US-12625410-B2 - Hybrid display and control method thereof

US12625410B2US 12625410 B2US12625410 B2US 12625410B2US-12625410-B2

Abstract

A hybrid display is disclosed. The hybrid display includes an electrophoretic module configured to display information through reflection of light incident from an exterior thereof, and a light emitting module formed at a lower surface of the electrophoretic module, to output color light to the electrophoretic module. The electrophoretic module includes a first substrate, a second substrate spaced apart from the first substrate, a plurality of capsules disposed between the first substrate and the second substrate, each of the capsules containing particles having a color and a fluid having a color therein, and an electrode configured to apply an electric filed to the capsule, thereby moving the particles. The color light output from the light emitting module is mixed with the color of the fluid, and is then outwardly output. The hybrid display exhibits excellent visibility even in a dark environment, and the background color thereof is variously changeable.

Inventors

Soon Hyung Kwon

Assignees

KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Dates

Publication Date: 20260512
Application Date: 20231023
Priority Date: 20221024

Claims (8)

1 . A hybrid display comprising: an electrophoretic module configured to display information through reflection of light incident from an exterior thereof; and a light emitting module formed at a lower surface of the electrophoretic module and configured to output color light to the electrophoretic module, wherein the electrophoretic module comprises: a first substrate; a second substrate disposed to be spaced apart from the first substrate; a plurality of capsules disposed between the first substrate and the second substrate, each of the capsules containing particles having a color and a fluid having a color therein; and electrodes configured to apply an electric field to the capsule, thereby moving the particles, wherein the electrodes are disposed at both lower ends of each capsule such that movement of the particles toward respective ends allows the color light output from the light emitting module to pass through the capsule, and wherein the color light output from the light emitting module is mixed with the color of the fluid, and is then outwardly output.
2 . The hybrid display of claim 1 , wherein: the light emitting module comprises: a first emission layer configured to output light of a first color; a second emission layer configured to output light of a second color; and a third emission layer configured to output light of a third color; and the first emission layer, the second emission layer, and the third emission layer are made of transparent materials, respectively, and are formed through sequential stacking thereof.
3 . The hybrid display of claim 1 , wherein: the light emitting module comprises: a first emission layer configured to output light of a first color; a second emission layer configured to output light of a second color; and a third emission layer configured to output light of a third color; and each of the first emission layer, the second emission layer, and the third emission layer comprises a light source and a light guide plate made of a transparent material, and the light guide plates of the first emission layer, the second emission layer, and the third emission layer are formed through sequential stacking thereof.
4 . The hybrid display of claim 1 , wherein: each of the plurality of capsules comprises: an A-particle of an A-color; a B-particle of a B-color; and a fluid of a C-color; and the electrode comprises: a first electrode formed on the first substrate using a transparent material and disposed at one side under the capsule; a second electrode formed on the first substrate using a transparent material and disposed at an opposite side under the capsule; and a third electrode formed under the second substrate using a transparent material and disposed on the capsule.
5 . The hybrid display of claim 4 , wherein the fluid of the C-color comprises a dye or a pigment representing the C-color, and selectively further comprises glitter or a pearl.
6 . A control method of a hybrid display comprising: controlling an electrophoretic module to display information through reflection of light incident from an exterior thereof; and controlling a light emitting module formed at a lower surface of the electrophoretic module to output color light to the electrophoretic module, wherein the color light output from the light emitting module is displayed in a state of being color-mixed with a color of a fluid of a capsule in the electrophoretic module, wherein the electrophoretic module includes a plurality of capsules each including particles having a color and a fluid having a color therein, and electrodes disposed at both lower ends of each capsule and configured to apply an electric field to the capsule to move the particles, and wherein the controlling an electrophoretic module comprises moving, toward respective ends in response to an operation of the electrodes, the particles within the capsule such that the color light output from the light emitting module passes through the capsule.
7 . The control method of claim 6 , wherein: the controlling an electrophoretic module comprises: moving, toward an upper side of the capsule, the particles of the capsule such that the color light output from the light emitting module is blocked by the particles of the capsule, thereby causing the particles of the capsule to be outwardly displayed; and the moving of particles toward respective ends and the moving of the particles toward an upper side are independently executed on a pixel basis.
8 . The control method of claim 6 , wherein: the controlling a light emitting module comprises: individual control of operating only one of a first emission layer configured to output light of a first color, a second emission layer configured to output light of a second color, and a third emission layer configured to output light of a third color; and complex control of simultaneously operating two or more of the first emission layer, the second emission layer, and the third emission layer; and one of the individual control and the complex control is executed in accordance with given setting.

Description

CROSS REFERENCE TO RELATED APPLICATION This patent document claims the priority and benefits of Korean Patent Application No. 10-2022-0137461, filed Oct. 24, 2022, the entire contents of which is incorporated herein by reference for all purposes. TECHNICAL FIELD The present disclosure relates to a hybrid display and a control method thereof. BACKGROUND Displays are classified into a display of a transmissive type in which an image is displayed through transmission of backlight and a display of a reflective type in which an image is displayed through reflection of ambient light. The transmissive type display exhibits great consumption of electrical energy because a backlight should always operate. As such a transmissive type display, there are an LED display, an OLED display, a quantum dot display, etc. The reflective type display exhibits low consumption of electrical energy because no backlight is required, even though visibility is low when ambient light is dark. As such a reflective type display, there is an electrophoretic display, etc. SUMMARY Therefore, the present disclosure has been made in view of the above problems, and it is an object of the present disclosure to provide a hybrid display of a mixed type of a reflective type and a transmissive type. In accordance with an aspect of the present disclosure, the above and other objects can be accomplished by the provision of a hybrid display including an electrophoretic module configured to display information through reflection of light incident from an exterior thereof, and a light emitting module formed at a lower surface of the electrophoretic module and configured to output color light to the electrophoretic module, wherein the electrophoretic module includes a first substrate, a second substrate disposed to be spaced apart from the first substrate, a plurality of capsules disposed between the first substrate and the second substrate, each of the capsules containing particles having a color and a fluid having a color therein, and an electrode configured to apply an electric filed to the capsule, thereby moving the particles, wherein the color light output from the light emitting module is mixed with the color of the fluid, and is then outwardly output. In accordance with an embodiment, the light emitting module may include a first emission layer configured to output light of a first color, a second emission layer configured to output light of a second color, and a third emission layer configured to output light of a third color. The first emission layer, the second emission layer, and the third emission layer may be made of transparent materials, respectively, and may be formed through sequential stacking thereof. In accordance with an embodiment, the light emitting module may include a first emission layer configured to output light of a first color, a second emission layer configured to output light of a second color, and a third emission layer configured to output light of a third color. Each of the first emission layer, the second emission layer, and the third emission layer may include a light source and a light guide plate made of a transparent material, and the light guide plates of the first emission layer, the second emission layer, and the third emission layer may be formed through sequential stacking thereof. In accordance with an embodiment, each of the plurality of capsules may include an A-particle of an A-color, a B-particle of a B-color, and a fluid of a C-color. The electrode may include a first electrode formed on the first substrate using a transparent material and disposed at one side under the capsule, a second electrode formed on the first substrate using a transparent material and disposed at an opposite side under the capsule, and a third electrode formed under the second substrate using a transparent material and disposed on the capsule. In accordance with an embodiment, the fluid of the C-color may include a dye or a pigment representing the C-color, and may selectively further include glitter or a pearl. In another aspect of the disclosure, there is provided a control method of a hybrid display including controlling an electrophoretic module to display information through reflection of light incident from an exterior thereof, and controlling a light emitting module formed at a lower surface of the electrophoretic module to output color light to the electrophoretic module, wherein the color light output from the light emitting module is displayed in a state of being color-mixed with a color of a fluid of a capsule in the electrophoretic module. In accordance with an embodiment, the controlling an electrophoretic module may include moving, to one side, particles of the capsule of the electrophoretic module such that light output from the light emitting module passes through the capsule, and moving, to a front side, the particles of the capsule such that the light output from the light emitting module is blocked by the par