Display device

• US 20050259082A1
• Filed: 08/13/2003
• Published: 11/24/2005
• Est. Priority Date: 08/13/2002
• Status: Active Grant

• Current Assignee: Fujitsu Siemens Computers GmbH (Fujitsu Limited)
• Original Assignee: Fujitsu Siemens Computers GmbH (Fujitsu Limited)
• Inventors: Potsch, Edmund
• Granted Patent: US 7,388,577 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02B 26/0808 by means of one or more diffracting elements
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133504 Diffusing, scattering, diffracting elements associated to illuminating devices G02F1/133606
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

A display apparatus having a display layer (2) and a touch-sensitive layer (3) running parallel thereto. An antireflection lattice is provided which is arranged on the touch-sensitive layer (3), the lattice elements being able to move toward one another or having a touch sensitivity which is independent of other lattice elements.

Claims

1. A display apparatus comprising:

a display layer (2) and

a touch-sensitive layer (3) running parallel thereto,

wherein

that side of the touch-sensitive layer (3) which is remote from the display layer (2) has an antireflection lattice (4) comprising lattice elements which can move toward one another.

2. The display apparatus as claimed in claim 1,

wherein

the lattice elements (5) are of strip-like design, the lattice elements (5) being able to move toward one another at nodes (13) of the lattice.

3. The display apparatus as claimed in claim 1,

wherein

the lattice elements (7) are of bristle-like design.

4. The display apparatus as claimed in claim 1,

wherein

the lattice elements (6) are of stud-like design.

5. The display apparatus as claimed in claim 1,

wherein

the lattice spacing is matched to the pixel spacing on the display layer (2) such that the ratio of the lattice spacing to the pixel spacing is whole-numbered.

6. The display apparatus as claimed in claim 1,

wherein

the angle (9) between the lattice elements (5, 6, 7) and the touch-sensitive layer (3) is adjustable.

7. The display apparatus as claimed in claim 6,

wherein

means for automatically adjusting the angle (9) on the basis of the angle of the incident ambient light (18).

8. The display apparatus as claimed in claim 1,

wherein

the lattice elements (5;

6;

7) are comprised of a light-absorbent material.

9. The display apparatus as claimed in claim 1,

wherein

the antireflection lattice (4) is removable.

10. A display apparatus comprising:

a display layer (2) and

a touch-sensitive layer (3) running parallel thereto,

wherein

that surface of the touch-sensitive layer (3) which is remote from the display layer (2) has a lattice-like surface texturing, the lattice spacing being matched to the pixel spacing on the display layer (2) such that the ratio of the lattice spacing to the pixel spacing is whole-numbered.

11. A display apparatus comprising:

a display layer (2) and

a touch-sensitive layer (3) running parallel thereto,

wherein

the touch-sensitive layer (3) contains lattice elements (17), the lattice spacing being matched to the pixel spacing on the display layer (2) such that the ratio of the lattice spacing to the pixel spacing is whole-numbered.

12. The display apparatus as claimed in claim 11,

wherein

the lattice elements (17) are made of liquid crystals contained in the touch-sensitive layer (3) have liquid crystals.

13. The display apparatus as claimed in claim 11,

wherein

the lattice elements (17) are made of an electrochromic material.

14. The display apparatus as claimed in claim 12, further comprising:

means for automatically adjusting the optical properties of the lattice elements (17) on the basis of the ambient light conditions.

15. A display apparatus comprising:

a display layer (2) and

a touch-sensitive layer (3) running parallel thereto,

wherein

the touch-sensitive layer (3) comprises strip-like lattice elements (15) arranged in lattice form, and touch sensors integrated into the nodes (13) of the lattice.

16. The display apparatus as claimed in claim 15,

wherein

the lattice elements (15) contain electrical conductors (14) which run parallel to the display layer (2) and do not touch at the nodes (13) of the lattice, and the lattice elements (15) are comprised of an elastic material, and means for evaluating the spacing of the conductors (14) at nodes (13) of the lattice.

17. The display apparatus as claimed in claim 15,

wherein

the touch sensors are capacitive sensor elements.