公开(公告)号：US09600107B2

公开(公告)日：2017-03-21

申请号：US14644814

申请日：2015-03-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Makoto Kaneyasu ,  Kazunori Watanabe ,  Hiroyuki Miyake

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0412 ,  G06F2203/04102

Abstract: To provide a touch panel in which a decrease in display quality is suppressed. The touch panel includes a touch sensor and a display element. The touch sensor includes a transistor and a sensor element. The transistor is electrically connected to the sensor element. The sensor element includes a pair of electrodes and a dielectric layer. The dielectric layer is positioned between the pair of electrodes. One of the pair of electrodes is an island-shaped electrode. The display element can display an image toward the touch sensor side. The island-shaped electrode does not overlap with a display region of the display element.

公开(公告)号：US08994439B2

公开(公告)日：2015-03-31

申请号：US13862932

申请日：2013-04-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Makoto Kaneyasu ,  Kouhei Toyotaka

IPC: H03K17/16 ,  G09G3/36 ,  G09G3/32 ,  H03K3/012

CPC classification number: H03K3/012 ,  G09G3/3266 ,  G09G3/3677 ,  G09G2300/0842 ,  G09G2310/0291 ,  G09G2330/021

Abstract: A semiconductor device which has reduced power consumption and includes a selection transistor is provided. A semiconductor device in which the number of wirings and terminals for inputting a power supply potential is reduced and which operates at high speed is provided. A buffer circuit connected to a gate line connected to a gate of the selection transistor has a function of generating a potential higher than a high power supply potential by using the high power supply potential and outputs the potential depending on the selection signal. A bootstrap circuit boosts a high power supply potential that is input to an inverter that is the closest to an output side among a plurality of inverters included in a buffer circuit. Further, by providing a delay circuit in the buffer circuit, the bootstrap circuit starts to boost a potential at the timing later than the input of the selection signal.

Abstract translation: 提供具有降低的功耗并且包括选择晶体管的半导体器件。 提供了一种半导体装置，其中用于输入电源电位的布线和端子的数量减少并且以高速运行。 连接到与选择晶体管的栅极连接的栅极线的缓冲电路具有通过使用高电源电位产生高于高电源电位的电位并根据选择信号输出电位的功能。 自举电路提高输入到包括在缓冲电路中的多个逆变器中最靠近输出侧的逆变器的高电源电位。 此外，通过在缓冲电路中设置延迟电路，自举电路在比选择信号的输入更晚的定时开始提高电位。