Liquid crystal display device with touch panel
View Patent ↗A liquid crystal display device is provided in which a touch panel and a liquid crystal display panel are placed under a front window. A touch-panel flexible wiring substrate is connected to the touch panel, and a main flexible wiring substrate is connected to the liquid crystal display panel. The main flexible wiring substrate includes a touch-panel control IC and a touch-panel electronic component group to control the touch panel. The touch-panel flexible wiring substrate includes only lines. In this configuration, there is only one flexible wiring substrate, or the main flexible wiring substrate, on which the electronic components are mounted. As a result, the production cost of the liquid crystal display device as a whole can be reduced.
1. A display device comprising:
a display panel, and
a touch panel attached to the display panel;
wherein a main flexible wiring substrate is connected to the display panel,
wherein a touch-panel flexible wiring substrate is connected to the touch panel, said touch-panel flexible wiring substrate being an independent component from the touch panel,
wherein a terminal portion of the touch-panel flexible wiring substrate is directly connected to a connecting portion of the main flexible wiring substrate,
wherein the display panel includes a display panel driver IC,
wherein the main flexible wiring substrate includes a display panel electronic component group,
wherein the main flexible wiring substrate further includes a touch-panel control IC and a touch-panel electronic component group to drive the touch panel,
wherein no electronic components, including the touch-panel control IC and the touch-panel electronic group to drive the touch-panel, are mounted on the touch-panel flexible wiring substrate, wherein, in a plan view, the touch-panel flexible wiring substrate and the main flexible wiring substrate overlap,
wherein the terminal portion of the touch-panel flexible wiring substrate is located between the touch-panel electronic component group and the display panel electronic component group,
wherein a width of the terminal portion of the touch-panel flexible wiring substrate is narrower than a distance between the touch-panel electronic component group and the display panel electronic component group,
wherein a width of connecting portion of the touch-panel flexible wiring substrate is wider than the distance between the touch-panel electronic component group and the display panel electronic component group.
2. The display device according to claim 1 , wherein the touch panel is of a capacitance type and the display device is configured for mobile electronic devices.
3. The display device according to claim 1 , the touch-panel flexible wiring substrate includes only wires.
4. A display device comprising:
a display panel, and
a touch panel attached to the display panel;
wherein a main flexible wiring substrate is connected to the display panel,
wherein a touch-panel flexible wiring substrate is connected to the touch panel, said touch-panel flexible wiring substrate being an independent component from the touch panel,
wherein a terminal portion of the touch-panel flexible wiring substrate is directly connected to a connecting portion of the main flexible wiring substrate,
wherein the display panel includes a display panel driver IC and a touch panel control IC,
wherein the main flexible wiring substrate includes a display panel electronic component group and a touch panel electronic component group,
wherein no electronic components, including the touch-panel control IC and the touch-panel electronic group to drive the touch-panel, are mounted on the touch-panel flexible wiring substrate, wherein, in a plan view, the touch-panel flexible wiring substrate and the main flexible wiring substrate overlap,
wherein a width of connecting portion of the touch-panel flexible wiring substrate is wider than the distance between the touch-panel electronic component group and the display panel electronic component group.
5. The display device according to claim 4 , wherein the touch panel is of a capacitance type and the display device is configured for mobile electronic devices.
6. The display device according to claim 4 , the touch-panel flexible wiring substrate includes only wires.