Semiconductor display device and electronic equipment
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorKyouichi Mukao
Life of this patent
Estimating the term…
Abstract
A semiconductor device capable of displaying images having many tones with a high precision and with a high resolution is provided. The semiconductor device is characterized in that the order of m divided video signals changes before they are inputted to buffer circuits, and, after the m divided video signals are outputted from the buffer circuits, the order of the m divided video signals returns to the original order.
Claims21
A semiconductor display device comprising m buffer circuits and a source signal line driving circuit, wherein:
- said m buffer circuits correspond to m divided video signals as parallel data, respectively;
- said m buffer circuits corresponding to said m divided video signals, respectively, replace one another every time when a predetermined time period elapses;
- said m divided video signals inputted to said m buffer circuits are outputted from said m buffer circuits to be inputted to said source signal line driving circuit;
- and
- said m divided video signals inputted to said source signal line driving circuit are sampled to be inputted to given m source signal lines corresponding to the m divided video signals, respectively.
A semiconductor display device comprising a dividing circuit, a first replacing circuit, a second replacing circuit, m buffer circuits, and a source signal line driving circuit, wherein:
- m divided video signals formed by serial-parallel conversion of a video signal are outputted from said dividing circuit;
- said m divided video signals outputted from said dividing circuit are inputted to said first replacing circuit;
- said m divided video signals inputted to said first replacing circuit are inputted to said corresponding m buffer circuits, respectively;
- said m divided video signals inputted to said m buffer circuits are outputted from said m buffer circuits to be inputted to said second replacing circuit;
- the m divided video signals inputted to said second replacing circuit are inputted to given m divided video signal lines corresponding to said m divided video signals, respectively;
- said m divided video signals inputted to said m divided video signal lines are inputted to said source signal line driving circuit, to be sampled, and inputted to fixed m source signal lines corresponding to said m divided video signals, respectively;
- and
- said m buffer circuits corresponding to said m divided video signals, respectively, replace one another every time when a predetermined time period elapses.
A semiconductor display device comprising a dividing circuit, a first replacing circuit, m buffer circuits, and a source signal line driving circuit, wherein:
- said source signal line driving circuit has a second replacing circuit;
- m divided video signals formed by serial-parallel conversion of a video signal are outputted from said dividing circuit;
- said m divided video signals outputted from said dividing circuit are inputted to said first replacing circuit;
- said m divided video signals inputted to said first replacing circuit are inputted to said corresponding m buffer circuits, respectively;
- said m divided video signals inputted to said m buffer circuits are outputted from said m buffer circuits to be inputted to said second replacing circuit;
- said m divided video signals inputted to said second replacing circuit are sampled to be inputted to given m source signal lines corresponding to said m divided video signals, respectively;
- and
- said m buffer circuits corresponding to said m divided video signals replace one another every time when a predetermined time period elapses.
A semiconductor display device comprising a multiplexer circuit, a 1 D/A conversion circuits, and a dividing circuits, wherein:
- said 1 D/A conversion circuits correspond to 1 digital distribution signals outputted from said multiplexer circuit, respectively;
- said 1 D/A conversion circuits corresponding to the 1 digital distribution signals, respectively, replace one another every time when a predetermined time period elapses;
- and
- said 1 digital distribution signals inputted to said 1 D/A conversion circuits are converted to 1 analog distribution signals and to be inputted to said corresponding given 1 dividing circuits, respectively.
Dependencies are inferred from the claim text.