WO2021179313A1 - 液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 - Google Patents
液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 Download PDFInfo
- Publication number
- WO2021179313A1 WO2021179313A1 PCT/CN2020/079321 CN2020079321W WO2021179313A1 WO 2021179313 A1 WO2021179313 A1 WO 2021179313A1 CN 2020079321 W CN2020079321 W CN 2020079321W WO 2021179313 A1 WO2021179313 A1 WO 2021179313A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- horizontal
- liquid crystal
- vertical
- module
- crystal writing
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to the field of liquid crystal writing films, in particular to a liquid crystal writing film circuit structure, a liquid crystal writing film and a liquid crystal writing board.
- an external drive circuit is required to select one of a number of different voltages and apply it to the corresponding electrode, and to ensure that the voltage of the electrode can be stabilized at the expected voltage value for at least 20ms, so each electrode At least 8 diodes (transistors) and ICs are required, resulting in a very complicated circuit structure and expensive manufacturing costs, and multiple diodes will also cause the circuit to consume more energy and become larger in size. Therefore, there is an urgent need for a locally erasable liquid crystal writing film circuit structure with a simple circuit structure.
- the main purpose of the present invention is to provide a circuit structure of a liquid crystal writing film, a liquid crystal writing film and a liquid crystal writing board thereof, aiming to solve the technical problem of complicated circuit structure caused by the need to arrange a plurality of diodes.
- the present invention provides a liquid crystal writing film circuit structure, including: a plurality of horizontal electrodes, a voltage source module, a plurality of vertical electrodes, a main control circuit, and a driving IC module and an operational amplifier module controlled by the main control circuit;
- the operational amplifier module includes a plurality of horizontal operational amplifiers and a plurality of vertical operational amplifiers, and the horizontal operational amplifiers are electrically connected to the vertical operational amplifiers and the drive IC module;
- the horizontal electrode is electrically connected with the output terminal of the horizontal operational amplifier
- the vertical electrode is electrically connected with the output terminal of the vertical operational amplifier
- the drive IC module is connected to the voltage source module, the voltage source module is used to output a plurality of different voltages to the drive IC module, and the drive IC module is used to control the level through the horizontal operational amplifier
- the electrodes output different voltages and the vertical operational amplifiers are used to control the vertical electrodes to output different voltages.
- the voltage source module includes a positive voltage source and a negative voltage source, and the positive voltage source and the negative voltage source are connected to the driving IC module.
- the voltage source module further includes a voltage dividing unit, and the positive voltage source and the negative voltage source are respectively connected to the driving IC module after the voltage dividing unit.
- the driving IC module includes a horizontal driving IC and a vertical driving IC, the horizontal driving IC and the vertical driving IC are controlled by the main control circuit, the horizontal driving IC and a plurality of the horizontal operational amplifiers Electrically connected, the horizontal drive IC is used to control the output voltages of a plurality of the horizontal operational amplifiers, the vertical drive IC is connected to the vertical operational amplifiers, and the vertical drive IC is used to control the output voltages of a plurality of the vertical operational amplifiers Voltage.
- the horizontal driving IC is connected to the same direction input terminal of the horizontal operational amplifier, the inverting input terminal of the horizontal operational amplifier is connected to the output terminal, and the output terminal of the horizontal operational amplifier is connected to the horizontal operational amplifier. Electrode connection.
- a plurality of the horizontal operational amplifiers or a plurality of vertical operational amplifiers are integratedly arranged on a PCB board.
- the horizontal operational amplifier includes four output terminals, and the four output terminals are all used to connect the horizontal electrodes.
- the vertical operational amplifier includes four output terminals, and the four output terminals are all used to connect the vertical electrodes.
- the driving IC module is any one of an LCD driving IC module, a VFD driving IC module, a TFT/OLDE, and a plasma driving IC module.
- the present invention also provides a liquid crystal writing film, comprising a cholesteric liquid crystal and the above-mentioned liquid crystal writing film circuit structure, a plurality of the horizontal electrodes and a plurality of the vertical electrodes are arranged side by side, and a plurality of horizontal electrodes And a plurality of the vertical electrodes are respectively arranged on both sides of the cholesteric liquid crystal, and are in contact and connected with the cholesteric liquid crystal.
- it further includes a plurality of substrates, the substrates are respectively arranged on a side of the horizontal electrode away from the cholesteric liquid crystal and a side of the vertical electrode away from the cholesteric liquid crystal.
- the present invention also provides a liquid crystal writing board, which comprises the above-mentioned liquid crystal writing film.
- the driver IC and multiple horizontal operational amplifiers and multiple vertical operational amplifiers By setting the driver IC and multiple horizontal operational amplifiers and multiple vertical operational amplifiers, the corresponding connection of the horizontal electrode and the vertical electrode can release the different voltage values of the user in writing, partial erasing and full erasing.
- the horizontal amplifier and the vertical amplifier also solve the technical problem of complicated structure caused by the traditional writing film with local erasing function, which requires multiple diodes and transistors.
- the driver IC and multiple horizontal operational amplifiers and multiple vertical operational amplifiers are provided. It ensures that when the horizontal electrode and the vertical electrode can output different voltage values, compared with the traditional setting, the circuit structure is simplified, and the energy consumption is also reduced, making the liquid crystal writing film more portable and lower energy consumption.
- Figure 1 is a circuit diagram of an embodiment of the circuit structure of the liquid crystal writing film of the present invention.
- Figure 2 is a schematic structural view of an embodiment of the liquid crystal writing film of the present invention.
- Figure 3 is a structural side view of an embodiment of the liquid crystal writing film of the present invention.
- FIG. 4 is a circuit diagram of an embodiment of a voltage source module, a driver IC module, and an operational amplifier module of the liquid crystal writing film circuit structure of the present invention.
- connection may be a direct connection or an indirect connection.
- the present invention proposes a liquid crystal writing film circuit structure, including: a plurality of horizontal electrodes 13, a voltage source module 5, a plurality of vertical electrodes 23, a main control circuit 4 and controlled by the main control circuit 4
- the operational amplifier module includes a plurality of horizontal operational amplifiers 11 and a plurality of vertical operational amplifiers 21, the horizontal operational amplifier 11 and the vertical operational amplifier 21 are electrically connected to the drive IC module 3;
- the horizontal electrode 13 and the horizontal operational amplifier 11 The output terminal is electrically connected, the vertical electrode 23 is electrically connected to the output terminal of the vertical operational amplifier 21;
- the driving IC module 3 is connected to the voltage source module 5, and the voltage source module 5 is used to output a plurality of different voltages to the driving IC module 3, and the driving IC
- the module 3 is used to control the horizontal electrode 13 to output different voltages through the horizontal operational amplifier 11 and to control the vertical electrode 23 to output different voltages through the vertical operational amplifier 21.
- the driver IC and multiple horizontal operational amplifiers 11 and multiple vertical operational amplifiers 21 by setting the driver IC and multiple horizontal operational amplifiers 11 and multiple vertical operational amplifiers 21, the corresponding connection of the horizontal electrodes 13 and the vertical electrodes 23 can release the difference between the user's writing, partial erasing, and full erasing.
- the voltage value in addition, by setting the driver IC and horizontal amplifier and vertical amplifier, it also solves the technical problem of complicated structure caused by the traditional writing film that requires multiple diodes and transistors.
- this application sets the driver IC and multiple horizontal operational amplifiers.
- multiple vertical operational amplifiers 21 to ensure that when the horizontal electrode 13 and the vertical electrode 23 can output different voltage values, compared with the traditional setting, the circuit structure is simplified, the energy consumption is also reduced, and the liquid crystal writing film is more portable , Lower energy consumption.
- the voltage source module 5 includes a positive voltage source 51 and a negative voltage source 52, and the positive voltage source 51 and the negative voltage source 52 are connected to the driving IC module 3.
- the positive voltage source 51 is attached to the horizontal electrode 13
- the negative voltage source 52 is attached to the vertical electrode 23 (or a positive power source is attached to the vertical electrode).
- the negative voltage source 52 is attached to the horizontal electrode 13) to facilitate the erasing function.
- Vp is the voltage threshold required for the transition from the P state to the FC state of the cholesteric liquid crystal, which is greater than this voltage and the liquid crystal gradually starts to transition.
- Vp the voltage peak value of the transition from the P state to the FC state of the cholesteric liquid crystal
- the voltage source module 5 further includes a voltage dividing unit, and the positive voltage source 51 and the negative voltage source 52 are respectively connected to the driving IC module 3 through the voltage dividing unit. It is also possible to set only two voltage sources, namely a positive voltage source 51 and a negative voltage source 52, and then divide the voltage source through the voltage divider unit to achieve the output of four or more voltage sources.
- the voltage divider unit can It can be realized by a resistor, or it can be realized by an operational amplifier, which is not limited in this application, and the various electronic components and their combinations that can be used to divide the voltage source are all within the protection scope of this application.
- the drive IC module 3 includes a horizontal drive IC and a vertical drive IC.
- the horizontal drive IC and the vertical drive IC are controlled by the main control circuit 4.
- the horizontal drive IC is electrically connected to a plurality of horizontal operational amplifiers 11, and the horizontal drive IC is used for To control the output voltage of the multiple horizontal operational amplifiers 11, the vertical drive IC is connected to the vertical operational amplifier 21, and the vertical drive IC is used to control the output voltage of the multiple vertical operational amplifiers 21.
- the horizontal electrodes 13 and the vertical electrodes 23 can be implemented using different drive ICs to reduce the complexity of the drive ICs and save costs. In another embodiment, it can also be implemented using only one drive IC. However, if only one driver IC is used, the structure of the driver IC will be quite complicated and the cost will increase. Therefore, it is preferable to use two driver ICs (ie, horizontal driver IC31 and vertical driver IC32). Separate.
- the horizontal driving IC 31 is connected to the same direction input terminal of the horizontal operational amplifier 11, the reverse input terminal of the horizontal operational amplifier 11 is connected to the output terminal, and the output terminal of the horizontal operational amplifier 11 is connected to the horizontal electrode 13.
- the vertical driving IC 32 is also connected to the same direction input terminal of the vertical operational amplifier 21, the reverse input terminal of the vertical operational amplifier 21 is connected to the output terminal, and the output terminal of the vertical operational amplifier 21 is connected to the vertical electrode 23, thereby realizing horizontal control.
- the input of the voltage of the electrode 13 and the vertical electrode 23 enables the horizontal electrode 13 and the vertical electrode 23 to output corresponding voltages.
- multiple horizontal operational amplifiers 11 or vertical operational amplifiers 21 are integrated on one PCB board.
- multiple horizontal operational amplifiers 11 can be integrated on a PCB board, which can also make subsequent processing more convenient.
- multiple vertical operational amplifiers 21 can also be integrated on a PCB board, so that the writing film becomes more portable.
- the horizontal operational amplifier 11 includes four output terminals, and the four output terminals are all used to connect the horizontal electrode 13.
- the horizontal operational amplifier 11 includes four output terminals so that it can be connected to four horizontal electrodes 13 without requiring one horizontal electrode 13 to correspond to one horizontal operational amplifier 11, which further saves circuit components and makes the structure simpler and lighter.
- only one of the four output terminals or part of the output terminals may be connected to the horizontal electrode, which depends on the overall design scheme, so that the overall structure is unnecessary.
- the driving IC is any one of the LCD driving IC module 3, the VFD driving IC module 3, the TFT/OLDE, and the plasma driving IC module 3.
- the horizontal driving IC 31 and the vertical driving IC 32 may be any one of the above-mentioned driving ICs, and the above-mentioned driving ICs can all realize the technical solution of the present application.
- the present invention also provides a liquid crystal writing film, including a cholesteric liquid crystal 101 and the above-mentioned liquid crystal writing film circuit structure, a plurality of horizontal electrodes 13 and a plurality of vertical electrodes 23 are arranged side by side, respectively A plurality of horizontal electrodes 13 and a plurality of vertical electrodes 23 are respectively arranged on both sides of the cholesteric liquid crystal 101 and connected to the cholesteric liquid crystal 101.
- the plane formed by the multiple horizontal electrodes 13 and the plane formed by the multiple vertical electrodes 23 are parallel to each other, so that the cholesteric liquid crystal 101 disposed therebetween can react accordingly under the voltage applied at both ends
- setting the two planes parallel to each other can also make the structure more beautiful.
- the horizontal electrodes 13 and the vertical electrodes 23 are arranged perpendicular to each other. Only when the horizontal electrodes 13 and the vertical electrodes 23 at both ends of the cholesteric liquid crystal 101 are at the erasing voltage, they will be erased. Therefore, it is convenient to perform partial erasing.
- the cholesteric liquid crystal 101 in the middle of the intersection has a rhombus shape, that is, the part that is partially erased is the rhombus part, which makes the user experience more fresh. It also makes the shape of the erased part more beautiful.
- a plurality of substrates 100 are further included, and the plurality of substrates 100 are respectively disposed on the side of the horizontal electrode 13 away from the cholesteric liquid crystal 101 and the side of the vertical electrode 23 away from the cholesteric liquid crystal 101.
- the present invention also provides a liquid crystal writing board, which comprises the above-mentioned liquid crystal writing film.
- the beneficial effects of the present invention by providing a driver IC and a plurality of horizontal operational amplifiers 11 and a plurality of vertical operational amplifiers 21, the corresponding connection of the horizontal electrode 13 and the vertical electrode 23 can release the user's writing, partial erasing and full erasing.
- Different voltage values in addition, by setting the driver IC and horizontal amplifier and vertical amplifier, it also solves the technical problem of complex structure caused by the need to install multiple diodes and transistors in the traditional writing film.
- this application sets the driver IC and multiple horizontal operational amplifiers. 11 and multiple vertical operational amplifiers 21, to ensure that when the horizontal electrode 13 and the vertical electrode 23 can output different voltage values, compared with the traditional setting, the circuit structure is simplified, the energy consumption is also reduced, and the liquid crystal writing film is more Lightweight and lower energy consumption.
Abstract
一种液晶书写膜片电路结构、液晶书写膜片及其液晶书写板，包括：多个水平电极（13）、电压源模块（5）、多个垂直电极（23）、主控电路（4）以及受控于主控电路（4）的驱动IC模块（3）；运算放大器模块包括多个水平运算放大器（11）和多个垂直运算放大器（21），水平运算放大器（11）与垂直运算放大器（21）与驱动IC模块（3）电连接；水平电极（13）与水平运算放大器（11）的输出端电连接，垂直电极（23）与垂直运算放大器（21）的输出端电连接，从而保证在水平电极（13）和垂直电极（23）输出不同的电压值的同时，精简了电路结构，也减少了能源的消耗，使液晶书写膜片更加轻便、耗能更低。
Description
本发明涉及液晶书写膜领域，特别涉及一种液晶书写膜片电路结构、液晶书写膜片及其液晶书写板。
为了实现书写膜局部擦除，需要外部的驱动电路从多个不同的电压中选择其中一个电压施加到对应的电极上，并且为了保证电极的电压能稳定在预期电压值至少20ms，因而每个电极至少需要8个二三极管（晶体三极管）和IC，导致电路结构非常复杂，制造成本昂贵，且多个二三极管也会导致电路的能耗、体积比较大。因此亟需一种电路结构简单的可局擦的液晶书写膜片电路结构。
本发明的主要目的为提供一种液晶书写膜片电路结构、液晶书写膜片及其液晶书写板，旨在解决因需要设置多个二三极管带来电路结构复杂的技术问题。
本发明提供了一种液晶书写膜片电路结构，包括：多个水平电极、电压源模块、多个垂直电极、主控电路以及受控于所述主控电路的驱动IC模块、运算放大器模块；
所述运算放大器模块包括多个水平运算放大器和多个垂直运算放大器，所述水平运算放大器与所述垂直运算放大器与所述驱动IC模块电连接；
所述水平电极与所述水平运算放大器的输出端电连接，所述垂直电极与所述垂直运算放大器的输出端电连接；
所述驱动IC模块与所述电压源模块连接、所述电压源模块用于输出多个不同的电压至所述驱动IC模块，所述驱动IC模块用于通过所述水平运算放大器控制所述水平电极输出不同的电压以及通过所述垂直运算放大器控制所述垂直电极输出不同的电压。
进一步地，所述电压源模块包括正电压源和负电压源，所述正电压源和所述负电压源与所述驱动IC模块连接。
进一步地，所述电压源模块还包括分压单元，所述正电压源和所述负电压源分别经所述分压单元后与所述驱动IC模块连接。
进一步地，所述驱动IC模块包括水平驱动IC和垂直驱动IC，所述水平驱动IC和所述垂直驱动IC受控于所述主控电路，所述水平驱动IC与多个所述水平运算放大器电连接，所述水平驱动IC用于控制多个所述水平运算放大器输出电压，所述垂直驱动IC与所述垂直运算放大器连接，所述垂直驱动IC用于控制多个所述垂直运算放大器输出电压。
进一步地，所述水平驱动IC与所述水平运算放大器的同向输入端连接，所述水平运算放大器的反向输入端与所述输出端连接，所述水平运算放大器的输出端与所述水平电极连接。
进一步地，多个所述水平运算放大器或多个垂直运算放大器集成设置于一个PCB板上。
进一步地，所述水平运算放大器包括四个输出端，该四个输出端均用于连接所述水平电极。
进一步地，所述垂直运算放大器包括四个输出端，该四个输出端均用于连接所述垂直电极。
进一步地，所述驱动IC模块为LCD驱动IC模块、VFD驱动IC模块、TFT/OLDE、等离子驱动IC模块中的任意一种。
本发明还提供了一种液晶书写膜片，包括胆甾相液晶和上述所述的液晶书写膜片电路结构，多个所述水平电极和多个所述垂直电极分别并排排列，多个水平电极和多个所述垂直电极分别设置在所述胆甾相液晶的两侧，并与所述胆甾相液晶接触连接。
进一步地，还包括多块基板，所述基板分别设置在所述水平电极远离所述胆甾相液晶的一侧和所述垂直电极远离所述胆甾相液晶的一侧。
本发明还提供了一种液晶书写板，包括上述所述的液晶书写膜片。
通过设置驱动IC和多个水平运算放大器和多个垂直运算放大器，使对应连接水平电极和垂直电极可以释放出用户在书写、局部擦除和全部擦除的不同电压值，另外，通过设置驱动IC和水平放大器和垂直放大器也解决了传统的带局擦功能书写膜需要设置多个二三极管带来结构复杂的技术问题，而本申请通过设置驱动IC和多个水平运算放大器和多个垂直运算放大器，保证了在水平电极和垂直电极可以输出不同的电压值时，相对于传统的设置，精简了电路结构，也减少了能源的消耗，使液晶书写膜更加轻便、耗能更低。
图1 是本发明液晶书写膜片电路结构一实施例的电路图；
图2 是本发明液晶书写膜片一实施例的结构示意图；
图3 是本发明液晶书写膜片一实施例的结构侧视图；
图4 是本发明液晶书写膜片电路结构电压源模块、驱动IC模块以及运算放大器模块一实施例的电路图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示（诸如上、下、左、右、前、后等）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变，所述的连接可以是直接连接，也可以是间接连接。
本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
参照图1和图4，本发明提出一种液晶书写膜片电路结构，包括：多个水平电极13、电压源模块5、多个垂直电极23、主控电路4以及受控于主控电路4的驱动IC模块3；运算放大器模块包括多个水平运算放大器11和多个垂直运算放大器21，水平运算放大器11与垂直运算放大器21与驱动IC模块3电连接；水平电极13与水平运算放大器11的输出端电连接，垂直电极23与垂直运算放大器21的输出端电连接；驱动IC模块3与电压源模块5连接、电压源模块5用于输出多个不同的电压至驱动IC模块3，驱动IC模块3用于通过水平运算放大器11控制水平电极13输出不同的电压以及通过垂直运算放大器21控制垂直电极23输出不同的电压。
本实施例中，通过设置驱动IC 和多个水平运算放大器11和多个垂直运算放大器21，使对应连接水平电极13和垂直电极23可以释放出用户在书写、局部擦除和全部擦除的不同电压值，另外，通过设置驱动IC和水平放大器和垂直放大器也解决了传统的书写膜需要设置多个二三极管带来结构复杂的技术问题，而本申请通过设置驱动IC和多个水平运算放大器11和多个垂直运算放大器21，保证了在水平电极13和垂直电极23可以输出不同的电压值时，相对于传统的设置，精简了电路结构，也减少了能源的消耗，使液晶书写膜更加轻便、耗能更低。
参照图4，本实施例中，电压源模块5包括正电压源51和负电压源52，正电压源51和负电压源52与驱动IC模块3连接。为了实现用户擦除功能，一般需要设置正电压源51和负电压源52，正电压源51附加在水平电极13上，负电压源52附加在垂直电极23上（也可以是正电源附加在垂直电极23上，负电压源52附加在水平电极13上），以便于实现擦除功能，具体地，为了便于用户的书写、局部擦除以及全部擦除，一般需要设置四个电压源、分别为Vp，1/3Vp，-1/3Vp，-Vp，且Vp>Vth>1/3Vp，（其中Vth为胆甾相液晶P态向FC态转变需要的电压阈值，大于此电压液晶逐步开始转变状态，小于此电压液晶不会发生状态变化；Vp：胆甾相液晶P态向FC态转变的电压峰值），当某一点（选通点或擦除点）需要擦除时，只需要水平电极13和垂直电极23分别连接到Vp和-Vp，该点就可以实现擦除。
本实施例中，电压源模块5还包括分压单元，正电压源51和负电压源52分别经分压单元后与驱动IC模块3连接。也可以只设置两个电压源、即正电压源51和负电压源52，再通过分压单元对电压源进行分压，就能实现四个甚至更多的电压源的输出，分压单元可以通过电阻来实现，也可以通过运算放大器进行实现，本申请对此不做限定，可以用于实现对电压源进行分压的各电子元件及其组合均在本申请的保护范围内。
本实施例中，驱动IC模块3包括水平驱动IC和垂直驱动IC，水平驱动IC和垂直驱动IC受控于主控电路4，水平驱动IC与多个水平运算放大器11电连接，水平驱动IC用于控制多个水平运算放大器11输出电压，垂直驱动IC与垂直运算放大器21连接，垂直驱动IC用于控制多个垂直运算放大器21输出电压。
本实施例中，水平电极13和垂直电极23可以使用不同的驱动IC进行实现，以减小驱动IC的复杂程度以及节约成本，在另一个实施例中，也可以只用一个驱动IC进行实现，但是只使用一个驱动IC，该驱动IC的结构会相当复杂，成本也会增加，故优选使用两个驱动IC（即水平驱动IC31和垂直驱动IC32），将垂直电极23和水平电极13的驱动IC分开。
本实施例中，水平驱动IC31与水平运算放大器11的同向输入端连接，水平运算放大器11的反向输入端与输出端连接，水平运算放大器11的输出端与水平电极13连接。同理，垂直驱动IC32也与垂直运算放大器21的同向输入端连接，垂直运算放大器21的反向输入端与输出端连接，垂直运算放大器21的输出端与垂直电极23连接，从而实现控制水平电极13和垂直电极23的电压的输入，使水平电极13和垂直电极23可以输出对应的电压。
本实施例中，多个水平运算放大器11或垂直运算放大器21集成设置于一个PCB板上。为了使加工后的书写膜更加的轻便，可以将多个水平运算放大器11集成设置于一个PCB板上，也能使后续的加工更加的方便。同理，多个垂直运算放大器21也可以集成设置于一个PCB板上，使书写膜进一步变得轻便。
本实施例中，水平运算放大器11包括四个输出端，该四个输出端均用于连接水平电极13。水平运算放大器11包括四个输出端，使其可以连接四个水平电极13，而无需一个水平电极13对应一个水平运算放大器11，进一步节省了电路元件，使结构更加简单，轻便。在一些实施例中，四个输出端也可以只有一个或者部分输出端连接水平电极，这取决于整体的设计方案，使整体结构不赘余。
本实施例中，驱动IC为LCD驱动IC模块3、VFD驱动IC模块3、TFT/OLDE、等离子驱动IC模块3中的任意一种。水平驱动IC31和垂直驱动IC32可以为上述驱动IC中的任意一种，上述驱动IC均能实现本申请的技术方案。
参照图1-3，本发明还提供了一种液晶书写膜片，包括胆甾相液晶101和上述所述的液晶书写膜片电路结构，多个水平电极13和多个垂直电极23分别并排排列，多个水平电极13和多个垂直电极23分别设置在胆甾相液晶101的两侧，并与胆甾相液晶101连接。
本实施例中，多个水平电极13构成的平面与多个垂直电极23构成的平面相互平行，使设置在其之间的胆甾相液晶101可以在两端施加的电压下做出相应的反应，另外，将两个平面设置成相互平行也可以使结构更加美观。另外，水平电极13和垂直电极23相互垂直设置，只有胆甾相液晶101两端水平电极13和垂直电极23都为擦除电压时才会擦除，故而可以便于进行局部擦除，在另一个实施例中，也可以不设置成垂直，也可以交叉设置，使其相交的中间的胆甾相液晶101为菱形的形状，即局部擦除的部分为该菱形部分，使用户的体验更加有新鲜感，也使得擦除部分的形状更美观。
本实施例中，还包括多块基板100，多块基板100分别设置在水平电极13远离胆甾相液晶101的一侧和垂直电极23远离胆甾相液晶101的一侧。
本发明还提供了一种液晶书写板，包括上述所述的液晶书写膜片。
本发明的有益效果：通过设置驱动IC和多个水平运算放大器11和多个垂直运算放大器21，使对应连接水平电极13和垂直电极23可以释放出用户在书写、局部擦除和全部擦除的不同电压值，另外，通过设置驱动IC和水平放大器和垂直放大器也解决了传统的书写膜需要设置多个二三极管带来结构复杂的技术问题，而本申请通过设置驱动IC和多个水平运算放大器11和多个垂直运算放大器21，保证了在水平电极13和垂直电极23可以输出不同的电压值时，相对于传统的设置，精简了电路结构，也减少了能源的消耗，使液晶书写膜更加轻便、耗能更低。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的权利要求范围之内。
Claims (12)
- 一种液晶书写膜片电路结构，其特征在于，包括：多个水平电极、电压源模块、多个垂直电极、主控电路以及受控于所述主控电路的驱动IC模块、运算放大器模块；所述运算放大器模块包括多个水平运算放大器和多个垂直运算放大器，所述水平运算放大器与所述垂直运算放大器与所述驱动IC模块电连接；所述水平电极与所述水平运算放大器的输出端电连接，所述垂直电极与所述垂直运算放大器的输出端电连接；所述驱动IC模块与所述电压源模块连接、所述电压源模块用于输出多个不同的电压至所述驱动IC模块，所述驱动IC模块用于通过所述水平运算放大器控制所述水平电极输出不同的电压以及通过所述垂直运算放大器控制所述垂直电极输出不同的电压。
- 如权利要求1所述的液晶书写膜片电路结构，其特征在于，所述电压源模块包括正电压源和负电压源，所述正电压源和所述负电压源与所述驱动IC模块连接。
- 如权利要求2所述的液晶书写膜片电路结构，其特征在于，所述电压源模块还包括分压单元，所述正电压源和所述负电压源分别经所述分压单元后与所述驱动IC模块连接。
- 如权利要求1所述的液晶书写膜片电路结构，其特征在于，所述驱动IC模块包括水平驱动IC和垂直驱动IC，所述水平驱动IC和所述垂直驱动IC受控于所述主控电路，所述水平驱动IC与多个所述水平运算放大器电连接，所述水平驱动IC用于控制多个所述水平运算放大器输出电压，所述垂直驱动IC与所述垂直运算放大器连接，所述垂直驱动IC用于控制多个所述垂直运算放大器输出电压。
- 如权利要求4所述的液晶书写膜片电路结构，其特征在于，所述水平驱动IC与所述水平运算放大器的同向输入端连接，所述水平运算放大器的反向输入端与所述输出端连接，所述水平运算放大器的输出端与所述水平电极连接。
- 如权利要求1所述的液晶书写膜片电路结构，其特征在于，多个所述水平运算放大器或多个垂直运算放大器集成设置于一个PCB板上。
- 如权利要求1所述的液晶书写膜片电路结构，其特征在于，所述水平运算放大器包括四个输出端，该四个输出端均用于连接所述水平电极。
- 如权利要求1所述的液晶书写膜片电路结构，其特征在于，所述垂直运算放大器包括四个输出端，该四个输出端均用于连接所述垂直电极。
- 如权利要求1所述的液晶书写膜片电路结构，其特征在于，所述驱动IC模块为LCD驱动IC模块、VFD驱动IC模块、TFT/OLDE、等离子驱动IC模块中的任意一种。
- 一种液晶书写膜片，其特征在于，包括胆甾相液晶和权利要求1-8任一项所述的液晶书写膜片电路结构，多个所述水平电极和多个所述垂直电极分别并排排列，多个水平电极和多个所述垂直电极分别设置在所述胆甾相液晶的两侧，并与所述胆甾相液晶接触连接。
- 如权利要求10所述的液晶书写膜片，其特征在于，还包括多块基板，所述基板分别设置在所述水平电极远离所述胆甾相液晶的一侧和所述垂直电极远离所述胆甾相液晶的一侧。
- 一种液晶书写板，其特征在于，包括权利要求10或11所述的液晶书写膜片。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/079321 WO2021179313A1 (zh) | 2020-03-13 | 2020-03-13 | 液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/079321 WO2021179313A1 (zh) | 2020-03-13 | 2020-03-13 | 液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021179313A1 true WO2021179313A1 (zh) | 2021-09-16 |
Family
ID=77671178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2020/079321 WO2021179313A1 (zh) | 2020-03-13 | 2020-03-13 | 液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2021179313A1 (zh) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60188928A (ja) * | 1984-03-09 | 1985-09-26 | Toshiba Corp | 熱書き込み形液晶表示装置 |
| JPH04195624A (ja) * | 1990-11-28 | 1992-07-15 | Sharp Corp | 手書き入力表示装置 |
| JPH09274469A (ja) * | 1996-04-09 | 1997-10-21 | Toshiba Corp | 液晶表示装置 |
| CN101996606A (zh) * | 2010-11-30 | 2011-03-30 | 中国工程物理研究院流体物理研究所 | 液晶驱动电路及液晶显示装置 |
| CN103329084A (zh) * | 2010-03-17 | 2013-09-25 | 摩托罗拉解决方案公司 | 透明力传感器和制造方法 |
| CN107820582A (zh) * | 2015-04-28 | 2018-03-20 | 唯酷有限公司 | 液晶书写设备 |
| CN109901331A (zh) * | 2019-03-20 | 2019-06-18 | 深圳市恒开源电子有限公司 | 液晶手写板及液晶手写板系统 |
-
2020
- 2020-03-13 WO PCT/CN2020/079321 patent/WO2021179313A1/zh active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60188928A (ja) * | 1984-03-09 | 1985-09-26 | Toshiba Corp | 熱書き込み形液晶表示装置 |
| JPH04195624A (ja) * | 1990-11-28 | 1992-07-15 | Sharp Corp | 手書き入力表示装置 |
| JPH09274469A (ja) * | 1996-04-09 | 1997-10-21 | Toshiba Corp | 液晶表示装置 |
| CN103329084A (zh) * | 2010-03-17 | 2013-09-25 | 摩托罗拉解决方案公司 | 透明力传感器和制造方法 |
| CN101996606A (zh) * | 2010-11-30 | 2011-03-30 | 中国工程物理研究院流体物理研究所 | 液晶驱动电路及液晶显示装置 |
| CN107820582A (zh) * | 2015-04-28 | 2018-03-20 | 唯酷有限公司 | 液晶书写设备 |
| CN109901331A (zh) * | 2019-03-20 | 2019-06-18 | 深圳市恒开源电子有限公司 | 液晶手写板及液晶手写板系统 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206193731U (zh) | 一种触摸显示面板及显示装置 | |
| TWI409731B (zh) | 電子裝置 | |
| MY130221A (en) | Front light-combined transparent touch panel device | |
| US10356874B2 (en) | Backlighting dimming circuit and liquid crystal display | |
| CN111240060A (zh) | 液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 | |
| CN101174037B (zh) | 液晶面板驱动电路及液晶显示器 | |
| CN109358458B (zh) | 显示装置 | |
| US8704743B2 (en) | Power savings technique for LCD using increased frame inversion rate | |
| WO2021179313A1 (zh) | 液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 | |
| WO2020113677A1 (zh) | 显示面板驱动装置 | |
| CN211454160U (zh) | 液晶书写膜片电路结构、液晶书写膜片及其液晶书写板 | |
| WO2020103322A1 (zh) | 一种保护信号产生电路和保护装置 | |
| WO2020124668A1 (zh) | 电压调整电路及电压调整方法 | |
| CN107799072B (zh) | 电子纸显示器装置 | |
| CN208999704U (zh) | 一种显示装置 | |
| CN210271741U (zh) | 终端设备 | |
| CN113539204A (zh) | 公共电压输出电路、印制电路板和显示装置 | |
| TWI322900B (en) | Impulse backlight system and a flat display using the same | |
| US20080001905A1 (en) | Discharge circuit and liquid crystal display using the same | |
| JPH04192015A (ja) | パーソナルコンピュータ | |
| TW201303821A (zh) | 分段顯示裝置 | |
| CN110534066A (zh) | Lcd驱动芯片的电源控制方法 | |
| CN216353163U (zh) | 贴附式液晶手写膜以及可手写的显示设备 | |
| US20180164497A1 (en) | Backlight source, backlight module and display device | |
| WO2020133584A1 (zh) | 驱动控制模组及显示装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20924582 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 20924582 Country of ref document: EP Kind code of ref document: A1 |