Display device
First Claim
1. A display device comprising:
- a plurality of gate signal lines disposed in a predetermined direction on a substrate;
a plurality of drain signal lines disposed in a direction different from the predetermined direction;
a plurality of pixel elements which are disposed as a matrix, activated by a scanning signal fed through the gate signal line and provided with an image signal fed through the drain signal line;
a pixel electrode provided within the pixel elements;
a first display circuit which is disposed for the pixel elements and provides the pixel elements with the image signals;
a second display circuit which is disposed for the pixel elements, include a retaining circuit holding the image signal and provides the pixel electrode with an voltage corresponding to the image signal retained by the retaining circuit; and
a circuit selection circuit for selecting one of the first and second display circuit in response to a circuit selection signal disposed for the pixel elements;
wherein the circuit selection signal is supplied to the circuit selection circuit through an electric power line which is used for supplying a power voltage to the retaining circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
Within one pixel element 200, two display circuits corresponding to the analog display mode and the digital display mode are disposed such that they are adjacent to each other. One of these two display circuits can be selected through the circuit selection circuits 40 or 43. Since the high voltage power line 150 of the retaining circuit 110, which is used under the digital display mode, also performs as the signal selection line 88, it is possible to have the high density integration of the pixel element 200. Also, the bias voltage Vsc supplied through the selection storage capacitor line 81 is same as the signal A. Therefore, the storage capacitor line 81 is connected to the drain of the TFT 122 of the signal selection circuit 120 so that the signal line 82 for supplying the signal A can be omitted. Thus, the high-density integration of the pixel element 200 can be achieved.
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Citations
9 Claims
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1. A display device comprising:
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a plurality of gate signal lines disposed in a predetermined direction on a substrate;
a plurality of drain signal lines disposed in a direction different from the predetermined direction;
a plurality of pixel elements which are disposed as a matrix, activated by a scanning signal fed through the gate signal line and provided with an image signal fed through the drain signal line;
a pixel electrode provided within the pixel elements;
a first display circuit which is disposed for the pixel elements and provides the pixel elements with the image signals;
a second display circuit which is disposed for the pixel elements, include a retaining circuit holding the image signal and provides the pixel electrode with an voltage corresponding to the image signal retained by the retaining circuit; and
a circuit selection circuit for selecting one of the first and second display circuit in response to a circuit selection signal disposed for the pixel elements;
wherein the circuit selection signal is supplied to the circuit selection circuit through an electric power line which is used for supplying a power voltage to the retaining circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A display device, comprising:
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a plurality of gate signal lines disposed in a predetermined direction on a substrate;
a plurality of drain signal lines disposed in a direction different from the predetermined direction;
a plurality of pixel elements which are disposed as a matrix, activated by a scanning signal fed through the gate signal line and provided with an image signal fed through the drain signal line;
a first display circuit which has a storage capacitor element for holding an analog image signal fed through the drain signal line in response to a signal fed through the gate signal line and supplies the signal held by the storage capacitor element to a pixel electrode;
a second display circuit which is disposed near the first display circuit, includes a retaining circuit holding a digital image signal fed through the drain signal line in response to the signal fed through the gate signal line and a signal selection circuit for selecting one of the signals fed through a first and second signal lines for supplying said one of the signals to the pixel electrode; and
,a circuit selection circuit for selecting one of the first and second display circuit in response to a circuit selection signal;
wherein one of the first and second signal lines works as a storage capacitor line for biasing an electrode of the storage capacitor element. - View Dependent Claims (9)
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Specification