅助电极线106可以与该一行像素电极101中的每个像素电极101构成存储电容。该存储电容可以用于保持像素电极101的充电电压，进一步的，当液晶手写板000处于擦除模式时，该存储电容可以避免擦除处的像素区 域001a的电压变化，影响其周围的像素区域001a的电压，进而避免了影像其周围的像素区域001a的显示效果。
示例的，请参考图3和图6，第一基板100还可以包括：位于薄膜晶体管102上的第一平坦层107，像素电极101位于第一平坦层107上，且与第一平坦层107接触，该第一平坦层107具有过孔a，像素电极101通过过孔a与第二极102b电连接。该第一平坦层107可以用于保护薄膜晶体管102。
在本申请实施例中，请参考图8，图8是本申请实施例提供的又一种液晶手写板中的液晶面板的膜层结构示意图。第一基板100还可以包括：位于像素电极101上的第二平坦层108。在将第一基板100与第二基板200相对设置时，由于设备环境非无尘环境，因此会导致第一基板100与第二基板200之间出现异物，通过该第二平坦层108可以用于防止位于第一基板100与第二基板200之间的异物，导通第一基板100中的像素电极101和第二基板200中的公共电极201。
在本申请实施例，请参考图3、图6和图8，液晶面板001还包括，位于第一基板100与第二基板200之间的隔垫物400。该隔垫物400可以用于隔离第一基板100和第二基板200，同时，该隔垫物400具有一定的弹性，可以使液晶手写板000受外部压力时，提供弹性形变，并且，该隔垫物400可以对液晶层300起到支撑作用，避免出现在按压液晶面板001时，液晶层300中的液晶分子的排列方式受到影响的问题，提高了液晶手写板000的显示效果。
在本申请实施例中，液晶层300包括：双稳态液晶分子。双稳态液晶分子具有平面织构状态(英文：Planar Texture；简称：P态)、焦锥织构状态(英文：Focal Conic Texture；简称：FC态)和垂直织构状态(英文：Hometropic Texture；简称：H态)。其中，P态和FC态是稳定状态，无需电压即可保持，H态为不稳定状态，在持续施加电压时呈现。当液晶手写板000受到外部压力时，液晶层300中的双稳态液晶分子在外部压力作用下翻转为P态，可以反射可见光，液晶面板001受到外部压力的区域显示书写的笔迹；当液晶手写板000中的驱动组件002向待擦除区域内的像素电极101施加像素电压时，待擦除区域内的像素电极101与公共电极201之间形成电压差，位于待擦除区域的双稳态液晶分子在该电压差的作用下，重新排列为FC态，不反射可见光，在这种情况下，待擦除区域内书写的笔迹可被擦除。
在本申请实施例中，如图3、图6和图8所示，第二基板200还可以包括： 第二衬底202。该第二衬底202为柔性衬底，该第二衬底202的材料可以包括：聚对苯二甲酸乙二醇酯(英文：Polyethylene Terephthalate；简称：PET)。公共电极201位于该第二衬底202上。
综上所述，本申请实施例提供的液晶手写板，包括：液晶面板和驱动组件。该液晶面板包括：相对设置的第一基板和第二基板，以及位于第一基板和第二基板之间的液晶层。由于该液晶面板中的第一基板内的像素电极为多个块状电极，因此，当该液晶手写板处于擦除模式时，与液晶面板电连接的驱动组件可以基于待擦除区域的位置信息，向待擦除区域内的块状的像素电极施加像素电压，以使待擦除区域的像素电极与公共电极之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，如此，可以实现对液晶手写板进行局部区域的擦除，提高液晶手写板的使用灵活性。
本申请实施例还提供了一种液晶面板的制造方法。该液晶面板的制造方法用于形成图8示出的液晶面板。该液晶面板的制造方法可以包括：
步骤A1、在第一衬底上形成栅极图案、栅极绝缘层、有源层图案、源漏极图形、第一平坦层、像素电极、以及第二平坦层，得到第一基板。
示例的，首先，在第一衬底上形成栅极层，并对该栅极层执行一次构图工艺以形成栅极图案。该栅极图案可以包括：栅极，以及与该栅极连接的栅线和辅助电极线。可选的，该第一衬底可以为玻璃衬底。该栅极图案的材料可以包括：金属铝、金属钼或合金等金属材料。其中，该栅线用于给栅极施加栅极电压。
之后，在形成有栅极图案的第一衬底上形成沉积栅极绝缘层。该栅极绝缘层用于保护栅线。可选的，该栅极绝缘层的材料可以包括：二氧化硅、氮化硅或者二氧化硅和氮化硅的混合材料。
之后，在形成有栅极绝缘层的第一衬底上形成有源材质薄膜，并对该有源材质薄膜执行一次构图工艺以形成有源层图案。可选的，该有源层图案的材料可以包括：多晶硅、非晶硅或氧化物半导体等半导体材料。
之后，在形成有有源层图案的第一衬底上形成源漏极材质层，并对该源漏极材质层执行一次构图工艺以形成源漏极图形。该源漏极图形可以包括：第一极、第二极和数据线。其中，该第一极可以为源极和漏极中的一个，该第二极可以为源极和漏极中的另一个。可选的，该源漏极图形的材料可以包括：金属 铝。
之后，在形成有源漏极图形的第一衬底上形成平坦薄膜，并对该平坦薄膜执行一次构图工艺以形成第一平坦层。该第一平坦层用于保护薄膜晶体管，且该第一平坦层具有过孔，后续形成的像素电极可以通过该过孔与源漏极图形中的第二极电连接。可选的，该第一平坦层的材料可以包括：二氧化硅、氮化硅或者二氧化硅和氮化硅的混合材料。
之后，在形成有第一平坦层的第一衬底上形成第一导电薄膜，并对该第以导电薄膜执行一次构图工艺以形成多个块状的像素电极。可选的，该多个块状的像素电极材料可以包括：氧化铟锡(英文：Indium Tin Oxide；简称：ITO)或氧化铟锌(英文：Indium Zinc Oxide；简称：IZO)等透明导电材料。
最后，在形成有像素电极的第一衬底上形成平坦薄膜，并对该平坦薄膜执行一次构图工艺以形成第二平坦层。
需要说明的是，通过上述过程可以形成第一基板。还需要说明的是，上述实施例中的一次构图工艺可以包括：光刻胶涂覆、曝光、显影、刻蚀和光刻胶剥离。
可选的，上述过程中，形成有源层图案和源漏极图形的两次构图工艺，可以通过使用半色调掩模版简化为一次构图工艺。
步骤A2、在第一基板上形成隔垫物和封胶框。
示例的，首先，在第一基板中的第二平坦层上形成有机物薄膜，并对该有机物薄膜执行一次构图工艺以形成隔垫物。
之后，在形成有隔垫物第一基板四周边缘处，涂覆封胶框材质，以形成封胶框。
需要说明的是，上述实施例中的一次构图工艺可以包括：光刻胶涂覆、曝光、显影、刻蚀和光刻胶剥离。
步骤A3、在第二衬底上形成公共电极，得到第二基板。
示例的，在第二衬底上形成第二导电薄膜，并对该第二导电薄膜执行一次构图工艺以形成公共电极。
其中，该第二衬底为柔性衬底，该第二衬底的材料可以包括：PET。该公共电极为面状电极，该公共电极的材料可以包括：ITO或IZO。
需要说明的是，通过上述过程可以形成第二基板。还需要说明的是，上述实施例中的一次构图工艺可以包括：光刻胶涂覆、曝光、显影、刻蚀和光刻胶 剥离。
步骤A4、向封胶框内灌入液晶分子，形成液晶层。
示例的，该液晶分子可以包括：双稳态液晶分子。
步骤A5、在液晶层上覆盖第二基板，使第二基板中的公共电极朝向第一基板，且第一基板中的像素电极朝向第二基板。
需要说明的是，通过上述步骤A1至步骤A5可以形成图8所示的液晶面板。
本申请实施例还提供了一种手写装置，请参考图9，图9是本申请实施例提供的一种手写装置的结构示意图。该手写装置包括：上述液晶手写板000和位置确定组件010。该位置确定组件010与液晶手写板000中的驱动组件电连接。
该位置确定组件010被配置为：获取液晶手写板000中的液晶面板的待擦除区域的位置信息，并将待擦除区域的位置信息发送给驱动组件。
如此，驱动组件在接收到待擦除区域的位置信息后，可以基于该待擦除区域的位置信息，向该待擦除区域内的像素电极施加像素电压，以使待擦除区域内的像素电极与公共电极之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，液晶面板中待擦除区域内的书写笔迹被擦除。
在本申请中，位置确定组件010可以包括：红外传感器。当液晶手写板000处于擦除模式时，该红外传感器可以向液晶手写板000的显示区域发射红外信号，从而检测液晶手写板000的显示区域中是否存在擦除工具，并可以确定该擦除工具在液晶手写板000的显示区域内的位置信息，该擦除工具在液晶手写板000的显示区域的位置可以视为该液晶手写板000的待擦除区域。示例的，该擦除工具可以为黑板擦。
在本申请实施例中，该手写装置还可以包括：切换开关020。该切换开关020与位置确定组件010电连接。该切换开关020被配置为：控制液晶手写板000进行擦除模式和书写模式之间的切换。位置确定组件010还被配置为：在液晶手写板000处于书写模式时，停止获取液晶面板的待擦除区域的位置信息。
示例的，该手写装置还可以包括：分别与切换开关020和位置确定组件010电连接的控制器。该控制器可以接收到切换开关020发出的控制指令，以控制位置确定组件010处于工作状态或非工作状态。例如，若控制器接收到切换开关020发出的用于控制液晶手写板000处于擦除模式的控制指令时，该控制器 可以控制位置确定组件010处于工作状态；若控制器接收到切换开关020发出的用于控制液晶手写板000处于书写模式的控制指令时，该控制器可以控制位置确定组件010处于非工作状态。
在本申请中，在液晶手写板000进行擦除模式和书写模式之间的切换可以有多种可实现方式，本申请实施例以以下两种可能的实现方式为例进行示意性说明。
在第一种可能的实现方式中，用户可以按动切换开关020，控制器可以控制该位置确定组件010处于工作状态，以使液晶手写板000处于擦除模式。在这种情况下，假设用户使用擦除工具在液晶手写板000上进行擦除操作时，通过该位置确定组件010可以确定该擦除工具在液晶手写板000的显示区域内的位置信息。其中，擦除工具在液晶手写板000的显示区域的位置可以视为该液晶手写板000的待擦除区域。如此，通过该位置确定组件010可以获取到待擦除区域的位置信息。之后，该位置确定组件010可以将待擦除区域的位置信息发送给驱动组件。如此，驱动组件可以基于该待擦除区域的位置信息，向该待擦除区域内的像素电极施加像素电压，以使待擦除区域内的像素电极与公共电极之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，液晶面板中待擦除区域内的书写笔迹被擦除。
当用户再次按动切换开关020，控制器可以控制该位置确定组件010处于非工作状态，以使液晶手写板000切换至书写模式。在这种情况下，位置确定组件010停止获取液晶面板的待擦除区域的位置信息，可以通过书写工具(例如，书写笔)在液晶手写板000上进行书写，液晶层300中的部分液晶分子受外部压力作用，液晶分子反转，反射可见光，液晶手写板000显示书写的笔迹。
在第二种可能的实现方式中，用户可以按动切换开关020，控制器可以控制该位置确定组件010处于工作状态，以使液晶手写板000处于擦除模式。在这种情况下，假设用户使用擦除工具在液晶手写板000上进行擦除操作时，通过该位置确定组件010可以确定该擦除工具在液晶手写板000的显示区域内的位置信息。其中，擦除工具在液晶手写板000的显示区域的位置可以视为该液晶手写板000的待擦除区域。如此，通过该位置确定组件010可以获取到待擦除区域的位置信息。之后，该位置确定组件010可以将待擦除区域的位置信息发送给驱动组件。如此，驱动组件可以基于该待擦除区域的位置信息，向该待擦除区域内的像素电极施加像素电压，以使待擦除区域内的像素电极与公共电极 之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，液晶面板中待擦除区域内的书写笔迹被擦除。
当在预设时长内，位置确定组件010未获取到待擦除区域的位置信息时，控制器可以控制该位置确定组件010处于非工作状态，以使液晶手写板000切换至书写模式。在这种情况下，停止获取液晶面板的待擦除区域的位置信息，可以通过书写笔等工具在液晶手写板000上书写，液晶层中的部分液晶分子受外部压力作用，液晶分子反转，反射可见光，液晶手写板000显示书写的笔迹。
可选的，该预设时长可以为1至5秒。
在另一种可能的实现方式中，该液晶手写板000的擦除模式还可以包括整面擦除模式。示例的，手写装置中的控制器还可以与液晶手写板000的驱动组件电连接，当控制器接收到切换开关020发出的用于控制液晶手写板000处于整面擦除模式的控制指令时，该控制器可以向驱动组件发送相应的整面擦除指令，使得驱动组件可以向液晶面板中的所有的像素电极施加像素电压，以使液晶面板中的所有像素电极与公共电极之间形成电压差，液晶层中的所有液晶分子在该电压差的作用下重新排列，液晶面板所有区域内的书写笔迹均被擦除。
需要说明的是，该用于控制液晶手写板000处于整面擦除模式的控制指令，可以是用户对切换开关020的长按操作时所触发的指令。
还需要说明的是，在液晶手写板000处于整面擦除模式时，还需要控制位置确定组件010停止获取液晶面板的待擦除区域的位置信息。
综上所述，本申请实施例提供的手写装置，通过切换开关控制液晶手写板在擦除模式和书写模式中切换，当该液晶手写板处于擦除模式时，与液晶面板电连接的驱动组件，基于位置确定组件获取的待擦除区域的位置信息，向待擦除区域内的块状的像素电极施加像素电压，以使待擦除区域的像素电极与公共电极之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，如此，可以实现对液晶手写板进行局部区域的擦除，提高液晶手写板的使用灵活性。
本申请实施例还提供了一种手写装置的控制方法，如图10所示，图10是本发明实施例提供的一种手写装置的控制方法的流程图。该手写装置的控制方法可以应用于上述实施例中的手写装置，例如，该手写装置可以为图9示出的手写装置。该手写装置的控制方法可以包括：
步骤1001、在液晶手写板处于擦除模式时，通过位置确定组件获取液晶手写板中的液晶面板的待擦除区域的位置信息，并将待擦除区域的位置信息发送给驱动组件。
在本申请实施例中，可以通过切换开关控制液晶手写板处于擦除状态。
步骤1002、基于待擦除区域的位置信息，通过驱动组件向待擦除区域内的像素电极施加像素电压，以使待擦除区域内的像素电极与公共电极之间形成电压差。
综上所述，本申请实施例提供的手写装置的控制方法，当该液晶手写板处于擦除模式时，与液晶面板电连接的驱动组件可以基于待擦除区域的位置信息，向待擦除区域内的块状的像素电极施加像素电压，以使待擦除区域的像素电极与公共电极之间形成电压差，进而使得液晶层中位于待擦除区域的液晶分子，在该电压差的作用下重新排列，如此，可以实现对液晶手写板进行局部区域的擦除，提高液晶手写板的使用灵活性。
可选的，该手写装置的控制方法还可以包括：
步骤B1、在液晶手写板处于书写模式时，控制位置确定组件停止获取液晶面板的待擦除区域的位置信息。
在本申请实施例中，可以通过切换开关控制液晶手写板进行擦除模式和书写模式之间的切换。
步骤B2、在液晶手写板处于整面擦除模式时，通过驱动组件向所有的像素电极施加像素电压，以使待擦除区域内的像素电极与公共电极之间形成电压差。
需要说明的是，在液晶手写板处于整面擦除模式时，还需要控制位置确定组件停止获取液晶面板的待擦除区域的位置信息。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的手写装置的控制方法的具体工作原理，可以参考前述手写装置的结构的实施例中的对应部分，在此不再赘述。
需要指出的是，在附图中，为了图示的清晰可能夸大了层和区域的尺寸。而且可以理解，当元件或层被称为在另一元件或层“上”时，它可以直接在其他元件上，或者可以存在中间的层。另外，可以理解，当元件或层被称为在另一元件或层“下”时，它可以直接在其他元件下，或者可以存在一个以上的中间的层或元件。另外，还可以理解，当层或元件被称为在两层或两个元件“之 间”时，它可以为两层或两个元件之间唯一的层，或还可以存在一个以上的中间层或元件。通篇相似的参考标记指示相似的元件。
如本文所述，术语“同层”是指在同一步骤中同时形成的层之间的关系，例如：当栅线与辅助电极线执行相同图案处理的一个或多个步骤而形成时，它们处于同层中。在另一个示例中，通过同时执行形成栅线与辅助电极线的步骤，可以在同一层中形成栅线与辅助电极线。术语“同层”并不总是意味着该层的厚度或横截面视图中的图层是相同的
在本申请中，术语“第一”和“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。术语“多个”指两个或两个以上，除非另有明确的限定。
以上所述仅为本申请的可选的实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种液晶手写板，其特征在于，包括：
    液晶面板，与所述液晶面板电连接的驱动组件；
    所述液晶面板，包括：相对设置的第一基板和第二基板，以及位于所述第一基板和所述第二基板之间的液晶层，所述第一基板包括：多个块状的像素电极，所述第二基板包括：面状的公共电极；
    所述驱动组件，被配置为：在所述液晶手写板处于擦除模式时，基于待擦除区域的位置信息，向所述待擦除区域内的像素电极施加像素电压，以使所述待擦除区域内的像素电极与所述公共电极之间形成电压差。
  2. 根据权利要求1所述的液晶手写板，其特征在于，所述第一基板还包括：与所述驱动组件电连接的多个薄膜晶体管，所述像素电极与至少一个所述薄膜晶体管电连接。
  3. 根据权利要求2所述的液晶手写板，其特征在于，所述薄膜晶体管包括：第一极和第二极，所述第一极包括U型结构，所述第二极包括条形结构，所述第二极一端位于所述U形结构内，另一端与所述像素电极电连接。
  4. 根据权利要求3所述的液晶手写板，其特征在于，所述第一基板还包括：第一衬底，所述薄膜晶体管和所述像素电极均位于所述第一衬底上；
    所述薄膜晶体管还包括：栅极、有源层图案和栅极绝缘层；
    所述栅极位于所述有源层图案靠近所述第一衬底的一侧，所述栅极绝缘层位于所述栅极和所述有源层图案之间，所述第一极和所述第二极均位于所述有源层图案远离所述第一衬底的一侧，且所述第一极和所述第二极均与所述有源层图案搭接。
  5. 根据权利要求4所述的液晶手写板，其特征在于，所述第一基板还包括：位于所述第一衬底上且延伸方向相交的数据线和栅线，所述数据线与所述第一极电连接，所述栅线与所述栅极电连接，所述数据线和所述栅线均与所述驱动 组件电连接。
  6. 根据权利要求5所述的液晶手写板，其特征在于，所述第一基板还包括：位于所述第一衬底上且与所述栅线同层设置的辅助电极线，所述辅助电极线与所述栅线的延伸方向相同。
  7. 根据权利要求4所述的液晶手写板，其特征在于，所述第一基板还包括：位于所述薄膜晶体管上的第一平坦层，所述像素电极位于第一平坦层上，且与所述第一平坦层接触，所述第一平坦层具有过孔，所述像素电极通过所述过孔与所述第二极电连接。
  8. 根据权利要求7所述的液晶手写板，其特征在于，所述第一基板还包括：位于所述像素电极上的第二平坦层。
  9. 根据权利要求1至8任一所述的液晶手写板，其特征在于，所述液晶面板还包括：位于所述第一基板和所述第二基板之间的隔垫物。
  10. 根据权利要求1至8任一所述的液晶手写板，其特征在于，所述液晶层包括：双稳态液晶分子。
  11. 一种手写装置，其特征在于，包括：权利要求1至10任一所述的液晶手写板，以及与所述液晶手写板中的驱动组件电连接的位置确定组件；
    所述位置确定组件，被配置为：获取所述液晶手写板中的液晶面板的待擦除区域的位置信息，并将所述待擦除区域的位置信息发送给所述驱动组件。
  12. 根据权利要求11所述的手写装置，其特征在于，所述手写装置还包括：与所述位置确定组件电连接的切换开关，所述切换开关被配置为：控制所述液晶手写板进行擦除模式和书写模式之间的切换；
    所述位置确定组件还被配置为：在所述液晶手写板处于所述书写模式时，停止获取所述液晶面板的待擦除区域的位置信息。
  13. 根据权利要求11所述的液晶手写板，其特征在于，所述位置确定组件包括：红外传感器。
  14. 一种手写装置的控制方法，其特征在于，应用于权利要求11至13任一所述的手写装置，所述方法包括：
    在所述液晶手写板处于擦除模式时，通过所述位置确定组件获取所述液晶手写板中的液晶面板的待擦除区域的位置信息，并将所述待擦除区域的位置信息发送给所述驱动组件；
    基于所述待擦除区域的位置信息，通过所述驱动组件向所述待擦除区域内的像素电极施加像素电压，以使所述待擦除区域内的像素电极与所述公共电极之间形成电压差。
  15. 根据权利要求14所述的控制方法，其特征在于，所述方法还包括：
    在所述液晶手写板处于书写模式时，控制所述位置确定组件停止获取所述液晶面板的待擦除区域的位置信息。
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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112327546B (zh) 2020-11-18 2023-11-03 京东方科技集团股份有限公司 液晶手写板、手写装置及手写装置的控制方法
CN113867024B (zh) * 2021-09-24 2023-12-08 京东方科技集团股份有限公司 液晶手写板、手写系统及手写系统的控制方法
WO2023050067A1 (zh) * 2021-09-28 2023-04-06 京东方科技集团股份有限公司 阵列基板、面板、手写板及其驱动方法
CN113934062B (zh) * 2021-10-25 2023-12-08 京东方科技集团股份有限公司 液晶手写板及其驱动方法
CN113848662B (zh) * 2021-11-12 2023-10-17 京东方科技集团股份有限公司 液晶手写板及其控制方法
CN114236927B (zh) * 2021-12-20 2023-10-17 京东方科技集团股份有限公司 感光基板及其驱动方法、液晶书写装置
CN114446254A (zh) * 2021-12-30 2022-05-06 锐捷网络股份有限公司 一种液晶手写板及系统
CN114647120B (zh) * 2022-03-14 2023-10-17 京东方科技集团股份有限公司 液晶手写板及其控制方法
CN117795410A (zh) * 2022-07-29 2024-03-29 京东方科技集团股份有限公司 液晶手写板及其制备方法
CN117957489A (zh) * 2022-08-31 2024-04-30 京东方科技集团股份有限公司 阵列基板及其制造方法、液晶面板
WO2024130463A1 (zh) * 2022-12-19 2024-06-27 京东方科技集团股份有限公司 液晶手写板及其修复方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017223374A1 (en) * 2016-06-22 2017-12-28 Fenghua Li Liquid crystal writing device with thermal erase
CN107820582A (zh) * 2015-04-28 2018-03-20 唯酷有限公司 液晶书写设备
WO2019227942A1 (zh) * 2018-05-30 2019-12-05 山东蓝贝思特教装集团股份有限公司 可实现局部擦除的液晶书写膜、局部擦除方法、多电压输出电路以及定位系统
WO2020000767A1 (zh) * 2018-06-28 2020-01-02 广州林登科技有限公司 一种可局部擦除的液晶书写装置及局部擦除方法
CN112180628A (zh) * 2020-09-11 2021-01-05 山东蓝贝思特教装集团股份有限公司 一种液晶书写装置、局部擦除方法及显示方法
CN112327546A (zh) * 2020-11-18 2021-02-05 京东方科技集团股份有限公司 液晶手写板、手写装置及手写装置的控制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010015723A1 (en) * 1998-05-01 2001-08-23 Hoi-Sing Kwok Method and apparatus for driving reflective bistable cholesteric displays
US6882012B2 (en) * 2000-02-28 2005-04-19 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and a method of manufacturing the same
KR20020042898A (ko) * 2000-12-01 2002-06-08 구본준, 론 위라하디락사 액정표시장치용 어레이기판과 그 제조방법
CN109597259A (zh) * 2019-01-30 2019-04-09 深圳市恒开源电子有限公司 可局部擦除的液晶手写板及擦除设备
CN111781754B (zh) * 2019-04-03 2021-11-09 江苏集萃智能液晶科技有限公司 一种可局部擦除的液晶手写板

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107820582A (zh) * 2015-04-28 2018-03-20 唯酷有限公司 液晶书写设备
WO2017223374A1 (en) * 2016-06-22 2017-12-28 Fenghua Li Liquid crystal writing device with thermal erase
WO2019227942A1 (zh) * 2018-05-30 2019-12-05 山东蓝贝思特教装集团股份有限公司 可实现局部擦除的液晶书写膜、局部擦除方法、多电压输出电路以及定位系统
WO2020000767A1 (zh) * 2018-06-28 2020-01-02 广州林登科技有限公司 一种可局部擦除的液晶书写装置及局部擦除方法
CN112180628A (zh) * 2020-09-11 2021-01-05 山东蓝贝思特教装集团股份有限公司 一种液晶书写装置、局部擦除方法及显示方法
CN112327546A (zh) * 2020-11-18 2021-02-05 京东方科技集团股份有限公司 液晶手写板、手写装置及手写装置的控制方法

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