阅读说明：本技术 一种采用混合型发光二极管的显示屏幕及其制备方法 (Display screen adopting mixed type light-emitting diode and preparation method thereof ) 是由 吕泉 刘书毅 徐刚 金陶煐 何为 于 2018-08-29 设计创作，主要内容包括：本申请提供了一种采用混合型发光二极管的显示屏幕及制造方法。该显示屏幕包括：背板、第一导电层、红色量子点发光二极管QLED、绿色QLED、蓝色有机发光二极管OLED和第二导电层,其中,第一导电层位于背板的表面,第一导电层的极性为阳极；红色QLED、QLED和蓝色OLED分别位于第一导电层表面的第一区域、第二区域和第三区域,红色QLED是采用红色量子点作为发光层的发光二极管,绿色QLED是采用绿色量子点作为发光层的发光二极管,蓝色OLED是采用蓝色有机发光材料作为发光层的发光二极管,第一区域、第二区域和第三区域中的任意两个区域之间互不重叠；第二导电层位于红色QLED、绿色QLED和蓝色OLED的表面,第二导电层的极性为阴极。本申请的显示屏幕在具有较广色域范围的同时又具有较长的寿命。(The application provides a display screen adopting a mixed type light emitting diode and a manufacturing method thereof. The display screen includes: the LED backlight module comprises a back plate, a first conducting layer, a red quantum dot light emitting diode (QLED), a green QLED, a blue Organic Light Emitting Diode (OLED) and a second conducting layer, wherein the first conducting layer is positioned on the surface of the back plate, and the polarity of the first conducting layer is an anode; the red QLED, the QLED and the blue OLED are respectively positioned in a first area, a second area and a third area on the surface of the first conductive layer, the red QLED is a light-emitting diode adopting red quantum dots as a light-emitting layer, the green QLED is a light-emitting diode adopting green quantum dots as a light-emitting layer, the blue OLED is a light-emitting diode adopting a blue organic light-emitting material as a light-emitting layer, and any two areas of the first area, the second area and the third area are not overlapped with each other; the second conducting layer is arranged on the surfaces of the red QLED, the green QLED and the blue OLED, and the polarity of the second conducting layer is a cathode. The display screen has a wide color gamut range and a long service life.)

A display screen employing hybrid light emitting diodes, comprising:

a back plate;

the first conducting layer is positioned on the surface of the back plate, and the polarity of the first conducting layer is an anode;

the red QLED is a light-emitting diode adopting red quantum dots as a light-emitting layer, the green QLED is a light-emitting diode adopting green quantum dots as a light-emitting layer, the blue OLED is a light-emitting diode adopting a blue organic light-emitting material as a light-emitting layer, and any two of the first region, the second region and the third region are not overlapped with each other;

and the second conducting layer is positioned on the surfaces of the red QLED, the green QLED and the blue OLED, and the polarity of the second conducting layer is a cathode.

The display screen of claim 1, wherein the red QLED comprises a first hole transport layer HTL, a red quantum dot, and a first electron transport layer ETL arranged in a stack along a first direction, wherein the first HTL is in contact with the first conductive layer;

the green QLED comprises a second HTL, a green quantum dot and a second ETL which are arranged in a stacking mode along the first direction, wherein the second HTL is in contact with the first conducting layer;

the blue OLED includes a third HTL, a blue organic light emitting material, and a third ETL stacked along the first direction, wherein the third HTL is in contact with the first conductive layer, and wherein the first direction is a direction from the first conductive layer to the second conductive layer.

A display screen in accordance with claim 2 wherein the first ETL and the second ETL are integrally formed.

The display screen of claim 2 or 3, wherein the first HTL, the second HTL, and the third HTL are integrally formed.

A display screen employing hybrid light emitting diodes, comprising:

a back plate;

the first conducting layer is positioned on the surface of the back plate, and the polarity of the first conducting layer is an anode;

a second conductive layer having a polarity of a cathode;

the LED comprises a red quantum dot light-emitting diode QLED, a green QLED and a blue organic light-emitting diode OLED, wherein the red QLED, the green QLED and the blue OLED are arranged in a stacking mode along a first direction, the red QLED is in contact with the first conducting layer, the blue OLED is in contact with the second conducting layer, and the first direction is a direction from the first conducting layer to the second conducting layer;

and the red, green and blue filters are positioned on the surface of the second conducting layer.

The display screen of claim 5, wherein the first and second conductive layers include a first HTL, a red quantum dot, a first ETL, a second HTL, a green quantum dot, a second ETL, a third HTL, a blue organic light emitting material, and a third ETL disposed in a stack along the first direction;

wherein the first HTL, the red quantum dot, and the first ETL constitute the red QLED, the second HTL, the green quantum dot, and the second ETL constitute the green QLED, and the third HTL, the blue organic light emitting material, and the third ETL constitute the blue OLED.

The display screen of claim 6, wherein the first ETL is comprised of zinc oxide, ZnO, and the second HTL is comprised of an oxide of molybdenum; alternatively, the first and second electrodes may be,

the first ETL is composed of magnesium oxide, MgO, and the second HTL is composed of an oxide of molybdenum; alternatively, the first and second electrodes may be,

the first ETL is composed of zinc magnesium oxide (ZnMgO), and the second HTL is composed of an oxide of molybdenum; alternatively, the first and second electrodes may be,

the first ETL is composed of ZnO, and the second HTL is composed of an oxide of nickel; alternatively, the first and second electrodes may be,

the first ETL is comprised of MgO and the second HTL is comprised of an oxide of nickel; alternatively, the first and second electrodes may be,

the first ETL is comprised of ZnMgO and the second HTL is comprised of an oxide of nickel.

The display screen of claim 6, wherein the second ETL is comprised of ZnO and the third HTL is comprised of an oxide of molybdenum; alternatively, the first and second electrodes may be,

the second ETL is comprised of MgO and the third HTL is comprised of an oxide of molybdenum; alternatively, the first and second electrodes may be,

the second ETL is comprised of ZnMgO and the third HTL is comprised of an oxide of molybdenum; alternatively, the first and second electrodes may be,

the second ETL is composed of ZnO, and the third HTL is composed of an oxide of nickel; alternatively, the first and second electrodes may be,

the second ETL is comprised of MgO and the third HTL is comprised of an oxide of nickel; alternatively, the first and second electrodes may be,

the second ETL is comprised of ZnMgO and the third HTL is comprised of an oxide of nickel.

A method for manufacturing a display screen using a hybrid photodiode, comprising:

manufacturing a first conductive layer on the surface of the back plate, wherein the polarity of the first conductive layer is an anode;

respectively manufacturing a red quantum dot light-emitting diode (QLED) and a green QLED in a first area and a second area on the surface of the first conductive layer by adopting a transfer printing technology;

manufacturing a blue organic light-emitting diode (OLED) in a third area on the surface of the first conductive layer by adopting an evaporation technology, wherein the first area, the second area and the third area are not overlapped with each other, the red QLED is a light-emitting diode adopting red quantum dots as a light-emitting layer, the green QLED is a light-emitting diode adopting green quantum dots as a light-emitting layer, and the blue OLED is a light-emitting diode adopting a blue organic light-emitting material as a light-emitting layer;

and manufacturing a second conducting layer, wherein the second conducting layer covers the surfaces of the red QLED, the green QLED and the blue OLED, and the polarity of the second conducting layer is a cathode.

A method for manufacturing a display screen using a hybrid photodiode, comprising:

manufacturing a first conductive layer on the surface of the back plate, wherein the polarity of the first conductive layer is an anode;

sequentially manufacturing a red quantum dot light-emitting diode (QLED) and a green QLED on the surface of the first conductive layer by adopting a transfer printing technology, wherein the red QLED is in contact with the first conductive layer, and the green QLED is positioned on the surface of the red QLED;

manufacturing a blue Organic Light Emitting Diode (OLED) on the surface of the green QLED by adopting an evaporation technology;

manufacturing a second conducting layer on the surface of the blue OLED, wherein the polarity of the second conducting layer is a cathode;

and arranging red, green and blue filters on the surface of the second conducting layer.