WO2018086274A1 - 触控组件、显示面板及制造触控组件的方法 - Google Patents

触控组件、显示面板及制造触控组件的方法 Download PDF

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Publication number
WO2018086274A1
WO2018086274A1 PCT/CN2017/074764 CN2017074764W WO2018086274A1 WO 2018086274 A1 WO2018086274 A1 WO 2018086274A1 CN 2017074764 W CN2017074764 W CN 2017074764W WO 2018086274 A1 WO2018086274 A1 WO 2018086274A1
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WO
WIPO (PCT)
Prior art keywords
touch
touch electrode
electrode portion
substrate
period
Prior art date
Application number
PCT/CN2017/074764
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English (en)
French (fr)
Inventor
郭远辉
李润复
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/742,882 priority Critical patent/US10481715B2/en
Publication of WO2018086274A1 publication Critical patent/WO2018086274A1/zh

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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
    • G06F3/0412Digitisers structurally integrated in a display
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/13338Input devices, e.g. touch panels
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133514Colour filters
    • 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
    • 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
    • G06F3/042Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel
    • 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
    • G06F2203/04103Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40OLEDs integrated with touch screens

Definitions

  • Embodiments of the present disclosure relate to the field of display technologies, and in particular, to a touch component, a display panel, and a method of manufacturing the touch component. Background technique
  • the structure of the touch display panel generally includes three types: one is an Out Cell Touch Panel whose touch screen is independent of the display screen, and is an in-cell touch screen in which the touch component is disposed inside the display panel (In Cell Touch) Panel), there is also a surface touch panel (On Cell Touch Panel) in which the touch component is disposed on the surface of the display panel.
  • Out Cell Touch Panel whose touch screen is independent of the display screen
  • On Cell Touch Panel a surface touch panel in which the touch component is disposed on the surface of the display panel.
  • the surface touch screens have become mainstream touch solutions due to their low cost, thin products, and low light impact.
  • the light transmittance of the inclined side region at the taper position of the touch electrode is lower than that of the flat surface region of the touch electrode.
  • the overshoot rate causes a difference in brightness, so light and dark streaks are produced.
  • the arrangement period of the glass surface touch electrode (for example, made of ITO (indium tin oxide)) is similar to that of the pixel electrode, the light and dark stripes in the touch electrode layer are formed (the dark stripes are formed at the slope angle, and other portions are formed).
  • the present disclosure is directed to a method of manufacturing a touch component, a display panel, and a touch component to improve the phenomenon of light and dark streaks and moiré of a surface touch screen product.
  • a touch control assembly includes: a substrate and a plurality of touch electrodes.
  • Each of the touch electrodes includes a first touch electrode portion and a plurality of second touch electrode portions disposed on the first touch electrode portion, wherein the first touch electrode portion is disposed on the substrate at a first periodic interval.
  • the second touch electrode portions are disposed on each of the first touch electrode portions at a second period interval, and the second period is smaller than the first period.
  • the period of the first touch electrode portion is 2-10 times of the period of the second touch electrode portion.
  • each of the first touch electrode portion and the second touch electrode portion has a trapezoidal cross section, and the oblique side of the trapezoidal cross section of the first touch electrode portion and the second touch The positions of the oblique sides of the trapezoidal cross section of the electrode portion are shifted from each other.
  • the width of the horizontal projection of each oblique side of the trapezoidal cross section of the first touch electrode portion on the substrate is equal to each oblique side of the trapezoidal cross section of the second touch electrode portion. The width of the horizontal projection on the substrate.
  • the first touch electrode portion and the second touch electrode portion may be arranged such that each oblique side of the trapezoidal cross section of the first touch electrode portion and the second touch electrode portion The horizontal projection of each oblique side of the trapezoidal cross section on the substrate is evenly distributed.
  • each of the first touch electrode portion and the second touch electrode portion has a thickness equal to half of the light passing through the first touch electrode portion or the second touch electrode portion. A multiple of the wavelength.
  • the first touch electrode portion and the second touch electrode portion form a unitary structure.
  • An embodiment of another aspect of the present disclosure provides a display panel including the touch assembly of the embodiments of the first aspect.
  • the period of the pixel electrode in the display panel is 1-3 times the period of the first touch electrode portion.
  • the display panel further includes: an OLED panel, wherein the touch component is formed on the OLED panel.
  • An embodiment of the present disclosure provides a method for manufacturing a touch component, including the steps of: providing a substrate; and forming a plurality of touch electrodes on the substrate such that each touch electrode includes a first touch electrode portion and is disposed at a plurality of second touch electrode portions on the first touch electrode portion, wherein the first touch electrode portions are disposed on the substrate at a first periodic interval, and the second touch electrode portions are disposed at the first interval at a second interval On the touch electrode portion, the second period is smaller than the first period.
  • the forming a plurality of touch electrodes on the substrate includes: forming a first touch electrode layer on the substrate, the first touch electrode layer including a plurality of the first touch electrodes And forming a second touch electrode layer on the first touch electrode layer, and the second touch electrode layer includes a plurality of the second touch electrode portions.
  • the first touch electrode layer is patterned by a first photolithography process to form a plurality of the first touch electrode portions
  • the second photomask is patterned by a second photolithography process.
  • a second touch electrode layer to form a plurality of the second touch electrode portions.
  • the forming a plurality of touch electrodes on the substrate includes: forming an electrode layer having a uniform thickness on the substrate; and patterning the electrode layer such that the electrode layer forms a plurality of the first a touch electrode portion and a plurality of the second electrode portions.
  • the patterned electrode layer may include: patterning the electrode layer by one photolithography process using a halftone mask.
  • a stacked first touch electrode portion and a second touch electrode portion are provided on a substrate instead of a conventional touch electrode.
  • the arrangement period of the second touch electrode portion is smaller than the arrangement period of the first touch electrode portion, thereby increasing the frequency of the touch electrode on the surface of the substrate, and improving the light and dark stripe phenomenon and moiré of the touch display panel phenomenon.
  • FIG. 1A is a schematic plan view of a touch component according to an embodiment of the present disclosure
  • FIG. 1B is a schematic cross-sectional view of the touch component taken along line A-A' of FIG. 1A;
  • FIG. 1C is a schematic view showing a dimensional relationship in a cross section of the touch component shown in FIG. 1B;
  • FIG. 2 is a schematic cross-sectional view of a display panel in accordance with an embodiment of the present disclosure
  • FIG. 3 is a schematic cross-sectional view of a display panel in accordance with another embodiment of the present disclosure.
  • FIG. 4 is a schematic cross-sectional view of a display panel in accordance with still another embodiment of the present disclosure.
  • FIG. 5 is a diagram of a process of a method of fabricating a touch component in accordance with an embodiment of the present disclosure
  • FIG. 6 is a diagram of a process of a method of fabricating a touch component in accordance with another embodiment of the present disclosure; a simulation of the light and dark stripes produced by the display panel;
  • Fig. 8 shows the relationship between the level of the moiré generated by the display panel and the number of the second touch electrode portions.
  • orientation terms “upper”, “lower”, “left”, “right”, “top” or “bottom” as used herein are used to refer to the orientations shown in the drawings. These orientation terms are for convenience only. The description is not to be construed as limiting the disclosure.
  • FIG. 1A is a schematic plan view of a touch component according to an embodiment of the present disclosure.
  • FIG. 1B is a schematic cross-sectional view of the touch assembly shown in FIG. 1A along AA′.
  • the touch component 100 includes a substrate 10 and a plurality of touch electrodes disposed on the substrate 10.
  • Each touch electrode includes a first touch electrode portion 11 and a first touch electrode portion.
  • the plurality of first touch electrode portions 11 are disposed at intervals of the first period L1
  • the plurality of second touch electrode portions 12 are disposed on each of the first touch electrode portions 11 at intervals of the second period L2, and the second period L2 is smaller than The first period Ll.
  • the first period L1 of the first touch electrode portion 11 may be approximately 50 ⁇ m, and the second period L2 of the second touch electrode portion 12 may be approximately 10 ⁇ ⁇ .
  • the substrate 10 may be a glass substrate.
  • the first touch electrode portion 11 and the second touch electrode portion 12 may be made of transparent germanium.
  • the first period and the second period refer to lengths of one arrangement period of the regular arrangement of the first touch electrode portion 11 and the second touch electrode portion 12, respectively.
  • the frequency of the touch electrode (or the touch electrode portion) may be defined as the number of touch electrodes (touch electrode portions) distributed over a certain length of the display panel, and the frequency of the pixel electrodes may be Defined as the number of pixel electrodes distributed over a certain length of the display panel, the period of the pixel electrode may be defined as the length of one arrangement period of the regular arrangement of the pixel electrodes.
  • a first touch electrode portion 11 and a plurality of second touch electrode portions 12 disposed on a first touch electrode portion 11 are used in place of the conventional touch component.
  • One of the touch electrodes, and the period of the first touch electrode portion 11 is substantially equal to the period of the touch electrodes in the conventional touch device, and the period of the second touch electrode portion 12 is smaller than that in the conventional touch device.
  • the period of the electrode is much larger than the frequency of the pixel electrode in the display panel, thereby improving the frequency and touch of the pixel electrode in the conventional touch display panel.
  • the frequency of the second touch electrode portion is greater than the frequency of the first touch electrode portion, so that the frequency of occurrence of light and dark stripes in the display panel is increased, so that the light and dark stripes are not easily visible to the human eye. Distinguishing and perceiving also improves the visual discomfort caused by light and dark stripes.
  • the period of the first touch electrode portion 11 may be 2-10 times of the period of the second touch electrode portion 12.
  • the frequency of the second touch electrode portion 12 may be 2-10 times the frequency of the first touch electrode portion 11.
  • the period of the second touch electrode portion and the period of the pixel electrode are greatly different to reduce the moiré phenomenon.
  • three first touch electrode portions 12 are disposed on each of the first touch electrode portions 11, and the period of the first touch electrode portion 11 is the period of the second touch electrode portion 12.
  • the frequency of the second touch electrode portion 12 is approximately three times that of the first touch electrode portion 11.
  • the first touch electrode portion 11 and the second touch electrode portion 12 each have a trapezoidal cross section, and the oblique side S1 of the trapezoidal cross section of the first touch electrode portion 11 and the second touch electrode
  • the positions of the oblique sides S2 of the trapezoidal cross section of the portion 12 are offset from each other.
  • Fig. 1C is a schematic view showing the dimensional relationship in the cross section of the touch component shown in Fig. 1B.
  • the width W1 of the horizontal projection of the oblique side S1 of the trapezoidal cross section of the first touch electrode portion 11 on the substrate 10 is equal to the oblique side S2 of the trapezoidal cross section of the second touch electrode portion 12 on the substrate 10.
  • the width of the horizontal projection on the W2. For example, both are 0.1 ⁇ ⁇ .
  • the width of the dark stripe formed by the oblique side S1 of the first touch electrode portion 11 is substantially equal to the width of the dark stripe formed by the oblique side S2 of the second touch electrode portion 12, so that the dark stripe looks relatively uniform.
  • first touch electrode portion 11 and the second touch electrode portion 12 may be arranged such that the oblique projection S1 of the trapezoidal cross section of the first touch electrode portion 11 has a horizontal projection XI and a second touch on the substrate 10 Electrode part The horizontal projection X2 of the oblique side S2 of the trapezoidal cross section of the sub- 12 is substantially evenly distributed on the substrate 10.
  • both XI and X2 are 0.1 ⁇ m wide, and the spacing between adjacent XI and X2 or XI and XI or X2 and X2 is 5 ⁇ . In this way, the dark stripes can be evenly distributed over the entire display panel, which is visually difficult to be perceived by the human eye.
  • each of the first touch electrode portion 11 and the second touch electrode portion 12 has a thickness equal to a half wavelength of light passing through the first touch electrode portion 11 or the second touch electrode portion 12. Multiples.
  • the film thicknesses of the first touch electrode portion 11 and the second touch electrode portion 12 satisfy the optical interference cancellation condition, thereby improving the light transmittance and increasing the brightness of the display panel.
  • the transmittance of visible light is the highest when the transmittance of yellow-green light is the highest in visible light, the main considerations are when designing the thicknesses of the first touch electrode portion 11 and the second touch electrode portion 12. The wavelength of yellow-green light.
  • the first touch electrode portion 11 and the second touch electrode portion 12 form a unitary structure.
  • the present disclosure is not limited thereto, and the first touch electrode portion 11 and the second touch electrode portion 12 may be formed into a layered structure from different materials.
  • the thickness of the first touch electrode portion 11 and the thickness of the second touch electrode portion 12 may be the same or different; the slope angle of the trapezoidal cross section of the first touch electrode portion 11 and the second touch The slope angle of the trapezoidal cross section of the control electrode portion 12 may be the same or different.
  • the first touch electrode portion 11 and the second touch electrode portion 12 may have an isosceles or a non-isometric ladder-shaped cross section. The effect of reducing moiré and light and dark stripes of the present disclosure can be achieved by providing a plurality of second touch electrode portions 12 on the first touch electrode portion 11 to increase the frequency of the touch electrodes.
  • the touch component 100 of the above embodiment of the present disclosure can be used for SLOC (all touch electrodes are on the surface of the display panel) touch products or HIC (partial touch electrodes on the display panel surface) touch products.
  • Figure 2 shows the touch products in which all of the touch electrodes are on the surface of the display panel.
  • the display panel 200 includes a TFT array substrate 21, a liquid crystal layer 22, a color film layer 23, and a glass substrate 24 which are stacked.
  • a plurality of touch electrodes 25 are formed on the glass substrate 24.
  • the components formed by the glass substrate 24 and the touch electrodes 25 correspond to the touch components 100 as shown in FIGS. 1A and 1B.
  • the glass substrate 24 corresponds to the substrate 10 shown in FIG. 1B.
  • Each of the touch electrodes 25 includes a first touch electrode portion 11 and a plurality of second touch electrodes disposed on each of the first touch electrode portions 11. Electrode portion 12. The plurality of first touch electrode portions 11 are disposed on the glass substrate 24 at a first period interval, and the plurality of second touch electrode portions 12 are disposed on each of the first touch electrode portions 11 at a second period interval. The period is less than the first period.
  • the touch electrode 25 can be a touch driving electrode or a touch sensing electrode.
  • the color film layer 23 includes, for example, a red filter layer 23R, a green filter layer 23G, and a blue filter layer 24B arranged in an array, a red filter layer 23R, and a green filter layer.
  • Each of 23G and blue filter layer 24B corresponds to one pixel electrode.
  • 2 shows a pixel electrode corresponding to one touch electrode 25 happensing.
  • each touch electrode 25 can include a first touch electrode portion 11 and two second touch electrode portions 12 .
  • the period of the pixel electrode in the display panel 200 may be 1-3 times of the distribution period of the first touch electrode portion, and the period of the first touch electrode portion 11 may be The distribution period of the second touch electrode portion 12 is 2-10 times.
  • 1-3 first touch electrode portions 11 are disposed on each of the pixel electrodes, and 2-10 second touch electrode portions 12 are disposed on each of the first touch electrode portions 11.
  • the embodiment of the present disclosure sets each touch electrode to include the first touch electrode portion and the second touch electrode portion.
  • the two layers are configured such that the period of the first touch electrode portion corresponds to the period of the touch electrode in the conventional display panel, and the period of the second touch electrode portion is set to be smaller than the period of the first touch electrode portion, thereby, the second touch
  • the frequency of the control electrode portion is different from the frequency of the pixel electrode, and the moiré phenomenon caused by the frequency of the pixel electrode being close to the frequency of the touch electrode can be improved.
  • the frequency of the second touch electrode portion is greater than the frequency of the first touch electrode portion, so that the frequency of occurrence of light and dark stripes in the display panel is increased, so that the light and dark stripes are not easily visible to the human eye. Distinguishing and perceiving also improves the visual discomfort caused by light and dark stripes.
  • the embodiment of Fig. 2 shows the case where the substrate of the touch component is a glass substrate of a color film substrate.
  • the substrate of the touch component 100 can be separately fabricated and bonded to the glass substrate of the color film substrate facing away from the array substrate. This embodiment can also obtain the effect of improving the moiré and the light and dark stripes of the display panel of the above embodiment.
  • the display panel 300 includes a TFT array substrate 31, a liquid crystal layer 32, a color filter layer 33, and a glass substrate 34 which are stacked.
  • the touch electrodes include a plurality of touch electrodes 35a formed on the surface of the glass substrate 34, such as touch driving electrodes.
  • the touch electrode 35b may be formed on a surface of the array substrate 31 facing the glass substrate 34.
  • the components formed by the glass substrate 34 and the touch electrode 35a correspond to the touch component 100 shown in FIGS. 1A and 1B.
  • the glass substrate 34 corresponds to the substrate 10 shown in FIG. 1B.
  • Each of the touch electrodes 35a includes a first touch electrode portion 11 and a plurality of second touch electrodes disposed on each of the first touch electrode portions 11. Electrode portion 12.
  • the plurality of first touch electrode portions 11 are disposed on the glass substrate 34 at a first period interval
  • the plurality of second touch electrode portions 12 are disposed on each of the first touch electrode portions 11 at a second period interval. The period is less than the first period.
  • the touch electrode 35a may have a structure as shown in FIGS.
  • the touch electrode 35b may be a structure of a conventional touch electrode.
  • Other aspects of this embodiment are the same as those of the embodiment shown in Fig. 2. Therefore, this embodiment can also obtain the effect of improving the moiré and the light and dark stripes of the display panel of the above embodiment.
  • FIG. 4 is a schematic cross-sectional view of a display panel in accordance with another embodiment of the present disclosure, showing the use of the touch assembly of FIG. 1A in an OLED panel.
  • the display panel 400 is an OLED panel, and includes The substrate 40, the lower electrode 41, the organic light-emitting layer 42 and the upper electrode 43, and the upper cover 44 are included.
  • a plurality of touch electrodes 45 are formed on the upper cover 44.
  • the assembly formed by the glass substrate 44 and the touch electrode 45 has the structure of the touch assembly 100 as shown in FIGS. 1A and 1B.
  • the glass substrate 44 corresponds to the substrate 10 shown in FIG. 1B.
  • Each of the touch electrodes 45 includes a first touch electrode portion 11 and a plurality of second touch electrodes disposed on each of the first touch electrode portions 11. Electrode portion 12. The plurality of first touch electrode portions 11 are disposed at a first period interval, and the plurality of second touch electrode portions 12 are disposed on each of the first touch electrode portions 11 at a second period interval, and the second period is less than the first period. .
  • the touch electrode 45 can be a touch driving electrode or a touch sensing electrode.
  • Other aspects of this embodiment are similar to the embodiment shown in FIG. 2. Therefore, this embodiment can also obtain the effect of improving the moiré and the light and dark stripes of the display panel of the above embodiment.
  • the display panels of the embodiments of FIG. 2, FIG. 3 and FIG. 4 are only schematic views, and those skilled in the art should understand that the display panel further includes other necessary known structures, such as a backlight module, a polarizer, and a quarter-wave plate. Structures such as pixel electrodes, common electrodes, and the like are not specifically described herein.
  • a method of manufacturing the touch control assembly 100 includes the following steps: First, a substrate 10 as shown in FIG. 1B is provided, and the substrate 10 is, for example, a separate glass substrate or a liquid crystal display. a plurality of touch electrodes are formed on the substrate 10 such that each touch electrode includes a first touch electrode portion 11 and a plurality of the first touch electrode portions 11
  • the second touch electrode portion 12 is disposed on the substrate 10 at a first period L1, and the second touch electrode portion 12 is disposed at each second touch at a second period L2.
  • the second period L2 is smaller than the first period L1.
  • FIG. 5 illustrates a specific process of a method of fabricating a touch component in accordance with one embodiment of the present disclosure.
  • the substrate 10 is provided.
  • the substrate 10 is specifically a glass substrate or other substrate.
  • step S52 a plurality of first touch electrode portions 11 are formed on the substrate 10, and the plurality of first touch electrode portions 11 are disposed at a first period interval.
  • step S53 a plurality of second touch electrode portions 12 are formed on each of the first touch electrode portions 11, and the plurality of second touch electrode portions 12 are arranged at a second period interval.
  • the second period is less than the first period.
  • the first period of the first touch electrode portion 11 may be 2-10 times of the second period of the second touch electrode portion 12.
  • forming the plurality of first touch electrode portions 11 on the substrate 10 includes: forming a first electrode layer on the substrate 10; patterning the first electrode layer by a first photolithography process by using the first mask to form a plurality of The first touch electrode portion 11 is annealed to obtain a stable structure of the first touch electrode portion 11.
  • Forming a plurality of second touch electrode portions 12 on each of the first touch electrode portions 11 includes: forming a second electrode layer on the substrate 10 on which the plurality of first touch electrode portions 11 are formed, using a second mask The second electrode layer is patterned by a second photolithography process to form a plurality of second touch electrode portions 12 on each of the first touch electrode portions 11, and is annealed to obtain the touch device 100.
  • the material of the first electrode layer and the second electrode layer may be transparent ITO.
  • the total thickness of the first electrode layer and the second electrode layer is substantially equal to or slightly larger than the thickness of the electrode layer of the conventional touch electrode.
  • each of the first touch electrode portions 11 and the plurality of second touch electrode portions 12 disposed on each of the first touch electrode portions 11 constitute a touch electrode of the present disclosure and correspond to a conventional touch.
  • the control unit can make the cross-sectional area (volume) of each touch electrode of the present disclosure equal to the cross-sectional area (volume) of each of the conventional touch electrodes, so that the resistivity of the touch electrode can be ensured.
  • the touch performance of the touch panel is unchanged.
  • the method for manufacturing the touch component of this embodiment adopts a common mask, and the manufacturing process is also relatively simple.
  • FIG. 6 is a diagram of a specific process of a method of manufacturing a touch component according to another embodiment of the present disclosure.
  • the substrate 10 is provided.
  • the substrate 10 is specifically a glass substrate or other substrate.
  • step S62 a layer of electrode layer 13 having a uniform thickness is formed on the substrate 10, and the thickness of the electrode layer 13 is substantially equal to or slightly larger than the thickness of the electrode layer of the conventional touch electrode.
  • the electrode layer 13 is patterned such that the electrode layer 13 forms a plurality of first touch electrode portions 11 and a plurality of second touch electrode portions 12.
  • the plurality of first touch electrode portions 11 are disposed on the substrate 10 at a first periodic interval
  • the plurality of second touch electrode portions 12 are disposed at each of the first intervals at a second period.
  • the second period is smaller than the first period.
  • the first period of the first touch electrode portion 11 may be 2-10 times of the second period of the second touch electrode portion 12.
  • the patterned electrode layer 13 includes: patterning the electrode layer by a photolithography process using a halftone mask to form a plurality of first touch electrode portions 11 and a plurality of second touch electrode portions 12.
  • the method of manufacturing the touch panel of this embodiment employs a halftone mask, which can reduce the number of masks and simplify the manufacturing process.
  • the above shows an embodiment of a method of manufacturing the touch assembly of the present disclosure.
  • the method of manufacturing the touch component of the present disclosure is not limited to the above embodiment, and for example, a touch assembly as shown in Figs. 1A and 1B can be formed by a machining method.
  • Figure 7 shows a simulation of the light and dark stripes produced by the display panel.
  • the broken line indicates the light and dark stripes of the display panel of the conventional structure
  • the solid line indicates the light and dark stripes of the display panel of the embodiment of the present disclosure.
  • the abscissa in Fig. 7 indicates the position at which the light and dark stripes are generated, and the ordinate indicates the transmittance of the display panel.
  • the frequency of the light and dark stripes of the display panel of the presently disclosed embodiment is increased, which is visually less noticeable.
  • Fig. 8 shows the relationship between the level of the moiré generated by the display panel and the number of the second touch electrode portions.
  • the abscissa indicates the number of second touch electrode portions corresponding to one sub-pixel on the display panel, and the ordinate indicates the moiré level. It can be seen that the number of the second touch electrode portions is increased from one to ten, and the moiré level is gradually lightened.
  • a touch panel, a display panel, and a touch panel manufacturing method are provided by providing a stacked first touch electrode portion and a second touch electrode portion on a substrate, and Two touch The arrangement period of the electrode portion is smaller than the arrangement period of the first touch electrode portion, so that the second touch electrode portion has a larger frequency, which can improve the light and dark stripes and the moiré phenomenon of the touch display panel.

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Abstract

本申请公开了一种触控组件、包括该触控组件的显示面板及制造触控组件的方法。所述触控组件包括:基板和多个触控电极,其中,每个触控电极包括第一触控电极部分和设置在第一触控电极部分上的多个第二触控电极部分,其中,第一触控电极部分以第一周期间隔设置在基板上,第二触控电极部分以第二周期间隔设置在每个第一触控电极部分上,第二周期小于第一周期。

Description

触控组件、 显示面板及制造触控组件的方法 本申请要求于 2016年 11月 11 日递交中国专利局的、 申请号为 201611005528.3 的中国专利申请的权益, 该申请的全部公开内容以引用方式并入本文。 技术领域
本公开的实施例涉及显示技术领域, 具体涉及触控组件、 显示面板及制造触控组 件的方法。 背景技术
在显示技术领域中, 具有触控功能的触控显示面板因其操作便利性得到了越来越 广泛的应用。 触控显示面板的结构通常包括三种类型: 一种是触摸屏独立于显示屏的 外挂式触摸屏 (Out Cell Touch Panel), —种是触摸组件设置在显示面板内部的内嵌式 触摸屏(In Cell Touch Panel), 还有一种是触摸组件设置在显示面板表面的表面式触摸 屏 (On Cell Touch Panel )。
目前, 表面式触摸屏由于成本低, 成品薄, 而且对光线影响小等优点, 已经变成 主流的触控解决方案。 但是相比于其它触控解决方案, 对于表面式触摸屏产品, 由于 触控电极的坡度角 (taper) 位置处的倾斜侧边区域的光线透过率低于触控电极的平坦 表面区域的光线透过率, 导致亮度差异, 所以会产生明暗条纹现象。 不仅如此, 由于 玻璃表面触控电极 (例如由 ITO (氧化铟锡) 制成) 的排列周期与像素电极的排列周 期相近, 使得触控电极层中明暗条纹 (坡度角处形成暗条纹, 其它部分形成亮条纹) 形成的光栅和像素电极层中明暗条纹(像素电极处形成亮条纹, 黑矩阵处形成暗条纹) 形成的光栅的频率较为接近, 产生相干现象, 导致莫尔纹。 发明内容
本公开旨在提供一种触控组件、 显示面板和触控组件的制造方法, 以改善表面式 触摸屏产品的明暗条纹现象和莫尔纹现象。
根据本公开实施例的一个方面, 提供一种触控组件, 包括: 基板和多个触控电极。 每个触控电极包括第一触控电极部分和设置在第一触控电极部分上的多个第二触控电 极部分, 其中, 第一触控电极部分以第一周期间隔设置在基板上, 第二触控电极部分 以第二周期间隔设置在每个第一触控电极部分上, 第二周期小于第一周期。
根据本公开的一个示例性实施例, 第一触控电极部分的周期为第二触控电极部分 的周期的 2-10倍。 根据本公开的一个示例性实施例, 第一触控电极部分和第二触控电极部分的每一 个均具有梯形横截面, 第一触控电极部分的梯形横截面的斜边与第二触控电极部分的 梯形横截面的斜边的位置相互错开。
根据本公开的一个示例性实施例, 第一触控电极部分的梯形横截面的每个斜边在 基板上的水平投影的宽度等于第二触控电极部分的梯形横截面的每个斜边在基板上的 水平投影的宽度。
根据本公开的一个示例性实施例, 第一触控电极部分和第二触控电极部分可以排 列成使得第一触控电极部分的梯形横截面的每个斜边和第二触控电极部分的梯形横截 面的每个斜边在基板上的水平投影均匀地分布。
根据本公开的一个示例性实施例, 第一触控电极部分和第二触控电极部分中的每 一个的厚度均等于通过该第一触控电极部分或第二触控电极部分的光的半波长的倍 数。
根据本公开的一个示例性实施例, 第一触控电极部分和第二触控电极部分形成一 体结构。
本公开另一方面的实施例提供一种显示面板, 包括第一方面的各实施例的触控组 件。
根据本公开的一个示例性实施例, 该显示面板中的像素电极的周期为第一触控电 极部分的周期的 1-3倍。
根据本公开的一个示例性实施例, 所述的显示面板, 还包括: 0LED面板, 其中, 所述触控组件形成在所述 0LED面板上。
本公开另一方面的实施例提供一种触控组件的制造方法包括步骤: 提供基板; 和 在基板上形成多个触控电极, 使得每个触控电极包括第一触控电极部分和设置在第一 触控电极部分上的多个第二触控电极部分, 其中, 第一触控电极部分以第一周期间隔 设置在基板上, 第二触控电极部分以第二周期间隔设置在第一触控电极部分上, 第二 周期小于第一周期。
根据本公开的一个示例性实施例, 其中, 在基板上形成多个触控电极包括: 在基 板上形成第一触控电极层, 第一触控电极层包括多个所述第一触控电极部分; 和在第 一触控电极层上形成第二触控电极层, 第二触控电极层包括多个所述第二触控电极部 分。
具体地, 采用第一掩模板通过第一光刻工艺图案化第一触控电极层, 以形成多个 所述第一触控电极部分;和采用第二掩模板通过第二光刻工艺图案化第二触控电极层, 以形成多个所述第二触控电极部分。
根据本公开的一个示例性实施例, 其中, 在基板上形成多个触控电极包括: 在基 板上形成均匀厚度的一层电极层; 和图案化电极层, 使得电极层形成多个所述第一触 控电极部分和多个所述第二电极部分。 具体地, 图案化电极层可包括: 采用半色调掩模板通过一次光刻工艺图案化电极 层。
根据本公开实施例提供的触控组件、 显示面板和触控组件的制造方法, 通过在基 板上提供层叠的第一触控电极部分和第二触控电极部分, 以代替传统的触控电极, 并 使第二触控电极部分的排布周期小于第一触控电极部分的排布周期, 从而增加了基板 表面的触控电极的频率, 能够改善触控显示面板的明暗条纹现象和莫尔纹现象。 附图说明
图 1A是根据本公开的一个实施例的触控组件的平面示意图;
图 1B是如图 1A所示的触控组件沿 A-A' 线的截面示意图;
图 1C是说明如图 1B所示的触控组件的截面中的尺寸关系的示意图;
图 2是根据本公开的一个实施例的显示面板的截面示意图;
图 3是根据本公开的另一个实施例的显示面板的截面示意图;
图 4是根据本公开的又一个实施例的显示面板的截面示意图;
图 5是根据本公开的一个实施例的制造触控组件的方法的过程的图示; 图 6是根据本公开的另一个实施例的制造触控组件的方法的过程的图示; 图 7示出了显示面板产生的明暗条纹的模拟图; 以及
图 8示出了显示面板产生的莫尔纹的等级与第二触控电极部分的条数的关系。 具体实施方式
为更清楚地阐述本公开的目的、 技术方案及优点, 以下将结合附图对本公开的实 施例进行详细的说明。 应当理解的是, 下文对于实施例的描述旨在对本公开的总体构 思进行解释和说明, 而不应当理解为是对本公开的限制。 在说明书中, 相同或相似的 附图标记指代相同或相似的部件或构件。
本文中使用的方位性术语 "上"、 "下"、 "左"、 "右"、 "顶"或 "底"等, 均指的 是附图中呈现的方位, 这些方位性术语仅为了便于描述, 而不应当被解释为对本公开 的限定。
图 1A是根据本公开的一个实施例的触控组件的平面示意图。 图 1B是如图 1A所 示的触控组件沿 A-A' 的截面示意图。 如图 1A和 1B所示, 触控组件 100包括基板 10、 设置在基板 10上的多个触控电极, 每个触控电极包括第一触控电极部分 11和设 置在第一触控电极部分 11上的多个第二触控电极部分 12。 多个第一触控电极部分 11 以第一周期 L1间隔设置, 多个第二触控电极部分 12以第二周期 L2间隔设置在每个 第一触控电极部分 11上, 第二周期 L2小于第一周期 Ll。例如, 第一触控电极部分 11 的第一周期 L1可以为大致 50 μ ιη, 第二触控电极部分 12的第二周期 L2可以为大致 10 μ ιη。 基板 10可以为玻璃基板。 第一触控电极部分 11和第二触控电极部分 12可以 由透明 ΙΤΟ制成。
这里, 第一周期和第二周期分别是指第一触控电极部分 11 和第二触控电极部分 12的规则性排列的一个排列周期的长度。 对应地, 本申请的公开中, 触控电极 (或触 控电极部分) 的频率可以定义为在显示面板的一定长度上分布的触控电极 (触控电极 部分) 的数量, 像素电极的频率可以定义为在显示面板的一定长度上分布的像素电极 的数量, 像素电极的周期可以定义为像素电极的规则性排列的一个排列周期的长度。
在图 1A和 1B所示的触控组件 100中, 采用一个第一触控电极部分 11和设置在 一个第一触控电极部分 11上的多个第二触控电极部分 12代替传统触控组件中的一个 触控电极,并且第一触控电极部分 11的周期与传统触控组件中的触控电极的周期大致 相等, 而第二触控电极部分 12的周期小于传统触控组件中的触控电极的周期。采用这 样的触控电极结构, 与传统触控组件相比, 第二触控电极部分的频率远大于显示面板 中像素电极的频率, 从而能够改善传统触控显示面板中因像素电极的频率与触控电极 的频率相近导致的莫尔纹现象。 同时, 由于设置了第二触控电极部分, 且第二触控电 极部分的频率大于第一触控电极部分的频率,在显示面板中明暗条纹出现的频率增加, 使明暗条纹不容易被人眼分辨和察觉, 也改善了明暗条纹造成的视觉不适。
具体地, 根据一个实施例, 第一触控电极部分 11的周期可以为第二触控电极部分 12的周期的 2-10倍。 换句话说, 第二触控电极部分 12的频率可以为第一触控电极部 分 11 的频率的 2-10倍。 这样, 可以保证第二触控电极部分的周期和像素电极的周期 差异较大, 以减轻莫尔纹现象。 例如, 如图 1B所示, 每个第一触控电极部分 11上设 置三个第二触控电极部分 12, 则第一触控电极部分 11的周期是第二触控电极部分 12 的周期的大致 3倍, 第二触控电极部分 12的频率大致为第一触控电极部分 11的频率 的 3倍。
如图 1B所示,第一触控电极部分 11和第二触控电极部分 12每个均具有梯形横截 面,第一触控电极部分 11的梯形横截面的斜边 S1与第二触控电极部分 12的梯形横截 面的斜边 S2的位置相互错开。这样, 可以避免第一触控电极部分 11的斜边 S1形成的 暗条纹与第二触控电极部分 12的斜边 S2形成的暗条纹连接在一起,形成大的暗条纹。
图 1C是说明如图 1B所示的触控组件的截面中的尺寸关系的示意图。 如图 1C所 示, 第一触控电极部分 11的梯形横截面的斜边 S1在基板 10上的水平投影的宽度 W1 等于第二触控电极部分 12的梯形横截面的斜边 S2在基板 10上的水平投影的宽度 W2。 例如, 均为 0.1 μ ιη。
这样, 第一触控电极部分 11的斜边 S1形成的暗条纹的宽度大致等于第二触控电 极部分 12的斜边 S2形成的暗条纹的宽度, 使得暗条纹看起来比较均匀。
进一步地, 第一触控电极部分 11和第二触控电极部分 12可以排列成使得第一触 控电极部分 11的梯形横截面的斜边 S1在基板 10上的水平投影 XI和第二触控电极部 分 12的梯形横截面的斜边 S2在基板 10上的水平投影 X2大致均匀地分布。例如, XI 和 X2的宽度均为 0.1 μ m, 而相邻的 XI和 X2或 XI和 XI或 X2和 X2之间的间距均 为 5 μ ιη。这样, 可以使得暗条纹在整个显示面板上均匀分布, 在视觉上不易被人眼察 觉。
根据一个实施例, 第一触控电极部分 11和第二触控电极部分 12中的每一个的厚 度均等于通过该第一触控电极部分 11或第二触控电极部分 12的光的半波长的倍数。 这样, 第一触控电极部分 11和第二触控电极部分 12的薄膜厚度满足光学干涉相消条 件, 能够提高光透过率, 增加显示面板亮度。 以常见的可见光为例, 因为可见光中当 黄绿光的透过率最高时, 可见光的透过率也最高, 因此, 设计第一触控电极部分 11和 第二触控电极部分 12的厚度时主要考虑黄绿光的波长。
根据一个实施例, 第一触控电极部分 11和第二触控电极部分 12形成一体结构。 这样,便于由同一种材料采用单一半色调掩模制造第一触控电极部分 11和第二触控电 极部分 12, 能够简化制作工艺。 当然, 本公开不限于此, 第一触控电极部分 11和第 二触控电极部分 12可以由不同材料形成分层结构。
以上只是本公开的若干具体实施例的触控组件的结构, 触控组件的结构不限于上 述实施例。 在其它实施例中, 第一触控电极部分 11的厚度和第二触控电极部分 12的 厚度可以相同, 也可以不同; 第一触控电极部分 11的梯形横截面的坡度角和第二触控 电极部分 12的梯形横截面的坡度角可以相同, 也可以不同。此外, 第一触控电极部分 11和第二触控电极部分 12可以具有等腰或非等腰梯型横截面。 只要通过在第一触控 电极部分 11 上设置多个第二触控电极部分 12, 从而增加触控电极的频率, 均可以实 现本公开的减少莫尔纹和明暗条纹的效果。
本公开上述实施例的触控组件 100可以用于 SLOC (全部的触控电极都在显示面 板表面) 触控产品或者 HIC (部分的触控电极在显示面板表面) 触控产品。 图 2示出 了全部的触控电极都在显示面板表面的触控产品。 如图 2所示, 显示面板 200包括层 叠设置的 TFT阵列基板 21、 液晶层 22、 彩膜层 23和玻璃基板 24。 玻璃基板 24上形 成有多个触控电极 25。 在该实施例中, 玻璃基板 24和触控电极 25形成的组件对应如 图 1A和 1B所示的触控组件 100。 SP, 玻璃基板 24对应图 IB所示的基板 10, 每个触 控电极 25都包括一个第一触控电极部分 11和设置在每个第一触控电极部分 11上的多 个第二触控电极部分 12。 多个第一触控电极部分 11 以第一周期间隔设置在玻璃基板 24上,多个第二触控电极部分 12以第二周期间隔设置在每个第一触控电极部分 11上, 第二周期小于第一周期。 这里, 触控电极 25可以为触控驱动电极或触控感应电极。
在图 2所示的显示装置 200中,彩膜层 23例如包括排列成阵列的红色滤光层 23R、 绿色滤光层 23G和蓝色滤光层 24B, 红色滤光层 23R、 绿色滤光层 23G和蓝色滤光层 24B中的每一个对应一个像素电极。图 2示出了一个像素电极对应一个触控电极 25的 情况。 如图 2所示, 每个触控电极 25可以包括一个第一触控电极部分 11和两个第二 触控电极部分 12。
可选地, 根据本公开的其它实施例, 显示面板 200中的像素电极的周期可以为第 一触控电极部分的分布周期的 1-3倍, 而第一触控电极部分 11的周期可以为第二触控 电极部分 12的分布周期的 2-10倍。 SP, 每个像素电极上设置 1-3个第一触控电极部 分 11, 而每个第一触控电极部分 11上设置 2-10个第二触控电极部分 12。
与传统触控显示面板中触控电极只包括一层电极层的情况相比, 本公开的实施例 通过将每个触控电极设置为包括第一触控电极部分和第二触控电极部分的两层, 使第 一触控电极部分的周期对应传统显示面板中触控电极的周期, 而使第二触控电极部分 的周期设置为小于第一触控电极部分的周期, 从而, 第二触控电极部分的频率与像素 电极的频率差异较大, 能够改善因像素电极的频率与触控电极的频率相近导致的莫尔 纹现象。 同时, 由于设置了第二触控电极部分, 且第二触控电极部分的频率大于第一 触控电极部分的频率, 在显示面板中明暗条纹出现的频率增加, 使明暗条纹不容易被 人眼分辨和察觉, 也改善了明暗条纹造成的视觉不适。
图 2的实施例示出了触控组件的基板为彩膜基板的玻璃基板的情况。 根据其它的 实施例, 触控组件 100的基板可以单独制备, 并粘接到彩膜基板的背对阵列基板的一 侧的玻璃基板上。 该实施例同样可以获得上述实施例的显示面板的改善莫尔纹和明暗 条纹的效果。
图 3是根据本公开的另一个实施例的显示面板 300的截面示意图, 示出了部分的 触控电极 35a在显示面板 300表面的触控产品。 如图 3所示, 显示面板 300包括层叠 设置的 TFT阵列基板 31、液晶层 32、彩膜层 33和玻璃基板 34。 图 3所示的该实施例 的显示装置 300与图 2所示的显示装置 200的区别在于, 触控电极包括形成在玻璃基 板 34表面上的多个触控电极 35a, 例如触控驱动电极, 以及设置在显示面板 300内部 的多个触控电极 35b, 例如触控感应电极。 具体地, 触控电极 35b可以形成在阵列基 板 31的面对玻璃基板 34的表面上。
在该实施例中, 玻璃基板 34和触控电极 35a形成的组件对应如图 1A和 1B所示 的触控组件 100。 SP, 玻璃基板 34对应图 IB所示的基板 10, 每个触控电极 35a都包 括一个第一触控电极部分 11和设置在每个第一触控电极部分 11上的多个第二触控电 极部分 12。 多个第一触控电极部分 11以第一周期间隔设置在玻璃基板 34上, 多个第 二触控电极部分 12以第二周期间隔设置在每个第一触控电极部分 11上, 第二周期小 于第一周期。这里,触控电极 35a可以具有如图 1A和 1B所示的结构,而触控电极 35b 可以是传统的触控电极的结构。该实施例的其它方面与图 2所示的实施例相同, 因此, 该实施例同样可以获得上述实施例的显示面板的改善莫尔纹和明暗条纹的效果。
图 4是根据本公开的另一个实施例的显示面板的截面示意图, 示出了如图 1A所 示的触控组件在 OLED面板中的应用。 如图 4所示, 显示面板 400为 OLED面板, 包 括基板 40、 下电极 41、 有机发光层 42和上电极 43、 上盖板 44。 在上盖板 44上形成 有多个触控电极 45。 在该实施例中, 玻璃基板 44和触控电极 45形成的组件具有如图 1A和 1B所示的触控组件 100的结构。 SP, 玻璃基板 44对应图 IB所示的基板 10, 每 个触控电极 45都包括一个第一触控电极部分 11和设置在每个第一触控电极部分 11上 的多个第二触控电极部分 12。 多个第一触控电极部分 11 以第一周期间隔设置, 多个 第二触控电极部分 12以第二周期间隔设置在每个第一触控电极部分 11上, 第二周期 小于第一周期。这里, 触控电极 45可以为触控驱动电极或触控感应电极。 该实施例的 其它方面与图 2所示的实施例类似。 因此, 该实施例同样可以获得上述实施例的显示 面板的改善莫尔纹和明暗条纹的效果。
图 2、 图 3和图 4的各实施例的显示面板都只是示意图, 本领域技术人员应当理 解, 显示面板还包括其它必要的已知结构, 例如背光模组、 偏光片、 1/4波片、 像素电 极、 公共电极等结构, 这里不再具体描述。
以下说明制造如图 1A和 1B所示的触控组件 100的方法。
总的来说, 根据本公开的一个实施例的制造触控组件 100的方法包括以下步骤: 首先, 提供如图 1B所示的基板 10, 该基板 10例如为单独的玻璃基板或者液晶显示器 的彩膜基板; 接着, 如图 1B所示, 在基板 10上形成多个触控电极, 使得每个触控电 极包括第一触控电极部分 11和设置在第一触控电极部分 11上的多个第二触控电极部 分 12; 并且, 第一触控电极部分 11 以第一周期 L1间隔设置在基板 10上, 第二触控 电极部分 12以第二周期 L2间隔设置在每个第一触控电极部分 11上, 第二周期 L2小 于第一周期 Ll。
图 5示出了根据本公开的一个实施例的制造触控组件的方法的具体过程。 参考附 图 5,在步骤 S51中,提供基板 10。例如, 该基板 10具体为玻璃基板或者其他的基板。
接下来, 在步骤 S52中, 在基板 10上形成多个第一触控电极部分 11, 所述多个 第一触控电极部分 11以第一周期间隔设置。
如图 5所示, 在步骤 S53中, 在每个第一触控电极部分 11上形成多个第二触控电 极部分 12, 所述多个第二触控电极部分 12 以第二周期间隔设置, 第二周期小于第一 周期。 例如, 第一触控电极部分 11的第一周期可以为第二触控电极部分 12的第二周 期的 2-10倍。
具体地, 在基板 10上形成多个第一触控电极部分 11包括: 在基板 10上形成第一 电极层; 采用第一掩模板通过第一光刻工艺图案化第一电极层, 以形成多个第一触控 电极部分 11, 并经退火后得到稳定的第一触控电极部分 11的结构。
在每个第一触控电极部分 11上形成多个第二触控电极部分 12包括: 在形成有多 个第一触控电极部分 11的基板 10上形成第二电极层, 采用第二掩模板通过第二光刻 工艺图案化第二电极层, 以在每个第一触控电极部分 11上形成多个第二触控电极部分 12, 并经退火后得到触控组件 100。 这里, 第一电极层和第二电极层的材料可以为透明 ITO。 第一电极层和第二电极 层的总厚度大致等于或略大于传统触控电极的电极层的厚度。 具体地, 假设每个第一 触控电极部分 11和在每个第一触控电极部分 11上设置的多个第二触控电极部分 12构 成本公开的一个触控电极并对应一个传统的触控电级, 则可以使本公开的每个触控电 极的横截面面积 (体积)等于传统的每个触控电级的横截面面积 (体积), 这样, 能够 保证触控电极的电阻率不变, 使得触控面板的触控性能不变。
该实施例的制造触控组件的方法采用普通掩模板, 制造工艺也比较简单。
图 6是根据本公开的另一个实施例的制造触控组件的方法的具体过程的图示。 如 图 6所示, 在步骤 S61中, 提供基板 10。 例如, 该基板 10具体为玻璃基板或者其他 的基板。
然后, 在步骤 S62中, 在基板 10上形成均匀厚度的一层电极层 13, 该电极层 13 的厚度大致等于或略大于传统触控电极的电极层的厚度。
在步骤 S63中, 图案化电极层 13, 使得电极层 13形成多个第一触控电极部分 11 和多个第二触控电极部分 12。 如图 6所示, 所述多个第一触控电极部分 11 以第一周 期间隔设置在基板 10上, 所述多个第二触控电极部分 12以第二周期间隔设置在每个 第一触控电极部分 11上, 第二周期小于第一周期。 例如, 第一触控电极部分 11的第 一周期可以为第二触控电极部分 12的第二周期的 2-10倍。
更具体地, 图案化电极层 13包括: 采用半色调掩模板通过一次光刻工艺图案化电 极层, 以形成多个第一触控电极部分 11和多个第二触控电极部分 12。
该实施例的制造触控组件的方法采用半色调掩模板, 可以减少掩模板的数量, 简 化制造工艺。
以上示出了制造本公开的触控组件的方法的实施例。 制造本公开的触控组件的方 法不限于上述实施例, 例如, 可以采用机械加工方法形成如图 1A和 1B所示的触控组 件。
图 7示出了显示面板产生的明暗条纹的模拟图。 如图 7所示, 虚线表示传统结构 的显示面板的明暗条纹, 实线表示本公开的实施例的显示面板的明暗条纹。 图 7中的 横坐标表示产生明暗条纹的位置, 纵坐标表示显示面板的透过率。 如图 7所示, 本公 开实施例的显示面板的明暗条纹的频率增大, 视觉上更不易被觉察。
图 8示出了显示面板产生的莫尔纹的等级与第二触控电极部分的条数的关系。 如 图所示, 横坐标表示显示面板上对应一个子像素的第二触控电极部分的条数, 纵坐标 表示莫尔纹等级。 可以看出, 第二触控电极部分的条数由 1条提升到 10条, 莫尔纹等 级逐渐变轻。
如上所述, 根据本公开各实施例提供的触控组件、 显示面板和触控组件的制造方 法, 通过在基板上提供层叠的第一触控电极部分和第二触控电极部分, 并使第二触控 电极部分的排布周期小于第一触控电极部分的排布周期, 使得第二触控电极部分具有 较大的频率, 能够改善触控显示面板的明暗条纹和莫尔纹现象。
以上通过举例的方式描述了本公开的几个实施例, 但是本领域的技术人员将会认 识到, 在不背离本公开的构思的前提下, 可以对本公开的实施例做出各种修改和变化。 所有这些修改和变化都应当落入本公开的保护范围内。 因此, 本公开的保护范围应以 权利要求限定的保护范围为准。

Claims

权 利 要 求
1. 一种触控组件, 包括:
基板; 和
多个触控电极, 其中,
每个触控电极包括第一触控电极部分和设置在第一触控电极部分上的多个第二触 控电极部分, 其中, 第一触控电极部分以第一周期间隔设置在基板上, 第二触控电极 部分以第二周期间隔设置在每个第一触控电极部分上, 第二周期小于第一周期。
2. 根据权利要求 1所述的触控组件, 其中, 第一触控电极部分的周期为第二触控 电极部分的周期的 2-10倍。
3. 根据权利要求 1或 2所述的触控组件, 其中, 第一触控电极部分和第二触控电 极部分的每一个均具有梯形横截面, 第一触控电极部分的梯形横截面的斜边与第二触 控电极部分的梯形横截面的斜边的位置相互错开。
4. 根据权利要求 3所述的触控组件, 其中, 第一触控电极部分的梯形横截面的每 个斜边在基板上的水平投影的宽度等于第二触控电极部分的梯形横截面的每个斜边在 基板上的水平投影的宽度。
5. 根据权利要求 3所述的触控组件, 其中, 第一触控电极部分和第二触控电极部 分排列成使得第一触控电极部分的梯形横截面的每个斜边和第二触控电极部分的梯形 横截面的每个斜边在基板上的水平投影在平行于基板的平面上均匀地分布。
6. 根据权利要求 1-5中任一项所述的触控组件, 其中, 第一触控电极部分和第二 触控电极部分中的每一个的厚度均等于通过该第一触控电极部分或第二触控电极部分 的光的半波长的倍数。
7. 根据权利要求 1-6中任一项所述的触控组件, 其中, 第一触控电极部分和第二 触控电极部分形成一体结构。
8. —种显示面板, 包括根据权利要求 1-7中任一项所述的触控组件。
9. 根据权利要求 8所述的显示面板, 其中, 该显示面板中的像素电极的周期为第 一触控电极部分的周期的 1-3倍。
10. 根据权利要求 8或 9所述的显示面板, 还包括:
OLED面板,
其中, 所述触控组件形成在所述 OLED面板上。
11. 一种触控组件的制造方法, 包括步骤:
提供基板; 和
在基板上形成多个触控电极, 使得每个触控电极包括第一触控电极部分和设置在 第一触控电极部分上的多个第二触控电极部分, 其中, 第一触控电极部分以第一周期 间隔设置在基板上, 第二触控电极部分以第二周期间隔设置在每个第一触控电极部分 上, 第二周期小于第一周期。
12. 根据权利要求 11所述的触控组件的制造方法, 其中, 在基板上形成多个触控 电极包括:
在基板上形成第一触控电极层,第一触控电极层包括多个所述第一触控电极部分; 和
在第一触控电极层上形成第二触控电极层, 第二触控电极层包括多个所述第二触 控电极部分。
13. 根据权利要求 12所述的触控组件的制造方法, 其中,
采用第一掩模板通过第一光刻工艺图案化第一触控电极层, 以形成多个所述第一 触控电极部分; 和
采用第二掩模板通过第二光刻工艺图案化第二触控电极层, 以形成多个所述第二 触控电极部分。
14. 根据权利要求 11所述的触控组件的制造方法, 其中, 在基板上形成多个触控 电极包括:
在基板上形成均匀厚度的一层电极层; 和
图案化电极层, 使得电极层形成多个所述第一触控电极部分和多个所述第二电极 部分。
15. 根据权利要求 14所述的触控组件的制造方法, 其中,
图案化电极层包括: 采用半色调掩模板通过一次光刻工艺图案化电极层。
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