WO2017010940A1 - Display sheets, poster display devices and methods of displaying a poster - Google Patents

Display sheets, poster display devices and methods of displaying a poster Download PDF

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Publication number
WO2017010940A1
WO2017010940A1 PCT/SG2016/050323 SG2016050323W WO2017010940A1 WO 2017010940 A1 WO2017010940 A1 WO 2017010940A1 SG 2016050323 W SG2016050323 W SG 2016050323W WO 2017010940 A1 WO2017010940 A1 WO 2017010940A1
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WO
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Application
Patent type
Prior art keywords
display sheet
light emitting
emitting devices
plurality
circuit
Prior art date
Application number
PCT/SG2016/050323
Other languages
French (fr)
Inventor
Kok Leong CHANG
Jie Zhang
Weng Yew LEE
Changyun JIANG
Siew Lay Lim
Zi En OOI
Christina PANG
Original Assignee
Agency For Science, Technology And Research
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/04Signs, boards or panels, illuminated from behind the insignia
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/20Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/04Signs, boards or panels, illuminated from behind the insignia
    • G09F2013/0418Constructional details
    • G09F2013/0445Frame details
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00Specific applications
    • G09G2380/02Applications of flexible displays
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/16Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/16Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/167Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed resistors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007Types of components
    • H05K2201/10037Printed or non-printed battery

Abstract

According to various embodiments, there is provided a display sheet including a plurality of light emitting devices; a sub-circuit storing operation parameters of the plurality of light emitting devices; and a display sheet electrical connector configured to electrically couple the display sheet to a poster display device; wherein the poster display device includes a frame and further includes a main circuit configured to operate the plurality of light emitting devices based on the operation parameters; and wherein the display sheet is configured to be detachably coupled to the frame.

Description

DISPLAY SHEETS, POSTER DISPLAY DEVICES AND METHODS OF

DISPLAYING A POSTER

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of Singapore Patent Application number 10201505588W filed 16 July 2015, the entire contents of which are incorporated herein by reference for all purposes.

TECHNICAL FIELD

[0002] The present invention relates to display sheets, poster display devices and methods of displaying a poster.

BACKGROUND

[0003] Posters are commonly used as an effective means of advertising. Increasingly, dynamic graphics or moving images are used, in place of static posters, to attract the attention of consumers. Dynamic graphics may be displayed on electronic screens, such as televisions, or monitors. These conventional electronic screens may not be suitable replacements for the traditional posters, as they are costly, bulky and are high in energy consumption. For example, they may not be suitable for use in marketing low end products where the profit margins may not justify the use of expensive electronic screens. They may also not be suitable for use at locations with space constraints or locations which lack a power outlet.

[0004] As such, there is a need for a new device that may display dynamic graphics without the abovementioned drawbacks.

SUMMARY

[0005] According to various embodiments, there may be provided a display sheet including a plurality of light emitting devices; a sub-circuit storing operation parameters of the plurality of light emitting devices; and a display sheet electrical connector configured to electrically couple the display sheet to a poster display device; wherein the poster display device includes a frame and further includes a main circuit configured to operate the plurality of light emitting devices based on the operation parameters; and wherein the display sheet is configured to be detachably coupled to the frame.

[0006] According to various embodiments, there may be provided a poster display device including a frame configured to accommodate a display sheet; a main circuit; and a frame electrical connector configured to couple the main circuit to the display sheet, wherein the display sheet includes a plurality of light emitting devices; and a sub-circuit storing operation parameters of the plurality of light emitting devices; and wherein the main circuit is configured to operate the plurality of light emitting devices based on the operation parameters.

[0007] According to various embodiments, there may be provided a method of displaying a poster, the method including: providing a display sheet, the display sheet including a plurality of light emitting devices, a sub-circuit storing operation parameters of the plurality of light emitting devices and a display sheet electrical connector; providing a poster display device the poster display device including a frame, a main circuit configured to operate the plurality of light emitting devices based on the operation parameters and a frame electrical connector; detachably coupling the display sheet to the frame; and electrically coupling the display sheet electrical connector to the frame electrical connector.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In the drawings, like reference characters generally refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the invention. In the following description, various embodiments are described with reference to the following drawings, in which:

[0009] FIG. 1 shows a conceptual diagram showing a display sheet according to various embodiments.

[0010] FIG. 2 shows a conceptual diagram showing a poster display device according to various embodiments.

[0011] FIG. 3 shows a flow diagram of a method of displaying a poster according to various embodiments.

[0012] FIG. 4 shows a schematic diagram of a display sheet according to various embodiments. [0013] FIG. 5 shows a schematic diagram showing a method of displaying a poster according to various embodiments.

[0014] FIG. 6 shows a photograph showing a display sheet prototype and a poster display device prototype.

[0015] FIG. 7 shows a photograph showing a printed light emitting sheet according to various embodiments.

[0016] FIG. 8 shows a photograph showing a battery.

[0017] FIG. 9 shows a photograph showing a memory.

[0018] FIG.10 shows a schematic diagram of the memory shown in FIG 9.

[0019] FIG. 11 shows a photograph showing a plurality of printed resistors.

[0020] FIG. 12 shows a diagram showing a plurality of printed resistors.

[0021] FIG. 13 shows a schematic diagram of a cross-section of a display sheet according to various embodiments.

[0022] FIG. 14 schematic diagram of a cross-section of a display sheet according to various embodiments.

DESCRIPTION

[0023] Embodiments described below in context of the devices are analogously valid for the respective methods, and vice versa. Furthermore, it will be understood that the embodiments described below may be combined, for example, a part of one embodiment may be combined with a part of another embodiment. Various embodiments are provided for devices, and various embodiments are provided for methods. It will be understood that basic properties of the devices also hold for the methods and vice versa. Therefore, for sake of brevity, duplicate description of such properties may be omitted. Furthermore, it will be understood that for any device or method described herein, not necessarily all the components or steps described must be enclosed in the device or method, but only some (but not all) components or steps may be enclosed.

[0024] In this context, the display sheet or the poster display device as described in this description may include a memory which is for example used in the processing carried out in the display sheet or the poster display device. A memory used in the embodiments may be a volatile memory, for example a DRAM (Dynamic Random Access Memory) or a nonvolatile memory, for example a PROM (Programmable Read Only Memory), an EPROM (Erasable PROM), EEPROM (Electrically Erasable PROM), or a flash memory, e.g., a floating gate memory, a charge trapping memory, an MRAM (Magnetoresi stive Random Access Memory) or a PCRAM (Phase Change Random Access Memory).

[0025] In an embodiment, a "circuit" may be understood as any kind of a logic implementing entity, which may be special purpose circuitry or a processor executing software stored in a memory, firmware, or any combination thereof. Thus, in an embodiment, a "circuit" may be a hard-wired logic circuit or a programmable logic circuit such as a programmable processor, e.g. a microprocessor (e.g. a Complex Instruction Set Computer (CISC) processor or a Reduced Instruction Set Computer (RISC) processor). A "circuit" may also be a processor executing software, e.g. any kind of computer program, e.g. a computer program using a virtual machine code such as e.g. Java. Any other kind of implementation of the respective functions which will be described in more detail below may also be understood as a "circuit" in accordance with an alternative embodiment.

[0026] In the specification the term "comprising" shall be understood to have a broad meaning similar to the term "including" and will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps. This definition also applies to variations on the term "comprising" such as "comprise" and "comprises".

[0027] The term "coupled" (or "connected") herein may be understood as electrically coupled or as mechanically coupled, for example attached or fixed, or just in contact without any fixation, and it will be understood that both direct coupling or indirect coupling (in other words: coupling without direct contact) may be provided.

[0028] It should be appreciated and understood that the term "substantially" may include "exactly" and "similar" which is to an extent that it may be perceived as being "exact". For illustration purposes only and not as a limiting example, the term "substantially" may be quantified as a variance of +1-5% from the exact or actual.

[0029] In order that the invention may be readily understood and put into practical effect, particular embodiments will now be described by way of examples and not limitations, and with reference to the figures.

[0030] Posters are commonly used as an effective means of advertising. Increasingly, dynamic graphics or moving images are used, in place of static posters, to attract the attention of consumers. Dynamic graphics may be displayed on electronic screens, such as televisions, or monitors. These conventional electronic screens may not be suitable replacements for the traditional posters, as they are costly, bulky and are high in energy consumption. For example, they may not be suitable for use in marketing low end products where the profit margins may not justify the use of expensive electronic screens. They may also not be suitable for use at locations with space constraints or locations which lack a power outlet. As such, there is a need for a new device that may display dynamic graphics without the abovementioned drawbacks.

[0031] FIG. 1 shows a conceptual diagram showing a display sheet 100 according to various embodiments. The display sheet 100 may include a plurality of light emitting devices 102, a sub-circuit 104 and a display sheet electrical connector 106. The sub-circuit 104 may store operation parameters of the plurality of light emitting devices 102. The display sheet electrical connector 106 may be configured to electrically couple the display sheet 100 to a poster display device. The poster display device may include a frame and a main circuit. The main circuit may be configured to operate the plurality of light emitting devices 102 based on the operation parameters. The display sheet 100 may be configured to be detachably coupled to the frame of the poster display device.

[0032] In other words, according to various embodiments, the display sheet 100 may include a plurality of light emitting devices 102. The plurality of light emitting devices 102 may be arranged in a two-dimensional array. The plurality of light emitting devices 102 may include at least one of light emitting diodes, organic light emitting diodes, electroluminescent diodes or quantum dots. The display sheet 100 may further include a sub-circuit 104 storing operation parameters of the plurality of light emitting devices 102. The operation parameters may be predetermined for the plurality of light emitting devices 102 to display at least one of an image, i.e. static graphic or an animation, i.e. dynamic graphic. The sub-circuit 104 may include an array of memory modules. The array of memory modules may include at least one of an array of resistors, an array of diodes or an array of transistors. Each memory module of the array of memory modules may store the operation parameter of a respective light emitting device 102 of the plurality of light emitting devices 102. The operation parameters may include at least one of a sequence of switching on the plurality of light emitting devices 102, a frequency of switching on the plurality of light emitting devices 102 or a brightness of the plurality of light emitting devices 102. The sub-circuit 104 may include an addressable circuit coupled to each light emitting device 102.

[0033] At least one of the plurality of light emitting devices 102 or the sub-circuit 104 may be printed on the display sheet 100 and the display sheet 100 may include a conductive layer on which the plurality of light emitting devices 102 or the sub-circuit 104 may be printed. The display sheet 100 may further include a display sheet electrical connector 106 configured to electrically couple the display sheet 100 to a poster display device. The display sheet electrical connector 106 may be configured to be connectable to a frame electrical connector of the poster display device. The display sheet electrical connector 106 may be one of an electromechanical device for joining electrical circuits as an interface using a mechanical assembly. The display sheet electrical connector 106 may include one of a plug or a jack. The display sheet 100 may be a thin film. The thin film may have a thickness at least substantially in a range of less than 2mm. The display sheet 100 may be reliable into a compact drum for transportation. The display sheet 100 may be configured to be detachably coupled to a frame of the poster display device, in other words, the display sheet 100 may be coupled to the frame and may then also be detachable from the frame. The display sheet 100 may be configured to be coupled to the frame, by being positioned in the frame. For example, the display sheet 100 may be arranged in the frame like how a photograph is arranged in a photo frame. The display sheet 100 may also be inserted into a slot in the frame. The display sheet 100 may further include a battery configured to power at least one of the main circuit, the plurality of light emitting devices 102 and the sub-circuit 104. The battery may be printed on the display sheet 100 and may be integrated into the sub-circuit 104. The poster display device may include the frame and may further comprise a main circuit configured to operate the plurality of light emitting devices 102 based on the operation parameters. The main circuit may be configured to address a selected light emitting device of the plurality of light emitting devices through the addressable circuit. The sub-circuit 104 may be configured to program a controller in the main circuit based on, for example, the operation parameters.

[0034] FIG. 2 shows a conceptual diagram showing a poster display device 200 according to various embodiments. The poster display device 200 may include a frame 202, a main circuit 204 and a frame electrical connector 206. The frame 202 may be configured to accommodate a display sheet 100. The frame 202 may include securing members configured to secure the display sheet 100 to the frame 202. For example, the securing members may be flaps that may press the display sheet 100 against the frame 202. The securing members may also be two panels that may be used to sandwich the display sheet 100. The frame 202 may include a slot for accommodating the display sheet 100. The frame 202 may include a protective layer configured to be overlaid on the display sheet 100. The frame electrical connector 206 may be configured to couple the main circuit 204 to the display sheet 100. The frame electrical connector 206 may be configured to be connectable to the display sheet connector 106 of the display sheet 100. The frame electrical connector 206 may be configured to be connectable to the sub-circuit 104. The main circuit 204 may include a plurality of drivers configured to operate the plurality of light emitting devices 102. The main circuit 204 may further include a controller and the controller may be configured to be programmable by the sub-circuit 104. The display sheet 100 may include a plurality of light emitting devices 102 and a sub-circuit 104 storing operation parameters of the plurality of light emitting devices 102. The main circuit 204 may be configured to operate the plurality of light emitting devices 102 based on the operation parameters.

[0035] FIG. 3 shows a flow diagram 300 of a method of displaying a poster according to various embodiments. In 302, a display sheet may be provided. The display sheet may include a plurality of light emitting devices, a sub-circuit storing operation parameters of the plurality of light emitting devices and a display sheet electrical connector. Providing the display sheet may include at least one of printing the plurality of light emitting devices, printing the sub-circuit or printing a battery. In 304, a poster display device may be provided. The poster display device may include a frame, a main circuit configured to operate the plurality of light emitting devices based on the operation parameters and a frame electrical connector. In 306, the display sheet may be detachably coupled to the frame. In 308, the display sheet electrical connector may be electrically coupled to the frame electrical connector.

[0036] According to various embodiments, a method of displaying a poster may include printing addressable circuits with an illumination panel, the addressable circuits configured to display a graphic design, also referred herein as graphic art. The illumination panel may be the display sheet 100. The addressable circuits may be the sub-circuit 104. The addressable circuit may be configured to control the dynamics of the graphic art. The addressable circuit may be configured to program or re-program the main circuit of a poster display device. The poster display device may be a display stand in which the illumination panel is placed. The addressable circuit may create illumination patterns using illumination segments on the illumination panel. The method may include controlling at least one of the sequence of the lighting, the location of the lighting, the frequency of the lighting or the brightness of the lighting. The lighting may refer to the plurality of illumination segments on the illumination panel. The illumination segments may be the light emitting devices 102. The illumination segments and the addressable circuit may be printed in a common printing process. The illumination panel may be provided at a low cost, as a disposable component such that it may be easily changed over when a new graphic design is to be displayed. The method may be applicable to displaying advertisements, electronic signage, decoration, promotions, decoration or arts and crafts.

[0037] According to various embodiments, the display sheet and the poster display device may be used together as a dynamic graphic device. The dynamic graphic device may be used to display promotional advertisements that feature graphical content. The graphical content may be dynamic illumination programmed by printed electronic circuits on a front graphic page. The printed electronic circuits may store information relating to the content and design of the graphical content.

[0038] According to various embodiments, a dynamic graphic advertisement device may include a poster display device and a display sheet. The poster display device may be the poster display device 200. The display sheet may be the display sheet 100. The poster display device may include a main driving circuit. The main driving circuit may be the main circuit 204. The display sheet may include sub-circuits on disposable illumination element and/or on graphic element. The display sheet may be configured to form unique dynamic graphics for advertisement and point-of-purchasing promotion. The display sheet may be printed using a printer, such as an industrial 3D printer. The printer may be able to print electrical circuit components such as resistors, capacitors, inductors, transistors, diodes and conductive lines to form circuits, electrical layouts, memories, batteries and light emitting devices.

[0039] According to various embodiments, a method of displaying a poster may provide dynamic graphics. The method may provide the flexibility to change the graphic content by changing out a display sheet 100 coupled to a poster display device 200. The graphic content may be dynamic and may be created by electronics-controlled illumination elements. The electronics may be the sub-circuit 104. The illumination elements may be the light emitting devices 102. The poster display device 200 which may include more expensive components such as the main circuit 204, may be re-usable. The main circuit 204 may include microelectronics components such as micro-controllers. The display sheet 100 may be fabricated with printed low cost flexible sub-circuits which can be disposable after use. The method may allow the integrated circuits, for example the main circuit 204 and the frame 202 of the poster display device 200 to be reused while the graphic content displayed on the display sheet 100 to be changed as needed. The graphic content may have a plurality of associated parameters such as emitting pattern, background illumination sequence, illumination frequency, and illumination power. Each display sheet 100 may have different associated parameters, for displaying different graphics.

[0040] According to various embodiments, the sub-circuit 104 may interact with the main circuit 204 to create a signature dynamic graphic, depending on the graphic design and display requirements. The sub-circuit 104 may be changed with the light emitting devices 102, depending on the graphics to be displayed, i.e. the graphic content on the display sheet 100. The sub-circuit 104 may contain information required to create the dynamics of the illumination for a graphic display, such as a promotion advertisement. The sub-circuit 104 may include data storage modules such as memory cells. The sub-circuit 104 may be produced with the printed illumination elements, i.e. the light emitting devices 102. The sub- circuit may be produced with a graphic front page. The graphic front page may include a conventional printed graphic, in other words, a non-dynamic or still picture printed with ink. The graphic front page may serve to enhance the art presented by the dynamic graphic advertisement device. In other words, the presented graphic may be a combination of the lighting presented by the light emitting devices 102 and the non-dynamic graphic art of the graphic front page. The light emitted by the light emitting devices 102 may be emitted through the non-dynamic graphic art. The graphic front page may be printed on a surface of a light emitting sheet. The light emitting sheet may be the display sheet 100. The light emitting sheet may be at least partially translucent. The graphic content may be changed by using a further display sheet that includes a further sub-circuit. The further sub-circuit may be different from the sub-circuit such that it is configured to cause the further display sheet to display the different graphic design. The further display sheet may be similar to the display sheet except for the different sub-circuit. Therefore the dynamics of the illumination may be changed by changing the sub-circuit.

[0041] According to various embodiments, the light emitting devices 102 may be configured to generate illumination, in other words, light energy. The light emitting devices 102 may be any one of light emitting diodes (LED), organic light emitting diodes (OLED), electroluminescent diodes (EL) or quantum dots (QD). The light emitting devices 102 may be arranged into an array. When specific light emitting devices 102 of the array are switched on, a graphic may be displayed. When the light emitting devices 102 are switched on and off in a particular sequence and order, a dynamic display, i.e. an animation, may be displayed. Each light emitting device 102 may show a pixel of the graphic shown on the display sheet 100. The light emitting devices may be driven by integrated circuits (ICs) in the main circuit 204 to provide basic illumination functions. The light emitting sequence, frequency and brightness may be controlled by the sub-circuit 104 on the display sheet 100.

[0042] According to various embodiments, the main circuit 204 may include an integrated circuit. The integrated circuit may include a microcontroller. The main circuit 204 may also include other basic logics and communication components. The main circuit components may typically be higher in cost. Therefore, the main circuit 204 may be designed to be reusable. The main circuit 204 may be configured to perform basic functions of driving the light emitting devices 102. An example of the main circuit 204 may be boost inverter and microcontroller. The main circuit 204 may be microelectronic-based. The main circuit 204 may be a fully-printed circuit or a hybrid including printed circuits and circuit components.

[0043] According to various embodiments, the main circuit 204 may interact with a sub- circuit 104 in a disposable display sheet 100. The main circuit 204 may receive commands from the sub-circuit 104 so that the main circuit 204 may control the light emitting devices 102 to create a dynamic graphic. By having the main circuit 204 to be a reusable item, the cost of displaying a poster may be reduced dramatically. With every change of graphic or poster, the poster display device 200 including the main circuit 204 may be reused while the display sheet 100 including the sub-circuit 104 may be replaced. In other words, the poster display device 200 may be understood to be a non-consumable item while the display sheet 100 may be understood to be a consumable item. By only changing the low cost display sheet 100 with every change in the graphic to be displayed and retaining the more costly poster display device 200, the cost of displaying the graphic may be minimized. For example, the display sheet 100 may be used to display graphics at a point of purchase (POP) or point of sales (POS). The cost for setting up a POP or POS may be reduced using the poster display device 200 in conjunction with the display sheet 100. The graphics displayed may be an advertisement for individual POS or POP items, or may indicate price or product information. The display sheet 100 may include embedded batteries so that the poster display device 200 need not carry a power source or be restricted to be positioned at locations with electricity supply. The batteries may be part of the display sheet 100 as a consumable item, to provide convenience to a user of the display sheet 100. The batteries may be designed to store enough charge sufficiently corresponding to a duration of displaying the graphic. For example, the display sheet 100 may be used to display a limited time offer of one week. The battery embedded in the display sheet 100 may be able to power the display sheet 100 and the poster display device 200 for one week, such that by the end of the one week, the battery is flat at approximately the same time as when the graphic content has become obsolete. Therefore, the display sheet 100 has exhausted its usefulness and may be disposed.

[0044] According to various embodiments, the display sheet 100 and the poster display device 200 may be used to provide programmable illumination. The graphic may be displayed using printed illumination elements on the display sheet 100. The lighting pattern of the illumination elements may be programmed or re-programmed. For example, different resistances may be used to control different light intensities. The series of resistors may be printed in different sequences to generate different lighting dynamics. Logic gates may also be used to control different light intensities. The lighting dynamics may be controlled by arranging the logic gates differently.

[0045] According to various embodiments, at least one of the display sheet 100 or the poster display device 200 may include interactive features. The display sheet 100 may include a touch sensor, so that a user may touch the display sheet 100 to trigger an action, for example the display sheet 100 may present a different graphic depending on the user selection. The poster display device 200 may include a motion sensor. The poster display device 200 may be configured to power up the display sheet 100 only when the motion sensor detects motion for example, when there are people near the poster display device 200. This feature may conserve the battery power of the display sheet 100.

[0046] The programming elements may be printed with the graphics arts, i.e. light emitting devices 102. The programming elements may be one of ROM, WORM, logics, resistors and batteries, or a combination thereof. The programmable lighting on the display sheet 100, herein also referred to as a poster, may be customized according to the design of the content. By means of a fixed illumination driver, the sequence and frequency of the illumination lighting may be programmed by the sub-circuit 104 on the poster.

[0047] FIG. 4 shows a schematic diagram 400 of a display sheet 440 according to various embodiments. The display sheet 440 may be configured to display a static graphic or a dynamic graphic or an animation. The display sheet 440 may be used as a poster or a signage. The display sheet 440 may be the display sheet 100 of FIG. 1. The display sheet 440 may include a plurality of light emitting devices 402. The light emitting devices 402 may be identical to, or similar to, the light emitting devices 102 of the display sheet 100. The display sheet 440 may further include a sub-circuit 404, which may be may be identical to, or similar to, the sub-circuit 104 of the display sheet 100. The display sheet 440 may further include a display sheet electrical connector 406, which may be identical to, or similar to, the display sheet electrical connector 106 of the display sheet 100. The display sheet 440 may further include a battery 442. Each of the battery 442 and the sub-circuit 404 may be arranged towards the back of the display sheet 440. The plurality of light emitting devices 402 may be arranged on a front of the display sheet 440. The front and the back of the display sheet 440 may be on opposing sides of the display sheet 440. In other words, the light emitting devices 402 may obscure the sub-circuit 404 and the battery 442. The sub-circuit 404 and the battery 442 may not be visible from a front of display sheet 440. The display sheet 440 may be a replaceable component or a disposable item. The display sheet 440 may be a low cost item fabricated by printing the light emitting devices 402, the sub-circuit 404 and the battery 442 onto a flexible thin film. The display sheet 440 may be coupled to a poster display device 442. The coupling may be an electrical coupling. The coupling may be achieved using the display sheet electrical connector 406 that may be plugged into the poster display device 442. The display sheet electrical connector 406 may be connected to a corresponding connector of the poster display device 442. The poster display device 442 may be a billboard or a poster stand, for inserting the display sheet 440. The poster display device 442 may be a fixed component, in other words, a permanent or semi -permanent equipment. For example, the poster display device 442 may be stationed or anchored at a desired location, such as bus stops, train stations, external facades of buildings or on walls. The display sheet 440 may be a rollable sheet that may be unrolled and inserted into the poster display device 442. The poster display device 442 may include a frame 444 that may be used to hold the display sheet 440.

[0048] FIG. 5 shows a schematic diagram 500 showing a method of displaying a poster according to various embodiments. The method may include providing a display sheet. The display sheet may be the display sheet 100 or the display sheet 440. In a first step 502, a flexible substrate 550 may be provided. The flexible substrate 550 may be a film comprising a polymer. In a second step 504, a first electrode layer layer 552 may be arranged on the flexible substrate 550. The first electrode layer may include transparent conductive oxide (TCO). The first electrode layer 552 may also include a conductive material, such as a metal. The first electrode layer 552 may be a metallic foil. The first electrode layer 552 may be provided by one of spraying, printing or painting on the flexible substrate 550. The first electrode layer 552 may include metallic nanoparticles. The nanoparticles may include gold or silver. In a third step 506, an emitter layer 554 may be provided over the first electrode layer 552. The emitter layer 554 may include a plurality of light emitting devices. The emitter layer 554 may be patterned to include the light emitting devices as an array, wherein each light emitting device may function as a pixel. The emitter layer 554 may be provided by printing and the printing may be provided at a high resolution. In a fourth step 508, an insulator layer 556 may be provided over the emitter layer 554. The insulator layer may include a non-conductive material such as silicon dioxide or a polymer. The non-conductive material may include an insulating polymer or composite of a polymer and a ceramic such as barium titanate. In a fifth step, a second electrode layer may be provided over the insulator layer 556. The second electrode layer may be separated from the emitting layer 554 by the insulator layer 556. The second electrode layer may be patterned to include a plurality of conductive lines, wherein a respective conductive line comes into contact with a respective light emitting device. To show how the electrode layer may be patterned to form a different graphic, two different electrode layers 558 A and 558B are illustrated in the schematic diagram 500. In Case A, the electrode layer 558A may be metalized. The electrode layer 558 A may provide conductive lines forming a first circuit connected to light emitting devices to provide a first graphic 560A on the display sheet 440. In Case B, the electrode layer 558B may be provide conductive lines forming a second circuit connected to light emitting devices to provide a second graphic 560B on the display sheet 440. The second circuit may differ from the first circuit in the arrangement of resistors or logic gates, such that the resulting lighting dynamics of the light emitting devices are different. For example, the second graphic 560B may be shown in a different colour from the first graphic 560A.

[0049] The electrode layer may provide an addressable circuit. The addressable circuit may be integrated with the display sheet 440. The addressable circuit may provide addressability of the relevant light emitting devices so as to dynamically operate the light emitting devices according to the predetermined graphic design. The addressability of the light emitting devices may vary depending on the graphic design.

[0050] FIG. 6 shows a photograph 600 showing a display sheet prototype 664 and a poster display device prototype 662. The display sheet prototype 664 may be a prototype of the display sheet 100 or a prototype of the display sheet 440. The poster display device prototype 662 may be a prototype of the poster display device 200. The respective prototypes may demonstrate the capabilities and functionalities of the display sheet or the poster display device although the prototypes may differ in size and construction from the display sheet or the poster display device. The poster display device prototype 662 may include a main circuit 602. The main circuit 602 may be similar to, or identical to the main circuit 204. The display sheet prototype 664 may include an illumination panel 608, an addressable circuit 604 and a battery 606. The illumination panel 608 may be similar to, or identical to the light emitting devices 102. The addressable circuit 604 may be similar to, or identical to the sub-circuit 104. The battery pack 606 may provide power to each of illumination panel 608, the main circuit 602 and the addressable circuit 604.

[0051] FIG. 7 shows a photograph 700 showing a printed light emitting sheet 702 according to various embodiments. The light emitting sheet 702 may be the display sheet 100 or the display sheet 440. The light emitting sheet 702 may be less than 1mm in thickness. The light emitting sheet 700 may include a plurality of independent lighting elements, 704 i.e. light emitting devices. The independent light elements 704 may be the light emitting devices 102. In the example shown in FIG. 7, the light emitting sheet 702 includes five light elements 740. The lighting elements 704 may be switched on or off in sequence. The lighting elements 704 may be configured to light up with a predetermined frequency.

[0052] FIG. 8 shows a photograph 800 showing a battery. The battery may be a miniaturized version of 606. The battery may be a low cost printed battery. The battery may be integrated into the sub-circuit 104. The battery may be printed as part of the sub-circuit 104. The battery may be a power source to at least one of the main circuit of the poster display device, the sub- circuit of the display sheet and the light emitting devices of the display sheet. The light emitting devices may also be referred to as illumination elements. The battery may be attached or printed on a graphic front plane to provide power for driving the sub-circuit and the illumination elements. The composition or chemistry of the battery may be selected based on the required operation parameters and the operation duration of the display sheet. The composition or chemistry of the battery may also be selected so that the battery may be suitable for one-time-use and may be safe to dispose. The battery may also be a lithium-ion battery. Due to the low cost and the green nature, i.e. environmentally-friendly nature of the printed circuit and the battery, the display sheet may be a one-time-use component. By supplying the power required by the illumination lighting, i.e. the light emitting devices and its driver using the printed battery on the display sheet, an interactive advertisement may be installed even in remote places that may be off the electricity grid.

[0053] FIG. 9 shows a photograph 900 showing a memory. The memory may be printed as part of the sub-circuit 104. The memory may be a Read only memory (ROM) or a Write once read many (WORM) data storage device. The memory may prohibit modification of information that has been written. The memory may include at least one of an array of resistors, an array of diodes, an array of transistors, or an array of combination of passives and/or active devices. The memory may store the sequence and or frequency at which the light emitting device operates. The memory may store the required information to address the main circuit 204 for required functions, for example operation parameters such as the frequency, sequence of light switching and the brightness of the lights. The memory may be a hybrid memory or a printed memory. An example of the memory is a series of printed resistors on the graphic front plan that may generate the unique sequencer for the main circuits to switch the lighting element to match the graphic design requirement.

[0054] FIG.10 shows a schematic diagram of the memory shown in FIG 9. The memory may include a first metal layer 1002, a second metal layer 1004 and a semiconductor 1006. The semiconductor 1006 may be sandwiched between the first metal layer 1002 and the second metal layer 1004. The semiconductor layer 1006 may include silicon.

[0055] FIG. 11 shows a photograph 1100 showing a plurality of printed resistors. The printed resistors may form part of the sub-circuit 104.

[0056] FIG. 12 shows a diagram 1200 showing a plurality of printed resistors. The resistance of the printed resistors may depend on a length of the each printed resistor. For example a first printed resistor 1202 may have a first length and a resistance value R. A second printed resistor 1204 having a second length, the second length being longer than the first length, may have a resistance value 2R. A third printed resistor 1206 having a third length, the third length being longer than the second length, may have a resistance value 3R. A fourth printed resistor 1208 having a fourth length, the fourth length being longer than the third length, may have a resistance value 6R. The resistance value of the printed resistor may be directly proportional to the length of the printed resistor. The resistance value of the printed resistor may be linearly directly proportional to the length of the printed resistor.

[0057] FIG. 13 shows a schematic diagram of a cross-section of a display sheet 1300 according to various embodiments. The display sheet 1300 may be an OLED. The display sheet 1300 may be the display sheet 100 or the display sheet 440. Providing the display sheet 1300 may include depositing a first electrode 1304 on a flexible substrate 1302. A hole transport layer 1306 may be deposited on the first electrode 1304. An electron blocking layer 1308 may be deposited on the hole transport layer 1306. An emissive layer 1310 may be deposited on the electron blocking layer. The emissive layer 1310 may include organic molecules or polymers. A hole blocking layer 1312 may be deposited on the emissive layer 1310. An electron transport layer 1314 may be deposited on the hole blocking layer 1312. At least one of the electron transport layer 1314, the hole transport layer 1312, the electron blocking layer 1308 and the hole blocking layer 1306 may include organic molecules or polymers, metal oxides or organometallic complexes. A second electrode 1316 may be deposited on the electron transport layer 1314. At least one of the first electrode 1304 or the second electrode 1316 may include conductive materials, such as at least one of metal, conductive polymeric, conductive metallic or conductive metallic oxide materials. At least one of the first electrode 1304 or the second electrode 1316 may be transparent for light emission. The locations and orders of the electron transport layer 1314, the hole transport layer 1306, the electron blocking layer 1308 and the hole blocking layer 1312 may be changed depending on the selected electrodes. The layers shown in FIG. 13 may be deposited via at least one of spraying, printing or painting.

[0058] FIG. 14 shows a schematic diagram of a cross-section of a display sheet 1400 according to various embodiments. The display sheet 1400 may be similar to the display sheet 1300 in that the display sheet 1400 may include the same layers as the display sheet 1300 except that the layers may be arranged differently. The display sheet 1400 may include a first electrode 1304 arranged over a substrate 1302. An electron transport layer 1314 may be arranged over the first electrode 1304. A hole blocking layer 1312 may be arranged over the electron transport layer 1314. An emissive layer 1310 may be arranged over the hole blocking layer 1312. An electron blocking layer 1308 may be arranged over the emissive layer 1310. A hole transport layer 1306 may be arranged over the electron blocking layer 1308. A second electrode 1316 may be arranged over the hole transport layer 1306.

[0059] While embodiments of the invention have been particularly shown and described with reference to specific embodiments, it should be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is thus indicated by the appended claims and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced. It will be appreciated that common numerals, used in the relevant drawings, refer to components that serve a similar or the same purpose.

Claims

Claims
1. A display sheet comprising:
a plurality of light emitting devices;
a sub-circuit storing operation parameters of the plurality of light emitting devices; and
a display sheet electrical connector configured to electrically couple the display sheet to a poster display device;
wherein the poster display device comprises a frame and further comprises a main circuit configured to operate the plurality of light emitting devices based on the operation parameters; and
wherein the display sheet is configured to be detachably coupled to the frame.
2. The display sheet of claim 1, wherein the display sheet is rollable.
3. The display sheet of claim 1, wherein the display sheet has a thickness at least substantially in a range of less than 2 mm.
4. The display sheet of claim 1, wherein the display sheet is configured to be positioned in the frame.
5. The display sheet of claim 1, wherein the display sheet is configured to be inserted into a slot in the frame.
6. The display sheet of claim 1, wherein at least one of the plurality of light emitting devices or the sub-circuit is printed on the display sheet.
7. The display sheet of claim 6, wherein the display sheet comprises a conductive layer on which the at least one of the plurality of light emitting devices or the sub-circuit is printed.
8. The display sheet of claim 1, wherein the operation parameters are predetermined for the plurality of light emitting devices to display at least one of an image or an animation.
9. The display sheet of claim 1, wherein the plurality of light emitting devices are arranged in a two-dimensional array.
10. The display sheet of claim 1, wherein the sub-circuit comprises an array of memory modules.
11. The display sheet of claim 10, wherein each memory module of the array of memory modules stores the operation parameter of a respective light emitting device of the plurality of light emitting devices.
12. The display sheet of claim 10, wherein the array of memory modules comprises at least one of an array of resistors, an array of diodes or an array of transistors.
13. The display sheet of claim 1, wherein the sub-circuit comprises an addressable circuit coupled to each light emitting device of the plurality of light emitting devices.
14. The display sheet of claim 13, wherein the main circuit is configured to address a selected light emitting device of the plurality of light emitting devices through the
addressable circuit.
15. The display sheet of claim 1, wherein the operation parameters comprises at least one of a sequence of switching on the plurality of light emitting devices, a frequency of switching on the plurality of light emitting devices or a brightness of the plurality of light emitting devices.
16. The display sheet of claim 1, wherein the sub-circuit is configured to program a controller in the main circuit.
17. The display sheet of claim 16, wherein the sub-circuit is configured to program the controller based on the operation parameters.
18. The display sheet of claim 1, wherein the display sheet further comprises a battery configured to power at least one of the main circuit, the plurality of light emitting devices and the sub-circuit.
19. The display sheet of claim 18, wherein the battery is printed on the display sheet.
20. The display sheet of claim 18, wherein the battery is integrated into the sub-circuit.
21. The display sheet of claim 1, wherein the plurality of light emitting devices comprises at least one of light emitting diodes, organic light emitting diodes, electroluminescent diodes or quantum dots.
22. The display sheet of claim 1, wherein the display sheet electrical connector is configured to be connectable to a frame electrical connector of the poster display device.
23. A poster display device comprising:
a frame configured to accommodate a display sheet;
a main circuit; and
a frame electrical connector configured to couple the main circuit to the display sheet, wherein the display sheet comprises:
a plurality of light emitting devices; and
a sub-circuit storing operation parameters of the plurality of light emitting devices; and
wherein the main circuit is configured to operate the plurality of light emitting devices based on the operation parameters.
24. The poster display device of claim 23, wherein the frame comprises securing members configured to secure the display sheet to the frame.
25. The poster display device of claim 23, wherein the frame comprises a slot for accommodating the display sheet.
26. The poster display device of claim 23, wherein the frame comprises a protective layer configured to be overlaid on the display sheet.
27. The poster display device of claim 23, wherein the frame electrical connector is configured to be connectable to a display sheet electrical connector of the display sheet.
28. The poster display device of claim 23, wherein the frame electrical connector is configured to be connectable to the sub-circuit.
29. The poster display device of claim 23, wherein the main circuit comprises a plurality of drivers configured to operate the plurality of light emitting devices.
30. The poster display device of claim 23, wherein the main circuit comprises a controller.
31. The poster display device of claim 30, wherein the controller is configured to be programmable by the sub-circuit.
32. A method of displaying a poster, the method comprising:
providing a display sheet comprising a plurality of light emitting devices, a sub-circuit storing operation parameters of the plurality of light emitting devices and a display sheet electrical connector;
providing a poster display device comprising a frame, a main circuit configured to operate the plurality of light emitting devices based on the operation parameters and a frame electrical connector;
detachably coupling the display sheet to the frame; and
electrically coupling the display sheet electrical connector to the frame electrical connector.
33. The method of claim 32, wherein providing the display sheet comprises at least one of printing the plurality of light emitting devices, printing the sub-circuit or printing a battery.
PCT/SG2016/050323 2015-07-16 2016-07-11 Display sheets, poster display devices and methods of displaying a poster WO2017010940A1 (en)

Priority Applications (2)

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SG10201505588W 2015-07-16

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070144045A1 (en) * 2005-12-23 2007-06-28 Lexmark International, Inc. Electroluminescent display system
US20080143549A1 (en) * 2006-12-15 2008-06-19 Motorola, Inc. Electrically excited poster
US20090128461A1 (en) * 2005-09-28 2009-05-21 William Scott Geldard Large scale display system
JP2013092627A (en) * 2011-10-25 2013-05-16 Bridgestone Corp Information display device
US20140268532A1 (en) * 2013-03-15 2014-09-18 Bfam Corp. Flexible electronic display and stand

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090128461A1 (en) * 2005-09-28 2009-05-21 William Scott Geldard Large scale display system
US20070144045A1 (en) * 2005-12-23 2007-06-28 Lexmark International, Inc. Electroluminescent display system
US20080143549A1 (en) * 2006-12-15 2008-06-19 Motorola, Inc. Electrically excited poster
JP2013092627A (en) * 2011-10-25 2013-05-16 Bridgestone Corp Information display device
US20140268532A1 (en) * 2013-03-15 2014-09-18 Bfam Corp. Flexible electronic display and stand

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