CN113109968A - Display device and color temperature adjusting method thereof - Google Patents
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- CN113109968A CN113109968A CN202010031934.7A CN202010031934A CN113109968A CN 113109968 A CN113109968 A CN 113109968A CN 202010031934 A CN202010031934 A CN 202010031934A CN 113109968 A CN113109968 A CN 113109968A
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- 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
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
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- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
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- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
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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
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
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- 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
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- 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
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Abstract
The invention discloses a display device and a color temperature adjusting method thereof, wherein the display device comprises: the backlight module comprises a backlight module and a display panel; the backlight module includes: the circuit board has a bearing function and is used for providing a driving signal; the light source is arranged on the circuit board; the light source comprises a first light source and a second light source, the first light source and the second light source are driven independently, and the color temperature of the first light source is larger than that of the second light source. The first light source and the second light source with different color temperatures are arranged in the backlight module, and the two light sources can be independently driven, so that the brightness ratio of the second light source can be increased when the color temperature is higher, and the purpose of reducing the color temperature is achieved; when the color temperature is lower, the brightness proportion of the first light source is increased, so that the purpose of improving the color temperature is achieved. Therefore, the color temperature of the display device can be adjusted on the premise of not sacrificing the color types, and the color temperature requirement of the display device is met.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a color temperature adjusting method thereof.
Background
With the development of display technology, liquid crystal display technology is widely used in the display field. The lcd panel itself cannot emit light, and the backlight module is required to provide the required brightness for displaying.
The backlight module generally provides white backlight, and the pixel unit of the liquid crystal display panel comprises color resistors with different colors, and light rays with different colors and different brightness in the pixel unit are emitted by adjusting the transmittance of the backlight through liquid crystal and matching with the specific color of the color resistor, so that a display image is formed.
The initial color temperature of the display device is the corresponding color temperature when displaying a white picture, and the color temperatures of the backlight and the panel are matched in an ideal state. However, in the actual production process, the color temperature of the display equipment inevitably shifts due to the fluctuation of materials, and the display effect is influenced.
Disclosure of Invention
The invention provides a display device and a color temperature adjusting method thereof, which are used for adjusting the color temperature of the display device.
In a first aspect, the present invention provides a display device comprising:
the backlight module is used for providing backlight;
the display panel is positioned on the light emitting side of the backlight module and used for displaying images;
the backlight module includes:
the circuit board has a bearing function and is used for providing a driving signal;
the light source is arranged on the circuit board;
the light source comprises a first light source and a second light source, and the first light source and the second light source are independently driven; the color temperature of the first light source is greater than the color temperature of the second light source.
In one possible implementation manner, in the display device provided by the present invention, the light source includes:
the light emitting chip is arranged on the circuit board and used for emitting monochromatic light;
the packaging structure is positioned on one side of the light-emitting chip, which is far away from the circuit board, and is used for packaging and protecting the light-emitting chip;
the packaging structure of the first light source is transparent and colorless, and fluorescent powder is mixed in the packaging structure of the second light source;
the backlight module further comprises:
and the quantum dot film layer is positioned on the light emergent side of the light source.
In a possible implementation manner, in the display device provided by the present invention, the light emitting chip is a blue micro light emitting diode; the packaging structure is a packaging layer, and the packaging layer covers the surface of one side, away from the circuit board, of the blue light micro light-emitting diode;
the packaging layer on the surface of the blue light micro light-emitting diode in the first light source is transparent and colorless;
and fluorescent powder is doped in the packaging layer on the surface of the blue light micro light-emitting diode in the second light source.
In a possible implementation manner, in the display device provided by the present invention, the phosphor is a yellow phosphor; or the fluorescent powder is a mixture of red fluorescent powder and green fluorescent powder.
In a possible implementation manner, in the display device provided by the invention, the size of the blue micro light emitting diode is 50 μm-300 μm.
In a possible implementation manner, in the display device provided by the present invention, the backlight module further includes:
a light guide plate for guiding light;
the light source is positioned at the light incident side of the light guide plate; the quantum dot film layer is located on the light emitting side of the light guide plate.
In a possible implementation manner, in the display device provided by the present invention, the circuit board is a strip circuit board; the first light sources and the second light sources are alternately arranged in a row along the extending direction of the strip-shaped circuit board;
the packaging layer comprises a plurality of point-shaped packaging parts, and the point-shaped packaging parts correspond to the blue light micro light-emitting diodes one by one; orthographic projections of two adjacent dot-shaped packaging parts on the circuit board are not overlapped.
In a possible implementation manner, in the display device provided by the present invention, the circuit board is a strip circuit board; the first light sources and the second light sources are respectively arranged in a row along the extending direction of the strip-shaped circuit board;
the packaging layer comprises two strip-shaped packaging parts, one strip-shaped packaging part corresponds to a row of blue light micro light-emitting diodes of the first light source, and the other strip-shaped packaging part corresponds to a row of blue light micro light-emitting diodes of the second light source.
In a possible implementation manner, in the display device provided by the present invention, the circuit board is a block-shaped circuit board; the first light sources and the second light sources are arranged on the blocky circuit board in an array; the first light sources and the second light sources are alternately arranged in the directions of rows and columns;
the packaging layer comprises a plurality of point-shaped packaging parts, and the point-shaped packaging parts correspond to the blue light micro light-emitting diodes one by one; orthographic projections of two adjacent dot-shaped packaging parts on the circuit board are not overlapped.
In a second aspect, the present invention provides a color temperature adjusting method based on any one of the display devices, including:
adjusting each pixel of the display device to the highest gray scale for displaying;
if the current color temperature of the display device is higher than a preset standard color temperature value, increasing the brightness of the second light source and/or reducing the brightness of the first light source;
and if the current color temperature of the display device is lower than the preset standard color temperature value, increasing the brightness of the first light source and/or reducing the brightness of the second light source.
The invention has the following beneficial effects:
the invention provides a display device and a color temperature adjusting method thereof, wherein the display device comprises: the backlight module is used for providing backlight; the display panel is positioned on the light emitting side of the backlight module and used for displaying images; the backlight module includes: the circuit board has a bearing function and is used for providing a driving signal; the light source is arranged on the circuit board; the light source comprises a first light source and a second light source, the first light source and the second light source are driven independently, and the color temperature of the first light source is larger than that of the second light source. The first light source and the second light source with different color temperatures are arranged in the backlight module, and the two light sources can be independently driven, so that the brightness ratio of the second light source can be increased when the color temperature is higher, and the purpose of reducing the color temperature is achieved; when the color temperature is lower, the brightness proportion of the first light source is increased, so that the purpose of improving the color temperature is achieved. Therefore, the color temperature of the display device can be adjusted on the premise of not sacrificing the color types, and the color temperature requirement of the display device is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a backlight module according to an embodiment of the invention;
fig. 3 is a schematic top view of a backlight module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an emission spectrum of a first light source according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an emission spectrum of a second light source according to an embodiment of the present invention;
FIG. 6 is a second schematic cross-sectional view illustrating a backlight module according to an embodiment of the present invention;
FIG. 7 is a schematic top view of the light bar of FIG. 6;
fig. 8 is a third schematic cross-sectional view illustrating a backlight module according to an embodiment of the invention;
FIG. 9 is a schematic top view of the light bar of FIG. 8;
FIG. 10 is a schematic cross-sectional view of a direct-type backlight module according to an embodiment of the present invention;
fig. 11 is a schematic cross-sectional structure view of a side-entry backlight module according to an embodiment of the present invention;
fig. 12 is a flowchart of a color temperature adjustment method of a display device according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.
The principle of a Liquid Crystal Display (LCD) is to place Liquid Crystal between two pieces of conductive glass, drive an electric field by electrodes on both sides to cause Liquid Crystal molecules to turn over, so as to control light source transmission or shielding, generate light and shade changes, and Display an image.
If a color filter is added, a color image can be displayed. One pixel of the liquid crystal display is generally composed of 3 sub-pixels, and three color filters of red, green, and blue (RGB) are respectively provided to display three colors of red, green, and blue, respectively. With RGB color mixing, different colors can be represented. Taking an 8-bit panel as an example, 16.7M colors can be mixed by RGB color mixing with different brightness.
The liquid crystal panel does not emit light, the backlight module is required to provide light, the liquid crystal panel plays a role in selective transmission, and the backlight module of the liquid crystal display and the liquid crystal panel jointly act to generate images. The initial display color temperature of the display is a corresponding color temperature when a white screen is displayed. In the actual production process, due to the fluctuation of materials, the problem of unmatched color temperature of the backlight and the panel inevitably occurs, so that the final display color temperature of the display is not required.
The current method for adjusting the display color temperature of the display can only be realized by adjusting the display brightness ratio of the three RGB sub-pixels. For example, in an 8-bit panel, the R sub-pixels have 0 to 255 gray scales for a total of 256 gray scales, the G sub-pixels have 0 to 255 gray scales for a total of 256 gray scales, and the B sub-pixels have 0 to 255 gray scales for a total of 256 gray scales. When white is normally displayed, R is 255, G is 255, and B is 255, and if the color temperature of the display is not desired, the display luminance of the sub-pixel needs to be reduced. For example, if the color temperature of the display is high, the luminance of the B sub-pixel needs to be reduced, and the output value during display may be changed to R255, G255, and B200, which reduces the color type that can be displayed from 256 × 256 × 256 to 256 × 256 × 200, at the expense of the final display luminance, as well as the type of the color that can be displayed.
In view of this, embodiments of the present invention provide a display device, which can adjust a color temperature of the display device as needed without affecting a data signal of a display panel.
Fig. 1 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the present invention, and as shown in fig. 1, the display device according to the embodiment of the present invention includes:
the backlight module 100 is used for providing backlight.
The backlight module 100 can uniformly emit light in the whole light emitting surface, and is used for providing light with sufficient brightness and uniform distribution for the display panel, so that the display panel can normally display images.
The display panel 200 is located on the light emitting side of the backlight module 100 for displaying images.
The display panel 200 has a plurality of pixel units arranged in an array, and each pixel unit can independently control the transmittance and color of light incident to the pixel unit from the backlight module 100, so that the light transmitted by all the pixel units forms a displayed image.
The display device provided by the embodiment of the invention can be a display device such as a liquid crystal display screen, a liquid crystal display, a liquid crystal television and the like, and can also be a mobile terminal such as a mobile phone, a tablet personal computer, an intelligent photo album and the like. The display device adopts the backlight module to provide backlight, and the display panel modulates the light emitted by the backlight module to realize image display.
Fig. 2 is a schematic cross-sectional structure diagram of a backlight module according to an embodiment of the present invention, and fig. 3 is a schematic top-view structure diagram of the backlight module according to the embodiment of the present invention, as shown in fig. 2 and fig. 3, the backlight module includes: a circuit board 11 and a light source 12.
The circuit board 11 has a carrying function and is used for providing a driving signal.
The circuit board 11 has a bearing function and is used for providing a driving signal for the light source 12, in specific implementation, a pad and a circuit line are arranged on the circuit board 11, an electrode of the light source 12 can be welded on the pad of the circuit board 11 through a welding process, the circuit in the circuit board 11 electrically connects the light source 12, and the light source 12 is electrically connected with an external power supply driving board.
In some embodiments of the present invention, the Circuit Board 11 may be a Printed Circuit Board (PCB), where the PCB includes electronic circuits and an insulating layer, and the insulating layer exposes the solder pads of the electronic circuits, which are soldered to the light source 12, and covers the rest of the electronic circuits.
In some embodiments of the present invention, the circuit board 11 may also be a driving substrate formed by disposing a thin film transistor driving circuit on a substrate base, the surface of the driving substrate has a connection electrode connected to the thin film transistor driving circuit, and the electrodes of the light sources 12 are soldered to the connection electrodes in a one-to-one correspondence manner.
The substrate or substrate base of the circuit board 11 may be made of a flexible material to form a flexible display device.
In the embodiment of the present invention, the circuit board 11 may be a strip or a plate, and is designed according to a specific backlight module structure. In practical application, the backlight module can only comprise one circuit board or a plurality of circuit boards, and the splicing seams between the adjacent circuit boards are as small as possible, even seamless splicing is realized.
And the light source 12 is arranged on the circuit board 11. The light source 12 includes a first light source 12a and a second light source 12b, the first light source 12a and the second light source 12b are independently driven, and the color temperature of the first light source 12a is higher than the color temperature of the second light source 12 b.
The backlight module provided by the embodiment of the invention comprises the first light source 12a and the second light source 12b with different color temperatures, and the circuits of the first light source 12a and the second light source 12b are mutually independent, so that the brightness of the first light source 12a and the brightness of the second light source can be controlled independently. When the color temperature of the display device is higher, the brightness ratio of the second light source 12b in the backlight module can be increased, so that the color temperature is improved; when the color temperature of the display device is low, the brightness ratio of the first light source 12a in the backlight module can be increased, so that the color temperature is reduced. Therefore, the color temperature can be changed by directly adopting a backlight adjusting mode without changing the driving signals of the sub-pixels, and the brightness of the display device can not be lost.
In particular implementation, as shown in fig. 2 and 3, the light source 12 includes:
a light emitting chip 121 disposed on the circuit board 11 for emitting monochromatic light;
and the packaging structure 122 is located on a side of the light emitting chip 121 away from the circuit board 11, and is used for packaging and protecting the light emitting chip 121.
The package structure 122 disposed outside the light emitting chip 121 can play a role in packaging the light emitting chip 121, so that the light emitting material in the light emitting chip 121 is not corroded, and meanwhile, the package structure 122 can also protect the light emitting chip 121 from being damaged by external force, thereby prolonging the service life of the light emitting chip 121.
As shown in fig. 2 and 3, the light source of the embodiment of the invention is divided into a first light source 12a and a second light source 12b, the light emitting chips of the first light source 12a and the second light source 12b are the same, and both emit monochromatic light, and the first light source 12a and the second light source 12b have different structures. The package structure 122a of the first light source 12a is transparent and colorless; the package structure 122b of the second light source 12b is mixed with phosphor powder, the phosphor powder emits fluorescence under the excitation of the monochromatic light emitting chip, the wavelength of the emitted fluorescence is greater than that of the monochromatic light emitted by the light emitting chip, and the emitted light of the second light source carries a part of fluorescence, so that the color temperature of the second light source 12b is reduced.
In specific implementation, the light emitting chip 121 may be a blue light emitting chip, as shown in fig. 2, the backlight module may further include:
and the quantum dot film layer 13 is positioned on the light emitting side of the light source.
The quantum dot film layer 13 has red quantum dot material and green quantum dot material therein, the red quantum dot material emits red light under the excitation of blue light, and the green quantum dot material emits green light under the excitation of blue light, so that the backlight module can emit tricolor light. The quantum dot film layer is matched with the backlight scheme of the blue light source, so that quantum dot light with higher monochromaticity can be provided, and the display color gamut of the display device is improved.
The package structure 122a of the first light source 12a is transparent and colorless, and then the blue light emitted from the light emitting chip in the first light source 12a is still blue light after passing through the transparent and colorless package structure 122 a; the package structure 122b of the second light source 12b is mixed with phosphor, and the blue light emitted from the light emitting chip in the second light source 12b can excite the phosphor in the package structure 122b to generate yellow light, so that a part of the yellow light is mixed in the blue light emitted from the second light source 12 b.
FIG. 4 is a schematic diagram of an emission spectrum of a first light source, and FIG. 5 is a schematic diagram of an emission spectrum of a second light source; wherein the abscissa represents the wavelength and the ordinate represents the relative light intensity. As shown in fig. 4, the light emitted from the light emitting chip emitting blue light after passing through the package structure 122a is blue light, and as shown in fig. 5, a part of yellow light is carried in the light emitted from the light emitting chip emitting blue light after passing through the package structure 122 b.
Since the first light source 12a and the second light source 12b can be driven separately, the luminance ratio of the yellow light to the blue light in the final emergent light of the first light source 12a and the second light source 12b can be adjusted, and the luminance ratio of the yellow light to the blue light can directly influence the color temperature, so that the purpose of adjusting the color temperature can be achieved by adjusting the luminance of the first light source 12a and the second light source 12 b.
The backlight module provided by the embodiment of the invention adopts a light emitting scheme that blue light is matched with the quantum dot film layer, and provides primary color light with higher monochromaticity. The backlight module divides the blue light emitting chip into two parts, and the two parts are respectively matched with the two packaging structures, so that the first light source 12a emits blue light, and the emergent light of the second light source 12b carries yellow light, when the color temperature is high, the brightness proportion of the yellow light can be improved by adjusting the brightness of the first light source 12a and the second light source 12b, and the increase of the color temperature is restrained; when the color temperature is low, the brightness ratio of the blue light can be improved by adjusting the brightness of the first light source 12a and the second light source 12b, thereby achieving the purpose of improving the color temperature. Therefore, the color temperature of the display device can be adjusted on the premise of not sacrificing the color types, and the color temperature requirement of the display device is met.
In specific implementation, the light emitting chip 121 in the embodiment of the present invention may adopt a blue micro light emitting diode; the package structure 122 may be a package layer covering a surface of the blue micro led facing away from the circuit board 11.
The size of the blue micro light emitting diode in the embodiment of the invention is about 50-300 μm. The micro light emitting diode is different from a common light emitting diode, and is specifically referred to as a micro light emitting diode chip. The light emitting chip with smaller size is beneficial to controlling dynamic light emission to smaller partitions, and further improves the contrast of the picture.
The packaging layer covers the surface of the blue light micro light-emitting diode; the packaging layer on the surface of the blue light micro light-emitting diode in the first light source is transparent and colorless; the packaging layer on the surface of the blue light micro light-emitting diode in the second light source is doped with fluorescent powder.
The micro light emitting diode has a small size, and the packaging mode of the micro light emitting diode is different from that of the traditional light emitting diode. The structure of the packaging layer is arranged on the surface of the blue light micro light-emitting diode, so that the blue light micro light-emitting diode can be packaged and protected. In specific implementation, the encapsulation layer may be formed on the surface of the blue micro led by spraying or dispensing with a colloidal material such as silica gel.
The fluorescent powder is doped in the packaging layer on the surface of the blue light micro light-emitting diode of the second light source, so that yellow light can be carried in the final emergent light of the second light source, the aim of adjusting the proportion of the blue light and the yellow light can be achieved by adjusting the brightness of the first light source and the second light source, and the display color temperature can be adjusted.
In specific implementation, the YAG phosphor emitting yellow light may be used as the phosphor doped in the encapsulation layer, and the YAG phosphor may emit yellow light under excitation of blue light. Alternatively, a mixture of green phosphor and green phosphor may be used, the red phosphor may emit red light under excitation of blue light, the green phosphor may emit green light under excitation of blue light, and the red light and the green light may be mixed to generate yellow light. The purpose of adjusting the fluorescence wavelength can be achieved by adjusting the proportion of the red fluorescent powder and the green fluorescent powder.
The backlight module provided by the embodiment of the invention can be a side-in type backlight module and can also be a direct type backlight module.
Fig. 6 is a second schematic cross-sectional view of a backlight module according to an embodiment of the present invention, as shown in fig. 6, the backlight module may adopt a side-in type structure, and the backlight module further includes:
a light guide plate 14 for guiding light; the light source 12 is positioned at the light incident side of the light guide plate 14; the quantum dot film layer 13 is located on the light-emitting side of the light guide plate 14.
The light guide plate 14 is based on the total reflection property of light, and when the light emitted from the light source 12 is incident into the light guide plate at a predetermined angle, the light is totally reflected due to the high refractive index of the light guide plate, so that the light emitted from the light source can be transmitted from one side of the light guide plate to the other side of the light guide plate, and the light source is converted into a surface light source to provide backlight for the display panel.
The bottom surface of the light guide plate can be formed with light guide points by laser engraving, V-shaped cross grid engraving or UV screen printing technology. When the light rays irradiate each light guide point, the reflected light rays are diffused towards each angle, and when a part of the light rays irradiate the upper surface of the light guide plate, the total reflection condition is not met any more, so that the light rays can be emitted from the front surface of the light guide plate. Through setting up density, the leaded light point of variation in size can make the even light-emitting of light guide plate.
The light source 12 is disposed on the light incident side of the light guide plate 14, and the light source 12 emits light to the light incident surface of the light guide plate 14 at a set angle, so that the light incident into the light guide plate 14 can satisfy the total reflection condition. The quantum dot film layer 13 is disposed on the light emitting side of the light guide plate 14, and most of the light emitted from the light emitting surface of the light guide plate 14 is blue light, which can excite the quantum dot material in the quantum dot film layer 13 to generate tricolor light, and the tricolor light is mixed into white light to provide backlight for the display panel.
Fig. 7 is a schematic top view of the light bar shown in fig. 6, in an implementation manner, as shown in fig. 7, when the display device adopts a side-in structure, the circuit board 11 may be configured as a strip circuit board; the first light sources 12a and the second light sources 12b are alternately arranged in a row along the extending direction of the strip-shaped circuit board 11; correspondingly, the packaging layer comprises a plurality of dot-shaped packaging parts (122a and 122b), and the dot-shaped packaging parts (122a and 122b) correspond to the blue micro light-emitting diodes (121) one by one; orthographic projections of two adjacent point-shaped packaging parts on the circuit board are not overlapped.
The light bar positioned on the light incident side of the light guide plate 14 comprises a strip-shaped circuit board, and a first light source 12a and a second light source 12b which are positioned on the strip-shaped circuit board, wherein light emitting chips in the first light source 12a and the second light source 12b are both blue light micro light emitting diodes, a packaging layer 122a on the surface of the blue light micro light emitting diodes in the first light source 12a is colorless and transparent, and fluorescent powder is doped in a packaging layer 122b on the surface of the blue light micro light emitting diodes in the second light source 12 b. Therefore, the blue light emitted from the blue micro led in the first light source 12a passes through the encapsulation layer 122a on the surface thereof and then emits as blue light, and the blue light emitted from the blue micro led in the second light source 12b passes through the encapsulation layer 122b on the surface thereof and then emits as blue light, a part of which carries yellow light. In order to avoid that some areas of the light guide plate are blue or yellow due to the concentrated arrangement of the first light sources 12a and the second light sources 12b, the first light sources 12a and the second light sources 12b are alternately arranged, so that the light color of the light emitting surface of the light guide plate is uniform. Because the packaging layers on the surfaces of the blue light micro light-emitting diodes are different, the embodiment of the invention can adopt a dispensing packaging mode to respectively apply packaging glue with different components on the surfaces of the blue light micro light-emitting diodes, so that the emergent light of the blue light micro light-emitting diodes can meet the requirement after passing through the packaging layers. The packaging mode of point gluing can save packaging layer materials, and simultaneously, the adhesion between the packaging layers on the surfaces of the adjacent blue light micro light-emitting diodes is avoided.
Fig. 8 is a third schematic cross-sectional view of a backlight module according to an embodiment of the invention, and in another practical manner, as shown in fig. 8, two rows of light sources 12 may be further disposed on the light bar according to the embodiment of the invention.
Fig. 9 is a schematic top view of the light bar in fig. 8, and as shown in fig. 9, the circuit board 11 is a strip-shaped circuit board; the first light sources 12a and the second light sources 12b are respectively arranged in a row along the extending direction of the strip-shaped circuit board 11; accordingly, the encapsulation layer includes two strip-shaped encapsulation portions (122a and 122b), one strip-shaped encapsulation portion (122a) corresponds to a row of blue micro light emitting diodes of the first light source 12a, and the other strip-shaped encapsulation portion (122b) corresponds to a row of blue micro light emitting diodes of the second light source 12 b.
Because the size of the micro light-emitting diodes is smaller, two rows of blue light micro light-emitting diodes (121) can be arranged on the light bar side by side in the embodiment of the invention, thereby improving the brightness of the backlight module. In specific implementation, the first light sources 12a may be arranged in a row, and the second light sources 12b may be arranged in a row, so that a row of transparent and colorless encapsulation layers (122a) may be directly sprayed on the surface of a row of blue micro leds to encapsulate and protect the row of blue micro leds, and the encapsulated light emitting chips emit blue light; a row of packaging layers (122b) doped with fluorescent powder are sprayed on the surface of the other row of blue micro light-emitting diodes, so that the other row of blue micro light-emitting diodes can be packaged and protected, and a part of yellow light is carried in blue light emitted by the packaged light-emitting chips. The encapsulation method adopting spraying has higher production efficiency, and the encapsulation method is beneficial to improving the encapsulation efficiency by respectively arranging the first light source 12a and the second light source 12b in a row and matching with the encapsulation process of spraying.
As shown in fig. 3, when the backlight module may adopt a direct-type structure, the circuit board 11 may adopt a block circuit board; the first light sources 12a and the second light sources 12b are arranged on the block-shaped circuit board 11 in an array; the first light sources 12a and the second light sources 12b are alternately arranged in the row and column directions; correspondingly, the packaging layer comprises a plurality of dot-shaped packaging parts (122a and 122b), and the dot-shaped packaging parts (122a and 122b) correspond to the blue micro light-emitting diodes (121) one by one; orthographic projections of two adjacent point-shaped packaging parts on the circuit board are not overlapped.
The direct type backlight module can increase the using quantity of the micro light emitting diodes and improve the brightness of the backlight module. Meanwhile, the micro light emitting diode can be subjected to a fine partition matching area dimming technology, so that the contrast of the display device can be improved, and high dynamic display is realized. The backlight module provided by the embodiment of the invention also has the function of color temperature adjustment, so that the first light sources 12a and the second light sources 12b need to be uniformly distributed on the block-shaped circuit board, and the first light sources 12a and the second light sources 12b can be alternately arranged along the directions of rows and columns, thereby avoiding the problem that the backlight module emits light and polarizes light in certain areas. The light emitting chips 121 in the first light source 12a and the second light source 12b are blue micro light emitting diodes, the encapsulation layer 122a on the surface of the blue micro light emitting diode in the first light source 12a is colorless and transparent, and the encapsulation layer 122b on the surface of the blue micro light emitting diode in the second light source 12b is doped with phosphor, so that the blue light emitted by the blue micro light emitting diode in the first light source 12a passes through the encapsulation layer 122a on the surface thereof to emit light as blue light, and the blue light emitted by the blue micro light emitting diode in the second light source 12b passes through the encapsulation layer 122b on the surface thereof to emit light with a part of yellow light. Because the packaging layers on the surfaces of the blue light micro light-emitting diodes are different, the embodiment of the invention can adopt a dispensing packaging mode to respectively apply packaging glue with different components on the surfaces of the blue light micro light-emitting diodes, so that the emergent light of the blue light micro light-emitting diodes can meet the requirement after passing through the packaging layers. The packaging mode of point gluing can save packaging layer materials, and simultaneously, the adhesion between the packaging layers on the surfaces of the adjacent blue light micro light-emitting diodes is avoided.
Fig. 10 and 11 are schematic cross-sectional structures of a backlight module according to an embodiment of the present invention, where fig. 10 is a schematic cross-sectional structure of a direct type backlight module, fig. 11 is a schematic cross-sectional structure of a side type backlight module, and as shown in fig. 10 and 11, the backlight module according to an embodiment of the present invention further includes:
and the optical film 15 is positioned on the light emergent side of the light source 12 and is parallel to the quantum dot film layer 13.
The optical film 15 may optimize the light output of the micro light emitting diode, and may include one or more of a diffuser plate, a prism sheet reflective polarizer, and the like. The diffusion plate can further homogenize the light, and the outgoing uniformity of the light is improved. The prism sheet can change the emergent angle of light rays, thereby changing the viewable angle of the display device. The reflective polarizer can improve the utilization rate of light, and simultaneously, the emergent light has polarization property, thereby omitting the use of the polarizer under the liquid crystal display panel.
In another aspect of the embodiment of the present invention, there is further provided a color temperature adjusting method of any one of the display devices described above based on the embodiment of the present invention, and fig. 12 is a flowchart of the color temperature adjusting method provided in the embodiment of the present invention, as shown in fig. 12, the color temperature adjusting method may include:
s10, adjusting each pixel of the display device to the highest gray scale for displaying;
s20, determining the relation between the current color temperature of the display device and the preset standard color temperature value; if the current color temperature of the display device is higher than the preset standard color temperature value, executing step S30; if the current color temperature of the display device is lower than the preset standard color temperature value, executing step S40;
s30, increasing the brightness of the second light source and/or decreasing the brightness of the first light source;
s40, increasing the brightness of the first light source and/or decreasing the brightness of the second light source.
According to the embodiment of the invention, the light source in the backlight module is divided into two parts, the color temperature of the first light source is higher than that of the second light source, and the first light source and the second light source can be driven independently.
In specific implementation, the display panel may be adjusted to the highest gray scale for displaying, for example, the red sub-pixel, the green sub-pixel and the blue sub-pixel all adopt 255 gray scales for displaying, and the color temperature of the display device in this state is the initial color temperature, and it is desirable that the initial color temperature of the display device is the preset standard color temperature value in the implementation process, but the initial color temperature is difficult to be maintained at the preset standard color temperature value due to the difference between the manufacturing process and the materials, so the purpose of adjusting the color temperature may be achieved by adjusting the brightness of the first light source and the second light source in the embodiment of the present invention. When the color temperature of the image with the highest gray scale displayed by the display device is larger than the preset standard color temperature value, the brightness of the light source with higher color temperature needs to be reduced, so that the brightness of the second light source can be increased and/or the brightness of the first light source can be reduced, the brightness ratio of the emergent light of the second light source is increased, and the color temperature is reduced. When the color temperature of the image with the highest gray scale displayed by the display device is smaller than the preset standard color temperature value, the brightness of the light source with higher color temperature needs to be improved, so that the brightness of the first light source can be increased and/or the brightness of the second light source can be reduced, the brightness proportion of emergent light of the first light source is increased, and the color temperature is improved.
The color temperature adjusting method provided by the embodiment of the invention can realize the color temperature matching of the backlight module and the display panel, meets the color temperature requirement of the display device, and ensures that the gray scale of the display panel is not required to be adjusted or is slightly adjusted, thereby avoiding the reduction of energy efficiency and the reduction of the types of display colors caused by the traditional color temperature adjusting method, and also increasing the matching tolerance range of the backlight module and the display panel.
The embodiment of the invention provides a display device and a color temperature adjusting method thereof, wherein the display device comprises: the backlight module is used for providing backlight; the display panel is positioned on the light emitting side of the backlight module and used for displaying images; the backlight module includes: the circuit board has a bearing function and is used for providing a driving signal; the light source is arranged on the circuit board; the light source comprises a first light source and a second light source, the first light source and the second light source are driven independently, and the color temperature of the first light source is larger than that of the second light source. The first light source and the second light source with different color temperatures are arranged in the backlight module, and the two light sources can be independently driven, so that the brightness ratio of the second light source can be increased when the color temperature is higher, and the purpose of reducing the color temperature is achieved; when the color temperature is lower, the brightness proportion of the first light source is increased, so that the purpose of improving the color temperature is achieved. Therefore, the color temperature of the display device can be adjusted on the premise of not sacrificing the color types, and the color temperature requirement of the display device is met.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display device, comprising:
the backlight module is used for providing backlight;
the display panel is positioned on the light emitting side of the backlight module and used for displaying images;
the backlight module includes:
the circuit board has a bearing function and is used for providing a driving signal;
the light source is arranged on the circuit board;
the light source comprises a first light source and a second light source, and the first light source and the second light source are independently driven; the color temperature of the first light source is greater than the color temperature of the second light source.
2. The display device of claim 1, wherein the light source comprises:
the light emitting chip is arranged on the circuit board and used for emitting monochromatic light;
the packaging structure is positioned on one side of the light-emitting chip, which is far away from the circuit board, and is used for packaging and protecting the light-emitting chip;
the packaging structure of the first light source is transparent and colorless, and fluorescent powder is mixed in the packaging structure of the second light source;
the backlight module further comprises:
and the quantum dot film layer is positioned on the light emergent side of the light source.
3. The display device of claim 2, wherein the light emitting chip is a blue micro light emitting diode; the packaging structure is a packaging layer, and the packaging layer covers the surface of one side, away from the circuit board, of the blue light micro light-emitting diode;
the packaging layer on the surface of the blue light micro light-emitting diode in the first light source is transparent and colorless;
and fluorescent powder is doped in the packaging layer on the surface of the blue light micro light-emitting diode in the second light source.
4. The display device according to claim 3, wherein the phosphor is a yellow phosphor; or the fluorescent powder is a mixture of red fluorescent powder and green fluorescent powder.
5. The display device of claim 3, wherein the blue micro light emitting diode has a size of 50 μm to 300 μm.
6. The display device of claim 3, wherein the backlight module further comprises:
a light guide plate for guiding light;
the light source is positioned at the light incident side of the light guide plate; the quantum dot film layer is located on the light emitting side of the light guide plate.
7. The display device according to claim 6, wherein the circuit board is a strip-shaped circuit board; the first light sources and the second light sources are alternately arranged in a row along the extending direction of the strip-shaped circuit board;
the packaging layer comprises a plurality of point-shaped packaging parts, and the point-shaped packaging parts correspond to the blue light micro light-emitting diodes one by one; orthographic projections of two adjacent dot-shaped packaging parts on the circuit board are not overlapped.
8. The display device according to claim 6, wherein the circuit board is a strip-shaped circuit board; the first light sources and the second light sources are respectively arranged in a row along the extending direction of the strip-shaped circuit board;
the packaging layer comprises two strip-shaped packaging parts, one strip-shaped packaging part corresponds to a row of blue light micro light-emitting diodes of the first light source, and the other strip-shaped packaging part corresponds to a row of blue light micro light-emitting diodes of the second light source.
9. The display device according to claim 3, wherein the circuit board is a block-shaped circuit board; the first light sources and the second light sources are arranged on the blocky circuit board in an array; the first light sources and the second light sources are alternately arranged in the directions of rows and columns;
the packaging layer comprises a plurality of point-shaped packaging parts, and the point-shaped packaging parts correspond to the blue light micro light-emitting diodes one by one; orthographic projections of two adjacent dot-shaped packaging parts on the circuit board are not overlapped.
10. A color temperature adjustment method for a display device according to any one of claims 1 to 9, comprising:
adjusting each pixel of the display device to the highest gray scale for displaying;
if the current color temperature of the display device is higher than a preset standard color temperature value, increasing the brightness of the second light source and/or reducing the brightness of the first light source;
and if the current color temperature of the display device is lower than the preset standard color temperature value, increasing the brightness of the first light source and/or reducing the brightness of the second light source.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114967231A (en) * | 2022-05-16 | 2022-08-30 | 高创(苏州)电子有限公司 | Light emitting assembly, backlight module, driving method of backlight module and display device |
| CN114994983A (en) * | 2022-06-16 | 2022-09-02 | 惠科股份有限公司 | Backlight module and display panel |
| CN115704974A (en) * | 2021-08-05 | 2023-02-17 | 海信视像科技股份有限公司 | Display device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080315217A1 (en) * | 2005-12-14 | 2008-12-25 | Koninklijke Philips Electronics, N.V. | Semiconductor Light Source and Method of Producing Light of a Desired Color Point |
| US20090002604A1 (en) * | 2007-05-14 | 2009-01-01 | Sharp Kabushiki Kaisha | Light emitting apparatus, lighting device and liquid crystal display apparatus |
| CN101344234A (en) * | 2008-08-22 | 2009-01-14 | 友达光电股份有限公司 | Display equipment and its adjustable illuminating module |
| WO2010061913A1 (en) * | 2008-11-27 | 2010-06-03 | 京セラ株式会社 | Illumination device |
| KR20100116162A (en) * | 2010-10-14 | 2010-10-29 | 서울반도체 주식회사 | Illumination apparatus for emitting white light |
| CN202647383U (en) * | 2012-01-19 | 2013-01-02 | 苏州东山精密制造股份有限公司 | LED light source and backlight module group thereof and liquid crystal display screen |
| US20130120688A1 (en) * | 2011-11-14 | 2013-05-16 | Planck Co., Ltd. | Color regulating device for illumination and apparatus using the same, and method of regulating color |
| CN104456207A (en) * | 2014-12-02 | 2015-03-25 | 京东方科技集团股份有限公司 | Light source, backlight module and display device |
| CN105700240A (en) * | 2016-04-27 | 2016-06-22 | 京东方科技集团股份有限公司 | Backlight module, backlight color temperature adjusting method, and display device |
| CN108181763A (en) * | 2017-12-29 | 2018-06-19 | 西安智盛锐芯半导体科技有限公司 | Backlight module and liquid crystal display device |
| CN109739053A (en) * | 2019-02-28 | 2019-05-10 | 青岛海信电器股份有限公司 | A kind of backlight module and display device |
| CN209086609U (en) * | 2018-10-26 | 2019-07-09 | 深圳Tcl新技术有限公司 | A kind of LCD backlight mould group |
-
2020
- 2020-01-13 CN CN202010031934.7A patent/CN113109968A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080315217A1 (en) * | 2005-12-14 | 2008-12-25 | Koninklijke Philips Electronics, N.V. | Semiconductor Light Source and Method of Producing Light of a Desired Color Point |
| US20090002604A1 (en) * | 2007-05-14 | 2009-01-01 | Sharp Kabushiki Kaisha | Light emitting apparatus, lighting device and liquid crystal display apparatus |
| CN101344234A (en) * | 2008-08-22 | 2009-01-14 | 友达光电股份有限公司 | Display equipment and its adjustable illuminating module |
| WO2010061913A1 (en) * | 2008-11-27 | 2010-06-03 | 京セラ株式会社 | Illumination device |
| KR20100116162A (en) * | 2010-10-14 | 2010-10-29 | 서울반도체 주식회사 | Illumination apparatus for emitting white light |
| US20130120688A1 (en) * | 2011-11-14 | 2013-05-16 | Planck Co., Ltd. | Color regulating device for illumination and apparatus using the same, and method of regulating color |
| CN202647383U (en) * | 2012-01-19 | 2013-01-02 | 苏州东山精密制造股份有限公司 | LED light source and backlight module group thereof and liquid crystal display screen |
| CN104456207A (en) * | 2014-12-02 | 2015-03-25 | 京东方科技集团股份有限公司 | Light source, backlight module and display device |
| CN105700240A (en) * | 2016-04-27 | 2016-06-22 | 京东方科技集团股份有限公司 | Backlight module, backlight color temperature adjusting method, and display device |
| CN108181763A (en) * | 2017-12-29 | 2018-06-19 | 西安智盛锐芯半导体科技有限公司 | Backlight module and liquid crystal display device |
| CN209086609U (en) * | 2018-10-26 | 2019-07-09 | 深圳Tcl新技术有限公司 | A kind of LCD backlight mould group |
| CN109739053A (en) * | 2019-02-28 | 2019-05-10 | 青岛海信电器股份有限公司 | A kind of backlight module and display device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115704974A (en) * | 2021-08-05 | 2023-02-17 | 海信视像科技股份有限公司 | Display device |
| CN115704974B (en) * | 2021-08-05 | 2024-04-02 | 海信视像科技股份有限公司 | Display device |
| CN114967231A (en) * | 2022-05-16 | 2022-08-30 | 高创(苏州)电子有限公司 | Light emitting assembly, backlight module, driving method of backlight module and display device |
| CN114994983A (en) * | 2022-06-16 | 2022-09-02 | 惠科股份有限公司 | Backlight module and display panel |
| CN114994983B (en) * | 2022-06-16 | 2023-09-19 | 惠科股份有限公司 | Backlight module and display panel |
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Application publication date: 20210713 |