CN108897169B - Light-emitting module, control method thereof and display device - Google Patents
Light-emitting module, control method thereof and display device Download PDFInfo
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- CN108897169B CN108897169B CN201810823725.9A CN201810823725A CN108897169B CN 108897169 B CN108897169 B CN 108897169B CN 201810823725 A CN201810823725 A CN 201810823725A CN 108897169 B CN108897169 B CN 108897169B
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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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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Abstract
The application discloses a light-emitting module, a control method thereof and a display device, and belongs to the technical field of display. The light emitting module includes: the device comprises a control unit and a substrate divided into n subareas, wherein n is more than or equal to 1, and each subarea of the n subareas is provided with: the light-emitting device comprises a first light-emitting unit and a second light-emitting unit, wherein the light-emitting angle of the first light-emitting unit is smaller than that of the second light-emitting unit; the control unit is used for: when each subarea does not meet the preset condition, controlling a first light-emitting unit on each subarea to emit light and forbidding to control a second light-emitting unit on each subarea to emit light in a peep-proof display mode; and in the non-peep-proof display mode, controlling the second light-emitting unit on each partition to emit light. The application solves the problem that the display flexibility of the display device is low. The application is used for light emission.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a light emitting module, a control method thereof, and a display device.
Background
With the development of display technology, the applications of display devices such as mobile phones and computers are becoming wider and wider, and the current display devices have a larger viewing angle. When the user uses the display device, the information displayed on the display device is visible to other people, so that the leakage risk of the user information is high.
In order to reduce the risk of information leakage of users, a peep-proof display technology is proposed, that is, by reducing the viewing angle of the display device, information displayed by the display device can be seen only by a user facing the screen of the display device. For example, a privacy film may be disposed in the display device to absorb a portion of light emitted from a light emitting module (e.g., a backlight module in a liquid crystal display device) of the display device, so as to reduce the viewing angle of the display device.
However, the display device provided with the privacy film has a small viewing angle, and is limited when a user wants to share information displayed by the display device (for example, a plurality of people watch video together), so that the display device has low display flexibility.
Disclosure of Invention
The application provides a light-emitting module, a control method thereof and a display device, which can solve the problem of low display flexibility of the display device. The technical scheme is as follows:
in a first aspect, a lighting module is provided, which includes: a control unit and a substrate divided into n zones, n is more than or equal to 1,
each partition of the n partitions is provided with: the light-emitting device comprises a first light-emitting unit and a second light-emitting unit, wherein the light-emitting angle of the first light-emitting unit is smaller than that of the second light-emitting unit;
the control unit is used for: in a display stage, judging whether each partition in the n partitions meets a preset condition, wherein the preset condition comprises that: the corresponding pixels of each subarea in the image to be displayed only comprise black pixels; when the preset condition of each partition is not met, controlling the first light-emitting unit on each partition to emit light and forbidding to control the second light-emitting unit on each partition to emit light in a peep-proof display mode; and in a non-peep-proof display mode, controlling the second light-emitting unit on each partition to emit light.
Optionally, the control unit is further configured to: and when each subarea meets the preset condition, prohibiting controlling each light-emitting unit on each subarea to emit light.
Optionally, each of the first light-emitting units and each of the second light-emitting units are mini light-emitting diodes.
Optionally, the first light emitting unit is a high-directional light emitting diode, and the second light emitting unit is a scattering light emitting diode.
Optionally, each partition is provided with: a plurality of first light emitting units and a plurality of second light emitting units,
the first light-emitting units are arranged in a first ring shape, and the second light-emitting units are arranged in a second ring shape;
the plurality of first rings and the plurality of second rings are concentric rings, and the plurality of first rings are spaced from the plurality of second rings one by one.
Optionally, each partition is provided with: the light emitting module comprises a plurality of light emitting modules arranged in an array, wherein each light emitting module comprises a first light emitting unit and a second light emitting unit.
In a second aspect, a method for controlling a light emitting module is provided, where the method is used for a control unit in the light emitting module, and the light emitting module further includes: the substrate is divided into n subareas, n is more than or equal to 1, and each subarea of the n subareas is provided with: a first light emitting unit and a second light emitting unit, and a light emitting angle of the first light emitting unit is smaller than a light emitting angle of the second light emitting unit, the method comprising:
in a display stage, judging whether each partition in the n partitions meets a preset condition, wherein the preset condition comprises that: the corresponding pixels of each subarea in the image to be displayed only comprise black pixels;
when the preset condition of each partition is not met, controlling the first light-emitting unit on each partition to emit light and forbidding to control the second light-emitting unit on each partition to emit light in a peep-proof display mode; and in a non-peep-proof display mode, controlling the second light-emitting unit on each partition to emit light.
In a third aspect, a light emitting module is provided, which includes: control unit and base plate, be provided with on the base plate: the light-emitting device comprises a first light-emitting unit and a second light-emitting unit, wherein the light-emitting angle of the first light-emitting unit is smaller than that of the second light-emitting unit;
the control unit is used for: in a peep-proof display mode, controlling the first light-emitting unit to emit light, and forbidding controlling the second light-emitting unit to emit light; and in the non-peep-proof display mode, controlling the second light-emitting unit to emit light.
In a fourth aspect, a method for controlling a light emitting module is provided, where the method is used for a control unit in the light emitting module, the light emitting module further includes a substrate, and the substrate is provided with: the light-emitting device comprises a first light-emitting unit and a second light-emitting unit, wherein the light-emitting angle of the first light-emitting unit is smaller than that of the second light-emitting unit; the method comprises the following steps:
in a peep-proof display mode, controlling the first light-emitting unit to emit light, and forbidding controlling the second light-emitting unit to emit light;
and in the non-peep-proof display mode, controlling the second light-emitting unit to emit light.
In a fifth aspect, a display device is provided, which includes the above light emitting module.
The beneficial effect that technical scheme that this application provided brought includes at least:
the application provides a light-emitting module, a control method thereof and a display device. In the peep-proof display mode, the control unit can control the first light-emitting unit on the subarea to emit light and forbid to control the second light-emitting unit to emit light, so that the visual angle of the display device where the light-emitting module is positioned is smaller; under the non-peep-proof display mode, the control unit can control the second light-emitting units on the subareas to emit light, so that the visual angle of the display device where the light-emitting module is located is larger, and the display flexibility of the display device where the light-emitting module is located is higher.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a light emitting module according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a light emitting unit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another light emitting module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a method for controlling a light emitting module according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another light emitting module according to an embodiment of the invention;
fig. 8 is a flowchart of another control method of a light emitting module according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
With the development of display technology, a lot of information of a user is stored in display devices such as mobile phones and computers, and when the user watches the information, the information is ensured not to be seen by other people, namely, the display device is made to be important in peep-proof display. A layer of peep-proof film is usually disposed in the display device for absorbing a portion of light emitted from the light-emitting module of the display device, thereby reducing the viewing angle of the display device. However, such a display device can only display peep-proof, and there is a limitation when a user wants to share information displayed by the display device (for example, a plurality of people watch a video together). The display device where the light-emitting module is located provided by the embodiment of the invention can realize switching between peep-proof display and non-peep-proof display, namely, information displayed by the display device can be only watched by a user just facing a screen, and can also be shared by more users for watching, so that the display flexibility of the display device is improved.
Fig. 1 is a schematic structural diagram of a light emitting module according to an embodiment of the present invention. As shown in fig. 1, the light emitting module 10 may include: a control unit (not shown in FIG. 1), and a substrate 100 divided into n sections A, n ≧ 1. Each subarea A of the n subareas A is provided with: the lighting device comprises a first lighting unit 101 and a second lighting unit 102, and the lighting angle of the first lighting unit 101 is smaller than that of the second lighting unit 102.
The control unit may be adapted to: in the display stage, it is determined whether each of the n partitions a of the substrate 100 satisfies a preset condition, where the preset condition may include: the corresponding pixels of each subarea in the image to be displayed only comprise black pixels; when each partition does not meet the preset condition, in the peep-proof display mode, controlling the first light-emitting unit 101 on each partition to emit light, and forbidding controlling the second light-emitting unit 102 on each partition to emit light; in the non-peep-proof display mode, the second light-emitting unit 102 on each partition is controlled to emit light. Alternatively, the control unit may prohibit control of each light emitting unit on each partition to emit light when the preset condition is satisfied by the partition.
Optionally, a selection module may be disposed in the display device where the light emitting module is located, and a user may operate the selection module (for example, click a selection button corresponding to the selection module displayed by the display device) to select a display mode of the display device. When the control unit in the light-emitting module controls the light-emitting unit, the display mode of the display device selected by a user can be acquired firstly, and whether the display mode is the peep-proof display mode or not is judged.
It should be noted that the Light Emitting module provided in the embodiments of the present invention can be used as a backlight module in a liquid crystal Display device, and can also be used as an OLED panel in an Organic Light Emitting Diode (OLED) Display device. In the embodiment of the present invention, for example, when the light emitting module is used in a liquid crystal display device, n partitions in the light emitting module may correspond to n regions in a display panel of the display device one by one, and the light emitting unit disposed on each partition may be configured to provide backlight for the region corresponding to the partition in the display panel, so that the region in the display panel may display an image. The n partitions may correspond one-to-one with the n regions in the image. The above-mentioned "the corresponding pixels of the partition in the image only include black pixels", that is: the color of the pixel in the area corresponding to the partition in the image is black. In fig. 1, only n-32 is taken as an example, and each light-emitting unit is rectangular, optionally, n may also be another value, for example, n-1 or n-36, and the shape of each light-emitting unit may also be circular or elliptical, which is not limited in this embodiment of the present invention.
In the display stage, the control unit needs to control the light-emitting unit in the light-emitting module to emit light according to a preset condition. For example, taking one partition a1 in the substrate as an example, the control unit may determine whether the colors of the pixels corresponding to the partition a1 in the image to be displayed are all black. If so, the control unit may inhibit each light-emitting unit on the partition a1 from being controlled to emit light so that the area corresponding to the partition a1 in the display panel does not display an image, which is equivalent to displaying a black image. If not, the control unit can judge whether the current display mode is the peep-proof mode or the non-peep-proof mode; if the current display mode is the peep-proof mode, the control unit can control the first light-emitting unit on the partition A1 to emit light and forbid the control of the second light-emitting unit on the partition A1 to emit light, so that the visual angle of the display device is smaller; if the current display mode is the non-peep-proof mode, the control unit may control the second light-emitting units on the partition a1 to emit light, so that the viewing angle of the display device is larger.
For example, the control unit may prohibit controlling the first light-emitting unit to emit light when controlling the second light-emitting unit on the partition a1 to emit light, so as to reduce the power consumption of the light-emitting module; alternatively, the first light-emitting unit on the partition a1 may be controlled to emit light as well, so that the light intensity emitted by the light-emitting module is higher.
In the related art, even if the display device needs to display a black image, all the light emitting units in the light emitting module in the display device need to emit light, so that the black image displayed by the display device also has a certain brightness, and the contrast of the image displayed by the display device is low.
In the embodiment of the present invention, when the pixel corresponding to a partition in the image to be displayed only includes a black pixel, the light emitting unit disposed on the partition may not emit light, that is, local dimming may be implemented. Thus, the display device can display an image with lower brightness, the contrast of the image displayed by the display device is improved, and the brightness range which can be displayed by the display device is enlarged. Optionally, the display device where the light emitting module provided in the embodiment of the present invention is located may further include a liquid crystal display panel, which is used to match with the light emitting module so that the display device normally displays images.
Optionally, if a plurality of first light emitting units and a plurality of second light emitting units are disposed on the partition in the substrate, the plurality of first light emitting units on the partition may all be connected in series, and the plurality of second light emitting units on the partition may also all be connected in series. The control unit may be connected to one of the plurality of first light emitting units to simultaneously control the plurality of first light emitting units; the control unit may be further connected to one of the plurality of second light emitting units to simultaneously control the plurality of second light emitting units.
In summary, in the light emitting module provided in the embodiments of the present invention, each partition of the substrate is provided with the first light emitting unit and the second light emitting unit, and the light emitting angle of the first light emitting unit is smaller than the light emitting angle of the second light emitting unit. In the peep-proof display mode, the control unit can control the first light-emitting unit on the subarea to emit light and forbid to control the second light-emitting unit to emit light, so that the visual angle of the display device where the light-emitting module is positioned is smaller; under the non-peep-proof display mode, the control unit can control the second light-emitting units on the subareas to emit light, so that the visual angle of the display device where the light-emitting module is located is larger, and the display flexibility of the display device where the light-emitting module is located is higher.
Optionally, the first Light Emitting unit and the second Light Emitting unit may be mini Light Emitting diodes (mini LEDs), and the size range of the mini LEDs may be 100 micrometers to 150 micrometers. Optionally, the first Light Emitting unit and the second Light Emitting unit may also be micro Light Emitting diodes (micro LEDs), and the size of the micro LEDs may be 10 micrometers.
Optionally, referring to fig. 2, the first light emitting unit 101 may be a high-directional light emitting diode, and the light emitting angle α may range from 5 degrees to 20 degrees; the second light emitting unit 102 may be a scattering type light emitting diode, and the light emitting angle β thereof may range from 45 degrees to 90 degrees.
The arrangement of the first light-emitting unit and the second light-emitting unit on each partition can be realized in various manners, and two of the realizations are exemplified below:
in a first implementation manner, please continue to refer to fig. 1, each partition a may have: a plurality of first light emitting units 101 and a plurality of second light emitting units 102. The plurality of first light emitting units 101 may enclose a plurality of first rings H1 with different sizes, the plurality of second light emitting units 102 may enclose a plurality of second rings H2 with different sizes, the plurality of first rings H1 and the plurality of second rings H2 may be concentric rings, and the plurality of first rings H1 may be spaced from the plurality of second rings H2 one by one.
In a second implementation manner, referring to fig. 3, each partition a may have: a plurality of light emitting modules a arranged in an array, each of which may include one first light emitting unit 101 and one second light emitting unit 102. In the embodiment of the present invention, only the second light emitting unit 102 in each light emitting module a is disposed on the right side of the first light emitting unit 101 as an example, optionally, the second light emitting unit 102 in each light emitting module a may also be disposed on the left side, the upper side, or the lower side of the first light emitting unit 101; or, the arrangement of the light emitting units in the light emitting modules in adjacent rows may be opposite, which is not limited in the embodiment of the present invention.
In the related art, there are various realizable manners for the peep-proof display of the display device, and three realizable manners are exemplified as follows:
in a first implementation, a privacy film, which may be a Polymer Dispersed Liquid Crystal (PDLC) film, may be provided in the display device. When voltage is applied to the peep-proof film, the optical axis of the liquid crystal particles in the peep-proof film can be perpendicular to the display panel of the display device, so that light emitted by the light-emitting module can be scattered less, the visual angle of the display device is smaller, and peep-proof display of the display device is realized. If no voltage is applied to the peep-proof film, the optical axes of the liquid crystal particles in the peep-proof film are randomly oriented, and light emitted by the light-emitting module can be strongly scattered when passing through the peep-proof film, so that the visual angle of the display device is larger, and non-peep-proof display of the display device is realized. The peep-proof film is high in production cost, and a circuit for applying voltage to the peep-proof film is required to be arranged on the peep-proof film, so that the display device is high in manufacturing difficulty and high in reject ratio; in addition, because the light emitted by the light-emitting module passes through the peep-proof film and then is greatly attenuated, the light-emitting module in the display device needs to emit light with higher brightness, and the loss of the light-emitting module is higher.
In a second implementation, the display device can be used in combination with the peep-proof glasses, so that the user can only view the information displayed on the display device by wearing the corresponding peep-proof glasses of the display device. The display device is required to be combined with the peep-proof glasses for use, and a user needs to carry the peep-proof glasses at any time, so that the use convenience of the display device is poor.
In a third implementation manner, referring to fig. 4 and fig. 5, the display device may include a Light bar 301, a Light bar 302, a chamfered mirror 303, two Light Guide Plates (LGP) 304, a Light Guide Plate 305, a reflective sheet 306, a diffusion film 307, and a display panel 308, wherein the Light Guide plates 304 may be matched with the chamfered mirror 303. It should be noted that the light rays may become more convergent after passing through the light guide plate matched with the chamfered prism. For example, as shown in fig. 4, when the light bar 301 is turned on, the light ray G1 emitted by the display device is more convergent, and the viewing angle of the display device is smaller, so that the peep-proof display can be realized; as shown in fig. 5, when the light bar 302 is turned on, the light G2 emitted from the display device is relatively divergent, and the display device has a relatively large viewing angle, so that non-peep-proof display can be achieved. The display device is provided with the two lamp strips and the two light guide plates, and the thickness of the light guide plates is larger, so that the display device is thicker and heavier, is complex to assemble, and cannot comply with the trend that the display device is thinner and thinner.
The display device provided by the embodiment of the invention does not need to be provided with the peep-proof film, so that the luminous brightness of the luminous module does not need to be overlarge, and the loss of the luminous module is small. The display device where the light-emitting module is located can display in a peep-proof manner without matching with peep-proof glasses, and the display device is high in use convenience. The display device where the light-emitting module is located does not need to be provided with more light guide plates, the size of a light-emitting unit in the light-emitting module is smaller, and the display device can be thinner and thinner. The display device where the light-emitting module is located can conveniently control the display device to carry out peep-proof display or non-peep-proof display through the control of the first light-emitting unit and the second light-emitting unit in the light-emitting module through the control unit, and the display device is high in display flexibility.
In summary, in the light emitting module provided in the embodiments of the present invention, each partition of the substrate is provided with the first light emitting unit and the second light emitting unit, and the light emitting angle of the first light emitting unit is smaller than the light emitting angle of the second light emitting unit. In the peep-proof display mode, the control unit can control the first light-emitting unit on the subarea to emit light and forbid to control the second light-emitting unit to emit light, so that the visual angle of the display device where the light-emitting module is positioned is smaller; under the non-peep-proof display mode, the control unit can control the second light-emitting units on the subareas to emit light, so that the visual angle of the display device where the light-emitting module is located is larger, and the display flexibility of the display device where the light-emitting module is located is higher.
Fig. 6 is a flowchart of a method for controlling a light emitting module according to an embodiment of the present invention. The method may be applied to a control unit in the light emitting module shown in fig. 1 or 3 to control the light emitting module shown in fig. 1 or 3. As shown in fig. 6, the method may include:
For example, the preset condition may include: the corresponding pixels of each partition in the image to be displayed include only black pixels. The display panel in the display device in which the light emitting module is located may include n regions in one-to-one correspondence with the n partitions. If a black image needs to be displayed in an area corresponding to a certain partition in the display panel, and pixels of the partition corresponding to the image to be displayed only include black pixels, the control unit may determine that the partition meets a preset condition; otherwise, the control unit may determine that the partition does not satisfy the preset condition.
For example, when determining that a certain partition satisfies the preset condition, the control unit may prohibit controlling each light-emitting unit on the partition to emit light, so that the area corresponding to the partition in the display panel does not display an image, which is equivalent to displaying a black image.
For example, a selection module may be disposed in the display device where the light emitting module is located, and a user may operate the selection module (for example, click a selection button corresponding to the selection module displayed by the display device) to select a display mode of the display device. When the control unit in the light-emitting module controls the light-emitting unit, the display mode of the display device selected by a user can be acquired firstly, and whether the display mode is the peep-proof display mode or not is judged.
When the display mode of the display device is the peep-proof display mode, the control unit can control the first light-emitting unit with the smaller light-emitting angle on the partition to emit light and forbid the control of the second light-emitting unit with the larger light-emitting angle to emit light, so that the light emitted by the display device is converged, the visible angle of the display device is smaller, and the peep-proof display of the display device is realized.
Step 605, controlling the second light emitting unit on each partition to emit light.
When display device's display mode is the peep-proof display mode, the great second luminescence unit of luminous angle is luminous on the control unit can control the subregion to the light that makes display device send comparatively diverges, and then makes display device's visual angle great, realizes display device's peep-proof and shows.
In summary, in the control method of the light emitting module provided in the embodiments of the present invention, each partition of the light emitting module substrate is provided with the first light emitting unit and the second light emitting unit, and the light emitting angle of the first light emitting unit is smaller than the light emitting angle of the second light emitting unit. In the peep-proof display mode, the control unit can control the first light-emitting unit on the subarea to emit light and forbid to control the second light-emitting unit to emit light, so that the visual angle of the display device where the light-emitting module is positioned is smaller; under the non-peep-proof display mode, the control unit can control the second light-emitting units on the subareas to emit light, so that the visual angle of the display device where the light-emitting module is located is larger, and the display flexibility of the display device where the light-emitting module is located is higher.
Fig. 7 is a schematic structural diagram of another light emitting module according to an embodiment of the invention. As shown in fig. 7, the light emitting module 70 may include: a control unit (not shown in fig. 7) and a substrate 700, the substrate 700 having disposed thereon: the light emitting device comprises a first light emitting unit 701 and a second light emitting unit 702, and the light emitting angle of the first light emitting unit 701 is smaller than that of the second light emitting unit 702.
The control unit is used for: in the peep-proof display mode, the first light-emitting unit 701 is controlled to emit light, and the second light-emitting unit 702 is prohibited to emit light; in the non-peep-proof display mode, the second light emitting unit 702 is controlled to emit light.
It should be noted that, the display device where the light emitting module according to the embodiment of the present invention is located may further include a liquid crystal display panel, and in the peep-proof display mode, even if the color of each position in the image to be displayed is black, the first light emitting units in the light emitting module may all emit light, and the display device may display a black image by adjusting the deflection of the liquid crystal in the liquid crystal display panel. In the embodiments of the present invention, materials, characteristics, and arrangement of the light emitting units can refer to the light emitting units on each partition in the light emitting module shown in fig. 1 or fig. 3, which are not described herein again.
In summary, in the light emitting module provided in the embodiments of the present invention, each partition of the substrate is provided with the first light emitting unit and the second light emitting unit, and the light emitting angle of the first light emitting unit is smaller than the light emitting angle of the second light emitting unit. In the peep-proof display mode, the control unit can control the first light-emitting unit on the subarea to emit light and forbid to control the second light-emitting unit to emit light, so that the visual angle of the display device where the light-emitting module is positioned is smaller; under the non-peep-proof display mode, the control unit can control the second light-emitting units on the subareas to emit light, so that the visual angle of the display device where the light-emitting module is located is larger, and the display flexibility of the display device where the light-emitting module is located is higher.
Fig. 8 is a flowchart of another control method of a light emitting module according to an embodiment of the present invention. The method can be used in the control unit of the lighting module shown in fig. 7 to control the lighting module shown in fig. 7. As shown in fig. 8, the method may include:
It should be noted that step 801 may refer to step 603, and details of the embodiment of the present invention are not described herein.
And step 802, controlling the first light-emitting unit on each subarea to emit light, and forbidding to control the second light-emitting unit on each subarea to emit light.
It should be noted that step 802 may refer to step 604, and details of the embodiment of the present invention are not described herein.
It should be noted that step 803 may refer to step 605, and details of the embodiment of the present invention are not described herein.
In summary, in the control method of the light emitting module provided in the embodiments of the present invention, each partition of the substrate is provided with the first light emitting unit and the second light emitting unit, and the light emitting angle of the first light emitting unit is smaller than the light emitting angle of the second light emitting unit. In the peep-proof display mode, the control unit can control the first light-emitting unit on the subarea to emit light and forbid to control the second light-emitting unit to emit light, so that the visual angle of the display device where the light-emitting module is positioned is smaller; under the non-peep-proof display mode, the control unit can control the second light-emitting units on the subareas to emit light, so that the visual angle of the display device where the light-emitting module is located is larger, and the display flexibility of the display device where the light-emitting module is located is higher.
The embodiment of the invention also provides a display device, which can comprise the light-emitting module shown in fig. 1, fig. 3 or fig. 7. Illustratively, the display device may be a liquid crystal display device or an OLED display device. If the display device is a liquid crystal display device, the display device can further comprise a diffusion plate and a light guide plate to homogenize the light emitted by the light emitting module, and the brightness of the light emitted from the display device is higher.
In specific implementation, the display device provided in the embodiment of the present invention may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
It should be noted that, the method embodiment provided in the embodiment of the present invention can be mutually referred to a corresponding light emitting module embodiment, and the embodiment of the present invention does not limit this. The sequence of the steps of the method embodiments provided in the embodiments of the present invention can be appropriately adjusted, and the steps can be correspondingly increased or decreased according to the situation, and any method that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application shall be covered by the protection scope of the present application, and therefore, the details are not repeated.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. A light emitting module, comprising: a control unit, and a substrate divided into n zones arranged in an array, n > 1,
each partition of the n partitions is provided with: the LED lamp comprises a plurality of first light-emitting units and a plurality of second light-emitting units which are connected in series, wherein the light-emitting angle of each first light-emitting unit is smaller than that of each second light-emitting unit; the light emitting cells on different partitions of the n partitions are not connected in series;
each subarea is provided with: the light-emitting modules are arranged in an array, each light-emitting module comprises a first light-emitting unit and a second light-emitting unit, and the light-emitting units in the light-emitting modules in adjacent rows are arranged in opposite modes; or, the plurality of first light-emitting units in each partition enclose a plurality of first rings with different sizes, and the plurality of second light-emitting units enclose a plurality of second rings with different sizes; the plurality of first rings and the plurality of second rings are concentric rings, and the plurality of first rings are spaced from the plurality of second rings one by one;
the control unit is used for: in a display stage, judging whether each partition in the n partitions meets a preset condition, wherein the preset condition comprises that: the corresponding pixels of each subarea in the image to be displayed only comprise black pixels; when the preset condition of each partition is not met, controlling the first light-emitting unit on each partition to emit light and forbidding to control the second light-emitting unit on each partition to emit light in a peep-proof display mode; and in a non-peep-proof display mode, controlling the first light-emitting unit and the second light-emitting unit on each partition to emit light.
2. The lighting module of claim 1, wherein the control unit is further configured to:
and when each subarea meets the preset condition, prohibiting controlling each light-emitting unit on each subarea to emit light.
3. The lighting module of claim 1, wherein each of the first and second lighting units is a mini-led.
4. The lighting module of claim 1, wherein the first light emitting unit is a high-directional light emitting diode, and the second light emitting unit is a scattering light emitting diode.
5. A method for controlling a lighting module, the method being used for a control unit in the lighting module, the lighting module further comprising: the substrate is divided into n subareas which are arranged in an array, n is more than 1, and each subarea of the n subareas is provided with: the LED lamp comprises a plurality of first light-emitting units and a plurality of second light-emitting units which are connected in series, wherein the light-emitting angle of each first light-emitting unit is smaller than that of each second light-emitting unit; the light emitting cells on different partitions of the n partitions are not connected in series;
each subarea is provided with: the light-emitting modules are arranged in an array, each light-emitting module comprises a first light-emitting unit and a second light-emitting unit, and the light-emitting units in the light-emitting modules in adjacent rows are arranged in opposite modes; or, the plurality of first light-emitting units in each partition enclose a plurality of first rings with different sizes, and the plurality of second light-emitting units enclose a plurality of second rings with different sizes; the plurality of first rings and the plurality of second rings are concentric rings, and the plurality of first rings are spaced from the plurality of second rings one by one; the method comprises the following steps:
in a display stage, judging whether each partition in the n partitions meets a preset condition, wherein the preset condition comprises that: the corresponding pixels of each subarea in the image to be displayed only comprise black pixels;
when the preset condition of each partition is not met, controlling the first light-emitting unit on each partition to emit light and forbidding to control the second light-emitting unit on each partition to emit light in a peep-proof display mode; and in a non-peep-proof display mode, controlling the first light-emitting unit and the second light-emitting unit on each partition to emit light.
6. A display device, characterized in that the display device comprises a light-emitting module according to any one of claims 1-4.
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| CN110068946B (en) | 2019-05-17 | 2021-12-03 | 京东方科技集团股份有限公司 | Display module, display device and visual angle control method |
| CN110333623B (en) * | 2019-06-17 | 2021-01-15 | 武汉华星光电技术有限公司 | Display device |
| CN110189628B (en) * | 2019-06-28 | 2023-01-10 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN112445023A (en) * | 2019-08-29 | 2021-03-05 | 惠州视维新技术有限公司 | Backlight module, display equipment and control method thereof |
| CN113448112B (en) * | 2020-08-13 | 2022-05-20 | 重庆康佳光电技术研究院有限公司 | Display panel and electronic device |
| US11862113B2 (en) | 2020-08-13 | 2024-01-02 | Chongqing Konka Photoelectric Technology Research Institute Co., Ltd. | Display panel and electronic device |
| CN113359349A (en) * | 2021-06-02 | 2021-09-07 | 深圳市华星光电半导体显示技术有限公司 | Backlight module and display device |
| CN115620634A (en) * | 2022-09-29 | 2023-01-17 | 上海天马微电子有限公司 | Display module and display device |
| WO2024098247A1 (en) * | 2022-11-08 | 2024-05-16 | 京东方科技集团股份有限公司 | Display panel and manufacturing method therefor, and display device |
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