ELECTRONIC DEVICE, LIGHT EMITTING UNIT, AND LIGHT-TRANSMISSIVE PANEL

• US 20130063050A1
• Filed: 04/20/2012
• Published: 03/14/2013
• Est. Priority Date: 09/13/2011
• Status: Abandoned Application

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: MORIKAWA, Hiroya, SAITOU, Eiji, SHIBATA, Kazuhiko
• Application Number:
  US13/452,059
• Publication Number:
  US 20130063050A1
• Time in Patent Office: Days
• US Class Current: 315/316
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2380/16 Digital picture frames
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/3426 the different display panel areas being distributed in two dimensions, e.g. matrix
• CPC Class Codes: G09G 3/36 using liquid crystals
• CPC Class Codes: H05B 45/18 using temperature feedback
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/105 in response to determined parameters

Abstract

An electronic device capable of displaying a light pattern in a section of a surface by turning on a light source includes: the light source; a first light-transmissive colored layer provided on the surface and having reflectance and transmittance that peak in a wavelength range of light of a first color; and a second light-transmissive colored layer provided on a path of light that is emitted from the light source and reaches the first light-transmissive colored layer, the second light-transmissive colored layer having transmittance that peaks in a wavelength range of light of a second color different from the first color. The second light-transmissive colored layer has light transmission characteristics adjusted such that light of a desired color exits the section of the surface where the light emitted from the light source reaches when the light source is turned on.

Claims

1. An electronic device for displaying a light pattern in a section of a surface by turning on a light source, comprising:

the light source;

a first light-transmissive colored layer provided on the surface and having reflectance and transmittance that peak in a wavelength range of light of a first color; and

a second light-transmissive colored layer provided on a path of light that is emitted from the light source and reaches the first light-transmissive colored layer, the second light-transmissive colored layer having transmittance that peaks in a wavelength range of light of a second color different from the first color,

wherein the second light-transmissive colored layer has light transmission characteristics adjusted such that light of a desired color exits the section of the surface where the light emitted from the light source reaches when the light source is turned on.

2. An electronic device according to claim 1, further comprising a light shielding layer disposed between the light source and the first light-transmissive colored layer, a part of the light shielding layer including a light transmitting pattern,

wherein the second light-transmissive colored layer is placed along a path of light being emitted from the light source, transmitted through the light transmitting pattern, and reaching the first light-transmissive colored layer, and

wherein the second light-transmissive colored layer has light transmission characteristics adjusted such that light of a desired color exits the section of the surface where the light emitted from the light source and transmitted through the light transmitting pattern reaches when the light source is turned on.

3. An electronic device according to claim 1, wherein the light source is an aggregation of a plurality of light source components arranged so as to display the light pattern in the section of the surface.

4. An electronic device according to claim 1, wherein, in the section of the surface, light reflected from the first light-transmissive colored layer is visible when the light source is turned off, and a color of light emitted from the light source and transmitted through the second light-transmissive colored layer and the first light-transmissive colored layer is visible when the light source is turned on.

5. An electronic device according to claim 1, wherein the second light-transmissive colored layer has light transmission characteristics adjusted such that light of the same color as that of light emitted from the light source exits the section of the surface when the light source is turned on.

6. An electronic device according to claim 1, wherein the second color is a complementary color of the first color.

7. An electronic device according to claim 6, wherein one of the first color and the second color is a color selected from the group consisting of red, green, and blue.

8. An electronic device according to claim 1, wherein the light source is a white light source.

9. An electronic device according to claim 1, wherein the first light-transmissive colored layer and the second light-transmissive colored layer are each made from one of ink and paint.

10. An electronic device according to claim 2, wherein the light transmitting pattern is shaped like one of letters and a graphic form.

11. An electronic device according to claim 1, further comprising:

an input interface configured to receive an instruction from a user; and

a processor configured to control turning on and off of the light source based on the instruction from the user.

12. An electronic device according to claim 1, further comprising:

a sensor configured to ditect a tilt; and

a processor configured to control turning on and off of the light source based on the tilt detected by the sensor.

13. A light emitting unit for displaying a light pattern in a section of a surface of a device by turning on a light source, comprising:

the light source;

a first light-transmissive colored layer having reflectance and transmittance that peak in a wavelength range of light of a first color; and

a second light-transmissive colored layer provided on a path of light that is emitted from the light source and reaches the first light-transmissive colored layer, the second light-transmissive colored layer having transmittance that peaks in a wavelength range of light of a second color different from the first color,

wherein the second light-transmissive colored layer has light transmission characteristics adjusted such that light of a desired color exits the section of the surface where the light emitted from the light source reaches when the light source is turned on.

14. A light emitting unit according to claim 13, further comprising a light shielding layer disposed between the light source and the first light-transmissive colored layer, a part of the light shielding layer including a light transmitting pattern,

wherein the second light-transmissive colored layer is placed along a path of light being emitted from the light source, transmitted through the light transmitting pattern, and reaching the first light-transmissive colored layer, and

wherein the second light-transmissive colored layer has light transmission characteristics adjusted such that light of a desired color exits the section of the surface where the light emitted from the light source and transmitted through the light transmitting pattern reaches when the light source is turned on.

15. A light emitting unit according to claim 13, wherein the light source is an aggregation of a plurality of light source components arranged so as to display the light pattern in the section of the surface.

16. A light-transmissive panel for use in an electronic device for displaying a light pattern in a section of a surface by turning on a light source, comprising:

a first light-transmissive colored layer having reflectance and transmittance that peak in a wavelength range of light of a first color; and

a second light-transmissive colored layer provided on a path of light that is emitted from the light source and reaches the first light-transmissive colored layer, the second light-transmissive colored layer having transmittance that peaks in a wavelength range of light of a second color different from the first color,

wherein the second light-transmissive colored layer has light transmission characteristics adjusted such that light emitted from the light source and transmitted through the first light-transmissive colored layer has a desired color when the light source is turned on.

17. A light-transmissive panel according to claim 16, further comprising a light shielding layer disposed close to the first light-transmissive colored layer, a part of the light shielding layer including a light transmitting pattern,

wherein the second light-transmissive colored layer is placed along a path of light being emitted from the light source, transmitted through the light transmitting pattern, and reaching the first light-transmissive colored layer, and

wherein the second light-transmissive colored layer has light transmission characteristics adjusted such that light being emitted from the light source, transmitted through the light transmitting pattern, and exiting the first light-transmissive colored layer has a desired color when the light source is turned on.