CN201237686Y - LCD module group - Google Patents
LCD module group Download PDFInfo
- Publication number
- CN201237686Y CN201237686Y CNU200820095930XU CN200820095930U CN201237686Y CN 201237686 Y CN201237686 Y CN 201237686Y CN U200820095930X U CNU200820095930X U CN U200820095930XU CN 200820095930 U CN200820095930 U CN 200820095930U CN 201237686 Y CN201237686 Y CN 201237686Y
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- liquid crystal
- display module
- crystal display
- crystal panel
- led
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Abstract
The utility model relates to a liquid crystal display module, comprising a box formed by an upper iron frame and a lower iron frame. A liquid crystal panel and an LED backlight source are arranged in the box. The LED backlight source is parallel to and clings to the back of the liquid crystal panel tightly. The upper iron frame is provided with a window, from which the display space of the liquid crystal panel is exposed; the liquid crystal panel is provided with a liquid crystal display driver; the liquid crystal panel and the liquid crystal display driver are connected with the LED backlight source by a signal. In the liquid crystal display module adopting the technical proposal of the utility model, because the liquid crystal display driver is arranged on the liquid crystal panel directly and a large independent PCB in the prior art is canceled, cost is saved. Moreover, the liquid crystal panel and the LED backlight source are sealed in the box structure; therefore, leg twisting procedure in the assembly is saved, which saves labor cost and makes the appearance of the liquid display module simpler and more beautiful. Moreover, the box structure forms a good shield, which improves the EMC performance of the liquid display module greatly.
Description
Technical field
The utility model relates to a kind of liquid crystal display module, particularly a kind of STN or CSTN liquid crystal display module.
Background technology
Lcd technology has been widely used in products such as computer screen, mobile phone, digital camera, Video Camera, PDA, onboard navigation system now, and its crucial liquid crystal display module.
Figure 1 shows that STN (Super Twisted Nematic super-twist nematic) the liquid crystal display module that adopts SMT (Surface mount technology surface mounting technology) technology, it generally comprises: go up chase 11, liquid crystal panel 12, conductive adhesive tape 13, liner adhesive tape 14, hot pressing gummed paper 15, backlight 16, printed-wiring board (PWB) 17 and compliant conductive band 18.In this structure, circuit, booster circuit and LCD controller (Controller) take place and all are placed on the printed-wiring board (PWB) 17 in LCD driver (LCD Driver), six grades of level dividing potential drops (bias) circuit, multirow reverse signal (M signal), and because of employing conductive adhesive tape 13 connects liquid crystal panel 12 and printed-wiring board (PWB)s 17, this requires to go up chase 11 and printed-wiring board (PWB) 17 assembling fastening backs adopt the mode of twisting leg to fix.And if it is a little stressed inhomogeneous respectively to twist leg when twisting leg fixedly, causes some row or column display abnormality easily.
Figure 2 shows that and adopt the stn liquid crystal of TAB (the automatic nation of Tape automotive bonding belt is fixed) technology to show module, it generally comprises: go up chase 21, liquid crystal panel 22, LCD driver 23, backlight 24, printed-wiring board (PWB) 25 and conductive strips 26.In this structure, six grades of level bleeder circuits, multirow reverse signal generation circuit, booster circuit and LCD controller also all are placed on the printed-wiring board (PWB) 25, also need to adopt to twist leg to assemble after last chase 21 fastens with printed-wiring board (PWB) 25 assemblings to fix each assembly.
These two kinds of liquid crystal display modules all need a printed-wiring board (PWB) suitable with the LED-backlit Source size, because of the printed-wiring board (PWB) area is bigger, and the material cost height.And all need to adopt fixedly entire module of the mode that twists leg, except aforesaid may causing also must increase human cost the display abnormality.At last, this type of liquid crystal display module is because its structure must cause its profile succinctly attractive in appearance inadequately.
The utility model content
Technical problem to be solved in the utility model provides a kind of module of liquid crystal display cheaply.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The liquid crystal display module, comprise: fasten the box body that forms by last chase and following chase, be equiped with liquid crystal panel and LED-backlit source in the described box body, and the parallel back side of being close to liquid crystal panel, described LED-backlit source, last chase is provided with the window that expose feed flow crystal panel viewing area; Also be provided with LCD driver on the described liquid crystal panel, described liquid crystal panel and LCD driver all are connected with the LED-backlit source signal.
Adopt the liquid crystal display module of technical solutions of the utility model, the beneficial effect that is compared with the prior art is:
Owing to LCD driver is set directly on the liquid crystal panel, has cancelled larger area separate printed circuit boards in the prior art simultaneously, thereby saved cost; And form box body structure by last chase and following chase liquid crystal panel and LED-backlit source are closed in it, thereby saved the operation that twists leg in the assembling, in further saving human cost, also make the profile of liquid crystal display module more succinct, attractive in appearance.In addition, the box body structure of sealing can form good shielding, has improved the EMC performance of liquid crystal display module greatly.
Description of drawings
Fig. 1 is the exploded view that a kind of available liquid crystal shows module;
Fig. 2 is the exploded view that another kind of available liquid crystal shows module;
Fig. 3 is the exploded view of the utility model embodiment liquid crystal display module;
Fig. 4 is the exploded view in LED-backlit source in the utility model embodiment.
Below in conjunction with accompanying drawing liquid crystal display module of the present utility model is described in further detail.
Embodiment
The liquid crystal display module of this embodiment comprises as shown in Figure 3: go up chase 31, liquid crystal panel 32, flexible circuit board 33, LED-backlit source 34, compliant conductive band 35 and following chase 36.
Liquid crystal panel 32 and LED-backlit source 34 be parallel is close to setting, and be closed among the box body of chase 31 and following chase 36 formations, last chase 31 is provided with the window of corresponding liquid crystal panel 32 viewing areas, so that the shown content in liquid crystal panel 32 viewing areas as seen.Owing to be provided with two chases, chase fastens by buckle up and down, thereby can save this procedure that twists leg, and when saving a large amount of human cost, makes liquid crystal display module profile succinctly attractive in appearance.And go up the box body structure of chase and the formation of following chase fastening, and can form good shielding to the element that is positioned at wherein, improve the EMC performance of liquid crystal display module greatly.
Liquid crystal panel 32 is connected with LED-backlit source 34 by flexible circuit board 33, and LED-backlit source 34 also is connected by the client of compliant conductive band 35 with the external world.And the concrete composition of backlight 34 as shown in Figure 4, comprising: glue frame 341, reflectance coating 342, light guide plate 343, printed-wiring board (PWB) 344, diffusion barrier 345, black double faced adhesive tape 346.Glue frame 341 is mainly used in and holds light guide plate 343 and printed-wiring board (PWB) 344.In this embodiment, the design in LED-backlit source 34 is crucial, and the printed-wiring board (PWB) 343 in the LED-backlit source 34 is the keys in the key, it is bearing the important task that connects liquid crystal panel 32 and extraneous client, it is the signal centre of whole liquid crystal display module, need fixation reliable, and to conveniently weld, operation such as pressing.An end of glue frame 341 is symmetrically arranged with two shims 347 for this reason, the spatial accommodation of glue frame 341 is divided into left and right sides two parts, on the printed-wiring board (PWB) 344 then correspondence be provided with twice draw-in groove 348, shim 347 snaps in the draw-in groove 348 during assembling, cooperate double faced adhesive tape or screw again, can make printed-wiring board (PWB) 344 more stable being fixed on the glue frame 341.And the major part of printed-wiring board (PWB) 344 is positioned at shim 347 glue frame 341 on one side, and 343 of light guide plate are positioned at the glue frame 341 of shim 347 another sides.In addition, shim 347 also plays the effect that the light emitting diode on six grades of level bleeder circuits, multirow reverse signal generation circuit and the printed-wiring board (PWB) 344 is separated, and can better solve heat dissipation problem.In order further to strengthen heat radiation, also in shim 347 1 sides, offer heat radiation breach 349 on the glue frame 341 of corresponding printed-wiring board (PWB) 344, and also correspondingly on the following chase 36 of heat radiation breach 349 correspondences offer some louvres, make things convenient for printed-wiring board (PWB) 344 heat radiations.
In order to make the efficient in LED-backlit source 34 higher, described reflectance coating 342 is set between the bottom surface and glue frame 341 of light guide plate 343.For the light that allows LED-backlit source 34 be sent illuminates liquid crystal panel 32 uniformly, also between light guide plate 343 and liquid crystal panel 32, be provided with the described diffusion barrier 345 of one deck.In addition, also post one deck black double faced adhesive tape 346 between diffusion barrier 345 and liquid crystal panel 32, black double faced adhesive tape 346 makes LED-backlit source 34 only evenly illuminate the viewing area of liquid crystal panel 32 around the periphery setting of liquid crystal panel 32 viewing areas.
One of principal feature of this embodiment is, has omitted available liquid crystal and has shown module larger area independence printed-wiring board (PWB).Originally may be provided with LCD driver, six grades of level bleeder circuits, multirow reverse signal generation circuit, booster circuit and LCD controller on the described independent printed-wiring board (PWB).And the liquid crystal display module of this embodiment adopts COG (the direct nation of Chip On Glass chip fixes on glass) technology that the direct nation of LCD driver is fixed on the liquid crystal panel 32.And all must comprise single-chip microcomputer on the client mainboard, and a lot of single-chip microcomputer all comprises LCD driver, thereby the liquid crystal display module can not comprise LCD driver, and provides LCD driver by client.In addition, booster circuit also can be made on the client mainboard easily.Therefore having only six grades of level bleeder circuits and multirow reverse signal generation circuit is must be made on the liquid crystal display module.And just in time there is a less strip printed-wiring board (PWB) 344 34 inside, LED-backlit source, and it is used to place the light emitting diode and the line in LED-backlit source 34 originally.Now six grades of level bleeder circuits and multirow reverse signal generation circuit are arranged on the printed-wiring board (PWB) 344, only the area of printed-wiring board (PWB) 344 need be omited fine setting and get final product greatly.Because it is very little that six grades of level bleeder circuits and the used components and parts of multirow reverse signal generation circuit take up room, therefore strengthen printed-wiring board (PWB) 344 areas and the cost that causes rises very for a short time, can ignore.And owing to cancelled the independent printed-wiring board (PWB) of large-size in the prior art, thereby can effectively reduce cost.
The technical solution of the utility model not only adapts to the liquid crystal display module of above-mentioned employing STN type liquid crystal panel, also adapts to the liquid crystal display module that adopts CSTN (Color STN colorful ultra-twist nematic) type display panels.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1, liquid crystal display module, it is characterized in that, described liquid crystal display module comprises the box body that is formed by last chase and following chase fastening, be equiped with liquid crystal panel and LED-backlit source in the described box body, and the parallel back side of being close to liquid crystal panel, described LED-backlit source, last chase is provided with the window that expose feed flow crystal panel viewing area; Also be provided with LCD driver on the described liquid crystal panel, described liquid crystal panel and LCD driver all are connected with the LED-backlit source signal.
2, liquid crystal display module as claimed in claim 1 is characterized in that, described LED-backlit source comprises: glue frame, light guide plate and printed-wiring board (PWB); Described light guide plate and printed circuit board (PCB) are arranged in the glue frame, and printed circuit board (PCB) is provided with six grades of level bleeder circuits and multirow reverse signal generation circuit; Described LCD driver is connected with client signal by described printed circuit board (PCB).
3, liquid crystal display module as claimed in claim 2 is characterized in that, described LED-backlit source also comprises the reflectance coating that is arranged between light guide plate and the glue frame.
4, liquid crystal display module as claimed in claim 2 is characterized in that, described LED-backlit source also comprises the diffusion barrier that is arranged between light guide plate and the liquid crystal panel.
5, liquid crystal display module as claimed in claim 2 is characterized in that, described glue frame is provided with spacer, and described spacer is separated into two isolated accommodation spaces with the glue frame; Light emitting diode on described light guide plate and the described printed-wiring board (PWB) is positioned among the accommodation space of spacer one side, and other electronic devices and components on other printed-wiring board (PWB) then are positioned among the accommodation space of spacer opposite side.
6, liquid crystal display module as claimed in claim 5 is characterized in that, described spacer has two, and is symmetricly set in the glue frame; Described printed-wiring board (PWB) correspondence offers draw-in groove, and described spacer is stuck in the draw-in groove.
7, liquid crystal display module as claimed in claim 2 is characterized in that, offers the heat radiation breach on the described glue frame, the corresponding printed-wiring board (PWB) in the position of described heat radiation breach; And offer some louvres on the chase under described, the position of described louvre is corresponding with the position of heat radiation breach.
8, as any described liquid crystal display module in the claim 1 to 7, it is characterized in that, described liquid crystal display module also comprises the black double faced adhesive tape that is used for adhering liquid crystal panel and LED-backlit source, and described black double faced adhesive tape is surrounded on the periphery setting of liquid crystal panel viewing area.
9, as any described liquid crystal display module in the claim 1 to 7, it is characterized in that described liquid crystal display module also comprises flexible circuit board, described LCD driver is connected with the LED-backlit source signal by flexible circuit board.
10, as any described liquid crystal display module in the claim 1 to 7, it is characterized in that, described liquid crystal display module comprises that also being used for the feed flow crystalline substance shows the compliant conductive band that module is connected with client, and an end of described compliant conductive band is connected with the LED-backlit source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820095930XU CN201237686Y (en) | 2008-07-28 | 2008-07-28 | LCD module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820095930XU CN201237686Y (en) | 2008-07-28 | 2008-07-28 | LCD module group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237686Y true CN201237686Y (en) | 2009-05-13 |
Family
ID=40650419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820095930XU Expired - Lifetime CN201237686Y (en) | 2008-07-28 | 2008-07-28 | LCD module group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201237686Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014127559A1 (en) * | 2013-02-20 | 2014-08-28 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN107315282A (en) * | 2017-08-14 | 2017-11-03 | 上海天马微电子有限公司 | Backlight module and display device |
| CN108663863A (en) * | 2018-06-25 | 2018-10-16 | 深圳市华星光电技术有限公司 | Array substrate |
-
2008
- 2008-07-28 CN CNU200820095930XU patent/CN201237686Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014127559A1 (en) * | 2013-02-20 | 2014-08-28 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN107315282A (en) * | 2017-08-14 | 2017-11-03 | 上海天马微电子有限公司 | Backlight module and display device |
| CN108663863A (en) * | 2018-06-25 | 2018-10-16 | 深圳市华星光电技术有限公司 | Array substrate |
| CN108663863B (en) * | 2018-06-25 | 2021-01-26 | Tcl华星光电技术有限公司 | Array substrate |
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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 |
Granted publication date: 20090513 |
|
| CX01 | Expiry of patent term |