Display module of integrated power supply protection module

Abstract

The utility model relates to a display module integrated with a power supply protection module. The display module structurally comprises a display screen and a display screen FPC (Flexible Printed Circuit) connected with the display screen, a display driving control module is arranged on the display screen; the display screen FPC is provided with a BTB connector and a communication signal interface module, and the BTB connector is connected with the display driving control module through the communication signal interface module; the display screen FPC is further provided with an over-current protection module, the over-current protection module adopts an SGM2531 chip, the enabling end of the over-current protection module is connected with the BTB connector and communicates with a main control chip on a system mainboard, and the BTB connector is connected with the display driving control module through the over-current protection module. According to the utility model, the working current on the display module can be monitored in real time, the module can be effectively prevented from being damaged by short-circuit heavy current, and the product reliability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, in particular to a display module integrated with a power protection module. Background Art

[0002] Wearable devices such as bracelets / watches and other products are becoming more and more popular. The functions integrated in such products are also increasing. Many users have higher and higher requirements for brightness. Some brand watches can support a brightness of 3000nits in the high-brightness mode. Therefore, the current when the watch works in the high-brightness mode is relatively large. When there is a short-circuit defect on the watch, such as the system power pin of the system main board is short-circuited, or the BTB connector and the main board connector on the display module are inserted reversely, etc., it will cause a large current. If it cannot be recognized in a short time, the module will usually be burned out. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a display module integrated with a power protection module, aiming to monitor the working current on the display module in real time, avoid damage to the module caused by short-circuit large current, and improve the reliability of the product.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A display module integrated with a power protection module, characterized in that the structure of the display module is:

[0006] It includes a display screen and a display screen FPC connected to the display screen;

[0007] A display drive control module is provided on the display screen;

[0008] A BTB connector and a communication signal interface module are provided on the display screen FPC, and the BTB connector is connected to the display drive control module through the communication signal interface module;

[0009] An overcurrent protection module is further provided on the display screen FPC. The overcurrent protection module uses an SGM2531 chip, and its enable end is connected to the BTB connector, communicates with the main control chip on the system main board, and the BTB connector is connected to the display drive control module through the overcurrent protection module.

[0010] The further technical solution is:

[0011] The current limit threshold of the overcurrent protection module is set by an external resistor provided outside the SGM2531 chip.

[0012] The current limit threshold is 0.1A to 3A.

[0013] The SGM2531 chip uses a TDFN package.

[0014] The SGM2531 chip has a length of 3 mm, a width of 2 mm, and a thickness of 0.75 mm.

[0015] A high-temperature resistant insulating layer is provided on the SGM2531 chip.

[0016] The high-temperature resistant insulating layer is attached to the SGM2531 chip and has a thickness of 0.05 mm.

[0017] The display screen includes a glass substrate, a polarizer provided on the glass substrate, and a viewing area formed in the middle of the polarizer; the display driving and control module is provided below the viewing area of the glass substrate.

[0018] A binding position is provided on the display screen FPC, and the binding position is connected to the glass substrate through a conductive adhesive.

[0019] A reinforcing plate is provided on the back of the area where the overcurrent protection module is arranged on the display screen FPC.

[0020] The beneficial effects of the present utility model are as follows:

[0021] By integrating an overcurrent protection circuit module on the display screen FPC, the present utility model avoids the burn-in of the display module caused by the short circuit of the power signal, and improves the reliability of the product.

[0022] Other features and advantages of the present utility model will be described in the subsequent description, and will be partially obvious from the description, or will be understood by implementing the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front view of the tiled structure of the embodiment of the present utility model.

[0024] Figure 2 It is the schematic diagram of the control connection structure of the embodiment of the present utility model.

[0025] In the figure: 1. Glass substrate; 2. Polarizer; 3. Viewing area; 4. Display driving and control module; 5. Display screen FPC; 6. BTB connector; 7. High-temperature resistant insulating layer; 8. Overcurrent protection module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following describes the specific embodiments of the present utility model with reference to the drawings.

[0027] See Figures 1 to 2 , a display module integrating a power protection module according to this embodiment, and the structure of the display module is:

[0028] It includes a display screen and a display screen FPC (flexible circuit board) 5 connected to the display screen;

[0029] A display driving control module 4 is provided on the display screen;

[0030] A BTB connector 6 and a communication signal interface module are provided on the display screen FPC 5, and the BTB connector 6 is connected to the display driving control module 4 (display driving IC) through the communication signal interface module;

[0031] An overcurrent protection module 8 is further provided on the display screen FPC 5. The overcurrent protection module 8 uses an SGM2531 chip, and its enable terminal is connected to the BTB connector 6, communicates with the main control chip on the system motherboard, and the BTB connector 6 is connected to the display driving control module 4 through the overcurrent protection module 8.

[0032] The current limit threshold of the overcurrent protection module 8 is set through an external resistor provided outside the SGM2531 chip (see the black square around the overcurrent protection module 8 in Figure 1 ).

[0033] As a specific implementation manner, the current limit threshold is 0.1A to 3A.

[0034] Specifically, a main control unit module and a system power supply (Vbat) module are provided on the system motherboard, and the BTB connector 6 is connected to the main control unit module and the system power supply (Vbat) module.

[0035] Specifically, the display screen includes a glass substrate 1, a polarizer 2 is provided on the glass substrate 1, and a viewing area 3 is formed in the middle of the polarizer 2; the display driving control module 4 is provided below the viewing area 3 of the glass substrate 1.

[0036] Specifically, the SGM2531 chip adopts a TDFN (Thin Dual Flat Package) packaging form, the length of the SGM2531 chip is 3mm, the width is 2mm, and the thickness is 0.75mm.

[0037] Specifically, a high-temperature resistant insulating layer 7 is provided on the SGM2531 chip, and it can specifically adopt a high-temperature resistant yellow insulating protection paper attached to the SGM2531 chip, and the thickness of the high-temperature resistant insulating layer 7 is 0.05mm.

[0038] Such as Figure 2As shown in the figure, an overcurrent protection circuit module is integrated on the FPC of this embodiment. When the output load exceeds the current limit threshold or a short - circuit event occurs, for example, when the BTB connector and the main - board connector on the display module are inserted reversely, or when a large current is caused by a short - circuit of the power - supply Vbat pin of the system - power (Vbat) module, the overcurrent protection module will be triggered and started. The on - resistance of the power switch in the chip can limit the output current to a safe level. If continuous severe overload and short - circuit occur, it will increase the power consumption of the switch, resulting in an increase in the junction temperature. At this time, the overcurrent protection module will disconnect the switch to prevent damage and improve the reliability of the whole watch.

[0039] Specifically, a reinforcing plate is provided on the back of the area where the overcurrent protection module 8 is arranged on the display - screen FPC 5 to improve the structural stability and prevent the chip from being damaged.

[0040] Those of ordinary skill in the art can understand that the above - described are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A display module with an integrated power protection module, characterized in that: The structure of the display module is as follows: It includes a display screen and a display screen FPC connected to the display screen; The display screen is provided with a display drive control module; The display screen FPC is provided with a BTB connector and a communication signal interface module, and the BTB connector is connected to the display drive control module through the communication signal interface module; An overcurrent protection module is also provided on the display screen FPC. The overcurrent protection module adopts an SGM2531 chip, whose enable end is connected to the BTB connector and communicates with the main control chip on the system motherboard. The BTB connector is connected to the display drive control module through the overcurrent protection module.

2. The display module with integrated power protection module according to claim 1, characterized in that: The current limit threshold of the overcurrent protection module is set by an external resistor arranged outside the SGM2531 chip.

3. The display module with integrated power protection module according to claim 2, characterized in that: The current limiting threshold is 0.1A-3A.

4. The display module with integrated power protection module according to claim 1, characterized in that: The SGM2531 chip is packaged in TDFN.

5. The display module with integrated power protection module according to claim 1, characterized in that: The SGM2531 chip has a length of 3 mm, a width of 2 mm, and a thickness of 0.75 mm.

6. The display module with integrated power protection module according to claim 1, characterized in that: The SGM2531 chip is provided with a high temperature resistant insulating layer.

7. The display module with integrated power protection module according to claim 6, characterized in that: The high temperature resistant insulation layer is attached to the SGM2531 chip with a thickness of 0.05mm.

8. The display module with integrated power protection module according to claim 1, characterized in that: The display screen comprises a glass substrate, a polarizer is arranged on the glass substrate, and a viewing area is formed in the middle of the polarizer; the display driving control module is arranged on the glass substrate below the viewing area.

9. The display module with integrated power protection module according to claim 1, characterized in that: The display screen FPC is provided with a binding position, and the binding position is connected to the glass substrate through a conductive adhesive.

10. The display module with integrated power protection module according to claim 1, characterized in that: A reinforcing plate is provided on the back side of the area where the overcurrent protection module is provided on the display screen FPC.

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