CN114779521A - Dot-matrix backlight module and display screen using same - Google Patents
Dot-matrix backlight module and display screen using same Download PDFInfo
- Publication number
- CN114779521A CN114779521A CN202111520291.3A CN202111520291A CN114779521A CN 114779521 A CN114779521 A CN 114779521A CN 202111520291 A CN202111520291 A CN 202111520291A CN 114779521 A CN114779521 A CN 114779521A
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- China
- Prior art keywords
- dot matrix
- light
- backlight module
- dot
- matrix backlight
- Prior art date
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Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 82
- 239000000853 adhesive Substances 0.000 claims abstract description 23
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- 239000003292 glue Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims description 16
- 239000008393 encapsulating agent Substances 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 abstract description 23
- 238000005538 encapsulation Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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Images
Classifications
-
- 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
- G02F1/133608—Direct backlight including particular frames or supporting means
Abstract
The application provides a dot matrix backlight unit, dot matrix backlight unit includes: dot matrix light-emitting component and diffusion sheet, dot matrix light-emitting component include the base plate, set up luminous element and the encapsulation that are the dot matrix arrangement on the base plate and glue, the encapsulation glue sets up on the base plate and surrounds in luminous element so that luminous element keeps away from the base plate and forms the binding face, diffusion sheet is in the same place through adhesion thing and binding face bonding. The application also provides a display screen using the dot-matrix backlight module. Above-mentioned dot matrix backlight unit is because dot matrix light-emitting component is relatively fixed through the adhesion with the board that looses for dot matrix backlight unit is whole more frivolous, makes the installation more simple and convenient because frivolous appearance simultaneously. In addition, the dot-matrix backlight module can limit the degree of thermal expansion of the light diffusion plate due to the fact that the dot-matrix light-emitting component and the light diffusion plate are fixed relatively through the adhesive, so that the light diffusion plate is not easy to deform and damage, and the service life of the display screen is prolonged.
Description
Technical Field
The application relates to the field of display screens, in particular to a dot-matrix backlight module.
Background
Along with the development of science and technology, the technique of display screen is more and more high, the display screen can be divided into CCFL backlight unit and LED backlight unit from the classification of light source, because LED has energy-conservation, long service life's characteristics, most liquid crystal display has all adopted LED backlight unit at present, its dot matrix backlight unit can reduce the thickness of display screen, but diffusion sheet probably takes place deformation because of the reason of temperature in the structure of current dot matrix backlight unit, lead to the display screen to break, damage. Affecting the normal use of the display screen. On the other hand, the existing production process of the dot-matrix backlight module is time-consuming and labor-consuming, dark spots are easy to appear in the flatness and the light efficiency, and the using effect of the display screen is influenced.
Therefore, it is an urgent need to solve the problem of making the structure of the dot-matrix backlight module light and light without cracking and damage due to the temperature influence.
Disclosure of Invention
The application provides a dot matrix backlight unit and applied dot matrix backlight unit's display screen for dot matrix backlight unit is whole more frivolous, simultaneously because frivolous appearance makes the installation more simple and convenient, restriction diffusion sheet is because the degree of thermal expansion makes the diffusion sheet be difficult to warp, and is not fragile, thereby promotes the life of display screen.
In a first aspect, an embodiment of the present application provides a dot-matrix backlight module, which includes: dot matrix light-emitting component and diffusion sheet, dot matrix light-emitting component include the base plate, set up luminous element and the encapsulation that are the dot matrix and arrange on the base plate and glue, the encapsulation glue sets up on the base plate and surrounds in luminous element so that one side that luminous element kept away from the base plate forms the binding face, the diffusion sheet is in the same place through adhesion thing and binding face bonding.
Optionally, the substrate is a flexible substrate.
Optionally, the encapsulation adhesive surrounds the light emitting element.
Optionally, the encapsulant is opaque.
Optionally, the encapsulation adhesive is transparent.
Optionally, each light emitting element is encapsulated inside the encapsulation glue.
Optionally, the packaging adhesive is formed in a rectangular parallelepiped shape, and the light emitting element is embedded in the packaging adhesive.
Optionally, the abutting face is a plane.
Optionally, the adhesive is glue with diffuse reflection function.
In a second aspect, an embodiment of the present application provides a display screen using a dot matrix backlight module, where the display screen using the dot matrix backlight module includes:
an optical module;
LCD module, and
the dot matrix backlight module is arranged on one side of the LCD module, the light diffusion plate faces the LCD module, and the dot matrix backlight module is used for driving the LCD module to work.
Above-mentioned dot matrix backlight unit, dot matrix light-emitting component and diffusion sheet, dot matrix light-emitting component include the base plate, set up in light-emitting component and encapsulation that are the dot matrix arrangement on the base plate are glued, the encapsulation glue set up in on the base plate and surround in light-emitting component so that light-emitting component keeps away from the base plate forms the binding face, diffusion sheet through adhesion with the binding face bonding is in the same place. The application also provides a display screen using the dot-matrix backlight module. Above-mentioned dot matrix backlight unit is because dot matrix light-emitting component is relatively fixed through the adhesion with the board that looses for dot matrix backlight unit is whole more frivolous, makes the installation more simple and convenient because frivolous appearance simultaneously. In addition, the dot-matrix backlight module can limit the degree of thermal expansion of the light diffusion plate due to the fact that the dot-matrix light-emitting component and the light diffusion plate are fixed relatively through the adhesive, so that the light diffusion plate is not easy to deform and damage, and the service life of the display screen is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of the application and that other drawings may be derived from the structure shown in the drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1a is a schematic front view of a dot matrix backlight module according to a first embodiment of the present disclosure.
Fig. 1b is a schematic side view of a dot matrix backlight module according to a first embodiment of the present application.
Fig. 2 is a schematic diagram of an internal structure of a dot-matrix light emitting device according to a first embodiment of the present disclosure.
Fig. 3 is a schematic view of a bonding surface formed by package glue according to a first embodiment of the present disclosure.
Fig. 4 is a schematic view of a bonding surface formed by a package adhesive according to a second embodiment of the present disclosure.
Fig. 5 is a schematic view of a display screen using a dot matrix backlight module according to a first embodiment of the present application.
The implementation, functional features and advantages of the object of the present application will be further explained with reference to the embodiments, and with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be implemented in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the descriptions in this application referring to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Please refer to fig. 1a, fig. 1b and fig. 2 in combination, which are schematic front and side structural diagrams of a dot matrix backlight module 100 according to a first embodiment of the present disclosure. The dot matrix backlight module 100 according to the first embodiment of the present application includes a dot matrix light emitting device 10 and a light diffusion plate 20. The dot matrix light emitting assembly 10 includes a substrate 11, light emitting elements 12 arranged in a dot matrix on the substrate, and a package adhesive 13. The encapsulation adhesive 13 is disposed on the substrate 11 and surrounds the light emitting device 12, and is used for encapsulating the light emitting device 12, and a bonding surface 30 is formed on a side of the light emitting device 12 away from the substrate 11. In the present embodiment, the substrate 11 is a flexible substrate. The packaging adhesive 13 has light transmittance and is made of hot melt adhesive. The light emitting element 12 is an LED lamp bead. When the light emitting element 12 is packaged by the packaging adhesive 13, the packaging adhesive 13 is heated to be in a molten state to tightly coat the light emitting element 12, and then the light emitting element 12 is cooled and solidified to complete the packaging of the light emitting element 12. The adhesive 40 is made of glue with diffuse reflection function.
The light-diffusing plate 20 includes an incident surface 102 facing the dot matrix backlight unit 100 and a diffusing surface 104 opposite to the incident surface 102. The incident surface 102 and the reflecting surface 104 are flat surfaces. The incident surface 102 of the light-diffusing plate 20 is adhered to the attachment surface 30 by the adhesive 40, so that the light-diffusing plate 20 and the array light-emitting assembly 10 are attached to each other by adhesion.
When the dot matrix backlight module 100 is in operation, the light emitted from the light emitting element 12 can be transmitted to the light diffusion plate 20 through the packaging adhesive 13, and the light can be diffused by the light diffusion plate 20.
Above-mentioned dot matrix backlight unit is because dot matrix light emitting component passes through adhesion 40 relatively fixed with the diffusion sheet, and the whole face and the laminating of dot matrix light emitting component 10 of diffusion sheet 20 can restrict diffusion sheet 20 because the degree of being heated inflation for diffusion sheet 20 is difficult to warp and is damaged, thereby promotes dot matrix backlight unit 100's life. In addition, the dot-matrix backlight module 100 is relatively fixed to the light-diffusing plate 20 by the adhesive 40, so that the dot-matrix backlight module 100 is thinner and more convenient to mount.
Please refer to fig. 3, which is a schematic view of a bonding surface formed by package glue according to a first embodiment of the present application. The light emitting element 12 is covered in the encapsulation glue 13, and a flat bonding surface 30 is formed at one end of the encapsulation glue 13 far away from the substrate 11. Further, the package adhesive 13 is formed in a rectangular parallelepiped shape, and the light emitting element 12 is embedded in the package adhesive 13. In this embodiment, the sealing paste 13 is transparent, and the light emitting element 12 is transmitted through the sealing paste 13.
Please refer to fig. 4, which is a schematic view of a bonding surface formed by package glue according to a second embodiment of the present application. In some possible embodiments, the light emitting element 12 is surrounded by the encapsulant 13, and the light emitting element 12 is exposed from an end away from the substrate 11 to the encapsulant 13. In the present embodiment, the sealing compound 13 may have a light-transmitting property, and it is understood that the sealing compound 13 may not have a light-transmitting property.
Please refer to fig. 5 in combination, the present application further provides a display screen 200 using the dot matrix backlight module, wherein the display screen 200 using the dot matrix backlight module includes an LCD module 201 and a dot matrix backlight module 100. Further, the dot matrix type backlight module 100 is disposed at one side of the LCD module 201, and the light-diffusing plate 20 is disposed toward the LCD module 201, and the dot matrix type backlight module 100 is used for driving the LCD module 201 to operate. It is understood that the display 200 further includes optical modules (not shown). Because the display screen 200 adopts the dot matrix backlight module, the dot matrix light-emitting assembly 10 and the light-diffusing plate 20 are relatively fixed through the adhesive 40, so that the degree of thermal expansion of the light-diffusing plate 20 can be limited, the light-diffusing plate 20 is not easy to deform and is damaged, and the service life of the display screen 200 is prolonged. In addition, the dot-matrix backlight module 100 is relatively fixed to the light-diffusing plate 20 by the adhesive, so that the display screen 200 is lighter and more convenient to assemble.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, to the extent that such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, it is intended that the present application also encompass such modifications and variations.
The above list is only for the preferred embodiment of the present application, and certainly, the scope of the present application should not be limited thereto, and therefore, the equivalent changes made to the claims of the present application should be made to the scope of the present application.
Claims (10)
1. The utility model provides a dot matrix backlight unit which characterized in that, dot matrix backlight unit includes: the dot matrix type light-emitting component comprises a substrate, light-emitting elements arranged in a dot matrix manner on the substrate, and packaging glue, wherein the packaging glue is arranged on the substrate and surrounds the light-emitting elements so that the light-emitting elements are far away from one side of the substrate to form a binding surface, and the light-diffusing plate is bonded with the binding surface together through an adhesive.
2. The dot matrix backlight module according to claim 1, wherein the substrate is a flexible substrate.
3. The dot matrix backlight module according to claim 1, wherein the encapsulant surrounds the light emitting elements.
4. The dot matrix backlight module according to claim 3, wherein the encapsulant is opaque.
5. The dot matrix backlight module according to claim 1, wherein the encapsulant is transparent.
6. The dot matrix backlight module according to claim 5, wherein each of the light emitting elements is encapsulated inside the encapsulant.
7. The dot-matrix backlight module according to claim 5, wherein the encapsulant is formed in a rectangular parallelepiped shape, and the light emitting elements are embedded in the encapsulant.
8. The dot matrix backlight module according to claim 1, wherein the attaching surface is a plane.
9. The dot matrix type backlight module according to claim 1, wherein the adhesive is a glue with a diffuse reflection function.
10. The utility model provides an use dot matrix backlight unit's display screen which characterized in that, use dot matrix backlight unit's display screen includes:
LCD module, and
the dot matrix backlight module according to any one of claims 1-9, wherein the dot matrix backlight module is disposed at a side of the LCD module, and a light-diffusing plate of the dot matrix backlight module is disposed toward the LCD module, and the dot matrix backlight module is configured to drive the LCD module to operate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111520291.3A CN114779521A (en) | 2021-12-13 | 2021-12-13 | Dot-matrix backlight module and display screen using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111520291.3A CN114779521A (en) | 2021-12-13 | 2021-12-13 | Dot-matrix backlight module and display screen using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114779521A true CN114779521A (en) | 2022-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111520291.3A Pending CN114779521A (en) | 2021-12-13 | 2021-12-13 | Dot-matrix backlight module and display screen using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114779521A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070070270A1 (en) * | 2005-09-28 | 2007-03-29 | Chuan-Pei Yu | Display |
| CN103913889A (en) * | 2012-12-31 | 2014-07-09 | 上海天马微电子有限公司 | Liquid crystal display device with built-in light source |
| CN208421467U (en) * | 2018-06-08 | 2019-01-22 | 深圳市瑞丰光电子股份有限公司 | A kind of backlight module, display device and its electronic equipment |
| CN209624946U (en) * | 2018-12-28 | 2019-11-12 | 深圳Tcl新技术有限公司 | A kind of down straight aphototropism mode set and television set |
| CN111045253A (en) * | 2019-12-30 | 2020-04-21 | 华为技术有限公司 | Backlight module and liquid crystal display device |
| CN111095088A (en) * | 2018-10-19 | 2020-05-01 | 深圳市珏琥显示技术有限公司 | Backlight module and display device |
-
2021
- 2021-12-13 CN CN202111520291.3A patent/CN114779521A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070070270A1 (en) * | 2005-09-28 | 2007-03-29 | Chuan-Pei Yu | Display |
| CN103913889A (en) * | 2012-12-31 | 2014-07-09 | 上海天马微电子有限公司 | Liquid crystal display device with built-in light source |
| CN208421467U (en) * | 2018-06-08 | 2019-01-22 | 深圳市瑞丰光电子股份有限公司 | A kind of backlight module, display device and its electronic equipment |
| CN111095088A (en) * | 2018-10-19 | 2020-05-01 | 深圳市珏琥显示技术有限公司 | Backlight module and display device |
| CN209624946U (en) * | 2018-12-28 | 2019-11-12 | 深圳Tcl新技术有限公司 | A kind of down straight aphototropism mode set and television set |
| CN111045253A (en) * | 2019-12-30 | 2020-04-21 | 华为技术有限公司 | Backlight module and liquid crystal display device |
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