Electronic device and display module with sensing antenna

• US 9,839,144 B2
• Filed: 05/02/2014
• Issued: 12/05/2017
• Est. Priority Date: 05/02/2013
• Status: Active Grant

• Current Assignee: AU Optronics Corporation, Nanjing Silergy Micro Technology Co., Ltd.
• Original Assignee: AU Optronics Corporation, Jieng Tai International Electric Corp.
• Inventors: Chuang, Tzu-Yu, Lee, Fang-Ching, Lu, Chi-Hung, Hsieh, Meng-Ying
• Primary Examiner(s): Husar, Stephen F
• Application Number:
  US14/267,977
• Publication Number:
  US 20140328084A1
• Time in Patent Office: 1,313 Days
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H04M 1/0266 for a display module assembly
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 5/0247 Electrical details of casings, e.g. terminals, passages for cables or wiring

Abstract

An electronic device and a display module used therein are provided. The display module includes a display panel, a backlight module and a sensing antenna. The backlight module has a light exit surface and a reflective plate opposite to the light exit surface, and the display panel is stacked on the light exit surface. The sensing antenna is disposed on a surface of the reflective plate opposite to the light exit surface and has a body and two signal connecting terminals connecting the body. The electronic device includes the display module, a system circuit module, and a conductive device. The system circuit module is disposed on a back side of the display module and has a signal connecting parts corresponding to and connecting the signal connecting terminals.

Claims

1. A display module, comprising:

a display panel;

a backlight module having a light exit surface and a reflective plate opposite to the light exit surface, wherein the display panel is stacked on the light exit surface, wherein the reflective plate has a first surface and a second surface is opposite to the first surface, wherein the first surface of the reflective plate is disposed toward and close to the display panel, and the second surface of the reflective plate is disposed toward and far away the display panel; and

at least one sensing antenna disposed below the second surface of the reflective plate, wherein the antenna has a body and two signal connecting terminals connecting the body, and when a sensing device approaches a display surface of the display panel, the sensing antenna senses and transmits or receives data via the display surface of the display panel to the sensing device approaches.

2. The display module of claim 1, further comprising at least one signal connecting circuit module and a rear shell, wherein the signal connecting circuit module provides signal to the display panel, wherein the rear shell covers the second surface of the reflective plate facing away from the light exit surface, wherein the signal connecting circuit module is disposed between the sensing antenna and the rear shell.

3. The display module of claim 1, further comprising a rear shell covering the second surface of the reflective plate facing away from the light exit surface, wherein the rear shell has at least one opening, wherein the opening at least partially exposes the sensing antenna.

4. The display module of claim 1, wherein the display panel includes the display surface having a metal layer, a portion of the display panel overlaps the sensing antenna and has an overlapping area when projecting on a plane, wherein a metal coverage rate of the metal layer in the overlapping area is not more than 90%.

5. The display module of claim 1, further comprising:

a system circuit module disposed on a back side of the display module, wherein the system circuit module has two signal connecting parts;

two conductive transfer devices disposed between the system circuit module and the sensing antenna, wherein the signal connecting parts are respectively connect the corresponding signal connecting terminals through the conductive transfer devices, wherein the display module, the system circuit module and the conductive transfer devices form an electronic device.

6. The display module of claim 1, wherein the reflective plate does not include metallic film or alloy film.

7. The display module of claim 1, wherein the backlight module further comprising a light guide plate, wherein the first surface of the reflective plate is disposed toward and close to the light guide plate and the second surface of the reflective plate is disposed toward and far away the light guide plate.

8. The display module of claim 1, wherein the sensing antenna consists of near field communication and/or inductive charging antenna.

9. The display module of claim 1, wherein a vertical distance between the display panel and the sensing antenna is greater than a vertical distance between the reflective plate and the display panel.

10. A display module, comprising:

a display panel having a display surface and a bottom surface opposite to the display surface;

at least one sensing antenna disposed on the bottom surface, wherein the sensing antenna includes a body and two signal connecting terminals respectively connected to two terminals of the body;

wherein a portion of the display panel overlaps the sensing antenna and has an overlapping area when projecting on a plane, wherein a metal coverage rate of a metal layer in the overlapping area is not more than 90%;

wherein the sensing antenna consists of near field communication and/or inductive charging antenna and when a sensing device approaches the display surface of the display panel, the sensing antenna senses and transmits or receives data via the display surface to the sensing device approaches.

11. The display module of claim 10, further comprising a backlight module disposed between the bottom surface and the sensing antenna.

12. The display module of claim 10, wherein the metal projection coverage rate is not more than 70%.

13. The display module of claim 10, wherein the sensing antenna includes a conductive glue layer and is in a projection plane of the display panel, wherein the conductive glue layer includes an organic polymer as a main component and a conductive component.

14. The display module of claim 10, wherein the sensing antenna is disposed inside a carrier or between the carrier and the display panel, wherein the carrier is disposed under the display panel, wherein the display panel is stacked on the carrier.

15. The display module of claim 14, wherein the carrier includes a side wall and a supporting flange extending from the side wall to a center of the display module, the supporting flange has a top surface supporting the display panel, a bottom surface of the side wall aligning to or protruding out of a bottom surface of the supporting flange.

16. The display module of claim 15, wherein the sensing antenna is disposed between the carrier and the display panel, wherein the sensing antenna has a signal connecting terminal exposed on the bottom surface of the side wall.

17. The display module of claim 15, wherein the sensing antenna is disposed inside the carrier and has a signal connecting terminal exposed on the bottom surface of the side wall.

18. The display module of claim 16, further comprising a casing disposed under the carrier for accommodating the carrier and the display panel, wherein at least one opening is formed at a position of the casing corresponding to the signal connecting terminal.

19. The display module of claim 17, further comprising a casing disposed under the carrier for accommodating the carrier and the display panel, wherein at least one opening is formed at a position of the casing corresponding to the signal connecting terminal.

20. The display module of claim 10, wherein the reflective plate does not include metallic film or alloy film.

21. The display module of claim 11, wherein a vertical distance between the display panel and the sensing antenna is greater than a vertical distance between the backlight module and the display panel.

22. The display module of claim 10, wherein the display panel has the metal layer, wherein the metal layer includes a signal transfer device or line.

23. The display module of claim 22, wherein the signal transfer device or line includes at least one of a scanning line, a data line, a capacitor line, a connecting wire, a contact pad, a transistor, a power wire, a reference potential wire, a reflective electrode, a repairing wire, and a capacitor electrode.

24. A display module, comprising:

a display panel;

a signal connecting circuit module connected to one end of the display panel, wherein the signal connecting circuit module has a plurality of driving signal wires for transferring signals to the display panel; and

at least one sensing antenna disposed on the signal connecting circuit module;

wherein the sensing antenna includes a body and two signal connecting terminals respectively connecting the body, wherein the sensing antenna is electrically insulated from the driving signal wires, and the signal connecting circuit module includes a first circuit board and a second circuit board.

25. The display module of claim 24, wherein the first circuit board is a portion of the signal connecting circuit module, and the second circuit board is another portion of the signal connecting circuit module, and the first circuit board and the second circuit board are formed the signal connecting circuit module.

26. The display module of claim 24, wherein the second circuit board is attached on the first circuit board, wherein at least one portion of the second circuit board is in a projection plane of the first circuit board.

27. The display module of claim 24, wherein a gap exists between same ends of the first circuit board and the second circuit board for separating the first circuit board from the second circuit board.

28. The display module of claim 24, further comprising a backlight module stacked with the display panel, wherein the sensing antenna is folded backward to the back side of the backlight module along with a portion of the signal connecting circuit module board.

29. The display module of claim 24, wherein the signal connecting circuit module includes a system terminal connector, the driving signal wire and the sensing antenna share the system terminal connector to transfer signal.

30. The display module of claim 24, wherein the display panel includes a first substrate, a second substrate, and a display medium layer disposed between the first substrate and the second substrate, wherein the signal connecting circuit module includes a first face and a second face opposite to the first face, the first face of the signal connecting circuit module faces the inner surface of the first substrate, wherein the sensing antenna is disposed on the second face of the signal connecting circuit module.

31. The display module of claim 24, wherein the signals transferred by the plurality of driving signal wires are adapted for the display panel to display images.

32. A display module, comprising:

a display panel including a first substrate, a second substrate, a display medium layer disposed between the first substrate and the second substrate, wherein a display area and a peripheral circuit area are defined on the display panel, the display area includes a plurality of sub-pixels, wherein each sub-pixel includes at least one signal wire, at least one pixel electrode, and at least one switching unit electrically coupled to the pixel electrode and the signal wire respectively, wherein the signal wire, the pixel electrode, and the switching unit are disposed on the first substrate;

a plurality of contacting pads disposed on the peripheral circuit area and on the first substrate; and

at least one sensing antenna disposed on at least one portion of the peripheral circuit area and on the second substrate, wherein the sensing antenna includes a body and two connected terminals respectively connect the body.

33. The display module of claim 32, wherein the contacting pads includes a first group electrically coupled to the sub-pixels and a second group having two contacting pads and not electrically coupled to the sub-pixels;

the display panel further including;

two conductive transfer devices disposed between the first substrate and the second substrate and are in the peripheral circuit area, wherein the connecting terminals connect the contacting pads of the second group via the conductive transfer devices.

34. The display module of claim 32, further comprising a signal connecting circuit board having a plurality of conducting wires, wherein the signal connecting circuit board is disposed on the first substrate, wherein the conducting wires connect the contact pads.

35. The display module of claim 33, further comprising a signal connecting circuit board having a plurality of conducting wires, wherein the signal connecting circuit board is disposed on the first substrate, wherein the conducting wires connect the contact pads.

36. The display module of claim 32, further includes a backlight module stacked on the display panel.

37. A display module, comprising:

a display panel having a display surface and a bottom surface opposite to the display surface;

at least one sensing antenna disposed below the bottom surface of the display panel, wherein the sensing antenna includes a body and two signal connecting terminals respectively connected to two terminals of the body; and

a module has a surface and another surface is opposite to the surface, and the surface of the module is disposed toward and close to the bottom surface of the display panel, and the another surface of the module is disposed toward and far away the bottom surface of the display panel, and the sensing antenna is disposed below the module.

38. The display module of claim 37, wherein when a sensing device approaches the display surface of the display panel, the sensing antenna senses and transmits or receives data via the display surface of the display panel to the sensing device approaches.

39. The display module of claim 37, wherein a vertical distance between the display panel and the sensing antenna is greater than a vertical distance between the module and the display panel.

40. The display module of claim 37, wherein the module has at least one of a backlight module or an electrical module.

41. The display module of claim 40, wherein the backlight module having a light exit surface and a reflective plate opposite to the light exit surface, wherein the display panel is stacked on the light exit surface, wherein the reflective plate has a first surface and a second surface is opposite to the first surface, wherein the first surface of the reflective plate is disposed toward and close to the display panel, and the second surface of the reflective plate is disposed toward and far away the display panel.

42. The display module of claim 41, wherein a vertical distance between the display panel and the sensing antenna is greater than a vertical distance between the reflective plate and the display panel.

43. The display module of claim 41, wherein the backlight module further comprising a light guide plate, wherein the first surface of the reflective plate is disposed toward and close to the light guide plate and the second surface of the reflective plate is disposed toward and far away the light guide plate.

44. The display module of claim 37, further comprising a casing is adapted to accommodate the display panel and the sensing antenna.

45. The display module of claim 37, wherein the sensing antenna consists of near field communication and/or inductive charging antenna.

46. A display module, comprising:

a display panel having a display surface and a bottom surface opposite to the display surface;

at least one sensing antenna disposed below the bottom surface of the display panel, wherein the sensing antenna includes a body and two signal connecting terminals respectively connected to two terminals of the body; and

a signal connecting circuit module connected to one end of the display panel, wherein the signal connecting circuit module has a plurality of driving signal wires for transferring signals to the display panel, and the sensing antenna disposed on the signal connecting circuit module, wherein the signal connecting circuit module includes a first circuit board and a second circuit board.

47. The display module of claim 46, wherein when a sensing device approaches the display surface of the display panel, the sensing antenna senses and transmits or receives data via the display surface of the display panel to the sensing device approaches.

48. The display module of claim 46, wherein the first circuit board is a portion of the signal connecting circuit module, and the second circuit board is another portion of the signal connecting circuit module, and the first circuit board and the second circuit board are formed the signal connecting circuit module.

49. The display module of claim 46, wherein the second circuit board is attached on the first circuit board, wherein at least one portion of the second circuit board is in a projection plane of the first circuit board.

50. The display module of claim 46, wherein a gap exists between same ends of the first circuit board and the second circuit board is adapted to separate the first circuit board from the second circuit board.