Mirror display and mirror display unit

• US 10,254,455 B2
• Filed: 06/03/2015
• Issued: 04/09/2019
• Est. Priority Date: 06/05/2014
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Sakai, Akira, Hasegawa, Masahiro, Hakoi, Hiroyuki, Minoura, Kiyoshi
• Primary Examiner(s): Chang, Charles S
• Application Number:
  US15/314,545
• Publication Number:
  US 20170199311A1
• Time in Patent Office: 1,406 Days
• Field of Search: 349 11
• CPC Class Codes: G02B 1/118 having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
• CPC Class Codes: G02B 27/0018 with means for preventing ghost images anti-reflection coatings G02B1/11
• CPC Class Codes: G02B 5/3025 Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state G02B5/3008, G02B5/3016 take precedence
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/133536 Reflective polarizers G02F1/13362 takes precedence
• CPC Class Codes: G02F 1/133562 on the viewer side
• CPC Class Codes: G09F 19/16 involving the use of mirrors
• CPC Class Codes: G09F 9/35 being liquid crystals G09F9/302 takes precedence; liquid crystal materials C09K19/00; liquid crystal panels comprising a number of electrodes in a single cell per se G02F1/13

Abstract

The present invention provides a mirror display that enables simultaneous perception of a mirror image and an image with suppressed uncomfortable feeling. The mirror display of the present invention includes a half mirror plate including a half mirror layer, and a display device. The display device is disposed on the back surface side of the half mirror plate. The distance between a display surface of the display device and a display surface of the half mirror plate is not smaller than 100 mm. The half mirror layer preferably includes a reflective polarizer.

Claims

1. A mirror display unit comprising:

a mirror display including a half mirror plate that includes a half mirror layer, and a display device; and

a guiding member, wherein

the display device is on a back surface side of the half mirror plate,

a distance between a display surface of the display device and a display surface of the half mirror plate is not less than 100 mm,

the guiding member is on a viewer side of the mirror display, and

the guiding member includes a seat.

2. The mirror display unit according to claim 1, further comprising an antireflection film,

wherein the antireflection film is bonded to at least one of a viewer-side surface of the display device and a back-surface-side surface of the half mirror plate.

3. The mirror display unit according to claim 2, wherein the antireflection film includes, on a surface thereof, an antireflection structure with multiple protrusions disposed at a pitch not greater than a visible light wavelength.

4. The mirror display unit according to claim 1, further comprising a light-shielding material,

wherein the light-shielding material has a hollow shape with apertures disposed on a viewer side and a back surface side, and connects the display device and the half mirror plate.

5. The mirror display unit according to claim 1, wherein the display device includes a display region larger than the half mirror plate when viewed in a plan view from a viewer side.

6. The mirror display unit according to claim 1, wherein the half mirror layer includes a reflective polarizer.

7. The mirror display unit according to claim 1, wherein the display device is a liquid crystal display device.

8. The mirror display unit according to claim 1, wherein the distance between the display surface of the display device and the display surface of the half mirror plate and a distance between the display surface of the half mirror plate and the guiding member are substantially equal to each other.

9. The mirror display unit according to claim 8, further comprising a positioning mechanism,

wherein the positioning mechanism adjusts the distance between the display surface of the display device and the display surface of the half mirror plate according to the distance between the display surface of the half mirror plate and the guiding member.

10. A mirror display unit comprising:

a mirror display including a half mirror plate that includes a half mirror layer, and a display device; and

a length measurement sensor, wherein

the display device is on a back surface side of the half mirror plate,

a distance between a display surface of the display device and a display surface of the half mirror plate is not less than 100 mm,

the half mirror layer includes a reflective polarizer,

the display device includes a viewer-side absorptive polarizer and a back-surface-side absorptive polarizer,

a transmission axis of the viewer-side absorptive polarizer and a transmission axis of the reflective polarizer are parallel to each other,

the length measurement sensor measures a distance between the display surface of the half mirror plate and a viewer, and

the distance between the display surface of the display device and the display surface of the half mirror plate and the distance between the display surface of the half mirror plate and the viewer are substantially equal to each other.

11. The mirror display unit according to claim 10, further comprising a positioning mechanism,

wherein the positioning mechanism adjusts the distance between the display surface of the display device and the display surface of the half mirror plate according to the distance between the display surface of the half mirror plate and the viewer.

12. The mirror display unit according to claim 10, further comprising an antireflection film,

wherein the antireflection film is bonded to at least one of a viewer-side surface of the display device and a back-surface-side surface of the half mirror plate.

13. The mirror display unit according to claim 12, wherein the antireflection film includes, on a surface thereof, an antireflection structure including multiple protrusions disposed at a pitch not greater than a visible light wavelength.

14. The mirror display unit according to claim 10, further comprising a light-shielding material,

wherein the light-shielding material has a hollow shape including apertures disposed on a viewer side and a back surface side, and connects the display device and the half mirror plate.

15. The mirror display unit according to claim 10, wherein the display device includes a display region larger than the half mirror plate when viewed in a plan view from a viewer side.

16. The mirror display unit according to claim 10, wherein the display device is a liquid crystal display device.