CN202769467U - Backlight module and liquid crystal display (LCD) device - Google Patents
Backlight module and liquid crystal display (LCD) device Download PDFInfo
- Publication number
- CN202769467U CN202769467U CN201220471256.7U CN201220471256U CN202769467U CN 202769467 U CN202769467 U CN 202769467U CN 201220471256 U CN201220471256 U CN 201220471256U CN 202769467 U CN202769467 U CN 202769467U
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- reflector plate
- lgp
- backlight module
- liquid crystal
- intersection
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Abstract
The utility model discloses a backlight module comprising a reflector plate and a light guide plate (LGP) arranged on the reflector plate. The LGP comprises a first portion with a wedge-shaped section and a second portion with a rectangular section. The reflector plate corresponding to a junction of the first portion of the LGP and the second portion of the LGP is partially disconnected. When the thermal expansion of the reflector plate in a hot and humid environment occurs, the expansion of the portion of the reflector plate corresponding to the second portion of the LGP can not be restricted by the portion of the reflector plate corresponding to the first portion of the LGP, and the portion of the reflector plate corresponding to the second portion of the LGP can expand and contract freely, therefore a folding and warping phenomenon caused by the restricted thermal expansion is eradicated and the hot and humid dependence of the backlight module is improved.
Description
Technical field
The utility model relates to flat panel display, particularly a kind of backlight module and liquid crystal indicator.
Background technology
At present, liquid crystal indicator has been widely used in the various electronic products as the display unit of electronic equipment, and backlight module then is a vitals in the liquid crystal indicator.
As shown in Figure 1, existing backlight module 100 comprises: backboard 101, be arranged at the glue frame 102 on the described backboard 101, be arranged at the reflector plate 103 on the described glue frame 102, be arranged at the LGP 104 on the described reflector plate 103, be arranged at the lamp source 105 of described LGP 104 1 sides, be arranged at the blooming piece 106 on the described LGP 104.Wherein, described blooming piece 106 comprises from the bottom to top successively: diffusion sheet 107, lower prismatic lens 108 and upper prismatic lens 109; Described lamp source 105 provides power supply by flexible PCB 110.
Above-mentioned backlight module 100 is after finishing hot and humid reliability test, and the inhomogeneous phenomenon of light-emitting area often can appear in the side near lamp source 105.As shown in Figure 2, by the liquid crystal indicator that above-mentioned backlight module 100 and liquid crystal display 111 form, after finishing hot and humid reliability test, the inhomogeneous phenomenon of the light-emitting area of described liquid crystal indicator can be more outstanding.Through the present application people discovery that studies for a long period of time, the main cause that the light-emitting area non-uniform phenomenon occurs is, reflector plate 103 is in the side near lamp source 105, be positioned at the LGP 104 of its top and the compacting of liquid crystal display 111, in hot and humid reliability test, its thermal expansion is restricted, and the fold warping phenomenon easily occurs, its fold warpage can't be recovered after temperature reduced, and caused at last light-emitting area inhomogeneous.In addition, because the one side that LGP 104 contacts with reflector plate 103 in lamp source 105 1 sides is minute surface, therefore in the position near lamp source 105 1 sides, Electrostatic Absorption easily occurs in described reflector plate 103 and LGP 104, make reflector plate 103 be subject to more restrictions in thermal expansion, further raised the incidence of fold warping phenomenon.
The utility model content
The utility model provides a kind of backlight module and liquid crystal indicator, solves the problem that the fold warpage easily occurs reflector plate, to reach the purpose that improves hot and humid reliability performance.
For addressing the above problem, the utility model provides a kind of backlight module, comprising:
One reflector plate;
Be arranged at the LGP on the described reflector plate, described LGP comprises that section is that first and the section of wedge shape is the second portion of rectangle;
Described reflector plate is corresponding to the first of LGP and at least part of disconnection of intersection of second portion.
Optionally, described reflector plate is broken into two parts fully corresponding to the first of described LGP and the intersection of second portion.
Optionally, described reflector plate adheres in the described first corresponding to the part of described first.
Optionally, described reflector plate partly disconnects corresponding to the first of described LGP and the intersection of second portion.
Optionally, described reflector plate disconnects corresponding to the mid portion of the intersection of the first of described LGP and second portion.
Optionally, be provided with the site on the first of described LGP and the second portion.
Optionally, the dot density of described first is less than the dot density of described second portion.
Optionally, also comprise:
One backboard;
Be arranged at the glue frame on the described backboard, described reflector plate is arranged on the described glue frame;
Be arranged at light source on the reflector plate of first's one side of described LGP; And
Be arranged at the blooming piece on the described LGP.
Optionally, described blooming piece comprises the diffusion sheet that is set in turn on the described LGP, lower prismatic lens and upper prismatic lens.
Accordingly, also provide a kind of liquid crystal indicator, comprise described backlight module.
The backlight module that the utility model provides comprises a reflector plate and is arranged at LGP on the described reflector plate, and described LGP comprises that section is that first and the section of wedge shape is the second portion of rectangle; Described reflector plate is corresponding to the first of LGP and at least part of disconnection of intersection of second portion.Because the reflector plate correspondence partly disconnects in first and second portion intersection, when thermal expansion occurs in reflector plate in hot and humid environment, the expansion of the reflector plate in the corresponding second portion can not be subject to the restriction of corresponding first internal reflection sheet, can free-extension, thereby stopped the fold warping phenomenon that occurs because thermal expansion is restricted, improved the hot and humid reliability performance of backlight module.
Description of drawings
Fig. 1 is the structural representation of backlight module of the prior art;
Fig. 2 is the structural representation of liquid crystal indicator of the prior art;
Fig. 3 is the structural representation of the backlight module of the utility model one embodiment;
Fig. 4 is the top view of reflector plate among the utility model one embodiment;
Fig. 5 is the top view of LGP among the utility model one embodiment;
Fig. 6 is the structural representation of liquid crystal indicator among the utility model one embodiment.
The specific embodiment
Core concept of the present utility model is, reflector plate is corresponding to the first of described LGP and at least part of disconnection of intersection of second portion.Because the reflector plate correspondence partly disconnects in first and second portion intersection, when thermal expansion occurs in reflector plate in hot and humid environment, the expansion of the reflector plate in the corresponding second portion can not be subject to the restriction of corresponding first internal reflection sheet, can free-extension, thus the fold warping phenomenon that occurs because thermal expansion is restricted stopped.
In order to make the purpose of this utility model, technical scheme and advantage are clearer, further elaborate below in conjunction with accompanying drawing.
As shown in Figure 3, the backlight module in one embodiment of the invention 200 comprises:
One backboard 201;
Be arranged at the glue frame 202 on the described backboard 201;
Be arranged at the reflector plate 203 on the described glue frame 202;
Be arranged at the LGP 204 on the described reflector plate 203, described LGP 204 comprises that section is the first 2041 of wedge shape and the second portion 2042 that section is rectangle;
Be arranged at the light source 205 on the reflector plate 203 of first's 2,041 one sides of described LGP 204;
Be arranged at the blooming piece 206 on the described LGP 204, described blooming piece 206 comprises diffusion sheet 207, lower prismatic lens 208 and the upper prismatic lens 209 that is set in turn on the described LGP 204.
As shown in Figure 4, described reflector plate 203 comprises first 2031, second portion 2032 and third part 2033, the first 2031 of described reflector plate 203 is corresponding to the first 2041 of described LGP 204, the second portion 2032 of described reflector plate 203 is corresponding to the second portion 2042 of described LGP 204, the third part 2033 of described reflector plate 203 is corresponding to described light source 205, at least part of disconnection of intersection of described first 2031 and second portion 2032.Assembling for the ease of backlight module, preferably, described reflector plate 203 disconnects corresponding to the mid portion of the intersection of the first 2041 of described LGP 204 and second portion 2042, two end portions still connects, reflector plate 203 still connects as a whole, therefore can finish in a step for the assembling of reflector plate 203.
As shown in Figure 5, be provided with the site on the first 2041 of described LGP 204 and the second portion 2042.In the described first 2041 interior sites that arrange, can avoid first 2041 and described reflector plate 203 to form minute surface absorption in this zone, even in hot and humid environment, also can free-extension corresponding to the reflector plate in the described first 2041, can be because of by LGP 204 minute surfaces absorption and can't expand, thus further avoided reflector plate 203 that the phenomenon of folds occurs.But, the Main Function of first 2041 is effectively to import second portion 2042 for the light with described light source 205, if the dot density in the first 2041 is too high, some light is penetrated from the surface of first 2041, and first 2041 is not effective bright dipping zone of described backlight module 200.Therefore, preferred, the dot density of described first 2041 is less than the dot density of described second portion 2042.
In another embodiment of the present invention, in order thoroughly to avoid corresponding to the reflector plate in the first 2041 also reflector plate 203 can being broken into two parts fully corresponding to the first 2041 of described LGP 204 and the intersection of second portion 2042 to the restriction corresponding to the reflector plate in the second portion 2042.In this case, for fear of because disappearance corresponding to the reflector plate of described first, and the backlight module light extraction efficiency that causes reduces, and reflector plate can be adhered to described LGP 204 firsts 2041 on the one side of reflector plate corresponding to the part of described first 2041.
Should be understood that, as shown in Figure 6, the liquid crystal indicator that is comprised of described backlight module 200 and liquid crystal display 210 also belongs to the scope of protection of the invention.
To sum up, the utility model at reflector plate corresponding to the first of described LGP and at least part of disconnection of intersection of second portion.Because the reflector plate correspondence partly disconnects in first and second portion intersection, when thermal expansion occurs in reflector plate in hot and humid environment, the expansion of the reflector plate in the corresponding second portion can not be subject to the restriction of corresponding first internal reflection sheet, can free-extension, thereby stopped the fold warping phenomenon that occurs because thermal expansion is restricted, improved the hot and humid reliability performance of backlight module.
Obviously, those skilled in the art can carry out various changes and modification to utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these revise and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these change and modification.
Claims (10)
1. backlight module comprises:
One reflector plate;
Be arranged at the LGP on the described reflector plate, described LGP comprises that section is that first and the section of wedge shape is the second portion of rectangle;
It is characterized in that, described reflector plate is corresponding to the first of described LGP and at least part of disconnection of intersection of second portion.
2. backlight module as claimed in claim 1 is characterized in that, described reflector plate is broken into two parts fully corresponding to the first of described LGP and the intersection of second portion.
3. backlight module as claimed in claim 2 is characterized in that, described reflector plate adheres in the described first corresponding to the part of described first.
4. backlight module as claimed in claim 1 is characterized in that, described reflector plate partly disconnects corresponding to the first of described LGP and the intersection of second portion.
5. backlight module as claimed in claim 4 is characterized in that, described reflector plate disconnects corresponding to the mid portion of the intersection of the first of described LGP and second portion.
6. backlight module as claimed in claim 4 is characterized in that, is provided with the site on the first of described LGP and the second portion.
7. backlight module as claimed in claim 6 is characterized in that, the dot density of described first is less than the dot density of described second portion.
8. such as the described backlight module of any one in the claim 1 to 7, it is characterized in that, also comprise:
One backboard;
Be arranged at the glue frame on the described backboard, described reflector plate is arranged on the described glue frame;
Be arranged at light source on the reflector plate of first's one side of described LGP; And
Be arranged at the blooming piece on the described LGP.
9. backlight module as claimed in claim 8 is characterized in that, described blooming piece comprises the diffusion sheet that is set in turn on the described LGP, lower prismatic lens and upper prismatic lens.
10. a liquid crystal indicator is characterized in that, described liquid crystal indicator comprises such as the described backlight module of any one among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220471256.7U CN202769467U (en) | 2012-09-14 | 2012-09-14 | Backlight module and liquid crystal display (LCD) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220471256.7U CN202769467U (en) | 2012-09-14 | 2012-09-14 | Backlight module and liquid crystal display (LCD) device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202769467U true CN202769467U (en) | 2013-03-06 |
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ID=47776036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220471256.7U Expired - Lifetime CN202769467U (en) | 2012-09-14 | 2012-09-14 | Backlight module and liquid crystal display (LCD) device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202769467U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093676A (en) * | 2015-08-06 | 2015-11-25 | 武汉华星光电技术有限公司 | Backlight module for liquid crystal display |
| CN106707616A (en) * | 2016-12-23 | 2017-05-24 | 上海创功通讯技术有限公司 | Backlight module and display device |
| CN111273487A (en) * | 2020-03-26 | 2020-06-12 | 武汉华星光电技术有限公司 | Backlight module and display device |
-
2012
- 2012-09-14 CN CN201220471256.7U patent/CN202769467U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093676A (en) * | 2015-08-06 | 2015-11-25 | 武汉华星光电技术有限公司 | Backlight module for liquid crystal display |
| WO2017020364A1 (en) * | 2015-08-06 | 2017-02-09 | 武汉华星光电技术有限公司 | Backlight module for liquid crystal displays |
| CN106707616A (en) * | 2016-12-23 | 2017-05-24 | 上海创功通讯技术有限公司 | Backlight module and display device |
| CN111273487A (en) * | 2020-03-26 | 2020-06-12 | 武汉华星光电技术有限公司 | Backlight module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |