Display panel drive device
AssigneeFuji Electric Systems Co., Ltd.
InventorsHideto Kobayashi, Gen Tada, Yoshihiro Shigeta, Hiroshi Shimabukuro
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Abstract
A display panel drive device of reduced area occupied by circuit elements. The display panel drive device includes an output stage circuit having a low side selector circuit constituted by connecting in series inverters and a buffer circuit, n-channel IGBTs, a Zener diode and resistance respectively connected between the gate and emitter of the IGBT, a buffer circuit, and a high side selector circuit including an inverter. The buffer circuit includes a high side Pch-MOS operated by a logic signal from the high side selector circuit and a low side Nch-MOS operated by a logic signal of the low side selector circuit.
Claims9
A drive device for driving a display panel, comprising:
- an output stage circuit, including an output circuit connected with a scanning electrode of the display panel, and a drive circuit including a selector and shift register for controlling the output circuit,
- wherein said output stage circuit is driven by a logic voltage of a low side power source and a logic voltage of a high side power source.
A drive device for driving a display panel, comprising:
- an output stage circuit, including an output circuit connected with a scanning electrode of the display panel, and a drive circuit including a selector and shift register for controlling the output circuit,
- wherein said output stage circuit is driven by a logic voltage of a low side power source and a logic voltage of a high side power source,
- wherein one of said first and second drive circuits includes a level shifter circuit for sharing one of a high side logic signal and a low side logic signal, and
- wherein said level shifter circuit alternately-turns a high side logic signal ON and OFF at each odd bit or even bit, in synchronization with the clock of the low side logic signal.
Dependencies are inferred from the claim text.