Display module and display screen

Through the interface connection between the timing controller and the backlight driver, the brightness calibration current value of the display sub-panel is adjusted in real time, which solves the problem of uneven brightness adjustment of the display module and achieves brightness uniformity and error reduction.

CN119649768BActive Publication Date: 2025-09-30HEFEI BOE OPTOELECTRONIC TECH CO LTD +1
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Patent Information

Application Number
CN202510007369.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-02
Publication Date
2025-09-30
Estimated Expiration
2045-01-02

AI Technical Summary

Technical Problem

The existing display modules cannot cover all display screens due to the variable transmittance module brightness adjustment method, resulting in excessive transmittance differences and unable to meet customer brightness requirements.

Method used

Through the integrated circuit bus interface or universal input and output interface connection between the timing controller and the backlight driver, the brightness calibration current value of the display sub-panel is adjusted in real time, the target brightness calibration current value is determined according to the display mode switching instruction, and the brightness calibration is achieved by rewriting the address bit.

Benefits of technology

It realizes flexible adjustment of display module brightness and reduction of brightness error, meeting customers' unified requirements for brightness.

✦ Generated by Eureka AI based on patent content.

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Abstract

An embodiment of the present application provides a display module and display screen. After a front-end system obtains a display mode switching instruction, it sends the display mode switching instruction to a timing controller. Based on the display mode switching instruction, the timing controller determines that the brightness calibration current value written to the address bit corresponding to each display sub-panel in the backlight driver is a target brightness calibration current value. The target brightness calibration current value is the brightness calibration current value corresponding to each display sub-panel in the target display mode. The backlight driver then adjusts the display brightness of each display sub-panel based on the target brightness calibration current value of each display sub-panel. Adjusting the brightness of the display sub-panel based on the brightness calibration current value is not only flexible, but also reduces brightness errors based on brightness standards, greatly meeting customer requirements.
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Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display screen. Background Art

[0002] With the development of display module technology, display modules have more and more functions in the entire device. Currently, a new anti-peeping module is produced by adding a special cell (liquid crystal) layer inside the panel, and an adjustable cell layer is added. In this way, the module transmittance varies greatly due to the turning on and off of functions, resulting in a very different overall panel transmittance.

[0003] Currently, the brightness adjustment method for variable transmittance modules is that the backlight driver needs to adjust the on / off time of the display module based on the duty cycle of the PWM (Pulse Width Modulation) signal queried by the timing controller. However, due to the large difference in transmittance between screens, the PWM duty cycle queried by the timing controller cannot cover all display modules, and the brightness value cannot meet customer requirements. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a display module and a display screen, and the specific technical solutions are as follows:

[0005] In a first aspect, an embodiment of the present application provides a display module, comprising:

[0006] Front-end system, timing controller, backlight driver, display panel, the display panel is composed of multiple display sub-panels;

[0007] The front-end system obtains a display mode switching instruction and sends the display mode switching instruction to the timing controller; the display mode switching instruction includes a target display mode;

[0008] The timing controller determines, based on the display mode switching instruction, that the brightness calibration current value written into the address bit corresponding to each display sub-panel in the backlight driver is a target brightness calibration current value, wherein the target brightness calibration current value is the brightness calibration current value corresponding to each display sub-panel in the target display mode;

[0009] The backlight driver adjusts the display brightness of each of the display sub-panels based on a target brightness calibration current value of each of the display sub-panels.

[0010] In a possible implementation manner, the timing controller stores brightness calibration current values ​​corresponding to the display sub-panels in different display modes;

[0011] The timing controller is specifically used for:

[0012] Based on the display mode switching instruction, a brightness calibration current value corresponding to each display sub-panel in the target display mode is obtained from the brightness calibration current values ​​corresponding to each display sub-panel in different display modes stored in the timing controller.

[0013] In a possible implementation, the timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface;

[0014] The timing controller is specifically used for:

[0015] The brightness calibration current value stored in the address bit of each display sub-panel stored in the backlight driver is rewritten into the target brightness calibration current value.

[0016] In a possible implementation, the backlight driver is provided with a plurality of brightness calibration current value address bits;

[0017] The timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface;

[0018] The timing controller is specifically used for:

[0019] For each display sub-panel, based on the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on, and the brightness calibration current value of the target brightness calibration current value address bit is rewritten as the target brightness calibration current value.

[0020] In a possible implementation, the backlight driver is provided with a plurality of brightness calibration current value address bits;

[0021] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0022] The timing controller is specifically used for:

[0023] For each display sub-panel, based on the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on, and the brightness calibration current value of the target brightness calibration current value address bit is rewritten as the target brightness calibration current value.

[0024] In a possible implementation, the backlight driver sets a plurality of brightness calibration current value address bits for each display sub-panel; different brightness calibration current value address bits store brightness calibration current values ​​of the display sub-panel in different display modes;

[0025] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0026] The timing controller is specifically used for:

[0027] For each display sub-panel, according to the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on.

[0028] In a possible implementation manner, the timing controller is specifically configured to:

[0029] For each display sub-panel, the brightness calibration current value stored in each brightness calibration current value address bit is matched according to the target brightness calibration current value corresponding to the display sub-panel. When the target brightness calibration current value corresponding to the display sub-panel is successfully matched, the brightness calibration current value address bit is used as the target brightness calibration current value address bit.

[0030] In a possible implementation manner, the timing controller is specifically configured to:

[0031] For each display sub-panel, according to the target display mode corresponding to the display sub-panel, the display mode corresponding to the brightness calibration current value stored in each brightness calibration current value address bit is matched. When the target display mode corresponding to the display sub-panel is matched successfully, the brightness calibration current value address bit is used as the target brightness calibration current value address bit.

[0032] In a possible implementation, the display panel corresponds to two display modes, and the backlight driver sets two brightness calibration current value address bits for each display sub-panel; different brightness calibration current value address bits store brightness calibration current values ​​of the display sub-panel in different display modes;

[0033] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0034] The timing controller is specifically used for:

[0035] For each display sub-panel, according to the display mode switching instruction, the currently connected brightness calibration current value address bit is disconnected, and the currently unconnected brightness calibration current value address bit is connected.

[0036] In a possible implementation, the display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode;

[0037] The timing controller stores brightness calibration current values ​​corresponding to each display sub-panel group under different display modes;

[0038] The timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface;

[0039] The timing controller is specifically used for:

[0040] Based on the display mode switching instruction, acquiring a brightness calibration current value corresponding to each display sub-panel group in a target display mode from brightness calibration current values ​​corresponding to each display sub-panel group in different display modes stored in the timing controller;

[0041] rewriting the brightness calibration current value in the address bit corresponding to each display sub-panel group in the backlight driver into the target brightness calibration current value;

[0042] The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

[0043] In a possible implementation, the display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode;

[0044] The timing controller stores brightness calibration current values ​​corresponding to each display sub-panel group under different display modes;

[0045] The backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0046] The timing controller is specifically used for:

[0047] Based on the display mode switching instruction, acquiring a brightness calibration current value corresponding to each display sub-panel group in a target display mode from brightness calibration current values ​​corresponding to each display sub-panel group in different display modes stored in the timing controller;

[0048] For each display sub-panel group, according to the target brightness calibration current value corresponding to the display sub-panel group, determine the brightness calibration current value address bit corresponding to the display sub-panel group from the plurality of brightness calibration current value address bits, obtain the target brightness calibration current value address bit, turn on the target brightness calibration current value address bit, and rewrite the brightness calibration current value of the target brightness calibration current value address bit to the target brightness calibration current value;

[0049] The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

[0050] In a possible implementation, the display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode;

[0051] The backlight driver sets a plurality of brightness calibration current value address bits for each display sub-panel group; different brightness calibration current value address bits store brightness calibration current values ​​under different display modes of the display sub-panel group;

[0052] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0053] The timing controller is specifically used for:

[0054] For each display sub-panel group, according to the target brightness calibration current value corresponding to the display sub-panel group, determine the brightness calibration current value address bit corresponding to the display sub-panel group from the plurality of brightness calibration current value address bits, obtain the target brightness calibration current value address bit, and turn on the target brightness calibration current value address bit;

[0055] The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

[0056] In a second aspect, an embodiment of the present application provides a display screen, comprising any display module described in the first aspect.

[0057] Beneficial effects of the embodiments of the present application:

[0058] The embodiment of the present application provides a display module and display screen. After the front-end system obtains a display mode switching instruction, it sends the display mode switching instruction to a timing controller. Based on the display mode switching instruction, the timing controller determines that the brightness calibration current value written to the address bit corresponding to each display sub-panel in the backlight driver is the target brightness calibration current value. The target brightness calibration current value is the brightness calibration current value corresponding to each display sub-panel in the target display mode. Then, the backlight driver adjusts the display brightness of each display sub-panel based on the target brightness calibration current value of each display sub-panel. The display module sends a display mode switching instruction through the front-end system. The timing controller determines in real time based on the brightness calibration current value corresponding to the display mode that the brightness calibration current value written to the address bit corresponding to each display sub-panel in the backlight driver is the target brightness calibration current value. The brightness of the display sub-panel is adjusted based on the brightness calibration current value. Not only is the adjustment flexible, but the brightness error is reduced by adjustment based on the brightness standard, greatly meeting customer requirements.

[0059] Of course, it is not necessary to achieve all the advantages described above at the same time when implementing any product or method of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0061] Figure 1 A first schematic diagram of a display module provided in an embodiment of the present application;

[0062] Figure 2 A second schematic diagram of a display module provided in an embodiment of the present application;

[0063] Figure 3 This is a third schematic diagram of the display module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of this application.

[0065] like Figure 1 As shown, the present application provides a display module, comprising:

[0066] Front-end system 110, timing controller 120, backlight driver 130, display panel 140;

[0067] The front-end system 110 obtains a display mode switching instruction and sends the display mode switching instruction to the timing controller 120; the display mode switching instruction includes a target display mode;

[0068] The timing controller 120 determines, based on the display mode switching instruction, that the brightness calibration current value written into the address bit corresponding to each display sub-panel in the backlight driver 130 is a target brightness calibration current value, wherein the target brightness calibration current value is the brightness calibration current value corresponding to each display sub-panel in the target display mode;

[0069] The backlight driver 130 adjusts the display brightness of the display panel 140 based on the target brightness calibration current value.

[0070] The display panel of the display module can correspond to different display modes when displaying. The target display mode of the display mode switching instruction is the display mode that the display panel needs to display. The display mode switching instruction can be determined based on the user switching operation, or it can be determined by the display module based on the change of ambient light. For example, the display module can be provided with a user operation button, and the user selects the corresponding mode by operating the user operation button, and the display mode switching instruction is generated in response to the user operation. For another example, the display module includes a light-sensing unit, and the light-sensing unit can trigger the corresponding display mode based on the change of ambient light. For example, the light-sensing unit can detect the light intensity of the ambient light, and determine the display mode of the display module based on the light intensity. For example, in a dark environment, the display mode corresponding to the display module is display mode 1, and in a bright environment, the display mode corresponding to the display module is display mode 2. The judgment criteria for dark environment and bright environment are determined based on the light intensity of the ambient light, which is not limited here.

[0071] The front-end system 110 and the timing controller 120 can be connected via IIC (Inter-Integrated Circuit), AUX (Auxiliary), and GPIO (General-purpose input / output). After the front-end system obtains the display mode switching instruction, it sends the display mode switching instruction to TCON (timing controller 120).

[0072] After receiving the display mode switching instruction, the TCON can determine that the brightness calibration current value written into the address bit corresponding to each display sub-panel in the backlight driver 130 is the target brightness calibration current value. Exemplarily, the TCON internally stores the brightness calibration current value corresponding to each display sub-panel in different display modes. For example, the TCON internally stores a brightness calibration current value table, which records the brightness calibration current value corresponding to each display sub-panel in different display modes. After receiving the display mode switching instruction, the TCON can query the brightness calibration current value table. For example, after receiving the display mode switching instruction, the TCON determines the display mode to be displayed, and then queries the brightness calibration current value table to find the brightness calibration current value corresponding to each display sub-panel in the display mode to be displayed.

[0073] Another example, the brightness calibration current value is stored in the backlight driver. Different address bits of the backlight driver store the brightness calibration current values ​​corresponding to different display modes. After receiving the display mode switching instruction, TCON can determine the address bit of the display mode corresponding to each display sub-panel based on the display mode corresponding to the display mode switching instruction, and then can turn on the address bit.

[0074] The backlight driver adjusts the display brightness of each display sub-panel based on the target brightness calibration current value of each display sub-panel. According to different display modes, the brightness calibration current value of each display sub-panel in the current display mode is determined, and the display brightness of the display panel is calibrated directly based on the brightness calibration current value, so that each display sub-panel of the display panel displays the display brightness, thereby achieving uniform display of the display panel.

[0075] In a possible implementation manner, the timing controller stores brightness calibration current values ​​corresponding to the display sub-panels in different display modes;

[0076] The timing controller is specifically used for:

[0077] Based on the display mode switching instruction, a brightness calibration current value corresponding to each display sub-panel in the target display mode is obtained from the brightness calibration current values ​​corresponding to each display sub-panel in different display modes stored in the timing controller.

[0078] The display sub-panel has different brightness calibration current values ​​in different display modes. The brightness calibration current values ​​corresponding to each display sub-panel in different display modes are determined based on experiments. For example, each display sub-panel can be tested in advance to test the brightness calibration current values ​​corresponding to the display sub-panel in different display modes. After determining the brightness calibration current values ​​corresponding to the display sub-panel in different display modes, the brightness calibration current values ​​corresponding to the display sub-panel in different display modes are pre-stored in the timing controller.

[0079] In one example, a brightness calibration current value table is pre-stored in the timing controller, and the brightness calibration current value table is used to record the brightness calibration current values ​​corresponding to each display sub-panel in different display modes. The brightness calibration current value table records the identification information of each display sub-panel, the identification information of each display mode, and each brightness calibration current value. The brightness calibration current value table establishes a correspondence between the identification information of each display sub-panel, the identification information of each display mode and each brightness calibration current value. For example, after obtaining the display mode switching instruction, the timing controller queries the identification information of each display mode in the brightness calibration current value table based on the target display mode corresponding to the display mode switching instruction, matches the target display mode with the identification information of each display mode, and matches the brightness calibration current value of each display sub-panel under the target display mode to determine the brightness calibration current value corresponding to each display sub-panel under the target display mode.

[0080] The brightness calibration current values ​​corresponding to each display sub-panel in different display modes are pre-stored in the timing controller and can be easily switched and retrieved at any time.

[0081] like Figure 2 As shown, in a possible implementation, the timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface;

[0082] The timing controller is specifically used for:

[0083] The brightness calibration current value stored in the address bit of each display sub-panel stored in the backlight driver is rewritten into the target brightness calibration current value.

[0084] The timing controller and the backlight driver are connected via IIC. The timing controller includes a first integrated circuit bus (IIC) interface, and the backlight driver includes a second integrated circuit bus (IIC) interface. The first integrated circuit bus interface and the second integrated circuit bus interface are connected using an IIC bus to achieve the connection between the timing controller and the backlight driver via IIC.

[0085] After determining the brightness calibration current value corresponding to each display sub-panel in the target display mode, the timing controller can directly rewrite the brightness calibration current value corresponding to each display sub-panel in the backlight driver through the IIC interface.

[0086] In this way, as long as the front-end system obtains the display mode switching instruction, the brightness calibration current value in the address bit of the backlight driver can be rewritten based on the display mode switching instruction to ensure the display brightness and meet the brightness display requirements.

[0087] In a possible implementation manner, each display sub-panel corresponds to a plurality of brightness calibration current value address bits in the backlight driver;

[0088] The timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface;

[0089] The timing controller is specifically used for:

[0090] For each display sub-panel, based on the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on, and the brightness calibration current value of the target brightness calibration current value address bit is rewritten as the target brightness calibration current value.

[0091] The timing controller and the backlight driver are connected via IIC. The timing controller includes a first integrated circuit bus (IIC) interface, and the backlight driver includes a second integrated circuit bus (IIC) interface. The first integrated circuit bus interface and the second integrated circuit bus interface are connected using an IIC bus to achieve the connection between the timing controller and the backlight driver via IIC.

[0092] The backlight driver can set multiple brightness calibration current value address bits, and the timing controller is connected to the backlight driver through IIC. For each display sub-panel, the timing controller can determine the brightness calibration current value address bit corresponding to the display sub-panel from multiple brightness calibration current value address bits according to the target brightness calibration current value corresponding to the display sub-panel, obtain the target brightness calibration current value address bit, and then turn on the target brightness calibration current value address bit, disconnect the other address bits corresponding to the display sub-panel, and rewrite the current value of the target brightness calibration current value address bit to the target brightness calibration current value.

[0093] For example, the timing controller can select any one of the unconnected brightness calibration current value address bits as the target brightness calibration current value address bit according to the target brightness calibration current value corresponding to the display sub-panel. In addition, the timing controller can also select any one from each brightness calibration current value address bit as the target brightness calibration current value address bit. The specific determination can be based on actual conditions and is not limited here.

[0094] For example, the backlight driver is provided with two brightness calibration current value address bits for each display sub-panel. When the display mode is switched, the timing controller uses the unconnected brightness calibration current value address bit corresponding to the current display sub-panel as the target brightness calibration current value address bit, and then rewrites the brightness calibration current value of the target brightness calibration current value address bit to the target brightness calibration current value, and turns on the target brightness calibration current value address bit.

[0095] As another example, the backlight driver is provided with three brightness calibration current value address bits for each display sub-panel, for example, address bit 1, address bit 2, and address bit 3. Taking display sub-panel 1 as an example, the currently connected address bit corresponding to display sub-panel 1 is address bit 1, and the current value written in address bit 1 is current value 1. The front-end system obtains the display mode switching instruction, and the timing controller determines, based on the display mode switching instruction, that the brightness calibration current value written in the address bit corresponding to display sub-panel 1 is current value 2. At this time, the timing controller can select the brightness calibration current value address bit corresponding to display sub-panel 1 from address bit 1, address bit 2, and address bit 3. For example, the currently connected address bit corresponding to display sub-panel 1 is address bit 1, then the timing controller arbitrarily selects one address bit from address bit 2 and address bit 3 that have not been connected as the target brightness calibration current value address bit; or, the currently connected address bit corresponding to display sub-panel 1 is address bit 1, and the timing controller arbitrarily selects one address bit from address bit 1, address bit 2, and address bit 3 as the target brightness calibration current value address bit.

[0096] After the target brightness calibration current value address bit is determined, the brightness calibration current value of the address bit can be rewritten through IIC.

[0097] like Figure 3 As shown, in a possible implementation manner, each display sub-panel corresponds to a plurality of brightness calibration current value address bits in the backlight driver;

[0098] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0099] The timing controller is specifically used for:

[0100] For each display sub-panel, based on the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on, and the brightness calibration current value of the target brightness calibration current value address bit is rewritten as the target brightness calibration current value.

[0101] The timing controller and the backlight driver are connected via GPIO. The timing controller includes a first general-purpose input / output (GPIO) interface, and the backlight driver includes a second general-purpose input / output (GPIO) interface. The first general-purpose input / output interface and the second general-purpose input / output interface are connected via GPIO to achieve the connection between the timing controller and the backlight driver via GPIO.

[0102] The backlight driver can be configured with multiple brightness calibration current value address bits. The timing controller is connected to the backlight driver via GPIO. For each display sub-panel, the timing controller can determine the brightness calibration current value address bit corresponding to the display sub-panel from the multiple brightness calibration current value address bits based on the target brightness calibration current value corresponding to the display sub-panel, and obtain the target brightness calibration current value address bit. The target brightness calibration current value address bit is then turned on, the other address bits corresponding to the display sub-panel are turned off, and the current value of the target brightness calibration current value address bit is rewritten to the target brightness calibration current value.

[0103] For example, the timing controller can select any one of the unconnected brightness calibration current value address bits as the target brightness calibration current value address bit according to the target brightness calibration current value corresponding to the display sub-panel. In addition, the timing controller can also select any one from each brightness calibration current value address bit as the target brightness calibration current value address bit. The specific determination can be based on actual conditions and is not limited here.

[0104] For example, the backlight driver is provided with two brightness calibration current value address bits for each display sub-panel. When the display mode is switched, the timing controller uses the unconnected brightness calibration current value address bit corresponding to the current display sub-panel as the target brightness calibration current value address bit, and then rewrites the brightness calibration current value of the target brightness calibration current value address bit to the target brightness calibration current value, and turns on the target brightness calibration current value address bit.

[0105] As another example, the backlight driver is provided with three brightness calibration current value address bits for each display sub-panel, for example, address bit 1, address bit 2, and address bit 3. Taking display sub-panel 1 as an example, the currently connected address bit corresponding to display sub-panel 1 is address bit 1, and the current value written in address bit 1 is current value 1. The front-end system obtains the display mode switching instruction, and the timing controller determines, based on the display mode switching instruction, that the brightness calibration current value written in the address bit corresponding to display sub-panel 1 is current value 2. At this time, the timing controller can select the brightness calibration current value address bit corresponding to display sub-panel 1 from address bit 1, address bit 2, and address bit 3. For example, the currently connected address bit corresponding to display sub-panel 1 is address bit 1, then the timing controller arbitrarily selects one address bit from address bit 2 and address bit 3 that have not been connected as the target brightness calibration current value address bit; or, the currently connected address bit corresponding to display sub-panel 1 is address bit 1, and the timing controller arbitrarily selects one address bit from address bit 1, address bit 2, and address bit 3 as the target brightness calibration current value address bit.

[0106] After the target brightness calibration current value address bit is determined, the brightness calibration current value of the address bit can be rewritten through GPIO.

[0107] In a possible implementation, the backlight driver sets a plurality of brightness calibration current value address bits for each display sub-panel; different brightness calibration current value address bits store brightness calibration current values ​​of the display sub-panel in different display modes;

[0108] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0109] The timing controller is specifically used for:

[0110] For each display sub-panel, according to the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on.

[0111] The brightness calibration current value can be pre-stored in the backlight driver. That is, the backlight driver sets multiple brightness calibration current value address bits for each display sub-panel, with different brightness calibration current value address bits storing the brightness calibration current value for different display modes of the display sub-panel. In one example, if the display panel includes n display modes, the backlight driver can set at least n brightness calibration current value address bits for each display sub-panel, with each brightness calibration current value address bit storing the brightness calibration current value for a display mode.

[0112] In an example, the timing controller matches the brightness calibration current value stored in each brightness calibration current value address bit for each display sub-panel according to the target brightness calibration current value corresponding to the display sub-panel. When the target brightness calibration current value corresponding to the display sub-panel is successfully matched, the brightness calibration current value address bit is used as the target brightness calibration current value address bit, and the target brightness calibration current value address bit is turned on through the GPIO drive method.

[0113] In another example, the timing controller matches the display mode corresponding to the brightness calibration current value stored in each brightness calibration current value address bit for each display sub-panel according to the target display mode corresponding to the display sub-panel. When the target display mode corresponding to the display sub-panel is successfully matched, the brightness calibration current value address bit is used as the target brightness calibration current value address bit, and the target brightness calibration current value address bit is turned on through the GPIO drive method.

[0114] The timing controller is connected to the backlight driver through GPIO. After the timing controller obtains the display mode switching instruction, for each display sub-panel, according to the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on.

[0115] In a possible implementation, the display panel corresponds to two display modes, and the backlight driver sets two brightness calibration current value address bits for each display sub-panel; different brightness calibration current value address bits store brightness calibration current values ​​of the display sub-panel in different display modes;

[0116] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0117] The timing controller is specifically used for:

[0118] For each display sub-panel, according to the display mode switching instruction, the currently connected brightness calibration current value address bit is disconnected, and the currently unconnected brightness calibration current value address bit is connected.

[0119] The display panel can have only two display modes. The backlight driver sets two brightness calibration current value address bits for each display sub-panel. The two brightness calibration current value address bits respectively store the brightness calibration current values ​​of the display sub-panel under the two display modes. Because there are only two display modes, when the timing controller receives a display mode switching instruction, indicating that the current display mode needs to be switched, the currently connected brightness calibration current value address bit can be disconnected, and the currently unconnected brightness calibration current value address bit can be connected, that is, by switching the brightness calibration current value address bit to be connected, the backlight driver can adjust the brightness of the display sub-panel based on the target brightness calibration current value.

[0120] Each address bit in the backlight driver can correspond to one display sub-panel or multiple display sub-panels. In other words, the calibration current value written into one address bit in the backlight driver can control the brightness of only one display sub-panel or multiple display sub-panels.

[0121] In one possible embodiment, the display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode; the timing controller includes a first integrated circuit bus interface, and the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface;

[0122] The timing controller stores brightness calibration current values ​​corresponding to each display sub-panel group under different display modes;

[0123] The timing controller is specifically used for:

[0124] Based on the display mode switching instruction, acquiring a brightness calibration current value corresponding to each display sub-panel group in a target display mode from brightness calibration current values ​​corresponding to each display sub-panel group in different display modes stored in the timing controller;

[0125] rewriting the brightness calibration current value in the address bit corresponding to each display sub-panel group in the backlight driver into the target brightness calibration current value;

[0126] The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

[0127] The display sub-panels of the display panel can be grouped, and the display sub-panels with the same brightness calibration current value under the same display mode can be divided into a group. That is, the display module includes multiple display sub-panel groups, and each display sub-panel group includes at least one display sub-panel.

[0128] The address bit in the backlight driver can be set based on the display sub-panel group. For example, one address bit is set to correspond to at least one display sub-panel. When the number of display sub-panels included in the display sub-panel group is relatively large, one address bit can be set to correspond to multiple display sub-panels. For example, a display sub-panel group includes 10 display sub-panels, then the display sub-surface group corresponds to one address bit, or one display sub-surface group corresponds to 2 address bits, and each address bit corresponds to multiple display sub-panels.

[0129] Based on the display mode switching instruction, the timing controller obtains the brightness calibration current value corresponding to each display sub-panel group in the target display mode from the brightness calibration current value corresponding to each display sub-panel group in different display modes stored in the timing controller. Then, for each display sub-module, based on the identifier of the display sub-module, the timing controller determines the address bit corresponding to the display sub-module in the backlight driver, and then rewrites the brightness calibration current value of the address bit corresponding to the display sub-module in the backlight driver to the target brightness calibration current value.

[0130] By adjusting the brightness of multiple display sub-panels through one address bit, resources of the backlight driver can be saved.

[0131] In a possible implementation, the display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode;

[0132] The timing controller stores brightness calibration current values ​​corresponding to each display sub-panel group under different display modes;

[0133] The backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0134] The timing controller is specifically used for:

[0135] Based on the display mode switching instruction, acquiring a brightness calibration current value corresponding to each display sub-panel group in a target display mode from brightness calibration current values ​​corresponding to each display sub-panel group in different display modes stored in the timing controller;

[0136] For each display sub-panel group, according to the target brightness calibration current value corresponding to the display sub-panel group, determine the brightness calibration current value address bit corresponding to the display sub-panel group from the plurality of brightness calibration current value address bits, obtain the target brightness calibration current value address bit, turn on the target brightness calibration current value address bit, and rewrite the brightness calibration current value of the target brightness calibration current value address bit to the target brightness calibration current value;

[0137] The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

[0138] The address bits of the backlight driver are set according to the display sub-panel group, so that the brightness of multiple display sub-panels can be adjusted through one address bit, which can save the resources of the backlight driver.

[0139] In a possible implementation, the display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode;

[0140] The backlight driver sets a plurality of brightness calibration current value address bits for each display sub-panel group; different brightness calibration current value address bits store brightness calibration current values ​​under different display modes of the display sub-panel group;

[0141] The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface;

[0142] The timing controller is specifically used for:

[0143] For each display sub-panel group, according to the target brightness calibration current value corresponding to the display sub-panel group, determine the brightness calibration current value address bit corresponding to the display sub-panel group from the plurality of brightness calibration current value address bits, obtain the target brightness calibration current value address bit, and turn on the target brightness calibration current value address bit;

[0144] The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

[0145] The address bits of the backlight driver are set according to the display sub-panel group, so that the brightness of multiple display sub-panels can be adjusted through one address bit, which can save the resources of the backlight driver.

[0146] An embodiment of the present application provides a display screen, comprising any of the display modules described above.

[0147] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0148] Each embodiment in this specification is described in a related manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referenced to each other.

[0149] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: Front-end system, timing controller, backlight driver, display panel, the display panel is composed of multiple display sub-panels; The front-end system obtains a display mode switching instruction and sends the display mode switching instruction to the timing controller; The display mode switching instruction includes a target display mode; The timing controller determines, based on the display mode switching instruction, that the brightness calibration current value written into the address bit corresponding to each display sub-panel in the backlight driver is a target brightness calibration current value, wherein the target brightness calibration current value is the brightness calibration current value corresponding to each display sub-panel in the target display mode; The backlight driver adjusts the display brightness of each of the display sub-panels based on a target brightness calibration current value of each of the display sub-panels; The timing controller stores brightness calibration current values ​​corresponding to the display sub-panels in different display modes; The timing controller is specifically used for: Based on the display mode switching instruction, a brightness calibration current value corresponding to each display sub-panel in the target display mode is obtained from the brightness calibration current values ​​corresponding to each display sub-panel in different display modes stored in the timing controller.

2. The display module according to claim 1, wherein: The timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface; The timing controller is specifically used for: The brightness calibration current value stored in the address bit of each display sub-panel stored in the backlight driver is rewritten into the target brightness calibration current value.

3. The display module according to claim 1, wherein: Each display sub-panel corresponds to a plurality of brightness calibration current value address bits in the backlight driver; The timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface; The timing controller is specifically used for: For each display sub-panel, based on the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on, and the brightness calibration current value of the target brightness calibration current value address bit is rewritten as the target brightness calibration current value.

4. The display module according to claim 1, wherein: Each display sub-panel corresponds to a plurality of brightness calibration current value address bits in the backlight driver; The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface; The timing controller is specifically used for: For each display sub-panel, based on the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on, and the brightness calibration current value of the target brightness calibration current value address bit is rewritten as the target brightness calibration current value.

5. The display module according to claim 1, wherein: The backlight driver sets a plurality of brightness calibration current value address bits for each display sub-panel; different brightness calibration current value address bits store brightness calibration current values ​​of the display sub-panel in different display modes; The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface; The timing controller is specifically used for: For each display sub-panel, according to the target brightness calibration current value corresponding to the display sub-panel, the brightness calibration current value address bit corresponding to the display sub-panel is determined from the multiple brightness calibration current value address bits, the target brightness calibration current value address bit is obtained, and the target brightness calibration current value address bit is turned on.

6. The display module according to claim 1, wherein: The display panel corresponds to two display modes, and the backlight driver sets two brightness calibration current value address bits for each display sub-panel; different brightness calibration current value address bits store the brightness calibration current values ​​of the display sub-panel in different display modes; The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface; The timing controller is specifically used for: For each display sub-panel, according to the display mode switching instruction, the currently connected brightness calibration current value address bit is disconnected, and the currently unconnected brightness calibration current value address bit is connected.

7. The display module according to claim 1, wherein: The display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode; The timing controller stores brightness calibration current values ​​corresponding to each display sub-panel group under different display modes; The timing controller includes a first integrated circuit bus interface, the backlight driver includes a second integrated circuit bus interface, and the first integrated circuit bus interface is connected to the second integrated circuit bus interface; The timing controller is specifically used for: Based on the display mode switching instruction, acquiring a brightness calibration current value corresponding to each display sub-panel group in a target display mode from brightness calibration current values ​​corresponding to each display sub-panel group in different display modes stored in the timing controller; rewriting the brightness calibration current value in the address bit corresponding to each display sub-panel group in the backlight driver into the target brightness calibration current value; The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

8. The display module according to claim 1, wherein: The display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode; The timing controller stores brightness calibration current values ​​corresponding to each display sub-panel group under different display modes; The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface; The timing controller is specifically used for: Based on the display mode switching instruction, acquiring a brightness calibration current value corresponding to each display sub-panel group in a target display mode from brightness calibration current values ​​corresponding to each display sub-panel group in different display modes stored in the timing controller; For each display sub-panel group, according to the target brightness calibration current value corresponding to the display sub-panel group, determine the brightness calibration current value address bit corresponding to the display sub-panel group from the plurality of brightness calibration current value address bits, obtain the target brightness calibration current value address bit, turn on the target brightness calibration current value address bit, and rewrite the brightness calibration current value of the target brightness calibration current value address bit to the target brightness calibration current value; The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

9. The display module according to claim 1, wherein: The display panel includes a plurality of display sub-panel groups, each display sub-panel group includes at least one display sub-panel, and the display sub-panels in the same display sub-panel group have the same corresponding brightness calibration current value in the same display mode; The backlight driver sets a plurality of brightness calibration current value address bits for each display sub-panel group; different brightness calibration current value address bits store brightness calibration current values ​​under different display modes of the display sub-panel group; The timing controller includes a first universal input / output interface, the backlight driver includes a second universal input / output interface, and the first universal input / output interface is connected to the second universal input / output interface; The timing controller is specifically used for: For each display sub-panel group, according to the target brightness calibration current value corresponding to the display sub-panel group, determine the brightness calibration current value address bit corresponding to the display sub-panel group from the plurality of brightness calibration current value address bits, obtain the target brightness calibration current value address bit, and turn on the target brightness calibration current value address bit; The backlight driver adjusts the display brightness of each display sub-panel in each display sub-panel group based on a target brightness calibration current value of each display sub-panel group.

10. A display screen, characterized in that: A display module comprising any one of claims 1 to 9.