CN210167356U

CN210167356U - OLED module and OLED module lamp with reduced failure

Info

Publication number: CN210167356U
Application number: CN201921138363.6U
Authority: CN
Inventors: 卢泓; 叶子云; 徐亚晨
Original assignee: Jiangsu One Light Technology Co Ltd
Current assignee: Jiangsu One Light Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-03-20
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses an OLED module and OLED module lamps and lanterns that lose efficacy and reduce, including OLED panel, flexible line way board, chip and connect the electronic component on the flexible line way board, be provided with the recess at the limit portion of OLED panel, cover the flexible line way board on the recess, be provided with corresponding pad on the flexible line way board, chip welded connection is on the pad, and the electric current flows into the OLED panel through the chip; the lamp comprises a plurality of OLED modules, the OLED modules are connected in a parallel or series-parallel combination mode, and a fuse wire is connected in series on each OLED module during parallel connection. The utility model discloses under the condition that does not influence the OLED panel light, thin characteristic, the OLED panel can keep the uniformity of constant current output and luminance. When the single panel module in the OLED lamp is short-circuited or open-circuited, other lamp pieces are not influenced to continue working, and the failure probability of the OLED lamp is reduced.

Description

OLED module and OLED module lamp with reduced failure

Technical Field

The utility model relates to a OLED lighting technology field, concretely relates to OLED module lamps and lanterns of OLED module and inefficacy reduction.

Background

The organic light-emitting device OLED has the advantages of energy conservation, health, lightness, thinness, environmental protection, self-luminescence, short response time, simple structure, realization of flexibility and the like, is concerned by more and more students and enterprises in the fields of illumination and display, and has wide development prospect.

OLED devices are typically constructed from a substrate on which two thin film electrodes are formed, and a multilayer organic film is formed between the two electrodes, such that the device will emit light when power is applied between the two electrodes. The most commonly used substrates are made of transparent glass, and the light emitted after the device is powered is transmitted through the glass substrate and into the air for display or illumination, which are referred to as bottom emission devices. Some devices also emit light from the device face, which is called a top-emitting device.

The current applications of OLED devices are mainly in two areas: OLED lighting and OLED display. In OLED lighting, OLED devices are often fabricated into OLED panels of various sizes and patterns, and then each OLED panel is subjected to design processing to form an OLED panel module. Because of the characteristics of energy conservation, health, environmental protection, simple structure and the like of OLED lighting, the OLED lighting panel module is usually applied to the directions of table lamps, automobile lamps, baby lamps, wall lamps and the like at present. In these lamp applications, several, tens or even tens of OLED panel modules are often required to be combined for use due to the structural design of the lamp, the brightness requirement, or other factors, and the combined design requires that the brightness of the lamp should be consistent. Since the OLED panel is characterized in that the current density affects the panel brightness, the OLED module brightness of the OLED panel is usually controlled by using a current driving method.

Due to the current driving characteristics of the OLED panel, in the current design of the OLED lighting fixture, there are two general connection modes of the OLED panel module: a series combination and a parallel combination.

The series combination has two problems: 1. when one panel module is broken, the whole OLED lamp is not bright; 2. the lamp needs to be externally connected with a constant current power supply.

The parallel combination also has problems: when the voltage is driven, due to the product diversity, the actual input current of each OLED panel is different, so that the brightness is inconsistent, and the use requirement of the lamp cannot be met.

In summary, the problem of series failure is difficult to solve while the brightness of the OLED panel is kept consistent in the OLED lamp.

In order to solve the problem, the current method in the industry is to drive each OLED module by independent current so that each OLED panel can be controlled independently, although the method can solve the problem, the circuit is complex, lamps assembled by 5 pieces of OLED modules can be selected, and when one lamp is provided with more than ten pieces of OLED modules, the scheme cannot be implemented quickly.

Disclosure of Invention

In order to solve the problem, the utility model provides a OLED module makes OLED module can inside produce constant current, has both reached the demand of lamps and lanterns to the luminance uniformity of OLED panel, can reduce the risk that OLED module and lamps and lanterns became invalid again, and simple structure is feasible simultaneously.

In order to achieve the purpose, the utility model discloses a realize through following technical scheme:

the utility model relates to an OLED module, including OLED panel, flexible line way board, chip and connect the electronic component on the flexible line way board, be provided with the recess at the limit portion of OLED panel, it has the flexible line way board to cover on the recess, is provided with corresponding pad on the flexible line way board, and chip welded connection is on the pad, and the electric current flows in the OLED panel through the chip.

The utility model discloses a further improvement lies in: the number of the grooves is 1-4, and the number of the flexible circuit boards corresponds to that of the grooves.

The utility model discloses a further improvement lies in: and the groove is provided with a conductive film which is made into a pattern, and the conductive film at least leads out a group of positive and negative electrodes on the OLED panel.

The utility model discloses a further improvement lies in: the flexible circuit boards are bound on the conductive films on the grooves through ACF or ACP, wherein at least one flexible circuit board is provided with a positive electrode bonding pad and a negative electrode bonding pad which lead out the positive electrode and the negative electrode on the OLED panel, and the distance between the positive electrode bonding pad and the negative electrode bonding pad is close to or equal to the length of the chip.

The utility model discloses a further improvement lies in: a heat sink is disposed on the chip.

The utility model discloses a further improvement lies in: three pins are arranged on the chip, namely pins A, B and C, wherein pin A is welded with the positive electrode input line of the bonding pad, pin B is welded with the negative electrode of the bonding pad, and pin C is welded with the negative electrode input line of the bonding pad.

The utility model discloses a further improvement lies in: the width of the chip is smaller than that of the groove, and the height of the chip is lower than the depth of the groove.

The utility model discloses a OLED module lamps and lanterns that became invalid and reduce, including the above-mentioned OLED module of several, the several OLED module is connected through parallelly connected or the combination mode of connecting in series-parallel, during parallel connection, establishes ties a fuse on every OLED module.

The utility model has the advantages that: the utility model discloses a OLED module lamps and lanterns, when the OLED panel is when parallel connection, luminous luminance still remains unanimous, has avoidd the risk that the OLED module series connection became an open circuit inefficacy, and the current-limiting chip of OLED module when the circuit voltage of OLED panel appears undulant, and current-limiting chip stabilization current output makes the OLED panel not influenced by undulant, adopts the structure of recess, does not exert an influence to the overall dimension of OLED panel.

Drawings

FIG. 1 is a schematic structural diagram of the OLED module of the present invention

FIG. 2 is an electrode drawing of an OLED panel in embodiment 1 of the present invention

FIG. 3 is a schematic diagram of a module in embodiment 1 of the present invention

Wherein: 10-OLED panel, 20-FPC, 30-chip, 11-groove, 12-first cutting groove, 13-second cutting groove, 14-third cutting groove, 15-fourth cutting groove, 101-first anode lead-out region, 102-second anode lead-out region, 103-third anode lead-out region, 104-fourth anode lead-out region, 105-first cathode lead-out region, 106-second cathode lead-out region, 21-first circuit board, 22-second circuit board, 23-third circuit board, 24-fourth circuit board, 201-first positive electrode pad, 202-first negative electrode pad, 203-second positive electrode pad, 204-second negative electrode pad, 31-pin A, 32-pin B, 33-pin C.

Detailed Description

In order to enhance the understanding of the present invention, the following detailed description of the present invention will be made with reference to the accompanying drawings and examples, which are only used for explaining the present invention and do not limit the scope of the present invention.

As shown in fig. 1-3, the utility model relates to an OLED module, include by current drive's OLED panel 10, flexible line way board 20, chip 30 and connect the electronic component on flexible line way board 20, be provided with recess 11 at the limit portion of OLED panel 10, it has flexible line way board 20 to cover on recess 11, is provided with corresponding pad on flexible line way board 20, and chip 30 welded connection is on the pad, and the electric current flows into OLED panel 10 through chip 30. The substrate and the rear cover of the OLED panel 10 are made of glass, the grooves 11 are formed by one or more cutting methods such as laser and diamond, the grooves are arranged around the OLED panel 10, the number of the grooves is at least one, or four, patterns are etched on the conductive film material on the groove 11, the positive electrode and the negative electrode on the OLED panel can be led out through the patterns, the conductive film at least leads out a group of positive and negative electrodes on the OLED panel 10, the conductive film is made of ITO, MoAlMo or other wire film materials, three pins are arranged on the chip 30, namely a pin A31, a pin B32 and a pin C33, the pin A31 is welded and connected with a positive electrode input line and a positive electrode input line of a bonding pad, the pin B32 is welded and connected with a negative electrode of the bonding pad, the pin C33 is welded and connected with a negative electrode input line of the bonding pad, the width of the chip 30 is smaller than that of the groove 11, and the height of the chip 30 is smaller than the depth of the groove 11. The heat radiating fins are arranged on the chip, the input voltage range of the chip is selectable, the output current is constant, and the chip with the corresponding parameters is selected according to the input current required by the OLED panel. The utility model provides a chip 30 can regard as a simple constant current device, under the voltage input condition in the certain limit, the electric current of exporting the OLED panel through chip 30 is fixed to ensure that the luminance of OLED lamps and lanterns is unanimous.

The utility model discloses an among the OLED lamps and lanterns, the utility model discloses a several OLED module can be connected through parallelly connected or the mode of series-parallel combination, and during parallel connection, can establish ties a fuse on every OLED module usually, prevents when monolithic OLED module short circuit, leads to whole lamps and lanterns to lose.

Example 1

The OLED panel is square, four grooves are arranged on four sides of the OLED panel, the four grooves are respectively a first groove 12, a second groove 13, a third groove 14 and a fourth groove 15, ITO electrode patterns for leading out electrodes of OLED devices are arranged in the four grooves, the first groove 12 and the third groove 14 are of a symmetrical structure, the second groove 13 and the fourth groove 15 are of a symmetrical structure, a first anode region 101 is arranged on the first groove 12, a third anode region 103 is arranged on the third groove 14, a second anode region 102 and a first cathode region 105 are arranged in the second groove 13, a fourth anode region 104 and a second cathode region 106 are arranged in the fourth groove 15, flexible circuit boards are called FPC for short, in the embodiment, the number of the flexible circuit boards 20 is four, the first circuit board 21, the second circuit board 22, the third circuit board 23 and the fourth circuit board 24 are respectively connected with the first groove 12, the second groove 13, the third groove 14 and the fourth groove 15, The second groove 13, the third groove 14 and the fourth groove 15 correspond to each other, and the second circuit board 22 is provided with a first positive electrode pad 201 connected to the second anode region 102 and a first negative electrode pad 202 connected to the first cathode region 105; the fourth circuit board 24 is provided with a second positive electrode pad 203 connected with the fourth anode region 104 and a second negative electrode pad 204 connected with the second cathode region 106, the upper edges of the first circuit board 21 and the third circuit board 23 are connected with the first positive electrode pad 201 of the second circuit board 22 through a routing wire, the lower edges of the first circuit board 21 and the third circuit board 23 are connected with the second positive electrode pad 203 of the fourth circuit board 24 through a routing wire, the second circuit board 22 and the fourth circuit board 24 are equivalent and can simultaneously lead out the positive electrode and the negative electrode of the OLED device, and the chips can be selectively arranged on the second circuit board 22 or the fourth circuit board 24.

In the embodiment, the chip 30 is arranged on the fourth circuit board 24, the model of the chip is ADA GHHG1, the rated input voltage is 9-16V, and the output current is 260 mA. The pin A31 of the chip 30 is connected to the second positive electrode bonding pad 203, the pin B32 is welded to the second negative electrode bonding pad 204, the pin A31 is further connected with a positive electrode input line, the pin C33 is connected with a negative electrode input line, after the OLED module is connected to a circuit, the current input is connected with the pin A of the chip, the current output is connected with the pin C33 of the chip 30, when the voltage of the OLED module is controlled to be 9-16V, the current flowing into the OLED panel after the chip processing is stable at 250mA, the light emitting is uniform, and the brightness is consistent.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An OLED module, includes OLED panel (10), flexible line way board (20), chip (30) and connects the electronic component on flexible line way board (20), its characterized in that: the edge of the OLED panel (10) is provided with a groove (11), the groove (11) is covered with a flexible circuit board (20), the flexible circuit board (20) is provided with a corresponding bonding pad, a chip (30) is connected to the bonding pad in a welded mode, and current flows into the OLED panel (10) through the chip (30).

2. The OLED module as set forth in claim 1, wherein: the number of the grooves (11) is 1-4, and the number of the flexible circuit boards (20) corresponds to the number of the grooves (11).

3. The OLED module as set forth in claim 2, wherein: and a conductive film with a pattern is arranged on the groove (11), and the conductive film at least leads out a group of positive and negative electrodes on the OLED panel (10).

4. The OLED module as set forth in claim 3, wherein: the flexible circuit boards (20) are bound on the conductive film on the groove (11) through ACF or ACP, wherein at least one flexible circuit board (20) is provided with a positive electrode pad and a negative electrode pad which lead out the positive electrode and the negative electrode on the OLED panel (10), and the distance between the positive electrode pad and the negative electrode pad is close to or equal to the length of the chip (30).

5. The OLED module as set forth in claim 4, wherein: a heat sink is provided on the chip (30).

6. The OLED module as set forth in claim 5, wherein: the chip (30) is provided with three pins, namely a pin A (31), a pin B (32) and a pin C (33), wherein the pin A (31) is welded and connected with a positive electrode input line of a bonding pad, the pin B (32) is welded and connected with a negative electrode of the bonding pad, and the pin C (33) is welded and connected with a negative electrode input line of the bonding pad.

7. The OLED module as set forth in claim 1, wherein: the width of the chip (30) is smaller than the width of the groove (11), and the height of the chip (30) is lower than the depth of the groove (11).

8. An OLED module lamp with reduced failure comprising the OLED module of any one of claims 1-7, wherein: the OLED module comprises a plurality of OLED modules, wherein the plurality of OLED modules are connected in a parallel or series-parallel combination mode, and a fuse wire is connected in series on each OLED module during parallel connection.