WO2019148725A1 - 高像素led显示模块 - Google Patents

高像素led显示模块 Download PDF

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Publication number
WO2019148725A1
WO2019148725A1 PCT/CN2018/089748 CN2018089748W WO2019148725A1 WO 2019148725 A1 WO2019148725 A1 WO 2019148725A1 CN 2018089748 W CN2018089748 W CN 2018089748W WO 2019148725 A1 WO2019148725 A1 WO 2019148725A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
display module
led display
green
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PCT/CN2018/089748
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English (en)
French (fr)
Inventor
陈锐冰
罗锦长
许晋源
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惠州雷通光电器件有限公司
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Publication of WO2019148725A1 publication Critical patent/WO2019148725A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide

Definitions

  • the present invention relates to the field of LED display technologies, and in particular, to a high pixel LED display module.
  • the LED display is a flat panel display consisting of a small LED module panel for displaying various information such as text, images, video, and video signals.
  • the existing LED display screens often use SMD display packaging technology, that is, the SMD is mounted on the circuit board of the display module through the patch technology.
  • SMD display packaging technology that is, the SMD is mounted on the circuit board of the display module through the patch technology.
  • the present invention adopts the following technical solutions:
  • a high-pixel LED display module includes a circuit substrate and a light source; the light source is mounted on the circuit substrate; the high-pixel LED display module further includes a light guiding layer covering the circuit substrate; the light guiding A light source accommodating groove for accommodating the light source and a plurality of light guiding mechanisms for radiating light emitted from the light source to the outside of the light guiding layer are disposed in the layer.
  • the light guiding mechanism includes a light collecting end, a light guiding end and a light emitting end; the light collecting end is disposed on the light source receiving groove, and the light emitted by the light source is collected; the light emitting end is disposed at the light guiding end On the layer, the light is emitted to the outside of the light guiding layer; the light guiding light is disposed between the light collecting end and the light emitting end, and is configured to conduct the light collected by the light collecting end to the light emitting end.
  • each of the light source accommodating grooves is provided with a plurality of light collecting ends; and the light guiding layer is provided with a plurality of light emitting ends.
  • the light collecting end is a through hole disposed on a top surface or a side surface of the light source receiving groove to allow light to pass through;
  • the light emitting end is a through hole disposed on a top surface or a side surface of the light guiding layer to allow light to pass therethrough.
  • the light collecting end and/or the light emitting end through hole are filled with a light transmissive material.
  • the light guiding mechanism is a through hole that allows light to pass through.
  • the light guiding mechanism further includes a control layer disposed in the light guiding layer; the control layer controls a light intensity transmitted by the light guiding mechanism to the outside of the light guiding layer.
  • a control mechanism corresponding to the light guiding mechanism is disposed in the control layer; the control mechanism includes an adjustable angle light blocking plate, a conductive line, and a light blocking plate controller that can be opened, closed, or opened; the light blocking plate The controller is electrically connected to the light blocking plate through a conductive wire, and controls the light blocking plate to open, close or control an angle at which the light blocking plate is opened.
  • control mechanism includes a plurality of light blocking plates.
  • the cross-sectional shape of the light source accommodating groove is a trapezoid whose upper bottom is longer than the lower bottom.
  • the light guided by the light guiding mechanism to the outside of the light guiding layer includes red light, green light, and blue light, and one red light, one green light, and one blue light form one pixel unit.
  • the light source includes a red light source that emits red light, a green light source that emits green light, and a blue light source that emits blue light; the red light source, the green light source, and the blue light source are respectively placed in different light source receiving slots.
  • the red light source, the green light source, and the red light, the green light, and the blue light emitted by the blue light source are respectively emitted to the outside of the light guiding layer through the light guiding mechanism on the corresponding light source receiving groove.
  • the light sources in the different light source accommodating grooves emit light of the same color; the plurality of light guiding mechanisms are respectively provided with red light filters that allow only red light to pass, and green lights that only allow green light to pass through. Light filters and blue filters that only allow blue light to pass through.
  • a plurality of light sources emitting light of the same color may be placed in the light source receiving groove.
  • the light guiding mechanism is conducted to the outside of the light guiding layer, and the red light, the green light and the blue light constituting one pixel unit are arranged in an equilateral triangle.
  • each of the red lights is used as a center point of a regular hexagon, and is shared by blue and green lights on six vertices of a regular hexagon to form six pixel units; each of the green lights is used as a center of a regular hexagon.
  • the dots are shared by red and blue light on the six vertices of the regular hexagon to form six pixel units; each of the blue light is used as the center point of the regular hexagon, and is red and green on the six vertices of the regular hexagon. Shared, composed of six pixel units.
  • the light guiding mechanism is conducted to the outside of the light guiding layer, and the red light, the green light, and the blue light constituting one pixel unit are located on the same straight line.
  • a display screen using the above high-pixel LED display module is a display screen using the above high-pixel LED display module.
  • the invention transmits the light emitted by the light source to the outside of the light guiding layer through a plurality of light guiding mechanisms, does not reduce the size of the light source, does not increase the layout density of the light source, and realizes high pixel LED display.
  • the present invention can control the intensity of light transmitted from the light guiding mechanism to the outside of the light guiding layer through the control layer.
  • the adjacent red, green and blue light emitted from the present invention to the outside of the light guiding layer are arranged according to an equilateral triangle, and red, green or blue light between adjacent pixel units can be shared, thereby improving the display module.
  • Pixel manufactures a display screen through a high pixel display module, increasing the pixels of the display screen.
  • FIG. 1 is a partial cross-sectional view of a high-pixel LED display module in accordance with an embodiment of the present invention
  • Figure 2 is a partial cross-sectional view showing a light guiding layer according to an embodiment of the present invention
  • FIG. 3 is a partial plan view of a light guiding layer according to Embodiment 1 of the present invention.
  • Figure 4 is a partial bottom plan view of a light guiding layer according to an embodiment of the present invention.
  • Figure 5 is a block diagram showing the overall structure of a light guiding mechanism and a control mechanism according to an embodiment of the present invention
  • FIG. 6 is a block diagram showing the overall structure of a control mechanism according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a display manner according to Embodiment 1 of the present invention.
  • FIG. 8 is a schematic diagram of another display manner according to Embodiment 1 of the present invention.
  • Figure 9 is a general assembly view of the first embodiment of the present invention.
  • FIG. 10 is a partial plan view of a circuit substrate according to an embodiment of the present invention.
  • Figure 11 is a partial bottom plan view of a circuit substrate according to an embodiment of the present invention.
  • a high-pixel LED display module includes a circuit substrate 1, a light source 2 mounted on the circuit substrate 1, a light guiding layer 3 overlying the circuit substrate 1, and an integrated circuit 4 mounted on the circuit substrate 1.
  • the light source is an LED chip.
  • the light source 2 emits light, and the light guiding layer 3 conducts the light emitted from the light source 2 to the outside of the light guiding layer 3.
  • the circuit substrate 1 may be composed of a single or a combination of BT, FR4, ceramic, metal, etc.; the light source 2 may be a flip chip, a positive chip or a vertical chip; and the light guiding layer 3 is a high temperature resistant material such as acrylic. .
  • the light guide layer 3 is provided with a light source accommodating groove 31 for accommodating the light source 2 on one surface of the circuit board 2.
  • a plurality of light guiding mechanisms 32 and a control layer 33 are further disposed in the light guiding layer 3.
  • the light guiding mechanism 32 is for guiding the light emitted from the light source 2 to the outside of the light guiding layer 3, and the control layer 33 is for controlling the intensity of the light conducted by the light guiding mechanism 32 to the outside of the light guiding layer 3.
  • the direction of the light guiding layer 3 adjacent to the circuit board 2 is the bottom end, and the direction away from the circuit board 2 is the top end; the direction of the light source receiving groove 31 close to the circuit board 2 is the bottom end, away from the circuit board 2 For the top.
  • the light guiding mechanism 32 includes a light collecting end 321 disposed on the light source receiving groove 31, a light emitting end 322 disposed on the top surface of the light guiding layer 3, and a light collecting end 321 disposed between the light collecting end 321 and the light emitting end 322.
  • the light collecting end 321 collects the light emitted by the light source 2, and the light guiding light 323 transmits the light collected by the light collecting end 321 to the light emitting end 322, and the light emitting end 322 emits the light conducted by the light guiding light 323 to the outside of the light guiding layer 3.
  • the light guiding light 323 is a medium that can conduct light, such as an optical fiber.
  • the light collecting end 321 is a through hole disposed on the top surface of the light source accommodating groove 31 for allowing light to pass therethrough, and a plurality of light collecting ends are disposed on the top surface of each light source chip slot;
  • the light emitting end 322 is disposed at A through hole for allowing light to pass through the top surface of the light guiding layer 3, and a plurality of light emitting ends are disposed on the top surface of the light guiding layer.
  • the light collecting end 321 may also be a through hole disposed on the side of the light source receiving groove 31 for allowing light to pass through; the light emitting end 322 may also be a through hole disposed on the side of the light guiding layer 3 to allow light to pass therethrough.
  • the through hole and/or the light exit end 322 of the lighting end 321 may also be filled with a light permeable material.
  • the permeable material can allow light to pass through.
  • the permeable material filled in the through hole of the light emitting end 322 may be higher than the top end of the light guiding layer 3, and the portion higher than the top end of the light guiding layer 3 may be set to a different shape according to the visual viewing angle requirement, such as a hemisphere or a square body.
  • the permeable material filled in the through holes of the light collecting end 321 and the light emitting end 322 can protect the lighting end 321 and the light emitting end 322 from being blocked by dust, debris, etc., and reduce the probability of poor light output.
  • a control mechanism 331 is provided in the control layer 33.
  • the control mechanism 331 is disposed in the light guiding mechanism 32 for controlling the intensity of light conducted by the light guiding mechanism 32 to the outside of the light guiding layer 3.
  • control mechanism 331 is disposed between the light guide 323 and the light exit end 322.
  • control mechanism 331 can be disposed between the lighting end 321 and the light guiding 323, or inside the light guiding 323, or inside the lighting end 321 or inside the light emitting end 322.
  • the control mechanism 331 includes a plurality of light blocking plates 3311, conductive wires 3312, a light barrier mounting seat 3313, and a light barrier controller (not shown).
  • the light blocking plate 3311 is mounted in the light barrier mounting seat 3313.
  • the conductive wire 3312 passes through the light barrier mounting seat 3313 and is electrically connected to the light blocking plate 3311.
  • the light guide plate 3311 controls the light intensity according to the principle that when the light blocking plate 3311 is opened, the light can pass; when the light blocking plate 3311 is closed, the light cannot pass; the light blocking plate 3311 can be opened under the control of the light blocking controller or Closing; the light barrier controller controls the intensity of light conducted by the light guiding mechanism 32 to the outside of the light guiding layer 3 by controlling the number of opening or closing of the plurality of light blocking plates 3311.
  • the light barrier controller controls the number of opening or closing of the plurality of light blocking plates 3311 by logic programming.
  • the plane of the light blocking plate 3311 is perpendicular to the light transmission direction; when the light blocking plate 3311 is opened, the direction of light transmission is parallel to the plane of the light blocking plate 3311, and the light output angle is not offset.
  • the light barrier controller can control the light intensity by controlling the angle of opening of the plurality of light barriers 3311.
  • control mechanism may include only one light barrier; the light barrier controller controls the light intensity by controlling the angle at which a light barrier is opened.
  • the cross section of the light source accommodating groove 31 is a trapezoid whose upper base length is longer than the length of the lower bottom.
  • the collecting end disposed on the top surface of the light source receiving groove can have a larger layout area, which is convenient for increasing the layout density of the collecting end, and further increasing the pixels of the display module.
  • the cross section of the light source accommodating groove 31 may also be other shapes such as a rectangle, a semicircle, or the like.
  • the through holes used for the light-emitting end 321 and the through holes of the light-emitting end 322 are square.
  • the through holes used for the through holes 321 and the light exiting ends 322 may have other shapes, such as a circular shape, an irregular shape, and the like.
  • the light source 2 includes a red light source R that emits red light, a green light source G that emits green light, and a blue light source B that emits blue light.
  • the principle that the high-pixel LED display module transmits the red light, the green light, and the blue light emitted by the red light source R, the green light source G, and the blue light source B to the outside of the light guiding layer 3 through the light guiding mechanism 323 is as follows:
  • the through holes R1, R2, R3 of the light collecting end 321 on the light source receiving groove 31 corresponding to the red light source R collect the red light emitted by the red light source R, and are transmitted to the light emitting end 322 through the transmission of the corresponding light guiding light 323.
  • Through holes R1', R2', R3'...; the through holes G1, G2, G3 of the light collecting end 321 on the light source receiving groove 31 corresponding to the green light source G collect the green light emitted by the green light source G, And through the transmission of the corresponding light guide 323, the through holes G1', G2', G3'...
  • the pixel units Rn', Gn', Bn' on the light-emitting end 322 are on the same straight line, and adjacent pixel units may not be shared.
  • the pixel units R, G, and B on the light-emitting end 322 are arranged in an equilateral triangle, and adjacent pixel units can be shared, and the pixels of the display module are added.
  • the red light R1 is located at the center of the regular hexagon B1G2B3G1B4G4.
  • Red light R1, blue light B1, green light G4 form a pixel unit
  • red light R1, blue light B1, green light G2 constitute a pixel unit
  • red light R1, green light G2, blue light B3 constitute a pixel unit
  • red light R1, green light G1, and blue light B3 form a pixel unit.
  • Red light R1, green light G1, and blue light B4 form a pixel unit
  • red light R1, green light G4, and blue light B4 form a pixel unit, that is, red light R1. Shared by six pixel units.
  • the green light G2 is located at the center of the regular hexagon B1R2B2R3B3R1.
  • Green light G2, blue light B1, red light R2 constitute a pixel unit
  • green light G2, red light R2, blue light B2 constitute a pixel unit
  • green light G2, blue light B2, red light R3 constitute a pixel unit
  • green light G2, red light R3, blue light B3 constitute a pixel unit
  • green light G2, blue light B3, red light R1 constitute a pixel unit
  • green light G2, red light R1, blue light B1 constitute a pixel unit, that is, green light G2 Shared by six pixel units.
  • the blue light B3 is located at the center of the regular hexagon R1G2R3G3R4G1.
  • Blue light B3, red light R1, green light G2 form a pixel unit, blue light B3, green light G2, red light R3 constitute a pixel unit, blue light B3, red light R3, green light G3 constitute a pixel unit, blue light B3 , green light G3, red light R4 constitutes a pixel unit, blue light B3, red light R4, green light G1 constitute a pixel unit, blue light B3, green light G1, red light R1 constitute a pixel unit, that is, blue light B3 is Six pixel units are shared.
  • the number of the light sources 2 in the light source accommodating groove 31 is one. As shown in FIG. 9, in other embodiments, the number of the light sources 2 in the light source accommodating groove 31 may be plural. However, the light source 2 in the same light source receiving groove 31 can only emit light of the same color.
  • the light guiding layer 3 is disposed near one end of the circuit substrate 1 with pins 34 for electrically connecting to the circuit substrate 1; the circuit substrate 1 is adjacent to the light guiding layer 3. One end is provided with a light source pad 11 for soldering the light source 2, and a light guiding layer pad 12 for soldering the light guiding layer 3.
  • An integrated circuit pad 13 for soldering the integrated circuit 4 is provided at one end of the circuit substrate 1 away from the light guiding layer 3.
  • the light guiding layer 3 and the circuit substrate 1 may be connected by other means, such as a plug connection, a patch connection, or the like, as long as the light guiding layer 3 is electrically connected to the circuit substrate 1.
  • the difference between this embodiment and the first embodiment is that the light guiding mechanism is a through hole disposed in the light guiding layer and allowing light to pass therethrough. Light from different color sources passes through the through holes and is emitted outside the light guiding layer.
  • the difference between this embodiment and the first embodiment is that the light sources all emit light of the same color.
  • Red light filters, green light filters, and blue light filters are respectively disposed in different light guiding mechanisms.
  • the red light filter, the green light filter, and the blue light filter respectively absorb light of other colors in the light emitted by the light source, and only red, green, and blue light are allowed to pass.
  • the red light filter, the green light filter, and the blue light filter are respectively disposed in different light exit ends.
  • the red light filter, the green light filter, and the blue light filter are respectively disposed in different light collecting ends.
  • the light guiding mechanism is a through hole that allows light to pass through.
  • a red light filter, a green light filter, and a blue light filter are respectively disposed in the through holes to emit red light, green light, and blue light to the outside of the light guide layer.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Led Device Packages (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本发明公开了一种高像素LED显示模块，包括电路基板以及光源；所述光源安装在所述电路基板上；所述高像素LED显示模块还包括覆盖在所述电路基板上的导光层；所述导光层中设置有用于容纳所述光源的光源容置槽以及将所述光源发射的光线传导到所述导光层外部的多个导光机构；本发明还公开了一种使用所述高像素显示模块的显示屏；本发明通过多个导光机构将光源发射的光线传导到导光层外部，不减小光源的尺寸，不增加光源布局密度，实现高像素LED显示。

Description

高像素LED显示模块 〖技术领域〗
本发明涉及LED显示技术领域，具体涉及一种高像素LED显示模块。
〖背景技术〗
LED显示屏是一种平板显示器，由一个个小的LED模块面板组成，用来显示文字、图像、视频、录像信号等各种信息。
现有的LED显示屏常采用SMD显示屏封装技术，即将通过贴片技术将SMD贴装到显示模块的电路基板上。当生产高像素显示屏时，发光点密度增加，需要焊接的支架引脚增加，焊接难度也因为引脚缩小、数量增多，导致良率低下，且维修困难，难以达到制作小间距显示屏的需求。
〖发明内容〗
本发明的目的旨在提供一种高像素LED显示模块，不增加光源的尺寸以及布局密度，实现高像素LED显示。
为了实现本发明的目的，本发明采取了如下的技术方案：
一种高像素LED显示模块，包括电路基板以及光源；所述光源安装在所述电路基板上；所述高像素LED显示模块还包括覆盖在所述电路基板上的导光层；所述导光层中设置有用于容纳所述光源的光源容置槽以及将所述光源发射的光线传导到所述导光层外部的多个导光机构。
进一步地，所述导光机构包括采光端、导光线以及出光端；所述采光端设置在所述光源容置槽上，采集所述光源发射的光线；所述出光端设置在所述导光层上，将光线发射到导光层外部；所述导光线设置在所述采光端与所述出光端之间，用于将采光端采集的光线传导到所述出光端。
进一步地，所述每个光源容置槽上设置有多个采光端；所述导光层上设置有多个出光端。
进一步地，所述采光端为设置在光源容置槽顶面或侧面上的允许光线通过 的通孔；所述出光端为设置在导光层顶面或侧面的允许光线通过的通孔。
进一步地，所述采光端和/或所述出光端通孔中填充有透光材料。
进一步地，所述导光机构为允许光线通过的通孔。
进一步地，所述导光机构还包括设置在所述导光层中的控制层；所述控制层控制导光机构传导到导光层外部的光线强度。
进一步地，所述控制层中设置有与导光机构对应的控制机构；所述控制机构包括可以打开、闭合或打开的角度可调的挡光板、导电线以及挡光板控制器；所述挡光板控制器通过导电线与所述挡光板电连接，控制所述挡光板打开、闭合或控制挡光板打开的角度。
进一步地，所述控制机构包括多个挡光板。
进一步地，所述光源容置槽的剖面形状为上底长于下底的梯形。
进一步地，所述导光机构传导到所述导光层外部的光线包括红光、绿光以及蓝光，且一束红光、一束绿光以及一束蓝光组成一个像素单元。
进一步地，所述光源包括发射红光的红光光源、发射绿光的绿光光源以及发射蓝光的蓝光光源；所述红光光源、绿光光源以及蓝光光源分别放置在不同的光源容置槽；所述红光光源、绿光光源以及蓝光光源发射的红光、绿光以及蓝光分别通过相应光源容置槽上的导光机构，发射到导光层外部。
进一步地，所述不同光源容置槽中的光源发射同一种颜色的光；所述多个导光机构中分别设置有只允许红光通过的红光滤光片、只允许绿光通过的绿光滤光片以及只允许蓝光通过的蓝光滤光片。
进一步地，所述光源容置槽中可以放置多个发射同一种颜色光线的光源。
进一步地，所述导光机构传导到导光层外部的，组成一个像素单元的红光、绿光以及蓝光按照等边三角形设置。
进一步地，所述每一个红光作为正六边形的中心点，被正六边形六个顶点上的蓝光、绿光共享，组成六个像素单元；所述每一个绿光作为正六边形的中心点，被正六边形六个顶点上的红光、蓝光共享，组成六个像素单元；所述每一个蓝光作为正六边形的中心点，被正六边形六个顶点上的红光、绿光共享， 组成六个像素单元。
进一步地，所述导光机构传导到导光层外部的，组成一个像素单元的红光、绿光以及蓝光位于同一条直线上。
一种显示屏，采用上述高像素LED显示模块。
本发明有益效果：
本发明通过多个导光机构将光源发射的光线传导到导光层外部，不减小光源的尺寸，不增加光源的布局密度，实现高像素LED显示。同时，本发明可以通过控制层控制导光机构传导到导光层外部的光线强度。与此同时，本发明发射到导光层外部的相邻红光、绿光以及蓝光按照等边三角形设置，相邻像素单元之间的红光、绿光或蓝光能够共享，提高了显示模块的像素。与此同时，本发明通过高像素显示模块制造显示屏，增加了显示屏的像素。
〖附图说明〗
为了更清楚地说明本发明实施例，下面对实施例中所需要使用的附图做简单的介绍。下面描述中的附图仅仅是本发明中的实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图。
图1是本发明实施例一高像素LED显示模块的局部剖面图；
图2是本发明实施例一导光层的局部剖面图；
图3是本发明的实施例一导光层的局部俯视图；
图4是本发明的实施例一导光层的局部仰视图；
图5是本发明的实施例一导光机构以及控制机构的整体结构框图；
图6是本发明实施例一控制机构的整体结构框图；
图7是本发明实施例一的一种显示方式示意图；
图8是本发明实施例一的另一种显示方式示意图；
图9是本发明实施例一的一种整体装配图；
图10是本发明实施例一电路基板的局部俯视图；
图11是本发明的实施例一电路基板的局部仰视图；
附图说明：1，光源；2，电路基板；3，导光层；4，集成电路；11，光源焊盘；12，导光层焊盘；13，集成电路焊盘；31，光源容置槽；32，导光机构；33，控制层；34，引脚；321，采光端；322，出光端；323，导光线；331，控制机构；3311，挡光板；3312，导电线；3313，挡光板安装座。
〖具体实施方式〗
下面结合附图，对本发明进行详细的说明。
为了使本发明的目的、技术方案、优点更加清楚明白，以下结合附图及实施例对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例1
如图1所示，一种高像素LED显示模块包括电路基板1，安装在电路基板1上的光源2，覆盖在电路基板1上的导光层3以及安装在电路基板1上的集成电路4。在本实施例中，光源为LED芯片。光源2发光，导光层3将光源2发射的光线传导到导光层3的外部。在本实施例中，电路基板1可由BT、FR4、陶瓷、金属等材料单一或组合构成；光源2可以是倒装芯片、正装芯片或垂直芯片；导光层3为耐高温材料，如亚克力等。
如图1，2所示，导光层3靠近电路基板2的一个面上设置有容纳光源2的光源容置槽31。如图1，2，5所示，导光层3中还设置有多个导光机构32以及控制层33。导光机构32用于将光源2发出的光传导到导光层3的外部，控制层33用于控制导光机构32传导到导光层3外部的光线强度。在本实施例中，导光层3靠近电路基板2的方向为底端，远离电路基板2的方向为顶端；光源容置槽31靠近电路基板2的方向为底端，远离电路基板2的方向为顶端。
如图5所示，导光机构32包括设置在光源容置槽31上的采光端321，设置在导光层3顶面上的出光端322以及设置在采光端321、出光端322之间的导光线323。采光端321采集光源2发射的光线，导光线323将采光端321采集的光线传导到出光端322，出光端322将导光线323传导的光线发射到导光层3的外部。在本实施例中，导光线323为可以传导光线的介质，比如光纤。
在本实施例中，采光端321为设置在光源容置槽31顶面的允许光线通过的通孔，且每个光源芯片槽顶面上均设置有多个采光端；出光端322为设置在导光层3顶面的允许光线通过的通孔，且导光层顶面上设置有多个出光端。
在别的实施例中，采光端321也可以是设置在光源容置槽31侧面的允许光线通过的通孔；出光端322也可以是设置在导光层3侧面的允许光线通过的通孔。
在别的实施例中，采光端321的通孔和/或出光端322中还可以填充可透光材料。所述可透光材料可以允许光线通过。出光端322通孔中填充的可透光材料可高于导光层3顶端，高于导光层3顶端的部分可根据可视视角要求设置为不同的形状，如半球体或方体。采光端321和出光端322通孔中填充的可透光材料可以保护采光端321和出光端322不被灰尘、杂物等堵塞，降低出光不良的几率。
如图1，2，5所示，控制层33中设置有控制机构331。控制机构331设置在导光机构32中，用于控制导光机构32传导到导光层3外部的光线强度。
如图5所示，在本实施例中，控制机构331设置在导光线323与出光端322之间。在别的实施例中，控制机构331可以设置在采光端321与导光线323之间，或，导光线323内部，或，采光端321内部，或，出光端322内部。
如图6所示，控制机构331包括多个挡光板3311、导电线3312、挡光板安装座3313与挡光板控制器(未图示)。挡光板3311安装在挡光板安装座3313中。导电线3312贯穿挡光板安装座3313，与挡光板3311电连接。在本实施例中，挡光板3311控制光线强度的原理为：挡光板3311打开时，光线可以通过；挡光板3311闭合时，光线不能通过；挡光板3311可以在挡光板控制器的控制下打开或闭合；挡光板控制器通过控制多个挡光板3311打开或闭合的数量，控制导光机构32传导到导光层3外部的光线强度。
在本实施例中，挡光板控制器通过逻辑编程控制多个挡光板3311打开或闭合的数量。
在本实施例中，挡光板3311闭合时，挡光板3311所在的平面与光线传输方向垂直；挡光板3311打开时，光线传输的方向与挡光板3311所在的平面平 行，出光角度不会发生偏移。
在别的实施例中，挡光板控制器可以通过控制多个挡光板3311打开的角度大小，控制光线强度。
在别的实施例中，控制机构可以只包括一块挡光板；挡光板控制器通过控制一块挡光板打开的角度，控制光线强度。
如图2所示，在本实施例中，光源容置槽31的剖面为上底长度大于下底长度的梯形。此时，设置在光源容置槽顶面的采集端可以有更大的布局面积，便于增加采集端的布局密度，进一步增加显示模块的像素。在别的实施例中，光源容置槽31的剖面也可以为其它形状，如长方形、半圆形等。
如图3，4所示，在本实施例中，采光端321采用的通孔与出光端322采用的通孔均为方形。在别的实施例中，采光端321采用的通孔与出光端322采用的通孔也可以为其他形状，如圆形、不规则形状等。
如图7所示，在本实施例中，光源2包括发射红光的红光光源R、发射绿光的绿光光源G以及发射蓝光的蓝光光源B。高像素LED显示模块通过导光机构323将红光光源R、绿光光源G以及蓝光光源B发射的红光、绿光以及蓝光传导到导光层3外部的原理如下：
红光光源R对应的光源容置槽31上的采光端321的通孔R1、R2、R3……采集红光光源R发射的红光，并通过相应导光线323的传输，传导到出光端322的通孔R1’、R2’、R3’……；绿光光源G对应的光源容置槽31上的采光端321的通孔G1、G2、G3……采集绿光光源G发射的绿光，并通过相应导光线323的传输，传导到出光端322的通孔G1’、G2’、G3’……；蓝光光源B对应的光源容置槽31上的采光端321的通孔B1、B2、B3……采集蓝光光源B发射的蓝光，并通过相应导光线323的传输，传导到出光端322的通孔B1’、B2’、B3’……；其中出光端322的通孔Rn’、Gn’、Bn’组成一个像素单元，n为大于等于1的整数。
如图7所示，在本实施例中，出光端322上的像素单元Rn’、Gn’、Bn’位于同一条直线上，相邻像素单元可能无法共享。
如图8所示，在别的实施例中，出光端322上的像素单元R、G、B均按 照等边三角形设置，相邻像素单元可以共享，增加了显示模块的像素。
如图8所示，红光R1位于正六边形B1G2B3G1B4G4的中心。红光R1、蓝光B1、绿光G4组成了一个像素单元，红光R1、蓝光B1、绿光G2组成了一个像素单元，红光R1、绿光G2、蓝光B3组成了一个像素单元，红光R1、绿光G1、蓝光B3组成了一个像素单元，红光R1、绿光G1、蓝光B4组成了一个像素单元，红光R1、绿光G4、蓝光B4组成了一个像素单元，即红光R1被六个像素单元共享。
如图8所示，绿光G2位于正六边形B1R2B2R3B3R1的中心。绿光G2、蓝光B1、红光R2组成了一个像素单元，绿光G2、红光R2、蓝光B2组成了一个像素单元，绿光G2、蓝光B2、红光R3组成了一个像素单元，绿光G2、红光R3、蓝光B3组成了一个像素单元，绿光G2、蓝光B3、红光R1组成了一个像素单元，绿光G2、红光R1、蓝光B1组成了一个像素单元，即绿光G2被六个像素单元共享。
如图8所示，蓝光B3位于正六边形R1G2R3G3R4G1的中心。蓝光B3、红光R1、绿光G2组成了一个像素单元，蓝光B3、绿光G2、红光R3组成了一个像素单元，蓝光B3、红光R3、绿光G3组成了一个像素单元，蓝光B3、绿光G3、红光R4组成了一个像素单元，蓝光B3、红光R4、绿光G1组成了一个像素单元，蓝光B3、绿光G1、红光R1组成了一个像素单元，即蓝光B3被六个像素单元共享。
如图7所示，光源容置槽31中光源2的数量为一个。如图9所示，在别的实施例中，光源容置槽31中光源2的数量可以为多个。但是，同一个光源容置槽31中的光源2只能发射同一种颜色的光。
如图2，10，11所示，在本实施例中，导光层3靠近电路基板1的一端设置有引脚34，用于与电路基板1电连接；电路基板1靠近导光层3的一端设置有用于焊接光源2的光源焊盘11、用于焊接导光层3的导光层焊盘12。电路基板1远离导光层3的一端设置有用于焊接集成电路4的集成电路焊盘13。在别的实施例中，导光层3与电路基板1还可以通过其他方式连接，例如插接连接、拼搭连接等，只要导光层3与电路基板1电性导通即可。
实施例2
本实施例与实施例一的区别在于：导光机构为设置在导光层中的，允许光线通过的通孔。不同颜色光源发出的光通过通孔，发射到导光层外部。
实施例3
本实施例与实施例一的区别在于：光源均发射同一种颜色的光。不同导光机构中分别设置有红光滤光片、绿光滤光片以及蓝光滤光片。红光滤光片、绿光滤光片以及蓝光滤光片分别吸收光源发射的光中的其它颜色的光，只允许红光、绿光以及蓝光通过。
在本实施例中，红光滤光片、绿光滤光片以及蓝光滤光片分别设置在不同的出光端中。
在别的实施例中，红光滤光片、绿光滤光片以及蓝光滤光片分别设置在不同的采光端中。
实施例4
本实施例与实施例三的区别在于：导光机构为允许光线通过的通孔。在所述通孔中分别设置红光滤光片、绿光滤光片以及蓝光滤光片，就可以发射红光、绿光以及蓝光到导光层外部。
以上所述仅是本发明的优选实施例，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (18)

  1. 一种高像素LED显示模块，包括电路基板以及光源；所述光源安装在所述电路基板上；其特征在于：所述高像素LED显示模块还包括覆盖在所述电路基板上的导光层；所述导光层中设置有用于容纳所述光源的光源容置槽以及将所述光源发射的光线传导到所述导光层外部的多个导光机构。
  2. 根据权利要求1所述的高像素LED显示模块，其特征在于：所述导光机构包括采光端、导光线以及出光端；所述采光端设置在所述光源容置槽上，采集所述光源发射的光线；所述出光端设置在所述导光层上，将光线发射到导光层外部；所述导光线设置在所述采光端与所述出光端之间，用于将采光端采集的光线传导到所述出光端。
  3. 根据权利要求2所述的高像素LED显示模块，其特征在于：所述每个光源容置槽上设置有多个采光端；所述导光层上设置有多个出光端。
  4. 根据权利要求3所述的高像素LED显示模块，其特征在于：所述采光端为设置在光源容置槽顶面或侧面上的允许光线通过的通孔；所述出光端为设置在导光层顶面或侧面的允许光线通过的通孔。
  5. 根据权利要求4所述的高像素LED显示模块，其特征在于：所述采光端和/或所述出光端通孔中填充有透光材料。
  6. 根据权利要求1所述的高像素LED显示模块，其特征在于：所述导光机构为允许光线通过的通孔。
  7. 根据权利要求1-6任意一项所述的高像素LED显示模块，其特征在于：所述导光机构还包括设置在所述导光层中的控制层；所述控制层控制导光机构传导到导光层外部的光线强度。
  8. 根据权利要求7所述的高像素LED显示模块，其特征在于：所述控制层中设置有与导光机构对应的控制机构；所述控制机构包括可以打开、闭合或打开的角度可调的挡光板、导电线以及挡光板控制器；所述挡光板控制器通过导电线与所述挡光板电连接，控制所述挡光板打开、闭合或控制挡光板打开的角度。
  9. 根据权利要求8所述的高像素LED显示模块，其特征在于：所述控制机构包括多个挡光板。
  10. 根据权利要求1-6任意一项所述的高像素LED显示模块，其特征在于：所述光源容置槽的剖面形状为上底长于下底的梯形。
  11. 根据权利要求1-6任意一项所述的高像素LED显示模块，其特征在于：所述导光机构传导到所述导光层外部的光线包括红光、绿光以及蓝光，且一束红光、一束绿光以及一束蓝光组成一个像素单元。
  12. 根据权利要求11所述的高像素LED显示模块，其特征在于：所述光源包括发射红光的红光光源、发射绿光的绿光光源以及发射蓝光的蓝光光源；所述红光光源、绿光光源以及蓝光光源分别放置在不同的光源容置槽；所述红光光源、绿光光源以及蓝光光源发射的红光、绿光以及蓝光分别通过相应光源容置槽上的导光机构，发射到导光层外部。
  13. 根据权利要求11所述的高像素LED显示模块，其特征在于：所述不同光源容置槽中的光源发射同一种颜色的光；所述多个导光机构中分别设置有只允许红光通过的红光滤光片、只允许绿光通过的绿光滤光片以及只允许蓝光通过的蓝光滤光片。
  14. 根据权利要求12或13所述的高像素LED显示模块，其特征在于：所述光源容置槽中可以放置多个发射同一种颜色光线的光源。
  15. 根据权利要求11所述的高像素LED显示模块，其特征在于：所述导光机构传导到导光层外部的，组成一个像素单元的红光、绿光以及蓝光按照等边三角形设置。
  16. 根据权利要求15所述的高像素LED显示模块，其特征在于：所述每一个红光作为正六边形的中心点，被正六边形六个顶点上的蓝光、绿光共享，组成六个像素单元；所述每一个绿光作为正六边形的中心点，被正六边形六个顶点上的红光、蓝光共享，组成六个像素单元；所述每一个蓝光作为正六边形的中心点，被正六边形六个顶点上的红光、绿光共享，组成六个像素单元。
  17. 根据权利要求11所述的高像素LED显示模块，其特征在于：所述导光机构传导到导光层外部的，组成一个像素单元的红光、绿光以及蓝光位于同一条直线上。
  18. 一种显示屏，其特征在于：采用权利要求1-17任意一项所述的高像素 LED显示模块。
PCT/CN2018/089748 2018-02-05 2018-06-04 高像素led显示模块 WO2019148725A1 (zh)

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