US20190043842A1 - Bi-directional optical module and transparent display apparatus using the same - Google Patents

Bi-directional optical module and transparent display apparatus using the same Download PDF

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Publication number
US20190043842A1
US20190043842A1 US15/981,098 US201815981098A US2019043842A1 US 20190043842 A1 US20190043842 A1 US 20190043842A1 US 201815981098 A US201815981098 A US 201815981098A US 2019043842 A1 US2019043842 A1 US 2019043842A1
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Prior art keywords
led
light
optical module
area
directional optical
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Abandoned
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US15/981,098
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English (en)
Inventor
Ting-Wei Guo
Chen-Chi Lin
Pin-Miao Liu
Cheng-Chieh Chang
Ho-Cheng LEE
Wen-Wei Yang
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AU Optronics Corp
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AU Optronics Corp
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Assigned to AU OPTRONICS CORPORATION reassignment AU OPTRONICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, HO-CHENG, CHANG, CHENG-CHIEH, LIN, CHEN-CHI, YANG, WEN-WEI, LIU, PIN-MIAO, GUO, TING-WEI
Publication of US20190043842A1 publication Critical patent/US20190043842A1/en
Priority to US16/784,646 priority Critical patent/US11545472B2/en
Abandoned legal-status Critical Current

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    • 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
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    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
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    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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    • H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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    • H10K59/10—OLED displays
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
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    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Definitions

  • the present disclosure relates to a bi-directional optical module and a transparent display apparatus using the same.
  • a transparent display apparatus can provide a user with a displayed image, and the user can perspectively view, through the transparent display apparatus, a displayed article or a sight that is behind the transparent display apparatus. That is, in addition to an original display function, the transparent display apparatus also has a feature of displaying the background of the picture, and may be widely applied to a large-scale commercial exhibition, a shop window, or a display window of a commodity showcase, to both display an advertisement image and display a commodity.
  • a transparent display apparatus includes a liquid panel and a backlight module (such as a light box), and the backlight module may be disposed behind or on a side of the liquid panel, to provide the liquid panel with a light source.
  • some light of the backlight module is also emitted to a displayed article that is behind the transparent display panel, causing distortion of the colored light, color temperature, or tone of the displayed article, thereby reducing the viewing quality of the displayed article.
  • the present disclosure provides a bi-directional optical module and a transparent display apparatus that uses the bi-directional optical module.
  • the bi-directional optical module can improve viewing quality of a displayed article that is behind the transparent display apparatus, and can increase penetration of the transparent display apparatus.
  • the bi-directional optical module includes a substrate, at least one first light-emitting diode (LED), and at least one second LED.
  • the first LED is disposed on a surface of the substrate.
  • the first LED has a first reflection surface and a first light-outlet surface that are opposite to each other, and the first light-outlet surface is away from the substrate relative to the first reflection surface.
  • the second LED is disposed on the same surface of the substrate.
  • the second LED has a second reflection surface and a second light-outlet surface that are opposite to each other, and the second light-outlet surface is close to the substrate relative to the second reflection surface.
  • the substrate has at least one light-transparent area that is not occupied by the first LED and the second LED.
  • the transparent display apparatus includes the bi-directional optical module, at least one pixel circuit, and at least one second switch transistor.
  • the pixel circuit is electrically coupled to the first LED of the bi-directional optical module.
  • the pixel circuit includes a first switch transistor, and the first switch transistor has a first gate electrode.
  • the second switch transistor is electrically coupled to the second LED of the bi-directional optical module.
  • the second switch transistor includes a second gate electrode, and the second gate electrode of the second switch transistor and the first gate electrode of the first switch transistor are electrically coupled to a same control signal source.
  • FIG. 1 is a schematic top view of a bi-directional optical module according to some implementations of the present disclosure
  • FIG. 2 is a schematic sectional view along a line segment 2 - 2 of FIG. 1 ;
  • FIG. 3 is a schematic sectional view of a bi-directional optical module according to some implementations of the present disclosure
  • FIG. 4 is a schematic top view of a bi-directional optical module according to some implementations of the present disclosure.
  • FIG. 5 is a schematic top view of a bi-directional optical module according to some implementations of the present disclosure.
  • FIG. 6 is a schematic top view of a bi-directional optical module according to some implementations of the present disclosure.
  • FIG. 7 is a schematic top view of a bi-directional optical module according to some implementations of the present disclosure.
  • FIG. 8 is a schematic top view of a bi-directional optical module according to some implementations of the present disclosure.
  • FIG. 9 is a schematic top view of a bi-directional optical module according to some implementations of the present disclosure.
  • FIG. 10A is a schematic configuration diagram of a local circuit of a transparent display apparatus according to some implementations of the present disclosure.
  • FIG. 10B is an equivalent circuit diagram of the local circuit of FIG. 10A according to some implementations of the present disclosure
  • FIG. 11 is a schematic sectional view of a structure that is obtained by configuring the circuit of the transparent display apparatus of FIG. 10A ;
  • FIG. 12A is a schematic configuration diagram of a local circuit of a transparent display apparatus according to some implementations of the present disclosure.
  • FIG. 12B is an equivalent circuit diagram of the local circuit of FIG. 12A according to some implementations of the present disclosure
  • FIG. 13 is a schematic configuration diagram of a local circuit of a transparent display apparatus according to some implementations of the present disclosure.
  • FIG. 14 is a schematic configuration diagram of a local circuit of a transparent display apparatus according to some implementations of the present disclosure.
  • FIG. 15 is a schematic configuration diagram of a local circuit of a transparent display apparatus according to some implementations of the present disclosure.
  • FIG. 16 is a schematic configuration diagram of a local circuit of a transparent display apparatus according to some implementations of the present disclosure.
  • FIG. 17 is a schematic configuration diagram of a local circuit of a transparent display apparatus according to some implementations of the present disclosure.
  • FIG. 1 is a schematic top view of a transparent display apparatus 100 A according to some implementations of the present disclosure.
  • the transparent display apparatus 100 A includes a bi-directional optical module 101 .
  • the transparent display apparatus 100 A can use the bi-directional optical module 101 to achieve an effect of simultaneously displaying an image and presenting a commodity.
  • the presenting a commodity refers to spotlighting the commodity, so that the commodity can gain attention.
  • the bi-directional optical module 101 A includes a substrate 110 , a first LED 120 , and a second LED 130 .
  • the substrate 110 has a display area D, a lighting area W, and a light-transparent area T.
  • the substrate 110 has the display area D occupied by the first LED 120 , the lighting area W occupied by the second LED 130 , and the light-transparent area T not occupied by the first LED 120 and the second LED 130 .
  • the light-transparent area T may be formed by multiple light-transparent portions T′.
  • the display area D, the light-transparent area T, and the lighting area W may be sequentially arranged or randomly arranged on the substrate 110 .
  • the substrate 110 may be a transparent substrate, a rigid substrate, or a flexible substrate, such as glass, tempered glass, polycarbonate (PC), polyethylene terephthalate (PET), or other cyclic olefin copolymer.
  • PC polycarbonate
  • PET polyethylene terephthalate
  • the present disclosure is not limited to this.
  • the first LED 120 may be a plurality of first LEDs 120
  • the second LED 130 may be a plurality of second LEDs 130
  • the light-transparent area T may also be a plurality of light-transparent areas T.
  • the first LEDs 120 and the second LEDs 130 may form multiple types of sub-pixel areas in different arrangement manners and to different scales.
  • the first LEDs 120 are arranged in multiple rows in a configuration direction A
  • the second LEDs 130 are also arranged in multiple rows in the configuration direction A.
  • the first LEDs 120 and the second LEDs 130 that are in some rows may be separated by the light-transparent area T. That is, the first LEDs 120 and the second LEDs 130 that are in the some rows are disposed on two opposite sides of the light-transparent area T.
  • FIG. 2 is a schematic sectional view along a line segment 2 - 2 of FIG. 1 .
  • the first LED 120 is located in the display area D of the substrate 110 , and is disposed on an upper surface 112 of the substrate 110 .
  • the first LED 120 has a first reflection surface 122 and a first light-outlet surface 124 that are opposite to each other, and the first light-outlet surface 124 is away from the substrate 110 relative to the first reflection surface 122 .
  • the first LED 120 may be configured to emit a first light beam L 1 .
  • the first light beam L 1 may roughly travel in a first direction D 1 , and the first direction D 1 is a direction in which the first reflection surface 122 and the first light-outlet surface 124 are arranged.
  • the first LED 120 generates a light beam that travels in a direction different from the first direction D 1 , and when the light beam arrives at the first reflection surface 122 of the first LED 120 , the light beam may be reflected by the first reflection surface 122 and change direction, the light beam may travel in the first direction D 1 and penetrate the first light-outlet surface 124 to leave the first LED 120 .
  • the first LED 120 when the first LED 120 generates a light beam that travels towards the first reflection surface 122 , the light beam does not penetrate the first reflection surface 122 , and the light beam finally leaves the first LED 120 in a manner of traveling in the first direction D 1 .
  • the second LED 130 is located in the lighting area W of the substrate 110 , and is disposed on the upper surface 112 of the substrate 110 .
  • the second LED 130 has a second reflection surface 132 and a second light-outlet surface 134 that are opposite to each other, and the second light-outlet surface 134 is close to the substrate 110 relative to the second reflection surface 132 .
  • the second LED 130 may be configured to emit a second light beam L 2 .
  • the second light beam L 2 may roughly travel in a second direction D 2 .
  • the second direction D 2 is a direction in which the second reflection surface 132 and the second light-outlet surface 134 are arranged, and the first direction D 1 and the second direction D 2 may be a pair of directions opposite to each other.
  • the second LED 130 when the second LED 130 generates a light beam that travels in a direction different from the second direction D 2 , and when the light beam arrives at the second reflection surface 132 of the second LED 130 , the light beam may be reflected by the second reflection surface 132 and change direction, the light beam may travel in the second direction D 2 and penetrate the second light-outlet surface 134 to leave the second LED 130 .
  • the second LED 130 when the second LED 130 generates a light beam that travels towards the second reflection surface 132 , the light beam generally does not penetrate the second reflection surface 132 , and the light beam finally leaves the second LED 130 in a manner of traveling in the second direction D 2 .
  • the first light beam L 1 emitted by the first LED 120 may leave the first LED 120 in the first direction D 1
  • the second light beam L 2 emitted by the second LED 130 may leave the second LED 130 in the second direction D 2
  • the first direction D 1 and the second direction D 2 are opposite to each other, and therefore the transparent display apparatus 100 A may use the bi-directional optical module 101 A to implement bi-directional light emission.
  • the first LED 120 may include a first anode structure 126 and a first cathode structure 128 .
  • the first anode structure 126 is disposed on the first light-outlet surface 124 of the first LED 120 , and there is a first anode contact area between the first anode structure 126 and the first light-outlet surface 124 of the first LED 120 .
  • the first cathode structure 128 is disposed on the first light-outlet surface 124 of the first LED 120 , and there is a first cathode contact area between the first cathode structure 128 and the first light-outlet surface 124 of the first LED 120 .
  • a sum of the first anode contact area and the first cathode contact area is less than an area of the first light-outlet surface 124 of the first LED 120 . More specifically, the first anode structure 126 and the first cathode structure 128 are disposed in a local area of the first light-outlet surface 124 of the first LED 120 , and the first anode structure 126 and the first cathode structure 128 are separated and spaced apart from each other by at least a distance.
  • the first light beam L 1 emitted by the first LED 120 is not completely blocked by the first anode structure 126 and the first cathode structure 128 , and therefore can penetrate at least one part of the first light-outlet surface 124 , thereby increasing light-outlet efficiency of the first LED 120 .
  • the first anode structure 126 and the first cathode structure 128 may include silver, aluminum, gold, tungsten, copper, or other proper metal materials.
  • the present disclosure is not limited to this.
  • the first anode structure 126 and the first cathode structure 128 that are described in the present disclosure merely represent that the two are respectively electrically coupled to different power supply sources, but do not represent essential positive and negative poles of an LED.
  • the current may flow from the first anode structure 126 to the first cathode structure 128 ; or in some other implementations, the current may flow from the first cathode structure 128 to the first anode structure 126 .
  • the second LED 130 may also include a second anode structure 136 and a second cathode structure 138 .
  • the second anode structure 136 is disposed on the second reflection surface 132 of the second LED 130 , and there is a second anode contact area between the second anode structure 136 and the second reflection surface 132 of the second LED 130 .
  • the second cathode structure 138 is disposed on the second reflection surface 132 of the second LED 130 , and there is a second cathode contact area between the second cathode structure 138 and the second reflection surface 132 of the second LED 130 .
  • a sum of the second anode contact area and the second cathode contact area is essentially roughly equal to an area of the second reflection surface 132 of the second LED 130 . More specifically, the second anode structure 136 and the second cathode structure 138 may almost completely occupy the second reflection surface 132 of the second LED 130 , thereby reducing a probability that a light beam emitted by the second LED 130 penetrates the second reflection surface 132 .
  • the second anode structure 136 and the second cathode structure 138 may include silver, aluminum, gold, tungsten, copper, or other proper metal materials. However, the present disclosure is not limited to this.
  • the first LED 120 may be a solid light source, such as a red light source, a green light source, or a blue light source, and may be an organic LED. Multiple first LEDs 120 may form a solid light source array. However, the present disclosure is not limited to this. In another implementation, the first LED 120 may alternatively be a micro-LED, and form a pixel array. In addition, the size of the micro-LED device may be adjusted according to a requirement on a pixel size of a display apparatus.
  • the second LED 130 may include a red light source, a green light source, or a blue light source, and may be a LED or an organic LED. However, the present disclosure is not limited to this. In some implementations, the second LED 130 may include at least one red light source, at least one green light source, and at least one blue light source, so as to generate white light by means of mixture. Alternatively, the second LED 130 may be a white LED, such as a white micro-LED. However, the present disclosure is not limited to this.
  • the first reflection surface 122 of the first LED 120 may include a thin metal film, or a reflective film made of another high reflectivity material, so as to more effectively deflect, to the first light-outlet surface 124 , an emitted light beam that travels in a direction different from the first direction D 1 .
  • the present disclosure is not limited to this.
  • the second reflection surface 132 may include a thin metal film, or a reflective film made of another high reflectivity material, so as to more effectively deflect, to the second light-outlet surface 134 , a light beam that travels in a direction different from the second direction D 2 .
  • the present disclosure is not limited to this.
  • the bi-directional optical module 101 may further include a light guiding structure 140 .
  • the light guiding structure 140 is disposed on the first light-outlet surface 124 of the first LED 120 , so as to increase directionality that is of the first light beam L 1 emitted by the first LED 120 and that is for directing the first direction D 1 .
  • the light guiding structure 140 may include a plastic material. A refractive index of the plastic material may be between that of the first LED 120 and that of the air, thereby preventing the first light beam L 1 from large-angle deflection when the first light beam L 1 leaves the first LED 120 .
  • the light guiding structure 140 may include a plastic material and a micro-lens. The plastic material may be disposed between the micro-lens and the first LED 120 .
  • the present disclosure is not limited to this.
  • FIG. 3 is a schematic sectional view of a transparent display apparatus 100 B according to some implementations of the present disclosure.
  • a location of the cross-section drawn in FIG. 3 is the same as that in FIG. 2 .
  • At least one difference between the transparent display apparatus 100 B drawn in FIG. 3 and the transparent display apparatus 100 A drawn in FIG. 2 lies in that, in the transparent display apparatus 100 B drawn in FIG. 3 , the first anode structure 126 and the first cathode structure 128 that are of the first LED 120 are respectively disposed on two opposite surfaces of the first LED 120 , and the second anode structure 136 and the second cathode structure 138 that are of the second LED 130 are similarly respectively disposed on two opposite surfaces of the second LED.
  • the first anode structure 126 is disposed on the first light-outlet surface 124
  • the first cathode structure 128 is disposed on the first reflection surface 122 .
  • the first anode contact area is smaller than the first cathode contact area.
  • the first cathode contact area of the first reflection surface 122 is relatively larger than the first anode contact area of the first light-outlet surface 124 .
  • the first light beam L 1 emitted by the first LED 120 is more easily blocked by the first cathode structure 128 , and the first light beam L 1 is more easily kept away from the first anode structure 126 , so that the first light beam L 1 can penetrate the first light-outlet surface 124 more easily to leave the first LED 120 , helping increase light-outlet efficiency of the first LED 120 .
  • the second anode structure 136 is disposed on the second reflection surface 132
  • the second cathode structure 138 is disposed on the second light-outlet surface 134 .
  • the second anode contact area is larger than the second cathode area.
  • the second LED 130 when the second LED 130 generates a light beam that travels in a direction different from the second direction D 2 , and when the light beam arrives at the second reflection surface 132 of the second LED 130 , the light beam may be blocked by the second anode structure 136 and therefore less easily penetrate the second reflection surface 132 , helping increase light-outlet efficiency of the second LED 130 .
  • FIG. 4 and FIG. 5 are schematic top views of transparent display apparatuses 100 C and 100 D according to some implementations of the present disclosure. At least one difference between the transparent display apparatuses 100 C and 100 D drawn in FIG. 4 and FIG. 5 and the transparent display apparatus 100 A drawn in FIG. 1 lies in that, in the transparent display apparatuses 100 C and 100 D drawn in FIG. 4 and FIG. 5 , the first LEDs 120 of the bi-directional optical module 101 may be arranged in the configuration direction A, but the second LEDs 130 of the bi-directional optical module 101 and the light-transparent portions T′ are alternately arranged in the configuration direction A.
  • a horizontal row formed by the first LEDs 120 and a horizontal row formed by the second LEDs 130 and the light-transparent portions T′ are mutually side by side.
  • a proportion in which the light-transparent portions T′ of the bi-directional optical module 101 occupies the substrate 110 may be adjusted according to a penetration requirement of the applied transparent display apparatus, thereby increasing diversity of penetration of the transparent display apparatus.
  • the bi-directional optical module 101 may be formed by repetitively arranging a unit area U.
  • the unit area U is formed by three first LEDs 120 , two second LEDs 130 , and one light-transparent portion T′.
  • the three first LEDs 120 are jointly arranged in a row in the configuration direction A
  • the two second LEDs 130 and one light-transparent portion T′ are jointly arranged in a row in the configuration direction A
  • the light-transparent portion T′ is located between the two second LEDs 130 .
  • the unit area U that forms the bi-directional optical module 101 may be formed by six first LEDs 120 , one second LED 130 , and five light-transparent portions T′.
  • the six first LEDs 120 are jointly arranged in a row in the configuration direction A
  • the one second LED 130 and the five light-transparent portions T′ are jointly arranged in a row in the configuration direction A.
  • the second LED 130 is inserted, and then one light-transparent portion T′ is arranged, that is, four light-transparent portions T′ and one light-transparent portion T′ are disposed on both the left side and the right side of the second LED 130 .
  • FIG. 6 is a schematic top view of a transparent display apparatus 100 E according to some implementations of the present disclosure. At least one difference between the transparent display apparatus 100 E drawn in FIG. 6 and the foregoing transparent display apparatus lies in that, in the transparent display apparatus 100 E drawn in FIG. 6 , the first LED 120 of the bi-directional optical module 101 may be classified into a red LED R, a green LED G, and a blue LED B, and the unit area U that forms the bi-directional optical module 101 may be formed by the red LED R, the green LED G, the blue LED B, the second LED 130 , and the four light-transparent portions T′.
  • the first LED 120 of the bi-directional optical module 101 may be classified into a red LED R, a green LED G, and a blue LED B
  • the unit area U that forms the bi-directional optical module 101 may be formed by the red LED R, the green LED G, the blue LED B, the second LED 130 , and the four light-transparent portions T′.
  • the red LED R, the green LED G, the blue LED B, and the second LED 130 are sequentially arranged in a row in the configuration direction A, and the four light-transparent portions T′ are jointly arranged in a row in the configuration direction A.
  • an area of the light-transparent portion T′ may be larger than an area of a display area (including areas of the red LED R, the green LED G, and the blue LED B), and also larger than an area of the lighting area (including an area of the second LED 130 ), helping increase penetration of the applied transparent display apparatus.
  • FIG. 7 and FIG. 8 are respectively schematic top views of transparent display apparatuses 100 F and 100 G according to some implementations of the present disclosure.
  • At least one difference between the transparent display apparatuses 100 F and 100 G drawn in FIG. 7 and FIG. 8 and the foregoing transparent display apparatus lies in that, in the transparent display apparatuses 100 F and 100 G drawn in FIG. 7 and FIG. 8 , the first LED 120 of the bi-directional optical module 101 may be classified into a red LED R, a green LED G, and a blue LED B, and the first LED 120 , the second LED 130 , and the light-transparent portion T′ are arranged in an staggered manner, helping increase a resolution of the applied transparent display apparatus.
  • the unit area U that forms the bi-directional optical module 101 may be formed by arranging the light-transparent portion T′, the red LED R, the green LED G, the blue LED B, and the second LED 130 in a row in the configuration direction A.
  • the unit area U that forms the bi-directional optical module 101 may be formed by arranging the red LED R, the green LED G, the blue LED B, the second LED 130 , and the light-transparent portion T′ in a staggered manner.
  • the red LED R and the green LED G may be arranged in the configuration direction A
  • the blue LED B and the red LED R (or the green LED G) may be arranged perpendicular to the configuration direction A
  • the red LED R and the green LED G may be separated by the second LED 130 and the light-transparent portion T′.
  • FIG. 9 is a schematic top view of a transparent display apparatus 100 H according to some implementations of the present disclosure. At least one difference between the transparent display apparatus 100 H drawn in FIG. 9 and the foregoing transparent display apparatus lies in that, in the transparent display apparatus 100 H drawn in FIG. 9 , the substrate 110 of the bi-directional optical module 101 may include a central area 114 and a peripheral area 116 , and the peripheral area 116 is located on an edge of the substrate 110 , and surrounds the central area 114 . In addition, to make the figure simpler, FIG. 9 draws only some pixel units that are inside the central area 114 and the peripheral area 116 . This should be clearly described in advance.
  • the central area 114 may have first-type pixel units P 1 that are repetitively arranged.
  • the first-type pixel unit P 1 may be jointly formed by four first LEDs 120 , one second LED 130 , and one light-transparent portion T′.
  • the peripheral area 116 may have second-type pixel units P 2 that are repetitively arranged.
  • the second-type pixel unit P 2 may be jointly formed by three first LEDs 120 , three second LEDs 130 , and three light-transparent portions T′.
  • a quantity of second LEDs 130 of the first-type pixel unit P 1 may be different from a quantity of second LEDs 130 of the second-type pixel unit P 2 , so that the transparent display apparatus 100 H may be designed according to different application scenarios or different requirements.
  • illumination brightness of the central area 114 may be different from illumination brightness of the peripheral area 116 .
  • This may be achieved by adjusting areas of second LEDs 130 of pixel units.
  • areas of second LEDs 130 of pixel units of the central area 114 may be designed to be less than areas of second LEDs 130 of pixel units of the peripheral area 116 .
  • driving currents of second LEDs 130 of pixel units may be adjusted.
  • a proportion of the areas of the second LEDs 130 of the pixel units of the central area 114 is less than a proportion of the areas of the second LEDs 130 of the pixel units of the peripheral area 116 .
  • the illumination brightness of the central area 114 may be designed to be less than the illumination brightness of the peripheral area 116 , helping satisfy a scenario of presenting a to-be-displayed article in the peripheral area 116 .
  • a size of a light-transparent area T of the first-type pixel unit P 1 may also be different from a size of a second LED 130 of the second-type pixel unit P 2 , so that the transparent display apparatus 100 H may be further designed according to different application scenarios or different requirements.
  • the first-type pixel unit P 1 of the central area 114 is configured in a manner of staggered arrangement (for example, the arrangement manner in FIG. 7 or FIG. 8 ), the central area 114 may have a relatively high resolution.
  • illumination intensity of the pixel units in the central area 114 may be different due to different configurations that are used.
  • the central area 114 in addition to the first-type pixel units P 1 that are repetitively arranged, there may further be first-type pixel units P 1 ′ that are repetitively arranged.
  • the first-type pixel unit P 1 is closer to a middle position of the central area. That is, the first-type pixel unit P 1 ′ may be located between the first-type pixel unit P 1 and the second-type pixel unit P 2 .
  • At least one difference between the first-type pixel unit P 1 and the first-type pixel unit P 1 ′ lies in that, an area of second LEDs 130 ′ of the first-type pixel unit P 1 is smaller than an area of second LEDs 130 ′ of the first-type pixel unit P 1 ′.
  • FIG. 10A is a schematic top view of a local circuit of a transparent display apparatus 1001 according to some implementations of the present disclosure.
  • the local circuit of the transparent display apparatus 1001 includes the first LED 120 and the second LED 130 that are of the bi-directional optical module 101 , a pixel circuit 200 , a second switch transistor 310 , a control signal source 400 , and voltage supply sources O and O′.
  • the pixel circuit 200 is electrically coupled to the first LED 120 .
  • the pixel circuit 200 includes a first switch transistor 210 , and the first switch transistor 210 has a first gate electrode 212 .
  • the first gate electrode 212 may be used as a signal control end of the pixel circuit 200 , and is electrically coupled to the control signal source 400 . Therefore, the pixel circuit 200 may be configured to drive and control the first LED 120 . That is, the pixel circuit 200 can drive and control a display area of the transparent display apparatus 1001 .
  • the second switch transistor 310 is electrically coupled to the second LED 130 .
  • the second switch transistor 310 has a second gate electrode 312 .
  • the second gate electrode 312 may be used as a signal control end of the second switch transistor 310 , and is electrically coupled to the control signal source 400 . Therefore, the second switch transistor 310 may be configured to drive and control the second LED 130 . That is, the second switch transistor 310 can drive and control a lighting area of the transparent display apparatus 1001 .
  • the signal control end of the pixel circuit 200 and the signal control end of the second switch transistor 310 may share the control signal source 400 . That is, the control signal source 400 may provide a control signal to the display area and the lighting area of the transparent display apparatus 1001 , thereby simplifying circuit configuration of the transparent display apparatus 1001 .
  • the control signal source 400 may be a light emission signal driver or a scanning signal driver. However, the present disclosure is not limited to this.
  • the pixel circuit 200 may further include circuit junctions 220 and 230 .
  • the circuit junction 220 of the pixel circuit 200 may be electrically coupled to the independent voltage supply source O, and the other circuit junction 230 of the pixel circuit 200 may be electrically coupled to the first LED 120 .
  • the voltage supply source O may be a high potential voltage supply source or a low potential voltage supply source.
  • At least one circuit junction (for example, the circuit junction 220 ) of the pixel circuit 200 may not share a voltage supply source with the second switch transistor 310 .
  • the second switch transistor 310 may further include electrodes 314 and 316 .
  • the electrode 314 of the second switch transistor 310 may be electrically coupled to the independent voltage supply source O′, and the other electrode 316 of the second switch transistor 310 may be electrically coupled to the second LED 130 .
  • the voltage supply source O′ may be a high potential voltage supply source or a low potential voltage supply source. That is, at least one electrode (for example, the electrode 314 ) of the second switch transistor 310 may not share a same voltage supply source with another circuit.
  • the second switch transistor 310 may be disposed on a side of the display area of the transparent display apparatus 1001 , and does not occupy extra space inside the display area.
  • the second switch transistor 310 may be disposed in a wiring area that is of the transparent display apparatus 100 I and that is close to an edge, and does not overlap a position of a pixel unit in the display area.
  • a specific position of the wiring area may be farther away from the central area (for example, the peripheral area and the central area in FIG. 9 ), that is, the peripheral area may be located between the central area and the wiring area.
  • FIG. 10B is an equivalent circuit diagram of the local circuit of FIG. 10A according to some implementations of the present disclosure.
  • the drawn circuit diagram includes high potential voltage supply sources OVDD and OVDD′, low potential voltage supply sources OVSS and OVSS′, the first LED 120 , the second LED 130 , transistors M 1 to M 7 , a capacitor C 1 , an input sources V_int and V_data, shift signal sources SCAN_N- 1 and SCAN_N, and the control signal source 400 .
  • the high potential voltage supply sources OVDD and OVDD′ in FIG. 10B correspond to the voltage supply sources O and O′ in FIG. 10A .
  • the first LED 120 and the second LED 130 in FIG. 10B respectively correspond to the first LED 120 and the second LED 130 in FIG. 10A .
  • the transistors M 5 and M 7 in FIG. 10B respectively correspond to the first switch transistor 210 and the second switch transistor 310 in FIG. 10A .
  • the control signal source 400 in FIG. 10B corresponds to the control signal source 400 in FIG. 10A .
  • circuit junctions N 1 and N 2 in FIG. 10B respectively correspond to the circuit junctions 220 and 230 in FIG. 10A .
  • the transistors M 5 and M 7 may be respectively used as switch components of the first LED 120 and the second LED 130 , and are jointly connected to the control signal source 400 , that is, the transistors M 5 and M 7 share the control signal source 400 .
  • FIG. 11 is a schematic sectional view of a structure that is obtained by configuring the circuit of the transparent display apparatus 100 I of FIG. 10A .
  • a location of the cross-section drawn in FIG. 11 is the same as that in FIG. 2 .
  • the pixel circuit 200 and the second switch transistor 310 are disposed on the substrate 110 of the bi-directional optical module 101 .
  • the pixel circuit 200 and the second switch transistor 310 are respectively connected to the first LED 120 and the second LED 130 .
  • the pixel circuit 200 is located below the first LED 120 .
  • a perpendicular projection of the pixel circuit 200 onto the substrate 110 of the bi-directional optical module 101 is separated from the light-transparent area T of the bi-directional optical module 101 . That is, the pixel circuit 200 is not located just below the light-transparent area T of the bi-directional optical module 101 . Therefore, the pixel circuit 200 does not affect penetration of the light-transparent area T of the bi-directional optical module 101 , helping increase penetration of the transparent display apparatus 1001 .
  • the bi-directional optical module 101 may simultaneously provide a light source to a display picture of the transparent display apparatus 1001 and provide a light source to a to-be-displayed article that is behind the transparent display apparatus 1001 , helping improve viewing quality of the displayed article that is behind the transparent display apparatus 100 I.
  • the transparent display apparatus 1001 may include a cover plate 500 and a spacer S.
  • the cover plate 500 is disposed opposite to the substrate 110 , and the spacer S is disposed between the substrate 110 and the cover plate 500 , so that the substrate 110 and the cover plate 500 may be separated and spaced apart from each other by at least a distance.
  • the cover plate 500 may be a transparent substrate, a rigid substrate, or a flexible substrate, such as glass, tempered glass, PC, PET, or another cyclic olefin copolymer.
  • the spacer S may be a granular spacer or an optical spacer. However, the present disclosure is not limited to this.
  • FIG. 12A is a schematic configuration diagram of a local circuit of a transparent display apparatus 100 J according to some implementations of the present disclosure. At least one difference between the local circuit that is of the transparent display apparatus 100 J and that is drawn in FIG. 12A and the local circuit that is of the transparent display apparatus 100 I and that is drawn in FIG. 10A lies in that, in the local circuit that is of the transparent display apparatus 100 J and that is drawn in FIG. 12A , an electrode 314 of the second switch transistor 310 and the circuit junction 220 of the pixel circuit 200 are electrically coupled to the same high potential voltage supply source OVDD. Other details in this implementation are roughly described above, and are not described herein again.
  • FIG. 12B is an equivalent circuit diagram of the local circuit of FIG. 12A according to some implementations of the present disclosure. At least one difference between the equivalent circuit diagram of the local circuit in FIG. 12B and the equivalent circuit diagram of the local circuit in FIG. 10B lies in that, in the equivalent circuit diagram of the local circuit in FIG. 12B , the high potential voltage supply source OVDD′ is omitted, and the transistor M 7 is electrically coupled to the high potential voltage supply source OVDD.
  • FIG. 13 is a schematic configuration diagram of a local circuit of a transparent display apparatus 100 K according to some implementations of the present disclosure. At least one difference between the local circuit that is of the transparent display apparatus 100 K and that is drawn in FIG. 13 and the local circuit that is of the transparent display apparatus 100 J and that is drawn in FIG. 12A lies in that, in the local circuit that is of the transparent display apparatus 100 K and that is drawn in FIG. 13 , the second LED 130 may include electrodes El and E 2 , and the electrodes El and E 2 are respectively electrically coupled to the second switch transistor 310 and the high potential voltage supply source OVDD. In addition, the circuit junction 220 of the pixel circuit 200 is also electrically coupled to the high potential voltage supply source OVDD. That is, the second LED 130 is coupled between the high potential voltage supply source OVDD and the second switch transistor 310 , and the high potential voltage supply source OVDD may be electrically connected to the second switch transistor 310 by using the second LED 130 .
  • the pixel circuit 200 and the second switch transistor 310 may share the high potential voltage supply source OVDD. Therefore, one fewer high potential voltage supply source OVDD may be disposed for the transparent display apparatus 100 K, helping reduce manufacturing costs of the transparent display apparatus 100 K.
  • Other details in this implementation are roughly described above, and are not described herein again.
  • a specific equivalent circuit diagram of the local circuit described in this implementation may be achieved by selectively adjusting the equivalent circuit diagram drawn in FIG. 12B .
  • the equivalent circuit diagram in this implementation and the equivalent circuit diagram in FIG. 12B lies in that, the second LED 130 in this implementation is coupled between the high potential voltage supply source OVDD and the transistor M 7 .
  • FIG. 14 and FIG. 15 are respectively schematic configuration diagrams of local circuits of transparent display apparatuses 100 L and 100 M according to some implementations of the present disclosure. At least one difference between the local circuits that are of the transparent display apparatuses 100 L and 100 M and that are drawn in FIG. 14 and FIG. 15 and the local circuit of the foregoing transparent display apparatus lies in that, in the local circuits that are of the transparent display apparatuses 100 L and 100 M and that are drawn in FIG. 14 and FIG. 15 , the first LED 120 may include electrodes E 3 and E 4 , and the electrodes E 3 and E 4 are respectively electrically coupled to the pixel circuit 200 and the low potential voltage supply source OVSS.
  • the electrode 316 of the second switch transistor 310 is also electrically coupled to the low potential voltage supply source OVSS.
  • the first LED 120 and the second switch transistor 310 may share the low potential voltage supply source OVSS, helping reduce manufacturing costs of the transparent display apparatus.
  • Other details in this implementation are roughly described above, and are not described herein again.
  • a specific equivalent circuit diagram of the local circuit described in this implementation may be achieved by selectively adjusting the equivalent circuit diagram drawn in FIG. 10B or FIG. 12B .
  • the first LED 120 and the second LED 130 in this implementation are electrically coupled to a same low potential voltage supply source (for example, the low potential voltage supply source OVSS or OVSS′), and the second LED 130 may be selectively coupled between the high potential voltage supply source OVDD and the transistor M 7 .
  • FIG. 16 and FIG. 17 are respectively schematic configuration diagrams of local circuits of transparent display apparatuses 100 N and 1000 according to some implementations of the present disclosure. At least one difference between the local circuits that are of the transparent display apparatuses 100 N and 1000 and that are drawn in FIG. 16 and FIG. 17 and the local circuit of the foregoing transparent display apparatus lies in that, in the local circuits that are of the transparent display apparatuses 100 N and 1000 and that are drawn in FIG. 16 and FIG.
  • the electrodes E 3 and E 4 of the first LED 120 are respectively electrically coupled to the circuit junction 230 of the pixel circuit 200 and the low potential voltage supply source OVSS, and the electrodes E 1 and E 2 of the second LED 130 are respectively electrically coupled to the electrode 316 of the second switch transistor 310 and the low potential voltage supply source OVSS.
  • the first LED 120 and the second LED 130 may share the low potential voltage supply source OVSS, helping reduce manufacturing costs of the transparent display apparatus 100 .
  • Other details in this implementation are roughly described above, and are not described herein again.
  • a specific equivalent circuit diagram of the local circuit described in this implementation may be achieved by selectively adjusting the equivalent circuit diagram drawn in FIG. 10B or FIG. 12B .
  • the equivalent circuit diagram in this implementation and the foregoing equivalent circuit diagram lies in that, the first LED 120 and the second LED 130 in this implementation are electrically coupled to a same low potential voltage supply source (for example, the low potential voltage supply source OVSS or OVSS′).
  • the bi-directional optical module has the first LED, the second LED, and the at least one light-transparent area.
  • the first light-outlet surface of the first LED is away from the substrate relative to the first reflection surface.
  • the second light-outlet surface of the second LED is close to the substrate relative to the second reflection surface. In this way, the first light beam emitted by the first LED and the second light beam emitted by the second LED may travel in directions that are opposite to each other, thereby implementing bi-directional light emission of the bi-directional optical module.
  • the bi-directional optical module may simultaneously provide a light source to a display picture of the transparent display apparatus and provide a light source to a to-be-displayed article that is behind the transparent display apparatus, thereby helping improve viewing quality of the displayed article that is behind the transparent display apparatus.

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