WO2017107293A1 - 带触感反馈功能的触控显示装置及其驱动方法 - Google Patents

带触感反馈功能的触控显示装置及其驱动方法 Download PDF

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Publication number
WO2017107293A1
WO2017107293A1 PCT/CN2016/072848 CN2016072848W WO2017107293A1 WO 2017107293 A1 WO2017107293 A1 WO 2017107293A1 CN 2016072848 W CN2016072848 W CN 2016072848W WO 2017107293 A1 WO2017107293 A1 WO 2017107293A1
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Prior art keywords
signal lines
touch
substrate
tactile feedback
display device
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English (en)
French (fr)
Inventor
王超
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/023,693 priority Critical patent/US9916024B2/en
Publication of WO2017107293A1 publication Critical patent/WO2017107293A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/01—Indexing scheme relating to G06F3/01
    • G06F2203/014—Force feedback applied to GUI
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a touch display device with a tactile feedback function and a driving method thereof.
  • Liquid Crystal Display has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptop screens. Wait.
  • PDAs personal digital assistants
  • LCD Liquid Crystal Display
  • Touch Technology has become a technology development because of its convenient operation and high integration. Hot spot. Touch technology has developed rapidly in recent years, and a variety of touch technologies have been put into mass production.
  • the touch electrode can be divided into a liquid crystal cell (On Cell), the touch electrode is embedded in the liquid crystal cell (In Cell), And Out Cell.
  • Tactile control technology is a technology that can sense and operate through the touch on the surface of the display, enabling a better interactive experience.
  • the tactile sensation control technology utilizes the principle that the finger touches the different areas of the surface of the tactile sensation display device, and different electrostatic forces are generated in different regions on the surface of the tactile sensation display device, thereby obtaining different tactile sensations (such as bumps, vibrations, etc.). ).
  • FIG. 1 is a schematic diagram of a conventional touch display device with a tactile feedback function.
  • the touch display device with tactile feedback function respectively applies frequency in the longitudinal A region and the lateral B region.
  • the alternating voltage of f1 and f2 such that the finger acquires tactile perception at the C region where the intersection of the A region and the B region.
  • its tactile feedback function is currently unable to provide tactile feedback at any location and time.
  • An object of the present invention is to provide a touch display device with a tactile feedback function, which can provide tactile feedback to a finger at an arbitrary position touched by a finger, thereby realizing the pseudo-materialization of the display graphic. User experience.
  • Another object of the present invention is to provide a driving method of a touch display device with a tactile feedback function, which can realize positioning, display a picture, and provide tactile feedback to a finger at an arbitrary position touched by a finger, thereby realizing the pseudo-materialization of the display graphic. Improve the user experience.
  • the present invention firstly provides a display device with a tactile feedback function, comprising a first substrate, a second substrate disposed opposite to the first substrate, and located between the first substrate and the second substrate. a liquid crystal layer, a patterned conductive layer disposed on a side of the first substrate away from the liquid crystal layer, and an insulating layer covering the patterned conductive layer;
  • the patterned conductive layer includes: a plurality of first signal lines disposed in parallel with each other and extending in a lateral direction; and a plurality of second signal lines spaced apart from each other and extending in a longitudinal direction and insulated from the first signal line;
  • a side of the second substrate adjacent to the liquid crystal layer is provided with a plurality of third signal lines which are parallel to each other and disposed in the longitudinal direction;
  • the plurality of first signal lines and the plurality of third signal lines respectively serve as a touch driving electrode and a touch sensing electrode to form a touch unit, and the touch unit positions the position touched by the finger.
  • the first substrate is an array substrate
  • the second substrate is a color film substrate.
  • the plurality of third signal lines are common electrode lines.
  • the touch chip is further included, and the plurality of third signal lines are electrically connected to the touch chip.
  • the materials of the plurality of first signal lines and the plurality of second signal lines are indium tin oxide.
  • the plurality of second signal lines are grounded during touch scanning; and the third signal lines are electrically connected to the common voltage signal during tactile feedback.
  • the frequency of the alternating voltage applied to the first signal line and the second signal line is in the range of 100-5000 Hz, and the frequency of the alternating voltage applied to the first signal line is applied to the The frequency of the alternating voltage on the second signal line is not equal.
  • the plurality of first signal lines are intermittently disconnected by the plurality of second signal lines, and the disconnected first signal lines are electrically connected by a plurality of cross-bridge metal lines crossing the second signal lines.
  • the plurality of second signal lines are intermittently disconnected by the plurality of first signal lines, and the disconnected second signal lines are electrically connected by a plurality of cross-bridge metal lines crossing the first signal line.
  • the invention also provides a driving method of a touch display device with a tactile feedback function, comprising the following steps:
  • the touch display device with a tactile feedback function includes a first substrate, a second substrate disposed opposite to the first substrate, and the first substrate and a liquid crystal layer between the second substrate, a patterned conductive layer disposed on a side of the first substrate away from the liquid crystal layer, and an insulating layer covering the patterned conductive layer;
  • the patterned conductive layer includes: a plurality of first signal lines disposed in parallel with each other and extending in a lateral direction; and a plurality of second signal lines spaced apart from each other and extending in a longitudinal direction and insulated from the first signal line;
  • a side of the second substrate adjacent to the liquid crystal layer is provided with a plurality of third signal lines which are parallel to each other and disposed in the longitudinal direction;
  • Step 2 The plurality of first signal lines and the plurality of third signal lines are respectively used as a touch driving electrode and a touch sensing electrode to form a touch unit, and the touch unit is turned on, and the touch with a tactile feedback function Controlling the display device to enter the touch scanning phase;
  • Step 3 Touching a certain position on the surface of the touch display device with the touch feedback function, and positioning the position touched by the finger through the touch unit, and then closing the touch unit to complete the touch scan;
  • Step 4 Applying two different frequency AC voltages to the first signal line and the second signal line corresponding to the position touched by the finger positioned in step 3, respectively, and releasing the position touched by the finger by the difference frequency phenomenon Electrostatic force, complete tactile feedback.
  • the present invention also provides a touch display device with a tactile feedback function, including a first substrate, a second substrate disposed opposite the first substrate, a liquid crystal layer between the first substrate and the second substrate, a patterned conductive layer disposed on a side of the first substrate remote from the liquid crystal layer, and an insulating layer covering the patterned conductive layer;
  • the patterned conductive layer includes: a plurality of first signal lines disposed in parallel with each other and extending in a lateral direction; and a plurality of second signal lines spaced apart from each other and extending in a longitudinal direction and insulated from the first signal line;
  • a side of the second substrate adjacent to the liquid crystal layer is provided with a plurality of third signal lines which are parallel to each other and disposed in the longitudinal direction;
  • the plurality of first signal lines and the plurality of third signal lines respectively serve as a touch driving electrode and a touch sensing electrode to form a touch unit, and the touch unit positions the position touched by the finger.
  • the first substrate is an array substrate, and the second substrate is a color film substrate;
  • the plurality of third signal lines are common electrode lines
  • the touch chip is further included, and the plurality of third signal lines are electrically connected to the touch chip.
  • the touch display device with tactile feedback function of the present invention and the driving method thereof are disposed on the first substrate away from the liquid crystal layer on the first substrate of the touch display device with the tactile feedback function, including parallel intervals a plurality of first signal lines disposed in a lateral direction and a patterned conductive layer of the plurality of second signal lines spaced apart from each other and extending in the longitudinal direction and insulated from the first signal line, on the second substrate adjacent to the liquid crystal layer
  • the three signal lines respectively constitute a touch unit as a touch driving electrode and a touch sensing electrode, and the touch unit is used to locate the position touched by the finger, and the touch scanning is completed.
  • the touch feedback is performed, and the touch is performed.
  • the position of the touch corresponds to the first signal line and the second signal line respectively applying two alternating voltages of different frequencies, and the difference frequency phenomenon is released at the position touched by the finger.
  • FIG. 1 is a schematic diagram of a conventional touch display device with a tactile feedback function
  • FIG. 2 is a schematic cross-sectional view of a touch display device with a tactile feedback function according to the present invention
  • FIG. 3 is a top plan view showing layouts of first to third signal lines of the touch display device with tactile feedback function according to the present invention
  • FIG. 4 is a flow chart of a driving method of a touch display device with a tactile feedback function according to the present invention.
  • the present invention firstly provides a touch display device with a tactile feedback function, including a first substrate 10 and a second substrate 20 disposed opposite to the first substrate 10 . a liquid crystal layer 30 between a substrate 10 and a second substrate 20, a patterned conductive layer 50 disposed on a side of the first substrate 10 remote from the liquid crystal layer 30, and a patterning layer The insulating layer 40 of the conductive layer 50.
  • the patterned conductive layer 50 includes a plurality of first signal lines 1 spaced apart from each other and extending in the lateral direction, and a plurality of second signal lines 2 spaced apart from each other and extending in the longitudinal direction and insulated from the first signal line 1 .
  • the side of the second substrate 20 adjacent to the liquid crystal layer 30 is provided with a plurality of third signal lines 3 which are parallel to each other and disposed in the longitudinal direction.
  • the touch display device with the tactile feedback function performs touch scan and tactile feedback step by step.
  • the plurality of first signal lines 1 and the plurality of third signal lines 3 respectively serve as a touch driving electrode and a touch sensing electrode to form a touch unit, and are touched by the touch unit.
  • Position of the touch signal two alternating current voltages of different frequencies are respectively applied to the first signal line 1 and the second signal line 2 corresponding to the position touched by the finger, and are touched by the finger through the difference frequency phenomenon The area releases the electrostatic force for tactile feedback.
  • the touch display device with a tactile feedback function further includes a touch chip, and the plurality of third signal lines 3 are electrically connected to the touch chip, and the touch chip is used for touch scanning. Position the position touched by the finger.
  • the difference frequency phenomenon means that when the frequency of the alternating voltage applied on the first signal line 1 and the second signal line 2 is different, at the intersection of the first signal line 1 and the second signal line 2 (ie, cross The region to which the bridge metal line 4 is connected) may have a frequency difference equal to the difference between the alternating voltages applied to the first signal line 1 and the second signal line 2, the difference frequency causing a change in the lateral friction force, Tactile feedback can be achieved by allowing the finger to sense different frictional resistances in real time.
  • the first substrate 10 and the second substrate 20 are an array substrate and a color film substrate, respectively.
  • the thickness of the insulating layer 40 should be reduced as much as possible, and the capacitance formed after the finger is touched up can be increased.
  • the plurality of third signal lines 3 may be disposed on a surface of the second substrate 20 or may be shared with a common electrode line.
  • the materials of the plurality of first signal lines 1 and the plurality of second signal lines 2 are transparent indium tin oxide (ITO).
  • the plurality of second signal lines 2 are grounded to improve the sensitivity of the touch.
  • the plurality of third signal lines 3 are electrically connected to the common voltage signal to avoid affecting the result of the tactile feedback while realizing the normal display picture.
  • the frequency of the alternating voltage applied to the first signal line 1 and the second signal line 2 is in the range of 100-5000 Hz, and the alternating voltage applied to the first signal line 1 The frequency is not equal to the frequency of the alternating voltage applied to the second signal line 2.
  • FIG. 3 because there is a horizontal first signal line 1 simultaneously in the conductive layer 50.
  • the second signal line 2 in the longitudinal direction, in order to insulate the first signal line 1 from the second signal line 2, the plurality of second signal lines 2 are disposed to be disconnected and disconnected by the plurality of first signal lines 1
  • the second signal line 2 is electrically connected by a plurality of bridge wires across the first signal line 1.
  • the plurality of first signal lines 1 may be spaced apart by the plurality of second signal lines 2, and the disconnected first signal lines 1 pass through the plurality of bridge wires across the second signal line 2. Electrical connection.
  • This connection method can effectively increase the contact area of the first and second signal lines 1, 2 at the position touched by the finger, and improve the touch sensitivity of the finger.
  • the touch display device with tactile feedback function combines the circuit of the touch unit itself, has a simple structure and high sensitivity, and the alternating voltage of different frequencies causes a change in the lateral friction force, and the finger can be perceived in the position touched in real time. Different frictional resistances enable tactile feedback to enhance the user experience.
  • the present invention further provides a driving method of a touch display device with a tactile feedback function, including the following steps. :
  • the touch display device with a tactile feedback function includes a first substrate 10, a second substrate 20 disposed opposite the first substrate 10, and a liquid crystal layer 30 between the first substrate 10 and the second substrate 20, a patterned conductive layer 50 disposed on a side of the first substrate 10 remote from the liquid crystal layer 30, and a patterned conductive layer 50 The insulating layer 40.
  • the patterned conductive layer 50 includes a plurality of first signal lines 1 spaced apart from each other and extending in the lateral direction, and a plurality of second signal lines 2 spaced apart from each other and extending in the longitudinal direction and insulated from the first metal lines 1 .
  • the side of the second substrate 20 adjacent to the liquid crystal layer 30 is provided with a plurality of third signal lines 3 which are parallel to each other and disposed in the longitudinal direction.
  • Step 2 The plurality of first signal lines 1 and the plurality of third signal lines 3 are respectively used as a touch driving electrode and a touch sensing electrode to form a touch unit, and the touch unit is turned on, and the touch sensing function is provided.
  • the touch display device enters the touch scanning stage.
  • step 2 the plurality of second signal lines 2 are grounded to improve the sensitivity of the touch.
  • Step 3 Touching a certain position on the surface of the touch display device with the touch feedback function, and positioning the position touched by the finger through the touch unit, and then closing the touch unit to complete the touch scan;
  • Step 4 Applying two alternating voltages of different frequencies on the first signal line 1 and the second signal line 2 corresponding to the position touched by the finger positioned in step 3, respectively, through the difference frequency phenomenon, The position touched by the finger releases the electrostatic force to complete the tactile feedback.
  • the plurality of third signal lines 3 are electrically connected to the common voltage signal to avoid affecting the result of the tactile feedback.
  • the number is set in order to insulate the first signal line 1 from the second signal line 2.
  • the strip second signal line 2 is intermittently disconnected by the plurality of first signal lines 1, and the disconnected second signal line 2 is electrically connected by a plurality of cross-bridge metal lines crossing the first signal line 1.
  • the plurality of first signal lines 1 may be spaced apart by the plurality of second signal lines 2, and the disconnected first signal lines 1 pass through the plurality of bridge wires across the second signal line 2. Electrical connection. This connection method can effectively increase the contact area of the first and second signal lines 1, 2 at the position touched by the finger, and improve the touch sensitivity of the finger.
  • the driving method of the touch display device with the tactile feedback function can realize positioning, display a picture, and provide tactile feedback to the finger at any position touched by the finger, thereby realizing the materialization of the display graphic and improving the user experience.
  • the touch display device with tactile feedback function of the present invention and the driving method thereof are disposed on the first substrate away from the liquid crystal layer on the first substrate of the touch display device with the tactile feedback function, and are arranged in parallel with each other. And a plurality of first signal lines extending in a lateral direction and a patterned conductive layer of the plurality of second signal lines spaced apart from each other and extending in the longitudinal direction and insulated from the first signal line, on the second substrate adjacent to the liquid crystal layer
  • One side of the third signal line disposed parallel to each other and disposed along the longitudinal direction; during operation, the touch scan and the tactile feedback are performed step by step, and in the touch scan, the first signal line and the third number are used
  • the signal line is used as a touch driving electrode and a touch sensing electrode to form a touch unit, and the touch unit is used to locate the position touched by the finger, and the touch scan is completed.
  • the touch feedback is performed, and the touch is touched with the finger.
  • the position corresponds to the first signal line and the second signal line respectively applying two alternating voltages of different frequencies, and by the difference frequency phenomenon, the electrostatic force is released at the position touched by the finger, Into a tactile feedback, the design bonded to each other by touch and feel and touch to achieve a touch interactive experience, and can provide tactile feedback to a finger at an arbitrary position touched by the finger, significantly enhance the user experience.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种带触感反馈功能的触控显示装置及其驱动方法。该装置包括第一基板（10）、第二基板（20）、液晶层（30）、图案化的导电层（50）以及绝缘层（40）；所述图案化的导电层（50）包括：相互平行间隔设置且沿横向延伸的数条第一信号线（1）和相互平行间隔设置且沿纵向延伸的与第一信号线（1）绝缘的数条第二信号线（2）；所述第二基板（20）上靠近液晶层（30）的一侧设有相互平行且沿纵向设置的数条第三信号线（3）；通过第一信号线（1）和第三信号线（3）实现触控扫描，通过第一信号线（1）和第二信号线（2）实现触感反馈。

Description

带触感反馈功能的触控显示装置及其驱动方法 技术领域
本发明涉及显示技术领域，尤其涉及一种带触感反馈功能的触控显示装置及其驱动方法。
背景技术
液晶显示器(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如：移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等。
随着液晶显示器技术的发展进步，人们对液晶显示器的显示品质、外观设计、人机界面等提出了更高的要求，触控技术(Touch Technology)因具有操作方便，高度集成等特点成为技术发展的热点。触控技术近些年发展迅猛，目前已有多种触控技术投入量产。现有触摸屏技术中,根据触控传感器(Touch sensor)位置的不同，可分为触控电极覆盖于液晶盒上式(On Cell)、触控电极内嵌在液晶盒内式(In Cell)、以及外挂式(Out Cell)。
随着平板显示技术和触控技术的发展，人与显示器的交互方式也在不断增加。触感控制技术是一种可通过在显示器表面的触觉来进行感知和操作的技术，可以实现较佳的交互体验。触感控制技术利用了手指在触感控制显示装置表面的不同区域触摸滑动时，在触感控制显示装置表面的不同区域会产生不同的静电力的原理，从而获得不同的触觉感知(如凸起、震动等)。
现有的触感控制技术能够实现在触感控制显示装置的表面设定区域实现触感显示，通过预先设计的程序使显示画面中某些区域获得的触感与其他区域不同。请参阅图1，为一种现有的带触感反馈功能的触控显示装置的原理图，该带触感反馈功能的触控显示装置通过在纵向的A区域、及横向的B区域分别施加频率为f1与f2的交流电压，从而使得手指在A区域与B区域的相交处的C区域获得触觉感知。然而，其触感反馈功能目前还无法实现在任意位置与时刻提供触感反馈。
发明内容
本发明的目的在于提供一种带触感反馈功能的触控显示装置，能够在手指所触摸的任意位置向手指提供触觉反馈，实现显示图形的拟物化，提 升用户体验。
本发明的目的还在于提供一种带触感反馈功能的触控显示装置的驱动方法，能够在手指所触摸的任意位置实现定位、显示画面、及向手指提供触觉反馈，实现显示图形的拟物化，提升用户体验。
为实现上述目的，本发明首先提供一种带触感反馈功能的显示装置，包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、设于所述第一基板上远离液晶层的一侧的图案化的导电层、以及覆盖所述图案化的导电层的绝缘层；
所述图案化的导电层包括：相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线；
所述第二基板上靠近液晶层的一侧设有相互平行且沿纵向设置的数条第三信号线；
在触控扫描时，所述数条第一信号线和数条第三信号线分别作为触控驱动电极与触控感应电极以构成触控单元，所述触控单元定位手指所触摸的位置，实现触控功能；
在触感反馈时，在与所述手指所触摸的位置对应的第一信号线和第二信号线上分别施加两种不同频率的交流电压，通过差频现象，在手指所触摸的位置释放静电力，实现触感反馈。
所述第一基板为阵列基板，第二基板为彩膜基板。
所述数条第三信号线为公共电极线。
还包括触控芯片，所述数条第三信号线与所述触控芯片电性连接。
所述数条第一信号线和数条第二信号线的材料均为氧化铟锡。
在触控扫描时，所述数条第二信号线接地；在触感反馈时，所述第三信号线电性连接于公共电压信号。
在触感反馈时，施加于所述第一信号线和第二信号线上的交流电压的频率范围均为100-5000HZ，且施加于所述第一信号线上的交流电压频率与施加于所述第二信号线上的交流电压频率不相等。
所述数条第一信号线被所述数条第二信号线间隔断开，断开的第一信号线通过跨越第二信号线的数条跨桥金属线电性连接。
所述数条第二信号线被所述数条第一信号线间隔断开，断开的第二信号线通过跨越第一信号线的数条跨桥金属线电性连接。
本发明还提供一种带触感反馈功能的触控显示装置的驱动方法，包括如下步骤：
步骤1、提供带触感反馈功能的触控显示装置，所述带触感反馈功能的触控显示装置包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、设于所述第一基板上远离液晶层的一侧的图案化的导电层、以及覆盖所述图案化的导电层的绝缘层；
所述图案化的导电层包括：相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线；
所述第二基板上靠近液晶层的一侧设有相互平行且沿纵向设置的数条第三信号线；
步骤2、将所述数条第一信号线、数条第三信号线分别作为触控驱动电极与触控感应电极以构成触控单元，开启该触控单元，所述带触感反馈功能的触控显示装置进入触控扫描阶段；
步骤3、用手指触摸所述带触感反馈功能的触控显示装置表面的某个位置，并通过所述触控单元定位手指所触摸的位置，之后关闭所述触控单元，完成触控扫描；
步骤4、在与步骤3中所定位的手指所触摸的位置相对应的第一信号线和第二信号线分别施加两种不同频率的交流电压，通过差频现象，在手指所触摸的位置释放静电力，完成触感反馈。
本发明还提供一种带触感反馈功能的触控显示装置，包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、设于所述第一基板上远离液晶层的一侧的图案化的导电层、以及覆盖所述图案化的导电层的绝缘层；
所述图案化的导电层包括：相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线；
所述第二基板上靠近液晶层的一侧设有相互平行且沿纵向设置的数条第三信号线；
在触控扫描时，所述数条第一信号线和数条第三信号线分别作为触控驱动电极与触控感应电极以构成触控单元，所述触控单元定位手指所触摸的位置，实现触控功能；
在触感反馈时，在与所述手指所触摸的位置对应的第一信号线和第二信号线上分别施加两种不同频率的交流电压，通过差频现象，在手指触摸的位置释放静电力，实现触感反馈；
其中，所述第一基板为阵列基板，所述第二基板为彩膜基板；
其中，所述数条第三信号线为公共电极线；
还包括触控芯片，所述数条第三信号线与所述触控芯片电性连接。
本发明的有益效果：本发明的带触感反馈功能的触控显示装置及其驱动方法，通过在带触感反馈功能的触控显示装置的第一基板上远离液晶层的一侧设置包括相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线的图案化的导电层，在第二基板上靠近液晶层的一侧设置相互平行且沿纵向设置的数条第三信号线；工作时，触控扫描与触感反馈分步进行，在触控扫描时，利用所述数条第一信号线和数条第三信号线分别作为触控驱动电极与触控感应电极构成触控单元，并通过该触控单元定位手指所触摸的位置，完成触控扫描，触控扫描完成后进行触感反馈，对与手指所触摸的位置相对应第一信号线和第二信号线分别施加两种不同频率的交流电压，通过差频现象，在手指所触摸的位置释放静电力，完成触感反馈，通过触控和触感的相互结合的设计，实现了触控到触感的交互体验，且能够在手指所触摸的任意位置向手指提供触觉反馈，显著提升了用户体验。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为一种现有的带触感反馈功能的触控显示装置的原理图；
图2为本发明的带触感反馈功能的触控显示装置的剖面示意图；
图3为本发明的带触感反馈功能的触控显示装置的第一至第三信号线的布局俯视图；
图4为本发明的带触感反馈功能的触控显示装置的驱动方法的流程图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请同时参阅图2与图3，本发明首先提供一种带触感反馈功能的触控显示装置，包括第一基板10、与所述第一基板10相对设置的第二基板20、位于所述第一基板10与第二基板20之间的液晶层30、设于所述第一基板10上远离液晶层30的一侧的图案化的导电层50、以及覆盖所述图案化的 导电层50的绝缘层40。
所述图案化的导电层50包括相互平行间隔设置且沿横向延伸的数条第一信号线1和相互平行间隔设置且沿纵向延伸的与第一信号线1绝缘的数条第二信号线2。
所述第二基板20上靠近液晶层30的一侧设有相互平行且沿纵向设置的数条第三信号线3。
具体地，所述带触感反馈功能的触控显示装置分步进行触控扫描与触感反馈。在触控扫描时，所述数条第一信号线1和数条第三信号线3分别作为触控驱动电极与触控感应电极以构成触控单元，并通过该触控单元定位手指所触摸的位置；在触感反馈时，在与所述手指所触摸的位置对应的第一信号线1和第二信号线2上分别施加两种不同频率的交流电压，通过差频现象，在手指所触摸的区域释放静电力，实现触感反馈。
进一步地，所述带触感反馈功能的触控显示装置还包括触控芯片，所述数条第三信号线3与所述触控芯片电性连接，该触控芯片用于在触控扫描时对手指所触摸的位置进行定位。所述差频现象是指，当所述第一信号线1和第二信号线2上施加的交流电压频率不同时，在第一信号线1与第二信号线2的交叉点处(即跨桥金属线4所连接的区域)会出现频率等于施加在所述第一信号线1和第二信号线2上的交流电压的差值的差频，该差频会造成横向摩擦力的变化，能够实时使手指感知到不同的摩擦阻力，即可实现触感反馈。
具体地，所述第一基板10与第二基板20分别为阵列基板与彩膜基板。
具体地，为了提高触感灵敏度，应尽可能的减小绝缘层40的厚度，提高手指触摸上去后形成的电容。
具体地，所述数条第三信号线3可以设于所述第二基板20的表面，也可以与公共电极线共用。
具体地，所述数条第一信号线1和数条第二信号线2的材料均为透明的氧化铟锡(Indium Tin Oxide，ITO)。
具体地，在触控扫描时，所述数条第二信号线2接地，以提高触控的灵敏度。在触感反馈时，所述数条第三信号线3电性连接于公共电压信号，在实现正常显示画面的同时避免对触感反馈的结果造成影响。
具体地，在触感反馈时，施加于所述第一信号线1和第二信号线2上的交流电压的频率范围均为100-5000HZ，且施加于所述第一信号线1上的交流电压频率与施加于所述第二信号线2上的交流电压频率不相等。
特别的，请参阅图3，由于在导电层50同时存在横向的第一信号线1 与纵向的第二信号线2，为使第一信号线1与第二信号线2绝缘，设置所述数条第二信号线2被所述数条第一信号线1间隔断开，断开的第二信号线2通过跨越第一信号线1的数条跨桥金属线电性4连接。当然，也可以设置所述数条第一信号线1被所述数条第二信号线2间隔断开，断开的第一信号线1通过跨越第二信号线2的数条跨桥金属线电性连接。这种连接方法可以有效提升第一和第二信号线1、2在手指所触摸的位置的接触面积，提高手指的触感灵敏度。
上述带触感反馈功能的触控显示装置结合了触控单元自身的电路，结构简单，灵敏度高，利用不同频率交流电压会造成横向摩擦力的变化，能够实时使手指在其所触摸的位置感知到不同的摩擦阻力，实现触感反馈功能，提升用户体验。
请参阅图4，同时结合图2至图3，在上述带触感反馈功能的触控显示装置的基础上，本发明还提供一种带触感反馈功能的触控显示装置的驱动方法，包括如下步骤：
步骤1、提供带触感反馈功能的触控显示装置，所述带触感反馈功能的触控显示装置包括第一基板10、与所述第一基板10相对设置的第二基板20、及位于所述第一基板10与第二基板20之间的液晶层30、设于所述第一基板10上远离液晶层30的一侧的图案化的导电层50、以及覆盖所述图案化的导电层50的绝缘层40。
所述图案化的导电层50包括相互平行间隔设置且沿横向延伸的数条第一信号线1和相互平行间隔设置且沿纵向延伸的与第一金属线1绝缘的数条第二信号线2。
所述第二基板20上靠近液晶层30的一侧设有相互平行且沿纵向设置的数条第三信号线3。
步骤2、将所述数条第一信号线1、数条第三信号线3分别作为触控驱动电极与触控感应电极以构成触控单元，开启触控单元，所述带触感反馈功能的触控显示装置进入触控扫描阶段。
在该步骤2的进行过程中，所述数条第二信号线2接地，以提高触控的灵敏度。
步骤3、用手指触摸所述带触感反馈功能的触控显示装置表面的某个位置，并通过所述触控单元定位手指所触摸的位置，之后关闭所述触控单元，完成触控扫描；
步骤4、在与步骤3中所定位的手指所触摸的位置相对应的第一信号线1和第二信号线2上分别施加两种不同频率的交流电压，通过差频现象，在 手指所触摸的位置释放静电力，完成触感反馈。
在该步骤4中，所述数条第三信号线3电性连接于公共电压信号，避免对触感反馈的结果造成影响。
特别的，请参阅图3，由于在导电层50同时存在横向的第一信号线1与纵向的第二信号线2，为使第一信号线1与第二信号线2绝缘，设置所述数条第二信号线2被所述数条第一信号线1间隔断开，断开的第二信号线2通过跨越第一信号线1的数条跨桥金属线电性4连接。当然，也可以设置所述数条第一信号线1被所述数条第二信号线2间隔断开，断开的第一信号线1通过跨越第二信号线2的数条跨桥金属线电性连接。这种连接方法可以有效提升第一和第二信号线1、2在手指所触摸的位置的接触面积，提高手指的触感灵敏度。
上述带触感反馈功能的触控显示装置的驱动方法，能够在手指所触摸的任意位置实现定位、显示画面、及向手指提供触觉反馈，实现显示图形的拟物化，提升用户体验。
综上所述，本发明的带触感反馈功能的触控显示装置及其驱动方法，通过在带触感反馈功能的触控显示装置的第一基板上远离液晶层的一侧设置包括相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线的图案化的导电层，在第二基板上靠近液晶层的一侧设置相互平行且沿纵向设置的数条第三信号线；工作时，触控扫描与触感反馈分步进行，在触控扫描时，利用所述数条第一信号线和数条第三信号线分别作为触控驱动电极与触控感应电极构成触控单元，并通过该触控单元定位手指所触摸的位置，完成触控扫描，触控扫描完成后进行触感反馈，对与手指所触摸的位置相对应第一信号线和第二信号线分别施加两种不同频率的交流电压，通过差频现象，在手指所触摸的位置释放静电力，完成触感反馈，通过触控和触感的相互结合的设计，实现了触控到触感的交互体验，且能够在手指所触摸的任意位置向手指提供触觉反馈，显著提升了用户体验。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (16)

  1. 一种带触感反馈功能的触控显示装置，包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、设于所述第一基板上远离液晶层的一侧的图案化的导电层、以及覆盖所述图案化的导电层的绝缘层；
    所述图案化的导电层包括：相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线；
    所述第二基板上靠近液晶层的一侧设有相互平行且沿纵向设置的数条第三信号线；
    在触控扫描时，所述数条第一信号线和数条第三信号线分别作为触控驱动电极与触控感应电极以构成触控单元，所述触控单元定位手指所触摸的位置，实现触控功能；
    在触感反馈时，在与所述手指所触摸的位置对应的第一信号线和第二信号线上分别施加两种不同频率的交流电压，通过差频现象，在手指触摸的位置释放静电力，实现触感反馈。
  2. 如权利要求1所述的带触感反馈功能的触控显示装置，其中，所述第一基板为阵列基板，所述第二基板为彩膜基板。
  3. 如权利要求1所述的带触感反馈功能的触控显示装置，其中，所述数条第三信号线为公共电极线。
  4. 如权利要求1所述的带触感反馈功能的触控显示装置，还包括触控芯片，所述数条第三信号线与所述触控芯片电性连接。
  5. 如权利要求1所述的带触感反馈功能的触控显示装置，其中，所述数条第一信号线和数条第二信号线的材料均为氧化铟锡。
  6. 如权利要求1所述的带触感反馈功能的触控显示装置，其中，在触控扫描时，所述数条第二信号线接地；在触感反馈时，所述第三信号线电性连接于公共电压信号。
  7. 如权利要求1所述的带触感反馈功能的触控显示装置，其中，在触感反馈时，施加于所述第一信号线和第二信号线上的交流电压的频率范围均为100-5000HZ，且施加于所述第一信号线上的交流电压频率与施加于所述第二信号线上的交流电压频率不相等。
  8. 如权利要求1所述的带触感反馈功能的触控显示装置，其中，所述 数条第一信号线被所述数条第二信号线间隔断开，断开的第一信号线通过跨越第二信号线的数条跨桥金属线电性连接。
  9. 如权利要求1所述的带触感反馈功能的触控显示装置，其中，所述数条第二信号线被所述数条第一信号线间隔断开，断开的第二信号线通过跨越第一信号线的数条跨桥金属线电性连接。
  10. 一种带触感反馈功能的触控显示装置的驱动方法，包括如下步骤：
    步骤1、提供带触感反馈功能的触控显示装置，所述带触感反馈功能的触控显示装置包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、设于所述第一基板上远离液晶层的一侧的图案化的导电层、以及覆盖所述图案化的导电层的绝缘层；
    所述图案化的导电层包括相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线；
    所述第二基板上靠近液晶层的一侧设有相互平行且沿纵向设置的数条第三信号线；
    步骤2、将所述数条第一信号线、数条第三信号线分别作为触控驱动电极与触控感应电极以构成触控单元，开启该触控单元，所述带触感反馈功能的触控显示装置进入触控扫描阶段；
    步骤3、利用手指触摸所述带触感反馈功能的触控显示装置表面的某个位置，并通过所述触控单元定位手指所触摸的位置，之后关闭所述触控单元，完成触控扫描；
    步骤4、在与步骤3中所定位的手指所触摸的位置相对应的第一信号线和第二信号线上分别施加两种不同频率的交流电压，通过差频现象，在手指所触摸的位置释放静电力，完成触感反馈。
  11. 一种带触感反馈功能的触控显示装置，包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、设于所述第一基板上远离液晶层的一侧的图案化的导电层、以及覆盖所述图案化的导电层的绝缘层；
    所述图案化的导电层包括：相互平行间隔设置且沿横向延伸的数条第一信号线和相互平行间隔设置且沿纵向延伸的与第一信号线绝缘的数条第二信号线；
    所述第二基板上靠近液晶层的一侧设有相互平行且沿纵向设置的数条第三信号线；
    在触控扫描时，所述数条第一信号线和数条第三信号线分别作为触控 驱动电极与触控感应电极以构成触控单元，所述触控单元定位手指所触摸的位置，实现触控功能；
    在触感反馈时，在与所述手指所触摸的位置对应的第一信号线和第二信号线上分别施加两种不同频率的交流电压，通过差频现象，在手指触摸的位置释放静电力，实现触感反馈；
    其中，所述第一基板为阵列基板，所述第二基板为彩膜基板；
    其中，所述数条第三信号线为公共电极线；
    还包括触控芯片，所述数条第三信号线与所述触控芯片电性连接。
  12. 如权利要求11所述的带触感反馈功能的触控显示装置，其中，所述数条第一信号线和数条第二信号线的材料均为氧化铟锡。
  13. 如权利要求11所述的带触感反馈功能的触控显示装置，其中，在触控扫描时，所述数条第二信号线接地；在触感反馈时，所述第三信号线电性连接于公共电压信号。
  14. 如权利要求11所述的带触感反馈功能的触控显示装置，其中，在触感反馈时，施加于所述第一信号线和第二信号线上的交流电压的频率范围均为100-5000HZ，且施加于所述第一信号线上的交流电压频率与施加于所述第二信号线上的交流电压频率不相等。
  15. 如权利要求11所述的带触感反馈功能的触控显示装置，其中，所述数条第一信号线被所述数条第二信号线间隔断开，断开的第一信号线通过跨越第二信号线的数条跨桥金属线电性连接。
  16. 如权利要求11所述的带触感反馈功能的触控显示装置，其中，所述数条第二信号线被所述数条第一信号线间隔断开，断开的第二信号线通过跨越第一信号线的数条跨桥金属线电性连接。
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