CN102313208A - Backlight module group - Google Patents
Backlight module group Download PDFInfo
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- CN102313208A CN102313208A CN 201110260100 CN201110260100A CN102313208A CN 102313208 A CN102313208 A CN 102313208A CN 201110260100 CN201110260100 CN 201110260100 CN 201110260100 A CN201110260100 A CN 201110260100A CN 102313208 A CN102313208 A CN 102313208A
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- China
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- light source
- light
- linear light
- backlight module
- diffusing plate
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Abstract
The invention discloses a backlight module group, which comprises a plurality of linear light sources in parallel arrangement and a diffusing plate arranged above the linear light sources, wherein a plurality of bulges are arranged on the surface of the diffusing plate, and in addition, the included angle of the two adjacent bulges or the included angle of tangent lines of the adjacent bulges is gradually increased from the position with the shortest distance from the linear light source to the center part of the adjacent linear light source. Through the special miniature bulges arranged on the surface of the diffusing plate, the brightness of the lower light source can be effectively inhibited in the corresponding light source part, so after the light is emitted out from the light source, the light traveling route is changed through the miniature structures specially designed on the surface of the diffusing plate, the light passing degree is controlled through the total reflection principle, the emergent light is uniform, further, the light source is fuzzified, and the defect of nonuniform brightness phenomenon caused by too large space between the light sources is effectively overcome. Through an optical component specially designed in the embodiment of the invention, the product quality is improved, in addition, the light source adoption number of the backlight module group can be reduced, and the cost of the backlight module group is reduced.
Description
Technical field
The present invention relates to a kind of module backlight, particularly a kind of down straight aphototropism mode set.
Background technology
Because the manufacturing technology of TFT-LCD (TFT LCD) is progressive fast; With its have gently, approach, power saving and advantage such as radiationless; Therefore make TFT-LCD be applied in widely on the industries such as notebook computer, LCD screen and TV; But,, just can show the picture of the required performance of liquid crystal panel so need to cooperate the light source that backlight module provided because liquid crystal panel is not the emissive type display device.Usually comprise for down straight aphototropism mode set: optical diaphragm group (Films), diffuser plate (Diffuser plate), reflector plate (Reflector), backboard and light emitting source, as shown in Figure 1.Down straight aphototropism mode set is by the light that light emitting source sent, and from the incidence surface incident of diffuser plate, changes the direct of travel of light by the diffusion particle of diffuser plate, can obtain uniform surface light source at exiting surface, and then provide liquid crystal panel needed light source.If the distance (Pitch) between light emitting source is excessive, will between light emitting source, cause the dark space, produce the uneven optics grade bad phenomenon (being the Mura phenomenon) of light and shade, as shown in Figure 2.Though the distance of dwindling between light source can be improved above-mentioned problem, therefore the employed light emitting source quantity of module backlight can increase, and causes the cost of module backlight to improve.
Summary of the invention
Goal of the invention: the problem and shortage to above-mentioned existing existence the purpose of this invention is to provide a kind of module backlight that improves bright dark inequality.
Technical scheme: for realizing the foregoing invention purpose; The technical scheme that the present invention adopts is a kind of module backlight; Comprise a plurality of linear light sorurces that laterally arrange and the diffuser plate that places said linear light sorurce top; Said diffuser plate surface is provided with a plurality of convexities, and from the distance one linear light sorurce the most nearby to the centre of this linear light sorurce and adjacent linear light source, the angle of the angle of two adjacent protrusion or the tangent line of adjacent protrusion increases gradually.This linear light sorurce can be CCFL (Cold Cathode Fluorescent Lamp; Cold cathode fluorescent lamp), EEFL (External Electrode Fluorescent Lamp; External electrode fluorescence lamp), HCFL (Hot Cathode Fluorescent Lamp, hot-cathode fluorescent lamp) etc.
The shape of said convexity can be triangle.The shape of said convexity can be isosceles triangle.The shape of said convexity can be arc.
Beneficial effect: the present invention is by diffuser plate surface special small geometrical structure (convexity), the brightness of light source below the corresponding light source place can effectively suppress, make the light source bright dipping after; Change the course of light through the micro-structure of diffuser plate surface particular design; Utilize the degree that sees through of the principle control light of total reflection, make the outgoing light uniformization, and then with the light source obfuscation; Make originally the bright dark uneven phenomenon that is produced when excessive because of space between light sources, obtain to improve effectively.By the optics of embodiment of the invention particular design, not only promote the quality of product, and can reduce the light source usage quantity of module backlight, reduce the cost of module backlight.
Description of drawings
Fig. 1 is the down straight aphototropism mode set partial cutaway schematic;
Fig. 2 shows the sketch map that light and shade is uneven for display panels;
Fig. 3 is the mode of the advancing sketch map of the incident light of the embodiment of the invention 1, and wherein Fig. 3 (A) gets into the mode of the advancing sketch map of the less convexity of angle for incident light, and Fig. 3 (B) gets into the mode of the advancing sketch map of the bigger convexity of angle for incident light;
Fig. 4 is the bulge-structure sketch map of the embodiment of the invention 1;
Fig. 5 is the mode of the advancing sketch map of the incident light of the embodiment of the invention 2, and wherein Fig. 5 (A) gets into the mode of the advancing sketch map of the less convexity of angle for incident light, and Fig. 5 (B) gets into the mode of the advancing sketch map of the bigger convexity of angle for incident light;
Fig. 6 is the bulge-structure sketch map of the embodiment of the invention 2.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
The present invention proposes to change the geometric angle of diffuser plate surface texture (convexity), uses the direct of travel and the behavior that change light.
Embodiment 1:
Present embodiment proposes a kind of triangular structure, and light has following traveling mode after getting into diffuser plate: 1, incident light can be via the mode outgoing backlight forward of refraction; 2, incident light can leave via refraction; 3, incident light can oppositely be got back in the backlight because of total reflection (TIR), and is as shown in Figure 3.It is protruding that the diffuser plate surface is provided with some small isosceles triangles; The distance of adjacent protrusion is greater than visible wavelength; And less than the light source diameter, the angle of adjacent protrusion changes along with the position of light source, and is minimum apart from the angle of light source adjacent protrusion the most nearby; Angle increases with distance and becomes big, its relation be 1＞angle, angle 2＞... ..＞angle n; D1＜d2＜d3＜... ..＜dn, as shown in Figure 4, the central authorities of two adjacent light source are approximately dropped in the maximum angle position.Mostly its behavior is total reflection for low-angle structure because of incident light, and the proportion that increases total reflection with angle reduces gradually, therefore can control out light energy.
Embodiment 2:
Present embodiment proposes a kind of curved surfaces structure, and light has following traveling mode after getting into diffuser plate: 1, incident light can be via the mode outgoing backlight forward of refraction; 2, incident light can oppositely be got back in the backlight because of total reflection (TIR), and is as shown in Figure 5.The diffuser plate surface is provided with some small arc convex; The distance of adjacent protrusion is greater than visible wavelength; And less than the light source diameter, the tangent line angle of adjacent protrusion changes along with the position of light source, and is minimum apart from the angle of the tangent line of light source adjacent protrusion the most nearby; Angle increases with distance and becomes big, its relation be 1＞angle, angle 2＞... ..＞angle n; D1＜d2＜d3＜... ..＜dn, as shown in Figure 6, the central authorities of two adjacent light source are approximately dropped in maximum angular angle position.Mostly its behavior is total reflection for low-angle structure because of incident light, and the proportion that increases total reflection with angle reduces gradually, therefore can control out light energy.
Claims (4)
1. module backlight; Comprise a plurality of linear light sorurces that laterally arrange and the diffuser plate that places said linear light sorurce top; It is characterized in that: said diffuser plate surface is provided with a plurality of convexities; And the most nearby to the centre of this linear light sorurce and adjacent linear light source, the angle of the angle of two adjacent protrusion or the tangent line of adjacent protrusion increases gradually from distance one linear light sorurce.
2. according to the said module backlight of claim 1, it is characterized in that: said convexity be shaped as triangle.
3. according to the said module backlight of claim 2, it is characterized in that: said convexity be shaped as isosceles triangle.
4. according to the said module backlight of claim 1, it is characterized in that: said convexity be shaped as arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110260100 CN102313208A (en) | 2011-09-05 | 2011-09-05 | Backlight module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110260100 CN102313208A (en) | 2011-09-05 | 2011-09-05 | Backlight module group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102313208A true CN102313208A (en) | 2012-01-11 |
Family
ID=45426618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110260100 Pending CN102313208A (en) | 2011-09-05 | 2011-09-05 | Backlight module group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102313208A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501267A (en) * | 2016-10-18 | 2017-03-15 | 凌云光技术集团有限责任公司 | Linear light source device and system for surface defects detection |
| CN109188777A (en) * | 2018-10-31 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN109270735A (en) * | 2018-10-25 | 2019-01-25 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN112413469A (en) * | 2020-11-03 | 2021-02-26 | 浙江凯耀照明有限责任公司 | Side-lighting panel lamp |
| CN115980909A (en) * | 2023-03-22 | 2023-04-18 | 惠科股份有限公司 | Light emitting module and display device |
| US11716888B2 (en) | 2019-01-02 | 2023-08-01 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display substrate comprising scattering structure formed in anode and including plurality of mutually staggered grooves, method for preparing the same, and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797091A (en) * | 2004-12-30 | 2006-07-05 | 中强光电股份有限公司 | Direct type backlight module |
-
2011
- 2011-09-05 CN CN 201110260100 patent/CN102313208A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797091A (en) * | 2004-12-30 | 2006-07-05 | 中强光电股份有限公司 | Direct type backlight module |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501267A (en) * | 2016-10-18 | 2017-03-15 | 凌云光技术集团有限责任公司 | Linear light source device and system for surface defects detection |
| CN109270735A (en) * | 2018-10-25 | 2019-01-25 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN109270735B (en) * | 2018-10-25 | 2021-08-17 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN109188777A (en) * | 2018-10-31 | 2019-01-11 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| US11716888B2 (en) | 2019-01-02 | 2023-08-01 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display substrate comprising scattering structure formed in anode and including plurality of mutually staggered grooves, method for preparing the same, and display device |
| CN112413469A (en) * | 2020-11-03 | 2021-02-26 | 浙江凯耀照明有限责任公司 | Side-lighting panel lamp |
| CN115980909A (en) * | 2023-03-22 | 2023-04-18 | 惠科股份有限公司 | Light emitting module and display device |
| CN115980909B (en) * | 2023-03-22 | 2023-07-18 | 惠科股份有限公司 | Light emitting component and display device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120111 |