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WO2011006835A1 - Composant à diodes électroluminescentes, module à diodes électroluminescentes et dispositif d’affichage - Google Patents

Composant à diodes électroluminescentes, module à diodes électroluminescentes et dispositif d’affichage Download PDF

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Publication number
WO2011006835A1
WO2011006835A1 PCT/EP2010/059835 EP2010059835W WO2011006835A1 WO 2011006835 A1 WO2011006835 A1 WO 2011006835A1 EP 2010059835 W EP2010059835 W EP 2010059835W WO 2011006835 A1 WO2011006835 A1 WO 2011006835A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
emitting diode
component
lens
display device
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/EP2010/059835
Other languages
German (de)
English (en)
Inventor
Michael Zitzlsperger
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.)
Ams Osram International GmbH
Original Assignee
Osram Opto Semiconductors GmbH
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
Application filed by Osram Opto Semiconductors GmbH filed Critical Osram Opto Semiconductors GmbH
Publication of WO2011006835A1 publication Critical patent/WO2011006835A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of semiconductor or other solid state devices
    • H01L25/03—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00
    • H01L25/0753—Assemblies consisting of a plurality of semiconductor or other solid state devices all the devices being of a type provided for in a single subclass of subclasses H10B, H10D, H10F, H10H, H10K or H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H10H20/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/307—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using fly-eye lenses, e.g. arrangements of circular lenses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses

Definitions

  • Light-emitting diode component, light-emitting diode module and display device The present application relates to a light-emitting diode component, a light-emitting diode module and a display device.
  • a light-emitting diode component with a first light-emitting diode, a second light-emitting diode and a lens is specified.
  • the lens has a light entry surface and a light exit surface.
  • the light-emitting diode component is, in particular, an electronic component-more precisely an optoelectronic component-for example a surface-mountable component (SMD, surface-mount device).
  • SMD surface-mountable component
  • the light exit surface or the light exit surface and the light entry surface is / are curved according to at least one embodiment such that the lens is a line focus having.
  • a lens which has a line focus which is also called "focal line”
  • a parallel bundle of rays impinging on the light exit surface is combined on the line focus.
  • the stroke focus is in particular a distance, that is to say a straight line.
  • Image inaccuracies has the line or track a finite width.
  • Distance can therefore mean that a longitudinal extent is greater than a transverse extent of the line focus.
  • the longitudinal extent exceeds the transverse extent by at least a factor of 2, preferably by at least a factor of 3 or by at least a factor of 5.
  • the line focus and the light-emitting diodes are preferably located on the same side of FIG.
  • the light exit surface has the shape of a lateral surface of a segment of a cylinder.
  • the cylinder is in one embodiment a straight cylinder.
  • the longitudinal axis of the cylinder in this case runs in particular parallel to
  • the lens is a cylindrical lens.
  • the cylinder has a circular or elliptical cross section.
  • the light exit surface has the shape of a lateral surface of a half-cylinder.
  • a half cylinder is understood as meaning one of the two sections which, during the division of the cylinder, arise along a plane containing the longitudinal axis.
  • the light exit surface which is the lateral surface of a half-cylinder, has two parallel edges lying in a common plane with the longitudinal axis of the cylinder.
  • the light entry surface is not arched.
  • a non-curved light entry surface is in particular a substantially planar surface.
  • light entry surface may, for example, have recesses for receiving the first and the second light emitting diode.
  • the light entry surface directly adjoins the first light-emitting diode and / or the second light-emitting diode.
  • the first and the second light emitting diode are preferably arranged at least partially in each case in one of the depressions.
  • the first and the second light-emitting diode are at least locally reshaped with the lens, in particular encapsulated or encapsulated.
  • the light entry surface may also be spaced from the first light emitting diode and the second light emitting diode.
  • the first light-emitting diode, the second light-emitting diode and the lens are arranged in the light-emitting diode component according to at least one embodiment such that the light entry surface faces the light emitting diodes and the line focus is arranged in plan view of the light exit surface between the first and the second light emitting diode.
  • the lens completely covers the first light-emitting diode and the second light-emitting diode, in particular in a plan view of the light exit surface.
  • the first and the second light-emitting diodes are associated, in particular, with a common lens which covers the first and second light-emitting diodes in a plan view of the light exit surface.
  • a focal plane of the lens which contains the line focus, extends through the first light-emitting diode and the second light-emitting diode.
  • the focal plane includes a light exit surface of the first light emitting diode and / or a light exit surface of the second light emitting diode.
  • the second light-emitting diode is in particular arranged mirror-symmetrically with respect to the first light-emitting diode with respect to a mirror plane extending through the line focus and the light exit surface.
  • the mirror plane is perpendicular to the focal plane.
  • the first and second LEDs are preferably spaced from the mirror plane.
  • the light-emitting diode component contains one or more third light-emitting diodes.
  • the third light-emitting diode overlaps in particular laterally with the
  • the third light-emitting diode is in particular associated with the same lens as the first and the second
  • the focal plane of the lens passes through the third
  • LED for example, it contains a
  • Light emitting diode component seen in plan view the shape of an ellipse.
  • the lens points, in
  • the first light-emitting diode, the second light-emitting diode and optionally the third light-emitting diode each have at least one light-emitting diode chip. In one embodiment, the first light-emitting diode, the second light-emitting diode and / or the third
  • Light emitting diode in each case a plurality of LED chips, which emit light with an emission maximum at different wavelengths.
  • the light-emitting diode chips are arranged in one embodiment on a common component carrier. Alternatively or
  • first and / or the second and / or the third light-emitting diode can each have a light-emitting diode support on which the respective light-emitting diode chip (s) of the first, second or third light-emitting diode is attached
  • the one or more light-emitting diode carriers are preferably mounted on the common component carrier.
  • the LED chips are encapsulated in a further embodiment with the lens.
  • the lens is at this
  • Embodiment in particular the component envelope or a part of the component envelope of the light-emitting diode component is.
  • Each light-emitting diode in particular each light-emitting diode chip, can be controlled individually in a preferred development.
  • the operating current with which the respective light-emitting diode or the respective light-emitting diode chip is supplied during operation of the light-emitting diode component can be set independently of the operating current of the other light-emitting diodes or of the other light-emitting diode chips.
  • the first light-emitting diode, the second light-emitting diode and / or the third light-emitting diode each contain a red light-emitting diode chip and / or a green light-emitting diode chip and / or a blue LED chip.
  • a "red” light-emitting diode chip is understood to be a light-emitting diode chip which has an emission maximum with a wavelength in the red spectral range.
  • a "green” LED chip has an emission maximum with a wavelength in the green spectral range and a "blue” LED chip has an emission maximum with a wavelength in the blue spectral range.
  • the light-emitting diode chips of the first light-emitting diode, the light-emitting diode chips of the second light-emitting diode and / or the light-emitting diode chips of the third light-emitting diode are each arranged in a row which runs parallel to the light-emitting diode
  • LED chips of the first LED the same distance from the line focus and / or each of the LED chips of the second LED has the same distance to the line focus and / or each of the LED chips of the third LED has the same distance to the line focus.
  • the light-emitting diode component-in particular by means of the positioning of the first light-emitting diode and the second light-emitting diode under the common lens- is advantageously designed such that not all light-emitting diodes are simultaneously visible from certain viewing angles. For example, when observing the component at an observation angle from a first emission angle range, only the first light-emitting diode is visible, when observed at an observation angle from a second emission angle range, only the second light-emitting diode is visible. If the component has a third light-emitting diode, it is preferably included
  • the light-emitting diode component is advantageously designed to be exclusively or at least in a first emission angle range
  • Light emitting diode it is preferably designed to be in a third, different from the first and second
  • the angle of emission is in particular the angle of a light beam emitted by the light-emitting diode component from the light exit surface of the lens to the mirror plane.
  • the first, optionally the third and the second emission angle range follow one another in an angular direction with respect to an axis of rotation containing the line focus in this order.
  • the first, the second and possibly the third emission angle range are disjoint.
  • the first light-emitting diode, the second light-emitting diode and possibly the third light-emitting diode emit light with different colors during operation of the component.
  • the component is advantageously designed to cause in each case a different color impression when viewed under the first, the second and optionally the third emission angle range.
  • the light intensity emitted by the component in the first emission angle range is determined by the emission characteristics of the first light-emitting diode, while the light intensity emitted in the second or third emission angle range is determined by the emission characteristics of the second and third light-emitting diodes. In this way, the component in the different emission directions can emit light with different light intensity as an alternative or in addition to different colors.
  • a light-emitting diode module which has a
  • a plurality of light emitting diode components according to at least one of the embodiments described above.
  • Light emitting diode module has in particular a plurality of identical light-emitting diode components.
  • the light-emitting diode components are preferably arranged such that the line foci of the respective lenses of the individual light-emitting diode components run parallel to one another.
  • Light-emitting diode components are in particular arranged such that in plan view of the light exit surfaces in a direction transverse, in particular perpendicular, to the Strichfokussen first light-emitting diodes and second LEDs follow one another alternately.
  • the light-emitting diode module is in particular designed to radiate the light emitted by the first light-emitting diodes into a common first emission angle range, to radiate the light emitted by the second light-emitting diodes into a common second emission angle range, and optionally to emit the light emitted by the third light emitting diodes in a common third emission angle range.
  • An observer viewing the light-emitting diode module at an angle from the common first emission angle range thus perceives the emission of the first light-emitting diodes, while an observer viewing the light-emitting diode component at an angle from the second emission angle range perceives and possibly emits the emission of the second light emitting diodes Observer observing the light emitting diode device at an angle from the third emission angle range, the emission of the third light-emitting diodes perceives.
  • the component spacing can be freely selected with advantage.
  • it is not predetermined by an optical grid of a multiple lens.
  • Different light-emitting diode components of the light-emitting diode module can advantageously have different distances from each other.
  • the lenses can be aligned in the manufacture of the components in a simple manner to the LED chips.
  • a satisfactory alignment of the light-emitting diode chips to the lenses in the present light-emitting diode module is advantageous over a subsequent arrangement of a lens array over the lens Light-emitting diodes simplified.
  • the risk of insufficient accuracy in the positioning of the lenses relative to the LED chips is advantageously reduced in this way.
  • the light-emitting diode module the
  • Light-emitting diode components arranged in rows and columns With such an arrangement, the line focuses of the lenses of each light emitting diode component arranged in a column lengthen each other. In other words, the focal lines of the lenses of the respective light-emitting diode components arranged in a column are successive sections of a common straight line.
  • a display device with a light-emitting diode module is also provided.
  • the display device is expediently provided to display first information in a first emission angle range by means of the first light-emitting diodes and to display a second information by means of the second light-emitting diodes at a second emission angle range different from the first one by means of the second light-emitting diodes.
  • the display device is provided in a third, different from the first and the second
  • the first information, the second information and optionally the third information are preferably different from each other.
  • the light-emitting diode components represent, for example, individual pixels of the display device.
  • the light-emitting diode components can be controlled individually.
  • the display device is designed to display a first partial image by means of the first light-emitting diodes, which displays, for example, the first information, and to emit the first partial image in the common first emission angle range.
  • the display device is in particular also designed to form a second partial image by means of the second light-emitting diodes representing, for example, the second information, and to emit the second partial image in the common second emission angle range.
  • the display device may be configured to display, by means of the third light-emitting diodes, a third partial image which, for example, indicates the third information, and to emit the third partial image in the common third emission angle range.
  • a third partial image which, for example, indicates the third information
  • the display device may be configured to display, by means of the third light-emitting diodes, a third partial image which, for example, indicates the third information, and to emit the third partial image in the common third emission angle range.
  • the partial images can, for example, represent different symbols.
  • the first, second and possibly the third partial image may each be a traffic sign. The viewer in this way advantageously takes advantage of the viewing angle under which he views the display device that was different traffic signs.
  • the first and the second field are two stereoscopic fields.
  • the display device is provided in particular for displaying the other of the two stereoscopic fields to the left eye of the viewer of one of the two stereoscopic fields and the right eye. In this way, with the display device at the observer the impression of spatial depth of the display of Device displayed image.
  • the two stereoscopic fields in particular show the same object from two slightly different viewing directions.
  • the display device is a light signal system.
  • the light signal system is designed to change the view of the observer when changing its position relative to the display device from the first emission angle range to the second emission angle range without changing its operating state first information, such as a red light signal to the second information, such as a green light signal to convey.
  • FIG. 1A a schematic cross section through a light-emitting diode component according to a first exemplary embodiment
  • FIG. 1B a schematic side view of the light-emitting diode component according to the first exemplary embodiment
  • FIG. 2A a schematic side view of a light-emitting diode component according to a second exemplary embodiment
  • FIG. 2B a schematic plan view of the light-emitting diode component according to the second exemplary embodiment
  • Figure 4B a schematic plan view of a variant of
  • FIG. 5A a schematic cross section through a display device according to a first exemplary embodiment
  • FIG. 5B which is shown by the display device of FIG. 5A in FIG.
  • FIG. 6 shows a schematic cross section through a display device according to a second exemplary embodiment
  • FIG. 7A a schematic side view of a light-emitting diode component according to a further exemplary embodiment
  • FIG. 7B shows a schematic plan view of the light-emitting diode component according to FIG. 7A.
  • identical, similar or similar elements are provided with the same reference numerals.
  • the figures and the proportions of the elements shown in the figures with each other are not to be considered to scale. Rather, individual elements may be exaggerated in size for better representability and / or better understanding.
  • FIG. 1A shows a schematic cross section through a light-emitting diode component according to a first exemplary embodiment.
  • FIG. 1B shows a schematic side view of the light-emitting diode component.
  • the light-emitting diode component has a first light-emitting diode 1 and a second light-emitting diode 2.
  • the component has a lens 3.
  • the light emitting diodes 1 and 2 are preferably mounted on a common carrier, for example on a printed circuit board or in a housing body. In the present case, they are mounted in a recess of a housing body 6.
  • the lens is expediently fixed relative to the first and second light-emitting diodes 1, 2. In the present case, it is supported by the housing body 6. Alternatively, a separate holding element - such as a frame - may be provided for fixing the lens, which is in particular attached to the lens and the housing base body 6 or carrier.
  • the lens 3 has a light entrance surface 31 and a light exit surface 32.
  • the light entry surface 31 faces the first and second light emitting diodes 1, 2.
  • the light entry surface 31 is one of the light emitting diodes 1, 2 spaced flat surface.
  • the LEDs 1, 2 may be formed with the lens 3, as described below in connection with the third embodiment.
  • the light exit surface 32 faces away from the first and second light-emitting diodes 1, 2. In the present case, it has the shape of the lateral surface of a half-cylinder.
  • the longitudinal axis 320 of the cylinder whose segment is the half-cylinder, extends presently parallel to the light entry surface 31. In plan view of the light exit surface 32, it runs between the first light-emitting diode 1 and the second light-emitting diode 2.
  • the light exit surface 32 is a lateral surface of a half cylinder, which is a semicircular one
  • Cross section has.
  • a line focus 300 of the lens 3 is achieved, which is arranged laterally between the first light-emitting diode 1 and the second light-emitting diode 2.
  • the line focus 300 is contained in a focal plane 33 which extends through the first light-emitting diode 1 and the second light-emitting diode 2.
  • the focal plane 33 contains, for example, a light exit surface of the first light-emitting diode 1 and a light exit surface of the second light-emitting diode 2. In the present case, the focal plane 33 is parallel to the light entry surface 31.
  • the second light-emitting diode 2 is arranged mirror-symmetrically to the first light-emitting diode 1 with respect to a mirror plane 4 which extends through the line focus 300 and is perpendicular to the focal plane 33.
  • the mirror plane 4 also extends through the longitudinal axis 320 of the cylinder, whose lateral surface defines the light exit surface 32.
  • the light exit surface 32 is mirror-symmetrical with respect to
  • the mirror 3 covers the first light-emitting diode 1 and the second light-emitting diode 2 in plan view of the light exit surface 32.
  • the first light-emitting diode 1 and the second light-emitting diode 2 are spaced apart from the mirror plane 4.
  • the lens 3 When viewed at a first observation angle ⁇ 1 with respect to the mirror plane 4, the lens 3, by refraction at the light exit surface 32, enlarges a portion 331 of the region of the focal plane 33 covered by the lens 3 in a plan view of the light exit surface 32, which region coincides with the first light-emitting diode 1 overlaps.
  • An area of the focal plane 33 which contains the second light-emitting diode 2 is not visible below the first viewing angle ⁇ 1. Instead, for the observer, in particular, the first subarea seems to fill in the entire light exit surface 32.
  • the first subarea 331 and the second subarea 332 are in each case in particular a narrow strip of the focal plane 33 running parallel to the line focus 300.
  • Beam paths of light beams 100 and 200, respectively, of light emitted from the first subarea 331 of the focal plane 33 of the first light emitting diode 1 and light emitted from the second subarea 332 of the focal plane 33 of the light-emitting diode 2 are shown by way of example in FIG. 1A.
  • the lens 3 changes - due to
  • the first light-emitting diode 1 emits green light 100 and the second light-emitting diode 2 emits red light 200.
  • the light-emitting diode component emits green light in the first emission angle range and red light in the second emission angle range. The component appears in this way when viewed at the first viewing angle ß] _ and green when viewed at a second viewing angle ß2 red.
  • FIGS. 2A and 2B show a second exemplary embodiment of a light-emitting diode component in a schematic side view (FIG. 2A) and a schematic top view (FIG. 2B).
  • the component according to the second exemplary embodiment initially differs from the component of the first exemplary embodiment in that, in addition to the first light-emitting diode 1 and the second light-emitting diode 2, which, analogously to the first embodiment, part - are arranged mirror-symmetrically to the mirror plane 4 on different sides of the mirror plane 4, a third light-emitting diode 5 has.
  • the third light-emitting diode 5 overlaps in plan view of the focal plane 33 laterally with the mirror plane and the line focus 300.
  • the lens 3 is omitted in FIG. 2B.
  • the component emits light emitted by the third light-emitting diode 5 in a third emission angle range.
  • the third emission angle range comprises an observation direction perpendicular to the focal plane 33, corresponding to a third observation angle ⁇ 3 of 0 °.
  • the first, second and third light-emitting diodes 1, 2, 5 in the present case are mounted on a component carrier 6, for example a printed circuit board, and in particular electrically connected thereto.
  • a housing body may be provided, for example as in the first embodiment.
  • the lens 3 is fastened to the component carrier 6, for example by means of holding elements such as holding pins 9. In this way, the lens 3 can be particularly simple relative to the
  • the lens 3 may alternatively be carried by a housing body, as in the first embodiment, or the light emitting diodes may be formed with the lens, as described below in connection with the third embodiment.
  • the light emitting diode device differs from the light emitting diode device of the first embodiment in that each of Light-emitting diodes 1, 2, 5 has a plurality of light-emitting diode chips.
  • the first light-emitting diode 1, the second light-emitting diode 2 and the third light-emitting diode 5 each have three
  • LED chips namely a red LED chip IR, 2R or 5R, a green LED chip IG, 2G or 5G and a blue LED chip IB, 2B, 5B.
  • This embodiment is merely exemplary.
  • the first, the second and / or the third light-emitting diodes 1, 2, 5 are formed differently from one another, for example, have different numbers of light-emitting diode chips and / or light-emitting diode chips of different colors.
  • the third light-emitting diode 3 is omitted.
  • Each of the LEDs has an optional here
  • Light-emitting diode support 11, 21 and 51 respectively, on which the light-emitting diode chips IR, IG, IB or 2R, 2G, 2B or 5R, 5G, 5B of the respective light-emitting diode 1, 2, 5 are mounted.
  • the light-emitting diode carriers 11, 21, 51 may be, for example, ceramic carriers with which a particularly good heat dissipation from the light-emitting diode chips can be achieved.
  • Figure 3 shows a schematic cross section through a
  • the light-emitting diode component comprises a first light-emitting diode 1, a red light-emitting diode chip IR, a green light-emitting diode chip IG and a blue light-emitting diode chip B, a second light-emitting diode 2 a red light-emitting diode chip 2R, a green light-emitting diode chip 2G and a blue light-emitting diode chip 2B and an optional one third light-emitting diode 3 with a red LED chip 5R, a green LED chip 5G and a blue LED chip 5B.
  • the light-emitting diode chips IR, IG, IB, 2R, 2G, 2G, 5R, 5G, 5B without light-emitting diode carriers 11, 21, 51 are applied directly to the component carrier 6.
  • light-emitting diode carriers 11, 21, 51 may be provided as in the second embodiment.
  • the lens 3 is not spaced from the light-emitting diodes 1, 2, 5 in the present embodiment. Rather, the light entry surface 31 of the lens 3 in the present embodiment directly adjoins the light-emitting diode chips. In particular, the light exit surfaces of the light-emitting diode chips facing away from the component carrier 6 adjoin the light entry surface 31 of the lens 3.
  • the lens 3 may for example also adjoin side edges of the semiconductor chips, as shown in FIG.
  • the light entry surface 31 of the lens 3 for example, pits, in which the semiconductor chips are partially or completely received.
  • the light-emitting diodes 1, 2, 5, in particular the light-emitting diode chips, are arranged at least partially in the depressions.
  • the lens 3 represents the component envelope of the light-emitting diode component. In particular, it is applied directly to the component carrier 6, for example by means of an injection molding or transfer molding method.
  • the first light-emitting diode 1, the second light-emitting diode 2 and the third light-emitting diode 5 are formed with the lens 3.
  • FIG. 4A shows a schematic plan view of a light-emitting diode module according to an exemplary embodiment.
  • the light-emitting diode module has a module carrier 7, for example a printed circuit board, such as a printed circuit board (PCB, Printed Circuit Board).
  • a module carrier 7 for example a printed circuit board, such as a printed circuit board (PCB, Printed Circuit Board).
  • a plurality of light-emitting diode components 10 of the same design are arranged in rows Y1, Y2, Y3, Y4 and columns X1, X2, X3, X4.
  • Embodiment (see Figure 3) executed.
  • the light emitting diode module has four rows Y1, Y2, Y3, Y4 and four columns X1, X2, X3, X4 of light emitting diode components 10. However, it may have other numbers of rows and / or columns. The number of rows does not have to be the same as the number of columns. In the present case, each column Y1, Y2, Y3, Y4 and each row X1, X2, X3, X4 contains four light-emitting diode components 10. However, a different number of light-emitting diode components 10 can also be selected. The number of light-emitting diode components also need not be the same in all rows and columns.
  • FIG. 4B shows an example of a variant of the light-emitting diode module which has five columns X1, X2, X3, X4, X5 and three rows Y1, Y2, Y3 of light-emitting diode components 10.
  • the first, third and fifth columns X1, X3, X5 each contain two light-emitting diode components 10.
  • the second and fourth columns X2, X4 each contain a light-emitting diode component 10.
  • the first and third rows Y1, Y3 each contain three light-emitting diode components 10.
  • the second row Y2 contains two light-emitting diode components 10.
  • the line foci 300 of the components 10 are all arranged parallel to one another.
  • the line foci 300 of the light-emitting diode components 10 arranged in each case extend one another, that is, they lie on a common straight line.
  • the mirror planes 4 of the respective light-emitting diode components 10 arranged in a column also form a common mirror plane 4.
  • FIG. 5A shows a schematic cross section through a pointing device according to a first exemplary embodiment.
  • the display device contains, for example, a light-emitting diode module according to the exemplary embodiment of FIG. 4.
  • each light-emitting diode component 10 represents a light point of the display device.
  • a first sub-image 8A is composed of the pixels.
  • a second partial image 8B is composed of the individual pixels
  • a third partial image 8C is composed of the individual pixels.
  • the emission angle ranges El, E2, E3 are essentially defined by the position of the first, second and third light-emitting diodes 1, 2, 5 of each component 10 relative to the lens 3 of the same component 10 and by the shape of the lens 3, in particular the light exit surface 32 ,
  • the distances of the components 10 to each other are advantageously practically freely selectable. Only if the observer has a small distance from the light-emitting diode module must it be taken into account that the observer views the individual light-emitting diode components 10 at different angles.
  • the display device displays when viewed at an observation angle ß] _ from the first emission angle range El a first information on, for example, a first sym- bol 8A.
  • a first information on, for example, a first sym- bol 8A.
  • it shows a second information, for example a second symbol 8B.
  • a third information for example a third symbol 8C, appears.
  • the first, second and third information are different from each other.
  • Symbols 8A, 8B and 8C are traffic signs as shown by way of example in FIG. 5B.
  • the display device is designed to display a different observer depending on its position to the display device different traffic signs and, for example, to give different instructions - such as to change the direction of travel.
  • FIG. 6 shows a display device according to a second exemplary embodiment.
  • the display device contains a light-emitting diode module with a plurality of light-emitting diode components arranged in rows and columns, analogous to the light-emitting diode module of FIG. 4.
  • each light-emitting diode component 10 of the light-emitting diode module contains only a first light-emitting diode 1 and a second light-emitting diode 2, but no third one LED 3.
  • the first light emitting diodes 1 a first partial image of the display device is displayed (indicated by the light rays 100 in Figure 6), which is intended for the left eye L of a viewer.
  • the second light emitting diodes 2 of the light emitting diode components 10 a second partial image of the pointing device is indicated (indicated by the light beams 200 in FIG. 6), which is intended for the right eye R of a viewer.
  • the observer Due to the distance between the left and right eyes L, R, the observer observes the display device with the left eye at a first observation angle .beta. _ And the right eye R at a different second emission angle .beta.2 (in FIG. 6 to simplify the illustration). not shown).
  • the display device emits the first partial image at the first observation angle ⁇ 1 _ and the second partial image is emitted at the second observation angle ⁇ 2.
  • the observer's right and left eyes R, L see different fields.
  • the first and second field are two stereoscopic fields.
  • Stereoscopic fields represent the same object from different angles of observation and are capable of producing in the observer an impression of spatial depth of the object represented - a so-called "3D effect" - when each eye of the observer sees one of the two fields.
  • the line foci 300 of the light-emitting diode components 10 run in the display device of the present embodiment, in particular parallel to the median plane M of the head of the observer.
  • the median plane M is the plane extending from the vertex to the neck and from the nose to the back of the head through the center of the head, dividing the head into left and right halves.
  • the line foci 300 of the light-emitting diode components 10 of the display device run perpendicular to the median plane M.
  • the viewer observes the light-emitting diode components with both eyes L, R at the same viewing angle ⁇ 1, ⁇ 2 or ⁇ 3.
  • the observation angle changes with the distance of the eyes L, R to the mirror plane (s) 4.
  • the observer sees red light 100 of the first light-emitting diodes 1 when his eyes L, R on one Side of the mirror plane (s) 4 and green light 200 of the second light-emitting diodes 2, when his eyes L, R are on the other side of the mirror plane (s) 4.
  • the display device without changing its operating state, gives the observer the impression of switching the display from red to green light or from green to red light, when the observer latches his eyes L, R from one side of the mirror plane (s). 4 to the other side of the
  • the display device can be used for example as a traffic signal in a ski lift, for example, to signal the observer by displaying the first information - such as the red light - to keep a safety clip closed and by displaying the second information - about the green light - to signal to open the safety bar.
  • first information - such as the red light - to keep a safety clip closed
  • second information - about the green light - to signal to open the safety bar.
  • the light-emitting diode component 10 comprises a first light-emitting diode 1, a second light-emitting diode 2 and two third light-emitting diodes 5.
  • the light-emitting diodes 1, 2, 5 are arranged at the corner points of a rhombus, cf. FIG. 7A.
  • the lens 3 has, seen in plan view, the shape of an ellipse. That is, in a direction parallel to the line focus 300, an extension of the lens 3 is greater than in a direction perpendicular thereto. This also means that the lens 3 in a direction along the stroke focus 300 as well as in a direction transverse to the stroke focus 300, respectively has a curvature, the curvatures being different from each other. Therefore, the stroke focus 300 does not extend along the entire extent of the lens, along a direction parallel to the stroke focus 300.
  • the elliptical lens 3 combines in particular the
  • the third light-emitting diodes 5 overlap in the lateral direction with the line focus 300. Seen in a side view, in particular FIG. 7B, the light-emitting diodes 1, 2, 5 do not overlap.
  • the invention is not limited by the description based on the embodiments of these. Rather, the invention includes any novel feature as well as any combination of features, even if that feature or combination is not explicitly indicated in the exemplary embodiments or claims.
  • the construction of the light emitting diode component, the light emitting diode module or the display device - for example, the focal length, the lens geometry such as the strength of the curvature of the light exit surface, the distance between the light emitting diodes, the distance between the LED chips and / or other parameters of the geome - trie of the component, the module or the display device - with advantage to the particular purpose - for example, to the intended observation distance of the viewer, to use to cause a "3D effect" to the Use to induce a "flip effect", etc. - customized.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
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Abstract

L’invention concerne un composant à diodes électroluminescentes (10) comportant une première diode électroluminescente (1), une seconde diode électroluminescente (2) et une lentille (3). La lentille présente une surface d’entrée de lumière (31) et une surface de sortie de lumière (32). Au moins la surface de sortie de lumière (32) est bombée de telle manière que la lentille (3) présente un foyer linéaire (300). La première diode électroluminescente (1), la seconde diode électroluminescente (2) et la lentille (3) sont agencées de telle sorte que la surface d’entrée de lumière (31) se trouve en regard de la première et de la seconde diode électroluminescente (1, 2), le foyer linéaire (300) étant placé vu d’en haut sur la surface de sortie de lumière (32) entre la première diode électroluminescente (1) et la seconde diode électroluminescente (2).
PCT/EP2010/059835 2009-07-13 2010-07-08 Composant à diodes électroluminescentes, module à diodes électroluminescentes et dispositif d’affichage Ceased WO2011006835A1 (fr)

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DE102009032886A DE102009032886A1 (de) 2009-07-13 2009-07-13 Leuchtdiodenbauteil, Leuchtdiodenmodul und Anzeigevorrichtung
DE102009032886.6 2009-07-13

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WO2012155800A1 (fr) * 2011-05-13 2012-11-22 Li Chao Écran 3d large comprenant des tubes électroluminescents à lentille cylindrique
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Cited By (18)

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Publication number Priority date Publication date Assignee Title
WO2012155799A1 (fr) * 2011-05-13 2012-11-22 Li Chao Tube électroluminescent doté d'une lentille à surface ellipsoïdale
WO2012155800A1 (fr) * 2011-05-13 2012-11-22 Li Chao Écran 3d large comprenant des tubes électroluminescents à lentille cylindrique
JP2014520280A (ja) * 2011-05-13 2014-08-21 李超 円柱レンズ発光管をベースとする立体ビッグスクリーン
KR101622819B1 (ko) 2011-05-13 2016-05-19 차오 리 실린더 렌즈 발광관에 기반한 입체 대형 스크린
WO2015163705A1 (fr) * 2014-04-24 2015-10-29 한국광기술원 Système d'affichage en 3d
KR20150123032A (ko) * 2014-04-24 2015-11-03 한국광기술원 3차원 디스플레이 시스템
KR101579072B1 (ko) 2014-04-24 2015-12-21 한국광기술원 3차원 디스플레이 시스템
US10432923B2 (en) 2014-04-24 2019-10-01 Korea Photonics Technology Institute 3D display system
US10304811B2 (en) 2015-09-04 2019-05-28 Hong Kong Beida Jade Bird Display Limited Light-emitting diode display panel with micro lens array
EP3345176A4 (fr) * 2015-09-04 2019-01-09 Hong Kong Beida Jade Bird Display Limited Écran d'affichage à diodes électroluminescentes comprenant un réseau de micro-lentilles
US10622343B2 (en) 2015-09-04 2020-04-14 Hong Kong Beida Jade Bird Display Limited Semiconductor apparatus and method of manufacturing the same
US10700048B2 (en) 2015-09-04 2020-06-30 Hong Kong Beida Jade Bird Display Limited Projection display system
US10910356B2 (en) 2015-09-04 2021-02-02 Jade Bird Display (shanghai) Limited Light-emitting diode display panel with micro lens array
US11417641B2 (en) 2015-09-04 2022-08-16 Jade Bird Display (shanghai) Limited Light-emitting diode display panel with micro lens array
US11742339B2 (en) 2015-09-04 2023-08-29 Jade Bird Display (shanghai) Limited Light-emitting diode display panel with micro lens array
US12261162B2 (en) 2015-09-04 2025-03-25 Jade Bird Display (shanghai) Limited Light-emitting diode display panel with micro lens array
WO2024062081A1 (fr) * 2022-09-22 2024-03-28 Valeo Vision Module lumineux pour dispositif de signalisation d'un véhicule automobile
FR3140147A1 (fr) * 2022-09-22 2024-03-29 Valeo Vision Module lumineux pour affichage dans plusieurs champs lumineux différents

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