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    • 43. 发明公开
    • 부정형 고 전자 이동도 트랜지스터 제조방법
    • 制造高分子电子移动晶体管的方法
    • KR1020080052136A
    • 2008-06-11
    • KR1020070021795
    • 2007-03-06
    • 한국전자통신연구원
    • 임종원안호균지홍구장우진문재경김용원김해천유현규
    • H01L29/778
    • H01L29/66462H01L21/28587H01L23/3171H01L29/42376
    • A method for fabricating a pseudomorphic high electron mobility transistor is provided to reduce capacitance between a gate and a source and between a gate and a drain by leaving a passivation layer only in a partial region under the head of a gate electrode. Source and drain electrodes(12a,12b) are formed on a substrate(11) having an epitaxial growth layer. A passivation layer is formed on the resultant structure. After a first photoresist layer is formed on the passivation layer, the first photoresist layer and the passivation layer are patterned to expose the upper portion of the substrate by using a mask pattern. After the first photoresist layer on the passivation layer is removed, a second photoresist layer having a fine pattern narrower than the pattern of the passivation layer is formed on the resultant structure. After the remaining passivation layer is etched, the second photoresist layer is removed. After a third photoresist layer of a multilayered structure is formed on the resultant structure, the third photoresist layer is patterned to form a gate electrode(20) of a T shape. The upper portion of the substrate is etched by using the passivation layer etched by the fine pattern to form a recess in the upper surface of the substrate. After metal for a gate electrode is deposited on the resultant structure, the third photoresist layer and the metal for the gate electrode are removed to form a gate electrode of a T shape connected to the substrate by the recess.
    • 提供了一种用于制造伪像高电子迁移率晶体管的方法,以通过仅在栅电极的头部下方的局部区域中留下钝化层来减小栅极和源极之间以及栅极和漏极之间的电容。 源极和漏极电极(12a,12b)形成在具有外延生长层的衬底(11)上。 在所得结构上形成钝化层。 在钝化层上形成第一光致抗蚀剂层之后,通过使用掩模图案,将第一光致抗蚀剂层和钝化层图案化以暴露衬底的上部。 在除去钝化层上的第一光致抗蚀剂层之后,在所得结构上形成具有比钝化层图案窄的精细图案的第二光致抗蚀剂层。 在蚀刻剩余的钝化层之后,去除第二光致抗蚀剂层。 在所得结构上形成第三光致抗蚀剂层的多层结构之后,对第三光致抗蚀剂层进行构图以形成T形栅电极(20)。 通过使用由精细图案蚀刻的钝化层来蚀刻衬底的上部,以在衬底的上表面中形成凹陷。 在所得结构上沉积用于栅电极的金属之后,去除第三光致抗蚀剂层和用于栅电极的金属,以形成通过凹部连接到基板的T形栅电极。
    • 45. 发明授权
    • 반도체 장치
    • 半导体器件
    • KR100731800B1
    • 2007-06-25
    • KR1020060033406
    • 2006-04-13
    • 미쓰비시덴키 가부시키가이샤
    • 아마스가히로타카시가토시히코쿠니이테쓰오오쿠토모키
    • H01L21/20H01L29/47
    • H01L29/475H01L21/28581H01L21/28587H01L29/42316
    • 쇼트키 전극의 내습성을 향상할 수 있는 반도체 장치를 얻는다. 쇼트키 전극인 게이트 전극(8)은, TaNx층(6)과 Au층(7)을 가지고 있다. TaNx층(6)은, Au층(7)과 기판(100) 사이에서 원자가 확산하는 것을 방지하기 위한, 배리어 메탈로서 기능한다. TaNx은 Si을 포함하지 않기 때문에, Si를 포함하는 WSiN보다도 내습성이 높다. 그 때문에 게이트 전극(8)은, WSiN층을 가지는 종래의 게이트 전극에 비해 내습성이 높다. 또한 질소 함유율 x을 0.8미만으로 설정함으로써, 종래의 게이트 전극에 비해 쇼트키 특성이 대폭 저하하는 것을 피할 수 있다. 또는, 질소 함유율 x이 0.5이하의 범위내에서는, 종래의 게이트 전극보다도 쇼트키 특성을 향상시킬 수 있다.
      게이트 전극, 쇼트키 특성, 질소 함유율, 배리어 메탈
    • 获得能够改善肖特基电极的耐湿性的半导体器件。 作为肖特基电极的栅电极8具有TaNx层6和Au层7。 TaN x层6用作阻挡金属以防止原子在Au层7和衬底100之间扩散。 由于TaNx不含Si,因此比含Si的WSiN具有更高的耐湿性。 因此,与具有WSiN层的传统栅电极相比,栅电极8具有更高的防潮性。 此外,通过将氮含量x设定为小于0.8,与常规栅极电极相比,可以避免肖特基特性显着降低。 或者,在氮含量x为0.5或更小的范围内,肖特基特性可以比常规栅电极改善得更多。
    • 47. 发明公开
    • 미세 T형 전극의 제조 방법
    • 微型T形电极制造方法
    • KR1020050046007A
    • 2005-05-17
    • KR1020057002493
    • 2003-08-04
    • 후지쯔 가부시끼가이샤
    • 사와다켄
    • H01L21/336
    • H01L29/42316H01L21/28H01L21/28587
    • A method for fabricating a micro T-shaped electrode at low cost with high throughput. The method comprises a multilayer resist forming step of forming a multilayer resist including an ultraviolet-sensitive resist layer sensitive to ultraviolet radiation as an uppermost layer on a T-shaped gate electrode forming surface, an uppermost layer opening forming step of forming an uppermost layer opening by applying ultraviolet radiation to the multilayer resist and patterning only the ultraviolet-sensitive resist layer, an uppermost layer opening reducing step of reducing the diameter of the uppermost layer opening formed in the ultraviolet-sensitive resist layer by applying a resist pattern thickening material to the ultraviolet- sensitive resist layer, a lowermost layer opening forming step of forming a lowermost layer opening extending through the multilayer resist in the lowermost layer of the multilayer resist by transferring the uppermost layer opening formed in the ultraviolet-sensitive resist layer to a lower layer, a lowermost layer opening reducing step of reducing the size of the lowermost layer opening in the lowermost layer of the multilayer resist, and a T-shaped electrode forming step of forming a T-shaped electrode in the opening extending through the multilayer resist.
    • 一种低成本,高生产能力的微型T型电极的制造方法。 该方法包括:形成多层抗蚀剂的步骤,该方法包括在T形栅电极形成表面上作为最上层的紫外线辐射敏感的紫外线敏感抗蚀剂层,最上层开口形成步骤,形成最上层开口 通过对多层抗蚀剂施加紫外线照射并仅图案化紫外线敏感性抗蚀剂层,最上层开口缩小步骤,通过将抗蚀剂图案增厚材料施加到所述紫外线敏感抗蚀剂层上而减小形成在紫外线敏感抗蚀剂层中的最上层开口的直径 紫外线敏感性抗蚀剂层,最下层开口形成步骤,通过将形成在紫外线敏感剂层中的最上层开口转移到下层,形成延伸穿过多层抗蚀剂的最下层中的多层抗蚀剂的最下层开口; 减少t的最下层开口减少步骤 在多层抗蚀剂的最下层中的最下层开口的尺寸和在延伸穿过多层抗蚀剂的开口中形成T形电极的T形电极形成步骤。
    • 49. 发明公开
    • 화합물 반도체 소자 및 그 제조 방법
    • 半导体器件及其制造方法
    • KR1020010078191A
    • 2001-08-20
    • KR1020010004510
    • 2001-01-31
    • 소니 주식회사
    • 이치로하세
    • H01L29/772
    • H01L29/66462H01L21/28587H01L29/1029H01L29/7785
    • PURPOSE: To provide a semiconductor device which excludes a difficulty in forming a diffusion layer with high accuracy, in which a Vth control operation is performed easily, in which the influence of a depletion layer on the surface of a semiconductor is reduced, in which the carrier density of a channel layer is ensured, and which restrains an increase in the resistance between a source electrode and a gate electrode. CONSTITUTION: The semiconductor device is provided with a channel layer 14 which is composed of a semiconductor so as to be used as a current passage between the source electrode and a drain electrode. The semiconductor device is provided with a first barrier layer 15 which is formed on the channel layer 14 so as to be composed of a semiconductor whose electron affinity is smaller than that of the channel layer 14. The semiconductor device is provided with a first gate contact layer 24 which comprises a first-conductivity-type low-resistance region composed of a semiconductor containing a first-conductivity-type impurity at a high concentration, in which the sum of its electron affinity and the band gap is by 1.3 eV or more larger than the electron affinity of the channel layer 14 and which is formed on the first barrier layer 15. The semiconductor device is provided with the source electrode 18 and the drain electrode 19 which are formed on the first barrier layer 15 by sandwiching the gate electrode 20.
    • 目的:提供一种半导体器件,其排除了难以形成难以形成扩散层的难题,其中容易执行Vth控制操作,其中耗尽层对半导体表面的影响减小,其中 确保沟道层的载流子密度,并且抑制源电极和栅电极之间的电阻的增加。 构成:半导体装置设置有沟道层14,沟道层14由半导体构成,以便用作源电极和漏电极之间的电流通路。 半导体器件设置有形成在沟道层14上的第一势垒层15,以由电子亲和力小于沟道层14的半导体构成。半导体器件设置有第一栅极接触 层24包括由包含高浓度的第一导电型杂质的半导体构成的第一导电型低电阻区域,其中电子亲和力和带隙之和为1.3eV以上 比沟道层14的电子亲和力高,形成在第一阻挡层15上。半导体器件设置有通过夹着栅电极20形成在第一阻挡层15上的源电极18和漏电极19 。