Display panel and display device
First Claim
1. A display device comprising:
- a display panel having first pixels for outputting image light to be directed in a first viewing direction and second pixels for outputting image light to be directed in a second viewing direction;
a first drive circuit for driving the first pixels;
a second drive circuit for driving the second pixels; and
an optical separator arranged on a front face of the display panel for separating the image lights outputted from the first and second pixels so as to direct the image lights in the first and second viewing directions, respectively, wherein at least one of the first and second drive circuits includes;
a shift register for shifting a start pulse in synchronism with a clock signal to generate a sampling pulse;
a sampling circuit for sampling an image signal in synchronism with the sampling pulse; and
a switch for controlling, according to a switch signal, whether or not to feed the clock signal to the shift register or whether or not to feed the start pulse to the shift register, and wherein the first and second pixels are driven by use of an output signal of the sampling circuit.
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Abstract
In a display device, at least one of a first drive circuit that feeds source signals to first pixels to be viewed from a first viewing direction and a second drive circuit that feeds source signals to second pixels to be viewed from a second viewing direction includes a shift register that generates a sampling pulse by shifting a start pulse in synchronism with a clock signal, a sampling circuit that samples an image signal according to the sampling pulse, and a switch that controls according to a switch signal whether or not to feed the clock signal to the shift register or whether or not to feed the start pulse to the shift register. The first and second pixels are driven by the use of the output signal of the sampling circuit. With this configuration, a plurality of viewers can be presented with different images simultaneously with minimum waste of electric power.
34 Citations
18 Claims
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1. A display device comprising:
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a display panel having first pixels for outputting image light to be directed in a first viewing direction and second pixels for outputting image light to be directed in a second viewing direction;
a first drive circuit for driving the first pixels;
a second drive circuit for driving the second pixels; and
an optical separator arranged on a front face of the display panel for separating the image lights outputted from the first and second pixels so as to direct the image lights in the first and second viewing directions, respectively, wherein at least one of the first and second drive circuits includes;
a shift register for shifting a start pulse in synchronism with a clock signal to generate a sampling pulse;
a sampling circuit for sampling an image signal in synchronism with the sampling pulse; and
a switch for controlling, according to a switch signal, whether or not to feed the clock signal to the shift register or whether or not to feed the start pulse to the shift register, and wherein the first and second pixels are driven by use of an output signal of the sampling circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A display device comprising:
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an active-matrix display panel including;
a plurality of source lines;
a plurality of gate lines that cross the source lines;
first pixels that output image light to be directed in a first viewing direction; and
second pixels that output image light to be directed in a second viewing direction;
the first and second pixels both having active elements of which sources are connected to the source lines, of which gates are connected to the gate lines, and of which drains are connected to pixel segment electrodes;
a source line drive circuit for feeding an image signal to the source lines;
a gate line drive circuit for feeding a scanning signal to the gate lines; and
an optical separator arranged on a front face of the display panel for separating the image lights outputted from the first and second pixels to direct the image lights in the first and second viewing directions, respectively, wherein the display panel includes a plurality of first pixel columns each including a plurality of first pixels and a plurality of second pixel columns each including a plurality of second pixels and is so configured that, in a direction of the columns, along each of which first or second pixels are arrayed contiguously, gate lines are provided so that each gate line is connected commonly to all the pixels in one column and that, in a direction of rows, along each of which first and second pixels are arrayed alternately, source lines are provided so that each source line is connected commonly to all the pixels in one row. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A display panel comprising:
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a plurality of first pixels for displaying a first image that can be viewed from one of a leftward and a rightward directions with the display panel seen from in front; and
a plurality of second pixels for displaying a second image that can be viewed from the other of the leftward and rightward directions, wherein, of the first and second pixels, at least either the first or second pixels are so arranged as to have varying areas in a left/right direction. - View Dependent Claims (16, 17, 18)
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Specification