KR20170079994A - Touch Screen Panel and Display device having the same - Google Patents

Touch Screen Panel and Display device having the same Download PDF

Info

Publication number
KR20170079994A
KR20170079994A KR1020150191125A KR20150191125A KR20170079994A KR 20170079994 A KR20170079994 A KR 20170079994A KR 1020150191125 A KR1020150191125 A KR 1020150191125A KR 20150191125 A KR20150191125 A KR 20150191125A KR 20170079994 A KR20170079994 A KR 20170079994A
Authority
KR
South Korea
Prior art keywords
bridge electrode
pixel
boundary
electrode
bridge
Prior art date
Application number
KR1020150191125A
Other languages
Korean (ko)
Inventor
김장환
오영식
Original Assignee
엘지디스플레이 주식회사
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.)
Filing date
Publication date
Application filed by 엘지디스플레이 주식회사 filed Critical 엘지디스플레이 주식회사
Priority to KR1020150191125A priority Critical patent/KR20170079994A/en
Publication of KR20170079994A publication Critical patent/KR20170079994A/en

Links

Images

Classifications

    • 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
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111Cross 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

Landscapes

  • Engineering & Computer Science (AREA)
  • 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)

Abstract

The touch screen panel according to the present invention can solve the boundary visibility problem between the bridge electrode and the pixel and improve the touch sensing sensitivity by adjusting the angle of the bridge electrode connecting the second touch pattern electrode.

Description

[0001] The present invention relates to a touch screen panel and a display device including the touch screen panel.

The present invention relates to a touch screen panel and a display device including the touch screen panel.

BACKGROUND ART [0002] A touch screen panel is a display device such as a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting display (OLED) Can be installed. The touch screen panel is an input device that can input a command of a user by selecting an instruction displayed on the screen of the display device as an object such as a user's hand or a stylus pen. To this end, the touch screen panel is provided on the front surface of the display device, and converts the contact position, which is in direct contact with the user's hand or object, into an electrical signal. Thus, the instruction content selected at the contact position is accepted as the input signal.

Such a touch screen panel can be replaced with a separate input device connected to a display device such as a keyboard and a mouse, so that the use range of the touch screen panel has been expanded. The touch screen panel is implemented by a resistive type in which a metal electrode is formed on an upper plate or a lower plate and a touched position is determined as a voltage gradient according to a resistance in a state where a DC voltage is applied, there are various methods such as a capacitive type, a surface acoustic wave, an infrared, and a surface acoustic wave method in which coordinates of a touched position are sensed by a capacitance change between the y-axis pattern electrodes . Among them, the electrostatic capacitance type converts a contact position into an electrical signal by sensing a change in the capacitance that the conductive detection pattern forms with another surrounding sensing pattern or the ground electrode or the like when the user's hand or object is in contact.

To this end, the capacitive touch screen panel includes a plurality of x-axis pattern electrodes connected along the x-axis direction and a plurality of y-axis pattern electrodes connected along the y-axis direction crossing the x- The electrode and the y-axis pattern electrode are arranged in the same layer, and the x-axis pattern electrode or the y-axis pattern electrode is connected to another bridged pattern. Accordingly, when an insulation layer is interposed between the x-axis pattern electrode and the y-axis pattern electrode, and when the touch panel touches the touch screen panel by a user's hand or object, the change in capacitance between the x- So that the x-axis and y-axis coordinates can be converted into electrical signals and displayed on the display panel of the display device.

However, in the touch screen panel having such a configuration, a border visibility problem occurs between the bridge pattern and the pixel at the boundary where the bridge patterns overlap with the pixel of the display device located below the touch screen panel.

One embodiment of the present invention can provide a touch screen panel and a display device including the touch screen panel that can solve the boundary visibility problem between the bridge pattern and the pixel. More specifically, according to an exemplary embodiment of the present invention, it is possible to provide a touch screen panel and a display device including the touch screen panel, which can solve the boundary visibility problem between the bridge pattern and the pixels by adjusting the inclination of the bridge pattern.

According to an aspect of the present invention, there is provided a touch screen panel including a substrate, a plurality of first touch pattern electrodes disposed in a first direction on the substrate, And a bridge electrode which connects the plurality of second touch pattern electrodes to each other and a bridge electrode which is tilted by 8 to 28 degrees from the second direction, Panel.

According to the touch screen panel and the display device including the touch screen panel according to an embodiment of the present invention, the tilt of the bridge pattern connecting the x-axis pattern electrode or the y-axis pattern electrode in the capacitive touch screen panel is adjusted, It is possible to solve the boundary visibility problem between the pixels of the display device and to improve the luminance.

1 is a block diagram of a display device according to an embodiment of the present invention.
2 is a plan view of a touch screen panel according to an embodiment of the present invention.
FIG. 3 is an enlarged view of FIG. 2 A. FIG.
4 is a diagram showing a boundary viewability between a bridge electrode and a pixel and a 3D image of the pixel when the bridge electrode is 0 DEG in one embodiment of the present invention.
FIG. 5 is a diagram showing the amount of light emitted from a pixel when the bridge electrode is 0 DEG in an embodiment of the present invention. FIG.
FIG. 6 is a diagram showing a 3D image of a pixel when the bridge electrode is 5 °, showing the boundary visibility between the bridge electrode and the pixel at the bridge electrode 5 ° in the embodiment of the present invention.
7 is a diagram showing the amount of light emitted from a pixel when the bridge electrode is 5 DEG in an embodiment of the present invention.
FIG. 8 is a diagram showing a 3D image of a pixel when the bridge electrode is 10 degrees, showing the boundary visibility between the bridge electrode and the pixel when the bridge electrode is 10 degrees in the embodiment of the present invention.
FIG. 9 is a diagram showing the amount of light emitted from a pixel when the bridge electrode is 10 degrees in an embodiment of the present invention. FIG.
10 is a diagram showing a 3D image of a pixel when the bridge electrode is at 15 degrees, showing the boundary visibility between the bridge electrode and the pixel when the bridge electrode is 15 degrees in the embodiment of the present invention.
11 is a diagram showing the amount of light emitted from a pixel when the bridge electrode is 15 DEG in an embodiment of the present invention.
FIG. 12 is a diagram showing a 3D image of a pixel when the bridge electrode is 20 °, showing the boundary visibility between the bridge electrode and the pixel when the bridge electrode is 20 °, according to an embodiment of the present invention.
13 is a diagram showing the amount of light emitted from a pixel when the bridge electrode is 20 DEG in an embodiment of the present invention.
FIG. 14 is a diagram showing a 3D image of a pixel when the bridge electrode is at 45 degrees, showing the boundary visibility between the bridge electrode and the pixel at the bridge electrode of 45 degrees in one embodiment of the present invention. FIG.
15 is a diagram showing the amount of light emitted from a pixel when the bridge electrode is at 45 degrees in an embodiment of the present invention.
FIG. 16 is a graph showing a light amount difference ratio at a boundary portion according to an angle of a bridge electrode in an embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the description of the embodiments, it is to be understood that each layer (film), region, pattern or structure may be referred to as being "on" or "under" a substrate, each layer It is to be understood that the terms " on "and " under" include both " directly "or" indirectly " do. In addition, the criteria for the top / bottom or bottom / bottom of each layer are described with reference to the drawings.

Furthermore, terms including ordinals such as first, second, etc. used in this specification may be used to describe various components, but since the terms are used only for the purpose of distinguishing one component from another, The elements are not limited to these terms.

It will be understood that when an element or layer is referred to as being another element or "on" or "on ", it includes both intervening layers or other elements in the middle, do. On the other hand, when a device is referred to as "directly on" or "directly above ", it does not intervene another device or layer in the middle.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprise "and / or" comprising ", as used in the specification, means that the presence of stated elements, Or additions.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a block diagram schematically showing a configuration of a display device according to an embodiment of the present invention.

1, the display device 300 according to the present invention may include a touch screen panel 100, a display panel 200, and the like.

The display device 300 can be called a portable terminal, a mobile terminal, a communication terminal, a portable communication terminal, a portable mobile terminal, or the like. For example, the display device may be a smart phone, a mobile phone, a game machine, a television (TV), a head unit for a car, a notebook computer, a laptop computer, a tablet, A personal digital assistant (PDA), a navigation device, an automatic teller machine (ATM) of a bank, a point of sale (POS) of a store, and the like. Further, the display device of the present invention may be applied to any device that can be bent or used or folded. However, the display device according to the present invention is not limited to this.

The touch screen panel 100 is an input device that can input a command of a user by selecting an instruction content displayed on a screen of the display device as an object such as a user's hand or a stylus pen. In the touch screen panel 100 according to an embodiment of the present invention, a capacitive type may be used. The capacitance type can be divided into a surface type and a projected type. In the touch screen panel 100 according to an embodiment of the present invention, a projection type method can be used. However, the present invention is not limited thereto.

In a projection type touch screen panel, an x-axis pattern electrode and a y-axis pattern electrode can be disposed on a substrate. The x-axis pattern electrode and the y-axis pattern electrode may be arranged so as to cross each other. An insulating layer may be interposed between the x-axis pattern electrode and the y-axis pattern electrode. The intersections of the x-axis pattern electrode and the y-axis pattern electrode may be isolated by an insulator. The intersection points of the x-axis pattern electrode and the y-axis pattern electrode may be one coordinate. The coordinate of the touched position can be detected as the capacitance between the x-axis pattern electrode and the y-axis pattern electrode changes when the touch screen panel is touched by the user's hand or an object. The touch screen panel 100 may be disposed on an independent substrate and attached to the upper surface of the display device or integrated with the display panel.

The display panel 200 includes an in-cell type touch panel 100 and an on-cell type touch panel 200 attached to the outer surface of the display panel 200. The on- Screen panel. The on-cell type can be explained in the display device according to the embodiment of the present invention. However, the present invention is not limited thereto.

The touch panel 100 may be attached to the outer surface of the display panel 200.

The display panel 200 may be a liquid crystal display, an organic light emitting display, a plasma display panel (PDP), a field emission display (FED), a vacuum fluorescent display (VFD) ) And the like. However, the present invention is not limited thereto.

When the touch screen panel 100 is touched by a user's hand or an object, coordinates touched by the capacitance change of the touch screen panel 100 can be detected. The display panel 200 may display the coordinates touched by the touch screen panel 100 as an image.

2 is a plan view of a touch screen panel according to an embodiment of the present invention.

2, the touch screen panel 100 according to an embodiment of the present invention includes a first touch pattern electrode 10, a connection unit 15, a second touch pattern electrode 20, a bridge, A pattern electrode 30, a first signal line 40, a second signal line 50, and a touch IC 60.

The first touch pattern electrode 10 may be in the form of diamond or diamond. However, it is not limited thereto. The first touch pattern electrode 10 may be disposed in a first direction. The plurality of first touch pattern electrodes 10 may be arranged in parallel in the first direction. For example, the first direction may be the y-axis direction. However, it is not limited thereto. The first touch pattern electrode 10 may be connected to the adjacent first pattern electrode 10. The first touch pattern electrode 10 may be made of a transparent conductive material. For example, transparent conductive materials include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO) ), Cadmium tin oxide (CTO), carbon nanotube (CNT), graphene, and the like. The first touch pattern 10 may sense a change in capacitance in the first direction.

The connecting portion 15 may be disposed in the first direction. The connecting portion 15 can connect adjacent first pattern electrodes. The connecting portion 15 may be formed of the same material as the first pattern electrode 10. For example, the material of the connection portion 15 may be indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO) CNT), graphene, and the like.

The second touch pattern electrode 20 may be in the form of diamond or diamond. However, it is not limited thereto. And the second touch pattern electrode 20 may be disposed in the second direction. The second touch pattern electrodes 20 may be arranged in parallel in the second direction. The second touch pattern electrode 20 may be arranged to intersect with the second touch pattern electrode 20. For example, the second direction may be the x-axis direction. However, it is not limited thereto. The second touch pattern electrode 20 may be connected to the second touch pattern electrode 20 adjacent thereto. The second touch pattern electrode 20 may be made of a transparent conductive material. For example, transparent conductive materials include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO), carbon nanotubes (CNT) Graphene, and the like. The second touch pattern electrode 20 can sense a change in capacitance in the second direction.

An insulating layer may be interposed between the first touch pattern electrode 10 and the second touch pattern electrode 20. A point where the first touch pattern electrode 10 intersects with the second touch pattern electrode may be one coordinate. The capacitance of the first touch pattern electrode 10 and the capacitance of the second touch pattern electrode 20 may be changed when the touch screen panel 100 is contacted by a user's hand or an object. The touch position can be detected by detecting the change of capacitance.

The first signal line 40 can connect the first touch pattern electrode 10 and the touch IC (0).

The second signal line 50 may connect the second touch pattern electrode 20 and the touch IC.

The touch IC 60 may be connected to the first touch pattern electrode 10 and the second touch pattern electrode 20 by the first signal line 40 and the second signal line 50. The touch IC 60 can detect the touch by sensing the capacitance change of the first touch pattern electrode 10 and the second touch pattern electrode 20. [

The bridge electrode 30 may connect adjacent second touch pattern electrodes 20. The bridge electrode 30 can electrically connect the adjacent second touch pattern electrodes 20. The material of the bridge electrode 30 may be the same as that of the first touch pattern electrode 10 and the second touch pattern electrode 20. For example, the material of the bridge electrode 30 is indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO) (CNT), graphene, and the like.

Conventional touch pattern electrodes can be arranged in a lattice. The light emitted from the light source may cause coherence due to the gap between the touch pattern electrodes and the bridge pattern connecting the touch pattern electrodes. When the pixel emits light due to the coherence phenomenon, a visibility problem may occur due to a problem of light mixing at the interface of the bridge electrode. Conventional bridge electrodes of the x-axis and the right angle may cause light mixing between the bridge electrode and the pixel when the pixel emits light. As a result, a visibility problem may occur at the boundary where the bridge electrode overlaps the pixel. Therefore, by adjusting the tilt of the bridge electrode 30, the problem of boundary visibility between the bridge electrode and the pixel can be solved. The boundary visibility problem between the pixel and the bridge electrode 30 according to the slope of the bridge electrode 30 will be described later.

FIG. 3 is an enlarged view of FIG. 2 A. FIG.

As shown in FIG. 3, the bridge electrode 30 may include a contact hole 32. The bridge electrode 30 may electrically connect the second touch electrode pattern 20 with the contact hole 32. An insulating layer may be interposed between the bridge electrode 30 and the second touch electrode pattern 20. For example, the insulating layer may include a silicon oxide film (SiO2), a silicon nitride film (SiN), or the like.

The touch screen panel 100 may be attached to the substrate of the display device. The pixels arranged in the display region of the display device may be arranged in the form of a matrix having a rectangular shape. At this time, when the bridge electrode 30 emits light, a problem of visibility failure occurs due to the difference in brightness between the boundary between the bridge electrode 30 and the pixel and the peripheral region of the boundary. Accordingly, in the touch screen panel 100 according to an exemplary embodiment of the present invention, such a problem can be solved by adjusting the inclination of the bridge electrode 30. FIG.

FIGS. 4 to 15 are diagrams showing the amount of light emitted from the pixel when changing the slope of the bridge electrode and the boundary visibility state between pixels according to the slope change of the bridge electrode when the pixel is in the white state. FIG.

FIGS. 4 and 5 show the boundary visibility state between the bridge electrode and the pixel and the amount of light emitted from the pixel when the slope of the bridge electrode is 0 °.

Referring to FIG. 4, when the pixel is in the white state and the bridge electrode is 0, the boundary visibility state indicated at the boundary between the pixel and the bridge electrode can be known.

FIG. 4 illustrates the boundary visibility state at the boundary between the pixel and the bridge electrode, with reference to FIG.

The value of a in FIG. 5 can indicate the maximum amount of light where the pixel and the bridge electrode do not overlap. The b value can represent the maximum amount of light emitted from the boundary between the pixel and the bridge electrode. The difference between the a value and the b value may be a difference in light quantity between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 0 °. A difference in light quantity may be caused by light mixing between the pixel and the bridge electrode at the boundary where the pixel and the bridge electrode are overlapped. Therefore, a difference in luminance may occur between the boundary between the pixel and the bridge electrode and the boundary between the pixel and the bridge electrode. The visibility problem may occur at the boundary between the pixel and the bridge electrode due to the difference in brightness between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode.

FIGS. 6 and 7 show the boundary visibility state between the bridge electrode and the pixel and the amount of light emitted from the pixel when the slope of the bridge electrode is 5 °.

Referring to FIG. 6, when the pixel is in the white state and the bridge electrode is 5 degrees, the boundary visibility state indicated at the boundary between the pixel and the bridge electrode can be known.

Referring to FIG. 7, the value of a may indicate the maximum amount of light emitted from the boundary between the pixel and the bridge electrode and the boundary region. The b value can represent the maximum amount of light emitted from the boundary between the pixel and the bridge electrode. The difference between the a value and the b value may be a difference in light quantity between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 5 °. The difference between the a value and the b value may be a difference in light quantity between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 5 °. When the bridge electrode of FIG. 5 is 0, the difference in the amount of light between the boundary portion of the bridge electrode and the pixel and the boundary region between the pixel and the bridge electrode, and the difference of the amount of light between the boundary portion of the pixel and the bridge electrode And the area around the boundary between the pixel and the bridge electrode, the difference in the amount of light between the boundary between the pixel and the bridge electrode and the area around the bridge electrode is reduced when the slope of the bridge electrode is 5 °. .

FIGS. 8 and 9 show the boundary visibility state between the bridge electrode and the pixel and the amount of light emitted from the pixel when the slope of the bridge electrode is 10 °.

Referring to FIG. 8, when the pixel is in the white state and the bridge electrode is 10 degrees, the boundary visibility state indicated at the boundary between the pixel and the bridge electrode can be known.

Referring to FIG. 9, the maximum amount of light can be displayed where the pixel and the bridge electrode do not overlap. The b value can represent the maximum amount of light emitted from the boundary between the pixel and the bridge electrode. The difference between the a value and the b value may be a difference in light quantity between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 10 °. The difference between the a value and the b value may be a difference in light quantity between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 10 °. When the bridge electrode of FIG. 5 is 0, the difference in the amount of light between the boundary portion of the bridge electrode and the pixel and the boundary region between the pixel and the bridge electrode and the difference in the amount of light between the boundary portion of the pixel and the bridge electrode And the area around the boundary between the pixel and the bridge electrode, the difference in the amount of light between the boundary between the pixel and the bridge electrode and the area around the bridge electrode is reduced when the slope of the bridge electrode is 10 °. . Therefore, the luminance difference between the pixel, the bridge electrode boundary, and the boundary region may be small when the slope of the bridge electrode is 10 °, as compared to when the slope of the bridge electrode is 0 °.

10 and 11 show the boundary visibility state between the bridge electrode and the pixel and the amount of light emitted from the pixel when the slope of the bridge electrode is 15 °.

Referring to FIG. 10, when the pixel is in the white state and the bridge electrode is 15 degrees, the boundary visibility state indicated at the boundary between the pixel and the bridge electrode can be known.

Referring to FIG. 10, the value of a may indicate the maximum amount of light at the boundary between the pixel and the bridge electrode and the boundary region. The b value can represent the maximum amount of light emitted from the boundary between the pixel and the bridge electrode. The difference between the a value and the b value may be the difference in the amount of light between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 15 °. The difference between the a value and the b value may be the difference in the amount of light between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 15 °. When the bridge electrode of Fig. 7 is 5 [deg.], When the difference in the amount of light in the boundary between the bridge electrode and the pixel and the boundary region between the pixel and the bridge electrode and the difference in the amount of light between the bridge electrode and the bridge electrode in Fig. And the area around the boundary between the pixel and the bridge electrode, the difference in the amount of light between the boundary between the pixel and the bridge electrode and the area around the pixel and the bridge electrode is reduced when the slope of the bridge electrode is 15 ° . Therefore, the luminance difference between the pixel, the bridge electrode boundary, and the boundary region may be small when the slope of the bridge electrode is 15 °, as compared to when the slope of the bridge electrode is 5 °.

12 and 13 show the boundary visibility state between the bridge electrode and the pixel and the amount of light emitted from the pixel when the slope of the bridge electrode is 20 °.

Referring to FIG. 12, when the pixel is in the white state and the bridge electrode is 20 degrees, the boundary visibility state indicated at the boundary between the pixel and the bridge electrode can be known.

Referring to FIG. 12, the value of a may indicate the maximum amount of light at the boundary between the pixel and the bridge electrode and the boundary region. The b value can represent the maximum amount of light emitted from the boundary between the pixel and the bridge electrode. The difference between the a value and the b value may be the difference in the amount of light between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 20 °. The difference between the a value and the b value may be the difference in the amount of light between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 20 °. When the bridge electrode of Fig. 7 is 5 [deg.], When the difference in the amount of light in the boundary between the bridge electrode and the pixel and the boundary region between the pixel and the bridge electrode and the difference in the amount of light between the bridge electrode and the bridge electrode in Fig. And the area around the boundary between the pixel and the bridge electrode, the difference in the amount of light between the boundary between the pixel and the bridge electrode and the area around the pixel and the bridge electrode is reduced when the slope of the bridge electrode is 15 ° . Therefore, the luminance difference between the boundary of the pixel and the bridge electrode and the boundary area around the boundary when the slope of the bridge electrode is 20 ° can be smaller than when the slope of the bridge electrode is 5 °.

FIGS. 14 and 15 show the boundary visibility state between the bridge electrode and the pixel and the amount of light emitted from the pixel when the slope of the bridge electrode is 45 °.

Referring to FIG. 14, when the pixel is in the white state and the bridge electrode is at 45 degrees, the boundary visibility state indicated at the boundary between the pixel and the bridge electrode can be known.

Referring to FIG. 15, the value of a may indicate the maximum amount of light at the boundary between the pixel and the bridge electrode and the boundary region. The b value can represent the maximum amount of light emitted from the boundary between the pixel and the bridge electrode. The difference between the a value and the b value may be the difference in the amount of light between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode when the slope of the bridge electrode is 20 °. When the slope of the bridge electrode is 45 °, the difference between the a value and the b value may be the difference in the amount of light between the boundary between the pixel and the bridge electrode and the boundary region between the pixel and the bridge electrode. When the bridge electrode of Fig. 9 is 10 degrees, the difference in the amount of light between the boundary portion of the bridge electrode and the pixel and the boundary region between the pixel and the bridge electrode, and the difference in the amount of light between the boundary portion of the pixel and the bridge electrode And the area around the boundary between the pixel and the bridge electrode, it can be seen that when the slope of the bridge electrode is 45 °, the difference in the amount of light between the boundary between the pixel and the bridge electrode, Therefore, when the slope of the bridge electrode is 10 °, the luminance difference between the pixel and the bridge electrode boundary region and the boundary region can be smaller than when the slope of the bridge electrode is 45 °.

As shown in FIGS. 5, 7, 9, 11, 13 and 15, the amount of light in the boundary between the pixel and the bridge electrode and the peripheral region of the boundary may vary depending on the slope of the bridge electrode. The value of the light amount a may be the maximum amount of light emitted from the pixel along the slope of the bridge electrode and from the pixel around the boundary region of the bridge electrode. The value of the light amount b may be the maximum amount of light emitted from the boundary between the pixel and the bridge electrode. The value of the light amount c may be the minimum amount of light emitted from the pixel in the area around the boundary between the pixel and the bridge electrode. The difference between the a value and the c value may be the difference in the amount of light in the area around the pixel and the bridge electrode. The difference between the a value and the b value may be a difference in light quantity between the pixel and the bridge electrode boundary region and the boundary region peripheral region. Accordingly, the light amount difference between the boundary between the pixel and the bridge electrode and the boundary region around the boundary can be known from Equation (1).

&Quot; (1) "

Percentage difference of light intensity at the boundary (%) = a - b / a - c

16 is a diagram showing a difference in light quantity between a boundary portion of a pixel and a bridge electrode according to a tilt of the bridge electrode and a peripheral region of the boundary portion.

Referring to FIG. 16, when the boundary light amount difference ratio is low, the luminance difference between the pixel and the bridge electrode boundary region and the boundary region peripheral region may be low. Therefore, when the boundary light quantity difference ratio is low, the problem of the visibility of the boundary of the bridge electrode can be solved. Further, when the boundary portion light quantity difference ratio has a value of 50% or less, the problem of the visibility of the boundary portion of the bridge electrode can be solved.

When the angle of the bridge electrode 30 is 0 ° or 5 ° with respect to the y-axis, the boundary portion light quantity difference ratio between the bridge electrode 30 and the pixel may be 87% and 71%, respectively. Therefore, when the angle of the bridge electrode 30 is 0 or 5 degrees, there may be a problem in the visibility of the boundary of the bridge electrode 30 due to the difference in luminance between the boundary between the pixel and the bridge electrode and the boundary region.

When the angle of the bridge electrode 30 is 10 to 25 relative to the y-axis, it can be seen that the ratio of the amount of light at the boundary between the bridge electrode 30 and the pixel is 38% to 46%. When the angle of the bridge electrode is 10 DEG to 25 DEG with respect to the y-axis, it is understood that the boundary portion light amount difference ratio is 50% or less. When the angle of the bridge electrode is 10 DEG to 25 DEG with respect to the y-axis, the boundary portion light amount difference ratio has a value of 50% or less, so that the visibility problem of the bridge electrode boundary portion can be solved.

It was determined that the visibility problem of the bridge electrode boundary could be solved when the light amount ratio of the boundary portion was 50% or less. As can be seen from Fig. 16, when the angle of the bridge electrode is 8 degrees to 28 degrees with respect to the y-axis, the boundary light amount ratio can be provided at 50% or less.

When the angle of the bridge electrode 30 is 10 to 25 relative to the y-axis, it can be seen that the boundary light amount difference ratio is improved more remarkably than when the angle of the bridge electrode 30 is 0 or 5 relative to the y-axis have. Thus, it can be seen that the brightness difference between the boundary between the pixel and the bridge electrode and the boundary region is improved by 0 or 5 degrees.

It can be seen that when the angle of the bridge electrode 30 is 10 to 15 with respect to the y-axis, the boundary portion light quantity difference ratio is improved compared to when the angle of the bridge electrode 30 is 0 or 5 relative to the y-axis . Therefore, when the angle of the bridge electrode 30 is 10 ° to 15 °, it can be seen that the brightness difference between the boundary between the pixel and the bridge electrode and the boundary region is improved by 0 ° or 5 °.

It can be seen that when the angle of the bridge electrode 30 is from 20 to 25 relative to the y-axis, the boundary portion light amount difference ratio is improved compared to when the angle of the bridge electrode 30 is 0 or 5 relative to the y-axis . Therefore, when the angle of the bridge electrode 30 is 20 to 25, it can be seen that the brightness difference between the boundary between the pixel and the bridge electrode and the boundary region is improved by 0 or 5 degrees.

When the angle of the bridge electrode 30 is 25 to 45 relative to the y-axis, it can be seen that the boundary portion light quantity difference ratio gradually increases. Therefore, there may be a problem in the visibility of the boundary of the bridge electrode 30 compared to when the angle of the bridge electrode 30 is 10 DEG to 25 DEG with respect to the y-axis.

When the angle of the bridge electrode 30 is in the range of 9 to 11 with respect to the y-axis, it can be seen that the ratio of the boundary portion light amount is improved as compared with the case where the angle of the bridge electrode 30 is 0 or 5 degrees with respect to the y- . Therefore, when the angle of the bridge electrode 30 is 9 ° to 11 °, it can be seen that the brightness difference between the boundary between the pixel and the bridge electrode and the boundary region is improved by 0 ° or 5 °.

(+) Angle with respect to the y-axis in describing the angle of the bridge electrode with reference to Figs. 4 to 16, even when the angle of the bridge electrode has a (-) angle with respect to the y-axis The same can be applied.

The touch screen panel according to an embodiment of the present invention can solve the visibility problem of the boundary between the pixel and the bridge electrode of the conventional bridge electrode by adjusting the angle of the bridge electrode from 8 degrees to 28 degrees, preferably from 10 degrees to 25 degrees. So that the overall luminance of the display device can be improved. In addition, the touch screen panel according to an embodiment adjusts the angle of the bridge electrode to -8 degrees to -28 degrees, preferably -10 degrees to -25 degrees, so that the visibility of the boundary of the pixel and the bridge electrode of the existing bridge electrode It is possible to solve the problem and to improve the overall luminance of the display device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

10: first pattern electrode 20: second pattern electrode 30: bridge pattern electrode
40: first signal wiring 50: second signal wiring 60: touch IC
100: touch screen panel 200: display panel

Claims (7)

Board;
A plurality of first touch pattern electrodes arranged in a first direction on the substrate;
A plurality of second touch pattern electrodes arranged in a second direction intersecting with the first direction on the substrate;
A bridge electrode connecting the plurality of second touch pattern electrodes to each other; And
Wherein the bridge electrode is tilted 8 to 28 degrees from the second direction.
The method according to claim 1,
Wherein the first touch pattern electrode and the second touch pattern electrode are formed of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO) A nanotube (CNT), and a graphene (Graphene).
3. The method of claim 2,
Wherein the bridge electrode is the same material as the first touch pattern electrode and the second touch pattern electrode.
The method according to claim 1,
Wherein the bridge electrode is tilted 10 to 15 degrees from the second direction.
The method according to claim 1,
Wherein the bridge electrode is tilted 10 to 25 degrees from the second direction.
The method according to claim 1,
Wherein the bridge electrode is inclined by 20 to 25 degrees from the second direction.
A display device comprising the touch screen panel according to any one of claims 1 to 6.

KR1020150191125A 2015-12-31 2015-12-31 Touch Screen Panel and Display device having the same KR20170079994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150191125A KR20170079994A (en) 2015-12-31 2015-12-31 Touch Screen Panel and Display device having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150191125A KR20170079994A (en) 2015-12-31 2015-12-31 Touch Screen Panel and Display device having the same

Publications (1)

Publication Number Publication Date
KR20170079994A true KR20170079994A (en) 2017-07-10

Family

ID=59355950

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150191125A KR20170079994A (en) 2015-12-31 2015-12-31 Touch Screen Panel and Display device having the same

Country Status (1)

Country Link
KR (1) KR20170079994A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114153328A (en) * 2021-12-03 2022-03-08 武汉天马微电子有限公司 Display panel and display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114153328A (en) * 2021-12-03 2022-03-08 武汉天马微电子有限公司 Display panel and display device
CN114153328B (en) * 2021-12-03 2024-01-23 武汉天马微电子有限公司 Display panel and display device

Similar Documents

Publication Publication Date Title
CN107885380B (en) Covering the back of a touch sensor
US10444891B2 (en) Touch panel and display device including the same
TWI633474B (en) Organic light emitting diode (oled) display panel with touch sensing electrodes
US9104254B2 (en) Touch screen panel
US8624845B2 (en) Capacitance touch screen
US9195348B2 (en) Electrostatic capacitive type touch screen panel
US20080218487A1 (en) Capacitive-type touch pad having special arrangement of capacitance sensor
US9671638B2 (en) High-accuracy in-cell touch panel structure of narrow border
US20090256825A1 (en) Pen stylus enabled capacitive touch system and method
US20150268827A1 (en) Method for controlling moving direction of display object and a terminal thereof
KR20110113035A (en) Touch sensing panel and device for detecting multi-touch signal
JP2019091159A (en) Display unit with touch panel
WO2015164056A1 (en) Input device having a reduced border region
US9250492B2 (en) In-cell touch panel structure of narrow border
KR101444118B1 (en) Improved one layer capacitive touch panel
US20110221698A1 (en) Touch screen panel
KR20160088533A (en) Touch sensor
US9626047B2 (en) Capacitive touch unit and capacitive touch screen
US9285624B2 (en) Single-layer capacitive touch unit and capacitive touch screen
CN101930143B (en) Electronic ink display panel and forming method thereof
KR20140095895A (en) Touch Screen Panel
KR20120094984A (en) Touch sensing panel
JP2012053804A (en) Capacitance type input device, electronic equipment using the same, and method for detecting approach position of conductor in capacitance type input device
KR101721299B1 (en) Touch sensing system comprising touch screen panel
KR20170079994A (en) Touch Screen Panel and Display device having the same