IP Library Granted Patent US 8,736,546
Granted Patent B2
US 8,736,546 · App. 13/213,509 · Granted May 27, 2014

Display device

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Quick Facts
Patent No.
US 8,736,546
App. No.
13/213,509
Granted
May 27, 2014
Kind
B2
Abstract

A display device includes a display panel configured to display an image in an upward direction and a reflective panel on the display panel, the reflective panel configured to selectively transmit or reflect light with respect to an area corresponding to the image.

Claims (20)

1. A display device for displaying an image to a user, the display device comprising:

a display panel including a plurality of pixels for forming the image and a non-pixel area between neighboring pixel areas among a plurality of pixel areas, the display panel being configured to display the image in an upward direction from an upper surface that faces the user; and

a reflective panel on the upper surface of the display panel, the reflective panel configured to selectively transmit or reflect light with respect to an area corresponding to the image, the reflective panel including:

a first transparent electrode corresponding to a pixel area;

a neighboring electrode that neighbors the first transparent electrode and corresponds to a non-pixel area;

a second transparent electrode corresponding to the pixel area, the second transparent electrode being arranged opposite to the first transparent electrode;

a space interposed between the first transparent electrode and the second transparent electrode; and

charged particles in the space, the charged particles reflecting light,

wherein when an electric field is a lied to the first transparent electrode and the second transparent electrode, the charged particles are located in a second transparent electrode side corresponding to the first transparent electrode and the second transparent electrode and light incident to the reflective panel passes through a portion of the reflective panel and is received by the non-pixel area of the display panel.

2. The display device as claimed in claim 1 , wherein the display panel includes a phase delay plate and a polarizing plate that are sequentially layered in the upward direction on a path through which the image is displayed.

3. The display device as claimed in claim 1 , wherein, when an electric field is applied to the neighboring electrode and the second transparent electrode, the charged particles are located in a neighboring electrode side corresponding to the neighboring electrode and the second transparent electrode.

4. The display device as claimed in claim 1 , wherein the display panel further includes an organic light emitting element that emits light corresponding to a pixel area to form the image.

5. The display device as claimed in claim 1 , wherein, when an electric field is applied to the first transparent electrode and the second transparent electrode:

the charged particles overlap the pixel area of the display panel, and

the charged particles do not overlap the non-pixel area of the display panel.

6. The display device as claimed in claim 1 , wherein:

the first transparent electrode and the neighboring electrode are on a first substrate and are spaced apart from each other horizontally along the first substrate,

the second transparent electrode is on a second substrate opposite the first substrate, and

the second substrate is between the user and the first substrate.

7. The display device as claimed in claim 1 , wherein the second transparent electrode extends continuously over the first transparent electrode and the neighboring electrode.

Assignments (2)
MERGER Recorded Oct 16, 2012
From: SAMSUNG MOBILE DISPLAY CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 029227/0419 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 19, 2011
From: OH, IL-SOO; LEE, CHANG-HO; KO, HEE-JOO; SONG, HYUNG-JUN; CHO, SE-JIN; YUN, JIN-YOUNG; LEE, BO-RA; SONG, YOUNG-WOO; LEE, JONG-HYUK; KIM, SUNG-CHUL
To: SAMSUNG MOBILE DISPLAY CO., LTD.
Reel/Frame 026778/0585 →