CN106597774B - Double-sided display device - Google Patents
Double-sided display device Download PDFInfo
- Publication number
- CN106597774B CN106597774B CN201611235917.5A CN201611235917A CN106597774B CN 106597774 B CN106597774 B CN 106597774B CN 201611235917 A CN201611235917 A CN 201611235917A CN 106597774 B CN106597774 B CN 106597774B
- Authority
- CN
- China
- Prior art keywords
- substrate
- light
- emitting layer
- hole
- conductive adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
Abstract
The invention discloses a double-sided display device, which comprises a first substrate and a second substrate which are arranged in a stacked manner; a first light emitting layer disposed on the first substrate; a second light emitting layer disposed on the second substrate; the light emitted by the first light-emitting layer and the light emitted by the second light-emitting layer are emitted in opposite directions; and the conductive adhesive is adhered between the first substrate and the second substrate, and the first light-emitting layer is electrically connected with the second light-emitting layer through the conductive adhesive. The double-sided display device is simple to control and low in cost.
Description
Technical Field
The invention relates to the technical field of display, in particular to a double-sided display device.
Background
The forms of electronic products are becoming diversified, and the double-sided display function becomes an important feature of new generation electronic products. For example, a dual-sided display device inside a mobile phone can display a main function window of the mobile phone on one side and display time on the other side. For example, in public use, dual-sided displays are used to allow people on both sides of the display to see the various contents of the display.
The double-sided display device produced in the industry at present is usually formed by attaching two single-sided display panels, such as a liquid crystal display device and an organic electroluminescent panel, or two organic electroluminescent panels. The process flow of forming the product by attaching the two single-sided display panels to each other is complex, the control is complex, and the cost is high.
Disclosure of Invention
The invention provides a double-sided display device, which aims to solve the problems of complex control and high cost of the double-sided display device in the prior art.
In order to achieve the above object, the present invention provides a dual-sided display device, which includes a first substrate and a second substrate stacked on each other; a first light emitting layer disposed on the first substrate; a second light emitting layer disposed on the second substrate; the light emitted by the first light-emitting layer and the light emitted by the second light-emitting layer are emitted in opposite directions; and the conductive adhesive is adhered between the first substrate and the second substrate, and the first light-emitting layer is electrically connected with the second light-emitting layer through the conductive adhesive.
The first light-emitting layer is arranged on the outer side surface of the first substrate, and the second light-emitting layer is arranged on the outer side surface of the second substrate; the conductive adhesive is adhered between the inner side surface of the first substrate and the inner side surface of the second substrate; the first substrate is provided with a first through hole, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole; the second substrate is provided with a second through hole, and the second light-emitting layer is electrically connected with the conductive adhesive through the second through hole.
The first light-emitting layer is arranged on the outer side surface of the first substrate, and the second light-emitting layer is arranged on the outer side surface of the second substrate; the second substrate is capable of being bent such that the conductive glue is adhered between the inner side of the first substrate and the outer side of the second substrate; the first substrate is provided with a first through hole, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole.
The first light-emitting layer is arranged on the outer side surface of the first substrate, and the second light-emitting layer is arranged on the outer side surface of the second substrate; the first substrate and the second substrate are both bendable such that the conductive glue is adhered between the outer side surface of the first substrate and the outer side surface of the second substrate.
The first light-emitting layer is arranged on the inner side surface of the first substrate, and the second light-emitting layer is arranged on the inner side surface of the second substrate; the first substrate or the second substrate can be bent such that the conductive glue is bonded between the inner side surface of the first substrate and the inner side surface of the second substrate.
The first light-emitting layer is arranged on the inner side surface of the first substrate, and the second light-emitting layer is arranged on the inner side surface of the second substrate; the first substrate and the second substrate can be bent, so that the conductive adhesive is adhered between the outer side surface of the first substrate and the outer side surface of the second substrate; the first substrate is provided with a first through hole, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole; the second substrate is provided with a second through hole, and the second light-emitting layer is electrically connected with the conductive adhesive through the second through hole.
The first light-emitting layer is arranged on the inner side surface of the first substrate, and the second light-emitting layer is arranged on the inner side surface of the second substrate; the first substrate is capable of being bent such that the conductive glue is bonded between the outer side surface of the first substrate and the inner side surface of the second substrate; the first substrate is provided with a first through hole, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole.
The first light-emitting layer comprises n rows of first data lines, and the second light-emitting layer comprises n rows of second data lines; the n rows of first data lines and the n rows of second data lines are arranged in a one-to-one correspondence manner; the first data line of the kth row is electrically connected with the second data line of the kth row through the conductive adhesive, or the first data line of the kth row is electrically connected with the second data line of the (n + 1-k) th row through the conductive adhesive; n is an integer greater than 1, k is an integer greater than or equal to 1 and less than or equal to n.
The double-sided display device further comprises a connecting terminal, an external control circuit used for being connected with the double-sided display device, arranged on the first substrate or the second substrate and electrically connected with the conductive adhesive.
The first light-emitting layer and the second light-emitting layer are both OLED light-emitting layers.
The double-sided display device comprises a first substrate and a second substrate which are arranged in a stacked manner; a first light emitting layer disposed on the first substrate; a second light emitting layer disposed on the second substrate; the light emitted by the first light-emitting layer and the light emitted by the second light-emitting layer are emitted in opposite directions; and the conductive adhesive is adhered between the first substrate and the second substrate, and the first light-emitting layer is electrically connected with the second light-emitting layer through the conductive adhesive. The first light-emitting layer and the second light-emitting layer for realizing double-sided display are both electrically connected to the conductive adhesive, common control of double-sided display can be realized through the same conductive adhesive, control is simple and convenient, cost is low, and light and thin design is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of a dual-sided display device according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a dual-panel display device according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a dual-sided display device according to a third embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a dual-panel display device according to a fourth embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a fifth embodiment of a dual-panel display apparatus according to the present invention;
FIG. 6 is a schematic structural diagram of a dual-panel display device according to a sixth embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a connection manner of a first data line and a second data line in the dual-sided display device according to the present invention;
FIG. 8 is a schematic structural diagram of a light-emitting layer in a dual-sided display device according to the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, a double-sided display device provided by the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
The double-sided display device comprises a first substrate, a second substrate, a first light-emitting layer, a second light-emitting layer and conductive adhesive.
The first substrate and the second substrate are arranged in a stacked mode, the first light-emitting layer is arranged on the first substrate, the second light-emitting layer is arranged on the second substrate, and light rays emitted by the two light-emitting layers are emitted towards opposite directions to achieve double-sided display.
The conductive adhesive is adhered between the first substrate and the second substrate, and the first light-emitting layer is electrically connected with the second light-emitting layer through the conductive adhesive, so that the first light-emitting layer and the second light-emitting layer can be simultaneously controlled through the conductive adhesive.
For the double-sided display device of the present invention, the positions of the two light emitting layers on the two substrates and the bonding positions of the conductive adhesives on the substrates have different designs, and detailed descriptions of 6 embodiments are given below, but the present invention is not limited to these 6 embodiments. In the description of the embodiments, the structure of the display panel of the double-sided display device is simplified, and other known structures such as an encapsulation layer structure are omitted.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a dual-sided display device according to a first embodiment of the invention.
The double-sided display device 100 of the present embodiment includes a first substrate 11, a second substrate 12, a first light-emitting layer 13, a second light-emitting layer 14, and a conductive paste 15.
The first light-emitting layer 13 is disposed on the outer surface 111 of the first substrate 11, the second light-emitting layer 14 is disposed on the outer surface 121 of the second substrate 12, and the conductive paste 15 is bonded between the inner surface 112 of the first substrate 11 and the inner surface 122 of the second substrate 12.
Since the conductive adhesive 15 and the first light emitting layer 13 need to be electrically connected and are respectively located on different surfaces of the first substrate 11, a first through hole 113 is further disposed on the first substrate 11, so that the first light emitting layer 13 can be electrically connected to the conductive adhesive 15 through the first through hole 113.
Similarly, the conductive adhesive 15 and the second light emitting layer 14 are respectively located on different surfaces of the second substrate 12, so that a second through hole 123 is disposed on the second substrate 12, and the second light emitting layer 14 is electrically connected to the conductive adhesive 15 through the second through hole 123.
Both the first light-emitting layer 13 and the second light-emitting layer 14 are electrically connected to the conductive paste 15, i.e., the first light-emitting layer 13 is electrically connected to the second light-emitting layer 14 through the conductive paste 15.
The conductive adhesive 15 for realizing the electrical connection is generally an anisotropic conductive adhesive, and conductive substances, such as Ag adhesive, for realizing the electrical connection between the light emitting layer and the conductive adhesive 15 are filled in the first through hole 113 and the second through hole 123; or soldering treatment is carried out at the first through hole 113 or the second through hole 123, so that the electric connection between the light-emitting layer and the conductive adhesive 15 is realized. In this embodiment, the first through hole 113 and the second through hole 123 may be respectively located at any position of the first substrate 11 and the second substrate 12, and the two through holes may be aligned (as shown in fig. 1 (a)); alternatively, the conductive paste 15 may be positioned on both sides of the conductive paste (see fig. 1 (b)).
The light-emitting layer is connected with the conductive substances in the through holes through metal wires, namely, a metal layer is arranged on the inner/outer surface of the substrate at the position of the through hole and serves as the metal wires, and the metal surrounding the position of the through hole can be thickened, so that the conductive substances in the through hole overflow on the thickened metal. Specifically, when the through hole and the conductive adhesive are arranged in a staggered manner or are positioned at different positions, the position of the through hole is connected with the conductive adhesive or the connecting terminal through the metal wire; when the through hole and the conductive adhesive are located at the same position, the conductive substance in the through hole and the metal layer at the position of the through hole are directly and electrically connected with the conductive adhesive. Generally, a signal line corresponds to a through hole in the light-emitting layer, so the number of the through holes is plural, and the plural through holes are generally a row or a column of plural independent holes on the substrate. In order to ensure the insulation between the through holes, the conductive adhesive is generally anisotropic conductive adhesive.
The conductive paste 15 electrically connects the first light emitting layer 13 and the second light emitting layer 14, and the external control circuit 900 may simultaneously control the first light emitting layer 13 and the second light emitting layer 14 through the conductive paste 15. Further, the double-sided display device 100 further includes a connection terminal 16, the connection terminal 16 is typically a pad, the conductive paste 15 is electrically connected to the connection terminal 16, and the connection terminal 16 is connected to the external control circuit 900.
The connection terminals 16 may be disposed on the outer surface 111 or the inner surface 112 of the first substrate 11, or on the outer surface 121 or the inner surface 122 of the second substrate 12, as desired. Since the connection terminal 16 needs to be electrically connected to the conductive paste 15, the connection terminal 16 and the conductive paste 15 are generally disposed on the same plane. That is, in the present embodiment, the connection terminal 16 is provided on the inner surface 112 of the first substrate 11 or the inner surface 122 of the second substrate 12 (see fig. 1 (b)).
In this embodiment, the conductive adhesive 15 bonded between the first substrate 11 and the second substrate 12 is used only for electrical connection, and the two substrates can be connected by the adhesive layer 17 by removing the other portion of the substrate bonded with the conductive adhesive 15 (see fig. 1 (a)); the void state may be maintained without processing (see fig. 1 (b)). The portion of the first substrate 11 and the second substrate 12 where the conductive paste 15 is adhered may have a curved shape (see fig. 1(c)), and the entire width of the two-sided display device 100 may be reduced by bending the portion.
In this embodiment, the two light-emitting layers may be of a top emission type or a bottom emission type, i.e., the first light-emitting layer 13 emits light in the X direction and directly emits light in the Y direction, and the second light-emitting layer 14 emits light in the Y direction and directly emits light in the so-called top emission type. And the bottom emission type, that is, the light emitted from the first light emitting layer 13 in the Y direction is emitted through the substrate and the second light emitting layer 14, and the light emitted from the second light emitting layer 14 in the Y direction is emitted through the substrate and the first light emitting layer 13.
Because both the two light-emitting layers in the embodiment adopt the OLED light-emitting layer, if a top light-emitting mode is adopted, the OLED light-emitting device has a larger light-emitting aperture ratio; and the bottom light emitting mode can provide a smoother display surface.
In the bottom emission type, as shown in fig. 1(d), the first light-emitting pixel 131 of the first light-emitting layer 13 and the second light-emitting pixel 141 of the second light-emitting layer 14 are disposed in a staggered manner, so that light emitted from the first light-emitting pixel 131 can be observed by the second light-emitting layer 14, and light emitted from the second light-emitting pixel 141 can be observed by the first light-emitting layer 13.
In the embodiment, the two light-emitting layers are respectively arranged on the outer side surfaces of the two substrates, the conductive adhesive is connected between the inner side surfaces of the two substrates, the two substrates are respectively provided with the two through holes, the two light-emitting layers are respectively electrically connected with the conductive adhesive through the two through holes, and the two light-emitting layers can be commonly controlled through the conductive adhesive, so that the control is simplified, the cost is reduced, and the light and thin design is facilitated.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a dual-panel display device according to a second embodiment of the present invention.
The double-sided display device 200 of the present embodiment includes a first substrate 21, a second substrate 22, a first light-emitting layer 23, a second light-emitting layer 24, and a conductive paste 25.
The first light-emitting layer 23 is disposed on the outer side surface 211 of the first substrate 21, the second light-emitting layer 24 is disposed on the outer side surface 221 of the second substrate 22, and the conductive adhesive 25 is bonded between the inner side surface 212 of the first substrate 21 and the outer side surface 221 of the second substrate 22.
If the substrates are kept in a flat state and are not processed, the inner surface 212 of the first substrate 21 and the inner surface 222 of the second substrate 22 are generally opposed to each other, and at this time, the conductive paste 25 is only adhered between the inner surfaces. In the present embodiment, conductive paste 25 is adhered between inner surface 212 of first substrate 21 and outer surface 221 of second substrate 22. Therefore, it is necessary to bend the second substrate 22 so that the portion of the outer surface 221 of the second substrate 22 faces the inner surface of the first substrate 212.
Since the conductive adhesive 25 is adhered to the outer side 221 of the second substrate 22 and the second light emitting layer 24 is also disposed on the outer side of the second substrate 22, the conductive adhesive 25 can be directly electrically connected to the second light emitting layer 22 through the traces.
In contrast, for the first light emitting layer 23, the first light emitting layer and the conductive paste 25 are respectively disposed on different surfaces of the first substrate 21, so that a first through hole 213 is further disposed on the first substrate 21, so that the first light emitting layer 23 can be electrically connected to the conductive paste 25 through the first through hole 213.
In the case where the conductive paste 25 is adhered between the inner side surface 212 of the first substrate 21 and the outer side surface 221 of the second substrate 22 in fig. 2 a, similarly, in the case where the conductive paste 25 is adhered between the outer side surface 211 of the first substrate 21 and the inner side surface 222 of the second substrate 22 (see fig. 2 b), the first substrate 21 needs to be bent, and the second substrate 22 needs to be provided with the second through hole 223. Of course, both substrates may be subjected to bending simultaneously, and conductive adhesive 25 may be bonded between inner surface 212 of first substrate 21 and outer surface 221 of second substrate 22 (see fig. 2 c).
The double-sided display device 200 of the present embodiment also includes a connection terminal 26 to which the external control circuit 900 is connected. The connection terminal 26 may be disposed at any position of the first substrate 21 or the second substrate 22 and electrically connected to the conductive paste 25. The connected external control circuit 900 can be arranged between the two substrates, so that the whole structure is more compact, the length of a data line for driving the light-emitting layer is correspondingly reduced, and the driving display performance is improved; meanwhile, the number of the scanning lines on the edge of the substrate is reduced, and the narrow frame design is facilitated. Not only the external control circuit 900 but also a battery or the like may be provided between the two substrates.
In addition, in the dual-sided display device 200 of the present embodiment, two display surfaces share one connection terminal 26, and the integrated external control circuit 900 is connected to the connection terminal 26, and further connected to a control system, a signal input device, and the like, which is beneficial to simplification of control and reduction of cost.
In this embodiment, the positions of the through holes, the positions of the connection terminals 26, the substrate bending processing modes (including arc bending, vertical bending, and the like), and the selection of the top emission mode or the bottom emission mode of the light emitting layer can be arbitrarily changed according to the actual situation, and will not be described herein again.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a dual-panel display device according to a third embodiment of the present invention.
The double-sided display device 300 of the present embodiment includes a first substrate 31, a second substrate 32, a first light-emitting layer 33, a second light-emitting layer 34, and a conductive paste 35. The first light-emitting layer 33 is provided on the outer surface 311 of the first substrate 31, and the second light-emitting layer 34 is provided on the outer surface 321 of the second substrate 32. The conductive paste 35 is adhered between the outer surface 311 of the first substrate 31 and the outer surface 321 of the second substrate 32.
The first light-emitting layer 33 and the second light-emitting layer 34 may have the same or different specifications. Both the first substrate 31 and the second substrate 32 can be bent such that the portion of the outer side surface 311 of the first substrate 31 faces the portion of the outer side surface 321 of the second substrate 32, and the conductive adhesive 35 can bond the outer side surface 311 of the first substrate 31 and the outer side surface 321 of the second substrate 32.
In this embodiment, the conductive paste 35 and the light-emitting layer are both located on the same surface of the substrate, so that a through hole is not required to be formed in the substrate. Of course, if the connection terminals of the dual-sided display device 300 and the conductive paste 35 are located on different surfaces of the substrate, the corresponding substrate may be provided with through holes so that the connection terminals and the conductive paste 35 can be electrically connected.
The first substrate 31 and the second substrate 32 may be bent in various ways, and may be designed as desired. In addition, the bent portions of the two substrates may be thinned (see fig. 3(c)), after the thinning process, a small distance, generally 0 to 1cm, may be maintained between the two substrates, and a gap may be maintained between the two substrates or an adhesive layer may be used for bonding.
In this embodiment, the arrangement of the connection terminals, the selection of top emission or bottom emission are similar to the variations of the above embodiments, and are not described again.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a dual-sided display device according to a fourth embodiment of the invention.
The double-sided display device 400 of the present embodiment includes a first substrate 41, a second substrate 42, a first light-emitting layer 43, a second light-emitting layer 44, and a conductive paste 45. The first light-emitting layer 43 is provided on the inner surface 412 of the first substrate 41, and the second light-emitting layer 44 is provided on the inner surface 422 of the second substrate 42. Conductive paste 45 is bonded between inner surface 412 of first substrate 41 and inner surface 422 of second substrate 42.
Since the first light emitting layer 43 and the second light emitting layer 44 are located between the inner surface 412 of the first substrate 41 and the inner surface 422 of the second substrate 42, that is, there is a certain distance between the first substrate 41 and the second substrate 42, in order to bond the two substrates by the conductive adhesive 45, the first substrate 41 or the second substrate 42 needs to be bent, so that the distance between the two substrates is reduced, and the substrates are more easily bonded together.
There are various ways of performing the bending process on the two substrates, including performing the bending process on one of the substrates (see fig. 1(a) and 1(c)), or performing the bending process on both substrates (see fig. 1 (b)). The connection terminal 46 in the dual-sided display device 400 can be disposed on the same side of the substrate as the conductive paste 45 (see fig. 1(a) and 1(b)), or disposed on a different side of the substrate from the conductive paste 45 (see fig. 1 (c)).
Other variations of the dual-sided display device 400 of this embodiment can be derived according to the same principles of the above embodiments, and are not described in detail.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a fifth embodiment of a dual-panel display device according to the present invention.
The double-sided display device 500 of the present embodiment also includes a first substrate 51, a second substrate 52, a first light-emitting layer 53, a second light-emitting layer 54, and a conductive paste 55.
The difference from the above embodiment is that the first light-emitting layer 53 is provided on the inner surface 512 of the first substrate 51, and the second light-emitting layer 54 is provided on the inner surface 522 of the second substrate 52. Conductive paste 55 bonds outer surface 511 of first substrate 51 and inner surface 522 of second substrate 52.
The first substrate 51 is bendable, and the first substrate 51 is provided with a first through hole 513.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a dual-panel display device according to a sixth embodiment of the invention.
The double-sided display device 600 of the present embodiment includes a first substrate 61, a second substrate 62, a first light-emitting layer 63, a second light-emitting layer 64, and a conductive paste 65.
The present embodiment is different from the above embodiments in that the first light-emitting layer 63 is provided on the inner surface 612 of the first substrate 61, and the second light-emitting layer 64 is provided on the inner surface 622 of the second substrate 62. The conductive adhesive 65 bonds the outer side surface 611 of the first substrate 61 and the outer side surface 621 of the second substrate 62.
Both the first substrate 61 and the second substrate 62 are bendable, the first substrate 61 is provided with a first through hole 613, and the second substrate 62 is provided with a second through hole 623.
The two-sided display device in the above embodiments has two display modes, one is to display 180-degree horizontally reversed images on both sides, for example, to display "person" and "in" respectively; the other is to display the same images on both sides, such as "person" and "person" respectively.
The first light-emitting layer and the second light-emitting layer in the double-sided display device are both electrically connected to the conductive adhesive, and the conductive adhesive is connected to the external control circuit through the connecting terminal, so that the external control circuit can control the first light-emitting layer and the second light-emitting layer simultaneously, and therefore the electrical connection relationship between the signal lines of the first light-emitting layer and the second light-emitting layer determines the display mode of the double-sided display panel.
The following takes the first embodiment double-sided display device 100 as an example, and specifically to the case in fig. 1(c), a connection manner between the first data line 132 of the first light-emitting layer 13 and the second data line 142 of the second light-emitting layer 14 is given. Referring to fig. 7, fig. 7 is a schematic view illustrating a connection manner of a first data line and a second data line in a dual-sided display device according to the present invention.
First, it should be noted that the "horizontal" direction in fig. 7, in which the data line extends in the a direction and the "180-degree horizontal inversion" refers to the B direction perpendicular to the data line. That is, when the user views the two-sided display device 100, the a direction is a vertical direction, the B direction is a horizontal direction, and the images displayed on both sides are horizontally reversed by 180 degrees in the B direction.
The n rows of first data lines 132 in the first light emitting layer 13 and the n rows of second data lines 142 in the second light emitting layer 14 are arranged in a one-to-one correspondence, i.e., the n rows of first data lines 132 and the n rows of second data lines 142 overlap when viewed from a direction perpendicular to the substrate.
If 180-degree horizontal reverse images are displayed on both sides, the first data line 132 of the kth column is electrically connected to the second data line 142 of the kth column through the conductive adhesive 15 (see fig. 7 (a)).
If the same image is displayed on both sides, the kth row first data line 132 is electrically connected to the (n + 1) -kth row second data line 142 through the conductive adhesive 15 (as shown in fig. 7(b)), wherein there may be a cross between the traces that implement the electrical connection, and the short circuit problem is generally avoided through the connection of the metal bridge.
In fig. 1(c), the conductive paste 15 is located on the inner side surfaces of the first substrate 11 and the second substrate 12, and the first through hole 113 and the second through hole 123 are located on the left side of the conductive paste 15; therefore, in fig. 7, the left sides of the first via 113 and the second via 123 are routed on the outer side of the substrate, which is indicated by a solid line; the right trace is on the inside of the substrate and is shown in dotted lines.
N is an integer of 1 or more; k is an integer of 1 or more and n or less.
The signal lines of the light emitting layer include scan lines, common lines, and the like in addition to the data lines described in detail above, and as for the other signal lines, the other signal lines in the first light emitting layer and the other signal lines in the second light emitting layer may be connected in a one-to-one correspondence manner through via holes or conductive paste, or signals may be supplied at connection terminal positions, respectively.
The substrate in the above embodiments may be a flexible substrate (glass, metal, plastic, or the like), or a flexible substrate (organic or mixed structure of organic and inorganic materials). As the base material, glass, transparent metal, ceramic, and any suitable transparent polymer material, for example, a polymer material such as Polyimide (PI), Polycarbonate (PC), Polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP) may be mentioned.
The luminescent layer in the invention is also provided with an encapsulation layer, and the encapsulation layer can be a film encapsulation or an outer cover encapsulation, or a combined encapsulation structure of the film and the outer cover encapsulation. Specifically, in the outer cover package, the double-sided display device further includes a package adhesive layer to bond the substrate and the housing and prevent the entry of external moisture.
Referring to fig. 8, the specific structure of the light emitting layer may be an OLED light emitting layer, and fig. 8 is a schematic structural diagram of the light emitting layer in the dual-sided display device of the present invention. In fig. 8, a light-emitting layer 700 is provided on a substrate 800, where the substrate 800 corresponds to the above-described substrate 11 and the like, and the light-emitting layer 700 includes a first electrode 71, a second electrode 72, and a light-emitting material 73.
The voltage difference between the first electrode 71 and the second electrode 72 can excite the luminescent material 73 therebetween to emit light. When the first electrode 71 is transparent and the second electrode 72 is opaque, the light-emitting layer 700 is top-emitting, i.e. the light emitted therefrom is emitted in a direction away from the substrate 800; when the first electrode 71 is opaque and the second electrode 72 is transparent, the light-emitting layer 700 is bottom-emitting, i.e., light emitted therefrom is emitted through the substrate 800.
In addition, the light emitting layer 700 further includes a TFT control switch, the TFT may be amorphous silicon or low-temperature single crystal silicon, and the TFT structure may be a bottom gate type or a top gate type.
The double-sided display device comprises a first substrate and a second substrate which are arranged in a stacked manner; a first light emitting layer disposed on the first substrate; a second light emitting layer disposed on the second substrate; the light emitted by the first light-emitting layer and the light emitted by the second light-emitting layer are emitted in opposite directions; and the conductive adhesive is adhered between the first substrate and the second substrate, and the first light-emitting layer is electrically connected with the second light-emitting layer through the conductive adhesive. The first light-emitting layer and the second light-emitting layer for realizing double-sided display are both electrically connected to the conductive adhesive, common control of double-sided display can be realized through the same conductive adhesive, control is simple and convenient, cost is low, and light and thin design is facilitated.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A dual-sided display device, characterized in that it comprises:
a first substrate and a second substrate which are arranged in a stacked manner;
a first light emitting layer disposed on an outer side surface of the first substrate;
the second light-emitting layer is arranged on the outer side surface of the second substrate; the light rays emitted by the first light-emitting layer and the second light-emitting layer are emitted in opposite directions;
the conductive adhesive is bonded between the first substrate and the second substrate, and the first light-emitting layer is electrically connected with the second light-emitting layer through the conductive adhesive;
a first through hole is formed in the first substrate, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole; a second through hole is formed in the second substrate, and the second light-emitting layer is electrically connected with the conductive adhesive through the second through hole;
alternatively, the second substrate can be bent such that the conductive glue is adhered between the inner side of the first substrate and the outer side of the second substrate; a first through hole is formed in the first substrate, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole;
conductive substances are arranged in the through holes, the light-emitting layer is connected with the conductive substances in the through holes through metal wires, and the metal wires surround the through holes; and thickening the metal wire around the through hole, wherein the conductive substance overflows from the through hole and is connected with the metal wire.
2. A dual-sided display device, characterized in that it comprises:
a first substrate and a second substrate which are arranged in a stacked manner;
a first light-emitting layer provided on an inner side surface of the first substrate;
a second light emitting layer disposed on an inner side surface of the second substrate; the light rays emitted by the first light-emitting layer and the second light-emitting layer are emitted in opposite directions;
the conductive adhesive is bonded between the first substrate and the second substrate, and the first light-emitting layer is electrically connected with the second light-emitting layer through the conductive adhesive;
the first substrate and the second substrate are both bendable such that the conductive glue is adhered between the outer side surface of the first substrate and the outer side surface of the second substrate; a first through hole is formed in the first substrate, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole; a second through hole is formed in the second substrate, and the second light-emitting layer is electrically connected with the conductive adhesive through the second through hole;
alternatively, the first substrate can be bent such that the conductive glue is adhered between the outer side of the first substrate and the inner side of the second substrate; a first through hole is formed in the first substrate, and the first light-emitting layer is electrically connected with the conductive adhesive through the first through hole;
conductive substances are arranged in the through holes, the light-emitting layer is connected with the conductive substances in the through holes through metal wires, and the metal wires surround the through holes; and thickening the metal wire around the through hole, wherein the conductive substance overflows from the through hole and is connected with the metal wire.
3. The dual-sided display device according to claim 1 or 2, wherein the first light-emitting layer includes n rows of first data lines, and the second light-emitting layer includes n rows of second data lines; the n rows of first data lines and the n rows of second data lines are arranged in a one-to-one correspondence manner;
the first data line of the kth row is electrically connected with the second data line of the kth row through the conductive adhesive, or the first data line of the kth row is electrically connected with the second data line of the (n + 1-k) th row through the conductive adhesive;
n is an integer greater than 1, k is an integer greater than or equal to 1 and less than or equal to n.
4. The dual-sided display device according to claim 1 or 2, further comprising a connection terminal for connecting an external control circuit of the dual-sided display device, provided on the first substrate or the second substrate, electrically connected to the conductive paste.
5. The dual sided display device of claim 1 or 2, wherein the first and second light emitting layers are both OLED light emitting layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235917.5A CN106597774B (en) | 2016-12-28 | 2016-12-28 | Double-sided display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235917.5A CN106597774B (en) | 2016-12-28 | 2016-12-28 | Double-sided display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106597774A CN106597774A (en) | 2017-04-26 |
| CN106597774B true CN106597774B (en) | 2020-01-03 |
Family
ID=58604734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235917.5A Active CN106597774B (en) | 2016-12-28 | 2016-12-28 | Double-sided display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106597774B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735102B (en) * | 2018-05-26 | 2021-07-02 | 矽照光电（厦门）有限公司 | Flexible display screen and production method thereof |
| CN110827696A (en) * | 2019-10-28 | 2020-02-21 | 惠州市华星光电技术有限公司 | Double-sided display screen and display device |
| CN111430406B (en) * | 2020-04-30 | 2022-10-11 | 上海天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753053A (en) * | 2004-09-24 | 2006-03-29 | 日本东北先锋公司 | Electronic apparatus, double-sided display panel and method of manufacturing the double-sided display panel |
| CN105655299A (en) * | 2014-10-02 | 2016-06-08 | 群创光电股份有限公司 | Display device |
| CN105932036A (en) * | 2016-05-10 | 2016-09-07 | 武汉华星光电技术有限公司 | Double-surface OLED display and manufacturing method thereof |
| CN105977400A (en) * | 2016-07-21 | 2016-09-28 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof and display device |
| CN105976718A (en) * | 2016-07-20 | 2016-09-28 | 武汉华星光电技术有限公司 | Display panel and displayer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040075628A1 (en) * | 2002-10-21 | 2004-04-22 | Chih-Chung Chien | Double-side display device |
| CN100379015C (en) * | 2003-08-13 | 2008-04-02 | 胜华科技股份有限公司 | Organic luminous dual-display element |
| US20070120478A1 (en) * | 2005-11-28 | 2007-05-31 | Au Optronics Corporation | Double-sided display device and method of making same |
| KR100624131B1 (en) * | 2005-11-30 | 2006-09-13 | 삼성에스디아이 주식회사 | Organic light emitting display device |
| CN103904096B (en) * | 2012-12-27 | 2018-02-27 | 上海天马微电子有限公司 | Double-sided OLED display panel and manufacture method |
| CN106206991B (en) * | 2016-08-31 | 2018-09-28 | 武汉华星光电技术有限公司 | Double-sided OLED display device |
-
2016
- 2016-12-28 CN CN201611235917.5A patent/CN106597774B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1753053A (en) * | 2004-09-24 | 2006-03-29 | 日本东北先锋公司 | Electronic apparatus, double-sided display panel and method of manufacturing the double-sided display panel |
| CN105655299A (en) * | 2014-10-02 | 2016-06-08 | 群创光电股份有限公司 | Display device |
| CN105932036A (en) * | 2016-05-10 | 2016-09-07 | 武汉华星光电技术有限公司 | Double-surface OLED display and manufacturing method thereof |
| CN105976718A (en) * | 2016-07-20 | 2016-09-28 | 武汉华星光电技术有限公司 | Display panel and displayer |
| CN105977400A (en) * | 2016-07-21 | 2016-09-28 | 京东方科技集团股份有限公司 | Display panel and preparation method thereof and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106597774A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20230292443A1 (en) | Flexible circuit board and display device including the same | |
| KR102581839B1 (en) | Display device | |
| KR101736930B1 (en) | Flexible organic light emitting display device | |
| US10559597B1 (en) | Display panel and display device | |
| US9811169B2 (en) | Flexible array substrate, display panel having the same, keyboard assembly, and electronic device thereof | |
| KR101476687B1 (en) | Display device using semiconductor light emitting device | |
| CN106531765B (en) | Display device | |
| JP2018105976A (en) | Display device | |
| US11086363B2 (en) | Display panel, display apparatus, and foldable display apparatus | |
| US11131892B2 (en) | Display device | |
| US20180286316A1 (en) | Display device and circuit member | |
| CN106647069B (en) | Double-sided display device | |
| JP2016018758A (en) | Organic el display device and method of manufacturing organic el display device | |
| KR102654664B1 (en) | Organic light emitting display device | |
| US11183672B2 (en) | Display device having first and second adhesive portions | |
| CN111048568B (en) | Display panel and display device | |
| CN106597774B (en) | Double-sided display device | |
| KR20200083860A (en) | Display device | |
| CN114253429A (en) | Display device and driving apparatus | |
| CN106783925B (en) | A kind of double face display panel and double-side display device | |
| JP2008033094A (en) | Display device | |
| KR20160139468A (en) | Display device using semiconductor light emitting device | |
| JP2006210809A (en) | Wiring board and mounting structure, and electro-optical device and electronic equipment | |
| JP2005268282A (en) | Mounted structure of semiconductor chip and display device using it | |
| KR20070051619A (en) | Dual direction displayable oled display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |