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    • 2. 发明授权
    • Scanning signal line drive circuit and display device having the same
    • 扫描信号线驱动电路和具有相同功能的显示装置
    • US08803785B2
    • 2014-08-12
    • US13636148
    • 2011-01-18
    • Yoshihisa TakahashiYasuaki Iwase
    • Yoshihisa TakahashiYasuaki Iwase
    • G09G3/36G11C19/28H01L27/32H03K3/356G11C19/18
    • G11C19/28G09G3/3677G11C19/184H01L27/32H03K3/356026
    • Stability of a circuit operation in a monolithic gate driver is improved. A bistable circuit is provided with a charge replenishment circuit (71) including: a capacitor (CAP2); a thin-film transistor (MA) having a first electrode supplied with a first clock for charge replenishment (CKA), a second electrode connected to a third-node (N3) connected to one end of the capacitor (CAP2), and a third electrode connected to a second-node (N2) to be maintained at the high level during a normal operation period; and a thin-film transistor (MB) having a first electrode supplied with a second clock for charge replenishment (CKB), a second electrode supplied with a high-level DC power supply potential (VDD), and a third electrode connected to the third-node (N3). The first clock for charge replenishment (CKA) and the second clock for charge replenishment (CKB) are alternately driven to the high level so as to eliminate a period in which “the first clock for charge replenishment (CKA) is at the high level and the second clock for charge replenishment (CKB) is at the high level”.
    • 提高了单片栅极驱动器中电路操作的稳定性。 双稳电路设有电荷补充电路(71),包括:电容器(CAP2); 具有提供有用于充电补充的第一时钟(CKA)的第一电极的薄膜晶体管(MA),连接到连接到电容器(CAP2)的一端的第三节点(N3))的第二电极,以及第三电极 连接到第二节点(N2)的电极在正常操作期间保持在高电平; 以及薄膜晶体管(MB),具有提供有用于充电补充的第二时钟(CKB)的第一电极,提供有高电平直流电源电位(VDD)的第二电极和连接到第三电极 节点(N3)。 充电补充(CKA)的第一时钟和充电补充(CKB)的第二时钟被交替地驱动到高电平,以消除“充电充电(CKA)的第一时钟处于高电平的时段,以及 充电补充的第二个时钟(CKB)处于高位“。
    • 3. 发明申请
    • SCANNING SIGNAL LINE DRIVE CIRCUIT, DISPLAY DEVICE HAVING THE SAME, AND DRIVING METHOD FOR SCANNING SIGNAL LINE
    • 扫描信号线驱动电路,具有该扫描信号线驱动电路的显示装置以及扫描信号线的驱动方法
    • US20140111495A1
    • 2014-04-24
    • US14117959
    • 2012-05-16
    • Yasuaki Iwase
    • Yasuaki Iwase
    • H03K3/012G09G3/36
    • H03K3/012G09G3/3677G09G3/3696G09G2310/0286G11C19/28
    • The purpose of this invention is to increase reliability of a switching element while reducing consumption power. In the vertical blanking period, an end pulse signal (ED) changes from the low level to the high level. The potential of first nodes (N1) in the first stage to (m−1)th stage of cascade-connected m-stage bistable circuits included in a shift register of the scanning signal drive circuit is reliably maintained at the low level, and the potential of second nodes (N2) in the first stage to the (m−1)th stage changes from the high level to the low level. In a bistable circuit in the m-th stage, the potential of the first node (N1) in the m-th stage changes from the high level to the low level, and the potential of the second node (N2) in the m-th stage is maintained at the low level. The supply to a bistable circuit of clock signals (CKA, CKB) is stopped. Until a write period in the subsequent vertical scanning period, the potential of the first node (N1) and the potential of the second node (N2) in each stage are maintained at the low level.
    • 本发明的目的是提高开关元件的可靠性,同时降低功耗。 在垂直消隐期间,结束脉冲信号(ED)从低电平变为高电平。 包括在扫描信号驱动电路的移位寄存器中的级联连接的m级双稳态电路的第一级到第(m-1)级的第一级(N1)的电位被可靠地保持在低电平, 第一级到第(m-1)级的第二节点(N2)的电位从高电平变为低电平。 在第m阶段的双稳态电路中,第m阶段的第1节点(N1)的电位从高电平变化到低电平,第m节点的第2节点(N2) 第三阶段维持在低水平。 时钟信号(CKA,CKB)的双稳态电路的供给停止。 直到在随后的垂直扫描周期中的写入周期,第一节点(N1)的电位和每个级中的第二节点(N2)的电位保持在低电平。
    • 4. 发明授权
    • Signal distribution device and display device
    • 信号分配装置和显示装置
    • US08593210B2
    • 2013-11-26
    • US13144464
    • 2009-09-29
    • Mayuko SakamotoYoshihisa TakahashiYasuaki Iwase
    • Mayuko SakamotoYoshihisa TakahashiYasuaki Iwase
    • H03K17/687
    • H01L29/458G02F1/13454G02F2001/13606G02F2201/124G09G3/3648G09G3/3655G09G3/3688H01L27/1214H01L27/1225H01L27/124H01L29/7869
    • A peripheral region of a display panel includes a signal distribution device (4) for time-dividing and distributing, to output terminals (7), an output signal from a source driver. The signal distribution device (4) includes switching elements (20) for the output terminals (7). Each switching element (20) is controlled by a selection signal supplied to a control line (9) connected with a gate electrode. Each switching element (20) includes a source electrode and the drain electrode each having a comb-like shape having a stem part and branch parts extending therefrom. In at least one switching element (20), only all of or part of the branch parts overlap the control line (9) and a semiconductor layer (10). This suppresses abnormal heat generation of a source driver in a display device including the signal distribution circuit by which an output signal from the source driver is distributed to pixels in time series.
    • 显示面板的外围区域包括:信号分配装置(4),用于对输出端子(7)进行分时和分配来自源极驱动器的输出信号。 信号分配装置(4)包括用于输出端子(7)的开关元件(20)。 每个开关元件(20)由提供给与栅电极连接的控制线(9)的选择信号控制。 每个开关元件(20)包括源电极和漏电极,每个具有梳状形状,其具有杆部分和从其延伸的分支部分。 在至少一个开关元件(20)中,只有全部或部分分支部分与控制线(9)和半导体层(10)重叠。 这抑制了包括信号分配电路的显示装置中的源极驱动器的异常发热,通过该信号分配电路,来自源极驱动器的输出信号以时间序列分布到像素。
    • 5. 发明授权
    • Display device and drive method for driving the same
    • 显示装置及其驱动方法
    • US08587509B2
    • 2013-11-19
    • US12998517
    • 2009-06-12
    • Yoshihisa TakahashiYasuaki IwaseMayuko Sakamoto
    • Yoshihisa TakahashiYasuaki IwaseMayuko Sakamoto
    • G09G3/36
    • G09G3/3688G09G2310/027G09G2310/0297G09G2320/0219
    • A display device of at least one embodiment of the present invention has a connection changeover circuit, including switch elements for time-division driving, formed on a liquid crystal panel, and the switch elements are paired so that two switch elements in each pair are connected in parallel to one video signal line. The paired switch elements are turned on at the same time, and immediately before one of the switch elements is turned off upon completion of a charging period for its corresponding video signal line, only the other switch element is turned off. As a result, while maintaining drive performance, it is possible to solve the impact of fieldthrough phenomenon caused by one of the switch elements, which are transistors, and also reduce parasitic capacitance formed in the other switch element, thereby suppress the impact of fieldthrough phenomenon caused by that switch element.
    • 本发明的至少一个实施例的显示装置具有形成在液晶面板上的包括用于时分驱动的开关元件的连接切换电路,并且开关元件配对,使得每对中的两个开关元件被连接 与一条视频信号线并联。 成对的开关元件同时导通,并且在其相应的视频信号线的充电周期完成之后,在其中一个开关元件关闭之前,只有另一个开关元件被关断。 结果,在保持驱动性能的同时,可以解决由作为晶体管的开关元件之一引起的场通过现象的影响,并且还减少在另一个开关元件中形成的寄生电容,从而抑制场通现象的影响 由该开关元件引起。
    • 6. 发明申请
    • SCANNING SIGNAL LINE DRIVE CIRCUIT AND DISPLAY DEVICE PROVIDED WITH SAME
    • 扫描信号线驱动电路和显示设备提供
    • US20130093743A1
    • 2013-04-18
    • US13805781
    • 2011-05-20
    • Yoshihisa TakahashiYasuaki Iwase
    • Yoshihisa TakahashiYasuaki Iwase
    • G09G5/00
    • G09G5/001G09G3/3677G09G2310/0286G09G2310/06G11C19/184G11C19/28
    • In a monolithic gate driver, a power consumption is reduced as compared with a conventional one without lowering a voltage of a scanning signal to be applied to a gate bus line as compared with a conventional one.A stage constituent circuit includes first-node to third-node, a thin-film transistor (M7) that changes a potential of a scanning signal toward a VDD potential when a potential of the first-node is in a HIGH level, a thin-film transistor (M6) that changes a potential of a different stage control signal toward a potential of a clock (CKA) when a potential of the second-node is in the HIGH level, a capacitor (C1) that is disposed between the first-node and the second-node, and a capacitor (C2) that is disposed between the second-node and the third-node. The potential of the first-node is raised on the basis of a different stage control signal output from the stage constituent circuit in the different stage, and then the potential of the second-node and a potential of the third-node are sequentially raised. Herein, an amplitude of the clock is set to be smaller than an amplitude of the scanning signal.
    • 在单片栅极驱动器中,与常规栅极驱动器相比,与常规栅极驱动器相比,功率消耗降低,而不降低要施加到栅极总线的扫描信号的电压。 阶段构成电路包括第一节点至第三节点,当第一节点的电位处于高电平时,将扫描信号的电位改变为VDD电位的薄膜晶体管(M7) 当第二节点的电位处于高电平时,将不同级控制信号的电位变化为时钟(CKA)的电位的薄膜晶体管(M6);电容器(C1) 节点和第二节点,以及设置在第二节点和第三节点之间的电容器(C2)。 第一节点的电位根据在不同级中的级构成电路输出的不同级控制信号而增加,然后第二节点的电位和第三节点的电位依次上升。 这里,时钟的幅度被设定为小于扫描信号的幅度。
    • 7. 发明申请
    • SCANNING SIGNAL LINE DRIVE CIRCUIT AND DISPLAY DEVICE HAVING THE SAME
    • 扫描信号线驱动电路和具有该信号的显示装置
    • US20120320008A1
    • 2012-12-20
    • US13580466
    • 2010-10-14
    • Yoshihisa TakahashiYasuaki Iwase
    • Yoshihisa TakahashiYasuaki Iwase
    • G06F3/038
    • G09G3/3677G02F1/13454G09G2310/0283G09G2310/0286G11C19/184G11C19/28
    • A bistable circuit includes an input terminal (41) for a set signal, an input terminal (42) for a reset signal, an output terminal (48) for a state signal, a thin-film transistor (M2) for increasing a potential of the output terminal (48) based on a first clock, a thin-film transistor (M1) for increasing a potential of a first-node connected to a gate terminal of the thin-film transistor (M2) based on the set signal, a thin-film transistor (M5) for decreasing the potential of the first-node, a thin-film transistor (M7) for increasing a potential of a second-node connected to a gate terminal of the thin-film transistor (M5) based on the reset signal, a thin-film transistor (M6) for decreasing the potential of the output terminal (48) based on the potential of the second-node, a thin-film transistor (M3) for increasing the potential of the second-node based on the set signal, and a capacitor (CAP2) having one end connected to the second-node and the other end connected to the input terminal (41).
    • 双稳态电路包括用于设定信号的输入端(41),用于复位信号的输入端(42),用于状态信号的输出端(48),用于增加电位的电位的薄膜晶体管(M2) 基于第一时钟的输出端子(48),用于基于所设置的信号增加连接到薄膜晶体管(M2)的栅极端子的第一节点的电位的薄膜晶体管(M1), 用于降低第一节点的电位的薄膜晶体管(M5),用于增加连接到薄膜晶体管(M5)的栅极端子的第二节点的电位的薄膜晶体管(M7),基于 复位信号,用于基于第二节点的电位减小输出端子(48)的电位的薄膜晶体管(M6),用于增加第二节点的电位的薄膜晶体管(M3) 基于所设置的信号,以及电容器(CAP2),其一端连接到第二节点,另一端连接到输入端子 nal(41)。