公开(公告)号：US09368527B2

公开(公告)日：2016-06-14

申请号：US14874605

申请日：2015-10-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Mai Akiba ,  Jun Koyama

IPC: H01L27/12 ,  H01L27/32 ,  H01L27/15 ,  H01L27/13 ,  H01L29/66 ,  G09G3/20 ,  H01L29/49 ,  G09G3/22 ,  H01L33/32 ,  H01L33/20

CPC classification number: H01L27/3248 ,  G09G3/2018 ,  G09G3/2022 ,  G09G3/22 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/325 ,  G09G3/3258 ,  G09G3/3283 ,  G09G2300/04 ,  G09G2300/0426 ,  G09G2300/0814 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/0256 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/028 ,  G09G2330/04 ,  G09G2330/045 ,  H01L27/12 ,  H01L27/124 ,  H01L27/1255 ,  H01L27/1285 ,  H01L27/13 ,  H01L27/15 ,  H01L27/3244 ,  H01L27/3258 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276 ,  H01L27/3279 ,  H01L29/4908 ,  H01L29/66757 ,  H01L33/20 ,  H01L33/32 ,  H01L51/0036 ,  H01L51/0038 ,  H01L51/0039 ,  H01L51/0059 ,  H01L51/0073 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0087 ,  H01L51/5259 ,  H01L2227/323 ,  H01L2251/308

Abstract: By controlling the luminance of light emitting element not by means of a voltage to be impressed to the TFT but by means of controlling a current that flows to the TFT in a signal line drive circuit, the current that flows to the light emitting element is held to a desired value without depending on the characteristics of the TFT. Further, a voltage of inverted bias is impressed to the light emitting element every predetermined period. Since a multiplier effect is given by the two configurations described above, it is possible to prevent the luminance from deteriorating due to a deterioration of the organic luminescent layer, and further, it is possible to maintain the current that flows to the light emitting element to a desired value without depending on the characteristics of the TFT.

公开(公告)号：US09299296B2

公开(公告)日：2016-03-29

申请号：US13949258

申请日：2013-07-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Jun Koyama

IPC: G09G5/00 ,  G09G3/36 ,  G11C19/28 ,  G02F1/1368 ,  H03K17/30

CPC classification number: G09G3/36 ,  G02F1/1368 ,  G09G3/3677 ,  G09G2300/0408 ,  G09G2300/043 ,  G09G2300/0495 ,  G09G2380/02 ,  G11C19/28 ,  H03K17/302 ,  H03K2217/0018

Abstract: A liquid crystal material is prevented from being degraded by a voltage to control the shift of the threshold voltage which is applied to a back gate on the same conductive film as a pixel electrode. A liquid crystal display device includes a pixel circuit including a pixel electrode which applies an electric field to a liquid crystal layer; and a driver circuit including a transistor including a first gate and a second gate with a semiconductor film interposed therebetween. The transistor overlaps with the liquid crystal layer. A signal for controlling on/off of the transistor is input to the first gate. A signal for applying a first voltage is input to the second gate in a gate line selection period. A signal for alternately applying the first voltage and a second voltage is input to the second gate in a vertical retrace period.

Abstract translation: 防止液晶材料被电压降级，以控制施加到与像素电极相同的导电膜上的背栅的阈值电压的偏移。 液晶显示装置包括像素电路，该像素电路包括向液晶层施加电场的像素电极; 以及包括晶体管的驱动器电路，所述晶体管包括第一栅极和第二栅极，半导体膜夹在其间。 晶体管与液晶层重叠。 用于控制晶体管的导通/截止的信号被输入到第一栅极。 用于施加第一电压的信号在栅极线选择周期中被输入到第二栅极。 用于交替施加第一电压和第二电压的信号在垂直回扫期间被输入到第二门。

公开(公告)号：US20160042685A1

公开(公告)日：2016-02-11

申请号：US14886994

申请日：2015-10-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun Koyama ,  Hajime Kimura

IPC: G09G3/30

CPC classification number: G09G3/3258 ,  G09G3/30 ,  G09G3/3225 ,  G09G3/3241 ,  G09G2300/0426 ,  G09G2310/0291 ,  G09G2320/0214 ,  G09G2320/0223 ,  G09G2330/021 ,  H01L27/124 ,  H01L27/3244 ,  H01L27/3248 ,  H01L27/3262 ,  H01L27/3276 ,  H01L27/3279 ,  H01L51/5221 ,  H01L2251/5353

Abstract: There is provided an active matrix EL display device that can display a clear multi gray-scale color display to reduce the shift in the potential caused by the potential drop due to the wiring resistance of a power source supply line, in order to decrease the unevenness in a display region. A plurality of drawing out ports of the power source supply line are arranged. Further, in the wiring resistance between the external input terminal and the pixel portion power source supply line, potential compensation is performed by supplying potential to the power source supply line by a feedback amplifier. Further, in addition to above structure, the power source supply line may be arranged in a matrix.

公开(公告)号：US09251748B2

公开(公告)日：2016-02-02

申请号：US14548966

申请日：2014-11-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun Koyama ,  Hiroyuki Miyake

IPC: G09G3/36 ,  G06F3/041 ,  G06F3/042 ,  G06F3/044 ,  G02F1/1345

CPC classification number: G09G3/3618 ,  G02F1/1345 ,  G06F3/0416 ,  G06F3/0421 ,  G06F3/044 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3696 ,  G09G2300/0809 ,  G09G2310/04 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0209 ,  G09G2320/0219 ,  G09G2320/10 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2340/0435 ,  G09G2340/16 ,  G09G2354/00

Abstract: The liquid crystal display device includes a first substrate provided with a terminal portion, a switching transistor, a driver circuit portion, and a pixel circuit portion including a pixel transistor and a plurality of pixels, a second substrate provided with a common electrode electrically connected to the terminal portion through the switching transistor, and liquid crystal between a pixel electrode and the common electrode. In a period during which a still image is switched to a moving image, the following steps are sequentially performed: a first step of supplying the common potential to the common electrode; a second step of supplying a power supply voltage to the driver circuit portion; a third step of supplying a clock signal to the driver circuit portion; and a fourth step of supplying a start pulse signal to the driver circuit portion.

公开(公告)号：US09236400B2

公开(公告)日：2016-01-12

申请号：US14193597

申请日：2014-02-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Yasuyuki Arai ,  Jun Koyama

IPC: H01L27/12 ,  H01L29/04 ,  H01L29/786 ,  G02F1/1345 ,  H01L23/552 ,  H01L23/60 ,  H01L23/00 ,  H01L27/146

CPC classification number: H01L27/1222 ,  G02F1/13454 ,  H01L23/552 ,  H01L23/60 ,  H01L24/83 ,  H01L27/12 ,  H01L27/1248 ,  H01L27/14601 ,  H01L29/78621 ,  H01L29/78624 ,  H01L2924/00011 ,  H01L2924/01079 ,  H01L2924/07811 ,  H01L2924/12042 ,  H01L2924/14 ,  H01L2224/83851 ,  H01L2924/00

Abstract: A p channel TFT of a driving circuit has a single drain structure and its n channel TFT, a GOLD structure or an LDD structure. A pixel TFT has the LDD structure. A pixel electrode disposed in a pixel portion is connected to the pixel TFT through a hole bored in at least a protective insulation film formed of an inorganic insulating material and formed above a gate electrode of the pixel TFT, and in an interlayer insulating film disposed on the insulation film in close contact therewith. These process steps use 6 to 8 photo-masks.

Abstract translation: 驱动电路的p沟道TFT具有单个漏极结构及其n沟道TFT，GOLD结构或LDD结构。 像素TFT具有LDD结构。 设置在像素部分中的像素电极通过在至少由无机绝缘材料形成的保护绝缘膜中钻孔并形成在像素TFT的栅电极之上的孔连接到像素TFT，并且在设置在像素TFT上的层间绝缘膜中 绝缘膜与其紧密接触。 这些处理步骤使用6到8张照片掩模。

公开(公告)号：US20160005874A1

公开(公告)日：2016-01-07

申请号：US14848486

申请日：2015-09-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Jun Koyama

IPC: H01L29/786 ,  H01L29/45 ,  H01L29/10 ,  H01L29/24 ,  H01L29/04

CPC classification number: H01L29/7869 ,  H01L27/1225 ,  H01L27/1255 ,  H01L29/045 ,  H01L29/0657 ,  H01L29/1033 ,  H01L29/24 ,  H01L29/45 ,  H01L29/78645 ,  H03K17/0822

Abstract: The semiconductor device includes a power element which is in an on state when voltage is not applied to a gate, a switching field-effect transistor for applying first voltage to the gate of the power element, and a switching field-effect transistor for applying voltage lower than the first voltage to the gate of the power element. The switching field-effect transistors have small off-state current.

Abstract translation: 该半导体器件包括：功率元件，其在不向栅极施加电压时处于导通状态，用于向功率元件的栅极施加第一电压的开关场效应晶体管，以及用于施加电压的开关场效应晶体管 低于功率元件的栅极的第一电压。 开关场效应晶体管具有小的截止电流。

公开(公告)号：US09219163B2

公开(公告)日：2015-12-22

申请号：US14662440

申请日：2015-03-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei Yamazaki ,  Jun Koyama

IPC: G02F1/136 ,  H01L29/786 ,  H01L29/66

CPC classification number: H01L29/7869 ,  G02F1/1368 ,  G02F2001/136231 ,  H01L27/1225 ,  H01L27/1255 ,  H01L27/1259 ,  H01L29/66969 ,  H01L29/78606

Abstract: The display device includes a gate electrode, a gate insulating film provided over the gate electrode, a semiconductor film provided over the gate insulating film to overlap with the gate electrode, an island-shaped first insulating film provided over the semiconductor film to overlap with the gate electrode, a first conductive film provided over the semiconductor film, a pair of second conductive films which is provided over the semiconductor film and between which the first insulating film is sandwiched, and a second insulating film provided over the first insulating film, the first conductive film, and the pair of second conductive films. In the second insulating film and the semiconductor film, an opening portion which is positioned between the first conductive film and the one or the other of the pair of second conductive films is provided.

公开(公告)号：US20150325172A1

公开(公告)日：2015-11-12

申请号：US14707414

申请日：2015-05-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun Koyama

IPC: G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0465 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/0256 ,  G09G2320/02 ,  G09G2320/0295 ,  G09G2320/043

Abstract: To improve display quality of a pixel of an organic EL panel. Display correction is performed in the pixel with a small number of transistors in the pixel of the organic EL panel. A capacitor and an oxide semiconductor transistor are formed in a display driver IC. A minute current flowing in the pixel is measured from the amount of change in capacitor voltage to correct display. Because the off-state current of an oxide semiconductor is extremely small even at high temperatures, current can be accurately measured and display images can be accurately corrected.

Abstract translation: 提高有机EL面板的像素的显示质量。 在有机EL面板的像素中的具有少量晶体管的像素中执行显示校正。 在显示驱动器IC中形成电容器和氧化物半导体晶体管。 从电容器电压的变化量测量流过像素的微小电流，以校正显示。 由于氧化物半导体的截止电流即使在高温下也极小，所以可以精确地测量电流，并可以精确地校正显示图像。

公开(公告)号：US09178177B2

公开(公告)日：2015-11-03

申请号：US14664167

申请日：2015-03-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Jun Koyama ,  Kunitaka Yamamoto ,  Toshimitsu Konuma

IPC: H01J1/62 ,  H01L23/31 ,  H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5253 ,  H01L23/3171 ,  H01L27/1214 ,  H01L27/1248 ,  H01L27/322 ,  H01L27/3244 ,  H01L27/3258 ,  H01L29/78621 ,  H01L51/529 ,  H01L51/56 ,  H01L2924/0002 ,  Y10S428/917 ,  H01L2924/00

Abstract: An object of the present invention is to provide an EL display device, which has a high operating performance and reliability.A third passivation film 45 is disposed under an EL element 203 which comprises a pixel electrode (anode) 46, an EL layer 47 and a cathode 48, to make a structure in which heat generated by the EL element 203 is radiated. Further, the third passivation film 45 prevents alkali metals within the EL element 203 from diffusing into the TFTs side, and prevents moisture and oxygen of the TFTs side from penetrating into the EL element 203. More preferably, heat radiating effect is given to a fourth passivation film 50 to make the EL element 203 to be enclosed by heat radiating layers.

Abstract translation: 本发明的目的是提供一种具有高操作性能和可靠性的EL显示装置。 第三钝化膜45设置在包括像素电极（阳极）46，EL层47和阴极48的EL元件203的下方，以形成其中辐射由EL元件203产生的热量的结构。 此外，第三钝化膜45防止EL元件203内的碱金属扩散到TFT侧，并且防止TFT侧的水分和氧气渗透到EL元件203中。更优选地，将散热效果提供给第四钝化膜 钝化膜50以使EL元件203被散热层包围。

公开(公告)号：US20150294621A1

公开(公告)日：2015-10-15

申请号：US14689959

申请日：2015-04-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun Koyama ,  Hajime KIMURA

IPC: G09G3/32 ,  H01L51/52 ,  H01L27/32

CPC classification number: G09G3/3258 ,  G09G3/30 ,  G09G3/3225 ,  G09G3/3241 ,  G09G2300/0426 ,  G09G2310/0291 ,  G09G2320/0214 ,  G09G2320/0223 ,  G09G2330/021 ,  H01L27/124 ,  H01L27/3244 ,  H01L27/3248 ,  H01L27/3262 ,  H01L27/3276 ,  H01L27/3279 ,  H01L51/5221 ,  H01L2251/5353

Abstract: There is provided an active matrix EL display device that can display a clear multi gray-scale color display to reduce the shift in the potential caused by the potential drop due to the wiring resistance of a power source supply line, in order to decrease the unevenness in a display region. A plurality of drawing out ports of the power source supply line are arranged. Further, in the wiring resistance between the external input terminal and the pixel portion power source supply line, potential compensation is performed by supplying potential to the power source supply line by a feedback amplifier. Further, in addition to above structure, the power source supply line may be arranged in a matrix.

Abstract translation: 提供了一种有源矩阵EL显示装置，其可以显示清晰的多灰度彩色显示器，以减少由于电源线的布线电阻引起的电位降低引起的电位偏移，以便减小不平坦度 在显示区域。 布置有电源供给线的多个引出口。 此外，在外部输入端子和像素部分电源线之间的布线电阻中，通过反馈放大器向电源线供给电位来进行电位补偿。 此外，除了上述结构之外，电源供给线可以以矩阵形式布置。