Matsushita Electric Industrial Co., Ltd.

Fuminori Tanemura

Osamu Sarai

Yoshito Date

Hirofumi Nakagawa

Miki Fujino

Jun Suzuki

Keiji Tanaka

A level shift circuit having a latch function includes a precharging PMOS transistor MPwhich is turned on in a precharge period to interrupt a through current of an input stage, an NMOS transistor MNwhich inputs data and performs discharging in a data input period, and a transistor MPfor holding data after level shifting. Thus, each of the transistors can have a minimum configuration. Since the level shift circuit has a latch function, it is possible to omit a circuit for latching input data, thereby reducing a circuit area.

Level shift circuit

A signal line driving circuit includes an output section out(where N is a natural number) for supplying an image-forming signal for red, green or blue to a sub-pixel of a display section, a voltage supply line Sconnected to the output section out, and a shorting line for electrically shorting output sections of the same color with each other during a predetermined period. By shorting output sections of the same color with each other, the charge stored in a panel-side load can be effectively redistributed to another panel-side load, thereby realizing a power conserving effect.

Display device driving circuit and display device

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Takatsuki, Japan

Fuminori Tanemura