LIQUID CRYSTAL DISPLAY DEVICE

• US 20160147107A1
• Filed: 06/03/2015
• Published: 05/26/2016
• Est. Priority Date: 11/24/2014
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Cho, Inchul, Kim, YongSoo, Jung, Daeyoung, Kim, Daeduk, Kim, EuiJung, Lim, GilYoung, Goo, Jakyung
• Granted Patent: US 10,101,603 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/133325 Assembling processes
• CPC Class Codes: G02F 2201/46 Fixing elements

Abstract

A liquid crystal display device comprises a liquid crystal display panel, a back light unit that emits light to the display panel, a middle frame that supports the display panel and is disposed on a side of the back light unit, and a cover bottom that contacts a lower surface of the back light unit. The middle frame includes a contacting portion which makes contact with a portion of an upper surface of the cover bottom, and a protruding portion which adjoins a side surface of the cover bottom and protrudes from the contacting portion toward a bottom surface of the cover bottom.

Claims

1. A liquid crystal display device comprising:

a liquid crystal display panel;

a back light unit that emits light to the display panel;

a middle frame that supports the display panel and is disposed on a side of the back light unit; and

a cover bottom that contacts a lower surface of the back light unit,

wherein the middle frame includes a contacting portion which makes contact with a portion of an upper surface of the cover bottom, and a protruding portion which adjoins a side surface of the cover bottom and protrudes from the contacting portion toward a bottom surface of the cover bottom.

2. The liquid crystal display device of claim 1, wherein:

the contacting portion of the middle frame comprises a groove with inner serrations;

a hole through the cover bottom is configured to align with the groove in the contacting portion of the middle frame; and

a screw-shaped combining member is configured to affix the middle frame to the cover bottom by penetrating the groove of the contacting portion and the hole in the cover bottom.

3. The liquid crystal display device of claim 1, wherein the middle frame comprises an additional protruding portion that protrudes from the contacting portion toward the liquid crystal display panel and away from the cover bottom.

4. The liquid crystal display device of claim 1, wherein the middle frame and a corner of the cover bottom are spatially separated by a margin space that is provided in a vicinity of a portion of the middle frame where the contacting portion and the protruding portion of the middle frame intersect.

5. The liquid crystal display device of claim 1, wherein the upper and bottom surfaces of the cover bottom are formed of skin layers and the cover bottom includes a core layer placed between the skin layers.

6. The liquid crystal display device of claim 1, further comprising:

a first combining member attached to the cover bottom, the first combining member including;

a cylinder protruding portion that protrudes from the cover bottom toward a direction opposite to the display panel and includes an internal groove with inner serrations, and

a cylinder contacting portion formed between the cylinder protruding portion and the bottom surface of the cover bottom, the cylinder contacting portion contacting an outer side of the bottom surface of the cover bottom and having a cross sectional area larger than a cross sectional area of the cylinder protruding portion; and

a second combining member attached to the cover bottom, the second combining member including;

a screw portion that penetrates a hole in the bottom surface of the cover bottom, is inserted into the internal groove of the cylinder protruding portion, and is screw-combined with the inner serrations disposed on the internal groove, and

a head portion which has a cross sectional area larger than that of the screw portion and makes contact with an inner side of the bottom surface of the cover bottom.

7. The liquid crystal display device of claim 6, wherein the second combining member penetrates a groove formed through a substantial thickness of the cover bottom, the groove being axially aligned with the hole in the bottom surface of the cover bottom.

8. The liquid crystal display device of claim 6, further comprising:

a display support bracket that receives the cylinder protruding portion of the first combining member, wherein the cylinder protruding portion of the first combining member, when received by the display support bracket, mounts the cover bottom of the liquid crystal display device onto the display support bracket.

9. The liquid crystal display device of claim 1, further comprising:

at least one optical sheet disposed between the liquid crystal display panel and the back light unit.

10. The liquid crystal display device of claim 9, wherein the middle frame further includes a hang portion that protrudes toward the display panel and affixes the middle frame to the optical sheet by penetrating through a hole formed near an outer periphery of the optical sheet.

11. The liquid crystal display device of claim 10, further comprising:

a sheet fixing pad disposed between the liquid crystal display panel and the optical sheet, the sheet fixing pad located above a region of the optical sheet that is punctuated by the hole, the sheet fixing pad covering the hole.