CN116300210B - Backlight module, display device and driving method thereof - Google Patents
Backlight module, display device and driving method thereof Download PDFInfo
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- CN116300210B CN116300210B CN202310365677.4A CN202310365677A CN116300210B CN 116300210 B CN116300210 B CN 116300210B CN 202310365677 A CN202310365677 A CN 202310365677A CN 116300210 B CN116300210 B CN 116300210B
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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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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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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- 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
- G02F1/133621—Illuminating devices providing coloured light
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- Chemical & Material Sciences (AREA)
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- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The application discloses a backlight module, a display device and a driving method thereof, wherein the backlight module comprises a lamp panel, lamp beads and a micro-rotating structure, wherein the lamp beads are arranged on the lamp panel for luminous display; the micro-rotating structure is arranged on the light emitting surface of the lamp bead; the micro-rotating structure comprises a first area and a second area which are adjacently arranged, wherein a light absorbing material is arranged in the first area and filters light emitted by the lamp beads, so that the half-wave width of light obtained after the light passes through the first area is smaller than that of light obtained after the light passes through the second area. According to the application, two areas with different filtering degrees are arranged on the light emitting surface of the lamp bead, when the first area is moved to the upper part of the lamp bead by controlling the position movement of the two areas, the half-wave width of the light rays emitted by the lamp bead is narrowed, so that the color of the light is purer, the color gamut of the display picture of the display device is improved, and when the second area is rotated to the position right above the lamp bead, the display is performed in a common color gamut mode.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a backlight module, a display device and a driving method thereof.
Background
The Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD) has the advantages of thin body, power saving, no radiation and the like, is widely applied, and becomes an indispensable product in modern IT and video products; with the development of society and the enrichment of material conditions, the combination between various portable electronic devices such as mobile phones, computers and televisions and life and work of people is becoming more and more compact.
At present, a liquid crystal display device is widely used as a display component of electronic equipment in various electronic products, and along with continuous updating of the display device, the requirements of consumers on the color definition of the equipment are higher and higher, so that the color gamut value of the display device needs to be improved; the backlight module is an important component in the liquid crystal display device, the color gamut of the light bar serving as a light source is required to be higher and higher, the color gamut is improved by adding a layer of quantum dot film on the light bead at present, but the preparation time is too long and the color gamut is not adjustable after the preparation is finished due to the limitation of the quantum dot film processing technology and equipment.
Disclosure of Invention
The application aims to provide a backlight module, a display device and a driving method thereof, which can realize switching between a high color gamut and a common color gamut under the display requirement of the high color gamut.
The application discloses a backlight module of a display device, which comprises a lamp panel, lamp beads and a micro-rotating structure, wherein the lamp beads are arranged on the lamp panel to perform luminous display; the micro-rotating structure is arranged on the light emitting surface of the lamp bead; the micro-rotating structure comprises a first area and a second area which are adjacently arranged, wherein a light absorbing material is arranged in the first area, and the light absorbing material filters light emitted by the lamp beads, so that the half-wave width of light obtained after the light passes through the first area is smaller than that of light obtained after the light passes through the second area.
Optionally, the micro-rotation structure realizes rotation through a driving structure, the driving structure comprises a fixing rod and a driving wall, the fixing rod is fixed on the lamp panel, the driving wall is sleeved on the fixing rod, and one side of the driving wall away from the lamp panel is fixedly connected with the micro-rotation structure; the driving wall is made of conductive materials, two driving electrodes are arranged on two sides of the driving wall, the two driving electrodes are fixed on the lamp panel, one driving electrode is located below the first area, and the other driving electrode is located below the second area; an electric field is generated between the two driving electrodes so that the driving wall rotates to drive the micro-rotating structure to rotate, and when the first area of the micro-rotating structure rotates to be right above the lamp beads, the display device enters a high color gamut mode for display; and when the second area of the micro-rotating structure rotates to be right above the lamp beads, the display device enters a common color gamut mode for display.
Optionally, each micro-rotation structure is arranged corresponding to two lamp beads, the driving structure is arranged between the two lamp beads, the first area of the micro-rotation structure comprises two first fan-shaped structures which are symmetrical with each other with the fixing rod as a center, one side of the driving wall, which is far away from the lamp panel, is fixedly connected with the two first fan-shaped structures respectively, and the second area comprises two hollowed second fan-shaped structures which are symmetrical with each other with the fixing rod as a center; a first through hole and a blocking layer surrounding the first through hole are arranged on each first fan-shaped structure; the first through holes are filled with light absorbing materials to form a filter layer, and when the display device enters a high color gamut mode, the two first through holes of the two first fan-shaped structures of the first area of the micro-rotating structure rotate to the positions right above the adjacent two lamp beads respectively; when the display device enters the common color gamut mode, the second region of the micro-rotation structure rotates to the position right above the lamp beads.
Optionally, the lamp beads are mini LED lamp beads, the colors of the two lamp beads corresponding to each microstructure are different, and the color of the first through hole filling on the two fan-shaped structures corresponds to the color of the two lamp beads.
Optionally, the lamp beads on the lamp panel are divided into a plurality of first partitions and second partitions, and voltage signals input to the driving electrodes corresponding to the micro-rotating structures in each partition are controlled by the driving circuit of the display device respectively; when the first partition performs high color gamut mode display, the second partition performs normal color gamut mode or high color gamut mode display.
Optionally, the aperture of the first through hole is changed from large to small along the light emitting surface direction of the lamp bead.
Optionally, each micro-rotating structure is disposed corresponding to one bead, the second region is disposed around the first region, the first region is formed by light absorbing material corresponding to the color of the bead, and the second region is formed by transparent material.
Optionally, the light absorbing material is a quantum dot fluorescent film, a shielding layer is arranged on the light emitting surface of the lamp bead, the shielding layer is arranged above the micro-rotating structure, and the shielding layer corresponds to the region of the lamp bead and is hollowed out.
The application also discloses a display device which comprises the backlight module, a display panel and a driving circuit, wherein the driving circuit respectively outputs corresponding electric signals to the lamp beads and the driving electrodes and is used for driving the lamp beads of the backlight module to emit light and controlling the micro-rotation structure of the backlight module to rotate so as to control the display panel to enter a high color gamut mode or a common color gamut mode.
The application also discloses a driving method of the display device, which is used for driving the display device, and comprises the following steps:
The lamp beads emit light after receiving the electric signals output by the driving circuit so as to emit divergent light rays to perform backlight display of the display device;
outputting a switching signal of a color gamut, and controlling the micro-rotating structure to rotate when outputting a signal of a high color gamut mode so that a first area of the micro-rotating structure rotates to be right above the lamp beads; when a signal of the common color gamut mode is output, the micro-rotating structure is controlled to rotate so that the second area of the micro-rotating structure rotates to the position right above the lamp beads.
Compared with the scheme of arranging the quantum dot film on the lamp bead, the micro-rotating structure is arranged on the light-emitting surface of the lamp bead, the micro-rotating structure comprises two different light-transmitting areas, the color gamut can be switched, the two light-transmitting areas are a first area and a second area, after the first area and the second area receive divergent light rays emitted by the same lamp bead, the light filtering degree of the emitted light rays is different, when the second area of the micro-rotating structure rotates to be right above the lamp bead, the light rays emitted by the lamp bead still are common light rays after passing through the second area, the light brightness of a vertical angle or a side angle is the same, the color is unchanged, the display device enters a common color gamut mode for displaying, and the color gamut of a display picture is not obviously changed; when the first area of the micro-rotating structure rotates to the position right above the lamp beads, the display device enters a high color gamut mode for display, the first area can narrow the half-wave width of light rays and become purer light, and therefore the color gamut of a display picture of the display device is improved, and the display effect is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:
Fig. 1 is a schematic diagram of a structure of a backlight module in a high color gamut mode according to a first embodiment of the present application;
FIG. 2 is a high gamut mode optical path schematic of a first embodiment of the present application;
fig. 3 is a schematic diagram of a structure of a backlight module according to a first embodiment of the present application in a normal color gamut mode;
FIG. 4 is a schematic view of a common color gamut mode optical path of a first embodiment of the present application;
Fig. 5 is a schematic diagram of a structure of a backlight module according to a second embodiment of the present application in a normal color gamut mode;
FIG. 6 is a schematic structural view of a micro-rotating structure according to a second embodiment of the present application;
FIG. 7 is a structural perspective view of a micro-rotating structure according to a second embodiment of the present application;
FIG. 8 is a schematic structural view of a micro-rotating structure according to a third embodiment of the present application;
fig. 9 is a schematic diagram of a structure of a backlight module in a high color gamut mode according to a fourth embodiment of the application;
FIG. 10 is a schematic view of a light path of a common color gamut of a backlight module according to a fourth embodiment of the present application;
Fig. 11 is a schematic diagram of a structure of a backlight module in a high color gamut mode according to a fifth embodiment of the application;
fig. 12 is a schematic view of a structure of a backlight module in a normal color gamut mode according to a sixth embodiment of the application;
Fig. 13 is a schematic structural diagram of a backlight module according to a seventh embodiment of the present application in a normal domain mode;
fig. 14 is a schematic diagram of a structure of a backlight module according to an eighth embodiment of the present application in a high color gamut mode;
fig. 15 is a schematic view of a display device according to a ninth embodiment of the present application;
fig. 16 is a flowchart of a driving method of a display device according to a tenth embodiment of the present application.
100, A backlight module; 110. a lamp panel; 120. a lamp bead; 130. a micro-rotating structure; 131. a first region; 132. a second region; 133. a first fan-shaped structure; 134. a second fan-shaped structure; 135. a first through hole; 136. a barrier layer; 137. a second through hole; 138. a light absorbing material; 140. a driving structure; 141. a fixed rod; 142. a driving wall; 150. a driving electrode; 160. a moving structure; 171. a first partition; 172. a second partition; 180. a limit structure; 190. a shielding layer; 200. a display device; 300. a driving circuit; 400. a display panel.
Detailed Description
It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of the azimuth or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are described based on the azimuth or relative positional relationship shown in the drawings, are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The application is described in detail below with reference to the attached drawings and alternative embodiments.
As shown in fig. 1, as a first embodiment of the present application, a backlight module 100 of a display device is disclosed, the backlight module 100 includes a lamp panel 110, lamp beads 120 and a micro-rotation structure 130, the lamp beads 120 are arranged on the lamp panel 110 in a matrix, circuit traces are generally arranged on the lamp panel 110, and under the condition of power-on, the lamp beads 120 perform luminous display; the micro-rotating structure 130 is disposed on the light emitting surface of the lamp bead 120, and changes the purity of the light when the lamp bead 120 emits light; the micro-rotating structure 130 includes a first region 131 and a second region 132 that are disposed adjacently, wherein a light absorbing material 138 is disposed in the first region 131, the light absorbing material 138 is also referred to as a filtering material, the first region 131 may also be referred to as a filtering layer region, the light absorbing material 138 is the same as a material of a color blocking layer in the display device, and the light absorbing material 138 filters light emitted by the lamp beads 120, so that a half-wave width of a light obtained after the light passes through the first region 131 is narrower than a half-wave width of a light obtained after the light passes through the second region 132.
After the first area 131 and the second area 132 receive the divergent light emitted by the same lamp bead, the filtering degrees of the emitted light are different, so that the switching between the high color gamut and the common color gamut is realized, as shown in fig. 1 and fig. 2, when the first area 131 of the micro-rotation structure 130 rotates to the position right above the lamp bead 120, the display device enters the high color gamut mode for display, and the first area 131 can narrow the half-wave width of the light to become purer light, so that the color gamut of the display picture of the display device is improved, and the display effect is improved; referring to fig. 3 and fig. 4, when the second area 132 of the micro-rotating structure 130 rotates to a position right above the lamp bead 120, the light emitted by the lamp bead 120 is still normal light after passing through the second area 132, the purity of the light is not improved, the brightness of the light at the vertical angle or the side angle is the same, the color is not changed, the display device enters the normal color gamut mode to display, and the color gamut of the display screen is not obviously changed.
As a second embodiment of the present application, as shown in fig. 5 to 7, which is a further refinement and improvement of the first embodiment, the present embodiment mainly teaches how the first region 131 and the second region 132 of the micro-rotating structure 130 move or rotate to change positions, the micro-rotating structure 130 rotates through a driving structure 140, the driving structure 140 includes a fixing rod 141 and a driving wall 142, the fixing rod 141 is fixed on the lamp panel 110, the driving wall 142 is sleeved on the fixing rod 141, and a side of the driving wall 142 away from the lamp panel 110 is fixedly connected with the micro-rotating structure 130; the driving wall 142 is made of conductive material, two driving electrodes 150 are disposed on two sides of the driving wall 142, two driving electrodes 150 are fixed on the lamp panel 110, one driving electrode is located below the first area 131, and the other driving electrode is located below the second area 132; an electric field is generated between the two driving electrodes 150 to rotate the driving wall 142, so as to drive the micro-rotating structure 130 to rotate, and when the first region 131 of the micro-rotating structure 130 rotates to a position right above the lamp beads 120, the display device 200 enters a high color gamut mode for displaying; when the second region 132 of the micro-rotating structure 130 is rotated to a position directly above the lamp beads 120, the display device 200 enters a normal color gamut mode display.
Each micro-rotating structure 130 is arranged corresponding to at least two lamp beads 120, the first region 131 of the micro-rotating structure 130 comprises two first fan-shaped structures 133 which are symmetrical with each other with the fixing rod 141 as a center, one side of the driving wall 142 away from the lamp panel 110 is fixedly connected with the two first fan-shaped structures 133 respectively, and the second region 132 comprises two hollowed-out second fan-shaped structures 134 which are symmetrical with each other with the fixing rod 141 as a center; the first fan-shaped structure 133 is provided with a first through hole 135 and a blocking layer 136 surrounding the first through hole 135, the first through hole 135 can make the divergent light emitted by the lamp beads 120 converge, so that the light in the direction perpendicular to the light emitting surface is brighter, the light on the side is blocked or the brightness is lower because of the divergent light, and then the picture seen by the view angle of the side is darker, and the display content cannot be seen; when the display device 200 enters the high color gamut mode, the two first through holes 135 of the two first fan-shaped structures 133 of the first region 131 of the micro-rotation structure 130 are respectively rotated to right above the two adjacent lamp beads 120; when the display device 200 enters the normal color gamut mode, the second region 132 of the micro-rotation structure 130 rotates to a position right above the lamp beads 120; the first through hole 135 changes to increase the light gathering degree, and the light absorbing material in the first through hole 135 increases the purity of the light; the blocking layer 136 may be formed of a material having a certain light polymerization capability, or may be formed of a common transparent material, and may be selected according to practical needs, and the first through hole 135 may be circular or fan-shaped, and the light absorbing layer coated on the micro-rotating structure 130 may be in various shapes such as a circular shape, a fan-shaped shape, etc., so long as the light beam emitted by the LED can be covered.
Along the light emitting surface direction of the lamp beads, the aperture of the first through hole is changed from large to small, and the first through hole not only can improve the purity of light, but also can gather divergent light rays emitted by the lamp beads 120; in fact, the light converging degrees of the first area 131 and the second area 132 are different, the divergent light emitted by the lamp bead 120 initially passes through the first area 131 and becomes a collimated light with a purer color, and the divergent light emitted by the lamp bead 120 by the second area 132 is not gathered or converged, or the gathering degree is smaller than that of the first area 131. When the first region 131 of the micro-rotating structure 130 rotates to a position right above the light beads 120, the display device 200 enters a high color gamut mode for display, the micro-rotating structure 130 automatically stops rotating or moving, and divergent light emitted by the light beads 120 passes through the first region 131 and becomes collimated light, so that the content displayed on the display panel 400 of the display device 200 can be seen only from a view angle perpendicular to the light emitting surface, the light on both sides is not gathered, so that the divergent light enters the display panel 400, the brightness is dark, and the content displayed on the display panel 400 seen from other view angles is dark or cannot be seen clearly, thereby realizing peep-proof display; when the second area 132 of the micro-rotating structure 130 rotates to a position right above the lamp beads 120, the display device 200 enters the normal color gamut mode for displaying, the scattered light emitted by the lamp beads 120 is still scattered light after passing through the second area 132, the viewing angle is enlarged, the brightness of the light in the vertical direction of the light emitting surface is basically the same as that of the light at the edge, the content displayed by the display panel 400 can be seen from the side, and the display device is in the sharing mode for displaying the normal color gamut; the purity of the light in the first area can be improved by punching holes and filling light absorption and absorption materials in the holes so as to improve the purity of the light, or a light absorption material can be directly paved on the first area to form a filter layer so as to improve the purity of the light emitted by the lamp beads, and the method is not limited to the two types, so long as the effect of improving the purity of the light can be achieved.
As shown in fig. 8, as a third embodiment of the present application, in any of the above embodiments, the purity of light is improved for the lamp beads with different colors, and referring to fig. 6 to 8, the lamp beads are mini LED lamp beads, the colors of two lamp beads corresponding to each microstructure are different, and the color of the first through holes on the two first fan-shaped structures corresponds to the color of the two lamp beads; taking two adjacent lamp beads, one lamp bead is a lamp bead emitting red light, and the other lamp bead emitting green light as an example, wherein in the two corresponding first through holes, the first through holes of the lamp beads corresponding to the red light are filled with red filter materials, and the first through holes of the lamp beads corresponding to the green light are filled with green filter materials, so that the purity of the color of the corresponding lamp beads is improved, and high-color-gamut display is realized.
Further, in order to avoid deviation of the stop position caused by inertia influence of rotation, the fixing rod 141 is provided with a limit structure 180, the limit structure 180 is disposed on two sides of the fixing rod 141, and the limit structure 180 controls the rotatable angle of the first fan-shaped structure 133 to be a, wherein a is 60 degrees less than or equal to 120 degrees, and is generally 90 degrees.
In this embodiment, the micro-rotating structure 130 and the driving structure 140 are integrally formed by two-photon 3D printing technology to form a micro-rotating structure capable of rotating to improve the color gamut and simultaneously realizing the peep-proof effect, and charged particles are added in the process of preparing the micro-selecting device to make the micro-rotating structure (such as the driving wall 142) have a certain electrical property, so that the micro-rotating structure can be driven by an electrode (or magnetic particles are added to make the micro-rotating structure have magnetism, and driven by a magnetic field, and then electrically driven for example); the drive wall 142 is configured to be forced to rotate the entire micro-rotating structure 90 °. The driving wall 142 of each micro-rotation structural member is provided with a limiting structure on the left and right, the purpose of the limiting structure is to enable the rotation angle of the micro-rotation structural member to be stabilized at 90 degrees, and in addition, an electrode is arranged near the limiting structure and used for driving the micro-rotation structural member to rotate, and the driving wall 142 with the electricity is stressed to rotate mainly by means of the electricity transmitted to the electrode by an external driving IC. When the color gamut is required to be switched, the part of the rotation plane containing the light absorbing material layer is rotated to the position above the lamp beads, and the light with the low color gamut emitted by the lamp beads is filtered by the light absorbing film layer, so that RGB becomes purer, and the improvement of the color gamut is realized. When the original color gamut is needed to be changed back, the rotator is controlled to reversely rotate by 90 degrees, so that the hollowed-out part is positioned above the lamp beads, and the panel is in an initial color gamut state.
The above solution is a light-absorbing color gamut adjustment solution, and is equally applicable to the color gamut adjustment structure described in the present proposal, and light-absorbing luminescent materials (quantum dots are taken as an example, and other types of fluorescent materials may be used) are taken as examples, the present proposal is not limited to increasing from a low color gamut to a high color gamut, and can also be switched from one color gamut standard to another color gamut standard, and the most important is to adjust the light source light type in the backlight (the initial backlight is YAG backlight): when the high color gamut is required to be displayed, the rotating device rotates, and part of blue light in the YAG backlight can excite quantum dots on the quantum dot film to emit RG light and simultaneously mix with the rest light emitted by the lamp beads to emit white light with more obvious RGB wave crests, so that the high color gamut display can be realized. When low color gamut display is required, the micro-rotation structure member is reversely rotated by 90 degrees, table 1 and fig. 8 are related analog data (only used as an example), the color gamut can be switched from 60% of NTSC to 72% of NTSC through a color gamut switching mode, specific color gamut adjustment can be adjusted and combined by adjusting the concentration of the quantum dot film layer, the current size in the backlight lamp beads and the like, and redundant description is omitted here.
| YAG backlight | QD+YAG | |
| Rx | 0.623 | 0.643 |
| Ry | 0.352 | 0.340 |
| Gx | 0.329 | 0.305 |
| Gy | 0.583 | 0.619 |
| Bx | 0.151 | 0.152 |
| By | 0.059 | 0.072 |
| NTSC | 61.58％ | 72.02％ |
| sRGB | 84.9％ | 96％ |
Table 1 color gamut comparison before and after switching
Referring to fig. 9 to 10, as a fourth embodiment of the present application, the light absorbing material is a quantum dot fluorescent film, a shielding layer 190 is disposed on the light emitting surface of the lamp bead 120, the shielding layer 190 is disposed above the micro-rotation structure, the shielding layer 190 is disposed in a whole layer to cover all the lamp beads, the shielding layer is disposed in a hollowed-out manner corresponding to the region of the lamp bead, and the shielding layer 190 includes a black shielding layer, which is the same as the material used for the black matrix layer in the display device.
For the quantum dot film used on the micro-rotation structural member, a film layer needs to be added into the backlight, and the film layer can shield the light reflected downwards by the film layer above the backlight so that the fluorescent quantum dot of the backlight in the low color gamut mode does not absorb the light to emit stray light. Specifically, as can be seen from fig. 9, the circle is in a hollow or transparent state, light is not blocked, the part outside the circle is a black shading layer, when the micro-rotation structural member rotates to the hollow part, RG light rays emitted by the quantum dots after the light rays of the lamp beads are irradiated and the original light rays of the lamp beads can be emitted from the hollow/transparent part together; when the low color gamut picture is displayed, the quantum dot film position of the micro-rotation structural member can rotate to the position of the shading layer, even if the quantum dot can be excited by partial illumination, light rays excited by the quantum dot of the shading layer on the upper layer can not be emitted, so that uneven color development can be prevented, and the position where the black shading layer is placed does not block the principal ray reasonably.
As shown in fig. 11, as a fifth embodiment of the present application, unlike the above-mentioned embodiments, a second through hole 137 is further provided in each of the first fan-shaped structures 133, a light-transmitting material is filled in the second through hole 137 to form a lens structure 138, and the lens structure 138 formed in the second through hole 137 makes the concentration degree of the light emitted by the lamp bead 120 different, and after the light passes through the first through hole filled with the light-absorbing material, the first through hole can increase the light concentration degree and increase the purity of the light; after the light passes through the second through hole filled with the light-transmitting material with high refractive index, the second through hole can improve the light convergence degree, and can also improve the partial purity of light, the first through hole and the second through hole are both improved to the convergence degree and the purity of light, but feedback effect and colour gamut improvement effect have certain difference, the improvement of first through hole to the light purity is obviously higher than the improvement of second through hole to the light purity, and the light convergence degree of first through hole to scattered light is obviously weaker than the light convergence degree of second through hole to scattered light, if peep-proof mode is selected, then the second through hole can be rotated to the position right above the lamp pearl, if high colour gamut display mode is selected, then the first through hole is rotated to the position right above the lamp pearl.
Of course, the first through hole and the second through hole may be filled with a light absorbing material to improve the purity of the light, or may be filled with a light transmitting material to form two lens structures, and it should be noted that the focal lengths of the two lens structures 138 formed by the first through hole 135 and the second through hole 137 are equal to or greater than the distance from the micro-rotating structure 130 to the lamp bead 120; more than one lens may be disposed on the first fan-shaped structure 133 of the micro-rotation structure 130, for example, two types of lenses may be disposed, and the thicknesses of the two types of lenses are different, so that the converging degrees of the light rays emitted by the lamp beads 120 are different, and the peeping prevention at different angles is achieved, but the focal lengths of the two types of lenses are greater than or equal to (or slightly smaller than) the distance from the rotation plane to the lamp beads 120, so as to achieve the function of focusing.
As shown in fig. 12, as a sixth embodiment of the present application, unlike the above-mentioned embodiments, each of the micro rotary structures 130 is disposed corresponding to one of the beads 120, the second region 132 is disposed around the first region 131, the first region 131 is formed of a light absorbing material corresponding to the color of the bead, the second region 132 is formed of a transparent material, the first region 131 corresponds to the first through hole 135 in the above-mentioned embodiments, and the light absorbing material may be filled in the first region 131, so that the purity of the light emitted from the lower bead of the first region 131 becomes higher after passing through the first region, thereby realizing high color gamut display.
As shown in fig. 13, as a seventh embodiment of the present application, the micro-rotating structure 130 is disposed in a whole layer, and covers all the lamp beads 120, the first area 131 and the second area 132 are disposed in plurality, each of the first area 131 and the second area 132 is disposed corresponding to a row of the lamp beads 120, and the first area 131 and the second area 132 are disposed at intervals along the data line direction of the display device 200; the micro-rotating structure 130 is connected with the lamp panel 110 through a moving structure 160, one end of the moving structure 160 is fixedly connected with the micro-rotating structure 130, one end of the moving structure 160 is movably connected with the lamp panel 110, the moving structure 160 moves up and down along the direction of the data line, and a first through hole 135 is formed in the first region 131 corresponding to each lamp bead 120.
When the moving structure 160 moves up by a preset distance and the first region 131 of the micro-rotating structure 130 rotates to a position right above the lamp bead 120, the lamp bead 120 faces the first through hole 135, and the display device 200 enters a high color gamut mode for display; after the moving structure 160 moves up by a preset distance, the display device 200 enters the normal color gamut mode display when the second region 132 of the micro-rotation structure 130 rotates to be directly above the lamp beads 120; the moving structure 160 may be a pulley with magnetic ions, and two large driving electrodes are arranged up and down on the moving structure, and after the driving electrodes are electrified, the pulley can slide up and down, so as to drive the whole layer of peep-proof structure to move up and down; the moving structure can drive the whole layer of peep-proof structure to move up and down by the micro motor, and can also be a dial switch, and the whole layer of peep-proof structure can also move up and down by a mechanical transmission structure.
As shown in fig. 14, as an eighth embodiment of the present application, unlike the above-described embodiments, the present embodiment can realize a partial area high color gamut display of a display area, the lamp beads on the lamp panel are divided into a plurality of first partitions 171 and second partitions 172, and voltage signals input to the driving electrodes corresponding to the micro-rotating structures 130 in each partition are controlled by the driving circuits of the display device, respectively; when the first partition 171 performs high color gamut mode display, the second partition 172 performs normal color gamut mode or high color gamut mode display; the electrical signals connected to each of the subarea areas are different or opposite, a part of the subareas realize the high color gamut mode, a part of the subareas open the common color gamut mode, and the areas needing high color gamut display can be automatically selected, for example, when a user browses a picture with pictures, the corresponding picture areas can be displayed in the high color gamut mode, and the picture text areas can be displayed in the common color gamut mode.
As shown in fig. 15, as a ninth embodiment of the present application, a display device 200 is also disclosed, where the display device 200 includes the backlight module 100, the display panel 400 and the driving circuit 300 according to any of the embodiments above, and the driving circuit 300 outputs corresponding electrical signals to the lamp beads 120 and the driving electrodes 150, respectively, for driving the lamp beads 120 of the backlight module 100 to emit light and controlling the micro-rotation structure 130 of the backlight module 100 to rotate, so as to control the display panel 400 to enter the high color gamut mode or the normal color gamut mode.
It should be noted that, the light bead 120 of the present application may be a mini-LED light bead 120, or may be a Micro-LED light bead 120, or of course, may be a light bead 120 in a backlight module 100 of a common display device 200, and may be selected according to practical situations, and the present application is mainly illustrated by using the mini-LED light bead 120, and uses a Micro-rotating structure as a switch for color gamut switching, so as to implement panel color gamut adjustment, and meanwhile, can implement partition control, so as to implement requirements of users for different color gamuts of a panel.
As shown in fig. 16, as a tenth embodiment of the present application, there is disclosed a driving method of a display device for driving the display device according to the above embodiment, characterized by comprising the steps of:
s1: the lamp beads emit light after receiving the electric signals output by the driving circuit so as to emit divergent light rays to perform backlight display of the display device;
s2: outputting a switching signal of a color gamut, and controlling the micro-rotating structure to rotate when outputting a signal of a high color gamut mode so that a first area of the micro-rotating structure rotates to be right above the lamp beads; when a signal of the common color gamut mode is output, the micro-rotating structure is controlled to rotate so that the second area of the micro-rotating structure rotates to the position right above the lamp beads.
Referring to fig. 5, 6, 12 and 13, the driving chip of the display device 200 provides corresponding driving voltages to the driving electrodes 150 by the user's autonomous selection control to enter the high color gamut mode or the normal color gamut mode, and an electric field is generated between the driving electrodes 150 to rotate the driving wall 142, so that the first region 131 or the second region 132 of the micro-rotation structure 130 rotates above the lamp beads 120 to realize the high color gamut or the normal color gamut mode display; in addition, in the case of partitioning, the driving chip may output different voltage signals to different partition areas according to the corresponding display areas, and control the micro-rotation structures 130 of the different partition areas to perform different rotations, so as to implement the partitioned high-color-gamut display.
It should be noted that, the limitation of each step in the present solution is not to be considered as limiting the sequence of steps on the premise of not affecting the implementation of the specific solution, and the steps written in the previous step may be executed before, or executed after, or even executed simultaneously, so long as the implementation of the present solution is possible, all the steps should be considered as falling within the protection scope of the present application.
It should be noted that, the inventive concept of the present application can form a very large number of embodiments, but the application documents are limited in space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features can be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.
The above description of the application in connection with specific alternative embodiments is further detailed and it is not intended that the application be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.
Claims (9)
1. A backlight module of a display device, comprising:
A lamp panel;
The lamp beads are arranged on the lamp panel and used for luminous display; and
The micro-rotating structure is arranged on the light emitting surface of the lamp bead;
The micro-rotating structure comprises a first area and a second area which are adjacently arranged, wherein a light absorbing material is arranged in the first area, and the light absorbing material filters the light emitted by the lamp beads, so that the half-wave width of the light obtained after the light passes through the first area is smaller than the half-wave width of the light obtained after the light passes through the second area;
The micro-rotating structure rotates through a driving structure, the driving structure comprises a fixing rod and a driving wall, the fixing rod is fixed on the lamp panel, the driving wall is sleeved on the fixing rod, and one side, far away from the lamp panel, of the driving wall is fixedly connected with the micro-rotating structure; the driving wall is made of conductive materials, two driving electrodes are arranged on two sides of the driving wall, the two driving electrodes are fixed on the lamp panel, one driving electrode is located below the first area, and the other driving electrode is located below the second area;
An electric field is generated between the two driving electrodes so that the driving wall rotates to drive the micro-rotating structure to rotate, and when the first area of the micro-rotating structure rotates to be right above the lamp beads, the display device enters a high color gamut mode for display; and when the second area of the micro-rotating structure rotates to be right above the lamp beads, the display device enters a common color gamut mode for display.
2. The backlight module according to claim 1, wherein each micro-rotation structure is arranged corresponding to two lamp beads, the driving structure is arranged between the two lamp beads, a first area of the micro-rotation structure comprises two first fan-shaped structures which are symmetrical with each other with a fixing rod as a center, one side of the driving wall away from the lamp panel is fixedly connected with the two first fan-shaped structures respectively, and the second area comprises two hollowed-out second fan-shaped structures which are symmetrical with each other with the fixing rod as a center; a first through hole and a blocking layer surrounding the first through hole are arranged on each first fan-shaped structure;
The first through holes are filled with light absorbing materials to form a filter layer, and when the display device enters a high color gamut mode, the two first through holes of the two first fan-shaped structures of the first area of the micro-rotating structure rotate to the positions right above the adjacent two lamp beads respectively; when the display device enters the common color gamut mode, the second region of the micro-rotation structure rotates to the position right above the lamp beads.
3. The backlight module according to claim 2, wherein the lamp beads are mini LED lamp beads, the two lamp beads corresponding to each micro-rotation structure are different in color, and the color of the first through holes on the two first fan-shaped structures is corresponding to the color of the two lamp beads.
4. The backlight module according to claim 2, wherein the lamp beads on the lamp panel are divided into a plurality of first partitions and second partitions, and voltage signals input to the driving electrodes corresponding to the micro-rotation structures in each partition are controlled by the driving circuit of the display device respectively; when the first partition performs high color gamut mode display, the second partition performs normal color gamut mode or high color gamut mode display.
5. The backlight module according to claim 2, wherein the aperture of the first through hole is reduced from large to small along the light emitting surface of the lamp bead.
6. The backlight module according to claim 1, wherein each of the micro-rotating structures is disposed corresponding to one of the light beads, the second region is disposed around the first region, the first region is formed of a light absorbing material corresponding to a color of the light bead, and the second region is formed of a transparent material.
7. The backlight module according to claim 1, wherein the light absorbing material is a quantum dot fluorescent film, a shielding layer is arranged on the light emitting surface of the lamp bead, the shielding layer is arranged above the micro-rotation structure, and the shielding layer is hollowed out corresponding to the region of the lamp bead.
8. A display device, comprising the backlight module, the display panel and the driving circuit according to any one of claims 1-7, wherein the driving circuit outputs corresponding electrical signals to the lamp beads and the driving electrodes, respectively, for driving the lamp beads of the backlight module to emit light and controlling the rotation of the micro-rotation structure of the backlight module so as to control the display panel to enter a high color gamut mode or a normal color gamut mode.
9. A driving method of a display device for driving the display device according to claim 8, comprising the steps of:
The lamp beads emit light after receiving the electric signals output by the driving circuit so as to emit divergent light rays to perform backlight display of the display device;
outputting a switching signal of a color gamut, and controlling the micro-rotating structure to rotate when outputting a signal of a high color gamut mode so that a first area of the micro-rotating structure rotates to be right above the lamp beads; when a signal of the common color gamut mode is output, the micro-rotating structure is controlled to rotate so that the second area of the micro-rotating structure rotates to the position right above the lamp beads.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW581853B (en) * | 2002-06-28 | 2004-04-01 | Au Optronics Corp | Illuminating device capable of dynamically generating lights of different wavelengths |
| JP2006258973A (en) * | 2005-03-15 | 2006-09-28 | Sony Corp | Back-light device and liquid crystal display device |
| KR100834853B1 (en) * | 2007-03-27 | 2008-06-03 | 호서대학교 산학협력단 | Lighting apparatus of checking large glass plate for display device |
| CN101441356A (en) * | 2007-11-23 | 2009-05-27 | 上海广电Nec液晶显示器有限公司 | Backlight source module group and drive method thereof |
| CN110262113A (en) * | 2019-06-11 | 2019-09-20 | 昆山龙腾光电有限公司 | Colored optical filtering substrates, manufacturing method and its display device |
| CN217060692U (en) * | 2021-12-27 | 2022-07-26 | 东莞市鸿超芯科技有限公司 | Light adjustable liquid crystal display device |
| CN115407565A (en) * | 2022-11-01 | 2022-11-29 | 惠科股份有限公司 | Backlight, display device and partition control method |
-
2023
- 2023-03-30 CN CN202310365677.4A patent/CN116300210B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW581853B (en) * | 2002-06-28 | 2004-04-01 | Au Optronics Corp | Illuminating device capable of dynamically generating lights of different wavelengths |
| JP2006258973A (en) * | 2005-03-15 | 2006-09-28 | Sony Corp | Back-light device and liquid crystal display device |
| KR100834853B1 (en) * | 2007-03-27 | 2008-06-03 | 호서대학교 산학협력단 | Lighting apparatus of checking large glass plate for display device |
| CN101441356A (en) * | 2007-11-23 | 2009-05-27 | 上海广电Nec液晶显示器有限公司 | Backlight source module group and drive method thereof |
| CN110262113A (en) * | 2019-06-11 | 2019-09-20 | 昆山龙腾光电有限公司 | Colored optical filtering substrates, manufacturing method and its display device |
| CN217060692U (en) * | 2021-12-27 | 2022-07-26 | 东莞市鸿超芯科技有限公司 | Light adjustable liquid crystal display device |
| CN115407565A (en) * | 2022-11-01 | 2022-11-29 | 惠科股份有限公司 | Backlight, display device and partition control method |
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