CN112863390B - Light-emitting module, backlight module and display device - Google Patents

Light-emitting module, backlight module and display device Download PDF

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Publication number
CN112863390B
CN112863390B CN202110257329.6A CN202110257329A CN112863390B CN 112863390 B CN112863390 B CN 112863390B CN 202110257329 A CN202110257329 A CN 202110257329A CN 112863390 B CN112863390 B CN 112863390B
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light
emitting
light emitting
substrate
module
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CN112863390A (en
Inventor
曾庆鹏
吴超
苏世虎
李兴
周南栋
何钰康
李响
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Shanghai AVIC Optoelectronics Co Ltd
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Shanghai AVIC Optoelectronics Co Ltd
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    • 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
    • G09F9/35—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 liquid crystals
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The application relates to a light-emitting module, a backlight module and a display device. This luminous module is including two at least luminescent panels of mutual concatenation, and luminous module still includes: a display area corresponding to each light emitting panel; the light supplementing area corresponds to the area where the at least two light emitting panels are spliced mutually, and the light supplementing area comprises a light supplementing element. This application can avoid the luminescent panel of mutual concatenation to produce the dark line in concatenation position department, improves the light-emitting quality of luminous module.

Description

Light-emitting module, backlight module and display device
Technical Field
The present application relates to the field of display technologies, and in particular, to a light emitting module, a backlight module and a display device.
Background
With the rapid development of display technologies, the viewing requirements of larger screens are more and more popular with people, and the display screens have wide application prospects in large-size display fields such as command monitoring centers, business centers, high-end conferences, private cinemas and the like. The technology of splicing screens is now on the rise, and the technology of splicing screens refers to an oversized display screen formed by splicing a plurality of vertically and horizontally arranged display screens.
The large-sized display screen includes, for example, a Light Emitting Diode (LED) display, which employs a plurality of small-sized LED Light Emitting panels integrally spliced with each other. However, due to the problems of warping, unevenness, breakage, light truncation, black edge cutting and the like of the splicing position, a dark line is generated at the splicing position, so that the color tone of the light emitted at the splicing position is inconsistent with the normal light emitting area, and the light emitting quality of the display is affected.
Disclosure of Invention
The utility model aims at providing a light-emitting module, backlight unit and display device, this light-emitting module can avoid the light-emitting panel of mutual concatenation to produce the dark line in concatenation position department, improves the light-emitting quality.
On the one hand, this application embodiment provides a luminous module, including two at least luminescent panels of mutual concatenation, luminous module still includes: a display area corresponding to each light emitting panel; the light supplementing area corresponds to the area where the at least two light emitting panels are spliced mutually, and the light supplementing area comprises a light supplementing element.
On the other hand, the embodiment of the present application further provides a backlight module, which includes the light emitting module described above.
On the other hand, the embodiment of the application also provides a display device, which comprises the light-emitting module.
The application provides a pair of light-emitting module, backlight unit and display device, this light-emitting module include two at least luminescent panels of mutual concatenation, and light-emitting module still includes display area and light filling district, and the display area corresponds with every luminescent panel, and the light filling district corresponds with the region of two at least luminescent panels mutual concatenations, and the light filling district includes the light filling component. The light supplementing element through the light supplementing area improves the brightness of the splicing position, the light emitting panels which are mutually spliced are prevented from generating dark lines at the splicing position, and the light emitting quality of the light emitting module is improved.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are provided with like reference numerals. The drawings are not necessarily to scale, they are merely intended to illustrate the relative positions of the layers, and the thicknesses of some portions are exaggerated for ease of understanding, and the thicknesses in the drawings do not represent the proportional relationship of the actual thicknesses.
Fig. 1 is a schematic top view illustrating a light emitting module according to an embodiment of the present disclosure;
FIG. 2 isbase:Sub>A schematic cross-sectional view of the light emitting module shown in FIG. 1 along the A-A direction;
FIG. 3 is a schematic cross-sectional view of the light emitting module shown in FIG. 1 along the direction B-B;
fig. 4 is a schematic top view illustrating a light emitting module according to an alternative embodiment of the present application;
FIG. 5 shows a schematic cross-sectional view of FIG. 4 along the direction C-C;
fig. 6 is a schematic top view illustrating a light emitting module according to another alternative embodiment of the present application;
FIG. 7 shows a schematic view of a splice structure of the light emitting panel shown in FIG. 6;
FIG. 8 is a schematic cross-sectional view taken along line D-D of FIG. 6;
fig. 9 shows an enlarged structural view of a region E of fig. 8;
fig. 10 is a schematic cross-sectional view of a light-emitting panel of a light-emitting module according to another alternative embodiment of the present application along the direction D-D.
Description of reference numerals:
AA-display area; SA-light supplement area;
10-a light-emitting panel; 1-a light emitting element; 2-a light supplement element; g-fluorescent powder glue layer;
101-a light-emitting substrate; 102-a light supplement substrate; 103-a conductive layer; 104-an insulating layer; 11-a body portion; 111-a first electrode; 112-a second electrode; 12-a connecting portion; 121-a convex part; 13-a first surface; 14-a second surface; 15-a connecting part; w1-first pad; w2-second pad; w3-third pad;
3-a light guiding layer; 4-a support frame; 41-a first support part; 42-a second support; 43-third support.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
It is noted that, herein, relational terms such as third and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
With the rapid development of display technology, the viewing requirement of larger screens is more and more popular with people, and the display screen has wide application prospects in the large-size display fields of command monitoring centers, business centers, high-end conferences, private cinemas and the like. At present, a large-size display screen can be made to be 60-100 inches, but the requirements of some special occasions (such as monitoring, scheduling and the like) are still difficult to meet, and the qualification rate of the oversized display screen is difficult to guarantee.
The technology of splicing screens is now on the rise, and the technology of splicing screens refers to an oversized display screen formed by splicing a plurality of vertically and horizontally arranged display screens. However, in the display screens spliced with each other, due to the problems of warping, unevenness, breakage, light interception, black edge cutting and the like of the splicing positions, dark lines are generated at the splicing positions, so that the luminous color tones of the splicing positions are inconsistent with the normal luminous areas, and the light emitting quality of the display is influenced.
In order to solve the above problem, an embodiment of the present application provides a light emitting module. The light emitting module provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings.
Fig. 1 isbase:Sub>A schematic top view illustratingbase:Sub>A light emitting module according to an embodiment of the present disclosure, and fig. 2 isbase:Sub>A schematic cross-sectional view of the light emitting module shown in fig. 1 alongbase:Sub>A directionbase:Sub>A-base:Sub>A.
The embodiment of the application provides a light-emitting module, including two at least luminescent panels 10 of mutual concatenation, light-emitting module still includes the district SA of display area AA and light filling, and display area AA corresponds with every luminescent panel 10, and the regional correspondence of light filling district SA and two at least luminescent panels 10 mutual concatenations, and light filling district SA includes light filling component 2.
Further, the light-emitting panel 10 includes a light-emitting substrate 101 and a plurality of light-emitting elements 1, the light-emitting substrate 101 includes a main body portion 11, and the plurality of light-emitting elements 1 are arranged on the main body portion 11. The light supplementing element 2 is located on one side of the light emitting element 1, which is far away from the light emitting surface.
As shown in fig. 1 and 2, the light emitting module includes four light emitting panels 10 arranged in two rows and two columns, each light emitting panel 10 has a rectangular structure, two sides of each light emitting panel 10 perpendicular to each other are spliced with adjacent light emitting panels 10, a splicing area forms a light compensating area SA distributed in a cross shape, and an area of each light emitting panel 10 forms a display area AA. The display area AA includes a plurality of light emitting elements 1 arranged in an array for realizing a light emitting display function. The light supplementing area SA comprises a plurality of light supplementing elements 2 which are arranged in rows or columns, and the light supplementing elements 2 are positioned on one side of the light emitting elements 1, which is far away from the light emitting surface, so that on one hand, the light supplementing elements are used for supplementing the light rays of the light supplementing area SA and improving the brightness of the splicing position, and the brightness of the light supplementing area SA is consistent with that of the display area AA; on the other hand, the light emitted by the light supplement element 2 is prevented from diffusing to the display area AA to affect the display effect, and the light emitting quality of the light emitting module is improved.
It is to be understood that the shape of the light-emitting panel 10 is not limited to the rectangular structure, and may be any other shape as long as the requirement of mutual splicing is satisfied, and the description is omitted.
As an alternative embodiment, the light-emitting panel 10 is a direct-type backlight module, and is used to provide a light source for a Liquid Crystal Display (LCD) panel located on a light-emitting surface side of the light-emitting panel 10. Because the LCD display panel does not emit light, the backlight module can provide enough light sources with uniform brightness distribution for the LCD display panel, so that the LCD display panel can normally display images.
Optionally, the Light Emitting element 1 is a Light Emitting Diode (LED), a Micro-LED (Micro-LED) or a submillimeter LED (Mini-LED). The LED is a commonly used light-emitting body, the Mini-LED refers to the light-emitting body with the grain size of about 100-300 microns, and the Micro-LED refers to the light-emitting body with the grain size of less than 100 microns. The Mini-LED/Micro-LED can be used as a self-emitting diode for display, and has the advantages of low power consumption, high brightness, high resolution, high color saturation, high reaction speed, long service life, high efficiency and the like. The light emitting element 1 is for emitting white light. The light-emitting substrate 101 is a printed circuit board electrically connected to the light-emitting element 1. Optionally, the printed circuit board is a flexible circuit board. In addition, the light emitting substrate 101 further includes a light guide plate for supporting the printed circuit board, and the light guide plate is made of a light transmitting material such as glass or Polyimide (PI).
As an alternative embodiment, the light emitting panel 10 may be an LED display panel.
Optionally, the light emitting element 1 is a Micro-LED or a Mini-LED. The light emitting element 1 may include a red light emitting element, a green light emitting element, and a blue light emitting element, or may further include light emitting elements of other colors, and a plurality of the light emitting elements 1 are transferred onto the light emitting substrate 101 by a batch transfer technique to form a light emitting layer. The light-emitting substrate 101 may be made of a light-transmitting material such as glass or Polyimide (PI).
As an alternative embodiment, the Light Emitting panel 10 is an Organic Light Emitting Diode (OLED) display panel.
Alternatively, the light emitting element 1 includes a first electrode, a second electrode, and a light emitting structure between the first electrode and the second electrode on the light emitting substrate 101. One of the first electrode and the second electrode is an anode, and the other is a cathode. The light emitting structure may further include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Injection Layer (EIL), or an Electron Transport Layer (ETL). The light emitting element 1 may include a red light emitting element, a green light emitting element, and a blue light emitting element, or may also include light emitting elements of other colors. The light-emitting substrate 101 may be made of a light-transmitting material such as glass or Polyimide (PI).
Due to the problems of warping, unevenness, breakage, light interception, black edge cutting and the like, which are common at the splicing position of the light-emitting panels 10, two light-emitting panels 10 spliced to each other generate a gap dark line at the splicing position. In order to improve the brightness at the splicing gap, optionally, the light supplement element 2 is any one of an LED, a Micro-LED and a Mini-LED, and the brightness of the light supplement area SA can be improved by adjusting the light emitting intensity of the light supplement element 2, so that the light emitting tone of the light supplement area SA is consistent with the light emitting tone of the display area AA, and the light emitting quality of the light emitting module is improved.
Further optionally, the light supplement element 2 is of the same type as the light emitting element 1, for example, both are LED, micro-LED or Mini-LED, so that the light emitting color tone of the light supplement area SA is the same as the light emitting color tone of the display area AA. When the light-emitting panel 10 is an OLED display panel, the light-compensating element 2 is an LED, a Micro-LED or a Mini-LED, and the light intensity of the light-compensating element 2 is adjusted to make the light-emitting brightness of the light-compensating area SA consistent with that of the display area AA as much as possible.
The embodiment of the application provides a pair of light-emitting module, including two at least luminescent panels 10 of mutual concatenation, light-emitting module still includes the district AA of display area and light filling district SA, and the district AA of display area corresponds with every luminescent panel 10, and the district SA of light filling corresponds with the region of two at least luminescent panels 10 mutual concatenations, and light filling district SA includes light filling component 2. The light supplementing element 2 can improve the brightness of the splicing position, improve the problem that dark lines are generated at the splicing position of the light emitting panels 10 spliced with each other, and improve the light emitting quality of the light emitting module.
As shown in fig. 2, in order to splice two adjacent light-emitting panels 10, in some embodiments, the light-emitting module further includes a support frame 4, the support frame 4 is located on a side of the light-emitting panel 10 away from the light-emitting surface and corresponds to the light supplement area SA, and at least two light-emitting panels 10 are spliced with each other through the support frame 4.
Specifically, the support frame 4 includes a first support portion 41, a second support portion 42, and a third support portion 43, and the third support portion 43 connects the first support portion 41 and the second support portion 42. The first supporting portion 41 is fixedly connected to one light emitting substrate 101, the second supporting portion 42 is fixedly connected to the other light emitting substrate 101, and the third supporting portion 43 protrudes in a direction away from the light emitting panel 10, so that the supporting frame 4 and the light compensating element 2 do not interfere with each other structurally. The way of fixedly connecting the first and second support portions 41 and 42 to the light emitting panel 10 includes, for example, but not limited to, a screw connection, a welding connection, or an adhesive connection.
Fig. 3 is a schematic cross-sectional view of the light emitting module shown in fig. 1 along a direction B-B.
In some embodiments, the light supplement area SA further includes a light supplement substrate 102, and the light supplement element 2 is located on a side of the light supplement substrate 102 facing the light emitting surface. The light supplement substrate 102 and the light emitting substrate 101 are electrically connected through a flexible circuit board F. A light supplement wiring layer is disposed on the light supplement substrate 102 and electrically connected to the light supplement element 2. A light-emitting wiring layer is provided on the light-emitting substrate 101, and the light-emitting wiring layer is electrically connected to the light-emitting element 1. The light supplementing substrate 102 is electrically connected with the light emitting substrate 101 through a flexible circuit board F, and a control chip is arranged on the flexible circuit board F and used for supplying power to the light emitting element 1 and the light supplementing element 2 and controlling the light emitting element 1 and the light supplementing element 2 to be turned on and off.
When the light emitting panel 10 is an OLED display panel or an LED display panel, the light emitting wiring layer and the light supplementing wiring layer are Thin Film Transistor (TFT) array layers, and are formed on the light emitting substrate 101 by using a Low Temperature Polysilicon (LTPS) technology or an Indium Gallium Zinc Oxide (IGZO) technology.
The positive and negative electrodes of the light emitting element 1 on each light emitting panel 10 are connected to a driving circuit of the light emitting wiring layer, and the driving circuit can control the on/off and brightness of the light emitting element 1 by controlling the current, thereby achieving the purpose of display. The positive electrode and the negative electrode of the light supplementing element 2 are respectively connected with a driving circuit of the light supplementing wiring layer, and the driving circuit can control the on/off and the brightness of the light supplementing element 2 through controlling current, so that the purpose of light supplementing display is achieved.
When the light emitting panel 10 is a backlight unit, the light emitting element 1 emitting white light as described above is disposed on a printed circuit board or a flexible circuit board. The positive and negative electrodes of the light emitting element 1 on each light emitting panel 10 are connected to a driving circuit of the light emitting wiring layer, respectively, and the driving circuit can control the on/off and brightness of the light emitting element 1 by controlling the current; the positive electrode and the negative electrode of the light supplementing element 2 are respectively connected with a driving circuit of the light supplementing wiring layer, and the driving circuit can control the on/off and the brightness of the light supplementing element 2 by controlling current, so that a backlight source is provided for the LCD display panel.
In some embodiments, as shown in fig. 2 or fig. 3, the light supplement area SA of the light emitting module further includes a light guide layer 3 covering the light supplement element 2, and one side of the light guide layer 3 away from the light supplement element 2 is flush with the light emitting surface of the light emitting panel 10.
Optionally, the light guide layer 3 is a film, a plate or a tube filled with a transparent light guide material. Optionally, one side that leaded light layer 3 deviates from light filling element 2 is arc, spherical, the setting of particle shape, and perhaps, one side that leaded light layer 3 deviates from light filling element 2 has peak and trough of crisscross distribution for increase luminous angle. Optionally, grid points are provided in the light guiding layer 3 for adjusting the optical effect.
In addition, when the light emitting element 1 or the light supplement element 2 is an LED, a Micro-LED or a Mini-LED, each light emitting element 1 or the light supplement element 2 generally includes a light emitting body and a phosphor glue layer G coated on an outer surface of the light emitting body, and the phosphor glue layer G can improve a light emitting effect. Due to the small size of Micro-LEDs or Mini-LEDs, they are usually made in a batch transfer manner. In order to improve the efficiency, the whole fluorescent powder glue layer G can be laid on the outer surface of the light-emitting bodies of the Micro-LEDs or the Mini-LEDs, and one side of the light guide layer 3 departing from the light supplementing element 2 is flush with one side of the fluorescent powder glue layer G departing from the light-emitting bodies. The light guide layer 3 is arranged in such a way, so that the light emitting uniformity of the whole light emitting module can be improved, and the display effect of uneven brightness is avoided.
In some embodiments, when the light-emitting panel 10 is a backlight module, the light-emitting module further includes a reflective layer (not shown), and the reflective layer is located on a side of the light-filling element 2 away from the light-emitting surface. The reflective layer is made of opaque material, and optionally, the reflective layer may be a sheet member made of plastic material with high reflectivity, such as polyethylene terephthalate (PET), polycarbonate (PC) and Polystyrene (PS). When the light provided by the light-emitting panel 10 exits to the light-emitting surface, part of the light is guided out from the side away from the light-emitting surface, and the reflective layer can reflect the light guided out from the light-emitting surface to the light-emitting surface again, which is beneficial to improving the light-emitting effect of the light-emitting panel 10.
In order to further improve the light emitting effect of the light emitting panel 10, optionally, the reflective layer is further located on a side of the light guiding layer 3 facing the light compensating element 2. Optionally, the reflective layer is also located on the side of the light guiding layer 3 facing the light emitting element 1. Optionally, the reflection layer is located on one side of the light supplement element 2 away from the light emitting surface, one side of the light guide layer 3 facing the light supplement element 2, and one side of the light guide layer 3 facing the light emitting element 1.
Fig. 4 is a schematic top view and fig. 5 is a schematic cross-sectional view of the light emitting module according to an alternative embodiment of the present disclosure.
As shown in fig. 4 and 5, the embodiment of the present application further provides a light emitting module, which is similar to the light emitting module shown in fig. 1 to 3, except that the light emitting substrate 101 of each light emitting panel 10 further includes a connecting portion 12, the connecting portion 12 is disposed around a partial edge of the main body portion 11, and the light supplement element 2 is located at the connecting portion 12.
Specifically, the light-emitting substrate 101 has a first surface 13 and a second surface 14 opposite to each other, the first surface 13 is located on the light-emitting surface side, and the connection portion 12 is formed by recessing the first surface 13 of the light-emitting substrate 101 toward the second surface 14. The light supplement element 2 is located on one side of the connection portion 12 facing the light emitting surface.
As shown in fig. 5, the two light emitting panels 10 have a rectangular structure, and a connecting portion 12 is provided at one short side, and the connecting portion 12 of the light emitting substrate 101 of one light emitting panel 10 and the main body portion 11 of the light emitting substrate 101 of the other light emitting panel 10 are connected to each other by the support frame 4, so that the two light emitting panels 10 are joined to each other. It is understood that when four light emitting panels 10 are spliced to each other, one long side of each light emitting panel 10 is also provided with the connecting portion 12.
The light supplement element 2 is located on one side of the connection portion 12 facing the light emitting surface. Optionally, the height of the light supplement element 2 is smaller than the depth of the recess of the connection portion 12 from the first surface 13 to the second surface 14, so as to prevent light emitted by the light supplement element 2 from diffusing to the display area AA and affecting the display effect of the display area AA.
In this embodiment, since the light supplement element 2 is located at the connecting portion 12 of the light emitting substrate 101, the light supplement element 2 can share the light emitting circuit with the light emitting element 1 located at the main body portion 11 of the light emitting substrate 101, so that it is not necessary to separately provide a substrate for arranging the light supplement circuit for the light supplement element 2, which is beneficial to reducing the thickness of the light emitting module.
Fig. 6 is a schematic top view structure diagram of a light emitting module according to another alternative embodiment of the present application, fig. 7 is a schematic spliced structure diagram of the light emitting panel shown in fig. 6, fig. 8 is a schematic cross-sectional structure diagram of fig. 6 along a direction D-D, fig. 9 is an enlarged schematic cross-sectional structure diagram of a region E of fig. 8, and fig. 10 is a schematic cross-sectional structure diagram of the light emitting panel of the light emitting module according to another alternative embodiment of the present application along a direction D-D.
As shown in fig. 6 to 9, the present embodiment further provides a light emitting module, which is similar to the light emitting module shown in fig. 4 and 5, except that the structure of the connection portion 12 of the light emitting substrate 101 is different.
Specifically, as shown in fig. 7, the connecting portion 12 includes a plurality of convex portions 121 extending from the edge of the main body portion 11 toward the adjacent light-emitting substrates 101, the convex portions 121 of the two light-emitting panels 10 joined to each other are nested with each other to form an accommodating space O, and the light fill-in element 2 is located in the accommodating space O.
The light compensating element 2 includes a first electrode 111 and a second electrode 112, a first pad W1 is disposed at an edge of one of the main body portions 11 corresponding to the accommodating space O, a second pad W2 is disposed at an edge of the other main body portion 11 corresponding to the accommodating space O, the first electrode 111 is electrically connected to the first pad W1, and the second electrode 112 is electrically connected to the second pad W2. Either one of the first electrode 111 and the second electrode 112 is a positive terminal, and the other is a negative terminal.
The outer surface of the main body portion 11 of the light emitting substrate 101 is coated with a conductive layer 103 and an insulating layer 104, the insulating layer 104 is located on one side of the conductive layer 103 away from the main body portion 11, and a through hole is formed in the insulating layer 104 corresponding to the position of the light supplement element 2 to expose the conductive layer, so that a first bonding pad W1 or a second bonding pad W2 is formed. In addition, the insulating layer 104 is provided with two through holes spaced apart to expose the conductive layer at positions corresponding to the light emitting elements 1, thereby forming third pads W3. Two electrodes of the light emitting element 1 are electrically connected to the third pads W3, respectively.
Alternatively, the convex portion 121 of the light emitting substrate 101 and the main body portion 11 of the adjacent two other light emitting substrates 101 are connected to each other by magnetic force. For example, the convex portion 121 of one of the light emitting substrates 101 is coated with a first magnetic material, and the main body portions 11 of two adjacent light emitting substrates 101 are coated with a second magnetic material, the first magnetic material and the second magnetic material having opposite magnetism. Two adjacent light-emitting panels 10 are connected together by a magnetic force therebetween to achieve the splicing.
Alternatively, the convex portion 121 of the light-emitting substrate 101 and the main body portion 11 of another adjacent light-emitting substrate 101 are connected to each other by means of adhesive bonding. For example, the convex portion 121 of one of the light emitting substrates 101 and the main body portion 11 of the adjacent two other light emitting substrates 101 are respectively coated with an adhesive, and the adjacent two light emitting panels 10 are connected together by an adhesive force therebetween to achieve the splice. Optionally, the adhesive is transparent to avoid affecting the light emitting display function of the light emitting panel 10. Therefore, the spliced positions between the light-emitting panels 10 spliced with each other can be displayed uniformly, the formation of obvious seams at the spliced positions due to the problem of nonuniform display is avoided, and the feasibility of the seamless splicing technology is improved.
Alternatively, the convex portion 121 of the light-emitting substrate 101 and the main body portion 11 of the other adjacent light-emitting substrate 101 are connected to each other by soldering. For example, the convex portion 121 of one of the light-emitting substrates 101 and the main body portions 11 of two adjacent light-emitting substrates 101 are welded together by thermal welding to realize the splicing.
In some embodiments, as shown in fig. 10, in order to prevent at least two light emitting panels 10 that are mutually spliced by the connecting portion 12 from bending, deforming or even breaking when receiving an external force in a direction perpendicular to the light emitting panels 10, the light emitting module further includes a supporting frame 4, the supporting frame 4 is located on a side of the light emitting panel 10 that faces away from the light emitting surface and corresponds to the light supplement area SA, and the at least two light emitting panels 10 are mutually spliced by the supporting frame 4.
Specifically, the support frame 4 includes a first support portion 41, a second support portion 42, and a third support portion 43, and the third support portion 43 connects the first support portion 41 and the second support portion 42. The first supporting portion 41 is fixedly connected to one light emitting substrate 101, the second supporting portion 42 is fixedly connected to the other light emitting substrate 101, and the third supporting portion 43 protrudes in a direction away from the light emitting panel 10, so that the supporting frame 4 and the light compensating element 2 do not interfere with each other structurally. The way of fixedly connecting the first and second support portions 41 and 42 to the light emitting panel 10 includes, for example, but not limited to, a screw connection, a welding connection, or an adhesive connection.
In addition, the embodiment of the application also provides a backlight module which comprises any one of the light-emitting modules. The light emitting module comprises at least two light emitting panels 10 spliced with each other, and each light emitting panel 10 is a sub backlight module. The light-emitting module further comprises a display area AA and a light supplement area SA, the display area AA corresponds to each light-emitting panel 10, the light supplement area SA corresponds to an area where at least two light-emitting panels 10 are spliced, and the light supplement area SA comprises a light supplement element 2. The light supplementing element 2 can improve the brightness of the splicing position, prevent the light emitting panels 10 spliced with each other from generating dark lines at the splicing position, and improve the light emitting quality of the backlight module.
In addition, an embodiment of the present application further provides a display device, including: any of the aforementioned light emitting modules. The display device can be an OLED display device with any size, an LED display device with any size, and a liquid crystal display device comprising the backlight module.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.

Claims (11)

1. The utility model provides a luminous module, its characterized in that includes two at least luminescent panels of mutual concatenation, luminous module still includes:
a display area corresponding to each of the light emitting panels;
the light supplementing area corresponds to an area where the at least two light emitting panels are spliced with each other, and comprises a light supplementing element;
the light-emitting panel comprises a light-emitting substrate and a plurality of light-emitting elements, wherein the light-emitting substrate comprises a main body part, and the plurality of light-emitting elements are arranged on the main body part;
the light supplementing element is positioned on one side of the light emitting element, which is far away from the light emitting surface;
the light-emitting substrate further comprises a connecting part which is arranged around part of the edge of the main body part; the light supplementing element is positioned at the connecting part;
the connecting part comprises a plurality of convex parts extending from the edge of the main body part to the adjacent light-emitting substrates, and the convex parts of the two mutually spliced light-emitting substrates are mutually nested and form an accommodating space; the light supplementing element is positioned in the accommodating space;
the light filling element comprises a first electrode and a second electrode, the accommodating space corresponds to one of the main body portions, a first bonding pad is arranged at the edge of the main body portion, the accommodating space corresponds to the other main body portion, a second bonding pad is arranged at the edge of the main body portion, the first electrode is electrically connected with the first bonding pad, and the second electrode is electrically connected with the second bonding pad.
2. The light emitting module of claim 1, wherein the light compensation area further comprises a light compensation substrate, and the light compensation element is located on one side of the light compensation substrate facing the light emitting surface;
the light supplementing substrate is electrically connected with the light emitting substrate through a flexible circuit board.
3. The light emitting module of claim 1, wherein the light emitting substrate has a first surface and a second surface opposite to each other, the first surface is located on the light emitting surface side, and the connecting portion is formed by recessing the first surface of the light emitting substrate toward the second surface;
the light supplementing element is located on one side, facing the light emitting surface, of the connecting portion.
4. The lighting module according to claim 1, wherein the protrusion of the light-emitting substrate and the main body of another adjacent light-emitting substrate are connected to each other by any one of magnetic force, adhesive bonding and welding.
5. The illumination module according to any one of claims 1 to 4, further comprising a support frame, wherein the support frame is located on a side of the light-emitting panel away from the light-emitting surface and corresponds to the light supplement area, and the at least two light-emitting panels are spliced with each other through the support frame.
6. The light-emitting module according to claim 1, wherein the light compensation region further includes a light guide layer covering the light compensation element, and a side of the light guide layer away from the light compensation element is flush with a light-emitting surface of the light-emitting panel.
7. The illumination module according to claim 6, wherein the light guide layer is a film, a plate or a tube filled with a transparent light guide material; or one side of the light guide layer, which is far away from the light supplementing element, is arranged in an arc shape, a spherical shape or a particle shape; or, one side of the light guide layer, which is far away from the light supplementing element, is provided with wave crests and wave troughs which are distributed in a staggered manner; or, set up the grid point in the leaded light layer.
8. The illumination module as claimed in claim 6, further comprising a reflective layer disposed on a side of the light supplement element facing away from the light exit surface.
9. The illumination module as claimed in claim 8, wherein the reflective layer is further disposed on a side of the light guide layer facing the light compensating element;
and/or the reflecting layer is also positioned on one side of the light guide layer facing the light-emitting element.
10. A backlight module, comprising: a lighting module according to any one of claims 1 to 9.
11. A display device, comprising: the light emitting module according to any one of claims 1 to 9.
CN202110257329.6A 2021-03-09 2021-03-09 Light-emitting module, backlight module and display device Active CN112863390B (en)

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