CN113641034A - Optical module and backlight module - Google Patents
Optical module and backlight module Download PDFInfo
- Publication number
- CN113641034A CN113641034A CN202110266965.5A CN202110266965A CN113641034A CN 113641034 A CN113641034 A CN 113641034A CN 202110266965 A CN202110266965 A CN 202110266965A CN 113641034 A CN113641034 A CN 113641034A
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- Prior art keywords
- optical
- adjustment layer
- emitting element
- detection block
- light
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- 230000003287 optical effect Effects 0.000 title claims abstract description 159
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000002096 quantum dot Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 7
- 238000002310 reflectometry Methods 0.000 claims description 3
- 238000007650 screen-printing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013041 optical simulation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
Abstract
The invention discloses an optical module and a backlight module. The first light-emitting element is arranged on the circuit board; the first optical adjustment layer is arranged on the circuit board corresponding to the first light-emitting element; the detection block is arranged on the circuit board, and the detection block and the first optical adjustment layer are formed through the same process; the detection block is used for detecting to confirm the optical characteristics of the first optical adjustment layer. The invention adopts the same process to form the detection block and the optical adjustment layer corresponding to the optical element on the circuit board, and detects the detection block to know the optical characteristics of the optical adjustment layer, thereby tracking, controlling and controlling the optical adjustment layer, ensuring the optical adjustment effect of the optical adjustment layer on the corresponding light-emitting element and further ensuring the display effect of the backlight module and the display device.
Description
Technical Field
The present invention relates to an optical module and a backlight module, and more particularly, to an optical module and a backlight module capable of detecting optical characteristics of an optical adjustment layer.
Background
With the continuous development of liquid crystal display technology, the requirements for the backlight module supplying light sources to the liquid crystal display panel are also higher and higher. In order to improve the light uniformity of the backlight source, the position corresponding to the light-emitting component (such as an LED lamp bead) on the circuit board is provided with the ink layer for light adjustment, but the specification of the ink layer cannot be tracked and controlled due to the special printing area, so that the adjustment effect of the ink layer cannot be controlled.
Disclosure of Invention
The present invention provides an optical module and a backlight module to solve the above problems.
In order to achieve the above object, the present invention provides an optical module, which includes a circuit board, a first light emitting element, a second optical adjustment layer and a detection block, wherein the first light emitting element is disposed on the circuit board; the first optical adjustment layer is arranged on the circuit board corresponding to the first light-emitting element; the detection block is arranged on the circuit board, and the detection block and the first optical adjustment layer are formed through the same process; the detection block is used for detecting to confirm the optical characteristics of the first optical adjustment layer.
As an optional technical solution, the first optical adjustment layer and the detection block are made of fluorescent ink, black ink, red ink, blue ink or white ink.
As an optional technical solution, the first optical adjustment layer and the detection block are formed by screen printing.
As an optional technical solution, the detection block is rectangular, circular, elliptical, pentagonal or hexagonal.
As an optional technical solution, the circuit board has a first width in a first direction, and the detection block has the first width in the first direction.
As an optional technical solution, the optical characteristic includes at least one of a thickness, a uniformity, a reflectivity, an L value, an a value, and a b value.
As an optional technical solution, the optical module further includes a second light emitting element and a second optical adjustment layer disposed on the circuit board, the second optical adjustment layer corresponds to the second light emitting element, the second optical adjustment layer and the first optical adjustment layer are formed through the same process, and the detection block is disposed between the first optical adjustment layer and the second optical adjustment layer.
As an optional technical solution, the first optical adjustment layer includes a first region and a second region that are not connected, the light emitting element is located in the first region, and the second region surrounds the first region.
In addition, the invention also provides a backlight module which comprises a bottom plate, a reflector plate, the optical module and a quantum dot film, wherein the reflector plate is provided with a first hole; the optical module is arranged between the bottom plate and the reflector plate, and further comprises a first optical lens which covers the first light-emitting element and is exposed out of the first hole; the quantum dot film is arranged on the reflector plate and the optical module; wherein, a part of light emitted by the first light-emitting element is reflected to the first optical adjustment layer through the first optical lens and is excited by the first optical adjustment layer to be emitted to the quantum dot film.
As an optional technical solution, the first light emitting element is a blue LED, and the quantum dot film includes a red quantum dot material and a green quantum dot material.
According to the optical module, the backlight module and the display device, the detection block and the optical adjustment layer corresponding to the optical element are formed on the circuit board by adopting the same process, and the optical characteristics of the optical adjustment layer are known by detecting the detection block, so that the optical adjustment layer can be tracked, controlled and ensured, the optical adjustment effect of the optical adjustment layer on the light-emitting element corresponding to the optical adjustment layer is ensured, and the display effect of the backlight module and the display device is further ensured.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a cross-sectional view of a backlight module according to the present invention;
FIG. 2 is a top view of the optical module of FIG. 1;
FIG. 3 is a partial schematic view of an optical module of the present invention;
fig. 4 is a sectional view of a display device of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 3, fig. 1 is a cross-sectional view of a backlight module according to the present invention; FIG. 2 is a top view of the optical module of FIG. 1; fig. 3 is a partial schematic view of an optical module according to the present invention. As shown in fig. 1, the backlight module 1000 of the present invention includes an optical module 100, a bottom plate 200, a reflective sheet 300, and a quantum dot film 400. The optical module 100 is disposed between the base plate 200 and the reflective sheet 300, and the quantum dot film 400 is disposed on the reflective sheet 300 and the optical module 100.
As shown in fig. 2 and 3, the optical module 100 of the present invention includes a circuit board 110, a first light emitting element 120, a first optical adjustment layer 130, and a detection block 140. The first light emitting element 120 is disposed on the circuit board 110; the first optical adjustment layer 130 is disposed on the circuit board 110 corresponding to the first light emitting element 120; the detecting block 140 is also disposed on the circuit board 110, and the detecting block 140 and the first optical adjustment layer 130 are formed through the same process; the detection block 140 thus provides for detection to confirm the optical properties of the first optical adjustment layer 130.
In the backlight module 1000 of the present invention, the reflective sheet 300 further has a first hole (not shown), and the optical module 100 further includes a first optical lens 121, wherein the first optical lens 121 covers the first light emitting element 120 and is exposed from the first hole of the reflective sheet 300. As shown in fig. 2 and 3, the first optical adjustment layer 130 includes a first region 131 and a second region 132 that are not connected to each other, the light emitting device 120 is located in the first region 131, and the second region 132 surrounds the first region 131. When the backlight module 1000 operates, a part of the light emitted from the first light emitting element 120 is reflected to the first optical adjustment layer 130 through the first optical lens 121 and is excited from the first optical adjustment layer 130 to be emitted to the quantum dot film 400. In practice, the first optical adjustment layer 130 may be configured in other shapes, but not limited thereto.
Referring to fig. 4, fig. 4 is a cross-sectional view of a display device according to the present invention. The display device 2000 of the present invention comprises a display panel 2100 and a backlight module 1000, wherein the display panel 2100 is assembled on the backlight module 1000, and the backlight module 1000 provides a backlight source to the display panel 2100.
At present, people have higher and higher requirements for display devices, and for the display device 2000 of this embodiment, the direct type module 1000 and the High-Dynamic Range (HDR) are adopted to achieve better display effect. In this embodiment, the first light emitting element 120 is a blue LED, and the quantum dot film 400 includes a red quantum dot material and a green quantum dot material, so that the first light emitting element 120 and the quantum dot film 400 cooperate to improve the color gamut of the display device 2000. In order to avoid the display defect of the display device 2000 caused by the quantum dot film 400 excited by the blue LED, for example, the problem of poor overall display effect of the display device 2000 caused by the dark blue picture above the first light emitting element 120 or the dark light at the boundary position corresponding to the adjacent light emitting element, the first optical adjustment layer 130 is disposed on the circuit board 110 corresponding to the first light emitting element 120. Since the first optical adjustment layer 130 is disposed corresponding to the first light emitting element 120, its irregular large-sized block pattern cannot be directly measured and confirmed by using a detection device for the optical characteristics of the first optical adjustment layer 130. In the present invention, the first optical adjustment layer 130 and the detection block 140 are formed on the circuit board 110 by the same process, and the optical characteristics of the first optical adjustment layer 130 are known by detecting the detection block 140, so that the first optical adjustment layer 130 can be tracked and controlled, the optical adjustment effect of the first optical adjustment layer 130 on the corresponding first light emitting element 120 is ensured, and the display effects of the backlight module 1000 and the display device 2000 are further ensured.
In practice, the target optical properties of first optical adjustment layer 130, such as target thickness, target L, a, b values, etc., may be determined by optical simulation prior to fabrication of a sample of optical module 100. When the optical characteristics of the first optical adjustment layer 130 are determined not to satisfy the target optical characteristics through the detection of the detection block 140, the first optical adjustment layer 130 and the detection block 140 can be adjusted through the same process, and the detection block 140 is detected again after the adjustment until the optical characteristics of the first optical adjustment layer 130 satisfy the target optical characteristics. At this time, parameters for fabricating the first optical adjustment layer 130 are recorded for application in mass production. During mass production, the detection block 140 can be detected by sampling, etc. to know the optical characteristics of the first optical adjustment layer 130 in time.
In one embodiment, the first optical adjustment layer 130 and the detection block 140 are made of fluorescent ink, black ink, red ink, blue ink or white ink, and the first optical adjustment layer 130 and the detection block 140 can be formed by screen printing. When the backlight module 1000 works, a part of the light emitted by the first light emitting element 120 directly passes through the first optical lens 121 and reaches the quantum dot film 140 to excite the quantum dot film 140, and another part of the light is reflected by the first optical lens 121 and reaches the first optical adjustment layer 130, and is adjusted by the first optical adjustment layer 130 and then emitted from the first optical lens 121 again to reach the quantum dot film 140. In practice, when the first optical adjustment layer 130 is a fluorescent ink, it can be a yellow fluorescent ink, and the first light emitting element 120 can be a blue LED. In practice, the backlight module 1000 may further include a diffuser plate (not shown), and the quantum dot film 400 is disposed on the diffuser plate. Still alternatively, the quantum dot film 400 may be a diffusion plate doped with a quantum dot material. The user can design according to actual need.
In this embodiment, the detecting block 140 has a rectangular shape. As shown in fig. 2 and 3, the circuit board 110 has a first width w1 in the first direction F1, and the detecting block 140 has a first width w1 in the first direction F1, i.e., in the first direction F1, the size of the detecting block 140 is the same as the size of the circuit board 110. In the present embodiment, the first direction F1 is the width direction of the circuit board 110, so that the detection block 140 has the largest dimension on the circuit board 110 in the first direction F1. The detecting block 140 may have a first length l1 in the second direction F2, in this embodiment, the first length l1 is greater than the first width w1, so that the detecting block 140 has a rectangular shape. When the first length l1 is equal to the first width w1, the detection block 140 has a square shape. In practical applications, the detection block 140 may be circular, elliptical, pentagonal, hexagonal, or the like, and the shape and size are not limited to the above, and the detection block 140 may be optically detected smoothly.
In practice, the optical characteristics of the detecting block 140 are measured, and the optical characteristics include at least one of the thickness, uniformity, reflectivity, L value, a value and b value of the film layer. In this embodiment, the detection block 140 may be subjected to an optical eye-ellipse-viewing color three-dimensional space test by a detection device, where the L, a, and b values represent the chromaticity values of the object color, that is, the color space coordinates of the color, and any color has a unique coordinate value; wherein the value of L represents the lightness (black and white), the value of a represents the red and green, and the value of b represents the yellow and blue. By measuring the detection block 140, the optical characteristics of the first optical adjustment layer 130 formed in the same process can be accurately known, and the problem that the optical adjustment effect cannot be estimated/controlled due to the inability to monitor the specification and quality of the first optical adjustment layer 130 can be avoided.
As shown in fig. 2 and 3, the optical module 110 further includes a second light emitting element 150 and a second optical adjustment layer 160 disposed on the circuit board 110, the second optical adjustment layer 160 corresponds to the second light emitting element 150, the second optical adjustment layer 160 and the first optical adjustment layer 130 are formed through the same process, and the detecting block 140 is disposed between the first optical adjustment layer 130 and the second optical adjustment layer 160. That is, the detection block 140 is disposed in a region of the circuit board 110 where no light emitting element is disposed, for example, a region between two adjacent light emitting elements. Thus, on the one hand, normal manufacturing of the light-emitting element and the optical adjustment layer corresponding thereto is not affected. On the other hand, as shown in fig. 1, when the optical module 100 is applied to the backlight module 1000, since the circuit board 110 is located under the reflector 300, only the optical lens corresponding to each light-emitting element is exposed from the corresponding hole on the reflector 300, and at this time, the detecting block 140 is shielded by the reflector 300, so that the detecting block 140 does not affect the light emitted by each light-emitting element when the backlight module 1000 is in operation, and the light-emitting effect of the backlight module 1000 is ensured.
According to the optical module, the backlight module and the display device, the detection block and the optical adjustment layer corresponding to the optical element are formed on the circuit board by adopting the same process, and the optical characteristics of the optical adjustment layer are known by detecting the detection block, so that the optical adjustment layer can be tracked, controlled and ensured, the optical adjustment effect of the optical adjustment layer on the light-emitting element corresponding to the optical adjustment layer is ensured, and the display effect of the backlight module and the display device is further ensured.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. An optical module, comprising:
a circuit board is provided with a plurality of circuit boards,
the first light-emitting element is arranged on the circuit board;
the first optical adjustment layer is arranged on the circuit board corresponding to the first light-emitting element; and
the detection block is arranged on the circuit board, and the detection block and the first optical adjustment layer are formed through the same process; the detection block is used for detecting to confirm the optical characteristics of the first optical adjustment layer.
2. The optical module of claim 1, wherein: the first optical adjustment layer and the detection block are made of fluorescent ink, black ink, red ink, blue ink or white ink.
3. The optical module of claim 2, wherein: the first optical adjustment layer and the detection block are formed by screen printing.
4. The optical module of claim 1, wherein: the detection block is rectangular, circular, elliptical, pentagonal or hexagonal.
5. The optical module of claim 1, wherein: the circuit board has a first width in a first direction, and the detection block has the first width in the first direction.
6. The optical module of claim 1, wherein: the optical characteristic includes at least one of thickness, uniformity, reflectivity, L value, a value and b value.
7. The optical module of claim 1, wherein: the optical module also comprises a second light-emitting element and a second optical adjusting layer which are arranged on the circuit board, the second optical adjusting layer corresponds to the second light-emitting element, the second optical adjusting layer and the first optical adjusting layer are formed through the same procedure, and the detection block is arranged between the first optical adjusting layer and the second optical adjusting layer.
8. The optical module of claim 1, wherein: the first optical adjustment layer comprises a first area and a second area which are not connected, the light-emitting element is positioned in the first area, and the second area surrounds the first area.
9. A backlight module is characterized by comprising:
a base plate;
the reflector plate is provided with a first hole;
the optical module of any one of claims 1 to 8, disposed between the base plate and the reflector plate, further comprising a first optical lens covering the first light emitting element and exposed from the first hole;
a quantum dot film disposed on the reflective sheet and the optical module;
wherein, a part of light emitted by the first light-emitting element is reflected to the first optical adjustment layer through the first optical lens and is excited by the first optical adjustment layer to be emitted to the quantum dot film.
10. A backlight module according to claim 9, wherein: the first light emitting element is a blue light LED, and the quantum dot film comprises a red quantum dot material and a green quantum dot material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266965.5A CN113641034A (en) | 2021-03-11 | 2021-03-11 | Optical module and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110266965.5A CN113641034A (en) | 2021-03-11 | 2021-03-11 | Optical module and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113641034A true CN113641034A (en) | 2021-11-12 |
Family
ID=78415726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110266965.5A Pending CN113641034A (en) | 2021-03-11 | 2021-03-11 | Optical module and backlight module |
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| Country | Link |
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| CN (1) | CN113641034A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001041222A1 (en) * | 1999-11-30 | 2001-06-07 | Omron Corporation | Optical device and apparatus comprising the optical device |
| JP2006303478A (en) * | 2005-03-24 | 2006-11-02 | Toray Ind Inc | Reflector for led |
| JP2008170496A (en) * | 2007-01-09 | 2008-07-24 | ▲ぎょく▼瀚科技股▲ふん▼有限公司 | Backlight module with fluorescent layer and display device |
| KR20100006099A (en) * | 2008-07-08 | 2010-01-18 | (주) 아모엘이디 | Semiconductor package |
| US20110309388A1 (en) * | 2010-06-16 | 2011-12-22 | Ito Kosaburo | Semiconductor light-emitting device and manufacturing method |
| US20120061709A1 (en) * | 2009-03-09 | 2012-03-15 | Tridonic Jennersdorf Gmbh | Led module with improved light output |
| US20150219966A1 (en) * | 2014-02-05 | 2015-08-06 | Samsung Display Co., Ltd. | Light source module, backlight assembly including the same, and display device including the light source module |
| CN104948949A (en) * | 2015-05-14 | 2015-09-30 | 达亮电子（苏州）有限公司 | Light-emitting module |
| CN111338119A (en) * | 2018-12-19 | 2020-06-26 | 上海仪电显示材料有限公司 | Color filter substrate and chromaticity measuring method |
-
2021
- 2021-03-11 CN CN202110266965.5A patent/CN113641034A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001041222A1 (en) * | 1999-11-30 | 2001-06-07 | Omron Corporation | Optical device and apparatus comprising the optical device |
| JP2006303478A (en) * | 2005-03-24 | 2006-11-02 | Toray Ind Inc | Reflector for led |
| JP2008170496A (en) * | 2007-01-09 | 2008-07-24 | ▲ぎょく▼瀚科技股▲ふん▼有限公司 | Backlight module with fluorescent layer and display device |
| KR20100006099A (en) * | 2008-07-08 | 2010-01-18 | (주) 아모엘이디 | Semiconductor package |
| US20120061709A1 (en) * | 2009-03-09 | 2012-03-15 | Tridonic Jennersdorf Gmbh | Led module with improved light output |
| US20110309388A1 (en) * | 2010-06-16 | 2011-12-22 | Ito Kosaburo | Semiconductor light-emitting device and manufacturing method |
| US20150219966A1 (en) * | 2014-02-05 | 2015-08-06 | Samsung Display Co., Ltd. | Light source module, backlight assembly including the same, and display device including the light source module |
| CN104948949A (en) * | 2015-05-14 | 2015-09-30 | 达亮电子（苏州）有限公司 | Light-emitting module |
| CN111338119A (en) * | 2018-12-19 | 2020-06-26 | 上海仪电显示材料有限公司 | Color filter substrate and chromaticity measuring method |
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