技术领域technical field
本实用新型涉及显示技术领域，特别是涉及一种显示装置及其压力感应触摸屏。The utility model relates to the field of display technology, in particular to a display device and a pressure-sensitive touch screen thereof.
背景技术Background technique
触摸屏是一种输入设备，具有坚固耐用、反应速度快、节省空间、易于交流等许多优点，越来越多地用在手机、平板电脑、电视机等具有触控功能的智能终端上。A touch screen is an input device with many advantages such as durability, fast response, space saving, and easy communication. It is increasingly used in smart terminals with touch functions such as mobile phones, tablet computers, and televisions.
大多数现有的电容触摸屏仅感知触摸屏屏体所在平面的触摸位置，难以感知垂直施加于触摸屏屏体表面的压力。而有部分触摸屏通过额外增加压力传感器的方式，虽然能够实现压力感应功能，但是需要增加额外的传感器、独立的压力传感器芯片以及配套的处理电路，该方式成本较高。Most existing capacitive touch screens only sense the touch position on the plane where the touch screen body is located, and it is difficult to sense the pressure applied vertically to the surface of the touch screen body. However, some touch screens can realize the pressure sensing function by adding additional pressure sensors, but need to add additional sensors, independent pressure sensor chips and supporting processing circuits, and the cost of this method is relatively high.
实用新型内容Utility model content
基于此，有必要提供一种结构简单的压力感应触摸屏。Based on this, it is necessary to provide a pressure-sensitive touch screen with a simple structure.
一种压力感应触摸屏，包括保护盖板和电容传感器层，所述电容传感器层位于保护盖板一侧，还包括压力感应导电层，所述压力感应导电层为整面导电层或为具有镂空图案的导电层，所述电容传感器层位于所述保护盖板和压力感应导电层之间，所述压力感应导电层与电容传感器层之间形成压力感应电容，且根据所述压力感应电容的变动获得触摸点的压力信息。A pressure-sensitive touch screen, comprising a protective cover and a capacitive sensor layer, the capacitive sensor layer is located on one side of the protective cover, and also includes a pressure-sensitive conductive layer, the pressure-sensitive conductive layer is a full-surface conductive layer or has a hollow pattern conductive layer, the capacitance sensor layer is located between the protective cover and the pressure-sensing conductive layer, a pressure-sensing capacitance is formed between the pressure-sensing conductive layer and the capacitance sensor layer, and the pressure-sensing capacitance is obtained according to the change of the pressure-sensing capacitance The pressure information of the touch point.
在其中一个实施例中，还包括控制单元，所述控制单元包括辅助电容、辅助电阻、电容频率转换器和处理器，所述电容传感器层、压力感应导电层和辅助电容的一端共同连接于所述电容频率转换器的输入端，所述辅助电容的另一端接地，所述辅助电阻连接所述电容频率转换器的输入端和输出端，所述电容频率转换器的输出端连接所述处理器的输入端。In one of the embodiments, a control unit is also included, and the control unit includes an auxiliary capacitor, an auxiliary resistor, a capacitor-frequency converter, and a processor, and one end of the capacitive sensor layer, the pressure-sensing conductive layer, and the auxiliary capacitor is commonly connected to the The input end of the capacitance-frequency converter, the other end of the auxiliary capacitor is grounded, the auxiliary resistor is connected to the input end and the output end of the capacitance-frequency converter, and the output end of the capacitance-frequency converter is connected to the processor input terminal.
在其中一个实施例中，所述电容传感器层包括第一透明电极层和第二透明电极层，所述第一透明电极层位于所述保护盖板和第二透明电极层之间。In one embodiment, the capacitive sensor layer includes a first transparent electrode layer and a second transparent electrode layer, and the first transparent electrode layer is located between the protective cover plate and the second transparent electrode layer.
在其中一个实施例中，所述第一透明电极层和第二透明电极层形成电容，所述第二透明电极层和压力感应导电层形成电容。In one embodiment, the first transparent electrode layer and the second transparent electrode layer form a capacitor, and the second transparent electrode layer and the pressure-sensitive conductive layer form a capacitor.
在其中一个实施例中，所述保护盖板为玻璃盖板、塑料盖板、聚甲基丙烯酸甲酯盖板或蓝宝石盖板中的一种。In one embodiment, the protective cover is one of a glass cover, a plastic cover, a polymethyl methacrylate cover or a sapphire cover.
一种显示装置，包括上述的压力感应触摸屏，还包括显示模块，所述显示模块位于所述电容传感器层和压力感应导电层之间。A display device includes the above-mentioned pressure-sensitive touch screen, and further includes a display module, and the display module is located between the capacitive sensor layer and the pressure-sensitive conductive layer.
一种显示装置，包括上述的压力感应触摸屏，还包括显示模块，所述电容传感器层和压力感应导电层位于所述保护盖板和所述显示模块之间，所述电容传感器层位于保护盖板和压力感应导电层之间。A display device, comprising the above-mentioned pressure-sensitive touch screen, and further comprising a display module, the capacitive sensor layer and the pressure-sensitive conductive layer are located between the protective cover and the display module, and the capacitive sensor layer is located on the protective cover and the pressure-sensitive conductive layer.
在其中一个实施例中，所述显示模块为液晶显示模块或有机发光二极管构成的显示模块。In one embodiment, the display module is a liquid crystal display module or a display module composed of organic light emitting diodes.
上述压力感应触摸屏中，压力感应导电层与电容传感器层中的电极形成压力感应电容。当触摸屏受力时，触摸操作位置的电容传感器层中的电极与压力感应导电层之间的距离会发生微小变化，从而会产生一可变电容。该可变电容与电容传感器层产生的电容一起经过控制单元处理后转化为一相应的处理信号。所述压力感应触摸屏结构简单，在不增加额外传感器的情况下，可实现对压力的感应。In the above-mentioned pressure-sensing touch screen, the pressure-sensing conductive layer and the electrodes in the capacitive sensor layer form a pressure-sensing capacitor. When the touch screen is subjected to force, the distance between the electrodes in the capacitive sensor layer at the touch operation position and the pressure-sensitive conductive layer will change slightly, thereby generating a variable capacitance. The variable capacitance and the capacitance generated by the capacitive sensor layer are processed by the control unit and converted into a corresponding processing signal. The pressure-sensitive touch screen has a simple structure, and can realize pressure sensing without adding additional sensors.
附图说明Description of drawings
图1为本实用新型一实施例提供的压力感应触摸屏的示意图；FIG. 1 is a schematic diagram of a pressure-sensitive touch screen provided by an embodiment of the present invention;
图2为本实用新型一实施例提供的触头触控时的压力感应触摸屏的示意图；FIG. 2 is a schematic diagram of a pressure-sensitive touch screen provided by an embodiment of the present invention when the contact is touched;
图3为本实用新型一实施例提供的显示装置的示意图；3 is a schematic diagram of a display device provided by an embodiment of the present invention;
图4为本实用新型另一实施例提供的显示装置的示意图。FIG. 4 is a schematic diagram of a display device provided by another embodiment of the present invention.
具体实施方式Detailed ways
以下结合附图对本实用新型作详细描述。Below in conjunction with accompanying drawing, the utility model is described in detail.
如图1所示，本实用新型的压力感应触摸屏包括保护盖板100和电容传感器层222，所述电容传感器层222位于保护盖板100一侧，还包括压力感应导电层224，所述压力感应导电层224为整面导电层或为具有镂空图案的导电层，所述电容传感器层222位于所述保护盖板100和压力感应导电层224之间。As shown in Figure 1, the pressure-sensitive touch screen of the present invention includes a protective cover 100 and a capacitive sensor layer 222. The capacitive sensor layer 222 is located on one side of the protective cover 100, and also includes a pressure-sensitive conductive layer 224. The conductive layer 224 is a whole-surface conductive layer or a conductive layer with a hollow pattern, and the capacitive sensor layer 222 is located between the protective cover 100 and the pressure-sensing conductive layer 224 .
所述电容传感器层222可以具有单层透明电极层或双层透明电极层结构，所述电容传感器层222可以形成于与保护盖板100相贴合的绝缘基底上或者直接形成于保护盖板100表面，即电容传感器层222与保护盖板100可以形成为业界所称GF、GFF或OGS结构。电容传感器层222可以通过电容耦合的方式检测获得多个触摸操作的精确位置信息。The capacitive sensor layer 222 may have a single-layer transparent electrode layer or double-layer transparent electrode layer structure, and the capacitive sensor layer 222 may be formed on an insulating substrate attached to the protective cover 100 or directly formed on the protective cover 100 The surface, that is, the capacitive sensor layer 222 and the protective cover 100 can be formed into a structure called GF, GFF or OGS in the industry. The capacitive sensor layer 222 can detect and obtain precise position information of multiple touch operations through capacitive coupling.
上述压力感应触摸屏中，压力感应导电层224与电容传感器层222中的电极层之间形成压力感应电容。当压力感应触摸屏受力时，触摸操作位置处的电容传感器层222中的电极层与压力感应导电层224之间的距离会发生微小的变化，压力感应导电层224与电容传感器层222之间的压力感应电容产生变动，通过检测该压力感应电容的变动值，可以获得触摸点的压力信息。此外，由于触摸操作时触摸压力的不同，触头500与压力感应触摸屏接触的面积也不同，因此电容传感器层222的电容也会发生不同的数值变化。即压力感应导电层224产生的可变电容与电容传感器层222产生的可变电容一起经过控制单元240处理后转化为一相应的处理信号。所述压力感应触摸屏结构简单，在不增加额外传感器的情况下，实现对压力的感应。In the above-mentioned pressure-sensing touch screen, a pressure-sensing capacitor is formed between the pressure-sensing conductive layer 224 and the electrode layers in the capacitive sensor layer 222 . When the pressure-sensitive touch screen is under force, the distance between the electrode layer in the capacitive sensor layer 222 at the touch operation position and the pressure-sensitive conductive layer 224 will change slightly, and the distance between the pressure-sensitive conductive layer 224 and the capacitive sensor layer 222 will be slightly changed. The pressure-sensing capacitance changes, and the pressure information of the touch point can be obtained by detecting the change value of the pressure-sensing capacitance. In addition, due to the difference in touch pressure during the touch operation, the contact area of the contact 500 with the pressure-sensitive touch screen is also different, so the capacitance of the capacitive sensor layer 222 also changes in different values. That is, the variable capacitance generated by the pressure-sensing conductive layer 224 and the variable capacitance generated by the capacitive sensor layer 222 are processed by the control unit 240 and converted into a corresponding processing signal. The pressure-sensitive touch screen has a simple structure, and realizes pressure sensing without adding additional sensors.
在一实施例中，所述触摸屏还包括控制单元240，所述控制单元240包括辅助电容242、辅助电阻244、电容频率转换器226和处理器228，所述电容传感器层222、压力感应导电层224与所述辅助电容242的一端共同连接于所述电容频率转换器226的输入端，所述辅助电容242的另一端接地，所述辅助电阻244连接所述电容频率转换器226的输入端和输出端，所述电容频率转换器226的输出端连接所述处理器228的输入端。In one embodiment, the touch screen further includes a control unit 240, the control unit 240 includes an auxiliary capacitor 242, an auxiliary resistor 244, a capacitive frequency converter 226 and a processor 228, the capacitive sensor layer 222, the pressure-sensitive conductive layer 224 and one end of the auxiliary capacitor 242 are commonly connected to the input end of the capacitance frequency converter 226, the other end of the auxiliary capacitor 242 is grounded, and the auxiliary resistor 244 is connected to the input end of the capacitance frequency converter 226 and The output terminal, the output terminal of the capacitor frequency converter 226 is connected to the input terminal of the processor 228 .
控制单元240中的电容频率转换器226根据所输入电容的值输出一相应的频率值，然后处理器228根据电容频率转换器226输出的频率值产生一相应的处理信号。由于不同的触摸操作产生不同的触摸压力，而电容传感器层222和压力感应导电层224之间的电容根据触摸压力的变化而改变，电容频率转换器226根据不同的电容输入会输出不同的频率值，然后处理器228根据电容频率转换器226输出的频率值产生一相应的处理信号，最终压力感应触摸屏对应不同的触摸压力产生相应的处理信号。The capacitor-to-frequency converter 226 in the control unit 240 outputs a corresponding frequency value according to the input capacitor value, and then the processor 228 generates a corresponding processing signal according to the frequency value output by the capacitor-to-frequency converter 226 . Since different touch operations generate different touch pressures, and the capacitance between the capacitive sensor layer 222 and the pressure-sensitive conductive layer 224 changes according to changes in the touch pressure, the capacitance-to-frequency converter 226 will output different frequency values according to different capacitance inputs , and then the processor 228 generates a corresponding processing signal according to the frequency value output by the capacitive frequency converter 226, and finally the pressure-sensitive touch screen generates a corresponding processing signal corresponding to different touch pressures.
在一实施例中，所述电容传感器层222包括第一透明电极层223和第二透明电极层225，所述第一透明电极层223位于所述保护盖板100和第二透明电极层225之间。In one embodiment, the capacitive sensor layer 222 includes a first transparent electrode layer 223 and a second transparent electrode layer 225, the first transparent electrode layer 223 is located between the protective cover 100 and the second transparent electrode layer 225 between.
当压力感应触摸屏处于未触摸状态时，所述第一透明电极层223和第二透明电极层225形成电容Cp0，所述第二透明电极层225和压力感应导电层224形成电容Cg0，此时输入电容频率转换器226的总电容值C0为第一透明电极层223和第二透明电极层225形成的电容Cp0，以及第二透明电极层225和压力感应导电层224形成的电容Cg0之和，即C0＝Cg0+Cp0。When the pressure-sensitive touch screen is in the untouched state, the first transparent electrode layer 223 and the second transparent electrode layer 225 form a capacitance Cp0 , and the second transparent electrode layer 225 and the pressure-sensitive conductive layer 224 form a capacitance Cg0 , here The total capacitance C0 of the input capacitance frequency converter 226 is the capacitance Cp0 formed by the first transparent electrode layer 223 and the second transparent electrode layer 225, and the capacitance C formed by the second transparent electrode layer 225 and the pressure-sensitive conductive layer 224 The sum ofg0 , that is, C0 =Cg0 +Cp0 .
如图2所示，当压力感应触摸屏受力时，触头500和电容传感器层222之间会产生一个电容Cf。触摸压力越大，电容传感器层222中参与耦合的电极越多，产生的Cf也会随着不同。同时，由于触摸压力的存在，所述第二透明电极层225和压力感应导电层224之间的距离也会发生微小改变，所以第二透明电极层225和压力感应导电层224之间的电容根据触摸压力的大小变为Cg。而所述第一透明电极层223和第二透明电极层225之间的电容变为Cp。此时压力感应触摸屏总的电容值为C，而C＝Cg+Cp+Cf。随着触摸压力的变化，压力感应触摸屏产生的总电容C值会发生改变。所述电容C输入电容频率转换器226的输入端，电容频率转换器226输出对应于该电容值C的频率值。然后通过处理器228将获取的频率值与已存储的频率值相应信号列表中的频率值进行对比，获得并输出一处理信号。As shown in FIG. 2 , when a force is applied to the pressure-sensitive touch screen, a capacitance Cf is generated between the contact 500 and the capacitive sensor layer 222 . The greater the touch pressure, the more electrodes involved in the coupling in the capacitive sensor layer 222 , and the resulting Cf will be different accordingly. At the same time, due to the presence of touch pressure, the distance between the second transparent electrode layer 225 and the pressure-sensitive conductive layer 224 will also change slightly, so the capacitance between the second transparent electrode layer 225 and the pressure-sensitive conductive layer 224 is based on The magnitude of the touch pressure becomes Cg . And the capacitance between the first transparent electrode layer 223 and the second transparent electrode layer 225 becomes Cp . At this time, the total capacitance value of the pressure-sensitive touch screen is C, and C=Cg +Cp +Cf . As the touch pressure changes, the total capacitance C value generated by the pressure-sensitive touch screen will change. The capacitance C is input to the input terminal of the capacitance-to-frequency converter 226 , and the capacitance-to-frequency converter 226 outputs a frequency value corresponding to the capacitance value C. Then, the processor 228 compares the obtained frequency value with the frequency value in the stored frequency value corresponding signal list to obtain and output a processed signal.
在一实施例中，所述保护盖板100为玻璃盖板、塑料盖板、聚甲基丙烯酸甲酯盖板或蓝宝石盖板中的一种。In an embodiment, the protective cover 100 is one of a glass cover, a plastic cover, a polymethyl methacrylate cover or a sapphire cover.
本实用新型还对应提供一种显示装置，如图3所示，包括上述实施例的压力感应触摸屏，还包括显示模块300，所述显示模块300位于所述电容传感器层222和压力感应导电层224之间。电容传感器层222与显示模组300之间可以通过框贴的方式粘接以提高灵敏度。The utility model also provides a corresponding display device, as shown in FIG. 3 , which includes the pressure-sensitive touch screen of the above-mentioned embodiment, and also includes a display module 300, and the display module 300 is located on the capacitive sensor layer 222 and the pressure-sensitive conductive layer 224. between. The capacitive sensor layer 222 and the display module 300 can be bonded by a frame to improve sensitivity.
在显示装置的另一实施例中，如图4所示，包括上述的压力感应触摸屏，还包括显示模块300，所述电容传感器层222和压力感应导电层224位于所述保护盖板100和所述显示模块300之间，所述电容传感器层222位于保护盖板100和压力感应导电层224之间。压力感应导电层224和电容传感器层222之间通过泡棉胶400粘接。In another embodiment of the display device, as shown in FIG. 4 , it includes the above-mentioned pressure-sensing touch screen, and further includes a display module 300, the capacitive sensor layer 222 and the pressure-sensing conductive layer 224 are located on the protective cover 100 and the Between the display module 300 , the capacitive sensor layer 222 is located between the protective cover 100 and the pressure-sensing conductive layer 224 . The pressure-sensing conductive layer 224 and the capacitive sensor layer 222 are bonded by foam glue 400 .
在其中一个实施例中，所述显示模块300为液晶显示模块或有机发光二极管构成的显示模块。In one of the embodiments, the display module 300 is a liquid crystal display module or a display module composed of organic light emitting diodes.
本实用新型的显示装置可用于手机、平板电脑、电视机等产品。The display device of the utility model can be used in products such as mobile phones, tablet computers, and televisions.
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.
以上所述实施例仅表达了本实用新型的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进，这些都属于本实用新型的保护范围。因此，本实用新型专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.
| Application Number | Priority Date | Filing Date | Title |
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| CN201520384009.7UCN204808288U (en) | 2015-06-05 | 2015-06-05 | Forced induction touch -sensitive screen and display device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520384009.7UCN204808288U (en) | 2015-06-05 | 2015-06-05 | Forced induction touch -sensitive screen and display device |
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|---|---|
| CN204808288Utrue CN204808288U (en) | 2015-11-25 |
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| CN201520384009.7UExpired - LifetimeCN204808288U (en) | 2015-06-05 | 2015-06-05 | Forced induction touch -sensitive screen and display device |
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| CN (1) | CN204808288U (en) |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder | Address after:330000 Jiangxi city of Nanchang province Huangjiahu road Nanchang economic and Technological Development Zone Patentee after:Nanchang OFilm Tech. Co.,Ltd. Patentee after:Ophiguang Group Co.,Ltd. Patentee after:SUZHOU OFILM TECH Co.,Ltd. Address before:330000 Jiangxi city of Nanchang province Huangjiahu road Nanchang economic and Technological Development Zone Patentee before:Nanchang OFilm Tech. Co.,Ltd. Patentee before:OFilm Tech Co.,Ltd. Patentee before:SUZHOU OFILM TECH Co.,Ltd. Address after:330000 Jiangxi city of Nanchang province Huangjiahu road Nanchang economic and Technological Development Zone Patentee after:Nanchang OFilm Tech. Co.,Ltd. Patentee after:OFilm Tech Co.,Ltd. Patentee after:SUZHOU OFILM TECH Co.,Ltd. Address before:330000 Jiangxi city of Nanchang province Huangjiahu road Nanchang economic and Technological Development Zone Patentee before:Nanchang OFilm Tech. Co.,Ltd. Patentee before:Shenzhen OFilm Tech Co.,Ltd. Patentee before:SUZHOU OFILM TECH Co.,Ltd. | |
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | Effective date of registration:20210425 Address after:231323 Building 1, precision electronics industrial park, Hangbu Town, Shucheng County, Lu'an City, Anhui Province Patentee after:Anhui jingzhuo optical display technology Co.,Ltd. Address before:330000 Jiangxi city of Nanchang province Huangjiahu road Nanchang economic and Technological Development Zone Patentee before:Nanchang OFilm Tech. Co.,Ltd. Patentee before:Ophiguang Group Co.,Ltd. Patentee before:SUZHOU OFILM TECH Co.,Ltd. | |
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term | Granted publication date:20151125 |