LIQUID CRYSTAL DISPLAY DEVICE AND APPARATUS WITH DISPLAY FUNCTION

• US 20080117363A1
• Filed: 11/20/2007
• Published: 05/22/2008
• Est. Priority Date: 11/20/2006
• Status: Active Grant

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation), Sanyo Electric System Solutions Co. Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric System Solutions Co. Ltd. (Panasonic Holdings Corporation), Samsung Electronics Co. Ltd.
• Inventors: Ono, Tomoyuki, Yoshida, Shigeru, Fujita, Tsutomu, Sakaida, Yutaka
• Granted Patent: US 7,800,713 B2
• Time in Patent Office: Days
• US Class Current: 349/74
• CPC Class Codes: G02B 30/52 the 3D volume being constructed from a stack or sequence of 2D planes, e.g. depth sampling systems
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
• CPC Class Codes: G02F 2201/46 Fixing elements
• CPC Class Codes: H04N 13/395 with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes

Abstract

Two liquid crystal panels are laid one over the other in a state that each of the liquid crystal panels is oriented in a forward direction. At least one spacer is detachably provided between the two liquid crystal panels. The liquid crystal panels are positioned relative to each other by a plurality of through-holes arrayed in a thickness direction of the spacer by an interval corresponding to the thickness of the spacer, and a projection engageable in one of the through-holes.

Claims

1. A liquid crystal display device, comprising:

a plurality of liquid crystal panels laid one over the other;

at least one or more spacers detachably provided between the liquid crystal panels; and

an engaging portion for determining positions of the liquid crystal panels.

2. The liquid crystal display device according to claim 1, further comprising:

a first cover for covering a part of a first liquid crystal panel disposed at a foremost position of the liquid crystal panels from a front side; and

a second cover for covering a part of a second liquid crystal panel disposed at a rearmost position of the liquid crystal panels from a rear side, wherein

the engaging portion is constituted of a pair of engaging members engageable with each other, the engaging members being provided at the first cover side and the second cover side, respectively.

3. The liquid crystal display device according to claim 2, wherein

the engaging member of the first cover side corresponds to a plurality of bored holes formed in a side wall of the first cover in a direction of a thickness of the spacer by an interval corresponding to the thickness of the spacer, and

the engaging member of the second cover side corresponds to a projection formed on a side wall of the second liquid crystal panel.

4. The liquid crystal display device according to claim 1, wherein

the spacer is formed into a frame shape, and a light emitting device is provided on an inner peripheral portion of the spacer.

5. The liquid crystal display device according to claim 2, wherein

a spare spacer of the at least one or more spacers is provided between the second liquid crystal panel and the second cover.

6. A liquid crystal display device, comprising:

a first liquid crystal panel;

a second liquid crystal panel disposed in forward and rearward directions relative to the first liquid crystal panel;

a spacer for defining a distance between the first liquid crystal panel and the second liquid crystal panel; and

a fixing mechanism for fixing positions of the first liquid crystal panel and the second liquid crystal panel, wherein

the fixing mechanism fixes the first liquid crystal panel and the second liquid crystal panel at the positions corresponding to the distance defined by the spacer.

7. The liquid crystal display device according to claim 6, wherein

the fixing mechanism includes an engaging portion, whose engaging position is variable, for fixing the positions of the first liquid crystal panel and the second liquid crystal panel by engagement, and

an interval of the engaging positions is set depending on the distance defined by the spacer.

8. The liquid crystal display device according to claim 7, wherein

the engaging portion includes a plurality of bored holes arrayed in one direction, and a projection engageable in one of the bored holes, and

an interval of the bored holes is set depending on the distance defined by the spacer.

9. The liquid crystal display device according to claim 7, wherein

the interval of the engaging positions is set depending on the number of the spacers provided between the first liquid crystal panel and the second liquid crystal panel.

10. The liquid crystal display device according to claim 6, wherein

the fixing mechanism fixes the first liquid crystal panel and the second liquid crystal panel at such a position that the first liquid crystal panel and the second liquid crystal panel are lapped one over the other, if the spacer is not disposed between the first liquid crystal panel and the second liquid crystal panel.

11. An apparatus with a display function, comprising:

a liquid crystal display device including

a first liquid crystal panel,

a second liquid crystal panel disposed in forward and rearward directions relative to the first liquid crystal panel,

a spacer for defining a distance between the first liquid crystal panel and the second liquid crystal panel, and

a fixing mechanism for fixing positions of the first liquid crystal panel and the second liquid crystal panel, the fixing mechanism fixing the first liquid crystal panel and the second liquid crystal panel at the positions corresponding to the distance defined by the spacer; and

a circuit section for controlling driving of the first liquid crystal panel and the second liquid crystal panel.