WO2020191810A1 - 触控显示装置 - Google Patents
触控显示装置 Download PDFInfo
- Publication number
- WO2020191810A1 WO2020191810A1 PCT/CN2019/081611 CN2019081611W WO2020191810A1 WO 2020191810 A1 WO2020191810 A1 WO 2020191810A1 CN 2019081611 W CN2019081611 W CN 2019081611W WO 2020191810 A1 WO2020191810 A1 WO 2020191810A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- touch
- signal transmission
- trace
- display device
- electrodes
- Prior art date
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Definitions
- the present invention relates to the field of display technology, and in particular to a touch display device.
- touch technology As an important indicator of intelligence, touch technology has become more widely used. After rapid development, touch technology can be divided into piezoresistive type, optical type, capacitive type, etc. according to the touch principle. Among them, capacitive touch technology has been developed for many generations and is most widely used. Capacitive touch technology can be roughly divided into add-on type, on-cell type, and in-cell type.
- in-cell touch display panels are increasingly applied to electronic display devices such as mobile phones.
- the in-cell touch display panel integrates touch and display functions.
- the touch sensor is fabricated on a thin film transistor array substrate (Thin Film Transistor Array). Between Substrate, TFT Array Substrate (usually called TFT array substrate) and color filter substrate (Color Filter, CF), while ensuring touch sensitivity, it can make touch display products lighter and thinner and have better optical display performance.
- TFT Array Substrate usually called TFT array substrate
- color filter substrate Color Filter, CF
- the display and touch drive circuits can be integrated into a single chip, which can achieve low cost after mass production.
- FIG. 1 is a schematic structural diagram of a conventional touch display device.
- the touch display device includes a substrate 100, a plurality of touch electrodes 200 disposed on the substrate 100 and arranged in an array, and a device A display and touch driver integrated chip (TDDI IC) 300 on the substrate 100 and located outside the area where the plurality of touch electrodes 200 are located, and a plurality of touch strips arranged on the substrate 100 and arranged in different layers from the touch electrodes 200 Trace (Touch Trace) 400 and multiple data lines 500, multiple touch trace 400 and multiple data lines 500 are set on the same layer, multiple touch trace 400 and multiple data lines 500 are all connected with multiple touch
- TDDI IC display and touch driver integrated chip
- Each touch trace 400 is connected to a touch electrode 200 through the via 600.
- Each touch trace 400 has a continuous structure.
- the multiple touch traces 400 Both are connected to the public voltage. Since the touch trace 400 and the data line 500 are located on the same layer, they are relatively close and are prone to short circuits. The common voltage on the touch trace 400 will pull down the voltage on the data line 500, resulting in poor display and affecting product performance.
- the yield rate and please refer to FIG. 1, except for the touch trace 400 corresponding to the row of touch electrodes 200 farthest from the display and touch driver integrated chip 300, each touch trace 400 has a corresponding touch trace.
- the probability of short circuit is greatly increased.
- the purpose of the present invention is to provide a touch display device, which can reduce the probability of short circuit between the touch trace and the data line, and the yield of the product is high.
- the present invention provides a touch display device, including a substrate, a plurality of touch electrodes arranged on the substrate and arranged in an array, arranged on the substrate and arranged in a different layer from the touch electrodes
- Each touch wire corresponds to a touch wire; each touch wire is parallel to the row direction of the multiple touch electrodes; each touch wire includes a signal transmission part, each One end of the signal transmission part of one touch trace is connected to the corresponding touch electrode, and the other end of the signal transmission part of the multiple touch traces extends in the same direction to the outside of the area where the multiple touch electrodes are located.
- the touch display device also includes a display and touch drive integrated chip arranged on the substrate and located outside the area where the multiple touch electrodes are located; the other end of the signal transmission part of the multiple touch wires and the display and Touch driver integrated chip connection.
- the touch trace corresponding to each touch electrode also includes one end of the signal transmission part of the touch trace.
- a redundant part extending away from the other end of the signal transmission part of the touch wire; the redundant part includes a plurality of sub-redundant parts arranged at intervals in sequence.
- the length of multiple touch traces is the same.
- One end of the signal transmission part of each touch wire is connected to the corresponding touch electrode through at least one via.
- At least one connection terminal is provided at one end of the signal transmission part of each touch trace, and each connection terminal at one end of the signal transmission part of each touch trace is connected to the corresponding touch electrode through a via hole.
- One end of the signal transmission part of each touch wire is connected to the corresponding touch electrode through three via holes.
- the arrangement direction of the three vias is the same as the column direction of the plurality of touch electrodes.
- the touch display device also includes a plurality of data lines arranged on the substrate and arranged in the same layer as the plurality of touch wires; each data line is parallel to the column direction of the plurality of touch electrodes.
- the materials of the touch wires and the data wires are metal
- the material of the touch electrode is ITO; the shape of the touch electrode is rectangular.
- the touch display device of the present invention includes a substrate, a plurality of touch electrodes arranged on the substrate and arranged in an array, and a plurality of touch electrodes arranged on the substrate and arranged in a different layer from the touch electrodes.
- Each touch trace corresponds to one touch trace; each touch trace is parallel to the row direction of the multiple touch electrodes; each touch trace includes a signal transmission part, and each touch One end of the signal transmission part of the control trace is connected to the corresponding touch electrode, and the other end of the signal transmission part of the multiple touch traces extends in the same direction to the outside of the area where the multiple touch electrodes are located, which can effectively reduce the touch trace And the probability of short circuit between the data lines set on the same layer to ensure the yield of the product.
- FIG. 1 is a schematic diagram of the structure of a conventional touch display device
- FIG. 2 is a schematic structural diagram of the first embodiment of the touch display device of the present invention.
- FIG. 3 is a partial schematic diagram of touch traces and data lines of the first embodiment of the touch display device of the present invention.
- FIG. 4 is a schematic structural diagram of a second embodiment of the touch display device of the present invention.
- FIG. 5 is a partial schematic diagram of touch traces and data lines of the second embodiment of the touch display device of the present invention.
- the touch display device of the first embodiment of the present invention includes a substrate 10 , Located on the substrate 10 Multiple touch electrodes arranged in an array on top 20 , Located on the substrate 10 And touch electrode 20 Multiple touch traces in different layers 30 , Located on the substrate 10 On and on multiple touch electrodes 20 Display and touch drive integrated chip outside the area 40 And located on the substrate 10 Up and wiring with multiple touches 30 Multiple data lines set on the same layer 60 .
- Each touch electrode 20 With a touch trace 30 correspond. Every touch trace 30 With multiple touch electrodes 20 The column directions are parallel.
- Every touch trace 30 Including signal transmission part 31 , Each touch trace 30 Signal Transmission Department 31 And the corresponding touch electrode 20 Connection, multiple touch wires 30 Signal Transmission Department 31 The other end extends to multiple touch electrodes in the same direction 20 The outside of the area and the display and touch drive integrated chip 40 connection.
- Each data line 60 With multiple touch electrodes 20 The column directions are parallel.
- the substrate 10 Include effective display area 11 And in the effective display area 11 Outer peripheral zone 12 ,
- the multiple touch electrodes 20 Are in the effective display area 11 Inside, the display and touch drive integrated chip 40 Located in the outer area 12 Inside.
- each touch electrode 20 has the corresponding touch trace 30
- the corresponding touch trace 30 also includes the touch trace 30 Signal Transmission Department 31 One end away from the touch trace 30 Signal Transmission Department 31 Redundant part extending in the direction of the other end 32 .
- the redundant part 32 Including multiple sub-redundant parts arranged at intervals 321 .
- multiple touch wires 30 The length is the same.
- Each touch trace 30 Signal Transmission Department 31 At least one via 50 And the corresponding touch electrode 20 connection.
- Each touch trace 30 Signal Transmission Department 31 At least one connecting terminal 311 , Each touch trace 30 Signal Transmission Department 31 One end of each connection terminal 311 Corresponding through a via 50 And the corresponding touch electrode 20 connection.
- Each touch trace 30 Signal Transmission Department 31 One end passes through three vias 50 And the corresponding touch electrode 20 Connection, each touch trace 30 Signal Transmission Department 31 There are three connection terminals on one end 311 , Each connection terminal 311 Corresponding through a via 50 And the corresponding touch electrode 20 Connection, the three vias 50 Arrangement direction and multiple touch electrodes 20 The column direction is the same to increase touch electrodes 20 Wire with touch 30 The connection reliability.
- the touch control trace 30 And data line 60 The material is metal.
- the touch electrode 20 The material is indium tin oxide ( ITO ).
- the touch electrode 20 The shape is rectangular.
- the touch display device also includes 10 On and on multiple touch electrodes 20 Area and display and touch drive integrated chip 40 Touch test module 70 , The touch test module 70 Also located in the outer area 12 Inside.
- the touch display device further includes a plurality of pixels (not shown) arranged in an array and a plurality of scan lines (not shown), and each data line 50 A row of pixels are electrically connected, and each scan line is electrically connected to a row of pixels.
- the touch display device of the present invention performs touch control
- the display and touch drive integrated chip 40 Routing to multiple touches 30 Transmission of common voltage are preferably implemented as touch control
- the touch trace 30 And data line 50 It is simultaneously prepared by performing a yellow light process on an electrode material film.
- each touch trace 30 Only includes the signal transmission part 31 , And the redundant part is removed, and the rest are the same as the first embodiment, and will not be repeated here.
- each touch trace 30 Use signal transmission department 31
- the corresponding touch electrode 20 Integrated chip with display and touch driver 40 Connected and will have redundant parts 32
- Touch trace 30 Redundant part 32 Set up as multiple sub-redundant parts arranged at intervals in sequence 321 Structure so that even if the redundant part is 32 Wire with touch 30 Data cable on the same layer 50 A short circuit occurs between the touch wires 30 Will not pull down the data line 50
- the touch display device of the second embodiment of the present invention makes the touch trace 30 Only includes the signal transmission part 31 , And directly remove the redundant part, so there is no redundant part and data line 50
- the problem of short circuit so that the present invention can significantly reduce the 30 With data line 50
- the ratio of defects caused by short circuits has been verified, and the ratio of defects caused by short circuits between touch wires and data lines in the prior art is 4.2%
- the present invention can reduce the ratio to 2.08 %, the present invention has significant effects and effectively guarantees the yield of the
- the touch display device of the present invention includes a substrate, a plurality of touch electrodes arranged on the substrate and arranged in an array, and a plurality of touch electrodes arranged on the substrate and arranged in different layers from the touch electrodes.
- the probability of a short circuit between the data lines set on the same layer as that of the same layer ensures the yield of the product.
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
Abstract
本发明提供一种触控显示装置。本发明的触控显示装置包括衬底、设于衬底上且呈阵列式排布的多个触控电极、设于衬底上且与触控电极异层设置的多条触控走线；每一触控电极与一条触控走线对应；每一触控走线与多个触控电极的列方向平行；每一触控走线包括信号传输部，每一触控走线的信号传输部的一端与对应的触控电极连接，多条触控走线的信号传输部的另一端向同一方向延伸至多个触控电极所在区域外侧，能够有效降低触控走线及与其同层设置的数据线之间短路的几率，保证产品的良率。
Description
本发明涉及显示技术领域，尤其涉及一种触控显示装置。
触控技术作为智能化的一个重要指标，应用范围越来越广。触控技术经过快速的发展，按照触控原理可分为压阻式、光学式、电容式等，其中电容式触控技术经过多代的发展，应用最为广泛。电容式触控技术大致可分为外挂式（Add-on type）、外嵌式（On-cell type）、及内嵌式（In-cell type）。
如今，内嵌式触控显示面板越来越多地应用到手机等电子显示设备。内嵌式触控显示面板将触控与显示功能集成在一起，将触控传感器（Touch Sensor）制作在薄膜晶体管阵列基板（Thin Film Transistor Array
Substrate，TFT Array Substrate）（通常称为TFT阵列基板）与彩色滤光片基板（Color Filter，CF）之间，在保证触控灵敏度的同时，可以使触控显示产品更轻薄、光学显示性能更好，同时可以将显示和触控的驱动电路整合到一颗芯片，量产后可实现低成本效益。
请参阅图1，为现有的一种触控显示装置的结构示意图，该触控显示装置包括衬底100、设于衬底100上且呈阵列式排布的多个触控电极200、设于衬底100上且位于多个触控电极200所在区域外侧的显示和触控驱动集成芯片（TDDI IC）300以及设于衬底100上且与触控电极200异层设置的多条触控走线（Touch Trace）400及多条数据线500，多条触控走线400及多条数据线500同层设置，多条触控走线400及多条数据线500均与多个触控电极200的列方向平行。多条触控走线400的长度相等，每一条触控走线400经过过孔600对应与一个触控电极200连接，每一条触控走线400均为连续结构，多条触控走线400均接入公共电压。由于触控走线400及数据线500均位于同层，距离较近，容易出现短路，触控走线400上的公共电压会拉低数据线500上的电压，从而产生显示不良，影响产品的良率，并且请参阅图1，除了最远离显示和触控驱动集成芯片300的一行触控电极200所对应的触控走线400外的每一触控走线400均具有连接于对应的触控电极200与显示和触控驱动集成芯片300之间的信号传输部分410及除了信号传输部分410以外的冗余部分420，该冗余部分420的存在导致触控走线400与数据线500的短路几率大大增加。
本发明的目的在于提供一种触控显示装置，能够降低触控走线与数据线的短路几率，产品的良率高。
为实现上述目的，本发明提供一种触控显示装置，包括衬底、设于衬底上且呈阵列式排布的多个触控电极、设于衬底上且与触控电极异层设置的多条触控走线；每一触控电极与一条触控走线对应；每一触控走线与多个触控电极的列方向平行；每一触控走线包括信号传输部，每一触控走线的信号传输部的一端与对应的触控电极连接，多条触控走线的信号传输部的另一端向同一方向延伸至多个触控电极所在区域外侧。
所述触控显示装置还包括设于衬底上且位于多个触控电极所在区域外侧的显示和触控驱动集成芯片；多条触控走线的信号传输部的另一端与所述显示和触控驱动集成芯片连接。
除了最远离多条触控走线的信号传输部的另一端的一行触控电极外，每一触控电极所对应的触控走线还包括由该触控走线的信号传输部的一端向远离该触控走线的信号传输部的另一端的方向延伸的冗余部；所述冗余部包括依次间隔设置的多个子冗余部。
多条触控走线的长度相同。
每一触控走线的信号传输部的一端通过至少一个过孔与对应的触控电极连接。
每一触控走线的信号传输部的一端设有至少一个连接端子，每一触控走线的信号传输部的一端的每一连接端子对应通过一过孔与对应的触控电极连接。
每一触控走线的信号传输部的一端通过三个过孔与对应的触控电极连接。
该三个过孔的排列方向与多个触控电极的列方向相同。
所述触控显示装置还包括设于衬底上且与多条触控走线同层设置的多条数据线；每一数据线与多个触控电极的列方向平行。
所述触控走线及数据线的材料为金属；
所述触控电极的材料为ITO；所述触控电极的形状为矩形。
本发明的有益效果：本发明的触控显示装置包括衬底、设于衬底上且呈阵列式排布的多个触控电极、设于衬底上且与触控电极异层设置的多条触控走线；每一触控电极与一条触控走线对应；每一触控走线与多个触控电极的列方向平行；每一触控走线包括信号传输部，每一触控走线的信号传输部的一端与对应的触控电极连接，多条触控走线的信号传输部的另一端向同一方向延伸至多个触控电极所在区域外侧，能够有效降低触控走线及与其同层设置的数据线之间短路的几率，保证产品的良率。
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为现有的触控显示装置的结构示意图；
图2为本发明的触控显示装置的第一实施例的结构示意图；
图3为本发明的触控显示装置的第一实施例的触控走线及数据线的局部示意图；
图4为本发明的触控显示装置的第二实施例的结构示意图；
图5为本发明的触控显示装置的第二实施例的触控走线及数据线的局部示意图。
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。
请参阅图
2
及图
3
，本发明的第一实施例的触控显示装置包括衬底
10
、设于衬底
10
上且呈阵列式排布的多个触控电极
20
、设于衬底
10
上且与触控电极
20
异层设置的多条触控走线
30
、设于衬底
10
上且位于多个触控电极
20
所在区域外侧的显示和触控驱动集成芯片
40
以及设于衬底
10
上且与多条触控走线
30
同层设置的多条数据线
60
。每一触控电极
20
与一条触控走线
30
对应。每一触控走线
30
与多个触控电极
20
的列方向平行。每一触控走线
30
包括信号传输部
31
，每一触控走线
30
的信号传输部
31
的一端与对应的触控电极
20
连接，多条触控走线
30
的信号传输部
31
的另一端向同一方向延伸至多个触控电极
20
所在区域外侧与所述显示和触控驱动集成芯片
40
连接。每一数据线
60
与多个触控电极
20
的列方向平行。
具体地，所述衬底
10
包括有效显示区
11
及位于有效显示区
11
外侧的外围区
12
，所述多个触控电极
20
均位于有效显示区
11
内，所述显示和触控驱动集成芯片
40
位于外围区
12
内。
具体地，请结合图
2
及图
3
，在本发明的第一实施例中，除了最远离多条触控走线
30
的信号传输部
31
的另一端的一行触控电极
20
外，每一触控电极
20
所对应的触控走线
30
还包括由该触控走线
30
的信号传输部
31
的一端向远离该触控走线
30
的信号传输部
31
的另一端的方向延伸的冗余部
32
。所述冗余部
32
包括依次间隔设置的多个子冗余部
321
。
优选地，多条触控走线
30
的长度相同。
具体地，请参阅图
2
，每一触控走线
30
的信号传输部
31
的一端通过至少一个过孔
50
与对应的触控电极
20
连接。
进一步地，请参阅图
3
，每一触控走线
30
的信号传输部
31
的一端设有至少一个连接端子
311
，每一触控走线
30
的信号传输部
31
的一端的每一连接端子
311
对应通过一过孔
50
与对应的触控电极
20
连接。
优选地，请参阅图
2
及图
3
，每一触控走线
30
的信号传输部
31
的一端通过三个过孔
50
与对应的触控电极
20
连接，每一触控走线
30
的信号传输部
31
的一端设有三个连接端子
311
，每一连接端子
311
对应通过一过孔
50
与对应的触控电极
20
连接，该三个过孔
50
的排列方向与多个触控电极
20
的列方向相同，从而增加触控电极
20
与触控走线
30
的连接可靠性。
具体地，所述触控走线
30
及数据线
60
的材料为金属。
具体地，所述触控电极
20
的材料为氧化铟锡（
ITO
）。所述触控电极
20
的形状为矩形。
具体地，请参阅图
2
，所述触控显示装置还包括设于衬底
10
上且位于多个触控电极
20
所在区域与显示和触控驱动集成芯片
40
之间的触控测试模块
70
，该触控测试模块
70
也位于外围区
12
内。
具体地，所述触控显示装置还包括多个呈阵列式排布的像素（未图示）以及多条扫描线（未图示），每一条数据线
50
电性连接一列像素，每一条扫描线电性连接一行像素。
具体地，本发明的触控显示装置在进行触控时，由显示和触控驱动集成芯片
40
向多条触控走线
30
传输公共电压。
具体地，所述触控走线
30
及数据线
50
通过对一电极材料膜进行一道黄光制程后同时制得。
请参阅图
4
及图
5
，本发明的第二实施例的触控显示装置与上述第一实施例的区别在于，每一触控走线
30
仅包括信号传输部
31
，而去除了冗余部，其余均与第一实施例相同，在此不再进行赘述。
需要说明的是，本发明的第一实施例的触控显示装置中，每一触控走线
30
利用信号传输部
31
将对应的触控电极
20
与显示和触控驱动集成芯片
40
连接，并且将具有冗余部
32
的触控走线
30
的冗余部
32
设置为由多个依次间隔设置的多个子冗余部
321
构成，从而在进行触控时，即使冗余部
32
与触控走线
30
同层的数据线
50
之间发生短路，触控走线
30
也不会拉低数据线
50
的电压，而本发明的第二实施例的触控显示装置相比于第一实施例，使得触控走线
30
仅包括信号传输部
31
，而直接移除冗余部，从而不存在冗余部与数据线
50
短路的问题，从而本发明能够显著降低由触控走线
30
与数据线
50
短路造成的不良的发生比率，经验证，现有技术中触控走线与数据线短路造成的不良的发生比率为
4.2%
，本发明能够将该比率降低至
2.08
％，本发明的效果显著，有效地保证了产品的良率。
综上所述，本发明的触控显示装置包括衬底、设于衬底上且呈阵列式排布的多个触控电极、设于衬底上且与触控电极异层设置的多条触控走线；每一触控电极与一条触控走线对应；每一触控走线与多个触控电极的列方向平行；每一触控走线包括信号传输部，每一触控走线的信号传输部的一端与对应的触控电极连接，多条触控走线的信号传输部的另一端向同一方向延伸至多个触控电极所在区域外侧，能够有效降低触控走线及与其同层设置的数据线之间短路的几率，保证产品的良率。
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权利要求的保护范围。
Claims (10)
- 一种触控显示装置，包括衬底、设于衬底上且呈阵列式排布的多个触控电极、设于衬底上且与触控电极异层设置的多条触控走线；每一触控电极与一条触控走线对应；每一触控走线与多个触控电极的列方向平行；每一触控走线包括信号传输部，每一触控走线的信号传输部的一端与对应的触控电极连接，多条触控走线的信号传输部的另一端向同一方向延伸至多个触控电极所在区域外侧。
- 如权利要求1所述的触控显示装置，还包括设于衬底上且位于多个触控电极所在区域外侧的显示和触控驱动集成芯片；多条触控走线的信号传输部的另一端与所述显示和触控驱动集成芯片连接。
- 如权利要求1所述的触控显示装置，其中，除了最远离多条触控走线的信号传输部的另一端的一行触控电极外，每一触控电极所对应的触控走线还包括由该触控走线的信号传输部的一端向远离该触控走线的信号传输部的另一端的方向延伸的冗余部；所述冗余部包括依次间隔设置的多个子冗余部。
- 如权利要求3所述的触控显示装置，其中，多条触控走线的长度相同。
- 如权利要求1所述的触控显示装置，其中，每一触控走线的信号传输部的一端通过至少一个过孔与对应的触控电极连接。
- 如权利要求5所述的触控显示装置，其中，每一触控走线的信号传输部的一端设有至少一个连接端子，每一触控走线的信号传输部的一端的每一连接端子对应通过一过孔与对应的触控电极连接。
- 如权利要求5所述的触控显示装置，其中，每一触控走线的信号传输部的一端通过三个过孔与对应的触控电极连接。
- 如权利要求7所述的触控显示装置，其中，该三个过孔的排列方向与多个触控电极的列方向相同。
- 如权利要求1所述的触控显示装置，还包括设于衬底上且与多条触控走线同层设置的多条数据线；每一数据线与多个触控电极的列方向平行。
- 如权利要求9所述的触控显示装置，其中，所述触控走线及数据线的材料为金属；所述触控电极的材料为ITO；所述触控电极的形状为矩形。
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| CN109164928A (zh) * | 2018-06-29 | 2019-01-08 | 武汉华星光电技术有限公司 | 触控显示面板及其驱动方法、触控显示装置 |
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