公开(公告)号：US20160086560A1

公开(公告)日：2016-03-24

申请号：US14959777

申请日：2015-12-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki Miyake ,  Kouhei TOYOTAKA ,  Shunpei YAMAZAKI

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G3/3677 ,  G09G2300/0809 ,  G09G2310/0286 ,  G09G2310/0291 ,  G11C19/28 ,  H01L27/1222 ,  H01L27/124

Abstract: To provide a semiconductor device including a narrowed bezel obtained by designing a gate driver circuit. A gate driver of a display device includes a shift register unit, a demultiplexer circuit, and n signal lines. By connecting the n signal lines for transmitting clock signals to one stage of the shift register unit, (n−3) output signals can be output. The larger n becomes, the smaller the rate of signal lines for transmitting clock signals which do not contribute to output becomes; accordingly, the area of the shift register unit part is small compared to a conventional structure in which one stage of a shift register unit outputs one output signal. Therefore, the gate driver circuit can have a narrow bezel.

公开(公告)号：US20150293420A1

公开(公告)日：2015-10-15

申请号：US14749686

申请日：2015-06-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei TOYOTAKA ,  Koji KUSUNOKI

IPC: G02F1/1362 ,  G09G3/36 ,  G02F1/1368

CPC classification number: G02F1/136213 ,  G02F1/136277 ,  G02F1/136286 ,  G02F1/1368 ,  G09G3/3648 ,  G09G2330/021 ,  G09G2330/027

Abstract: It is an object to provide a liquid crystal display device and a driving method of a liquid crystal display device in each of which deterioration of an image display function can be suppressed and power consumption can be sufficiently reduced. In the liquid crystal display device, a fixed potential is input to a capacitor before a power source is turned off, so that a potential difference between electrodes of the capacitor disappears (capacitance becomes almost zero) such that electric field is not applied to liquid crystals, whereby the liquid crystals are in an initial state. When the supply of the power source is stopped after an initial-state image is displayed, unnecessary electric field is not continuously applied to the liquid crystals in an off state, whereby the liquid crystals can be in the stable initial state; therefore, the liquid crystals can be prevented from deteriorating.

Abstract translation: 本发明的目的是提供一种能够抑制图像显示功能的劣化并且能够充分降低功耗的液晶显示装置的液晶显示装置和驱动方法。 在液晶显示装置中，在电源关闭之前将固定电位输入到电容器，使得电容器的电极之间的电位差消失（电容变为几乎为零），使得电场不施加于液晶 ，由此液晶处于初始状态。 当在显示初始状态图像之后停止电源的供给时，在关闭状态下不会对液晶持续施加不必要的电场，从而液晶可以处于稳定的初始状态; 因此，可以防止液晶的劣化。

公开(公告)号：US20140300399A1

公开(公告)日：2014-10-09

申请号：US14221523

申请日：2014-03-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroyuki MIYAKE ,  Kouhei TOYOTAKA

IPC: H03K3/356

CPC classification number: G09G3/3677 ,  G09G3/3266 ,  G09G3/3648 ,  G09G3/3696 ,  G09G5/18 ,  G09G2300/0404 ,  G09G2300/0413 ,  G09G2310/0205 ,  G09G2310/0286 ,  G09G2310/0291 ,  G11C19/28 ,  H03K3/356026

Abstract: Two gate drivers each comprising a shift register and a demultiplexer including single conductivity type transistors are provided on left and right sides of a pixel portion. Gate lines are alternately connected to the left-side and right-side gate drivers in every M rows. The shift register includes k first unit circuits connected in cascade. The demultiplexer includes k second unit circuits to each of which a signal is input from the first unit circuit and to each of which M gate lines are connected. The second unit circuit selects one or more wirings which output an input signal from the first unit circuit among M gate lines, and outputs the signal from the first unit circuit to the selected wiring(s). Since gate signals can be output from an output of a one-stage shift register to the M gate lines, the width of the shift register can be narrowed.

Abstract translation: 在像素部分的左侧和右侧设置两个包括移位寄存器和包括单导电型晶体管的解复用器的栅极驱动器。 栅极线在每M行中交替连接到左侧和右侧栅极驱动器。 移位寄存器包括串联连接的k个第一单元电路。 解复用器包括k个第二单位电路，其中每个电路从第一单元电路输入信号，并且连接M个栅极线。 第二单元电路选择在M个栅极线之间输出来自第一单位电路的输入信号的一个或多个布线，并将来自第一单元电路的信号输出到所选择的布线。 由于门信号可以从一级移位寄存器的输出输出到M条栅极线，所以移位寄存器的宽度可以变窄。

公开(公告)号：US20130241431A1

公开(公告)日：2013-09-19

申请号：US13783809

申请日：2013-03-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kouhei TOYOTAKA ,  Koji KUSUNOKI

IPC: H05B37/02

CPC classification number: H05B37/02 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/0245 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/0286 ,  G09G2320/0257 ,  G09G2320/043 ,  G09G2330/026 ,  G09G2330/027 ,  G11C19/28

Abstract: Provided is a light-emitting device which can prevent appearance of an after-image after power on. Before or after supply of a power voltage applied to a light-emitting element is cut, a potential of a gate electrode of a transistor controlling the supply of the power voltage to the light-emitting element is initialized. Specifically, in the case where the transistor is n-channel type, the potential of the gate electrode is initialized so that a gate voltage is equal to or lower than a threshold voltage. In the case where the transistor is p-channel type, the potential of the gate electrode is initialized so that the gate voltage is equal to or higher than the threshold voltage.

Abstract translation: 提供一种能够防止在接通电源后出现后置图像的发光装置。 在施加到发光元件的电源电压的供给之前或之后，控制向发光元件供给电力电压的晶体管的栅电极的电位被初始化。 具体地，在晶体管为n沟道型的情况下，初始化栅电极的电位，使得栅极电压等于或低于阈值电压。 在晶体管是p沟道型的情况下，初始化栅电极的电位，使得栅极电压等于或高于阈值电压。

公开(公告)号：US20250072115A1

公开(公告)日：2025-02-27

申请号：US18944201

申请日：2024-11-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hisao IKEDA ,  Kouhei TOYOTAKA ,  Hideaki SHISHIDO ,  Hiroyuki MIYAKE ,  Kohei YOKOYAMA ,  Yasuhiro JINBO ,  Yoshitaka DOZEN ,  Takaaki NAGATA ,  Shinichi HIRASA

IPC: H01L27/12 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/36 ,  G09G5/391 ,  H01L29/786 ,  H10K59/131 ,  H10K59/35

Abstract: Provided is a display device with extremely high resolution, a display device with higher display quality, a display device with improved viewing angle characteristics, or a flexible display device. Same-color subpixels are arranged in a zigzag pattern in a predetermined direction. In other words, when attention is paid to a subpixel, another two subpixels exhibiting the same color as the subpixel are preferably located upper right and lower right or upper left and lower left. Each pixel includes three subpixels arranged in an L shape. In addition, two pixels are combined so that pixel units including subpixel are arranged in matrix of 3×2.

公开(公告)号：US20240363069A1

公开(公告)日：2024-10-31

申请号：US18685010

申请日：2022-08-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kouhei TOYOTAKA ,  Kazuma FURUTANI

IPC: G09G3/3233 ,  G09G3/20 ,  H10K39/34 ,  H10K59/13 ,  H10K59/40 ,  H10K71/70

CPC classification number: G09G3/3233 ,  G09G3/2074 ,  H10K71/70 ,  G09G2354/00 ,  G09G2360/10 ,  G09G2360/142 ,  G09G2360/148 ,  H10K39/34 ,  H10K59/13 ,  H10K59/40

Abstract: A novel correction method for a display apparatus is provided. A correction circuit of the display apparatus obtains offset corresponding to a current flowing through a second subpixel when a first subpixel is not lit. The correction circuit of the display apparatus obtains, for each pixel, correction output data, obtained by correcting, with the offset, data corresponding to a current flowing through each of the second subpixels in sequentially supplying correction video data to the first subpixels and stores the correction video data and the correction output data corresponding to the correction video data in a memory circuit. The correction circuit of the display apparatus calculates coefficients obtained when a relation between the correction video data and the correction output data corresponding to the correction video data is approximated by a quadratic expression and stores the coefficients in the memory circuit. The correction circuit of the display apparatus stores a correction table that is created on the basis of the correction output data and the coefficients, in the memory circuit. The correction circuit of the display apparatus corrects display video data in accordance with the correction table.

公开(公告)号：US20240234310A1

公开(公告)日：2024-07-11

申请号：US18560959

申请日：2022-05-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yoshiyuki KUROKAWA ,  Hiromichi GODO ,  Kazuki TSUDA ,  Kouhei TOYOTAKA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU ,  Hideki UOCHI

IPC: H01L23/528 ,  H01L29/24

CPC classification number: H01L23/528 ,  H01L29/24

Abstract: A novel semiconductor device is provided. In reservoir computing using an input layer, a reservoir layer, and an output layer, variation in threshold voltage between transistors is used as a weight used for product arithmetic processing. Two transistors are provided in one product arithmetic circuit and data u is supplied to gates of the two transistors. Drain current of each of the transistors is determined by the data u and the threshold voltage of the transistor. The difference between the drain currents corresponds to a product arithmetic result. The difference between the drain currents is converted into voltage to be output. A plurality of product arithmetic circuits are connected in parallel to form a product-sum arithmetic circuit.

公开(公告)号：US20240118344A1

公开(公告)日：2024-04-11

申请号：US18377458

申请日：2023-10-06

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kei TAKAHASHI ,  Kouhei TOYOTAKA

IPC: G01R31/3842 ,  G01R19/165 ,  G01R31/367 ,  H01M10/0525 ,  H01M10/48

CPC classification number: G01R31/3842 ,  G01R19/16576 ,  G01R31/367 ,  H01M10/0525 ,  H01M10/48

Abstract: A secondary battery control system that conducts abnormality detection while predicting other parameters (internal resistance, SOC, and the like) with high accuracy is provided. A difference between an observation value (voltage) at a certain point in time and a voltage that is estimated using a prior-state variable is sensed. A threshold voltage is set in advance, and from the voltage difference that is sensed, a sudden abnormality, specifically a micro-short circuit or the like is detected. Furthermore, it is preferable that detection be performed by using a neural network to learn data on voltage difference in a time series and determine abnormality or normality.

公开(公告)号：US20240112629A1

公开(公告)日：2024-04-04

申请号：US18531931

申请日：2023-12-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei TOYOTAKA ,  Daiki NAKAMURA

IPC: G09G3/3225 ,  H10K50/86 ,  H10K59/131 ,  H10K59/38 ,  H10K59/40

CPC classification number: G09G3/3225 ,  H10K50/86 ,  H10K50/865 ,  H10K59/131 ,  H10K59/38 ,  H10K59/40 ,  G06F3/013

Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a display region, a first functional layer, and a second functional layer. The display region includes a pixel, and the pixel includes a display element and a pixel circuit. The first functional layer includes the pixel circuit, a scan line, and a first connection portion. The display element is electrically connected to the pixel circuit, and the pixel circuit is electrically connected to the scan line. The second functional layer includes a region overlapping with the first functional layer, the second functional layer includes a driver circuit and a wiring, and the driver circuit is provided so that the pixel circuit is positioned between the driver circuit and the display element. The wiring is electrically connected to the scan line at the first connection portion, and the wiring is electrically connected to the driver circuit.

公开(公告)号：US20230350256A1

公开(公告)日：2023-11-02

申请号：US18202557

申请日：2023-05-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kouhei TOYOTAKA ,  Kazunori WATANABE ,  Susumu KAWASHIMA ,  Kei TAKAHASHI ,  Koji KUSUNOKI ,  Masataka NAKADA ,  Ami SATO

IPC: G02F1/1368 ,  G02F1/1362

CPC classification number: G02F1/1368 ,  G02F1/136227

Abstract: A liquid crystal display device with a high aperture ratio is provided. The display device includes a transistor, a first insulating layer, a second insulating layer, a third insulating layer, a first conductive layer, a pixel electrode, a common electrode, and a liquid crystal layer in a pixel. The first insulating layer is positioned over a channel formation region of the transistor. The first conductive layer is positioned over the first insulating layer. The second insulating layer is positioned over the transistor, the first insulating layer, and the first conductive layer. The pixel electrode is positioned over the second insulating layer, the third insulating layer is positioned over the pixel electrode, the common electrode is positioned over the third insulating layer, and the liquid crystal layer is positioned over the common electrode. The common electrode includes a region overlapping with the first conductive layer with the pixel electrode positioned therebetween. The pixel includes a first connection portion where the pixel electrode is electrically connected to the transistor and a second connection portion where the first conductive layer is electrically connected to the common electrode. The first conductive layer, the pixel electrode, and the common electrode each have a function of transmitting visible light.