TOUCH KEYBOARD WITH IMPROVED STRUCTURE

• US 20140262721A1
• Filed: 03/15/2013
• Published: 09/18/2014
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Paragon Technologies Incorporated
• Original Assignee: Paragon Technologies Incorporated
• Inventors: YU, Ching-Feng, HUNG, Pin-Feng
• Granted Patent: US 9,054,710 B2
• Time in Patent Office: Days
• US Class Current: 200/600
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 2217/96038 Inductive touch switches

Abstract

A touch keyboard with an improved structure is disclosed. The touch keyboard includes a keyboard casing and an inductive circuit layer. The keyboard casing has a front surface and a rear surface; the front surface has a keyboard key assembly composed of a plurality of touch keyboard keys. The touch keyboard keys are integrally formed with the keyboard casing and projected from the front surface of the keyboard casing. The inductive circuit layer is formed on the rear surface of the keyboard casing and is used to detect touching and sliding operations from the user. The touch keyboard keys are projected from the front surface of the keyboard casing so as to identify positions of the touch keyboard keys without fixing user'"'"'s eyes on the keyboard and increase touching feeling.

Claims

1. A touch keyboard with an improved structure, comprising:

a keyboard casing having a front surface and a rear surface, the front surface having a keyboard key assembly composed of a plurality of touch keyboard keys, the touch keyboard keys integrally formed with the keyboard casing and projected from the front surface of the keyboard casing;

an inductive circuit layer formed on the rear surface of the keyboard casing;

wherein the touch keyboard keys are projected from the front surface of the keyboard casing so as to identify positions of the touch keyboard keys and increase touching feeling, and the inductive circuit layer is configured to detect touching and sliding operations.

2. The touch keyboard in claim 1, wherein the keyboard casing is made of a hard or soft plastic material.

3. The touch keyboard in claim 2, wherein protrusion height of each touch keyboard key is less than or equal to 0.2 millimeters.

4. The touch keyboard in claim 3, wherein each touch keyboard key has at least one round corner on an edge thereof, each touch keyboard key has a top surface and a pattern layer is formed on the top surface, and the pattern layer is any one of texts, numbers, or symbols.

5. The touch keyboard in claim 4, wherein the inductive circuit layer is a capacitive inductive circuit layer.

6. The touch keyboard in claim 5, wherein thickness of the inductive circuit layer is less than or equal to 0.1 millimeters.

7. The touch keyboard in claim 6, further comprising:

a bottom cover installed at a bottom of the keyboard casing.

8. The touch keyboard in claim 7, further comprising:

a circuit board installed between the keyboard casing and the bottom cover;

wherein the circuit board is electrically connected to the inductive circuit layer to receive induction signals outputted from the inductive circuit layer;

the circuit board has a wired module or a wireless module and the circuit board is electrically connected to an external device via the wired module or the wireless module;

the induction signals are transmitted to the external device via the wired module or the wireless module.

9. A touch keyboard with an improved structure, comprising:

a keyboard casing having a front surface and a rear surface, the front surface having a keyboard key assembly composed of a plurality of touch keyboard key graphs, each touch keyboard key graph having a top surface and a pattern layer is formed and projected on the top surface;

an inductive circuit layer formed on the rear surface of the keyboard casing;

wherein the projected pattern layer is configured to identify positions of the touch keyboard keys and increase touching feeling, and the inductive circuit layer is configured to detect touching and sliding operations.

10. The touch keyboard in claim 9, wherein the keyboard casing is made of a hard or soft plastic material.

11. The touch keyboard in claim 10, wherein protrusion height of each pattern layer is less than or equal to 0.2 millimeters, and the pattern layer is any one of texts, numbers, or symbols.

12. The touch keyboard in claim 11, wherein the inductive circuit layer is a capacitive inductive circuit layer, and thickness of the inductive circuit layer is less than or equal to 0.1 millimeters.

13. The touch keyboard in claim 12, further comprising:

a bottom cover installed at a bottom of the keyboard casing.

14. The touch keyboard in claim 13, further comprising:

a circuit board installed between the keyboard casing and the bottom cover;

wherein the circuit board is electrically connected to the inductive circuit layer to receive induction signals outputted from the inductive circuit layer;

the circuit board has a wired module or a wireless module and the circuit board is electrically connected to an external device via the wired module or the wireless module;

the induction signals are transmitted to the external device via the wired module or the wireless module.

15. A touch keyboard with an improved structure, comprising:

a keyboard casing having a front surface and a rear surface, the front surface having a keyboard key assembly composed of a plurality of touch keyboard key graphs, at least one protruding portion is arranged between any two of the touch keyboard graphs;

an inductive circuit layer formed on the rear surface of the keyboard casing;

wherein the protruding portions are projected from the front surface of the keyboard casing so as to identify distributed positions of the touch keyboard key graphs and increase touching feeling, and the inductive circuit layer is configured to detect touching and sliding operations.

16. The touch keyboard in claim 15, wherein the keyboard casing is made of a hard or soft plastic material.

17. The touch keyboard in claim 16, wherein protrusion height of each protruding portion is less than or equal to 0.2 millimeters.

18. The touch keyboard in claim 17, wherein each touch keyboard key graph has a top surface and a pattern layer is formed on the top surface, and the pattern layer is any one of texts, numbers, or symbols.

19. The touch keyboard in claim 18, wherein the inductive circuit layer is a capacitive inductive circuit layer, and thickness of the inductive circuit layer is less than or equal to 0.1 millimeters.

20. The touch keyboard in claim 19, further comprising:

a bottom cover installed at a bottom of the keyboard casing; and

a circuit board installed between the keyboard casing and the bottom cover;

wherein the circuit board is electrically connected to the inductive circuit layer to receive induction signals outputted from the inductive circuit layer;

the circuit board has a wired module or a wireless module and the circuit board is electrically connected to an external device via the wired module or the wireless module;

the induction signals are transmitted to the external device via the wired module or the wireless module.