CN101750794A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN101750794A CN101750794A CN200810184991A CN200810184991A CN101750794A CN 101750794 A CN101750794 A CN 101750794A CN 200810184991 A CN200810184991 A CN 200810184991A CN 200810184991 A CN200810184991 A CN 200810184991A CN 101750794 A CN101750794 A CN 101750794A
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- optical sheet
- liquid crystal
- glasses
- back cover
- lcd
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Abstract
The invention provides a liquid crystal display device which comprises a liquid crystal screen glass open cell, a plurality of optical sheets, a back shell and a mainboard assembly, wherein the liquid crystal screen glass open cell comprises a piece of liquid crystal screen glass and a driving circuit board, and the optical sheets include a first optical sheet and a last optical sheet. The liquid crystal display device is characterized in that the back shell is adjacent to the last optical sheet and a soft member is sandwiched between the back shell and the last optical sheet. The invention can reduce the machining process, the machining cost, the material cost and the assembly cost, reduces the thickness and weight of the liquid crystal display device and well meets the requirements for lightening and thinning the liquid crystal display device. Meanwhile, the invention can make use of the elasticity of the soft cushion block sandwiched between the back shell and the adjacent last optical sheet to absorb the machining errors and assembly errors of the components, to support the optical sheets to be smooth and to absorb the external shaking so as to avoid impact to the liquid crystal screen glass open cell and the optical sheets.
Description
Technical field
The present invention relates to the electronic product field, particularly a kind of liquid crystal indicator.
Background technology
In recent years, liquid crystal indicator is used more and more extensivelyr, as display devices such as LCD, LCD TV, PC all-in-ones, no matter be to be applied to any product, no matter be to be applied to which field also, pursuing the volume lightweight, save the processing cost and the energy, all is the target that present modern product is pursued.At present, existing liquid crystal indicator mainly is by the face frame, liquid crystal display, mainboard module, metal support and back cover are formed, wherein, described liquid crystal display is mainly by preceding frame, the liquid-crystalline glasses module, center, optical sheet, light source, lampshade and backboard are formed, above-mentioned member is assembled after normally processing and being assembled into corresponding composite module again, thereby need the other parts such as center and backboard that increase to fix, make that the thickness of liquid crystal indicator is thicker usually, cost is higher, technology is more complicated also, and backboard is generally a metalwork, more makes liquid crystal indicator relatively heavier, do not meet the lightening day by day development trend of present LCD.Simultaneously, because the member that liquid-crystalline glasses module, each optical sheet are adjacent is fitted mutually, error in making, move or reason such as vibration when causing binding face between them to produce distortion, can cause damage, influence display effect glasses for LCD and optical sheet.
Summary of the invention
The object of the present invention is to provide a kind of liquid crystal indicator, be intended to solve that available liquid crystal display device processing cost is higher, the defective of overall weight weight, avoid glasses for LCD and optical sheet in foozle or the damage that causes when bearing external force simultaneously.
The technical scheme that the present invention proposes is:
A kind of liquid crystal indicator, comprise glasses for LCD group product, some optical sheets, back cover and mainboard assembly, described glasses for LCD group product comprise glasses for LCD and drive circuit board, described some optical sheets comprise first optical sheet and last optical sheet, described back cover is adjacent with last optical sheet, between described back cover and last optical sheet, is folded with flexible member.
Preferably, the flexible member of being located between described back cover and last optical sheet is flexible cushion block I, and described flexible cushion block I is bar shaped or frame component, is fixed on the corresponding positioning strip that is provided with or next door on the back cover, fits with last optical sheet.
Preferably, described mainboard assembly places in the concave shaped cavity that back cover central authorities offer, its outerplanar is adjacent with last optical sheet, be provided with at least one flexible cushion block II between described mainboard assembly and last optical sheet, described flexible cushion block II is bar shaped, or annular, or frame component is fitted or is adhered on the binding face of mainboard assembly correspondence.
Preferably, described flexible cushion block I or flexible cushion block II select resilient foam or rubber for use.
Further, described glasses for LCD group product, the superimposed in regular turn arrangement of each optical sheet are by fixed or movable being snapped on the back cover behind the adaptive with it clamping member clamping.
Preferably, the clamping member that is used for clamping described glasses for LCD group product and each optical sheet is the combination of at least two strip members that can be connected with described back cover, or is framing component.
Preferably, each optical sheet of described superimposed arrangement in regular turn is last diffusion sheet, brightening piece, following diffusion sheet, light guide plate and reflector, wherein said upward diffusion sheet is first optical sheet, described first optical sheet is adjacent with described glasses for LCD group product, it contains an exiting surface, the back side of described exiting surface is incidence surface, and described reflector is last optical sheet.
Further, be folded with cushion between described glasses for LCD and first optical sheet or the light guide plate.
Between described first optical sheet optical sheet adjacent thereto, also be provided with distance piece, described distance piece or be at least one bar shaped member fits on the described first optical sheet incidence surface; Or be a framing component, fit in around the first optical sheet incidence surface.
The present invention also comprises the lampshade that contains luminophor, and described lampshade has first limit and second limit, and wherein, the length on first limit of lampshade is longer than the length on second limit, and second limit of described lampshade covers the drive circuit board of glasses for LCD group product at least.
Be different from prior art, the present invention is by disperseing superimposed arrangement in regular turn with each optical sheet, be fixed on the back cover with glasses for LCD group product by adaptive with it clamping member again, be different from and be combined into module in the prior art earlier, the constituted mode of gathering assembling again, both can reduce manufacturing procedure, also can reduce the additional member of deriving simultaneously by the prior art structure, so reduced processing cost, material cost and assembly cost effectively, also can reduce LCD thickness and weight, preferably reach the lightening requirement of LCD.Simultaneously, between last optical sheet that described back cover periphery and mainboard assembly are adjacent, be folded with flexible cushion block, can utilize its elasticity, absorb each part's machining errors and rigging error, the flatness of supporting optical sheet, but also can absorb exterior vibration, prevent the impact of external force to glasses for LCD group product and optical sheet.
Description of drawings
Fig. 1 is an one-piece construction exploded view of the present invention;
Fig. 2 is liquid-crystalline glasses group product, some optical sheets and back cover structural representation behind the clamping of the present invention;
Fig. 3 is each optical sheet of the present invention and lampshade structure exploded view;
Fig. 4 is that liquid-crystalline glasses group product of the present invention, each optical sheet cooperate synoptic diagram with lampshade;
Fig. 5 is matching chart between each part of the present invention;
Fig. 6 is the A place enlarged drawing of Fig. 5 of the present invention;
Fig. 7 is the B place enlarged drawing of Fig. 5 of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Referring to Fig. 1, Fig. 2, embodiment shown in the present invention's diagram comprises a back cover 30 and mainboard assembly 218, also comprise the glasses for LCD group product (open cell) and the some optical sheets that are used to realize Presentation Function, wherein said glasses for LCD group product comprise glasses for LCD 203 and drive circuit board 2121, described each optical sheet is the sheet that looses, comprise first optical sheet and last optical sheet, wherein first optical sheet and glasses for LCD 203 adjacency, last optical sheet and back cover 30 adjacency, each optical sheet is by after the superimposed in regular turn arrangement of designing requirement, pass through adaptive with it clamping member 26 clampings, corresponding then fixed or movable being snapped on the back cover 30 with described glasses for LCD group product.
As shown in Figure 2, the embodiment of the invention designs on described back cover 30 concave shaped cavity 303 of evagination a little, which is provided with two register pins 302, described mainboard assembly 218 places between last optical sheet and the back cover 30, be placed in the above-mentioned concave shaped cavity 303 position between it is positioned among the back cover 30 by register pin 302 location.Described mainboard assembly 218 comprises preceding cage 2181, back cage 2183 and system board 2182, cage 2181, back cage 2183 are made by metal material before described, can isolate electromagnetic wave and radiation that mainboard 2182 produces, its symmetry contains a cavity, fastening forms a box-like integral body mutually, and described system board 2182 places preceding cage 2181, back cage 2183 to fasten in the box cavity of back formation.Like this, can make after the assembling back cover 30 only outside the center section plane a little outwards have some outstanding, can avoid entire liquid crystal display device to take bigger space, and within the back cover 30 plane periphery with superimposed after last optical sheet peripheral adjacent, simultaneously, mainboard assembly 218 outerplanars and superimposed after last optical sheet center section adjacency.
As shown in Figure 1 and Figure 2, the embodiment of the invention is provided with flexible member between last optical sheet that described back cover 30 is adjacent.Particularly, between last optical sheet that described back cover 30 peripheries are adjacent, be folded with the two flexible cushion block I 216 that be arranged in parallel, described flexible cushion block I 216 is for strip member and can be fixed in the corresponding positioning strip that is provided with 301 sides on the back cover 30, also can correspondence be embedded on the positioning strip 301, fit with last optical sheet both sides.Flexible cushion block I 216 can select foam for use, can utilize the elasticity of foam, absorbs each part's machining errors and rigging error, supports the flatness of each optical sheet, but also can absorb exterior vibration, makes it to have shockproof function.
The present invention is by corresponding superimposed with the optical sheet of each dispersion, again with glasses for LCD group product clamping together, be different from and be combined into module in the prior art earlier, the constituted mode of set assembling both can reduce manufacturing procedure again, also can reduce the additional member of being derived by the prior art structure simultaneously, as center, backboard etc., so reduced processing cost, material cost and assembly cost, can reduce the weight of product again, further can reach the whole lightening purpose of liquid crystal indicator.And the flexible member that folder is established between last optical sheet that described back cover 30 peripheries are adjacent can prevent the impact of external force to glasses for LCD group product and each optical sheet.
Because the present invention has omitted the backboard of conventional display device, for mainboard assembly 218 and last optical sheet are separated, avoid being subjected to external force or each other bump when mobile, the present invention is between mainboard assembly 218 and last optical sheet, also be provided with a flexible cushion block II 217, described flexible cushion block II 217 can be that rubber etc. has certain flexible material to make.Described flexible cushion block II 217 fits or is adhered on the preceding cage 2181.This structure setting can make the protecting against shock of glasses for LCD group product and optical sheet and vibration proof ability better.
As Fig. 1, Fig. 3-shown in Figure 7, in the specific embodiment of the invention, describedly be used to realize that each part of Presentation Function comprises: some optical sheets of glasses for LCD 203, drive circuit board 2121 and superimposed arrangement, described each optical sheet comprises diffusion sheet 25, brightening piece 206, light guide plate 209 and reflector 215, described diffusion sheet 25 be mainly used in divergent beams, can provide uniform surface light source to LCDs; The main effect of brightening piece 206 is to revise direction of light, increases the utilization benefit of light, two superimposed compositions of diaphragm of general normal employing, and direction is vertical each other, and light is concentrated to improve whole briliancy; The effect of light guide plate 209 is guiding radiation directions, improves liquid crystal display radiance degree and control brightness even; The effect of reflector 215 is that the light that will not enter light guide plate 209 reflects, and it is transferred on the liquid crystal display by light guide plate 209 again, prevents that light source from leaking outside, to increase the service efficiency of light source.
As Fig. 1, shown in Figure 3, the described diffusion sheet 25 of the embodiment of the invention can set up diffusion sheet 205 and following diffusion sheet 207 separately, described first optical sheet is last diffusion sheet 205, described upward diffusion sheet 205 and following diffusion sheet 207 lay respectively at two sides of brightening piece 206, wherein first optical sheet--the two sides of-last diffusion sheet 205 is respectively exiting surface 2051 and incidence surface 2052, described exiting surface 2051 and glasses for LCD 203 adjacency, described last optical sheet can be reflector 215, also can be other optical sheets.The present invention is at the glasses for LCD 203 and first optical sheet--goes up between the diffusion sheet 205, also be folded with cushion 204 (Rubber Pad), annular or frame-shaped structure that described cushion 204 can be formed in one and form fit in around the exiting surface 2051 of diffusion sheet 205; Also can be at least one shape member, as two strip members that be arranged in parallel, fit in exiting surface 2051 both sides of diffusion sheet 205.Described cushion 204 has certain elasticity, can be made by elastomeric material or other rubber-like material, can make between glasses for LCD 203 and the last diffusion sheet 205 to keep certain intervals.Simultaneously, cushion 204 can produce certain elastic deformation being subjected to external force to do the time spent, the influence that can avoid external vibration that entire product is brought, and can make under pressure between glasses for LCD 203 and the last diffusion sheet 205 and combine closely, can prevent the external dust invasion, pollute glass, influence imaging effect.In addition, because the friction factor of elastic pad material is bigger usually, under pressure, the friction force between cushion 204 and the glasses for LCD 203 is also bigger, slide so can also effectively prevent glasses for LCD 203, during anti-sliding stop to the scuffing of glasses for LCD 203.
As Fig. 1, Fig. 3-shown in Figure 7, in the specific embodiment of the invention, at described first optical sheet---go up between diffusion sheet 205 and the brightening piece 206, also be provided with distance piece 208.Described distance piece 208 can be at least one bar shaped member, can show as Fig. 1 to be depicted as two members that be arranged in parallel, fits in described diffusion sheet 205 incidence surfaces 2052 both sides of going up, and also can be a framing component, fits in around diffusion sheet 205 incidence surfaces 2052.Described brightening piece 206 is superimposed with the one side of light guide plate 209 by back, distance piece 208 location with following diffusion sheet 207, the another side of light guide plate 209 and reflector 215 are superimposed, described reflector 215 and light guide plate 209 superimposed faces are a shiny surface, are used for reflection ray to light guide plate 209.Described distance piece 208 can be made by materials such as rubber, has certain elasticity, can be used for locating brightening piece 206 and following diffusion sheet 207, simultaneously can keep having a slight gap between diffusion sheet 205 and the brightening piece 206, prevent because last diffusion sheet 205 and the brightening piece 206 superimposed polarisation phenomenons that cause.
Foregoing description is a preferable embodiment, also can do some distortion at the said structure setting, such as, can omit down diffusion sheet 207 and brightening piece 206.
As Fig. 1, Fig. 3-shown in Figure 7, in the specific embodiment of the invention, also comprise a lampshade 23 and luminophor 214, described lampshade 23 has first limit 231 and second limit 232, wherein, the length on first limit 231 of lampshade is longer than the length on second limit 232, and second limit 232 of described lampshade covers the drive circuit board of glasses for LCD group product at least.Described lampshade 23 can set up upper lamp shade and lower lamp shade separately, upper and lower being symmetrical arranged, and structure is asymmetric " U " type shown in Figure 4, contains a spill cavity 233.Described lampshade 23 places the both sides of reflector 215 and light guide plate 209, and two opposite ends of reflector 215 and light guide plate 209 are contained in the spill cavity 233 of lampshade first limit 231 and 232 formation of second limit.Described luminophor 214 is strip, it can be any luminescence component, such as being cold-cathode fluorescence lamp or the strip LED lamp that forms by some LED, position and adjacent with an end that is contained in the lampshade 23 of described light guide plate 209 between described luminophor 214 places among the described spill cavity 233, luminophor 214 two ends are fixed on the lampshade 23 by fixture 210 respectively.
As shown in Figure 1, for good fixedly glasses for LCD 203 and some optical sheets of superimposed arrangement, the present invention is provided with a clamping member 26, and described clamping member 26 can be the combination of two or four strip members, or is a general frame member.Framing component is made of four " L " type bonding jumpers described in the present invention's diagram---two lateral frames 202 and two side stands 201.As shown in Figure 7, on the side of described lateral frame 202 and side stand 201, also be provided with clamping part 2011, can fasten with the points of engagement of back cover 30 corresponding settings, be coated on the part periphery of above-mentioned superimposed back, and by 10 coverings of a frame, by means of the characteristic of bonding jumper itself, the present invention also can realize having the effect of anti-electromagnetic interference (EMI).
The present invention can be the building block of LCD, LCD TV or computing machine.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. liquid crystal indicator, comprise glasses for LCD group product, some optical sheets, back cover and mainboard assembly, described glasses for LCD group product comprise glasses for LCD and drive circuit board, described some optical sheets comprise first optical sheet and last optical sheet, it is characterized in that described back cover is adjacent with last optical sheet, between described back cover and last optical sheet, be folded with flexible member.
2. liquid crystal indicator as claimed in claim 1, it is characterized in that: the flexible member of being located between described back cover and last optical sheet is flexible cushion block I, described flexible cushion block I is bar shaped or frame component, be fixed on the corresponding positioning strip that is provided with or next door on the back cover, fit with last optical sheet.
3. liquid crystal indicator as claimed in claim 1, it is characterized in that: described mainboard assembly places in the concave shaped cavity that back cover central authorities offer, its outerplanar is adjacent with last optical sheet, be provided with at least one flexible cushion block II between described mainboard assembly and last optical sheet, described flexible cushion block II is bar shaped, or annular, or frame component is fitted or is adhered on the binding face of mainboard assembly correspondence.
4. as claim 2 or 3 described liquid crystal indicators, it is characterized in that: described flexible cushion block I or flexible cushion block II select resilient foam or rubber for use.
5. liquid crystal indicator as claimed in claim 1 is characterized in that: described glasses for LCD group product, the superimposed in regular turn arrangement of each optical sheet, and by fixed or movable being snapped on the back cover behind the adaptive with it clamping member clamping.
6. liquid crystal indicator as claimed in claim 5 is characterized in that: the clamping member that is used for clamping described glasses for LCD group product and each optical sheet is the combination of at least two strip members that can be connected with described back cover, or is framing component.
7. liquid crystal indicator as claimed in claim 5, it is characterized in that: each optical sheet of described superimposed arrangement in regular turn is last diffusion sheet, brightening piece, following diffusion sheet, light guide plate and reflector, wherein said upward diffusion sheet is first optical sheet, described first optical sheet is adjacent with described glasses for LCD group product, it contains an exiting surface, the back side of described exiting surface is incidence surface, and described reflector is last optical sheet.
8. liquid crystal indicator as claimed in claim 7 is characterized in that: be folded with cushion between described glasses for LCD and first optical sheet or the light guide plate.
9. liquid crystal indicator as claimed in claim 7 is characterized in that, is provided with distance piece between described first optical sheet optical sheet adjacent thereto, and described distance piece or be at least one bar shaped member fits on the described first optical sheet incidence surface; Or be a framing component, fit in around the first optical sheet incidence surface.
10. as each described liquid crystal indicator of claim 1-3,5-9, it is characterized in that, also comprise the lampshade that contains luminophor, described lampshade has first limit and second limit, wherein, the length on first limit of lampshade is longer than the length on second limit, and second limit of described lampshade covers the drive circuit board of glasses for LCD group product at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810184991A CN101750794A (en) | 2008-12-18 | 2008-12-18 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810184991A CN101750794A (en) | 2008-12-18 | 2008-12-18 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101750794A true CN101750794A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810184991A Pending CN101750794A (en) | 2008-12-18 | 2008-12-18 | Liquid crystal display device |
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|---|---|
| CN (1) | CN101750794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914884A (en) * | 2011-08-04 | 2013-02-06 | 精工爱普生株式会社 | Liquid crystal display apparatus and electronic equipment |
| WO2022267522A1 (en) * | 2021-06-21 | 2022-12-29 | 京东方科技集团股份有限公司 | Whole unit structure and display device |
-
2008
- 2008-12-18 CN CN200810184991A patent/CN101750794A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914884A (en) * | 2011-08-04 | 2013-02-06 | 精工爱普生株式会社 | Liquid crystal display apparatus and electronic equipment |
| WO2022267522A1 (en) * | 2021-06-21 | 2022-12-29 | 京东方科技集团股份有限公司 | Whole unit structure and display device |
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