WO2015180288A1 - Ecran tactile intégré et dispositif d'affichage - Google Patents

Ecran tactile intégré et dispositif d'affichage Download PDF

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Publication number
WO2015180288A1
WO2015180288A1 PCT/CN2014/086072 CN2014086072W WO2015180288A1 WO 2015180288 A1 WO2015180288 A1 WO 2015180288A1 CN 2014086072 W CN2014086072 W CN 2014086072W WO 2015180288 A1 WO2015180288 A1 WO 2015180288A1
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WO
WIPO (PCT)
Prior art keywords
touch
touch driving
electrode
touch panel
electrodes
Prior art date
Application number
PCT/CN2014/086072
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English (en)
Chinese (zh)
Inventor
刘英明
董学
王海生
丁小梁
杨盛际
赵卫杰
任涛
刘红娟
邓立广
段亚锋
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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.)
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2015180288A1 publication Critical patent/WO2015180288A1/fr

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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

Definitions

  • At least one embodiment of the present invention is directed to an in-cell touch panel and display device.
  • Touch panels for touch input are widely used in televisions, cell phones, portable terminals, and other display devices.
  • the in-cell scheme in which the touch electrodes are embedded in the display screen can not only reduce the thickness of the module as a whole, but also reduce the manufacturing cost of the touch panel, and is valued by major manufacturers.
  • the in-cell touch panel includes an array substrate 10 and a color filter substrate 20 disposed opposite to the array substrate 10 .
  • the color filter substrate 20 has a plurality of touch sensing electrodes 21 thereon.
  • the array substrate 10 has a common electrode layer 11 including a plurality of touch driving electrodes 12 and a plurality of common electrodes 13 disposed at intersections. As shown in FIG.
  • each of the common electrode 13 and the touch sensing electrode 21 is a strip electrode extending in the second direction Y, and the touch sensing electrode 21 is located above each common electrode 13; the touch driving electrode 12 is along the first direction.
  • the X extends and includes a plurality of block-shaped touch driving sub-electrodes electrically connected through the touch driving signal line 14, such as the touch driving sub-electrodes 12a, 12b, 12c, and 12d shown in FIG.
  • At least one embodiment of the present invention provides an in-cell touch panel and a display device for improving the screen display of the two portions caused by the inconsistency between the touch drive electrodes and the common electrodes in the in-cell touch panel. Uneven phenomenon.
  • At least one embodiment of the present invention provides an in-cell touch panel including an array substrate including a common electrode layer thereon, and disposed on the common electrode layer and insulated from the common electrode layer
  • the in-cell touch panel further includes a touch sensing electrode, and the touch driving electrode is cross-insulated with the touch sensing electrode.
  • At least one embodiment of the present invention also provides a display device including the above-described in-cell touch panel.
  • 1 is a plan view showing a touch sensing electrode and a common electrode layer of an in-cell touch panel
  • Figure 2 shows a cross-sectional view along line A-A in Figure 1;
  • FIG. 3 is a schematic plan view showing a touch driving electrode and a common electrode layer of a touch panel according to an embodiment of the invention
  • Figure 4 shows a cross-sectional view along line B-B in Figure 3;
  • FIG. 5 shows a plan view of an array substrate in accordance with an embodiment of the present invention.
  • FIG. 3 is a plan view showing a touch driving electrode and a common electrode layer of a touch panel according to an embodiment of the present invention
  • FIG. 4 is a cross-sectional view taken along line B-B of FIG.
  • the in-cell touch panel structure is different from the common electrode and the touch driving electrode in the in-cell touch panel structure shown in FIG. 1 and FIG. 2
  • the in-cell touch panel according to the embodiment of the invention is different.
  • the common electrode layer is not divided so that the original function of the common electrode layer is not changed.
  • the in-cell touch panel includes an array substrate 10 including a common electrode layer 11 and a plurality of sets of touch driving electrodes disposed on the common electrode layer 11 and insulated from the common electrode layer 11. 12.
  • the in-cell touch panel further includes a touch sensing electrode 21, and the touch driving electrode 12 and the touch sensing electrode 21 are cross-insulated.
  • the in-cell touch panel includes an array substrate 10 and a color filter substrate 20 disposed opposite the array substrate 10, and a liquid crystal layer is interposed between the array substrate 10 and the color filter substrate 20, and passes through the pair of boxes.
  • the process pairs the boxes together to form a touch panel.
  • the color film substrate 20 is provided with a plurality of sets of touch sensing electrodes 21, the array substrate 10 is provided with a common electrode layer 11, the common electrode layer 11 is provided with an insulating layer 15, and the insulating layer 15 is provided with a plurality of sets of touch driving electrodes 12 And the touch driving electrode 12 is disposed to cross the touch sensing electrode 21 .
  • the touch sensing electrodes are not necessarily disposed on the color filter substrate, and may be disposed on the array substrate as long as they are not in contact with the touch driving electrodes.
  • the intersection of the touch driving electrode 12 and the touch sensing electrode 21 is such that the mutual capacitance of the edge is large and the capacitance is small, thereby improving the touch sensitivity.
  • each group of touch driving electrodes 12 extends in a first direction X
  • the touch driving electrodes 12 include a plurality of touch driving sub-electrodes T x having the same size and shape connected by the touch driving signal lines 14 , or It is said that each set of touch driving electrodes 12 is divided into a plurality of touch driving sub-electrodes T x having the same size and shape along the first direction X.
  • Each set of touch sensing electrodes 21 extends in a second direction Y that is perpendicular to the first direction X.
  • the first direction X may coincide with a direction of a data line on the array substrate
  • the second direction Y coincides with a direction of a gate line on the array substrate.
  • the touch driving sub-electrode Tx is disposed between the projections of the two adjacent touch sensing electrodes 21 on the array substrate 10, such that the touch driving electrodes 12 and the touch sensing electrodes 21 are in the array. There is no overlap between the projections on the substrate 10, thereby increasing the mutual capacitance of the edges, further improving the touch sensitivity.
  • the size and shape of each of the touch driving sub-electrodes T x are the same.
  • each of the touch driving sub-electrodes T x may have a width of 4 mm to 6 mm.
  • the spacing between adjacent two touch driving sub-electrodes T x may be 4 ⁇ m to 8 ⁇ m.
  • the projection of the touch sensing electrode 21 on the array substrate 10 is located between two adjacent columns of touch driving electrodes 12.
  • the touch protection electrode 12 may further be provided with an electrode protection layer 16 .
  • the electrode protection layer 16 may be formed in the same layer as the pixel electrode layer 17 and not connected to the pixel. Since the pixel electrode layer 17 is usually formed of a material such as ITO or IGZO, the electrode protection layer 16 is disposed on the touch driving electrode 12 to prevent the touch driving electrode 12 from being oxidized, so that the process stability is better, and to some extent, Reduced resistance. Those skilled in the art can understand that it can also be While the pixel electrode layer 17 is formed, the pixel electrode layer 17 is also formed as a protective layer on other electrode layers or pads. For example, the pixel electrode layer 17 is formed as a protective layer on the pad of the edge region of the touch panel, so that Prevent the electrode or pad from oxidizing while reducing the resistance of the electrode or pad.
  • the same row of touch driving sub-electrodes T x are electrically connected by at least one touch driving signal line 14 , and the touch driving signal lines 14 extend along the first direction X.
  • the touch driving signal line 14 is formed in the same layer as the touch driving electrode 12, the touch driving signal line 14 is connected to the adjacent touch driving sub-electrode T x , and the touch driving signal line 14 is
  • the touch sensing electrode 21 is insulated, for example, a via is disposed at a position corresponding to the touch sensing electrode 21, and the adjacent touch driving sub-electrode passes through the via and the lower layer of the touch sensing electrode
  • the metal layer is connected to the touch driving signal line, which not only reduces the number of process steps, but also helps to narrow the frame of the touch panel.
  • touch driving signal lines are not limited to one, and the same row of touch driving sub-electrodes may be electrically connected through a plurality of touch driving signal lines.
  • the touch driving electrode 12 can access the common electrode signal without touching.
  • the touch driving electrode 12 can be made of a transparent conductive material such as ITO, and can be formed, for example, in the same layer as the pixel electrode layer 17. Of course, in order to improve the conductivity and reduce the load of the touch driving electrodes, the screens of the touch driving electrode portion and the common electrode portion are unified.
  • the touch driving electrodes 12 may be made of a metal material.
  • the pattern of the touch driving sub-electrode T x may be in a grid shape, that is, through the horizontal and vertical A grid structure formed by intersecting wires. In one embodiment, each of the grids is equal in shape and size, as shown in FIG.
  • each touch driving sub-electrode T x is specifically described below.
  • Figure 5 shows a schematic plan view of an array substrate.
  • the wire pattern in the first direction X and the projection of the data line on the array substrate corresponds to the position of the projection of the gate line on the array substrate, thereby being formed above the array substrate, as shown by the thick solid line in FIG.
  • the metal mesh pattern can increase the edge electric field between each touch driving sub-electrode Tx and the touch sensing electrode 21, and can also prevent the touch driving sub-electrode Tx from being short-circuited with the pixel electrode.
  • At least one embodiment of the present invention further provides a display device comprising any of the in-cell touch panels as described above.
  • the display device can be a mobile phone, a tablet computer, a television, and a display Any product or component that has a display function, such as a display, a notebook, a digital photo frame, and a navigator.
  • the in-cell touch panel and the display device can not only effectively improve the load of the touch driving electrode and the common electrode, thereby improving the image quality, and effectively increasing the relationship between the touch sensing electrode and the touch driving electrode.
  • the mutual capacitance of the edge reduces the positive capacitance and improves the touch sensitivity.

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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

L'invention concerne un écran tactile intégré et un dispositif d'affichage. Le panneau tactile comprend un substrat matriciel (10), une couche d'électrode commune (11) formée sur le substrat matriciel (10) et de multiples électrodes d'attaque tactiles (12) disposées sur la couche d'électrode commune (11) et isolées de la couche d'électrode commune (11). Le panneau tactile intégré comprend également des électrodes de capteur tactiles (21). Les électrodes d'attaque tactiles (12) et les électrodes de capteur tactiles (21) présentent un agencement en quinconce et isolé.
PCT/CN2014/086072 2014-05-30 2014-09-05 Ecran tactile intégré et dispositif d'affichage WO2015180288A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410239524.6 2014-05-30
CN201410239524.6A CN103995616B (zh) 2014-05-30 2014-05-30 内嵌式触控面板及显示装置

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WO2015180288A1 true WO2015180288A1 (fr) 2015-12-03

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WO (1) WO2015180288A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106527834A (zh) * 2016-11-09 2017-03-22 厦门天马微电子有限公司 触控显示面板及其驱动方法、触控显示装置
CN112328117A (zh) * 2020-11-17 2021-02-05 武汉华星光电半导体显示技术有限公司 触控显示基板、触控显示面板和触控显示装置
US11328527B2 (en) 2017-07-13 2022-05-10 Boe Technology Group Co., Ltd. Ultrasonic fingerprint sensor, display substrate and driving method thereof, and display device
CN106325598B (zh) * 2016-08-19 2024-05-31 合肥京东方光电科技有限公司 触控显示面板及其制作方法、显示装置

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CN103995616B (zh) * 2014-05-30 2017-05-17 京东方科技集团股份有限公司 内嵌式触控面板及显示装置
CN104331210B (zh) * 2014-11-27 2018-12-18 京东方科技集团股份有限公司 一种内嵌式触摸屏、其触控检测方法及显示装置
CN104461135B (zh) * 2014-12-03 2017-12-08 京东方科技集团股份有限公司 一种触控基板、触控面板及显示装置
CN104460139B (zh) * 2014-12-31 2017-06-23 深圳市华星光电技术有限公司 触控显示装置及电子设备
CN104503633B (zh) * 2015-01-26 2018-07-06 京东方科技集团股份有限公司 一种内嵌式触摸屏、其驱动方法及显示装置
CN104698700B (zh) 2015-04-01 2018-05-08 上海天马微电子有限公司 一种触控显示面板及显示装置
CN107589874B (zh) * 2017-10-23 2023-11-10 京东方科技集团股份有限公司 一种阵列基板及制备方法、触控显示面板和触控显示装置
CN113867575A (zh) * 2021-10-20 2021-12-31 昆山龙腾光电股份有限公司 触控显示面板、显示装置及制作方法

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CN103049155A (zh) * 2012-12-13 2013-04-17 北京京东方光电科技有限公司 一种内嵌式触摸屏及显示装置
CN103207720A (zh) * 2013-03-29 2013-07-17 北京京东方光电科技有限公司 一种触控显示面板的控制方法及装置和显示装置
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CN103309070B (zh) * 2012-09-24 2016-08-17 上海天马微电子有限公司 触控式液晶显示装置
CN203858607U (zh) * 2014-05-30 2014-10-01 京东方科技集团股份有限公司 内嵌式触控面板及显示装置

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US20110291961A1 (en) * 2010-05-28 2011-12-01 Au Optronics Corporation Touch-sensing display panel
CN102541334A (zh) * 2010-12-30 2012-07-04 上海天马微电子有限公司 触摸显示装置及其制造方法
CN103049155A (zh) * 2012-12-13 2013-04-17 北京京东方光电科技有限公司 一种内嵌式触摸屏及显示装置
CN103019492A (zh) * 2012-12-21 2013-04-03 北京京东方光电科技有限公司 内嵌式电容触控显示面板、显示设备、控制装置及方法
CN103207720A (zh) * 2013-03-29 2013-07-17 北京京东方光电科技有限公司 一种触控显示面板的控制方法及装置和显示装置
CN103995616A (zh) * 2014-05-30 2014-08-20 京东方科技集团股份有限公司 内嵌式触控面板及显示装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106325598B (zh) * 2016-08-19 2024-05-31 合肥京东方光电科技有限公司 触控显示面板及其制作方法、显示装置
CN106527834A (zh) * 2016-11-09 2017-03-22 厦门天马微电子有限公司 触控显示面板及其驱动方法、触控显示装置
CN106527834B (zh) * 2016-11-09 2024-05-14 厦门天马微电子有限公司 触控显示面板及其驱动方法、触控显示装置
US11328527B2 (en) 2017-07-13 2022-05-10 Boe Technology Group Co., Ltd. Ultrasonic fingerprint sensor, display substrate and driving method thereof, and display device
CN112328117A (zh) * 2020-11-17 2021-02-05 武汉华星光电半导体显示技术有限公司 触控显示基板、触控显示面板和触控显示装置
CN112328117B (zh) * 2020-11-17 2023-12-12 武汉华星光电半导体显示技术有限公司 触控显示基板、触控显示面板和触控显示装置

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