DISPLAY DEVICE AND DISPLAY METHOD

• US 20170343804A1
• Filed: 05/25/2017
• Published: 11/30/2017
• Est. Priority Date: 05/27/2016
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: CHOI, Byeong-Hwa, LEE, Seung-Bae
• Granted Patent: US 10,394,024 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0141 characterised by the informative content of the display
• CPC Class Codes: G02B 27/01 Head-up displays
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06F 3/0304 Detection arrangements using opto-electronic means constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/08 Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 2370/18 Use of optical transmission of display information
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A display device is disclosed. The display device may include a display panel, a light blocking member, a distance sensing member, and a controlling member. The display panel may include a pixel region and a transmission region. The light blocking member may be disposed on a rear surface of the display panel and have an adjustable light transmittance. The distance sensing member may sense a viewing distance between a viewer and the display device. The controlling member may calculate a proper viewing distance range, may compare the viewing distance with the proper viewing distance range to generate a comparison result, and may adjust the light transmittance of the light blocking member based on the comparison result.

Claims

1. A display device comprising:

a display panel comprising a pixel region and a transmission region;

a light blocking member disposed on a rear surface of the display panel and having an adjustable light transmittance;

a distance sensing member configured to sense a viewing distance between a viewer and the display device; and

a controlling member configured to calculate a proper viewing distance range, to compare the viewing distance with the proper viewing distance range to generate a comparison result, and to adjust the light transmittance of the light blocking member based on the comparison result.

2. The display device of claim 1, wherein the light blocking member comprises one of a suspended particle device (SPD), a liquid crystal device (LCD), a photochromic (PC) glass, an electrochromic (EC) glass, and a thermochromic (LTC) glass.

3. The display device of claim 1, wherein the light blocking member comprises:

a first transparent substrate and a second transparent substrate facing each other;

a first transparent electrode and a second transparent electrode respectively disposed on surfaces of the first transparent substrate and the second transparent substrate that face each other; and

an optical modulation layer interposed between the first transparent electrode and the second transparent electrode.

4. The display device of claim 1, wherein the proper viewing distance range is calculated based on a height (H) of the display panel.

5. The display device of claim 4, further comprising a storing member configured to store a diagonal length (D) and an aspect ratio (w:

h) of the display panel, and

wherein the height (H) of the display panel is calculated according to;

6. The display device of claim 4, wherein the proper viewing distance range (R) satisfies 0.9×

k×

H≦

R≦

1.1×

k×

H, where k is greater than or equal to 0.7 and less than or equal to 7.5.

7. The display device of claim 6, wherein k is equal to 0.75.

8. The display device of claim 6, wherein k is equal to 1.5.

9. The display device of claim 6, wherein k is equal to 3.

10. The display device of claim 6, wherein k is equal to 7.1.

11. The display device of claim 1, wherein the controlling member is further configured to adjust the light transmittance of the light blocking member to a first light transmittance when the viewing distance is within the proper viewing distance range, and to adjust the light transmittance of the light blocking member to a second light transmittance higher than the first light transmittance when the viewing distance is outside the proper viewing distance range.

12. A display method for a display device comprising a display panel comprising a pixel region and a transmission region, and a light blocking member having a variable light transmittance, the display method comprising:

sensing a viewing distance between a viewer and the display device;

calculating a proper viewing distance range;

comparing the viewing distance with the proper viewing distance range to generate a comparison result; and

adjusting the light transmittance of the light blocking member based on the comparison result.

13. The display method of claim 12, wherein calculating a proper viewing distance range further comprises calculating the proper viewing distance range based on a height (H) of the display panel.

14. The display method of claim 13, wherein the height (H) of the display panel is determined according to:

15. The display method of claim 13, wherein the proper viewing distance range (R) satisfies 0.9×

k×

H≦

R≦

1.1×

k×

H, where k is greater than or equal to 0.7 and less than or equal to 7.5.

16. The display method of claim 15, wherein k is equal to 0.75.

17. The display method of claim 15, wherein k is equal to 1.5.

18. The display method of claim 15, wherein k is equal to 3.

19. The display method of claim 15, wherein k is equal to 7.1.

20. The display method of claim 12, wherein the adjusting further comprises adjusting the light transmittance of the light blocking member to a first light transmittance when the viewing distance is within the proper viewing distance range, and adjusting the light transmittance of the light blocking member to a second light transmittance higher than the first light transmittance when the viewing distance is outside the proper viewing distance range.