TW202001520A - Touch panel - Google Patents

Touch panel Download PDF

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TW202001520A
TW202001520A TW107122406A TW107122406A TW202001520A TW 202001520 A TW202001520 A TW 202001520A TW 107122406 A TW107122406 A TW 107122406A TW 107122406 A TW107122406 A TW 107122406A TW 202001520 A TW202001520 A TW 202001520A
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Taiwan
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layer
transparent
touch panel
transparent electrode
panel according
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TW107122406A
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Chinese (zh)
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TWI682311B (en
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魏福呈
廖致霖
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大陸商業成科技（成都）有限公司
大陸商業成光電（深圳）有限公司
英特盛科技股份有限公司
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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
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • 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
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
    • 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
    • G06F2203/04113—Peripheral electrode pattern in resistive digitisers, i.e. electrodes at the periphery of the resistive sheet are shaped in patterns enhancing linearity of induced field

Abstract

The invention discloses a touch panel. The touch panel comprises a transparent substrate, a touch sensing layer, a transparent protection layer and a circular polarization layer; the touch sensing layer is arranged on the transparent substrate, and a plural of grooves are formed on the top of the touch sensing layer; the transparent protection layer is arranged on the touch sensing layer and fillsin the grooves; and the top surface of the transparent protection layer is a flat surface; and the circular polarization layer is arranged on the flat surface of the transparent protection layer. The grooves of the touch sensing layer are filled by using the transparent protection layer, thereby improving the circular polarization effect.

Description

觸控面板Touch panel

本發明係關於一種觸控面板，且特別關於一種以平整化方式提升圓偏光效率之觸控面板。The present invention relates to a touch panel, and particularly to a touch panel that improves circular polarized light efficiency in a flattening manner.

近年來，觸控面板(Touch Panel)已被廣泛地應用至各式各樣之電子產品中，如：全球定位系統(GPS)、個人數位助理(PDA)、行動電話(cellular phone)及掌上型電腦(Hand-held PC)等，以取代傳統之輸入裝置(如：鍵盤及滑鼠等)。此一設計上之大幅改變，不僅提昇了該等電子裝置之人機介面親和性，更因省略了傳統輸入裝置而騰出更多空間，供安裝更大尺寸的顯示面板，方便使用者瀏覽資料。在現有的觸控面板中，因為單層氧化銦錫（SITO）之結構上有複數透明光阻形成複數凹槽，導致結構斷差，進而影響顯示效果。In recent years, the touch panel (Touch Panel) has been widely used in a variety of electronic products, such as: global positioning system (GPS), personal digital assistant (PDA), mobile phone (cellular phone) and handheld Computer (Hand-held PC), etc., to replace traditional input devices (such as: keyboard and mouse, etc.). This drastic change in design not only improves the human-machine interface compatibility of these electronic devices, but also frees up more space due to the omission of traditional input devices for installing larger-sized display panels to facilitate users to browse data . In the existing touch panel, the structure of the single-layer indium tin oxide (SITO) has a plurality of transparent photoresists to form a plurality of grooves, resulting in structural breakage, which further affects the display effect.

因此，本發明係在針對上述的困擾，提出一種觸控面板，以解決習知所產生的問題。Therefore, the present invention proposes a touch panel in order to solve the problems mentioned above in order to solve the problems mentioned above.

本發明的主要目的，在於提供一種觸控面板，其係利用透明保護層填滿觸控感測層之凹槽，以提升圓偏光效果。The main object of the present invention is to provide a touch panel that fills the groove of the touch sensing layer with a transparent protective layer to improve the circular polarized light effect.

為達上述目的，本發明提供一種觸控面板，其係包含一透明基板、一觸控感測層、一透明保護層與一圓偏光層。舉例來說，透明基板之材質為聚对苯二甲酸乙二酯（PET）、無機透明聚醯亞胺（CPI）、玻璃、環烯烴聚合物（COP）、聚偏二氯乙烯（HPVDF）、環狀嵌段共聚物（CBC）或聚碳酸酯（PC），透明保護層為高分子樹脂層或壓克力塗佈層，透明保護層之厚度為3-8微米。觸控感測層設於透明基板上，觸控感測層之頂部具有複數凹槽。透明保護層設於觸控感測層上，並填滿凹槽，透明保護層之頂面為平坦面。圓偏光層設於透明保護層之平坦面上。To achieve the above objective, the present invention provides a touch panel, which includes a transparent substrate, a touch sensing layer, a transparent protective layer and a circular polarizing layer. For example, the material of the transparent substrate is polyethylene terephthalate (PET), inorganic transparent polyimide (CPI), glass, cycloolefin polymer (COP), polyvinylidene chloride (HPVDF), The cyclic block copolymer (CBC) or polycarbonate (PC), the transparent protective layer is a polymer resin layer or an acrylic coating layer, and the thickness of the transparent protective layer is 3-8 microns. The touch sensing layer is disposed on the transparent substrate, and the top of the touch sensing layer has a plurality of grooves. The transparent protective layer is arranged on the touch sensing layer and fills the groove. The top surface of the transparent protective layer is a flat surface. The circular polarizing layer is provided on the flat surface of the transparent protective layer.

在本發明之一實施例中，圓偏光層更包含一四分之一波板與一線偏光層，四分之一波板設於透明保護層之平坦面上，線偏光層設於四分之一波板上。舉例來說，四分之一波板之厚度為1-3微米(um)，線偏光層之厚度為1-3微米。In one embodiment of the present invention, the circular polarizing layer further includes a quarter wave plate and a linear polarizing layer, the quarter wave plate is provided on the flat surface of the transparent protective layer, and the linear polarizing layer is provided on the quarter On a wave board. For example, the thickness of the quarter wave plate is 1-3 microns (um), and the thickness of the linear polarizing layer is 1-3 microns.

在本發明之一實施例中，觸控感測層更包含複數透明電極區塊、一圖案化透明絕緣層與一透明電極層。舉例來說，透明電極區塊為銅或銀之金屬網格(metal mesh)或奈米銀線(AgNWs)，透明電極區塊之材質可為氧化銦錫（ITO）、聚(3,4-乙烯基二氧噻吩)(PEDOT)或奈米碳管(CNT)，圖案化透明絕緣層之材質為透明光阻。透明電極區塊設於透明基板上，並彼此相隔。圖案化透明絕緣層設於透明電極區塊上，並填滿透明電極區塊之間的間隙，圖案化透明絕緣層具有貫穿自身之複數凹洞，以分別露出透明電極區塊。透明電極層設於圖案化透明絕緣層上，並經由凹洞覆蓋透明電極區塊，位於凹洞中的透明電極層之頂面具有凹槽，透明保護層設於透明電極層上。In an embodiment of the invention, the touch sensing layer further includes a plurality of transparent electrode blocks, a patterned transparent insulating layer and a transparent electrode layer. For example, the transparent electrode block is a metal mesh of copper or silver or AgNWs, and the material of the transparent electrode block may be indium tin oxide (ITO), poly(3,4- Vinyl dioxythiophene (PEDOT) or carbon nanotube (CNT), the material of the patterned transparent insulating layer is transparent photoresist. The transparent electrode blocks are arranged on the transparent substrate and are separated from each other. The patterned transparent insulating layer is disposed on the transparent electrode blocks and fills the gaps between the transparent electrode blocks. The patterned transparent insulating layer has a plurality of holes penetrating itself to expose the transparent electrode blocks respectively. The transparent electrode layer is disposed on the patterned transparent insulating layer, and covers the transparent electrode block through the cavity. The top surface of the transparent electrode layer in the cavity has a groove, and the transparent protective layer is disposed on the transparent electrode layer.

茲為使　貴審查委員對本發明的結構特徵及所達成的功效更有進一步的瞭解與認識，謹佐以一實施例圖及配合詳細的說明，說明如後：In order to make your reviewer have a better understanding and understanding of the structural features and achieved effects of the present invention, I would like to use an embodiment diagram and detailed descriptions, the explanations are as follows:

本發明之實施例將藉由下文配合相關圖式進一步加以解說。盡可能的，於圖式與說明書中，相同標號係代表相同或相似構件。於圖式中，基於簡化與方便標示，形狀與厚度可能經過誇大表示。可以理解的是，未特別顯示於圖式中或描述於說明書中之元件，為所屬技術領域中具有通常技術者所知之形態。本領域之通常技術者可依據本發明之內容而進行多種之改變與修改。The embodiments of the present invention will be further explained in the following with the related drawings. As much as possible, in the drawings and the description, the same reference numerals represent the same or similar components. In the drawings, the shape and thickness may be exaggerated for simplicity and convenience. It can be understood that the elements that are not specifically shown in the drawings or described in the specification have a form known to those skilled in the art. Those of ordinary skill in the art can make various changes and modifications according to the content of the present invention.

以下請參閱第1圖， 以介紹本發明之觸控面板。觸控面板包含一透明基板36、一觸控感測層38、一透明保護層40與一圓偏光層41。觸控感測層38可為多點式觸控感測層。舉例來說，透明基板36可選擇雙折射率材質，即減速度(Re，Retardation)大於5之材質，當入射的偏振光產生相互垂直的兩束具有相位差的偏光時，此相位差係定義為Re。此雙折射率材質為聚对苯二甲酸乙二酯（PET）或無機透明聚醯亞胺（CPI）。此外，透明基板36亦可選擇無雙折射率材質，即Re小於5。此無雙折射率材質為玻璃、環烯烴聚合物（COP）、聚偏二氯乙烯（HPVDF）、環狀嵌段共聚物（CBC）或聚碳酸酯（PC）。透明保護層40為高分子樹脂層或壓克力塗佈層，高分子樹脂層可為正型光阻或負型光阻。透明保護層40之厚度h為3-8微米，穿透率大於80％，表面張力大於40達因(dyne)，接觸角小於40度。觸控感測層38設於透明基板36上，觸控感測層38之頂部具有複數凹槽46。透明保護層40設於觸控感測層38上，並填滿凹槽46，透明保護層40之頂面為平坦面。圓偏光層41設於透明保護層40之平坦面上。圓偏光層41更包含一四分之一波板42與一線偏光層44。四分之一波板42之厚度為1-3微米(um)，四分之一波板42由旋光性高分子塗佈而成。線偏光層44之厚度為1-3微米，線偏光層44為液晶塗佈構成光柵。四分之一波板42與線偏光層44之偏光角度為45度，偏光度達80％～99.5％，穿透率為33％～45％。四分之一波板42設於透明保護層40之平坦面上，線偏光層44設於四分之一波板42上。由於四分之一波板42與線偏光層44之厚度皆為均勻，又設置在透明保護層40之平坦面上，故最上層之線偏光層44的頂面亦為平坦面，藉此可提高圓偏光效率。Please refer to FIG. 1 below to introduce the touch panel of the present invention. The touch panel includes a transparent substrate 36, a touch sensing layer 38, a transparent protective layer 40 and a circular polarizing layer 41. The touch sensing layer 38 may be a multi-point touch sensing layer. For example, the transparent substrate 36 may select a birefringent material, that is, a material with a deceleration (Re, Retardation) greater than 5. When the incident polarized light generates two beams of polarized light that are perpendicular to each other, the phase difference is defined For Re. The birefringence material is polyethylene terephthalate (PET) or inorganic transparent polyimide (CPI). In addition, the transparent substrate 36 can also choose a material without birefringence, that is, Re is less than 5. This birefringence-free material is glass, cycloolefin polymer (COP), polyvinylidene chloride (HPVDF), cyclic block copolymer (CBC) or polycarbonate (PC). The transparent protective layer 40 is a polymer resin layer or an acrylic coating layer. The polymer resin layer may be a positive photoresist or a negative photoresist. The thickness h of the transparent protective layer 40 is 3-8 microns, the penetration rate is greater than 80%, the surface tension is greater than 40 dyne, and the contact angle is less than 40 degrees. The touch sensing layer 38 is disposed on the transparent substrate 36, and the top of the touch sensing layer 38 has a plurality of grooves 46. The transparent protective layer 40 is disposed on the touch sensing layer 38 and fills the groove 46. The top surface of the transparent protective layer 40 is a flat surface. The circular polarizing layer 41 is provided on the flat surface of the transparent protective layer 40. The circular polarizing layer 41 further includes a quarter-wave plate 42 and a linear polarizing layer 44. The thickness of the quarter-wave plate 42 is 1-3 micrometers (um), and the quarter-wave plate 42 is coated with an optically active polymer. The thickness of the linear polarizing layer 44 is 1-3 microns, and the linear polarizing layer 44 is coated with liquid crystal to form a grating. The polarization angle of the quarter-wave plate 42 and the linear polarizing layer 44 is 45 degrees, the polarization degree is 80%-99.9%, and the transmittance is 33%-45%. The quarter wave plate 42 is provided on the flat surface of the transparent protective layer 40, and the linear polarizing layer 44 is provided on the quarter wave plate 42. Since the thicknesses of the quarter wave plate 42 and the linear polarizing layer 44 are uniform, and are provided on the flat surface of the transparent protective layer 40, the top surface of the uppermost linear polarizing layer 44 is also a flat surface, thereby Improve circular polarization efficiency.

觸控感測層38更包含複數透明電極區塊48、一圖案化透明絕緣層50與一透明電極層52。舉例來說，透明電極區塊48可為銅或銀之金屬網格(metal mesh)或奈米銀線(AgNWs)，或者，透明電極區塊48之材質可為氧化銦錫（ITO）、聚(3,4-乙烯基二氧噻吩)(PEDOT)或奈米碳管(CNT)，圖案化透明絕緣層50之材質為透明光阻。透明電極區塊48設於透明基板36上，並彼此相隔。圖案化透明絕緣層50設於透明電極區塊48上，並填滿透明電極區塊48之間的間隙54，圖案化透明絕緣層50具有貫穿自身之複數凹洞56，以分別露出透明電極區塊48。透明電極層52設於圖案化透明絕緣層50上，並經由凹洞56覆蓋透明電極區塊48，位於凹洞56中的透明電極層52之頂面具有凹槽46，透明保護層40設於透明電極層52上。The touch sensing layer 38 further includes a plurality of transparent electrode blocks 48, a patterned transparent insulating layer 50 and a transparent electrode layer 52. For example, the transparent electrode block 48 may be a copper or silver metal mesh or silver silver wire (AgNWs), or the material of the transparent electrode block 48 may be indium tin oxide (ITO), poly (3,4-vinyldioxythiophene) (PEDOT) or carbon nanotube (CNT), the material of the patterned transparent insulating layer 50 is a transparent photoresist. The transparent electrode blocks 48 are disposed on the transparent substrate 36 and are separated from each other. The patterned transparent insulating layer 50 is disposed on the transparent electrode block 48 and fills the gap 54 between the transparent electrode blocks 48. The patterned transparent insulating layer 50 has a plurality of recesses 56 penetrating itself to expose the transparent electrode areas respectively Block 48. The transparent electrode layer 52 is disposed on the patterned transparent insulating layer 50 and covers the transparent electrode block 48 through the cavity 56. The top surface of the transparent electrode layer 52 in the cavity 56 has a groove 46, and the transparent protective layer 40 is disposed on On the transparent electrode layer 52.

以下請參閱第2圖， 以介紹本發明之觸控顯示裝置，其由下而上包含一發光模組58、一光學膠層60、透明基板36、多點觸控感測層38、透明保護層40、四分之一波板42、線偏光層44、一光學膠層62、一遮光層64與一玻璃蓋板66。因為透明保護層40的關係，導致觸控顯示裝置有良好的顯示效果。Please refer to FIG. 2 below to introduce the touch display device of the present invention, which includes a light emitting module 58, an optical adhesive layer 60, a transparent substrate 36, a multi-touch sensing layer 38, and a transparent protection from bottom to top Layer 40, quarter wave plate 42, linear polarizing layer 44, an optical adhesive layer 62, a light shielding layer 64 and a glass cover 66. Because of the relationship between the transparent protective layer 40, the touch display device has a good display effect.

綜上所述，本發明利用透明保護層填滿觸控感測層之凹槽，以提升圓偏光效果。In summary, the present invention fills the groove of the touch sensing layer with a transparent protective layer to improve the circular polarized light effect.

以上所述者，僅為本發明一較佳實施例而已，並非用來限定本發明實施之範圍，故舉凡依本發明申請專利範圍所述之形狀、構造、特徵及精神所為之均等變化與修飾，均應包括於本發明之申請專利範圍內。The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the implementation of the present invention. Therefore, all changes and modifications based on the shape, structure, features and spirit described in the patent application scope of the present invention are cited. , Should be included in the scope of the patent application of the present invention.

36‧‧‧透明基板38‧‧‧觸控感測層40‧‧‧透明保護層41‧‧‧圓偏光層42‧‧‧四分之一波板44‧‧‧線偏光層46‧‧‧凹槽48‧‧‧透明電極區塊50‧‧‧圖案化透明絕緣層52‧‧‧透明電極層54‧‧‧間隙56‧‧‧凹洞58‧‧‧發光模組60‧‧‧光學膠層62‧‧‧光學膠層64‧‧‧遮光層66‧‧‧玻璃蓋板36‧‧‧Transparent substrate 38‧‧‧Touch sensing layer 40‧‧‧Transparent protective layer 41‧‧‧Circular polarizing layer 42‧‧‧Quarter wave plate 44‧‧‧Linear polarizing layer 46‧‧‧ Groove 48‧‧‧Transparent electrode block 50‧‧‧ Patterned transparent insulating layer 52‧‧‧Transparent electrode layer 54‧‧‧Gap 56‧‧‧Concave 58‧‧‧‧Light module 60‧‧‧Optical adhesive Layer 62‧‧‧Optical glue layer 64‧‧‧Shading layer 66‧‧‧Glass cover

第1圖為本發明之觸控面板之一實施例之結構剖視圖。 第2圖為本發明之觸控顯示裝置之一實施例之結構剖視圖。FIG. 1 is a structural cross-sectional view of an embodiment of a touch panel of the present invention. FIG. 2 is a structural cross-sectional view of an embodiment of a touch display device of the present invention.

36‧‧‧透明基板 36‧‧‧Transparent substrate

38‧‧‧觸控感測層 38‧‧‧Touch sensing layer

40‧‧‧透明保護層 40‧‧‧Transparent protective layer

41‧‧‧圓偏光層 41‧‧‧Circular polarizing layer

42‧‧‧四分之一波板 42‧‧‧ quarter wave plate

44‧‧‧線偏光層 44‧‧‧Linear polarizing layer

46‧‧‧凹槽 46‧‧‧groove

48‧‧‧透明電極區塊 48‧‧‧Transparent electrode block

50‧‧‧圖案化透明絕緣層 50‧‧‧ Patterned transparent insulating layer

52‧‧‧透明電極層 52‧‧‧Transparent electrode layer

54‧‧‧間隙 54‧‧‧Gap

56‧‧‧凹洞 56‧‧‧Cavities

Claims (9)

一種觸控面板，包含： 一透明基板； 一觸控感測層，設於該透明基板上，該觸控感測層之頂部具有複數凹槽； 一透明保護層，設於該觸控感測層上，並填滿該些凹槽，該透明保護層之頂面為平坦面；以及 一圓偏光層，設於該透明保護層之該平坦面上。A touch panel includes: a transparent substrate; a touch sensing layer provided on the transparent substrate, a plurality of grooves on the top of the touch sensing layer; a transparent protective layer provided on the touch sensing The top surface of the transparent protective layer is a flat surface; and a circular polarizing layer is provided on the flat surface of the transparent protective layer. 如請求項1所述之觸控面板，其中該觸控感測層更包含： 複數透明電極區塊，設於該透明基板上，並彼此相隔； 一圖案化透明絕緣層，設於該些透明電極區塊上，並填滿該些透明電極區塊之間的間隙，該圖案化透明絕緣層具有貫穿自身之複數凹洞，以分別露出該些透明電極區塊；以及 一透明電極層，設於該圖案化透明絕緣層上，並經由該些凹洞覆蓋該些透明電極區塊，位於該些凹洞中的該透明電極層之頂面具有該些凹槽，該透明保護層設於該透明電極層上。The touch panel according to claim 1, wherein the touch sensing layer further comprises: a plurality of transparent electrode blocks provided on the transparent substrate and separated from each other; a patterned transparent insulating layer provided on the transparent On the electrode blocks, and fill the gaps between the transparent electrode blocks, the patterned transparent insulating layer has a plurality of recesses penetrating itself to expose the transparent electrode blocks; and a transparent electrode layer, provided On the patterned transparent insulating layer, and covering the transparent electrode blocks through the recesses, the transparent electrode layer located in the recesses has the grooves on the top surface, and the transparent protective layer is disposed on the On the transparent electrode layer. 觸控如請求項1所述之觸控面板，其中該些透明電極區塊之材質為氧化銦錫（ITO）、聚(3,4-乙烯基二氧噻吩)(PEDOT)或奈米碳管(CNT)。Touch The touch panel according to claim 1, wherein the materials of the transparent electrode blocks are indium tin oxide (ITO), poly(3,4-vinyldioxythiophene) (PEDOT) or carbon nanotubes (CNT). 觸控如請求項1所述之觸控面板，其中該透明基板之材質為聚对苯二甲酸乙二酯（PET）、無機透明聚醯亞胺（CPI）、玻璃、環烯烴聚合物（COP）、聚偏二氯乙烯（HPVDF）、環狀嵌段共聚物（CBC）或聚碳酸酯（PC）。Touch The touch panel according to claim 1, wherein the material of the transparent substrate is polyethylene terephthalate (PET), inorganic transparent polyimide (CPI), glass, cycloolefin polymer (COP ), polyvinylidene chloride (HPVDF), cyclic block copolymer (CBC) or polycarbonate (PC). 如請求項1所述之觸控面板，其中該圓偏光層更包含： 一四分之一波板，設於該透明保護層之該平坦面上；以及 一線偏光層，設於該四分之一波板上。The touch panel according to claim 1, wherein the circular polarizing layer further comprises: a quarter wave plate provided on the flat surface of the transparent protective layer; and a linear polarizing layer provided on the quarter On a wave board. 如請求項5所述之觸控面板，其中該四分之一波板之厚度為1-3微米(um)。The touch panel according to claim 5, wherein the thickness of the quarter-wave plate is 1-3 micrometers (um). 如請求項5所述之觸控面板，其中該線偏光層之厚度為1-3微米。The touch panel according to claim 5, wherein the thickness of the linear polarizing layer is 1-3 microns. 如請求項1所述之觸控面板，其中該透明保護層為高分子樹脂層或壓克力塗佈層。The touch panel according to claim 1, wherein the transparent protective layer is a polymer resin layer or an acrylic coating layer. 如請求項1所述之觸控面板，其中該透明保護層之厚度為3-8微米。The touch panel according to claim 1, wherein the thickness of the transparent protective layer is 3-8 microns.
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