CN105302399B - Touch panel - Google Patents
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- CN105302399B CN105302399B CN201510731743.0A CN201510731743A CN105302399B CN 105302399 B CN105302399 B CN 105302399B CN 201510731743 A CN201510731743 A CN 201510731743A CN 105302399 B CN105302399 B CN 105302399B
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the present invention provides a kind of touch panel.The touch panel can include：Multiple first detection patterns being connected to each other on the long side direction of screen, the multiple first detection pattern have at least one recessed unit being inwardly recessed from each side of polygon；With multiple second detection patterns being connected to each other on the short side direction of screen, second detection pattern has from the outstanding at least one protuberance in each side of polygon.The vertically and horizontally edge tilt predetermined angular of first detection pattern and second detection pattern.
Description
It is on 06 07th, 2011 the applying date that the application, which is, Application No. 201110160335.6, entitled " is touched
The divisional application of the application for a patent for invention of panel plate ".
The cross reference of related application
This application claims the korean patent application No.10-2010- for submitting Korean Intellectual Property Office on 19th in August in 2010
0080442, and the korean patent application No.10-2011-0004977 for submitting Korean Intellectual Property Office on January 18th, 2011
Priority and rights and interests, the two application full contents be incorporated herein by reference.
Technical field
Embodiment is related to the touch panel provided in image display device.
Background technology
Touch panel is a kind of input unit.Touch panel enables a person to select using his/her finger or instrument
Instruction.Touch panel also enables a person to inputting user command.Instruction is shown on the screen of image display device.
Touch panel is provided before image display device.Touch panel is converted to the contact position on screen
The electric signal of finger or instrument from direct contact screen.Therefore, the instruction selected at contact position is as input signal
It is input into the device.
Because touch panel can replace the input unit of separation, therefore touch panel can expand application.
The input unit of separation can be the keyboard and mouse for being attached to image display device.
Known touch panel includes resistive touch screen panel, capacitive touch screen panel and infrared touch panel
Plate.
Contact position is converted to electric signal by change of the capacitive touch screen panel by detecting direct capacitance.The change of direct capacitance
Change and produced by the conductivity detection pattern associated with other detection patterns or ground electrode.When finger or object contact touch-screen,
There is the conductivity detection pattern associated with other detection patterns or ground electrode.
Capacitive touch screen panel includes multiple detection patterns for being connected to each other in a first direction, and with first party
The multiple detection patterns being connected to each other on to the second direction of intersection, to obtain the coordinate of contact position.
In in general image display device, lateral length is different from longitudinal length, therefore the touch spirit on first direction
Sensitivity likely differs from the touch sensitivity in second direction.
In in general image display device, touch sensitivity is determined by the ratio between base electric capacity and touch electric capacity.When
Base electric capacity it is small and touch electric capacity it is big when, touch sensitivity improve.Therefore, when the lateral length of screen is different from longitudinal length,
The detection pattern being connected to each other in long side is more than the detection pattern being connected to each other in short side.Therefore, base electric capacity increases so that touches
Touch sensitivity decrease.
The content of the invention
Therefore, embodiment is directed to overcome substantially caused by the limitation of correlation technique and shortcoming one or more
The touch panel of individual problem.
Therefore, the one of embodiment is characterised by providing a kind of touch panel, and the touch panel is used for by being formed
The first detection pattern, the second detection pattern of arrangement in a second direction of arrangement in a first direction being arranged on identical layer
During with bridge pattern for the first or second detection pattern to be connected to each other, the area of the first detection pattern is set to be different from the second inspection
The area of mapping case, to improve touch sensitivity.
Therefore, embodiment another feature is that provide a kind of touch panel, the wherein touch panel is positioned at being used for
Formed on the upper substrate of the display panel of panel display apparatus, and the first and second inspections wherein formed in touch panel
Vertical/horizontal edge unit of mapping case and vertical/horizontal edge unit of bridge pattern are tilted by a predetermined angle, so as to prevent examining
The interference of mapping case and the strip form being arranged between the pixel on the viewing area of panel display board, it is visible to improve
Property.
Therefore, the further feature of embodiment is to provide a kind of touch panel, wherein in the first and second adjacent detections
Formed with dummy pattern between pattern, and the structure of dummy pattern is optimised, to improve the pixel corresponding with dummy pattern
Observability.
At least one of above and other feature and advantage can realize that this is touched by providing a kind of touch panel
Touching panel plate includes：Multiple first detection patterns being connected to each other on the long side direction of screen, the first detection pattern tool
There is at least one recessed unit being inwardly recessed from each side of polygon；It is more with being connected to each other on the short side direction of screen
Individual second detection pattern, the multiple second detection pattern have from the outstanding at least one protrusion in each side of polygon
Portion, wherein the vertically and horizontally edge of first detection pattern and second detection pattern can be tilted by a predetermined angle.
In addition, first detection pattern or second detection pattern are electrically connected to the phase on the same line by bridge pattern
Adjacent detection pattern, and the bridge pattern is in tilted layout by excluding both vertically as well as horizontally.
Now, the bridge pattern is made up of low resistance opaque metal, and first detection pattern and described second
Detection pattern is made up of transparent conductive material.
In addition, the touch panel further comprise positioned at first detection pattern and second detection pattern it
Between multiple island shape dummy patterns, and the dummy pattern by with first detection pattern and the second detection pattern phase
Same transparent conductive material is made.
In addition, the scope of the predetermined angular is from 2 degree to 10 degree, and described at least the one of second detection pattern
Individual protuberance includes multiple protruding portion, and at least one recessed unit of first detection pattern includes multiple recessed lists
Member, and the protruding parts of second detection pattern are in space caused by the recessed unit as first detection pattern
In.
At least one of above and other feature and advantage can also be by by first detection pattern and described second
Detection pattern provides to be realized on the upper substrate of panel display board, more specifically, first detection pattern and described the
Two detection patterns are formed in first detection pattern and second detection pattern with providing the pixel in panel display board
In the equitant region of multiple pixels in region, and the spacing of the pixel is not first detection pattern and described
The arbitrary integer time of the spacing of two detection patterns.
The touch panel may further include to be formed in first detection pattern and second detection pattern
Between dummy pattern, and the dummy pattern is by saturating with first detection pattern and the second detection pattern identical
Bright conductive material is made.
The dummy pattern can include multiple island shape dummy patterns, and the horizontal sides of the multiple island shape dummy pattern
Edge unit and/or vertical edge cells are implemented as so that the horizontal edge unit and/or the vertical edge cells with it is more
The overlapping length of individual pixel is minimum.
The horizontal edge unit and/or vertical edge cells of the dummy pattern have the arranged direction for deviateing the pixel
About 10 degree to 80 degree of angle, and the dummy pattern has polygonal shape.
The dummy pattern is formed integrated connection between first detection pattern and second detection pattern
Single main body.
Brief description of the drawings
Exemplary embodiment is described in detail by reference to accompanying drawing, above and other feature and advantage are to ordinary skill
It will be apparent for personnel, in accompanying drawing：
Fig. 1 shows the floor map of the touch panel according to an embodiment；
Fig. 2A shows the principal plane figure of the first detection pattern and the second detection pattern according to an embodiment；
Fig. 2 B show the amplification view of Fig. 2A specific part；
Fig. 3 A and Fig. 3 B show the view of the shape of the edge cells of Fig. 2 detection pattern；
Fig. 4 A and Fig. 4 B show the structural section figure of the structure of the dummy pattern according to another embodiment；And
Fig. 5 shows the sectional view of the structure of the dummy pattern according to another embodiment.
Embodiment
Exemplary embodiment is more fully described below with reference to accompanying drawing；However, it is possible in different forms will be exemplary
Embodiment embodies, and should not be considered limited to embodiment given here.
Hereinafter, the embodiment that those of ordinary skill in the art can easily implement is described in detail with reference to figure 1- Fig. 3 B.
Fig. 1 is the floor map according to the touch panel of an embodiment.
Referring to Fig. 1, the touch panel according to an embodiment is capacitive touch screen panel, and including：Transparency carrier
10th, multiple first detection pattern 12a and the second detection pattern 12b and position sensing line 15 on the transparent substrate 10 are formed.
Position sensing line 15 is electric by the externally connected driving of the first detection pattern 12a and the second detection pattern 12b by pad cell 20
Road.
First detection pattern 12a is formed as in screen using the transparent electrode material of such as tin indium oxide (ITO) etc
It is connected to each other on long side direction.For example, when long side direction is vertical direction (Y direction), the first detection pattern 12a is formed as
It is connected to each other on column direction in screen.First detection pattern 12a can be connected to the relevant position detection of each column unit
Line 15.
When the long side direction of screen is horizontally oriented (X-direction), the first detection pattern 12a can be formed as in screen
It is connected to each other on interior line direction.For convenience, it is assumed that the long side direction of screen is column direction.
First detection pattern 12a can be patterned as being connected to each other on the column direction of screen.First detection pattern 12a
The pattern with separation can also be formed as.Therefore, the first detection pattern 12a being arranged in same row can be by separation
Bridge pattern is connected to each other.
Second detection pattern 12b is similar with the first detection pattern 12a to be formed using transparent electrode material.Second detection pattern
12b is formed as connecting on the short side direction of screen.
When the short side direction of screen is horizontally oriented (X-direction), the second detection pattern 12b can be formed as in screen
It is connected to each other on interior line direction.Second detection pattern 12b can be respectively connecting to the position sensing line 15 of each row unit.
Second detection pattern 12b can be patterned as being connected to each other on the line direction of screen.Second detection pattern 12b
The pattern with separation can also be formed as.Therefore, arrange that the second detection pattern 12b in the same row can be by the bridge that separates
Pattern connects.
In the present embodiment, by structure as description：Wherein the first detection pattern 12a is patterned as the row in screen
It is connected to each other on direction, and the second detection pattern 12b is connected to each other by the bridge pattern 14 of separation.
When the first detection pattern 12a and the second detection pattern 12b are located in different layers, the first detection pattern 12a and
Two detection pattern 12b can be patterned as respectively in a column direction be connected to each other on line direction.
Position sensing line 15 (does not show the first detection pattern 12a and the second externally connected drive circuits of detection pattern 12b
Go out).External drive circuit can be the position sensing circuit by pad 20.
Position sensing line 15 can be arranged in the outside of the screen of display image.Except for forming the first detection pattern 12a
Outside the second detection pattern 12b transparent material, position sensing line 15 can be by such as molybdenum (Mo), silver-colored (Ag), titanium (Ti), copper
(Cu), a variety of low electrical resistant materials of aluminium (Al), molybdenum/aluminium/molybdenum (Mo/Al/Mo) etc are made.Bridge pattern 14 can be by examining with position
The identical material of survey line 15 is made up of identical technique.
When the contact object of such as human hand or touch rod etc contacts with above-mentioned touch panel, there are capacitance variations.
The capacitance variations of contact position are sent to driving electricity from detection pattern 12a and 12b via position sensing line 15 and pad cell 20
Road (not shown).Capacitance variations are converted to electric signal by X input processing circuits and Y input processing circuit (not shown).So as to obtain
Obtain contact position.
Touch panel can be formed in the separate substrates on image display device to be attached to.Touch panel also may be used
To be formed in the separate substrates to be integrated with the display panel of image display device.
Touch panel can be formed on the upper substrate of organic electroluminescence display panel or liquid crystal display panel.Therefore, touch
Touching panel plate can integrate with display panel.When display panel and touch panel integrate each other, can provide thin
Image display device.
When the first detection pattern 12a and the second detection pattern 12b each pattern form and essentially identical size, screen
The base electric capacity on base electric capacity and screen short side direction on long side direction is different from each other.Therefore, touch sensitivity possible deviation.
When performing touch input to touch panel, it is assumed that the change of electric capacity is produced by touched detection pattern.Cause
This, touch electric capacity is Δ C, and the base electric capacity of detection pattern is Cnode before touch.Therefore, touch sensitivity is Δ C/
Cnode。
Base electric capacity is caused by structural issue.Base electric capacity has main component, such as positioned at touch panel
Caused parasitic capacitance between other elements of the display panel of lower section.For example, parasitic capacitance can be by forming in organic light emission
Cathode electrode on the preceding surface of display panel produces.Parasitic capacitance can also be by forming on the preceding surface of liquid crystal display panel
Public electrode produce.Parasitic capacitance can also be produced by the first detection pattern 12a and the second detection pattern 12b.
Caused parasitism between ground signal line, the first detection pattern 12a and the second detection pattern 12b in display panel
Electric capacity can also be the auxiliary element of base electric capacity.
Electric capacity is touched to realize that touch panel designs.Therefore, the average capacitance changed by caused touch event
For detecting location.
Therefore, when base electric capacity is small and touch electric capacity is big, the touch sensitivity of touch panel improves.When the first detection figure
When being connected to each other on the long side direction of screen, the first detection pattern 12a number ratio is connected to each other case 12a on short side direction
The second detection pattern 12b number it is more.Therefore, the first detection pattern 12a base electric capacity is more than the second detection pattern 12b base
Electric capacity.First detection pattern 12a touch electric capacity is identical with the second detection pattern 12b.On the whole, on screen long side direction
Touch sensitivity is low, therefore the overall touch sensitivity of touch-screen is deteriorated.
In the present embodiment, in order to prevent touch sensitivity to be deteriorated, the first detection pattern 12a of reduction respective area, with
Just the big base electric capacity on screen long side direction is reduced.In order to reduce on screen long side direction with the base electric capacity on short side direction it
Difference, the second detection pattern 12b is designed as the area with increase.
The present embodiment is modified to the pattern form of detection pattern so that the first detection pattern 12a respective area is small
In the second detection pattern 12b respective area.Modification to the pattern form of detection pattern reduce on screen long side direction with
The difference of base electric capacity on short side direction.Therefore, the touch sensitivity of touch panel can be improved.
The example of first detection pattern 12a and the second detection pattern 12b pattern form will be described with reference to figure 2A- Fig. 3 B.
Fig. 2A is the principal plane figure for showing the first detection pattern and the second detection pattern according to an embodiment.Fig. 2 B are figures
The amplification view of 2A specific part.
As described by referring to Fig. 1, the first detection pattern 12a is patterned as on the column direction (Y direction) of screen
It is connected to each other.Second detection pattern 12b is disposed on the line direction (X-direction) of screen, and in the short side direction of screen
On line direction (X-direction) on be connected to each other.Second detection pattern 12b can be separated each other, and by bridge pattern 14 each other
Connection.
Referring to Fig. 2A, the first detection pattern 12a be patterned as having from each side of polygon and be inwardly recessed (that is, with
Recessed shape inwardly patterns) at least one recessed unit 12a1.
The second detection pattern 12b being adjacently positioned with the first detection pattern 12a is patterned as having from each of polygon
At least one protuberance 12b1 on individual side outstanding (that is, outwards being patterned with protruding shape).
Second detection pattern 12b protuberance 12b1 has corresponding with the first detection pattern 12a recessed unit 12a1
Shape.Protuberance 12b1 is located in the space formed by recessed unit 12a1.
When the first detection pattern 12a and the second detection pattern 12b have identical diamond shape, the second detection pattern
12b area equally increases with protuberance 12b1 numbers.First detection pattern 12a area also with recessed unit 12a1
Number equally reduces.
Reduce with each first detection pattern 12a area, each passage on screen long side direction, i.e., on column direction
Each passage at base electric capacity reduce, therefore touch sensitivity is improved.The first detection figure can be determined by testing
The width and number of the case 12a recessed unit being inwardly formed from each side, to reduce base electric capacity in a range.The scope
It must is fulfilled for the predetermined touch electric capacity needed for touch panel.
By the first detection pattern 12a of reduction area, the base electric capacity on screen long side direction reduces.Pass through increase second
Detection pattern 12b area, the base electric capacity increase on screen short side direction.Therefore, screen long side direction can be accurately matched
The size of base electric capacity upper and on short side direction.
Second detection pattern 12b is patterned as having from the outstanding protuberance 12b1 in each side of polygon.It is more
Side shape can have diamond shape.As illustrated, the first detection pattern 12a and the second detection pattern 12b are close to each other arrangement.Cause
This, can ensure to reduce difference not with the first detection pattern 12a area for increasing the second detection pattern 12b space of area
It is more.
Second detection pattern 12b each protuberance 12b1 can be protruded with corresponding to each of the first detection pattern 12a
The recessed unit 12a1 much the same area of area.The first detection pattern 12a recessed unit 12a1 being inwardly recessed area
Area with the second detection pattern 12b outstanding protuberance can be approximately or substantially identical each other.
The present embodiment not limited to this.Second detection pattern 12b each protuberance 12b1 area can be less than the first inspection
Mapping case 12a each recessed unit 12a1 area.In this case, the first detection pattern 12a and the second detection pattern
12b can be arranged more closely each other.
It is very big when having between the base electric capacity for having very big difference between the length of screen long side and the length of short side and being compensated
During difference, the second detection pattern 12b each protuberance 12b1 area can be each recessed more than the first detection pattern 12a
Unit 12a1 area.
When the first detection pattern 12a and the second detection pattern 12b pattern form change, screen long side direction (Y-axis side
To) on can match each other with the base electric capacity on short side direction (X-direction).
Due to approximate or identical each other with the touch sensitivity on short side direction on screen long side direction, therefore position sensing
In error be reduced and accuracy is improved.It is, therefore, possible to provide the touch screen panel with improved touch sensitivity
Plate.
Self-driven capacitive touch screen panel applies voltage to each passage on screen long side direction and on short side direction
Or electric current, and detect whether to generate touch event by curtage caused by measurement.The detection is by producing electricity
The opening position of stream or voltage applies curtage and occurred.Therefore, the base electric capacity in all directions matches each other so that can be with
Reduce the error in position sensing, and improve touch sensitivity.
The touch panel for being configured to have the detection pattern of above-mentioned shape is formed directly into or is attached to FPD
On the upper substrate of panel.Panel display board can be organic electroluminescence display panel and liquid crystal display panel.
Bridge pattern 14 for the second detection pattern 12b to be connected to each other is made up of low resistive metal.Low resistive metal has
There is opaque characteristic, so as to stop the light sent from panel display board.
The each pixel (not shown) formed on the viewing area of panel display board is arranged in the matrix form.Bridge pattern 14
It can be arranged in the horizontal direction as arranging pixel (not shown) on a display panel.When bridge pattern 14 a part with
When the pixel formed in respective regions is completely overlapped, from the light that overlapping pixel is sent by bridge pattern blocks.Therefore produce dark
Spot.
In order to overcome blackening, in the embodiment shown in Fig. 2 B, bridge pattern 14 is inclined by arranging, so as to minimize and pixel
(not shown) it is overlapping.Pixel (not shown) is formed in the region corresponding with bridge pattern.Therefore, will not produce above-mentioned dark
Spot.
In the present embodiment, bridge pattern 14 is neither be arranged vertically nor horizontally disposed, but arranged with slant pattern.
Bridge pattern 14 is formed on another layer by inserting insulating barrier between the second detection pattern 12b.Moreover, bridge
Pattern 14 is formed that the second detection pattern 12b is electrically connected to each other by the contact hole 17 being formed in insulating barrier.
Insulating barrier can be by silica (SiO2) or silicon nitride (SiNx) be made, and with being different from transparent conductive material
Refractive index.Transparent material can be used for forming insulating barrier and the first and second detection patterns.
The refractive index of silica is 1.5, and the refractive index of transparent conductive material (ITO) is 1.97.Therefore, therebetween
Difference is very big.
Region between detection pattern 12a and 12b, i.e., do not form in the region of transparent conductive material, refractive index it
Difference is apparent.Touch panel reflects and reflects the light sent from display panel and exterior light.Therefore, display device can
Opinion property is deteriorated.
In order to overcome the problem, in the embodiment shown in Fig. 2A, in the first detection pattern 12a adjacent to each other and second
In region 16 between detection pattern 12b, multiple island shape dummy pattern 16a can be formed to prevent from exposing insulating barrier.
Now, dummy pattern 16a is with detection pattern 12a and 12b identical transparent conductive material by being made, and so doing can be with
Prevent insulating barrier from exposing as before, produced so as to overcome by the refringence between transparent conductive material and insulating barrier
Raw observability is deteriorated.
Fig. 3 A- Fig. 3 B are the views of the shape of the edge cells for the detection pattern for showing Fig. 2.
The problem of Fig. 3 A are shown when horizontally and vertically forming the edge of detection pattern.Fig. 3 B are shown according to an embodiment
The detection pattern being tilted by a predetermined angle edge.
Referring to Fig. 3 A, be configured to have detection pattern 12a and 12b touch panel be formed directly into or be attached to it is flat
On the upper substrate of plate display panel.Panel display board can be organic electroluminescence display panel and liquid crystal display panel.
Detection pattern 12a and 12b are formed in the region overlapping with multiple pixels 22.Multiple pixels 22 are provided at flat board
In the pixel region of display panel.Because the resolution ratio of pixel 22 is very high, therefore some interference bars may be observed on screen
Line.Pixel 22 is provided in the pixel region of panel display board.Interference fringe passes through display panel and touch screen panel in light
The opening position of plate occurs.
Because display panel has high-resolution, the size and spacing of pixel 22 diminish.Therefore, sent from display panel
What light was refracted or scattered at the detection pattern 12a and 12b of touch panel vertical edge 12c1 and horizontal edge 12c2
Possibility increases.
Fig. 3 A- Fig. 3 B show vertically and horizontally edge 12c1 and 12c2 with refraction or scattering.In Fig. 3 A- Fig. 3 B
In, the vertically and horizontally edge 12c1 and 12c2 of detection pattern are corresponding with the recessed unit of the first detection pattern.However, detection
The vertically and horizontally edge not limited to this of pattern.Also by the first detection pattern 12a and the second detection pattern 12b integral edge
Vertical edge (parallel to Y-axis) or horizontal edge be described (parallel to X-axis).
Fig. 3 A- Fig. 3 B reference 16a is assigned to be formed between the first and second detection pattern 12a and 12b
Multiple island shape dummy pattern 16a in region.With reference to figure 2A, the first and second detection pattern 12a and 12b are adjacent to each other.
As shown in fig. 3, each pixel 22 formed on display panel (not shown) is rectangle.Work as touch screen panel
When plate is coupled on display panel, the vertically and horizontally edge of the pixel column of display panel and the detection pattern of touch panel
The possibility that the specific locations of 12c1 and 12c2 in one line are met is very big.Therefore, detected from light caused by pixel 22
Generation interference fringe is refracted in the vertical and/or horizontal edge of pattern.
In the present embodiment, in order to overcome the interference fringe the problem of, by vertical/water of the detection pattern of touch panel
Flat edge 12c1 and 12c2 is tilted by a predetermined angle α, so as to prevent the column (or row) of the pixel 22 of display panel to be arranged to and erect
Directly/horizontal edge 12c1 is parallel with 12c2.Shown in Fig. 3 B the detection pattern of touch panel vertical/horizontal edge 12c1 and
12c2。
The edge 12c1 and 12c2 of detection pattern are inclined by predetermined angular to eliminate vertically or horizontally component.This inclination makes
The number for obtaining pixel 22 overlapping on edge line minimizes, and minimizes the refraction of light and scattering.Therefore, can remove
Harmful interference fringe.
Inclined angle alpha can not be vertical nor horizontal.However, unless problematic when operating touch sensor,
Otherwise inclined angle alpha can be any angle.For example, by the axle offset of about 2-10 degree, observability can be reduced.
Optical interference and pattern between the detection pattern 12a and 12b of touch panel and the pixel 22 of display panel
Spacing is closely related.For example, when the spacing of pixel 22 is the arbitrary integer time of detection pattern 12a and 12b spacing, display surface
The pixel of plate and the detection pattern of touch panel repeat in identical opening position.Therefore, interference fringe produces, and may be
Human eye is identified.Interference fringe may show visual optical rules, i.e. moire pattern.
In the present embodiment, by the line space design of pixel 22 for be not detection pattern 12a and 12b spacing arbitrary integer
Times, so as to remove harmful interference fringe by the way that pixel and detection pattern are arranged as into random pattern.
However, in the embodiment shown in Fig. 3 A and Fig. 3 B, dummy pattern has square shape.In this case,
Dummy pattern 16a vertical/horizontal edge unit aligns (Fig. 3 A) with corresponding pixel 22, or dummy pattern 16a it is vertical/
The horizontal edge unit length overlapping with pixel becomes longer (Fig. 3 B).
In this case, as described above, can be by dummy pattern 16a vertical and/or water from light caused by pixel 22
Flat edge cells refraction, so as to produce interference fringe.
Therefore, in another embodiment, will describe to be optimized to the observability for improving the pixel corresponding with dummy pattern
Dummy pattern structure.
Fig. 4 A and Fig. 4 B are the sectional views for the structure for showing the dummy pattern according to another embodiment.
Fig. 4 A and Fig. 4 B show above-mentioned Fig. 3 dummy pattern region, i.e., with zoomed-in view identical region.
It is shown in Figure 4 according to the dummy pattern 16a ' of another embodiment.Dummy pattern 16a ' is realized so as to illusory figure
Case 16a ' length vertical and/or that horizontal edge unit is overlapping with pixel 22 is minimum.Therefore, dummy pattern 16a ' overcomes figure
The defects of dummy pattern 16a shown in 3.
The overlap length of dummy pattern and pixel 22 is minimized by dummy pattern 16a ' structure, so as to minimum
Change interference fringe.Interference fringe is caused by the edge cells refraction of dummy pattern by the light from pixel 22.
The vertical and/or horizontal edge unit of dummy pattern can tilt about from the arranged direction (X-axis or Y-axis) of pixel 22
10 degree to 80 degree.
Dummy pattern 16a ' can have triangular shaped, diamond shape, pentagon shaped and six deformed shapes.Fig. 4 A show
Going out dummy pattern 16a ' edge cells has about 45 degree of diamond shape.Fig. 4 B show that dummy pattern 16a ' has triangle shape
Shape.
Fig. 5 is the sectional view for the structure for showing the dummy pattern according to another embodiment.
Fig. 5 shows the dummy pattern region shown in Fig. 3 B, i.e., with zoomed-in view identical region.
It is shown in Figure 5 according to the dummy pattern 16a " of another embodiment.Dummy pattern 16a " is different from shown in Fig. 3 and Fig. 4
Embodiment.Dummy pattern 16a " is realized by multiple island shape dummy patterns, but is connected as adjacent first and the
Single main body between two detection pattern 12a and 12b.
Dummy pattern 16a " according to Fig. 5, between existing island shape dummy pattern 16a and 16a ' refraction difference and
The scattering of the light sent from the pixel 22 overlapping with dummy pattern 16a and 16a ' minimizes, so as to improve observability.
As summarizing and looking back, in the related art, the first and second detection patterns are formed within the same layer.First detection
Pattern or the second detection pattern are generally attached to the low resistive metal bridge pattern of separation.
In the touch panel of correlation technique, bridge pattern is realized by opaque metal.Therefore positioned at touch panel
When the pixel of the image display device of lower section is overlapping with connecting pattern, pixel is shielded.
The area of each pixel is as the resolution ratio of image display device gradually steps up and reduces.Therefore, hidden by bridge pattern
The number for the pixel covered may increase.Blackening is looked like according to visual angle by the pixel that bridge pattern covers.Therefore, it is outside visible
Property becomes worse.
According to the present embodiment, the first detection pattern arranged in a first direction being arranged in identical layer, cloth are being formed
When putting the second detection pattern in a second direction and the bridge pattern for the first or second detection pattern to be connected to each other, first
The area of detection pattern and the area of the second detection pattern are different from each other.It is thus possible to improve touch sensitivity.
In addition, vertical/horizontal edge unit of the first and second detection patterns formed on touch panel is with predetermined
Angle tilt is formed, and bar occurs for the pixel so as to prevent detection pattern and be arranged in the viewing area of panel display board
The interference of line form.Therefore, observability can be improved.
The structure for forming the dummy pattern in the region between the first and second adjacent detection patterns is optimized, from
And the observability of the pixel corresponding with dummy pattern can be improved.
There has been disclosed exemplary embodiment, and specific term despite the use of, but these terms are only with one
As property and descriptive sense explain, rather than limitation.Accordingly, those of ordinary skill in the art, which can understand, can carry out shape
A variety of changes in formula and in details.
Claims (10)
1. a kind of touch panel, including：
Multiple first detection patterns for being arranged on the long side direction of screen and being connected to each other, each first detection pattern
With polygonal shape and at least one recessed unit including being inwardly recessed from least one side of polygon；With
Multiple second detection patterns for being arranged on the short side direction of screen and being connected to each other, each second detection pattern
With polygonal shape and including the outstanding at least one protuberance at least one side from polygon, wherein：
Area in each first detection pattern is less than the area of each second detection pattern；
First detection pattern or second detection pattern are electrically connected on the same line by bridge pattern is electrically connected to phase
Adjacent detection pattern；
The bridge pattern is each in tilted layout with not on the long side direction for arranging first detection pattern or arrangement institute
State and alignd on the short side direction of the second detection pattern；
Wherein described first detection pattern and second detection pattern are located on the upper substrate of panel display board, further bag
Include：
Dummy pattern between first detection pattern and second detection pattern, wherein the dummy pattern includes
Multiple island shape dummy patterns, wherein the horizontal edge unit and vertical edge cells of the multiple island shape dummy pattern are implemented
For the horizontal edge unit and the edge cells vertically length overlapping with multiple pixels are minimum and wherein described more
Horizontal edge unit and the vertical edge of individual island shape dummy pattern, first detection pattern and second detection pattern
Unit has the angle for 10 degree to 80 degree of arranged direction for deviateing the pixel.
2. touch panel according to claim 1, wherein first detection pattern and second detection pattern
Vertically and horizontally edge tilt predetermined angular.
3. touch panel according to claim 2, wherein the scope of the predetermined angular is from 2 degree to 10 degree.
4. touch panel according to claim 1, wherein the bridge pattern is made up of low resistance opaque metal.
5. touch panel according to claim 1, wherein first detection pattern and second detection pattern by
Transparent conductive material is made.
6. touch panel according to claim 1, wherein at least one protuberance of second detection pattern
Including multiple protruding portion, and at least one recessed unit of first detection pattern includes multiple recessed units.
7. touch panel according to claim 1, wherein first detection pattern and the second detection pattern shape
Into in first detection pattern and second detection pattern with providing in the pixel region of the panel display board
Multiple pixels are in the region of overlapping relation, and the spacing of the pixel is not first detection pattern and described second
The arbitrary integer time of the spacing of detection pattern.
8. touch panel according to claim 1, wherein the dummy pattern by with first detection pattern and institute
The second detection pattern identical transparent conductive material is stated to be made.
9. touch panel according to claim 1, wherein the island shape dummy pattern has polygonal shape.
10. touch panel according to claim 1, wherein the dummy pattern is coupled to each other in the described first detection
Between pattern and second detection pattern.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2010-0080442 | 2010-08-19 | ||
| KR20100080442 | 2010-08-19 | ||
| KR1020110004977A KR101448250B1 (en) | 2010-08-19 | 2011-01-18 | Touch Screen Panel |
| KR10-2011-0004977 | 2011-01-18 | ||
| CN2011101603356A CN102375596A (en) | 2010-08-19 | 2011-06-07 | Touch screen panel |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011101603356A Division CN102375596A (en) | 2010-08-19 | 2011-06-07 | Touch screen panel |
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| Publication Number | Publication Date |
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| CN105302399A CN105302399A (en) | 2016-02-03 |
| CN105302399B true CN105302399B (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510731743.0A Active CN105302399B (en) | 2010-08-19 | 2011-06-07 | Touch panel |
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| Country | Link |
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| KR (1) | KR101448250B1 (en) |
| CN (1) | CN105302399B (en) |
| TW (1) | TWI545473B (en) |
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| TW201351245A (en) * | 2012-06-04 | 2013-12-16 | Wintek Corp | Touch-sensing electrode structure and touch-sensitive device |
| KR101931736B1 (en) | 2012-07-31 | 2018-12-26 | 삼성디스플레이 주식회사 | Display device integrated Touch Screen Panel |
| KR102101887B1 (en) * | 2012-10-05 | 2020-04-21 | 삼성디스플레이 주식회사 | Touch Screen Panel |
| KR102043847B1 (en) * | 2012-11-16 | 2019-11-13 | 엘지디스플레이 주식회사 | Electrostatic capacitive type touch screen panel |
| US9052766B2 (en) * | 2013-02-14 | 2015-06-09 | Synaptics Incorporated | Mesh sensor design for reduced visibility in touch screen devices |
| JP6308211B2 (en) * | 2013-03-27 | 2018-04-11 | 凸版印刷株式会社 | Touch panel |
| KR102068341B1 (en) * | 2013-07-10 | 2020-01-21 | 삼성디스플레이 주식회사 | Display device integrated Touch Screen Panel |
| KR102037515B1 (en) * | 2013-08-29 | 2019-10-28 | 엘지디스플레이 주식회사 | Electrostatic capacitive type touch-sensitive panel for display device |
| KR102232774B1 (en) | 2013-12-27 | 2021-03-26 | 삼성디스플레이 주식회사 | Touch panel and display device imcluding the same |
| KR102263312B1 (en) * | 2014-10-22 | 2021-06-10 | 엘지디스플레이 주식회사 | Touch panel and display device using the same |
| KR102267357B1 (en) | 2014-12-15 | 2021-06-21 | 삼성디스플레이 주식회사 | Touch sensor device |
| KR101739000B1 (en) | 2015-11-23 | 2017-05-23 | 동우 화인켐 주식회사 | Touch sensor |
| CN106647083B (en) * | 2017-02-27 | 2019-07-16 | 厦门天马微电子有限公司 | A kind of array substrate, liquid crystal display panel and touch control display apparatus |
| KR102324218B1 (en) | 2017-04-14 | 2021-11-10 | 삼성디스플레이 주식회사 | Touch sensor and display device having the same |
| CN209606950U (en) | 2017-08-22 | 2019-11-08 | 东友精细化工有限公司 | Touch sensor and image display including the touch sensor |
| CN111158516B (en) * | 2019-12-04 | 2021-06-25 | 武汉华星光电半导体显示技术有限公司 | Touch substrate and touch screen |
| KR102242036B1 (en) * | 2020-04-10 | 2021-04-21 | 삼성디스플레이 주식회사 | Touch Screen Panel |
| CN113126825B (en) * | 2021-05-13 | 2024-01-26 | 武汉天马微电子有限公司 | Display panel and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101448250B1 (en) | 2014-10-08 |
| KR20120018046A (en) | 2012-02-29 |
| TW201211856A (en) | 2012-03-16 |
| CN105302399A (en) | 2016-02-03 |
| TWI545473B (en) | 2016-08-11 |
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