Display Device Having Reduced Thickness and Improved Luminance

• US 20120069261A1
• Filed: 06/14/2011
• Published: 03/22/2012
• Est. Priority Date: 09/17/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Won-Il, Jang, Nam-Jin, Lee, Joo-Young
• Granted Patent: US 8,692,954 B2
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02F 1/133606 including a specially adapted diffusing, scattering or light controlling members
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 2201/465 Snap -fit
• CPC Class Codes: G02F 2201/54 Arrangements for reducing warping-twist

Abstract

A display device comprises: a display panel for displaying an image; a plurality of optical sheets disposed under the display panel; a light guiding plate disposed under the optical sheets, and including a light guiding protrusion protruding toward a side direction from a light guiding corner; a support frame for supporting the display panel, and including a protrusion cover in the frame corner to cover the light guiding protrusion; and a receiving member for supporting the support frame and the light guiding plate. The height of an upper surface of the protrusion cover is preferably no less than the height of an upper surface of the optical sheets. Thus, the display device prevents the problem in molding of the protrusion cover of the support frame, covering the light guiding protrusion of the light guiding plate, due to a slim thickness of the protrusion cover by increasing the thickness of the protrusion cover. Accordingly, a small-sized thin film light guiding plate can be applied to the display device so that luminance of the display device can be improved, and the thickness of the display device can be reduced.

Claims

1. A display device, comprising:

a display panel for displaying an image;

a plurality of optical sheets disposed under the display panel;

a light guiding plate disposed under the optical sheets, and including a light guiding protrusion protruding toward a side direction from a light guiding corner;

a support frame for supporting the display panel, and including a protrusion cover in a frame corner for covering the light guiding protrusion; and

a receiving member for supporting the support frame and the light guiding plate;

wherein a height of an upper surface of the protrusion cover is not less than a height of an upper surface of the optical sheets.

2. The display device of claim 1, wherein the protrusion cover protrudes from an upper side of the support frame disposed in the frame corner.

3. The display device of claim 2, wherein a width of the protrusion cover is in a range of 0.4 mm to 2 mm, and a thickness of the protrusion cover is in a range of 0.15 mm to 2 mm.

4. The display device of claim 1, wherein the protrusion cover protrudes from the frame corner of the support frame, and the protrusion cover and the support frame form a light guiding protrusion receiving groove.

5. The display device of claim 1, wherein a sheet corner of the optical sheets comprises a protrusion cover receiving groove which is engaged with the protrusion cover.

6. The display device of claim 5, wherein the light guiding protrusion of the light guiding plate is disposed in a corner of the light guiding plate, and is received in a light guiding protrusion receiving groove.

7. The display device of claim 1, wherein a frame side of the support frame comprises a sheet support for supporting a sheet side of the optical sheets.

8. The display device of claim 1, wherein a side surface of the light guiding plate is disposed in a light guiding side of the light guiding plate and faces a sheet support of the support frame.

9. The display device of claim 1, wherein the light guiding plate is smaller in size than the optical sheets.

10. The display device of claim 9, further comprising:

a reflecting sheet disposed under the light guiding plate; and

a receiving member for receiving the support frame, the light guiding plate, and the reflecting sheet.

11. The display device of claim 1, further comprising:

a reflecting sheet disposed under the light guiding plate; and

a receiving member for receiving the support frame, the light guiding plate, and the reflecting sheet.