Display device and method of operating the same
First Claim
1. A display device, comprising:
- a display panel including a plurality of subpixels configured to output image light;
a light guide portion including a front surface and a rear surface configured to guide the image light of the display panel by reflecting the image light at least one time;
a semi-transmissive portion configured to;
reflect the image light, guided by the light guide portion, toward the outside of the light guide portion; and
at the same time;
transmit a first portion of external light entering the light guide portion; and
reflect a second portion of the external light; and
a reflective portion including a reflective material configured to reflect the second portion of the external light, reflected by the semi-transmissive portion, toward the display panel,wherein the display panel includes a light sensor configured to sense the second portion of the external light reflected by the reflective portion,wherein luminance of the image light of the display panel is changed in accordance with the amount of the external light sensed by the light sensor,wherein the semi-transmissive portion comprises;
a first surface facing the rear surface; and
a second surface facing the front surface,the first surface is configured to reflect the image light, guided by the light guide portion, toward the rear surface, andthe second surface is configured to;
transmit the first portion of the external light, entering through the front surface, toward the rear surface; and
at the same time, reflect the second portion of the external light toward the reflective portion.
1 Assignment
0 Petitions
Accused Products
Abstract
A display device includes: a display panel for outputting image light, a light guide portion for guiding the image light by reflecting the image light at least one time, a semi-transmissive portion for: reflecting the image light, guided by the light guide portion, toward the outside of the light guide portion, and at the same time: transmitting a first portion of external light entering the light guide portion, and reflecting a second portion of the external light, and a reflective portion for reflecting the second portion of the external light, reflected by the semi-transmissive portion, toward the display panel, wherein the display panel includes a light sensor for sensing the second portion of the external light reflected by the reflective portion, and wherein luminance of the image light of the display panel is changed in accordance with the amount of the external light sensed by the light sensor.
13 Citations
19 Claims
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1. A display device, comprising:
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a display panel including a plurality of subpixels configured to output image light; a light guide portion including a front surface and a rear surface configured to guide the image light of the display panel by reflecting the image light at least one time; a semi-transmissive portion configured to; reflect the image light, guided by the light guide portion, toward the outside of the light guide portion; and at the same time; transmit a first portion of external light entering the light guide portion; and reflect a second portion of the external light; and a reflective portion including a reflective material configured to reflect the second portion of the external light, reflected by the semi-transmissive portion, toward the display panel, wherein the display panel includes a light sensor configured to sense the second portion of the external light reflected by the reflective portion, wherein luminance of the image light of the display panel is changed in accordance with the amount of the external light sensed by the light sensor, wherein the semi-transmissive portion comprises; a first surface facing the rear surface; and a second surface facing the front surface, the first surface is configured to reflect the image light, guided by the light guide portion, toward the rear surface, and the second surface is configured to; transmit the first portion of the external light, entering through the front surface, toward the rear surface; and at the same time, reflect the second portion of the external light toward the reflective portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of operating a display device, the method comprising:
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outputting, by a display panel, image light; guiding, by a light guide portion, the image light of the display panel by reflecting the image light at least one time; reflecting, by a semi-transmissive portion, the image light, guided by the light guide portion, toward the outside of the light guide portion; and simultaneously, by the semi-transmissive portion; transmitting a first portion of external light entering the light guide portion; and reflecting a second portion of the external light; reflecting, by a reflective portion, the second portion of the external light, reflected by the semi-transmissive portion, toward the display panel; sensing, by a light sensor in the display panel, the second portion of the external light reflected by the reflective portion; and changing luminance of the image light of the display panel in accordance with the amount of the external light sensed by the light sensor; wherein the light guide portion comprises; a front surface configured to receive the external light; and a rear surface configured to receive the image light, and wherein the semi-transmissive portion comprises; a first surface facing the rear surface; and a second surface facing the front surface, the first surface is configured to reflect the image light, guided by the light guide portion, toward the rear surface, and the second surface is configured to; transmit the first portion of the external light, entering through the front surface, toward the rear surface; and at the same time, reflect the second portion of the external light toward the reflective portion. - View Dependent Claims (17, 18, 19)
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Specification