CN113359341B - Display module, manufacturing method thereof and mobile terminal - Google Patents

Display module, manufacturing method thereof and mobile terminal Download PDF

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Publication number
CN113359341B
CN113359341B CN202110702256.7A CN202110702256A CN113359341B CN 113359341 B CN113359341 B CN 113359341B CN 202110702256 A CN202110702256 A CN 202110702256A CN 113359341 B CN113359341 B CN 113359341B
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guide plate
light guide
light
opening
light source
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CN113359341A (en
Inventor
朱磊
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The application discloses display module assembly and manufacturing method, mobile terminal thereof, display module assembly includes: the backlight module is arranged on one side of the display panel and is provided with a first through hole; the backlight module includes: a light guide plate including an opening corresponding to the first through hole; the side light source is arranged at one end of the light guide plate; and the shading part is arranged in the opening and is positioned on the inner wall of one side of the opening close to the side light source. This application sets up shading portion through the one side that is close to the sidelight source at the opening edge, has solved because of the unstable and then influence display module finished product display effect's of extinction effect that has tolerance to lead to when installing because of silk screen black strip on the diffusion barrier and light guide plate.

Description

Display module, manufacturing method thereof and mobile terminal
Technical Field
The application relates to the technical field of display, in particular to a display module and a manufacturing method thereof, and a mobile terminal.
Background
With the technological progress, people's demands for electronic products are not limited to the functions of electronic devices, but also include the appearance of electronic devices; the full screen design is gradually enjoyed and sought after by users.
At present, a mobile phone camera is usually placed in a screen to improve the screen occupation ratio, so a backlight module needs to dig a hole and avoid a blank camera;
in the display module assembly of side light source, back light module group digs the hole after, and the through-hole that forms is close to the light source side and can form the bright line because the metal level reflection of light among the back light module assembly for the display effect of display module assembly is influenced to the finished product in a poor light near the through-hole display effect is uneven.
At present, adopt near light source side silk screen printing black strip near corresponding through-hole on the diffusion barrier to carry out extinction processing, nevertheless because backlight unit when the equipment, there is the tolerance when black strip of silk screen printing on the diffusion barrier assembles with the light guide plate, lead to the round hole to be close to the extinction effect of light source side unstable for display module assembly finished product is at round hole department display effect inequality.
Disclosure of Invention
The embodiment of the application provides a display module and a manufacturing method thereof, and a mobile terminal, and solves the problem that the light absorption effect is unstable due to tolerance when a silk-screen black strip and a light guide plate are installed on a diffusion film, so that the display effect of a finished display module is affected.
The embodiment of the application provides a display module, which comprises a display panel and a backlight module arranged on one side of the display panel, wherein the display module comprises an induction functional area, and the backlight module is provided with a first through hole corresponding to the induction functional area;
the backlight module includes:
the light guide plate is provided with an opening corresponding to the first through hole;
the side light source is arranged at one end of the light guide plate;
and the shading part is arranged in the opening and is positioned on the inner wall of one side of the opening close to the side light source.
In the display module assembly that this application provided, the shading portion with be formed with one between the light guide plate and be located first light trap in the opening, perpendicular in the direction of light guide plate, the orthographic projection of printing opacity sub-hole with the orthographic projection coincidence of first through-hole.
In the display module assembly that this application provided, in the direction perpendicular to the light guide plate, the orthographic projection of shading portion on the light guide plate at least partly with the orthographic projection coincidence of opening.
In the display module provided by the application, the thickness of the light shielding part at each position is equal in the direction from the light shielding part to the side light source.
In the display module provided by the application, the light shielding part at least comprises a first section close to the side light source and a second section far away from the side light source, and the thickness of the first section is larger than that of the second section in the direction from the light shielding part to the side light source.
In the display module provided by the application, the light shielding part comprises a first side surface close to the side light source and a second side surface far away from the side light source, the distances from the axis of the first through hole to any position of the first side surface are equal, and the distances from the axis of the first through hole to any position of the second side surface are equal.
In the display module provided by the application, the light shielding part comprises a first end part and a second end part which are arranged on the inner wall of the opening close to one side of the side light source, and a surrounding part connected between the first end part and the second end part, wherein the distance between the first end part and the second end part is smaller than or equal to the aperture of the opening.
In the display module assembly that this application provided, shading portion with light guide plate integrated into one piece.
The application also provides a manufacturing method of the display module, which comprises the following steps:
providing a display panel;
providing a backlight module which is arranged on one side of the display panel, wherein the display module comprises an induction function area, and a first through hole corresponding to the induction function area is formed in the backlight module; the backlight module is provided with a first through hole; the backlight module comprises a light guide plate and a side light source, wherein the light guide plate is formed on one side of the display panel, the side light source is formed at one end of the light guide plate, an opening corresponding to the first through hole is formed in the light guide plate, a shading part is formed in the opening, and the shading part is formed on the inner wall of the opening, close to one side of the side light source.
In the manufacturing method of the display module provided by the application, the light guide plate of the backlight module and the shading part arranged on the inner wall of the opening of the light guide plate are integrally formed.
The beneficial effects of the invention at least comprise:
this application is through setting up the shading portion on the light guide plate, and the shading portion is located the light guide plate opening and is close to one side of sidelight source, the bright line that the shading portion can effective absorption backlight unit goes up because of the metal level reflection of light produces, and the shading portion sets up in the opening, and the mode that the relative ratio silk seal black strip is gone up at the diffusion barrier at present has better extinction effect, has avoided the unable complete shading problem that light guide plate and diffusion barrier lead to because of assembly tolerance, has improved the off-the-shelf display effect of display module.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view illustrating reflection of a light path at a first through hole of a backlight module according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of a display module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of an opening of a light guide plate of a display module according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of an opening of a light guide plate of another display module provided in the embodiment of the present application;
fig. 5 is a schematic view of a partial structure of a light guide plate having equal thickness of light shielding portions of a display module according to an embodiment of the present disclosure;
FIG. 6 is a flow chart of the formation of a light guide plate and a light shielding part according to an embodiment of the present disclosure;
fig. 7 is a flowchart of a method for manufacturing a display module according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a display module and a manufacturing method thereof. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments. In addition, in the description of the present application, the term "including" means "including but not limited to". The terms first, second, third and the like are used merely as labels, and do not impose numerical requirements or an established order. Various embodiments of the invention may exist in a range of versions; it should be understood that the description in range format is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention.
At present, need dig the hole operation to display module assembly in display module assembly's production to inlay components and parts such as camera, touch-control sensing element etc. in display module assembly, realize higher account for the screen and compare, in process of production, when adopting the sidelight source as display module assembly's light source, because the refraction effect of light guide plate and the light reflex effect of framework, dig downthehole being close to light source side that corresponds on the light guide plate behind the hole and can appear the bright line, influence screen display effect.
At present, mainly adopt near the light side silk screen printing black strip that is close to the hole at diffusion barrier 60 to carry out the extinction processing effect, nevertheless because there is tolerance in backlight unit's equipment and the black strip silk screen printing on the diffusion barrier 60, lead to the black strip to be close to the extinction effect of light source side unstable, backlight unit's finished product is uneven in hole edge department display effect.
The present application provides a technical solution to effectively solve the above problems, and the technical solution of the present application is described with reference to specific embodiments, which are specifically shown in fig. 1 to 7.
The application provides a display module, as shown in fig. 2, a display panel 20 and a backlight module arranged at one side of the display panel 20, wherein the display module comprises an induction functional area, and the backlight module is provided with a first through hole 300 corresponding to the induction functional area;
the backlight module includes:
a light guide plate 10, the light guide plate 10 including an opening 103 corresponding to the first through hole 300;
a side light source disposed at one end of the light guide plate 10;
and a light shielding portion 101 disposed in the opening 103 and located on an inner wall of the opening 103 on a side close to the side light source.
Specifically, the display panel 20 may be a liquid crystal display panel 20, the position of the display panel 20 corresponding to the first through hole 300 may also be provided with a through hole, a related component not used for display, such as a camera or an element having a touch sensing function, may be disposed in the first through hole 300, and may be specifically set according to actual process requirements, the first through hole 300 on the backlight module may be a circular hole or an elliptical hole or a square hole, and the shape thereof is not limited, and may be adjusted according to actual process requirements.
Specifically, the backlight module is disposed on the non-display side of the display panel 20, and the backlight module may further include a frame 40 disposed on a side of the light guide plate 10 away from the display panel 20 and disposed around the first through hole 300, where the frame 40 includes a second light hole 403 corresponding to the first through hole 300; the frame 40 may be a metal frame, such as an iron frame or other composite material frame with a supporting function, and is disposed on a side surface of the light guide plate 10 away from the display panel 20, and the frame 40 and the light guide plate 10 may be connected by a rubber frame.
Specifically, the backlight module may further include a reflective film 30 disposed between the light guide plate 10 and the frame 40, and a diffusion film 60 disposed on a side of the light guide plate 10 close to the display panel 20.
Specifically, the side light source is located on a side surface of the light guide plate 10 that is not parallel to the display panel 20, and may be specifically a light incident surface of the light guide plate 10; the number of the side light sources may be single, and a specific use environment is that, because the light sources are side light sources, a bright portion and a dark portion exist at the opening 103 of the light guide plate 10, the frame body 40 and the light guide plate 10 are stacked, light refracted by the light guide plate 10 in the opening 103 is divergently diffused into the opening, a part of the diffused light is reflected by the edge of the second light-transmitting hole 403 of the frame body 40 and is converged onto the light guide plate 10 again, and a bright line is formed at one side of the opening 103 close to the side light sources, that is, the bright portion, so that the display effect of the display module is uneven.
Specifically, the shape of the light shielding portion 101 may be a long strip shape, a wedge shape, or the like, the specific shape is not limited, the light shielding portion 101 is disposed along the sidewall of the opening 103, the length of the light shielding portion 101 along the sidewall of the opening 103 does not exceed half of the circumference of the opening 103, the color of the light shielding portion 101 may be black, dark brown, or another color with a good light absorption effect, the light shielding portion 101 may be made of a substrate material the same as the light guide plate 10, the substrate material of the light guide plate 10 may be one of Polycarbonate (PC) or polymethyl methacrylate (PMMA), the light shielding portion 101 may be made of a black light absorption material, specifically, a black toner may be added to the substrate material of the light guide plate 10 and mixed, when the material of the light shielding portion 101 and the substrate material of the light guide plate 10 are different in color, a two-color injection molding process may be adopted for production, the manufacturing process is simplified, the requirement for manufacturing equipment is low, the light shielding effect is good, and the tolerance generated during assembly of the backlight module is effectively reduced.
It can be understood that, as shown in fig. 1, the present application provides a light shielding portion 101 on the sidewall of the opening 103 of the light guide plate 10, and the light shielding portion 101 is disposed on the side close to the side light source in the opening 103; part of light emitted by the side light source is refracted to the frame body 40 through the light guide plate 10, and is reflected by the frame body 40 at a position close to the light source in the opening 103 to form a bright line; through the position that forms the bright line at opening 103 sets up shading portion 101, make this bright line absorbed by shading portion 101, display module's display effect has effectively been promoted, set up shading portion 101 on light guide plate 10 and compare present silk screen printing black strip on diffuser film 60, on the one hand effectively reduced when diffuser film 60 and light guide plate 10 install because of there being tolerance to lead to the absorption effect instability of black strip, influence the off-the-shelf display effect of display module, on the other hand, the black strip of diffuser film 60 silk screen printing is on diffuser film 60 surface and light guide plate 10's shading portion 101 sets up on opening 103's lateral wall, better light absorption effect has.
In fig. 1 and 3 to 5, the light ray a is a light ray emitted from the side light source.
In one embodiment, a first light hole located in the opening 103 is formed between the light shielding portion 101 and the light guide plate 10; in a direction perpendicular to the light guide plate 10, an orthogonal projection of the first light transmission hole 103a coincides with an orthogonal projection of the first through hole 300.
Specifically, as shown in fig. 2, the light shielding part 101 may be understood as being embedded in the light guide plate 10 to be integrated with the light guide plate 10, and the orthographic projection of the first light transmission hole 103a and the first through hole 300 in the direction perpendicular to the light guide plate 10 overlaps.
It can be understood that, by adopting the technical scheme, the inner wall of the first through hole 300 is smooth, no obvious protruding structure exists, the production is more convenient, the first through hole 300 can be formed at one time, the production steps are effectively simplified, and no adverse effect is generated on the light inlet or touch induction of the sensing element in the first through hole 300.
In an embodiment, in a direction perpendicular to the light guide plate 10, an orthogonal projection of the light shielding portion 101 on the light guide plate 10 at least partially coincides with an orthogonal projection of the opening 103.
It is understood that any two positions on the inner wall of the first light-transmitting hole 103a may have the same or different distances from the axis 500 of the first through hole 300, that is, the inner wall of the first light-transmitting hole 103a may have a curved surface, as long as the light-shielding portion 101 can achieve the light-shielding effect.
In one embodiment, the thickness X of the light shielding portion 101 is equal in the direction from the light shielding portion 101 to the side light source.
In the direction from the light shielding portion 101 to the side light source, the light shielding portion 101 at any section in the orthogonal projection perpendicular to the light guide plate 10 includes at least a first side near the side light source and a second side farthest from the side light source, and a distance between the first side and the second side is a thickness X.
It can be understood that, as shown in fig. 4, in the direction from the light shielding portion 101 to the side light source, the thickness X of the light shielding portion 101 is equal at each position of the light shielding portion 101, so that the shape of the light shielding portion 101 is more uniform and symmetrical, the difficulty in manufacturing the light shielding portion 101 is effectively reduced, and the orthographic projection of the light shielding portion 101 in the direction perpendicular to the light guide plate 10 at least covers the area of the bright line on the light guide plate 10 in the direction perpendicular to the light guide plate 10, so that the light shielding portion 101 has a certain fault tolerance, and the light shielding effect is improved.
In one embodiment, the light shielding portion 101 includes at least a first segment near the side light source and a second segment far from the side light sourceThe thickness X of the first section is from the light shielding part 101 to the side light source1Is greater than the thickness X of the second section2。
Specifically, as shown in fig. 3, on the sidewall of the opening 103 of the light guide plate 10, the distance from the side light source is different, the width of the generated bright line is also different, and the thickness X of the light shielding portion 101 in different sections in the direction from the light shielding portion 101 to the side light source can be set according to the brightness of the bright line, for example, the brightness of the bright line far from the side light source is lower than that of the bright line far from the side light source, so the thickness X of the first section near the side light source is different1Compared with the thickness X far away from the second section of the side light source2Is large.
It can be understood that the thickness X of different sections of the light shielding portion 101 is adjusted according to the brightness of the bright line generated at the corresponding position, and compared with the case that the same sub-light shielding portion 101 is directly arranged, the display effect of the display module is better adjusted, the display brightness of the obtained product is more uniform, and the influence of light absorption of the light shielding portion 101 on the display effect of other normal display areas is reduced as much as possible.
In an embodiment, the light shielding portion 101 includes a first side surface 101a close to the side light source and a second side surface 101b far away from the side light source, the distance from the axis 500 of the first through hole 300 to any position of the first side surface 101a is equal, and the distance from the axis 500 of the first through hole 300 to any position of the second side surface 101b is equal.
It can be understood that, as shown in fig. 5, any position of the first side surface 101a of the light shielding portion 101 is equidistant from the axis 500 of the first through hole 300, and any position of the second side surface 101b is equidistant from the axis 500 of the first through hole 300; that is, the opening 103 is a circular hole, and the relative distances between the first side surface 101a and the second side surface 101b of any one section of the light shielding portion are equal, the technical scheme makes the structure and the shape of the light shielding portion 101 more regular, the preparation process is simpler, the preparation difficulty is reduced while the good light shielding effect is ensured, the production difficulty of the arc-shaped structure is lower than that of the polygonal structure, and the production cost can be effectively reduced.
In an embodiment, the light shielding portion 101 includes a first end portion disposed on an inner wall of the opening 103 on a side close to the side light source, a second end portion, and a surrounding portion connected between the first end portion and the second end portion, and a distance between the first end portion and the second end portion is smaller than or equal to a diameter of the opening 103.
Here, the aperture of the opening 103 refers to a distance value between two farthest positions on the opening 103, and the two positions are equidistant from the side light source.
It can be understood that, since the brightness of the bright line generated by the edge of the opening 103 is inversely related to the distance between the side wall of the opening 103 and the side light source, the brightness of the bright line generated by the closer distance is greater; in a single-side light source mode, the range of bright lines formed by the opening 103 is located at a half side of the opening 103 close to the side light source, and the other half side of the opening 103 away from the side light source is a dark side, and when the light shielding portion 101 is arranged on the dark side, the display brightness of the display module with the dark side is further reduced, so that the dark side is darker, and the display effect is affected; this technical scheme sets up shading portion 101 in the biggest scope of the side that probably produces the bright line, and shading portion 101 can not influence the demonstration of opening 103 lateral wall dark side for display module's display effect is more even.
The present application further provides a method for manufacturing a display module, as shown in fig. 7, including the following steps:
s1, providing a display panel 20;
s2, forming a backlight module on one side of the display panel 20, wherein the display module comprises an induction functional area, and a first through hole 300 corresponding to the induction functional area is formed in the backlight module; the backlight module comprises a light guide plate 10 formed on one side of the display panel and a side light source formed at one end of the light guide plate 10, wherein an opening 103 corresponding to the first through hole 300 is formed on the light guide plate 10, a light shielding part 101 is formed in the opening 103, and the light shielding part 101 is formed on the inner wall of the opening 103 close to one side of the side light source.
It can be understood that the display panel 20 may be a liquid crystal display panel 20, the backlight module may specifically include a diffusion film 60, a light guide plate 10, a reflection film 30, a frame 40 and a glue frame for encapsulating the diffusion film 60, the light guide plate 10 and the reflection film 30, which are sequentially disposed, one end of the light guide plate 10, specifically, a light incident surface of the light guide plate 10, is mounted with a side light source, and the side light source may be a light emitting diode assembly. The backlight module is provided with a first through hole 300 which penetrates through, the shading part 101 is arranged on the light guide plate 10, specifically corresponds to the opening 103 on the side wall close to the side light source, and is relatively compared with the current silk-screen black strip on the diffusion film 60.
In an embodiment, the light guide plate 10 and the light shielding portion 101 are both formed by injection molding.
Specifically, as shown in fig. 6, the light guide plate 10 is formed by using one mold, the opening 103 is formed, a part of the light shielding portion 101 is left, a black light shielding portion 101 is cast at a position corresponding to the light shielding portion 101 on the light guide plate 10 by using another mold, the first light transmission hole 103a is formed, and the black light shielding portion 101 can be cast by using a black mold; for example, when the base material of the light guide plate is PC, the material of the light shielding portion may be PC mixed with black toner.
It can be understood that, when the preparation raw materials of shading portion 101 do when light guide plate 10 preparation raw materials adds black toner, can adopt double-colored injection moulding technology to produce, adopt this scheme to make the preparation flow more retrench, manufacturing cost is lower, and shading effect is good, has effectively avoided present diffusion barrier 60 silk screen printing black strip to carry out the problem that shading effect is not good that shading scheme produced because of assembly tolerance when backlight unit assembles.
The application further provides a mobile terminal, which comprises the display module and a terminal main body, wherein the terminal main body and the display module are combined into a whole.
In summary, by arranging the light shielding portion 101 on the light guide plate 10, the light shielding portion 101 is located on the inner wall of the opening 103 of the light guide plate 10 near the side light source, the light shielding portion 101 can effectively absorb bright lines generated by light reflection of the metal layer on the backlight module, and the light shielding portion 101 is arranged in the opening 103, compared with the current method of printing black stripes on the diffusion film 60, the light absorbing effect is better, the problem that the light guide plate 10 and the diffusion film 60 cannot be completely shielded due to assembly tolerance is avoided, and the display effect of the finished display module is improved.
The display module, the manufacturing method thereof and the mobile terminal provided by the embodiment of the application are described in detail, a specific example is applied in the description to explain the principle and the implementation of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (6)

1. A display module is characterized by comprising a display panel and a backlight module arranged on one side of the display panel, wherein the display module comprises an induction function area, and a first through hole corresponding to the induction function area is arranged on the backlight module;
the backlight module includes:
the light guide plate is provided with an opening corresponding to the first through hole;
the side light source is arranged at one end of the light guide plate;
the shading part is arranged in the opening and is positioned on the inner wall of the opening close to one side of the side light source;
the light shielding part comprises a first end part, a second end part and a surrounding part, wherein the first end part and the second end part are arranged on the inner wall of the side of the opening close to the side light source, the surrounding part is connected between the first end part and the second end part, and the distance between the first end part and the second end part is smaller than or equal to the aperture of the opening;
the light shielding part at least comprises a first section close to the side light source and a second section far away from the side light source, and the thickness of the first section is larger than that of the second section in the direction from the light shielding part to the side light source;
the shading part and the light guide plate are of an integrally formed structure.
2. The display module according to claim 1, wherein a first light hole is formed between the light shielding portion and the light guide plate, and an orthogonal projection of the first light hole coincides with an orthogonal projection of the first through hole in a direction perpendicular to the light guide plate.
3. The display module according to claim 1, wherein an orthographic projection of the light shielding portion on the light guide plate in a direction perpendicular to the light guide plate at least partially coincides with an orthographic projection of the opening.
4. A manufacturing method of a display module is characterized by comprising the following steps:
providing a display panel;
forming a backlight module on one side of the display panel, wherein the display module comprises an induction functional area, and a first through hole corresponding to the induction functional area is formed in the backlight module; the backlight module comprises a light guide plate and a side light source, wherein the light guide plate is formed on one side of the display panel, the side light source is formed at one end of the light guide plate, an opening corresponding to the first through hole is formed in the light guide plate, a shading part is formed in the opening, and the shading part is formed on the inner wall of the opening, close to one side of the side light source;
the light shielding part comprises a first end part and a second end part which are arranged on the inner wall of the opening close to one side of the side light source, and a surrounding part connected between the first end part and the second end part, wherein the distance between the first end part and the second end part is smaller than or equal to the caliber of the opening;
the light shielding part at least comprises a first section close to the side light source and a second section far away from the side light source, and the thickness of the first section is larger than that of the second section in the direction from the light shielding part to the side light source;
the shading part and the light guide plate are of an integrally formed structure.
5. The method as claimed in claim 4, wherein the light guide plate and the light shielding portion are formed by injection molding.
6. A mobile terminal, comprising the display module according to any one of claims 1 to 3 and a terminal body, wherein the terminal body is integrated with the display module.
CN202110702256.7A 2021-06-24 2021-06-24 Display module, manufacturing method thereof and mobile terminal Active CN113359341B (en)

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