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WO2013008797A1 - Dispositif à émission de lumière de surface, et dispositif d'affichage - Google Patents

Dispositif à émission de lumière de surface, et dispositif d'affichage Download PDF

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Publication number
WO2013008797A1
WO2013008797A1 PCT/JP2012/067521 JP2012067521W WO2013008797A1 WO 2013008797 A1 WO2013008797 A1 WO 2013008797A1 JP 2012067521 W JP2012067521 W JP 2012067521W WO 2013008797 A1 WO2013008797 A1 WO 2013008797A1
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WO
WIPO (PCT)
Prior art keywords
emitting device
light
light source
optical member
light emitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/067521
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English (en)
Japanese (ja)
Inventor
滋規 田中
良信 平山
柳　俊洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of WO2013008797A1 publication Critical patent/WO2013008797A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members

Definitions

  • the present invention relates to a surface light-emitting device that can be used as a direct backlight and a display device including the surface light-emitting device.
  • direct type backlights used for liquid crystal display devices are known.
  • a backlight generally, a plurality of light sources (for example, light emitting diodes) are disposed so as to face the liquid crystal display panel.
  • light emitted from a light source in a direct type backlight has directivity in the front direction. Therefore, in order to make the luminance uniform over the entire display screen of the liquid crystal display device, some device for making the luminance of light uniform is necessary.
  • Patent Document 1 discloses an illuminating device including a plurality of diffusion assisting members 16 and 17 in a region facing a light source 14 in a diffusion member disposed facing the light source 14. By providing the diffusion assisting members 16 and 17, the illumination device can achieve uniform luminance without reducing luminance.
  • Japanese Patent Publication Japanese Patent Laid-Open No. 2010-40236 (published on February 18, 2010)”
  • FIG. 11 is a graph showing the relationship between the viewing angle and the relative luminance in the illumination device according to the related art.
  • the light emitted from the illumination device of Patent Document 1 has a relative luminance of 100 at a viewing angle of 0 degrees, it has a relative luminance of 40 at an oblique viewing angle of ⁇ 45 degrees.
  • the illumination device of Patent Document 1 can be used effectively.
  • the present invention has been made in view of the above situation, and according to the surface light emitting device according to one aspect of the present invention, it is possible to irradiate light having luminance peaks in two different directions which are oblique to each other.
  • the light emitted from the light source is directed to the protrusion provided to face the light source.
  • the light irradiated to the outside from the surface light emitting device has a luminance peak in two different oblique directions, not in the front direction of the surface light emitting device.
  • the surface light-emitting device has an effect of being able to irradiate light having luminance peaks in two obliquely different directions. Accordingly, the surface light emitting device exhibits its effect well when used in a display device capable of dual view display.
  • the surface light emitting device has an effect of irradiating light having luminance peaks in two obliquely different directions.
  • FIG. 1 It is a figure which shows the principal part structure of the surface emitting device which concerns on one Embodiment of this invention. It is a figure explaining a mode that the surface emitting apparatus which concerns on one Embodiment of this invention is displaying two mutually different information separately in two mutually different diagonal directions. It is a figure which shows the some optical member provided in the diffuser plate at the matrix form It is a figure which shows a mode that the light which has directivity in the front radiate
  • (A) is a graph which shows the relationship between the radiation angle of the light radiate
  • (b) is the graph which shows the relationship between the radiation angle of the light radiate
  • (A) And (b) is a figure which shows the optical member in the 4th Embodiment of this invention. It is a figure which shows the optical member in the 5th Embodiment of this invention. It is a figure which shows the optical member in the 6th Embodiment of this invention. It is a graph which shows the relationship between the viewing angle and relative luminance in the surface emitting device of a prior art.
  • FIG. 1 is a diagram showing a main configuration of a liquid crystal display device according to an embodiment of the present invention.
  • the liquid crystal display device 1 includes a liquid crystal panel 18 and a surface light emitting device 10.
  • the liquid crystal panel 18 is a so-called dual view display panel.
  • the surface light emitting device 10 is a kind of direct type backlight.
  • the surface light emitting device 10 includes a plurality of LEDs 11, a plurality of mounting boards 12, a plurality of optical members 13, a plurality of prisms 13 a, a diffusion plate 14, a reflective material 15, and a bezel 16.
  • a plurality of LEDs 11, a plurality of mounting boards 12, and a reflective material 15 are included in the bezel 16. There is an air layer 17 in the bezel 16.
  • the plurality of mounting boards 12 are arranged on the upper surface of the reflective material 15.
  • Each LED 11 is mounted on the upper surface of each mounting substrate 12.
  • the reflective material 15 has a property of reflecting light. Therefore, when the light emitted from the LED 11 is refracted or reflected in the bezel 16 and travels toward the reflective material 15, the reflective material 15 reflects the light to diffuse the diffuser 14 (that is, the surface light emitting device 10). To the outside).
  • Each LED 11 is a light emitting diode. Therefore, the surface light emitting device 10 can radiate bright light with low power consumption.
  • a diffusion plate 14 is disposed so as to cover the inside of the bezel 16.
  • a plurality of optical members 13 are provided on the surface of the diffusion plate 14 facing the inside of the bezel 16.
  • Each optical member 13 is provided on the surface of the diffusion plate 14 facing the LED 11 so as to face the corresponding LED 11.
  • Each optical member 13 has at least one prism 13a that protrudes from the diffuser plate 14 toward the LED 11 and has a narrower width at a position closer to the LED 11.
  • each optical member 13 is arrange
  • the prism 13a has a symmetrical shape with respect to the optical axis of the LED 11.
  • the surface emitting device 10 can irradiate light in two different oblique directions that are symmetrical with respect to the optical axis of the LED 11.
  • the prism 13a does not necessarily have to be symmetric with respect to the optical axis of the LED 11.
  • each optical member 13 has a plurality of protrusions (ie, prisms 13a) having a prism shape.
  • the surface emitting device 10 can irradiate light having a sharp luminance peak in two different oblique directions.
  • FIG. 2 is a diagram for explaining how the liquid crystal display device 1 according to an embodiment of the present invention individually displays two different pieces of information in two different oblique directions. As shown in this figure, the liquid crystal display device 1 can individually display two different information (image 101a and image 101b) in two different oblique directions. That is, the liquid crystal display device 1 is a display device capable of so-called dual view display. (Planar arrangement of optical members) FIG.
  • FIG. 3 is a diagram showing a plurality of optical members provided in a matrix on the diffusion plate.
  • a plurality of optical members 13 are provided in a matrix on the diffusion plate 14.
  • the LED 11 is arranged for each optical member 13.
  • luminance peak of irradiated light can be controlled in two mutually different diagonal directions in the whole surface of the light irradiation surface in the surface emitting device 10.
  • FIG. 4 shows a state in which light having directivity emitted from the light source is converted into light having directivity in two different oblique directions when emitted from the diffusion plate.
  • the light 19 emitted from the LED 11 travels to a protruding portion provided facing the LED 11.
  • the light 20 irradiated to the outside from the surface light emitting device has a luminance peak in two obliquely different directions instead of the front direction of the surface light emitting device.
  • the light 19 (light with a very small emission angle) emitted from the LED 11 in an oblique direction and passing through the optical member 13 is redirected in the front direction by the optical member 13 and further diffused.
  • the light 19 that has directly entered the diffusion plate 14 without passing through the optical member 13 is diffused by the diffusion plate 14 and emitted.
  • (Luminance peak of outgoing light) 5A is a graph showing the relationship between the radiation angle of the light emitted from the LED 11 and the relative luminous intensity
  • FIG. 5B shows the relationship between the radiation angle of the light emitted from the diffusion plate 14 and the relative luminance. It is a graph which shows a relationship.
  • the directivity of the light 19 emitted from the LED 11 becomes directivity having a peak in the front direction as shown in the graph of FIG. Therefore, the directivity of light emitted from the conventional direct type backlight including the LED 11 depends on the LED 11, and thus has a peak in the front direction, like the light 19 from the LED 11.
  • the light 19 emitted from the LED 11 is subjected to direction change control by the optical member 13. Therefore, as shown in the graph of FIG. 5B, the light 20 emitted from the surface light emitting device 10 and directed to the liquid crystal panel 18 has luminance peaks in two different oblique directions. Accordingly, by using the surface light emitting device 10 and the dual-view display type liquid crystal panel 18 in combination, it is possible to improve deterioration of display quality in two different oblique directions in the liquid crystal display device 1. Further, it is not necessary to increase the power consumption in order to increase the luminance in two different oblique directions.
  • FIG. 6 is a view showing the optical member 23 in the second embodiment of the present invention.
  • the surface light emitting device 10 of this embodiment includes an optical member 23.
  • the prism 13 a constituting the optical member 23 extends in the same direction as one side of the diffusion plate 14.
  • a plurality of optical members 23 are provided in parallel to each other with a certain interval in the diffusion plate 14.
  • the number of necessary optical members 23 can be reduced as compared with the first embodiment in which the optical members 23 are provided in a matrix. Therefore, the surface light emitting device 10 can be manufactured more easily.
  • FIG. 7 is a view showing the optical member 33 and the optical member 43 in the third embodiment of the present invention.
  • the surface light emitting device 10 of this embodiment includes an optical member 33 and an optical member 43.
  • the plurality of optical members 33 and the plurality of optical members 43 are provided in a matrix as a whole.
  • the prism 13 a included in the optical member 43 arranged in a certain row of the diffusion plate 14 extends in the same direction as one side of the diffusion plate 14.
  • the prism 13a included in the optical member 43 arranged in the row next to the certain row in the diffusion plate 14 extends in a direction orthogonal to the same direction.
  • the light emitted from the LEDs 11 is separated from the left and right diagonal directions and emitted from the diffusion plate 14 by the optical member 33 arranged in a certain row.
  • the light emitted from the LEDs 11 is emitted from the diffuser plate 14 in the vertical direction perpendicular to the left and right diagonal directions by the optical member 43 arranged in the next row of the certain row. Therefore, in the surface light emitting device 10 according to the present embodiment, it is possible to irradiate light having luminance peaks in four directions, up, down, left, and right.
  • FIG. 8 is a figure which shows the optical member in the 4th Embodiment of this invention.
  • the surface light emitting device 10 of this embodiment includes an optical member 53.
  • the optical member 53 has a plurality of prisms 13a.
  • the prism axes of some of the plurality of prisms 13 a are in the same direction as one side of the diffusion plate 14.
  • the prism axes of the remaining prisms 13a are in a direction orthogonal to the same direction.
  • the light emitted from the LED 11 is divided into two left and right oblique directions and emitted from the diffusion plate 14 by the prism 13a having the prism axis in the same direction as one side of the diffusion plate 14.
  • the light emitted from the LED 11 is divided into the vertical direction perpendicular to the left and right diagonal directions and emitted from the diffusion plate 14 by the remaining prism 13a. Therefore, in the surface light emitting device 10 according to the present embodiment, it is possible to irradiate the light 20 having the luminance peaks in the four oblique directions of up, down, left, and right.
  • FIG. 8B is a figure which shows the optical member 63 in the 4th Embodiment of this invention.
  • the optical member 63 has a plurality of prisms 13a.
  • the prism axes of some of the plurality of prisms 13 a are in the same direction as one side of the diffusion plate 14.
  • the prism axes of the remaining prisms 13a are in a direction orthogonal to the same direction. Accordingly, the surface light emitting device 10 including the optical member 63 has the same effect as the surface light emitting device 10 including the optical member 53.
  • the surface light emitting device 10 may include an optical member having a prism 13a formed in a circular shape.
  • the light 20 emitted from the surface light emitting device 10 has the same luminance peak on the entire circumference around the front direction.
  • FIG. 9 is a figure which shows the optical member 73 in the 5th Embodiment of this invention.
  • the optical member 73 has a plurality of microlenses 73a.
  • Each microlens 73a has a hemispherical surface. Accordingly, the surface light emitting device 10 including the optical member 73 can irradiate the light 20 having the same luminance peak on the entire circumference around the front direction.
  • FIG. 9B is a diagram showing an optical member 83 in the fifth embodiment of the present invention.
  • the optical member 83 includes a prism 13a having a line whose cross section parallel to the optical axis is inclined with respect to the optical axis and has at least one inflection point. Have more than one. Therefore, in the light 20 emitted through the individual prisms 13a, the luminance peak values in two different oblique directions are lower, but the viewing angle characteristics of a constant viewing angle centered on the peak are improved.
  • the luminance peak of the light 20 is polarized in the direction of ⁇ 45 degrees as viewed from the front.
  • the luminance peak of the light 20 is polarized in the directions of ⁇ 40 degrees and ⁇ 50 degrees as viewed from the front.
  • FIG. 10 is a diagram showing an optical member 93 according to the sixth embodiment of the present invention.
  • the surface light emitting device 10 of this embodiment includes an optical member 93.
  • the optical member 93 has a plurality of prisms 93a and a plurality of prisms 93b having prism axes parallel to each other.
  • the apex angle of the prism 93 a provided at a position facing the light emitting area of the LED 11 is larger than the apex angle of the prism 93 b provided at a position facing the non-light emitting area of the LED 11.
  • the apex angle of the prism 93a is 90 degrees. This is because the light 19 emitted from the LED 11 is polarized in the direction of ⁇ 45 degrees when viewed from the front direction when emitted from the diffusion plate 14.
  • the apex angle of the prism 93b can be controlled such that the light 19 emitted from the LED 11 in the direction of 5 to 15 degrees is light 20 emitted from the diffusion plate 14 in the direction of ⁇ 45 degrees when viewed from the front. Make an angle that you can.
  • the apex angle of the prism 93a is 90 degrees
  • the apex angle of the prism 93b is preferably 75 degrees to 85 degrees.
  • the value of the luminance peak of the light 20 in the ⁇ 45 degree direction when viewed from the front direction can be made higher than in the case of the first embodiment.
  • the luminance peak of the light 20 in two different oblique directions can be made sharper.
  • the optical member 93 includes two types of prisms 93a and 93b having different apex angles.
  • the optical member 93 of the present embodiment is not limited to this configuration.
  • the optical member 93 may include a plurality of prisms having smaller apex angles as they are farther in the in-plane direction of the diffusion plate 14 with respect to the optical axis.
  • a surface emitting device is a solution to the above-described problem.
  • a light source A diffusion plate disposed opposite to the light source; At least one which is provided on the surface of the diffuser plate facing the light source so as to face the light source, protrudes from the diffuser plate toward the light source, and becomes closer to the light source.
  • an optical member having two protrusions.
  • the light emitted from the light source is directed to the protrusion provided to face the light source.
  • the light irradiated to the outside from the surface light emitting device has a luminance peak in two different oblique directions, not in the front direction of the surface light emitting device.
  • the surface light-emitting device has an effect of being able to irradiate light having luminance peaks in two obliquely different directions. Accordingly, the surface light emitting device exhibits its effect well when used in a display device capable of dual view display.
  • a plurality of the optical members are arranged in a matrix, It is preferable that the light source is arranged for each optical member.
  • the luminance peak of the irradiated light can be controlled in two different oblique directions over the entire light irradiation surface of the surface light emitting device.
  • the protruding portion of the optical member extends in the same direction as one side of the diffusion plate, It is preferable that the plurality of optical members are provided in parallel to each other at regular intervals.
  • the number of necessary optical members can be reduced as compared with the case where the optical members are provided in a matrix. Therefore, the surface light emitting device can be manufactured more easily.
  • the protruding part of the optical member arranged in a row extends in the same direction as one side of the diffuser plate, It is preferable that the protrusions of the optical member arranged in the next row of the certain row extend in a direction orthogonal to the same direction.
  • the light emitted from the light source is emitted from the diffusion plate in two oblique directions on the left and right by the protrusions arranged in a row.
  • the light emitted from the light source is divided into the vertical direction perpendicular to the left and right oblique directions and emitted from the diffusion plate by the protrusions arranged in the next row of the certain row. Therefore, the surface light-emitting device according to one embodiment of the present invention can irradiate light having luminance peaks in four directions, up, down, left, and right.
  • the protrusion has a symmetrical shape with respect to the optical axis of the light source.
  • the surface light emitting device can irradiate light in two different oblique directions that are symmetrical with respect to the optical axis of the light source.
  • the protrusion preferably has a prism shape.
  • the surface light emitting device can irradiate light having sharp luminance peaks in two different oblique directions.
  • the optical member has a plurality of prisms as the plurality of protrusions,
  • the prism axes of some of the plurality of prisms are in the same direction as one side of the diffuser plate, and the prism axes of the remaining prisms are in a direction orthogonal to the same direction. Is preferred.
  • the light emitted from the light source is divided into two left and right oblique directions and emitted from the diffusion plate by the prism having the prism axis in the same direction as one side of the diffusion plate.
  • the light emitted from the light source is separated from the left and right diagonal directions by the remaining prisms and emitted from the diffusion plate. Therefore, in the surface light emitting device according to this aspect, it is possible to irradiate light having luminance peaks in the four directions of up, down, left, and right.
  • the optical member has a plurality of prisms as the plurality of protrusions having prism axes parallel to each other, Among the plurality of prisms, an apex angle of the prism provided at a position facing the light emitting region of the light source is larger than an apex angle of the prism provided at a position facing the non-light emitting region of the light source. Larger is preferred.
  • the luminance peak of the irradiation light in two different oblique directions can be made sharper.
  • a cross section of the protruding portion parallel to the optical axis has a line that is inclined with respect to the optical axis and has at least one inflection point.
  • the luminance peak value in two different oblique directions becomes low, but the viewing angle characteristic of a constant viewing angle centered on the peak is improved.
  • the light source is preferably a light emitting diode.
  • the surface light emitting device can radiate bright light with low power consumption.
  • the protrusion is provided integrally with the diffusion plate.
  • the number of parts necessary for the surface light emitting device according to one aspect of the present invention can be reduced, so that the cost required for manufacturing the surface light emitting device can be reduced.
  • a display device In order to solve the above problems, a display device according to one embodiment of the present invention is provided.
  • One of the surface light emitting devices described above is provided.
  • the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.
  • the surface emitting device in each embodiment of the present invention may include a cold cathode fluorescent lamp (CCFL) as a light source instead of the LED 11.
  • CCFL cold cathode fluorescent lamp
  • Optical sheet The surface light emitting device in each embodiment of the present invention may further include various optical sheets (such as a lens sheet, a diffusion sheet, or a microlens array) disposed between the diffusion plate 14 and the liquid crystal panel 18. Good.
  • the optical member may be provided integrally with the diffusion plate 14. In this case, since the number of parts necessary for the surface light emitting device can be reduced, the cost required for manufacturing the surface light emitting device can be reduced.
  • the present invention can be widely used as a surface light-emitting device incorporated in a transmissive display device. Moreover, it can utilize also as a surface light-emitting device integrated in an illuminating device.
  • Liquid crystal display device (display device) 10 Surface light emitting device 11 LED 12 Mounting board 13 Optical member 13a Prism (protrusion) 14 Diffuser 15 Reflective Material 16 Bezel 17 Air Layer 18 Liquid Crystal Panel 19 Light (Outgoing) 20 light (emitted light)

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

Selon l'invention, un élément optique (13) est disposé sur une surface d'une plaque de diffusion (14), ladite surface faisant face à une DEL (11), de sorte que l'élément optique (13) fait face à la DEL (11), et comprend au moins un prisme (13a) qui fait saillie à partir de la plaque de diffusion (14) vers la DEL (11). La largeur du prisme (13a) diminue vers la DEL (11).
PCT/JP2012/067521 2011-07-14 2012-07-09 Dispositif à émission de lumière de surface, et dispositif d'affichage Ceased WO2013008797A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011156133 2011-07-14
JP2011-156133 2011-07-14

Publications (1)

Publication Number Publication Date
WO2013008797A1 true WO2013008797A1 (fr) 2013-01-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020007233A1 (fr) * 2018-07-05 2020-01-09 深圳创维－Rgb电子有限公司 Membrane composite et son procédé de conception
WO2020054602A1 (fr) * 2018-09-13 2020-03-19 ミネベアミツミ株式会社 Dispositif d'éclairage de surface
CN114709323A (zh) * 2022-03-24 2022-07-05 Tcl华星光电技术有限公司 显示面板和显示装置

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Publication number Priority date Publication date Assignee Title
JP2001066547A (ja) * 1999-08-31 2001-03-16 Toshiba Corp 立体表示装置
JP2007080595A (ja) * 2005-09-13 2007-03-29 Nec Corp 照明装置及び表示装置
JP2007194214A (ja) * 2006-01-16 2007-08-02 Samsung Electro Mech Co Ltd 導光板及びそれを採用したディスプレイ装置
JP2008166057A (ja) * 2006-12-27 2008-07-17 Sony Corp 面状光源装置、表示装置及び面状照明方法
JP2008300222A (ja) * 2007-05-31 2008-12-11 Victor Co Of Japan Ltd 直下型バックライト装置
JP2010040236A (ja) * 2008-08-01 2010-02-18 Epson Imaging Devices Corp 照明装置、電気光学装置及び電子機器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001066547A (ja) * 1999-08-31 2001-03-16 Toshiba Corp 立体表示装置
JP2007080595A (ja) * 2005-09-13 2007-03-29 Nec Corp 照明装置及び表示装置
JP2007194214A (ja) * 2006-01-16 2007-08-02 Samsung Electro Mech Co Ltd 導光板及びそれを採用したディスプレイ装置
JP2008166057A (ja) * 2006-12-27 2008-07-17 Sony Corp 面状光源装置、表示装置及び面状照明方法
JP2008300222A (ja) * 2007-05-31 2008-12-11 Victor Co Of Japan Ltd 直下型バックライト装置
JP2010040236A (ja) * 2008-08-01 2010-02-18 Epson Imaging Devices Corp 照明装置、電気光学装置及び電子機器

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020007233A1 (fr) * 2018-07-05 2020-01-09 深圳创维－Rgb电子有限公司 Membrane composite et son procédé de conception
US11947137B2 (en) 2018-07-05 2024-04-02 Shenzhen Skyworth-Rgb Electronic Co., Ltd Method for composite membrane and composite membrane
WO2020054602A1 (fr) * 2018-09-13 2020-03-19 ミネベアミツミ株式会社 Dispositif d'éclairage de surface
JPWO2020054602A1 (ja) * 2018-09-13 2021-02-15 ミネベアミツミ株式会社 面状照明装置
US11175016B2 (en) 2018-09-13 2021-11-16 Minebea Mitsumi Inc. Planar illumination device with spacer between lens and diffuser
CN114709323A (zh) * 2022-03-24 2022-07-05 Tcl华星光电技术有限公司 显示面板和显示装置

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