TWI553797B - Lid-pressing type semiconductor package and method for manufacturing the same - Google Patents
Lid-pressing type semiconductor package and method for manufacturing the same Download PDFInfo
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Description
本發明係有關於兩基板壓合形式的半導體封裝領域,特別係有關於一種加蓋壓合式半導體封裝構造及其製造方法,可應用於影像感測晶片、光電晶片、微機電晶片、積體電路晶片等晶片之封裝技術,並可適用於晶片尺寸封裝構造(Chip Scale Package,CSP)、扇出型晶圓級封裝構造(Fan-Out Wafer Level Package,FOWLP)、球格陣列封裝構造(BGA package)等封裝型態。 The present invention relates to the field of semiconductor package in the form of two substrates, and particularly relates to a capped laminated semiconductor package structure and a manufacturing method thereof, which can be applied to an image sensing wafer, an optoelectronic wafer, a microelectromechanical wafer, an integrated circuit. Wafer encapsulation technology for wafers, etc., and can be applied to Chip Scale Package (CSP), Fan-Out Wafer Level Package (FOWLP), and ball grid array package structure (BGA package) ) and other package types.
在工業製造中,兩基板的壓貼黏合是極為普遍使用到的技術。而在半導體封裝製程中也會使用到相關技術,不同其它產業,依據產品需求不同,需要壓貼黏合的兩硬質基板可能是玻璃對晶圓的壓合,也有可能是晶圓對晶圓的壓合、玻璃對晶圓或面板型態半導體封裝片的壓合、兩相同尺寸的晶圓或面板型態半導體封裝片的壓合、金屬散熱片對晶圓的壓合…等等不一。通常設置有主動元件的一基板壓合面係形成為一非平坦面,壓合其上的另一基板壓合面係形成為一平坦面,黏著層不易流佈非平坦面的凹凸區域,故會在非平坦面產生不規格且不受控制之孔隙。而基板壓貼之後,半導體封裝製程後續可能還有晶背研磨、鑽孔、 氣相沉積、電鍍、蝕刻、模封灌膠、單體化切割等等後製程步驟,不規則孔隙會引起團塊狀大面積無效黏著區的擴大,導致封裝不良品的增加。 In industrial manufacturing, press-bonding of two substrates is a technique that is extremely commonly used. In the semiconductor packaging process, related technologies are also used. Different industries, depending on the product requirements, the two rigid substrates that need to be bonded and bonded may be glass-to-wafer bonding, or may be wafer-to-wafer pressing. The bonding of the glass-to-wafer or panel-type semiconductor package sheet, the bonding of two wafers or panel-type semiconductor package sheets of the same size, and the press-fitting of the metal heat sink to the wafer are different. Generally, a substrate pressing surface provided with an active element is formed as a non-flat surface, and another substrate pressing surface pressed thereon is formed into a flat surface, and the adhesive layer is not easy to flow uneven portions of the non-flat surface, so Produces irregular and uncontrolled pores on non-flat surfaces. After the substrate is pressed, the semiconductor package process may be followed by crystal back grinding, drilling, After the process steps of vapor deposition, electroplating, etching, mold-sealing, singulation, etc., irregular pores may cause an enlargement of a large area of ineffective adhesive regions, resulting in an increase in defective packages.
已知包含CIS影像感測晶片的晶圓與玻璃片的壓合黏合需要使用到圖案化黏著層。當晶圓主動面的表面高低落差越大,在晶圓與玻璃片之間的黏著層越容易形成孔隙。而影響表面高低落差的因素有可能是表面保護層的圖案開孔、銲墊、微透鏡(microlens)、彩色過濾器(color filter)或切割道本身下陷(預切下陷)。 It is known that the press bonding of a wafer containing a CIS image sensing wafer to a glass sheet requires the use of a patterned adhesive layer. When the surface height difference of the wafer active surface is larger, the adhesion layer between the wafer and the glass sheet is more likely to form voids. The factors affecting the surface height drop may be the pattern opening of the surface protective layer, the pad, the microlens, the color filter or the dicing itself itself (precut sag).
為了解決上述之問題,本發明之主要目的係在於提供一種加蓋壓合式半導體封裝構造及其製造方法,藉以防止兩疊壓板之間的不規則孔隙產生,進而消除在後封裝製程中團塊狀大面積無效黏著區的形成可能。 In order to solve the above problems, the main object of the present invention is to provide a capped laminated semiconductor package structure and a manufacturing method thereof, thereby preventing generation of irregular voids between two stacked press plates, thereby eliminating agglomerates in the post-packaging process. The formation of large areas of ineffective adhesive areas is possible.
本發明之次一目的係在於提供一種加蓋壓合式半導體封裝構造及其製造方法,可藉由不同的黏著層形狀設計來因應不同區域的高低落差以改善壓合完成後的縫隙產生。 A second object of the present invention is to provide a capped press-fit semiconductor package structure and a method of fabricating the same, which can be designed to meet the gap between different regions to improve the gap generation after the press-fitting is completed by different adhesive layer shape designs.
本發明的目的及解決其技術問題是採用以下技術方案來實現的。本發明揭示一種加蓋壓合式半導體封裝構造,包含一元件基板、一黏著層以及一疊壓板。該元件基板係具有一非平坦面,該非平坦面上係形成有複數個凸區。該黏著層係形成於該非平坦面上,該黏著層係覆蓋該些凸區,該黏著層係為壓合前圖 案化而具有複數個第一氣囊孔,該些第一氣囊孔係不重疊於該些凸區而排列在該些凸區之周圍,或者在不同實施例中,該黏著層係覆蓋一凹區並使該些第一氣囊孔對準於該些凸區。該疊壓板係具有一平坦面,以該平坦面面向該非平坦面的壓合方式使得該疊壓板係黏合於該元件基板上之該黏著層,其中該黏著層對該非平坦面之一第一黏著面積係大於該黏著層對該平坦面之一第二黏著面積。本發明另揭示上述加蓋壓合式半導體封裝構造之製造方法。 The object of the present invention and solving the technical problems thereof are achieved by the following technical solutions. The present invention discloses a capped laminated semiconductor package structure comprising an element substrate, an adhesive layer and a stack of pressure plates. The element substrate has a non-flat surface on which a plurality of convex regions are formed. The adhesive layer is formed on the non-flat surface, and the adhesive layer covers the convex regions, and the adhesive layer is a pressed front view Forming a plurality of first airbag apertures, the first airbag apertures are arranged not to overlap the convex regions and are arranged around the convex regions, or in different embodiments, the adhesive layer covers a concave region And aligning the first airbag holes with the convex regions. The laminated plate has a flat surface, and the flat surface is pressed against the non-flat surface such that the laminated plate is adhered to the adhesive layer on the element substrate, wherein the adhesive layer is first adhered to one of the non-flat surfaces The area is greater than the second adhesion area of the adhesive layer to one of the flat faces. The present invention further discloses a method of fabricating the above-described capping-type semiconductor package structure.
本發明的目的及解決其技術問題還可採用以下技術措施進一步實現。 The object of the present invention and solving the technical problems thereof can be further achieved by the following technical measures.
在前述加蓋壓合式半導體封裝構造中,該非平坦面係可包含一元件設置區,該黏著層係可更具有一窗形孔,以顯露該元件設置區,該黏著層係可更具有複數個第二氣囊孔,該些第二氣囊孔係可不重疊於該元件設置區而排列在該窗形孔之周圍。 In the above-mentioned capping-type semiconductor package structure, the non-flat surface may include a component mounting region, and the adhesive layer may further have a window-shaped hole to expose the component mounting region, and the adhesive layer may have a plurality of The second airbag apertures may be arranged around the window apertures without overlapping the component placement area.
在前述加蓋壓合式半導體封裝構造中,該元件設置區係可包含複數個影像感測元件,該疊壓板係可為一透光片。 In the capping-fit semiconductor package structure, the component mounting region may include a plurality of image sensing components, and the laminated plate may be a light transmissive sheet.
在前述加蓋壓合式半導體封裝構造中,該元件設置區係可形成於該元件基板之一第一凹區上,該非平坦面之周緣係可形成為一第二凹區,該第二凹區係更下凹於該第一凹區。 In the capping-fit semiconductor package structure, the component mounting region may be formed on a first recessed area of the component substrate, and the periphery of the non-flat surface may be formed as a second recessed region, the second recessed region The system is further recessed in the first recessed area.
在前述加蓋壓合式半導體封裝構造中,該些凸區係可由複數個突出電極所形成,該元件基板係可更具有複數個縱向導通機構,其係由該元件基板之一非壓合面電性導通至該些突出 電極。 In the capping-type semiconductor package structure, the lands may be formed by a plurality of protruding electrodes, and the device substrate may further have a plurality of longitudinal conducting mechanisms, wherein the one of the component substrates is non-compressed Sexual conduction to these prominent electrode.
在前述加蓋壓合式半導體封裝構造中,該元件基板係可選自於影像感測晶片、光電晶片、微機電晶片、晶片尺寸封裝體、扇出型晶圓等級封裝體、積體電路基板與線路基板之其中之一,該疊壓板係可選自於玻璃片、金屬片、晶片與預模晶片體之其中之一。 In the capping-type semiconductor package structure, the device substrate may be selected from the group consisting of an image sensing wafer, an optoelectronic chip, a microelectromechanical wafer, a wafer size package, a fan-out wafer level package, an integrated circuit substrate, and One of the circuit substrates, the laminated plate may be selected from one of a glass sheet, a metal sheet, a wafer and a pre-formed wafer body.
在前述加蓋壓合式半導體封裝構造中,該些第一氣囊孔係具體地為橢圓形孔。 In the capping-fit semiconductor package structure described above, the first balloon holes are specifically elliptical holes.
在前述加蓋壓合式半導體封裝構造中,該些第一氣囊孔內氣壓係可不大於一大氣壓。 In the capping-fit semiconductor package structure, the air pressure in the first air bag holes may be no more than one atmosphere.
藉由上述的技術手段,在一具體應用中,本發明可以了解如裝置晶圓(device wafer)的第一基板上高低不同的區域,其係為包含主動元件之非平坦面,如晶圓主動面,經由光罩的設計將最高處或非凹陷區的黏著層圖形設計為開孔,而最低處或較低凹區則不需要特殊圖形的開孔。在半導體封裝製程的基板壓合步驟之前,可將如貼膜之黏著層係貼附於如裝置晶圓的第一基板之非平坦面上,或是可經由旋塗(spin coating)將黏著層覆蓋在裝置晶圓上,再經由曝光顯影之黃光製程,將覆蓋不同高低位置的黏著層圖形顯影出來,進一步係可將玻璃壓合在此黏著層上,由於此黏著層或具有黏性與流動性,故壓合時可將原本裝置晶圓(device wafer)的高低不同處經由黏著層的圖形搭配而良好覆蓋,則不會有孔隙產生。 According to the above technical means, in a specific application, the present invention can understand different regions on the first substrate such as a device wafer, which are non-flat surfaces including active components, such as wafer active. The design of the adhesive layer of the highest or non-recessed area is designed as an opening through the design of the reticle, and the opening of the special pattern is not required in the lowest or lower concave area. Before the substrate bonding step of the semiconductor packaging process, the adhesive layer such as the film may be attached to the non-flat surface of the first substrate such as the device wafer, or the adhesive layer may be covered by spin coating. On the device wafer, through the yellowing process of exposure and development, the adhesive layer pattern covering different heights and positions is developed, and further, the glass can be pressed onto the adhesive layer, because the adhesive layer is viscous and flowing. Therefore, when the pressing is performed, the difference between the height of the original device wafer and the pattern of the adhesive layer can be well covered, and no voids are generated.
10‧‧‧第一基板 10‧‧‧First substrate
11‧‧‧切割道 11‧‧‧ cutting road
20‧‧‧第二基板 20‧‧‧second substrate
100‧‧‧加蓋壓合式半導體封裝構造 100‧‧‧Capped press-fit semiconductor package construction
110‧‧‧元件基板 110‧‧‧ element substrate
111‧‧‧非平坦面 111‧‧‧ non-flat surface
112‧‧‧凸區 112‧‧‧ convex area
113‧‧‧元件設置區 113‧‧‧Component setting area
114‧‧‧第一凹區 114‧‧‧First pit
115‧‧‧第二凹區 115‧‧‧second recess
116‧‧‧非壓合面 116‧‧‧Non-pressed surface
117‧‧‧縱向導通機構 117‧‧‧Longitudinal conduction mechanism
118‧‧‧導電金屬層 118‧‧‧ Conductive metal layer
119‧‧‧突出電極 119‧‧‧ protruding electrode
120‧‧‧黏著層 120‧‧‧Adhesive layer
121‧‧‧第一氣囊孔 121‧‧‧First airbag hole
122‧‧‧第二氣囊孔 122‧‧‧Second airbag hole
123‧‧‧窗形孔 123‧‧‧Window hole
130‧‧‧疊壓板 130‧‧‧Laminated plate
131‧‧‧平坦面 131‧‧‧flat surface
141‧‧‧內絕緣層 141‧‧‧Insulation
142‧‧‧面向保護層 142‧‧‧ facing the protective layer
143‧‧‧背向保護層 143‧‧‧Back protective layer
150‧‧‧外接端子 150‧‧‧External terminals
151‧‧‧導電接合層 151‧‧‧Electrical bonding layer
200‧‧‧加蓋壓合式半導體封裝構造 200‧‧‧Capped press-fit semiconductor package construction
215‧‧‧凹區 215‧‧‧ recessed area
221‧‧‧第一氣囊孔 221‧‧‧First airbag hole
260‧‧‧封膠體 260‧‧‧ Sealant
第1圖:依據本發明之一第一較佳實施例,一種加蓋壓合式半導體封裝構造之截面示意圖。 1 is a cross-sectional view showing a capped laminated semiconductor package structure in accordance with a first preferred embodiment of the present invention.
第2圖:依據本發明之一第一較佳實施例,該加蓋壓合式半導體封裝構造之黏著層在非平坦面上之俯視示意圖。 2 is a top plan view of an adhesive layer of the capped press-fit semiconductor package structure on a non-flat surface in accordance with a first preferred embodiment of the present invention.
第3A至3K圖:依據本發明之一第一較佳實施例,繪示在該加蓋壓合式半導體封裝構造之製造方法中各主要步驟之元件截面示意圖。 3A to 3K are views showing a cross-sectional view of an element in each main step of the method of manufacturing the capped laminated semiconductor package structure according to a first preferred embodiment of the present invention.
第4圖:依據本發明之一第一較佳實施例,繪示在第3C圖中黏著層覆蓋區域之元件上視圖。 Figure 4 is a top plan view of the component of the adhesive layer covering area in Figure 3C, in accordance with a first preferred embodiment of the present invention.
第5圖:依據本發明之一第二較佳實施例,另一種加蓋壓合式半導體封裝構造之截面示意圖。 Figure 5 is a cross-sectional view showing another capped laminated semiconductor package structure in accordance with a second preferred embodiment of the present invention.
第6圖:依據本發明之一第二較佳實施例,該加蓋壓合式半導體封裝構造之黏著層在非平坦面上之俯視示意圖。 Figure 6 is a top plan view showing the adhesive layer of the captive laminated semiconductor package structure on a non-flat surface in accordance with a second preferred embodiment of the present invention.
以下將配合所附圖示詳細說明本發明之實施例,然應注意的是,該些圖示均為簡化之示意圖,僅以示意方法來說明本發明之基本架構或實施方法,故僅顯示與本案有關之元件與組合關係,圖中所顯示之元件並非以實際實施之數目、形狀、尺寸做等比例繪製,某些尺寸比例與其他相關尺寸比例或已誇張或是簡化處理,以提供更清楚的描述。實際實施之數目、形狀及尺寸 比例為一種選置性之設計,詳細之元件佈局可能更為複雜。 The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in which FIG. The components and combinations related to this case, the components shown in the figure are not drawn in proportion to the actual number, shape and size of the actual implementation. Some size ratios are proportional to other related sizes or have been exaggerated or simplified to provide clearer description of. Number, shape and size of actual implementation The ratio is an optional design, and the detailed component layout may be more complicated.
依據本發明之第一較佳實施例,一種加蓋壓合式半導體封裝構造100舉例說明於第1圖之截面示意圖以及第2圖之黏著層在非平坦面上之俯視示意圖。該加蓋壓合式半導體封裝構造100係包含一元件基板110、一黏著層120以及一疊壓板130。 In accordance with a first preferred embodiment of the present invention, a capped press-fit semiconductor package structure 100 is illustrated in a cross-sectional view of FIG. 1 and a top plan view of the adhesive layer of FIG. 2 on a non-flat surface. The capped press-fit semiconductor package structure 100 includes an element substrate 110, an adhesive layer 120, and a stack of press plates 130.
請參閱第1圖,該元件基板110係具有一非平坦面111,該非平坦面111上係形成有複數個凸區112。該疊壓板130係具有一平坦面131。該元件基板110係可選自於影像感測晶片、光電晶片、微機電晶片、晶片尺寸封裝體、扇出型晶圓等級封裝體、積體電路基板與線路基板之其中之一,該疊壓板130係可選自於玻璃片、金屬片、晶片與預模晶片體之其中之一。在本實施例中,該元件基板110係為影像感測晶片,該疊壓板130係玻璃片。 Referring to FIG. 1 , the element substrate 110 has a non-flat surface 111 on which a plurality of convex regions 112 are formed. The laminated plate 130 has a flat surface 131. The component substrate 110 can be selected from one of an image sensing wafer, an optoelectronic wafer, a microelectromechanical wafer, a wafer size package, a fan-out wafer level package, an integrated circuit substrate, and a circuit substrate. The 130 series may be selected from one of a glass sheet, a metal sheet, a wafer, and a pre-formed wafer body. In the embodiment, the element substrate 110 is an image sensing wafer, and the laminated plate 130 is a glass piece.
通常該元件基板110係包含積體電路、影像感測元件、光電元件、或微機電元件等主動元件,其係形成於該非平坦面111之一元件設置區113,特別地,該元件設置區113係可包含複數個具微鏡結構之影像感測元件,該疊壓板130係可為一透光片。故該非平坦面111為不可平坦化處理。該元件基板110之主體係可為一半導體基板,在本實施例中,除了主動元件,該非平坦面111係更形成有一內絕緣層141、一面向保護層142、複數個銲墊,而使該非平坦面111具有高低不同的區域。 Generally, the element substrate 110 includes an active element such as an integrated circuit, an image sensing element, a photoelectric element, or a microelectromechanical element, which is formed in one of the element setting regions 113 of the non-flat surface 111, and in particular, the element setting region 113 The image sensing component can be a plurality of micro-mirror structures, and the lamination plate 130 can be a light transmissive sheet. Therefore, the uneven surface 111 is not flattenable. The main system of the component substrate 110 can be a semiconductor substrate. In this embodiment, in addition to the active component, the non-planar surface 111 is further formed with an inner insulating layer 141, a protective layer 142, and a plurality of pads. The flat surface 111 has regions of different heights.
該些凸區112係可由該些突出電極119所形成,例如突出於該面向保護層142之複數個銲墊,可供電性檢測。更具體 地,該元件設置區113係可形成於該元件基板110之一第一凹區114上,該非平坦面111之周緣係形成為一第二凹區115,該第二凹區115係更下凹於該第一凹區114。 The lands 112 may be formed by the protruding electrodes 119, for example, protruding from the plurality of pads facing the protective layer 142 for power supply detection. more detail The component placement region 113 is formed on one of the first recesses 114 of the component substrate 110. The periphery of the non-planar surface 111 is formed as a second recess 115, and the second recess 115 is further recessed. In the first recess 114.
該元件基板110係可更具有複數個如導電貫孔之縱向導通機構117,其係由該元件基板110之一非壓合面116電性導通至該些突出電極119。在本實施例中,該些縱向導通機構117係為矽穿孔(TSV)。而該非壓合面116係形成有一導電金屬層118,其係電性導接該些縱向導通機構117。例如一絕緣的背向保護層143係覆蓋該非壓合面116與該導電金屬層118之線路,但不覆蓋該導電金屬層118之連接墊。一導電接合層151係更形成於該導電金屬層118之連接墊上,以供接合複數個銲球之外接端子150,或者,一IC控制晶片或記憶體晶片亦可接合至該導電金屬層118之連接墊。 The element substrate 110 can further have a plurality of longitudinal conduction mechanisms 117, such as conductive vias, electrically connected to the protruding electrodes 119 by one of the non-compression surfaces 116 of the element substrate 110. In the present embodiment, the longitudinal conduction mechanisms 117 are meandering through holes (TSV). The non-pressing surface 116 is formed with a conductive metal layer 118 electrically connected to the longitudinal conducting mechanisms 117. For example, an insulating back protective layer 143 covers the lines of the non-compression surface 116 and the conductive metal layer 118, but does not cover the connection pads of the conductive metal layer 118. A conductive bonding layer 151 is further formed on the connection pad of the conductive metal layer 118 for bonding a plurality of solder balls to the terminal 150, or an IC control wafer or a memory chip may be bonded to the conductive metal layer 118. Connection pad.
請參閱第1及2圖,該黏著層120係形成於該非平坦面111上,該黏著層120係為感光性黏性膠體。該黏著層120係覆蓋該些凸區112,該黏著層120係為壓合前圖案化而具有複數個第一氣囊孔121,該些第一氣囊孔121係不重疊於該些凸區112而排列在該些凸區112之周圍(如第2圖所示)。該些第一氣囊孔121係具有防止壓合孔隙不規則擴大與吸收突發應力的作用,更重要的是貼近該些凸區112,該些第一氣囊孔121距離鄰近該些凸區112之水平距離應不大於該些凸區112在同一水平向的長度或寬度,當排列有兩個以上的凸區112時,至少一個第一氣囊孔121可設置於 該兩凸區112之間(如第2圖所示)。在本實施例中,該些第一氣囊孔121係可為橢圓形孔,故具有較佳的孔隙與應力吸收的效果。而在壓合黏接之後,該些第一氣囊孔121內氣壓係可不大於一大氣壓,可以增加該黏著層120對該疊壓板130以及對該些凸區112上方黏著面的孔隙空氣之吸附效果。在本實施例中,該些第一氣囊孔121內氣壓約為0.001mBar。 Referring to FIGS. 1 and 2, the adhesive layer 120 is formed on the non-flat surface 111, and the adhesive layer 120 is a photosensitive adhesive. The adhesive layer 120 covers the convex regions 112. The adhesive layer 120 is patterned before pressing and has a plurality of first airbag holes 121. The first airbag holes 121 do not overlap the convex regions 112. Arranged around the lands 112 (as shown in FIG. 2). The first airbag holes 121 have the functions of preventing irregular expansion of the pressing pores and absorbing sudden stresses, and more importantly, are close to the convex regions 112, and the first airbag holes 121 are adjacent to the convex regions 112. The horizontal distance should not be greater than the length or width of the convex regions 112 in the same horizontal direction. When more than two convex regions 112 are arranged, at least one first airbag hole 121 can be disposed on Between the two convex regions 112 (as shown in Fig. 2). In this embodiment, the first airbag holes 121 may be elliptical holes, so that the effect of pore and stress absorption is better. After the pressure bonding, the air pressure in the first airbag holes 121 may be no more than one atmosphere, and the adsorption effect of the adhesive layer 120 on the laminated plate 130 and the pore air on the adhesive surface above the convex regions 112 may be increased. . In this embodiment, the air pressure in the first airbag holes 121 is about 0.001 mBar.
請參閱第1圖,以該平坦面131面向該非平坦面111的壓合方式使得該疊壓板130係黏合於該元件基板110上之該黏著層120,其中該黏著層120對該非平坦面111之一第一黏著面積係大於該黏著層120對該平坦面131之一第二黏著面積。 Referring to FIG. 1 , the flat surface 131 is pressed against the non-flat surface 111 such that the laminated plate 130 is adhered to the adhesive layer 120 on the element substrate 110 , wherein the adhesive layer 120 is opposite to the non-flat surface 111 . A first adhesive area is greater than a second adhesive area of the adhesive layer 120 to the flat surface 131.
請參閱第1及2圖,該黏著層120係可更具有一窗形孔123,以顯露該元件設置區113,該黏著層120係可更具有複數個第二氣囊孔122,該些第二氣囊孔122係可不重疊於該元件設置區113而排列在該窗形孔123之周圍(如第2圖所示)。該些第二氣囊孔122係亦可為橢圓形孔。該些第二氣囊孔122內氣壓係亦可不大於一大氣壓,可以增加該黏著層120對該疊壓板130以及對該元件設置區113周邊黏著面的孔隙空氣之吸附效果。 Referring to FIGS. 1 and 2, the adhesive layer 120 may further have a window-shaped opening 123 for exposing the component setting area 113. The adhesive layer 120 may further include a plurality of second airbag holes 122, and the second The airbag holes 122 may be arranged around the window-shaped holes 123 without overlapping the element setting region 113 (as shown in Fig. 2). The second airbag holes 122 may also be oval holes. The air pressure in the second airbag holes 122 may not be greater than one atmosphere, and the adsorption effect of the adhesive layer 120 on the laminated plate 130 and the pore air on the adhesive surface of the component mounting region 113 may be increased.
因此,本發明提供之一種加蓋壓合式半導體封裝構造及其製造方法係藉以防止兩疊壓板之間的不規則孔隙產生,進而消除在後封裝製程中團塊狀大面積無效黏著區的形成可能。 Therefore, the present invention provides a capping-type semiconductor package structure and a manufacturing method thereof for preventing irregular pores between two stacks of press plates, thereby eliminating the possibility of formation of large-sized ineffective adhesive regions in a post-packaging process. .
關於上述加蓋壓合式半導體封裝構造100之製造方法係說明如後,第3A至3K圖係繪示在該加蓋壓合式半導體封裝構 造100之製造方法中各主要步驟之元件截面示意圖,第4圖係繪示在第3C圖中黏著層120覆蓋區域之元件上視圖。 The manufacturing method of the capping-type semiconductor package structure 100 described above is as follows, and the 3A to 3K drawings are shown in the capped press-fit semiconductor package. A cross-sectional view of the elements of each of the main steps in the manufacturing method of the manufacturing method of FIG. 3, and FIG. 4 is a top view of the elements of the area covered by the adhesive layer 120 in FIG. 3C.
首先,請參閱第3A圖,提供一第一基板10,係包含複數個一體連接之元件基板110,該些元件基板110係具有一非平坦面111,該非平坦面111上係形成有複數個凸區112。該在該些元件基板110之間係形成為複數個切割道11。該第一基板10係可為一半導體晶圓、一晶圓型態半導體封裝片或一面板型態半導體封裝片。在本實施例中,該第一基板10係為CMOS影像感測器之裝置晶圓(device wafer)。更具體地,該非平坦面111上係更形成有複數個第一凹區114與至少一第二凹區115,該些元件基板110之複數個元件設置區113係形成於對應第一凹區114上,該第二凹區115係形成於該些元件基板110之周緣。該第二凹區115係更下凹於該些第一凹區114。該第二凹區115係更延伸到複數個在該元件基板110之間的切割道11。 First, referring to FIG. 3A, a first substrate 10 is provided, which includes a plurality of integrally connected component substrates 110. The component substrates 110 have a non-flat surface 111, and the non-flat surface 111 is formed with a plurality of convexities. Area 112. The plurality of dicing streets 11 are formed between the element substrates 110. The first substrate 10 can be a semiconductor wafer, a wafer type semiconductor package sheet or a panel type semiconductor package sheet. In this embodiment, the first substrate 10 is a device wafer of a CMOS image sensor. More specifically, the non-flat surface 111 is further formed with a plurality of first recessed regions 114 and at least one second recessed region 115. The plurality of component-arranged regions 113 of the component substrate 110 are formed in the corresponding first recessed regions 114. The second recess 115 is formed on the periphery of the element substrates 110. The second recess 115 is further recessed in the first recesses 114. The second recess 115 extends further to a plurality of dicing streets 11 between the element substrates 110.
之後,請參閱第3B圖,利用貼膜(film attaching)、旋塗(spin coating)或印刷(printing)方式形成一黏著層120於該非平坦面111上,該黏著層120係覆蓋該些凸區112。 Thereafter, referring to FIG. 3B, an adhesive layer 120 is formed on the non-flat surface 111 by film attaching, spin coating or printing, and the adhesive layer 120 covers the convex regions 112. .
之後,請參閱第3C及4圖,進行一對該黏著層120之壓合前圖案化作業,例如曝光顯影,使得該黏著層120係具有複數個第一氣囊孔121。當該黏著層120覆蓋於該些凸區112,該些第一氣囊孔121係不重疊於該些凸區112而排列在該些凸區112之周圍。此外,在本步驟中,該黏著層120係更具有對應每一元件 基板110之一窗形孔123,以顯露該元件設置區113;該黏著層120係更具有複數個第二氣囊孔122,該些第二氣囊孔122係不重疊於該元件設置區113而排列在該窗形孔123之周圍(請配合參閱第4圖)。在壓合前圖案化作業之後,該黏著層120係更形成於該些切割道11中。或者如第二較佳實施例之結構中,當該黏著層120覆蓋於該第二凹區115,該些第一氣囊孔121係可對準在該些凸區112上。 Thereafter, referring to FIGS. 3C and 4, a pair of pre-pressing patterning operations of the adhesive layer 120, such as exposure and development, are performed such that the adhesive layer 120 has a plurality of first airbag holes 121. When the adhesive layer 120 covers the convex regions 112, the first airbag holes 121 are not overlapped with the convex regions 112 and are arranged around the convex regions 112. In addition, in this step, the adhesive layer 120 has more corresponding components. a window-shaped hole 123 of the substrate 110 to expose the component setting area 113; the adhesive layer 120 further has a plurality of second airbag holes 122, and the second airbag holes 122 are not arranged to overlap the component setting area 113. Around the window hole 123 (please refer to Figure 4). The adhesive layer 120 is further formed in the scribe lines 11 after the embossing patterning operation. Alternatively, in the structure of the second preferred embodiment, when the adhesive layer 120 covers the second recessed area 115, the first airbag holes 121 may be aligned on the convex areas 112.
之後,請參閱第3D及3E圖,壓合一第二基板20與該第一基板10,該第二基板20係包含複數個一體連接之疊壓板130,該些疊壓板130係具有一平坦面131,以該平坦面131面向該非平坦面111的壓合方式使得該些疊壓板130係黏合於該些元件基板110上之該黏著層120,其中該黏著層120對該非平坦面111之一第一黏著面積係大於該黏著層120對該平坦面131之一第二黏著面積(如3E圖所示)。該第二基板20之尺寸係可對應於該第一基板10之尺寸。在本實施例中,該第二基板20係為一具有裝置晶圓尺寸之玻璃片。在上述壓合該第二基板20與該第一基板10之過程中,較佳地同時對該黏著層120進行抽真空作業,以使該些第一氣囊孔121內氣壓約為0.001mBar,而不大於一大氣壓。 Then, referring to FIGS. 3D and 3E, a second substrate 20 and a first substrate 10 are laminated, and the second substrate 20 includes a plurality of integrally connected laminated plates 130 having a flat surface. The adhesive layer 130 is adhered to the adhesive layer 120 on the component substrate 110, wherein the adhesive layer 120 is one of the non-flat surfaces 111. An adhesive area is greater than a second adhesive area of the adhesive layer 120 to the flat surface 131 (as shown in FIG. 3E). The size of the second substrate 20 may correspond to the size of the first substrate 10. In this embodiment, the second substrate 20 is a glass piece having a device wafer size. In the process of pressing the second substrate 20 and the first substrate 10, preferably, the adhesive layer 120 is vacuumed at the same time, so that the air pressure in the first airbag holes 121 is about 0.001 mBar. Not more than one atmosphere.
之後,請參閱第3F圖,對該第一基板10與第二基板20之壓合體進行一研磨作業,其係研磨該第一基板10之非壓合面116,以降低該些元件基板110之厚度。 Then, referring to FIG. 3F, a bonding operation of the first substrate 10 and the second substrate 20 is performed, and the non-pressing surface 116 of the first substrate 10 is polished to reduce the component substrates 110. thickness.
之後,請參閱第3G圖,對該第一基板10與第二基板 20之壓合體進行一鑽孔作業,使得該些元件基板110係具有複數個縱向導通機構117之貫穿孔,其係可由該些元件基板110之該非壓合面116導通至該些突出電極119。 Thereafter, referring to FIG. 3G, the first substrate 10 and the second substrate are The embossing body of 20 performs a drilling operation such that the component substrates 110 have through holes of a plurality of longitudinal conducting mechanisms 117 which are electrically connected to the protruding electrodes 119 by the non-pressing surfaces 116 of the component substrates 110.
之後,請參閱第3H圖,對該第一基板10與第二基板20之壓合體進行一導電層沉積與電鍍作業,其係形成一導電金屬層118於該第一基板10之非壓合面116,並可形成於該些縱向導通機構117之貫穿孔孔壁,以構成電連接該些突出電極119之該些縱向導通機構117。 Then, referring to FIG. 3H, a conductive layer deposition and plating operation is performed on the bonding body of the first substrate 10 and the second substrate 20, and a conductive metal layer 118 is formed on the non-pressing surface of the first substrate 10. 116, and may be formed in the through hole walls of the longitudinal conducting mechanisms 117 to form the longitudinal conducting mechanisms 117 electrically connecting the protruding electrodes 119.
之後,請參閱第3I圖,對該第一基板10與第二基板20之壓合體進行一絕緣層沉積作業,其係形成一絕緣的背向保護層143於該非壓合面116並覆蓋該導電金屬層118之線路,但不覆蓋該導電金屬層118之連接墊。此外,一導電接合層151係更形成於該導電金屬層118之連接墊上。如第3J圖所示,對該第一基板10與第二基板20之壓合體進行一植球迴焊作業,以使複數個銲球之外接端子150接合於該導電接合層151。 Thereafter, referring to FIG. 3I, an insulating layer deposition operation is performed on the bonding body of the first substrate 10 and the second substrate 20, and an insulating back protective layer 143 is formed on the non-pressing surface 116 and covers the conductive layer. The lines of metal layer 118 do not cover the connection pads of the conductive metal layer 118. In addition, a conductive bonding layer 151 is formed on the connection pads of the conductive metal layer 118. As shown in FIG. 3J, a ball bonding operation is performed on the pressed body of the first substrate 10 and the second substrate 20 so that a plurality of solder ball external terminals 150 are bonded to the conductive bonding layer 151.
最後,請參閱第3J及3K圖,該製造方法另包含一單體化切割步驟,沿著該些切割道11切割該第一基板10、該第二基板20與該黏著層120,以單體化分離該元件基板110與該疊壓板130之黏合體,藉以製作出複數個分離如第1圖所示之加蓋壓合式半導體封裝構造100。 Finally, referring to FIGS. 3J and 3K, the manufacturing method further includes a singulation cutting step along which the first substrate 10, the second substrate 20 and the adhesive layer 120 are cut to form a single body. The bonded body of the element substrate 110 and the laminated plate 130 is separated to form a plurality of capped laminated semiconductor package structures 100 separated as shown in FIG.
在上述壓合步驟之後與上述單體化切割步驟之前的後封裝製程中,該黏著層120對該第一基板10之非平坦面111 的黏著界面以及對該第二基板20之平坦面131的黏著界面不會產生不規則孔隙,進而消除在後封裝製程中團塊狀大面積無效黏著區的形成可能。 The adhesive layer 120 is non-flat surface 111 of the first substrate 10 after the pressing step and the post-packaging process before the singulation cutting step. The adhesive interface and the adhesive interface of the flat surface 131 of the second substrate 20 do not generate irregular voids, thereby eliminating the possibility of formation of a large area of ineffective adhesive regions in the post-packaging process.
依據本發明之第二較佳實施例,另一種加蓋壓合式半導體封裝構造200舉例說明於第5圖之截面示意圖以及第6圖之黏著層在非平坦面上之俯視示意圖,其中對應於第一較佳實施例相同名稱與功能之元件以第一較佳實施例的元件圖號表示,相同細部特徵不再贅述。該加蓋壓合式半導體封裝構造200係包含一元件基板110、一黏著層120以及一疊壓板130。該元件基板110係可選自於影像感測晶片、光電晶片、微機電晶片、晶片尺寸封裝體、扇出型晶圓等級封裝體、積體電路基板與線路基板之其中之一,該疊壓板130係可選自於玻璃片、金屬片、晶片與預模晶片體之其中之一。 According to a second preferred embodiment of the present invention, another capping-fit semiconductor package structure 200 is illustrated in a cross-sectional view of FIG. 5 and a top view of the adhesive layer on the non-flat surface of FIG. 6, wherein The components of the same name and function are denoted by the component numbers of the first preferred embodiment, and the same detailed features are not described again. The capped press-fit semiconductor package structure 200 includes an element substrate 110, an adhesive layer 120, and a stack of press plates 130. The component substrate 110 can be selected from one of an image sensing wafer, an optoelectronic wafer, a microelectromechanical wafer, a wafer size package, a fan-out wafer level package, an integrated circuit substrate, and a circuit substrate. The 130 series may be selected from one of a glass sheet, a metal sheet, a wafer, and a pre-formed wafer body.
請參閱第5圖,該元件基板110係具有一非平坦面111,該非平坦面111上係形成有複數個凸區112與至少一凹區215,該些凸區112係突出於一面向保護層142,該凹區215係凹陷於該面向保護層142。該非平坦面111的高低不同區域係由該元件基板110之一內絕緣層141上配置各式圖案與元件所組成。在本實施例中,該些凸區112係可由該些突出電極119所形成,該凹區215係可形成於該非平坦面111之周緣。該元件基板110具體係可為扇出型晶圓等級封裝體,該元件基板110係可包含有一包覆晶片側面之封膠體260以及至少一局部或完整形成於該封膠體260之重 配置線路層,例如在該非壓合面116之一導電金屬層118。該元件基板110之非平坦面111係更更包含一元件設置區113。該元件設置區113係可包含複數個影像感測元件,該疊壓板130係可為一透光片。 Referring to FIG. 5 , the element substrate 110 has a non-flat surface 111 formed with a plurality of convex regions 112 and at least one concave region 215 protruding from a protective layer. 142, the recessed area 215 is recessed in the protective layer 142. The different regions of the uneven surface 111 are composed of various patterns and elements disposed on the insulating layer 141 of one of the element substrates 110. In this embodiment, the convex regions 112 may be formed by the protruding electrodes 119, and the concave regions 215 may be formed on the periphery of the uneven surface 111. The component substrate 110 may be a fan-out wafer level package, and the component substrate 110 may include a sealant 260 covering a wafer side and at least a portion or a complete form of the sealant 260. A wiring layer, such as one of the conductive metal layers 118 on the non-compression surface 116, is disposed. The non-flat surface 111 of the element substrate 110 further includes a component setting region 113. The component setting area 113 can include a plurality of image sensing elements, and the laminated plate 130 can be a light transmissive sheet.
請參閱第5及6圖,該黏著層120係形成於該非平坦面111上,該黏著層120係覆蓋該凹區215,該黏著層120係為壓合前圖案化而具有複數個第一氣囊孔221,該些第一氣囊孔221係對準於該些凸區112。該些第一氣囊孔221內氣壓係可不大於一大氣壓,可以增加該黏著層120對該疊壓板130以及對該些凸區112外周黏著面的孔隙空氣之吸附效果。此外,該黏著層120係可更具有一窗形孔123,以顯露該元件設置區113,該黏著層120係可更具有複數個第二氣囊孔122,該些第二氣囊孔122係可不重疊於該元件設置區113而排列在該窗形孔123之周圍,但不與該窗形孔123連通。該些第二氣囊孔122係可為橢圓形孔。該些第二氣囊孔122內氣壓係亦可不大於一大氣壓。 Referring to FIGS. 5 and 6, the adhesive layer 120 is formed on the non-flat surface 111. The adhesive layer 120 covers the concave portion 215. The adhesive layer 120 is patterned before pressing and has a plurality of first airbags. The holes 221, the first airbag holes 221 are aligned with the convex regions 112. The air pressure in the first airbag holes 221 may be no more than one atmosphere, and the adsorption effect of the adhesive layer 120 on the laminated plate 130 and the pore air on the outer peripheral adhesive faces of the convex regions 112 may be increased. In addition, the adhesive layer 120 may further have a window-shaped hole 123 to expose the component setting area 113. The adhesive layer 120 may further have a plurality of second airbag holes 122, and the second airbag holes 122 may not overlap. The element-shaped area 113 is arranged around the window-shaped hole 123, but does not communicate with the window-shaped hole 123. The second airbag holes 122 may be elliptical holes. The air pressure in the second airbag holes 122 may also be no more than one atmosphere.
請參閱第5圖,該疊壓板130係具有一平坦面131,以該平坦面131面向該非平坦面111的壓合方式使得該疊壓板130係黏合於該元件基板110上之該黏著層120,其中該黏著層120對該非平坦面111之一第一黏著面積係大於該黏著層120對該平坦面131之一第二黏著面積。由於該些第一氣囊孔221之形成位置,該元件基板110之該些凸區112較佳為不接觸該疊壓板130,且不以該黏著層120之膠體縱向黏接。 Referring to FIG. 5 , the laminated plate 130 has a flat surface 131 , and the flat surface 131 is pressed against the non-flat surface 111 such that the laminated plate 130 is adhered to the adhesive layer 120 on the component substrate 110 . The first adhesive area of the adhesive layer 120 to the non-flat surface 111 is greater than the second adhesive area of the adhesive layer 120 to the flat surface 131. Due to the formation positions of the first airbag holes 221, the convex regions 112 of the component substrate 110 preferably do not contact the laminated plate 130, and are not longitudinally bonded by the colloid of the adhesive layer 120.
請參閱第5圖,該元件基板110係可更具有複數個縱向導通機構117,其係可由該元件基板110之一非壓合面116電性導通至該些突出電極119,並與該導電金屬層118電性連接。在本實施例中,該些縱向導通機構117係可為貫穿型模封導通孔(TMV)、模封金屬柱、模封銲球或側面立體線路。一背向保護層143係形成於該非壓合面116並覆蓋該導電金屬層118之線路。複數個外接端子150係經由其底部之導電接合層151電性連接至該導電金屬層118。 Referring to FIG. 5 , the component substrate 110 can further have a plurality of longitudinal conduction mechanisms 117 , which can be electrically connected to the protruding electrodes 119 by one of the non-compression surfaces 116 of the component substrate 110 , and the conductive metal Layer 118 is electrically connected. In this embodiment, the longitudinal conduction mechanisms 117 can be through-type molded vias (TMV), molded metal posts, molded solder balls, or side stereoscopic lines. A back protective layer 143 is formed on the non-compression surface 116 and covers the conductive metal layer 118. A plurality of external terminals 150 are electrically connected to the conductive metal layer 118 via a conductive bonding layer 151 at the bottom thereof.
該加蓋壓合式半導體封裝構造200之製造方法係可沿用相同於第一較佳實施例的加蓋壓合式半導體封裝構造100之製造方法中如第3A至3K圖所示的主要製程步驟。 The method of fabricating the capped-type semiconductor package structure 200 can follow the main process steps as shown in Figures 3A through 3K in the fabrication method of the capped-press-type semiconductor package structure 100 of the first preferred embodiment.
以上所揭露的僅為本發明較佳實施例而已,當然不能以此來限定本發明之權利範圍,因此依本發明權利要求所作的等同變化,仍屬本發明所涵蓋的範圍。 The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made in the claims of the present invention are still within the scope of the present invention.
100‧‧‧加蓋壓合式半導體封裝構造 100‧‧‧Capped press-fit semiconductor package construction
110‧‧‧元件基板 110‧‧‧ element substrate
111‧‧‧非平坦面 111‧‧‧ non-flat surface
112‧‧‧凸區 112‧‧‧ convex area
113‧‧‧元件設置區 113‧‧‧Component setting area
114‧‧‧第一凹區 114‧‧‧First pit
115‧‧‧第二凹區 115‧‧‧second recess
116‧‧‧非壓合面 116‧‧‧Non-pressed surface
117‧‧‧縱向導通機構 117‧‧‧Longitudinal conduction mechanism
118‧‧‧導電金屬層 118‧‧‧ Conductive metal layer
119‧‧‧突出電極 119‧‧‧ protruding electrode
120‧‧‧黏著層 120‧‧‧Adhesive layer
121‧‧‧第一氣囊孔 121‧‧‧First airbag hole
122‧‧‧第二氣囊孔 122‧‧‧Second airbag hole
123‧‧‧窗形孔 123‧‧‧Window hole
130‧‧‧疊壓板 130‧‧‧Laminated plate
131‧‧‧平坦面 131‧‧‧flat surface
141‧‧‧內絕緣層 141‧‧‧Insulation
142‧‧‧面向保護層 142‧‧‧ facing the protective layer
143‧‧‧背向保護層 143‧‧‧Back protective layer
150‧‧‧外接端子 150‧‧‧External terminals
151‧‧‧導電接合層 151‧‧‧Electrical bonding layer
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TW200805588A (en) * | 2006-07-07 | 2008-01-16 | Chipmos Technologies Inc | Chip scale image sensor package and module utilizing the same |
CN101335278A (en) * | 2007-06-28 | 2008-12-31 | 矽品精密工业股份有限公司 | Sensing type encapsulation piece and manufacturing method thereof |
CN101989607A (en) * | 2009-07-29 | 2011-03-23 | 胜开科技股份有限公司 | Image sensor package structure |
TWM430702U (en) * | 2012-01-20 | 2012-06-01 | Aptos Technology Inc | Chip package with exhaust hole |
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TW200805588A (en) * | 2006-07-07 | 2008-01-16 | Chipmos Technologies Inc | Chip scale image sensor package and module utilizing the same |
CN101335278A (en) * | 2007-06-28 | 2008-12-31 | 矽品精密工业股份有限公司 | Sensing type encapsulation piece and manufacturing method thereof |
CN101989607A (en) * | 2009-07-29 | 2011-03-23 | 胜开科技股份有限公司 | Image sensor package structure |
TWM430702U (en) * | 2012-01-20 | 2012-06-01 | Aptos Technology Inc | Chip package with exhaust hole |
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