CN205451020U - Graphite alkene capacitive touch screen with forced induction - Google Patents

Graphite alkene capacitive touch screen with forced induction Download PDF

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CN205451020U
CN205451020U CN201521105015.0U CN201521105015U CN205451020U CN 205451020 U CN205451020 U CN 205451020U CN 201521105015 U CN201521105015 U CN 201521105015U CN 205451020 U CN205451020 U CN 205451020U
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graphene
pressure
conductive film
transparent conductive
touch screen
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杨俊�
罗伟
魏大鹏
魏兴战
史浩飞
杜春雷
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Chongqing Institute of Green and Intelligent Technology of CAS
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Abstract

一种具有压力感应的石墨烯电容式触摸屏,其结构包括盖板层、OCA光学胶层a、上层石墨烯透明导电薄膜层、下层石墨烯透明导电薄膜层、压力敏感性聚合物弹性体、OCA光学胶层b、显示模组、外围电路、接口芯片a、外围电路、接口芯片b及主控芯片。两层石墨烯透明导电薄膜层中间设有一层透明绝缘的聚合物弹性体以适应外部触控压力的变化。工作时,触控压力引起聚合物弹性体的局部形变,导致局部电容的变化,而推算出触控压力的大小。并且通过对聚合物弹性体的微纳结构化设计可提高压力感知的灵敏度。本实用新型所述石墨烯触摸屏实现了压力感应,具有可折叠、高灵敏度、轻薄、高透光率、高电导率、低成本、绿色环保的优点,为新型触控设备奠定基础。

A graphene capacitive touch screen with pressure sensitivity, its structure includes a cover layer, an OCA optical adhesive layer a, an upper graphene transparent conductive film layer, a lower graphene transparent conductive film layer, a pressure-sensitive polymer elastomer, OCA Optical adhesive layer b, display module, peripheral circuit, interface chip a, peripheral circuit, interface chip b and main control chip. There is a layer of transparent insulating polymer elastomer between the two graphene transparent conductive film layers to adapt to changes in external touch pressure. During operation, the touch pressure causes local deformation of the polymer elastomer, resulting in a change in local capacitance, and the magnitude of the touch pressure is deduced. And the sensitivity of pressure perception can be improved through the micro-nano structured design of the polymer elastomer. The graphene touch screen of the utility model realizes pressure sensing, has the advantages of being foldable, high sensitivity, light and thin, high light transmittance, high electrical conductivity, low cost, and environmental protection, and lays the foundation for a new touch device.

Description

一种具有压力感应的石墨烯电容式触摸屏A graphene capacitive touch screen with pressure sensitivity

技术领域 technical field

本实用新型属于电子信息技术触摸屏领域,特别涉及一种具有压力感应的石墨烯电容式触摸屏。 The utility model belongs to the field of electronic information technology touch screens, in particular to a graphene capacitive touch screen with pressure induction.

背景技术 Background technique

触摸屏又称为“触控屏”、“触控面板”,因具有易操作性、直观性和灵活性等优点,已成为个人移动通信设备和综合信息终端如智能手机、平板电脑、智能手机、超级笔记本电脑、可穿戴式设备以及机器设备的操作界面等主要人机交互手段。触摸屏根据不同的工作原理可分为电容触摸屏、电阻触摸屏、红外触摸屏和表面声波触摸屏等四种主要类型。其中电容触摸屏具有多点触控、反应时间快、使用寿命长、透光率高以及用户使用体验优越等一系列优势。同时随着工艺的逐步成熟,良品率得到显著提高,价格日益降低,电容触摸屏目前已成为中小尺寸信息终端触控交互的主要方式。 Touch screen, also known as "touch screen" and "touch panel", has become a personal mobile communication device and comprehensive information terminal such as smart phone, tablet computer, smart phone, The main means of human-computer interaction such as ultra-notebook computers, wearable devices, and operation interfaces of machine equipment. According to different working principles, touch screens can be divided into four main types: capacitive touch screens, resistive touch screens, infrared touch screens and surface acoustic wave touch screens. Among them, the capacitive touch screen has a series of advantages such as multi-touch, fast response time, long service life, high light transmittance and superior user experience. At the same time, with the gradual maturity of the technology, the yield rate has been significantly improved, and the price has been reduced day by day. Capacitive touch screens have now become the main way of touch interaction for small and medium-sized information terminals.

近年来,石墨烯触摸屏的应用受到了极大关注,尤其在未来的柔性显示、可穿戴式设备等领域拥有广泛的市场前景。但是,现阶段的电容式触摸屏包括石墨烯触摸屏,仅感知屏体所在平面(X,Y轴二维空间)的触摸位置,难以支持垂直于屏体平面(Z轴)的触摸参数感知,即压力的感应。 In recent years, the application of graphene touch screen has received great attention, especially in the future flexible display, wearable devices and other fields have broad market prospects. However, capacitive touch screens at this stage include graphene touch screens, which only sense the touch position on the plane (X, Y axis two-dimensional space) where the screen body is located, and it is difficult to support the perception of touch parameters perpendicular to the screen body plane (Z axis), that is, pressure induction.

实用新型内容 Utility model content

本实用新型的目的在于提供一种具有压力感应的石墨烯电容式触摸屏,实现平面位置信息和Z轴压力的感应。 The purpose of the utility model is to provide a graphene capacitive touch screen with pressure sensitivity, which can realize the induction of plane position information and Z-axis pressure.

本实用新型所涉及的一种具有压力感应的石墨烯电容式触摸屏,包括盖板层、OCA光学胶层a、上层石墨烯透明导电薄膜层、下层石墨烯透明导电薄膜层、压力敏感性聚合物弹性体、OCA光学胶层b、显示模组、纵向传导区域的外围电路、接口芯片a、横向传导区域的外围电路、接口芯片b及主控芯片;在上层石墨烯透明导电薄膜层和下层石墨烯透明导电薄膜层的中间设置一层透明绝缘的聚合物弹性体,在压力作用下聚合物弹性体能够产生明显的形变,聚合物弹性体为PDMS(聚二甲基硅氧烷)、TPU(聚氨酯弹性体)、硅橡胶或聚氨酯橡胶等材料中的一种,厚度为0.1~500um;石墨烯透明导电薄膜层采用规模化的CVD方法制备,并大面积转移至透明柔性基底上,其层数为1~10层,其方阻为10~1000Ω/□,其透光率为80~97%;上层石墨烯和下层石墨烯通过外围电路及接口芯片将触摸位置信息及压力信息传输至主控芯片,主控芯片根据接口芯片a和接口芯片b的输入信息,得到对石墨烯电容式触摸屏操作的触摸位置及对应的触摸压力。 The utility model relates to a graphene capacitive touch screen with pressure sensitivity, comprising a cover layer, an OCA optical adhesive layer a, an upper graphene transparent conductive film layer, a lower graphene transparent conductive film layer, and a pressure-sensitive polymer Elastomer, OCA optical adhesive layer b, display module, peripheral circuit in the vertical conduction area, interface chip a, peripheral circuit in the lateral conduction area, interface chip b and the main control chip; in the upper layer of graphene transparent conductive film layer and the lower layer of graphite A layer of transparent insulating polymer elastomer is arranged in the middle of the vinyl transparent conductive film layer. The polymer elastomer can produce obvious deformation under pressure. The polymer elastomer is PDMS (polydimethylsiloxane), TPU ( Polyurethane elastomer), silicone rubber or polyurethane rubber and other materials, with a thickness of 0.1-500um; the graphene transparent conductive film layer is prepared by a large-scale CVD method, and transferred to a transparent flexible substrate in a large area. It is 1-10 layers, its square resistance is 10-1000Ω/□, and its light transmittance is 80-97%. The upper layer graphene and the lower layer graphene transmit the touch position information and pressure information to the main control through peripheral circuits and interface chips. chip, the main control chip obtains the touch position and the corresponding touch pressure for the operation of the graphene capacitive touch screen according to the input information of the interface chip a and the interface chip b.

所述的上层石墨烯透明导电薄膜层中的石墨烯被分割为多条相互等间距且平行的纵向传导区域,下层石墨烯层透明导电薄膜层中的石墨烯被分割为多条相互等间距且平等的横向传导区域。 The graphene in the upper graphene transparent conductive film layer is divided into a plurality of mutually equidistant and parallel longitudinal conduction regions, and the graphene in the lower graphene layer transparent conductive film layer is divided into a plurality of mutually equidistant and parallel Equal lateral conduction area.

所述的压力敏感性聚合物弹性体,可以为光滑的弹性体薄膜,或者可以进一步在弹性体薄膜表面设置微纳米结构,以增强弹性体在相同压力作用下的弹性形变能力,从而提高压力传感的灵敏度,表面微纳结构包括金字塔、圆柱、矩形柱子、正六边形柱子、圆锥等,其特征尺寸为100nm~100um,高度为100nm~100um。 The pressure-sensitive polymer elastomer can be a smooth elastomer film, or micro-nano structures can be further arranged on the surface of the elastomer film to enhance the elastic deformation ability of the elastomer under the same pressure, thereby improving the pressure transmission. Sensitivity, surface micro-nano structures include pyramids, cylinders, rectangular pillars, regular hexagonal pillars, cones, etc., with a characteristic size of 100nm to 100um and a height of 100nm to 100um.

所述的接口芯片包括纵向电路的接口芯片a和横向电路的接口芯片b,其中上层石墨烯的纵向传导区域通过纵向传导区域的外围电路与纵向电路接口芯片a相连,下层石墨烯的横向传导区域通过横向传导区域的外围电路与横向电路接口芯片b相连。 Described interface chip comprises the interface chip a of vertical circuit and the interface chip b of horizontal circuit, wherein the vertical conduction area of upper layer graphene is connected with vertical circuit interface chip a through the peripheral circuit of vertical conduction area, the transverse conduction area of lower graphene The peripheral circuit through the lateral conduction area is connected with the lateral circuit interface chip b.

所述的接口芯片a采集并处理纵向Y方向位置信息,接口芯片b采集并处理纵向X方向位置信息,并将(X,Y)信息输入到主控芯片得到触控的具体位置信息。 The interface chip a collects and processes the longitudinal position information in the Y direction, and the interface chip b collects and processes the longitudinal position information in the X direction, and inputs (X, Y) information to the main control chip to obtain the specific position information of the touch.

所述的主控芯片将触摸位置(X,Y)处的上下两层石墨烯所构成电容的变化进行采集,并处理为压力值。 The main control chip collects the change of capacitance formed by the upper and lower layers of graphene at the touch position (X, Y), and processes it as a pressure value.

本实用新型所涉及的石墨烯电容式触摸屏具有压力感应能力,压力感应范围为0.1Pa~100kPa,其应用包括触摸屏手机、触摸屏电脑、可穿戴式设备的触摸屏显示等。 The graphene capacitive touch screen involved in the utility model has pressure sensing ability, and the pressure sensing range is 0.1Pa~100kPa, and its application includes touch screen mobile phone, touch screen computer, touch screen display of wearable devices, etc.

附图说明 Description of drawings

图1为实施例一所述的具有压力感应的石墨烯电容式触摸屏的器件结构截面图,其中101为盖板层,102为OCA光学胶层a,103为上层石墨烯透明导电薄膜层,104为压力敏感性聚合物弹性体,105为下层石墨烯透明导电薄膜层,106为OCA光学胶层b,107为显示模组; Fig. 1 is the device structure sectional view of the graphene capacitive touch screen with pressure sensitivity described in embodiment one, wherein 101 is a cover plate layer, 102 is an OCA optical glue layer a, 103 is an upper graphene transparent conductive film layer, 104 It is a pressure-sensitive polymer elastomer, 105 is a lower graphene transparent conductive film layer, 106 is an OCA optical adhesive layer b, and 107 is a display module;

图2为触摸屏的石墨烯电路图,其中201为上层石墨烯的纵向传导区域,202为下层石墨烯的横向传导区域,203为纵向传导区域的外围电路,204为纵向电路的接口芯片a,205为横向传导区域的外围电路,206为横向电路的接口芯片b,207为主控芯片; Fig. 2 is the graphene circuit diagram of touch screen, wherein 201 is the longitudinal conduction region of upper graphene, 202 is the transverse conduction region of lower graphene, 203 is the peripheral circuit of longitudinal conduction region, 204 is the interface chip a of vertical circuit, 205 is The peripheral circuit of the lateral conduction area, 206 is the interface chip b of the lateral circuit, and 207 is the main control chip;

图3为实施例二所述的具有压力感应的石墨烯电容式触摸屏的器件结构截面图,其中301为盖板层,302为OCA光学胶层a,303为上层石墨烯透明导电薄膜层,304为压力敏感性聚合物弹性体,305为下层石墨烯透明导电薄膜层,306为OCA光学胶层b,307为显示模组。 Fig. 3 is the device structure sectional view of the graphene capacitive touch screen with pressure sensitivity described in embodiment two, wherein 301 is a cover plate layer, 302 is an OCA optical adhesive layer a, 303 is an upper graphene transparent conductive film layer, 304 It is a pressure-sensitive polymer elastomer, 305 is the lower graphene transparent conductive film layer, 306 is the OCA optical adhesive layer b, and 307 is the display module.

具体实施方式 detailed description

下面结合附图和实施例对本实用新型进一步说明。 Below in conjunction with accompanying drawing and embodiment the utility model is further described.

实施例一 Embodiment one

本实施例的压力感应的石墨烯电容式触摸屏的器件结构如图1所示,上层石墨烯透明导电薄膜层103和下层石墨烯透明导电薄膜层104均采用CVD生长石墨烯制成,并通过大面积转移方法转移至柔性PET基底上,所述石墨烯的层数为1层,方阻为200Ω/sq,透光率范围为91%。 The device structure of the pressure-sensitive graphene capacitive touch screen of the present embodiment is as shown in Figure 1, and the upper graphene transparent conductive film layer 103 and the lower graphene transparent conductive film layer 104 all adopt CVD growth graphene to make, and through large The area transfer method is transferred to the flexible PET substrate. The number of layers of the graphene is 1 layer, the square resistance is 200Ω/sq, and the light transmittance range is 91%.

本实施例中,石墨烯透明导电薄膜的图形化通过光刻、刻蚀的方法实现。 In this embodiment, the patterning of the graphene transparent conductive film is realized by photolithography and etching.

本实施例中,所述石墨烯电容触摸屏还包括压力敏感性聚合物弹性体104,所述上层石墨烯透明导电薄膜层103和下层石墨烯透明导电薄膜层105分别位于压力敏感性聚合物弹性体104的上下表面。 In this embodiment, the graphene capacitive touch screen also includes a pressure-sensitive polymer elastomer 104, and the upper graphene transparent conductive film layer 103 and the lower graphene transparent conductive film layer 105 are respectively positioned on the pressure-sensitive polymer elastomer. 104 upper and lower surfaces.

本实施例中,所述压力敏感性聚合物弹性体104采用PDMS材料,厚度为50um,表面进行微纳结构化处理。 In this embodiment, the pressure-sensitive polymer elastomer 104 is made of PDMS material with a thickness of 50 um, and the surface is treated with micro-nano structure.

本实施例中,所述微纳结构为金字塔形,特征尺寸为5um,高度为5um。 In this embodiment, the micro-nano structure is pyramid-shaped, with a characteristic size of 5 um and a height of 5 um.

本实施例中,上层石墨烯透明导电薄膜层103通过激光刻蚀的方法被分割为多条相互等间距且平行的纵向传导区域201,下层石墨烯透明导电薄膜层105通过激光刻蚀的方法被分割为多条相互等间距且平行的纵向传导区域202。 In this embodiment, the upper layer of graphene transparent conductive film layer 103 is divided into a plurality of mutually equidistant and parallel longitudinal conductive regions 201 by laser etching, and the lower layer of graphene transparent conductive film layer 105 is divided by laser etching. It is divided into a plurality of longitudinal conduction regions 202 that are equally spaced and parallel to each other.

本实施例中,纵向传导区域201通过纵向传导区域的外围电路203与纵向电路接口芯片204相连,下层石墨烯的横向传导区域202通过横向传导区域的外围电路205与横向电路的接口芯片206相连。 In this embodiment, the vertical conduction region 201 is connected to the vertical circuit interface chip 204 through the peripheral circuit 203 of the vertical conduction region, and the lateral conduction region 202 of the lower graphene is connected to the interface chip 206 of the lateral circuit through the peripheral circuit 205 of the lateral conduction region.

本实施例中,接口芯片204与接口芯片206连接至主控芯片,用以采集并处理触摸屏的位置信息和压力信息。 In this embodiment, the interface chip 204 and the interface chip 206 are connected to the main control chip to collect and process the position information and pressure information of the touch screen.

本实施例中,所述电容触摸屏还包括盖板层101、显示模组107和OCA光学胶层a102和OCA光学胶层b106,所述盖板层101通过OCA光学胶层a102与上层石墨烯透明导电薄膜层103粘接在一起,所述显示模组107通过OCA光学胶层b106与下层石墨烯透明导电薄膜层105粘接在一起。 In this embodiment, the capacitive touch screen further includes a cover layer 101, a display module 107, an OCA optical adhesive layer a102 and an OCA optical adhesive layer b106, and the cover layer 101 is transparent to the upper graphene through the OCA optical adhesive layer a102. The conductive film layers 103 are bonded together, and the display module 107 is bonded together with the lower graphene transparent conductive film layer 105 through the OCA optical adhesive layer b106.

本实施例中,所述盖板层101采用透明玻璃材料制成。 In this embodiment, the cover layer 101 is made of transparent glass material.

实施例二 Embodiment two

本实施例的压力感应的石墨烯电容式触摸屏的器件结构如图3所示,所述上层石墨烯透明导电薄膜层303和下层石墨烯透明导电薄膜层304均采用CVD生长石墨烯制成,并通过大面积转移方法转移至柔性PI基底上,所述石墨烯的层数为3层,方阻为100Ω/sq,透光率范围为85%。 The device structure of the pressure-sensitive graphene capacitive touch screen of the present embodiment is as shown in Figure 3, and the upper graphene transparent conductive film layer 303 and the lower graphene transparent conductive film layer 304 are all made of CVD grown graphene, and Transferred to a flexible PI substrate by a large-area transfer method, the number of layers of the graphene is 3 layers, the square resistance is 100Ω/sq, and the light transmittance range is 85%.

本实施例中,所述石墨烯电容触摸屏还包括压力敏感性聚合物弹性体304,所述上层石墨烯透明导电薄膜层303和下层石墨烯透明导电薄膜层305分别位于压力敏感性聚合物弹性体304的上下表面。 In this embodiment, the graphene capacitive touch screen also includes a pressure-sensitive polymer elastomer 304, and the upper graphene transparent conductive film layer 303 and the lower graphene transparent conductive film layer 305 are located on the pressure-sensitive polymer elastomer respectively. 304 upper and lower surfaces.

本实施例中,所述压力敏感性聚合物弹性体304采用TPU材料,厚度为200um,表面不进行微纳结构化处理。 In this embodiment, the pressure-sensitive polymer elastomer 304 is made of TPU material with a thickness of 200 um, and the surface is not treated with micro-nano structure.

本实施例中,上层石墨烯透明导电薄膜层303通过激光刻蚀的方法被分割为多条相互等间距且平行的纵向传导区域201,下层石墨烯透明导电薄膜层305通过激光刻蚀的方法被分割为多条相互等间距且平行的纵向传导区域202。 In this embodiment, the upper layer of graphene transparent conductive film layer 303 is divided into a plurality of mutually equidistant and parallel longitudinal conductive regions 201 by laser etching, and the lower layer of graphene transparent conductive film layer 305 is divided by laser etching. It is divided into a plurality of longitudinal conduction regions 202 that are equally spaced and parallel to each other.

本实施例中,纵向传导区域201通过纵向传导区域的外围电路203与纵向电路接口芯片204相连,下层石墨烯的横向传导区域202通过横向传导区域的外围电路205与横向电路的接口芯片206相连。 In this embodiment, the vertical conduction region 201 is connected to the vertical circuit interface chip 204 through the peripheral circuit 203 of the vertical conduction region, and the lateral conduction region 202 of the lower graphene is connected to the interface chip 206 of the lateral circuit through the peripheral circuit 205 of the lateral conduction region.

本实施例中,接口芯片204与接口芯片206连接至主控芯片,用以采集并处理触摸屏的位置信息和压力信息。 In this embodiment, the interface chip 204 and the interface chip 206 are connected to the main control chip to collect and process the position information and pressure information of the touch screen.

本实施例中,所述电容触摸屏还包括盖板层301、显示模组307和OCA光学胶层a302和OCA光学胶层b306,所述盖板层301通过OCA光学胶层a302与上层石墨烯透明导电薄膜层303粘接在一起,所述显示模组307通过OCA光学胶层b306与下层石墨烯透明导电薄膜层305粘接在一起。 In this embodiment, the capacitive touch screen further includes a cover layer 301, a display module 307, an OCA optical adhesive layer a302 and an OCA optical adhesive layer b306, and the cover layer 301 is transparent to the upper graphene through the OCA optical adhesive layer a302. The conductive film layers 303 are bonded together, and the display module 307 is bonded together with the lower graphene transparent conductive film layer 305 through the OCA optical adhesive layer b306.

本实施例中,所述盖板层301采用聚对苯二甲酸乙二醇酯PET材料制成。 In this embodiment, the cover layer 301 is made of polyethylene terephthalate PET material.

最后说明的是,以上实施例仅用以说明本实用新型的技术方案而非限制,尽管参照较佳实施例对本实用新型进行了详细说明,本领域的普通技术人员应当理解,可以对本实用新型的技术方案进行修改或者等同替换,而不脱离本实用新型技术方案的宗旨和范围,其均应涵盖在本实用新型的权利要求范围当中。 Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (7)

1.一种具有压力感应的石墨烯电容式触摸屏,包括盖板层(101)、OCA光学胶层a(102)、上层石墨烯透明导电薄膜层(103)、下层石墨烯透明导电薄膜层(105)、压力敏感性聚合物弹性体(104)、OCA光学胶层b(106)、显示模组(107)、纵向传导区域的外围电路(203)、接口芯片a(204)、横向传导区域的外围电路(205)、接口芯片b(206)及主控芯片(207);其特征是:在上层石墨烯透明导电薄膜层(103)和下层石墨烯透明导电薄膜层(105)的中间设置一层透明绝缘的聚合物弹性体(104),在压力作用下聚合物弹性体能够产生明显的形变,聚合物弹性体为聚二甲基硅氧烷、聚氨酯弹性体、硅橡胶或聚氨酯橡胶材料中的一种,厚度为0.1~500um;上层石墨烯透明导电薄膜层和下层石墨烯透明导电薄膜层均采用CVD方法生长石墨烯制成,并大面积转移至透明柔性基底上,其层数为1~10层,其方阻为10~1000Ω/□,其透光率为80~97%;上层石墨烯和下层石墨烯通过外围电路及接口芯片将触摸位置信息及压力信息传输至主控芯片(207),主控芯片(207)根据接口芯片a(204)和接口芯片b(206)的输入信息,得到对石墨烯电容式触摸屏操作的触摸位置及对应的触摸压力。 1. a graphene capacitive touch screen with pressure sensitivity, comprising a cover plate (101), an OCA optical adhesive layer a (102), an upper graphene transparent conductive film layer (103), a lower graphene transparent conductive film layer ( 105), pressure-sensitive polymer elastomer (104), OCA optical adhesive layer b (106), display module (107), peripheral circuit in the longitudinal conduction area (203), interface chip a (204), transverse conduction area Peripheral circuit (205), interface chip b (206) and main control chip (207); It is characterized in that: set in the middle of upper graphene transparent conductive film layer (103) and lower graphene transparent conductive film layer (105) A layer of transparent insulating polymer elastomer (104), which can produce obvious deformation under pressure, and the polymer elastomer is polydimethylsiloxane, polyurethane elastomer, silicone rubber or polyurethane rubber material One of them, with a thickness of 0.1-500um; the upper graphene transparent conductive film layer and the lower graphene transparent conductive film layer are made of graphene grown by CVD method, and transferred to a transparent flexible substrate in a large area, and the number of layers is 1-10 layers, its square resistance is 10-1000Ω/□, and its light transmittance is 80-97%; the upper layer graphene and the lower layer graphene transmit the touch position information and pressure information to the main control chip through peripheral circuits and interface chips (207), the main control chip (207) obtains the touch position and the corresponding touch pressure operated on the graphene capacitive touch screen according to the input information of the interface chip a (204) and the interface chip b (206). 2.根据权利要求1所述的一种具有压力感应的石墨烯电容式触摸屏,其特征是:上层石墨烯透明导电薄膜层中的石墨烯被分割为多条相互等间距且平行的纵向传导区域(201),下层石墨烯透明导电薄膜层中的石墨烯被分割为多条相互等间距且平等的横向传导区域(202)。 2. A kind of graphene capacitive touch screen with pressure sensitivity according to claim 1, it is characterized in that: the graphene in the upper layer of graphene transparent conductive film layer is divided into a plurality of mutually equally spaced and parallel longitudinal conduction regions (201), the graphene in the lower graphene transparent conductive film layer is divided into a plurality of mutually equidistant and equal lateral conduction regions (202). 3.根据权利要求1所述的一种具有压力感应的石墨烯电容式触摸屏,其特征是:所述的压力敏感性聚合物弹性体(104),可以为光滑的弹性体薄膜,或者可以进一步在弹性体薄膜表面设置微纳米结构,以增强弹性体在相同压力作用下的弹性形变能力,从而提高压力传感的灵敏度,表面微纳结构包括金字塔、圆柱、矩形柱子、正六边形柱子、圆锥,其特征尺寸为100nm~100um,高度为100nm~100um。 3. A kind of graphene capacitive touch screen with pressure sensitivity according to claim 1, is characterized in that: described pressure-sensitive polymer elastomer (104), can be smooth elastomer film, or can further Set micro-nano structures on the surface of the elastomer film to enhance the elastic deformation ability of the elastomer under the same pressure, thereby improving the sensitivity of pressure sensing. The surface micro-nano structures include pyramids, cylinders, rectangular columns, regular hexagonal columns, and cones. , the characteristic size is 100nm-100um, and the height is 100nm-100um. 4.根据权利要求1所述的一种具有压力感应的石墨烯电容式触摸屏,其特征是:所述的接口芯片包括纵向电路的接口芯片a(204)和横向电路的接口芯片b(206),其中上层石墨烯的纵向传导区域(201)通过纵向传导区域的外围电路(203)与纵向电路接口芯片a(204)相连,下层石墨烯的横向传导区域(202)通过横向传导区域的外围电路(205)与横向电路接口芯片b(206)相连。 4. A kind of graphene capacitive touch screen with pressure sensitivity according to claim 1, is characterized in that: described interface chip comprises the interface chip a (204) of vertical circuit and the interface chip b (206) of horizontal circuit , wherein the vertical conduction region (201) of the upper graphene is connected with the vertical circuit interface chip a (204) through the peripheral circuit (203) of the vertical conduction region, and the lateral conduction region (202) of the lower graphene is passed through the peripheral circuit of the lateral conduction region (205) is connected to the lateral circuit interface chip b (206). 5.根据权利要求1所述的一种具有压力感应的石墨烯电容式触摸屏,其特征是:所述的接口芯片a(204)采集并处理纵向Y方向位置信息,接口芯片b(206)采集并处理纵向X方向位置信息,并将(X,Y)信息输入到主控芯片(207)得到触控的具体位置信息。 5. a kind of graphene capacitive touch screen with pressure induction according to claim 1 is characterized in that: described interface chip a (204) collects and processes longitudinal Y direction position information, and interface chip b (206) collects And process the position information in the longitudinal X direction, and input the (X, Y) information to the main control chip (207) to obtain the specific position information of the touch. 6.根据权利要求1所述的一种具有压力感应的石墨烯电容式触摸屏,其特征是:所述的主控芯片(207)将触摸位置处的上下两层石墨烯所构成电容的变化进行采集,并处理为压力值。 6. A kind of graphene capacitive touch screen with pressure sensitivity according to claim 1, is characterized in that: described main control chip (207) changes the capacitance that the upper and lower two layers of graphene at touch position place constitutes. collected and processed as pressure values. 7.根据权利要求1所述一种具有压力感应的石墨烯电容式触摸屏,其特征在于压力感应范围为0.1Pa~100kPa。 7. A graphene capacitive touch screen with pressure sensitivity according to claim 1, characterized in that the pressure sensing range is 0.1Pa~100kPa.
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Cited By (6)

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CN105511702A (en) * 2015-12-28 2016-04-20 中国科学院重庆绿色智能技术研究院 Graphene capacitive touch screen with pressure induction function
CN106546362A (en) * 2016-10-27 2017-03-29 中国科学院重庆绿色智能技术研究院 A kind of capacitance pressure transducer, based on Graphene
CN107329597A (en) * 2017-08-23 2017-11-07 湖南中力皓电子科技有限公司 One kind reinforces TrackPoint
WO2018039939A1 (en) * 2016-08-30 2018-03-08 华为技术有限公司 Capacitive pressure sensor and fabrication method thereof
CN112864204A (en) * 2021-01-13 2021-05-28 京东方科技集团股份有限公司 Display panel, touch detection method thereof and display device
CN112903146A (en) * 2021-01-22 2021-06-04 中国科学院重庆绿色智能技术研究院 Preparation method and application of dermal-based flexible pressure sensor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105511702A (en) * 2015-12-28 2016-04-20 中国科学院重庆绿色智能技术研究院 Graphene capacitive touch screen with pressure induction function
WO2018039939A1 (en) * 2016-08-30 2018-03-08 华为技术有限公司 Capacitive pressure sensor and fabrication method thereof
CN106546362A (en) * 2016-10-27 2017-03-29 中国科学院重庆绿色智能技术研究院 A kind of capacitance pressure transducer, based on Graphene
CN107329597A (en) * 2017-08-23 2017-11-07 湖南中力皓电子科技有限公司 One kind reinforces TrackPoint
CN107329597B (en) * 2017-08-23 2023-09-29 湖南中力皓电子科技有限公司 Reinforced pointing rod
CN112864204A (en) * 2021-01-13 2021-05-28 京东方科技集团股份有限公司 Display panel, touch detection method thereof and display device
CN112864204B (en) * 2021-01-13 2024-06-28 京东方科技集团股份有限公司 Display panel, touch detection method thereof and display device
CN112903146A (en) * 2021-01-22 2021-06-04 中国科学院重庆绿色智能技术研究院 Preparation method and application of dermal-based flexible pressure sensor
CN112903146B (en) * 2021-01-22 2022-07-15 中国科学院重庆绿色智能技术研究院 A kind of preparation method and application of dermis-based flexible pressure sensor

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