US 9,436,340 B2Granted

Liquid crystal display device with touch panel

AssigneesJapan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.

InventorEiji Oohira

Life of this patent

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Abstract

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.

Claims6

Dependent claims

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.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/073,879Filed 18 Mar 2016 · continuation
Priority: JP 2009-14412617 Jun 2009
Published: US 2016/0216805 A128 Jul 2016
Granted: 6 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G06F 3/0445
By capacitive means: using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
G06F 1/1643
Details related to the display arrangement, including those related to the mounting of the display in the housing: the display being associated to…
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
G06F
Computing and data processing

Family

Application12/814,583Parent of this continuation · filed 14 Jun 2010
US 2016/0216805 A1Pre-grant publication · published 28 Jul 2016
US 9,323,289 B2Parent of this continuation
US 2010/0321318 A1Published application
US 9,436,340 B2This patent

From the US filing history. Foreign family members aren’t listed.

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