Illll
`
`
`
`Illlllll
`
`Ill Illll
`
`Illll Ill
`
`Illll
`
`Illll Illll
`
`Illll
`
`Illll
`
`Illlll
`
`Illl
`
`Illl Illl
`
`US008330738B2
`
`(12)
`
` nited States
`Hung et al.
`
` Patent
`
`(10)
`(45)
`
` No.:
` Patent
` Date
` of Patent:
`
` B2
`S 8,330,738
`*Dec.
` 11, 2012
`
`(54) CAPACITIVE
`ELECTRODE
`
` PANEL AND
`
`TOUCH
` STRUCTURE
`
` THEREOF
`
`
`
`(75)
`
` Tai Chung
`
` Hung,
` Inventors: Yen Chung
`
` (TW);
`
`
` Kao Hsiung
` Weng,
`Ruey-Shing
`
` (TW);
`
`Chih-Chang
` Tai
`Lai,
` Chung
` County
`(TW)
`
`(73) Assignee:
`
`Wintek
`
` Corporation,
`
`
`
` Taichung
`
`
`
`
`
` (TW)
`
`(*)
`
`Notice:
`
` the term of this
`
` to any disclaimer,
`Subject
`
`
`
`patent
` is extended
` or adjusted
`
` under
`35
`U.S.C.
`
` 154(b)
` by 0 days.
`
`
`
`(58)
`
`(56)
`
` ........................ None
`Search
`
` of Classification
`Field
`
`See application
` file for complete
`
`
` search history.
`
`References
`
`Cited
`
`
`
`U.S.
`
` PATENT
`
` DOCUMENTS
`
`7,969,539
`2008/0122793
`2008/0165158
`2008/0218951
`2009/0087655
`2009/0102814
`2011/0181549
`
`B2 *
`A1 *
`A1 *
`A1 *
`A1 *
`A1 *
`A1 *
`
`
` ......................... 349/110
`6/2011 Sakurai
`
`
`
` et al .............. 345/173
`5/2008 Watanabe
`
` et al .............. 345/174
`
`7/2008 Hotelling
`
` al ................. 361/681
`
`9/2008 Kusudaet
` et al ................ 428/354
`
`4/2009 Yamada
` al ........................ 345/174
`
`4/2009 Linet
`
` et al .............. 345/174
`7/2011 Hotelling
`
`
`FOREIGN
`
`
`
` PATENT
`
` DOCUMENTS
`
` patent
`This
`claimer.
`
`(21) Appl.
`
` No.:
`
`
`
` 13/093,348
`
`
`
` is subject
`
`
`
` to a terminal
`
`dis-
`
`
`JP
`
`11066996
`
`A
`
`
`
` * 3/1999
`
`¯ cited by examiner
`
`
`
`(22) Filed:
`
`Apr.
`
` 25,
`
` 2011
`
`(65)
`
`Prior
`
` Publication
`
`
`
` Data
`
`US 2011/0199332
`
` A1
`
`Aug.
`
`18,
`
`
`
` 2011
`
`Related
`
` U.S. Application
`
`
`
` Data
`
`
` of application
`(63) Continuation
`Dec.
` 23,
` 2008.
`
`
`
`
`
` No. 12/342,513,
`
`filed
`
` on
`
`
`
`(30)
`
`Foreign Application
`
`
`
` Priority
`
` Data
`
`Dec.
`
` 24,
`
` 2007
`
`(TW)
`
`
`
`
`
` ............................... 96149671
`
` A
`
`(51)
`
`(52)
`
`
`
` Cl.
`Int.
`GO6F 3/041
`(2006.01)
` CI ...................................... 3451173;
`U.S.
`
`
`
`
`Primary Examiner
`(74)
`
` Attorney,
`Agent,
`Lowe,
` PLLC
`
`Adam R Giesy
`Muncy,
` or Firm
`
`
`
`Geissler,
`
`
`
` Olds
`
`
`
`
`
` &
`
`(57)
`
`ABSTRACT
`
`touch panel comprising a transparent
`A transparent capacitive
`substrate,
` a transparent
`
` cover lens
` and a transparent
` adhesive
`
`layer
` is provided,
` wherein
`
`
` a first
` transparent
` electrode
` layer
`
`
`and a second transparent
` electrode
`
` layer
`
` are disposed
` on the
`transparent
`
`cover
`
` lens
` and
` the transparent
`substrate
`
` respec-
`
`tively.
` The transparent
` adhesive
`
`
` layer is used to bind the first
`transparent
`
` electrode
` layer
`
` and second transparent
` electrode
`
`layer
` in order
` to combine
` the transparent
`
`
`cover
` lens
` and the
`transparent
` substrate disposed in parallel.
` Thereby, the manu-
`facturing process
` of the transparent
` capacitive
`
` touch panel
` is
`simplified,
` and the manufacturing cost of the same is lowered.
`
`
`
` 178/18.06
`
`9 Claims,
`
`
`
` 8 Drawing
`
`
`
` Sheets
`
`624
`
`
`
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`422
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`(cid:127)///////////////////T---:-..(cid:127)412
`
`
`
`410
`
`600
`
`(cid:127)
`

`

`U.S.
` Patent
`U.S. Patent
`
`Dec.
` 11, 2012
`Dec. 11, 2012
`
`Sheet 1 of 8
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`
`US 8,330,738
` B2
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`U.S.
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`
`Dec.
`
` 11, 2012
`
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`U.S.
`
` Patent
`
`Dec.
`
` 11, 2012
`
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`
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`US 8,330,738
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`U.S.
` Patent
`U.S. Patent
`
`Dec.
` 11, 2012
`Dec. 11, 2012
`
`Sheet 4 of 8
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`
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`
` 11, 2012
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`US 8,330,738
`
` B2
`
`1
` PANEL AND
`TOUCH
`
`CAPACITIVE
`
`ELECTRODE
` STRUCTURE
` THEREOF
`
`
` TO RELATED
`CROSS-REFERENCE
`
`APPLICATIONS
`
` is a continuation
` application
`This
`
`
`12/342,513,
` filed on Dec.
` 23,
` 2008.
`
`
`
` of application
`
`Ser.
`
`
`
` No.
`
`BACKGROUND
`
`
`
` OF THE INVENTION
`
`2
`touch panel
`the transparent capacitive
`panel 200. Even though
`
`
`200
`
` is thinner,
`the
` manufacturing
`process
` is more
` compli-
`
`
`cated.
` and
` 212
` layer
`
` oxide
`
` indium-tin
`the top
`
`More particularly,
`5 the bottom top indium-tin oxide
` layer 214 are formed
` on the
`
` 210. After the indium-tin
` substrate
` of the transparent
`surface
`
`
`oxide
` layer
`
`
`212
`
` is formed,
`the
` transparent
`substrate
`
` 210
`is
`turned up side down so that the indium-tin oxide layer 214 can
`be
` formed.
`
`However,
` this
`
`
` causes
` the
`
` top
` indium-tin
`oxide
` layer 212 to be harmed by contacting
`the platform or the robot
`
`
`
`
`
`10
`
`
`
`yield
`
` of the
`
`
`
` transparent
`
`
`
`
`
`
`
`
`
` still
`are
`
`
`
`
` layers
`on
`
` problems
`
` a single
`
`two
` in manufacturing
`
`side
`
` of the
` transparent
`
` manufacturing
`the
`
` lower
`
`and
`arms
`
` touch panel
` 200.
`capacitive
` conven-
` another
` of still
`view
`
`FIG.
` 3A is a cross-sectional
` 3B is an
`
`
`tional
` transparent
`
` capacitive
`
` touch panel,
`and
` FIG.
`
` panel
`in
`exploded
`view
`
` of the
` transparent
` capacitive
`touch
`
` conven-
`FIG.
`
`3A.
` Please
` refer
` to FIG.
` 3A and FIG.
`3B,
`
` the
`
`tional
` transparent
`
`capacitive
`
` touch
` panel
`
`
`300
` comprises
`
`a
`transparent
` substrate 310 and a transparent
`
` cover lens
` 320. A
` bottom indium-tin oxide layer 312,
` an insulating layer 314,
` a
`top indium-tin oxide layer 316 are successively formed on the
`surface
` of the transparent
`
` substrate
`310.
`
` Two
` anti-reflection
`
`layers
` 322 are deposited respectively
` on the surfaces
`
` on both
`sides
` of the transparent
` cover
`
` lens
` 320.
`Then,
` an optical
` adhesive
` 330 is used to bind the transpar-
`ent
` cover
` lens
` 320 and the transparent
`
` substrate
`
`310
` so as to
`complete
`the
`
` assembly
`of the
`
` transparent
`capacitive
`
` touch
`panel 300. Even though
`the transparent capacitive
`touch panel
`200
`
` is thinner,
`the
` manufacturing
`
`process
` is more
`
` compli-
`
`
` cated.
`there
`However,
`indium-tin
`oxide
`
`substrate
` 320.
`
`of the
` the formation
`
`conventionally,
`
`More
` particularly,
`
` insulating layer 312 results
` in longer manufacturing time and
`cost of the transparent
` capacitive touch panel
` 300.
` Moreover,
`a contact
` window
`(not
`
` shown)
`
`has
` to be formed
` in the insu-
`
`lating
` layer
` 312
` so that
` the top indium-tin
` oxide
` layer
` 316 is
`electrically
`connected
`to
`
`
` an integrated
`
` circuit
`(IC)
`(not
` shown)
` on the transparent
` substrate 310. The formation of the
`contact window leads to increased cost
` for preparing a mask.
`Therefore,
`the
` manufacturing
`
`cost
`and
`
`
`
` complexity
`of the
`transparent
`touch
`capacitive
`
` significantly
`
`panel
` 300
`
` is
`
`
`increased.
`
`1. Field of the Invention
` panel
` to a touch
`
`relates
`
`
`The
` present
` invention
`
` generally
`and, more particularly to a transparent capacitive touch panel.
`2. Description
` of the Prior Art
` the electronic prod-
`
`With the development in technologies,
`
` as personal
`digital
`ucts
` having
`
` a touch
` panel
`
`as
` input
` such
`assistants
` (PDA’s), handsets,
`
`
` car navigating
`
`
`systems,
`
` tablet
`personal
` computers
` (PC’ s) have been widely used.
`
` The touch
`panel
` is provided
`
`on
` the
`
`
` screen
`
`for
` the
` user
`to
`
` use
`
` input
`information
`by
` a finger
` a touch
` or
`
`
`
`pen.
` There
`have
`
` been
`
`
`various
`kinds
` panels
`
` of touch
`
` developed.
`For
`
` example,
`
`the
`capacitive touch panel
` is based on the detection of the change
`of capacitance.
` Compared
`
`
` to the resistive
`
` touch panel
` based
`on direct
`
` touch,
` capacitive
`the
`
`touch
` panel
` exhibits
`
`
`higher
`transparency
` and longer lifetime.
`
` trans-
`
`FIG.
` 1A is a cross-sectional
` view of a conventional
`
`parent
`
` capacitive
`touch
`
` panel,
`and
`
` FIG.
`
` 1B is an exploded
`view
` of the
` transparent
`
` capacitive
`touch
`
` panel
`
`
` in FIG.
`1A.
`Please
` refer to FIG.
` 1A and FIG.
`
` 1B, the conventional
` trans-
`
`parent
`
` capacitive
`touch
`
`
`panel
` 100
` comprises
`
`
`a dual-layer
`structure,
`which
`a bottom
` comprises
`
`
` transparent
`
`
`substrate
`110,
` a top transparent
` substrate
` a transparent
`
`120
` and
`
`cover
`lens
`130.
`
` A top
` indium-tin
`
`oxide
`
`
`
`
` layer 122
`
`
` and a bottom
`indium-tin
`oxide
`
` layer
`
` 112
` are respectively
`
`
`formed
`
`
` on the
`surfaces
` of the top transparent
`
` substrate
`
`120
` and the bottom
`
`transparent
` substrate
`
`
`110.
` Two
` anti-reflection
`layers
`
`
` 132
` are
`deposited
` respectively
`
`on the
`
` surfaces
` on both
`
` sides
`
` of the
`
`transparent
` cover
`
` lens
` 130.
` 140 is used to bind the top trans-
`Then,
` an optical
` adhesive
`parent
` substrate 120 and the bottom transparent
` substrate 110
`so that
` the
` optical
` adhesive
`
`140
` is sandwiched
`
`
`
` between
`the
`top
` indium-tin
`oxide
` layer
`
` and
`
` 122
`
`
` the
` bottom
` indium-tin
`
`oxide layer 112 facing each other.
` The transparent
` cover lens
`130
` is bound
`
` with
` the
`
` top
` transparent
`substrate
`
`
` 120
`
` by an
`optical
` adhesive
`
` 150 bind so as to complete
`
` the assembly
`
` of
`the
` transparent
` capacitive
`
`
`touch
` panel
`100.
`
` The
` transparent
`cover lens
` 130 is used to protect the top transparent
`
` substrate
`120 and the bottom transparent
` substrate
`
`
`110.
` is too
`
`100
`
`
`
`Since
`
`the
` transparent
`capacitive
`
` touch
` panel
`thick,
` another conventional
` structure is provided
`
`to reduce the
`thickness
` as shown in FIG.
` 2. More particularly,
`
`FIG.
` 2A is a
`cross-sectional
`view
`of
` another
`
`
` conventional
`transparent
`
`
`capacitive
` touch
` 2B is an exploded
` panel,
` FIG.
`and
`
`
` view
` of
`55
`the transparent capacitive touch panel in FIG.
` 2A. Please refer
`to FIG.
` 2A and FIG.
` 2B, the conventional
`
` transparent capaci-
`tive
` touch
` panel
`200
`
` comprises
` a transparent
`
`substrate
`
` 210
`and a transparent cover lens 220. A top indium-tin oxide layer
`212 and a bottom indium-tin oxide layer 214 are successively
`formed
`
` respectively
`
`on the
` surfaces
`
` of the transparent
`sub-
`strate
`210.
` Two
`
` anti-reflection
`
`
`layers
`222
`are
`
`
` deposited
`
`
`respectively
`on the
`
` surfaces
` on both
` of the transparent
` sides
`cover lens
` 220.
` 230 is used to bind the transpar-
` adhesive
`Then,
` an optical
` and the transparent
`
` substrate
`
`210
` so as to
`ent
` cover
` lens
` 220
`complete
`the
`
` assembly
`of the
` transparent
`
`capacitive
`
` touch
`
`15
`
`
`
`
`2o
`
`25
`
`
`
`
` 3o
`
`
`
`
`35
`
`4o
`
`
`
`45
`
`50
`
`
`
`6o
`
`65
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`SUMMARY OF THE INVENTION
`
` a trans-
` invention to provide
` of the present
`It is one object
`touch
`
`
` panel
`
` with lowered
`
`
` manufacturing
`parent
` capacitive
`
` and reduced thickness
` cost,
` simplified assembly
`
` and weight.
`
`It is another
`
` object
` of the
`
` present
` invention
`
`
` to provide
`a
`method
`for
` manufacturing
`
`a transparent
` capacitive
`touch
`
`panel
` with
` a simplified
` process
` in a high manufac-
`
`
` to result
`
`
` turing yield.
`and
` foregoing
`the
` achieve
`
`In order
`to
`
`the
` objects,
`
` other
`
`
`
`present
`invention
` provides
` a transparent
`
`
` capacitive
` touch
`panel,
` comprising:
`
`a transparent
` cover
`
`lens;
` a transparent
`
`
`
`substrate;
`a first
`
` transparent
` layer;
` electrode
`
` a second
`
`
` trans-
`parent
`electrode
`
` layer
`and
`
`
` a transparent
`
`adhesive
`layer,
` wherein
`
` transparent
`the
`lens
`cover
`
` is in parallel
`
`
`with
`the
`
` transparent
` substrate,
`
` the first transparent
` electrode
` layer and
`
`
`the
` second
`
` transparent
`electrode
`
` layer
` are
`
`
` respectively
`dis-
`posed
` on the
` surfaces
` transparent
`of the
`
`cover
`
`
` lens
` and the
`transparent
`substrate,
` transparent
`
` and
` the
`
`adhesive
`
` layer
`is
` used to bind the first
` transparent
` electrode
`
` and the sec-
`
` layer
`ond
` transparent
`electrode
`
` layer
`
`
` combine
`to
`the
`
` transparent
`cover
` lens
` and the transparent
` substrate.
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`

`

`US 8,330,738
`
` B2
`
`4
` and the
` lens
` cover
` of the transparent
`
` on the
` formed
`
` surfaces
`
`
`transparent
` substrate,
`
` and then the transparent
`
` cover lens and
` substrate
`the transparent
`
` are attached.
` Compared to the prior
`arts,
` in the present invention,
` no transparent electrode layer is
`
`to be formed on the transparent
`required
` substrate.
` Therefore,
`the manufacturing process is simplified with higher manufac-
`
`turing yield.
` Moreover,
` in the present invention,
`
` no insulating
`layer is required
` so that the manufacturing
` process
`
` is simpli-
`
`
`fied
`
`to
` reduce
`the
` manufacturing
`
`cost
`of
`
` the
` transparent
`
`
`
`capacitive
`
` touch panel.
`
`
`BRIEF
`
` DESCRIPTION
`
` OF THE DRAWINGS
`
`
`
`5
`
`10
`
`15
`
`
`2o
`
`
`
` advantages
`
`
`
`
` invention
` will
`drawings
`
` and
`
` preferred
` the
`of
`
` be readily
` under-
`
` detailed
` descrip-
`
`
`
`
`
`
` of a con-
`
`
`
` of another
`
` of another
`
`
` to
` a first
`
`3
`the
` objects,
`
` other
`
`and
`
` foregoing
`the
` achieve
`to
`
`In order
`
` manufacturing
`a
`
` a method
`
`
`present
`invention
` provides
` for
`steps
`transparent
` capacitive
`
` touch panel,
` comprising
`
` of: pro-
`viding a transparent cover lens and forming a first transparent
`electrode
`layer
`on
` a surface
`
`
`of the
`
` transparent
`
`cover
`
` lens;
`providing a transparent
` substrate and forming a second trans-
`parent
`
` electrode
`layer
`
`
`on
` a surface
`
`of the
` transparent
`sub-
`strate;
` and disposing the transparent
` cover lens
` and the trans-
`parent
`
`substrate
` in
`
` parallel,
` and
` providing
`
`
` a transparent
`adJaesive layer for binding the first transparent electrode layer
`and
` the
` second
` transparent
`
`electrode
`
` layer
`
`to
` combine
`
`the
`transparent
` cover
` and the transparent
`
` lens
`
` substrate.
`the
`
`In order
` achieve
`
`to
`
`the
` foregoing
`and
` objects,
`
` other
`
`present
`invention
`
` provides
` a transparent
`
` capacitive
`
` touch
`panel,
` comprising:
` a transparent cover lens;
`
` a first transparent
`electrode
`
` layer;
` an insulating
`
` layer
`
` and a second transparent
`electrode layer; wherein
`the first transparent electrode layer is
`disposed
` on a surface
` of the transparent
`
` cover lens,
` the insu-
`lating
` layer
`
`
` is disposed
`
` on a surface
` of the
`
` first
` transparent
`electrode
`layer
`that
`is
` different
`
`
`
`from
`the
`
`
`
`
` surface other
`whereon
`cover
`
` the transparent
`
` lens
` and the
` is disposed,
`
` sec-
`ond transparent electrode layer is disposed on a surface of the
`insulating
`layer
`that
`
`
`
`is
` different
`from
`the
` other
`
`
`
`surface
`whereon the first
` electrode
` transparent
`
` is disposed.
` layer
`
`the
`In order
`
`to
` achieve
`the
` foregoing
`
`and
` other
`
`
` objects,
`present
`invention
`
` provides
` a method
`
` manufacturing
`
` for
`
`a
`transparent
` capacitive
`
` touch panel,
` comprising
`steps
`
` of: pro-
`viding a transparent cover lens and forming a first transparent
`electrode
`layer
`on
` a surface
`
`
`of the
`
` transparent
`
`cover
`
` lens;
`forming an insulating layer on a surface of
`the first transparent
`electrode
`
` layer;
` and forming
`
` a second
`
` transparent
`
`
` electrode
`layer
` on a surface
` of the insulating
` layer.
`
` the transpar-
`
`In one embodiment
`
` of the present
`
` invention,
`ent capacitive
`touch panel further comprises
` an anti -reflection
`layer.
` The anti-reflection layer can be disposed on a surface of
`the transparent
` cover lens that is first
` different
` from the other
`
`surface
` whereon
`
` the transparent
` electrode
`
`layer
`
` is disposed.
`The
` anti-reflection
`layer
`
`
`can
` also
` be disposed
`
` between
`
`the
`transparent cover lens and the first transparent electrode layer.
`In one embodiment
` of the present
` invention,
` the first trans-
`
`parent
`
` electrode
`layer
`
` and the
` second
`
` transparent
`
` electrode
`layer comprises
` indium-tin oxide (ITO) or indium-zinc
`
` oxide
`(IZO),
`
` the transparent
`
` adhesive
` layer is a double-sided
`
` adhe-
`sive tape or a liquid-phase transparent
` adhesive,
` the transpar-
`
`ent
` cover lens
` comprises
` plastic
` or glass,
` and the transparent
`substrate
`
` comprises
`glass
`
` or tempered
` glass.
` the transpar-
`
`In one embodiment
` of the present
`
` invention,
`
`ent capacitive touch panel further comprises
` a shielding layer,
`disposed
`on
` a surface
`
`
`of the
` transparent
`substrate
`
`that
` is
`different from the other surface whereon
`the second transpar-
`ent electrode layer is disposed.
` The shielding layer comprises
`indium-tin
` oxide
` or indium-zinc
`oxide.
`
` the transpar-
`
`In one embodiment
`
` of the present
`
` invention,
`a decoration
`ent
` capacitive
`touch
` panel
` further
`
`
`
` comprises
`
`layer and a planarization layer, wherein
`the decoration
`layer is
`disposed
`
`between
` the
`
` transparent
`cover
`lens
` and
`
`
`
` the
`
`
` first
`transparent
`electrode
`
`and
` layer,
` the
` planarization
`
`
`
`layer
`is
`disposed between the decoration
` layer and the first
`
` transpar-
`ent
` electrode
`layer.
`
`
` The
` decoration
`layer
`
`
` is monochromatic
`(for example,
` black) or multi-chromatic.
` Moreover,
`
` the deco-
`ration
`
`layer
` can
`
` be
` patterned
`with
`
` symbols
`
`and
` texts.
`
` The
`decoration
`layer
` comprises
`
` an insulating
`
` material
` or a con-
`
`ductive
` material,
` while
` the planarization
`
`layer
` comprises
`an
`insulating
` material.
`
` panel
`touch
`
` capacitive
`
`Accordingly,
` in the transparent
`
`the present
` invention,
`
` the first transparent electrode layer and
`the
` second
`
`transparent
`
` electrode
`layer
`are
`
`
`
`
` respectively
`
`
`and
`spirits
`objects,
`The
`
`
` embodiments
` of the present
`stood
` by the
` accompanying
`tions,
` wherein:
`views
` 1B are cross-sectional
`
`FIG.
` 1A and FIG.
`
` capacitive
`
`
` touch panel;
`ventional
` transparent
`
`FIG.
` 2A and FIG.
` 2B are cross-sectional
`views
`conventional
`
` transparent
`
` capacitive
` touch panel;
`
` still
`of
`FIG.
`3A
` and
` FIG.
`
`3B
` are
` cross-sectional
`
`views
`
`another
` conventional
` transparent
`
`
` capacitive
` touch panel;
`
`FIG.
` 4A and FIG.
` 4B are cross-sectional
`views
`
` ofa trans-
`
`25 parent capacitive touch panel according to a first embodiment
`
`of the present
`
` invention;
`views
` 5A and FIG.
`FIG.
` 5B are cross-sectional
`
`transparent
`capacitive
`touch
`
`panel
`
` according
`embodiment
` of the present
` invention;
` still
`of
`
`views
`FIG.
`6A
` and
`
` FIG.
`6B
` are
`
` cross-sectional
`another transparent capacitive touch panel
` according to a first
`embodiment
` of the present
` invention;
` still
`of
`
`views
`FIG.
`7A
` and
`
` FIG.
`7B
` are
`
` cross-sectional
`another transparent capacitive touch panel
` according to a first
` embodiment
` of the present
` invention;
` capacitive
`FIG.
` 8 is a cross-sectional
`
` view of a transparent
`touch panel
` according to a second embodiment
` of the present
`invention;
`and
`
` transparent
`
` another
`of
`
`view
`
`FIG.
` 9 is a cross-sectional
`
`4o capacitive
` touch panel
` according to a second embodiment
` of
`the present
` invention.
`
`3o
`
`35
`
`
`
`45
`
`
`5o
`
`
`55
`
`6o
`
`
` of 65
`
`DETAILED
`
` DESCRIPTION OF THE PREFERRED
`EMBODIMENT
`
` by the preferred
`
`
` can be exemplified
` invention
`
`The present
`
`embodiments
` as described hereinafter.
`First
` Embodiment
` view of a transparent
`
`FIG.
` 4A is a cross-sectional
`
` capaci-
`
` tive
` touch
`
`
`panel
` according
`
`to
` a first
`
`
` embodiment
`of
` the
`present
` invention,
`and
`
` FIG.
` is an exploded
`
` 4B
`
`view
`
` of the
`transparent
` capacitive
` touch panel
`
`
`
` in FIG.
`
`
`4A.
` Referring
`to
`FIG.
` 4A and FIG.
` 4B,
` the transparent
` capacitive
`
` touch panel
`400 of the embodiment comprises a transparent substrate 410,
` a transparent
`
` cover lens
` 420 and a transparent
`
` adhesive
`
` layer
`430.
` The first transparent
`
` electrode
`
` layer 422 and the second
`transparent
`
` electrode
` layer
` 412
`
` are disposed respectively
`on
`
` surfaces
`the
` of the transparent
`
`
`cover
` lens
` 420
` and the trans-
`parent
` substrate 412. A transparent adhesive layer 430 is used
` to bind the first transparent electrode layer 422 and the second
`transparent electrode layer 412 so as to combine the transpar-
`ent
` substrate
`
` 410 and the transparent
` cover
`
` lens
` 420 that
` are
`disposed
` in parallel.
`
`
` oxide
`
` indium-tin
` in which two
` art,
`Compared to the prior
`
` layers
` are formed
` on the surface
` of the transparent
` substrate
`(as
` shown in FIG.
` 2B and FIG.
` 3B),
` in the embodiment,
`the
`second transparent
`
` electrode
` layer 412 and the first transpar-
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`

`

`5
` sur-
` on the
`
`
`formed
` respectively
` are
` 422
`layer
`
` electrode
`ent
` transparent
`
`
` and
`
` the
` of the transparent
`substrate
`
`410
`faces
`
`
` process
`cover lens
` 420.
` Therefore,
` the manufacturing
`
`
` is sim-
`plified and the manufacturing
` yield is enhanced.
`
` com-
`
`410
`In the
` embodiment,
`the
` transparent
`
` substrate
`
`prises
` glass,
` the second transparent
` electrode
`
` layer 412 com-
`
`prises
`
` indium-tin
` oxide,
`
` the transparent
` cover
` lens
`
` 420 com-
`prises glass or plastic,
` and the first transparent
` electrode layer
`422 comprises
` indium-tin
`
` oxide.
` layer 422 and the sec-
`
`Then,
` the first transparent
`
` electrode
`ond transparent
`
` electrode
` layer 412 are disposed facing
`
` each
`other. A liquid-phase transparent adhesive layer 430 is used to
`bind the transparent
`
` substrate
`410
`
` and the transparent
`
` cover
`lens
` 420 disposed in parallel
` to complete the assembly
` of the
`transparent
`
` capacitive
`
` touch panel
` 400.
`As mentioned above,
` the present
` invention is not restricted
`to the
` materials
`used
` for
`
`
` the
` transparent
`substrate
`
`
` 410,
` the
`
`transparent
`cover
`
` 420,
`lens
`
`
` the
` transparent
`
` layer
`adhesive
`
`430,
` the first
` electrode
` transparent
` layer
`
`
` 422 and the second
`transparent
` electrode layer 412.
` For example,
` the transparent
`
`substrate
`410
`
` can
` comprise
` tempered
`
`
` glass;
` the transparent
`
`adhesive
` 430
`
` layer
` can be a double-sided
` adhesive
`
`
` tape;
` and
`the first transparent
` electrode layer 422 and the second trans-
`parent
` electrode
`layer
`
` 412
` can comprise
`
` indium-zinc
`oxide.
`Those
` with ordinary
` skills
`
`
` in the art can make modifications
`according
`
` to the aforesaid
` materials
` within
`
` the
` scope
` of the
`present
` invention.
`
` the second transparent
`
` embodiment,
`
`Moreover,
` in the first
`electrode layer 412 is formed before the formation of the first
`transparent
`
` electrode
`
` layer
` 422.
` However,
`
` the present
`
` inven-
`tion is not restricted to the forming
` order of the first transpar-
`ent
` electrode
`
` layer
` 422
` and the
` second transparent
`
` electrode
`layer
` 412.
`Since the transparent capacitive touch panel 400 comprises
`a single-layer
`structure.
`
` Therefore,
`
`
`compared
` to dual-layer
`
`capacitive
` touch panel
` 100
` (as shown in FIG.
` 1A),
` the trans-
`parent
` capacitive
` touch panel
` 400 of the embodiment
`
` is thin-
`ner and lighter.
` Moreover,
` in the present
`
`
` invention,
` no insu-
`
`lating layer is required.
` Therefore,
` the manufacturing process
`is simplified without using the mask so that the manufacturing
`cost of the transparent
` capacitive touch panel
` 400 is reduced.
`In
` order
`
`to
` prevent
`
`dazzling
` light
`
`
`from
` the
`
` transparent
`capacitive
` touch panel,
` in the embodiment,
`
` an anti-reflection
`
`layer
` is further
`
` disposed
`on the
`
` surface
`
`of the
` transparent
`
`cover
`
`
` lens.
`
` be described
` As will
` hereinafter,
`
`similar
`
`
` labels
`refer to similar
` components.
` transparent
`
` of another
`
`view
`
`FIG.
`
` 5A is a cross-sectional
`capacitive touch panel
` according to a first embodiment
` of the
`present
`
` invention,
`and
`
` FIG.
`
` 5B is an exploded
`view
`
`
` of the
`transparent
` capacitive
` touch panel
`
`
`
`
` in FIG.
`
`5A.
` Referring
`to
`FIG.
` 5A and FIG.
` 5B,
` the transparent
` capacitive
`
` touch panel
`500
` of the present
` embodiment
`
` is similar
`
`
` to the transparent
`capacitive
`
` touch panel
` 400 in FIG.
` 4A except
` that
` the trans-
`parent
` capacitive touch panel 500 further comprises
` two anti-
`reflection
`layers 524 and 526 to reduce the reflected
`light from
`the transparent
` cover
`
` lens
` 420.
`The anti-reflection layers
` 524,526 are respectively formed
`on the surfaces on both sides of the transparent cover lens 420.
`The
` anti-reflection
`layer
`
` 524
` is disposed
` between
`
` the trans-
`parent
` cover lens 420 and the first transparent
` electrode
`
`
` layer
`422, while the anti-reflection layer 526 is disposed on another
`side
` of transparent
`cover
`
` lens
` 420.
` Moreover,
` in the present
`
`embodiment,
`the
` anti-reflection
`
`layers
`
`
` 524,
` 526
` formed
` are
`before
`
`the
` formation
`of the
`
` first
` transparent
` electrode
`
`layer
`422.
` However,
` the present
` embodiment
`
` is not restricted
`to the
`forming
`order
`
` of the anti-reflection
`layers
`
`
` 524,
` 526
` and the
`first
` transparent
`
` electrode
`
` layer
` 422.
`
`4o
`
`45
`
`
`
` 5o
`
`6o
`
`
`65
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`US 8,330,738
`
` B2
`
`10
`
`15
`
`2o
`
`
`25
`
`3o
`
`35
`
`6
` in the art can use only
` skills
` those with ordinary
`
`Moreover,
`the
` anti-reflection
`layer
`
` 524
` or the
` anti-reflection
`layer
` 526
`within
`
` the
` scope
` of the present
` embodiment.
`
`Moreover,
`
` the
`present
` embodiment
` further comprises
`
` a decoration layer for
`
`5 patterning.
`The
` decoration
`
`
`layer
`
` is patterned
`with
` symbols
`
`
`such
`
`as
` a trademark
`and
` texts
`
` as
`
`such
`
` a slogan,
`as will
`
` be
`described hereinafter.
` another transpar-
` view of still
`
`FIG.
` 6A is a cross-sectional
`ent capacitive touch panel
` according to a first embodiment
` of
` the present
` invention,
` and FIG.
`
` 6B is an exploded view of the
`transparent
`
` capacitive
`
`
` touch panel
` in FIG.
`
`
`6A.
` Referring
`to
`FIG.
` 6A and FIG.
` 6B,
` the transparent
` capacitive
`
` touch panel
`600
` of the present
` embodiment
`
` is similar
`
`
` to the transparent
`capacitive
`
` touch panel
` 400
` in FIG.
` 4A except
` that
` the trans-
` parent
` capacitive
`
` touch panel
` 600
` further
` comprises
`
` a deco-
`ration layer 624 and a planarization layer 626.
` The decoration
`layer
`624
`
`
` is patterned
`with
`
` monochromatic
`or
` multi-chro-
`
` matic
` or symbols.
` texts
` is
`624
`
` layer
`
` decoration
`the
`
`In the
` present
` embodiment,
`
` formed on the surface of
`the transparent cover lens 420. Then,
`the decoration layer 624 is planarized to form a planarization
`layer
`626.
`
`
` The decoration
`
`layer
`
`624
` is black
`
`
`or
` any
` other
`
`color.
` decoration
` The
` layer
` can be patterned
` 624
` with texts,
`symbols
` or the like.
`
` Moreover,
` the present
`
`
` embodiment
`can
` also
` do without
`
` the planarization
` 626;
`
` layer
` instead,
` the first
`
`transparent
`electrode
` layer
`
`422
`
` is directly
`
`
`formed
`
` on the
`
`surface of the decoration layer 624. As the planarization layer
`626
` is omitted,
`
`the
` decoration
`
` layer
` 624
` comprises
` an insu-
`
`lating
` material.
` the
`As
`
` planarization
`layer
`
`
`626
` is used,
`the
`
` planarization
`layer
`626
`
`
`
` comprises
`an
` insulating
` material,
`
`while the decoration layer 624 comprises
` an insulating mate-
`rial
` or a conductive
` material.
`inter-
` or electro-magnetic
`
`In order
` to resist
`
` static
` charges
` com-
` touch panel
`
`
` further
`ference,
` the transparent
`
` capacitive
`
`
` interference
`
`the
` from the
` prises
` a shielding
`
`
`layer
` to prevent
` be described hereinafter.
`display
` or the circuit
` board,
`
` as will
`
`FIG.
` 7A is a cross-sectional
` view of still
` another transpar-
`ent capacitive touch panel
` according to a first embodiment
` of
`the present
` invention,
` and FIG.
`
` 7B is an exploded view of the
` transparent
`
` capacitive
`
`
` touch panel
` in FIG.
`
`
`7A.
` Referring
`to
`FIG.
` 7A and FIG.
` 7B,
` the transparent
` capacitive
`
` touch panel
`700
` of the present
` embodiment
`
` is similar
`
`
` to the transparent
`capacitive
`
` touch panel
` 400
` in FIG.
` 4A except
` that
` the trans-
`parent
` capacitive touch panel
` 700 further comprises
` a shield-
`
` ing layer 714 to protect the structure of
`the transparent capaci-
`tive touch panel
` 700.
`of the
` a surface
`on
` is formed
`714
`
`The
` shielding
`
`layer
`
`
`
`
`transparent
` substrate
` 410 that
` is different
` from the other
` sur-
`
`face
` whereon
`
`the
` second
` transparent
`
` electrode
`
`layer
`
` is dis-
`
` posed.
`Since
`
` the
` shielding
`layer
`
` 714
` is capable
` of shielding
`the external
` electro-magnetic
` interference
`
` and preventing
` the
`capacitive touch panel from being interfered by external elec-
`tro-magnetic
`
` interference,
`
` the shielding
`
` layer 714 comprises
`indium-tin
`oxide
`
` or indium-zinc
`
`oxide.
`The
`
`
` shielding
`layer
`55 714 is a meshed
` structure
` and is electrically
` connected to the
`
`ground.
` the decoration layer and the
`Since the anti-reflection layer,
`
`shielding
`layer
`
`
`are
` described
` independently,
`in the
` present
`embodiment,
`however,
` the
`
` anti-reflection
`
`layer,
`the
`
`
` decora-
` tion
`
` layer
`and
` shielding
`
` the
`layer
`can
`
`
` be
` together.
` formed
`
`Those with ordinary
` skills
` can make modifications by adding
`the anti-reflection
`layer,
`
` the decoration
`
`
` layer
` and the shield-
`ing layer to improve
` the quality
`
` of the transparent
` capacitive
`
`touch panel.
` of the present
` touch panel
` capacitive
`Since the transparent
`invention is generally assembled with a liquid-crystal
` display
`(LCD)
` panel
`
`
` comprising
`
`a color
`
` filter,
`
`the
` transparent
`sub-
`
`

`

`7
` invention can be a color filter substrate to
`strate of the present
`reduce the thickness
`
` and weight
` of the transparent
` capacitive
`touch panel
` assembled with a LCD panel.
`Second
` Embodiment
`structure,
` a single-layer
`describes
`The
`
` first
` embodiment
`
`
`wherein
`the
`
` first
` transparent
`
` electrode
`
`layer
` and the
` second
`transparent
` electrode
`
`layer
` are respectively
`
` disposed
`
`
` on the
`surfaces of
`the transparent
` substrate and the transparent cover
`lens.
` In the
`
` present
` embodiment,
`
`
`the
` first
` transparent
`elec-
`trode
`
`layer
`
` and
` the
` second
` transparent
`electrode
`
`
` layer
`
` can
`
`both be manufactured
` on the surface
` of the transparent
` cover
`lens.
` Thereby,
`
` the transparent
` capacitive
`
`
` touch