TW202215411A - Scan needle and scan display system including same - Google Patents

Abstract

A scan needle includes a substrate, a first color light emitting pixel array comprising a plurality of first color light emitting pixels formed on the substrate, a second color light emitting pixel array comprising a plurality of second color light emitting pixels formed on the substrate, and a third color light emitting pixel array comprising a plurality of third color light emitting pixels formed on the substrate. The first color light emitting pixel array is parallel to the second color light emitting pixel array, and the second color light emitting pixel array is parallel to the third color light emitting pixel array.

Description

Scanning needle and scanning display system including the same

Cross-referencing of related applications

This application claims US Patent Application Serial No. 16/985,343, filed August 5, 2020, US Patent Application No. 16/985,341, filed August 5, 2020, US Patent Application No. 16/985,341, filed August 5, 2020 Application Serial No. 16/985,354, US Patent Application Serial No. 16/985,368, filed August 5, 2020, US Patent Application No. 16/985,372, filed August 5, 2020, and August 5, 2020 of U.S. Patent Application Serial No. 16/985,382 The above referenced applications are incorporated herein by reference in their entirety. Field of Invention

The present invention generally relates to display systems, and more particularly, to display systems including scan needles and display methods for display systems.

Background of the Invention

A light emitting diode (LED) is a semiconductor diode, which can convert electrical energy into light energy, and emit different lights with different colors according to the material of the light emitting layer included in the LED.

Conventional LED display panels are formed by assembling a plurality of LEDs on a substrate. In order to display an image in the display area of the conventional LED display panel, multiple LEDs need to be formed in the entire display area of the display panel, which may require complicated manufacturing processes and high manufacturing costs. Furthermore, conventional LED displays have high power consumption because they include a large number of LEDs.

Summary of Invention

According to one embodiment of the present invention, a scan needle is provided. The scan needle includes a substrate, a first color light emitting pixel array including a plurality of first color light emitting pixels formed on the substrate, a second color light emitting pixel array including a plurality of second color light emitting pixels formed on the substrate, and a A third color light emitting pixel array of a plurality of third color light emitting pixels on the substrate. The first color light emitting pixel array is parallel to the second color light emitting pixel array, and the second color light emitting pixel array is parallel to the third color light emitting pixel array.

Detailed description

Reference will now be made in detail to the present embodiment, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

According to an embodiment of the invention, the scan needle includes a plurality of light-emitting pixels for emitting light representing each of the plurality of image portions. The light emitted from the scanning needle is moved relative to the picture display screen at a predetermined frequency to continuously project the image portion on the picture display screen. As a result, the image formed by the image portion is displayed on the screen display screen.

FIG. 1 is a top view of a scan needle 100 according to an embodiment of the present invention. Referring to FIG. 1 , the scan needle 100 includes a substrate 102 , a first color light-emitting pixel array 110 including a plurality of first color light-emitting pixels 112 formed on the substrate 102 , and a plurality of second color light-emitting pixels 122 formed on the substrate 102 The second color light emitting pixel array 120 and the third color light emitting pixel array 130 including a plurality of third color light emitting pixels 132 formed on the substrate 102 . The first color light emitting pixel array 110 is parallel to the second color light emitting pixel array 120 , and the second color light emitting pixel array 120 is parallel to the third color light emitting pixel array 130 .

The X-axis direction shown in the figure is defined as the horizontal direction. The Y-axis direction perpendicular to the X-axis direction is defined as a vertical direction. The Z-axis direction is perpendicular to the X-axis direction and the Y-axis direction. In this disclosure, "horizontal direction" and "vertical direction" are used for convenience of explanation and are not intended to limit the particular orientation of any components described herein.

In the embodiment shown in FIG. 1 , each of the first color light emitting pixel array 110 , the second color light emitting pixel array 120 , and the third color light emitting pixel array 130 includes extending in the horizontal direction (X-axis direction) Pixels 112, 122, or 132 are formed in a single column of . The first color light emitting pixel array 110 , the second color light emitting pixel array 120 , and the third color light emitting pixel array 130 are sequentially arranged in the vertical direction (Y-axis direction).

The first color light emitting pixels 112 in the first color light emitting pixel array 110 emit light of a first color. The second color light emitting pixels 122 in the second color light emitting pixel array 120 emit light of the second color. The third color light emitting pixels 132 in the third color light emitting pixel array 130 emit light of a third color. The first color, the second color, and the third color are different from each other.

In the embodiment shown in FIG. 1 , the scan needle 100 further includes an optical isolation wall 150 formed on the substrate 102 . The light isolation wall 150 is disposed between the first color light emitting pixel array 110 and the second color light emitting pixel array 120 , and between the second color light emitting pixel array 120 and the third color light emitting pixel array 130 . The light isolation wall 150 may be formed of any non-transparent material, eg, non-transparent metal, to isolate light emitted from the first color light emitting pixel array 110 , the second color light emitting pixel array 120 , and the third color light emitting pixel array 130 .

The first color can be any color selected from red, green, blue, yellow, orange, and cyan, and is different from the second and third colors. The second color can be any color selected from green, blue, red, yellow, orange, and cyan, and is different from the first color and the third color. The third color can be any color selected from blue, red, green, yellow, orange, and cyan, and is different from the first color and the second color. In one embodiment, each of the first color-emitting pixels 112 includes a red-emitting pixel, each of the second color-emitting pixels 122 includes a blue-emitting pixel, and each of the third color-emitting pixels 132 includes a green-colored pixel Glowing pixels.

In some embodiments of the present invention, the first pitch p1 of the first color light emitting pixels 112 in the columns of the first color light emitting pixel array 110 (ie, the distance between the centers of two adjacent first color light emitting pixels 112 distance) less than 5 µm. The second pitch p2 of the second color light emitting pixels 122 in the columns of the second color light emitting pixel array 120 (ie, the distance between the centers of two adjacent second color light emitting pixels 122 ) is less than 5 μm. The third pitch of the third color light emitting pixels 132 in the columns of the third color light emitting pixel array 130 (ie, the distance between the centers of two adjacent third color light emitting pixels 132 ) is less than 5 μm. The first spacing s1 between the first color light-emitting pixel array 110 and the second color light-emitting pixel array 120 is less than 100 μm. The second spacing s2 between the second color light-emitting pixel array 120 and the third color light-emitting pixel array 130 is less than 100 μm.

In some embodiments of the present invention, the first color light emitting pixels 112 in the first color light emitting pixel array 110 are formed to have the same size and structure. The second color light emitting pixels 122 in the second color light emitting pixel array 120 are formed to have the same size and the same structure. The third color light emitting pixels 132 in the third color light emitting pixel array 130 are formed to have the same size and the same structure.

In the embodiment shown in FIG. 1 , the scan needle 100 includes all of the first color light-emitting pixel array 110 , the second color light-emitting pixel array 120 , and the third color light-emitting pixel array 130 . However, the present invention is not limited to this. In an alternative embodiment (not shown) of the present invention, the scan needle 100 may only include the first color light emitting pixel array 110 , the second color light emitting pixel array 120 , or the third color light emitting pixel array 130 formed on the substrate 102 one of them. Still in some alternative embodiments of the present invention (not shown), the scan needle 100 may include only two of the first color light emitting pixel array 110 , the second color light emitting pixel array 120 , and the third color light emitting pixel array 130 .

In the embodiment shown in FIG. 1 , the number of the first color light emitting pixels 112 in the first color light emitting pixel array 110 is the same as the number of the second color light emitting pixels 122 in the second color light emitting pixel array 120 . In addition, the number of the second color light emitting pixels 122 in the second color light emitting pixel array 120 is the same as the number of the third color light emitting pixels 132 in the third color light emitting pixel array 130 .

In the embodiment shown in FIG. 1, one of the first color light emitting pixel array 110, the second color light emitting pixel array 120, and the third color light emitting pixel array 130 is formed in a single column extending in the horizontal direction. of pixels 112, 122, or 132. However, the present invention is not limited to this. In some embodiments explained in further detail below, at least one of the first color light emitting pixel array 110, the second color light emitting pixel array 120, and the third color light emitting pixel array 130 may be included in at least two rows and two columns. of pixels formed in a two-dimensional array.

FIG. 2A is an enlarged top view of the area A of the scan needle 100 according to an embodiment of the present invention. Referring to FIG. 2A , the area A of the scanning needle 100 includes a first color light-emitting pixel 112_1 , a second color light-emitting pixel 122_1 , and a third color light-emitting pixel 132_1 . Each of the first color light emitting pixel 112_1, the second color light emitting pixel 122_1, and the third color light emitting pixel 132_1 is generally circular in plan view. The shape of a single light-emitting pixel is not limited to this. That is, the shape of a single light-emitting pixel may be a circle, a square, a rectangle, or the like.

The size of a single light-emitting pixel is in the range of 0.5 µm to 50 µm. In one embodiment, the diameters of each of the first color light emitting pixel 112_1, the second color light emitting pixel 122_1, and the third color light emitting pixel 132_1 are substantially the same, eg, 0.5 μm to 50 μm. However, the size of the three light-emitting pixels is not limited thereto. That is, the sizes of the three light-emitting pixels 112_2, 122_2, and 132_2 may be the same as each other, or may be different from each other.

FIG. 2B is an enlarged top view of the area A of the scan needle 100 according to another embodiment of the present invention. Referring to FIG. 2B , the area A of the scanning needle 100 includes a first color light-emitting pixel 112_2 , a second color light-emitting pixel 122_2 , and a third color light-emitting pixel 132_2 . Each of the first color light emitting pixel 112_2, the second color light emitting pixel 122_2, and the third color light emitting pixel 132_2 is roughly rectangular in plan view. The dimensions of the first color light emitting pixel 112_2 , the second color light emitting pixel 122_2 , and the third color light emitting pixel 132_2 along the horizontal (X-axis) direction are substantially the same, for example, 0.5 μm to 50 μm. The size of the first color light-emitting pixel 112_2 in the vertical (Y-axis) direction is, for example, 0.5 μm to 50 μm. The size of the second color light-emitting pixel 122_2 in the vertical direction is, for example, 0.5 μm to 50 μm. The size of the third color light-emitting pixel 132_2 in the vertical direction is, for example, 0.5 μm to 50 μm.

In one embodiment, the area of the first color light emitting pixel 112_2 is larger than that of the second color light emitting pixel 122_2 , and the area of the second color light emitting pixel 122_2 is larger than that of the third color light emitting pixel 132_2 . However, the area of the three light-emitting pixels is not limited to this. That is, the areas of the three light-emitting pixels 112_2, 122_2, and 132_2 may be the same as each other, or may be different from each other.

3A illustrates one configuration of scan needle 100, such as scan needle 100a shown in a cross-sectional view along section line BB' of FIG. 1, in accordance with one embodiment of the present invention. Referring to FIG. 3A , the scanning needle 100A includes a first color light emitting pixel 112_3A in a first color light emitting pixel array 110 , a second color light emitting pixel 122_3A in the second color light emitting pixel array 120 , and a third color light emitting pixel 122_3A in the second color light emitting pixel array 120 , which are arranged side by side on the substrate 102 . The third color light emitting pixel 132_3A in the color light emitting pixel array 130 . The first color light emitting pixel 112_3A includes a first color light emitting diode, and is referred to herein as the first color light emitting diode 112_3A. The second color light emitting pixel 122_3A includes a second color light emitting diode, and is referred to herein as the second color light emitting diode 122_3A. The third color light emitting pixel 132_3A includes a third color light emitting diode, and is referred to herein as the third color light emitting diode 132_3A.

Although FIG. 3A illustrates the first color light emitting diode 112_3A, the second color light emitting diode 122_3A, and the third color light emitting diode 132_3A as being arranged in the vertical (Y-axis) direction, the present invention is not limited thereto. In some alternative embodiments, the first color light emitting diode 112_3A, the second color light emitting diode 122_3A, and the third color light emitting diode 132_3A may be arranged in a horizontal (X-axis) direction.

As shown in FIG. 3A , the first color light emitting diode 112_3A includes at least a first segment 301_1 of the first metal layer and a first segment 302_1 of the first color light emitting layer (as seen in FIG. 3A , from bottom to top) order). The second color light emitting diode 122_3A at least includes a second segment 301_2 of the first metal layer, a second segment 302_2 of the first color light emitting layer, a first segment 303_1 of the second metal layer, and a first segment of the second color light emitting layer Segment 304_1 (as seen in FIG. 3A , in bottom-to-top order), and at least one first electrical connector 307 . The second segment 301_2 of the first metal layer and the first segment 303_1 of the second metal layer are electrically connected to each other by at least one first electrical connector 307 . The third color light emitting diode 132_3A at least includes a third segment 301_3 of the first metal layer, a third segment 302_3 of the first color light emitting layer, a second segment 303_2 of the second metal layer, and a second segment of the second color light emitting layer 304_2 , the third metal layer 305 and the third colored light emitting layer 306 (as seen in FIG. 3A , in order from bottom to top), and at least one second electrical connector 308 . The third segment 301_3 of the first metal layer, the second segment 303_2 of the second metal layer, and the third metal layer 305 are electrically connected to each other by at least one second electrical connector 308 .

The scanning needle 100A also includes an insulating layer 310 and a transparent conductive layer 320 covering the first color light emitting diode 112_3A, the second color light emitting diode 122_3A, and the third color light emitting diode 132_3A. The insulating layer 310 is formed with openings for exposing the first segment 302_1 of the first color light emitting layer, the first segment 304_1 of the second color light emitting layer, and a portion of the top surface of the third color light emitting layer 306 . The transparent conductive layer 320 covers the insulating layer 310 and is formed in the opening of the insulating layer 310, so as to contact the first segment 302_1 of the first color emitting layer, the first segment 304_1 of the second color emitting layer, and the third color emitting layer through the opening 306 exposed surface.

The scan needle 100 further includes light disposed between the first color LED 112_3A and the second color LED 122_3A, and between the second color LED 122_3 and the third color LED 132_3 Separation wall 350 . The height of the light isolation wall 350 may be greater than the highest one of the first color LEDs 112_3 , the second color LEDs 122_3 , and the third color LEDs 132_3 . In the embodiment shown in FIG. 3A , the height of the light isolation wall 350 is greater than the height of the third color light emitting diode 132_3.

In addition, the scanning needle 100 includes the first color light emitting diode 112_3A, the second color light emitting diode 122_3A, the third color light emitting diode 132_3A, the insulating layer 310 , the transparent conductive layer 320 , and the optical isolation wall 350 all covered. The transparent isolation layer 330. In addition, the microlenses 360 are formed on each of the first color LEDs 112_3A, the second color LEDs 122_3A, and the third color LEDs 132_3A.

The substrate 102 may be an integrated circuit (IC) substrate, which includes the first segment 301-1 of the first metal layer in the first color light emitting diode 112_3 and the second color light emitting diode 122_3. The second segment 301-2 of the first metal layer and the third segment 301_3 of the first metal layer in the third color light emitting diode 132_3 are electrically connected to the interconnection layer. Here, the IC substrate includes at least a driving circuit for separately controlling each of the first color light emitting diode 112_3A, the second color light emitting diode 122_3A, and the third color light emitting diode 132_3A.

3B illustrates another configuration of scan needle 100, such as scan needle 100B shown in a cross-sectional view along section line BB' of FIG. 1, according to another embodiment of the present invention. The elements of scan needle 100B are identical to those of scan needle 100A and are identified by the same reference numbers. As shown in FIG. 3B , the scanning needle 100B includes the first color light emitting diodes 112_3B in the first color light emitting pixel array 110 and the second color light emitting diodes in the second color light emitting pixel array 120 , which are arranged side by side on the substrate 102 . The polar body 122_3B and the third color light emitting diode 132_3B in the third color light emitting pixel array 130 .

The first color light emitting diode 112_3B includes at least the first segment 301_1 of the first metal layer and the first color light emitting layer 302 (as seen in FIG. 3B , in bottom-to-top order). The second colored light emitting diode 122_3B includes at least the second segment 301_2 of the first metal layer and the second colored light emitting layer 304 (as seen in FIG. 3B, in bottom-to-top order). The third colored light emitting diode 132_3B includes at least the third segment 301_3 of the first metal layer and the third colored light emitting layer 306 (as seen in FIG. 3B , in bottom-to-top order).

The scanning needle 100B also includes an insulating layer 310 and a transparent conductive layer 320 covering the first color light emitting diode 112_3B, the second color light emitting diode 122_3B, and the third color light emitting diode 132_3B. The insulating layer 310 is formed with openings exposing portions of the top surfaces of the first color light emitting layer 302 , the second color light emitting layer 304 , and the third color light emitting layer 306 . The transparent conductive layer 320 covers the insulating layer 310 and is formed in the opening of the insulating layer 310 to contact the exposed top surfaces of the first color light emitting layer 302, the second color light emitting layer 304, and the third color light emitting layer 306 through the opening.

The scan needle 100B further includes an optical isolation disposed between the first color LED 112_3B and the second color LED 122_3B, and between the second color LED 122_3B and the third color LED 132_3B wall 350. The height of the light isolation wall 350 may be greater than the highest of the first color LEDs 112_3B, the second color LEDs 122_3B, and the third color LEDs 132_3B. In the embodiment shown in FIG. 3B , the first color LEDs 112_3B, the second color LEDs 122_3B, and the third color LEDs 132_B3 have substantially the same height. Therefore, the height of the light isolation wall 350 is greater than all of the first color LEDs 112_3B, the second color LEDs 122_3B, and the third color LEDs 132_3B.

In addition, the scanning needle 100B includes the first color light emitting diode 112_3 , the second color light emitting diode 122_3 , the third color light emitting diode 132_3 , the insulating layer 310 , the transparent conductive layer 320 , and the optical isolation wall 350 all covered. The transparent isolation layer 330. In addition, the microlenses 360 are formed on each of the first color light emitting diode 112_3, the second color light emitting diode 122_3, and the third color light emitting diode 132_3.

Although FIGS. 3A and 3B illustrate two examples of light-emitting pixel structures, the present invention is not limited thereto. The first color light emitting pixel 112, the second color light emitting pixel 122, and the third color light emitting pixel 132 may be formed in any structure that can emit light of the first color, the second color, and the third color, respectively.

FIG. 4 is a top view of a scan needle 400 according to an embodiment of the present invention. Referring to FIG. 4 , the scan needle 400 includes a substrate 402 , a first color light-emitting pixel array 410 including a plurality of first color light-emitting pixels 412 formed on the substrate 402 , and a plurality of second color light-emitting pixels 422 formed on the substrate 402 The second color light emitting pixel array 420 and the third color light emitting pixel array 430 including a plurality of third color light emitting pixels 232 formed on the substrate 402. The first color light emitting pixel array 410 is parallel to the second color light emitting pixel array 420 , and the second color light emitting pixel array 420 is parallel to the third color light emitting pixel array 430 .

Each of the first color light emitting pixel array 410, the second color light emitting pixel array 420, and the third color light emitting pixel array 430 includes at least two columns extending in the horizontal direction and at least two rows extending in the vertical direction The pixels are formed in a two-dimensional array (ie, a matrix), as seen in Figure 4.

In the embodiment shown in FIG. 4 , the scan needle 400 further includes an optical isolation wall 450 formed on the substrate 402 . The light isolation wall 450 is disposed between the first color light emitting pixel array 410 and the second color light emitting pixel array 420 , and between the second color light emitting pixel array 420 and the third color light emitting pixel array 430 . The light isolation walls 450 may be formed of any non-transparent material (eg, non-transparent metal) to isolate light emitted from the first color light emitting pixel array 410 , the second color light emitting pixel array 420 , and the third color light emitting pixel array 430 .

In the embodiment shown in FIG. 4, each of the first color light emitting pixel array 410, the second color light emitting pixel array 420, and the third color light emitting pixel array 430 are 18×2 arrays, including each in the vertical direction 18 rows extending upward and 2 columns each extending horizontally. In some alternative embodiments of the present invention, each of the first color light emitting pixel array 410, the second color light emitting pixel array 420, and the third color light emitting pixel array 430 may be a 4000 x 50 array, including each in the vertical direction 4000 rows extending upward and 50 columns each extending horizontally.

In some embodiments of the present invention, the first pitch p1 of the first color light emitting pixels 412 in both the horizontal and vertical directions (ie, the distance between the centers of two adjacent first color light emitting pixels 412 ) less than 5 µm. The second pitch p2 of the second color light emitting pixels 422 in both the horizontal direction and the vertical direction (ie, the distance between the centers of two adjacent second color light emitting pixels 422 ) is less than 5 μm. The third pitch of the third color light emitting pixels 432 in both the horizontal direction and the vertical direction (ie, the distance between the centers of two adjacent third color light emitting pixels 432 ) is less than 5 μm. The first spacing s1 between the first color light-emitting pixel array 410 and the second color light-emitting pixel array 420 is less than 100 μm. The second spacing s2 between the second color light-emitting pixel array 420 and the third color light-emitting pixel array 430 is less than 100 μm.

The aspect ratio of a pixel array is defined herein as the ratio of the width of the pixel array (ie, the dimension of the longer side of the pixel array) to the length of the pixel array (ie, the dimension of the shorter side of the pixel array). According to some embodiments of the present invention, the aspect ratio of the first color light-emitting pixel array 410 is not less than 10:1. According to an alternative embodiment of the present invention, the aspect ratio of the first color light-emitting pixel array 410 is not less than 100:1.

In some embodiments of the present invention, the overall dimension of the scan needle 400 in the vertical direction does not exceed 1 mm. In some embodiments of the present invention, the overall aspect ratio of scan pins 400 is not less than 3:1.

In scan pins according to some embodiments of the present invention, at least one of the first color light emitting pixel array, the second color light emitting pixel array, and the third color light emitting pixel array may be formed as a single column, and the remaining first color light emitting pixel arrays At least one of the color light emitting pixel array, the second color light emitting pixel array, and the third color light emitting pixel array may be formed as a two-dimensional array. For example, a scan needle may include a first array of color light emitting pixels formed as a single column, and a second array of color light emitting pixels and a third array of color light emitting pixels each formed as a two-dimensional array.

In some embodiments, the total area of the first color light emitting pixel array 410 may be the same as the total area of the second color light emitting pixel array 420 , and the total area of the second color light emitting pixel array 420 may be the same as the third color light emitting pixel array 430 The total area is the same.

FIG. 5 is a schematic diagram illustrating a scanning display system 500 according to an embodiment of the present invention. Referring to FIG. 5 , the scanning display system 500 includes a picture receiving unit 510 , a scanning needle 520 , a picture display screen 530 having opposite first surfaces 531 and second surfaces 532 , and a driving unit 540 .

The frame receiving unit 510 is configured to receive frame data, and is coupled to a drive circuit of the scan pins 520 (eg, a drive circuit formed in the substrate 102 shown in FIG. 3 ) to send the frame data to the scan needles 520 the drive circuit. The scan needle 520 is configured to be driven by the driver circuit to emit light 550 representing each of the multiple parts of the image (hereinafter referred to as "image parts"), and to continuously project the light 550 representing the multiple image parts to the screen The first surface 531 of the display screen 530 is displayed. The picture display screen 530 is configured to receive the emitted light 550 on the first surface 531 and display the image portion on the second surface 532 . The driving unit 540 is coupled to the scanning needle 520 and is configured to perform a picture scanning process by moving the scanning needle 520, and scan in a vertical direction relative to the first surface 531 of the picture display screen 530 at a predetermined frequency, so as to be displayed on the picture display screen The plurality of image portions on the second surface 532 of the screen 530 are continuously arranged along the vertical direction of the screen display screen 530 . The predetermined frequency may not be less than 10 Hz. In other words, the time interval at which the image portion repeats at the position on the picture display screen 530 may be less than 0.1 s. Due to the phenomenon of persistence of vision (when the image seen by the human eye disappears, the human eye can continue to hold the image for about 0.1 s to 0.4 s), the image display screen 530 displays an image including a plurality of image parts on the second surface 532 .

6 illustrates the scan needle 520 and the picture display screen in the picture scanning process when viewed in the Z-axis direction from the front side of the picture display screen 530 and facing the second surface 532 of the picture display screen 530 according to an embodiment of the present invention 530. In order to facilitate the description of the relative positions of the scanning needle 520 and the picture display screen 530 , the picture display screen 530 is shown as transparent in FIG. 6 to display the scanning needle 520 disposed behind the picture display screen 530 .

As shown in FIG. 6 , the scan needle 520 includes a first color light-emitting pixel array 522 including a plurality of first color light-emitting pixels (not shown), a second color light-emitting pixel array 522 including a plurality of second color light-emitting pixels (not shown) The light emitting pixel array 524 and the third color light emitting pixel array 526 including a plurality of third color light emitting pixels (not shown). The first color light emitting pixel array 522 , the second color light emitting pixel array 524 , and the third color light emitting pixel array 526 are arranged in parallel with each other and in a vertical direction.

7 illustrates a frame display screen 530 with an image 700 displayed on the second surface 532 during a frame scan process, according to an embodiment of the present invention.

5 , 6 , and 7 , during the frame scanning process, the scanning needle 520 is driven by the driving unit 540 to move in the vertical direction relative to the first surface 531 of the frame display screen 530 . At the initial time point t1 during the frame scanning process, the scanning needle 520 is at the initial position, and the first image portion 710_1 is projected on the frame display screen 530 at the first and topmost positions. At the second time point t2, the scanning needle 520 moves downward in the vertical direction, and projects the second image portion 710_2 at a second position on the screen display screen 530 below the first position. The image portion 710_2 may be immediately adjacent to the image portion 710_1. Alternatively, the top portion of the image portion 710_2 may overlap the bottom portion of the image portion 710_1. At the third time point t3, the scanning needle 520 moves downward in the vertical direction, and projects the third image portion 710_3 at a third position on the screen display screen 530 below the second position. The image portion 710_3 may be immediately adjacent to the image portion 710_2. Alternatively, the top portion of the image portion 710_3 may overlap the bottom portion of the image portion 710_2. In this manner, the picture scanning process continues, with the scanning needle 520 continuously projecting image portions at successive time points, until the scanning needle 520 projects the final image portion 710 at the bottommost position of the picture display screen 530 . As a result, the complete image 700 formed by the image parts 710_1 , 710_2 , 710_3 , . . . , and 710_n is displayed on the frame display screen 530 . Then, the scanning needle 520 is moved back to the initial position by the driving unit 540, and then a series of updated image parts 710_1, 710_2, 710_3, . The scanning frequency of the scanning needle 520 is relatively high, so that the human eye will observe continuous images on the image display screen 530 .

FIG. 8 is a schematic diagram illustrating a scanning display system 800 according to an embodiment of the present invention. 8 , the scanning display system 800 includes a picture receiving unit 810 , a scanning needle 820 , a picture display screen 830 having opposite first and second surfaces 831 and 832 , a driving unit 840 , and a projection unit 850 .

The frame receiving unit 810 is configured to receive frame data, and is coupled to the scan needle to send the frame data to the scan needle 820 . Scan needle 820 is configured to continuously emit light 822 at successive points in time, representing each of a plurality of portions of the image (hereinafter "image portions"). The projection unit 850 may include a lens or a mirror, and is configured to continuously project the light 822 representing a plurality of image parts emitted from the scanning needle 820 to the first surface 831 of the picture display screen 830 . The picture display screen 830 is configured to receive the projected light 822 on the first surface 831 and display the image portion on the second surface 832 . The driving unit 840 is coupled to the projection unit 850 and is configured to perform a screen scanning process that redirects the light 822 projected from the projection unit 820 by moving a lens or mirror in the projection unit 850 so that the light 822 is The predetermined frequency moves in the vertical direction with respect to the first surface 831 of the picture display screen 830 . For example, the driving unit 840 may be configured to rotate or tilt a lens or mirror included in the projection unit 850 to redirect the light 822 emitted from the scanning needle 820 to different positions on the first surface 831 of the picture display screen Location. As a result, the picture display screen 830 displays an image including a plurality of image portions on the second surface 832 .

9 illustrates a frame display screen 830 having an image 900 displayed on a second surface 832 during a frame scan process, according to an embodiment of the present invention.

8 and 9 , during the frame scanning process, the projection unit 850 is driven by the driving unit 840 to scan the light 822 in the vertical direction with respect to the first surface 831 of the frame display screen 830 . At the initial time point t1 during the frame scanning process, the projection unit 850 is at the initial position to project the first image portion 910_1 at the first and topmost positions on the frame display screen 830 . The first image portion 910_1 is the light 822 emitted by the scanning needle 820 and represents the picture data projected by the projection unit 850 . At the second time point t2, the projection unit 850 is moved by the driving unit 840 to project the second image portion 910_2 on the screen display screen 830 at a second position below the first position, as seen in FIG. 9 . The image portion 910_2 may be immediately adjacent to the image portion 910_1. Alternatively, the top portion of the image portion 910_2 may overlap the bottom portion of the image portion 910_1. At the third time point t3, the projection unit 850 is moved by the driving unit 840 to project the third image portion 910_3 on the screen display screen 830 at a third position below the second position, as seen in FIG. 9 . The image portion 910_3 may be immediately adjacent to the image portion 910_2. Alternatively, the top portion of the image portion 910_3 may overlap the bottom portion of the image portion 910_2. In this way, the image scanning process continues, and the projection unit 850 continuously projects the image parts at successive time points until the projection unit 850 projects the final image part 910_n at the bottommost position on the image display screen 830 . As a result, the complete image 900 formed by the image parts 910_1 , 910_2 , 910_3 , . . . , and 910_n is displayed on the frame display screen 830 . Then, the projection unit 850 is moved to the initial position by the driving unit 840, and a series of updated image parts 910_1, 910_2, 910_3, .

10 illustrates the scan needle 1020 and the frame display screen 1030 when viewed along the Z-axis direction and facing the display screen 1030 during frame scanning processing according to an embodiment of the present invention. In order to facilitate the description of the relative positions of the scanning needle 1020 and the picture display screen 1030 , the picture display screen 1030 is shown as transparent in FIG. 10 to display the scanning needle 1020 disposed behind the picture display screen 1030 .

As shown in FIG. 10 , the scan needle 1020 includes a first color light-emitting pixel array 1022 including a plurality of first color light-emitting pixels (not shown), a second color light-emitting pixel array including a plurality of second color light-emitting pixels (not shown) The light emitting pixel array 1024 and the third color light emitting pixel array 1026 including a plurality of third color light emitting pixels (not shown). The first color light emitting pixel array 1022 , the second color light emitting pixel array 1024 , and the third color light emitting pixel array 1026 are parallel to each other and are sequentially arranged along the horizontal direction.

11 illustrates a frame display screen 1030 with an image 1100 displayed on a surface during a frame scan process, according to an embodiment of the invention.

10 and 11 , during the frame scanning process, the scanning needle 1020 may be driven by a driving unit (such as the driving unit 540 in FIG. 5 ) to move in a horizontal direction relative to the frame display screen 1030 . At the initial time point t1 during the frame scanning process, the scanning needle 1020 is at the initial position, and the first image portion 1110_1 is projected on the frame display screen 1030 at the first and leftmost positions. At the second time point t2, the scanning needle 1020 moves in the horizontal direction, and projects the second image portion 1110_2 on the screen display screen 1030 at a second position on the right side of the first position, as seen in FIG. 11 . The second image portion 1110_2 may be adjacent to the image portion 1110_1. Alternatively, the left portion of the image portion 1110_2 may overlap the right portion of the image portion 1110_1. At the third time point t3, the scanning needle 1020 moves further in the horizontal direction, and projects the third image portion 1110_3 at a third position on the screen display screen 1030 to the right of the second position, as seen in FIG. 11 . The image portion 1110_3 may be adjacent to the image portion 1110_2. Alternatively, the left portion of the image portion 1110_3 may overlap the right portion of the image portion 1110_2. In this way, the image scanning process continues, and the scanning needle 1020 continuously projects image portions at successive time points until the scanning needle 1020 projects the final image portion 1110 at the rightmost position on the image display screen 1030 . As a result, the complete image 1100 formed by the image parts 1110_1 , 1110_2 , 1110_3 , . . . , 1110_n is displayed on the frame display screen 1030 . Then, the scanning needle 1020 is moved back to the initial position, and a series of updated image portions 1110_1, 1110_2, 1110_3, . . . , 1110_n are projected on the frame display screen 1030 to display the updated images.

In some alternative embodiments of the present invention (not shown), a projection unit (such as the projection unit 850 in FIG. 8 ) may be used to project the light emitted from the scanning needle 1020 to the picture display screen 1030 , and the projection unit may be controlled by the driving unit (such as the driving unit 840 in FIG. 8 ) is driven to perform a picture scanning process to scan light in the horizontal direction with respect to the picture display screen 1030 . The picture scanning process may be similar to the picture scanning process described with respect to FIGS. 8 and 9 , except that the light emitted by the scan needle 1020 is scanned in the horizontal direction instead of the vertical direction in the current embodiment. Therefore, the detailed description of this alternative embodiment is not repeated.

In some alternative embodiments of the present invention (not shown), the scan needle may not be positioned horizontally or vertically relative to the picture display screen. On the contrary, one side of the scanning needle and one side of the image display screen may form an angle greater than 0 degrees and less than 90 degrees.

FIG. 12 illustrates the scan needle 1220 and the frame display screen 1230 when viewed along the Z-axis direction and facing the frame display screen 1230 during frame scan processing, according to an embodiment of the present invention. In order to facilitate the description of the relative positions of the scan needle 1220 and the picture display screen 1230 , the picture display screen 1230 is shown as transparent in FIG. 12 to display the scan needle 1220 disposed behind the picture display screen 1230 .

The scanning needle 1220 includes only one pixel, and the pixel includes at least one of the first color light emitting diode, the second color light emitting diode, and the third color light emitting diode. The aspect ratio of the pixels included in the scan needle 1220 is not less than 1:3. The size of the pixel in the horizontal direction is no larger than 50 μm, and may be in the range of 10 μm to 12 μm. The size of the pixel in the vertical direction is no larger than 50 μm, and may be in the range of 10 μm to 30 μm. In one embodiment, the dimensions of the individual light emitting diodes are in the range of 0.5 μm to 50 μm. The shape of the pixel is either a circle or a rectangle. In some embodiments, the pixel includes a red light emitting diode, a blue light emitting diode, and a green light emitting diode. The area of the red light-emitting diode is larger than that of the blue light-emitting diode, and the area of the blue light-emitting diode is larger than that of the green light-emitting diode.

13 illustrates a frame display screen 1230 having an image 1300 displayed thereon during a frame scan process, according to an embodiment of the present invention.

12 and 13 , during the frame scanning process, the scanning needle 1220 may be driven by a driving unit (such as the driving unit 540 in FIG. 5 ) to move in the horizontal and vertical directions relative to the frame display screen 1230 . At the initial time point t1 during the frame scanning process, the scanning needle 1220 is at the initial position, and the image portion 1310_1_1 is projected at the leftmost position in the first column on the frame display screen 1230 . At the second time point t2, the scanning needle 1220 moves in the horizontal direction, and projects the image portion 1310_1_2 on the screen display screen 1230 at a position to the right of the previous position. In this way, the frame scanning process continues until the scanning needle 1220 projects the image portion 1310_1_m at the upper right position on the frame display screen 1230 . Next, the scanning needle 1220 is moved back to the left in the horizontal direction, and moved downward in the vertical direction, so as to project the image portion 1310_2_1 on the leftmost part of the second column on the screen display screen 1230 . The driving unit continues to move the scanning needle 1220 to scan in the horizontal direction, thereby projecting the image parts 1310_2_2 , . The process continues until the scan needle 1220 projects the image portions 1310_n_1 , 1310_n_2 , . As a result, the complete image 1300 formed by the image parts 1310_1_1 , . . . , and 1310_n_m is displayed on the frame display screen 1230 . Then, the driving unit moves the scanning needle 1020 back to the initial position, and projects a series of updated image portions 1310_1_1 , . . . , and 1310_n_m on the frame display screen 1230 to display the updated images.

In an alternative embodiment (not shown) of the present invention, a projection unit (such as the projection unit 850 in FIG. 8 ) can be used to project the light emitted from the scanning needle 1220 to the picture display screen 1230 , and the projection unit can be controlled by the driving unit (such as the driving unit 840 in FIG. 8 ) is driven to perform a picture scanning process to scan light in the horizontal and vertical directions with respect to the picture display screen 1230 . The picture scanning process may be similar to that described with respect to FIGS. 8 and 9 , except that the light emitted by the scan needle 1220 is scanned in the horizontal and vertical directions instead of only the vertical direction in alternate embodiments. Therefore, the detailed description of this alternative embodiment is not repeated.

In the above-described embodiments of the invention, the scanning display system includes a scan needle that includes only three light-emitting pixel arrays, or even less than three light-emitting pixel arrays. The scanning needle has an area smaller than the total display area of the picture display screen. Thus, compared to conventional display systems that include light-emitting pixels formed over the entire display area, the scanning display system of embodiments of the present invention includes far fewer light-emitting pixels. As a result, the manufacturing process can be simplified, the manufacturing cost can be reduced, the power consumption can be reduced, and the package size can be reduced.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and specification of the invention disclosed herein. The specification and examples are to be regarded as illustrative only, with the true scope and spirit of the invention being indicated by the following claims.

100, 100A, 100B, 400, 520, 820, 1020, 1220: Scanning needle 102,402: Substrate 110, 410, 522, 1022: first color light-emitting pixel array 112, 112_1, 112_2, 112_3A, 412: the first color light-emitting pixel 112_3B: first color light-emitting diode 120, 420, 524, 1024: second color light-emitting pixel array 122, 122_1, 122_2, 122_3A, 422: The second color light-emitting pixel 122_3B: The second color light-emitting diode 130, 430, 526, 1026: Third Color Light Emitting Pixel Array 132, 132_1, 132_2, 132_3A, 432: The third color light-emitting pixel 132_3B: The third color light-emitting diode 150, 350, 450: Optical separation wall 301_1: The first segment of the first metal layer 301_2: The second segment of the first metal layer 301_3: The third segment of the first metal layer 302: The first colored light-emitting layer 302_1: The first segment of the first color light-emitting layer 302_2: The second segment of the first color light-emitting layer 302_3: The third segment of the first color light-emitting layer 304: Second Color Light Emitting Layer 304_1: The first segment of the second color light-emitting layer 304_2: The second segment of the second color light-emitting layer 305: Third metal layer 306: The third colored light-emitting layer 307: First electrical connector 308: Second electrical connector 310: Insulation layer 320: transparent conductive layer 330: Transparent isolation layer 360: Micro lens 500,800: Scan Display System 510,810: Picture receiving unit 530,830,1030,1230: Screen display screen 531,831: First Surface 532,832: Second Surface 540,840: Drive unit 550,822: Light 700, 900, 1100, 1300: Image 710_1, 910_1, 1110_1: The first image part 710_2, 910_2, 1110_2: Second image part 710_3, 910_3, 1110_3: The third video part 710_n, 1110_n: Image part 850: Projection unit 910_n: Final image part 1310_1_1, 1310_1_2, 1310_1_m: the image portion projected on the first column of the screen display screen 1230 1310_2_1, 1310_2_2, 1310_n_1: The part of the image projected on the second column of the screen display screen 1230 1310_n_2, 1310_n_m: the image portion projected on the bottom row of the screen display screen 1230 A: area B-B': hatch line p1: first pitch p2: second pitch p3: third pitch s1: first spacing s2: second spacing X, Y, Z: axis

FIG. 1 is a top view of a scan needle according to an embodiment of the present invention.

2A and 2B are enlarged top views of a region of the scan needle of FIG. 1 according to an embodiment of the present invention.

3A is a cross-sectional view of the scan needle along section line BB' of FIG. 1 according to an embodiment of the present invention.

3B is a cross-sectional view of the scan needle along section line BB' of FIG. 1 according to another embodiment of the present invention.

4 is a top view of a scan needle according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a scanning display system according to an embodiment of the present invention.

6 is a top view of a scan needle and a frame display screen during a frame scan process according to an embodiment of the present invention.

7 is a top view of a frame display screen with an image displayed thereon during frame scanning processing, according to an embodiment of the present invention.

8 is a schematic diagram illustrating a scanning display system according to an embodiment of the present invention.

9 is a top view of a frame display screen having an image displayed thereon during frame scanning processing, according to an embodiment of the present invention.

10 is a top view of a scan needle and a frame display screen during a frame scan process according to an embodiment of the present invention.

11 is a top view of a frame display screen with an image displayed thereon during frame scanning processing, according to an embodiment of the present invention.

12 is a top view of a scan needle and a frame display screen during frame scan processing according to an embodiment of the present invention.

13 is a top view of a frame display screen with an image displayed thereon during frame scanning processing, according to an embodiment of the present invention.

100: scan needle

102: Substrate

110: the first color light-emitting pixel array

112: The first color light-emitting pixel

120: The second color light-emitting pixel array

122: The second color light-emitting pixel

130: The third color light-emitting pixel array

132: The third color light-emitting pixel

150: Optical separation wall

A: area

B-B': hatch line

p1: first pitch

p2: second pitch

p3: third pitch

s1: first spacing

s2: second spacing

Claims (47)

A scan needle comprising, a substrate; a first color light-emitting pixel array, which includes a plurality of first color light-emitting pixels formed on the substrate; a second color light-emitting pixel array including a plurality of second color light-emitting pixels formed on the substrate; and a third color light-emitting pixel array including a plurality of third color light-emitting pixels formed on the substrate, Wherein, the first color light emitting pixel array is parallel to the second color light emitting pixel array, and the second color light emitting pixel array is parallel to the third color light emitting pixel array. The scan needle of claim 1, wherein: The plurality of first color light emitting pixels in the first color light emitting pixel array are formed in a single column or in a two-dimensional array having at least two columns and two rows; The plurality of second color light emitting pixels in the second color light emitting pixel array are formed in a single column or in a two-dimensional array having at least two columns and two rows; and The plurality of third color light emitting pixels in the third color light emitting pixel array are formed in a single column or in a two-dimensional array having at least two columns and two rows. The scan needle of claim 2, wherein: the first color light-emitting pixel array is a 4000×50 array; the second color light-emitting pixel array is a 4000×50 array; and The third color light-emitting pixel array is a 4000×50 array. The scan needle of claim 1, wherein: A pitch of the first color light emitting pixels in a column of the first color light emitting pixel array is less than 5 μm; A distance between the first color light-emitting pixel array and the second color light-emitting pixel array is less than 100 μm; A pitch of the second color light emitting pixels in a column of the second color light emitting pixel array is less than 5 μm; A distance between the second color light-emitting pixel array and the third color light-emitting pixel array is less than 100 μm; and A pitch of the third color light emitting pixels in a column of the third color light emitting pixel array is less than 5 μm. The scan needle of claim 1, wherein: An aspect ratio of the first color light-emitting pixel array is not less than 10:1; A size of one of the first color light emitting pixels in a column direction of the first color light emitting pixel array and one of the second color light emitting pixels in a column direction of the second color light emitting pixel array of the same size; and The size of the one of the second color light emitting pixels in the column direction of the second color light emitting pixel array and one of the third color light emitting pixels in a column direction of the third color light emitting pixel array are the same size. The scan needle of claim 5, wherein the aspect ratio of the first color light-emitting pixel array is not less than 100:1. The scan needle of claim 1, wherein: each of the first color light emitting pixels includes a first color light emitting diode; each of the second color light emitting pixels includes a second color light emitting diode; and Each of the third color light emitting pixels includes a third color light emitting diode. The scan needle of claim 1, wherein one of the scan needles has a total width of no greater than 1 mm. The scan needle of claim 8, wherein a total aspect ratio of one of the scan needles is not less than 3:1. The scan needle of claim 1, wherein: A number of the first color light emitting pixels in the first color light emitting pixel array is the same as a number of the second color light emitting pixels in the second color light emitting pixel array; and The number of the second color light emitting pixels in the second color light emitting pixel array is the same as the number of the third color light emitting pixels in the third color light emitting pixel array. The scan needle of claim 1, wherein a shape of each of the first color light-emitting pixels, the second color light-emitting pixels, and the third color light-emitting pixels is a circle or a rectangle. The scan needle of claim 1, wherein: each of the first color light-emitting pixels includes a red light-emitting pixel; each of the second color light-emitting pixels includes a blue light-emitting pixel; and Each of the third color light-emitting pixels includes a green light-emitting pixel. The scan needle of claim 12, wherein: An area of one of the first color emitting pixels is larger than an area of one of the second color emitting pixels; and An area of one of the second color light emitting pixels is larger than an area of one of the third color light emitting pixels. The scan needle of claim 1, further comprising: A plurality of light isolation walls are formed on the substrate between the first color light emitting pixel array and the second color light emitting pixel array, and between the second color light emitting pixel array and the third color light emitting pixel array. The scan needle as claimed in claim 14, wherein a height of the optical isolation walls is greater than the highest of the first color light-emitting pixels, the second color light-emitting pixels, and the third color light-emitting pixels a height. The scan needle of claim 1, wherein an area of one of the first color light-emitting pixels is the same as an area of one of the second color light-emitting pixels, and The area of one of the second color light emitting pixels is the same as an area of one of the third color light emitting pixels. The scan needle of claim 1, wherein: An area of one of the first color emitting pixels is larger than an area of one of the second color emitting pixels; and The area of one of the second light-emitting pixels is larger than an area of one of the third light-emitting pixels. The scan needle of claim 1, wherein: One of the first color light-emitting pixels includes a first segment of a first color light-emitting layer formed on the substrate; One of the second color light emitting pixels includes a second segment of the first color light emitting layer formed on the substrate and a second color light emitting layer formed over the second segment of the first color light emitting layer the first paragraph of one of the layers; and One of the third color light emitting pixels includes a third segment of the first color light emitting layer formed on the substrate, the second color light emitting layer formed over the third segment of the first color light emitting layer a second section of the layer, and a third color light emitting layer formed over the second section of the second color light emitting layer. The scan needle of claim 1, wherein: One of the first color light-emitting pixels includes a first color light-emitting layer formed on the substrate; One of the second color light-emitting pixels includes a second color light-emitting layer formed on the substrate; and One of the third color light emitting pixels includes a third color light emitting layer formed on the substrate. The scan needle of claim 1, further comprising: A plurality of microlenses are respectively formed on at least one of the first color light emitting pixels, the second color light emitting pixels, and the third color light emitting pixels. A scanning display system comprising: A picture receiving unit; a scanning needle; a picture display screen having opposite first and second surfaces; and a drive unit, in: The picture receiving unit is configured to receive picture data and is coupled to the scan needle to send the picture data to the scan needle, The driving unit is coupled to the scan needle and configured to perform an image scanning process by moving the scan needle to scan at a predetermined frequency in a vertical direction relative to the first surface of the image display screen, The scan needle is configured to emit light representing the picture data to the first surface of the picture display screen to project a plurality of image lines, each image line being projected by the scan needle during the scan, and The picture display screen is configured to receive the emitted light on the first surface and display an image including the image lines on the second surface. The scanning display system of claim 21, wherein the scan needle comprises the scan needle of any one of claims 1-20. A scanning display system comprising: an image receiving unit; a scanning needle; a picture display screen, which has opposite first surface and second surface; a projection unit; and a drive unit, in: The picture receiving unit is configured to receive picture data and is coupled to the scan needle to send the picture data to the scan needle, the scanning needle is configured to emit light representing the picture data, The projection unit is configured to project the light emitted from the scanning needle onto the first surface of the picture display screen, The driving unit is coupled to the projection unit and configured to perform an image scanning process by moving the projection unit relative to the first surface of the image display screen in a vertical direction A predetermined frequency scans the light projected from the projection unit to form a plurality of image lines, and The picture display screen is configured to receive the projected light on the first surface and display an image including the image lines on the second surface. The scanning display system of claim 23, wherein the scan needle comprises the scan needle of any one of claims 1-20. A scanning display system comprising: an image receiving unit; a scanning needle; a picture display screen having opposite first and second surfaces; and a drive unit, in: The picture receiving unit is configured to receive picture data and coupled to the scan needle, so as to send the picture data to the scan needle; The driving unit is coupled to the scanning needle, and is configured to perform an image scanning process by moving the scanning needle to scan at a predetermined frequency in a horizontal direction relative to the first surface of the image display screen; The scan needle is configured to emit light representing the picture data to the first surface of the picture display screen to project a plurality of image lines, each image line formed by the scan needle during the scan, and The picture display screen is configured to receive the emitted light on the first surface and display an image including the image lines on the second surface. The scanning display system of claim 25, wherein the scan needle comprises the scan needle of any one of claims 1-20. A scanning display system comprising: an image receiving unit; a scanning needle; a picture display screen having opposite first and second surfaces; and a drive unit, in: The picture receiving unit is configured to receive picture data and is coupled to the scan needle to send the picture data to the scan needle, The driving unit is coupled to the scan needle, and is configured to perform a scan at a predetermined frequency in a horizontal direction and a vertical direction relative to the first surface of the image display screen by moving the scan needle image scanning, the scan needle is configured to emit light representing the picture data onto the first surface of the picture display screen to project a plurality of image portions, each image portion formed by the scan needle during the scan; and The picture display screen is configured to receive the emitted light on the first surface and display an image including the image portions on the second surface. The scanning display system of claim 27, wherein the scanning needle includes only one pixel, the pixel including at least one color light emitting diode. The scanning display system of claim 28, wherein an aspect ratio of the pixels is not less than 1:3. The scanning display system of claim 28, wherein a dimension of the pixel in the horizontal direction is no greater than 12 μm, and a dimension of the pixel in the vertical direction is no greater than 30 μm. The scanning display system of claim 30, wherein the size of the pixel in the horizontal direction is 10-12 μm, and the size of the pixel in the vertical direction is 10 μm-30 μm. The scanning display system of claim 28, wherein the pixel comprises at least one red light emitting diode, at least one blue light emitting diode, and/or at least one green light emitting diode. The scanning display system of claim 28, wherein one of the pixels is circular or rectangular in shape. The scanning display system of claim 28, wherein the pixel comprises a red light-emitting diode, a blue light-emitting diode, and a green light-emitting diode, the red light-emitting diode is larger than the blue light-emitting diode, and The blue light emitting diode is larger than the green light emitting diode. The scanning display system of claim 28, wherein the pixel comprises a first color light emitting diode, a second color light emitting diode, or a third color light emitting diode. The scanning display system of claim 28, wherein the pixel comprises a first color light emitting diode, a second color light emitting diode, and a third color light emitting diode. The scanning display system of claim 36, wherein an area of the first color light emitting diode is the same as an area of the second color light emitting diode, and The area of the second color light emitting diode is the same as an area of the third color light emitting diode. The scanning display system of claim 36, wherein an area of the first color light emitting diode is larger than an area of the second color light emitting diode, and The area of the second color light emitting diode is larger than an area of the third color light emitting diode. The scanning display system of claim 36, wherein the scanning needle further comprises: formed on a substrate and between the first color light-emitting diode and the second color light-emitting diode, and between the second color light-emitting diode and the third color light-emitting diode Optical separation wall. The scanning display system of claim 39, wherein a height of the light isolation walls is greater than one of the first color light emitting diode, the second color light emitting diode, and the third color light emitting diode One of the tallest heights. The scanning display system of claim 36, wherein: the first color light emitting diode includes a first segment of a first color light emitting layer formed on a substrate; The second color light emitting diode includes a second segment of the first color light emitting layer formed on the substrate, and a second color light emitting layer formed over the second segment of the first color light emitting layer. a first paragraph; and The third color light emitting diode includes a third segment of the first color light emitting layer formed on the substrate, and one of the second color light emitting layers formed above the third segment of the first color light emitting layer The second segment, and a third color light emitting layer formed above the second segment of the second color light emitting layer. The scanning display system of claim 41, wherein: A height of the first color light emitting diode is smaller than a height of the second color light emitting diode; and The height of the second color light emitting diode is smaller than a height of the third color light emitting diode. The scanning display system of claim 36, wherein: The first color light emitting diode includes a first color light emitting layer formed on a substrate; The second color light emitting diode includes a second color light emitting layer formed on the substrate; and The third color light emitting diode includes a third color light emitting layer formed on the substrate. The scanning display system of claim 36, wherein the scanning needle further comprises: A plurality of microlenses are respectively formed on at least one of the first color light emitting diode, the second color light emitting diode, and the third color light emitting diode. The scanning display system of claim 28, wherein the scanning needle further comprises: A microlens is formed on the pixel. A scanning display system comprising: an image receiving unit; a scanning needle; a picture display screen having opposite first and second surfaces; and a drive unit, in: The picture receiving unit is configured to receive picture data and is coupled to the scan needle to send the picture data to the scan needle, The driving unit is coupled to the scan needle, and is configured to perform a scan at a predetermined frequency in a horizontal direction and a vertical direction relative to the first surface of the image display screen by moving the scan needle image scanning, The scan needle is configured to emit light representing the picture data onto the first surface of the picture display screen to project a plurality of image portions, each image portion formed by the scan needle during the scan, The picture display screen is configured to receive the emitted light on the first surface and display an image including the image portions on the second surface, Wherein the scanning needle includes: a substrate; a first color light-emitting pixel array, which includes a plurality of first color light-emitting pixels; a second color light-emitting pixel array including a plurality of second color light-emitting pixels; and a third color light-emitting pixel array including a plurality of third color light-emitting pixels, Wherein, the first color light-emitting pixel array is parallel to the second color light-emitting pixel array, and the second color light-emitting pixel array is parallel to the third color light-emitting pixel array, and The first color light emitting pixel array, the second color light emitting pixel array, and the third color light emitting pixel array extend in the horizontal direction. The scanning display system of claim 46, wherein the scan needle comprises the scan needle of any one of claims 2-20.

Images