Display device

• US 8,319,729 B2
• Filed: 12/15/2008
• Issued: 11/27/2012
• Est. Priority Date: 04/23/2008
• Status: Expired due to Fees

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Choi, Jong Seong, Jang, Hyung Uk, Lee, Sang Rae, Bae, Sang Hyuck, Yu, Byung Chun
• Primary Examiner(s): PARDO, THUY N
• Application Number:
  US12/335,364
• Publication Number:
  US 20090267889A1
• Time in Patent Office: 1,443 Days
• Field of Search: 345/173, 345/158, 345/175, 345/102, 345/111, 345/161, 349/58, 361/679.43, 348/374, 455/75.1
• US Class Current: 345/158
• CPC Class Codes: G02F 1/13312 Circuits comprising photodetectors for purposes other than feedback
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/13332 Front frames
• CPC Class Codes: G02F 1/133325 Assembling processes
• CPC Class Codes: G02F 1/133328 Segmented frames
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 2201/46 Fixing elements
• CPC Class Codes: G02F 2201/54 Arrangements for reducing warping-twist
• CPC Class Codes: G02F 2203/11 involving infrared radiation
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen

Abstract

A display device capable of simplifying the structure and improving the reliability is disclosed. The display device includes an LCD module having a top case formed of metal, a glass substrate arranged on the LCD module, an infrared ray emitting module arranged to face three side surfaces of the LCD module and having a first magnet for first fixing to the top case, and a pair of infrared ray detection units arranged at corner ends of a side surface of the LCD module where the infrared ray emitting module is not arranged and having a second magnet for the first fixing to the top case.

Claims

1. A display device comprising:

a liquid crystal display (LCD) module having a top case formed of metal;

a plurality of infrared ray emitting modules arranged to face three outside surfaces of the LCD module,

wherein each of the plurality of infrared ray emitting modules has at least one magnet for affixing the module to the top case; and

a plurality of infrared ray detection units arranged at corner ends of outside surfaces of the LCD module,

wherein each of the plurality of infrared ray detection units has at least one magnet for affixing the module to the top case, and

wherein the plurality of infrared ray emitting modules and the plurality of infrared ray detection units have a digitizer function for detecting a physical and direct contact with the display device.

2. The display device of claim 1, wherein each of the plurality of infrared ray emitting modules comprises:

an infrared ray lamp configured to emit an infrared ray;

an infrared ray lamp accommodation unit for accommodating the infrared ray lamp within an infrared ray emitting module; and

an infrared ray emitting module cover configured to encompass the infrared ray lamp accommodation unit.

3. The display device of claim 2, wherein the at least one magnet of each of the plurality of infrared ray emitting modules is disposed at a side surface of the infrared ray lamp accommodation unit facing an outside surface of the top case.

4. The display device of claim 2, wherein the infrared ray emitting module cover is bent to overlap an upper surface of the top case.

5. The display device of claim 2, wherein each of the plurality of infrared ray emitting modules further comprises a plurality of screw holes that are formed at a side surface of the infrared ray emitting module cover to affix the corresponding infrared ray emitting module cover to an outside surface of the top case via a plurality of screws.

6. The display device of claim 2, wherein a side surface of the infrared ray emitting module cover and a side surface of an infrared ray detection unit cover overlap each other.

7. The display device of claim 2, wherein the infrared ray lamp accommodation unit has an indentation to insert the magnets.

8. The display device of claim 1, wherein each of the plurality of infrared ray detection units comprises:

an infrared ray camera configured to detect an infrared ray;

a support unit for supporting the infrared ray camera; and

an infrared ray detection unit cover bent to contact an edge of the support unit.

9. The display device of claim 8, wherein at least one magnet is disposed at a side surface of the support unit facing an outside surface of the top case.

10. The display device of claim 8, wherein a screw hole for coupling of the top case is formed at a side surface of the infrared ray detection unit cover.

11. The display device of claim 8, wherein a side surface of an infrared ray emitting module cover and a side surface of the infrared ray detection unit cover overlap each other.

12. The display device of claim 8, wherein the support unit has an indentation to insert the magnets.

13. The display device of claim 8, wherein the digitizer function comprises detecting a touch position on the display device using a dispersion of an infrared ray.

14. The display device of claim 1, wherein each of the infrared ray detection units is arranged, such that the corresponding infrared ray emitting module is completely enclosed within the display device.