CN110824774B - Backlight structure and display panel - Google Patents
Backlight structure and display panel Download PDFInfo
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- CN110824774B CN110824774B CN201911176991.8A CN201911176991A CN110824774B CN 110824774 B CN110824774 B CN 110824774B CN 201911176991 A CN201911176991 A CN 201911176991A CN 110824774 B CN110824774 B CN 110824774B
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- structures
- support
- openings
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- backlight
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
According to the backlight structure and the display panel, the backlight structure comprises a lamp panel, a diffusion plate and a plurality of supporting structures, wherein the supporting structures are arranged between the lamp panel and the diffusion plate at intervals and comprise a top end structure, a bottom structure and a connecting part connected between the top end structure and the bottom structure; the diffusion plate in the backlight structure is provided with a plurality of openings, and at least one opening is abutted against the supporting structure, so that the light mixing distance can meet the product specification, and the problems of small space and difficulty in placing a supporting piece caused by thinning are solved.
Description
Technical Field
The application relates to the field of display, in particular to a backlight structure and a display panel.
Background
Because of small size, the sub-millimeter light emitting diode (Mini-LED) can greatly reduce the size of the display panel when being used as a backlight source of the display panel. On the other hand, because of the small size of the mini-LED, the mini-LED can be matched with a display panel to control a plurality of subareas, so that each subarea can be driven to emit light independently.
The Mini-LED size and pitch (pitch), and the required mixing distance are key parameters for the overall thickness and cost. In a large-sized product, limited by the product thinning specification and the light emitting characteristics of the light emitting diode, when the light mixing distance is less than a certain distance, for example, 5mm, and the pitch is also less than a certain distance, for example, 10mm, at this time, the placement space of the conventional heat dissipation support is limited, and it is difficult to provide sufficient support between the large-sized display panel and the Mini-LED. On the other hand, as the number of partitions increases, an Active Matrix (AM) driving method is proposed, which uses a Thin Film Transistor (TFT) structure formed on a glass substrate, and the glass substrate cannot be perforated, so that the placement position of the heat dissipation supporting member and the supporting method become problems to be solved for large-sized products.
Disclosure of Invention
In order to ensure that the light mixing distance is maintained to meet the requirement of a large-size display panel and solve the problems of small space and difficulty in placing a supporting piece caused by thinning in the application of a sub-millimeter light emitting diode (Mini-LED) to a large-size backlight source, the application provides a backlight structure. The backlight structure includes: the lamp panel comprises a plurality of sub-millimeter light emitting diodes arranged on a substrate; the diffusion plate is positioned above the lamp panel and provided with an upper surface and a lower surface which are oppositely arranged, and the lower surface faces the lamp panel; the support structures are arranged between the lamp panel and the diffusion plate at intervals and comprise top end structures, bottom end structures and connecting parts connected between the top end structures and the bottom end structures; the diffusion plate is provided with a plurality of openings, the openings and the support structures are arranged in a one-to-one mode, at least one opening and the corresponding support structure abut against the junction of the top end structure of the support structure and the connecting portion, and the size of the connecting portion is larger than that of the at least one opening.
In an embodiment, the top structure of at least one of the plurality of supporting structures is a semi-cylinder, a cylinder or a square cylinder, and the top structure has the same shape as the opening corresponding to the diffuser plate.
In one embodiment, the plurality of openings are circular and have a diameter of less than 15 mm.
In one embodiment, the plurality of openings have a diameter in the range of 5-8 mm.
In one embodiment, the connecting portion of at least one of the plurality of supporting structures is a cylindrical or conical body.
In an embodiment, at least one of the plurality of supporting structures is a triangular plate, the top end structure of the triangular plate is sleeved in the opening, and one side of the triangular plate is attached to the circular truncated cone.
In an embodiment, the lamp panel is formed by splicing a plurality of lamp strips, and the plurality of supporting structures are respectively arranged above the joints where the plurality of lamp strips are spliced.
In one embodiment, at least one of the plurality of support structures has a reflective coating, and a surface of the reflective coating is a mirror structure.
In one embodiment, the method further comprises applying a transparent glue between at least one of the plurality of openings and at least one of the plurality of support structures, the transparent glue connecting the support structures to the diffuser plate.
The present application further provides a display panel, the backlight structure of the display panel.
The application provides a structure and display panel are shaded, and the diffuser plate that sees through in the structure of being shaded has a plurality of trompils, and at least one trompil is leaned on with bearing structure counterbalance, can let the mixed light distance accord with the product specification, solves the problem that the space that the slimming caused is little, be difficult to place support piece simultaneously.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the present disclosure, the drawings needed to be used in the description of the embodiments or the present disclosure will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a backlight structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a support structure provided in an embodiment of the present invention;
FIG. 3 is a schematic view of another support structure provided in accordance with an embodiment of the present invention; and
fig. 4 is a schematic view of another supporting structure according to an embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
The application provides a structure in a poor light, the diffuser plate that sees through in the structure in a poor light has a plurality of trompils, and at least one trompil is leaned on with bearing structure counterbalance, can let the mixed light distance accord with the product specification, solves the problem that the space that the slimming caused is little, be difficult to place support piece simultaneously.
Referring to fig. 1, fig. 1 is a schematic view of a backlight structure provided in an embodiment of the present invention, the backlight structure includes a lamp panel 100, a diffuser plate 200 is located above the lamp panel 100, the lamp panel 100 includes a plurality of sub-millimeter light emitting diodes disposed on a substrate 110, a plurality of support structures 120 are disposed between the lamp panel 100 and the diffuser plate 200 at intervals, and each support structure 120 includes a top structure 121, a bottom structure 122, and a connecting portion 123 connected between the top structure 121 and the bottom structure 122. The diffuser plate 200 has a plurality of openings 210, and at least one of the openings 210 and one of the support structures abut against an interface between the top end structure 121 and the connecting portion 123, wherein the size of the connecting portion 123 is larger than that of the at least one opening 210. Specifically, the diffuser plate has an upper surface and a lower surface opposite to each other, and the lower surface faces the lamp panel 100.
The plurality of supporting structures 120 in the backlight structure may be columns, cones, triangular plates, or any other shape, that is, the plurality of supporting structures 120 in the backlight structure may be composed of supporting structures 120 with various shapes, as long as the respective supporting structures 120 can be sleeved on the corresponding openings 210 of the diffusion plate 200 to provide support, so as to position and maintain the light mixing distance to meet the product specification. The shape of the support structure 120 is not limited by this application.
Referring to fig. 1 and fig. 2, fig. 2 is a schematic view of a supporting structure according to an embodiment of the present invention. As shown in fig. 2, the top structure 121 of the supporting structure 120 is a cylinder, the bottom structure 122 is a conical cylinder, the connecting portion 123 is also a conical cylinder, the cross-sectional area and shape of the top end of the connecting portion 123 are equal to the cross-sectional area and shape of the cylinder of the top structure 121, and the cross-sectional area and shape of the bottom of the connecting portion 123 are equal to the cross-sectional area and shape of the top end of the bottom structure 122, wherein the top structure 121 and the opening 210 at the corresponding position of the diffuser plate 200 have the same shape, the top structure 121 can be sleeved in the corresponding opening, and since the size of the conical cylinder of the connecting portion 123 is larger than the size of the opening 210, the.
In another embodiment, please refer to fig. 1 and fig. 3, and fig. 3 is a schematic view of another supporting structure according to an embodiment of the present invention. As shown in fig. 3, the top structure 121 of the supporting structure 120 is a semi-cylinder, the bottom structure 122 is a circular truncated cone, the connecting portion 123 is a cylinder, the diameter of the cylinder of the connecting portion 123 is equal to the diameter of the semi-cylinder of the top structure 121, the top structure 121 of the semi-cylinder is sleeved in the corresponding opening 210, and since the difference of the cross-sectional area between the connecting portion 123 of the cylinder and the top structure 121 of the semi-cylinder is equal to that in the horizontal direction, the 1/2 circular area of the top surface of the connecting portion 123 provides the support and the support for the diffusion plate 200. In practical applications, the top structure 121 may also be a column with a diameter smaller than the connecting portion 123, and the bottom of the connecting portion 123 may be welded to a circular truncated cone 122, such as the bottom structure 122 shown in fig. 3, or welded to the pad, as long as the pad area is larger than the column diameter, and the shape of the pad is not limited. In addition, the top structure can be a square column instead of the semi-cylinder or the cylindrical body, and the size of the top structure can be sleeved in the corresponding opening to provide positioning fit in the horizontal direction as long as the corresponding opening is matched in shape.
Fig. 4 is a schematic view of another supporting structure according to an embodiment of the present invention, as shown in fig. 4, the supporting structure is a triangular plate, one corner of the triangular plate, i.e., the top structure 121, is sleeved on the opening 210, one side of the triangular plate, i.e., the bottom of the connecting portion 123, is welded or attached to the circular truncated cone 122, and since the size of the connecting portion 123 has a length greater than that of the opening 210 in the horizontal direction, the diffuser plate 200 is supported and supported. Preferably, the support structure is integrally formed.
Wherein, the supporting structure 120 can be further coated with a reflective coating, and the surface of the reflective coating is a mirror structure. Or the supporting structure is made of a material with heat dissipation and high reflection. The reflective coating can reflect light irradiated onto the support structure 120 toward the diffusion plate 200, improving the light utilization efficiency of the backlight source. The mirror structure can further improve the reflection effect of the support structure 120.
In practice, according to the requirement of the product, the transparent glue is coated between the at least one opening and the corresponding support structure, so that the transparent glue connects the support structure to the diffusion plate 200, thereby increasing the firmness of the product. Specifically, the transparent glue is coated on the upper surface of the diffusion plate 200 adjacent to the opening 210 to coat the inner wall of the opening 210, or the transparent glue may be coated on the entire upper surface of the diffusion plate 200. Alternatively, transparent glue is applied to the top structure 121 of the support structure 120 and then fitted into the opening 210.
In one embodiment, the holes of the diffuser 200 are circular, for example, with a diameter less than 15 mm; preferably, the diameter of the circle is in the range of 5-8 mm.
In an embodiment, the lamp panel 100 may be formed by a plurality of light bars, and the plurality of supporting structures 120 are respectively disposed above the joints 101 of adjacent light bars.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (5)
1. A backlight structure, comprising:
the lamp panel comprises a plurality of sub-millimeter light emitting diodes arranged on a substrate;
the diffusion plate is positioned above the lamp panel and provided with an upper surface and a lower surface which are oppositely arranged, and the lower surface faces the lamp panel; and
the support structures are arranged between the lamp panel and the diffusion plate at intervals and comprise top end structures, bottom end structures and connecting parts connected between the top end structures and the bottom end structures;
the diffusion plate is provided with a plurality of openings, the openings and the support structures are arranged in a one-to-one mode, at least one opening and the corresponding support structure abut against the junction of the top end structure of the support structure and the connecting part, and the size of the connecting part is larger than that of the opening;
the top end structure of at least one of the plurality of supporting structures is a columnar body, and the shape of the top end structure is the same as that of the opening corresponding to the diffusion plate;
the plurality of openings are circular, and the circular diameter of the openings is less than 15 mm;
the lamp plate is formed by a plurality of lamp strip concatenations setting, a plurality of bearing structure set up respectively adjacent the junction top of a plurality of lamp strip concatenations.
2. The backlight structure of claim 1, wherein the connecting portion of at least one of the plurality of support structures is a pillar or a cone.
3. The backlight structure according to claim 1, wherein at least one of the plurality of support structures has a reflective coating, and a surface of the reflective coating is a mirror structure.
4. The backlight structure of claim 1, further comprising a transparent glue applied between at least one of the openings and the corresponding support structure, the transparent glue connecting the support structure to the diffuser plate.
5. A display panel characterized in that it comprises a backlight structure according to any one of claims 1-4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911176991.8A CN110824774B (en) | 2019-11-26 | 2019-11-26 | Backlight structure and display panel |
| PCT/CN2019/128019 WO2021103233A1 (en) | 2019-11-26 | 2019-12-24 | Backlight structure and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911176991.8A CN110824774B (en) | 2019-11-26 | 2019-11-26 | Backlight structure and display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110824774A CN110824774A (en) | 2020-02-21 |
| CN110824774B true CN110824774B (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911176991.8A Active CN110824774B (en) | 2019-11-26 | 2019-11-26 | Backlight structure and display panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110824774B (en) |
| WO (1) | WO2021103233A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113467127B (en) * | 2021-05-31 | 2022-08-05 | 惠科股份有限公司 | Backlight module and display device |
| CN115061310A (en) * | 2022-06-20 | 2022-09-16 | Tcl华星光电技术有限公司 | Backlight module and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204084213U (en) * | 2014-09-11 | 2015-01-07 | 深圳Tcl新技术有限公司 | Diffuser plate support member and backlight module |
| CN106019701A (en) * | 2016-05-31 | 2016-10-12 | 青岛海信电器股份有限公司 | Direct type backlight module and liquid crystal display device |
| CN205643971U (en) * | 2016-04-01 | 2016-10-12 | 友达光电股份有限公司 | Backlight module and support column |
| CN109613758A (en) * | 2019-02-02 | 2019-04-12 | 京东方科技集团股份有限公司 | Backlight module and display device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100208161A1 (en) * | 2009-02-19 | 2010-08-19 | Victor Company Of Japan, Limited | Backlight device and liquid crystal display |
| JP5511072B2 (en) * | 2010-08-05 | 2014-06-04 | パナソニック株式会社 | Backlight device and liquid crystal module |
| JP5597091B2 (en) * | 2010-10-13 | 2014-10-01 | 株式会社エンプラス | Lighting device |
| CN104214608B (en) * | 2014-09-09 | 2017-03-15 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106773302B (en) * | 2016-12-30 | 2020-02-28 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
-
2019
- 2019-11-26 CN CN201911176991.8A patent/CN110824774B/en active Active
- 2019-12-24 WO PCT/CN2019/128019 patent/WO2021103233A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204084213U (en) * | 2014-09-11 | 2015-01-07 | 深圳Tcl新技术有限公司 | Diffuser plate support member and backlight module |
| CN205643971U (en) * | 2016-04-01 | 2016-10-12 | 友达光电股份有限公司 | Backlight module and support column |
| CN106019701A (en) * | 2016-05-31 | 2016-10-12 | 青岛海信电器股份有限公司 | Direct type backlight module and liquid crystal display device |
| CN109613758A (en) * | 2019-02-02 | 2019-04-12 | 京东方科技集团股份有限公司 | Backlight module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021103233A1 (en) | 2021-06-03 |
| CN110824774A (en) | 2020-02-21 |
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