OLED segment code display panel and display device thereof

Abstract

An OLED segment code display panel and a display device thereof, wherein the OLED segment code display panel comprises: a substrate, the substrate comprises a display area and an edge area surrounding the display area; a first anode group located on the display area of ​​the substrate; a second anode group located on the display area of ​​the substrate; a cathode layer located on the display area and on the first anode group and the second anode group; a first driver chip, the first driver chip is electrically connected to the first anode group; a second driver chip, the second driver chip is electrically connected to the second anode group; a circuit board, the circuit board is bound together with the first driver chip and the second driver chip; a cathode connector, one end of the cathode connector is connected to the cathode layer, and the other end of the cathode connector is connected to the ground end of the circuit board. The OLED segment code display panel eliminates the problem of damage to the first driver chip and the second driver chip caused by a large current when the first driver chip and the second driver chip are electrically connected to the cathode layer, thereby improving the life of the OLED segment code display panel.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to an OLED segment code display panel and a display device thereof. Background Art

[0002] An OLED display device is a new type of matrix-type stacked display light-emitting device, whose main structure is composed of an anode layer, an organic material layer and a cathode layer, and the display is driven to emit light by an external electric field. In the prior art, in order to facilitate the routing of the cathode connector, the cathode layer of the OLED segment code display panel is usually a whole, and the OLED segment code display panel usually has two or more driver chips. When the cathode layer is a whole, these driver chips need to be electrically connected to the same cathode layer, and the other end of the cathode connector electrically connected to the cathode layer is electrically connected to the common end of multiple driver chips.

[0003] However, due to the design of some driver chips themselves, when multiple such driver chips are electrically connected to the cathode layer, a large current will appear. Continuous large current will cause damage to the driver chip and affect the life of the OLED segment code display panel. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that when there are multiple driver chips in the OLED segment code display panel that are electrically connected to the cathode layer, a large current will appear, and the continuous large current will cause damage to the driver chip.

[0005] In order to solve the above technical problems, the present invention provides an OLED segment code display panel, comprising: a substrate, the substrate comprising a display area and an edge area surrounding the display area; a first anode group located on the display area of ​​the substrate; a second anode group located on the display area of ​​the substrate; a cathode layer located on the display area and on the first anode group and the second anode group; a first driver chip located on a portion of the edge area of ​​the substrate, the first driver chip and the first anode group being electrically connected; a second driver chip located on a portion of the edge area of ​​the substrate, the second driver chip and the second anode group being electrically connected; a circuit board, the circuit board being bound together with the first driver chip and the second driver chip; a cathode connector, one end of the cathode connector being connected to the cathode layer, and the other end of the cathode connector being connected to a ground terminal of the circuit board.

[0006] Optionally, the first anode group includes a plurality of first anode layers, and the second anode group includes a plurality of second anode layers; the first driving chip is electrically connected to the plurality of first anode layers, and the second driving chip is electrically connected to the plurality of second anode layers.

[0007] Optionally, it also includes: a plurality of first anode leads located on the substrate, one end of the first anode lead is respectively connected to the first anode layer, and the other end of the first anode lead is connected to the first driving chip; a plurality of second anode leads located on the substrate, one end of the second anode lead is respectively connected to the second anode layer, and the other end of the second anode lead is connected to the second driving chip.

[0008] Optionally, the potential applied by the first driving chip to the first anode group is different from the potential applied by the second driving chip to the second anode group.

[0009] Optionally, the cathode layer is a planar cathode layer.

[0010] Optionally, the cathode connector includes a lapped region and a plurality of cathode leads isolated from each other, the lapped region is electrically connected to the cathode layer, one end of the cathode lead is connected to the lapped region, and the other end of the cathode lead is connected to the ground terminal.

[0011] Optionally, the plurality of isolated cathode leads include a first routing area lead and a second routing area lead, the grounding terminal includes a first grounding terminal and a second grounding terminal, one end of the first routing area lead is connected to the first grounding terminal, and one end of the second routing area lead is connected to the second grounding terminal.

[0012] Optionally, the cathode connector surrounds the first anode group and the second anode group.

[0013] Optionally, the circuit board is a flexible circuit board.

[0014] The present invention further provides a display device, comprising the OLED segment code display panel of the present invention.

[0015] The technical solution of the present invention has the following advantages:

[0016] In the OLED segment code display panel provided by the technical solution of the present invention, the first driver chip is electrically connected to the first anode group, the second driver chip is electrically connected to the second anode group, the circuit board is bound to the first driver chip and the second driver chip, one end of the cathode connector is connected to the cathode layer, and the other end of the cathode connector is connected to the ground end of the circuit board, the cathode layer is directly led out through the circuit board, and the cathode layer is not directly connected to the first driver chip and the second driver chip, thereby eliminating the problem of damage to the first driver chip and the second driver chip caused by a large current when the first driver chip and the second driver chip are electrically connected to the cathode layer together, thereby improving the life of the OLED segment code display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 FIG. 1 is a schematic diagram of the structure of an OLED segment code display panel in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] An embodiment of the present invention provides an OLED segment display panel, referring to Figure 1 ,include:

[0024] A substrate 100 , wherein the substrate 100 includes a display area 110 and an edge area 120 surrounding the display area 110 ;

[0025] A first anode group 101 located on the display area 110 of the substrate 100;

[0026] A second anode group 102 located on the display area 110 of the substrate 100;

[0027] A cathode layer located on the display area 110 and on the first anode group 101 and the second anode group 102;

[0028] A first driving chip 104 is located on a portion of the edge region 120 of the substrate 100 , and the first driving chip 104 is electrically connected to the first anode group 101 ;

[0029] A second driving chip 105 is located on a portion of the edge region 120 of the substrate 100 , and the second driving chip 105 is electrically connected to the second anode group 102 ;

[0030] A circuit board 106, wherein the circuit board 106 is bound together with the first driver chip 104 and the second driver chip 105;

[0031] A cathode connector, one end of which is connected to the cathode layer, and the other end of which is connected to a ground terminal of the circuit board 106 .

[0032] In the OLED segment code display panel provided by the technical solution of the present invention, the first driver chip 104 is electrically connected to the first anode group 101, the second driver chip 105 is electrically connected to the second anode group 102, the circuit board 106 is bound to the first driver chip 104 and the second driver chip 105, one end of the cathode connector is connected to the cathode layer, and the other end of the cathode connector is connected to the ground end of the circuit board 106, the cathode layer is directly led out through the circuit board 106, and the cathode layer is not directly connected to the first driver chip 104 and the second driver chip 105, thereby eliminating the problem of large current causing damage to the first driver chip 104 and the second driver chip 105 when the first driver chip 104 and the second driver chip 105 are electrically connected to the cathode layer together, thereby improving the life of the OLED segment code display panel.

[0033] In this embodiment, the substrate 100 is a glass substrate; in other embodiments, the substrate 100 is a flexible substrate.

[0034] In one embodiment, the first anode group 101 includes a plurality of first anode layers, and the second anode group 102 includes a plurality of second anode layers; the first driver chip 104 is electrically connected to the plurality of first anode layers, and the second driver chip 105 is electrically connected to the plurality of second anode layers.

[0035] Continue to refer Figure 1 The OLED segment code display panel includes: a plurality of first anode leads located on the substrate 100, one end of the first anode lead is respectively connected to the first anode layer, and the other end of the first anode lead is connected to the first driving chip 104; a plurality of second anode leads located on the substrate 100, one end of the second anode lead is respectively connected to the second anode layer, and the other end of the second anode lead is connected to the second driving chip 105.

[0036] In one embodiment, the potential applied by the first driving chip 104 to the first anode group is different from the potential applied by the second driving chip 105 to the second anode group.

[0037] In one embodiment, the cathode layer is a planar cathode layer.

[0038] In one embodiment, the cathode connector includes a lap region 107 and a plurality of cathode leads isolated from each other, the lap region 107 is electrically connected to the cathode layer, one end of the cathode lead is connected to the lap region 107, and the other end of the cathode lead is connected to the ground terminal.

[0039] In one embodiment, the plurality of isolated cathode leads include a first routing area 108 and a second routing area 109, the grounding end includes a first grounding end and a second grounding end, one end of the first routing area 108 is connected to the first grounding end, and one end of the second routing area 109 is connected to the second grounding end.

[0040] In one embodiment, the cathode connector surrounds the first anode group and the second anode group. In one embodiment, the circuit board is a flexible circuit board.

[0041] In this embodiment, the OLED segment code display panel further includes: an organic material layer, the organic material layer is located between the cathode layer and the substrate 100, and the organic material layer includes a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and / or an electron injection layer stacked in sequence. In this embodiment, the first anode group 101, the second anode group 102 and the organic material layer are etched fixed graphics, for example, they can be seven-segment graphics, used to display numbers or letters, and can also include other graphics.

[0042] Accordingly, another embodiment of the present invention further provides a display device, including the OLED segment code display panel of the previous embodiment, referring to Figure 1 , comprising: a substrate 100, the substrate 100 comprising a display area 110 and an edge area 120 surrounding the display area 110; a first anode group 101 located on the display area 110 of the substrate 100; a second anode group 102 located on the display area 110 of the substrate 100; a cathode layer located on the display area 110 and on the first anode group 101 and the second anode group 102; a first driver chip 104, located on part of the edge area 120 of the substrate 100, the first driver chip 104 and the first anode group 101 are electrically connected; a second driver chip 105, located on part of the edge area 120 of the substrate 100, the second driver chip 105 and the second anode group 102 are electrically connected; a circuit board 106, the circuit board 106 is bound together with the first driver chip 104 and the second driver chip 105; a cathode connector, one end of the cathode connector is connected to the cathode layer, and the other end of the cathode connector is connected to the ground end of the circuit board 106.

[0043] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An OLED segment display panel, characterized in that: include: A substrate, the substrate comprising a display area and an edge area surrounding the display area; a first anode group located on the display area of ​​the substrate; a second anode group located on the display area of ​​the substrate; a cathode layer located on the display area and on the first anode group and the second anode group; A first driving chip is located on a portion of the edge area of ​​the substrate, and the first driving chip is electrically connected to the first anode group; A second driving chip is located on a portion of the edge area of ​​the substrate, and the second driving chip is electrically connected to the second anode group; A circuit board, wherein the circuit board is bound together with the first driver chip and the second driver chip; A cathode connector, one end of the cathode connector is connected to the cathode layer, and the other end of the cathode connector is connected to the ground terminal of the circuit board; the cathode connector includes a lap area and a plurality of cathode leads isolated from each other, the lap area is electrically connected to the cathode layer, one end of the cathode lead is connected to the lap area, and the other end of the cathode lead is connected to the ground terminal; the plurality of cathode leads isolated from each other include a first routing area lead and a second routing area lead, the ground terminal includes a first ground terminal and a second ground terminal, one end of the first routing area lead is connected to the first ground terminal, and one end of the second routing area lead is connected to the second ground terminal.

2. The OLED segment display panel according to claim 1, characterized in that: The first anode group includes a plurality of first anode layers, and the second anode group includes a plurality of second anode layers; the first driving chip is electrically connected to the plurality of first anode layers, and the second driving chip is electrically connected to the plurality of second anode layers.

3. The OLED segment display panel according to claim 2, characterized in that: Also includes: A plurality of first anode leads located on the substrate, one end of each of the first anode leads being connected to the first anode layer, and the other end of each of the first anode leads being connected to the first driving chip; A plurality of second anode leads are disposed on the substrate, one end of each of the second anode leads is connected to the second anode layer, and the other end of each of the second anode leads is connected to the second driving chip.

4. The OLED segment display panel according to claim 1, characterized in that: The potential applied by the first driving chip to the first anode group is different from the potential applied by the second driving chip to the second anode group.

5. The OLED segment display panel according to claim 1, characterized in that: The cathode layer is a planar cathode layer.

6. The OLED segment display panel according to claim 1, characterized in that: The cathode connector surrounds the first anode group and the second anode group.

7. The OLED segment display panel according to claim 1, characterized in that: The circuit board is a flexible circuit board.

8. A display device, characterized in that: Comprising the OLED segment code display panel as described in any one of claims 1 to 7.

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