CN216052516U - Double-sided display panel and display device - Google Patents
Double-sided display panel and display device Download PDFInfo
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- CN216052516U CN216052516U CN202122354596.3U CN202122354596U CN216052516U CN 216052516 U CN216052516 U CN 216052516U CN 202122354596 U CN202122354596 U CN 202122354596U CN 216052516 U CN216052516 U CN 216052516U
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Abstract
The application belongs to the technical field of show, provides a two-sided display panel and display device, and two-sided display panel includes substrate, a plurality of front light source bodies and a plurality of back light source bodies, and wherein, the front of substrate is located to a plurality of front light source bodies, and the substrate back is located to a plurality of back light source bodies, and the front light source body includes: the front driving chip is arranged between the front LED chip group and the base material; the back light source body includes: the back driving chip is arranged between the back LED chip group and the base material, the light source bodies are arranged on two sides of the base material, double-sided display is achieved, pictures can be displayed synchronously and asynchronously, application scenes of the display panel are greatly expanded, and more picture selectivity and visual feast are provided for users.
Description
Technical Field
The application relates to the technical field of display, in particular to a double-sided display panel and a display device.
Background
At present, a display panel mainly displays on one side, but in many occasions, for example, in digital signage, window inquiry facilities, advertisement playing facilities in public places such as exhibition halls and the like, two persons often watch a display screen from the front side and the back side of the display panel at the same time.
However, in order to realize a double-sided Display, a combination of two independent Liquid Crystal Display (LCD) panels is generally used, which has problems of large panel thickness and high cost.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a double-sided display panel and a display device, which aim at solving the problems of large panel thickness and high cost of the existing double-sided display panel.
A first aspect of an embodiment of the present application provides a dual-sided display panel, including: a substrate; a plurality of front light source bodies arranged on the front surface of the base material; and a plurality of back light source bodies arranged on the back of the substrate. Wherein the front light source body includes: the front driving chip is arranged between the front LED chip group and the base material; the back light source body includes: the back drive chip is arranged between the back LED chip group and the base material.
Optionally, the front light source bodies are arranged in an array, the back light source bodies are arranged in an array, and the front light source bodies and the back light source bodies are in one-to-one correspondence.
Optionally, the front LED chip group includes a red LED chip, a green LED chip, and a blue LED chip, and the back LED chip group includes a red LED chip, a green LED chip, and a blue LED chip.
Optionally, a power conductive through hole is arranged between the front light source body and the corresponding back light source body, a power lead is arranged on the front surface of the substrate or on the back surface of the substrate, the power conductive through hole is connected with the power lead, and the positive contact of the front driving chip and the positive contact of the back driving chip are electrically connected with the power conductive through hole.
Optionally, a ground conductive through hole is arranged between the front light source body and the corresponding back light source body, a ground lead is arranged on the front surface of the substrate or on the back surface of the substrate, the ground conductive through hole is connected with the ground lead, and the ground contact of the front driving chip and the ground contact of the back driving chip are electrically connected with the ground conductive through hole.
Optionally, the substrate is a flexible transparent flexible film substrate.
Optionally, the thickness of the flexible transparent flexible film substrate is 0.1-1 mm.
Optionally, the flexible transparent flexible film substrate is any one of a polyimide film, a polyester film, a cyclic olefin polymer film and a liquid crystal polymer film.
Optionally, the dual-sided display panel further includes: the front sealing colloid covers the front light source bodies and is attached to the front surface of the base material; and the back sealing colloid covers a plurality of the back light source body and is attached to the back surface of the substrate.
A second aspect of the embodiments of the present application provides a display device, which includes a controller and the dual-sided display panel according to any of the embodiments, wherein the controller is electrically connected to the front-side driving chip and the back-side driving chip.
The embodiment of the application provides a double-sided display panel and display device, through set up the light source body at substrate two sides, realizes the effect of two-sided demonstration, both can synchronous display picture, also can asynchronous display picture, very big expansion display panel's application scene, provide more picture selectivity and vision feast for the user.
Drawings
Fig. 1 is a schematic partial structural diagram of a dual-sided display panel according to an embodiment of the present disclosure;
fig. 2 is another schematic structural diagram of a portion of a dual-sided display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a dual-sided display panel according to an embodiment of the present disclosure;
fig. 4 is another schematic structural diagram of a dual-sided display panel according to an embodiment of the present disclosure;
fig. 5 is an exploded schematic view of a dual-sided display panel according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
On one hand, the flexible transparent display screen adopts a Light source with a built-in drive ic (integrated circuit) and an LED (Light-Emitting Diode) integrally packaged, the Light source has an attached substrate, and is fixed on a transparent flexible film substrate in a manner of mounting a device, however, most of the existing Light source bodies adopt a packaging body formed by welding a conducting wire with an internal chip, the size of the Light source body formed in the manner is difficult to reduce, and because the unit area of the packaged Light source body is difficult to reduce, the area of the transparent flexible film substrate needs to be covered by the flexible film substrate in a mounting manner, so that the finished transparent module cannot achieve the effect of higher permeability.
On the other hand, the existing transparent display device considers one-side display and has no luminous body on the back, so that the finished module is applied to the technical field of transparent display and cannot meet the requirement of multidirectional display visual effect.
In order to solve the above technical problem, an embodiment of the present invention provides a dual-sided display panel, which is shown in fig. 1, fig. 2 and fig. 3, and includes a substrate 10, a plurality of front light source bodies 20, and a plurality of back light source bodies 30.
The front light source body 20 includes: the front driving chip 21 is arranged between the front LED chip group 22 and the base material 10; the rear light source body 30 includes: the back drive chip 31 is arranged between the back LED chip group 32 and the base material 10.
Specifically, the front light source bodies 20 are arranged on the front surface of the substrate 10, the back light source bodies 30 are arranged on the back surface of the substrate 10, and the light source bodies are arranged on the two surfaces of the substrate 10, so that a double-surface display effect is realized, the pictures can be displayed synchronously or asynchronously, the application scenes of the display panel are greatly expanded, and more picture selectivity and visual feast are provided for users.
In this embodiment, the front driving chip 21 and the front LED chip group 22 adopt the full-flip vertical stack mode to be mounted into the front light source body 20, the back driving chip 31 and the back LED chip group 32 adopt the full-flip vertical stack mode to be mounted into the back light source body 30, in the same unit area, the area that the mounted chip sheltered from is saved through the full-flip vertical stack process, thereby the transparent display panel has realized better permeability effect, the problems of great panel thickness and high cost of the existing double-sided display panel are solved.
In an embodiment, as shown in fig. 4 and 5, the front encapsulant 40 covers the front light sources 20 and is attached to the front surface of the substrate 10, so that the front encapsulant 40 is disposed above and around the front light sources 20 to effectively protect the front light sources 20, the back encapsulant 50 covers the back light sources 30 and is attached to the back surface of the substrate 10, so that the back encapsulant 50 is disposed above and around the back light sources 30 to effectively protect the back light sources 30, and the double-sided display panel is sealed by filling the entire surface with the outer encapsulant.
In one embodiment, referring to fig. 3, fig. 4 a, and fig. 4 b, the front light source bodies 20 are arranged in an array, and the back light source bodies 30 are arranged in an array, wherein the front light source bodies 20 correspond to the back light source bodies 30 one by one.
Specifically, as shown in b in fig. 4, a double-sided display effect can be achieved by attaching light source bodies to both sides of the substrate 10, and in a specific application embodiment, the display frames on both sides of the double-sided display panel can be synchronous or asynchronous, so that the application scene of the double-sided display panel is expanded, and the multi-directional display effect is satisfied.
In this embodiment, the front light source bodies 20 correspond to the back light source bodies 30 one to one, so that the front light source bodies 20 and the back light source bodies 30 are arranged in an overlapping manner, the area of the substrate 10 occupied is reduced, the transparency of the display panel is increased, and the problems of large panel thickness and high cost of the conventional double-sided display panel are solved.
In one embodiment, the front LED chip set 22 includes red, green and blue LED chips, and the back LED chip set includes red, green and blue LED chips.
Specifically, the display panel realizes color image display by the red light LED chip, the green light LED chip, and the blue light LED chip in the front LED chip group 22, and the red light LED chip, the green light LED chip, and the blue light LED chip in the back LED chip group.
In one embodiment, a power conductive via is disposed between the front light source 20 and the corresponding back light source 30, a power lead is disposed on the front surface of the substrate 10 or on the back surface of the substrate 10, the power conductive via is connected to the power lead, and the positive contact of the front driving chip 21 and the positive contact of the back driving chip 31 are electrically connected to the power conductive via. In this embodiment, the power conductive through hole is connected to a power wire, and the positive contact of the front driving chip 21 and the positive contact of the back driving chip 31 are respectively electrically connected to two ends of the power conductive through hole, so that the front light source body 20 and the back light source body 30 are connected in parallel to the power wire, and share one power wire, thereby saving the area of the substrate 10 occupied by the wires, increasing the transparency of the display panel, and solving the problems of large panel thickness and high cost of the existing double-sided display panel.
In an embodiment, the front surface of the substrate 10 and the back surface of the substrate 10 are respectively provided with a driving circuit, the driving circuit on the front surface of the substrate 10 is connected in series with the driving signal interfaces of the front driving chips 21, and the driving circuit on the back surface of the substrate 10 is connected in series with the driving signal interfaces of the back driving chips 31, so that not only is a double-sided circuit layout realized, but also the area of the substrate 10 occupied by the conducting wires is saved by the serial connection mode, the transparency of the display panel is increased, and the problems of large panel thickness and high cost of the existing double-sided display panel are solved.
In one embodiment, a ground conductive via is disposed between the front light source 20 and the corresponding back light source 30, a ground conductive line is disposed on the front surface of the substrate 10 or the back surface of the substrate 10, the ground conductive via is connected to the ground conductive line, and the ground contact of the front driving chip 21 and the ground contact of the back driving chip 31 are electrically connected to the ground conductive via. In this embodiment, the ground conductive via is connected to a ground wire, and the ground contact of the front driving chip 21 and the ground contact of the back driving chip 31 are respectively electrically connected to two ends of the ground conductive via, so that the front light source 20 and the back light source 30 are connected in parallel to the ground wire, and share the ground wire, thereby saving the area of the substrate 10 occupied by the ground wire and increasing the transparency of the display panel.
Specifically, through set up electrically conductive through-hole in substrate 10 to realize two-sided circuit layout, can adopt flexible transparent film material as substrate 10, reduced substrate 10's thickness, thereby reduce the thickness of display panel, realize two-sided circuit layout, directly promoted the shaping efficiency of product, also ensured the uniformity of product, satisfied the effect that two-sided was shown.
In one embodiment, the conductive through holes can be formed in the flexible transparent film material substrate 10 in a laser drilling mode, the laser drilling technology has the advantages of high precision, strong universality, high efficiency, low cost, remarkable comprehensive technical and economic benefits, regular hole walls of small holes drilled by laser equipment, no burrs, good quality, capability of ensuring the consistency of the sizes and the appearances of the small holes, high drilling speed, high production efficiency and the like particularly when a large number of the same small holes are drilled.
In one embodiment, the thickness of the flexible transparent flexible film substrate 10 can be 0.1-1mm, the flexible material characteristics of the flexible film substrate 10 can realize the foldable bending effect, the flexible transparent flexible film substrate 10 is used as the substrate 10 of the double-sided display panel and applied to the application field of the transparent display screen, and the application scene of the double-sided display screen can be greatly expanded.
In one embodiment, the flexible transparent flexible film substrate 10 is any one of a polyimide film, a polyester film, a cyclic olefin polymer film, and a liquid crystal polymer film.
In one embodiment, the flexible transparent flexible film substrate 10 is a polyester film, wherein the polyester film is a film material prepared by using polyethylene terephthalate as a raw material, making a thick sheet by an extrusion method, and performing biaxial stretching, and the polyester film is a high polymer plastic film, which has excellent comprehensive performance and is more and more popular with consumers, and is a colorless transparent glossy film, which has excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high temperature and low temperature resistance, and good chemical resistance, oil resistance, air tightness and aroma retention, and is applied to the substrate 10, so that the substrate 10 has the advantages of good heat resistance, excellent boiling resistance, low temperature freezing resistance, good oil resistance and chemical resistance, and further, the polyester film is used as the substrate 10 of the double-sided display panel, the method is applied to the application field of the transparent display screen, and can greatly expand the application scene of the double-sided display screen.
In one embodiment, the substrate 10 may be of other configurations and materials, such as glass or Printed Circuit Board (PCB).
In one embodiment, a printed circuit board is used that has wiring on both sides.
In a particular application, the printed circuit board requires appropriate circuit connection structures between the two sides, while providing the required wiring on both sides.
Specifically, the circuit connection between the two sides of the printed circuit board is realized through a conductive through hole serving as a bridge between circuits, the conductive through hole can be a small hole which is filled or coated with metal and is arranged on the PCB, and the small hole is utilized to connect the wires on the two sides of the PCB.
In this embodiment, since the area of the double-sided board is twice larger than that of the single-sided board, the double-sided board solves the difficulty of wiring staggering in the single-sided board (the double-sided board can pass through the via hole to the other side), so that a circuit more complicated than the single-sided board can be applied to the double-sided display panel in the present application.
In one embodiment, the front LED chip group 22 and the front driving chip 21 are fixed on the substrate 10 in a vertical full flip manner, and the back LED chip group 32 and the back driving chip 31 are fixed on the substrate 10 in a vertical full flip manner, which can effectively solve the problems of heat dissipation and current crowding, and solve the problems of large panel thickness and high cost of the conventional double-sided display panel.
In one embodiment, the front encapsulant 40 and the back encapsulant 50 may be epoxy resin, because the front encapsulant 40 and the back encapsulant 50 have very wide high and low temperature resistance and electrical insulation capability, can maintain good physical properties and electrical properties within a temperature range of-60 ℃ to 200 ℃, have excellent ozone resistance and ultraviolet aging resistance, effectively protect the LED chip from erosion of the natural environment, improve the stability of the LED chip, and effectively reduce the damage of external impact to the LED chip after packaging, thereby playing a role of buffering pressure and further improving the stability of the double-sided display panel.
In one embodiment, the front driving chip 21 and the front LED chip group 22 are fully stacked upside down, the back driving chip 31 and the back LED chip group 32 are fully stacked upside down, and the front light source body 20 and the back light source body 30 are also stacked vertically, and in the same unit area, the area covered by the mounted chip and the light source body is released, so that the display panel realizes better permeability effect; the double-sided glue sealing is carried out in a mode of filling the whole surface with the external sealing glue body, and compared with a module formed by fixing the traditional packaging body light source on the carrier, the double-sided glue sealing directly improves the forming efficiency of a product and ensures the consistency of the product; due to the mode of mounting the light source body on the double surfaces, the double-sided flexible transparent display panel can be realized, and the double-sided display effect presented by the double-sided flexible display panel can be synchronous pictures and can also be asynchronous pictures, so that the display module has the advantages that the display module is compared with the display module of the traditional external driving scheme, the complex control system scheme of the single-sided transparent display module and the effect of a single display picture are incomparable; the product is applied to the market of the terminal transparent display device, can meet the requirement of multidirectional picture display effect and can achieve better visual permeability, thereby improving the competitiveness of the product in the market.
In one embodiment, a flexible transparent film material is used as a via hole to realize a double-sided circuit layout, the flexible film material forming the double-sided circuit is used as a substrate carrier, the front LED chip set 22 (including different R/G/B colors) and the front driver chip 21 are directly fixed on the front surface of the substrate 10 by the existing packaging technology (such as a flat package technology, a dual in-line package technology, etc.), the back LED chip set 32 (including different R/G/B colors) and the back driver chip 31 are fixed on the back surface of the substrate 10, the front LED chip set 22 and the back LED chip set 32 are fixed on the transparent substrate in a vertical full flip-chip manner, and the innovative technical manner of fixing the front LED chip set 22 and the back LED chip set 32 is utilized to save the range shielded by mounting the LED chip set in the unit area, the permeability of the transparent display module is improved, double-sided glue sealing is carried out on the module in a mode of filling the whole surface with the outer sealing glue, and compared with a module formed by fixing a traditional packaging body light source on a carrier in an SMT mode, the double-sided glue sealing method directly improves the forming efficiency of a product module and also ensures the consistency of the product module; finally, the formed LED chip group, the driving chip and the transparent carrier plate are sealed into a whole, and the double-sided transparent soft film display module device can meet the double-sided display effect after being applied.
In one embodiment, the Package adopts Dual In-line Package (DIP) technology, the integrated circuit chip is packaged by Dual In-line, most of small and medium-scale integrated circuits adopt the Package form, the number of pins of the integrated circuit chip is generally not more than 100, and the CPU chip of the Dual In-line Package has two rows of pins and needs to be inserted into a chip socket with the Dual In-line Package structure; of course, the dual in-line package can also be directly inserted into a circuit board with the same number of welding holes and geometric arrangement for welding, the dual in-line package chip should be carefully inserted into and pulled out of a chip socket so as to avoid damaging pins, and the dual in-line package structure has the following structural forms: multilayer ceramic dual in-line DIP, single layer ceramic dual in-line DIP, lead frame DIP (glass-containing ceramic sealed, plastic encapsulated, ceramic low melting glass encapsulated), and the like; the dual in-line package technology is suitable for through-hole welding on a PCB (printed circuit board), is convenient to operate, and has larger ratio between the chip area and the package area, so the volume is larger.
The embodiment of the present application further provides a display device, which includes a controller and the dual-sided display panel as in the above embodiments, wherein the controller is electrically connected to the front driving chip 21 and the back driving chip 31 to control the dual-sided display panel to display images.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A dual-sided display panel, comprising:
a substrate;
a plurality of front light source bodies arranged on the front surface of the base material; and
a plurality of back light source bodies arranged on the back of the substrate;
wherein the front light source body includes: the front driving chip is arranged between the front LED chip group and the base material;
the back light source body includes: the back drive chip is arranged between the back LED chip group and the base material.
2. The dual-sided display panel of claim 1, wherein the front light sources are arranged in an array and the back light sources are arranged in an array, wherein the front light sources and the back light sources are in one-to-one correspondence.
3. The dual sided display panel of claim 2, wherein the front side LED chip sets comprise red LED chips, green LED chips, and blue LED chips, and the back side LED chip sets comprise red LED chips, green LED chips, and blue LED chips.
4. The dual-sided display panel of claim 3, wherein a power conductive via is disposed between the front light source and the corresponding back light source, the front side or the back side of the substrate is provided with a power lead, the power conductive via is connected to the power lead, and the positive contact of the front driving chip and the positive contact of the back driving chip are electrically connected to the power conductive via.
5. The dual-sided display panel of claim 3 or 4, wherein a ground conductive via is disposed between the front light source and the corresponding back light source, a ground conductive line is disposed on the front side of the substrate or the back side of the substrate, the ground conductive via is connected to the ground conductive line, and the ground contact of the front driving chip and the ground contact of the back driving chip are electrically connected to the ground conductive via.
6. The dual sided display panel of claim 3, wherein the substrate is a flexible transparent film substrate.
7. The dual sided display panel of claim 6, wherein the flexible transparent film substrate has a thickness of 0.1 mm to 1 mm.
8. The dual-sided display panel of claim 7, wherein the flexible transparent flexible film substrate is any one of a polyimide film, a polyester film, a cyclic olefin polymer film, and a liquid crystal polymer film.
9. The dual-sided display panel of claim 6, wherein the dual-sided display panel further comprises:
the front sealing colloid covers the front light source bodies and is attached to the front surface of the base material; and
the back seals the colloid, it is a plurality of that back seals the colloid cover the back light source body and laminating the substrate back.
10. A display device comprising a controller and the dual-sided display panel according to any one of claims 1 to 9, wherein the controller is electrically connected to the front driving chip and the back driving chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354596.3U CN216052516U (en) | 2021-09-27 | 2021-09-27 | Double-sided display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354596.3U CN216052516U (en) | 2021-09-27 | 2021-09-27 | Double-sided display panel and display device |
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| Publication Number | Publication Date |
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| CN216052516U true CN216052516U (en) | 2022-03-15 |
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| CN202122354596.3U Active CN216052516U (en) | 2021-09-27 | 2021-09-27 | Double-sided display panel and display device |
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- 2021-09-27 CN CN202122354596.3U patent/CN216052516U/en active Active
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