WO2014153909A1 - 电容式触摸屏及显示装置 - Google Patents

电容式触摸屏及显示装置 Download PDF

Info

Publication number
WO2014153909A1
WO2014153909A1 PCT/CN2013/080658 CN2013080658W WO2014153909A1 WO 2014153909 A1 WO2014153909 A1 WO 2014153909A1 CN 2013080658 W CN2013080658 W CN 2013080658W WO 2014153909 A1 WO2014153909 A1 WO 2014153909A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode unit
touch screen
driving electrode
pattern
capacitive touch
Prior art date
Application number
PCT/CN2013/080658
Other languages
English (en)
French (fr)
Inventor
杨盛际
Original Assignee
北京京东方光电科技有限公司
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京京东方光电科技有限公司, 京东方科技集团股份有限公司 filed Critical 北京京东方光电科技有限公司
Priority to US14/344,229 priority Critical patent/US20150268761A1/en
Publication of WO2014153909A1 publication Critical patent/WO2014153909A1/zh

Links

Classifications

    • 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04101—2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Definitions

  • Embodiments of the present invention relate to a capacitive touch screen and display device. Background technique
  • touch screens can be mainly divided into: resistive touch screen, capacitive touch screen. Since resistive touch screens are limited by multi-touch control, more than four manufacturers are focusing more on the development of capacitive touch screens.
  • the capacitive touch screen can sense the current of the human body.
  • the finger touches the metal layer the user and the touch screen surface form a coupled capacitor.
  • the capacitor is a direct conductor, which can be accurately calculated by detecting the change of the output signal. Touch the location of the point.
  • the prior art capacitive touch screen generally uses a structure of a diamond-shaped ITO, that is, the structure of the driving electrode unit and the sensing electrode unit are both rhombic structures.
  • the layers of ITO are respectively connected by bridging
  • FIG. 2 is a pattern of the sensing electrode unit and the driving electrode unit in one pixel unit.
  • the inventors have found that the prior art capacitive touch screen has at least the following problems: Due to the use of the diamond-shaped electrode, the laterally arranged drive electrode resistance value is often much larger than the longitudinally arranged induction electrode resistance value; The small positive facing area makes the formed coupling capacitance small, which results in the prior art capacitive touch screen not being effective in waterproofing, floating, and anti-interference. Summary of the invention
  • Embodiments of the present invention provide a capacitive touch screen and a display device, which improve the waterproof, floating, and anti-interference effects of the capacitive touch screen by adjusting the patterns of the sensing electrode unit and the driving electrode unit.
  • a capacitive touch screen includes at least one column/row sensing electrode line and at least one row/column driving electrode line.
  • the sensing electrode line includes a plurality of sensing electrode units, the adjacent sensing electrode units are bridged in series, and the sensing electrode unit is provided with four outwardly protruding protrusions;
  • the driving electrode line includes a plurality of driving electrode units, the adjacent driving electrode units are bridged in series, and the driving electrode unit is provided with four inwardly recessed voids;
  • the pattern of the sensing electrode unit is complementary and non-contact with the pattern of the driving electrode unit. Further, the sensing electrode unit has an axisymmetric structure along the sensing electrode line where the sensing electrode unit is located; and the driving electrode unit has an axisymmetric structure along the driving electrode line where the driving electrode unit is located. Metal oxide.
  • a pattern of the empty electrode is disposed between the pattern of the sensing electrode unit and the pattern of the driving electrode unit.
  • an interval between the pattern of the empty electrode and the pattern of the sensing electrode unit is the same as the interval between the pattern of the empty electrode and the pattern of the driving electrode unit.
  • a display device comprising the capacitive touch screen of any of the above.
  • a capacitive touch screen is provided with four outwardly protruding protrusions in the sensing electrode unit, and four inwardly recessed spaces are provided in the driving electrode unit, and the pattern of the sensing electrode unit and the driving electrode unit are provided.
  • the patterns are complementary and non-contact, which reduces the resistance value of the driving electrode unit, increases the coupling capacitance of the capacitive touch screen, and improves the waterproof and hanging of the capacitive touch screen. Empty and anti-interference performance.
  • the present invention provides a display device comprising the above touch screen, which has all the advantages possessed by the touch screen.
  • 1 is a pattern of a touch screen sensing electrode line and a driving electrode line of the prior art
  • FIG. 2 is a diagram of a prior art single-pixel touch screen sensing electrode unit and driving electrode unit
  • FIG. 3 is a pattern of a touch screen sensing electrode line and a driving electrode line according to an embodiment of the present invention
  • FIG. 4 is a pattern of a touch panel sensing electrode unit and a driving electrode unit in a single pixel according to an embodiment of the invention
  • FIG. 5 is a diagram of a pattern of a touch panel sensing electrode unit and a driving electrode unit in a single pixel according to an embodiment of the present invention
  • FIG. 6 is a graph of a touch screen and a prior art touch screen output signal according to an embodiment of the present invention. detailed description
  • the embodiment of the invention provides a capacitive touch screen, which improves the waterproof, floating and anti-interference effects of the capacitive touch screen by adjusting the pattern of the sensing electrode unit and the driving electrode unit.
  • an embodiment of the present invention provides a capacitive touch screen including at least one column of sensing electrode lines and at least one row of driving electrode lines.
  • the sensing electrode line includes a plurality of sensing electrode units 1 , the adjacent sensing electrode units 1 are bridged in series with each other, and the sensing electrode unit 1 is provided with four outwardly protruding protrusions.
  • the driving electrode line includes a plurality of driving electrode units 2, the adjacent driving electrode units 1 are bridged in series, and the driving electrode unit 1 is provided with four inwardly recessed spaces.
  • the pattern of the sensing electrode unit 1 is complementary to the pattern of the driving electrode unit 2 and is not in contact.
  • FIG. 4 is a sensing unit 1 and a driving electrode unit in a pixel unit.
  • the sensing electrode unit 1 is provided with four protrusions protruding outward, and the adjacent sensing electrode units are bridged in series.
  • the shape of the protrusion has various possible shapes.
  • the protrusion may be a common shape such as a pointed shape, a rounded shape, a semicircular shape, or a parallelogram. Therefore, there are many possible cases for the pattern of the sensing electrode unit.
  • the shape of the protrusion may be adjusted to make the pattern of the formed sensing electrode unit have higher symmetry, for example, the sensing electrode unit forms an axisymmetric pattern, of course.
  • induction electrode single The element can also form other patterns that are not axisymmetric.
  • the driving electrode unit 2 is provided with four inwardly recessed spaces, wherein adjacent driving electrode units 2 are bridged in series.
  • the pattern of the sensing electrode unit 1 and the pattern of the driving electrode unit 2 are complementarily matched to collectively constitute an ITO pattern in one pixel unit. Therefore, there are many possible cases for driving the gap pattern of the electrode unit, and there are many possible cases for the pattern formed by the driving electrode unit, which will not be described herein.
  • the sensing electrode line and the driving electrode line are arranged to intersect each other.
  • the capacitive touch screen shown in FIG. 3 includes three columns of sensing electrode lines and three rows of driving electrode lines, and the sensing electrode lines and the driving electrode lines are arranged alternately with each other to form an ITO electrode in the capacitive touch screen. picture of.
  • the sensing electrode unit has an axisymmetric structure along the sensing electrode line where the sensing electrode unit is located; the driving electrode unit has an axisymmetric structure along the driving electrode line where the driving electrode unit is located.
  • the sensing electrode units in the second column of sensing electrodes are axially symmetric along the second column of sensing electrodes.
  • the material of the sensing electrode unit and the driving electrode unit is ITO indium tin metal oxide.
  • a pattern of empty electrodes is disposed between the pattern of the sensing electrode unit and the pattern of the driving electrode unit.
  • the empty electrode 3 is disposed in the gap between the sensing electrode unit 1 and the driving electrode unit 1.
  • the purpose of arranging the empty electrodes is to fill the gaps in the ITO pattern formed by the sensing electrode unit and the driving electrode unit, thereby preventing the gap from causing the visual non-uniformity of the capacitive touch screen.
  • the interval between the pattern of the empty electrode and the pattern of the sensing electrode unit is the same as the interval between the pattern of the empty electrode and the pattern of the driving electrode unit.
  • a capacitive touch screen is provided with four outwardly protruding protrusions in the sensing electrode unit, and four inwardly recessed spaces are provided in the driving electrode unit, and the pattern of the sensing electrode unit and the driving electrode unit are provided.
  • the patterns are complementary and do not contact, thereby reducing the resistance value of the driving electrode unit, increasing the coupling capacitance of the capacitive touch screen, and improving the waterproof, floating and anti-interference effects of the capacitive touch screen.
  • the resistance values of the sensing electrode unit and the driving electrode unit are estimated.
  • the size of the pixel unit is 5.75 mm ⁇ 5.75 mm
  • the interval between the sensing electrode unit and the driving electrode unit is 30 um
  • the materials of the sensing electrode unit and the driving electrode unit are both ITO indium tin metal oxide.
  • the thickness of the ITO film is 500A
  • the surface resistivity of the ITO is 52 ⁇
  • the adjacent driving electrode units are connected in series by a metal bridge.
  • the thickness of the metal bridge is 2200 A
  • the surface resistivity of the metal bridge is 0.55 ⁇ .
  • the triangulation method can be used to calculate the resistance value of the crucible electrode by decomposing the crucible electrode into a plurality of triangular crucible electrode blocks and integrating the same.
  • the resistance value of the sensing electrode unit of the embodiment of the present invention under the above reference conditions is 233.70 ⁇
  • the resistance value of the driving electrode unit is 370.86 ⁇
  • the resistance of the sensor cell is 233.47 ⁇
  • the resistance of the driving electrode unit is 829.67 ⁇ . It is apparent that the embodiment of the present invention reduces the resistance value of the driving electrode unit by adjusting the pattern of the sensing electrode unit and the driving electrode unit so that the resistance value of the sensing electrode unit remains unchanged.
  • the resistance value of the sensing electrode line the resistance of the sensing electrode unit * the number of sensing electrode units
  • the resistance value of the driving electrode line the driving electrode unit resistance * the number of driving electrode units. Therefore, the estimated electrode unit and the drive are estimated The resistance value of the moving electrode unit can be used to further grasp the resistance characteristics of the sensing electrode line and the driving electrode line.
  • the capacitance value of the sensing electrode line is estimated.
  • the capacitive touch screen includes three rows of sensing electrode lines and three rows of driving electrode lines.
  • the size of the single pixel unit is 5.75mm ⁇ 5.75mm
  • the interval between the sensing electrode unit and the driving electrode unit is 30um
  • the materials of the sensing electrode unit and the driving electrode unit are both ITO indium tin metal oxide
  • the sensing electrode line has the first sensing electrode line from the left side, the third sensing electrode line from the left side, and the driving electrode line.
  • the divergence coupling produces a coupling capacitance, so the coupling capacitance is mainly affected by the facing area of the sensing electrode unit and the driving electrode unit.
  • the capacitance value of the second sensing electrode line from the left side is estimated, and the capacitance value of the sensing electrode line is 7.54 pf.
  • it is estimated that the capacitance of the sensory electrode line is about 1.33 pf. It is apparent that the embodiment of the present invention increases the facing area between the sensing electrode unit and the driving electrode unit by adjusting the pattern of the sensing electrode unit and the driving electrode unit, thereby increasing the coupling capacitance value of the touch screen.
  • the touch screen of the embodiment of the invention has an increased coupling capacitor value and a reduced resistance of the driving electrode. Therefore, when inputting the same voltage signal, the input signal curve can be as shown in FIG. 6.
  • the abscissa axis represents time, and the ordinate axis represents output current intensity.
  • Curve 11 is the output signal of the touch screen of the embodiment of the present invention without a finger touch.
  • Curve 12 is the output signal of the touch screen of the embodiment of the present invention in the case of a finger touch.
  • Curve 21 is the output signal of the touch screen in the prior art without finger touch.
  • Curve 22 is the output signal of the touch screen in the case of finger touch in the prior art.
  • the peak value of the output signal of the touch screen of the embodiment of the present invention is higher, that is, the signal-to-noise ratio of the touch screen of the embodiment of the present invention is higher under the same input condition.
  • the touch screen input of the embodiment of the present invention The attenuation rate of the outgoing signal is also faster than that of the prior art touch screen. It can be seen that the touch screen signal capture effect of the embodiment of the invention is better and the anti-interference effect is better.
  • the coupling capacitance of the touch screen is increased in the embodiment of the present invention, the water droplets have a smaller value of the capacitance change rate of the touch screen of the embodiment of the present invention. Therefore, the touch screen of the embodiment of the present invention has better waterproof and anti-floating effects.
  • the embodiment of the invention provides a capacitive touch screen, wherein four protruding protrusions are arranged in the sensing electrode unit, and four inwardly recessed gaps are arranged in the driving electrode unit, and the pattern of the sensing electrode unit and the driving electrode are provided.
  • the patterns of the cells are complementary and non-contact, thereby reducing the resistance value of the driving electrode unit, increasing the coupling capacitance of the capacitive touch screen, and improving the waterproof, floating and anti-interference effects of the capacitive touch screen.
  • the present invention provides a display device comprising the touch panel of the above embodiment, which has all the advantages possessed by the touch screen.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

本发明实施例公开了一种电容式触摸屏及显示装置。通过调整感应电极单元以及驱动电极单元的图案，提高了电容式触摸屏防水、悬空以及抗干扰的效果。本发明实施例的电容式触摸屏，包括至少一列感应电极线以及至少一行驱动电极线，感应电极线包括多个感应电极单元，相邻的感应电极单元桥接串联，感应电极单元中设置有四个向外突出的凸起；驱动电极线包括多个驱动电极单元，相邻的驱动电极单元桥接串联，驱动电极单元中设置有四个向内凹陷的空隙；感应电极单元的图案与驱动电极单元的图案互补匹配且并不接触。

Description

电容式触摸屏及显示装置 技术领域
本发明的实施例涉及一种电容式触摸屏及显示装置。 背景技术
触摸屏作为一种全新的输入设备， 因其快捷、 方便、 人机互动性好等特 点， 得到了越来越广泛的关注。 根据技术原理的不同， 触摸屏主要可分为： 电阻式触摸屏、 电容式触摸屏。 由于电阻式触摸屏受限于多点触控控制， 因 此 4艮多生产厂商将更多的精力集中在电容式触摸屏的开发研究上。
电容式触摸屏可以感应人体的电流， 当手指触摸在金属层上， 用户和触 摸屏表面形成一个耦合的电容， 对于高频电流来说， 电容是直接导体， 通过 检测输出信号变化即可以精确的计算出触摸点的位置。
如图 1所示， 现有技术的电容式触摸屏通常使用的是菱形 ITO的结构， 即驱动电极单元以及感应电极单元的结构均为菱形结构。 为了避免电极之间 的相互导通， 各层 ITO分别通过桥接方式相连， 图 2为一个像素单元内感应 电极单元与驱动电极单元的图案。但是发明人发现现有技术的电容式触摸屏 至少存在如下问题： 由于采用了菱形结构的电极， 导致横向排列的驱动电极 电阻值往往比纵向排列的感应电极电阻值要大很多； 另外， 由于电极之间的 正对面积较少， 使得形成的耦合电容较小， 导致现有技术的电容式触摸屏在 防水、 悬空以及抗干扰等方面效果不佳。 发明内容
本发明的实施例提供一种电容式触摸屏及显示装置，通过调整感应电极 单元以及驱动电极单元的图案， 提高了电容式触摸屏防水、 悬空以及抗干扰 的效果。 为解决上述技术问题， 本发明的实施例采用如下技术方案： 一种电容式触摸屏， 包括至少一列 /行感应电极线以及至少一行 /列驱动 电极线，
所述感应电极线包括多个感应电极单元，相邻的所述感应电极单元桥接 串联， 所述感应电极单元中设置有四个向外突出的凸起；
所述驱动电极线包括多个驱动电极单元，相邻的所述驱动电极单元桥接 串联， 所述驱动电极单元中设置有四个向内凹陷的空隙；
所述感应电极单元的图案与所述驱动电极单元的图案互补匹配且并不 接触。 进一步的，所述感应电极单元沿该感应电极单元所在的感应电极线呈轴 对称结构； 所述驱动电极单元沿该驱动电极单元所在的驱动电极线呈轴对称 结构。 金属氧化物。
进一步的，所述感应电极单元的图案与所述驱动电极单元的图案之间布 设有空电极的图案。
进一步的，所述空电极的图案和所述感应电极单元的图案之间的间隔与 所述空电极的图案和所述驱动电极单元的图案之间的间隔相同。 展蔽层。
一种显示装置， 包括上述任一所述的电容式触摸屏。
本发明实施例提供的一种电容式触摸屏，感应电极单元中设置有四个向 外突出的凸起， 驱动电极单元中设置有四个向内凹陷的空隙， 感应电极单元 的图案与驱动电极单元的图案互补匹配且并不接触， 降低了驱动电极单元的 电阻值， 增加了电容式触摸屏的耦合电容， 提高了电容式触摸屏的防水、 悬 空以及抗干扰的性能。此外本发明还提供了一种显示装置，包括上述触摸屏， 其具备触摸屏所拥有的一切优点。 附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图 作筒单地介绍， 显而易见地， 下面描述中的附图仅仅涉及本发明的一些实施 例， 而非对本发明的限制。
图 1为现有技术的触摸屏感应电极线与驱动电极线的图案；
图 2为现有技术的单个像素内触摸屏感应电极单元与驱动电极单元的图 案；
图 3为本发明一个实施例触摸屏感应电极线与驱动电极线的图案； 图 4为本发明一个实施例的单个像素内触摸屏感应电极单元与驱动电极 单元的图案；
图 5为本发明一个实施例的单个像素内触摸屏感应电极单元与驱动电极 单元的图案；
图 6为本发明一个实施例触摸屏与现有技术触摸屏输出信号曲线图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
除非另作定义， 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权 利要求书中使用的 "第一"、 "第二" 以及类似的词语并不表示任何顺序、 数 量或者重要性， 而只是用来区分不同的组成部分。 同样， "一个" 或者 "一" 等类似词语也不表示数量限制， 而是表示存在至少一个。 "包括" 或者 "包 含" 等类似的词语意指出现在 "包括" 或者 "包含" 前面的元件或者物件涵 盖出现在 "包括" 或者 "包含" 后面列举的元件或者物件及其等同， 并不排 除其他元件或者物件。 "连接" 或者 "相连" 等类似的词语并非限定于物理 的或者机械的连接， 而是可以包括电性的连接， 不管是直接的还是间接的。 "上"、 "下"、 "左"、 "右" 等仅用于表示相对位置关系， 当被描述对象的绝 对位置改变后， 则该相对位置关系也可能相应地改变。
本发明实施例提供了一种电容式触摸屏，通过调整感应电极单元以及驱 动电极单元的图案， 提高了电容式触摸屏防水、 悬空以及抗干扰的效果。
如图 3所示， 本发明实施例提供一种电容式触摸屏， 其中包括至少一列 感应电极线以及至少一行驱动电极线。 本领域的技术人员可以理解， 其中的 "行" 和 "列" 是可以互相替换的， 即， 本实施例提供的电容式触摸屏也可 以包括至少一行感应电极线以及至少一列驱动电极线。感应电极线包括多个 感应电极单元 1 , 相邻的感应电极单元 1彼此桥接串联， 并且感应电极单元 1 中设置有四个向外突出的凸起。 驱动电极线包括多个驱动电极单元 2, 相 邻的驱动电极单元 1桥接串联， 并且驱动电极单元 1中设置有四个向内凹陷 的空隙。感应电极单元 1的图案与驱动电极单元 2的图案互补匹配且并不接 触。
如图 4所示， 图 4为一个像素单元内感应电极单元 1以及驱动电极单元
2组成的图案。 其中， 感应电极单元 1设置有四个向外突出的凸起， 相邻的 感应电极单元桥接串联。 事实上， 该凸起的形状有多种可能的形状， 举例来 说， 凸起可为尖角形、 圓角形、 半圓形、 平行四边形等常用形状。 因此， 感 应电极单元的图案有多种可能的情况。 另外， 为了达到美观、 便于计算电阻 值等优点，还可以调整该凸起的形状以使形成的感应电极单元的图案具有较 高的对称性， 例如， 令感应电极单元形成轴对称的图案， 当然， 感应电极单 元也可形成非轴对称的其他图案。 另一方面， 驱动电极单元 2设置四个向内 凹陷的空隙， 其中， 相邻的驱动电极单元 2桥接串联。 感应电极单元 1的图 案与驱动电极单元 2的图案互补匹配，共同构成一个像素单元内的 ITO图案。 因此， 驱动电极单元的空隙图案也有多种可能的情况， 而驱动电极单元形成 的图案亦有多种可能的情况， 在此不做赘述。 另外， 感应电极单元与驱动电 极单元的图案之间不接触，保证了感应电极单元与驱动电极单元之间不存在 由接触产生的电连接的情况，使得感应电极单元与驱动电极单元之间保持绝 进一步的， 感应电极线与驱动电极线相互交叉相间排列。 如图 3所示， 图 3所示的电容式触摸屏中包含三列感应电极线、 三行驱动电极线， 感应电 极线与驱动电极线之间相互交叉相间排列，共同构成电容式触摸屏中 ITO电 极的图案。
进一步的，感应电极单元沿该感应电极单元所在的感应电极线呈轴对称 结构； 驱动电极单元沿该驱动电极单元所在的驱动电极线呈轴对称结构。 举 例来说， 如图 3所示， 以从左侧数第二列感应电极线为例， 第二列感应电极 线中的感应电极单元沿该第二列感应电极线呈轴对称结构。
进一步的，感应电极单元以及驱动电极单元的材料为 ITO铟锡金属氧化 物。
进一步的，感应电极单元的图案与驱动电极单元的图案之间布设有空电 极的图案。 如图 5所示， 空电极 3布设于感应电极单元 1与驱动电极单元 1 之间的空隙里。布设空电极的目的是为了填补感应电极单元与驱动电极单元 构成 ITO图案中可能出现的空隙，从而防止空隙带来电容式触摸屏在视觉外 观上的不均匀性。显然， 空电极的图案也有多种可能的情况，在此不做赘述。
进一步的， 空电极的图案和感应电极单元的图案之间的间隔与空电极的 图案和驱动电极单元的图案之间的间隔相同。 展蔽层。
本发明实施例提供的一种电容式触摸屏，感应电极单元中设置有四个向 外突出的凸起， 驱动电极单元中设置有四个向内凹陷的空隙， 感应电极单元 的图案与驱动电极单元的图案互补匹配且并不接触， 由此降低了驱动电极单 元的电阻值，增加了电容式触摸屏的耦合电容，提高了电容式触摸屏的防水、 悬空以及抗干扰的效果。
为了本领域技术人员更好的理解本发明实施例提供的电容式触摸屏的 技术方案以及该技术方案带来的有益效果， 下面通过具体实施例对本发明提 供的电容式触摸屏进行详细的分析。
首先， 以图 4所示的一个像素单元为例， 估算感应电极单元以及驱动电 极单元的电阻值。 如图 4所示， 其中， 像素单元的尺寸为 5.75mmx5.75mm, 感应电极单元与驱动电极单元之间的间隔为 30um, 感应电极单元与驱动电 极单元的材料均为 ITO铟锡金属氧化物， ITO的膜层厚度为 500A, ITO的 表面电阻率为 52Ω, 相邻的驱动电极单元通过金属桥桥接串联， 其中， 金属 桥的膜层厚度为 2200 A,金属桥的表面电阻率为 0.55Ω。利用上述参考条件， 行估算。在此可利用三角积分方法，通过将 ΙΤΟ电极分解为若干个三角形 ΙΤΟ 电极块并利用积分的方法来计算 ΙΤΟ电极的电阻值。
利用三角积分方法，估算出在上述参考条件下本发明实施例的感应电极 单元的电阻值为 233.70Ω、 驱动电极单元的电阻值为 370.86Ω。 同样的利用 相同方法和相同参考条件估算出现有技术的感应电极单元的电阻值为 233.47Ω , 驱动电极单元的电阻值为 829.67Ω。 ^艮显然， 本发明实施例通过 调整感应电极单元以及驱动电极单元的图案，使得在感应电极单元电阻值保 持不变的情况下， 降低了驱动电极单元的电阻值。 需要说明的是， 感应电极 线的电阻值 =感应电极单元电阻 *感应电极单元个数， 驱动电极线的电阻值 = 驱动电极单元电阻 *驱动电极单元个数。 因此， 估算出感应电极单元以及驱 动电极单元的电阻值可以用以进一步掌握感应电极线以及驱动电极线的电 阻特性。
另一方面， 以图 3所示的触摸屏为例， 估算感应电极线的电容值。 如图 3所示，此电容式触摸屏中包括三列感应电极线、三行驱动电极线的触摸屏。 其中， 单个像素单元的尺寸为 5.75mmx5.75mm, 感应电极单元与驱动电极 单元之间的间隔为 30um, 感应电极单元与驱动电极单元的材料均为 ITO铟 锡金属氧化物， ITO的膜层厚度为 500A, 金属桥的膜层厚度为 2200 A, 感 应电极单元与驱动电极单元之间的绝缘层的膜层厚度为 2000 A,介电常数为 ε =6.5F/m。
如图 3所示， 以从左侧数第二条感应电极线为例， 该感应电极线与从左 侧数第一条感应电极线、从左侧数第三条感应电极线以及驱动电极线发散耦 合产生耦合电容， 因此该耦合电容主要受感应电极单元以及驱动电极单元的 正对面积的影响。在上述参考条件下对从左侧数第二条感应电极线的电容值 进行估算， 其感应电极线的电容值为 7.54pf。 同样的利用相同参考条件估算 出现有技术的感应电极线的电容值约为 1.33pf。 很显然， 本发明实施例通过 调整感应电极单元以及驱动电极单元的图案，增大了感应电极单元与驱动电 极单元之间正对面积， 从而提高了触摸屏的耦合电容值。
本发明实施例的触摸屏相比于现有技术触摸屏， 耦合电容值得到了增 加， 驱动电极的电阻得到了减少。 因此在输入相同的电压信号时， 输入信号 曲线可如图 6所示。 其中， 横坐标轴表示时间， 纵坐标轴表示输出的电流强 度。 曲线 11 为在没有手指触摸情况下本发明实施例的触摸屏的输出信号。 曲线 12为手指触摸情况下本发明实施例的触摸屏的输出信号。 曲线 21为现 有技术中在没有手指触摸情况下， 触摸屏的输出信号。 曲线 22为现有技术 中手指触摸情况下， 触摸屏的输出信号。 通过对比可以发现， 本发明实施例 的触摸屏输出信号峰值更高， 也就是说相同输入情况下， 本发明实施例的触 摸屏的信噪比更高。 而且， 在输出信号衰减方面， 本发明实施例的触摸屏输 出信号的衰减速度也比现有技术中触摸屏的输出信号衰减速度快。 由此可以 看出， 本发明实施例的触摸屏信号捕捉效果更好且抗干扰效果更佳。 另外， 由于本发明实施例触摸屏的耦合电容得到了增加， 因而水滴对本发明实施例 的触摸屏产生的电容改变率值更小， 因此， 本发明实施例的触摸屏的防水以 及抗悬空效果更好。
本发明实施例提供一种电容式触摸屏， 其中， 感应电极单元中设置有四 个向外突出的凸起， 驱动电极单元中设置有四个向内凹陷的空隙， 感应电极 单元的图案与驱动电极单元的图案互补匹配且并不接触，从而降低了驱动电 极单元的电阻值， 增加了电容式触摸屏的耦合电容， 提高了电容式触摸屏的 防水、 悬空以及抗干扰的效果。
此外本发明还提供了一种显示装置， 包括上述实施例所述触摸屏， 其具 备所述触摸屏所拥有的一切优点。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限 于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易 想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护 范围应以所述权利要求的保护范围为准。

Claims

权利要求书
1、 一种电容式触摸屏， 包括至少一列 /行感应电极线以及至少一行 /列驱 动电极线， 其中，
所述感应电极线包括多个感应电极单元，相邻的所述感应电极单元桥接 串联， 所述感应电极单元中设置有四个向外突出的凸起；
所述驱动电极线包括多个驱动电极单元，相邻的所述驱动电极单元桥接 串联， 所述驱动电极单元中设置有四个向内凹陷的空隙；
所述感应电极单元的图案与所述驱动电极单元的图案互补匹配且并不 接触。
2、 根据权利要求 1 所述的电容式触摸屏， 其中， 所述感应电极线与所 述驱动电极线相互交叉相间排列。
3、 根据权利要求 1-2 中任一项所述的电容式触摸屏， 其中， 所述感应 电极单元沿该感应电极单元所在的感应电极线呈轴对称结构； 所述驱动电极 单元沿该驱动电极单元所在的驱动电极线呈轴对称结构。
4、 根据权利要求 1-3 中任一项所述的电容式触摸屏， 其中， 所述感应 电极单元以及所述驱动电极单元的材料为 ITO铟锡金属氧化物。
5、 根据权利要求 1-4 中任一项所述的电容式触摸屏， 其中， 所述感应 电极单元的图案与所述驱动电极单元的图案之间布设有空电极的图案。
6、 根据权利要求 5所述的电容式触摸屏， 其中， 所述空电极的图案和 所述感应电极单元的图案之间的间隔与所述空电极的图案和所述驱动电极 单元的图案之间的间隔相同。
7、 根据权利要求 1-6 中任一项所述的电容式触摸屏， 其中， 所述感应 电极线与所述驱动电极线之间至少设置有一层绝缘屏蔽层。
8、 一种显示装置， 包括如权利要求 1至 7中任一项所述的电容式触摸 屏。
PCT/CN2013/080658 2013-03-26 2013-08-01 电容式触摸屏及显示装置 WO2014153909A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/344,229 US20150268761A1 (en) 2013-03-26 2013-08-01 Capacitive touch panel and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013100996499A CN103186306A (zh) 2013-03-26 2013-03-26 电容式触摸屏及显示装置
CN201310099649.9 2013-03-26

Publications (1)

Publication Number Publication Date
WO2014153909A1 true WO2014153909A1 (zh) 2014-10-02

Family

ID=48677493

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/080658 WO2014153909A1 (zh) 2013-03-26 2013-08-01 电容式触摸屏及显示装置

Country Status (3)

Country Link
US (1) US20150268761A1 (zh)
CN (1) CN103186306A (zh)
WO (1) WO2014153909A1 (zh)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103186306A (zh) * 2013-03-26 2013-07-03 北京京东方光电科技有限公司 电容式触摸屏及显示装置
CN103455227B (zh) 2013-08-30 2016-12-28 京东方科技集团股份有限公司 电容式触摸屏及显示装置
CN103543895A (zh) * 2013-09-30 2014-01-29 领威联芯（北京）科技有限公司 一种触摸屏电极装置及使用该电极装置的互电容触摸屏
KR102192035B1 (ko) 2013-12-02 2020-12-17 삼성디스플레이 주식회사 접촉 감지 센서를 포함하는 플렉서블 표시 장치
KR102174817B1 (ko) * 2013-12-02 2020-11-05 엘지디스플레이 주식회사 터치센서 일체형 표시장치
CN104375734A (zh) * 2014-12-04 2015-02-25 合肥鑫晟光电科技有限公司 触控基板及其制备方法、触控显示面板、触控显示装置
CN104391604B (zh) * 2014-12-09 2018-03-27 上海天马微电子有限公司 触控电极层及触控装置
CN109766033B (zh) * 2015-06-23 2022-07-05 群创光电股份有限公司 触控显示面板
CN106559065A (zh) * 2015-11-13 2017-04-05 上海宏昊企业发展有限公司 自电容互电容一体式触摸按键
KR20180069165A (ko) * 2016-12-14 2018-06-25 삼성디스플레이 주식회사 터치 센서 및 이를 포함하는 표시 장치
CN106648240B (zh) * 2016-12-26 2019-05-31 武汉华星光电技术有限公司 触控电极及其制作方法
CN107092399B (zh) * 2017-05-12 2019-09-13 京东方科技集团股份有限公司 一种oled阵列基板及其制作方法、触控显示装置
CN107301003B (zh) * 2017-08-08 2021-03-23 京东方科技集团股份有限公司 一种触控面板、其制作方法、触摸屏及显示装置
CN207611365U (zh) * 2017-11-30 2018-07-13 云谷（固安）科技有限公司 一种触控面板及显示装置
US11073955B2 (en) * 2018-09-12 2021-07-27 Samsung Display Co., Ltd. Display device
CN111552414B (zh) * 2020-04-24 2023-12-01 京东方科技集团股份有限公司 一种触控基板和显示面板
CN111766978B (zh) 2020-06-12 2021-09-24 深圳市华星光电半导体显示技术有限公司 触控组件及触控显示装置
CN111651091A (zh) * 2020-06-22 2020-09-11 武汉华星光电半导体显示技术有限公司 触控电极结构及触控显示面板
CN111651090A (zh) 2020-06-22 2020-09-11 武汉华星光电半导体显示技术有限公司 触控电极结构及触控显示面板
KR20220000025A (ko) * 2020-06-24 2022-01-03 삼성디스플레이 주식회사 전자 장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101995993A (zh) * 2009-08-03 2011-03-30 爱特梅尔公司 触摸屏的电极布局
US20120262414A1 (en) * 2011-04-18 2012-10-18 Novatek Microelectronics Corp. Layout structure of capacitive touch panel
CN102799332A (zh) * 2012-09-04 2012-11-28 北京集创北方科技有限公司 一种嵌入式单层电容触摸屏
CN202677328U (zh) * 2011-03-08 2013-01-16 爱特梅尔公司 电极串和用于触摸屏的面板
CN103186306A (zh) * 2013-03-26 2013-07-03 北京京东方光电科技有限公司 电容式触摸屏及显示装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8593410B2 (en) * 2009-04-10 2013-11-26 Apple Inc. Touch sensor panel design
TWI412815B (zh) * 2010-05-28 2013-10-21 Innolux Corp 具有多區塊絕緣層之電極結構及其製造方法
EP2538313B1 (en) * 2011-06-20 2015-05-20 Melfas, Inc. Touch sensor panel
CN103649883B (zh) * 2011-07-11 2017-09-08 富士胶片株式会社 导电片及其制造方法、触摸屏以及显示装置
US20130154996A1 (en) * 2011-12-16 2013-06-20 Matthew Trend Touch Sensor Including Mutual Capacitance Electrodes and Self-Capacitance Electrodes
US9128571B2 (en) * 2012-07-23 2015-09-08 Texas Instruments Incorporated Capacitive touch panel having improved response characteristics
KR102056110B1 (ko) * 2012-10-04 2019-12-16 삼성전자주식회사 터치 패널
CN202815806U (zh) * 2012-10-08 2013-03-20 江西联创电子有限公司 一种单层多点电容屏传感器的图案结构
US9116586B2 (en) * 2012-12-13 2015-08-25 Atmel Corporation Uniform-density coplanar touch sensor
TWI511255B (zh) * 2013-01-22 2015-12-01 Henghao Technology Co Ltd 觸控電極裝置
CN203117954U (zh) * 2013-03-26 2013-08-07 北京京东方光电科技有限公司 电容式触摸屏及显示装置
TW201439829A (zh) * 2013-04-01 2014-10-16 Wintek Corp 觸控面板
TW201445621A (zh) * 2013-05-24 2014-12-01 Wintek Corp 觸控感測電極結構及觸控裝置
KR20150091936A (ko) * 2014-02-04 2015-08-12 주식회사 동부하이텍 터치 패널 및 이를 포함하는 터치 스크린
KR101527320B1 (ko) * 2014-02-26 2015-06-09 하이디스 테크놀로지 주식회사 매트릭스 스위칭 타입 터치패널

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101995993A (zh) * 2009-08-03 2011-03-30 爱特梅尔公司 触摸屏的电极布局
CN202677328U (zh) * 2011-03-08 2013-01-16 爱特梅尔公司 电极串和用于触摸屏的面板
US20120262414A1 (en) * 2011-04-18 2012-10-18 Novatek Microelectronics Corp. Layout structure of capacitive touch panel
CN102799332A (zh) * 2012-09-04 2012-11-28 北京集创北方科技有限公司 一种嵌入式单层电容触摸屏
CN103186306A (zh) * 2013-03-26 2013-07-03 北京京东方光电科技有限公司 电容式触摸屏及显示装置

Also Published As

Publication number Publication date
US20150268761A1 (en) 2015-09-24
CN103186306A (zh) 2013-07-03

Similar Documents

Publication Publication Date Title
WO2014153909A1 (zh) 电容式触摸屏及显示装置
CN109375818B (zh) 触控装置及其驱动方法、触控显示装置及其驱动方法
TWI436256B (zh) Mutual capacitive touchpad and modular mutual capacitive touchpad
US8797290B2 (en) Sense electrode spine interpolation
CN103455227B (zh) 电容式触摸屏及显示装置
CN106502454A (zh) 触控显示面板及其制造方法
TWM417607U (en) Touch panel device with dual sensing interface
JP2010108505A (ja) 交互静電容量式タッチパネル及びコンビ式交互静電容量式タッチパネル
WO2017004975A1 (zh) 电容触摸屏及其制备方法、触控装置
CN102591541A (zh) 一种单层ito的布线结构
CN104063082A (zh) 触控感应电极结构
TWI559198B (zh) A touch panel of the sensing structure
TWM410924U (en) Projection-type capacitance touch panel with sensitivity adjustment structure
WO2016004719A1 (zh) 阵列基板及制备方法、触控显示装置
CN104571760B (zh) 具有触控功能的面板及其触控位置检测方法
CN101930143A (zh) 电子墨水显示面板及其形成方法
TWI459252B (zh) 觸控式感應元件及導電電極結構
CN203117954U (zh) 电容式触摸屏及显示装置
TWI623862B (zh) 觸控面板
CN106648240A (zh) 触控电极及其制作方法
WO2015043047A1 (zh) 一种互电容式的触摸屏
TW201445377A (zh) 觸控面板及其感應電極結構
TW201401146A (zh) 無邊框單層感測器面板
WO2014139213A1 (zh) 电容式触控面板和触控式显示装置
JP2013254360A (ja) タッチパネル

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14344229

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13880415

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: 13880415

Country of ref document: EP

Kind code of ref document: A1