Electronic control circuit of display module and display device

Abstract

The utility model discloses an electric control circuit of a display module and a display device. The electric control circuit comprises a driving circuit board, a first FPC and a second FPC. The driving circuit board comprises a first group of interfaces and a second group of interfaces; the driving circuit board is electrically connected with the first FPC through the first group of interfaces, and the second group of interfaces is electrically connected with the second FPC and is connected with the main control circuit board. The first group of interfaces and the second group of interfaces are arranged on the driving circuit board, and the driving circuit board is connected with the main control circuit board through the corresponding FPCs, so that when abnormal display occurs in an extreme test or signal transmission or power supply cannot be performed, the FPC is switched to the other FPC, and the reliability of test and display is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of FPC connection of display panel, especially relates to a display module's electric control circuit and display device. BACKGROUND

[0002] The prior art display device mostly adopts FPC connection, and the FPC can be bent and folded and can be flexibly wired according to the internal layout of the display module to realize complex circuit connection in a small space, for example, in small electronic equipment such as mobile phones and tablet computers, which can effectively save space and make the equipment thinner.

[0003] The display device will be subjected to high-low temperature reliability and humidity reliability tests before being formally shipped to test the display effect of the display device in extreme environments and provide relevant technical parameters and guidance for subsequent product design and research and development.

[0004] However, as Figure 1 and Figure 2 , the existing display device has increased FPC binding resistance during extreme product testing, which causes abnormal display of the product, or the binding resistance is too large to cause the display device to fail, especially when used in low-temperature polysilicon products, the display screen cannot be correctly connected, and external signals cannot be transmitted to the display screen. UTILITY MODEL CONTENTS

[0005] The existing display device adopts FPC connection with the main control board, and during extreme testing, the binding resistance is prone to be too large, and abnormal display occurs, which causes the related test data to be unable to be accurately collected.

[0006] To solve the above problems, a display module electric control circuit and display device are provided, which are connected with the main control circuit board through the first group of interfaces and the second group of interfaces provided on the driving circuit board, and when abnormal display occurs during extreme testing or signal transmission or power supply cannot be performed, the FPC is switched to another FPC, thereby improving the reliability of testing and display.

[0007] In a first aspect, a display module electric control circuit includes:

[0008] a driving circuit board;

[0009] a first FPC and a second FPC;

[0010] the driving circuit board includes:

[0011] a first group of interfaces and a second group of interfaces;

[0012] The driving circuit board is electrically connected with the first FPC through the first group of interfaces, and electrically connected with the second FPC through the second group of interfaces.

[0013] The main control circuit board is connected with the display module.

[0014] In a first possible implementation of the electric control circuit of the display module, the signal pin structures of the first group of interfaces and the second group of interfaces are the same, and the first group of interfaces and the second group of interfaces are both arranged on the array substrate of the display module.

[0015] In a second possible implementation of the electric control circuit of the display module, the signal pins of the second group of interfaces are power pins, and the first group of interfaces and the second group of interfaces are both arranged on the array substrate of the display module.

[0016] In a third possible implementation of the electric control circuit of the display module, the signal pin structures of the first group of interfaces and the second group of interfaces are the same, the first group of interfaces is arranged on the array substrate of the display module, and the second group of interfaces is arranged on the color film substrate of the display module through conductive silica gel extension.

[0017] In a fourth possible implementation of the electric control circuit of the display module, the signal pins of the second group of interfaces are power pins, the first group of interfaces is arranged on the array substrate of the display module, and the second group of interfaces is arranged on the color film substrate of the display module through conductive silica gel extension.

[0018] In a second aspect, a display device includes the electric control circuit of the display module of the first aspect, and further includes:

[0019] The main control circuit board is connected with the display module.

[0020] The main control circuit board is electrically connected with the driving circuit board through the first FPC and the second FPC.

[0021] In a first possible implementation of the display device of the second aspect of the utility model, the main control circuit board includes:

[0022] The main control chip includes a detection pin and a switching pin.

[0023] The main control chip includes a detection pin and a switching pin.

[0024] The detection pin is used to detect whether the feedback signal of the driving circuit board is abnormal.

[0025] The switching pin is used to switch the first FPC and the second FPC when it is detected that the feedback signal of the driving circuit board is abnormal.

[0026] The electric control circuit and display device of the display module have the first group of interfaces and the second group of interfaces arranged on the driving circuit board, and the corresponding FPCs are connected with the main control circuit board, so that when abnormal display occurs during extreme test or signal transmission or power supply cannot be performed, the FPCs are switched to another FPC, and the reliability of test and display is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0028] Figure 1 is a FPC connection plane schematic diagram of the display module in the prior art;

[0029] Figure 2 is a FPC connection cross-sectional schematic diagram of the display module in the prior art;

[0030] Figure 3 is an interface and FPC connection schematic diagram of the display module in embodiment 1 in the present application;

[0031] Figure 4 is an interface and FPC connection schematic diagram of the display module in embodiment 2 in the present application;

[0032] Figure 5 is a FPC connection cross-sectional schematic diagram in embodiment 3 in the present application

[0033] Figure 6 is a FPC connection schematic diagram in embodiment 5 in the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the present application will be described clearly and completely in combination with the drawings in the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, other embodiments obtained by those skilled in the art without creative effort fall within the scope of protection of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "and / or" includes a set of one or more associated listed items.

[0036] It is to be understood that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or indirectly on or connected to the other element by way of one or more other elements.

[0037] It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like as used herein are intended to refer to the orientation or position of the device or element as shown in the drawings and are used for convenience in describing the present application and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed or interpreted as limiting the application.

[0038] In addition, the terms "first", "second", "third", etc. are used herein only for descriptive purposes and are not to be construed or interpreted as indicating or implying relative importance or significance of the elements or features to which they are used to describe. Thus, features with "first", "second", "third" designations can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise expressly and specifically limited.

[0039] The existing display device adopts FPC to connect with the main control board. When extreme test is performed, the problem of too large binding resistance and display abnormality is prone to occur, so that relevant test data cannot be accurately collected.

[0040] In view of the above problems, an electric control circuit of a display module and a display device are provided.

[0041] Embodiment 1

[0042] In a first aspect, an electric control circuit of a display module includes a driving circuit board PCB1, a first FPC (FPC1), and a second FPC (FPC2). The driving circuit board PCB1 includes a first set of interfaces and a second set of interfaces. The driving circuit board PCB1 is connected to a master control circuit board PCB2 through the first set of interfaces and the second set of interfaces. The first set of interfaces is electrically connected to the first FPC (FPC1), and the second set of interfaces is electrically connected to the second FPC (FPC2). By arranging the first set of interfaces and the second set of interfaces on the driving circuit board PCB1 and connecting the corresponding FPCs to the master control circuit board PCB2, when abnormal display occurs during extreme testing, or signal transmission or power supply cannot be performed, the FPCs are switched to another FPC, thereby improving the reliability of testing and display.

[0043] As Figure 3 , Figure 3 is a schematic diagram of the connection between the interfaces of the display module and the FPCs in Embodiment 1 of the present application. The signal pins of the first set of interfaces and the second set of interfaces are the same, and the first set of interfaces and the second set of interfaces are both arranged on the array substrate Array of the display module.

[0044] In this embodiment, the signal pins of the first set of interfaces and the second set of interfaces are the same, and both include a clock pin CLK, a reset pin RST, a data transmission pin TXD, a data reception pin RXD, an enable pin EN, power pins VDD and VCC, a ground pin GND, and the like.

[0045] The second set of interfaces is equivalent to a backup interface of the first set of interfaces, and the second FPC (FPC2) is a backup FPC.

[0046] Embodiment 2

[0047] As Figure 4 , Figure 4 is a schematic diagram of the connection between the interfaces of the display module and the FPCs in Embodiment 2 of the present application. The signal pins of the second set of interfaces are power pins, and the first set of interfaces and the second set of interfaces are both arranged on the array substrate Array of the display module.

[0048] In this embodiment, the signal pins of the first set of interfaces and the second set of interfaces are not the same. The first set of interfaces includes a clock pin CLK, a reset pin RST, a data transmission pin TXD, a data reception pin RXD, an enable pin EN, power pins VDD and VCC, a ground pin GND, and the like. The signal pins of the second set of interfaces only include power pins VDD and VCC, a ground pin GND, and the like.

[0049] The second set of interfaces is equivalent to a backup for the power pins, and the second FPC (FPC2) is a power backup FPC.

[0050] Embodiment 3

[0051] As Figure 5 , Figure 5 is the FPC connection cross-sectional view in embodiment 3 in the present application. The signal pin structures of the first group of interfaces and the second group of interfaces are the same, and the first group of interfaces are arranged on the array substrate Array of the display module, and the second group of interfaces are arranged on the color film substrate CF of the display module through conductive silicone.

[0052] Embodiment 3 has the same pin structure as embodiment 1, except that the second group of interfaces are arranged on the color film substrate CF of the display module through conductive silicone.

[0053] Embodiment 4

[0054] In the fourth possible implementation of the electric control circuit of the display module of the present application, the signal pins of the second group of interfaces are power pins, and the first group of interfaces are arranged on the array substrate Array of the display module, and the second group of interfaces are arranged on the color film substrate CF of the display module through conductive silicone.

[0055] Embodiment 4 has the same pin structure as embodiment 2, except that the second group of interfaces are arranged on the color film substrate CF of the display module through conductive silicone.

[0056] Embodiment 5

[0057] In the second aspect, an display device comprises the electric control circuit of the display module of the first aspect, wherein it further comprises a master control circuit board PCB2; the master control circuit board PCB2 is electrically connected with the drive circuit board PCB1 through a first FPC (FPC1) and a second FPC (FPC2).

[0058] Further, as Figure 6 , Figure 6 is the FPC connection schematic diagram in embodiment 5 in the present application, the master control circuit board PCB2 comprises a master control chip IC; the master control chip IC comprises a detection pin FB and a switching pin SWITCH; the detection pin FB is used for detecting whether the feedback signal of the drive circuit board PCB1 is abnormal; the switching pin SWITCH is used for switching the first FPC (FPC1) and the second FPC (FPC2) when it is detected that the feedback signal of the drive circuit board PCB1 is abnormal.

[0059] The electric control circuit of the display module and the display device of the present application are implemented, by arranging the first group of interfaces and the second group of interfaces on the drive circuit board, and connecting them with the master control circuit board through corresponding FPCs, when abnormal display occurs during extreme test, or signal transmission or power supply cannot be performed, the FPCs are switched to another FPC, thereby improving the reliability of test and display.

[0060] The above merely is the preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic control circuit for a display module, characterized in that, include: Driver circuit board; First FPC and second FPC; The driving circuit board includes: The first set of interfaces and the second set of interfaces; The drive circuit board is electrically connected to the first FPC through the first set of interfaces, and to the main control circuit board through the second set of interfaces and the second FPC.

2. The electronic control circuit of the display module according to claim 1, characterized in that, The first set of interfaces and the second set of interfaces have the same signal pin structure, and both the first set of interfaces and the second set of interfaces are laid out on the array substrate of the display module.

3. The electronic control circuit of the display module according to claim 1, characterized in that, The signal pins of the second set of interfaces are power supply pins, and both the first set of interfaces and the second set of interfaces are located on the array substrate of the display module.

4. The electronic control circuit of the display module according to claim 1, characterized in that, The first set of interfaces and the second set of interfaces have the same signal pin structure. The first set of interfaces is arranged on the array substrate of the display module, and the second set of interfaces is arranged on the color filter substrate of the display module through conductive silicone.

5. The electronic control circuit of the display module according to claim 1, characterized in that, The signal pins of the second set of interfaces are power supply pins, and the first set of interfaces is located on the array substrate of the display module. The second set of interfaces is located on the color filter substrate of the display module through conductive silicone.

6. A display device comprising the electronic control circuit of the display module according to any one of claims 1-5, characterized in that, Also includes: Main control circuit board; The main control circuit board is electrically connected to the drive circuit board through the first FPC and the second FPC.

7. The display device according to claim 6, characterized in that, The main control circuit board includes: Main control chip; The main control chip includes detection pins and switching pins; The detection pin is used to detect whether the feedback signal of the driver circuit board is abnormal; The switching pin is used to switch between the first FPC and the second FPC when an abnormal feedback signal from the driver circuit board is detected.

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