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    • 4. 发明申请
    • ELECTRONIC PAPER DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF
    • 电子纸显示装置及其制造方法
    • US20110063196A1
    • 2011-03-17
    • US12643828
    • 2009-12-21
    • Jeong Bok KWAKHwan-Soo LEEYoung Woo LEESang Moon LEE
    • Jeong Bok KWAKHwan-Soo LEEYoung Woo LEESang Moon LEE
    • G09G3/30H01J9/00
    • G02B26/026
    • There is provided an electronic paper display device and a manufacturing method thereof. The electronic paper display device includes a first substrate formed of a light transmitting material; a second substrate disposed to face the first substrate having a predetermined gap therebetween; at least one or more rotatable balls disposed between the first and second substrates and having electrical and optical anisotropy; and partitions dividing a space between the first and second substrates into a plurality of cell spaces accommodating the rotatable balls. The partitions are disposed to be spaced apart from each other with differing gaps therebetween in order to allow the cell spaces to have different sizes. When the same magnitude of voltage is applied to the rotatable balls disposed in the differently sized cell spaces, respective rotation angles of the rotatable balls become different, and accordingly a wide range of contrast levels is displayed.
    • 提供一种电子纸显示装置及其制造方法。 电子纸显示装置包括由透光材料形成的第一基板; 第二基板,被设置成面对所述第一基板,所述第一基板之间具有预定的间隙; 设置在第一和第二基板之间并具有电和光各向异性的至少一个或多个可旋转滚珠; 以及将所述第一和第二基板之间的空间分隔成容纳所述可旋转滚珠的多个单元空间的隔板。 分隔件设置成彼此间隔开并且间隙不同,以便允许电池空间具有不同的尺寸。 当相同大小的电压施加到设置在不同尺寸的单元空间中的可旋转滚珠时,可旋转滚珠的相应旋转角度变得不同,因此显示了宽范围的对比度。
    • 5. 发明申请
    • FOOD ORDER SERVICE SYSTEM
    • US20230064538A1
    • 2023-03-02
    • US17759262
    • 2020-05-12
    • Young Woo LEE
    • Young Woo LEE
    • G06Q30/06
    • The present invention relates to a food order service system, and objects of the present invention is to provide a food order service system in which a consumer can order and pay for a small amount of cooked or processed food easily and quickly, thereby allowing people to save a cooking time, and food expense caused by leftovers can be reduced. An embodiment of the present invention discloses a food order service system comprising: an operation server unit storing various types of food menu information and ingredient information for each of the food menu information, generating order information selected by an orderer based on the food menu information, transmitting the order information to a seller, and processing a payment for the order information; a seller service execution unit installed in a seller communication terminal, registering the food menu information and the ingredient information in the operation server unit, and receiving the order information from the operation server unit; and an orderer service execution unit installed in an orderer communication terminal, receiving the food menu information and the ingredient information from the operation server unit, classifying the food menu information by category, providing the classified food menu information to the orderer so that the orderer selects food menu in each category, generating the order information based on selected food menu information, and transmitting the order information to the operation server unit.