WO2022041709A1 - 触控屏及具有所述触控屏的输入装置 - Google Patents

触控屏及具有所述触控屏的输入装置 Download PDF

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WO2022041709A1
WO2022041709A1 PCT/CN2021/082488 CN2021082488W WO2022041709A1 WO 2022041709 A1 WO2022041709 A1 WO 2022041709A1 CN 2021082488 W CN2021082488 W CN 2021082488W WO 2022041709 A1 WO2022041709 A1 WO 2022041709A1
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touch screen
sensing
channels
active pen
touch
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PCT/CN2021/082488
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English (en)
French (fr)
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陈箭雾
侯卫京
曹兴
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敦泰电子（深圳）有限公司
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Publication of WO2022041709A1 publication Critical patent/WO2022041709A1/zh

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    • 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

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  • the utility model relates to the technical field of touch control, in particular to a touch screen and an input device having the touch screen.
  • an active pen combined with a touch screen as an input device has been widely used in various fields.
  • the capacitive coupling between the active pen and the touch screen can obtain the position and the tilt angle of the active pen, and the inclination angle is used to calibrate the position of the active pen.
  • the center of gravity of the pen is completely coincident with the position of the pen tip.
  • the center of gravity of the active pen tip will shift a certain distance along the direction of the inclination angle.
  • the tilt angle of the active pen is used to calibrate the position deviation caused by the offset of the center of gravity. Otherwise, the touch position displayed on the touch screen may be below the active pen, which affects the normal input of the user.
  • the electrode structure of the existing touch screen sensor usually has a large blind area, and the blind area can also be called a touch invalid area.
  • the active pen touches because the contact area of the pen tip is small, and the blind area size is large, it is easy to cause the active pen to enter.
  • the change in touch sensing caused by the coupling between the electrodes and the electrodes in the touch screen is too small, so although the actual tilt angle of the active pen is the same in each position, the tilt angle calculated at different positions is very different, which affects the touch of the active pen. Control accuracy and linearity.
  • the utility model provides a touch screen, which includes a driving layer and a sensing layer, the driving layer includes a plurality of driving channels, the sensing layer includes a plurality of sensing channels, and the sensing channels and the driving channels are arranged crosswise, so that the Branches are arranged on the side of the sensing channel, and the branches on two adjacent sensing channels are alternately arranged.
  • the sensing channel, the branch and the driving channel are rectangular.
  • a plurality of the sensing channels are arranged in parallel with each other, and a plurality of the driving channels are arranged in parallel with each other, and the sensing channels and the driving channels are arranged in a vertical intersection.
  • the extending direction of a plurality of the branches is perpendicular to the extending direction of the sensing channel.
  • the utility model also provides an input device, comprising an active pen, the above-mentioned touch screen and a touch chip.
  • the active pen is provided with two electrodes, which are a first electrode provided at the tip area of the pen and a second electrode provided above the first electrode.
  • the above-mentioned touch screen and the input device with the touch screen are provided with branches on the sensing channel, which can reduce the size of the blind area between the electrode structures of the touch screen and increase the touch caused by the coupling of the active pen electrode and the touch screen electrode. Control the amount of sensor change, improve the recognition accuracy of the inclination angle of the active pen, thereby improving the touch accuracy and linearity of the active pen.
  • FIG. 1 is a schematic structural diagram of an input device in a preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a touch screen in a preferred embodiment of the present invention.
  • the first induction channel 211 The first induction channel 211
  • FIG. 1 is an input device 1 provided by a preferred embodiment of the present invention.
  • the input device 1 includes, but is not limited to, an active pen 10 , a touch screen 20 and a touch chip 30 .
  • the touch screen 20 is installed on an electronic device.
  • the electronic device is a smart phone, a personal computer or a smart wearable device.
  • the active pen 10 is used to generate touch sensing with the touch screen 20 when it contacts and approaches the touch screen 20 .
  • the touch control chip 30 is used for determining the touch position according to the touch sensing signal between the active pen 10 and the touch screen 20 .
  • the active pen 10 is provided with two electrodes, which are a first electrode 102 provided in the area of the pen tip 101 and a second electrode 103 provided above the first electrode 102 respectively.
  • the distance H between the first electrode 102 and the second electrode 103 is known.
  • the first electrode 102 and the second electrode 103 and the touch screen 20 will generate a touch sensing variation, which is passed through the touch chip 30
  • Two corresponding coordinate values are calculated, and then the horizontal distance between the two coordinates is obtained as h, and the inclination angle A of the active pen 10 is further determined according to the cosine function.
  • A 90°-arccos(h/H).
  • the touch screen 20 includes a sensing layer 21 and a driving layer 22 .
  • the sensing layer 21 includes a plurality of sensing channels 210, and a plurality of branches 2100 are provided on the sides of the sensing channels 210.
  • the driving layer 22 includes a plurality of driving channels 220 . The sensing channel 210 and the driving channel 220 are arranged to intersect.
  • the plurality of branches 2100 provided on the sensing channel 210 can reduce the size of the blind area between the channels, so that the sensing variable of the active pen 10 when touching the blind area position becomes larger than that of the prior art, The transition is more continuous, which improves the calculation accuracy of the touch point coordinates, thereby effectively improving the recognition accuracy of the inclination angle of the active pen 10 .
  • the sensing channel 210 , the branch 2100 and the driving channel 220 are rectangular.
  • a plurality of the sensing channels 210 are arranged parallel to each other
  • a plurality of the driving channels 220 are arranged parallel to each other
  • the sensing channels 210 and the driving channels 220 are arranged perpendicular to each other.
  • the extending direction of the plurality of branches 2100 is perpendicular to the extending direction of the sensing channel 210 .
  • any two adjacent channels of the sensing channel 210 are selected as examples, and the any two adjacent channels are the first sensing channel 211 and the second sensing channel 212 .
  • the first sensing channel 211 is insulated from the second sensing channel 212 .
  • a plurality of first branches 2101 are provided on both sides of the first sensing channel 211
  • a plurality of second branches 2102 are provided on both sides of the second sensing channel 212 .
  • the first branches 2101 and the second branches 2102 are arranged alternately.
  • the touch screen 20 acquires the first sensing signal and the second sensing signal generated by the two electrodes of the active pen 10 on the touch screen 20 respectively. Two sensing signals, and the tilt angle of the active pen 10 is determined according to the first sensing signal and the second sensing signal.
  • the two electrodes of the active pen 10 are signal transmitting devices, and the sensing channel 210 and the driving channel 220 of the touch screen 20 are both signal receiving devices.
  • the touch chip 30 receives the signal (coupling capacitance between the active pen electrode and the touch screen electrode) sent by the first electrode 102 on the pen tip 101 of the active pen 10 through the sensing channel 210 and the driving channel 220 of the touch screen 20 . ) to identify the first set of X and Y coordinate positions of the active pen tip.
  • the touch chip 30 further receives the signal (the active pen electrode and the touch sensor) sent by the second electrode 103 on the active pen 10 located above the first electrode 102 of the pen tip 101 through the sensing channel 210 and the driving channel 220 of the touch screen 20 .
  • the coupling capacitance of the screen electrode to identify the second set of X and Y coordinate positions of the active pen tip.
  • the touch chip 30 further calculates the inclination angle of the active pen 10 by calculating the distance between the two sets of coordinate positions and the distance between the first electrode 102 and the second electrode 103 on the active pen 10 .
  • the alternate arrangement of the first branch 2101 and the second branch 2102 can further reduce the size of the blind area of the transition area between the channels, so that when the active pen touches the entire screen, the amount of change is relatively large.
  • the touch accuracy and linearity of different positions of the screen are greatly improved, and the calculation accuracy of touch coordinates is greatly improved, so that the error between the tilt angle of the active pen recognized at different positions and the actual tilt angle is very small.
  • the touch screen and the input device with the touch screen provided by the present invention are provided with branches on the sensing channel, which can reduce the size of the blind area between the electrode structures of the touch screen and increase the active pen electrode and the touch screen electrode.
  • the amount of touch sensing variation generated by the coupling improves the recognition accuracy of the inclination angle of the active pen, thereby improving the touch accuracy and linearity of the active pen.

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  • 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

一种触控屏（20）及具有所述触控屏（20）的输入装置（1），所述输入装置（1）包括主动笔（10）、触控屏（20）及触控芯片（30）。所述触控屏（20）包括驱动层（22）及感应层（21），所述驱动层（22）包括多个驱动通道（220），所述感应层（21）包括多个感应通道（210），所述感应通道（210）与所述驱动通道（220）交叉设置，所述感应通道（210）的侧边设置有分支（2100），相邻两个感应通道（210）上的所述分支（2100）交替排列。所述触控屏（20）通过在感应通道（210）上设置分支（2100），以减小触控屏（20）的电极结构之间的盲区尺寸，增大主动笔（10）电极（102,103）与触控屏电极耦合产生的触控感应变化量，提高主动笔（10）倾斜角的识别精度，从而提高主动笔（10）的触控精度及线性度。

Description

触控屏及具有所述触控屏的输入装置
本申请要求于2020年08月26日提交，申请号为202021812934.2，实用新型名称为“触控屏及具有所述触控屏的输入装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本实用新型涉及触控技术领域，尤其涉及一种触控屏及具有所述触控屏的输入装置。
背景技术
随着科学技术的发展，主动笔搭配触控屏作为输入装置已经广泛应用于各个领域。在接触触控屏时，主动笔与触控屏之间的电容耦合可获得主动笔的位置和倾斜角，所述倾斜角是用来对主动笔位置的校准。当主动笔90°垂直于触摸屏时，笔的位置重心与笔尖位置完全重合，当主动笔倾斜一定角度后，主动笔笔头的重心会沿倾斜角方向偏移一定距离，这时就需要精确识别到主动笔倾斜的角度来校准这个重心偏移导致的位置偏差，否则触控屏显示的触摸位置可能会在主动笔下方，影响用户的正常输入。
现有的触控屏传感器的电极结构通常具有较大的盲区，盲区也可称为触摸无效区，当主动笔接触，由于笔头的接触面积较小，而盲区尺寸较大，容易导致主动笔内电极与触控屏内电极耦合产生的触控感应变化量太小，这样虽然主动笔的实际倾斜角各个位置是一样的，在不同位置计算出来的倾斜角差异很大，从而影响主动笔的触控精度及线性度。
实用新型内容
有鉴于此，有必要提供一种触控屏及具有所述触控屏的输入装置，可以减小触控屏的电极结构之间的盲区尺寸。
本实用新型提供一种触控屏，包括驱动层及感应层，所述驱动层包括多个驱动通道，所述感应层包括多个感应通道，所述感应通道与所述驱动通道交叉设置，所述感应通道的侧边设置有分支，相邻两个感应通道上的所述分支交替排列。
优选地，所述感应通道、所述分支及所述驱动通道呈矩形。
优选地，多个所述感应通道相互平行设置，多个所述驱动通道相互平行设置，所述感应通道与所述驱动通道垂直交叉设置。
优选地，多个所述分支的延伸方向垂直于所述感应通道的延伸方向。
本实用新型还提供一种输入装置，包括主动笔、上述的触控屏及触控芯片。
优选地，所述主动笔内设置有两个电极，分别为设于笔尖区域的第一电极和设于所述第一电极上方的第二电极。
上述触控屏及具有所述触控屏的输入装置在感应通道上设置分支，可以减小触控屏的电极结构之间的盲区尺寸，增大主动笔电极与触控屏电极耦合产生的触控感应变化量，提高主动笔倾斜角的识别精度，从而提高主动笔的触控精度及线性度。
附图说明
图1为本实用新型较佳实施方式中输入装置的结构示意图。
图2为本实用新型较佳实施方式中触控屏的图案示意图。
主要元件符号说明
输入装置                     1
主动笔                       10
笔尖                         101
第一电极                     102
第二电极                     103
触控屏                       20
感应层                       21
感应通道                     210
第一感应通道                 211
第二感应通道                 212
分支                         2100
第一分支                     2101
第二分支                     2102
驱动层                       22
驱动通道                     220
触控芯片                     30
如下具体实施方式将结合上述附图进一步说明本实用新型。
具体实施方式
为了能够更清楚地理解本实用新型的上述目的、特征和优点，下面结合附图和具体实施例对本实用新型进行详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本实用新型，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造 性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本实用新型的技术领域的技术人员通常理解的含义相同。本文中在本实用新型的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本实用新型。
请参阅图1所示，为本实用新型较佳实施方式所提供的输入装置1。
所述输入装置1包括，但不仅限于，主动笔10、触控屏20及触控芯片30。所述触控屏20装设于一电子装置上。在本实施方式中，所述电子装置为智能手机、个人电脑或智能穿戴式设备。所述主动笔10用于在接触及靠近所述触控屏20时与所述触控屏20产生触控感应。所述触控芯片30用于根据所述主动笔10与所述触控屏20之间的触控感应信号确定触控位置。
在本实施方式中，所述主动笔10内设置有两个电极，分别为设于笔尖101区域的第一电极102和设于第一电极102上方的第二电极103。所述第一电极102和所述第二电极103之间的距离H已知。当所述主动笔10接触或靠近所述触控屏20时，所述第一电极102和第二电极103和所述触控屏20会产生触控感应变化量，通过所述触控芯片30计算出两个对应的坐标值，进而得到两个坐标的水平距离为h，进一步根据余弦函数确定所述主动笔10的倾斜角A。其中，A＝90°-arccos(h/H)。如此当所述触控芯片30计算得到的两个坐标值精度越高，最终计算到的主动笔倾斜角越接近实际倾斜角，从而校正后呈现在触控屏20上的书写体验越真实。
请参阅图2所示，所述触控屏20包括，感应层21及驱动层22。在本实施方式中，所述感应层21包括多个感应通道210，所述感应通道 210的侧边设置有多个分支2100。所述驱动层22包括多个驱动通道220。所述感应通道210与所述驱动通道220交叉设置。
可以理解的是，所述感应通道210上设置的多个所述分支2100可以缩小通道之间盲区的尺寸，使得所述主动笔10在盲区位置触控时的感应变量相对现有技术变大，过渡更为连续，提高了触摸点坐标的计算精度，从而有效提高了所述主动笔10的倾斜角的识别精度。
在本实施方式中，所述感应通道210、所述分支2100及所述驱动通道220呈矩形。其中，多个所述感应通道210相互平行设置，多个所述驱动通道220相互平行设置，所述感应通道210与所述驱动通道220垂直交叉设置。优选地，多个所述分支2100的延伸方向垂直于所述感应通道210的延伸方向。
在本实施方式中，选取所述感应通道210的任意两个相邻通道为例，所述任意两个相邻通道为第一感应通道211及第二感应通道212。所述第一感应通道211与所述第二感应通道212绝缘。
在本实施方式中，所述第一感应通道211的两侧设置有多个第一分支2101，所述第二感应通道212的两侧设置有多个第二分支2102。所述第一分支2101及所述第二分支2102交替排列设置。
当所述主动笔10接触或靠近所述触控屏20时，所述触控屏20获取所述主动笔10的两个电极分别在所述触控屏20上产生的第一感应信号及第二感应信号，并根据所述第一感应信号及所述第二感应信号确定所述主动笔10的倾斜角。
在本实施方式中，所述主动笔10的两个电极为信号发射装置，所述触控屏20的感应通道210和驱动通道220均为信号接收装置。所述触控芯片30通过触控屏20的感应通道210和驱动通道220接收到所述主动笔10上位于笔尖101的第一电极102发出的信号(主动笔电极与触控屏电极的耦合电容)来识别主动笔笔尖的第一组X和Y坐标位置。所述触 控芯片30进一步通过触控屏20的感应通道210和驱动通道220接收到主动笔10上位于笔尖101的第一电极102上方的第二电极103发出的信号(主动笔电极与触控屏电极的耦合电容)来识别主动笔笔尖的第二组X和Y坐标位置。所述触控芯片30进一步通过两组坐标位置之间的距离及所述主动笔10上第一电极102与第二电极103之间的距离计算得到主动笔10的倾斜角度。
可以理解，所述第一分支2101及所述第二分支2102交替设置可以进一步缩小通道之间过渡区域的盲区的尺寸，使得主动笔触控时整屏的变化量都比较大，主动笔在触控屏不同位置的触摸精度和线性度大幅提升，并且触摸坐标计算精度大大提升，从而在不同位置识别到的主动笔倾斜角与实际的倾斜角误差非常小。
本实用新型提供的触控屏及具有所述触控屏的输入装置在感应通道上设置分支，可以减小触控屏的电极结构之间的盲区尺寸，增大主动笔电极与触控屏电极耦合产生的触控感应变化量，提高主动笔倾斜角的识别精度，从而提高主动笔的触控精度及线性度。
最后应说明的是，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等同替换，而不脱离本实用新型技术方案的精神和范围。

Claims (6)

  1. 一种触控屏，包括驱动层及感应层，其特征在于：所述驱动层包括多个驱动通道，所述感应层包括多个感应通道，所述感应通道与所述驱动通道交叉设置，所述感应通道的侧边设置有分支，相邻两个感应通道上的所述分支交替排列。
  2. 如权利要求1所述的触控屏，其特征在于：所述感应通道、所述分支及所述驱动通道呈矩形。
  3. 如权利要求2所述的触控屏，其特征在于：多个所述感应通道相互平行设置，多个所述驱动通道相互平行设置，所述感应通道与所述驱动通道垂直交叉设置。
  4. 如权利要求1所述的触控屏，其特征在于：多个所述分支的延伸方向垂直于所述感应通道的延伸方向。
  5. 一种输入装置，其特征在于：所述输入装置包括主动笔，还包括如权利要求1至4中任一项所述的触控屏及触控芯片。
  6. 如权利要求5所述的输入装置，其特征在于：所述主动笔内设置有两个电极，分别为设于笔尖区域的第一电极和设于所述第一电极上方的第二电极。
PCT/CN2021/082488 2020-08-26 2021-03-23 触控屏及具有所述触控屏的输入装置 WO2022041709A1 (zh)

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CN202021812934.2 2020-08-26
CN202021812934.2U CN212723965U (zh) 2020-08-26 2020-08-26 触控屏及具有所述触控屏的输入装置

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