# US 11,308,862 B2 · Scan needle and scan display system including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,308,862 B2 - Document ID: US11308862B2 - Status: Granted - Kind: B2 - Application number: 16/985,341 - Filed: 2020-08-05 - Published: 2022-02-10 - Granted: 2022-04-19 - Earliest claimed: 2020-08-05 - Assignees: Jade Bird Display (Shanghai) Limited - Applicants: Jade Bird Display (Shanghai) Limited - Inventors: Qunchao Xu; Qiming Li - Web page: https://patentgrep.com/patent/US11308862B2 ## CPC - G09G 3/002: {to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/005: {forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation} - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - H10H 20/813: having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within the bodies - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2310/02: Addressing, scanning or driving the display screen or processing steps related thereto - G09G 2310/024: Scrolling of light from the illumination source over the display in combination with the scanning of the display screen - H10W 90/00: Package configurations - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A scan display system includes a picture receiving unit, a scan needle, a picture display screen having first and second opposing surfaces, and a driving unit. The picture receiving unit is configured to receive picture data and transmit the picture data to the scan needle. The driving unit is configured to perform a picture scanning process by moving the scan needle to scan in a vertical direction relative to the first surface of the picture display screen at a predetermined frequency. The scan needle is configured to emit light, representative of the picture data, to the first surface of the picture display screen to project image lines, each image line being projected 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 comprising the image lines on the second surface. ## Claims ### Claim 1 A scan display system, comprising: a picture receiving unit; a scan needle; a picture display screen having first and second opposing surfaces; and a driving unit, wherein: the picture receiving unit is configured to receive picture data and coupled to the scan needle to transmit the picture data to the scan needle, the driving unit is coupled to the scan needle and configured to perform a picture scanning process by moving the scan needle to scan in a vertical direction relative to the first surface of the picture display screen at a predetermined frequency, the scan needle is configured to emit light, representative of the picture data, to the first surface of the picture display screen to project 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 comprising the image lines on the second surface; wherein the 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 diode pixel array comprising a plurality of third color light emitting pixels formed on the substrate, the first color light emitting pixel array being parallel to the second color light emitting pixel array, and the second color light emitting pixel array being parallel to the third color light emitting pixel array, 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 first segment of a second color light emitting layer formed over the second segment of the first color light emitting layer; and one of the third color light emitting pixels includes a third segment of the first color light emitting layer formed on the substrate, a second segment of the second color light emitting layer formed over the third segment of the first color light emitting layer, and a third color light emitting layer formed over the second segment of the second color light emitting layer. ### Claim 2 (depends on 1) The scan display system according to claim 1, wherein: the plurality of first color light emitting pixels in the first color light emitting pixel array are formed in a single row or in a two-dimensional array having at least two rows and two columns; the plurality of second color light emitting pixels in the second color light emitting pixel array are formed in a single row or in a two-dimensional array having at least two rows and two columns; and the plurality of third color light emitting pixels in the third color light emitting pixel array are formed in a single row or in a two-dimensional array having at least two rows and two columns. ### Claim 3 (depends on 2) The scan display system according to 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. ### Claim 4 (depends on 1) The scan display system according to claim 1, wherein: a pitch of the first color light emitting pixels in a row of the first color light emitting pixel array is less than 5 μm; a spacing 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 row of the second color light emitting pixel array is less than 5 μm; a spacing 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 row of the third color light emitting pixel array is less than 5 μm. ### Claim 5 (depends on 1) The scan display system according to 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 row direction of the first color light emitting pixel array is same as a size of one of the second color light emitting pixels in a row direction of the second color light emitting pixel array; and the size of the one of the second color light emitting pixels in the row direction of the second color light emitting pixel array is same as a size of one of the third color light emitting pixels in a row direction of the third color light emitting pixel array. ### Claim 6 (depends on 5) The scan display system according to claim 5, wherein the aspect ratio of the first color light emitting pixel array is not less than 100:1. ### Claim 7 (depends on 1) The scan display system according to claim 1, wherein: each of the first color light emitting pixels comprises a first color light emitting diode; each of the second color light emitting pixels comprises a second color light emitting diode; and each of the third color light emitting pixels comprises a third color light emitting diode. ### Claim 8 (depends on 1) The scan display system according to claim 1, wherein a total width of the scan needle is not more than 1 mm. ### Claim 9 (depends on 8) The scan display system according to claim 8, wherein a total aspect ratio of the scan needle is not less than 3:1. ### Claim 10 (depends on 1) The scan display system according to 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 a number of the third color light emitting pixels in the third color light emitting pixel array. ### Claim 11 (depends on 1) The scan display system according to 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 circular or rectangular. ### Claim 12 (depends on 1) The scan display system according to claim 1, wherein: each of the first color light emitting pixels comprises a red light emitting pixel; each of the second color light emitting pixels comprises a blue light emitting pixel; and each of the third color light emitting pixels comprises a green light emitting pixel. ### Claim 13 (depends on 12) The scan display system according to claim 12, wherein: an area of one of the first color light emitting pixels is larger than an area of one of the second color light emitting pixels; and an area of the one of the second light emitting pixels is larger an area of one of the third light emitting pixels. ### Claim 14 (depends on 1) The scan display system according to claim 1, wherein the scan needle further includes: light-isolating walls formed on the substrate and 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. ### Claim 15 (depends on 14) The scan display system according to claim 14, wherein a height of the light-isolating walls is greater than a height of the highest one of the first color light emitting pixels, the second color light emitting pixels, and the third color light emitting pixels. ### Claim 16 (depends on 1) The scan display system according to 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. ### Claim 17 (depends on 1) The scan display system according to claim 1, wherein: an area of one of the first color light emitting pixels is larger than an area of one of the second color light emitting pixels; and the area of the one of the second light emitting pixels is larger an area of one of the third light emitting pixels.