Diffusion structure and backlight module

Abstract

The invention relates to the field of display, and particularly discloses a diffusion structure and a backlight module, the diffusion structure comprises an induction layer, a control layer and a sensor, and the sensor is electrically connected with the control layer; a plurality of packaging particles are arranged in the sensing layer; the sensor is used for detecting and identifying light source color information of the light source and transmitting a detection signal to the control layer, and the control layer carries out processing according to the detection signal and controls the packaging particles to be switched among a first state, a second state and a third state; the packaging particles display a preset single color in a first state, reflect light irradiated by the light source in a second state, and display a preset combined color in a third state. Through the above mode, the diffusion structure not only can realize light diffusion, but also can correct the deviation of the backlight color.

Description

Technical Field

[0001] The present application relates to the display field, and in particular to a diffusion structure and a backlight module. Background Art

[0002] Improving the color quality of backlight sources has always been a goal pursued by the entire display field. The factor directly affecting the color of a backlight source is the light emitted by the ratio of the light source chip and the phosphor. The accuracy of this ratio will directly affect the color deviation of the backlight source. In addition, other components on the backlight module will also affect the color deviation of the backlight source.

[0003] However, since each film in the backlight module is generally used to adjust the light, for example, a diffuser is generally used to diffuse the light, and cannot correct the color of the backlight source.

[0004] Therefore, how to make the diffusion structure not only diffuse the light but also correct the deviation of the backlight source color has become an urgent problem to be solved in the art. Summary of the invention

[0005] The present application discloses a diffusion structure and a backlight module, the purpose of which is to enable the diffusion structure to diffuse light and to compensate and correct the color error of the backlight source.

[0006] The embodiment of the present application discloses a diffusion structure, including a sensing layer, a control layer and a sensor, wherein the sensor is electrically connected to the control layer; a plurality of encapsulated particles are arranged in the sensing layer; the sensor is used to detect and identify the light source color information of a light source, and transmit the detection signal to the control layer, and the control layer processes according to the detection signal and controls the encapsulated particles to switch between a first state, a second state and a third state; the encapsulated particles display a preset single color in the first state, reflect the light irradiated by the light source in the second state, and display a preset combination color in the third state.

[0007] Optionally, the light source color information includes color matching, the control layer includes a current controller, and the current controller has a preset specification value built in; the sensor transmits a color matching signal to the current controller, and the current controller processes the received color matching signal to form a color deviation value, and compares it with the preset specification value; when the color deviation value is lower than the preset specification value, the current controller controls the encapsulated particles to be in the first state; when the color deviation value is equal to the preset specification value, the current controller controls the encapsulated particles to be in the second state; when the color deviation value is greater than the preset specification value, the current controller controls multiple encapsulated particles to be in the third state.

[0008] Optionally, the encapsulated particles include a first coil layer, a second coil layer and an encapsulation layer, the first coil layer is made of a light-transmitting material, the encapsulation layer is coated on the outside of the first coil layer, the second coil layer is located on the inside of the first coil layer, and the second coil layer and the first coil layer are spaced apart to form a second accommodating cavity, and a first accommodating cavity is formed in the second coil layer; the first accommodating cavity is filled with fluorescent powder of a preset color, and when the encapsulated particles are in the first state or the third state, the encapsulation layer is converted from an opaque state to a light-transmitting state, and the fluorescent powder enters the second accommodating cavity from the first accommodating cavity.

[0009] Optionally, a plurality of channels are provided on the second coil layer, and the channels connect the first accommodating cavity with the second accommodating cavity; a contraction piece is provided in the channel, and when the second coil layer is energized, the contraction piece controls the opening size of the channel according to the current size of the second coil layer.

[0010] Optionally, the control layer also includes a power transmission coil, and the current controller is electrically connected to the power transmission coil; the current controller converts the processed signal into an electrical signal and transmits it to the power transmission coil; the first coil layer and the second coil layer are respectively energized with the power transmission coil through electromagnetic induction.

[0011] Optionally, the plurality of encapsulated particles include at least a first encapsulated particle, a second encapsulated particle and a third encapsulated particle, and the phosphors in the first encapsulated particle, the second encapsulated particle and the third encapsulated particle have different colors.

[0012] Optionally, the power transmission coil includes a first power transmission coil, a second power transmission coil and a third power transmission coil, the first power transmission coil has the same frequency as the first coil layer and the second limiting circle layer in the first encapsulated particle, the second power transmission coil has the same frequency as the first coil layer and the second coil layer in the second encapsulated particle; the third power transmission coil has the same frequency as the first coil layer and the second coil layer in the third encapsulated particle; the frequencies of the first power transmission coil, the second power transmission coil and the third power transmission coil are different from each other.

[0013] Optionally, the current controller processes the received detection signal and outputs an electrical signal to at least one of the first power transmission coil, the second power transmission coil and the third power transmission coil.

[0014] Optionally, when the encapsulated particles are not energized, the outer surface of the encapsulation layer is in a matte state, reflecting or refracting light irradiated by a light source.

[0015] The embodiment of the present application further discloses a backlight module, including a light source. The backlight module also includes the above-mentioned diffusion structure, and the diffusion structure is arranged on one side of the light emitting surface of the light source.

[0016] The present application replaces the diffuser in the traditional backlight module by setting a diffusion structure. When the light emitted by the light source irradiates the diffusion structure, the sensor detects and identifies the color information of the light source, and transmits the detection signal to the control layer. The control layer processes the obtained detection signal. When the signal processed by the control layer is lower than the preset standard, the control layer controls the encapsulated particles to display the preset color, so that the deviation color of the light source can be compensated; when the signal processed by the control layer meets the preset standard, the control layer controls the encapsulated particles to reflect or refract the light irradiated by the light source to form a diffusion of the light; that is, the present application uses the sensor in the diffusion structure to identify the color information of the light source, and processes the detection signal of the sensor through the control layer, so as to control the encapsulated particles to switch between the first state, the second state and the third state, and the encapsulated particles display a single color in the first state to compensate for the low display of the corresponding color, and display a combined color when the encapsulated particles are in the third state, and the color whitening compensation is performed for the high display of the corresponding color; when the encapsulated particles are in the second state, the diffusion structure has the same light processing effect as the traditional diffuser, so that the diffusion structure can diffuse the light and compensate and correct according to the color deviation of the backlight source. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 A schematic diagram of an embodiment of the diffusion structure of the present application;

[0019] Figure 2 A schematic diagram of encapsulated particles in one embodiment of the diffusion structure of the present application;

[0020] Figure 3 A top view of a sensing layer in an embodiment of a diffusion structure of the present application;

[0021] Figure 4 A top view of a control layer in an embodiment of a diffusion structure of the present application;

[0022] Figure 5 It is a schematic diagram of an embodiment of the backlight module of the present application.

[0023] Among them, 10, backlight module; 100, diffusion structure; 200, light source; 110, sensing layer; 120, encapsulated particles; 121, first coil layer; 122, second coil layer; 123, channel; 124, shrinkage piece; 125, encapsulation layer; 126, first accommodating cavity; 127, phosphor; 128, second accommodating cavity; 130, first encapsulated particles; 140, second encapsulated particles; 150, third encapsulated particles; 160, control layer; 161, current controller; 162, power transmission coil; 163, first power transmission coil; 164, second power transmission coil; 165, third power transmission coil; 170, sensor. DETAILED DESCRIPTION

[0024] The present application is described in detail below with reference to the accompanying drawings and optional embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Figure 1 is a schematic diagram of an embodiment of the diffusion structure of the present application, Figure 2 This is a schematic diagram of encapsulated particles in one embodiment of the diffusion structure of the present application. Figure 3 This is a top view of the sensing layer in one embodiment of the diffusion structure of the present application. Figure 4 FIG. 1 is a top view of a control layer in an embodiment of a diffusion structure of the present application; Figures 1 to 4 As shown, the embodiment of the present application discloses a diffusion structure 100, including a sensing layer 110, a control layer 160 and a sensor 170, wherein the sensor 170 is electrically connected to the control layer 160; a plurality of encapsulated particles 120 are arranged in the sensing layer 110; the sensor 170 is used to detect and identify the light source color information of the light source 200, and transmit the detection signal to the control layer 160, the control layer 160 processes according to the detection signal, and controls the encapsulated particles 120 to switch between a first state, a second state and a third state; the encapsulated particles 120 display a preset single color in the first state, and reflect the light irradiated by the light source 200 in the second state; and display a preset combination color in the third state.

[0026] The present application replaces the diffusion sheet in the traditional backlight module 10 by setting a diffusion structure 100. When the light emitted by the light source 200 irradiates the diffusion structure 100, the sensor 170 detects and identifies the color information of the light source 200, and transmits the detection signal to the control layer 160. The control layer 160 processes the obtained detection signal. When the signal processed by the control layer 160 is lower than or higher than the preset standard, the control layer 160 controls the encapsulated particles 120 to display the preset color, so that the deviation color of the light source 200 can be compensated; when the signal processed by the control layer 160 meets the preset standard, the control layer 160 controls the encapsulated particles 120 to reflect or refract the light irradiated by the light source 200, so as to diffuse the light; that is, the present application utilizes the diffusion structure 100. The sensor 170 in the structure 100 identifies the color information of the light source 200, and processes the detection signal of the sensor 170 through the control layer 160, so as to control the packaged particles 120 to switch between the first state, the second state and the third state, and display a single color when the packaged particles 120 are in the first state to compensate for the low display of the corresponding color, and display a combined color when the packaged particles 120 are in the third state to compensate for the high display of the corresponding color by adjusting the color white; when the packaged particles 120 are in the second state, the diffusion structure 100 has the same light processing effect as the traditional diffusion film, so that the diffusion structure 100 can diffuse the light and compensate for the color deviation of the backlight source 200.

[0027] The sensor 170 may be a color sensor, which can detect and identify the color information of the light source in real time; the sensing layer 110 may be made of the same material as the diffusion sheet, that is, plastic.

[0028] Specifically, the light source color information includes color ratio, and the control layer 160 includes a current controller 161, which has a preset specification value built in; the sensor 170 transmits the color ratio signal to the current controller 161, and the current controller 161 processes the received color ratio signal to form a color deviation value, and compares it with the preset specification value; when the color deviation value is lower than the preset specification value, the current controller 161 controls the encapsulated particles 120 to be in a first state; when the color deviation value is equal to the preset specification value, the current controller 161 controls the encapsulated particles 120 to be in a second state; when the color deviation value is greater than the preset specification value, the current controller 161 controls multiple encapsulated particles 120 to be in a third state.

[0029] It should be noted that during the production process of display panels, the display color preference is generally set according to user needs, and the preset specification value in the current controller can be set according to user needs, but the display panels usually produced may have deviations in color display. For example, the actual displayed color concentration is lower than the color concentration of the preset specification value, or the actual displayed color concentration is higher than the color concentration of the preset specification value. In this case, the display color needs to be compensated.

[0030] Since the factor directly affecting the appropriate color of the light source 200 is the light emitted by the ratio of the light source chip and the phosphor 127, the accuracy of this ratio is particularly important to the quality of the light source 200. When the light source color information analyzed and identified by the sensor 170 is the color ratio of the light source 200, the color deviation of the light source 200 can be obtained more accurately.

[0031] Among them, the encapsulated particles 120 of the present application are in a first state, which can be understood as a state in which the encapsulated particles 120 display the corresponding color when the color deviation value is lower than the preset specification value, that is, the actual displayed color concentration is lower than the preset color concentration; the encapsulated particles 120 are in a second state, which can be understood as a state in which the encapsulated particles 120 do not display additional colors when the color deviation value is equal to the preset specification value, that is, the actual displayed color has no deviation from the preset display color; the encapsulated particles 120 are in a third state, which can be understood as a state in which multiple encapsulated particles 120 display other different color combinations when the color deviation value is greater than the preset specification value, that is, the actual displayed color concentration is higher than the preset color concentration.

[0032] Specifically, when the sensor 170 transmits the detected and identified color ratio signal to the control layer 160, it will be directly transmitted to the current controller 161 in the control layer 160. The current controller 161 has data processing and control functions. The current controller 161 will process the received color ratio signal and compare it with its built-in preset specification value to form a color deviation value. When the color deviation value is lower than the preset specification value, it means that there is a color deviation between the color of the light source 200 and the set standard. At this time, it is necessary to correct the color deviation of the light source 200. The current controller 161 converts the color deviation value into a current control signal and supplies power to the encapsulated particles 120 in the sensing layer 110. When the encapsulated particles 120 are energized, they will display a color corresponding to the deviation color, thereby compensating for the color deviation of the light source 200; for example: when the displayed red deviation value is lower than the preset specification value, the encapsulated particles 120 will display red for color supplementation; when other colors are displayed, the same applies.

[0033] When the color deviation value is equal to the preset specification value, it means that there is no color deviation between the color of the light source 200 and the set standard. At this time, there is no need to correct the color deviation of the light source 200. At this time, the current controller 161 will not supply power to the encapsulated particles 120 in the sensing layer 110, and the encapsulated particles 120 will reflect or refract the light irradiated by the light source 200 when not powered, which is similar to the processing effect of traditional diffusion particles on light. As a result, the diffusion structure 100 has the same light processing effect as a traditional diffusion sheet, so that the diffusion structure 100 can diffuse the light and compensate for the color deviation of the backlight source 200.

[0034] When the color deviation value is greater than the preset specification value, it means that the color of the light source 200 is higher than the set standard. At this time, it is necessary to correct the color deviation of the light source 200. The current controller 161 converts the color deviation value into a current control signal and supplies power to the multiple encapsulated particles 120 in the sensing layer 110. When the multiple encapsulated particles 120 are powered on, they will display a combination of colors different from the color with the deviation, thereby whitening and compensating the color deviation of the light source 200; for example: when the displayed color is reddish, the multiple encapsulated particles are respectively displayed in blue or green for whitening, thereby reducing the concentration of the red display and making it close to the preset specification value; when the displayed color is greenish, the multiple encapsulated particles 120 are respectively displayed in red and blue for whitening, thereby reducing the concentration of the green display and making it close to the preset specification value; when the displayed color is blueish, the multiple encapsulated particles 120 are respectively displayed in red and green for whitening, thereby reducing the concentration of the blue display and making it close to the preset specification value.

[0035] Furthermore, the encapsulated particle 120 includes a first coil layer 121, a second coil layer 122 and an encapsulation layer 125. The first coil layer 121 is made of a light-transmitting material, the encapsulation layer 125 is coated on the outside of the first coil layer 121, the second coil layer 122 is located on the inside of the first coil layer 121, and the second coil layer 122 and the first coil layer 121 are spaced apart to form a second accommodating cavity 128, and a first accommodating cavity 126 is formed in the second coil layer 122; the first accommodating cavity 126 is filled with a preset color of fluorescent powder 127. When the encapsulated particle 120 is in the first state or the third state, the encapsulation layer 125 is converted from an opaque state to a light-transmitting state, and the fluorescent powder 127 enters the second accommodating cavity 128 from the first accommodating cavity 126.

[0036] The encapsulated particles 120 in the present application may be spherical and divided into three layers, wherein the outermost layer is the encapsulation layer 125, followed by the first coil layer 121, and the innermost layer is the second coil layer 122, wherein the encapsulation layer 125 may be made of an electrochromic material, which changes from an opaque state to a translucent state when powered on.

[0037] When the control layer 160 supplies power to the encapsulated particles 120, the first coil layer 121 and the second coil layer 122 of the encapsulated particles 120 are powered. Since the encapsulation layer 125 is in contact with the first coil layer 121, when the first coil layer 121 is powered, the encapsulation layer 125 will be powered. After being powered, the encapsulation layer 125 will be converted from an opaque state to a translucent state. When the second coil layer 122 is powered, the phosphor 127 of a preset color wrapped in the second coil layer 122 will be released. At this time, the phosphor 127 enters the second accommodating cavity 128 from the first accommodating cavity 126, and is displayed as a preset color in the first accommodating cavity 126 under light irradiation. Since the encapsulation layer 125 and the first coil layer 121 are both in a translucent state at this time, the phosphor 127 in the second accommodating cavity 128 will not be blocked. In this way, the preset color displayed by the light-excited phosphor 127 can compensate for the deviation color of the light source 200.

[0038] When the control layer 160 does not supply power to the encapsulated particles 120, the encapsulation layer 125 becomes opaque, which can block the fluorescent powder 127 in the second coil layer 122, thereby not compensating the color of the light source 200, and is conducive to the refraction or reflection of light, so that the light can be diffused when it is irradiated on the encapsulated particles 120.

[0039] The size of the encapsulation particles 120 is similar to that of the diffusion particles, and is generally 2 μm to 10 μm.

[0040] Furthermore, a plurality of channels 123 are provided on the second coil layer 122 , and the channels 123 connect the first accommodating cavity 126 with the second accommodating cavity 128 ; a contraction piece 124 is provided in the channel 123 , and when the second coil layer 122 is energized, the contraction piece 124 controls the opening size of the channel 123 according to the current size of the second coil layer 122 .

[0041] In the present application, a plurality of channels 123 are provided on the second coil layer 122, and the first accommodating cavity 126 and the second accommodating cavity 128 are connected by the channels 123, so that the fluorescent powder 127 in the first accommodating cavity 126 can enter the second accommodating cavity 128 to be stimulated by light and display a preset color, thereby compensating for the color deviation of the light source 200.

[0042] When preparing the encapsulated particle 120, the second coil layer 122 can be prepared by etching, nano-connection and other methods, and then a cylindrical channel 123 is etched on the second coil layer 122 by track etching technology; the phosphor 127 is injected into the first accommodating cavity 126 formed by the second coil layer 122 through the channel 123, and then a shrinkage piece 124 of a conductive polymer material is introduced into the channel 123 by coating, electrochemical polymerization, physical adsorption or chemical bonding, and then the first coil layer 121 and the encapsulation layer 125 are encapsulated on the periphery of the second coil layer 122 to form a complete encapsulated particle 120.

[0043] In order to ensure that the preset color displayed by the fluorescent powder 127 in the second accommodating cavity 128 can just compensate for the color deviation of the light source 200, it is necessary to control the amount of fluorescent powder 127 in the first accommodating cavity 126 entering the second accommodating cavity 128 according to the actual color deviation value, and to match the corresponding amount of fluorescent powder 127 according to different color deviation values ​​to form a more appropriate color ratio and realize compensation and repair of the color of the light source 200.

[0044] Therefore, the present application sets a shrinking member 124 in the channel 123 and adjusts the size of the opening of the channel 123 through the shrinking member 124, thereby adjusting the amount of phosphor 127 entering from the first accommodating cavity 126 into the second accommodating cavity 128.

[0045] Among them, the shrinking piece 124 can be made of a conductive polymer material, and the shrinking piece 124 will shrink after receiving electricity, resulting in a size change; because the current controller 161 mainly converts the color deviation signal into a current control signal, the size of the color deviation signal corresponds to the size of the current, and the size of the current is related to the expansion and contraction of the shrinking piece 124, and the expansion and contraction of the shrinking piece 124 will directly affect the size of the channel 123, and the output of the fluorescent powder 127 is controlled by the size of the channel 123, and finally the output of the fluorescent powder 127 affects the color ratio again, so that through the cyclic detection of the sensor 170, under the control of the control layer 160, the preset requirements are met.

[0046] That is, the contraction or expansion of the contraction member 124 in this embodiment is precisely regulated according to the magnitude of the current. When the fluorescent powder 127 reaches the second accommodating cavity 128 after passing through the channel 123, it is excited by the light source 200 to compensate for the color difference. The sensor 170 detects the color ratio in real time, and the current controller 161 sends an electrical signal in real time, and the detection is cyclic until the color deviation of the light source 200 is repaired to normal.

[0047] Furthermore, the control layer 160 also includes a power transmission coil 162, and the current controller 161 is electrically connected to the power transmission coil 162; the current controller 161 converts the processed signal into an electrical signal and transmits it to the power transmission coil 162; the first coil layer 121 and the second coil layer 122 are respectively energized with the power transmission coil 162 through electromagnetic induction.

[0048] When the current controller 161 converts the color matching signal into a current control signal, the current control signal is transmitted to the power transmission coil 162. At this time, the power transmission coil 162 and the first coil layer 121 and the second coil layer 122 in the encapsulated particle 120 are energized by electromagnetic induction, so that the first coil layer 121 and the second coil layer 122 respectively control the encapsulation layer 125 to change from an opaque state to a translucent state when powered, and control the contraction part 124 in the channel 123 to release the opening size of the channel 123 according to the current size, thereby releasing an appropriate amount of phosphor 127.

[0049] It should be noted that in the present application, the power transmission coil 162, the first coil layer 121 and the second coil layer 122 are energized mainly through electromagnetic induction. When the power transmission coil 162 can generate an alternating magnetic field through an AC power supply, which is usually driven by voltage, the current induced by the first coil layer 121 and the second coil layer 122 is generated by the alternating magnetic field at the transmitting end, and this current will also generate a corresponding voltage due to the magnetic field.

[0050] Specifically, when the power transmission coil 162 is energized, an alternating magnetic field is generated. The alternating magnetic field propagates in space and can pass through the first coil layer 121 and the second coil layer 122. When the first coil layer 121 and the second coil layer 122 are located in the magnetic field of the power transmission coil 162, the alternating magnetic field induces current in the first coil layer 121 and the second coil layer 122, and the induced current can be used to power the load.

[0051] In layman's terms, the power transmission coil 162 receives electricity, and the electricity obtained by the power transmission coil 162 is transmitted to the first coil layer 121 through the air through the two coil magnetic fields of the power transmission coil 162 and the first coil layer 121, and then the electricity is sent to the packaging layer 125 through the first coil layer 121 for electrochromism, and its principle is similar to the current wireless charging of mobile phones; similarly, the power transmission coil 162 transmits electricity to the second coil layer 164 in the same way as mentioned above, and the second coil layer 164 transmits the electricity to the contraction part 124, and the contraction part 124 contracts after receiving the electricity.

[0052] When the encapsulated particles 120 are not energized, the outer surface of the encapsulation layer 125 is in a matte state, reflecting or refracting the light irradiated by the light source 200 .

[0053] When there is no need to precisely control the backlight color ratio, the function of the encapsulated particles 120 is the same as that of ordinary diffusion particles. When the light irradiated by the light source 200 enters the color sensor layer, since the encapsulation layer 125 of the outer layer of the encapsulated particles 120 is in a highly foggy and opaque state, the light propagates in media with different refractive indices to produce refraction, reflection, and scattering, forming an optical diffusion effect, thereby achieving the same effect as a traditional diffuser. That is, the present application only replaces the traditional diffuser with a diffusion structure 100, and at the same time has the same light diffusion function as the traditional diffuser, and the function of correcting the color deviation of the light source 200.

[0054] Specifically, the plurality of encapsulated particles 120 at least include a first encapsulated particle 130 , a second encapsulated particle 140 and a third encapsulated particle 150 , and the phosphors 127 in the first encapsulated particle 130 , the second encapsulated particle 140 and the third encapsulated particle 150 have different colors.

[0055] The present embodiment is different from the previous embodiment in that, in the present embodiment, at least three packaged particles 120 displaying different preset colors are provided in the sensing layer 110. By displaying different colors in pairs or individually among the at least three packaged particles 120 displaying different preset colors, correction of different color deviation values ​​can be achieved.

[0056] For example, the color of the phosphor 127 in the first encapsulated particle 130 is red, the color of the phosphor 127 in the second encapsulated particle 140 is green, and the color of the phosphor 127 in the third encapsulated particle 150 is blue;

[0057] When the actually displayed red deviation value is lower than the preset specification value, the current controller 161 will convert the detected color matching signal into a current control signal, control the first coil layer 121 and the second coil layer 122 in the first encapsulated particle 130 to be energized, so that the first coil layer 121 controls the encapsulation layer 125 of the first encapsulated particle 130 to change from an opaque state to a translucent state, and the second coil layer 122 controls the red phosphor 127 in the first accommodating cavity 126 in the first encapsulated particle 130 to enter the second accommodating cavity 128, and displays red under light excitation to compensate for the color deviation of the light source 200.

[0058] When the green deviation value actually displayed is lower than the preset specification value, the current controller 161 will convert the detected color matching signal into a current control signal, control the first coil layer 121 and the second coil layer 122 in the second encapsulated particle 140 to be energized, so that the first coil layer 121 of the second encapsulated particle 140 controls the encapsulation layer 125 to change from an opaque state to a translucent state, and the second coil layer 122 of the second encapsulated particle 140 controls the green phosphor 127 in the first accommodating cavity 126 to enter the second accommodating cavity 128, and displays green when excited by light to compensate for the color deviation of the light source 200.

[0059] When the actual displayed blue deviation value is lower than the preset specification value, the current controller 161 will convert the detected color matching signal into a current control signal, control the first coil layer 121 and the second coil layer 122 in the third encapsulated particle 150 to be energized, so that the first coil layer 121 of the third encapsulated particle 150 controls the encapsulation layer 125 to change from an opaque state to a translucent state, and the second coil layer 122 of the third encapsulated particle 150 controls the blue phosphor 127 in the first accommodating cavity 126 to enter the second accommodating cavity 128, and displays blue under light excitation to compensate for the color deviation of the light source 200.

[0060] When the actual color deviation value is higher than the preset specification value, for example, the display is reddish, greenish or bluish, it is only necessary to energize two packaged particles of the first packaged particles 130, the second packaged particles 140 and the third packaged particles 150 that are different from the actual deviation color, so that the other two different colors of packaged particles are mixed in different amounts and stimulated to display after being irradiated with light, and the color with deviation can be whitened to reduce the concentration of the color with deviation. In this way, the sensing layer 110 can display a single color or a combination of colors according to the actual color deviation to compensate for the color deviation of the light source 200, thereby improving the diversity and adaptability of the diffusion structure 100 in correcting the color of the light source 200.

[0061] Furthermore, the power transmission coil 162 includes a first power transmission coil 163, a second power transmission coil 164 and a third power transmission coil 165. The first power transmission coil 163 has the same frequency as the first coil layer 121 and the second coil layer 122 in the first encapsulation particle 130, the second power transmission coil 164 has the same frequency as the first coil layer 121 and the second coil layer 122 in the second encapsulation particle 140; the third power transmission coil 165 has the same frequency as the first coil layer 121 and the second coil layer 122 in the third encapsulation particle 150; the frequencies of the first power transmission coil 121, the second power transmission coil 122 and the third power transmission coil 165 are different from each other.

[0062] In this embodiment, since the first power transmission coil 163 has the same frequency as the first coil layer 121 and the second coil layer 122 in the first encapsulated particle 130, the second power transmission coil 164 has the same frequency as the first coil layer 121 and the second coil layer 122 in the second encapsulated particle 140; the third power transmission coil 165 has the same frequency as the first coil layer 121 and the second coil layer 122 in the third encapsulated particle 150, the first power transmission coil 163 can only generate electromagnetic induction with the coil in the first encapsulated particle 130, the second power transmission coil 164 can only generate electromagnetic induction with the coil in the second encapsulated particle 140, and the third power transmission coil 165 can only generate electromagnetic induction with the coil in the third encapsulated particle 150. The coil inside the third encapsulated particle 150 generates electromagnetic induction; that is, when the first power transmission coil 163 supplies power, only the first encapsulated particle 130 will display a preset color, while the second encapsulated particle 140 and the third encapsulated particle 150 will not receive power and display the preset color; when the second power transmission coil 164 supplies power, only the second encapsulated particle 140 will display a preset color, while the first encapsulated particle 130 and the third encapsulated particle 150 will not receive power and display the preset color; when the third power transmission coil 165 supplies power, only the third encapsulated particle 150 will display a preset color, while the first encapsulated particle 130 and the second encapsulated particle 140 will not receive power and display the preset color.

[0063] For example: when only the first packaged particle 130 is required to display red, when power is transmitted through the first power transmission coil 163, the first power transmission coil 163 will only generate electromagnetic induction with the first coil layer 121 and the second coil layer 122 in the first packaged particle 130, and the first coil layer 121 controls the package layer 125 of the first packaged particle 130 to change from an opaque state to a translucent state, and the second coil layer 122 controls the red phosphor 127 in the first accommodating cavity 126 to enter the second accommodating cavity 128, and is excited to display red under light irradiation, thereby compensating and correcting the color of the light source 200. The first coil layer 121 will not affect other packaged particles 120 to display colors other than red, thereby avoiding interference caused in the color compensation process and ensuring the stability of the diffusion structure 100 in correcting the color of the light source 200.

[0064] Furthermore, in this embodiment, the current controller 161 processes the received detection signal and outputs an electrical signal to at least one of the first power transmission coil 163 , the second power transmission coil 164 , and the third power transmission coil 165 .

[0065] Since the first power transmission coil 163, the second power transmission coil 164 and the third power transmission coil 165 respectively supply power to the first encapsulated particle 130, the second encapsulated particle 140 and the third encapsulated particle 150 according to the acquired current control signal, the first encapsulated particle 130, the second encapsulated particle 140 and the third encapsulated particle 150 respectively display their own preset colors to compensate for the color deviation of the light source 200. Therefore, when the current controller 161 inputs an electrical signal to at least one of the first power transmission coil 163, the second power transmission coil 164 and the third power transmission coil 165, the sensing layer 110 can display a single color or a combination of colors to compensate for the color deviation of the light source 200 according to the actual color deviation, thereby improving the diversity and adaptability of the diffusion structure 100 in correcting the color of the light source 200.

[0066] Figure 5 is a schematic diagram of an embodiment of the backlight module of the present application, such as Figure 5 As shown, the embodiment of the present application also discloses a backlight module 10, including a light source 200, and the backlight module 10 also includes the above-mentioned diffusion structure 100, and the diffusion structure 100 is arranged on one side of the light emitting surface of the light source 200. The light source 200 provides irradiation light for the entire backlight module 10, and when the light passes through the diffusion structure 100, the diffusion structure 100 can diffuse the light, so that the diffused light is irradiated more evenly.

[0067] It should be noted that the backlight module 10 of the present application may be an edge-type backlight module 10 or a direct-type backlight module 10 , and the present application does not impose any specific restrictions on the type of the backlight module 10 .

[0068] Since the light source 200 in the backlight module 10 generally has color deviation, and other components in the backlight module 10 generally can only adjust the light but cannot adjust the color of the backlight source 200, the color deviation problem cannot be fixed.

[0069] Based on the above problems, the present application improves the diffusion structure 100 in the backlight module 10. The present application replaces the diffusion sheet in the traditional backlight module 10 by setting the diffusion structure 100. When the light emitted by the light source 200 irradiates the diffusion structure 100, the sensor 170 detects and identifies the color information of the light source 200, and transmits the detection signal to the control layer 160. The control layer 160 processes the obtained detection signal. When the signal processed by the control layer 160 is lower than or higher than the preset standard, the control layer 160 controls the encapsulated particles 120 to display the preset color, so that the deviation color of the light source 200 can be compensated; when the signal processed by the control layer 160 meets the preset standard, the control layer 160 controls the encapsulated particles 120 to reflect or refract the light irradiated by the light source 200, so as to diffuse the light. That is, the present application utilizes the sensor 170 in the diffusion structure 100 to identify the color information of the light source 200, and processes the detection signal of the sensor 170 through the control layer 160, so as to control the packaged particles 120 to switch between the first state, the second state and the third state, and displays a single color in the first state by the packaged particles 120, and compensates for the low display of the corresponding color, and displays a combined color when the packaged particles 120 are in the third state, and compensates for the high display of the corresponding color by adjusting the color white; when the packaged particles 120 are in the second state, the diffusion structure 100 has the same light processing effect as a traditional diffusion sheet, so that the diffusion structure 100 can diffuse the light and compensate for the color deviation of the backlight source 200, thereby further improving the quality of the backlight module 10.

[0070] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0071] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A diffusion structure, characterized in that: It includes a sensing layer, a control layer and a sensor, wherein the sensor is electrically connected to the control layer; a plurality of encapsulated particles are arranged in the sensing layer; The sensor is used to detect and identify the light source color information of the light source, and transmit the detection signal to the control layer, and the control layer processes according to the detection signal and controls the encapsulated particles to switch between the first state, the second state and the third state; The encapsulated particles display a preset single color in the first state, reflect light irradiated by the light source in the second state, and display a preset combined color in the third state.

2. The diffusion structure according to claim 1, characterized in that The light source color information includes a color ratio, the control layer includes a current controller, and the current controller has a preset specification value built in; The sensor transmits the color matching signal to the current controller, and the current controller processes the received color matching signal to form a color deviation value and compares it with the preset specification value; When the color deviation value is lower than the preset specification value, the current controller controls the encapsulated particles to be in the first state; When the color deviation value is equal to the preset specification value, the current controller controls the encapsulated particles to be in the second state; When the color deviation value is greater than the preset specification value, the current controller controls the plurality of packaged particles to be in the third state.

3. The diffusion structure according to claim 2, characterized in that: The encapsulated particles include a first coil layer, a second coil layer and an encapsulation layer, the first coil layer is made of a light-transmitting material, the encapsulation layer is coated on the outside of the first coil layer, the second coil layer is located on the inside of the first coil layer, and the second coil layer is spaced apart from the first coil layer to form a second accommodating cavity, and the first accommodating cavity is formed in the second coil layer; The first receiving cavity is filled with fluorescent powder of a preset color. When the encapsulated particles are in the first state or the third state, the encapsulation layer is transformed from an opaque state to a translucent state, and the phosphor enters the second accommodating cavity from the first accommodating cavity.

4. The diffusion structure according to claim 3, characterized in that: The second coil layer is provided with a plurality of channels, and the channels connect the first accommodating cavity with the second accommodating cavity; A contraction piece is arranged in the channel. When the second coil layer is energized, the contraction piece controls the opening size of the channel according to the current size of the second coil layer.

5. The diffusion structure according to claim 4, characterized in that: The control layer further comprises a power transmission coil, and the current controller is electrically connected to the power transmission coil; The current controller converts the processed signal into an electrical signal and transmits it to the power transmission coil; the first coil layer and the second coil layer are respectively energized with the power transmission coil through electromagnetic induction.

6. The diffusion structure according to claim 5, characterized in that The plurality of encapsulated particles at least include a first encapsulated particle, a second encapsulated particle and a third encapsulated particle, and the phosphors in the first encapsulated particle, the second encapsulated particle and the third encapsulated particle have different colors.

7. The diffusion structure according to claim 6, characterized in that: The power transmission coil includes a first power transmission coil, a second power transmission coil and a third power transmission coil. The first power transmission coil has the same frequency as the first coil layer and the second limiting circle layer in the first encapsulated particle, the second power transmission coil has the same frequency as the first coil layer and the second coil layer in the second encapsulated particle; the third power transmission coil has the same frequency as the first coil layer and the second coil layer in the third encapsulated particle; The first power transmission coil, the second power transmission coil, and the third power transmission coil have different frequencies from each other.

8. The diffusion structure according to claim 7, characterized in that The current controller processes the received detection signal and outputs an electrical signal to at least one of the first power transmission coil, the second power transmission coil and the third power transmission coil.

9. The diffusion structure according to claim 1, characterized in that: When the encapsulated particles are not energized, the outer surface of the encapsulation layer is in a matte state, reflecting or refracting light irradiated by the light source.

10. A backlight module, comprising a light source, characterized in that: The backlight module further comprises a diffusion structure as claimed in any one of claims 1 to 9, wherein the diffusion structure is arranged on one side of the light emitting surface of the light source.

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