CN109521600A - A kind of backlight module and its display device - Google Patents
A kind of backlight module and its display device Download PDFInfo
- Publication number
- CN109521600A CN109521600A CN201811240613.7A CN201811240613A CN109521600A CN 109521600 A CN109521600 A CN 109521600A CN 201811240613 A CN201811240613 A CN 201811240613A CN 109521600 A CN109521600 A CN 109521600A
- Authority
- CN
- China
- Prior art keywords
- backlight module
- glue frame
- light guide
- guide plate
- diffuser plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- 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
Abstract
It includes: glue frame that the present invention, which provides a kind of backlight module and its display device, the backlight module, and groove is equipped with inside the glue frame, and the bottom portion of groove is plane, and two sides are equipped with sloped sidewall；Reflector is set in the glue frame bottom plane；Light source is set on the reflector；Diffuser plate is set in the glue frame；Luminance compensation structure is set between the glue frame and the diffuser plate；The present invention between glue frame and diffuser plate by being arranged luminance compensation structure, under the premise of meeting the optical components support structure designs such as ultra-narrow frame backlight module internal diffuser plate, compensates the brightness of edge dark space, promotes display effect, meet module displays quality requirements.
Description
Technical field
The present invention relates to field of liquid crystal display more particularly to a kind of backlight module and its display devices.
Background technique
Backlight is one of key component of liquid crystal flat panel display, using LED as the liquid crystal flat-plate television of backlight and biography
The cold-cathode fluorescence lamp backlight of system is compared, and LED backlight is with gamut range is wide, color reducibility is good, brightness range is adjusted
Greatly, the advantages that long service life.LED liquid crystal flat panel display is different according to the position that light source is arranged, and is divided into straight-down negative and sidelight
Formula.LED light source is directly placed on light-emitting surface for direct-light-type backlight in the following, the light of light source sending is after the diffusion of diffuser plate mixing
It is emitted as area source.
The design of traditional straight-down negative modular structure as shown in Figure 1, light source 104 is set in glue frame 101, what light source 104 issued
Light is mixed by the diffusion of diffuser plate 102, is emitted in the form of area source, by optical diaphragm 103, finally reached
Glass substrate.Under the premise of frame 106 is enough big, the length of backlight module luminous zone will be equal to or more than the effective of glass substrate
The length of viewing area 105；
After the length of frame becomes smaller, as shown in Fig. 2, 207 length of frame becomes smaller, because of the limit of back light module unit structure design
System, the light that light source 204 issues can be hidden before by optical diaphragm 203 by the part that light mixing cavity 201 is contacted with diffuser plate 202
Gear, the part that light mixing cavity 201 is contacted with diffuser plate 202 are the area Mang Guang 209, and the area Mang Guang 209 leads to the effective aobvious of glass substrate
Show that 205 length of area can be greater than the length of backlight module luminous zone 208, therefore will cause glass substrate frame edge dark space 206, shadow
Ring module displays quality.
In conclusion existing backlight module has that frame edge dark space, module displays are poor quality.Therefore have must
A kind of backlight module is provided to improve this defect.
Summary of the invention
The present invention provides a kind of backlight module and its display device, for solve the prior art there are frame edge dark space,
The bad problem of display quality.
A kind of backlight module provided by the invention, the backlight module include:
Glue frame, the glue frame inside are equipped with groove, and the bottom portion of groove is plane, and two sides are equipped with sloped sidewall；
Reflector is set in the glue frame bottom plane；
Light source is set on the reflector；
Diffuser plate is set in the glue frame；
Luminance compensation structure is set to the area Mang Guang between the glue frame and the diffuser plate.
According to one preferred embodiment of the present invention, the luminance compensation structure includes being set to leading between glue frame and diffuser plate
Tabula rasa.
According to one preferred embodiment of the present invention, the light guide plate bottom is provided with reflection bar.
According to one preferred embodiment of the present invention, the light guide plate is edge-type light guide plate.
According to one preferred embodiment of the present invention, the light guide plate bottom is equipped with site micro-structure.
According to one preferred embodiment of the present invention, the light guide plate bottom is equipped with the groove-shaped micro-structure of V
According to one preferred embodiment of the present invention, two lateral roof of glue frame is equipped with convex portion, and the convex portion is used
In preventing the luminance compensation structure to be offset to both sides under external force.
According to one preferred embodiment of the present invention, the length of the backlight module luminous zone is effective aobvious not less than glass substrate
Show the length in area.
According to one preferred embodiment of the present invention, the sloped sidewall is equipped with reflecting layer.
According to one preferred embodiment of the present invention, the display device includes the described in any item backlight moulds of claim 1-9
Group, the display device further include liquid crystal display panel.
Beneficial effects of the present invention: the present invention is being met by the way that luminance compensation structure is arranged between glue frame and diffuser plate
Under the premise of the optical components support structure designs such as ultra-narrow frame backlight module internal diffuser plate, the brightness of edge dark space is compensated, is mentioned
Display effect is risen, module displays quality requirements are met.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram of prior art backlight module；
Fig. 2 is another structural schematic diagram of prior art backlight module；
Fig. 3 is the structural schematic diagram of backlight module provided by the invention.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
The present invention is described further in the following with reference to the drawings and specific embodiments:
The present embodiment provides a kind of backlight modules, the backlight module is described in detail below in conjunction with Fig. 3.
Backlight module provided in this embodiment includes: glue frame 301, light guide plate 302, reflection bar 305, diffuser plate 303, optics
Diaphragm 304, reflector 306 and light source 307.
Groove is equipped with inside glue frame 301, the bottom portion of groove is plane, and reflector 306 is arranged in 301 bottom of glue frame
In plane, light source 307 is arranged on reflector 306；Diffuser plate 303 is set to the top of glue frame 301, positioned at light source 307 just on
Side；The both sides of 301 interior grooves of glue frame are equipped with sloped sidewall, and sloped sidewall is equipped with reflecting layer, can reflect by light source 307
The light being irradiated on sloped sidewall issued.
Light guide plate 302 and reflection bar 305 constitute luminance compensation structure, and light guide plate 302 is set to glue frame 301 and diffuser plate
The area Mang Guang 312 between 303, reflection bar 305 are fitted in 302 bottom of light guide plate；It is square that 301 liang of lateral roofs of glue frame, which are equipped with section,
The bulge-structure of shape, the protrusion is to prevent light guide plate 302 to be offset to both sides under the effect of external force.
In the present embodiment, what light guide plate 302 was selected is bar shaped edge-type light guide plate.
In the present embodiment, light guide plate 302 can be bar shaped edge-type light guide plate.As shown in figure 3, being set to glue frame 301
The light that the light source 307 of bottom issues, enters light guide plate 302 from side, by the scattering process of light guide plate 302, destroys light
The total reflection of line is projected the light entered from side uniformly from the front of light guide plate, is existed in the prior art to improve
Edge dark space defect.
In the present embodiment, in order to obtain preferably reflecting effect, the bottom of light guide plate 302 is equipped with micro-structure (in figure not
Show), the light that can propagate script in the form of total reflection in light guide plate is exhaled to front.
In some embodiments, in order to obtain preferably reflecting effect, the micro-structure can be diffusion site micro-structure.
Site is non-uniform to be distributed in light guide plate bottom, spreads on site when light is mapped to, makes light since site includes micro-structure
The direction of propagation change, occur scattering process.
In some embodiments, the micro-structure is also possible to the groove-shaped micro-structure of V, and micro-structure is arranged at light guide plate bottom
Portion, two inclined-planes of slot only play reflected light because special processing prevents light from penetrating.Using side light source between cable
The linear light sorurce launched from light source 307 is converted to area source by the luminous effects such as refraction, reflection and the diffusing reflection of formation.?
In the present embodiment, because of the limitation of backlight module structural design, meeting the optics such as diffuser plate 303, luminance compensation structure
Under the premise of the function of support and the fixation of element, the frame 308 of glass substrate 309 cooperates concrete structure design, in order to
Dark space is avoided the occurrence of, the length 311 of backlight module luminous zone should be equal to the length of 309 effective display area 310 of glass substrate.
In some embodiments, in order to avoid there is dark space, the length 311 of backlight module luminous zone can also be greater than glass
The length of substrate effective display area 310.
The present invention is being met in ultra-narrow frame backlight mould group by the way that luminance compensation structure is arranged between glue frame and diffuser plate
Under the premise of the optical components support structure designs such as portion's diffuser plate, the brightness of edge dark space is compensated, display effect is promoted, meets mould group
Display quality requirement.
Although above preferred embodiment is not to limit in conclusion the present invention is disclosed above with preferred embodiment
The present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention is on the basis of the range that claim defines.
Claims (10)
1. a kind of backlight module, which is characterized in that the backlight module includes:
Glue frame, the glue frame inside are equipped with groove, and the bottom portion of groove is plane, and two sides are equipped with sloped sidewall；
Reflector is set in the glue frame bottom plane；
Light source is set on the reflector；
Diffuser plate is set in the glue frame；
Luminance compensation structure is set to the area Mang Guang between the glue frame and the diffuser plate.
2. backlight module as described in claim 1, which is characterized in that the luminance compensation structure includes being set to glue frame and expansion
Light guide plate between falling apart.
3. backlight module as claimed in claim 2, which is characterized in that the light guide plate bottom is provided with reflection bar.
4. backlight module as claimed in claim 2, which is characterized in that the light guide plate is edge-type light guide plate.
5. the backlight module that claim 2 is stated, which is characterized in that the light guide plate bottom is equipped with site micro-structure.
6. the backlight module that claim 2 is stated, which is characterized in that the light guide plate bottom is equipped with the groove-shaped micro-structure of V
7. backlight module described in claim 1, which is characterized in that two lateral roof of glue frame is equipped with convex portion, described
Convex portion is for preventing the luminance compensation structure to be offset to both sides under external force.
8. backlight module described in claim 1, which is characterized in that the length of the backlight module luminous zone is not less than glass base
The length of the effective display area of plate.
9. backlight module as described in claim 1, which is characterized in that the sloped sidewall is equipped with reflecting layer.
10. a kind of display device, which is characterized in that the display device includes the described in any item backlight moulds of claim 1-9
Group, the display device further include liquid crystal display panel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240613.7A CN109521600A (en) | 2018-10-23 | 2018-10-23 | A kind of backlight module and its display device |
| PCT/CN2018/116857 WO2020082479A1 (en) | 2018-10-23 | 2018-11-22 | Backlight module and display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240613.7A CN109521600A (en) | 2018-10-23 | 2018-10-23 | A kind of backlight module and its display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109521600A true CN109521600A (en) | 2019-03-26 |
Family
ID=65773038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811240613.7A Pending CN109521600A (en) | 2018-10-23 | 2018-10-23 | A kind of backlight module and its display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109521600A (en) |
| WO (1) | WO2020082479A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018594A (en) * | 2019-04-29 | 2019-07-16 | 惠州市华星光电技术有限公司 | Backlight module and display module |
| CN110297359A (en) * | 2019-06-29 | 2019-10-01 | 厦门天马微电子有限公司 | A kind of curved surface backlight module and curved-surface display device |
| CN111179745A (en) * | 2019-07-31 | 2020-05-19 | 友达光电股份有限公司 | Backlight module |
| CN111175868A (en) * | 2020-01-22 | 2020-05-19 | 京东方科技集团股份有限公司 | Diffusion plate, liquid crystal display screen and spliced wall display screen |
| WO2021003855A1 (en) * | 2019-07-09 | 2021-01-14 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113064302A (en) * | 2021-03-29 | 2021-07-02 | 京东方科技集团股份有限公司 | Display module and electronic equipment |
| CN113534521A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame and display module |
| CN113543560A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN114326207A (en) * | 2021-12-27 | 2022-04-12 | 广州华星光电半导体显示技术有限公司 | Backlight module and display device |
| CN114624924A (en) * | 2022-03-22 | 2022-06-14 | 北京京东方显示技术有限公司 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110018594A (en) * | 2019-04-29 | 2019-07-16 | 惠州市华星光电技术有限公司 | Backlight module and display module |
| CN110018594B (en) * | 2019-04-29 | 2020-09-01 | 惠州市华星光电技术有限公司 | Backlight module and display module |
| CN110297359B (en) * | 2019-06-29 | 2022-01-07 | 厦门天马微电子有限公司 | Curved surface backlight unit and curved surface display device |
| CN110297359A (en) * | 2019-06-29 | 2019-10-01 | 厦门天马微电子有限公司 | A kind of curved surface backlight module and curved-surface display device |
| WO2021003855A1 (en) * | 2019-07-09 | 2021-01-14 | 武汉华星光电技术有限公司 | Backlight module and display device |
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| CN111175868A (en) * | 2020-01-22 | 2020-05-19 | 京东方科技集团股份有限公司 | Diffusion plate, liquid crystal display screen and spliced wall display screen |
| CN111175868B (en) * | 2020-01-22 | 2022-09-06 | 京东方科技集团股份有限公司 | Diffusion plate, liquid crystal display screen and spliced wall display screen |
| CN113064302A (en) * | 2021-03-29 | 2021-07-02 | 京东方科技集团股份有限公司 | Display module and electronic equipment |
| CN113534521A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame and display module |
| CN113543560A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN113543560B (en) * | 2021-08-02 | 2024-02-02 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN114326207A (en) * | 2021-12-27 | 2022-04-12 | 广州华星光电半导体显示技术有限公司 | Backlight module and display device |
| CN114624924A (en) * | 2022-03-22 | 2022-06-14 | 北京京东方显示技术有限公司 | Display device |
| CN114624924B (en) * | 2022-03-22 | 2023-08-22 | 北京京东方显示技术有限公司 | display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020082479A1 (en) | 2020-04-30 |
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