Visual display device with display cell

• US 20030174260A1
• Filed: 01/17/2003
• Published: 09/18/2003
• Est. Priority Date: 07/21/2000
• Status: Abandoned Application

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: Capdepuy, Pascal, Labrousse, Gilles
• Application Number:
  US10/333,251
• Publication Number:
  US 20030174260A1
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: B60Q 3/10 for dashboards
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13

Abstract

The invention relates to display devices comprising one or more display cells.

It is a display device comprising, as a minimum, a display cell (1), a frame (8) designed to receive the cell (1), and a system (11, 12, 13, 15, 16) for mechanically holding the cell (1) with respect to the frame (8), the mechanical holding system (11, 12, 13, 15, 16) comprising several stops (11, 12, 13) arranged in such a way as to define without maintaining a unique position of the cell (1) with respect to the frame (8) in a mean plane (XY) of the cell (1) and at least one block (15, 16) arranged in such a way as to be able, in combination with the stops (11, 12, 13), to maintain said position.

The invention is applied for example to display devices comprising one or more liquid crystal screens.

Claims

1. A display device comprising, as a minimum, a display cell (1), a frame (8) designed to receive the cell (1), and a system (11, 12, 13, 15, 16) for mechanically holding the cell (1) with respect to the frame (8), the device being characterized in that the mechanical holding system (11, 12, 13, 15, 16) comprises several stops (11, 12, 13) arranged in such a way as to define without maintaining a unique position of the cell (1) with respect to the frame (8) in a mean plane (XY) of the cell (1) and at least one block (15, 16) arranged in such a way as to be able, in combination with the stops (11, 12, 13), to maintain said position.

2. The display device as claimed in claim 1, characterized in that the display cell (1) is essentially flat and in that the direction (Z) of the thickness of the cell (1) is orthogonal to the mean plane (XY) of the cell (1).

3. The display device as claimed in claim 2, characterized in that the display cell (1) is a liquid crystal screen.

4. The display device as claimed in any one of the preceding claims, characterized in that there are three stops (11, 12, 13) and in that the projections of the stops (11, 12, 13) in the mean plane (XY) of the cell (1) are not aligned.

5. The display device as claimed in any one of the preceding claims, characterized in that the stops (11, 12, 13) all belong to the frame (8).

6. The display device as claimed in any one of the preceding claims, characterized in that each stop (11, 12, 13) is provided with a stop protector (14) made of semi-rigid material.

7. The display device as claimed in claim 6, characterized in that the semi-rigid material is plastic.

8. The display device as claimed in any one of the preceding claims, characterized in that the tightening axis (s) of each block (15, 16) is not parallel to the axis (b) of constraint of the cell (1) by said block (15, 16).

9. The display device as claimed in claim 8, characterized in that the tightening axis (s) of each block (15, 16) is more or less orthogonal to the axis (b) of constraint of the cell (1) by said block (15, 16).

10. The display device according to any one of the preceding claims, characterized in that the material of the block (15, 16) is plastic.

11. The display device as claimed in any one of the preceding claims, characterized in that the cell (1) is of essentially rectangular shape in its mean plane (XY), in that there are three stops (11, 12, 13), in that two (11, 12) of the stops are in contact with a first side (101) of the rectangle, the two stops (11, 12) being situated in the vicinity of two corners (105, 106) of the rectangle, and in that the third stop (13) is in contact with a second side (102) of the rectangle that is not parallel to the first side (101), the third stop (13) being situated in the vicinity of a third corner (107) of the rectangle.

12. The display device as claimed in claim 11, characterized in that the first side (101) is a long side of the rectangle while the second side (102) is a short side of the rectangle.

13. The display device as claimed in either of claims 11 and 12, characterized in that there are at least two of the blocks (15, 16) and in that two (15, 16) of the blocks are in contact with the third (103) and fourth (104) sides, respectively, of the rectangle, the two blocks (15, 16) being situated in the vicinity of the fourth corner (108) of the rectangle.

14. The display device as claimed in either of claims 11 and 12, characterized in that there is at least one of the blocks (15, 16) and in that one of the blocks is situated in the vicinity of the fourth corner (108) of the rectangle.

15. An aircraft instrument panel characterized in that it comprises at least one display device as claimed in any one of the preceding claims.