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WO2016200069A1 - Dispositif de détection de toucher souple pour améliorer la visibilité - Google Patents

Dispositif de détection de toucher souple pour améliorer la visibilité Download PDF

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Publication number
WO2016200069A1
WO2016200069A1 PCT/KR2016/005158 KR2016005158W WO2016200069A1 WO 2016200069 A1 WO2016200069 A1 WO 2016200069A1 KR 2016005158 W KR2016005158 W KR 2016005158W WO 2016200069 A1 WO2016200069 A1 WO 2016200069A1
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WIPO (PCT)
Prior art keywords
sensor pads
column
pixel
pixels
signal wires
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Legal status (The legal status 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 status listed.)
Ceased
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PCT/KR2016/005158
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English (en)
Korean (ko)
Inventor
정익찬
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Crucialtec Co Ltd
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Crucialtec Co Ltd
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Publication date
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Publication of WO2016200069A1 publication Critical patent/WO2016200069A1/fr
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Definitions

  • the present invention relates to a touch detection device, and more particularly, to a flexible touch detection device for improving visibility through a dispersion technique of column electrodes according to pixel spacing.
  • the touch screen panel is a device for inputting a user's command by touching a character or a figure displayed on a screen of the image display device with a human finger or other contact means, and is attached to and used on the image display device.
  • the touch screen panel converts a contact position touched by a human finger or the like into an electrical signal, and the converted electrical signal is used as an input signal.
  • the capacitive touch panel converts a contact position into an electrical signal by detecting a change in capacitance that a conductive sensing pattern forms with other surrounding sensing patterns or ground electrodes when a human hand or an object comes in contact.
  • 1 is an exploded plan view of a conventional touch detection device.
  • the touch detection device shown in FIG. 1 includes a touch panel 20, a driving device 30, and a circuit board 40 connecting the two.
  • the touch panel 20 includes a plurality of sensor pads 22 formed on the substrate 21 and arranged in a polygonal matrix form and connected to the sensor pads 22.
  • Each signal wire 23 has one end connected to the sensor pad 22 and the other end extending to the lower edge of the substrate 21.
  • the sensor pad 22 and the signal wire 23 may be patterned on the cover glass 50.
  • the driving device 30 sequentially selects the plurality of sensor pads 22 one by one to measure capacitance of the corresponding sensor pad 22, and detects whether a touch occurs.
  • the touch detection device may be stacked on or embedded in the display device, and the display device may include a backlight, a polarizer, a substrate, a liquid crystal layer, a pixel layer 60, and the like. Among these, the pixel layer 60 related to the embodiment of the present invention will be described.
  • the pixel layer 60 refers to a color filter formed on the surface (upper surface or lower surface) of the liquid crystal layer for displaying an image, and is a liquid crystal display device in units of red, green, and blue pixels. To implement color (hereinafter, red, green, and blue are referred to as R, G, and B).
  • the pixel layer 60 includes a plurality of pixels 61 including subpixels of R 61-1, G 61-2, and B 61-3.
  • the liquid crystal layer has a structure including an upper substrate, a lower substrate, and a liquid crystal, and generates light and shade to display an image by modulating light (for example, an arrow shown in FIG. 1) from the backlight.
  • the touch screen panel 20 is disposed in a structure in which each signal line 23 is connected to the bottom edge of the substrate 21, so that the touch screen panel 20 is disposed between the sensor pad 22 and the signal line 23.
  • the sensor pads 22 located at the top one signal wire is arranged to be connected downward, so that the distance between the sensor pad 22 and the signal wire 23 is wide, while the sensor pad 22 is located at the bottom.
  • the pads 22 since the signal wires 23 connected to the sensor pads 22 located at the top are all disposed in the adjacent area, the distance between the sensor pads 22 and the signal wires 23 is at the top. It becomes relatively narrower than (22).
  • the distance between the sensor pad 22 and the signal wire 23 may be formed differently according to the arrangement positions of the sensor pads 22, so that the diffuse reflectance of the light emitted from the backlight may cause a difference for each region. This results in deterioration of visibility from the user's point of view using the touch panel 20.
  • FIG. 2 is an enlarged view of a portion of an upper surface of a conventional touch display device.
  • the touch detection device shown in FIG. 1 is stacked on a conventional display device, the pixel layer 60 and the signal wire 23 are selected. This is an enlarged view of the upper surface of the two.
  • the pixel layer 60 includes a plurality of pixels 61 formed in a plurality of rows and columns, and each pixel 61 includes a plurality of subpixels.
  • the signal lines 23 may be regarded as being arranged in parallel with each other in the column direction on the pixel layer 60.
  • each signal wire 23 is disposed so as to overlap a part of the pixel 61.
  • the signal wire 23 may include a portion of the R subpixel 61-1 and the G subpixel 61-2 that constitute the pixel 61. Overlap with the whole.
  • the signal wire 23 may be a portion of the R subpixel 61-1, which is a pixel 61, of the G subpixel 61-2. Part and part of the B subpixel 61-3.
  • each pixel 61 is changed according to the light transmittance of the signal wire 23 superimposed on each pixel 61. There is a difference in the color temperature generated. Therefore, color deviation may occur at an arbitrary position, and a pattern such as a Newton ring scattered by iridescent light may be generated in the front surface or in some sections of the touch panel, and thus may be visually recognized.
  • the present invention has been made to solve the above-mentioned problems of the related art, and an object thereof is to improve visibility of a touch screen panel through a dispersion technique of column electrodes according to inter-pixel spacing.
  • Still another object of the present invention is to make it easy to apply a design technique of a touch screen panel for improving visibility to pixel structures of various displays.
  • an embodiment of the present invention is a touch detection device stacked on top of a pixel layer consisting of a plurality of pixels arranged in a plurality of rows and columns, a plurality of rows and columns A plurality of sensor pads arranged to form a plurality of slits formed with a plurality of slits extending in a column direction; And a plurality of signal wires extending from the plurality of sensor pads in the column direction, wherein a part of the sensor pads are spaced apart from each other on a straight line passing through the slit and extending in the row direction.
  • the number of column electrodes including a part of the signal wires is provided as a touch detection device formed by an integer multiple of the number of pixel in the row direction of the pixel layer.
  • the width of the column electrode and the distance between the column electrode provides a touch detection device is formed to be constant.
  • the intervals and widths between the slits of the touch detection apparatus may be equal to the widths of the signal wires and the distances between the signal wires, respectively.
  • the widths of the plurality of sensor pads may be increased in inverse proportion to the number of signal wires arranged in a gap with adjacent sensor pads.
  • the distance between each of the plurality of sensor pads and adjacent signal wires provides the same touch detection device.
  • the number of column electrodes disposed in an area corresponding to the interval between pixels is a touch detection device implemented as a value obtained by subtracting a value obtained by dividing the interval between pixels by the sum of the minimum width and the minimum interval of the column electrodes. to provide.
  • the pixel-to-pixel spacing provides a touch detection device having a minimum spacing between subpixels of the same kind.
  • the number of column electrodes disposed in a region corresponding to the interval between subpixels constituting the pixel is a value obtained by subtracting the value obtained by dividing the interval between the subpixels by the sum of the minimum width and the minimum interval of the column electrode.
  • a touch detection device that doubles an integer.
  • the plurality of signal wires extending from the sensor pads disposed in the same column may be provided to be divided in two directions extending from the sensor pads.
  • the touch detection apparatus may include signal wires extending from the sensor pads arranged in a first row extending to one side based on the sensor pads, and signal wires extending from the sensor pads arranged in a second row adjacent to the first row.
  • the sensor pad is extended to the other side with respect to the sensor pad.
  • visibility of the touch screen panel may be improved through a columnar electrode dispersion technique based on the pixel-to-pixel spacing.
  • the design pattern of the column direction electrode for color deviation removal can be grasped based only on the pixel specification information of the display device, it is possible to easily design the touch screen panel with improved visibility.
  • the columnar electrode dispersion technique according to the embodiment of the present invention is applicable to the flexible touch detection apparatus.
  • 1 is an exploded plan view of a conventional touch detection device.
  • FIG. 2 is an enlarged view of a portion of an upper surface of a conventional touch display device.
  • FIG 3 is an exploded plan view of a touch detection apparatus according to an exemplary embodiment.
  • 4A to 4C are enlarged views of a part of an upper surface of the touch display device of FIG. 3.
  • FIG. 5 is an exploded plan view of a touch detection apparatus according to an embodiment of the present invention.
  • FIG. 6 is an exploded plan view of a touch detection apparatus according to another exemplary embodiment of the present invention.
  • FIG. 7 illustrates a structure of a pixel layer of a touch display device according to an embodiment of the present invention.
  • FIG. 8 is an enlarged view of a portion of an upper surface of the touch display device of FIG. 7 including an arrangement of column electrodes according to an exemplary embodiment.
  • 9 is a graph illustrating color deviation generation according to the difference between the number of pixels and the number of column electrodes.
  • FIGS. 10A to 10D are diagrams illustrating a structure of a pixel layer according to another exemplary embodiment of the present invention.
  • FIG. 3 is a plan view illustrating a configuration of a touch screen panel of a touch detection apparatus according to an embodiment.
  • the touch screen panel 100 includes a plurality of sensor pads 110 arranged in a plurality of rows and columns, and a plurality of sensor pads connecting the sensor pads 110 to a driving device (not shown). And a signal wire 120.
  • each sensor pad 110 forms an angle with respect to the column direction
  • each signal wire 120 also forms a certain angle with respect to the column direction of the sensor pad 110 and is bent. have.
  • the signal wire 120 extends through the gap between the columns of the sensor pads 110 and is formed in parallel with one side of the adjacent sensor pads 110 in the extension path. If the sensor pads 110 adjacent in the column direction have a symmetrical shape with respect to a straight line parallel to the row direction, the signal wire 120 may extend in a sawtooth shape by repeatedly bending.
  • FIG. 4A to 4C illustrate a form in which the touch screen panel 100 of FIG. 3 is stacked on the pixel layer, and a part of the touch screen panel 100 is illustrated in detail.
  • 4A and 4B are diagrams illustrating a case where the pixel layer is composed of pixels 300 arranged in an RGB stripe manner and pixels 300 arranged in a mosaic manner.
  • each pixel 300 includes a plurality of subpixels, for example, an R subpixel 300-1, a G subpixel 300-2, and a B subpixel ( 300-3).
  • the RGB stripe scheme shown in FIG. 4A has the same subpixel arrangement in each pixel 300. That is, in all the pixels 300, the subpixels are arranged in the order of R 300-1, G 300-2, and B 300-3.
  • the signal wires 120 are arranged at an angle with respect to the column direction as shown in FIG. 3, color temperature variation of each area can be reduced, and visibility can be improved.
  • the area occupied by the B (300-3) subpixels becomes equal. In other words, the color distribution is balanced.
  • the area occupied by each subpixel becomes the same even in the portion (b) where the pixel 300 and the signal wiring 120 do not overlap.
  • FIG. 5 is an exploded plan view of a touch detection apparatus according to an embodiment of the present invention.
  • the touch detection apparatus includes a touch screen panel 100 and a driving device 200.
  • the touch screen panel 100 may include a plurality of sensor pads 110 arranged to form a plurality of rows and columns.
  • the plurality of sensor pads 110 may have a polygonal shape and may be arranged in a matrix form.
  • Each sensor pad 110 is a patterned electrode on a substrate for detecting a touch input to form a touch capacitance Ct in a relationship with a touch input tool such as a finger or a conductor to sense a touch.
  • the touch capacitance Ct refers to a capacitance formed between the sensor pad 110 and the touch input tool when a touch occurs.
  • the plurality of sensor pads 110 may be formed on a substrate, and each of the sensor pads 110 may be electrically connected to the driving device 200 through the signal wire 120.
  • the substrate may be in the form of a glass or plastic film of a transparent material.
  • the line width of the signal wire 120 may be formed to be very narrow, ranging from several micrometers to several tens of micrometers.
  • the sensor pad 110 and the signal wire 120 may be made of the same material.
  • the sensor pad 110 is a transparent conductive material such as indium-tin-oxide (ITO)
  • the signal wire 120 may also be formed of the same material.
  • the sensor pad 110 and the signal wire 120 may be formed of indium-tin-oxide (ITO), antimony tin oxide (ATO), indium-zinc-oxide (IZO), carbon nanotube (CNT), and graphene (graphene). It may be made of a transparent conductive material such as.
  • the light transmission area of the area where the sensor pad 110 is disposed and the light transmission area of the area where the signal wire 120 is disposed must match.
  • each of the sensor pads 110 may be spaced apart at regular intervals, and a plurality of slits 130 may be formed in parallel with an extension direction of the signal wire 120, that is, in a column direction of the sensor pad 110.
  • each slit 130 may be formed in a shape extending from one end to the other end of the sensor pad 110.
  • the slits 130 in the sensor pad 110 may be separated through one or more bridges (not shown) to include an upper slit and a lower slit.
  • the width of the slits 130 formed in the sensor pad 110 may be formed to be equal to the distance between the signal wires 120.
  • the minimum distance between two adjacent slits 130 in each sensor pad 110 may be formed to be equal to the width of the signal wire 120.
  • each of the signal wires 120 may have the same width as that of the region overlapping the pixel 300 and the width of each region overlapping the pixel 300 in the sensor pad 110.
  • the width of the light transmission region due to the gap between the adjacent signal lines 120 and the light transmission region due to the slit in the sensor pad 110 may be the same. In other words, the region where the sensor pad 110 is disposed and the region where the signal wiring 120 is disposed are implemented in the same pattern.
  • the size of the sensor pad 110 may be formed differently according to the position.
  • the driving device 200 is disposed on one side of the touch screen panel 100, and each sensor pad 110 is connected to the driving device 200 through the signal wire 120, thereby driving the driving device ( A relatively large number of signal wires 120 may be disposed between the 200 and adjacent sensor pads 110.
  • the width of the sensor pad 110 is relatively increased as the distance from the driving device 200 increases. That is, the width of the corresponding sensor pad 110 is increased so as to be inversely proportional to the number of signal wires 120 arranged in the gap with the adjacent sensor pad 110.
  • the width of the sensor pads 110 is from one row to four rows. It can be formed narrower.
  • the distance between the sensor pad 110 and the signal line 120 adjacent to each other may be the same in all rows.
  • the corresponding interval is equal to the interval between the signal wires 120, assuming a straight line A-A 'in the row direction passing through the slit 130 of the sensor pad 110, the plurality of wires having the same width may be provided.
  • the column electrodes may be the same as the ones spaced apart at regular intervals, and in this case, the light transmission area characteristics of all the regions of the touch screen panel 100 may be uniform.
  • the sensor pad 110 and the signal wire 120 existing on the line A-A 'in the row direction passing through the slit 130 of the sensor pad 110 will be considered to be spaced apart from each other. Possible electrodes are referred to as 'column electrodes'. Even though the column electrodes are spaced apart from each other on the straight line A-A 'in the row direction passing through the slit 130, they may be electrically connected to each other on the other straight line.
  • the signal wire 120 may be extended to one side based on each sensor pad 110 as shown in FIG. 5, the signal wire 120 connected to the sensor pads 110 belonging to the same column. They may be divided and extended based on the sensor pads 110. Specifically, the sensor pads 110 may be alternately extended to the left and right sides based on the sensor pads 110 in the row.
  • the signal wires 120 extending from the sensor pads 110 in the first row extend to the right with respect to each sensor pad 110 and are disposed from the sensor pads 110 in the adjacent second row.
  • the extending signal lines 120 may extend to the left with respect to each sensor pad 110.
  • the number of signal wires 120 existing on the left and right sides of the sensor pads 110 arranged in the same column is balanced.
  • the center of gravity is May coincide with the column direction.
  • the touch generation point is determined to be the center of gravity of the sensor pad 110.
  • a straight line connecting the centers of gravity of the sensor pads 110 arranged in the same row has a column direction. If parallel, accuracy and area balance in touch detection can be secured.
  • the driving device 200 may include a touch detector 210, a touch information processor 220, a memory 230, a controller 240, and the like, and may be implemented as one or more integrated circuit (IC) chips.
  • the touch detector 210, the touch information processor 220, the memory 230, and the controller 240 may be separated from each other, or two or more components may be integrated.
  • the touch detector 210 may include a plurality of switches and a plurality of capacitances connected to the plurality of sensor pads 110 and the plurality of signal wires 120, respectively, and receive a driving control signal from the controller 240. It drives and outputs the voltage corresponding to a touch detection result.
  • the touch detector 210 may further include an amplifier and an analog-to-digital converter, and may convert, amplify, or digitize the difference in the voltage change of each sensor pad 110 and store the same in the memory 230.
  • the touch information processor 220 processes the digital voltage stored in the memory 230 to generate necessary information such as whether or not it is touched, a touch area, and touch coordinates. For example, the touch information processor 220 may output a result of comparing the output value output from the touch detector 210 with the digital voltage stored in the memory 230 in response to the driving control signal of the controller 240. .
  • the memory 230 stores digital voltages and predetermined data used for touch detection, area calculation, and touch coordinate calculation or data received in real time based on the difference in the voltage change detected by the touch detector 210.
  • the controller 240 controls the touch detector 210 and the touch information processor 220, and may include a micro control unit (MCU), and performs a predetermined signal processing through firmware. can do.
  • MCU micro control unit
  • FIG. 6 is a diagram illustrating a touch detection device according to another embodiment of the present invention.
  • the sensor pad 110 is divided into three parts, the upper sub pad 110_1, the middle sub pad 110_2, the lower sub pad 110_3.
  • the central sub pad 110_2 is formed in a quadrangular shape, and the upper sub pad 110_1 and the lower sub pad 110_3 are electrically connected to each other in an up and down direction in a column direction when the central sub pad 110_2 is formed in a quadrangular shape. Are connected and placed.
  • the upper sub pad 110_1 and the lower sub pad 110_3 are formed in a shape including a plurality of bars whose length direction is parallel to the column direction. That is, at least one side of the sensor pad 110 may be formed of a plurality of bar strips extending in the column direction.
  • the upper subpad 110_1 and the lower subpad 110_3 are illustrated as including three bars, respectively, but may be formed in two or four or more bar shapes.
  • the upper sub pad 110_1 and the lower sub pad 110_3 are formed in a bar shape
  • the upper sub pad 110_1 and the lower sub pad 110_3 may overlap with other sensor pads 110 neighboring in the column direction in an electrically insulated state.
  • the sensor pads 110 adjacent to each other in the column direction may be arranged such that the bar strips are insulated from each other.
  • the bar strips of the upper sub pad 110_1 are coplanar with each other to form the bar strips forming the lower sub pads of the other sensor pads adjacent to the top in the column direction with the corresponding sensor pad 110.
  • the bar-shaped strips of the lower subpad 110_3 are mutually insulated from the bar-shaped strips forming the upper subpad of the other sensor pad adjacent to the bottom in the column direction with the corresponding sensor pad 110. Can interlock in the same plane.
  • the engagement of the first subpad with the second subpad should be understood to mean that the bar strips constituting the second subpad are disposed at a distance between the bar strips constituting the first subpad.
  • the sum of the column lengths covered by the sensor pad 110 may correspond to the sensor pad ( It is formed relatively large compared to the width in the row direction of 110.
  • the length of the column in the sensor pad 110 is relatively long, some regions of the sensor pad 110 which are vertically adjacent to each other overlap, and when touch occurs, between the magnitudes of the touch generation signals detected through the respective sensor pads 110. Since the difference occurs, it is possible to accurately detect the touch generation point using this.
  • the groove h and the slit l may be formed in the sensor pad 110.
  • the groove (h) is formed in the longitudinal direction on at least a portion of the edge of the sensor pad 110, the slit (l) is formed in the same width as the groove (h), formed in the longitudinal direction inside the sensor pad (110). Will be.
  • the slit l and the groove h may be formed in a straight line such that both ends thereof are adjacent to each other.
  • the slit l and the groove h play the same role as the slit 130 described with reference to FIG. 5. That is, since the slit 1 and the groove h are formed, the light transmission characteristic difference between the region where the signal line 120 is disposed and the region where the sensor pad 110 is disposed may be eliminated.
  • FIG. 7 is a diagram illustrating a pixel layer configuring a display device together with a touch screen panel.
  • the pixel layer 400 is disposed under the touch screen panel. That is, the touch screen panel is disposed to cover the pixel layer 400.
  • An interval P between the unit pixels 300 refers to an interval between the centers of gravity of adjacent unit pixels 300, which is equal to the width of each pixel 300.
  • FIG. 8 is a diagram illustrating a case in which the touch screen panel described with reference to FIGS. 5 and 6 is stacked on the pixel layer of FIG. 7.
  • FIG. 8 illustrates an example of an RGB stripe pixel arrangement in which an R subpixel 300-1, a G subpixel 300-2, and a B subpixel 300-3 are gathered together.
  • the pixel 300 is formed.
  • the pixel 300 arranged in various ways is also applicable.
  • the column electrodes 500 disposed on the pixel layer mean electrodes that are spaced apart from each other on a straight line passing through the slit of the sensor pad.
  • the column electrode 500 may be part of the sensor pad or part of the signal wiring. Since the light transmission area pattern is the same in all areas on the touch screen, the column electrode 500 may be part of any component. , The same pattern as shown in FIG. 8 can be represented.
  • the width L of the column electrode 500 may be the width of the fragment electrode divided by the slit in the sensor pad, or may be the width of the signal wire 120.
  • the interval S between the column electrodes 500 may be the width of the slit, or may be the interval between the signal wires 120.
  • the total number of the column electrodes 500 is an integer multiple of the number N of the pixels 300 arranged in the row direction. Accordingly, the number of column electrodes 500 overlapping each other and the overlapping pattern may be the same in all pixel 300 areas.
  • the total number of the column electrodes 500 is twice the number of the row pixels 300, and the number of the column electrodes 500 overlapping in all the pixels 300 is the same.
  • the first R subpixel 300-1 in all the pixels 300 overlaps the column electrode 500
  • the right half region of the second G subpixel 300-2, The left half of the third sub-pixel 300-3 overlaps the column electrode 500 together.
  • each pixel 300 is divided into three columns. It overlaps with the directional electrode 500. However, even in this case, the total width of the width overlapping the column electrode 500 in each pixel 300 is the same as the example illustrated in FIG. 8.
  • the total number of the column electrodes 500 when the total number of the column electrodes 500 is n times (n is an integer of 1 or more) of the number N of the pixels 300 arranged in the row direction, the total number of the column electrodes 500 overlaps each pixel 300.
  • the number of the column electrodes 500 is n or n + 1, and the sum of the widths of the column electrodes 500 overlapping the width L of the column electrodes 500 and n of all the pixels 300 is equal to n. Is equal to the product.
  • each pixel 300 is formed of the first to Mth subpixels according to the arrangement order regardless of color, the first to Mth subpixels and the column electrode 500 in all the pixels 300. This overlapping pattern becomes the same.
  • the arrangement number of the column electrodes 500 may be determined by the following process. First, after determining the minimum width L of the column electrode 500 and the minimum distance S between the column electrode 500, the width of the pixel 300 is divided by a value of L + S. If the division does not fall to an integer, round it down. The lowered value is the number n of the column electrodes 500 disposed in an area corresponding to the width of the unit pixel 300. This is expressed as an equation.
  • n [P / (L + S)]
  • n is the largest integer not exceeding P / (L + S).
  • the column electrode 500 is positioned in the area corresponding to the width of the unit pixel 300. ) May be disposed, and the value obtained by dividing the remaining area by 2 may be determined as the interval between the column electrodes 500.
  • 9 is a view for explaining visibility according to the number of pixels and the number of column electrodes.
  • FIG. 9 is a graph illustrating transmittance according to the number difference between the number of pixel in the row direction and the number of column electrodes, assuming that the sensor pad and the signal wiring are formed of an ITO material.
  • the vertical axis represents the transmittance of an electrode made of ITO, that is, a sensor pad or a column electrode that is part of a signal wiring
  • the horizontal axis is a value obtained by multiplying the number N of pixels arranged in the row direction by an integer n of 1 or more.
  • the difference (number of n x N-column electrodes) of the number of column electrodes arranged on the pixel layer of the display device is shown.
  • the number of occurrences of color deviation is equal to the number of times a deviation occurs between the interval between pixels and the interval between column electrodes.
  • the number of pixels with deviations in the position and area overlapping with the column electrodes is equal to the number of occurrences of color deviation.
  • the number of color deviation occurrences on the display device has the same value as the number of (n ⁇ N) -column electrodes.
  • the value of the '(n ⁇ N) -column number of electrodes' is designed to be zero, the number of wrinkles, patterns, or color deviations that can be visually identified on the display device is also zero.
  • the visually identifiable color deviation decreases as the transmittance of the column electrode of ITO material increases and decreases as the value of '(n ⁇ N) -column electrode number' approaches 0. Able to know. In addition, it can be seen that if the value of (n ⁇ N) -column number of electrodes' becomes 0, color deviation can be eliminated irrespective of the column electrode transmittance of the ITO material.
  • the number of column electrodes is constituted by an integer multiple n of the total number of pixels, color deviation can be eliminated in the display device.
  • the arrangement position between the touch detection device including the column electrode and the pixel layer may change little by little in the process, so that the value of (n ⁇ N)-number of column electrodes is '0'. If designed, the same luminance difference or color difference will occur on all pixel layers, so that visually identifiable color deviation can be eliminated.
  • FIGS. 10A to 10D are diagrams illustrating a structure of a pixel layer according to another exemplary embodiment of the present invention.
  • a design may be performed in the same manner as the RGB stripe method described with reference to FIG. 8.
  • all pixels are composed of three subpixels of R (1000-1), G (1000-2), and B (1000-3), and each subpixel within each pixel is merely a row.
  • the order of pixel placement varies regularly.
  • the types of subpixels overlapping with the column electrodes are different for each column. Since the different patterns are regular, there is no visible color deviation on the entire pixel layer.
  • FIG. 10B illustrates a pixel array of a pentile RGBW method.
  • each pixel is divided into an R subpixel (1000-1), a G subpixel (1000-2), a B subpixel (1000-3), and a W subpixel (1000-4). Is done.
  • the pentile RGBW pixel array includes a W subpixel 1000-4 to improve overall brightness.
  • the number of pixels is replaced with the number of subpixels in the method described with reference to FIG. 8, that is, the total number of column electrodes is n times the number of pixels arranged in the row direction, the overlapping pattern of the column electrodes between each pixel. This can be made more uniform. Therefore, in FIG. 10B, a design method of the column electrode is described based on the number of subpixels.
  • the width of the pixel layer is X and the total number of row-direction pixels 300 is N, the total number of subpixels forming one row is 4 ⁇ N.
  • the interval P / 4 between adjacent subpixels is X / (4 ⁇ N).
  • 10C and 10D show pixel arrays of the pentile RGBG method.
  • the pixel-to-pixel spacing In order to design the column electrodes on the pixel layer, the pixel-to-pixel spacing must first be defined.
  • the spacing between pixels can be defined as the spacing between subpixels having the same color.
  • the spacing between R subpixels (1000-1), the spacing between G subpixels (1000-2), and the B subpixel (1000- 3) The intervals are all different. Since it is preferable to refer to the minimum interval among these, it can be selected based on the interval between the G subpixel (1000-2).
  • the number N of pixels arranged in the row direction is equal to the total number of G subpixels 1000-2 arranged in the row direction, and the spacing P between the G subpixels 1000-2 is X /. N becomes.
  • one or more intervals for each interval (P X / N) between each G subpixel 1000-2.
  • the column electrodes can be arranged uniformly.
  • the width of the column electrodes and the distance between the column electrodes are determined based on the pixel specification information, thereby making it possible to implement a display device without color deviation even in various pixel arrangements.
  • a method for improving visibility by columnar electrode arrangement may be incorporated into a flexible touch detection device.
  • control unit 240 control unit

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Position Input By Displaying (AREA)

Abstract

La présente invention concerne, conformément à un mode de réalisation, un dispositif de détection de toucher souple pour améliorer la visibilité. Un mode de réalisation de la présente invention concerne un dispositif de détection de toucher qui est empilé sur la partie supérieure d'une couche de pixels comprenant une pluralité de pixels disposés selon une pluralité de rangées et de colonnes, le dispositif de détection de toucher comprenant : une pluralité de plots de capteur qui sont disposés selon une pluralité de rangées et de colonnes et comportent une pluralité de fentes s'étendant dans la direction de colonne formée dans ceux-ci ; une pluralité de fils de signal qui s'étendent dans la direction de colonne à partir de chacun de la pluralité de plots de capteur, le nombre d'électrodes dans la direction de colonne étant formé dans des multipôles entiers du nombre de pixels dans la direction de rangée sur la couche de pixels, les électrodes dans la direction de colonne comprenant certains des plots de capteur ou certains des fils de signal qui sont espacés les uns des autres le long d'une ligne droite passant à travers les fentes et s'étendant dans la direction de rangée.
PCT/KR2016/005158 2015-06-09 2016-05-16 Dispositif de détection de toucher souple pour améliorer la visibilité Ceased WO2016200069A1 (fr)

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KR1020150081511A KR101687218B1 (ko) 2015-06-09 2015-06-09 시인성 개선을 위한 플렉서블 터치 검출 장치

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