US20130278511A1 - Flexible touch screen panel - Google Patents

Flexible touch screen panel Download PDF

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Publication number
US20130278511A1
US20130278511A1 US13/541,207 US201213541207A US2013278511A1 US 20130278511 A1 US20130278511 A1 US 20130278511A1 US 201213541207 A US201213541207 A US 201213541207A US 2013278511 A1 US2013278511 A1 US 2013278511A1
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US
United States
Prior art keywords
touch screen
screen panel
substrate
active region
flexible touch
Prior art date
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.)
Abandoned
Application number
US13/541,207
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English (en)
Inventor
Sung-ku Kang
Tae-Hyeog Jung
Hak-Sun Kim
Akira Hirai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Display Co Ltd
Original Assignee
Samsung Mobile Display Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Mobile Display Co Ltd filed Critical Samsung Mobile Display Co Ltd
Assigned to SAMSUNG MOBILE DISPLAY CO., LTD. reassignment SAMSUNG MOBILE DISPLAY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HIRAI, AKIRA, JUNG, TAE-HYEOG, KANG, SUNG-KU, KIM, HAK-SUN
Assigned to SAMSUNG DISPLAY CO., LTD. reassignment SAMSUNG DISPLAY CO., LTD. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: SAMSUNG MOBILE DISPLAY CO., LTD.
Publication of US20130278511A1 publication Critical patent/US20130278511A1/en
Priority to US15/356,431 priority Critical patent/US9996205B2/en
Abandoned legal-status Critical Current

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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
    • G06F3/0443—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; 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/208—Touch screens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/08—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of polarising materials
    • 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
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • 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
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present disclosure relates to a touch screen panel, and more particularly, to a flexible touch screen panel.
  • a touch screen panel is an input device capable of selecting the indication content or icons displayed on the screen of an image display device by a human hand or an object to input the command of a user.
  • the touch screen panel is provided over the entire surface of the image display device to generate an electric signal indicative of a contact position of a human hand or an object. Therefore, the instruction contact selected in the contact position is received as an input signal.
  • the touch screen panel may replace other input devices such as a keyboard or a mouse, which can be coupled to the image display device, the use range is gradually increasing.
  • the electrostatic capacitive touch screen panel senses a change in capacitance formed by a conductive sense pattern together with another peripheral sense pattern or a ground electrode when the human hand or the object contacts the touch screen panel to generate an electric signal indicative of the contact position.
  • the touch screen panel is attached to the external surface of an image display device such as a liquid crystal display (LCD) and an organic light emitting display. Therefore, the touch screen panel is required to have high transmittance and small thickness.
  • an image display device such as a liquid crystal display (LCD) and an organic light emitting display. Therefore, the touch screen panel is required to have high transmittance and small thickness.
  • an aspect of the present invention provides a flexible touch screen panel in which sensing patterns as a touch sensor are formed on the first surface of a thin film substrate having a flexible characteristic and a coated polarizer layer is formed on the second surface of the thin film substrate while maintaining the flexible characteristic. This can reduce the thickness of the flexible touch screen panel, and improve the visibility of an image.
  • One aspect of the present invention provides a flexible touch screen panel, including a flexible substrate comprising an active region and a non-active region positioned outside the active region, sensing patterns formed over the active region of a first surface of the substrate, conductive lines formed over the non-active region of the first surface of the substrate and connected to the sensing patterns, and a coated polarizer layer formed over a second surface of the substrate.
  • the coated polarizer layer is a thin crystal film polarizer.
  • the substrate may comprise a phase shift film.
  • the substrate is configured to function as a quarter wave plate (QWP) and comprises a polycarbonate (PC) film, an oriented polypropylene (OPP) film, or a polyvinyl alcohol (PVA) film.
  • QWP quarter wave plate
  • PC polycarbonate
  • OPP oriented polypropylene
  • PVA polyvinyl alcohol
  • the substrate comprises a plurality of phase shift films to form a lamination structure.
  • the retardation values of at least two of the plurality of phase shift films differ from each other.
  • the substrate comprises a cast polycarbonate (PC) film or a cyclic polyolefin (COP) film.
  • PC cast polycarbonate
  • COP cyclic polyolefin
  • the sensing patterns include first sensing cells arranged in a first direction, first coupling lines, each of which electrically connects neighboring two cells among the plurality of first sensing cells, second sensing cells arranged in a second direction, and second coupling lines, each of which electrically connects neighboring two cells among the plurality of second sensing cells.
  • An insulating layer is interposed between and at an intersection of one of the first coupling lines and one of the second coupling lines.
  • a black matrix is further formed in the non-active region of the first surface of the substrate.
  • the coated polarizer layer is formed on the thin film substrate having the flexible characteristic and the sensing patterns as the touch sensor are formed on the bottom surface of the flexible substrate to secure the flexible characteristic, to reduce the thickness of the flexible touch screen panel, and to improve the visibility of an image.
  • FIG. 1 is a plan view schematically illustrating a touch screen panel according to an embodiment of the present invention
  • FIG. 2 is an enlarged view of a main part illustrating an example of the sensing pattern illustrated in FIG. 1 ;
  • FIG. 3 is a sectional view illustrating a region (I-I′) of the touch screen panel according to embodiments of the present invention.
  • the touch screen panel attached onto the flexible image display device is required to be flexible.
  • the electrostatic capacitive touch screen panel requires processes of forming a thin film and a pattern in order to form sensing patterns for realizing a touch sensor, the electrostatic capacitive touch screen panel is required to have high thermal resistance and chemical resistance.
  • sensing patterns are formed on a glass substrate that fits the process characteristics. Since the glass substrate has a thickness greater than a certain thickness to ensure safe transfer in a fabricating process, such glass substrate would not be appropriate for a flexible touch screen panel.
  • a polarizing plate is attached onto the external surface of the image display device in order to improve outdoor visibility by blocking the reflection of outdoor daylight.
  • the polarizing plate may be attached or bonded onto the external surface of the touch screen panel.
  • the polarizing plate and the touch screen panel is manufactured independently from each other and attached to each other or assembled, for example, by using an adhesive material, and thus, such assembling structure and process of the polarizing plate and the touch screen panel cause increase of the entire thickness of the display device, and reduce production efficiency and yield of the touch screen panel.
  • FIG. 1 is a plan view schematically illustrating a touch screen panel according to an embodiment of the present invention.
  • FIG. 2 is an enlarged view of a main part illustrating an example of the sensing pattern illustrated in FIG. 1 .
  • FIG. 3 is a sectional view illustrating a region (IT) of the touch screen panel according to embodiments of the present invention.
  • the touch screen panel includes a thin film substrate 10 having a flexible characteristic, sensing patterns 220 formed on a first surface of the thin film substrate 10 , and conductive sensing lines 230 for connecting the sensing patterns 220 to an external driving circuit (not shown) through a pad unit 250 .
  • a coated polarizer layer 30 is formed on a second surface of the thin film substrate 10 which is opposite to the first surface.
  • the thin film substrate 10 may perform the function of a phase shift film.
  • the thin film substrate 10 may function as a quarter wave plate (QWP) having a phase shift function, and may be formed of a polycarbonate (PC) film, an oriented polypropylene (OPP) film, or a polyvinyl alcohol (PVA) film.
  • QWP quarter wave plate
  • PC polycarbonate
  • OPP oriented polypropylene
  • PVA polyvinyl alcohol
  • the thin film substrate 10 as the phase shift film provides a phase shift or retardation to light polarized by the coated polarizer layer formed on the second surface to left-circularly polarize or right-circularly polarize incident light and to perform circular polarization or substantial circular polarization.
  • the thin film substrate 10 is formed of one layer.
  • the substrate may be formed of a lamination structure of a plurality of phase shift films.
  • the retardation values of the plurality of phase difference films may be set to vary in order to secure the optimal black characteristic of the light that passes through the coated polarizer layer.
  • the thin film substrate 10 may be formed of a cast polycarbonate (PC) film or a cyclic polyolefin (COP) film as a material without double refraction other than the phase difference film.
  • PC cast polycarbonate
  • COP cyclic polyolefin
  • the thin film substrate 10 is formed to have thickness of about 0.005 to 0.05 mm regardless of whether the thin film substrate 10 has the phase shift function so that the thin film substrate 10 secure the flexibility.
  • the coated polarizer layer 30 is formed on the thin film substrate 10 , and thus, the thickness of a polarizer plate may be minimized in comparison with a structure using a pre-formed, separate polarizing plate.
  • TAC triacetyl cellulose
  • PVA polyvinyl alcohol
  • TAC triacetyl cellulose
  • PVA polyvinyl alcohol
  • TAC triacetyl cellulose
  • PVA polyvinyl alcohol
  • the coated polarizer layer 30 is formed on the second surface, that is, the top surface of the thin film substrate 10 .
  • the coated polarizer layer can be formed by depositing or coating a material for forming a polarizer layer on the thin film substrate. In such embodiments, no adhesive material is interposed between the coated polarizer layer and the thin film substrate as no pre-formed, separate polarizing plate is used.
  • the coated polarizer layer 30 may be formed in various structures and by using various methods. According to embodiments of the present invention, the coated polarizer layer 30 is formed of a thin crystal film polarizer.
  • the thin crystal film polarizer 30 may have a thickness of or smaller than about 5 ⁇ m, in comparison with the above-described case in which the pre-formed, separate polarizing plate is provided, the thickness of the thin crystal film polarizer 30 is significantly reduced.
  • the thin crystal film polarizer 30 may have a special molecular crystal structure formed as a result of crystallizing a liquid crystal phase when liquid crystal is coated on the thin film substrate and is aligned and dried.
  • the liquid crystal phase includes at least one organic material capable of forming a stable lyotropic or thermotropic liquid crystal phase.
  • An organic material includes at least one organic compound.
  • the chemical formula includes (i) at least one ionogenic group that guarantees solubility in polar solvents for obtaining the lyotropic liquid crystal phase, (ii) at least one nonionogenic group that guarantees solubility in non-polar solvents for obtaining the thermotropic liquid crystal phase, and/or (iii) at least one counterion that may be contained or may not be contained in a molecular structure after forming a film.
  • an optically anisotropic dichroic crystal layer includes a plurality of supramolecular complexes formed of one or a plurality of organic compounds.
  • the supramolecular complexes are deflected in a specific method to provide polarization and electric conductivity of transmitted light.
  • the layer is formed of rod like supramolecules.
  • the supramolecules include at least one disk shaped polycyclic organic compound having a conjugated ⁇ -system.
  • the layer has intermolecular distance of 3.4 ⁇ 0.3 ⁇ along the polarizing axis and entirely has a well ordering crystal structure.
  • the base material of the optically anisotropic dichroic crystal layer is selected based on the existence of a group such as amine, phenol, and ketone coupled to a conjugated bond system and put on molecular planes and the existence of the developed ⁇ conjugated bond system of conjugated aromatic cyclic compounds. Molecules and/or molecular fragments have a flat structure.
  • the base material is, for example, indanthrone (Vat blue 4 ), 1,4,5,8-parylenetetracarboxylaciddibenzoimidazole (Vat Red 14), 3,4,9,10-parylenetetracarboxylaciddibenzoimidazole, and quinacridone (pigment violet 19).
  • the compound derivatives of the base material may form a stable lyotropic liquid crystal phase.
  • the molecular planes are parallel with each other and the molecules form a three dimensional crystal structure at least in the crystal layer part.
  • An optically anisotropic dichroic single crystal layer may be formed by optimizing a manufacturing technology.
  • An optical axis in the single crystal is vertical to the molecular planes.
  • the thin crystal layer has high anisotropy and represents high refractive index and/or high absorption coefficient.
  • the coated polarizer layer 30 is formed on the top surface of the thin film substrate 10 and the sensing patterns 220 and the sensing lines 230 are formed on the bottom surface of the thin film substrate 10 . Therefore, the flexible touch screen panel integrated with the polarizer may be realized.
  • a functional coating layer 32 may be further formed on the top surface of the coater polarizer layer 30 .
  • the functional coating layer may be a hard coating layer, a reflection preventing layer, or contamination preventing layer and a lamination of at least one or two of the above layers.
  • the sensing pattern 220 includes a plurality of first sensing cells 220 a formed to be coupled to each other in each row line in a row direction, first coupling lines 220 a 1 for coupling the first sensing cells 220 a in the row direction, second sensing cells 220 b formed to be coupled to each other in each column line in a column direction, and second coupling lines 220 b 1 for coupling the second sensing cells 220 b in the column direction.
  • the touch screen panel has a structure in which the sensing patterns illustrated in FIG. 2 are repetitively arranged.
  • the first sensing cells 220 a and the second sensing cells 220 b are alternately arranged not to overlap each other.
  • the first coupling lines 220 a 1 and the second coupling lines 220 b 1 intersect each other.
  • An insulating layer (not shown) for securing stability is interposed between the first coupling line 220 a 1 and the second coupling line 220 b 1 .
  • the first sensing cells 220 a are formed to be integrated with the first coupling lines 220 a 1 and the second sensing cells 220 b are formed to be integrated with the second coupling lines 220 b 1 using a transparent electrode material such as indium tin oxide (ITO).
  • ITO indium tin oxide
  • the first sensing cells 220 a are formed to be separate from the first coupling lines 220 a 1 , and then, electrically coupled to the first coupling lines 220 a 1 .
  • the second sensing cells 220 b are formed to be separated from the second coupling lines 220 b 1 , and then, electrically coupled to the second coupling lines 220 b 1 .
  • the second sensing cells 220 b are patterned to be integrated with the second coupling lines 220 b 1 in a column direction and the first sensing cells 220 a are patterned between the second sensing cells 220 b to have independent patterns and may be coupled to each other by the first coupling lines 220 a 1 positioned on or under the first sensing cells 220 a in a row direction.
  • the first coupling lines 220 a 1 may directly contact the first sensing cells 220 a on or under the first sensing cells 220 a to be electrically coupled to the first sensing cells 220 a or may be electrically coupled to the first sensing cells 220 a through contact holes.
  • the first coupling lines 220 a 1 may be formed of a transparent electrode material such as ITO or may be formed of an opaque low resistance metal material so that the width thereof is controlled to prevent the patterns from being visible.
  • the sensing lines 230 illustrated in FIG. 1 are electrically coupled to the first and second sensing cells 220 a and 220 b aligned along row and column lines to couple the first and second sensing cells 220 a and 220 b to an external driving circuit (not shown) such as a position detecting circuit through the pad unit 250 .
  • the sensing lines 230 are arranged in a non-active region positioned outside an active region in which an image is displayed.
  • the choice range of the material of the sensing lines 230 is large so that the sensing lines 230 may be formed of a low resistance metal material such as Mo, Ag, Ti, Cu, Al, and Mo/Al/Mo other than the transparent conductive material used for forming the sensing patterns 220 .
  • a change in electrostatic capacity caused by contacting at a contact position is transmitted from the sensing patterns 220 to a driving circuit (not shown) via the sensing lines 230 and the pad unit 250 . Then, the change in the electrostatic capacity is converted into an electrical signal by an X and Y input processing circuit (not shown) to identify the contact position.
  • FIG. 3 is a sectional view illustrating parts of the non-active region and the active region of the touch screen panel formed on the first surface of the flexible thin film substrate 10 .
  • the coated polarizer layer 30 is formed on the second surface of the thin film substrate 10 and, as described above, the functional coating layer 32 may be further formed on the coated polarizer layer 30 .
  • a display device 20 is attached, by a transparent adhesive layer 260 , to the bottom surface of the touch screen panel such that the first surface of the thin film substrate faces the display device 20 .
  • the display device is a flexible display device, which may be an organic light emitting display.
  • the transparent adhesive layer 260 formed of a transparent adhesive material having high light transmittance may be formed of super-view resin (SVR) or optical cleared adhesive (OCA).
  • SVR super-view resin
  • OCA optical cleared adhesive
  • the sensing patterns 220 formed on the active region of the first surface of the thin film substrate 10 include the first sensing cells 220 a formed to be coupled to each other in each row line in a first direction, the first coupling lines 220 a 1 for coupling the first sensing cells 220 a in a row direction, the second sensing cells 220 b formed to be coupled to each other in each column line in a column direction, and the second coupling lines 220 b 1 for coupling the second sensing cells 220 b in a column direction.
  • An insulating layer 240 is interposed between and at the intersection of the first coupling line 220 a 1 and the second coupling line 220 b 1 .
  • the thickness of the elements such as the sensing patterns 220 that form the touch screen panel is illustrated to be large. However, the actual thickness of the elements is much smaller.
  • a black matrix 210 and the sensing lines 230 formed to overlap the black matrix 210 and to be electrically coupled to the sensing patterns 220 are formed in the non-active region positioned outside the active region.
  • the black matrix 210 prevents the patterns such as the sensing lines formed in the non-active region from being visible and forms the frame of the display region.
  • the touch screen panel is positioned between the display device 20 and the coated polarizer layer 30 to maintain the flexible characteristic, to prevent the sensing patterns from showing through, and to minimize reflectance.
US13/541,207 2012-04-24 2012-07-03 Flexible touch screen panel Abandoned US20130278511A1 (en)

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Cited By (13)

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US20140028584A1 (en) * 2012-07-30 2014-01-30 Samsung Display Co., Ltd. Flexible touch screen panel
US20140131069A1 (en) * 2012-11-09 2014-05-15 Tpk Touch Systems (Xiamen) Inc. Touch-sensing electrode structure and method of manufacturing the same
US20140211102A1 (en) * 2013-01-29 2014-07-31 Samsung Display Co., Ltd. Flexible touch screen panel
CN104637977A (zh) * 2013-11-12 2015-05-20 宸鸿光电科技股份有限公司 发光显示装置
CN104637975A (zh) * 2013-11-12 2015-05-20 宸鸿光电科技股份有限公司 发光显示装置
US20150261355A1 (en) * 2014-03-13 2015-09-17 Tianjin Funayuanchuang Technology Co., Ltd. Touch panel and human-computer interaction device using the same
CN105765510A (zh) * 2013-11-20 2016-07-13 东友精细化工有限公司 混合触控感测电极及触控屏幕面板
CN105793805A (zh) * 2013-11-20 2016-07-20 东友精细化工有限公司 复合偏光板-整合触控感测电极及包括其的触控屏幕面板
US20160306477A1 (en) * 2015-04-17 2016-10-20 Samsung Display Co., Ltd. Touch panel
CN108369461A (zh) * 2015-08-10 2018-08-03 日进显示器株式会社 触控面板
US20200019279A1 (en) * 2017-06-09 2020-01-16 Boe Technology Group Co., Ltd. Touch panel, method for driving the same, and display device
US20200133424A1 (en) * 2018-10-31 2020-04-30 Hannstar Display Corporation Touch display apparatus
US11101332B2 (en) 2016-11-22 2021-08-24 Shanghai Tianma Micro-electronics Co., Ltd. OLED display panel and display device

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