Liquid crystal display device
View Patent ↗The present invention aims at the miniaturization and the reduction of thickness of a liquid crystal display device. In a liquid crystal display device which includes: a liquid crystal display panel; a backlight which is arranged on a back-surface side of the liquid crystal display panel; and a flexible printed wiring board which has one end thereof connected to a terminal portion of the liquid crystal display panel, wherein the backlight includes a frame-like mold and a light source, the flexible printed wiring board is folded outside a frame of the frame-like mold and has a portion thereof arranged on a back-surface side of the frame-like mold, the light source is housed in the inside of the frame of the frame-like mold; and the light source is mounted on a surface which opposedly faces the liquid crystal display panel in a state that the flexible printed wiring board is folded out of surfaces of the flexible printed wiring board in the vicinity of a bent portion of the flexible printed wiring board, and the flexible printed wiring board has a cutout therein in a periphery of the light source.
1. A liquid crystal display device comprising:
a liquid crystal display panel;
a backlight which is arranged on a back-surface side of the liquid crystal display panel; and
a flexible printed wiring board which has one end thereof connected to a terminal portion of the liquid crystal display panel, wherein
the backlight includes a frame-like mold,
the flexible printed wiring board is folded and has a portion thereof arranged on a back-surface side of the frame-like mold,
the flexible printed wiring board includes an electronic part,
the frame-like mold includes a first short-side side wall, a second short-side side wall, a first long-side side wall and a second long-side side wall,
the first short-side side wall and the second short-side side wall are opposed to each other,
the first long-side side wall and the second long-side side wall are opposed to each other and are connected to the first short-side side wall and the second short-side side wall,
the flexible printed wiring board is folded at the first short-side side wall, and
the first long-side side wall of the frame-like mold includes a recessed portion which opens on the back-surface side of the frame-like mold and into which the electronic part is inserted.
2. A liquid crystal display device according to claim 1 , wherein the second long-side side wall of the frame-like mold includes a recessed portion which opens on the back-surface side of the frame-like mold and into which the electronic part is inserted.
3. A liquid crystal display device according to claim 1 , wherein a plurality of recessed portions are formed in the first long-side side wall at a predetermined interval.
4. A liquid crystal display device according to claim 1 , wherein a length of the recessed portion is 10 mm or less when measured in the extending direction of the first long-side side wall.
5. A liquid crystal display device according to claim 1 , wherein a length of the recessed portion is 5 mm or less when measured in the extending direction of the first long-side side wall.
6. A liquid crystal display device according to claim 1 , wherein
the backlight includes a light guide body,
the first long-side side wall and the second long-side side wall of the frame-like mold, assuming that the recessed portion is not provided, include first to third portions which change frame widths thereof in a step-like manner, the second portion exhibits a larger frame width of the frame-like mold than the first portion, and the third portion exhibits a larger frame width of the frame-like mold than the second portion,
the first portion accommodates the liquid crystal display panel therein,
the third portion accommodates the light guide body therein, and
the recessed portion into which the electronic part is inserted is formed in
the third portion.
7. A liquid crystal display device according to claim 1 , wherein the back light includes a reflection sheet and the reflection sheet is fixed to the back-surface side of the frame-like mold.
8. A liquid crystal display device according to claim 1 , wherein the flexible printed wiring board is adhered to the back-surface side of the frame-like mold using a pressure-sensitive adhesive double-coated tape.
9. A liquid crystal display device according to claim 7 , wherein the flexible printed wiring board is adhered to the frame-like mold at a region outside the reflection sheet in a plan view.
10. A liquid crystal display device according to claim 7 , wherein the reflection sheet includes a cutout portion which exposes a back-surface side of the mold in a portion of a region which is covered with the flexible printed wiring board, and
the flexible printed wiring board is adhered to the frame-like mold in the cutout portion.