Driver of liquid crystal panel, liquid crystal device, and electronic equipment

A driver for driving a liquid crystal panel that includes a pair of substrates, a liquid crystal sandwiched between the substrates, a plurality of signal lines which are arranged in a first given direction on a substrate and to which an image signal is supplied, a plurality of scanning lines which are arranged in correspondence with intersections a second direction and to said first direction on the substrate and to which a scan signal is supplied sequentially, and a plurality of pixels arranged in the form of a matrix on the liquid crystal side of the substrate and driven with said image signal and said scan signal supplied by said plurality of signal lines and said plurality of scanning lines, respectively, said driver comprising:

• an image signal supply unit including a first-direction shift register having a plurality of stages, and supplying the image signal sequentially to said plurality of signal lines in the first direction according to a transfer signal sequentially generated by said first-direction shift register;
• and
• a scan signal supply unit including a second-direction shift register having a plurality of stages, and supplying the scan signal sequentially to said plurality of scanning lines in the second direction according to a transfer signal sequentially generated by said second-direction shift register, and being provided with:
• a detecting circuit for detecting a terminal of the scan in a part-image display area and a voltage application device that applies a given voltage to pixels constituting non-image display areas according to the result of the detecting circuit,
• at least one of the first and second-direction shift registers being provided with:
• a logic circuit having a first input terminal which inputs an output of an mth flip flop, a second terminal which inputs a transfer interrupt signal, the transfer interrupt signal being an NTSC signal, and an output terminal which outputs to an m+1th flip flop, the logic circuit operating such that when the transfer interrupt signal is input, logic is set so that the transfer of the transfer signal to an m+1th flip flop is interrupted.

A driver for driving a liquid crystal panel that includes a pair of substrates, a liquid crystal sandwiched between said substrates, a plurality of signal lines which are arranged in a first direction on the substrate and to which an image signal is supplied, a plurality of scanning lines which are arranged in correspondence with intersections a second direction and to said first direction on the substrate and to which a scan signal is supplied sequentially, and a plurality of pixels arranged in the form of a matrix on the liquid crystal side of the substrate and driven with said image signal and said scanning signal supplied by said plurality of signal lines and said plurality of scanning lines, respectively, said driver comprising:

• an image signal supply unit including a first-direction shift register having a plurality of stages, and supplying the image signal sequentially to said plurality of signal lines in the first direction according to a transfer signal sequentially generated by said first-direction shift register;
• and
• a scan signal supply unit including a second-direction shift register having a plurality of stages, and supplying the scan signal sequentially to said plurality of scanning lines in the second direction according to a transfer signal sequentially generated by said second-direction shift register, and being provided with:
• a detecting circuit for detecting a terminal of the scan in a part-image display area and a voltage application device that applies a given voltage to pixels constituting non-image display areas according to the result of the detecting circuit,
• at least one of the first and second-direction shift registers being provided with:
• a first flip flop having an input terminal which inputs a first transfer signal, and
• a first logic circuit having a first input terminal which inputs an output of an nth flip flop, a second terminal which inputs a second transfer signal, and an output terminal which outputs to an n+1th flip flop, the first logic circuit operating such that when the first transfer signal is input to the first flip flop and the second transfer signal is not input, a transfer operation begins from the first flip flop, and when the second transfer signal is input and the first transfer signal is not input to the first flip flop, logic is set so that a transfer operation begins from the n+1th flip flop, and
• the first logic circuit having a second logic circuit that has a first input terminal which inputs an output of an mth flip flop, a second terminal which inputs a transfer interrupt signal, the transfer interrupt signal being an NTSC signal, and an output terminal which outputs to an m+1th flip flop, the second logic circuit operating such that when the transfer interrupt signal is input, logic is set so that transfer of a transfer signal to the m+1th flip flop is interrupted.

A driver for driving a liquid crystal panel that includes a pair of substrates, a liquid crystal sandwiched between the substrates, a plurality of signal lines which are arranged in a first direction on the substrate and to which an image signal is supplied, a plurality of scanning lines which are arranged in correspondence with intersections a second direction and said first direction on the substrate and to which a scan signal is supplied sequentially, and a plurality of pixels arranges in the form of a matrix on the liquid crystal side of the substrate and driven with said image signal and said scanning signal supplied by said plurality of signal lines and said plurality of scanning lines, respectively, and driver comprising:

• an image signal supply unit including a first-direction shift register having a plurality of stages, and supplying the image signal sequentially to said plurality of signal lines in the first direction according to a transfer signal sequentially generated by said first-direction shift register;
• and
• a scan signal supply unit including a second-direction shift register having a plurality of stages, and supplying the scan signal sequentially to said plurality of scanning lines in the second direction according to the transfer signal sequentially generated by the second-direction shift register, and being provided with:
• a detecting circuit for detecting a terminal of the scan in a part-image display area and a voltage application device that applies a given voltage to pixels constituting non-image display areas according to the result of the detecting circuit.

A driver for driving a liquid crystal panel that includes a pair of substrates, a liquid crystal sandwiched between the substrates, a plurality of signal lines which are arranged in a first direction on the substrate and to which an image signal is supplied, a plurality of scanning lines which are arranged in correspondence with intersections a second direction and said first direction on the substrate and to which a scan signal is supplied sequentially, and a plurality of pixels arranged in the form of a matrix on the liquid crystal side of the substrate and driven with said image signal and said scanning signal supplied by said plurality of signal lines and said plurality of scanning lines, respectively, said driver comprising:

• an image signal supply unit including a first-direction shift register having a plurality of stages, and supplying the image signal sequentially to said plurality of signal lines in the first direction according to a transfer signal sequentially generated by said first-direction shift register;
• and
• a scan signal supply unit including a second-direction shift register having a plurality of stages, and supplying the scan signal sequentially to said plurality of scanning lines in the second direction according to the transfer signal sequentially generated by the second-direction shift register, and being provided with:
• a detecting circuit for detecting a terminal of the scan in a part-image display area and a voltage application device that applies a given voltage to pixels constituting non-image display areas according to the result of the detecting circuit,
• at least one of the first and second-direction shift registers being provided with:
• a voltage application device that applies a given voltage to pixels constituting a non-image display area according to an NTSC signal when the non-image display areas form in a periphery of an image display area.