WO2015096306A1 - 一种触控电路、触控基板及触控显示装置 - Google Patents

一种触控电路、触控基板及触控显示装置 Download PDF

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Publication number
WO2015096306A1
WO2015096306A1 PCT/CN2014/075500 CN2014075500W WO2015096306A1 WO 2015096306 A1 WO2015096306 A1 WO 2015096306A1 CN 2014075500 W CN2014075500 W CN 2014075500W WO 2015096306 A1 WO2015096306 A1 WO 2015096306A1
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Prior art keywords
touch
sensing signal
line
light
signal
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PCT/CN2014/075500
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English (en)
French (fr)
Inventor
陈硕
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京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/416,253 priority Critical patent/US9740335B2/en
Publication of WO2015096306A1 publication Critical patent/WO2015096306A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display

Definitions

  • the present invention relates to the field of display technology
  • the touch sensing is designed in the in-cell touch panel, the thickness of the touch panel can be reduced while reducing the touch screen, thereby becoming the development direction of the touch technology.
  • the in-cell touch device is a contact-touch design solution, in which the surface of the display panel is touched by a finger or a stylus, causing a change in the induced current (voltage), thereby based on the sensing.
  • the change in current identifies the area of the panel that is being touched.
  • the contact touch method requires contact with the touch panel to realize touch sensing, and the non-contact touch sensing cannot be realized. Therefore, it is inconvenient for the ffi household to use the touch display device at a long distance.
  • the invention provides a touch control circuit, a touch substrate and a touch display device, and can realize a long-distance non-contact touch function.
  • the invention provides the following solutions:
  • the embodiment of the invention provides a touch circuit, including:
  • the light sensing module is configured to correspond to a touch area, and is configured to use the first signal transmitted by the signal input line as the sensing signal when the touch area is illuminated by the light that meets the first preset condition, respectively Transmitting the sensing signal transmission line and the second sensing signal transmission line to a processor, the processor transmitting the first based on the first sensing signal transmission line
  • the sensing signal and the second sensing signal transmitted by the second sensing signal transmission line determine location information of the touch area.
  • the illumination sensing module includes:
  • the light control unit is respectively connected to the signal input line, the first transmission switch, and the first sensing signal transmission line, and is configured to change from an off state to an on state when illuminated by the light, when the light control unit is turned on a state, the first signal transmitted by the signal input line is transmitted to the first transmission switch and the first sensing signal transmission line via the optical control unit;
  • the first transmission switch is respectively connected to the signal input line, the light control unit, and the second transmission switch, and is configured to transmit the first signal to the second transmission switch under the control of the first signal;
  • a second transfer switch is respectively connected to the first transfer switch, the first gate line, and the second sensing signal transmission line, and ffi is controlled by the second signal transmitted by the first gate line, and the first transmission switch is The transmitted first signal is transmitted to the second inductive signal transmission line.
  • the light control unit includes:
  • the first transfer switch includes :
  • a source of the first thin film transistor is connected to the signal input line, a gate of the first thin film transistor is connected to the node, a drain of the first thin film transistor and the first Two transmission switches are connected.
  • the second transmission switch includes:
  • a source of the second thin film transistor is connected to the first transfer switch, a gate of the second thin film transistor is connected to the first gate line, and a drain of the second thin film transistor Connected to the second inductive signal transmission line.
  • the signal input line and the first sensing signal transmission line are disposed in parallel with the first gate line;
  • the second sensing signal transmission line is disposed in parallel with the data line included in the touch area.
  • the first sensing signal is used to determine row coordinates of the touch area; and the second sensing signal is used to determine column coordinates of the touch area.
  • the first preset condition is determined based on the illumination intensity, wavelength, and type of the light.
  • the light is a laser.
  • the light is infrared or ultraviolet light.
  • the touch circuit further includes a pixel region, a thin film transistor, and a capacitor.
  • the embodiment of the present invention further provides a touch control substrate, which may include the touch control circuit provided by the embodiment of the present invention.
  • the touch substrate is an array substrate.
  • the touch substrate does not have a black matrix disposed above the light control unit.
  • the embodiment of the present invention further provides a touch display device, and the touch display device may include the touch substrate provided by the embodiment of the present invention.
  • the touch circuit, the touch substrate and the touch display device of the present invention comprise: a touch sensing module corresponding to a touch area, and the touch area
  • the first signal transmitted by the signal input line is used as an sensing signal, and is transmitted to a processor through the first sensing signal transmission line and the second sensing signal transmission line, respectively, the processor is based on The first sensing signal transmitted by the first sensing signal transmission line and the second sensing signal transmitted by the second sensing signal transmission line determine location information of the touch area. Therefore, the long-distance non-contact touch function can be realized, which is convenient for the user to use the touch display device.
  • FIG. 1 is a schematic structural diagram of a touch circuit according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a touch circuit according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram 3 of a touch circuit according to an embodiment of the present invention.
  • the embodiment of the invention provides a touch circuit.
  • the touch circuit may specifically include:
  • the illumination sensing module 1 corresponding to a touch area is configured to: when the touch area is illuminated by the light that meets the first preset condition, the first signal transmitted by the signal input line is used as the sensing signal, respectively
  • An inductive signal transmission line IOX and a second inductive signal transmission line IC are transmitted to a processor, and the processor (MCU: Micro Controller Unit) is based on the first sensing signal and the second sensing transmitted by the first sensing signal transmission line
  • the second sensing signal transmitted by the signal transmission line determines location information of the touch area.
  • the touch control circuit provided by the embodiment of the invention can realize the non-contact touch function, thereby facilitating the remote control of the touch display device by the user.
  • the remote non-contact touch function implemented by the embodiment of the present invention can be implemented based on a light that is sent by a handheld or fixed light source and meets a first preset condition, that is, a light is used to replace the user's hand or the stylus. Achieve remote touch operation on the panel.
  • the first preset condition involved in the embodiment of the present invention may be determined based on the illumination intensity, wavelength, and type of the light to avoid interference of the ambient light or the like on the non-contact touch operation.
  • the light source according to the embodiment of the present invention may be a laser, and the light source may be a device such as a laser pointer.
  • the light involved in the embodiment of the present invention may also be infrared rays, ultraviolet rays, or the like.
  • the device may further include a pixel region, a thin film transistor T3, a capacitor C1, and other pixel regions.
  • the illumination sensing module 1 may specifically include:
  • the light control unit 10 is in the on state, the first signal transmitted by the signal input line is transmitted to the first transmission switch 11 via the light control unit 10 and the first Inductive signal transmission line IC-X;
  • the first transmission switch 11 is connected to the signal input line, the light control unit 10, and the second transmission switch 12, for transmitting the first signal to the second transmission switch 12 under the control of the first signal;
  • the second transfer switch 12 is respectively connected to the first transfer switch 11, the first gate line (gate line ⁇ ), the second sense signal transmission line ,, and the second signal (ie, the gate drive signal) transmitted at the first cabinet line Under control, the first signal transmitted by the first transmission switch 11 is transmitted to the second sensing signal transmission line ⁇ .
  • the signal input line and the first sensing signal transmission line ⁇ may be disposed in parallel with the first cabinet line (gate line ,), but the first aspect involved in the embodiment of the present invention
  • the gate line may be the » line to which the pixel row of the touch circuit belongs, or the gate line to which the other pixel row belongs.
  • the second sensing signal transmission line IC ⁇ may be disposed in parallel with the data lines included in the touch area.
  • the signal input line, the first sensing signal transmission line, and the second sensing signal transmission line are not connected to each other, and the setting of the three signal lines cannot affect the illumination of the pixel area in the touch circuit and cannot affect the light to the illumination. Irradiation of the sensing module 1.
  • the signal input line and the first sensing signal transmission line according to the embodiment of the present invention may be disposed in the same layer as the first gate line, and the second sensing signal transmission line according to the embodiment of the present invention may be associated with the data.
  • the line is set in the same layer.
  • the first signal transmitted by the signal input line may be a signal having a fixed voltage (for example, 10 V).
  • the first sensing signal is transmitted to the processor at the back end through the first sensing signal transmission line, and the processor determines the row coordinate of the touch area illuminated by the light based on the identifier of the first sensing signal transmission line carried in the first sensing signal; when the first signal When the first transmission switch 11 and the second transmission switch 12 are transmitted to the second sensing signal transmission line 10Y, they are transmitted as a second sensing signal to the processor at the back end through the second sensing signal transmission line, and the processor carries the second sensing signal based on the second sensing signal.
  • the identifier of the second sensing signal transmission line determines the column coordinates of the touch area illuminated by the light, and then, based on the determined row coordinates and column coordinates, the position information of the touch area illuminated by the light can be determined, thereby determining that the light is illuminated Position information of the pixel area, which can be subsequently determined based on actual needs Control region, such as the drive control of the light emission region of the pixel.
  • the optical control unit 10 may specifically include:
  • the photodiode D1 the cathode of the photodiode D1 is connected to the first transfer switch 11, the first sensing signal transmission line IOX to the node A, and the anode of the photodiode D1 is connected to the signal input line.
  • the photodiode D1 according to the embodiment of the present invention can be turned from the off state to the on state when illuminated by a strong light such as a laser. Therefore, the function of the light control unit 1 according to the embodiment of the present invention can be realized.
  • the first signal transmitted by the signal input line can be transmitted to the first transfer switch 11 and the first sense signal transmission line through the photodiode D1.
  • the first transmission switch 11 according to the embodiment of the present invention may include:
  • the first thin film transistor T1 the source of the first thin film transistor T1 is connected to the signal input line, the gate of the first thin film transistor T1 is connected to the node A, and the drain and the second of the first thin film transistor The transfer switch T2 is connected.
  • the on or off state of the first thin film transistor ⁇ can be determined by the potential of the node A, and then, when the photodiode D1 is illuminated by strong light, it is in an on state.
  • the potential of the node A is charged to a high potential by the first signal transmitted by the signal input line, thereby causing the first thin film transistor T1 to be in an on state.
  • the first signal transmitted from the signal input line to which the source of the first thin film transistor T1 is connected is transmitted to the second thin film transistor T2 through the first thin film transistor T1.
  • the second transmission switch 12 may include:
  • the second thin film transistor T2 the source of the second thin film transistor T2 and the first transfer switch
  • the T1 (drain) connection, the gate of the second thin film transistor T2 is connected to the first gate line (gate line N), and the drain of the second thin film transistor T2 is connected to the second sensing signal transmission line (IOY).
  • the gate driving signal transmitted by the first gate line in the on state is a high level signal
  • the second thin film transistor T2 is in an on state.
  • the first signal transmitted by the input line is transmitted to the second sensing signal transmission line via the first thin film transistor T1 and the second thin film transistor T2.
  • the touch control circuit provided by the embodiment of the present invention can realize the non-contact touch function by using the light emitted by a light source.
  • the embodiment of the present invention further provides a touch control substrate, which may include the touch control circuit provided by the embodiment of the present invention.
  • the touch substrate provided by the embodiment of the present invention may specifically be an array substrate.
  • the touch substrate of the embodiment of the present invention does not have a black matrix or the like on the illumination sensing module 1 .
  • the embodiment of the present invention further provides a touch display device, and the touch display device can include the touch substrate provided by the embodiment of the present invention.
  • the touch display device may specifically be a liquid crystal panel, a liquid crystal television, a liquid crystal display, an OLED (Organic Light Emitting Diode) panel, an OLED display, a plasma display, or an electronic paper.
  • a liquid crystal panel a liquid crystal television
  • a liquid crystal display a liquid crystal display
  • an OLED (Organic Light Emitting Diode) panel an OLED display
  • a plasma display or an electronic paper.
  • the touch control circuit, the touch substrate, and the touch display device include a light sensing module corresponding to a touch area, and is used for the touch area.
  • the first signal transmitted by the signal input line is used as an sensing signal, and is transmitted to a processor through the first sensing signal transmission line and the second sensing signal transmission line, respectively, the processor is based on The first sensing signal transmitted by the first sensing signal transmission line and the second sensing signal transmitted by the second sensing signal transmission line determine location information of the touch area. Therefore, the long-distance non-contact touch function can be realized, which is convenient for the user to use the touch display device.

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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

本发明提供了一种触控电路、触控基板及触控显示装置,该触控电路包括对应于一触控区域设置的光照感应模块,用于当所述触控区域被一符合第一预设条件的光线照射时,将信号输入线传输的第一信号作为感应信号,分别通过第一感应信号传输线和第二感应信号传输线传输至一处理器,所述处理器基于所述第一感应信号传输线传输的第一感应信号和所述第二感应信号传输线传输的第二感应信号确定所述触控区域的位置信息。从而可以实现远距离非接触式的触控功能,方便用户对触控显示装置的使用。

Description

:触控显示装置
本发明涉及显示技术领域,
Figure imgf000002_0001
基板及触控显示装置。
由于触控传感在面板内部 (in cell)的触控设 i†方案, 既可 触控面板的厚度减薄同时还百 :降低触控屏 因此, 成 为触控技术发展的方向。
而现在的 in- cell触控设 ΐ| 方-案 均为接触式触控设计方案, 即 通过^户手指或一触控笔触控显示面板表面, 导致感应电流 (电压) 发生变化, 从而基于感应电流的变化, 识别确定被触控的面板区 域。
这种接触式触控方式, 由于需要与触控面板发生直接接触才能 实现触控感应, 而无法实现非接触式的触控感应, 因此给 ffi户在远 距离使用触控显示装置带来不便。
本发明提供一种触控电路、 触控基板及触控显示装置, 丛而可 以实现远距离非接触式的触控功能。
本发明提供方案如下:
本发明实施例提供了一种触控电路, 包括:
光照感应模块, 对应于一触控区域设置, 用于当所述触控区域被 一符合第一预设条件的光线照射时,将信号输入线传输的第一信号作 为感应信号,分别通过第一感应信号传输线和第二感应信号传输线传 输至一处理器,所述处理器基于所述第一感应信号传输线传输的第一 感应信号和所述第二感应信号传输线传输的第二感应信号确定所述 触控区域的位置信息。
可选的, 所述光照感应模块包括:
光控单元、 第一传输开关以及第二传输开关, 其中:
光控单元, 分别与信号输入线、 第一传输开关、 第一感应信号 传输线连接, 用于当被所述光线照射时, 由截止状态转变为导通状 态, 当所述光控单元处于导通状态时, 信号输入线传输的第一信号 经 ώ所述光控单元传输至所述第一传输开关以及所述第一感应信号 传输线;
第一传输开关, 分别与所述信号输入线、 光控单元、 第二传输 开关连接, 用于在所述第一信号控制下, 将所述第一信号传输至所 述第二传输开关;
第二传输开关, 分别与所述第一传输开关、 第一栅线、 第二感 应信号传输线连接, ffi于在所述第一栅线传输的第二信号控制下, 将所述第一传输开关传输的第一信号传输至第二感应信号传输线。
可选的, 所述光控单元包括:
光电二极管, 所述光电二极管的阴极, 与所述第一传输开关、 第 一感应信号传输线连接于一节点, 所述光电二极管的阳极, 与所述信 可选的, 所述第一传输开关包括:
第一薄膜晶体管,所述第一薄膜晶体管的源极与所述信号输入线 连接, 所述第一薄膜晶体管的栅极与所述节点连接, 所述第一薄膜晶 体管的漏极与所述第二传输开关连接。
可选的, 所述第二传输开关包括:
第二薄膜晶体管, 所述第二薄膜晶体管的源极与所述第一传输 开关连接, 所述第二薄膜晶体管的栅极与所述第一栅线连接, 所述 第二薄膜晶体管的漏极与所述第二感应信号传输线连接。
可选的, 所述信号输入线、第一感应信号传输线与所述第一栅线 平行设置; 所述第二感应信号传输线与所述触控区域中包括的数据线平行 设置。
可选的, 所述第一感应信号用于确定所述触控区域的行坐标; 所述第二感应信号用于确定所述触控区域的列坐标。
可选的, 第一预设条件基于光线的照射强度、 波长、 类型确定。 可选的, 所述光线为激光。
可选的, 所述光线为红外线或紫外线。
可选的, 所述触控电路还包括像素区、 薄膜晶钵管和电容。 本发明实施例还提供了一种触控基板,该触控基板具体可以包括 上述本发明实施例提供的触控电路。
可选的, 所述触控基板为阵列基板。
可选的, 所述触控基板在所述光控单元之上不设置黑矩阵。 本发明实施例还提供了一种触控显示装置, 该触控显示装置具 体可以包括上述本发明实施例提供的触控基板。
从以上所述可以看出, 本发明提供的触控电路、 触控基板及触 控显示装置, 该触控电路包括对应于一触控区域设置的光照感应模 块, ^于当所述触控区域被一符合第一预设条件的光线照射时, 将 信号输入线传输的第一信号作为感应信号, 分别通过第一感应信号 传输线和第二感应信号传输线传输至一处理器, 所述处理器基于所 述第一感应信号传输线传输的第一感应信号和所述第二感应信号传 输线传输的第二感应信号确定所述触控区域的位置信息。 从而可以 实现远距离非接触式的触控功能, 方便用户对触控显示装置的使 用。
图 1为本发明实施例提供的触控电路结构示意图一
图 2为本发明实施例提供的触控电路结构示意图二
图 3为本发明实施例提供的触控电路结构示意图三 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。 "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 ffi相应地改变。
本发明实施例提供了一种触控电路, 如附图 1所示, 该触控电 路具体可以包括:
对应于一触控区域设置的光照感应模块 1, 用于当所述触控区域 被一符合第一预设条件的光线照射时,将信号输入线传输的第一信号 作为感应信号, 分别通过第一感应信号传输线 IOX和第二感应信号 传输线 IC Ύ传输至一处理器, 所述处理器 (MCU: Micro Controller Unit)基于所述第一感应信号传输线传输的第一感应信号和所述第二 感应信号传输线传输的第二感应信号确定所述触控区域的位置信息。
本发明实施例提供的触控电路, 可以实现非接触式触控功能, 从而方便^户对触控显示装置的远距离使^。
本发明实施例所实现的远距离非接触式触控功能, 可基于一手 持或固定光源所发送的一符合第一预设条件的光线实现, 即由一光 线代替用户的手或者触控笔, 实现在面板上的远距离触控操作。 本发明实施例所涉及的第一预设条件, 可以基于光线的照射强 度、 波长、 类型确定, 以避免环境光等对非接触式触控操作的千 扰。 在一具侔实施例中, 本发明实施例所涉及的光线具钵可为激 光, 而光源可以为激光笔等器件。 另外, 本发明实施例所涉及的光 线还可为红外线、 紫外线等。
本发明实施例所涉及的触控电路所属像素区域内, 如附图 1所 示, 具体还可以包括像素区、 薄膜晶体管 T3、 电容 C1等其他像素区 域所需器件。
在本发明具悻实施例中, 如附图 2所示, 本发明实施例所涉及 的光照感应模块 1内具体可以包括:
光控单元 10、 第一传输开关 11以及第二传输开关 12, 其中: 光控单元 10, 分别与信号输入线、 第一传输开关 11、 第一感应 信号传输线 IC- - X连接, 用于当被所述光线照射时, 由截止状态转变 为导通状态, 当光控单元 10处于导通状态时, 信号输入线传输的第 一信号经由光控单元 10传输至第一传输开关 11以及第一感应信号传 输线 IC- X;
第一传输开关 11, 分别与信号输入线、 光控单元 10、 第二传输 开关 12连接, 用于在第一信号控制下, 将第一信号传输至第二传输 开关 12;
第二传输开关 12,分别与第一传输开关 11、第一栅线(栅线 Ν)、 第二感应信号传输线 ΙΟΥ连接, ^于在第一櫥线传输的第二信号(即 栅极驱动信号) 控制下, 将第一传输开关 11传输的第一信号传输至 第二感应信号传输线 ΙΟΥ。
如附图 1、 2所示, 本发明实施例所涉及的信号输入线、 第一感 应信号传输线 ΙΟΧ可与第一櫥线 (栅线 Ν) 平行设置, 而本发明实 施例所涉及的第一栅线可以为触控电路所在像素行所属的 »线,也可 以是其他像素行所属的栅线。
同样, 如附图 1、 2所示, 本发明实施例所涉及的第二感应信号 传输线 IC Υ可与触控区域中包括的数据线平行设置。 本发明实施例所涉及的信号输入线、 第一感应信号传输线、 第 二感应信号传输线间互不连接, 且上述三根信号线的设置不能影响 触控电路中像素区的发光以及不能影响光线对光照感应模块 1的照 射。
在一具侔实施例中, 本发明实施例所涉及的信号输入线、 第一 感应信号传输线可与第一栅线同层设置, 而本发明实施例所涉及的 第二感应信号传输线可与数据线同层设置。
本发明实施例所涉及的信号输入线传输的第一信号,可以是具有 一固定电压 (例如 10V) 的信号, 当第一信号通过光控单元 10传输 至第一感应信号传输线 IOX时, 其作为第一感应信号通过第一感应 信号传输线传输至后端的处理器,处理器基于第一感应信号中携带的 第一感应信号传输线的标识确定被光线照射的触控区域的行坐标;当 第一信号通过第一传输开关 11、 第二传输开关 12传输至第二感应信 号传输线 IOY时, 其作为第二感应信号通过第二感应信号传输线传 输至后端的处理器,处理器基于第二感应信号中携带的第二感应信号 传输线的标识确定被光线照射的触控区域的列坐标, 那么, 基于确定 的行坐标和列坐标, 就能确定被光线照射的触控区域的位置信息, 从 而确定被光线照射的像素区域的位置信息, 后续可基于实际需要, 对 确定的像素区域进行控制, 例如驱动控制该像素区域发光等。
在一具体实施例中, 如附图 3所示, 本发明实施例所涉及的光 控单元 10具体可以包括:
光电二极管 Dl, 光电二极管 D1的阴极, 与第一传输开关 11、 第 一感应信号传输线 IOX连接于节点 A, 光电二极管 D1的阳极, 与信 号输入线连接。
本发明实施例中所涉及的光电二极管 Dl, 可以在被激光等强光 照射时, 由截止状态变为导通状态, 因此, 其可以实现本发明实施 例所涉及的光控单元 1的功能, 当其被强光照射时, 信号输入线传 输的第一信号可以通过光电二极管 D1传输至第一传输开关 11以及第 一感应信号传输线。 同样如附图 3所示, 本发明实施例所涉及的第一传输开关 11具 侔可以包括:
第一薄膜晶悻管 T1 , 第一薄膜晶体管 T1的源极与信号输入线连 接, 第一薄膜晶侔管 T1的栅极与节点 A连接, 第一薄膜晶钵管 Π的 漏极与第二传输开关 T2连接。
由于第一薄膜晶体管 T1的栅极与节点 A连接, 因此, 第一薄膜 晶体管 Π的导通或截止状态可由节点 A的电位决定, 那么, 当光电 二极管 D1被强光照射而处于导通状态时, 节点 A的电位被信号输入 线传输的第一信号充电至高电位, 从而使第一薄膜晶体管 T1处于导 通状态。 当第一薄膜晶体管 T1处于导通状态, 第一薄膜晶体管 T1源 极连接的信号输入线传输的第一信号通过第一薄膜晶体管 T1传输至 第二薄膜晶体管 T2。
同样如 f†图 3所示, 本发明实施例所涉及的第二传输开关 12具 体可以包括:
第二薄膜晶体管 T2, 第二薄膜晶体管 T2的源极与第一传输开关
T1 (漏极) 连接, 第二薄膜晶体管 T2的栅极与第一栅线 (栅线 N) 连接, 第二薄膜晶体管 T2的漏极与第二感应信号传输线 (IOY) 连 接。
由于第一栅线在开启状态下传输的栅极驱动信号为高电平信 号, 因此, 当第一栅线在一扫描周期内传输栅极驱动信号时, 第二 薄膜晶体管 T2处于导通状态, 这样, 输入线传输的第一信号经由第 一薄膜晶体管 Tl、 第二薄膜晶体管 Τ2传输至第二感应信号传输线。
通过上述本发明实施例提供的触控电路,即可借助一光源所发出 的光线, 实现非接触式触控功能。
本发明实施例还提供了一种触控基板,该触控基板具体可以包括 上述本发明实施例提供的触控电路。
在一具体实施例中, 本发明实施例提供的触控基板具体可为阵 列基板。 为了不影响光线照射光照感应模块 1, 本发明实施例所涉及触控 基板在光照感应模块 1之上不设置黑矩阵等遮光图层。
本发明实施例还提供了一种触控显示装置, 该触控显示装置具 侔可以包括上述本发明实施例提供的触控基板。
该触控显示装置具体可以为液晶面板、 液晶电视、 液晶显示 器、 0LED (有机发光二极管) 面板、 0LED显示器、 等离子显示器或 电子纸等装置。
从以上所述可以看出, 本发明提供的触控电路、 触控基板及触 控显示装置, 该触控电路包括对应于一触控区域设置的光照感应模 块, 用于当所述触控区域被一符合第一预设条件的光线照射时, 将 信号输入线传输的第一信号作为感应信号, 分别通过第一感应信号 传输线和第二感应信号传输线传输至一处理器, 所述处理器基于所 述第一感应信号传输线传输的第一感应信号和所述第二感应信号传 输线传输的第二感应信号确定所述触控区域的位置信息。 从而可以 实现远距离非接触式的触控功能, 方便用户对触控显示装置的使 用。
以上所述仅是本发明的实施方式, 应当指出, 对于本技术领域 的普通技术人员来说, 在不脱离本发明原理的前提下, 还可以作出 若千改进和润饰, 这些改进和润饰也应视为本发明的保护范围。

Claims

1. 一种触控电路, 包括:
光照感应模块, 对应于一触控区域设置, 用于当所述触控区域被一符合 第一预设条件的光线照射时, 将信号输入线传输的第一信号作为感应信号, 分别通过第一感应信号传输线和第二感应信号传输线传输至一处理器, 所述 处理器基于所述第一感应信号传输线传输的第一感应信号和所述第二感应信 号传输线传输的第二感应信号确定所述触控区域的位置信息。
2. 如权利要求 1所述的触控电路, 其中, 所述光照感应模块包括: 光控单元、 第一传输开关以及第二传输开关, 其中:
光控单元, 分别与信号输入线、 第一传输开关、 第一感应信号传输线连 接, ^于当被所述光线照射时, 由截 i 状态转变为导通状态, 当所述光控单 元处于导通状态时, 信号输入线传输的第一信号经由所述光控单元传输至所 述第一传输开关以及所述第一感应信号传输线;
第一传输开关, 分别与所述信号输入线、 光控单元、 第二传输开关连 接, )¾于在所述第一信号控制下, 将所述第一信号传输至所述第二传输开 关;
第二传输开关, 分别与所述第一传输开关、 第一榲线、 第二感应信号传 输线连接, 用于在所述第一栅线传输的第二信号控制下, 将所述第一传输开 关传输的第一信号传输至第二感应信号传输线。
3. 如权利要求 2所述的触控电路, 其中, 所述光控单元包括: 光电二极管, 所述光电二极管的阴极, 与所述第一传输开关、 第一感应 信号传输线连接于一节点, 所述光电二极管的阳极与所述信号输入线连接。
4. 如权利要求 3所述的触控电路, 其中, 所述第一传输开关包括: 第一薄膜晶体管, 所述第一薄膜晶体管的源极与所述信号输入线连接, 所述第一薄膜晶体管的栅极与所述节点连接, 所述第一薄膜晶体管的漏极与 所述第二传输开关连接。
5. 如权利要求 2-4中任一项所述的触控电路, 其中, 所述第二传输开关 包括: 第二薄膜晶体管, 所述第二薄膜晶体管的源极与所述第一传输开关连 接, 所述第二薄膜晶体管的栅极与所述第一栅线连接, 所述第二薄膜晶体管 的漏极与所述第二感应信号传输线连接。
6. 如权利要求 1 -- 5中任一项所述的触控电路, 其中, 所述信号输入线、 第一感应信号传输线与所述第一栅线平行设置;
所述第二感应信号传输线与所述触控区域中包括的数据线平行设置。
7. 如权利要求 1-- 6中任一项所述的触控电路, 其中, 所述第一感应信号 ffi于确定所述触控区域的行坐标;
所述第二感应信号用于确定所述触控区域的列坐标。
8. 如权利要求 1- 7中任一项所述的触控电路, 其中, 第一预设条件基于 光线的照射强度、 波长、 类型确定。
9. 如权利要求 1 -- 8中任一项所述的触控电路, 其中, 所述光线为激光。
10. 如权利要求 1-8中任一项所述的触控电路, 其中, 所述光线为红外
Figure imgf000011_0001
11. 如权利要求 i~io中任一项所述的触控电路, 还包括像素区、 薄膜 晶体管和电容。
12. —种触控基板, 其特征在于, 包括如权利要求 1至 11任一项所述的 触控电路。
13. 如权利要求 12所述的触控基板, 其特征在于, 所述触控基板为阵列 基板。
14. 如权利要求 12或 13所述的触控基板, 其特征在于, 所述触控基板 在所述光控单元之上不设置黑矩阵。
15. 一种触控显示装置, 其特征在于, 所述触控显示装置包括如权利要 求 12至 14任一项所述的触控基板。
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CN103699264A (zh) * 2013-12-24 2014-04-02 京东方科技集团股份有限公司 一种触控电路、触控基板及触控显示装置

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