CN204176365U - Sheet light emitting apparatus - Google Patents
Sheet light emitting apparatus Download PDFInfo
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- CN204176365U CN204176365U CN201420515695.2U CN201420515695U CN204176365U CN 204176365 U CN204176365 U CN 204176365U CN 201420515695 U CN201420515695 U CN 201420515695U CN 204176365 U CN204176365 U CN 204176365U
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- light guide
- guide section
- light
- flexible strip
- emitting apparatus
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Abstract
The utility model relates to a kind of slim and can prevent the back side of light from light guide plate or the sheet light emitting apparatus of side light leak.This sheet light emitting apparatus has: flat display floater; Flexible strip, possesses light reflection function and shade function; Flat light guide section, is configured between described display floater and described flexible strip; And light source, be configured in the sidepiece of described light guide section, described flexible strip possess a face of light reflection function at least partially on there is adhesive, by described adhesive, possess described in described light guide section is bonded on a face of light reflection function, and except the side adjacent with described light source, described flexible strip has the exposed portion of exposing from the surrounding of described light guide section, by the described adhesive on this exposed portion, described display floater and described flexible strip are bonded together.
Description
Technical field
The utility model relates to a kind of sheet light emitting apparatus, particularly relates to the sheet light emitting apparatus thrown light on to the operating area of the electronic equipments such as mobile phone.
Background technology
In recent years, develop light guide sheet to make the operating area of the electronic equipments such as mobile phone luminous, this light guide sheet is configured between display floater and component mount substrates (such as backlight) usually.
A kind of lighting unit is described in patent document 1.As shown in Figure 1, 2, matrix 11 has operating area, matrix 11 is disposed with contact chip 12 and light guide sheet 13.The light that light emitting diode 141 in light source cell 14 sends is incident from the end face B of light guide sheet 13, directed in light guide sheet, outwardly penetrates after the light-emitting zone diffusion that light guide sheet interarea A is arranged.And, this lighting unit is provided with cover 15 (comprising reflecting layer 151 and absorbed layer 152), cover the gap between light source cell 14 and the end face B of light guide sheet 13, to reflect and in directed time light guide sheet 13 from the light tegmentum parts 15 of this gap or the injection of light source upper surface, thus efficiently the light from light source cell 14 is guided to light guide sheet.
Patent document 1:CN101230970B
But, although the lighting unit of described structure utilizes cover to reflect and absorbs the light from described gap or the injection of light source upper surface, prevent the upper surface side light leak from light source, but from the upper surface of light guide sheet and another side (namely described structure can not prevent light, the side opposed with end face B) penetrate, in order to prevent upper surface from this light guide sheet and another side light leak, needed to arrange light obstructing member in addition around light guide sheet in the past.
On the other hand, along with reaching its maturity and the slimming of electronic equipment of OGS (One Glass Solution) technology, gap between display floater and component mount substrates is more and more less, and such as this gap has become about 0.1mm from about 0.2mm before.In contrast, require that the thickness of light guide sheet is more and more thinner.Along with the thickness of light guide sheet is more and more thinner, the mid-depth of the centre of luminescence and light guide sheet that create light source differs comparatively large and light utilization efficiency reduces problem.
Utility model content
The utility model is made in view of described problem, and object is to provide a kind of slim and can prevent the back side of light from light guide plate or the sheet light emitting apparatus of side light leak.
A kind of sheet light emitting apparatus, is characterized in that having: flat display floater; Flexible strip, possesses light reflection function and shade function; Flat light guide section, is configured between described display floater and described flexible strip; And light source, be configured in the sidepiece of described light guide section, described flexible strip possess a face of light reflection function at least partially on there is adhesive, by described adhesive, possess described in described light guide section is bonded on a face of light reflection function, and except the side adjacent with described light source, described flexible strip has the exposed portion of exposing from the surrounding of described light guide section, by the described adhesive on this exposed portion, described display floater and described flexible strip are bonded together.
According to described sheet light emitting apparatus, owing to having possessed described flexible strip, on a face of flexible strip, described light guide section is bonded by adhesive, and by adhesive to cover the whole light guide section back side and described display floater and described flexible strip are bonded together by the mode sealing the back side of light guide section and side (in other three sides beyond the side adjacent with light source at least one).Thus, do not need additionally to arrange light-blocking member at the back side of backlight or side, while achieving slimming, also reduce component and assembling procedure, achieve the reduction of cost.
In described sheet light emitting apparatus, be configured with multiple described light guide section between described display floater and described flexible strip, adjacent described light guide section is linked together by linking part.
By described linking part, multiple light guide section is linked together, the configured in one piece precision of each light guide section can be ensured compared with configuring the situation of multiple light guide section respectively, be not easy the skew producing position.
In described sheet light emitting apparatus, on the width vertical with link direction, the width of described linking part is less than the width of described light guide section.
Because the width of linking part is narrower than light guide section, make flexible strip become large from the area that the surrounding of light guide section exposes, the bond area namely between flexible strip and display floater becomes large, can realize more firmly bonding, and also makes the fixing more firm of light guide section simultaneously.
In described sheet light emitting apparatus, described light guide section has flexibility, rational height adjustment adhesive between described display floater and described light guide section, to make the centre of luminescence of described light source in a thickness direction close or consistent with the center on the thickness direction of described light guide section.
By rational height adjustment adhesive, both improve the impingement rate of the light from light source in the incidence end of light guide section, ensure that slimming at the illuminating part of light guide section again, thus improve light utilization efficiency.
In described sheet light emitting apparatus, the difference in height between the center preferably in a thickness direction on the centre of luminescence of described light source and the thickness direction of described light guide section is less than or equal to 1/4 of the size of light-emitting component on described thickness direction of described light source.Higher light utilization efficiency can be obtained in this case.
In described sheet light emitting apparatus, described flexible strip has reflection layer and light shield layer, and described reflection layer is the metallochrome of white or metal deposition film etc., and described light shield layer is black.
This light shield layer and reflection layer are formed as a component, can absorb not by the light that reflection layer reflects, thus reliably prevent light through reflection layer and become light leak.
In described sheet light emitting apparatus, described exposed portion comprises first exposed portion of exposing with described light source opposite side from described light guide section and second exposed portion of exposing from the side of described light guide section.
By the adhesive of the first exposed division office and the second exposed portion, can reliably prevent from light guide plate with light source opposite side and side light leak.
In described sheet light emitting apparatus, the length of described first exposed portion on the width vertical with link direction before bonding is greater than 1.4 times of the thickness of described light guide section.In this situation, can ensure that the bending angle of the first exposed portion is little, the high adhesion strength between display floater can be kept.
Accompanying drawing explanation
Fig. 1 is the top view of the lighting unit representing past case.
Fig. 2 is the sectional view of the lighting unit representing past case.
Fig. 3 is the schematic diagram representing the example applying sheet light emitting apparatus of the present utility model.
Fig. 4 is the top view representing sheet light emitting apparatus of the present utility model.
Fig. 5 is the sectional view along the A-A line in Fig. 4.
Fig. 6 is the flexible strip represented in sheet light emitting apparatus of the present utility model, light guide sheet, Height Adjustment adhesive top view in a disassembled state.
Fig. 7 is the profile of the example representing flexible strip.
Description of reference numerals:
1 display floater,
2 operating areas,
3 sheet light emitting apparatus,
4 flexible strips,
4a first exposed portion,
4b second exposed portion,
4c the 3rd exposed portion,
5 light guide sections,
5a incidence end,
5b illuminating part,
6 linking parts,
7 Height Adjustment adhesives,
8 light sources,
8a flex circuit application (FPC),
8b LED，
11 matrixes,
12 contact chips,
13 light guide sheet,
14 light source cells,
141 light emitting diodes,
15 covers,
151 reflecting layer,
152 absorbed layers.
Detailed description of the invention
Sheet light emitting apparatus in the utility model is used for throwing light on to the operating area in the display floater of electronic equipment, electronic equipment can be the device of panel computer, mobile phone, mobile unit etc., as long as display floater comprises the equipment that the operating areas such as key area also wish to throw light on to this operating area certainly, the utility model can be applied.
Example when sheet light emitting apparatus of the present utility model being applied to mobile phone has been shown in Fig. 3.
In some smart mobile phone, as shown in Figure 3, the bottom of display floater 1 is provided with operating area 2, left, center, right in the operating area 2 of Fig. 3 is provided with 3 key areas respectively, each key area has been endowed different functions, the specific operations such as user is such as selected respectively by the key area in touching display floater, exited, menu display.
Referring to Fig. 3 ~ Fig. 7, the structure of sheet light emitting apparatus 3 of the present utility model is described.
Fig. 3 is the top view seen when the rear side (one side contrary with the face that user carries out operating) of display floater observes display floater, Fig. 4 is the figure that the part surrounded dotted line in Fig. 3 carries out amplifying display, Fig. 5 is the sectional view along the A-A line in Fig. 4, Fig. 6 is the flexible strip represented in sheet light emitting apparatus 3 of the present utility model, light guide sheet, Height Adjustment adhesive top view in a disassembled state, and Fig. 7 is the profile of the example representing flexible strip.
For convenience of explanation, using the up and down direction of the direction up and down in Fig. 3 and Fig. 4 as sheet light emitting apparatus 3, the thickness direction of the thickness direction of display floater 1 as sheet light emitting apparatus 3 is described.In addition, the state of overlooking refers to, by the rear side of display floater 1 upward and horizontal positioned time from the state of the rear side of top view display floater 1.
Sheet light emitting apparatus 3 comprises a part, flexible strip 4, flat light guide section 5, linking part 6, Height Adjustment adhesive 7 and light source 8 in flat display floater 1.
As shown in Figures 4 and 5, flexible strip 4, flat light guide section 5, linking part 6 and Height Adjustment adhesive 7 are arranged on the rear side of display floater 1 in a thickness direction overlappingly, in a thickness direction, light guide section 5 is configured between display floater 1 and flexible strip 4, and Height Adjustment adhesive 7 is arranged between light guide section 5 and display floater 1.
In the diagram, light source 8 is arranged on the below of light guide section 5, between light source 8 and light guide section 5, be separated with certain interval.Light source 8 possesses flex circuit application (FPC) 8a and LED 8b.Utilize the wiring on flex circuit application (FPC) 8a, the electric energy from battery is supplied to LED 8b, LED8b can be made luminous.
Light guide section 5 usually by having flexible material, such as plastics form.Specifically, light guide section is made up of polyurethane resin, PET (polyethylene terephthalate) resin, PEN (poly-naphthalene dicarboxylic acid glycol ester) resin, PC (Merlon) resin etc.
As shown in Figure 4, when being configured with multiple light guide section 5 between display floater 1 and flexible strip 4, adjacent light guide section 5 is linked together by linking part 6.By linking part 6, multiple light guide section 5 is linked together, the configured in one piece precision of each light guide section 5 can be ensured compared with configuring the situation of multiple light guide section 5 respectively, be not easy the skew producing position.Preferred linking part 6 uses the material identical with light guide section 5 to form, integrally formed with light guide section 5.
In addition, on the width vertical with link direction, the width (size in Fig. 4 on above-below direction) of linking part 6 is narrower than light guide section 5.
Height Adjustment adhesive 7 is formed by having certain thickness double faced adhesive tape.As shown in Figure 5, the incidence end 5a of the light source side of light guide section 5 can be bonded in the rear side of display floater 1 by this Height Adjustment adhesive 7.As shown in Figure 6, Height Adjustment adhesive 7 is only arranged on the incidence end 5a side of light guide section 5, and is formed as the shape that can overlap with the incidence end 5a of light guide section 5.
As long as flexible strip 4 has the component of light reflection function and shade function, its formation is not particularly limited.As shown in Figure 7, can be the formation of arranged outside light shield layer 42 at reflection layer 41.As reflection layer 41, the resin bed etc. of white can be enumerated, as light shield layer 42, the resin bed etc. of black can be enumerated.The resin bed of black directly can use the resin of black, also can soak into by carrying out ink to the resin of light color or be obtained by process black ink.
According to this formation, even if Transmission light reflection layer 41, light shield layer 42 also can by the light absorption of transmission, thus reliably prevent light and become light leak through reflection layer 41.
The face possessing light reflection function of flexible strip 4 has adhesive, and by being layered on light guide section 5 by flexible strip 4, a face with reflection function of flexible strip 4 and light guide section 5 are bonded together.
Further, except the side adjacent with light source 8, flexible strip 4 has the exposed portion of exposing from the surrounding of light guide section 5 and linking part 6.That is, in the side adjacent with light source 8, flexible strip 4 overlaps with light guide section 5, at least side beyond the side adjacent with light source 8, and flexible strip 4 has the exposed portion of exposing from the surrounding of light guide section 5 and linking part 6.
As shown in Figure 4, this exposed portion comprises the first exposed portion 4a exposed with light source 8 opposite side (top Fig. 4) from light guide section 5 and the second exposed portion 4b exposed from the side (left side and/or right side) of light guide section 5.In addition, the 3rd exposed portion 4c exposed from the upper and lower of linking part 6 is also comprised.
In addition, as shown in Figure 5, the first exposed portion 4a comprises sloping portion 4a1 and the parallel parallel portion 4a2 relative to display floater 1 of the inclination relative to display floater 1.If the bending angle of sloping portion 4a1 is excessive, may cause the fracture of flexible strip 4, therefore, the length L of preferred angled part 4a1 is more than or equal to the thickness h of light guide section 5
11.4 times of (that is, 1.4*h
1≤ L), now can ensure that the angle of sloping portion 4a1 and parallel portion 4a2 is less than or equal to 45 degree.That is, the first exposed portion 4a length in the vertical direction before preferably bonding must be greater than the thickness h of light guide section 5
11.4 times.
By the adhesive on described each exposed portion, display floater 1 and flexible strip 4 are bonded together in the mode at the back side and the back side and side (at least one side in other three sides in Fig. 4 except the side adjacent with light source 8) that seal light guide section 5 that cover whole light guide section 5 by flexible strip 4.Thus, do not need additionally to arrange light-blocking member at the back side of backlight (not shown) or side, while achieving slimming, also reduce component and assembling procedure, achieve the reduction of cost.
In addition, as described in Figure 5, the distance between flexible strip 4 and display floater 1 is stepped change in the vertical direction.The position that overlaps with Height Adjustment adhesive 7 of flexible strip 4 in a thickness direction, the distance between flexible strip 4 and display floater 1 is maximum.In the position of the first exposed portion 4a of flexible strip 4, flexible strip 4 and display floater 1 are directly bonded together, and distance becomes 0.
In addition, light guide section 5 is arranged to the shape corresponding with the button in operating area, is usually set to general square shape.In addition, as shown in Figure 5, Figure 6, in the part that light guide section 5 contacts with display floater 1, be provided with the illuminating part 5b of general square shape, laser irradiation can be carried out by the region of the illuminating part 5b to light guide section 5 and form groove forming this illuminating part 5b.Certainly, the generation type of this illuminating part 5b is not limited only to this.
In addition, because the width of linking part 6 is narrower than light guide section 5, make flexible strip 4 become large from the area that the surrounding of light guide section exposes, the bond area namely between flexible strip and display floater becomes large, can realize more firmly bonding, also make the fixing more firm of light guide section simultaneously.
Below, with reference to Fig. 5, the function of Height Adjustment adhesive 7 is described.
Generally, the centre of luminescence (that is, the centre of luminescence of LED 8b) of light source 8 is higher with center (hereinafter referred to as " the mid-depth ") impingement rate more close to light on the thickness direction of the incidence end of light guide section 5 in a thickness direction.In order to the incidence end of the centre of luminescence and light guide section 5 that reduce light source 8 mid-depth between difference in height and be provided with Height Adjustment adhesive 7.Certainly, if when not establishing Height Adjustment adhesive 7, the centre of luminescence of light source 8 and the mid-depth of light guide section 5 are close or consistent, also can not rational height adjustment adhesive 7.
But along with electronic equipment constantly pursues slimming, the gap between display floater 1 and backlight (not shown) is decreased to about 0.1mm, now the thickness h of light guide section 5
1be as thin as about 0.07mm, when the thickness of light source 8 is not by particular/special requirement, the thickness h of flex circuit application (FPC) 8a
2the about thickness h of 0.12mm, LED 8b
3about 0.3mm.
Suppose the thickness h of the Height Adjustment adhesive 7 in Fig. 5
4about 0.1mm, then the height difference H reduced between the centre of luminescence of light source 8 and the mid-depth of light guide section 5 is:
H＝(h
2+h
3/2)－(h
4+h
1/2)＝0.135mm。
Suppose not rational height adjustment adhesive 7 and only adopt the usual adhesive of thickness h 4 ' about 0.03mm in Figure 5, then reduce height difference H between the centre of luminescence of light source 8 and the mid-depth of light guide section 5 ' be:
H′＝(h
2+h
3/2)－(h
4′+h
1/2)＝0.205mm。
As mentioned above, the impingement rate of mid-depth more close to light of the centre of luminescence of LED 8b and the incidence end of light guide section 5 is higher in a thickness direction, the height difference H of the mid-depth of the centre of luminescence of preferred LED 8b and the incidence end of light guide section 5 is less than or equal to 1/4 of the height h3 of LED8b, i.e. ︱ (h2+h3/2)-(h4+h1/2) ︱≤h3/4.
Therefore, the preferable range of the thickness h 4 of Height Adjustment adhesive 7 is:
h2+3h3/4－h1/2≤h4≤h2+h3/4－h1/2。
Therefore, by rational height adjustment adhesive 7, both improve the impingement rate of the light from light source 8 in the incidence end of light guide section 5, ensure that slimming at the illuminating part 5b of light guide section 5 again, thus improve light utilization efficiency.
(variation)
In described sheet light emitting apparatus 3, be configured with 3 light guide sections 5 between display floater 1 and flexible strip 4, adjacent light guide section 5 is linked together by linking part 6, but the quantity of light guide section 5 and linking part 6 is not limited only to this.As long as there is more than one light guide section 5, just the utility model can be used.Obviously, when being only provided with one light guide section 5 between display floater 1 and flexible strip 4, do not need to arrange linking part 6.
In described sheet light emitting apparatus 3, adhesive can be had on whole with light reflection function of flexible strip 4, also can have adhesive in the part possessing a face of light reflection function of described flexible strip.Such as in the part overlapping with light guide section 5, only can have described adhesive in the position corresponding with the immediate vicinity of light guide section 5, also can bond light guide section 5 on the described face possessing light reflection function thus.
Claims (8)
1. a sheet light emitting apparatus, is characterized in that, has:
Flat display floater;
Flexible strip, possesses light reflection function and shade function;
Flat light guide section, is configured between described display floater and described flexible strip; And
Light source, is configured in the sidepiece of described light guide section,
Described flexible strip possess a face of light reflection function at least partially on there is adhesive,
By described adhesive, possess described in described light guide section is bonded on a face of light reflection function, and
Except the side adjacent with described light source, described flexible strip has the exposed portion of exposing from the surrounding of described light guide section, and by the described adhesive on this exposed portion, described display floater and described flexible strip are bonded together.
2. sheet light emitting apparatus as claimed in claim 1, is characterized in that,
Between described display floater and described flexible strip, be configured with multiple described light guide section, adjacent described light guide section is linked together by linking part.
3. sheet light emitting apparatus as claimed in claim 2, is characterized in that,
On the width vertical with link direction, the width of described linking part is less than the width of described light guide section.
4. sheet light emitting apparatus as claimed in claim 1, is characterized in that,
Described light guide section has flexibility,
Height Adjustment adhesive is provided with, to make the centre of luminescence of described light source in a thickness direction close or consistent with the center on the thickness direction of described light guide section between described display floater and described light guide section.
5. sheet light emitting apparatus as claimed in claim 4, is characterized in that,
Difference in height between center in a thickness direction on the centre of luminescence of described light source and the thickness direction of described light guide section is less than or equal to 1/4 of the size of light-emitting component on described thickness direction of described light source.
6. sheet light emitting apparatus as claimed in claim 1, is characterized in that,
Described flexible strip has reflection layer and light shield layer,
Described reflection layer is white or metallochrome, and described light shield layer is black.
7. the sheet light emitting apparatus according to any one of claim 1 ~ 6, is characterized in that,
Described exposed portion comprises first exposed portion of exposing with described light source opposite side from described light guide section and second exposed portion of exposing from the side of described light guide section.
8. sheet light emitting apparatus as claimed in claim 7, is characterized in that,
The length of described first exposed portion on the width vertical with link direction before bonding is greater than 1.4 times of the thickness of described light guide section.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515695.2U CN204176365U (en) | 2014-09-09 | 2014-09-09 | Sheet light emitting apparatus |
| KR2020150005760U KR200485851Y1 (en) | 2014-09-09 | 2015-08-28 | Planar light emitting device |
| JP2015004546U JP3201084U (en) | 2014-09-09 | 2015-09-08 | Planar light emitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515695.2U CN204176365U (en) | 2014-09-09 | 2014-09-09 | Sheet light emitting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204176365U true CN204176365U (en) | 2015-02-25 |
Family
ID=52565174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420515695.2U Active CN204176365U (en) | 2014-09-09 | 2014-09-09 | Sheet light emitting apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3201084U (en) |
| KR (1) | KR200485851Y1 (en) |
| CN (1) | CN204176365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352304A (en) * | 2016-10-19 | 2017-01-25 | 武汉华星光电技术有限公司 | Light guide plate structure and backlight module |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4600197B2 (en) | 2005-07-26 | 2010-12-15 | エプソンイメージングデバイス株式会社 | Display device |
| JP4813383B2 (en) | 2007-01-22 | 2011-11-09 | アルプス電気株式会社 | Light guide sheet |
| KR101042919B1 (en) * | 2008-12-02 | 2011-06-20 | 주식회사 하이디스 | Keypad assembly for mobile communication |
| JP2011071054A (en) | 2009-09-28 | 2011-04-07 | Shin Etsu Polymer Co Ltd | Light-emitting structure of portable equipment |
| KR101821286B1 (en) * | 2011-04-29 | 2018-01-23 | 엘지전자 주식회사 | Mobile terminal |
| KR101976067B1 (en) * | 2012-07-25 | 2019-05-09 | 삼성디스플레이 주식회사 | A display device providing touch emitting key unit |
-
2014
- 2014-09-09 CN CN201420515695.2U patent/CN204176365U/en active Active
-
2015
- 2015-08-28 KR KR2020150005760U patent/KR200485851Y1/en active IP Right Grant
- 2015-09-08 JP JP2015004546U patent/JP3201084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352304A (en) * | 2016-10-19 | 2017-01-25 | 武汉华星光电技术有限公司 | Light guide plate structure and backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3201084U (en) | 2015-11-19 |
| KR20160000915U (en) | 2016-03-17 |
| KR200485851Y1 (en) | 2018-03-05 |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan, Japan Patentee after: Alpine Alpine Company Address before: Tokyo, Japan, Japan Patentee before: Alps Electric Co., Ltd. |