Display panel, display method thereof and display device

Patent metadata

Field	Value
Publication number	US-2018067369-A1
Application number	US-201615329178-A
Country	US
Kind code	A1
Filing date	May 6, 2016
Priority date	Feb 3, 2016
Publication date	Mar 8, 2018
Grant date	—

Abstract

A display panel, a display method thereof and a display device are disclosed. The display panel includes an electrochromic layer ( 101 ) and an electrolyte layer ( 102 ) arranged in a stacked manner, and at least one kind of colored charged particles ( 103 ) being provided in the electrolyte layer ( 102 ). While the electrochromic layer ( 102 ) is transparent, the display panel displays color of the colored charged particles ( 103 ). The display panel may further display the color of the colored charged particles, which increases diversity of the colors displayed by the display panel.

First claim

1 . A display panel, comprising: an electrochromic layer and an electrolyte layer arranged in a stacked manner, and at least one kind of colored charged particles being provided in the electrolyte layer;
wherein, in condition that the electrochromic layer is transparent, the display panel displays color of the colored charged particles.

2 . The display panel according to claim 1 , further comprising: a plurality of pixel units arranged in a matrix, wherein,
a pixel barrier wall is provided in a gap between pixel units in adjacent columns and adjacent rows; and the electrochromic layer and the electrolyte layer are located in a chamber enclosed by the pixel barrier wall.

3 . The display panel according to claim 1 , wherein,
the material of the electrochromic layer is an anode allochroic material, and the colored charged particles are positively charged; or, the material of the electrochromic layer is a cathode allochroic material, and the colored charged particles are negatively charged.

4 . The display panel according to claim 1 , wherein the colored charged particles comprise only one kind of charged particles.

5 . The display panel according to claim 4 , wherein the color of the colored charged particles is white or black.

6 . The display panel according to claim 1 , wherein the colored charged particles comprise only first charged particles and second charged particles; an electric quantity of the first charged particles is same as an electric quantity of the second charged particles; and a mobility of the first charged particles is larger than a mobility of the second charged particles.

7 . The display panel according to claim 6 , wherein,
the color of the first charged particles is white, and color of the second charged particles is black; or, the color of the first charged particles is black, and the color of the second charged particles is white.

8 . The display panel according to claim 1 , wherein,
with respect to the electrolyte layer, the electrochromic layer is closer to a display side of the display panel.

9 . A display device, comprising the display panel according to claim 1 .

10 . A display method of the display panel according to claim 1 , comprising:
applying a voltage difference to the electrochromic layer in the display panel; the colored charged particles in the display panel migrating to a side close to the electrochromic layer under an effect of an electric field force, while the applied voltage difference makes the electrochromic layer become transparent, so that the display panel displays color of the colored charged particles.

11 . The display method according to claim 10 , wherein,
a material of the electrochromic layer is an anode allochroic material, and the colored charged particles are positively charged; or, a material of the electrochromic layer is a cathode allochroic material, and the colored charged particles are negatively charged.

12 . The display method according to claim 11 , wherein,
the colored charged particles comprise only one kind of charged particles; and the step of the colored charged particles in the display panel migrating to a side close to the electrochromic layer under an effect of an electric field force comprises: the charged particles migrating to the side close to the electrochromic layer under the effect of the electric field force, when the voltage difference is negative, if the material of the electrochromic layer is an anode allochroic material; and the charged particles migrating to the side close to the electrochromic layer under the effect of the electric field force, when the voltage difference is positive, if the material of the electrochromic layer is a cathode allochroic material.

13 . The display method according to claim 11 , wherein,
the colored charged particles comprises only the first charged particles and the second charged particles, and the material of the electrochromic layer is an anode allochroic material, the first charged particles and the second charged particles are both positively charged; an electric quantity of the first charged particles is same as an electric quantity of the second charged particles, and a mobility of the first charged particles is larger than a mobility of the second charged particles; the step of the colored charged particles in the display panel migrating to a side close to the electrochromic layer under an effect of an electric field force comprises:
the first charged particles migrating to the side closer to the electrochromic layer than the second charged particles under the effect of the electric field force, when an absolute value of the voltage difference is between an absolute value of a first preset voltage value and an absolute value of a second preset voltage value; and,
the second charged particles migrating to the side closer to the electrochromic layer than the first charged particles under the effect of the electric field force, when an absolute value of the voltage difference is equal to or greater than the absolute value of the second preset voltage value; and
the absolute value of the first preset voltage value is a minimum voltage absolute value that enables the anode allochroic material to become transparent and to drive the first charged particles to migrate; the absolute value of the second preset voltage value is a minimum voltage absolute value that enables the anode allochroic material to become transparent and to drive the second charged particles to migrate; the first preset voltage value and the second preset voltage value are negative; and the first preset voltage value is larger than the second preset voltage value.

14 . The display method according to claim 11 , wherein,
the colored charged particles comprise only the first charged particles and the second charged particles, and the material of the electrochromic layer is a cathode allochroic material, the first charged particles and the second charged particles are both negatively charged; an electric quantity of the first charged particles is the same as an electric quantity of the second charged particles, and an mobility of the first charged particles is larger than an mobility of the second charged particles; the step of the colored charged particles in the display panel migrating to a side close to the electrochromic layer under an effect of an electric field force comprises:
the first charged particles migrating to the side closer to the electrochromic layer than the second charged particles under the effect of the electric field force, when the voltage difference is between a third preset voltage value and a fourth preset voltage value; and
the second charged particles migrating to the side closer to the electrochromic layer than the first charged particles under the effect of the electric field force, when the voltage difference is equal to or greater than the fourth preset voltage value;
the third preset voltage value is a minimum voltage value that enables the cathode allochroic material to become transparent and to drive the first charged particles to migrate; the fourth preset voltage value is a minimum voltage value that enables the cathode allochroic material to become transparent and to drive the second charged particles to migrate; the third preset voltage value and the fourth preset voltage value are positive; and the third preset voltage value is smaller than the fourth preset voltage value.

15 . A display panel, comprising: an electrochromic layer and an electrolyte layer arranged in a stacked manner, and at least one kind of colored charged particles being provide

Assignees

• Boe Technology Group Co Ltd

Inventors

• Gu Xin

Classifications

• G02F2201/123

  pixel · CPC title

• G02F1/157

  Structural association of cells with optical devices, e.g. reflectors or illuminating devices · CPC title

• G02F1/155 Primary

  Electrodes · CPC title

• G02F2201/50

  Protective arrangements · CPC title

• H01M4/0442

  Anodisation, Oxidation (electrolytic coating by anodisation C25D9/00) · CPC title