TWI782673B - Display pixel structure - Google Patents

Abstract

The present invention discloses a display pixel structure, which includes a first blue micro LED, a first transparent protection layer, a first transparent trapezoidal column structure, a plurality of color conversion films. The first transparent protection layer covers the first blue micro LED. The first transparent trapezoidal column structure has a top surface, a bottom surface, and a plurality of inclined surfaces. The bottom surface of the first transparent trapezoidal column structure is formed on the first transparent protection layer. The plurality of color conversion films are respectively formed on the plurality of inclined surfaces. The first blue micro LED emits first blue light. The first blue light passes through the first transparent protection layer and the first transparent trapezoidal column structure and emits from the top surface of the first transparent trapezoidal column structure. The color conversion films convert the first blue light into green light and red light and converges the light-emitting angles.

Description

Display pixel structure

The present invention relates to a display structure, and in particular to a display pixel structure.

Light-emitting diodes are regarded as a new generation of display technology, the overlord of the next generation of display technology. A large number of manufacturers at home and abroad are attacking one after another, and its market prospects are very promising. Light emitting diodes have a micron-level pitch, high brightness, low power consumption, ultra-high resolution and color saturation. The biggest advantage of light-emitting diodes comes from its biggest feature, each pixel can be addressed and controlled and single-point driven to emit light.

Micro-light-emitting diodes will have a qualitative improvement in image quality and are the next generation of revolutionary display technology, but the current technology is still not mature enough. For example, there are still many problems in the technical scheme of using red, green and blue chips. Due to the low yield rate of red chips, high cost and low tolerance of each chip to wavelength deviation, the cost is too high. At the same time, red, green and blue The aging mechanism of the three-color chip is inconsistent, and color shift is easy to occur during use. In addition, the light field type of micro-LEDs is mostly Lambertian distribution, and the range of light emitting angle is relatively large, resulting in low resolution and low color saturation.

Therefore, the present invention proposes a display pixel structure to solve the problems caused by the prior art.

The invention provides a display pixel structure, which converges the large light angle of micro-light-emitting diodes, and increases resolution and color saturation.

In one embodiment of the present invention, a display pixel structure includes a first blue micro-light emitting diode, a first transparent protective layer, a first transparent trapezoidal columnar structure and a plurality of color conversion films. The first transparent protective layer covers the first blue micro-light emitting diode, and the first transparent trapezoidal columnar structure has a first top surface, a first bottom surface and a plurality of holes connected between the first top surface and the first bottom surface. The first inclined surface and the first bottom surface of the first transparent trapezoidal columnar structure are arranged on the first transparent protection layer. All the color conversion films are respectively arranged on all the first inclined surfaces of the first transparent trapezoidal column structure. The first blue light emitting diode is used to emit the first blue light, and the first blue light is emitted from the first top surface of the first transparent trapezoidal columnar structure after passing through the first transparent protective layer and the first transparent trapezoidal columnar structure, and All color conversion films convert the first blue light into red and green light.

In one embodiment of the present invention, the light emission angle of the first blue light relative to the first top surface of the first transparent trapezoidal columnar structure is 20-50 degrees.

In one embodiment of the present invention, the light emitting angles of the red light and the green light relative to all the first inclined surfaces of the first transparent trapezoidal columnar structure are 35-45 degrees.

In one embodiment of the present invention, the color conversion film is a quantum dot film.

In one embodiment of the present invention, all the color conversion films include two blue-green conversion films and two blue-red conversion films, the number of all first inclined surfaces of the first transparent trapezoidal columnar structure is four, and the two blue The positions of the green conversion films are opposite to each other, and the positions of the two blue-red conversion films are opposite to each other.

In an embodiment of the present invention, the display pixel structure further includes a second blue light emitting diode, a second transparent protection layer, a second transparent trapezoidal columnar structure and a plurality of blue-green conversion films. The second transparent protective layer covers the second blue light micro-light emitting diode. The second transparent trapezoidal columnar structure has a second top surface, a second bottom surface and a plurality of second inclined surfaces connected between the second top surface and the second bottom surface. The second bottom surface of the second transparent trapezoidal columnar structure is arranged on the second transparent protective layer, wherein the second transparent trapezoidal columnar structure and the first transparent trapezoidal columnar structure are arranged in a straight line. All blue-green conversion films are respectively arranged on all second inclined surfaces and second top surfaces of the second transparent trapezoidal columnar structure. The second blue light emitting diode is used to emit second blue light. After the second blue light passes through the second transparent protective layer and the second transparent trapezoidal columnar structure, all the blue-green conversion films convert the second blue light into green light.

In one embodiment of the present invention, the blue-green conversion film is a quantum dot film.

In an embodiment of the present invention, the display pixel structure further includes a third blue light emitting diode, a third transparent protection layer and a third transparent trapezoidal columnar structure. The third transparent protective layer covers the third blue micro-light-emitting diode, and the third transparent trapezoidal columnar structure has a third top surface, a third bottom surface and a plurality of holes connected between the third top surface and the third bottom surface. A third inclined surface. The third bottom surface of the third transparent trapezoidal columnar structure is disposed on the third transparent protective layer, wherein the third transparent trapezoidal columnar structure, the second transparent trapezoidal columnar structure and the first transparent trapezoidal columnar structure are arranged in an L shape. The third blue light micro-light-emitting diode is used to emit the third blue light, and after the third blue light passes through the third transparent protective layer and the third transparent trapezoidal columnar structure, it passes through all the third inclined surfaces of the third transparent trapezoidal columnar structure and the third transparent trapezoidal columnar structure. Three top shots.

In an embodiment of the present invention, the display pixel structure further includes a fourth blue light emitting diode, a fourth transparent protection layer, a fourth transparent trapezoidal columnar structure and a plurality of blue-red conversion films. The fourth transparent protective layer covers the fourth blue micro-light-emitting diode, and the fourth transparent trapezoidal columnar structure has a fourth top surface, a fourth bottom surface and a plurality of holes connected between the fourth top surface and the fourth bottom surface. A fourth inclined surface. The fourth bottom surface of the fourth transparent trapezoidal columnar structure is set on the fourth transparent protective layer, wherein the fourth transparent trapezoidal columnar structure, the third transparent trapezoidal columnar structure, the second transparent trapezoidal columnar structure and the first transparent trapezoidal columnar structure The structures are arranged in a square matrix. All blue-red conversion films are respectively arranged on all fourth inclined surfaces and fourth top surfaces of the fourth transparent trapezoidal columnar structure. The fourth blue light emitting diode is used to emit fourth blue light. After the fourth blue light passes through the fourth transparent protective layer and the fourth transparent trapezoidal columnar structure, all the blue-red conversion films convert the fourth blue light into red light.

In one embodiment of the present invention, the blue-red conversion film is a quantum dot film.

Based on the above, the display pixel structure utilizes the transparent trapezoidal columnar structure to converge the large light emitting angle of the micro-light-emitting diode, and cooperates with the color conversion film to increase the resolution and color saturation.

In order to make your review committee members have a further understanding and understanding of the structural features and the achieved effects of the present invention, I would like to provide a better embodiment diagram and a detailed description, as follows:

Embodiments of the present invention will be further explained in conjunction with related figures below. Wherever possible, the same reference numerals have been used throughout the drawings and description to refer to the same or similar components. In the drawings, the shape and thickness may be exaggerated for the sake of simplification and convenient labeling. It should be understood that elements not particularly shown in the drawings or described in the specification are forms known to those skilled in the art. Those skilled in the art can make various changes and modifications according to the content of the present invention.

When an element is referred to as being "on", it can generally mean that the element is directly on other elements, or there may be other elements present in between. Conversely, when an element is referred to as being "directly on" another element, it cannot have the other element in between. As used herein, the word "and/or" includes any combination of one or more of the associated listed items.

The following descriptions of "one embodiment" or "an embodiment" refer to at least one specific element, structure or feature associated with one embodiment. Therefore, multiple descriptions of "one embodiment" or "an embodiment" appearing in various places below do not refer to the same embodiment. Furthermore, specific components, structures and features in one or more embodiments may be combined in an appropriate manner.

The disclosure is particularly described with the following examples, which are for illustration only, since various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the disclosure, and therefore this The scope of protection of the disclosed content shall be subject to the definition of the appended patent application scope. Throughout the specification and claims, the meanings of "a" and "the" include that such description includes "one or at least one" of the element or component, unless the content clearly specifies otherwise. Furthermore, as used in the present disclosure, singular articles also include descriptions of plural elements or components, unless it is obvious from the specific context that the plural is excluded. Also, as applied in this description and all claims below, the meaning of "in" may include "in" and "on" unless the content clearly dictates otherwise. The terms (terms) used throughout the specification and patent claims generally have the ordinary meaning of each term used in this field, in the content of this disclosure and in the specific content, unless otherwise specified. Certain terms used to describe the disclosure are discussed below or elsewhere in this specification to provide practitioners with additional guidance in describing the disclosure. The use of examples anywhere throughout the specification, including examples of any terms discussed herein, is for illustration only and certainly does not limit the scope and meaning of the disclosure or any exemplified term. Likewise, the present disclosure is not limited to the various embodiments presented in this specification.

It will be understood that the terms "comprising", "including", "having", "containing", "involving", etc. as used herein are open-ended The (open-ended) means including but not limited to. In addition, any embodiment or scope of claims of the present invention does not necessarily achieve all the objectives or advantages or features disclosed in the present invention. In addition, the abstract and title are only used to assist in the search of patent documents, and are not used to limit the scope of patent applications for inventions.

The terms "substantially", "around", "about" or "approximately" as used herein shall generally mean within 20% of a given value or range, Preferably within 10%. Furthermore, quantities provided herein may be approximate, thus meaning that the words "about", "about" or "approximately" may be used unless otherwise stated. When a quantity, concentration, or other value or parameter has a specified range, preferred range, or tabulated upper and lower ideal values, it shall be deemed to specifically disclose all ranges formed by any pair of upper and lower limits or ideal values, regardless of Whether the areas are disclosed separately. For example, if a certain length of the disclosed range is X centimeters to Y centimeters, it should be deemed that the disclosed length is H centimeters and H can be any real number between X and Y.

Unless otherwise specified, some conditional sentences or words, such as "can (can)", "maybe (could)", "maybe (might)", or "may" are usually intended to express that the embodiments of the present case have, However, it may also be interpreted as a feature, element, or step that may not be required. In other embodiments, these features, elements, or steps may not be required.

Micro-light-emitting diodes have the advantages of two major display technologies, liquid crystal displays and organic light-emitting diodes, and make up for their shortcomings. They are regarded as new-generation display technologies. Most of them are currently in the development stage. How to achieve mass production of their display technologies is a Big subject. The light field type of micro-light-emitting diodes is mostly Lambertian distribution, and additional matching is required for image displays, such as color conversion film, array lens or funnel-type array. The present invention adopts the blue light color conversion film, which is matched with the structural array, and has the advantages of converging the large-angle light output of the micro-light-emitting diodes, improving the resolution and color saturation, and the like. This kind of blue light color conversion film is made of quantum dot material that can release red and green spectrums. When it is irradiated with blue light, plus the original blue light, it can form three colors of red, green and blue with independent spectrum and extremely narrow bandwidth. Compared with the spectrum of white light-emitting diodes, blue light-emitting diodes with quantum dot film have absolutely excellent independent spectrum of red, green and blue. Photoexcited luminescence can be regarded as a new generation of quantum dots quantum dots, quantum dots absorb high-energy backlight sources, such as blue light, ultraviolet light, through the quantum dot internal energy level conversion into high-purity red or green light. Compared with traditional micron phosphors, such as the wide-peak color light produced by yellow YAG phosphors, the latter needs to filter out the variegated light other than red and green through color filters to meet the display requirements of red, green and blue primary colors. .

A display pixel structure of the present invention will be proposed below, which uses a transparent trapezoidal columnar structure to converge the large light emitting angle of the micro-light emitting diode, and cooperates with a color conversion film to increase resolution and color saturation.

FIG. 1 is a structural cross-sectional view of a display pixel structure according to an embodiment of the present invention. Fig. 2 is a structural top view of a display pixel structure according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 2, the display pixel structure 100 includes a first blue light emitting diode 110, a first transparent protective layer 111, a first transparent trapezoidal columnar structure 112 and a plurality of color conversion films 113. The material of the first transparent protective layer 111 can be transparent plastic materials such as ethylene vinyl acetate or polyethylene terephthalate, but the present invention is not limited thereto, and the ethylene vinyl acetate can be made by hot pressing. The material of the first transparent trapezoidal columnar structure 112 can be transparent materials such as polycarbonate, polymethyl methacrylate or BK7 glass, and adopt roll to roll (roll to roll) manufacturing process, but the present invention is not limited thereto. The first transparent protective layer 111 covers the first blue micro-light emitting diode 110, the first transparent trapezoidal columnar structure 112 has a first top surface, a first bottom surface and is connected between the first top surface and the first bottom surface A plurality of first inclined surfaces, the first bottom surface of the first transparent trapezoidal columnar structure 112 is disposed on the first transparent protective layer 111 .

All the color conversion films 113 are respectively disposed on all first inclined surfaces of the first transparent trapezoidal columnar structures 112 . The first blue light emitting diode 110 is used to emit the first blue light. After the first blue light passes through the first transparent protective layer 111 and the first transparent trapezoidal columnar structure 112 and all the color conversion films 113 convert the first blue light into red light and green light, so that the emitted first blue light, red light and green light form white light. Specifically, all the color conversion films 113 may include two blue-green conversion films 1130 and two blue-red conversion films 1131, the number of all first inclined surfaces of the first transparent trapezoidal columnar structure 112 is four, and the two blue-green conversion films 1131 are four. The positions of the green conversion films 1130 are opposite to each other, and the positions of the two blue-red conversion films 1131 are opposite to each other, but the present invention does not limit the positions of the two blue-green conversion films 1130 and the two blue-red conversion films 1131 . The blue-green conversion film 1130 is used to convert blue light into green light, and the blue-red conversion film 1131 is used to convert blue light into red light. In addition, all the color conversion films 113 can be quantum dot films, and the quantum dot films can be formed on all the first inclinations of the first transparent trapezoidal columnar structure 112 by spraying technology or three-dimensional bonding technology. On the surface. If the spraying technique is used, the quantum dot film can be directly sprayed on all the first inclined surfaces of the first transparent trapezoidal columnar structure 112 . If the three-dimensional lamination technology is used, the quantum dot film can be formed on a transparent adhesive film at a predetermined position first, and then the transparent adhesive film is attached to all the first inclined surfaces and the first transparent trapezoidal columnar structure 112. On a top surface, the quantum dot film is located on all first inclined surfaces of the first transparent trapezoidal columnar structure 112 . In a preferred embodiment, the first top surface and the first bottom surface of the first transparent trapezoidal columnar structure 112 can both be square, wherein the side length of the first top surface, the height of the first transparent trapezoidal columnar structure 112 and The ratio of the side lengths of the first bottom surface is substantially 1.8:3.5:4, but the invention is not limited thereto. In order to converge the large-angle light output of the first blue micro-light-emitting diode 110 to increase the resolution and color saturation, according to Snell's law, the first transparent trapezoidal columnar structure 112 can be designed so that the first blue light is opposite to the first transparent trapezoidal column The light emitting angle of the first top surface of the shape structure 112 is 20-50 degrees. Similarly, the angle of the first inclined surface of the first transparent trapezoidal columnar structure 112 can also be designed so that the light exit angles of the red light and green light relative to all the first inclined surfaces of the first transparent trapezoidal columnar structure 112 are 35-45° degrees, but the present invention is not limited to the above angles. The lines in the figure represent the light trajectories.

The display pixel structure 100 may further include a second blue light emitting diode 120 , a second transparent protective layer 121 , a second transparent trapezoidal columnar structure 122 and a plurality of blue-green conversion films 123 . The material of the second transparent protective layer 121 can be transparent plastic materials such as ethylene vinyl acetate or polyethylene terephthalate, but the present invention is not limited thereto, and the ethylene vinyl acetate can be made by hot pressing. The material of the second transparent trapezoidal columnar structure 122 can be transparent materials such as polycarbonate, polymethyl methacrylate or BK7 glass, and the roll-to-roll process is adopted, but the present invention is not limited thereto. The second transparent protective layer 121 covers the second blue micro light emitting diode 120 . The second transparent trapezoidal columnar structure 122 has a second top surface, a second bottom surface, and a plurality of second inclined surfaces connected between the second top surface and the second bottom surface. The second bottom surface of the second transparent trapezoidal columnar structure 122 is disposed on the second transparent protective layer 121 , wherein the second transparent trapezoidal columnar structure 122 and the first transparent trapezoidal columnar structure 112 can be arranged in a straight line.

All the blue-green conversion films 123 are respectively arranged on all the second transparent trapezoidal columnar structures 122 The second inclined surface and the second top surface. The second blue light emitting diode 120 is used to emit the second blue light. After the second blue light passes through the second transparent protective layer 121 and the second transparent trapezoidal columnar structure 122, all the blue-green conversion films 123 convert the second blue light into green light. . In addition, all the blue-green conversion films 123 can be quantum dot films, and the quantum dot films can be formed on all the second inclined surfaces and the second top surfaces of the second transparent trapezoidal columnar structures 122 by spraying technology or three-dimensional bonding technology. If the spraying technique is used, the quantum dot film can be directly sprayed on all the second inclined surfaces and the second top surface of the second transparent trapezoidal columnar structure 122 . If the three-dimensional bonding technology is adopted, the quantum dot film can be formed on a transparent adhesive film at a predetermined position first, and then the transparent adhesive film is attached to all the second inclined surfaces of the second transparent trapezoidal columnar structure 122 and the first transparent adhesive film. On the two top surfaces, the quantum dot film is located on all the second inclined surfaces and the second top surface of the second transparent trapezoidal columnar structure 122 . In a preferred embodiment, the second top surface and the second bottom surface of the second transparent trapezoidal columnar structure 122 can both be square, wherein the side length of the second top surface, the height of the second transparent trapezoidal columnar structure 122 and The ratio of the side lengths of the second bottom surface is substantially 1.8:3.5:4, but the invention is not limited thereto. In order to converge the large-angle light output of the second blue micro-light-emitting diode 120 to increase the resolution and color saturation, according to Snell's law, the second transparent trapezoidal columnar structure 122 can be designed so that the green light is opposite to the second transparent trapezoidal columnar structure. The light emitting angle of the second top surface of the structure 122 is 20-50 degrees. Similarly, the angle of the second inclined surface of the second transparent trapezoidal columnar structure 122 can also be designed so that the light exit angle of the green light relative to all second inclined surfaces of the second transparent trapezoidal columnar structure 122 is 35-45 degrees, but The present invention is not limited to the above angles. The lines in the figure represent the light trajectories.

The display pixel structure 100 may further include a third blue micro light emitting diode 130 , a third transparent protective layer 131 and a third transparent trapezoidal columnar structure 132 . The material of the third transparent protective layer 131 can be transparent plastic materials such as ethylene vinyl acetate or polyethylene terephthalate, but the present invention is not limited thereto, and the ethylene vinyl acetate can be made by hot pressing. The third transparent trapezoidal columnar structure 132 can be made of transparent materials such as polycarbonate, polymethyl methacrylate or BK7 glass, and the roll-to-roll process is adopted, but the present invention is not limited thereto. The third transparent protective layer 131 covers the third blue micro light emitting diode 130, and the third transparent trapezoidal columnar structure 132 has a third top surface, a third bottom surface and is connected to the third top surface and the third bottom. A plurality of third inclined surfaces between the faces. The third bottom surface of the third transparent trapezoidal columnar structure 132 is disposed on the third transparent protective layer 131, wherein the third transparent trapezoidal columnar structure 132, the second transparent trapezoidal columnar structure 122 and the first transparent trapezoidal columnar structure 112 form An L-shaped arrangement.

The third blue light emitting diode 130 is used to emit the third blue light. After the third blue light passes through the third transparent protective layer 131 and the third transparent trapezoidal columnar structure 132 The sloped surface and the third top surface project. In a preferred embodiment, the third top surface and the third bottom surface of the third transparent trapezoidal columnar structure 132 can both be square, wherein the side length of the third top surface, the height of the third transparent trapezoidal columnar structure 132 and The ratio of the side lengths of the third bottom surface is substantially 1.8:3.5:4, but the invention is not limited thereto. In order to converge the large-angle light emission of the third blue light emitting diode 130 to increase the resolution and color saturation, according to Snell's law, the third transparent trapezoidal columnar structure 132 can be designed so that the blue light is opposite to the third transparent trapezoidal columnar structure The light emitting angle of the third top surface of 132 is 20-50 degrees. Similarly, the angle of the third inclined surface of the third transparent trapezoidal columnar structure 132 can also be designed so that the light exit angle of the blue light relative to all the third inclined surfaces of the third transparent trapezoidal columnar structure 132 is 35-45 degrees, but this The invention is not limited to the above angles. The lines in the figure represent the light trajectories.

The display pixel structure 100 may further include a fourth blue light emitting diode 140 , a fourth transparent protective layer 141 , a fourth transparent trapezoidal columnar structure 142 and a plurality of blue-red conversion films 143 . The material of the fourth transparent protective layer 141 can be transparent plastic materials such as ethylene vinyl acetate or polyethylene terephthalate, but the present invention is not limited thereto, and the ethylene vinyl acetate can be made by hot pressing. The material of the fourth transparent trapezoidal columnar structure 142 can be transparent materials such as polycarbonate, polymethyl methacrylate or BK7 glass, and the roll-to-roll process is adopted, but the present invention is not limited thereto. The fourth transparent protective layer 141 covers the fourth blue micro light-emitting diode 140, and the fourth transparent trapezoidal columnar structure 142 has a fourth top surface, a fourth bottom surface and is connected between the fourth top surface and the fourth bottom surface. Multiple fourth inclined surfaces. The fourth bottom surface of the fourth transparent trapezoidal columnar structure 142 is disposed on the fourth transparent protective layer 141, wherein the fourth transparent trapezoidal columnar structure 142, the third transparent trapezoidal columnar structure 132, the second transparent trapezoidal columnar structure 122 and The first transparent trapezoidal columnar structure 112 are arranged in a square matrix.

All blue-red conversion films 143 are respectively disposed on all fourth inclined surfaces and fourth top surfaces of the fourth transparent trapezoidal columnar structure 142 . The fourth blue light micro-light emitting diode 140 is used to emit the fourth blue light. After the fourth blue light passes through the fourth transparent protective layer 141 and the fourth transparent trapezoidal columnar structure 142, all the blue-red conversion films 143 convert the fourth blue light into red light. . In addition, all the blue-red conversion films 143 can be quantum dot films, and the quantum dot films can be formed on all the fourth inclined surfaces and the fourth top surfaces of the fourth transparent trapezoidal columnar structures 142 by spraying technology or three-dimensional bonding technology. If the spraying technique is used, the quantum dot film can be directly sprayed on all the fourth inclined surfaces and the fourth top surface of the fourth transparent trapezoidal columnar structure 142 . If the three-dimensional bonding technique is adopted, the quantum dot film can be formed on a transparent adhesive film at a predetermined position first, and then the transparent adhesive film is attached to all the fourth inclined surfaces of the fourth transparent trapezoidal columnar structure 142 and the fourth transparent adhesive film. On the four top surfaces, the quantum dot film is located on all the fourth inclined surfaces and the fourth top surfaces of the fourth transparent trapezoidal columnar structure 142 . In a preferred embodiment, the fourth top surface and the fourth bottom surface of the fourth transparent trapezoidal columnar structure 142 can both be square, wherein the side length of the fourth top surface, the height of the fourth transparent trapezoidal columnar structure 142 and The ratio of the side lengths of the fourth bottom surface is substantially 1.8:3.5:4, but the invention is not limited thereto. In order to converge the large-angle light output of the fourth blue light emitting diode 140 to increase the resolution and color saturation, according to Snell's law, the fourth transparent trapezoidal columnar structure 142 can be designed so that the green light is opposite to the fourth transparent trapezoidal columnar structure. The light emitting angle of the fourth top surface of the structure 142 is 20-50 degrees. Similarly, the angle of the fourth inclined surface of the fourth transparent trapezoidal columnar structure 142 can also be designed so that the light exit angle of the red light relative to all fourth inclined surfaces of the fourth transparent trapezoidal columnar structure 142 is 35-45 degrees, but The present invention is not limited to the above angles. The lines in the figure represent the light trajectories.

If the structures corresponding to the first blue light micro-light emitting diode 110, the second blue light micro-light-emitting diode 120, the third blue light micro-light-emitting diode 130 and the fourth blue light micro-light-emitting diode 140 are respectively regarded as white light elements , green light element, blue light element and red light element, and these four elements are regarded as a complete pixel structure, and the color saturation can be improved by using this square array.

Figure 3 shows that the pixel structure of the three primary colors of the present invention is arranged in Pentile intention. Figure 4 is a schematic diagram of the pixel structure of the three primary colors of the present invention arranged in a diamond arrangement. Fig. 5 is a schematic diagram of the delta arrangement of the pixel structure of the three primary colors of the present invention. Please refer to FIG. 3, FIG. 4 and FIG. 5, wherein the red pixel 20, the green pixel 21 and the blue pixel 22 can respectively correspond to the above-mentioned red light element, green light element and blue light element, that is to say, The present invention does not limit the positions and sizes of the red light elements, green light elements, and blue light elements. The red light elements, green light elements, and blue light elements can be realized by the above-mentioned Pentile arrangement, diamond arrangement or Delta arrangement.

Fig. 6 is a luminance distribution diagram of the display pixel structure of the present invention. Please refer to FIG. 6. FIG. 6 shows the luminance distribution of multiple display pixel structures 100. It can be seen from the figure that the trapezoidal columnar structure can produce similar pixel functions, and make the luminance of the light-emitting diodes uniform, and Pixel structures lacking trapezoidal columnar structures are different.

According to the above-mentioned embodiment, the display pixel structure utilizes the transparent trapezoidal columnar structure to narrow the large light emitting angle of the micro-light emitting diode, and cooperates with the color conversion film to increase the resolution and color saturation.

The above is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention. Therefore, all equal changes and modifications are made according to the shape, structure, characteristics and spirit described in the patent scope of the present invention. , should be included in the patent application scope of the present invention.

100: Display pixel structure

110: The first blue micro light emitting diode

111: the first transparent protective layer

112: The first transparent trapezoidal columnar structure

113: Color conversion film

1130: blue-green conversion film

1131: blue red conversion film

120: the second blue micro light emitting diode

121: second transparent protective layer

122: The second transparent trapezoidal columnar structure

123: blue-green conversion film

130: The third blue micro light emitting diode

131: the third transparent protective layer

132: The third transparent trapezoidal columnar structure

133: Flexible printed circuit board

140: The fourth blue micro light emitting diode

141: the fourth transparent protective layer

142: The fourth transparent trapezoidal columnar structure

143: blue red conversion film

20: red pixel

21: Green pixel

22: blue pixel

Fig. 1 is a structural cross-sectional view of a display pixel structure corresponding to a first blue micro-light-emitting diode according to an embodiment of the present invention. Fig. 2 is a structural top view of a display pixel structure according to an embodiment of the present invention. Figure 3 is a schematic diagram of the pixel structure of the three primary colors in Pentile arrangement according to the present invention. Figure 4 is a schematic diagram of the pixel structure of the three primary colors of the present invention arranged in a diamond arrangement. Fig. 5 is a schematic diagram of the delta arrangement of the pixel structure of the three primary colors of the present invention. Fig. 6 is a luminance distribution diagram of the display pixel structure of the present invention.

100: Display pixel structure

110: The first blue micro light emitting diode

111: the first transparent protective layer

112: The first transparent trapezoidal columnar structure

113: Color conversion film

1130: blue-green conversion film

1131: blue red conversion film

120: the second blue micro light emitting diode

121: second transparent protective layer

122: The second transparent trapezoidal columnar structure

123: blue-green conversion film

130: The third blue micro light emitting diode

131: the third transparent protective layer

132: The third transparent trapezoidal columnar structure

133: Flexible printed circuit board

140: The fourth blue micro light emitting diode

141: the fourth transparent protective layer

142: The fourth transparent trapezoidal columnar structure

143: blue red conversion film

Claims (9)

A display pixel structure, comprising: a first blue light emitting diode; a first transparent protective layer covering the first blue light emitting diode; a first transparent trapezoidal columnar structure with a first a top surface, a first bottom surface and a plurality of first inclined surfaces connected between the first top surface and the first bottom surface, the first bottom surface of the first transparent trapezoidal columnar structure is set on the first transparent protection layer; and a plurality of color conversion films respectively arranged on the plurality of first inclined surfaces of the first transparent trapezoidal columnar structure, wherein the first blue light micro-light-emitting diode is used to emit first blue light, and the first blue light emitting diode A blue light is emitted from the first top surface of the first transparent trapezoidal columnar structure after passing through the first transparent protective layer and the first transparent trapezoidal columnar structure, and the plurality of color conversion films convert the first blue light into Red light and green light; wherein the light emission angle of the first blue light relative to the first top surface of the first transparent trapezoidal columnar structure is 20-50 degrees. The display pixel structure according to Claim 1, wherein the light emission angles of the red light and the green light relative to the plurality of first inclined surfaces of the first transparent trapezoidal columnar structure are 35-45 degrees. The display pixel structure according to Claim 1, wherein the plurality of color conversion films are quantum dot films. The display pixel structure as described in Claim 1, wherein the plurality of color conversion films include two blue-green conversion films and two blue-red conversion films, the plurality of first inclined surfaces of the first transparent trapezoidal columnar structure There are four in number, and the positions of the two blue-green conversion films are opposite to each other, and the positions of the two blue-red conversion films are opposite to each other. The display pixel structure described in claim 1 further includes: A second blue light micro-light emitting diode; a second transparent protective layer covering the second blue light micro-light emitting diode; a second transparent trapezoidal columnar structure with a second top surface, a second bottom surface and A plurality of second inclined surfaces connected between the second top surface and the second bottom surface, the second bottom surface of the second transparent trapezoidal columnar structure is provided on the second transparent protective layer, wherein the second transparent The trapezoidal columnar structure and the first transparent trapezoidal columnar structure are arranged in a straight line; and a plurality of blue-green conversion films are respectively arranged on the plurality of second inclined surfaces and the second top surface of the second transparent trapezoidal columnar structure above, wherein the second blue micro-light emitting diode is used to emit second blue light, and after the second blue light passes through the second transparent protective layer and the second transparent trapezoidal columnar structure, the plurality of blue-green conversion films convert the The second blue light is green light. The display pixel structure according to claim 5, wherein the blue-green conversion film is a quantum dot film. The display pixel structure as described in Claim 5, further comprising: a third blue light micro-light emitting diode; a third transparent protective layer covering the third blue light micro-light emitting diode; and a third transparent trapezoid The columnar structure has a third top surface, a third bottom surface and a plurality of third inclined surfaces connected between the third top surface and the third bottom surface, the third transparent trapezoidal columnar structure The bottom surface is arranged on the third transparent protective layer, wherein the third transparent trapezoidal columnar structure, the second transparent trapezoidal columnar structure and the first transparent trapezoidal columnar structure are arranged in an L shape, and the third blue light emits light Diodes are used to emit third blue light. After the third blue light passes through the third transparent protective layer and the third transparent trapezoidal columnar structure, it passes through the plurality of third inclined surfaces and the third transparent trapezoidal columnar structure. The third top surface shoots out. The display pixel structure as described in claim item 7 further includes: A fourth blue light micro-light emitting diode; a fourth transparent protective layer covering the fourth blue light micro-light emitting diode; a fourth transparent trapezoidal columnar structure with a fourth top surface, a fourth bottom surface and A plurality of fourth inclined surfaces connected between the fourth top surface and the fourth bottom surface, the fourth bottom surface of the fourth transparent trapezoidal columnar structure is provided on the fourth transparent protective layer, wherein the fourth transparent The trapezoidal columnar structure, the third transparent trapezoidal columnar structure, the second transparent trapezoidal columnar structure and the first transparent trapezoidal columnar structure are arranged in a square array; and a plurality of blue-red conversion films are respectively arranged on the fourth The plurality of fourth inclined surfaces and the fourth top surface of the transparent trapezoidal columnar structure, wherein the fourth blue light micro-light emitting diode is used to emit fourth blue light, and the fourth blue light passes through the fourth transparent protective layer and the fourth top surface After the fourth transparent trapezoidal columnar structure, the plurality of blue-red conversion films convert the fourth blue light into red light. The display pixel structure according to claim 8, wherein the blue-red conversion film is a quantum dot film.

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