CN107219669B - Display device - Google Patents
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- CN107219669B CN107219669B CN201710561973.6A CN201710561973A CN107219669B CN 107219669 B CN107219669 B CN 107219669B CN 201710561973 A CN201710561973 A CN 201710561973A CN 107219669 B CN107219669 B CN 107219669B
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- filter layer
- quantum dot
- display device
- blue light
- light
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- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- 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
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
-
- 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
- G02F1/133624—Illuminating devices characterised by their spectral emissions
Abstract
The invention provides a display device, which comprises a display panel and a backlight source which are arranged in a laminated manner; the display panel comprises a color light emitting layer and a filter layer, the color light emitting layer comprises a red light quantum dot area, a green light quantum dot area and a transparent area, the backlight source is a blue light backlight source and is used for providing blue light rays for the color light emitting layer, so that the red light quantum dot area, the green light quantum dot area and the transparent area respectively emit red light, green light and blue light, and the filter layer is used for absorbing part of the blue light emitted by the transparent area. By the display device, the blue light rays emitted from the transparent area can be reduced, so that the intensity of the blue light emitted from the transparent area is reduced, the intensity of the blue light emitted from the transparent area is the same as or similar to that of the blue light emitted from the other two light emitting areas, the light emitting intensities of the three light emitting areas are balanced, and the display effect is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
Lcd (liquid Crystal display) technology is currently the leading technology in the field of flat panel displays due to its many advantages, such as low power consumption, high image quality, and lightness. Quantum dots are widely used in displays because they can emit high-purity monochromatic light, which improves the color gamut and saturation of the display. The method is characterized in that a common color film substrate is distinguished, quantum dots are used in a color film layer, active ingredients in a red pixel area and a green pixel area can use the quantum dots, a blue pixel area uses an organic transparent material, a corresponding backlight source which emits blue light is used as the backlight source, and under the condition that other fluorescent powder is not required to be put into the backlight source, the red pixel area, the green pixel area and the blue pixel area can respectively emit red light, green light and blue light.
The inventor of the present application has found, through long-term research, that when blue light emitted by the blue light backlight passes through a blue pixel region of a transparent material, the intensity of the emitted blue light is significantly higher than the intensities of light emitted by other two pixel regions, which causes a difference in light intensity of the three pixel regions, thereby reducing the display effect of the display.
Disclosure of Invention
The invention mainly provides a display device, aiming at solving the problem that the intensity of blue light emitted by a transparent blue light-emitting area is greater than the intensity of red light and green light emitted by a red light quantum dot area and a green light quantum dot area, so that the display effect is reduced.
In order to solve the technical problems, the invention adopts a technical scheme that: the display device comprises a display panel and a backlight source which are arranged in a stacked mode; the display panel comprises a color light emitting layer and a filter layer, the color light emitting layer comprises a red light quantum dot area, a green light quantum dot area and a transparent area, the backlight source is a blue light backlight source and is used for providing blue light rays for the color light emitting layer, so that the red light quantum dot area, the green light quantum dot area and the transparent area respectively emit red light, green light and blue light, and the filter layer is used for absorbing part of the blue light emitted by the transparent area.
The invention has the beneficial effects that: different from the situation of the prior art, the invention reduces the blue light rays emitted from the transparent area by a method that the filter layer absorbs partial blue light rays emitted from the transparent area when the blue light backlight emits blue light rays to enable the red light quantum dot area, the green light quantum dot area and the transparent area of the color light-emitting layer to respectively emit red light, green light and blue light, thereby reducing the intensity of the blue light emitted from the transparent area, enabling the intensity of the blue light emitted from the transparent area to be the same as or similar to the intensity of the blue light emitted from the other two light-emitting areas, balancing the light-emitting intensities of the three light-emitting areas and improving the display effect.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display device according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display device according to a third embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, a display device provided by the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, a display device according to a first embodiment of the present invention includes a display panel 11 and a backlight 12 stacked together.
The backlight 12 is a blue backlight, and the display panel 11 provides blue light.
The display panel 11 includes an upper substrate 111 and a lower substrate 112 disposed opposite to each other, and a liquid crystal 113 is disposed between the upper substrate 111 and the lower substrate 112.
Optionally, the upper substrate 111 and the lower substrate 112 are glass substrates.
The display panel 11 includes a color light emitting layer 114 and a filter layer 115.
Specifically, the color emitting layer 114 is disposed on the upper substrate 111 or the lower substrate 112, and in the embodiment, the color emitting layer 114 is disposed on the upper substrate 111 as an example, and the filter layer 115 is disposed on the upper substrate 111.
The color light emitting layer 114 includes a red light quantum dot region 1141, a green light quantum dot region 1142 and a transparent region 1143, wherein quantum dot materials are disposed in the red light quantum dot region 1141 and the green light quantum dot region 1142, and the transparent region 1143 is an organic transparent material.
Further, when the backlight 12 disposed on the side of the lower substrate 112 far from the upper substrate 11 provides blue light to the color light emitting layer 114, the red light quantum dot region 1141, the green light quantum dot region 1142 and the transparent region 1143 emit red light and green light respectively under the excitation of the blue light, and the transparent region 1143 emits blue light under the irradiation of the blue light.
Optionally, the quantum dot material is a quantum dot material containing a spacer, such as cadmium selenide or cadmium sulfide.
Further, a black matrix 116 is disposed between the red light quantum dot region 1141, the green light quantum dot region 1142 and the transparent region 1143, and the black matrix 116 may be disposed on the upper substrate 111 or the lower substrate 112.
The filter layer 115 is disposed on a side of the color light emitting layer 114 away from the lower substrate 112 for absorbing a portion of the blue light emitted from the transparent region 1143, in this embodiment, the filter layer 115 is disposed as a whole layer, and in other embodiments, the filter layer 115 may also be disposed only corresponding to the position of the transparent region 1143.
Alternatively, the filter layer 115 is a yellow transparent film layer formed of a polyimide material, which includes, but is not limited to, polyimide varnish, pyromellitic dianhydride, benzophenone tetracarboxylic dianhydride, biphenyl ether dianhydride, and diaminodiphenyl ether.
In this embodiment, when the blue light backlight source emits blue light from bottom to top as shown in fig. 1, the blue light is not completely used to excite the blue light in the red light quantum dot region 1141 and the green light quantum dot region 1142 when passing through the red light quantum dot region 1141 and the green light quantum dot region 1142, and the blue light is still emitted from the red light quantum dot region 1141 and the green light quantum dot region 1142, and this part of the blue light is emitted into the filter layer 115 and is partially or completely absorbed by the filter layer 115, so that the red light and the green light emitted from the red light quantum dot region 1141 and the green light quantum dot region 1142 are purer in color, the display effect is improved, and when the blue light passes through the transparent region 1143 and causes the transparent region 1143 to emit blue light, the blue light emitted from the transparent region 1143 is emitted into the filter layer 115 and is partially absorbed by the filter layer 115, thereby reducing the light intensity of the.
Referring to fig. 2, the filter layer 215 in the second embodiment of the display device provided by the present invention includes a first filter layer 2151 and a second filter layer 2152, and other structures in this embodiment are the same as those in the first embodiment, and are not described again.
Optionally, the filter layer 215 may be patterned by a photolithography process including photoresist coating, exposure, development, and peeling to form the filter layer 215 including a substrate and a pattern portion, where the substrate is the first filter layer 2151 and the pattern portion is the second filter layer 2152; the filter layer 215 may be formed using a photosensitive polyimide photoresist film formation process.
The first filter layer 2151 is disposed on a side of the color light emitting layer 214 away from the backlight 22, the second filter layer 2152 includes a first protrusion 2153, the first protrusion 2153 extends from the first filter layer 2151 into the transparent area 2143 to absorb a portion of blue light in the transparent area 2143, and an extension of the first protrusion 2153 from the first filter layer 2151 to the transparent area 2143 may be determined according to practical applications, and is not limited herein.
In this embodiment, the first protrusion 2153 can increase the thickness of the filter layer 215 corresponding to the transparent area 2143, so as to increase the absorption intensity of the blue light at the position, and further reduce the intensity of the blue light emitted from the transparent area 2143.
Referring to fig. 3, the second filter layer 3152 of the filter layer 315 in the third embodiment of the display device further includes a second protrusion 3154 and a third protrusion 3155. Other structures in this embodiment are the same as those in the second embodiment, and are not described herein again.
The second protrusion 3154 extends from the first filter layer 3151 to the green quantum dot region 3142, and the third protrusion 3155 extends from the first filter layer 3152 to the red quantum dot region 3141.
Optionally, the first protrusion 3153, the second protrusion 3154, and the third protrusion 3155 have the same extension size.
Optionally, the extension sizes of the first protrusion 3153, the second protrusion 3154, and the third protrusion 3155 are sequentially decreased or increased.
In this embodiment, the second protrusion 3154 and the third protrusion 3155 respectively extend to the green light quantum dot region 3142 and the red light quantum dot region 3141, so that the space of the green light quantum dot region 3142 and the red light quantum dot region 3141 is reduced, that is, the quantum dots that can be disposed in the green light quantum dot region 3142 and the red light quantum dot region 3141 are reduced, so that the number of quantum dots in the green light quantum dot region 3142 and the red light quantum dot region 3141 can be adjusted according to the extension size of the second protrusion 3154 and the third protrusion 3155, and the intensity of green light and red light emitted from the green light quantum dot region 3142 and the red light quantum dot region 3141 can be adjusted, and at the same time, the intensity of blue light emitted from the transparent region 3143 is reduced by the first protrusion 3153, so that the emission intensities of the green light quantum dot region 3142, the red light quantum dot region 3141 and the transparent region can be adjusted according to the extension sizes of the first protrusion 3153, the second protrusion 3154 and the third protrusion 3155, the light intensity emitted by the three light emitting areas is more uniform.
Different from the situation of the prior art, the invention reduces the blue light rays emitted from the transparent area by a method that the filter layer absorbs partial blue light rays emitted from the transparent area when the blue light backlight emits blue light rays to enable the red light quantum dot area, the green light quantum dot area and the transparent area of the color light-emitting layer to respectively emit red light, green light and blue light, thereby reducing the intensity of the blue light emitted from the transparent area, enabling the intensity of the blue light emitted from the transparent area to be the same as or similar to the intensity of the blue light emitted from the other two light-emitting areas, balancing the light-emitting intensities of the three light-emitting areas and improving the display effect.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The display device is characterized by comprising a display panel and a backlight source which are arranged in a stacked mode;
the display panel comprises a color light emitting layer and a filter layer, the color light emitting layer comprises a red light quantum dot area, a green light quantum dot area and a transparent area, the backlight source is a blue light backlight source and is used for providing blue light rays for the color light emitting layer, so that the red light quantum dot area, the green light quantum dot area and the transparent area respectively emit red light, green light and blue light, the filter layer is used for absorbing part of the blue light emitted by the transparent area, the filter layer comprises a first filter layer and a second filter layer, the first filter layer is arranged on one side, away from the backlight source, of the color light emitting layer, the second filter layer comprises a first protruding portion, and the first protruding portion extends into the transparent area from the first filter layer to absorb part of the blue light in the transparent area.
2. The display device according to claim 1, wherein the filter layer is a yellow transparent film layer formed of a polyimide material.
3. The display device according to claim 1, wherein the filter layer is disposed on a side of the color light emitting layer away from the backlight source.
4. A display device according to claim 3, wherein the filter layer is provided in correspondence with the transparent region.
5. The display device according to claim 4, wherein the second filter layer further comprises second and third protrusions extending from the first filter layer to the green and red quantum dot regions, respectively.
6. The display device according to claim 5, wherein the first protruding portion, the second protruding portion, and the third protruding portion have the same extension size.
7. The display device according to claim 5, wherein the first protruding portion, the second protruding portion, and the third protruding portion have successively decreasing or increasing extension sizes.
8. The display device according to claim 1, wherein the display panel comprises an upper substrate and a lower substrate disposed opposite to each other, the color light emitting layer is disposed on the upper substrate or the lower substrate, the filter layer is disposed on the upper substrate, and the backlight source is disposed on a side of the lower substrate away from the upper substrate.
9. The display device according to claim 8, wherein a black matrix is disposed between the red quantum dot region, the green quantum dot region and the transparent region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561973.6A CN107219669B (en) | 2017-07-11 | 2017-07-11 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561973.6A CN107219669B (en) | 2017-07-11 | 2017-07-11 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107219669A CN107219669A (en) | 2017-09-29 |
| CN107219669B true CN107219669B (en) | 2020-02-04 |
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| CN201710561973.6A Active CN107219669B (en) | 2017-07-11 | 2017-07-11 | Display device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884981B (en) * | 2017-12-26 | 2020-06-23 | 深圳市华星光电技术有限公司 | Color film substrate, manufacturing method thereof and liquid crystal panel |
| US20190250462A1 (en) * | 2018-02-12 | 2019-08-15 | Innolux Corporation | Display device |
| US10762806B2 (en) * | 2018-04-24 | 2020-09-01 | Innolux Corporation | Display device |
| CN110727141A (en) * | 2019-10-23 | 2020-01-24 | 京东方科技集团股份有限公司 | Transparent display device, manufacturing method and control method |
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| CN103278876A (en) * | 2013-05-28 | 2013-09-04 | 京东方科技集团股份有限公司 | Quantum dot color filter and manufacturing method thereof and display device |
| CN203465442U (en) * | 2013-07-23 | 2014-03-05 | 京东方科技集团股份有限公司 | Color filter, liquid crystal panel and display device |
| WO2015041316A1 (en) * | 2013-09-20 | 2015-03-26 | 富士フイルム株式会社 | Liquid crystal display device and light conversion member |
| CN105185790A (en) * | 2015-09-24 | 2015-12-23 | 深圳市华星光电技术有限公司 | Array substrate and manufacturing method thereof |
| KR20160112499A (en) * | 2015-03-19 | 2016-09-28 | 동우 화인켐 주식회사 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
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2017
- 2017-07-11 CN CN201710561973.6A patent/CN107219669B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278876A (en) * | 2013-05-28 | 2013-09-04 | 京东方科技集团股份有限公司 | Quantum dot color filter and manufacturing method thereof and display device |
| CN203465442U (en) * | 2013-07-23 | 2014-03-05 | 京东方科技集团股份有限公司 | Color filter, liquid crystal panel and display device |
| WO2015041316A1 (en) * | 2013-09-20 | 2015-03-26 | 富士フイルム株式会社 | Liquid crystal display device and light conversion member |
| KR20160112499A (en) * | 2015-03-19 | 2016-09-28 | 동우 화인켐 주식회사 | Yellow curable resin composition, and color filter comprising thereof and display device comprising of the same |
| CN105185790A (en) * | 2015-09-24 | 2015-12-23 | 深圳市华星光电技术有限公司 | Array substrate and manufacturing method thereof |
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| CN107219669A (en) | 2017-09-29 |
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Address after: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |