Flat panel and flat panel display

Patent metadata

Field	Value
Publication number	US-2017236884-A1
Application number	US-201514902555-A
Country	US
Kind code	A1
Filing date	Sep 24, 2015
Priority date	Sep 7, 2015
Publication date	Aug 17, 2017
Grant date	—

Abstract

The present invention discloses a flat panel and a flat panel display. The flat panel comprises a plurality of pixels, and in each pixel: the first ion transport layer and the first transparent electrode layer respectively generate a first hole and a first electron, and the organic light emitting layer generates white light; the second ion transport layer and the second transparent electrode layer respectively generate a second hole and a second electron, and the electrochromic layer changes color; a value of the second voltage is adjusted to make the electrochromic layer change to be three colors of red, green, blue, and to correspondingly generate red light, green light and blue light with the white light generated by the organic light emitting layer, and the generated red light, green light and blue light are color mixed to be kinds of colors.

First claim

What is claimed is:

1 . A flat panel, comprising an electrochromic element and an organic electrochromic element, and the electrochromic element is located on the organic electrochromic element;
a first substrate for supporting, a first transparent electrode layer, a first ion transport layer, an organic light emitting layer, a first electron transport layer, a common electrode layer, which are sequentially stacked up to compose the organic electrochromic element; the common electrode layer, a second electron transport layer, an electrochromic layer, a second ion transport layer, a second transparent electrode layer and a second substrate for supporting, which are sequentially stacked up to compose the electrochromic element; the flat panel comprises a plurality of pixels, and in each pixel: a first voltage is applied between the first transparent electrode layer and the common electrode layer, and the first transparent electrode layer transmits the first voltage to the first ion transport layer, and the common electrode layer transmits the first voltage to the first electron transport layer, and the first ion transport layer and the first transparent electrode layer respectively transmit a first hole and a first electron under function of the first voltage, and the organic light emitting layer generates white light under function of the first hole and the first electron; a second voltage is applied between the second transparent electrode layer and the common electrode layer, and the second transparent electrode layer transmits the second voltage to the second ion transport layer, and the common electrode layer transmits the second voltage to the second electron transport layer, and the second ion transport layer and the second transparent electrode layer respectively transmit a second hole and a second electron under function of the second voltage, and the electrochromic layer changes color under function of the second hole and the second electron; a value of the second voltage is adjusted to make the electrochromic layer change to be three colors of red, green, blue at different times, and to correspondingly generate red light, green light and blue light with the white light generated by the organic light emitting layer, and the generated red light, green light and blue light are color mixed to be kinds of colors.

2 . The flat panel according to claim 1 , wherein when a brightness is required to be increased, a time ratio of generating the red light, green light and blue light is unchanged, and light emitting periods of generating the red light, green light and blue light are increased, and when brightness is required to be decreased, the time ratio of generating the red light, green light and blue light is unchanged, and the light emitting periods of generating the red light, green light and blue light are decreased.

3 . The flat panel according to claim 1 , wherein what the electrochromic layer utilizes is a combination of any one or more of Polythiophene and derivatives thereof, viologen, Tetrathiafulvalene, metallophthalocyanine.

4 . The flat panel according to claim 3 , wherein the electrochromic layer is formed by any one of etching, deposition, vapor deposition.

5 . The flat panel according to claim 1 , wherein material of the organic light emitting layer is a combination of any one or more of Polyvinylcarbazole, polyfluorene, Polyphenylene vinylene and Polythiophene.

6 . A flat panel display, comprising a flat panel and a base plate, and
the flat panel comprises an electrochromic element and an organic electrochromic element, and the electrochromic element is located on the organic electrochromic element; a first substrate for supporting, a first transparent electrode layer, a first ion transport layer, an organic light emitting layer, a first electron transport layer, a common electrode layer, which are sequentially stacked up to compose the organic electrochromic element; the common electrode layer, a second electron transport layer, an electrochromic layer, a second ion transport layer, a second transparent electrode layer and a second substrate for supporting, which are sequentially stacked up to compose the electrochromic element; the flat panel display comprises a plurality of pixels, and in each pixel: a first voltage is applied between the first transparent electrode layer and the common electrode layer, and the first transparent electrode layer transmits the first voltage to the first ion transport layer, and the common electrode layer transmits the first voltage to the first electron transport layer, and the first ion transport layer and the first transparent electrode layer respectively transmit a first hole and a first electron under function of the first voltage, and the organic light emitting layer generates white light under function of the first hole and the first electron; a second voltage is applied between the second transparent electrode layer and the common electrode layer, and the second transparent electrode layer transmits the second voltage to the second ion transport layer, and the common electrode layer transmits the second voltage to the second electron transport layer, and the second ion transport layer and the second transparent electrode layer respectively transmit a second hole and a second electron under function of the second voltage, and the electrochromic layer changes color under function of the second hole and the second electron; a value of the second voltage is adjusted to make the electrochromic layer change to be three colors of red, green, blue at different times, and to correspondingly generate red light, green light and blue light with the white light generated by the organic light emitting layer, and the generated red light, green light and blue light are color mixed to be kinds of colors.

7 . The flat panel display according to claim 6 , wherein when a brightness is required to be increased, a time ratio of generating the red light, green light and blue light is unchanged, and light emitting periods of generating the red light, green light and blue light are increased, and when brightness is required to be decreased, the time ratio of generating the red light, green light and blue light is unchanged, and the light emitting periods of generating the red light, green light and blue light are decreased.

8 . The flat panel display according to claim 6 , wherein what the electrochromic layer utilizes is a combination of any one or more of Polythiophene and derivatives thereof, viologen, Tetrathiafulvalene, metallophthalocyanine.

9 . The flat panel display according to claim 8 , wherein the electrochromic layer is formed by any one of etching, deposition and vapor deposition.

10 . The flat panel display according to claim 6 , wherein material of the organic light emitting layer is a combination of any one or more of Polyvinylcarbazole, polyfluorene, Polyphenylene vinylene and Polythiophene.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Zhu Jiang

Classifications

• H01L27/3232 Primary

  Electricity · mapped topic

• G02F2201/121

  common or background · CPC title

• G02F1/163

  Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor · CPC title

• G02F2001/1504

  Physics · mapped topic

• G02F1/155

  Electrodes · CPC title