阅读说明：本技术 基于MicroLED和荧光幕布的投影显示系统及显示方法 (Projection display system and display method based on MicroLED and fluorescent screen ) 是由 陶金 孙文超 朱立财 梁静秋 吕金光 秦余欣 王惟彪 于 2021-07-29 设计创作，主要内容包括：本发明提供一种基于MicroLED和荧光幕布的投影显示系统及显示方法,其中基于MicroLED和荧光幕布的投影显示系统包括：用于提供图像的MicroLED、用于将MicroLED发出的单色光转换为光学三原色以形成全彩色显示的荧光幕布、用于将MicroLED发出的图像投影到荧光幕布上的光学投影系统；本发明以单色MicroLED为光源,通过光学投影系统照射在荧光幕布上,荧光幕布将单色MicroLED转换成光学三原色,形成了全彩色投影显示；具有体积小、功耗低、能效高、响应快、亮度大且更环保的优点。(The invention provides a projection display system and a display method based on a MicroLED and a fluorescent curtain, wherein the projection display system based on the MicroLED and the fluorescent curtain comprises the following components: the system comprises a MicroLED for providing images, a fluorescent screen for converting monochromatic light emitted by the MicroLED into optical three primary colors to form full-color display, and an optical projection system for projecting the images emitted by the MicroLED onto the fluorescent screen; the invention uses the single-color MicroLED as a light source, and irradiates on the fluorescent screen through the optical projection system, and the fluorescent screen converts the single-color MicroLED into optical three primary colors to form full-color projection display; the LED lamp has the advantages of small volume, low power consumption, high energy efficiency, quick response, high brightness and environmental friendliness.)

1. A projection display system based on MicroLED and a fluorescent curtain, comprising: the system comprises a MicroLED for providing images, a fluorescent screen for converting monochromatic light emitted by the MicroLED into optical three primary colors to form full-color display, and an optical projection system for projecting the images emitted by the MicroLED onto the fluorescent screen;

the MicroLED is composed of a plurality of pixel units, and each pixel unit comprises three LEDs; the monochromatic light emitted by the MicroLED is blue light or purple light;

when monochromatic light emitted by the MicroLED is blue light, each fluorescent array comprises at least one green fluorescent area for converting the blue light into green light, at least one red fluorescent area for converting the blue light into red light and at least one reflecting area for reflecting the blue light; when monochromatic light emitted by the MicroLED is purple light, each fluorescent array comprises at least one green fluorescent area for converting the purple light into green light, at least one red fluorescent area for converting the purple light into red light and at least one blue fluorescent area for converting the purple light into blue light.

2. A projection display method based on blue micro led and fluorescent screen, which uses the projection display system based on micro led and fluorescent screen as claimed in claim 1, comprising the following steps:

a1, a plurality of LEDs in the MicroLEDs emitting blue light, and the optical projection system transmitting the blue light onto the fluorescent screen;

a2, a light reflecting region in a fluorescent array of the fluorescent curtain, reflecting the blue light; a red fluorescent area in the fluorescent array of the fluorescent curtain converts the blue light into red light and reflects the red light; and a green fluorescent area in the fluorescent array of the fluorescent curtain converts the blue light into green light and reflects the green light, and the red light, the green light and the blue light form full-color display.

3. A projection display method based on violet micro led and a fluorescent screen, which uses the projection display system based on micro led and a fluorescent screen as claimed in claim 1, characterized by comprising the following steps:

b1, a plurality of LEDs in the MicroLEDs emitting purple light, and the optical projection system transmitting the purple light to the fluorescent screen;

b2, a blue fluorescence area in the fluorescence array of the fluorescence curtain, converting the purple light into blue light and reflecting the blue light; a red fluorescent area in the fluorescent array of the fluorescent curtain converts the purple light into red light and reflects the red light; the green fluorescence area in the fluorescence array of fluorescence curtain will purple light converts green glow and reflection, red, green and blue three-color light form full-color display.

Technical Field

The invention relates to the field of projection display, in particular to a projection display system and a display method based on a MicroLED and a fluorescent curtain.

Background

The current mainstream household television adopts a liquid crystal panel display technology, although the price of the liquid crystal television is cheaper and cheaper, the volume and the mass of the liquid crystal television are larger, and the preparation process and the scrapping and destroying process of the liquid crystal television bring great pressure to the global ecological environment.

At present, compared with an LCD and an OLED, a display technology based on a MicroLED has the advantages of low power consumption, high energy efficiency, fast response, high brightness and the like, and is known as a next generation display technology. Compared with DLP and LCOS, the projection display system based on the MicroLED has the advantages of small volume and low power consumption. The micro LED projection display is used for replacing a liquid crystal display television, and the future ecological environment benefit is promoted.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a projection display system and a display method based on a MicroLED and a fluorescent curtain.

In order to achieve the purpose, the invention adopts the following specific technical scheme:

the invention provides a projection display system based on a MicroLED and a fluorescent curtain, which comprises: the system comprises a MicroLED for providing images, a fluorescent screen for converting monochromatic light emitted by the MicroLED into optical three primary colors to form full-color display, and an optical projection system for projecting the images emitted by the MicroLED onto the fluorescent screen;

the MicroLED is composed of a plurality of pixel units, and each pixel unit comprises three LEDs; monochromatic light emitted by the MicroLED is blue light or purple light;

when monochromatic light emitted by the MicroLED is blue light, each fluorescent array comprises at least one green fluorescent area for converting the blue light into green light, at least one red fluorescent area for converting the blue light into red light and at least one light reflecting area for reflecting the blue light; when monochromatic light emitted by the MicroLED is purple light, each fluorescent array comprises at least one green fluorescent area for converting the purple light into green light, at least one red fluorescent area for converting the purple light into red light and at least one blue fluorescent area for converting the purple light into blue light.

The invention provides a projection display method based on a blue light MicroLED and a fluorescent curtain, which comprises the following steps:

a1, emitting blue light by a plurality of LEDs in the MicroLEDs, and transmitting the blue light to the fluorescent screen by the optical projection system;

a2, a light reflecting area in the fluorescent array of the fluorescent curtain reflects blue light; a red fluorescent area in a fluorescent array of the fluorescent screen converts blue light into red light and reflects the red light; the green fluorescent area in the fluorescent array of the fluorescent screen converts the blue light into green light and reflects the green light, and the red light, the green light and the blue light form full-color display.

The invention provides a projection display method based on a purple light MicroLED and a fluorescent curtain, which comprises the following steps:

b1, emitting purple light by a plurality of LEDs in the MicroLEDs, and transmitting the purple light to the fluorescent screen by the optical projection system;

b2, converting purple light into blue light and reflecting the blue light by a blue fluorescent area in a fluorescent array of the fluorescent screen; a red fluorescent area in a fluorescent array of the fluorescent screen converts purple light into red light and reflects the red light; the green fluorescence area in the fluorescence array of the fluorescence curtain converts purple light into green light and reflects the green light, and red light, green light and blue light form full-color display.

The invention can obtain the following technical effects:

the invention uses the single-color MicroLED as a light source, and irradiates on the fluorescent screen through the optical projection system, and the fluorescent screen converts the single-color MicroLED into optical three primary colors to form full-color projection display; the LED lamp has the advantages of small volume, low power consumption, high energy efficiency, quick response, high brightness and environmental friendliness.

Drawings

FIG. 1 is a schematic diagram of the operating logic of a MicroLED and phosphor curtain based projection display system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a projection display system based on blue MicroLEDs and a phosphor curtain according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a projection display system based on violet MicroLEDs and a phosphor screen according to an embodiment of the present invention;

FIG. 4 is a flow chart of a projection display method based on blue MicroLEDs and a fluorescent screen according to an embodiment of the present invention;

fig. 5 is a flowchart of a projection display method based on violet micro leds and a fluorescent screen according to an embodiment of the present invention.

Wherein the reference numerals include: blue light MicroLED1, blue light LED101, blue light LED102, blue light LED103, optical projection system 2, fluorescent screen 3, reflective region 301, red fluorescent region 302, green fluorescent region 303, violet MicroLED4, violet LED401, violet LED402, violet LED403, optical projection system 5, fluorescent screen 6, blue fluorescent region 601, red fluorescent region 602, green fluorescent region 603.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same blocks. In the case of the same reference numerals, their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.

The following detailed description of the operation of the present invention is provided with reference to fig. 1 to 5:

as shown in fig. 1, fig. 2 and fig. 3, the present invention provides a projection display system based on micro leds (1 and 4) and fluorescent screens (3 and 6), comprising: the micro LED display device comprises micro LEDs (1 and 4) for providing images, fluorescent screens (3 and 6) for converting monochromatic light emitted by the micro LEDs (1 and 4) into optical three primary colors to form full-color display, and optical projection systems (2 and 5) for projecting the images emitted by the micro LEDs (1 and 4) onto the fluorescent screens (3 and 6);

the MicroLEDs (1 and 4) are composed of a plurality of pixel units, and each pixel unit comprises three LEDs; monochromatic light emitted by the MicroLEDs (1 and 4) is blue light or purple light;

the fluorescent screens (3 and 6) are composed of a plurality of fluorescent arrays, when monochromatic light emitted by the MicroLEDs (1 and 4) is blue light, each fluorescent array comprises at least one green fluorescent area 303 for converting the blue light into green light, at least one red fluorescent area 302 for converting the blue light into red light and at least one reflecting area 301 for reflecting the blue light; when the monochromatic light emitted by the micro leds (1 and 4) is purple light, each fluorescent array comprises at least one green fluorescent region 603 for converting purple light into green light, at least one red fluorescent region 602 for converting purple light into red light, and at least one blue fluorescent region 601 for converting purple light into blue light.

The materials of the fluorescent screens (3 and 6) adopt the materials of common commercial projection screens, and the fluorescent arrays are prepared at the positions needing to convert the color of the light. The fluorescent material for preparing the fluorescent array can be cadmium quantum dots, InP quantum dots, ZnSe quantum dots, PbS quantum dots, perovskite quantum dots, carbon quantum dots, water-soluble quantum dots and the like.

The optical projection systems (2 and 5) can enlarge, reduce or keep the patterns of the micro LEDs (1 and 4) unchanged according to actual use requirements.

As shown in fig. 4, the projection display method based on the blue light micro led1 and the fluorescent screen 3 provided by the invention comprises the following steps:

a1, a plurality of LEDs in the blue MicroLED1 emit blue light, and the optical projection system 2 transmits the blue light to the fluorescent curtain 3;

one pixel cell of the blue micro LED is shown in fig. 2, and includes three blue LEDs (101,102, and 103). The three blue LEDs (101,102 and 103) are independent from each other, wherein the blue LED101 correspondingly irradiates a light reflecting area 301 on one of the fluorescent arrays of the fluorescent curtain 3; the blue LED102 correspondingly illuminates a red fluorescent region 302 on one of the fluorescent arrays of the fluorescent screen 3; the blue LED103 correspondingly illuminates the green phosphor region 303 on one of the phosphor arrays of the phosphor screen 3.

A2, a light reflection area 301 in the fluorescent array of the fluorescent curtain 3 reflects the blue light emitted by the blue LED 101; a red fluorescent region 302 in the fluorescent array of the fluorescent screen 3 converts the blue light emitted by the blue LED102 into red light and reflects the red light; the green fluorescent region 303 in the fluorescent array of the fluorescent screen 3 converts the blue light emitted from the blue LED103 into green light and reflects the green light, and the red, green, and blue light forms a full color display.

In the fluorescent screen 3, a fluorescent array can improve the brightness of the display by corresponding to the pixel units in the blue micro leds 1.

As shown in fig. 5, the projection display method based on the violet micro led4 and the fluorescent screen 6 provided by the invention comprises the following steps:

b1, a plurality of LEDs in the purple micro LED4 emit purple light, and the purple light is transmitted to the fluorescent screen 6 by the optical projection system 5;

one pixel cell of the violet micro LED4 includes three violet LEDs (401,402, and 403) as shown in fig. 3. The three violet LEDs are independent of each other, wherein the violet LED401 correspondingly illuminates a blue fluorescent area 601 on one of the fluorescent arrays of the fluorescent screen 6; the violet LED402 correspondingly illuminates a red phosphor zone 602 on one of the phosphor arrays of the phosphor screen 6; the violet LED403 correspondingly illuminates a green phosphor field 603 on one of the phosphor arrays of the phosphor screen 6.

B2, a blue fluorescent area 601 in the fluorescent array of the fluorescent curtain 6, which converts the purple light emitted by the purple light LED401 into blue light and reflects the blue light; a red fluorescent region 602 in the fluorescent array of the fluorescent screen converts the violet light emitted by the violet LED402 into red light and reflects the red light; the green phosphor region 603 in the phosphor array of the phosphor screen converts the violet light emitted from the violet LED403 into green light and reflects the green light, and the red, green, and blue light forms a full color display.

A phosphor array in the phosphor screen 6 can increase the brightness of the display by corresponding pixel cells in the plurality of violet micro leds 4.

In summary, the invention provides a projection display system and a display method based on a micro led and a fluorescent curtain. The LED lamp has the advantages of small volume, low power consumption, high energy efficiency, quick response, high brightness and environmental friendliness.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be taken as limiting the invention. Variations, modifications, substitutions and alterations of the above-described embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.