Light source structure and display device

Abstract

The invention provides a light source structure and a display device, the light source structure comprises a shell, a light-transmitting plate, at least two excitation chips and a light-emitting material, and the shell is provided with an accommodating groove; the light-transmitting plate seals the opening of the accommodating groove; the at least two excitation chips are arranged in the accommodating groove; the luminescent material is arranged on the at least two excitation chips; the luminescent material is used for emitting light with three colors of R, G and B under the action of the at least two excitation chips so as to mix the light; or, the light-emitting material is used for emitting light in one color of R, G and B under the action of the excitation chips so as to be mixed with the light in the other two colors of R, G and B emitted by the at least two excitation chips; or the luminescent material is used for emitting light in two colors of R, G and B under the action of the excitation chips, so that the light in the two colors of R, G and B is mixed with the light in the other color of R, G and B emitted by the at least two excitation chips. The light source structure and the display device can adjust white balance and improve the display effect.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular, relates to a light source structure and a display device. Background Art

[0002] With the continuous progress and innovation of display technology, users have higher and higher requirements for the display effects of display devices. White balance, as an important parameter of display effect, is an indicator used to describe the accuracy of white after the three primary colors of red, green and blue are mixed in the display. In current display devices, white light LEDs are generally used as backlight sources, and the white balance adjustment of white light LEDs directly affects the display effect of the display device. However, in existing displays, a single chip is used to excite the luminescent material to emit three colors of light, R, G, and B. It is not convenient to control the proportion of the three colors of light, R, G, and B, which leads to the limitation of the white balance adjustment of white light LEDs, which in turn affects the luminous display effect of the display device. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present application provides a light source structure and a display device that can improve the display effect.

[0004] In one aspect, the present application provides a light source structure, comprising:

[0005] A housing having a receiving groove;

[0006] A light-transmitting plate, which covers the housing and seals the opening of the receiving groove;

[0007] At least two excitation chips are disposed at the bottom of the containing groove; and

[0008] A luminescent material is disposed on one side of the opening of at least two of the excitation chips facing the receiving groove;

[0009] Wherein, the luminescent material is used to emit light of three colors of R, G, and B for mixing under the action of at least two of the excitation chips;

[0010] Alternatively, the luminescent material is used to emit light of a first color among R, G, and B under the action of the excitation chip, so as to be mixed with the second and third color lights of R, G, and B emitted by at least two of the excitation chips;

[0011] Alternatively, the luminescent material is used to emit a first and a second color of light among R, G, and B under the action of the excitation chip, so as to be mixed with a third color of light among R, G, and B emitted by at least two of the excitation chips.

[0012] In a possible embodiment, at least two of the excitation chips include a blue light chip and a green light chip, and the luminescent material includes red KSF phosphor; the blue light chip is used to output blue light, a portion of the blue light output by the blue light chip is used to excite the red KSF phosphor to form red light, another portion of the blue light output by the blue light chip is emitted from the light-transmitting plate, and the green light chip is used to output green light and emits from the light-transmitting plate.

[0013] In a possible implementation, the blue light chip includes a first chip and a second chip, the first chip is used to output blue light of a first band, a portion of the blue light output by the first chip is used to excite the red KSF phosphor to form red light, and another portion of the blue light output by the first chip is emitted from the light-transmitting plate; the second chip is used to output blue light of a second band, the blue light output by the second chip is emitted from the light-transmitting plate, and the first band is smaller than the second band.

[0014] In a possible embodiment, at least two of the excitation chips include a first chip and a second chip, and the luminescent materials include a first red KSF phosphor, a first green QD phosphor, a second red KSF phosphor and a second green QD phosphor; the first chip is used to output blue light of a first band, a portion of the blue light output by the first chip is used to excite the first red KSF phosphor to form red light, another portion of the blue light output by the first chip is used to excite the first green QD phosphor to form green light, and another portion of the blue light of the first chip is emitted from the light-transmitting plate; the second chip is used to output blue light of a second band, a portion of the blue light output by the second chip is used to excite the second red KSF phosphor to form red light, and another portion of the blue light output by the second chip is used to excite the second green QD phosphor to form green light; the first band is smaller than the second band.

[0015] In a possible embodiment, at least two of the excitation chips include a first chip and a second chip, and the luminescent material includes a red KSF phosphor and a green QD phosphor; the number of the first chips is two, and the number of the second chips is one; one of the first chips is used to output blue light of the first band to excite the red KSF phosphor to form red light, another of the first chips is used to output blue light of the first band to excite the green QD phosphor to form green light, and the second chip is used to output blue light of the second band and emit from the light-transmitting plate; or, the number of the first chips is one, and the number of the second chips is two; the first chip is used to output blue light of the first band and emit from the light-transmitting plate, one of the second chips is used to output blue light of the second band to excite the red KSF phosphor to form red light, and another of the second chips is used to output blue light of the second band to excite the green QD phosphor to form green light.

[0016] In a possible embodiment, at least two of the excitation chips include four purple light chips, and the luminescent materials include red KSF phosphor, green QD phosphor, first blue QD phosphor and second blue QD phosphor; among the four purple light chips, one purple light chip is used to excite the red KSF phosphor to form red light, one purple light chip is used to excite the green QD phosphor to form green light, one purple light chip is used to excite the first blue QD phosphor to form blue light of a first band, and one purple light chip is used to excite the second blue QD phosphor to form blue light of a second band; the first band is smaller than the second band.

[0017] In a possible embodiment, at least two of the excitation chips include a purple light chip and a blue light chip, the luminescent material includes a red KSF phosphor and a green QD phosphor, and the red KSF phosphor and the green QD phosphor are stacked; the purple light chip is used to excite the red KSF phosphor to form red light, and the blue light chip is used to output blue light, a portion of the blue light output by the blue light chip is emitted from the light-transmitting plate, and another portion of the blue light output by the blue light chip is used to excite the green QD phosphor to form green light.

[0018] In a possible embodiment, the blue light chip includes a first chip and a second chip, the first chip is used to output blue light of a first band, part of the blue light output by the first chip is used to excite the green QD phosphor to form green light, and another part of the blue light output by the first chip is emitted from the light-transmitting plate; the second chip is used to output blue light of a second band and emits from the light-transmitting plate, the first band being smaller than the second band.

[0019] On the other hand, the present application provides a display device, comprising:

[0020] The above light source structure; and

[0021] The optical structure is used to install the light source structure, and the light emitted by the light source structure is emitted through the optical structure.

[0022] In a possible embodiment, the optical structure includes a reflective layer, a light-guiding layer, a prism layer and a panel layer, and the reflective layer, the light-guiding layer, the prism layer and the panel layer are stacked in sequence; the light source structure is installed on the peripheral side of the light-guiding layer, and the light-emitting surface of the light source structure faces the light-guiding layer; or, the number of the light source structures is multiple; the optical structure includes a substrate, a reflective layer, a light-guiding layer, a prism layer and a panel layer, and the substrate, the reflective layer, the light-guiding layer, the prism layer and the panel layer are stacked in sequence; multiple light source structures are arranged in an array on the substrate A gap is formed on one side of the reflective layer, and the reflective layer is arranged in the gap; there is a gap between the reflective layer and the light source structure, a part of the light guide layer is arranged in the gap, another part of the light guide layer covers the light emitting surface of the light source structure facing away from the substrate, and another part of the light guide layer is stacked with the reflective layer; the light guide layer has a depression on the side away from the reflective layer, each of the depressions is arranged opposite to one of the light source structures in the stacking direction, a part of the prism layer is arranged in the depression, and another part of the prism layer is stacked with the light guide layer.

[0023] The light source structure provided in the present application emits light through at least two excitation chips and excites the luminescent material to emit light, so that the three colors of light, R, G, and B, are mixed to form white light, thereby realizing white balance adjustment of the light source structure. Since the number of excitation chips is at least two, each excitation chip can emit light and excite the luminescent material to emit light independently, and the parameters such as the luminous brightness of each color of the three colors of light, R, G, and B, can be adjusted. Therefore, by individually controlling each excitation chip to emit light and the luminescent material to emit light, the white balance of the light source structure is adjusted, which is beneficial to improving the luminous display effect of the light source structure. Moreover, by emitting light through at least two excitation chips and the luminescent material to emit light, the parameters such as the luminous brightness of each color of the three colors of light, R, G, and B, can be adjusted, so that the color gamut of the light source structure is wider, and the display needs of different display scenes can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some implementation methods provided by the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of a display device provided in one embodiment of the present application. Figure 1 ;

[0026] Figure 2is a schematic diagram of an optical path of a display device provided by an embodiment of the present application;

[0027] Figure 3 is a structural schematic diagram of another display device provided by an embodiment of the present application;

[0028] Figure 4 yes Figure 3 A local enlarged schematic diagram at point A;

[0029] Figure 5 is a cross-sectional view of a light source structure provided in the first embodiment of the present application;

[0030] Figure 6 is a front view of a light source structure provided in the first embodiment of the present application;

[0031] Figure 7 is a cross-sectional view of a light source structure provided in the second embodiment of the present application;

[0032] Figure 8 is a front view of a light source structure provided in the second embodiment of the present application;

[0033] Fig. 9 is a cross-sectional view of a light source structure provided in the third embodiment of the present application;

[0034] Fig.10 is a front view of a light source structure provided in the third embodiment of the present application;

[0035] Fig.11 is a cross-sectional view of a first light source structure provided in the fourth embodiment of the present application;

[0036] Fig.12 is a front view of a first light source structure provided in the fourth embodiment of the present application;

[0037] Fig.13 is a cross-sectional view of a second light source structure provided in the fourth embodiment of the present application;

[0038] Fig.14 is a front view of a second light source structure provided in the fourth embodiment of the present application;

[0039] Fig.15 is a cross-sectional view of a first light source structure provided in the fifth embodiment of the present application;

[0040] Fig.16 is a front view of a first light source structure provided in the fifth embodiment of the present application;

[0041] Fig.17 is a cross-sectional view of a second light source structure provided in the fifth embodiment of the present application;

[0042] Fig.18is a front view of the second light source structure provided in the fifth embodiment of the present application;

[0043] Fig.19 is a cross-sectional view of a light source structure provided in the sixth embodiment of the present application;

[0044] Fig. 20 is a front view of a light source structure provided in the sixth embodiment of the present application;

[0045] Fig.21 is a cross-sectional view of a light source structure provided in the seventh embodiment of the present application;

[0046] Fig. 22 It is a front view of a light source structure provided in the seventh embodiment of the present application.

[0047] Description of reference numerals:

[0048] Display device-1000, light source structure-100, shell-10, receiving groove-11, light-transmitting plate-30, excitation chip-50, blue light chip-51, first chip-511, second chip-512, green light chip-53, purple light chip-55, luminescent material-70, red KSF phosphor-71, first red KSF phosphor-72, first green QD phosphor-73, second red KSF phosphor-74, second green QD phosphor-75, green QD phosphor-76, first blue QD phosphor-77, second blue QD phosphor-78, blue QD phosphor Powder-79, optical structure-200, reflective layer-201, light guiding layer-202, prism layer-203, groove-2031, curved surface-2032, annular portion-2033, first protrusion-2034, second protrusion-2035, panel layer-204, first polarizer-2041, thin film transistor-2042, color filter-2043, second polarizer-2044, first beam shaper-2045, first prism-2046, second prism-2047, second beam shaper-2048, liquid crystal panel-2049, support member-205, substrate-206. DETAILED DESCRIPTION

[0049] The technical solution of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described implementation methods are only part of the implementation methods of the present application, rather than all the implementation methods. Based on the implementation methods in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0050] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The directional terms mentioned in the description of the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "top", "side", "bottom", "top wall", "side wall", "bottom wall", "inner side wall", "outer side wall", "length direction", "width direction", "height direction", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, for example, "first", "second", "third", "fourth", etc., are only used to distinguish the objects described and do not have any order or technical meaning. In the description of the present application, the "connection" and "connection" involved, if not otherwise specified, include direct connection (connection) and indirect connection (connection).

[0051] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a display device provided in one embodiment of the present application. Figure 1 , Figure 2 It is a schematic diagram of a light path of a display device provided in one embodiment of the present application.

[0052] The display device 1000 provided in the present application includes a light source structure 100 and an optical structure 200. The light source structure 100 is installed on the optical structure 200. The light source structure 100 is used to emit light, and the optical structure 200 is used to conduct light. The light emitted by the light source structure 100 is emitted through the optical structure 200. Figure 2 The line indicated by the arrow in the middle is the optical path.

[0053] In this embodiment, the display device 1000 is an edge-entry display device 1000, that is, the light source structure 100 is installed on any side of the circumferential direction of the optical structure 200. The optical structure 200 includes a reflective layer 201, a light guide layer 202, a prism layer 203 and a panel layer 204. The reflective layer 201, the light guide layer 202, the prism layer 203 and the panel layer 204 are stacked in sequence. The light source structure 100 is installed on any side of the circumferential direction of the light guide layer 202 around the stacking direction, and the light emitting surface of the light source structure 100 is arranged facing the light guide layer 202. The light emitted by the light source structure 100 enters the prism layer 203 after being reflected by the reflective layer 201 and conducted by the light guide layer 202, and finally exits from the side of the panel layer 204 facing away from the prism layer 203. Among them, the panel layer 204 is a liquid crystal display panel. The display device 1000 provided in this embodiment can reduce the number of light source structures 100 used by installing the light source structure 100 on the peripheral side of the optical structure 200. The fewer the number of light source structures 100 used, the lower the cost of the light source structure 100, thereby reducing the cost of the display device 1000. By installing the light source structure 100 on the peripheral side of the optical structure 200, it is possible to avoid the light source structure 100 affecting the thickness of the display device 1000, so that the thickness of the display device 1000 in the stacking direction can be made smaller, which is convenient for the display device 1000 to achieve a light and thin design. It can be understood that the number of light source structures 100 can be multiple, and the multiple light source structures 100 are all installed on any one or more sides of the circumferential direction of the light guide layer 202 around the stacking direction, and this application does not limit this.

[0054] In a specific embodiment, the display device 1000 provided in this embodiment further includes a support 205, and the panel layer 204 includes a first polarizer 2041, a thin film transistor 2042, a color filter 2043, and a second polarizer 2044. The support 205, the reflective layer 201, the light guide layer 202, the prism layer 203, the first polarizer 2041, the thin film transistor 2042, the color filter 2043, and the second polarizer 2044 are stacked in sequence. Among them, the reflective layer 201 is a reflective glass used to reflect the light emitted by the light source structure 100. The light guide layer 202 is a light guide plate, and the light source structure 100 is Gaussian scattered by the light guide plate. The light is converged and concentrated, which can effectively converge the light type, improve the brightness of the display device 1000, and reduce the power consumption of the display device 1000. The prism layer 203 is a turning prism, which is used to change the optical path of light, so that part of the light is transmitted and part of the light is refracted, so as to converge the light and make the brightness of the display device 1000 more uniform. It can be understood that in some other embodiments, the panel layer 204 can be stacked by other optical films, and the present application does not limit this.

[0055] Among them, the light guide plate can be designed with a special dot structure to improve the scattering ability and light energy utilization of the light guide plate. This light guide plate optimizes the scattering effect of light by adjusting the shape, size and arrangement of the dots, thereby achieving more uniform light output and higher brightness. The special dot structure usually includes different inclination angles and arrangements to meet different application requirements.

[0056] In some embodiments, a light sensor can be added to the surface of the color filter 2043 of the panel layer 204 to enable the display device 1000 to achieve touch control. At the same time, compared with traditional display devices, through the setting of the light sensor, the light sensor can detect the intensity and brightness of the ambient light, and automatically adjust the display brightness of the display device 100 according to the detection results to adapt to different lighting environments. When the ambient light is dark, the light sensor will reduce the display brightness of the display device 100 to prevent the display device 100 from being too bright and causing damage to the eyes. In a brighter environment, the light sensor will increase the display brightness of the display device 100 to ensure a clear display effect. As a result, the problems of uneven display brightness and display traces caused by blue light mura on the side of the display device 1000 can be reduced, and an additional layered structure is no longer required to solve the problem of display brightness of the display device 1000, and the thickness of the display device 1000 can be made thinner, which is not limited by the present application.

[0057] See also Figure 3 and Figure 4 , Figure 3 is a schematic structural diagram of another display device provided by an embodiment of the present application, Figure 4 yes Figure 3 A local enlarged schematic diagram at point A.

[0058] The display device 1000 provided in the present application includes a light source structure 100 and an optical structure 200 . The light source structure 100 is installed on the optical structure 200 . The light source structure 100 is used to emit light, and the optical structure 200 is used to conduct light. The light emitted by the light source structure 100 is emitted through the optical structure 200 .

[0059] In this embodiment, the display device 1000 is a direct-type display device 1000, that is, the light source structure 100 is installed on one side of the stacking direction of the optical structure 200. There are multiple light source structures 100, and the optical structure 200 includes a reflective layer 201, a light guide layer 202, a prism layer 203, a panel layer 204 and a substrate 206. The substrate 206, the reflective layer 201, the light guide layer 202, the prism layer 203 and the panel layer 204 are stacked in sequence. Multiple light source structures 100 are arranged in an array on one side of the substrate 206 facing the reflective layer 201 and form a gap, and the reflective layer 201 is arranged in the gap formed by the multiple light source structures 100. There is a gap between the reflective layer 201 and the light source structure 100, a part of the light guide layer 202 is arranged in the gap formed by the reflective layer 201 and the light source structure 100, another part of the light guide layer 202 covers the light emitting surface of the light source structure 100 facing away from the substrate 206, and another part of the light guide layer 202 is stacked with the reflective layer 201. The light guide layer 202 has a depression on the side away from the reflective layer 201, and each depression is arranged opposite to a light source structure 100 in the stacking direction. Part of the prism layer 203 is arranged in the depression, and another part of the prism layer 203 is stacked with the light guide layer 202. A direct-type display device 1000 is formed by installing multiple light source structures 100 on one side of the stacking direction of the optical structure 200, and each light source structure 100 can directly illuminate the corresponding area of ​​the display device 1000, so that the display device 1000 can achieve regional light control, thereby improving the contrast and color expression of the display device 1000. Moreover, compared with the conventional blue light+QD+light uniformity film+BEF method, the display device 1000 provided in this embodiment can reduce the film thickness and improve the picture halo.

[0060] In a specific embodiment, the panel layer 204 includes a first beam shaper 2045, a first prism 2046, a second prism 2047, a second beam shaper 2048 and a liquid crystal panel 2049 which are stacked in sequence, and the first beam shaper 2045 is also stacked with the prism layer 203. It can be understood that in some other embodiments, the panel layer 204 can be stacked with other optical films, and the present application does not limit this.

[0061] In a specific embodiment, the side of the prism layer 203 facing away from the light guide layer 202 has a plurality of grooves 2031 arranged in an array, and each groove 2031 is arranged opposite to a light source structure 100 in the stacking direction. Each groove 2031 has a plurality of arc surfaces 2032 connected to the inner side wall of the groove 2031, and the arc surfaces 2032 are arranged protrudingly along the direction of the prism layer 203 facing away from the light guide layer 202. The number of the arc surfaces 2032 includes but is not limited to 3, 4, 5, etc., and the present application does not impose any restrictions on this. A plurality of arc surfaces 2032 are arranged to form the above-mentioned groove 2031, and each groove 2031 is provided with an annular portion 2033, and the cross-sectional size of the annular portion 2033 along the direction of the prism layer 203 facing away from the light guide layer 202 gradually decreases, and the end of the annular portion 2033 facing away from the bottom wall of the groove 2031 is spaced from the arc surface 2032. Each annular portion 2033 has an inner cavity, and a first protrusion 2034 is also disposed in the inner cavity formed by each annular portion 2033. The cross-sectional size of the first protrusion 2034 gradually decreases along the direction of the prism layer 203 facing away from the light guide layer 202, and one end of the first protrusion 2034 away from the bottom wall of the groove 2031 is spaced from the inner side wall of the annular portion 2033. The prism layer 203 has a plurality of second protrusions 2035 arranged in an array on the side facing the light guide layer 202, and the cross-sectional area of ​​the second protrusions 2035 gradually decreases along the direction of the prism layer 203 facing the light guide layer 202, and each second protrusion 2035 is disposed opposite to a first protrusion 2034 in the stacking direction. By arranging the arc surface 2032, the annular portion 2033 and the first protrusion 2034 in the groove 2031 on one side of the prism layer 203, and arranging the second protrusion 2035 on the other side of the prism layer 203, the light source structure 100, the second protrusion 2035 and the first protrusion 2034 are arranged opposite to each other along the stacking direction, and the light emitted by the light source structure 100 is converged after being reflected and refracted by the second protrusion 2035, the annular portion 2033 and the first protrusion 2034, and by arranging multiple second protrusions 2035, multiple annular portions 2033 and multiple first protrusions 2034, the light emitted by the light source structure 100 forms a surface light source with higher collimation after passing through the prism layer 203. Moreover, through the above-mentioned design of the prism layer 203, the luminous intensity of the centrally gathered light can be dispersed by refraction, so that the light emitted by the light source structure 100 forms a surface light source with more uniform surface brightness after passing through the prism layer 203. The display device 1000 provided in this embodiment, the light emitted by the light source structure 100 is more converged and concentrated after being reflected and refracted by the second protrusion 2035, the annular portion 2033 and the first protrusion 2034, which can reduce the possibility of light leakage from the peripheral side of the display device 1000, and can effectively solve the problem of blue light leakage. In addition, the display device 1000 has good picture uniformity, high display brightness and low power consumption.

[0062] It is understandable that in some other embodiments, a plurality of annular portions 2033 may be provided in each groove 2031, and the present application does not limit this. In some other embodiments, the second protrusion 2035 and the first protrusion 2034 may be staggered in the stacking direction, and the present application does not limit this.

[0063] See also Figures 1 to 6 , Figure 5 is a cross-sectional view of a light source structure provided in the first embodiment of the present application, Figure 6 It is a front view of a light source structure provided in the first embodiment of the present application.

[0064] The light source structure 100 provided in this embodiment can be applied to any of the above-mentioned display devices 1000 or other display devices 1000, and the present application does not limit this. The light source structure 100 provided in this embodiment includes a shell 10, a light-transmitting plate 30, at least two excitation chips 50 and a luminescent material 70, and the shell 10 has a receiving groove 11. The light-transmitting plate 30 is configured to cover the shell 10 and seal the opening of the receiving groove 11. The excitation chips 50 are all arranged in the receiving groove 11, and the excitation chips 50 are located at the bottom of the receiving groove 11. The luminescent material 70 is arranged in the receiving groove 11, and the luminescent material 70 is arranged on the side of the opening of the receiving groove 11 of at least two excitation chips 50. Among them, the luminescent material 70 is used to emit three colors of light of R, G, and B for mixing under the action of at least two excitation chips 50. Alternatively, the luminescent material 70 is used to emit light of the first color among R, G, and B under the action of the excitation chip 50, so as to mix with the second and third color lights of R, G, and B emitted by at least two excitation chips 50. Alternatively, the luminescent material 70 is used to emit light of the first and second color among R, G, and B under the action of the excitation chip 50, so as to mix with the third color light of R, G, and B emitted by at least two excitation chips 50.

[0065] The light source structure 100 provided in this embodiment emits light through at least two excitation chips 50 and excites the luminescent material 70 to emit light, so that the three colors of light R, G, and B are mixed to form white light, thereby realizing the white balance adjustment of the light source structure 100. Since the number of the excitation chips 50 is at least two, each excitation chip 50 can emit light independently and excite the luminescent material 70 to emit light, and the parameters such as the luminous brightness of each color of the three colors of light R, G, and B can be adjusted. Therefore, by individually controlling each excitation chip 50 to emit light and the luminescent material 70 to emit light, the white balance of the light source structure 100 is adjusted, which is conducive to reducing the power consumption of the light source structure 100 and improving the luminous display effect of the light source structure 100. Moreover, by emitting light through at least two excitation chips 50 and exciting the luminescent material 70 to emit light, the parameters such as the luminous brightness of each color of the three colors of light R, G, and B can be adjusted, so that the color gamut of the light source structure 100 is wider and the degree of switchability is higher, so that the display needs of different display scenes can be realized.

[0066] It is understandable that in some other embodiments, the display device 1000 uses a quantum dot light emitting diode (QLED) or a perovskite light emitting diode (PeLED) to replace the light emitting material 70. In this case, no additional panel design is required in the display device 1000 to serve as a display pixel of the display device 1000, and the present application does not impose any restrictions on this.

[0067] See also Figure 5 and Figure 6 In the first embodiment of the present application, in the light source structure 100, at least two excitation chips 50 include a blue chip 51 and a green chip 53, and the luminescent material 70 includes a red KSF phosphor 71. The blue chip 51 and the green chip 53 are arranged in the receiving groove 11 and are located at the bottom of the receiving groove 11. The blue chip 51 and the green chip 53 are arranged opposite to each other in a direction parallel to the bottom of the receiving groove 11. The red KSF phosphor 71 covers the blue chip 51 and the green chip 53 and is arranged parallel to the bottom of the receiving groove 11. The blue chip 51 is used to output blue light, and a part of the blue light output by the blue chip 51 is used to excite the red KSF phosphor 71 to form red light, and another part of the blue light output by the blue chip 51 is emitted from the light-transmitting plate 30, and the green chip 53 is used to output green light and emit from the light-transmitting plate 30. Thus, mixed light of three colors of R, G, and B can be emitted from the light-transmitting plate 30.

[0068] The light source structure 100 provided in the first embodiment of the present application outputs blue light through the blue light chip 51. Part of the blue light output by the blue light chip 51 excites the red KSF phosphor 71 to emit red light and is emitted from the light-transmitting plate 30. Another part of the blue light output by the blue light chip 51 is directly emitted from the light-transmitting plate 30. The green light chip 53 outputs green light and is emitted from the light-transmitting plate 30 to form a mixed light of three colors R, G, and B. By respectively controlling the parameters of the blue light output by the blue light chip 51 and the parameters of the green light output by the green light chip 53, the proportions of the three colors of light R, G, and B in the mixed light of the three colors R, G, and B are changed, respectively, so as to realize the white balance adjustment of the light source structure 100, which is beneficial to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and can meet the display needs of different display scenes.

[0069] Furthermore, in the light source structure 100 provided in the first embodiment of the present application, the housing 10 has two groups of electrodes, the two groups of electrodes penetrate the bottom wall of the accommodating groove 11, one group of electrodes is electrically connected to the blue light chip 51, and the other group of electrodes is electrically connected to the green light chip 53. Thus, independent light emission control of the blue light chip 51 and the green light chip 53 can be achieved, which facilitates the light source structure 100 to achieve white balance adjustment.

[0070] It should be understood that since the color purity of the red KSF phosphor 71 (K2SiF6:Mn4+) is higher than that of the red QD phosphor, the peak value of the red light output by the red KSF phosphor 71 after being excited is narrower (smaller PWHM), and the red KSF phosphor 71 is more stable than the red QD phosphor, the present application prefers that the luminescent material 70 is the red KSF phosphor 71. Of course, in some other embodiments, other types of luminescent materials can be selected as needed, and the present application does not limit this. Among them, a small PWHM means that the peak is very sharp, the data is concentrated and the accuracy is high. On the contrary, if the PWHM is large, it means that the peak is wide, the data distribution range is wide and the accuracy is low.

[0071] Exemplarily, for the white balance adjustment of the light source structure 100, the blue light chip 51 can be controlled to output blue light with a peak value in the 455-460nm band to excite the red KSF phosphor 71, so that the red KSF phosphor 71 outputs red light with a peak value of 630nm and a PWHM of 25, and the green light chip 53 can be controlled to output green light with a peak value of 530nm and a PWHM of 30, so that the blue light output by the blue light chip 51, the red light output by the red KSF phosphor 71, and the green light output by the green light chip 53 are mixed at the light-transmitting plate 30 to form white light, so as to achieve the white balance adjustment of the light source structure 100.

[0072] See also Figure 7 and Figure 8 , Figure 7is a cross-sectional view of a light source structure provided in the second embodiment of the present application, Figure 8 It is a front view of a light source structure provided in the second embodiment of the present application.

[0073] The light source structure 100 provided in the second embodiment of the present application is substantially the same as the light source structure 100 provided in the first embodiment of the present application, except that the blue light chip 51 in the light source structure 100 provided in the second embodiment of the present application includes a first chip 511 and a second chip 512. The first chip 511, the second chip 512 and the green light chip 53 are all arranged in the receiving groove 11 and at the bottom of the receiving groove 11, and the first chip 511, the second chip 512 and the green light chip 53 are arranged along a plane parallel to the bottom of the receiving groove 11. The red KSF phosphor 71 covers the blue light chip 51 and the green light chip 53 and is arranged parallel to the bottom of the receiving groove 11. The first chip 511 is used to output blue light of the first band, a part of the blue light output by the first chip 511 is used to excite the red KSF phosphor 71 to form red light and emit from the light-transmitting plate 30, and another part of the blue light output by the first chip 511 is emitted from the light-transmitting plate 30. The second chip 512 is used to output blue light of the second wavelength band, and the blue light output by the second chip 512 is emitted from the light-transmitting plate 30. The first wavelength band is smaller than the second wavelength band. The green light chip 53 is used to output green light and is emitted from the light-transmitting plate 30. Thus, mixed light of three colors of R, G, and B can be emitted from the light-transmitting plate 30.

[0074] The light source structure 100 provided in the second embodiment of the present application outputs blue light of the first band through the first chip 511. Part of the blue light output by the first chip 511 excites the red KSF phosphor 71 to emit red light and is emitted from the light-transmitting plate 30. Another part of the blue light output by the first chip 511 is directly emitted from the light-transmitting plate 30. The blue light of the second band output by the second chip 512 is directly emitted from the light-transmitting plate 30. The green light chip 53 outputs green light and is emitted from the light-transmitting plate 30 to form a mixed light of three colors of R, G, and B. By respectively controlling the parameters of the blue light of the first band output by the first chip 511, the parameters of the blue light of the second band output by the second chip 512, and the parameters of the green light chip 53 to output green light, the proportions of the three colors of R, G, and B in the mixed light of the three colors of R, G, and B are changed, respectively, so as to realize the white balance adjustment of the light source structure 100, which is beneficial to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and can meet the display needs of different display scenes. At the same time, since the blue light output by the first chip 511 is the blue light of the first wavelength band, the blue light output by the second chip 512 is the blue light of the second wavelength band, and the first wavelength band is smaller than the second wavelength band, that is, the wavelength of the blue light output by the first chip 511 is smaller than the wavelength of the blue light output by the second chip 512. By controlling the parameters of the blue light of the first wavelength band output by the first chip 511 and the parameters of the blue light of the second wavelength band output by the second chip 512, respectively, the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30 is controlled to achieve the rhythmic regulation of the light source structure 100, which is conducive to improving the comprehensive luminous display effect of the light source structure 100. Moreover, by controlling the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30, the contact time of the blue light of the first wavelength band (short wave) output by the first chip 511 with the human eye can be controlled, thereby reducing the blue light emitted by the light source structure 100 that is harmful to the human eye.

[0075] Furthermore, in the light source structure 100 provided in the second embodiment of the present application, the housing 10 has three groups of electrodes, the three groups of electrodes penetrate the bottom wall of the accommodating groove 11, one group of electrodes is electrically connected to the first chip 511, another group of electrodes is electrically connected to the second chip 512, and another group of electrodes is electrically connected to the green chip 53. Thus, independent light emission control of the first chip 511, the second chip 512 and the green chip 53 can be achieved, which facilitates the light source structure 100 to achieve white balance adjustment and rhythm adjustment.

[0076] Exemplarily, for the white balance adjustment of the light source structure 100, the first chip 511 can be controlled to output short-wave blue light with a peak value in the 455-460nm band to excite the red KSF phosphor 71, so that the red KSF phosphor 71 outputs red light with a peak value of 630nm and a PWHM of 25, and the green light chip 53 is controlled to output green light with a peak value of 530nm and a PWHM of 30, so that the first-band blue light output by the first chip 511, the red light output by the red KSF phosphor 71, and the green light output by the green light chip 53 are mixed at the light-transmitting plate 30 to form white light, so as to achieve the white balance adjustment of the light source structure 100.

[0077] Exemplarily, for the rhythmic regulation of the light source structure 100, on the basis of the adjustment of the white balance of the light source, it is additionally performed to control the second chip 512 to output long-wave blue light with a peak in the 478-483nm band, and then control the parameters of the blue light of the first band output by the first chip 511 and the parameters of the blue light of the second band output by the second chip 512 respectively, so as to control the relative proportion of the blue light of the first band and the blue light of the second band emitted from the light-transmitting plate 30, so as to realize the rhythmic regulation of the light source structure 100.

[0078] See also Figures 9 and 10 , Fig. 9 is a cross-sectional view of a light source structure provided in the third embodiment of the present application, Fig.10 It is a front view of a light source structure provided in the third embodiment of the present application.

[0079] The light source structure 100 provided in the third embodiment of the present application is substantially the same as the light source structure 100 provided in the first embodiment of the present application, except that at least two excitation chips 50 in the light source structure 100 provided in the third embodiment of the present application only include a first chip 511 and a second chip 512, and the luminescent material 70 includes a first red KSF phosphor 72, a first green QD phosphor 73, a second red KSF phosphor 74, and a second green QD phosphor 75. The first chip 511 and the second chip 512 are disposed in the receiving groove 11 and are located at the bottom of the receiving groove 11, and the first chip 511 and the second chip 512 are disposed relatively to each other along a direction parallel to the bottom of the receiving groove 11. The first red KSF phosphor 72, the first green QD phosphor 73, the second red KSF phosphor 74 and the second green QD phosphor 75 are arranged along a plane parallel to the bottom of the receiving groove 11. The first red KSF phosphor 72 and the first green QD phosphor 73 are covered on the first chip 511 and are arranged parallel to the bottom of the receiving groove 11. The second red KSF phosphor 74 and the second green QD phosphor 75 are covered on the second chip 512 and are arranged parallel to the bottom of the receiving groove 11. The first chip 511 is used to output blue light of the first wavelength band. A part of the blue light output by the first chip 511 is used to excite the first red KSF phosphor 72 to form red light. Another part of the blue light output by the first chip 511 is used to excite the first green QD phosphor 73 to form green light. Another part of the blue light of the first chip 511 is emitted from the light-transmitting plate 30. The second chip 512 is used to output blue light of the second wavelength band. A portion of the blue light output by the second chip 512 is used to excite the second red KSF phosphor 74 to form red light, and another portion of the blue light output by the second chip 512 is used to excite the second green QD phosphor 75 to form green light. The first wavelength band is smaller than the second wavelength band. Thus, mixed light of the three colors of R, G, and B can be emitted from the light-transmitting plate 30.

[0080] The light source structure 100 provided in the third embodiment of the present application outputs blue light of the first band through the first chip 511, a part of the blue light output by the first chip 511 excites the first red KSF phosphor 72 to emit red light and is emitted from the light-transmitting plate 30, another part of the blue light output by the first chip 511 excites the first green QD phosphor 73, another part of the blue light output by the first chip 511 is directly emitted from the light-transmitting plate 30, the second chip 512 outputs blue light of the second band, a part of the blue light output by the second chip 512 excites the first red KSF phosphor 72 to emit red light and is emitted from the light-transmitting plate 30, and another part of the blue light output by the second chip 512 excites the first green QD phosphor 73. The second green QD phosphor 75 is emitted, and another part of the blue light output by the second chip 512 is directly emitted from the light-transmitting plate 30 to form a mixed light of three colors of R, G, and B at the light-transmitting plate 30. By respectively controlling the parameters of the blue light of the first band output by the first chip 511 and the parameters of the blue light of the second band output by the second chip 512 to change the proportion of the three colors of R, G, and B in the mixed light of the three colors of R, G, and B, respectively, the white balance adjustment of the light source structure 100 is achieved, which is conducive to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and can meet the display needs of different display scenes. At the same time, since the blue light output by the first chip 511 is the blue light of the first band, the blue light output by the second chip 512 is the blue light of the second band, and the first band is smaller than the second band, that is, the wavelength of the blue light output by the first chip 511 is smaller than the wavelength of the blue light output by the second chip 512. By respectively controlling the parameters of the blue light of the first wavelength band output by the first chip 511 and the parameters of the blue light of the second wavelength band output by the second chip 512, the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30 is controlled to achieve the rhythmic regulation of the light source structure 100, which is beneficial to improving the comprehensive luminous display effect of the light source structure 100. Moreover, by controlling the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30, the contact time of the blue light of the first wavelength band (short wave) output by the first chip 511 with the human eye can be controlled, thereby reducing the blue light emitted by the light source structure 100 that is harmful to the human eye.

[0081] Furthermore, in the light source structure 100 provided in the third embodiment of the present application, the housing 10 has two groups of electrodes, the two groups of electrodes penetrate the bottom wall of the accommodating groove 11, one group of electrodes is electrically connected to the first chip 511, and the other group of electrodes is electrically connected to the second chip 512. Thus, independent light emission control of the first chip 511 and the second chip 512 can be achieved, which facilitates the light source structure 100 to achieve white balance adjustment and rhythm adjustment.

[0082] See also Figure 11 to Figure 12 , Fig.11 is a cross-sectional view of a first light source structure provided in the fourth embodiment of the present application, Fig.12It is a front view of the first light source structure provided in the fourth embodiment of the present application.

[0083] The first light source structure 100 provided in the fourth embodiment of the present application is substantially the same as the light source structure 100 provided in the first embodiment of the present application, except that the fourth embodiment of the present application provides a light source structure 100 in which at least two excitation chips 50 include a first chip 511 and a second chip 512, and the luminescent material 70 includes a red KSF phosphor 71 and a green QD phosphor 76. Among them, the number of the first chips 511 is two, and the number of the second chip 512 is one. The two first chips 511 and the one second chip 512 are both disposed in the receiving groove 11 and located at the bottom of the receiving groove 11, the two first chips 511 and the one second chip 512 are arranged along a plane parallel to the bottom of the receiving groove 11, and the second chip 512 is disposed between the two first chips 511. The red KSF phosphor 71 is covered on one first chip 511 and arranged parallel to the bottom of the receiving groove 11. The green QD phosphor 76 is covered on another first chip 511 and arranged parallel to the bottom of the receiving groove 11. The red KSF phosphor 71 and the green QD phosphor 76 are spaced apart, that is, the second chip 512 is not covered with the red KSF phosphor 71 or the green QD phosphor 76. One first chip 511 is used to output blue light of the first wavelength band. Part of the blue light output by the first chip 511 is used to excite the red KSF phosphor 71 to form red light. The other part of the blue light output by the first chip 511 is emitted from the light-transmitting plate 30. Another first chip 511 is used to output blue light of the first wavelength band. Part of the blue light output by the first chip 511 is used to excite the green QD phosphor 76 to form green light. The other part of the blue light output by the first chip 511 is emitted from the light-transmitting plate 30. The second chip 512 is used to output blue light of the second wavelength band and is emitted from the light-transmitting plate 30. Thus, mixed light of three colors, R, G, and B, can be emitted from the light-transmitting plate 30 .

[0084] The first light source structure 100 provided in the fourth embodiment of the present application outputs blue light of the first band through a first chip 511. Part of the blue light output by the first chip 511 excites the red KSF phosphor 71 to form red light, and another part of the blue light output by the first chip 511 is emitted from the light-transmitting plate 30. Another first chip 511 outputs blue light of the first band, and part of the blue light output by the first chip 511 is used to excite the green QD phosphor 76 to form green light. Another part of the blue light output by the first chip 511 is emitted from the light-transmitting plate 30. The second chip 512 is used to output blue light of the second band and emit it from the light-transmitting plate 30 to form a mixed light of three colors of R, G, and B. By respectively controlling the parameters of the blue light of the first band output by the two first chips 511 and the parameters of the blue light of the second band output by the second chip 512, the proportions of the three colors of R, G, and B in the mixed light of the three colors of R, G, and B are changed, respectively, so as to realize the white balance adjustment of the light source structure 100, which is beneficial to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and can meet the display needs of different display scenes. At the same time, since the blue light output by the first chip 511 is the blue light of the first wavelength band, the blue light output by the second chip 512 is the blue light of the second wavelength band, and the first wavelength band is smaller than the second wavelength band, that is, the wavelength of the blue light output by the first chip 511 is smaller than the wavelength of the blue light output by the second chip 512. By respectively controlling the parameters of the blue light of the first wavelength band output by the two first chips 511 and controlling the parameters of the blue light of the second wavelength band output by the second chip 512, the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30 is controlled to achieve the rhythmic regulation of the light source structure 100, which is conducive to improving the comprehensive luminous display effect of the light source structure 100. Moreover, by controlling the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30, the contact time of the blue light of the first wavelength band (short wave) output by the first chip 511 with the human eye can be controlled, thereby reducing the blue light emitted by the light source structure 100 that is harmful to the human eye.

[0085] Furthermore, in the light source structure 100 provided in the fourth embodiment of the present application, the housing 10 has three groups of electrodes, the three groups of electrodes penetrate the bottom wall of the accommodating groove 11, one group of electrodes is electrically connected to a first chip 511, another group of electrodes is electrically connected to a second chip 512, and another group of electrodes is electrically connected to another first chip 511. Thus, independent light emission control of the two first chips 511 and the second chip 512 can be achieved, which facilitates the light source structure 100 to achieve white balance adjustment and rhythm adjustment.

[0086] For example, using green CsPbX3 (X = C1, Br, I) QD phosphor and red KSF phosphor 71 with better color purity, compared with the light source structure 100 provided in the first embodiment, the PWHM of the InGaN / GaN green light chip 53 at a peak of about 530nm is larger than that of the perovskite green QD phosphor 76, and the color purity cannot be compared with that of the perovskite. According to the measured QD CdSe, CsPbX3, and BG-LED BLU spectra, it can be seen that the PWHM of the green CsPbX3 (X = C1, Br, I) QD phosphor at a peak of about 530nm is smaller than that of the InGaN / GaN green light chip 53, and the data is concentrated and has high accuracy.

[0087] See also Figure 13 to Figure 14 , Fig.13 is a cross-sectional view of a second light source structure provided in the fourth embodiment of the present application, Fig.14 It is a front view of the second light source structure provided in the fourth embodiment of the present application.

[0088] The second light source structure 100 provided in the fourth embodiment of the present application is substantially the same as the first light source structure 100 provided in the fourth embodiment of the present application, except that the number of the first chip 511 in the second light source structure 100 provided in the fourth embodiment of the present application is one, and the number of the second chip 512 is two. One first chip 511 and two second chips 512 are both disposed in the receiving groove 11 and located at the bottom of the receiving groove 11, one first chip 511 and two second chips 512 are arranged along a plane parallel to the bottom of the receiving groove 11, and the first chip 511 is disposed between the two second chips 512. The red KSF phosphor 71 covers one second chip 512 and is disposed parallel to the bottom of the receiving groove 11, the green QD phosphor 76 covers another second chip 512 and is disposed parallel to the bottom of the receiving groove 11, and the red KSF phosphor 71 and the green QD phosphor 76 are spaced apart, that is, the first chip 511 is not covered with the red KSF phosphor 71 or the green QD phosphor 76. The first chip 511 is used to output blue light of the first wavelength band and emits from the light-transmitting plate 30, and a second chip 512 is used to output blue light of the second wavelength band, and part of the blue light output by the second chip 512 is used to excite the red KSF phosphor 71 to form red light, and another part of the blue light output by the second chip 512 is emitted from the light-transmitting plate 30. Another second chip 512 is used to output blue light of the second wavelength band, and part of the blue light output by the second chip 512 is used to excite the green QD phosphor 76 to form green light, and another part of the blue light output by the second chip 512 is emitted from the light-transmitting plate 30. In this way, mixed light of three colors of R, G, and B can be emitted from the light-transmitting plate 30.

[0089] The second light source structure 100 provided in the fourth embodiment of the present application outputs blue light of the first wavelength band through the first chip 511 and emits from the light-transmitting plate 30, and a second chip 512 outputs blue light of the second wavelength band, part of the blue light output by the second chip 512 excites the red KSF phosphor 71 to form red light, and another part of the blue light output by the second chip 512 is emitted from the light-transmitting plate 30. Another second chip 512 outputs blue light of the second wavelength band, part of the blue light output by the second chip 512 excites the green QD phosphor 76 to form green light, and another part of the blue light output by the second chip 512 is emitted from the light-transmitting plate 30 to form mixed light of three colors of R, G, and B. By respectively controlling the parameters of the blue light of the first wavelength band output by the first chip 511 and the parameters of the blue light of the second wavelength band output by the two second chips 512, the proportions of the three colors of light R, G, and B in the mixed light of the three colors of R, G, and B are changed, thereby achieving white balance adjustment of the light source structure 100, which is beneficial to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and can meet the display needs of different display scenes. At the same time, since the blue light output by the first chip 511 is the blue light of the first wavelength band, the blue light output by the second chip 512 is the blue light of the second wavelength band, and the first wavelength band is smaller than the second wavelength band, that is, the wavelength of the blue light output by the first chip 511 is smaller than the wavelength of the blue light output by the second chip 512. By respectively controlling the parameters of the blue light of the first wavelength band output by the first chip 511 and the parameters of the blue light of the second wavelength band output by the two second chips 512, the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30 is controlled to achieve the rhythmic regulation of the light source structure 100, which is beneficial to improving the comprehensive luminous display effect of the light source structure 100. Moreover, by controlling the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30, the contact time of the blue light of the first wavelength band (short wave) output by the first chip 511 with the human eye can be controlled, thereby reducing the blue light emitted by the light source structure 100 that is harmful to the human eye.

[0090] Furthermore, in the light source structure 100 provided in the fourth embodiment of the present application, the housing 10 has three groups of electrodes, the three groups of electrodes penetrate the bottom wall of the accommodating groove 11, one group of electrodes is electrically connected to the first chip 511, another group of electrodes is electrically connected to a second chip 512, and another group of electrodes is electrically connected to another second chip 512. Thus, independent light emission control of the first chip 511 and the two second chips 512 can be achieved, which facilitates the light source structure 100 to achieve white balance adjustment and rhythm adjustment.

[0091] See also Figure 15 to Figure 16 , Fig.15 is a cross-sectional view of a first light source structure provided in the fifth embodiment of the present application, Fig.16 It is a front view of the first light source structure provided in the fifth embodiment of the present application.

[0092] The first light source structure 100 provided in the fifth embodiment of the present application is substantially the same as the light source structure 100 provided in the first embodiment of the present application, except that at least two excitation chips 50 in the first light source structure 100 provided in the fifth embodiment of the present application include four purple light chips 55, and the luminescent material 70 includes a red KSF phosphor 71, a green QD phosphor 76, a first blue QD phosphor 77, and a second blue QD phosphor 78. The four purple chips 55 are all arranged in the receiving groove 11 and located at the bottom of the receiving groove 11. The four purple chips 55 are arranged in sequence along a plane parallel to the bottom of the receiving groove 11. The red KSF phosphor 71 is covered on one purple chip 55 and is arranged parallel to the bottom of the receiving groove 11. The green QD phosphor 76 is covered on another purple chip 55 and is arranged parallel to the bottom of the receiving groove 11. The first blue QD phosphor 77 is covered on another purple chip 55 and is arranged parallel to the bottom of the receiving groove 11. The second blue QD phosphor 78 is covered on another purple chip 55 and is arranged parallel to the bottom of the receiving groove 11. Among the four purple light chips 55, one purple light chip 55 is used to output purple light to excite the red KSF phosphor 71 to form red light, one purple light chip 55 is used to output purple light to excite the green QD phosphor 76 to form green light, one purple light chip 55 is used to output purple light to excite the first blue QD phosphor 77 to form blue light of the first band, and one purple light chip 55 is used to output purple light to excite the second blue QD phosphor 78 to form blue light of the second band. The first band is smaller than the second band. Thus, mixed light of the three colors of R, G, and B can be emitted from the light-transmitting plate 30.

[0093] In the first light source structure 100 provided in the fifth embodiment of the present application, one of the four purple light chips 55 is used to output purple light to excite the red KSF phosphor 71 to form red light, one purple light chip 55 is used to output purple light to excite the green QD phosphor 76 to form green light, one purple light chip 55 is used to output purple light to excite the first blue QD phosphor 77 to form blue light of the first band, and one purple light chip 55 is used to output purple light to excite the second blue QD phosphor 78 to form blue light of the second band, so as to form a mixed light of the three colors of R, G, and B at the light-transmitting plate 30. By controlling the parameters of the purple light output by the four purple light chips 55 respectively, the proportions of the three colors of R, G, and B in the mixed light of the three colors of R, G, and B are changed, and the white balance adjustment of the light source structure 100 is realized, which is conducive to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and the display needs of different display scenes can be realized. At the same time, since one purple light chip 55 excites the first blue QD phosphor 77 to output blue light of the first wavelength band, and the other purple light chip 55 excites the second blue QD phosphor 78 to output blue light of the second wavelength band, and the first wavelength band is smaller than the second wavelength band, that is, the wavelength of the blue light output by the first blue QD phosphor 77 is smaller than the wavelength of the blue light output by the second blue QD phosphor 78. By respectively controlling the parameters of the purple light output by the two purple light chips 55 respectively connected to the first blue QD phosphor 77 and the second blue QD phosphor 78, the relative proportion of the blue light of the first wavelength band output by the first blue QD phosphor 77 and the blue light of the second wavelength band output by the second blue QD phosphor 78 emitted from the light-transmitting plate 30 is controlled to achieve rhythmic regulation of the light source structure 100, which is beneficial to improving the comprehensive luminous display effect of the light source structure 100. Moreover, by controlling the relative proportion of the blue light in the first band and the blue light in the second band emitted from the light-transmitting plate 30, the contact time between the blue light in the first band (short wave) output by the first blue QD phosphor 77 and the human eye can be controlled, thereby reducing the blue light emitted by the light source structure 100 that is harmful to the human eye.

[0094] Furthermore, in the first light source structure 100 provided in the fifth embodiment of the present application, four groups of electrodes are provided on the shell 10, and the four groups of electrodes penetrate the bottom wall of the accommodating groove 11. The four groups of electrodes are electrically connected to the four ultraviolet chips 55 respectively, so as to realize independent light-emitting control of the four ultraviolet chips 55, and facilitate the light source structure 100 to realize white balance adjustment and rhythm adjustment.

[0095] Exemplarily, the ultraviolet light output by the purple light chip 55 excites the green QD phosphor 76, the blue QD phosphor and the red KSF phosphor 71, and blue light, green light and red light are emitted at the light-transmitting plate 30. According to research, the minimum PWHM of the green QD phosphor 76, the first blue QD phosphor 77 and the second blue QD phosphor 78 to be excited to emit light can reach 12, and can achieve a NTSC color gamut area ratio of 140%. At the same time, by changing the Cl / Br / I ratio in CsPbX3 (X=C1, Br, I), the quantum size of the green QD phosphor 76, the first blue QD phosphor 77 and the second blue QD phosphor 78 can be adjusted to form corresponding quantum dots of the first band blue light (Peak: 455-460nm), the second band blue light (Peak: 478-483nm) and the green light (Peak: 527-532nm). Therefore, the first light source structure 100 provided in the fifth embodiment of the present application has a higher photoelectric conversion efficiency than the conventional high color gamut WLED.

[0096] See also Figure 17 to Figure 18 , Fig.17 is a cross-sectional view of a second light source structure provided in the fifth embodiment of the present application, Fig.18 This is a front view of the second light source structure provided in the fifth embodiment of the present application.

[0097] The second light source structure 100 provided in the fifth embodiment of the present application is substantially the same as the first light source structure 100 provided in the fifth embodiment of the present application, except that at least two excitation chips 50 in the second light source structure 100 provided in the fifth embodiment of the present application include three purple chips 55, and the luminescent material 70 includes a red KSF phosphor 71, a green QD phosphor 76, and a blue QD phosphor 79. The three purple chips 55 are all disposed in the receiving groove 11 and located at the bottom of the receiving groove 11, and the three purple chips 55 are arranged in sequence along a plane parallel to the bottom of the receiving groove 11, the red KSF phosphor 71 covers one purple chip 55 and is arranged parallel to the bottom of the receiving groove 11, the green QD phosphor 76 covers another purple chip 55 and is arranged parallel to the bottom of the receiving groove 11, and the blue QD phosphor 79 covers another purple chip 55 and is arranged parallel to the bottom of the receiving groove 11. Among the three purple light chips 55, one purple light chip 55 is used to output purple light to excite the red KSF phosphor 71 to form red light, one purple light chip 55 is used to output purple light to excite the green QD phosphor 76 to form green light, and one purple light chip 55 is used to output purple light to excite the blue QD phosphor 79 to form blue light. Thus, the light-transmitting plate 30 can emit mixed light of three colors: R, G, and B.

[0098] In the second light source structure 100 provided in the fifth embodiment of the present application, one of the three purple light chips 55 is used to output purple light to excite the red KSF phosphor 71 to form red light, one purple light chip 55 is used to output purple light to excite the green QD phosphor 76 to form green light, and one purple light chip 55 is used to output purple light to excite the blue QD phosphor 79 to form blue light, so as to form a mixed light of three colors of R, G, and B at the light-transmitting plate 30. By controlling the parameters of the purple light output by the three purple light chips 55 respectively, the proportion of the three colors of light of R, G, and B in the mixed light of the three colors of R, G, and B is changed, and the white balance adjustment of the light source structure 100 is realized, which is conducive to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and the display needs of different display scenes can be realized.

[0099] Furthermore, in the second light source structure 100 provided in the fifth embodiment of the present application, three groups of electrodes are provided on the shell 10, and the three groups of electrodes penetrate the bottom wall of the accommodating groove 11. The three groups of electrodes are electrically connected to the three ultraviolet chips 55 respectively, so that independent light emission control of the three ultraviolet chips 55 can be realized, which facilitates the light source structure 100 to achieve white balance adjustment.

[0100] See also Figure 19 to Figure 20 , Fig.19 is a cross-sectional view of a light source structure provided in the sixth embodiment of the present application, Fig. 20 It is a front view of a light source structure provided in the sixth embodiment of the present application.

[0101] The light source structure 100 provided in the sixth embodiment of the present application is substantially the same as the light source structure 100 provided in the first embodiment of the present application, except that at least two excitation chips 50 in the light source structure 100 provided in the sixth embodiment of the present application include a purple chip 55 and a blue chip 51, and the luminescent material 70 includes a red KSF phosphor 71 and a green QD phosphor 76, and the red KSF phosphor 71 and the green QD phosphor 76 are stacked. The purple chip 55 and the blue chip 51 are arranged in the receiving groove 11 and are located at the bottom of the receiving groove 11, and the purple chip 55 and the blue chip 51 are arranged relative to each other in a direction parallel to the bottom of the receiving groove 11. The green QD phosphor 76 covers the purple chip 55 and the blue chip 51 and is arranged parallel to the bottom of the receiving groove 11, and the red KSF phosphor 71 is stacked on the green QD phosphor 76. The purple light chip 55 is used to output purple light to excite the red KSF phosphor 71 to form red light, and the blue light chip 51 is used to output blue light. Part of the blue light output by the blue light chip 51 excites the green QD phosphor 76 to form green light, and the other part of the blue light output by the blue light chip 51 is emitted from the light-transmitting plate 30. Thus, mixed light of three colors of R, G, and B can be emitted from the light-transmitting plate 30.

[0102] The light source structure 100 provided in the sixth embodiment of the present application, in which the purple light output by the purple light chip 55 excites the red KSF phosphor 71 to form red light, and the blue light chip 51 outputs blue light. Part of the blue light output by the blue light chip 51 excites the green QD phosphor 76 to form green light, and the other part of the blue light output by the blue light chip 51 is emitted from the light-transmitting plate 30 to form a mixed light of the three colors of R, G, and B at the light-transmitting plate 30. By respectively controlling the parameters of the blue light output by the blue light chip 51 and the parameters of the purple light output by the purple light chip 55, the proportions of the three colors of R, G, and B in the mixed light of the three colors of R, G, and B are changed, respectively, to achieve white balance adjustment of the light source structure 100, which is beneficial to improving the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and can meet the display needs of different display scenes.

[0103] Furthermore, in the light source structure 100 provided in the sixth embodiment of the present application, two groups of electrodes are provided on the housing 10, and the two groups of electrodes penetrate the bottom wall of the accommodating groove 11, one group of electrodes is electrically connected to the blue light chip 51, and the other group of electrodes is electrically connected to the purple light chip 55. Thus, independent light emission control of the blue light chip 51 and the purple light chip 55 can be achieved, which facilitates the light source structure 100 to achieve white balance adjustment.

[0104] See also Figure 21 to Figure 22 , Fig.21 is a cross-sectional view of a light source structure provided in the seventh embodiment of the present application, Fig. 22 It is a front view of a light source structure provided in the seventh embodiment of the present application.

[0105] The light source structure 100 provided in the seventh embodiment of the present application is substantially the same as the light source structure 100 provided in the sixth embodiment of the present application, except that the blue chip 51 in the light source structure 100 provided in the seventh embodiment of the present application includes a first chip 511 and a second chip 512, the first chip 511, the second chip 512 and the purple chip 55 are arranged in the receiving groove 11 and located at the bottom of the receiving groove 11, and the first chip 511, the second chip 512 and the purple chip 55 are arranged relative to each other in a direction parallel to the bottom of the receiving groove 11. The green QD phosphor 76 covers the first chip 511, the second chip 512 and the purple chip 55 and is arranged parallel to the bottom of the receiving groove 11, and the red KSF phosphor 71 is stacked on the green QD phosphor 76. The first chip 511 is used to output blue light of the first wavelength band, part of the blue light output by the first chip 511 is used to excite the green QD phosphor 76 to form green light, another part of the blue light output by the first chip 511 is emitted from the light-transmitting plate 30, the second chip 512 is used to output blue light of the second wavelength band and emit it from the light-transmitting plate 30, the first wavelength band is smaller than the second wavelength band, and the purple light chip 55 is used to output purple light to excite the red KSF phosphor 71 to form red light. Thus, mixed light of three colors of R, G, and B can be emitted from the light-transmitting plate 30.

[0106] In the light source structure 100 provided in the seventh embodiment of the present application, the first chip 511 outputs blue light of the first band, part of the blue light output by the first chip 511 is used to excite the green QD phosphor 76 to form green light, the other part of the blue light output by the first chip 511 is emitted from the light-transmitting plate 30, the second chip 512 outputs blue light of the second band and emits from the light-transmitting plate 30, the first band is smaller than the second band, the purple light chip 55 outputs purple light to excite the red KSF phosphor 71 to form red light, so as to form a mixed light of the three colors of R, G, and B at the light-transmitting plate 30, and the parameters of the first chip 511 outputting the blue light of the first band, the parameters of the second chip 512 outputting the blue light of the second band, and the parameters of the purple light chip 55 outputting the purple light are respectively controlled to change the proportions of the three colors of R, G, and B in the mixed light of the three colors of R, G, and B, respectively, so as to realize the white balance adjustment of the light source structure 100, which is beneficial to improve the luminous display effect of the light source structure 100 and the color gamut of the light source structure 100, and can meet the display needs of different display scenes. At the same time, since a first chip 511 outputs blue light of the first wavelength band, and the second chip 512 outputs blue light of the second wavelength band, and the first wavelength band is smaller than the second wavelength band, that is, the wavelength of the blue light output by the first chip 511 is smaller than the wavelength of the blue light output by the second chip 512. By controlling the parameters of the blue light output by the first chip 511 and the second chip 512 respectively, the relative proportion of the blue light of the first wavelength band output by the first chip 511 and the blue light of the second wavelength band output by the second chip 512 emitted from the light-transmitting plate 30 is controlled to achieve the rhythm regulation of the light source structure 100, which is conducive to improving the comprehensive luminous display effect of the light source structure 100. Moreover, by controlling the relative proportion of the blue light of the first wavelength band and the blue light of the second wavelength band emitted from the light-transmitting plate 30, the contact time of the blue light of the first wavelength band (short wave) output by the first chip 511 with the human eye can be controlled, thereby reducing the blue light emitted by the light source structure 100 that is harmful to the human eye.

[0107] Furthermore, in the light source structure 100 provided in the seventh embodiment of the present application, three groups of electrodes are provided on the shell 10, and the three groups of electrodes penetrate the bottom wall of the accommodating groove 11. One group of electrodes is electrically connected to the first chip 511, another group of electrodes is electrically connected to the second chip 512, and another group of electrodes is electrically connected to the ultraviolet optical chip. Independent light emission control of the first chip 511, the second chip 512 and the ultraviolet chip 55 can be achieved, which is convenient for the light source structure 100 to achieve white balance adjustment and rhythm adjustment.

[0108] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A light source structure, characterized in that: include: A housing having a receiving groove; A light-transmitting plate, which covers the housing and seals the opening of the receiving groove; At least two excitation chips are arranged at the bottom of the containing groove; as well as A luminescent material is disposed on one side of the opening of at least two of the excitation chips facing the receiving groove; Wherein, the luminescent material is used to emit light of three colors of R, G, and B for mixing under the action of at least two of the excitation chips; Alternatively, the luminescent material is used to emit light of a first color among R, G, and B under the action of the excitation chip, so as to be mixed with the second and third color lights of R, G, and B emitted by at least two of the excitation chips; Alternatively, the luminescent material is used to emit a first and a second color of light among R, G, and B under the action of the excitation chip, so as to be mixed with a third color of light among R, G, and B emitted by at least two of the excitation chips.

2. The light source structure according to claim 1, characterized in that: At least two of the excitation chips include a blue light chip and a green light chip, and the luminescent material includes red KSF phosphor; the blue light chip is used to output blue light, a portion of the blue light output by the blue light chip is used to excite the red KSF phosphor to form red light, another portion of the blue light output by the blue light chip is emitted from the light-transmitting plate, and the green light chip is used to output green light and is emitted from the light-transmitting plate.

3. The light source structure according to claim 2, characterized in that: The blue light chip includes a first chip and a second chip, the first chip is used to output blue light of a first band, a portion of the blue light output by the first chip is used to excite the red KSF phosphor to form red light, and another portion of the blue light output by the first chip is emitted from the light-transmitting plate; the second chip is used to output blue light of a second band, and the blue light output by the second chip is emitted from the light-transmitting plate, and the first band is smaller than the second band.

4. The light source structure according to claim 1, characterized in that: At least two of the excitation chips include a first chip and a second chip, and the luminescent materials include a first red KSF phosphor, a first green QD phosphor, a second red KSF phosphor, and a second green QD phosphor; the first chip is used to output blue light of a first band, a portion of the blue light output by the first chip is used to excite the first red KSF phosphor to form red light, another portion of the blue light output by the first chip is used to excite the first green QD phosphor to form green light, and another portion of the blue light of the first chip is emitted from the light-transmitting plate; the second chip is used to output blue light of a second band, a portion of the blue light output by the second chip is used to excite the second red KSF phosphor to form red light, and another portion of the blue light output by the second chip is used to excite the second green QD phosphor to form green light; The first wavelength band is smaller than the second wavelength band.

5. The light source structure according to claim 1, characterized in that: At least two of the excitation chips include a first chip and a second chip, and the luminescent material includes a red KSF phosphor and a green QD phosphor; the number of the first chips is two, and the number of the second chip is one; one of the first chips is used to output blue light of the first band to excite the red KSF phosphor to form red light, another of the first chips is used to output blue light of the first band to excite the green QD phosphor to form green light, and the second chip is used to output blue light of the second band and emit from the light-transmitting plate; or, the number of the first chip is one, and the number of the second chips is two; the first chip is used to output blue light of the first band and emit from the light-transmitting plate, one of the second chips is used to output blue light of the second band to excite the red KSF phosphor to form red light, and another of the second chips is used to output blue light of the second band to excite the green QD phosphor to form green light.

6. The light source structure according to claim 1, characterized in that: At least two of the excitation chips include four purple light chips, and the luminescent materials include red KSF phosphor, green QD phosphor, first blue QD phosphor and second blue QD phosphor; among the four purple light chips, one purple light chip is used to excite the red KSF phosphor to form red light, one purple light chip is used to excite the green QD phosphor to form green light, one purple light chip is used to excite the first blue QD phosphor to form blue light of a first band, and one purple light chip is used to excite the second blue QD phosphor to form blue light of a second band; the first band is smaller than the second band.

7. The light source structure according to claim 1, characterized in that: At least two of the excitation chips include a purple light chip and a blue light chip, the luminescent material includes a red KSF phosphor and a green QD phosphor, and the red KSF phosphor and the green QD phosphor are stacked; the purple light chip is used to excite the red KSF phosphor to form red light, and the blue light chip is used to output blue light, a portion of the blue light output by the blue light chip is emitted from the light-transmitting plate, and another portion of the blue light output by the blue light chip is used to excite the green QD phosphor to form green light.

8. The light source structure according to claim 7, characterized in that: The blue light chip includes a first chip and a second chip, the first chip is used to output blue light of a first band, part of the blue light output by the first chip is used to excite the green QD phosphor to form green light, and another part of the blue light output by the first chip is emitted from the light-transmitting plate; the second chip is used to output blue light of a second band and emits from the light-transmitting plate, the first band is smaller than the second band.

9. A display device, characterized in that: include: The light source structure according to any one of claims 1 to 8; as well as The optical structure is used to install the light source structure, and the light emitted by the light source structure is emitted through the optical structure.

10. The display device according to claim 9, characterized in that The optical structure comprises a reflective layer, a light-guiding layer, a prism layer and a panel layer, wherein the reflective layer, the light-guiding layer, the prism layer and the panel layer are stacked in sequence; the light source structure is installed on the peripheral side of the light-guiding layer, and the light-emitting surface of the light source structure faces the light-guiding layer; or, the number of the light source structures is multiple; the optical structure comprises a substrate, a reflective layer, a light-guiding layer, a prism layer and a panel layer, wherein the substrate, the reflective layer, the light-guiding layer, the prism layer and the panel layer are stacked in sequence; a plurality of the light source structures are arranged in an array on the substrate facing the reflective layer The light guide layer is disposed on one side of the reflective layer and a gap is formed, and the reflective layer is arranged in the gap; there is a gap between the reflective layer and the light source structure, a part of the light guide layer is arranged in the gap, another part of the light guide layer covers the light emitting surface of the light source structure facing away from the substrate, and another part of the light guide layer is stacked with the reflective layer; the light guide layer has a depression on the side away from the reflective layer, each of the depressions is arranged opposite to one of the light source structures in the stacking direction, a part of the prism layer is arranged in the depression, and another part of the prism layer is stacked with the light guide layer.

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