WO2023162572A1 - 照明装置 - Google Patents
照明装置 Download PDFInfo
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- WO2023162572A1 WO2023162572A1 PCT/JP2023/002557 JP2023002557W WO2023162572A1 WO 2023162572 A1 WO2023162572 A1 WO 2023162572A1 JP 2023002557 W JP2023002557 W JP 2023002557W WO 2023162572 A1 WO2023162572 A1 WO 2023162572A1
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- WIPO (PCT)
- Prior art keywords
- light distribution
- distribution range
- light
- liquid crystal
- unit
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/16—Controlling the light source by timing means
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Definitions
- the present disclosure relates to lighting devices.
- a lighting fixture having a liquid crystal dimming element is disclosed in Patent Document 1.
- dimming is performed by applying an electric signal to the liquid crystal dimming element.
- the brightness in the room will vary depending on the time of day. Since the light that enters the room through the window differs depending on the time of day, for example, the light that enters the room through the window differs between the morning and the afternoon, so the brightness in the room differs between the morning and the afternoon. For this reason, it is not possible to make the room have uniform brightness regardless of the time of day.
- the present invention has been made in view of the above, and its object is to provide a lighting device that can make the interior of a room have uniform brightness regardless of the time of day.
- a lighting device includes a light source unit that emits light toward a floor surface of a room, and a storage unit that stores light distribution range data regarding a light irradiation range in the room in association with time information.
- a time information acquisition unit for acquiring time information about the current time;
- a light distribution range setting unit for setting a light distribution range of light from the light source unit; and the time information acquired by the time information acquisition unit.
- a control unit that reads corresponding light distribution range data from the storage unit and controls the light distribution range setting unit based on the light distribution range data.
- FIG. 1 is a block diagram showing the functional configuration of the lighting device according to the first embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating an operation example of the lighting device.
- FIG. 3 is a conceptual diagram showing an example of contents stored in a storage unit for realizing the operation of FIG.
- FIG. 4 is a conceptual diagram showing an example of contents stored in a storage unit, etc., in the second embodiment.
- FIG. 5 is a diagram showing an example of gradually changing the size of the light distribution range.
- FIG. 6 is a diagram showing an example of gradually changing the shape of the light distribution range from a circle to an ellipse.
- FIG. 7 is a diagram showing an example of gradually changing the shape and size of the light distribution range at the same time.
- FIG. 1 is a block diagram showing the functional configuration of the lighting device according to the first embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating an operation example of the lighting device.
- FIG. 3 is a conceptual diagram showing an example of contents stored in
- FIG. 8 is a diagram showing an example in which the size of the light distribution range is changed so as to be instantly switched.
- FIG. 9 is a diagram showing an example of instantaneously switching the shape of the light distribution range.
- FIG. 10 is a diagram showing an example of gradually changing the size and shape of the light distribution range.
- FIG. 11 is a flowchart illustrating an example of initial setting processing by the controller of the lighting device.
- FIG. 12 is a flowchart illustrating an example of processing by a control unit of the lighting device;
- FIG. 13 is a perspective view of the liquid crystal light distribution panel according to the embodiment.
- 14 is a plan view showing the wiring of the array substrate of the liquid crystal light distribution panel according to the embodiment.
- FIG. 15 is a plan view showing wiring of the counter substrate of the liquid crystal light distribution panel according to the embodiment.
- FIG. 16 is a plan view showing wiring of the liquid crystal light distribution panel according to the embodiment.
- 17 is a cross-sectional view taken along line IV-IV of FIG. 16.
- FIG. 18 is a schematic diagram showing the configuration of the liquid crystal light distribution section.
- FIG. 19 is a schematic diagram showing an example of light distribution control by light distribution control regions.
- FIG. 1 is a block diagram showing the functional configuration of a lighting device 100 according to the first embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating an operation example of the lighting device 100.
- lighting device 100 includes light source section 80 , liquid crystal light distribution section 700 , and control section 60 .
- the light source section 80 includes a light source 800 .
- Liquid crystal light distribution section 700 includes a plurality of liquid crystal light distribution panels 1-1 to 1-4.
- the illuminating device 100 is an illuminating device in which the irradiation range (light distribution range) of the light from the light source 800 of the light source unit 80 can be individually controlled using the liquid crystal light distribution unit 700 .
- the liquid crystal light distribution section 700 functions as a light distribution range setting section for setting the light distribution range of the light from the light source 800 .
- the liquid crystal light distribution unit 700 can realize a light distribution range H11 in which the light from the light source 800 is widely diffused and a light distribution range H12 in which the light from the light source 800 is narrowly diffused.
- the liquid crystal light distribution unit 700 includes a liquid crystal light distribution panel for p-wave polarization and a liquid crystal light distribution panel for s-wave polarization. A detailed configuration of the liquid crystal light distribution panel included in the liquid crystal light distribution unit 700 will be described later.
- control unit 60 includes a storage unit 61, an MCU (Micro Controller Unit) 62, an FPGA (Field Programmable Gate Array) 63, a D (Digital)/A (Analog) conversion unit 64, and a light source driving It has a unit 65 and a time information acquisition unit 66 .
- MCU Micro Controller Unit
- FPGA Field Programmable Gate Array
- D Digital
- A Analog
- the storage unit 61 stores the time and the light distribution range data in association with each other. The contents stored in the storage unit 61 will be described later.
- the MCU 62 can read the light distribution range data corresponding to the time from the storage section 61 .
- MCU 62 outputs various signals to FPGA 63 and light source driving section 65 .
- the MCU 62 controls each part of the lighting device 100 .
- the FPGA 63 performs information processing for controlling the operation of the liquid crystal light distribution section 700 under the control of the MCU 62 and outputs a signal indicating the result of the information processing to the D/A conversion section 64 .
- the D/A conversion unit 64 outputs analog signals for operating the plurality of liquid crystal light distribution panels 1-1 to 1-4 included in the liquid crystal light distribution unit 700 based on the digital signals from the FPGA 63. do.
- the configuration may consist of one circuit or may include multiple circuits.
- the light source drive unit 65 is a controller that performs ON/OFF control of the light source 800 included in the light source unit 80 and light emission intensity control when the light source unit 80 is ON under the control of the MCU 62 .
- the controller may be a single circuit or may include multiple circuits.
- the time information acquisition unit 66 acquires time information regarding the current time.
- the time information acquisition unit 66 may acquire time information from a clock unit (not shown) inside the lighting device 100 or may acquire time information from a communication network or the like outside the lighting device 100 .
- the control unit 60 reads from the storage unit 61 light distribution range data corresponding to the time information acquired by the time information acquisition unit 66 .
- the control unit 60 reads the light distribution range data from the storage unit 61 at regular time intervals.
- the control unit 60 controls the liquid crystal light distribution unit 700 based on the light distribution range data.
- the lighting device 100 configured as described above acquires time information by the time information acquisition unit 66, and reads the light distribution range data from the storage unit 61 based on the acquired time information.
- the light distribution range data includes data regarding the light distribution shape and data regarding the size.
- the illumination device 100 controls the liquid crystal light distribution section 700 so that the light from the light source 800 of the light source section 80 has the light distribution shape and size according to the read light distribution range data.
- FIG. 2 shows an operation example of the lighting device 100 installed on the ceiling of the room R.
- illustration of furniture and the like in the room R is omitted.
- the room R is provided with windows W1 and W2. Outside light enters the room R through the windows W1 and W2.
- the amount of outside light entering the room R varies depending on the time.
- the light distribution range of the light emitted from the lighting device 100 toward the floor F is changed.
- the illumination device 100 changes the light distribution range based on the time information. By changing the light distribution range, it is possible to maintain the same brightness in the room R at any time, or to achieve a desired brightness depending on the time.
- the light distribution ranges of the illumination device 100 are light distribution ranges H11, H12, H22 and H23.
- the shape of the floor F of the room R is rectangular.
- the light distribution ranges H11 and H12 are circular.
- the circle of the light distribution range H11 and the circle of the light distribution range H12 have a common center point P.
- the circle of the light distribution range H11 is larger than the circle of the light distribution range H12.
- the light distribution ranges H11 and H12 can be realized by irradiating light from lighting device 100 almost directly downward.
- the light distribution ranges H22 and H23 are elliptical.
- the elliptical shape of the light distribution range H22 and the elliptical shape of the light distribution range H22 have a common center point P.
- the major axis of the ellipse of the light distribution range H22 faces the diagonal corners CN1 and CN2 of the floor F.
- the major axis of the ellipse of the light distribution range H23 faces the diagonal corners CN3 and CN4 of the floor F.
- the illumination device 100 changes the light distribution range according to the time in order of the light distribution range H22, the light distribution range H23, the light distribution range H22, the light distribution range H11, and the light distribution range H12.
- the light distribution range H22, H23, and H23 change slowly and smoothly over time so as to illuminate the dark areas in the room R in accordance with the outside light from the windows W1 and W2.
- the light distribution range H11 is used to illuminate the room R widely
- the light distribution range H12 is used to illuminate the center of the room R.
- FIG. 3 is a conceptual diagram showing an example of contents stored in the storage unit 61 for realizing the operation of FIG.
- the storage unit 61 stores time and light distribution range data in association with each other. Specifically, the light distribution range data at time “6:00” and “light distribution range H22", the light distribution range data at time “9:00” and “light distribution range H23”, and the time “12:00” light distribution range data of "light distribution range H22", light distribution range data of time "15:00” and “light distribution range H11”, light distribution range data of time "18:00” and “light distribution range H12", are associated with each other and stored.
- the MCU 62 sequentially acquires time information.
- the MCU 62 reads the light distribution range data corresponding to the acquired time information from the storage section 61 . If the light distribution range data corresponding to the acquired time information is not stored in the storage unit 61 , the light distribution range data corresponding to time information close to the acquired time information is read from the storage unit 61 .
- the light distribution range data indicates the light distribution shape and size
- the MCU 62 calculates the panel voltage based on the light distribution shape and size.
- the panel voltage is the voltage applied to each of the liquid crystal light distribution panels 1-1 to 1-4 in the liquid crystal light distribution section 700.
- FIG. The FPGA 63 performs information processing for controlling the operation of the liquid crystal light distribution section 700 under the control of the MCU 62 and outputs a signal indicating the result of the information processing to the D/A conversion section 64 .
- An analog voltage resulting from the conversion by the D/A conversion section 64 is input to the liquid crystal light distribution section 700 .
- the liquid crystal light distribution panels 1-1 to 1-4 in the liquid crystal light distribution section 700 are controlled, and the distributed light is emitted toward the floor F.
- the light distribution range data of the "light distribution range H22" is read from the storage unit 61.
- elliptical light based on the light distribution range data of the light distribution range H22'' is irradiated toward the floor F.
- the light distribution range data of the "light distribution range H23" is read from the storage unit 61.
- elliptical light based on the light distribution range data of the "light distribution range H23” is emitted toward the floor F.
- the light distribution range data of the "light distribution range H22" is read from the storage unit 61.
- elliptical light based on the light distribution range data of the "light distribution range H22” is emitted toward the floor F.
- the light distribution range data of the "light distribution range H12" is read from the storage unit 61.
- circular light based on the light distribution range data of the "light distribution range H12” is emitted toward the floor F.
- FIG. 2 shows that
- the light distribution range data is sequentially read from the storage unit 61 based on the time information of the current time, and the light corresponding to the read light distribution range data is emitted toward the floor F.
- the light distribution range data By appropriately setting the light distribution range data, the brightness in the room can be made uniform regardless of the time of day.
- the brightness of the room R is kept as uniform as possible from sunrise to sunset.
- the basic configuration of the illumination device 100 of the second embodiment is the same as that of the first embodiment, and the storage contents of the storage unit 61 are different.
- FIG. 4 is a conceptual diagram showing an example of the contents stored in the storage unit 61 in the second embodiment.
- the storage unit 61 stores the time and the light distribution range data in association with each other. Specifically, the light distribution range data of time “6:00” and “light distribution range H6a” close to the sunrise time, the light distribution range data of time “8:00” and “light distribution range H8a”, and the time “10 :00” and “light distribution range H10a”, light distribution range data at time “12:00” and “light distribution range H12a”, time “14:00” and “light distribution range H14a” The light range data, the light distribution range data of time “16:00” and “light distribution range H16a”, and the light distribution range data of time "18:00” close to sunset time and "light distribution range H18a” are associated with each other.
- the liquid crystal light distribution unit 700 is controlled so as to irradiate light up to the walls that are larger than the rectangular floor and surround the floor. The same applies to the light distribution range H18a.
- control unit 60 controls the liquid crystal so that the distribution of brightness in the room R before the lighting is turned on has a light distribution range with a shape close to the shape of the dark part of the room R (indicated by hatching). It controls the light distribution unit 700 .
- the light distribution range of illumination that is, the light irradiation range (indicated by diagonal hatching) is changed over time.
- the initial value is determined as a light distribution range corresponding to each time every two hours of the day, and the time and the light distribution range data are associated and stored in advance in the storage unit 61 .
- This process is an initial setting process, which will be described later.
- N sets (N is an integer of 2 or more) in which time and light distribution range data are associated are stored in the storage unit 61 .
- the irradiation range of light can be changed according to the passage of time.
- the irradiation range of light can be changed in a more complicated manner. It is preferable that the shape of the light distribution range is changed smoothly.
- liquid crystal light distribution section 700 can flexibly change the light distribution shape and size.
- An example of changing the light distribution shape and size will be described below.
- FIG. 5 is a diagram showing an example of gradually changing the size of the light distribution range. As shown in FIG. 5, the voltage input to the liquid crystal light distribution section 700 can gradually change the emitted light from the light distribution range H1 to the light distribution range H2.
- FIG. 6 is a diagram showing an example of gradually changing the shape of the light distribution range from a circle to an ellipse. As shown in FIG. 6, the voltage input to the liquid crystal light distribution section 700 can gradually change the emitted light from the light distribution range H1 to the light distribution range H3.
- FIG. 7 is a diagram showing an example of gradually changing the shape and size of the light distribution range at the same time. As shown in FIG. 7, the voltage input to the liquid crystal light distribution section 700 can gradually change the emitted light from the light distribution range H1 to the light distribution range H4.
- FIG. 8 is a diagram showing an example in which the size of the light distribution range is changed so as to be instantly switched. As shown in FIG. 8, the voltage applied to the liquid crystal light distribution section 700 can gradually change the light distribution ranges H1, H1a, H1b, H1c, H1d, H1e, and H1f in order. .
- FIG. 9 is a diagram showing an example of instantaneously switching the shape of the light distribution range. As shown in FIG. 9, depending on the voltage input to the liquid crystal light distribution unit 700, the emitted light has a circular light distribution range H1, elliptical H2a and H2b, a circular light distribution range H2c, an elliptical H2d, H2e, and so on.
- FIG. 10 is a diagram showing an example of gradually changing the size and shape of the light distribution range. As shown in FIG. 10, according to the voltage input to the liquid crystal light distribution section 700, the emitted light is gradually changed in the order of circular light distribution ranges H1, H3a, H3b, H3c, H3d, H3e, and H3f. can be done.
- FIG. 11 is a flowchart showing an example of initial setting processing by the control unit 60 of the lighting device 100.
- a specific time and light distribution range data at that time are set (step S101).
- the light distribution range data includes data on the light distribution shape and data on the size, as described above.
- the time and light distribution range data are set by input means (not shown) such as a keyboard and mouse under control of the MCU 602 .
- the MCU 602 stores a set of the time and the set light distribution range data in the storage unit 61 (step S102).
- step S103 determines whether or not N or more pairs of time and light distribution range data have been set. In step S103, if the number is less than N (No in step S103), the MCU 602 returns to step S101 and continues processing. In step S103, if the number is N or more (Yes in step S103), the initial setting process by the MCU 602 ends.
- the MCU 62 acquires current time information from the time information acquisition unit 66 (step S201). Based on the acquired time information, the MCU 62 reads light distribution range data corresponding to a time close to the current time from the storage unit 61 (step S202).
- the MCU 62 determines the light distribution shape and size at the current time based on the light distribution range data read from the storage unit 61 (step S203).
- the MCU 62 calculates panel voltages to be applied to the liquid crystal light distribution panels 1-1 to 1-4 of the liquid crystal light distribution section 700 (step S204).
- the MCU 62 controls the liquid crystal light distribution panels 1-1 to 1-4 by applying the panel voltage calculated in step S204 (step S205).
- step S207 If the result of determination in step S206 is that the predetermined time has not elapsed (No in step S206), it is determined whether or not to end the process (step S207). As a result of the determination in step S207, if the process is not to end (No in step S207), the process returns to step S206 to continue the process. Thereby, the same light distribution range is maintained until a certain period of time elapses. That is, the light distribution shape and size are maintained until a certain period of time elapses.
- step S207 If the result of the determination in step S207 is to end the process (Yes in step S207), the process by the control unit 60 ends.
- the illumination device 100 controls the liquid crystal light distribution section 700 so that the light from the light source 800 of the light source section 80 has the light distribution shape and size according to the read light distribution range data.
- liquid crystal light distribution panel Next, the liquid crystal light distribution panels 1-1 to 1-4 included in the liquid crystal light distribution section 700 will be described with reference to FIGS. 13 to 17.
- FIG. 13 Next, the liquid crystal light distribution panels 1-1 to 1-4 included in the liquid crystal light distribution section 700 will be described with reference to FIGS. 13 to 17.
- FIG. 13 Next, the liquid crystal light distribution panels 1-1 to 1-4 included in the liquid crystal light distribution section 700 will be described with reference to FIGS. 13 to 17.
- FIG. 13 is a perspective view of the liquid crystal light distribution panel according to the embodiment.
- FIG. 14 is a plan view showing the wiring of the array substrate of the liquid crystal light distribution panel according to the embodiment, and is a view of the array substrate viewed from above.
- FIG. 15 is a plan view showing wiring of the counter substrate of the liquid crystal light distribution panel according to the embodiment, and is a view of the counter substrate viewed from above.
- FIG. 16 is a plan view showing the wiring of the liquid crystal light distribution panel according to the embodiment, and is a view of the liquid crystal light distribution panel viewed from above. 17 is a cross-sectional view taken along line IV-IV of FIG. 16.
- the direction along the x1 direction and the x2 direction is called the x direction.
- the x1 direction and the x2 direction are opposite.
- a direction along the y1 direction and the y2 direction is called a y direction.
- the y1 direction and the y2 direction are opposite.
- a direction along the z1 direction and the z2 direction is referred to as the z direction.
- the z1 direction and the z2 direction are opposite.
- the x-direction and the y-direction are orthogonal.
- a plane along which the x-direction and the y-direction extend is orthogonal to the z-direction.
- the liquid crystal light distribution panel 1 has an array substrate 2, a counter substrate 3, a liquid crystal layer 4, and a sealing material 30.
- the array substrate (first substrate) 2 is larger than the opposing substrate (second substrate) 3. That is, the area of the counter substrate (second substrate) 3 is smaller than the area of the array substrate (first substrate) 2 .
- the array substrate 2 has transparent glass 23 (see FIG. 14).
- the counter substrate 3 has a transparent glass 31 (see FIG. 15).
- the array substrate 2 and the counter substrate 3 are square when viewed from above, but the shape of the substrate according to the present invention is not limited to square.
- a first terminal group area 21 and a second terminal group area 22 are provided on the surface 2 a of the array substrate 2 .
- the first terminal group area 21 is located at the end on the y1 side of the surface 2a of the array substrate 2 .
- the second terminal group area 22 is located at the end of the surface 2a of the array substrate 2 on the x2 side.
- the first terminal group area 21 and the second terminal group area 22 have an L shape when viewed from above.
- the first terminal group 10 is arranged in the first terminal group area 21
- the second terminal group 20 is arranged in the second terminal group area 22 . Since the area of the counter substrate 3 is smaller than that of the array substrate 2, the first terminal group 10 and the second terminal group 20 are exposed. Further, the first terminal group 10 and the second terminal group 20 are also simply referred to as terminal portions.
- the first terminal group 10 includes a first terminal 101, a second terminal 102, a third terminal 103, a fourth terminal 104, a first pad 105, and a second terminal.
- Pad 106 , third pad 107 , fourth pad 108 , fifth pad 109 , sixth pad 110 , seventh pad 111 and eighth pad 112 are included.
- the seventh pad 111 and the eighth pad 112 are arranged side by side in order from the x1 side to the x2 side in the horizontal direction.
- the first pad 105 and the eighth pad 112 are electrically connected via the lead wire 113 .
- the second pad 106 and the seventh pad 111 are electrically connected via the lead wire 113 .
- the third pad 107 and the sixth pad 110 are electrically connected via the lead wire 113 .
- the fourth pad 108 and the fifth pad 109 are electrically connected via the lead wire 113 .
- the second terminal group 20 includes a fifth terminal 201, a sixth terminal 202, a seventh terminal 203, an eighth terminal 204, a ninth pad 205, and a tenth terminal. It includes a pad 206 , an eleventh pad 207 , a twelfth pad 208 , a thirteenth pad 209 , a fourteenth pad 210 , a fifteenth pad 211 and a sixteenth pad 212 .
- the fifteenth pad 211 and the sixteenth pad 212 are arranged side by side in order in the front-rear direction from the y2 side to the y1 side.
- the ninth pad 205 and the sixteenth pad 212 are electrically connected via a lead wire 213 .
- the tenth pad 206 and fifteenth pad 211 are electrically connected via a lead wire 213 .
- the eleventh pad 207 and the fourteenth pad 210 are electrically connected via a lead wire 213 .
- the twelfth pad 208 and the thirteenth pad 209 are electrically connected via a lead wire 213 .
- the counter substrate 3 is arranged above the array substrate 2 (on the z1 side).
- a sealing material 30 and a liquid crystal layer 4 are provided between the opposing substrate 3 and the array substrate 2 .
- the sealing material 30 is annularly provided along the outer periphery of the opposing substrate 3 , and the inside of the sealing material 30 is filled with the liquid crystal layer 4 .
- the area where the liquid crystal layer 4 is provided is the active area, the outside of the liquid crystal layer 4 is the frame area, and the first terminal group area 21 and the second terminal group area 22 are terminal areas.
- the wiring of the array substrate 2 and the counter substrate 3 will be described.
- the wiring is provided on the front surface of the substrate and the back surface. That is, the surface on which the wiring is provided is defined as the front surface, and the surface opposite to the front surface is defined as the back surface.
- wiring is provided on the upper surface 2a of the front surface 2a and the rear surface 2b of the array substrate 2, and wiring is provided on the lower surface 3a of the front surface 3a and the rear surface 3b of the counter substrate 3. is provided.
- the surface 2a of the array substrate 2 and the surface 3a of the counter substrate 3 are arranged to face each other with the liquid crystal layer 4 interposed therebetween.
- the wiring 24 and the first electrode 25 are provided on the surface 2a of the transparent glass 23 of the array substrate 2.
- the first terminal 101 and the fifth terminal 201 are electrically connected via the wiring 24 .
- the second terminal 102 and the sixth terminal 202 are electrically connected via the wiring 24 .
- the third terminal 103 and the seventh terminal 203 are electrically connected via the wiring 24 .
- the fourth terminal 104 and the eighth terminal 204 are electrically connected via the wiring 24 .
- a plurality of first electrodes 25 are connected to the wiring 24 that connects the second terminal 102 and the sixth terminal 202 .
- a plurality of first electrodes 25 are connected to the wiring 24 that connects the third terminal 103 and the seventh terminal 203 .
- the wiring 24 is provided with connecting portions C1 and C2.
- the wiring 32 and the second electrode 33 are provided on the surface 3a of the counter substrate 3. As shown in FIG. Specifically, wirings 32 are provided on the y1 side and the y2 side, respectively. The wiring 32 extends in the x direction. A second electrode 33 is electrically connected to the wiring 32 . The second electrodes 33 extend in the y direction. The wiring 32 is provided with connection portions C3 and C4. Although the number of the first electrodes 25 and the number of the second electrodes 33 are eight in the examples shown in FIGS. It does not indicate the number of two electrodes 33 . The number of the first electrodes 25 and the number of the second electrodes 33 may be two or more, and naturally may be nine or more.
- the opposing substrate 3 is arranged above the array substrate 2 with a space therebetween.
- a liquid crystal layer 4 is filled between the array substrate 2 and the counter substrate 3 .
- the connection portion C1 of the array substrate 2 and the connection portion C3 of the counter substrate 3 are electrically connected via a conductive column (not shown).
- the connection portion C2 of the array substrate 2 and the connection portion C4 of the counter substrate 3 are electrically connected via a conductive column (not shown).
- the first terminal 101, the second terminal 102, the third terminal 103, the fourth terminal 104, the first pad 105, the second pad 106, the third pad 107, and the fourth pad 108 are , can be electrically connected to an FPC (Flexible Printed Circuits) 40 indicated by a two-dot chain line.
- the plurality of liquid crystal light distribution panels 1-1 to 1-4 are connected to the D/A converter 64 via, for example, FPCs 40 individually provided.
- FIG. 18 is a schematic diagram showing the configuration of the liquid crystal light distribution section 700.
- the liquid crystal light distribution section 700 has, for example, four liquid crystal light distribution panels 1-1 to 1-4 stacked in the z direction.
- the four liquid crystal light distribution panels 1-1 to 1-4 are the liquid crystal light distribution panels 1-1 to 1-4 described with reference to FIGS. 13 to 17.
- FIG. The four liquid crystal light distribution panels 1-1 to 1-4 are laminated so that the respective liquid crystal layers 4 are overlapped and the arrangement of the plurality of first electrodes 25 and the plurality of second electrodes 33 of each are overlapped in a plan view. be done.
- a planar viewpoint is a viewpoint that views a plane along the x-direction and the y-direction from the front.
- a region in which the plurality of first electrodes 25 and the plurality of second electrodes 33 are arranged functions as a light distribution control region LDA shown in FIG. 19 and the like, which will be described later.
- FIG. 19 is a schematic diagram showing an example of light distribution control by the light distribution control area LDA.
- the light distribution control area LDA is an area in which the plurality of first electrodes 25 and the plurality of second electrodes 33 are arranged in plan view. That is, the light distribution control area LDA includes a plurality of electrodes extending in the x direction and arranged in the y direction, and a plurality of electrodes extending in the y direction and arranged in the x direction.
- the electrodes extending in the x direction and arranged in the y direction are, for example, the first electrodes 25 .
- the electrodes extending in the y direction and arranged in the x direction are, for example, the second electrodes 33 .
- the liquid crystal light distribution unit 700 has four liquid crystal light distribution panels 1-1 to 1-4 that overlap in the z direction, there are a plurality of electrodes extending in the x direction and arranged in the y direction, and a plurality of electrodes extending in the y direction and arranged in the x direction. A plurality of electrodes arranged in the direction are quadruple in the z direction.
- a plurality of electrodes extending in the x-direction and arranged in the y-direction and a plurality of electrodes extending in the y-direction and arranged in the x-direction of the four liquid crystal light distribution panels 1-1 to 1-4 of the liquid crystal light distribution section 700 By controlling the potential of each of the electrodes, the light distribution control area LDA can be changed to the liquid crystal light distribution section 700, for example, as in the examples E1, E2, E3, and E4 of the "example of light distribution pattern" shown in FIG. It is possible to control the transmission range and the degree of transmission of light from one side to the other side.
- Example E1 in FIG. 19 shows the light source when all the potentials of the plurality of electrodes extending in the x direction and aligned in the y direction and the plurality of electrodes extending in the y direction and aligned in the x direction are 0 volts (V).
- FIG. 4 is a schematic diagram showing a state in which the light distribution control area LDA is viewed from the opposite side of (for example, the light source 800) from a planar viewpoint. In example E1, the light from the light source is transmitted through the light distribution control area LDA almost as it is.
- FIG. 10 is a schematic diagram showing a state in which the light distribution control area LDA is seen from the opposite side of the light source (for example, the light source 800) from a planar viewpoint when the potential exceeds the potential.
- the light distribution control area LDA in the state of controlling .
- the potential of a plurality of electrodes extending in the x direction and arranged in the y direction exceeds 0 volt (V), and the potential of the plurality of electrodes extending in the y direction and arranged in the x direction is 0 volt ( V)
- the light distribution control area LDA is viewed from the opposite side of the light source (for example, the light source 800) from a plan view.
- the light from the light source spreads relatively greatly in the y direction, but does not spread so much in the x direction. , shows the light distribution control area LDA in the state of controlling .
- Example E4 is a light source when all the potentials of the plurality of electrodes extending in the x-direction and aligned in the y-direction and the plurality of electrodes extending in the y-direction and aligned in the x-direction are potentials exceeding 0 volts (V).
- FIG. 4 is a schematic diagram showing a state in which the light distribution control area LDA is viewed from the opposite side of (for example, the light source 800) from a planar viewpoint.
- the light from the light source is largely blocked by the light distribution control area LDA, so that when viewed from the opposite side of the light source across the light distribution control area LDA, the overall state is dark.
- a light distribution control area LDA is shown.
- the light distribution control area LDA has two or more electrodes extending in the x direction and aligned in the y direction and two or more electrodes extending in the y direction and aligned in the x direction from a plan view. It is good if there is Here, one light distribution control area LDA has m electrodes extending in the x direction and arranged in the y direction, and n electrodes extending in the y direction and arranged in the x direction. This is the first condition. In one liquid crystal light distribution panel 1-1 to 1-4, the number of electrodes (eg, first electrodes 25) extending in the x direction and arranged in the y direction is m ⁇ p.
- a second condition is that the number of electrodes (for example, second electrodes 33) arranged in the x direction is n ⁇ q.
- the liquid crystal light distribution section 700 can set p light distribution control areas LDA in the x direction and q light distribution control areas LDA in the y direction in a matrix.
- m, n, p, and q are natural numbers of 2 or more.
- the entire active area (the area where the liquid crystal layer 4 is provided) of one liquid crystal light distribution panel from a planar viewpoint may be set as one light distribution control area LDA.
- examples E1, E2, E3, and E4 shown in FIG. 19 particularly show the difference in the shape of the light distribution range from the plane viewpoint due to the potential control.
- the relationship between the potential applied to the first electrode 25 and the potential applied to the second electrode 33 determines the shape of the light transmission range and the size of the light transmission range. can be controlled more flexibly. With this control, the shape and size of the emitted light can be changed.
- a light source unit that emits light toward the floor surface of the room; a storage unit that stores light distribution range data related to the range of light irradiation in the room in association with time information; a time information acquisition unit that acquires time information about the current time; a light distribution range setting unit for setting a light distribution range of light from the light source unit; and a control unit that reads light distribution range data corresponding to the time information acquired by the time information acquisition unit from the storage unit and controls the light distribution range setting unit based on the light distribution range data.
- the light distribution range setting unit includes a liquid crystal light distribution panel for p-wave polarization and a liquid crystal light distribution panel for s-wave polarization,
- the p-wave polarized liquid crystal light distribution panel and the s-wave polarized liquid crystal light distribution panel are laminated, applying a signal based on the light to be irradiated to the p-wave polarized liquid crystal light distribution panel and the s-wave polarized light control panel;
- By irradiating the light emitted from the light source unit through the liquid crystal light distribution panel for p-wave polarization and the liquid crystal light distribution panel for s-wave polarization By irradiating the light emitted from the light source unit through the liquid crystal light distribution panel for p-wave polarization and the liquid crystal light distribution panel for s-wave polarization,
- the lighting device according to ⁇ 1>, wherein the light distribution range is set based on the light distribution range data read by the control unit.
- the light distribution range data includes a light distribution shape and size
- the lighting device according to ⁇ 2>, wherein the control unit applies a voltage to the liquid crystal light distribution panel based on the light distribution shape and the size.
- the light distribution range data stored in the storage unit is data relating to the light distribution shape and size of the light to be irradiated, and the light distribution range setting unit sets the light distribution range so that the light to be irradiated has the light distribution shape and size.
- the lighting device according to any one of ⁇ 1> to ⁇ 3>, wherein the light distribution range is set to .
- ⁇ 5> The lighting device according to any one of ⁇ 1> to ⁇ 4>, wherein the control unit reads light distribution range data corresponding to a time close to the current time from the storage unit.
- ⁇ 6> The lighting device according to any one of ⁇ 1> to ⁇ 5>, wherein the storage unit stores the light distribution range data in association with time information from sunrise time to sunset time.
- ⁇ 7> The lighting device according to any one of ⁇ 1> to ⁇ 6>, wherein the control unit controls the light distribution range setting unit so that the light distribution range has a shape close to the shape of the dark part of the room. .
- liquid crystal light distribution unit 1-1 to 1-4 liquid crystal light distribution panel 60 control unit 61 storage unit 62 MCU 63 FPGAs 64 D/A conversion unit 65 light source driving unit 66 time information acquisition unit 80 light source unit 100 lighting device 700 liquid crystal light distribution unit 800 light sources H1 to H4, H1a to H1f, H2a-H2e, H3a-H3f, H11, H12, H22, H23 Light distribution range
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Abstract
Description
図1は、本開示の第1実施形態による照明装置100の機能構成を示すブロック図である。図2は、照明装置100の動作例を示す図である。図1において、照明装置100は、光源部80と、液晶配光部700と、制御部60と、を有する。光源部80は、光源800を含む。液晶配光部700は、複数の液晶配光パネル1-1から1-4を含む。
図3は、図2の動作を実現するための記憶部61の記憶内容の例を示す概念図である。図3に示すように、記憶部61は、時刻と、配光範囲データとを対応付けて記憶する。具体的には、時刻「6:00」と「配光範囲H22」の配光範囲データ、時刻「9:00」と「配光範囲H23」の配光範囲データ、時刻「12:00」と「配光範囲H22」の配光範囲データ、時刻「15:00」と「配光範囲H11」の配光範囲データ、時刻「18:00」と「配光範囲H12」の配光範囲データ、をそれぞれ対応付けて記憶する。
次に、本開示の第2実施形態について説明する。第2実施形態においては、日の出時刻から日の入り時刻まで、部屋Rの明るさをできるだけ均一に保つ。第2実施形態の照明装置100の基本構成は、第1実施形態と同じであり、記憶部61の記憶内容が異なる。
上記のほか、液晶配光部700によって、配光形状やサイズを柔軟に変化させることができる。以下、配光形状やサイズを変化させる例について説明する。
図11は、照明装置100の制御部60による初期設定処理の例を示すフローチャートである。図11に示すように、最初に、特定時刻とその時刻の配光範囲データとを設定する(ステップS101)。配光範囲データは、上述したように、配光形状に関するデータとサイズに関するデータとを含む。時刻および配光範囲データについては、MCU602の制御の下、キーボードやマウスなどの図示しない入力手段によって設定する。MCU602は、時刻と、設定した配光範囲データとの組を記憶部61に保存する(ステップS102)。
図12は、照明装置100の制御部60による処理の例を示すフローチャートである。図12は、主に、MCU62による処理の内容を示す。
次に、液晶配光部700に含まれる液晶配光パネル1-1から1-4について、図13から図17を参照して説明する。
<1>
部屋の床面に向かって光を出射する光源部と、
部屋内における、光を照射する範囲に関する配光範囲データを時刻情報と対応付けて記憶する記憶部と、
現在の時刻に関する時刻情報を取得する時刻情報取得部と、
前記光源部からの光の配光範囲を設定するための配光範囲設定部と、
前記時刻情報取得部が取得した時刻情報に対応する配光範囲データを前記記憶部から読み出し、前記配光範囲データに基づいて前記配光範囲設定部を制御する制御部とを含む照明装置。
<2>
前記配光範囲設定部は、p波偏光用の液晶配光パネルと、s波偏光用の液晶配光パネルとを含み、
前記p波偏光用の液晶配光パネルと前記s波偏光用の液晶配光パネルとは積層されており、
照射する光に基づく信号を、前記p波偏光用の液晶配光パネルと前記s波偏光用の調光パネルに与え、
前記光源部から出射される光を、前記p波偏光用の液晶配光パネルと前記s波偏光用の液晶配光パネルとを通して、照射することにより、
前記制御部が読み出した前記配光範囲データに基づいて前記配光範囲を設定する<1>に記載の照明装置。
<3>
前記配光範囲データは、配光形状およびサイズを含み、
前記制御部は、前記配光形状および前記サイズに基づいて、前記液晶配光パネルに電圧を印加する<2>に記載の照明装置。
<4>
前記記憶部に記憶される前記配光範囲データは、照射する光の配光形状およびサイズに関するデータであり、前記配光範囲設定部は、照射する光が前記配光形状および前記サイズになるように前記配光範囲を設定する<1>から<3>のいずれか1つに記載の照明装置。
<5>
前記制御部は、現在の時刻に近い時刻に対応する配光範囲データを前記記憶部から読み出す<1>から<4>のいずれか1つに記載の照明装置。
<6>
前記記憶部は、配光範囲データを、日の出時刻から日の入り時刻までの時刻情報と対応付けて記憶する<1>から<5>のいずれか1つに記載の照明装置。
<7>
前記制御部は、前記部屋の暗い部分の形状に近い形状の配光範囲になるように、前記配光範囲設定部を制御する<1>から<6>のいずれか1つに記載の照明装置。
60 制御部
61 記憶部
62 MCU
63 FPGA
64 D/A変換部
65 光源駆動部
66 時刻情報取得部
80 光源部
100 照明装置
700 液晶配光部
800 光源
H1~H4、H1a~H1f、
H2a~H2e、H3a~H3f、
H11、H12、H22、H23 配光範囲
Claims (7)
- 部屋の床面に向かって光を出射する光源部と、
部屋内における、光を照射する範囲に関する配光範囲データを時刻情報と対応付けて記憶する記憶部と、
現在の時刻に関する時刻情報を取得する時刻情報取得部と、
前記光源部からの光の配光範囲を設定するための配光範囲設定部と、
前記時刻情報取得部が取得した時刻情報に対応する配光範囲データを前記記憶部から読み出し、前記配光範囲データに基づいて前記配光範囲設定部を制御する制御部とを含む照明装置。 - 前記配光範囲設定部は、p波偏光用の液晶配光パネルと、s波偏光用の液晶配光パネルとを含み、
前記p波偏光用の液晶配光パネルと前記s波偏光用の液晶配光パネルとは積層されており、
照射する光に基づく信号を、前記p波偏光用の液晶配光パネルと前記s波偏光用の調光パネルに与え、
前記光源部から出射される光を、前記p波偏光用の液晶配光パネルと前記s波偏光用の液晶配光パネルとを通して、照射することにより、
前記制御部が読み出した前記配光範囲データに基づいて前記配光範囲を設定する請求項1に記載の照明装置。 - 前記配光範囲データは、配光形状およびサイズを含み、
前記制御部は、前記配光形状および前記サイズに基づいて、前記液晶配光パネルに電圧を印加する請求項2に記載の照明装置。 - 前記記憶部に記憶される前記配光範囲データは、照射する光の配光形状およびサイズに関するデータであり、前記配光範囲設定部は、照射する光が前記配光形状および前記サイズになるように前記配光範囲を設定する請求項1から請求項3のいずれか1つに記載の照明装置。
- 前記制御部は、現在の時刻に近い時刻に対応する配光範囲データを前記記憶部から読み出す請求項1から請求項3のいずれか1つに記載の照明装置。
- 前記記憶部は、配光範囲データを、日の出時刻から日の入り時刻までの時刻情報と対応付けて記憶する請求項1から請求項3のいずれか1つに記載の照明装置。
- 前記制御部は、前記部屋の暗い部分の形状に近い形状の配光範囲になるように、前記配光範囲設定部を制御する請求項1から請求項3のいずれか1つに記載の照明装置。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2025182238A1 (ja) * | 2024-02-27 | 2025-09-04 | 株式会社ジャパンディスプレイ | 照明装置およびその駆動方法 |
| WO2025216095A1 (ja) * | 2024-04-11 | 2025-10-16 | 株式会社ジャパンディスプレイ | 照明装置 |
| WO2025249065A1 (ja) * | 2024-05-31 | 2025-12-04 | 株式会社ジャパンディスプレイ | 照明装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001281054A (ja) * | 2000-03-31 | 2001-10-10 | Mitsubishi Electric Corp | 照度検知装置 |
| JP2016051608A (ja) * | 2014-08-29 | 2016-04-11 | 東芝ライテック株式会社 | 照明装置および照明制御システム |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007335101A (ja) | 2006-06-12 | 2007-12-27 | Koizumi Lighting Technology Corp | 照明装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001281054A (ja) * | 2000-03-31 | 2001-10-10 | Mitsubishi Electric Corp | 照度検知装置 |
| JP2016051608A (ja) * | 2014-08-29 | 2016-04-11 | 東芝ライテック株式会社 | 照明装置および照明制御システム |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025182238A1 (ja) * | 2024-02-27 | 2025-09-04 | 株式会社ジャパンディスプレイ | 照明装置およびその駆動方法 |
| WO2025216095A1 (ja) * | 2024-04-11 | 2025-10-16 | 株式会社ジャパンディスプレイ | 照明装置 |
| WO2025249065A1 (ja) * | 2024-05-31 | 2025-12-04 | 株式会社ジャパンディスプレイ | 照明装置 |
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| JP7603194B2 (ja) | 2024-12-19 |
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