baber/WOPTO huggingface dataset:
Patent WO-2019062020-A1 (WO)
Title: Asynchronous task unified processing method and apparatus, and storage medium
Inventor: SUN QIANG
IPC: G06F9/48
Filed: 2018-02-28
Abstract: Disclosed are an asynchronous task unified processing method and apparatus, and a storage medium. The method comprises: generating scripts of asynchronous tasks according to basic information of the asynchronous tasks, and adding the scripts into a database; adding configuration information and asynchronous task classes of the asynchronous tasks into a development code, adding service types involved in the asynchronous tasks into the asynchronous task classes, setting processing types involved in the service types, and setting corresponding service logic for the processing types; receiving the asynchronous tasks from a client, and storing the received asynchronous tasks in a task list according to a time sequence; reading, from the task list, an asynchronous task received earliest; and determining the service type and the processing type of the asynchronous task by means of a first determining step and a second determining step. The development time is shortened and the working efficiency is improved.
Patent WO-2018201786-A1 (WO)
Inventor: LI HUILING
IPC: H04B7/06
Filed: 2018-03-02
Abstract: 本发明的实施例提供了一种多波束的CSI反馈信息的传输方法和装置。根据本发明实施例的方法包括：发送用于指示CSI反馈信息的类型的信息；使用第一类型的CSI反馈方式发送多波束的CSI反馈信息中的第一类型的CSI反馈信息，其中，第一类型的CSI反馈信息至少包括第一传输阶数信息、第一信道质量信息和多波束中的第一波束的反馈信息；使用第二类型的CSI反馈方式发送多波束的CSI反馈信息中的第二类型的CSI反馈信息，其中，第二类型的CSI反馈信息至少包括第二传输阶数信息、第二信道质量信息、多波束中除了第一波束以外的其他波束的反馈信息。
Patent WO-2018177139-A1 (WO)
Title: 一种视频摘要生成方法、装置、服务器及存储介质
Inventor: ZENG PEILING
IPC: H04N21/8549
Filed: 2018-03-16
Abstract: 本发明实施例公开了一种视频摘要生成方法、装置、服务器及存储介质，用于针对不同的用户自动生成不同的视频摘要，提升视频的浏览量，为更多用户提供有效的信息，并提高了视频摘要生成的效率。本发明实施例方法包括：将目标视频分割成若干个视频帧；根据用户特征，从所述若干个视频帧中确定用户对应的N个目标帧，所述N为大于1的整数；提取所述N个目标帧中的字幕；根据所述字幕生成目标视频摘要。
Patent WO-2019178837-A1 (WO)
Inventor: CHEN JUN
IPC: G06Q30/06
Filed: 2018-03-23
Abstract: The present invention is suitable for the field of clothing customization, and provides a clothing customization design method and platform. The method comprises: receiving body data information of a user, and generating a three-dimensional human body model of the user according to the received body data information of the user; receiving a clothing style selected by the user, and designing and generating a customized clothing style according to the modification of the user for parts, and/or fabrics and accessories, of the clothing style; matching a corresponding size according to the body data information of the user, and performing three-dimensional simulation display on the clothing style selected by the user in combination with the body data information of the user; and receiving a clothing style finally determined by the user, and generating a clothing order. According to the present invention, by acquiring body data of a user, and selecting and designing parts, fabrics and accessories under optional clothing styles, clothing that meets the body size and user preference requirements of the user is finally generated, and then the clothing is produced and delivered, thereby making it convenient for the user to purchase clothing; moreover, the body condition of the user can be matched in the clothing industry.
Patent WO-2018192523-A1 (WO)
Inventor: SHANG JIANXING
IPC: G06F3/041
Filed: 2018-04-18
Abstract: L'invention concerne un substrat d'affichage et un dispositif d'affichage. Le substrat d'affichage comprend : des lignes de signal de données (011) situées dans une zone d'affichage (001) du substrat d'affichage; et des routages de sortance (021) située dans une zone de sortance (002) d'une zone d'affichage adjacente (001) du substrat d'affichage et connectée aux lignes de signal de données (011) dans une correspondance biunivoque, les routages de sortance de signal de données (021) comprenant un premier routage de sortance (213) agencé dans la même couche qu'une électrode tactile (T) du substrat d'affichage.
Patent WO-2018192548-A1 (WO)
Title: 一种洗衣机
Inventor: LV PEISHI
IPC: D06F23/04
Filed: 2018-04-19
Abstract: 一种洗衣机，包括，箱体（1）、洗涤桶（2），设置在洗涤桶（2）下部的安装板（4），所述安装板（4）通过减振部件与箱体（1）连接，洗涤桶（2）作为盛水桶，可相对安装板转动，在安装板（4）的外边缘与箱体（1）之间设有一下沉式的集水结构（18），所述集水结构（18）的一侧与箱体（1）内壁密封连接，以收集沿箱体（1）内壁流下的洗涤水，在集水结构（18）的底部设有副排水口（17），所述副排水口（17）与洗衣机的外部连通。上述洗衣机省去了外桶结构，达到了洗衣机扩容的目的，且避免了洗涤水外溅造成的洗衣机短路问题，有效延长了洗衣机的使用寿命。
Patent WO-2018223881-A1 (WO)
Title: Systèmes et procédés de traitement de données
Inventor: YANG WENJUN
IPC: G06F17/30
Filed: 2018-05-31
Abstract: La présente invention concerne un procédé permettant d'interroger des données. Le procédé peut consister à déterminer une valeur caractéristique d'une dimension de caractéristique sélectionnée parmi des valeurs de caractéristique de la dimension de caractéristique sélectionnée de la pluralité d'entités et à établir une relation correspondante entre la valeur caractéristique et la dimension de caractéristique sélectionnée. Le procédé peut également consister à mettre en mémoire cache la valeur caractéristique correspondante dans une mémoire cache pour chaque entité possédant une valeur caractéristique de la dimension caractéristique sélectionnée différente de la valeur caractéristique, et à laisser la valeur caractéristique correspondante sans mise en cache pour chaque entité possédant une valeur caractéristique de la dimension caractéristique sélectionnée égale à la valeur caractéristique. Le procédé peut en outre consister à effectuer une première recherche dans la mémoire cache afin de produire un premier résultat de recherche en réponse à une demande d'interrogation associée à la pluralité d'entités, et à générer un résultat d'interrogation sur la base de la relation correspondante et du premier résultat de recherche.
Patent WO-2019071970-A1 (WO)
Title: Damping adhesive layers for microspeaker diaphragms
Inventor: YANG CHAO
IPC: B32B25/04
Filed: 2018-06-06
Abstract: Thin films are provided comprising a damping adhesive comprising a polysiloxane or mixture of polysiloxanes and exhibiting a tan delta of at least 0.42 for every temperature between 20°C and 250°C and a tan delta at 250°C that is no more than 0.20 greater than the minimum tan delta measured in the range of 20°C to 250°C; in some cases exhibiting a tan delta of at least 0.42 for every temperature between 20°C and 200°C and a tan delta at 200°C that is no more than 0.08 greater than the minimum tan delta measured in the range of 20°C to 200°C; in some cases obtained by crosslinking polysiloxane(s) by e-beam or peroxide. Microspeaker diaphragm materials, subassemblies and transfer tapes comprising such films are also provided.
Patent WO-2019241933-A1 (WO)
Title: 一种电子烤烟的系统及使用方法
Inventor: XUEWU ZHOU
IPC: A24F47/00
Filed: 2018-06-20
Abstract: 本发明适用于电子烤烟领域，提供了一种电子烤烟的系统，所述系统包括MCU模块，连接MCU模块的马达驱动模块、LED显示模块、开关机模块、充电模块、电压检测模块及发热模块，连接所述马达驱动模块的马达，连接所述发热模块的发热丝，及电性连接所述MCU模块、所述马达驱动模块、所述LED显示模块、所述开关机模块、所述充电模块、所述电压检测模块、所述发热模块及所述马达的电源模块，连接所述电源模块的电源滤波模块；解决市场上流行的电子烤烟在口感上温度过高存在很大的有害物质的吸入，导致喉咙不舒适，温度过低则烟雾口感不逼真的技术问题。
Patent WO-2020014929-A1 (WO)
Title: Map constructing method, movable platform, and computer-readable storage medium
Inventor: WU BO
IPC: G09B29/00
Filed: 2018-07-19
Abstract: A map constructing method, a movable platform, and a computer-readable storage medium, comprising: determining a specified area of a local map on the basis of planning information of the movable platform, where the specified area of the local area does not overlap the location of the movable platform in the local map (201); and constructing the local map on the basis of at least a part of map information acquired by the movable platform and of the specified area of the local map (202). The present method solves the problem of low map utilization rate, thus increasing map utilization rate, enhancing user experience, and allowing the expansion of the effective coverage of a local map.
Patent WO-2019024754-A1 (WO)
Title: Page loading method, device, and system
Inventor: DU JINGWEI
IPC: H04L29/08
Filed: 2018-07-26
Abstract: Disclosed by the present invention are a page loading method, device and system. The page loading system comprises: a terminal, which is used for querying a pre-stored page loading information table according to a pre-acquired first service request, determining whether page loading information corresponding to the first service request exists, and when the determination result is yes, opening a corresponding page according to the page loading information; a server, which is used for receiving a second service request that is sent by the terminal when no page loading information corresponding to the first service request exists in the pre-stored page loading information table, and returning corresponding page loading information according to the second service request such that the terminal opens the corresponding page according to the page loading information; page loading information to be queried in the first service request is the same as page loading information to be queried in the second service request. The present invention solves the technical problem in the existing technology wherein an application has low response efficiency due to page type limitations that are caused by restrictions to the configuration of the application.
Patent WO-2020024189-A1 (WO)
Title: Stylus
Inventor: SHI YIJUN
IPC: G06F3/0354
Filed: 2018-08-01
Abstract: Provided is a stylus (100), comprising a cylinder (10) and a refill loading mechanism (30) provided in the cylinder (10). The refill loading mechanism (30) comprises a stylus head connecting sleeve (31), a stylus tube (33) for loading a lead refill (20), and a refill ejection control device (35) arranged between the stylus head connecting sleeve (31) and the stylus tube (33). The refill ejection control device (35) controls the lead refill (20) so same extends from the stylus head connecting sleeve (31). The stylus tube (33) and the refill ejection control device (35) are both made of an electrically conductive material, and the lead refill (20) is electrically connected to the stylus tube (33) via the refill ejection control device (35). The stylus (100) is easy to use and improves the user experience of writing and drawing with the lead refill (20).
Patent WO-2019029670-A1 (WO)
Title: Method for virtual germane fitting, mobile terminal for virtual garment fitting, and storage device
Inventor: QIAN WEN
IPC: G06Q30/06
Filed: 2018-08-10
Abstract: The present invention relates to the technical field of mobile terminals. Disclosed are a method for virtual garment fitting, a mobile terminal for virtual garment fitting, and a storage device. The method comprises: acquiring body information, and establishing a body model according to the body information; acquiring garment information, and establishing a garment model according to the garment information; combining the body model and the garment model to obtain a garment fit model; analyzing the garment fit model to obtain match score information; and displaying the garment fit model and the match score information. The present invention enables a user to view the fit of a garment on the user without having to try the garment in a physical store, thereby improving user experience.
Patent WO-2019085579-A1 (WO)
Inventor: HE SANYUAN
IPC: H04L29/08
Filed: 2018-08-10
Abstract: L'invention concerne un procédé et un appareil permettant de pousser des informations. Le procédé comprend les étapes suivantes : premièrement, déterminer des informations à pousser qu'un client électronique doit pousser; puis envoyer les informations à pousser vers un côté serveur correspondant à un identifiant du client électronique, et exécuter une opération de poussée par le côté serveur, de façon à pousser les informations à pousser vers un utilisateur spécifique présentant une relation associée à un dispositif d'entrée d'informations correspondant aux informations à pousser.
Patent WO-2019062405-A1 (WO)
Title: Application program processing method and apparatus, storage medium, and electronic device
Inventor: ZENG YUANQING
IPC: G06F1/32
Filed: 2018-08-23
Abstract: An application program processing method and apparatus, a storage medium, and an electronic device. The processing method comprises: acquiring usage information about a sample application program at each sampling time point in a historical time period (101); generating a training sample according to the sampling time point and the usage information (102); training a pre-set Gaussian mixture model according to the training sample (103); processing a background application program in an electronic device on the basis of the trained Gaussian mixture model and a preset Bayesian model (104).
Patent WO-2020042195-A1 (WO)
Inventor: HAN JUN
IPC: A61P11/06
Filed: 2018-09-02
Abstract: A functional fabric. During the preparation of the fabric, a traditional Chinese medicine impregnation liquid for preventing Childhood asthma is used. The traditional Chinese medicine impregnation liquid consists of Coastal Glehnia root, a black tin pill, a gecko tail, Desertliving Cistanche, tendrilleaf fritillary bulb powder, Ephedra, Sweet wormwood herb, and Platycodon root. The fabric is easy to make, and has an excellent effect of preventing Childhood asthma.
Patent WO-2020056634-A1 (WO)
Inventor: HU LIHONG
IPC: C07D403/06
Filed: 2018-09-19
Abstract: A pyrrole-substituted indolone derivative or a pharmaceutically acceptable salt thereof, and a preparation method therefor and an application thereof. The pyrrole-substituted indolone derivative or the pharmaceutically acceptable salt thereof is simple to synthesize, easy to prepare, and rich in raw materials for synthesis, has inhibitory effects on a plurality of tyrosine kinases, especially has higher selective inhibitory activity against KDR (VEGFR2), and FLT3 and its mutants, and can avoid toxic and side effects caused by inhibiting KDR.
Patent WO-2019128362-A1 (WO)
Title: 人脸识别方法、装置、系统及介质
Inventor: FENG YUNA
IPC: G06K9/00
Filed: 2018-09-30
Abstract: 本公开提供了一种人脸识别方法。所述方法包括获取人脸图像，以及根据采集所述人脸图像时所处的光源环境进行人脸识别。根据采集所述人脸图像时所处的光源环境进行人脸识别具体包括：在采集所述人脸图像时所处的光源环境是可见光的情况下，将所述人脸图像与在可见光条件下注册的人脸图进行比对识别；或者，在采集所述人脸图像时所处的光源环境是近红外光的情况下，将所述人脸图像与近红外光条件下注册的人脸图进行比对识别。本公开还提供了一种人脸识别装置、系统及介质。
Patent WO-2019095981-A1 (WO)
Title: 一种电机密封结构和电机
Inventor: GAO FENG
IPC: H02K7/14
Filed: 2018-10-29
Abstract: 一种电机密封结构和电机，所述电机密封结构包括：转轴(1)；轴承(2)，套设在所述转轴(1)上，且在所述转轴(1)的外周壁上、与所述轴承(2)相对应的位置沿所述转轴轴向还设置有轴肩结构，使得所述轴承(2)的部分与所述轴肩结构之间形成容腔(4)；风叶结构(3)，套设在所述转轴(1)的一端，并沿转轴(1)轴线方向延伸至所述轴承(2)的位置，且卡设进入容腔(4)中。该方案能够通过电机冷却用风叶进行密封，使得风叶结构与轴承内圈接触，与轴承内圈同步旋转，不用增加密封件、防止了转轴与密封件直接接触，不会产生能量损耗，解决了目前常用密封方式能量损失的问题，保证电机性能，提高效率，而且结构简单，装配方便，按正常压装即可；不再增加其它零件，节省成本。
Patent WO-2020093319-A1 (WO)
Inventor: ZHONG YI
IPC: A61N1/04
Filed: 2018-11-08
Abstract: An electrode (10) includes a distal backing layer (12) and an electrically conductive connector (18). The distal backing layer (12) defines a depressible trigger pocket (14), which defines a distal opening (16). The trigger pocket (14) is configured to deform from an initial configuration to a depressed configuration in response to a proximal force applied to the distal backing layer (12). In some examples, the electrically conductive connector (18) defines a proximal connector surface (20) and a distal eyelet (22) that extends distally through the distal opening (16) in the distal backing layer (12). The conductive connector (18) is configured to move proximally in response to the proximal force to complete a conductive path with skin of a patient. An example technique includes aligning the electrode (10) with the skin of the patient, and applying a proximal force to the distal backing layer (12).
Patent WO-2020097768-A1 (WO)
Inventor: WANG LIZHONG
IPC: H04W52/02
Filed: 2018-11-12
Abstract: L'invention concerne un procédé de traitement à économie d'énergie comprenant : l'acquisition d'une première valeur d'attribut d'état en cours d'un dispositif mobile ; la comparaison de la première valeur d'attribut d'état avec une seconde valeur d'attribut d'état dans un ensemble d'attributs d'état, l'ensemble d'attributs d'état étant utilisé pour un enregistrement de valeurs d'attribut d'état historiques destiné à une opération d'économie d'énergie effectuée sur le dispositif mobile ; et lorsque la première valeur d'attribut d'état correspond à la seconde valeur d'attribut d'état, l'exécution d'un traitement d'économie d'énergie sur le dispositif mobile.
Patent WO-2019128605-A1 (WO)
Title: 输出模组、输入输出模组及电子装置
Inventor: WU ANPING
IPC: G06K9/00
Filed: 2018-11-28
Abstract: 一种输出模组(10)。输出模组(10)包括封装壳体(11)、第一红外光源(12)、及环绕第一红外光源(12)设置的第二红外光源(13)。封装壳体(11)包括封装基板(111)。第一红外光源(12)与第二红外光源(13)封装在封装壳体(11)内并承载在封装基板(111)上。当第二红外光源(13)关闭，第一红外光源(12)以第一功率向封装壳体外(11)发射红外光线时，输出模组(10)用作接近红外灯；当第一红外光源(12)与第二红外光源(13)均开启并以第二功率向封装壳体(11)外发射红外光线时，输出模组(10)用作红外补光灯。
Patent WO-2019114763-A1 (WO)
Title: 吹吸机
Inventor: YU XUEFENG
IPC: E01H1/08
Filed: 2018-12-12
Abstract: 一种吹吸机(100)，其包括机身(1)、气流产生装置(3)、收集装置以及吹吸管(2)，气流产生装置(3)具有进风部(331)和出风部(332)；气流产生装置(3)能转动地安装到机身(1)，通过使气流产生装置(3)相对于机身(1)转动而使吹吸机(100)在吸风模式和吹风模式之间转换。在吸风模式，气流产生装置(3)的进风部(331)与吹吸管(2)的第一端(21)流体连通，气流产生装置的出风部(332)与收集装置的连接接口流体连通；在吹风模式，气流产生装置的出风部(332)与吹吸管的第一端(21)流体连通。该吹吸机(100)中，吹吸共用一管，吹吸切换无需拆下吹吸管(2)互换，只需使气流产生装置(3)相对于机身(1)转动一定角度就可实现吹吸切换。人机交互好，改善了用户的使用舒适度，提高了用户的使用效率。
Patent WO-2020124639-A1 (WO)
Title: 一种简易折边装置
Inventor: JI KAICHENG
IPC: B31B50/26
Filed: 2018-12-26
Abstract: 一种简易折边装置，包括底板（1），底板（1）的上部居中固定安装有U型固定架（3），且底板（1）的底部对称设有偶数个支腿（2），U型固定架（3）的上部内部通过滚动轴承并列安装有若干支撑轴（36），若干支撑轴（36）的外部均固定安装有橡胶辊（67），该装置加工质量较好，可有效防止纸屑粉尘弥漫在该折边机周围，制备的橡胶辊韧性较好，抗老化性能较好。
Patent WO-2020000961-A1 (WO)
Inventor: ZHANG ZHIWEI
IPC: G06V10/764
Filed: 2018-12-26
Abstract: A method, device, and server for image tag identification. The method comprises: constructing a tag route diagram on the basis of pre-tagged sample images and a pre-trained first image classification model (101); selecting multiple sample images from the pre-tagged sample images (102); by means of the tag route diagram, determining the most similar sample image and the most-difficult sample image of each sample image among the multiple sample images (103), where each sample image constitutes images pairs with the most similar sample image corresponding thereto and the most-difficult sample image corresponding thereto; constructing a target loss function according to the image pairs and training according to the target loss function to produce a second image classification model (104); and performing tag identification with respect to an image to be identified via the second image classification model (105). The image tag identification method allows refined tag classifications and increases the tag identification accuracy of the target classification model.
Patent WO-2019129185-A1 (WO)
Inventor: FAN LONG
IPC: C12N15/10
Filed: 2018-12-28
Abstract: L'invention concerne un procédé permettant de préparer rapidement un modèle de séquençage de Sanger, consistant à : effectuer un traitement de dénaturation sur un échantillon contenant de l'ADN circulaire ; effectuer une amplification par cercle roulant du produit de dénaturation ; et traiter le produit d'amplification par cercle roulant avec une phosphatase alcaline pour éliminer le dNTP résiduel.
Patent WO-2020142859-A1 (WO)
Inventor: LAI TZUNG-SHEN
IPC: D21J3/00
Filed: 2019-01-09
Abstract: La présente invention concerne une machine automatique de formation d'aspiration de pâte pour des produits moulés en pâte et un procédé de fabrication. La machine de formation est composée d'une boîte de pâte (20), d'un moule d'aspiration de pâte inférieur (10), d'un moule supérieur de pression à froid (30), d'un moule supérieur de pression à chaud (41), d'un moule inférieur de pression à chaud (42) et d'un plateau de réception de matériau (50). Lors de la fabrication de produits, le moule d'aspiration de pâte inférieur (10) pénètre dans la boîte de pâte (20) pour former une couche d'ébauche par aspiration de pâte ; le moule d'aspiration de pâte inférieur (10) monte et se serre avec le moule supérieur de pression à froid (30) pour former un produit d'ébauche préliminaire ; le moule d'aspiration de pâte inférieur (10) aspire le produit d'ébauche préliminaire pour être libéré du moule supérieur de pression à froid (30) et tomber ; le moule supérieur de pression à froid (30) et le moule supérieur de pression à chaud (41) se déplacent latéralement le long d'un rail de guidage (11) pour transférer le produit d'ébauche préliminaire pour une aspiration par le moule supérieur de pression à chaud (41) ; puis le moule inférieur de pression à chaud (42) monte et se serre avec le moule supérieur de pression à chaud (41) pour mouler le produit d'ébauche préliminaire en un produit fini au moyen d'une pression à chaud ; après l'achèvement, le moule inférieur de pression à chaud (42) retombe en position, et le moule supérieur de pression à chaud (41) aspire et déplace le produit fini au-dessus du plateau de réception de matériau (50) ; puis le plateau de réception de matériau (50) monte et le produit fini est libéré du moule supérieur de pression à chaud (41) et tombe sur le plateau de réception de matériau (50) ; et enfin, le plateau de réception de matériau (50) retombe en position.
Patent WO-2019192231-A1 (WO)
Title: Product positioning method and device, apparatus, and storage medium
Inventor: HOU SHIGUO
IPC: G06Q30/06
Filed: 2019-01-04
Abstract: The present invention provides a product positioning method and device, an apparatus, and a storage medium. The method comprises: acquiring map information comprising multiple pieces of shelf identity information, wherein the multiple pieces of shelf identity information correspond one-to-one to shelves; acquiring shelf image information corresponding to the shelf identity information; identifying, according to the shelf image information, a product corresponding to each electronic price tag device on a corresponding shelf and a first position relationship between each electronic price tag device and the shelf on which the electronic price tag device is located; and generating, according to the first position relationship and the map information, position information of each product. The present invention acquires map information tagged with shelf identity information, and acquires shelf image information that can be used to identify a position of an electronic price tag device in a shelf, thereby allowing a shelf to be positioned in a map, allowing a product corresponding to an electronic price tag device to be positioned on the shelf, and achieving automatic and accurate positioning of a product in the crowded display environment of a supermarket.
Patent WO-2020024561-A1 (WO)
Title: Thin film transistor and preparation method therefor and array substrate
Inventor: XIE HUAFEI
IPC: H01L29/861
Filed: 2019-01-09
Abstract: Disclosed are a thin film transistor and a preparation method therefor and an array substrate. The thin film transistor (10) comprises a substrate (1), a grid electrode (2), a grid insulating layer (3), a first metal layer (4), an active layer (5), a second metal layer (6) and a passivation layer (7); the grid electrode (2) is disposed on the substrate (1); the grid insulating layer (3) covers the grid electrode (2); the first metal layer (4) comprises a first electrode (41) and a second electrode (42), which are disposed on the grid insulating layer (3) at an interval; the second metal layer (6) comprises a source electrode (61) and a drain electrode (62), which are disposed at an interval; one end of the active layer (5) is sandwiched between the first electrode (41) and the source electrode (61); the other end of the active layer (5) is sandwiched between the second electrode (42) and the drain electrode (62); the passivation layer (7) covers on the exposed surface of the source electrode (61), the drain electrode (62) and the active layer (5); and the active layer (5) is sandwiched between the first metal layer (4) and the second metal layer (6) to improve the contact performance of the active layer (5) and the second metal layer (6). According to the preparation method, the first metal layer (4) and the second metal layer (6) are formed by twice compositional processes, and chamfering is thus avoided.