Active matrix device
A display device includes an active matrix substrate including a plurality of pixels and a driver unit. The driver unit includes a flexible substrate, a first wiring pattern disposed on the flexible substrate, a demultiplexer circuit or a multiplexer circuit supported by the flexible substrate and connected to the first wiring pattern, and a source driver IC supported by the flexible substrate and connected to the first wiring pattern. The driver unit is connected to a display panel, and a TFT of the plurality of pixels and a TFT of the demultiplexer circuit or the multiplexer circuit have semiconductors different from each other.
1 . An active matrix device comprising:
an active matrix substrate including:
a substrate,
a plurality of pixels disposed on the substrate,
a plurality of source bus lines connected to the plurality of pixels, and
a first substrate terminal disposed on the substrate and connected to each of the plurality of source bus lines; and
a driver unit including:
a flexible substrate,
a first wiring pattern disposed on the flexible substrate,
a demultiplexer circuit or a multiplexer circuit supported by the flexible substrate and connected to the first wiring pattern,
a source driver integrated circuit (IC) disposed on the flexible substrate and connected to the first wiring pattern,
a first output terminal disposed on the flexible substrate and connected to the first wiring pattern, and
a protection circuit disposed on the flexible substrate and connected to the first wiring pattern,
wherein:
the first output terminal is connected to the first substrate terminal,
the plurality of pixels includes a first thin film transistor (TFT),
the demultiplexer circuit, or the multiplexer circuit, includes a second TFT,
the first TFT of the plurality of pixels and the second TFT of the demultiplexer circuit, or the multiplexer circuit, have semiconductors different from each other, and
the protection circuit has a protection element and protects the demultiplexer circuit,
or the multiplexer circuit, from at least one of static electricity and an overvoltage.
2 . The active matrix device according to claim 1 ,
wherein the first TFT of the plurality of pixels has an oxide semiconductor, and
the second TFT of the demultiplexer circuit, or the multiplexer circuit, has polysilicon.
3 . The active matrix device according to claim 1 ,
wherein the first TFT of the plurality of pixels has amorphous silicon, and
the second TFT of the demultiplexer circuit, or the multiplexer circuit, has an oxide semiconductor or polysilicon.
4 . The active matrix device according to claim 1 ,
wherein the first TFT of the plurality of pixels has an amorphous oxide semiconductor, and
the second TFT of the demultiplexer circuit, or the multiplexer circuit, has a crystalline oxide semiconductor.
5 . The active matrix device according to claim 1 ,
wherein the active matrix substrate further includes:
a plurality of gate bus lines connected to the plurality of pixels,
a plurality of connection lines connected to the plurality of gate bus lines and extending parallel to the plurality of source bus lines, and
a second substrate terminal located on the substrate and connected to each of the plurality of connection lines,
the driver unit further includes:
a second wiring pattern disposed on the flexible substrate,
a gate driver disposed on the flexible substrate and connected to the second wiring pattern, and
a second output terminal disposed on the flexible substrate and connected to the second wiring pattern, and
the second substrate terminal is connected to the second output terminal.
6 . The active matrix device according to claim 5 ,
wherein the driver unit further includes another demultiplexer circuit or another multiplexer circuit connected to the second wiring pattern.
7 . The active matrix device according to claim 1 ,
wherein a width of the flexible substrate is larger than 70 mm in a direction in which the first output terminal is disposed.
8 . The active matrix device according to claim 1 ,
wherein the driver unit further includes a sensor supported by the flexible substrate.
9 . The active matrix device according to claim 1 ,
wherein the driver unit further includes a sensor circuit having a matrix-shaped detection unit.
10 . The active matrix device according to claim 1 , further comprising:
a display panel including the active matrix substrate,
wherein the display panel is one selected from a group consisting of a liquid crystal display panel, an organic electroluminescent (EL) display panel, a micro light-emitting diode (LED) display panel, and an electrophoretic display panel, and
the driver unit includes the demultiplexer circuit.
11 . The active matrix device according to claim 1 , further comprising:
a sensor panel including the active matrix substrate,
wherein the driver unit includes the multiplexer circuit.
12 . An active matrix device comprising:
an active matrix substrate including:
a substrate,
a plurality of pixels disposed on the substrate,
a plurality of source bus lines connected to the plurality of pixels,
a first substrate terminal disposed on the substrate and connected to each of the plurality of source bus lines,
a touch panel disposed to overlap the plurality of pixels, and
a second substrate terminal disposed on the substrate and connected to the touch panel; and
a driver unit including:
a flexible substrate,
a first wiring pattern disposed on the flexible substrate,
a demultiplexer circuit or a multiplexer circuit supported by the flexible substrate and connected to the first wiring pattern,
a source driver integrated circuit (IC) disposed on the flexible substrate and connected to the first wiring pattern,
a first output terminal disposed on the flexible substrate and connected to the first wiring pattern,
a second wiring pattern disposed on the flexible substrate,
a touch panel controller IC supported by the flexible substrate and connected to the second wiring pattern, and
a second output terminal disposed on the flexible substrate and connected to the second wiring pattern,
wherein:
the first output terminal is connected to the first substrate terminal,
the plurality of pixels includes a first thin film transistor (TFT),
the demultiplexer circuit, or the multiplexer circuit, includes a second TFT,
the first TFT of the plurality of pixels and the second TFT of the demultiplexer circuit, or the multiplexer circuit, have semiconductors different from each other, and
the second substrate terminal is connected to the second output terminal.
13 . The active matrix device according to claim 12 ,
wherein the driver unit further includes a sensor circuit having a matrix-shaped detection unit.
14 . The active matrix device according to claim 12 , further comprising:
a display panel including the active matrix substrate,
wherein the display panel is one selected from a group consisting of a liquid crystal display panel, an organic electroluminescent (EL) display panel, a micro light-emitting diode (LED) display panel, and an electrophoretic display panel, and
the driver unit includes the demultiplexer circuit.
15 . The active matrix device according to claim 12 , further comprising:
a sensor panel including the active matrix substrate,
wherein the driver unit includes the multiplexer circuit.
16 . An active matrix device comprising:
an active matrix substrate including:
a substrate,
a plurality of pixels disposed on the substrate,
a plurality of source bus lines connected to the plurality of pixels, and
a first substrate terminal disposed on the substrate and connected to each of the plurality of source bus lines; and
a driver unit including:
a flexible substrate,
a first wiring pattern disposed on the flexible substrate,
a demultiplexer circuit or a multiplexer circuit supported by the flexible substrate and connected to the first wiring pattern,
a source driver integrated circuit (IC) disposed on the flexible substrate and connected to the first wiring pattern,
a first output terminal disposed on the flexible substrate and connected to the first wiring pattern, and
a capacitor-resistor (CR) circuit disposed close to the source driver IC on the flexible substrate,
wherein:
the first output terminal is connected to the first substrate terminal,
the plurality of pixels includes a first thin film transistor (TFT),
the demultiplexer circuit, or the multiplexer circuit, includes a second TFT,
the first TFT of the plurality of pixels and the second TFT of the demultiplexer circuit, or the multiplexer circuit, have semiconductors different from each other,
the CR circuit includes a capacitor and a resistor, and
the source driver IC includes a power supply circuit.
17 . The active matrix device according to claim 16 ,
wherein the driver unit further includes a sensor circuit having a matrix-shaped detection unit.
18 . The active matrix device according to claim 16 , further comprising:
a display panel including the active matrix substrate,
wherein the display panel is one selected from a group consisting of a liquid crystal display panel, an organic electroluminescent (EL) display panel, a micro light-emitting diode (LED) display panel, and an electrophoretic display panel, and
the driver unit includes the demultiplexer circuit.
19 . The active matrix device according to claim 16 , further comprising:
a sensor panel including the active matrix substrate,
wherein the driver unit includes the multiplexer circuit.