Display device

• US 10,101,837 B2
• Filed: 06/29/2016
• Issued: 10/16/2018
• Est. Priority Date: 05/29/2012
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Park, SangRyeon, Park, Sangha, Min, Byeongjo
• Primary Examiner(s): Li, Lin
• Application Number:
  US15/197,270
• Publication Number:
  US 20160306480A1
• Time in Patent Office: 839 Days
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133331 Cover glasses
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: G06F 1/16 Constructional details or arrangements
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

Disclosed is a display device capable of decreasing a bezel width, wherein the display device comprises a display panel; a cover glass on an upper surface of the display panel; a housing member for receiving the display panel, and covering lateral and rear sides of the display panel and a lateral side of the cover glass; and a touch sensing film for sealing a gap between the lateral side of the cover glass and the housing member, the touch sensing film adhered to a lower surface of the cover glass.

Claims

1. A display device comprising:

a display panel;

a cover glass on an upper surface of the display panel;

a backlight unit that emits light to the display panel;

a housing member that receives the backlight unit and the display panel, and covers lateral and rear sides of the backlight unit and a lateral side of the cover glass, the housing member including a guide panel supporting a peripheral region of a lower surface of the display panel and defining a receiving position of the backlight unit, and a lateral housing receiving the backlight unit and covering the lateral side of the cover glass and a lateral side of the guide panel; and

a touch sensing film that seals a gap between the lateral side of the cover glass and the lateral housing, the touch sensing film comprising a touch sensor adhered to a lower surface of the cover glass and an extending portion perpendicular to the touch sensor,

wherein the backlight unit includes a reflective sheet received in the housing member and adhered to lower surface of the guide panel,

wherein the extending portion of the touch sensing film is disposed immediately above an edge of the reflective sheet between the lateral housing and the lateral side of the guide panel, and

wherein the touch sensing film further includes a light-leakage prevention member provided in an inner lateral side of the extending portion confronting a lateral side of the display panel and the lateral side of the guide panel.

2. The display device according to claim 1, wherein the cover glass overlaps the extending portion and the gap is disposed immediately above the extending portion of the touch sensing film.

3. The display device according to claim 1,

wherein the touch sensor of the touch sensing film is supported on the upper surface of the display panel, and

wherein the extending portion seals the gap and extends from the each of both lateral sides of the touch sensor to be longer than the cover glass.

4. The display device according to claim 3, wherein the extending portion extends from the each of both lateral sides of the touch sensor, and is bent to cover the lateral side of the display panel, and is adhered to the housing member.

5. The display device according to claim 3, wherein the extending portion extends from the each of both lateral sides of the touch sensor, and is bent to cover the lateral side of the display panel and the lateral side of the guide panel.

6. The display device according to claim 3, wherein the extending portion is adhered to the lateral side of the guide panel confronting an inner lateral side of the lateral housing.

7. The display device according to claim 3,

wherein the touch sensing film includes upper and lower films with sensing electrode lines, the upper and lower films confronting each other and bonded to each other, and

wherein the extending portion extends from at least any one of the upper and low films.

8. The display device according to claim 7, wherein the extending portion extends from each of both lateral sides of the touch sensor to correspond with both long lateral sides of the cover glass.

9. The display device according to claim 3,

wherein the light-leakage prevention member comprises one of a coating layer coated on the inner lateral side of the extending portion, or a tape adhered to the inner lateral side of the extending portion.

10. The display device according to claim 1, wherein the housing member further includes a rear housing that receives the reflective sheet therein.

11. The display device according to claim 10, wherein,

the rear housing comprises a hook-receiving groove disposed in the external lateral side of the rear housing,

the lateral housing comprises a hook projection disposed in an inner lateral side of the lateral housing, and

the hook projection inserts into the hook-receiving groove.

12. The display device according to claim 1, wherein the housing member further includes a housing cover including a rear cover that receives the reflective sheet therein.

13. The display device according to claim 12, wherein the lateral housing is vertically bent from the rear cover, and covers respective lateral sides of the guide panel, the display panel and the cover glass.

14. The display device according to claim 1, further comprising an adhesive member disposed between the peripheral region of the lower surface of the display panel and an upper surface of the guide panel to combine the display panel and the guide panel with each other.

15. The display device according to claim 14, wherein the backlight unit further includes a light-guiding plate disposed on the reflective sheet, and an optical sheet member disposed on the light-guiding plate,

wherein the adhesive member is disposed to a peripheral region of the optical sheet member as well as the upper surface of the guide panel.

16. The display device according to claim 1, wherein the cover glass includes a black coating layer formed in an edge portion overlapping between the lateral side of the display panel and an inner lateral side of the lateral housing.