Display room mirror

• US 9,482,889 B2
• Filed: 03/20/2013
• Issued: 11/01/2016
• Est. Priority Date: 03/23/2012
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Roh, Geon Ho, Choe, Hae Min, Jun, Sung Gon
• Primary Examiner(s): Duong, Thoi
• Application Number:
  US13/847,824
• Publication Number:
  US 20130250189A1
• Time in Patent Office: 1,322 Days
• Field of Search: 362/494, 362/487, 362/135, 362/300, 362/492, 362/516, 362/540, 362/545, 362/549, 362/612, 362/615, 362/620, 362/631, 362/609, 362/97.1, 362/97.2, 362/339, 362/800, 340/815.4, 340/525, 340/435, 359/267, 359/265, 359/838, 359/839, 359/872, 359/245, 359/272, 359/263, 359/630, 359/833, 359/841, 359/883, 257/79, 345/7, 349/11, 349/61, 349/62, 349/64, 349/65, 349/67, 349/138, 349/150, 361/760
• US Class Current: 1/1
• CPC Class Codes: B60R 1/088 using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
• CPC Class Codes: B60R 1/12 Mirror assemblies combined with other articles, e.g. clocks
• CPC Class Codes: B60R 2001/1253 with cameras, video cameras or video screens
• CPC Class Codes: G02F 1/1313 specially adapted for a particular application
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133605 including specially adapted reflectors
• CPC Class Codes: G02F 1/133606 including a specially adapted diffusing, scattering or light controlling members

Abstract

Provided is a display room mirror which is configured such that a display module, which includes: one or more light emitting units formed on a printed circuit board; a resin layer is formed on the light emitting units so that the light emitting units are embedded in the resin layer; a liquid crystal panel formed on the resin layer, is disposed on a rear surface the room mirror, thereby reducing an entire thickness and improving a degree of freedom in design.

Claims

1. A display room mirror comprising a display module, wherein the display module comprises:

a printed circuit board;

a reflection sheet formed on an upper surface of the printed circuit board;

one or more light emitting units formed on the reflection sheet;

a plurality of reflection patterns formed on the reflection sheet;

a resin layer formed on the reflection sheet;

a diffusion sheet formed on the resin layer;

an optical pattern formed on a lower surface of the diffusion sheet;

a liquid crystal display panel formed on the diffusion sheet; and

a room mirror disposed on the liquid crystal display panel and configured to transmit and reflect light;

wherein a pattern density of the plurality of reflection patterns increases as a distance from the light emitting units increases,

wherein the optical pattern functions to partially shield and diffuse light emitted from the light emitting units,

wherein the light emitting units, the plurality of reflection patterns, and the optical pattern are embedded in the resin layer;

wherein the optical pattern comprises a diffusion pattern and a light shielding pattern;

wherein the diffusion pattern, the light shielding pattern, and the light emitting units are buried in the resin layer;

wherein the diffusion pattern comprises;

a first diffusion part covered by the light shielding pattern; and

a second diffusion part covered by the resin layer;

wherein the light shielding comprises;

a first shielding part disposed on a lower surface of the first diffusion part; and

a second shielding part disposed on the lower surface of the diffusion sheet; and

wherein a side surface of a reflection pattern of the plurality of reflection patterns is directly contacted with a light emitting unit of the one or more light emitting units.

2. The display room mirror of claim 1, further comprising an ECM module formed on a rear surface of the room mirror.

3. The display room mirror of claim 2, wherein the ECM module comprises:

a first transparent substrate and a second transparent substrate which are opposed to each other at a predetermined distance;

a transparent electrode and a conductive reflection layer which are formed on an opposed surface of the first and second transparent substrates, respectively; and

an electrochromic layer interposed between the transparent electrode and the conductive reflection layer.

4. The display room mirror of claim 3, wherein the electrochromic layer comprises:

an electrolytic layer interposed between the transparent electrode and the conductive reflection layer; and

an electrochromic coating layer formed on one surface or both surfaces of the electrolytic layer.

5. The display room mirror of claim 1, wherein the room mirror is formed of a half mirror.

6. The display room mirror of claim 1, wherein the printed circuit board is composed of a flexible printed circuit board.

7. The display room mirror of claim 1, wherein the light emitting units are composed of side view type light emitting diodes.

8. The display room mirror of claim 1, wherein the reflection patterns are formed with a reflective ink including any one of TiO₂, Al₂O₃, CaCO₃, BsSO₄, Silicon and PS.

9. The display room mirror of claim 1, wherein the resin layer is formed to include beads which increases a reflection amount of light.

10. The display room mirror of claim 9, wherein the beads are composed of any one selected from silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al₂O₃, and acryl.

11. The display room mirror of claim 1, wherein the optical pattern is formed on the lower surface of the diffusion sheet, and wherein the display room mirror is configured such that light emitted from the light emitting units strikes the lower surface of the diffusion sheet.

12. The display room mirror of claim 1, wherein the diffusion pattern formed using a light shielding ink including one or more materials selected from TiO₂, CaCO₃, BaSO₄, Al₂O₃ and Silicon overlaps with the light shielding pattern formed using a light shielding ink including Al or a mixture of Al and TiO₂.

13. The display room mirror of claim 12, wherein the diffusion pattern is formed in a structure in which the diffusion pattern is printed on at least one surface of an upper surface and a lower surface of the light shielding pattern.

14. The display room mirror of claim 1, wherein as the optical pattern is moved far from the light emitting units, a pattern density thereof is reduced.

15. The display room mirror of claim 1, wherein the display module is configured such that the liquid crystal display panel is disposed to be opposed to the room mirror.

16. The display room mirror of claim 1, wherein the resin layer is composed of an ultraviolet curing resin including an oligomer.

17. The display room mirror of claim 16, wherein the oligomer is composed of any one material selected from urethane acrylate, epoxy acrylate, polyester acrylate and acrylic acrylate.