阅读说明：本技术 Micro LED显示装置 (Micro LED display device ) 是由 李潇 赵英明 于 2018-05-31 设计创作，主要内容包括：本申请提供一种Micro LED显示装置,用以减少像素之间的色彩串扰,本申请提供的一种Micro LED显示装置包括：相对设置的驱动基板和封装基板,所述驱动基板面向所述封装基板的一面上设有呈阵列排布的多个蓝光Micro LED,所述封装基板一面上设有彩色像素层,所述彩色像素层包括红色子像素单元、绿色子像素单元和蓝色子像素单元,还包括：设于所述彩色像素层面向所述多个蓝光Micro LED的一面上仅允许蓝光透过的第一蓝光FP透光层。(The application provides a Micro LED display device for reduce the color crosstalk between the pixel, the Micro LED display device that this application provided includes: relative drive base plate and the packaging substrate who sets up, the drive base plate towards be equipped with a plurality of blue light Micro LEDs that are the array and arrange in one side of packaging substrate, packaging substrate is equipped with the color pixel layer in one side, the color pixel layer includes red sub-pixel unit, green sub-pixel unit and blue sub-pixel unit, still includes: and the first blue light FP euphotic layer is arranged on one surface, facing the plurality of blue light Micro LEDs, of the color pixel layer and only allows blue light to penetrate through.)

1. a Micro LED display device, comprising: relative drive base plate and packaging substrate who sets up, drive base plate towards be equipped with a plurality of blue light emitting diode Micro LEDs that are the array and arrange on packaging substrate's the one side, be equipped with colored pixel layer on packaging substrate's the one side, colored pixel layer includes red sub-pixel unit, green sub-pixel unit and blue sub-pixel unit, its characterized in that still includes: and the first blue light Fabry-Perot FP euphotic layer is arranged on one surface, facing the plurality of blue light Micro LEDs, of the color pixel layer and only allows blue light to transmit.

2. A Micro LED display device according to claim 1, wherein each sub-pixel cell corresponds to one of the blue Micro LEDs.

3. A Micro LED display device according to claim 1, wherein the FP transparent layer comprises: the first reflecting layer and the second reflecting layer which form a cavity of the FP resonant cavity are oppositely arranged, and the filling layer which is arranged between the first reflecting layer and the second reflecting layer and used for adjusting the optical path of light rays is arranged.

4. a Micro LED display device according to claim 3, wherein the first reflective layer is a silver layer or a distributed bragg reflector DBR;

The second reflecting layer is a silver layer or a DBR reflecting layer.

5. A Micro LED display device according to claim 4, wherein the first reflective layer has a reflectivity of 60% -80%;

The reflectivity of the second reflecting layer is 60% -80%.

6. A Micro LED display device according to claim 3, wherein the material of the filler layer is tungsten trioxide or polyvinylidene fluoride.

7. A Micro LED display device according to claim 1, wherein the blue light emitted by the blue Micro LED has a wavelength of 450-.

8. A Micro LED display device according to any of claims 1-7, further comprising: the plurality of red light FP light-transmitting layers which are arranged on one surface of the color pixel layer, which is far away from the plurality of blue light Micro LEDs, only allow red light to transmit, green light FP light-transmitting layers which only allow green light to transmit and a second blue light FP light-transmitting layer which only allows blue light to transmit; the red light FP euphotic layer, the green light FP euphotic layer and the second blue light FP euphotic layer respectively correspond to a red sub-pixel, a green sub-pixel and a blue sub-pixel of the Micro LED display device.

9. The Micro LED display device of claim 8, wherein the thickness of the filling layer of the red FP transparent layer is 775-787 nm;

The thickness of the filling layer of the green light FP transparent layer is 650-662 nm;

The thickness of the filling layer of the second blue light FP transparent layer is 562-600 nm.

10. The Micro LED display device of claim 8, wherein the red FP transparent layer, the green FP transparent layer and the second blue FP transparent layer are disposed in a same layer.

Technical Field

The application relates to the technical field of Micro LED display, in particular to a Micro LED display device.

Background

micro Light Emitting diodes (Micro LEDs) are a new generation of display technology, and have self-luminous display characteristics, and compared with the existing Organic Light-Emitting Diode (OLED) technology, Micro LED display devices have the advantages of higher brightness, better luminous efficiency, and lower power consumption.

Currently, referring to fig. 1, a Micro LED display device for color display generally includes: the display device comprises a driving substrate 11 and a packaging substrate 12 which are arranged oppositely, wherein one surface of the driving substrate 11 facing the packaging substrate 12 is provided with a plurality of blue light Micro LEDs 13 (each sub-pixel of a Micro LED display device is correspondingly provided with one blue light Micro LED), which are arranged in an array manner, and one surface of the packaging substrate 12 is provided with a color pixel layer; the color pixel layer includes a red sub-pixel unit 14-1, a green sub-pixel unit 14-2 and a blue sub-pixel unit 14-3, wherein the color conversion material in the color pixel layer may be phosphor or quantum dots, in other words, the color conversion material in the red (R) sub-pixel 14-1 of the Micro LED display device may be red phosphor or red quantum dots, the color conversion material in the green (G) sub-pixel 14-2 of the Micro LED display device may be green phosphor or green quantum dots, the blue (B) sub-pixel 14-3 of the Micro LED display device may not have quantum dot material, and the blue light directly passes through the blue sub-pixel.

However, as shown in fig. 1, in the Micro LED display device, since the divergence angle of the blue Micro LED13 is large, color crosstalk between pixels is easily caused.

Disclosure of Invention

In view of the foregoing, the present application provides a Micro LED display device for reducing color crosstalk between pixels.

In a first aspect, an embodiment of the present application provides a Micro LED display device, including: relative drive base plate and the packaging substrate who sets up, the drive base plate towards be equipped with a plurality of blue light emitting diode Micro LEDs that are the array and arrange on packaging substrate's the one side, be equipped with colored pixel layer on packaging substrate's the one side, colored pixel layer includes red sub pixel unit, green sub pixel unit and blue sub pixel unit, still includes: and the first blue light Fabry-Perot FP euphotic layer is arranged on one surface, facing the plurality of blue light Micro LEDs, of the color pixel layer and only allows blue light to transmit.

Above-mentioned Micro LED display device, because colored pixel layer is equipped with the first blue light FP euphotic layer that only allows blue light to see through on the one side towards a plurality of blue light Micro LED for when the blue light that blue light Micro LED sent passes through this first blue light FP euphotic layer, the blue light that sees through is mainly concentrated in the blue light of small-angle incidence (being equivalent to reducing blue light Micro LED's divergence angle), when the blue light that sees through passes through colored pixel layer again, the blue light in arbitrary sub-pixel unit just can not influence adjacent sub-pixel unit almost, consequently, can reduce the color crosstalk between the pixel.

In a possible implementation manner, each sub-pixel unit corresponds to one blue light Micro LED.

In one possible implementation manner, the FP transparent layer includes: the first reflecting layer and the second reflecting layer which form a cavity of the FP resonant cavity are oppositely arranged, and the filling layer which is arranged between the first reflecting layer and the second reflecting layer and used for adjusting the optical path of light rays is arranged.

In a possible implementation manner, the first reflective layer is a silver layer or a distributed bragg reflector DBR;

The second reflecting layer is a silver layer or a DBR reflecting layer.

in one possible implementation, the reflectivity of the first reflective layer is 60% -80%;

The reflectivity of the second reflecting layer is 60% -80%.

In a possible implementation manner, the material of the filling layer is tungsten trioxide or polyvinylidene fluoride.

in a possible implementation manner, the wavelength of the blue light emitted by the blue light Micro LED is 450-.

in a possible implementation manner, the method further includes: the plurality of red light FP light-transmitting layers which are arranged on one surface of the color pixel layer, which is far away from the plurality of blue light Micro LEDs, only allow red light to transmit, green light FP light-transmitting layers which only allow green light to transmit and a second blue light FP light-transmitting layer which only allows blue light to transmit; the red light FP euphotic layer, the green light FP euphotic layer and the second blue light FP euphotic layer respectively correspond to a red sub-pixel, a green sub-pixel and a blue sub-pixel of the Micro LED display device.

In the Micro LED display device, because one surface of the color pixel layer, which is far away from the blue Micro LEDs, is also provided with a plurality of red FP light transmitting layers which only allow red light to transmit, green FP light transmitting layers which only allow green light to transmit and a second blue FP light transmitting layer which only allows blue light to transmit, and the red FP light transmitting layers, the green FP light transmitting layers and the second blue FP light transmitting layers are respectively positioned in a red sub-pixel, a green sub-pixel and a blue sub-pixel of the Micro LED display device, the red sub-pixel can only emit red light, the green sub-pixel can only emit green light and the blue sub-pixel can only emit blue light, compared with the prior art, the problem of blue light leakage can be avoided.

In a possible implementation manner, the thickness of the filling layer of the red FP transparent layer is 775-787 nm;

The thickness of the filling layer of the green light FP transparent layer is 650-662 nm;

The thickness of the filling layer of the second blue light FP transparent layer is 562-600 nm.

In a possible implementation manner, the red FP transparent layer, the green FP transparent layer and the second blue FP transparent layer are disposed in the same layer.

in the Micro LED display device, the red light FP euphotic layer, the green light FP euphotic layer and the second blue light FP euphotic layer are arranged on the same layer, so that the process can be simplified, and the thickness of the Micro LED display device can be reduced.

drawings

FIG. 1 is a schematic diagram of a prior art Micro LED display device;

Fig. 2 is a schematic structural diagram of a Micro LED display device according to an embodiment of the present disclosure;

Fig. 3 is a schematic structural diagram of an FP transparent layer in a Micro LED display device provided in an embodiment of the present application;

Fig. 4 is a simulation diagram of the transmittance of the FP transparent layer provided in the embodiment of the present application;

fig. 5 is a schematic structural diagram of a Micro LED display device according to the second embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The Micro LED display device comprises a miniaturized LED array structure, has self-luminous display characteristics, and has the technical advantages of full solid state, long service life, high brightness, low power consumption, small volume, ultrahigh resolution, and applicability to extreme environments such as high temperature or radiation. Compared with the OLED technology which is self-luminous, the Micro LED has the advantages of high efficiency, long service life, relative stability due to the fact that the material is not easily influenced by the environment, and the phenomenon of ghost shadow can be avoided.

At present, in a Micro LED display device for color display, blue light Micro LEDs are used in combination with red and green light-emitting media to realize color display, generally, each sub-pixel of the Micro LED display device is correspondingly provided with one blue light Micro LED, the size of the blue light Micro LED is about 1-10 μm generally, and the divergence angle of the blue light Micro LED13 is relatively large, so that the emitted blue light can easily influence adjacent sub-pixels, and the color crosstalk between pixels is easily caused.

In order to reduce color crosstalk between pixels, the present application provides a Micro LED display device.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.