US 2010/0060601 A1Published application

Liquid crystal display device

AssigneeHitachi Displays, Ltd.

InventorEiji OOHIRA

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Abstract

A liquid crystal display device having a touch panel and a front window which can enhance reliability thereof and facilitates repair thereof is provided. The touch panel and the front window are mounted on a liquid crystal display device using a thermoplastic adhesive material. Electronic parts are arranged on a lower side of a touch-panel-use flexible printed circuit board, and electronic parts are arranged on a lower side of a main flexible printed circuit board. The respective electronic parts are covered with the front window in a plan view. A light emitting diode is mounted on the main flexible printed circuit board, and faces a light guide plate in a resin mold. Due to such a constitution, an external shape of the liquid crystal display device can be made small as a whole, and relatively expensive light emitting diodes can be reproduced and reused by repair.

Claims6

Dependent claims

A liquid crystal display device comprising:

a liquid crystal display panel and a backlight which are accommodated in a resin mold;
a touch panel which is adhered to the liquid crystal display panel;
and
a front window which is adhered to the touch panel, wherein
a main flexible printed circuit board is connected to the liquid crystal display panel, a touch-panel-use flexible printed circuit board is connected to the touch panel,
electronic parts arranged on the touch-panel-use flexible printed circuit board are arranged on a side opposite to the front window, and electronic parts arranged on the main flexible printed circuit board are arranged on a side opposite to the front window,
the main flexible printed circuit board is folded back to a back surface of the resin mold, a light emitting diode is arranged on a portion of the main flexible printed circuit board which is folded back to the back surface of the resin mold, and the light emitting diode is accommodated in the resin mold and forms a portion of the backlight, and
the front window covers the electronic parts arranged on the main flexible printed circuit board and the electronic parts arranged on the touch-panel-use flexible printed circuit board as viewed in a plan view.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/553,223Filed 3 Sep 2009
Priority: JP 2008-2286965 Sep 2008
Published: 11 Mar 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H05K 1/189
Structurally associated with non-printed electric components: characterised by the use of flexible or folded printed circuits
G02F 1/133308
Constructional arrangements; Manufacturing methods: support structures for LCD panels, e.g. frames or bezels
G02F 1/13338
Constructional arrangements; Manufacturing methods: input devices, e.g. touch panels
G02F 1/13452
Conductors connecting electrodes to cell terminals: conductors connecting driver circuitry and terminals of panels