Brightness control method and device, backlight generation system and display equipment

Abstract

The invention provides a brightness control method and device, a backlight generation system and display equipment, and relates to the technical field of liquid crystal display. The brightness control method comprises the following steps: acquiring real-time brightness information obtained by detecting the brightness of a backlight area by a light intensity identification device; light of the backlight area is ambient light or mixed light of the ambient light and backlight, the ambient light is obtained by leading external ambient light into the backlight area through a leading-in device, and the backlight is light emitted to the backlight area by a backlight lamp panel; and adjusting the brightness of the backlight lamp panel at least once based on the real-time brightness information until the brightness of the backlight area reaches the target brightness. The light emitting brightness of the backlight lamp panel is reduced by means of the ambient light, so that the power consumption of the backlight lamp panel is reduced, and the power consumption of the whole machine is further reduced.

Description

Technical Field

[0001] The present application relates to the field of liquid crystal display technology, and more specifically, to a brightness control method and device thereof, a backlight generation system, and a display device. Background Art

[0002] Liquid crystal display screens generally include backlight, lower polarizer, liquid crystal and upper polarizer. Liquid crystal display screens use liquid crystal material as the basic component, and fill the liquid crystal material between two parallel plates. Voltage is used to change the arrangement of molecules inside the liquid crystal material to achieve the purpose of shading and light transmission to display different depths, thus forming a patchwork image.

[0003] At present, in the backlight generation system of the LCD screen, the backlight panel acts as a backlight source to emit light to the backlight area, and the light can pass through the backlight area to the lower polarizer of the LCD display system, so that the LCD screen emits light. In the entire LCD screen, the power consumption of the backlight source accounts for the largest proportion of the total power consumption of the whole machine.

[0004] Therefore, there is an urgent need for a solution to reduce the power consumption of the backlight source to reduce the power consumption of the entire device. Summary of the invention

[0005] The present application proposes a brightness control method and device thereof, a backlight generation system, and a display device, so as to solve the technical problem of high power consumption of the backlight source existing in the related art.

[0006] In a first aspect, an embodiment of the present application provides a brightness control method, comprising: Acquire real-time brightness information obtained by detecting the brightness of the backlight area by a light intensity recognition device; the light in the backlight area is ambient light or a mixture of ambient light and backlight, the ambient light is obtained by introducing external ambient light into the backlight area through an introduction device, and the backlight is light emitted by the backlight panel to the backlight area; Based on the real-time brightness information, the brightness of the backlight panel is adjusted at least once until the brightness of the backlight area reaches the target brightness.

[0007] In a possible implementation, based on the real-time brightness information, adjusting the brightness of the backlight panel at least once until the brightness of the backlight area reaches the target brightness includes: In each adjustment cycle, based on the real-time brightness information and the target brightness, the luminous information of the backlight panel is determined, and based on the luminous information, the luminous intensity of the backlight panel is controlled; The adjustment cycle is performed at least once in a loop until the brightness of the backlight area reaches the target brightness.

[0008] In a possible implementation, based on the light emission information, controlling the light emission of the backlight panel includes: Converting luminous information into control information; The control information is sent to the backlight panel so that the backlight panel emits light based on the control information.

[0009] In a second aspect, an embodiment of the present application provides a brightness control device, including: The light intensity recognition device is used to detect the brightness of the backlight area to obtain real-time brightness information; the light in the backlight area is ambient light or a mixture of ambient light and backlight, the ambient light is obtained by introducing external ambient light into the backlight area through an introduction device, and the backlight is the light emitted by the backlight panel to the backlight area; The brightness adjustment device is connected to the light intensity recognition device and is used to obtain real-time brightness information. Based on the real-time brightness information, the brightness of the backlight panel is adjusted at least once until the brightness of the backlight area reaches the target brightness.

[0010] In one possible implementation, the light intensity recognition device includes a brightness sensor; The sensing area of ​​the brightness sensor faces the backlight area; The brightness sensor is used to detect the brightness of the backlight area to obtain real-time brightness information, and send the real-time brightness information to the brightness adjustment device through the communication interface.

[0011] In a third aspect, an embodiment of the present application provides a backlight generation system, comprising: a backlight generation device, and a brightness control device according to the second aspect; The backlight generating device comprises an introduction device, a backlight lamp board and a backlight area, wherein the backlight lamp board forms a first side of the backlight area; The introduction device includes a light collecting device and a light guiding channel which are connected, and the light collecting device guides the external ambient light into the backlight area through the light guiding channel; The brightness adjustment device is connected to the backlight panel and is used for adjusting the brightness of the backlight panel.

[0012] In one possible implementation, the light collecting device includes at least one light collector; The light collector includes a light guide formed of a light guiding material.

[0013] In a possible implementation, the end of the light guide channel forms the second side of the backlight area; Alternatively, the backlight generating device includes a connecting plate, the connecting plate is connected to the end of the light guiding channel, and the connecting plate forms the second side of the backlight area.

[0014] In a possible implementation, the backlight generation system further includes at least one of the following: The backlight generating device further comprises a light reflecting device, which is arranged opposite to the light guiding channel and forms a third side of the backlight area; The backlight generating device further comprises a light expanding device, which forms a fourth side of the backlight area and is used for expanding the backlight of the backlight area to the liquid crystal display system.

[0015] In a fourth aspect, an embodiment of the present application provides a liquid crystal display screen, comprising: a liquid crystal display system and a backlight generation system according to the third aspect; The liquid crystal display system includes a lower polarizer, liquid crystal and an upper polarizer connected in sequence; The backlight generating system is used to output the backlight to the lower polarizer.

[0016] In a fifth aspect, an embodiment of the present application provides a display device, comprising the liquid crystal display screen of the fourth aspect or the backlight generating system of the third aspect.

[0017] The beneficial technical effects brought about by the technical solution provided by the embodiment of the present application include: The embodiment of the present application can obtain real-time brightness information obtained by the light intensity recognition device detecting the brightness of the backlight area, and then can adjust the brightness of the backlight panel at least once based on the real-time brightness information until the brightness of the backlight area reaches the target brightness. Since the light in the backlight area is ambient light or a mixture of ambient light and backlight, that is, the embodiment of the present application can introduce external ambient light into the backlight area through an introduction device, the ambient light and the backlight can be mixed, and with the help of natural light, the luminous brightness of the backlight panel is reduced, and the brightness of the backlight area can also reach the target brightness, which can meet the backlight brightness requirements of the liquid crystal display. Therefore, the embodiment of the present application reduces the power consumption of the backlight panel by reducing the luminous brightness of the backlight panel with the help of ambient light, thereby reducing the power consumption of the entire machine.

[0018] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 A schematic diagram of the structure of a first liquid crystal display screen provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a brightness control device provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a backlight generation system provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of a second liquid crystal display screen provided in an embodiment of the present application; Figure 5A schematic diagram of the structure of a third liquid crystal display screen provided in an embodiment of the present application; Figure 6 A flowchart of a brightness control method provided in an embodiment of the present application. Reference numerals: 1- LCD display; 10- Backlight generation system; 110-brightness control device, 111-light intensity recognition device, 112-brightness adjustment device; 120-backlight generating device, 121-backlight lamp board, 122-backlight area, 123-introduction device, 1231-light collecting device, 1232-light guiding channel, 124-connecting plate, 125-reflecting device, 126-light expansion device; 20 - liquid crystal display system, 210 - lower polarizer, 220 - liquid crystal, 230 - upper polarizer. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0021] It will be understood by those skilled in the art that, unless specifically stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the wording "including" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the implementation of other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the present technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the element may be directly connected or coupled to the other element, or it may refer to the connection relationship between the element and the other element through an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" may be implemented as "A", or as "B", or as "A and B".

[0022] The brightness control method and device thereof, backlight generation system, and display device provided in the present application are intended to solve the above technical problems in the prior art.

[0023] The following is a detailed description of the technical solution of the present application and how the technical solution of the present application solves the above technical problems with specific embodiments. It should be noted that the following implementations can refer to, draw on or combine with each other, and the same terms, similar features and similar implementation steps in different implementations will not be described repeatedly.

[0024] See also Figure 1 As shown, the embodiment of the present application provides a schematic structural diagram of a first liquid crystal display screen 1. The liquid crystal display screen 1 comprises: a liquid crystal display system 20 of the embodiment of the present application and a backlight generation system 10 of the embodiment of the present application.

[0025] The liquid crystal display screen 1 of the embodiment of the present application can be used as an outdoor display screen for outdoor display. The liquid crystal display screen 1 can be applied to various electronic devices that require a display screen. The backlight generation system 10 of the embodiment of the present application is used to output the backlight to the liquid crystal display system 20 so that the liquid crystal display screen 1 displays a picture.

[0026] See also Figure 2 As shown, the present embodiment provides a schematic diagram of the structure of a brightness control device 110. The brightness control device 110 is an application product of the brightness control method of the present embodiment. The brightness control device 110 includes a light intensity recognition device 111 and a brightness adjustment device 112.

[0027] The light intensity recognition device 111 is used to detect the brightness of the backlight area 122 to obtain real-time brightness information; the light in the backlight area 122 is ambient light or a mixture of ambient light and backlight, the ambient light is obtained by introducing external ambient light into the backlight area 122 through the introduction device 123, and the backlight is the light emitted by the backlight panel 121 to the backlight area 122.

[0028] The brightness adjustment device 112 is connected to the light intensity recognition device 111, and is used to obtain real-time brightness information, and based on the real-time brightness information, adjust the brightness of the backlight panel 121 at least once until the brightness of the backlight area 122 reaches the target brightness.

[0029] Optionally, the ambient light and the backlight may be evenly distributed within the backlight area 122 .

[0030] The brightness adjustment device 112 of the embodiment of the present application can obtain the real-time brightness information obtained by the light intensity recognition device 111 detecting the brightness of the backlight area 122, and then can adjust the brightness of the backlight panel 121 at least once based on the real-time brightness information until the brightness of the backlight area 122 reaches the target brightness. Since the light in the backlight area 122 is ambient light or a mixture of ambient light and backlight, that is, the embodiment of the present application can introduce external ambient light into the backlight area 122 through the introduction device 123, the ambient light and the backlight can be mixed, and with the help of natural light, the luminous brightness of the backlight panel 121 is reduced, and the brightness of the backlight area can also reach the target brightness, which can meet the backlight brightness requirements of the liquid crystal display 1.

[0031] Therefore, the brightness control device 110 of the embodiment of the present application reduces the light brightness of the backlight board by using ambient light, thereby reducing the power consumption of the backlight board 121 and further reducing the power consumption of the entire device.

[0032] Specifically, the ambient light in the embodiment of the present application is equivalent to a backlight source and can be used as a backlight, thereby reducing the luminous intensity of the backlight board 121 and further reducing the power consumption of the backlight board 121 .

[0033] Optionally, the light intensity recognition device 111 can continuously detect real-time brightness information and send the real-time brightness information to the brightness adjustment device 112, so that the brightness adjustment device 112 can continuously adjust the brightness of the backlight panel 121 based on the real-time brightness information and the target brightness. The real-time brightness information of the present application is the brightness information detected in real time by the light intensity recognition device 111. The light intensity recognition device 111 continuously detects the brightness of the backlight area 122 and continuously obtains the real-time brightness information.

[0034] In practical applications, since the target brightness and the brightness of the ambient light also vary, it is necessary to continuously detect the brightness of the backlight area 122 to adjust the brightness of the backlight panel 121 in real time.

[0035] Optionally, the brightness adjustment device 112 is also used to determine the luminous information of the backlight panel 121 based on the real-time brightness information and the target brightness in each adjustment cycle, and control the luminescence of the backlight panel 121 based on the luminous information; and cyclically execute at least one adjustment cycle until the brightness of the backlight area 122 reaches the target brightness.

[0036] Optionally, the brightness adjustment device 112 is further used to convert the light emission information into control information; and send the control information to the backlight board 121 so that the backlight board 121 emits light based on the control information.

[0037] As an example, the brightness adjustment device 112 can be a CPU (Central Processing Unit), a general processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The brightness adjustment device 112 can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0038] After obtaining the collected real-time brightness information, the brightness adjustment device 112 of the embodiment of the present application can calculate the appropriate light information that the backlight board 121 should emit according to the target brightness, and convert the light information into control information for controlling the brightness of the backlight board 121, and send the control information to the backlight board 121 to adjust the brightness of the backlight board 121 to the required brightness, so as to achieve the overall output brightness that meets the screen working needs.

[0039] Optionally, the light intensity recognition device 111 can obtain the brightness of the backlight area 122 in real time, so that the brightness adjustment device 112 can be adjusted based on the current real-time brightness information of the backlight area 122. The light intensity recognition device 111 continuously feeds back the current real-time brightness information, so that the brightness adjustment device 112 can achieve the target brightness of the backlight area 122 after at least one adjustment. This is a process of continuous feedback and adjustment, which can ensure that the brightness of the backlight area 122 always meets the requirements, thereby ensuring the display requirements of the liquid crystal display 1.

[0040] See also Figure 3 As shown, the present application embodiment provides a schematic diagram of the structure of a backlight generation system 10. Figure 3 As shown, the backlight generating system 10 includes: a backlight generating device 120 and a brightness control device 110 .

[0041] Specifically, the brightness control device 110 is connected to the backlight generating device 120 , and the brightness control device 110 can adjust the backlight of the backlight generating device 120 so that the brightness of the backlight area 122 reaches the target brightness, thereby achieving the display effect of the liquid crystal display screen 1 .

[0042] Specifically, the embodiment of the present application introduces an ambient light introduction device 123 into the traditional backlight generation system 10, collects and guides the ambient light to the backlight generation system 10, and mixes it with the traditional backlight panel 121 as a backlight source to achieve the backlight required by the display screen.

[0043] The brightness of the backlight generating device 120 of the embodiment of the present application is controlled by the brightness adjusting device 112, which receives the brightness of the external input light identified by the light intensity identifying device 111, and automatically adjusts the brightness of the backlight panel 121 in combination with the brightness required to be output by the backlight generating system 10. The light emitted by the backlight panel 121 after adjustment is mixed with the externally collected light to generate a suitable backlight, which is sent to the liquid crystal display system 20 for screen display.

[0044] See also Figure 4 As shown, the present application embodiment provides a structural schematic diagram of a second liquid crystal display screen 1. The liquid crystal display system 20 includes a lower polarizer 210, a liquid crystal 220 and an upper polarizer 230 connected in sequence; the backlight generation system 10 is used to output backlight to the lower polarizer 210.

[0045] Specifically, the liquid crystal display screen 1 generally uses a backlight source to provide a light source. In the entire liquid crystal display screen 1, the power consumption of the backlight source accounts for the largest proportion of the power consumption of the entire device. The embodiment of the present application is provided with an introduction device 123, and the introduction device 123 is used as an ambient light guide system to introduce external ambient light. The ambient light is guided into the backlight area 122 by the introduction device 123, and the introduced ambient light is converted into the backlight of the liquid crystal display screen 1, thereby reducing the use of the backlight panel, and then reducing the power consumption of the entire device. The embodiment of the present application is applicable to liquid crystal display screens 1 that need to use a backlight as a light source and other display screens that need to use a backlight source.

[0046] The backlight generation system 10 of the embodiment of the present application is a system that can reduce the power consumption of an outdoor display screen and is suitable for an outdoor liquid crystal display screen 1 .

[0047] See also Figure 4 As shown, the backlight generating device 120 includes an introduction device 123 , a backlight board 121 and a backlight area 122 , and the backlight board 121 forms a first side of the backlight area 122 .

[0048] The introducing device 123 includes a light collecting device 1231 and a light guiding channel 1232 which are connected to each other. The light collecting device 1231 introduces the external ambient light into the backlight area 122 through the light guiding channel 1232 .

[0049] The brightness adjustment device 112 is connected to the backlight board 121 and is used to adjust the brightness of the backlight board 121 .

[0050] In the related art, since most of the power consumption of the liquid crystal display screen 1 comes from the backlight, if the power consumption of the backlight of the backlight panel 121 can be reduced, the overall power consumption of the screen can be reduced.

[0051] Based on the above considerations, the backlight generation system 10 of the embodiment of the present application is designed with an introduction device 123 to mix the introduced ambient light with the backlight, and on the premise of meeting the backlight brightness requirements of the display screen, the brightness of the backlight board 121 is reduced, that is, the power consumption of the backlight board 121 is reduced, thereby reducing the power consumption of the entire device. The backlight generation system 10 of the embodiment of the present application introduces a mixing and adjustment mechanism for the light source of the backlight board 121 and the ambient light source, and can automatically adjust the brightness that the backlight board 121 needs to emit according to the brightness of the external ambient light.

[0052] The liquid crystal display screen 1 of the embodiment of the present application is applicable to all display systems consisting of backlight + liquid crystal.

[0053] In some embodiments, the light intensity recognition device 111 includes a brightness sensor; the sensing area of ​​the brightness sensor faces the backlight area 122 .

[0054] The brightness sensor is used to detect the brightness of the backlight area 122 to obtain real-time brightness information, and send the real-time brightness information to the brightness adjustment device 112 through the communication interface.

[0055] The embodiment of the present application collects real-time brightness information through a brightness sensor, and then sends the collected real-time brightness information to the brightness adjustment device 112 through a communication interface. The brightness sensor can accurately detect the brightness of the backlight area 122, thereby facilitating the brightness adjustment device 112 to adjust the brightness of the backlight panel 121 so that the brightness of the backlight area 122 reaches the target brightness and meets the display requirements of the liquid crystal display 1.

[0056] In some embodiments, the light collecting device 1231 includes at least one light collector. The light collector includes a light guide formed of a light guiding material.

[0057] In the embodiment of the present application, the ambient light is collected by a light collector of a light guide member composed of a light guide material, and the collected ambient light is guided into the backlight generating device 120 .

[0058] In some embodiments, the end of the light guide channel 1232 forms a second side of the backlight area 122. The end of the light guide channel 1232 can be directly connected to the backlight area 122 and serve as one side of the backlight area 122.

[0059] See also Figure 5 As shown, the present application embodiment provides a structural schematic diagram of a third liquid crystal display screen 1. Figure 5As shown, the backlight generating device 120 includes a connecting plate 124 , which is connected to the end of the light guiding channel 1232 , and the connecting plate 124 forms a second side of the backlight area 122 .

[0060] Optionally, the backlight area 122 may be an enclosed area, or may be an area with an opening on one side, with the opening facing the lower polarizer 210 , so that the backlight is output to the liquid crystal display system 20 .

[0061] See also Figure 5 As shown, the backlight generation system 10 further includes at least one of the following: The backlight generating device 120 further includes a light reflecting device 125 . The light reflecting device 125 is disposed opposite to the light guiding channel 1232 . The light reflecting device 125 forms a third side of the backlight region 122 .

[0062] The backlight generating device 120 further includes a light expanding device 126 . The light expanding device 126 forms a fourth side of the backlight area 122 . The light expanding device 126 is used to expand the backlight of the backlight area 122 to the liquid crystal display system 20 .

[0063] Optionally, the reflective device 125 can reflect light to improve light utilization.

[0064] The backlight area 122 of the embodiment of the present application is an area enclosed by the backlight board 121, the connecting plate 124, the reflective device 125 and the light expansion device 126, which prevents light from being exposed and improves the utilization rate of light.

[0065] The backlight generating system 10 of the embodiment of the present application first collects the external ambient light by a light collecting device 1231 that can collect the external ambient light, and guides the collected ambient light to the inside of the backlight generating device 120 through a light guiding channel 1232. The collected ambient light is mixed with the light generated by the backlight panel 121 and is evenly diffused and output through the light expansion device 126.

[0066] At the same time, the backlight generating system 10 of the embodiment of the present application identifies the collected ambient light brightness through the light intensity recognition device 111, and feeds back the identified brightness to the brightness adjustment device 112. The brightness adjustment device 112 automatically adjusts the brightness of the backlight panel 121 according to the real-time brightness information, adjusts the overall brightness to meet the display screen requirements, and then evenly diffuses the light to the entire screen through the light expansion device 126.

[0067] See also Figure 6 As shown, the present embodiment provides a flow chart of a brightness control method. The brightness control method includes: step S601 to step S602.

[0068] S601, obtaining real-time brightness information obtained by the light intensity recognition device 111 detecting the brightness of the backlight area 122; the light in the backlight area 122 is ambient light or a mixture of ambient light and backlight, the ambient light is obtained by introducing external ambient light into the backlight area 122 through the introduction device 123, and the backlight is the light emitted by the backlight panel 121 to the backlight area 122.

[0069] S602: Based on the real-time brightness information, adjust the brightness of the backlight panel 121 at least once until the brightness of the backlight area 122 reaches the target brightness.

[0070] The brightness control method of the embodiment of the present application is performed by the brightness adjustment device 112. The light intensity recognition device 111 can obtain the brightness of the backlight area 122 in real time, so that the brightness adjustment device 112 can adjust based on the current real-time brightness information of the backlight area 122. The light intensity recognition device 111 continuously feeds back the current real-time brightness information, so that the brightness adjustment device 112 can adjust the brightness of the backlight area 122 to the target brightness after at least one adjustment. This is a process of continuous feedback and adjustment, which can ensure that the brightness of the backlight area 122 always meets the requirements, thereby ensuring the display requirements of the liquid crystal display screen 1.

[0071] The brightness control method of the embodiment of the present application can obtain the real-time brightness information obtained by the light intensity recognition device 111 detecting the brightness of the backlight area 122, and then can adjust the brightness of the backlight panel 121 at least once based on the real-time brightness information until the brightness of the backlight area 122 reaches the target brightness. Since the light of the backlight area 122 is ambient light or a mixture of ambient light and backlight, that is, the embodiment of the present application can introduce external ambient light into the backlight area 122 through the introduction device 123, the ambient light and the backlight can be mixed, and with the help of natural light, the luminous brightness of the backlight panel 121 is reduced, and the brightness of the backlight area can also reach the target brightness, which can meet the backlight brightness requirements of the liquid crystal display 1.

[0072] Therefore, the brightness control method of the embodiment of the present application can reduce the luminous brightness of the backlight board by using ambient light, thereby reducing the power consumption of the backlight board 121 and further reducing the power consumption of the entire device.

[0073] In some embodiments, based on the real-time brightness information, the brightness of the backlight panel 121 is adjusted at least once until the brightness of the backlight area 122 reaches the target brightness, including: In each adjustment cycle, based on the real-time brightness information and the target brightness, the light emission information of the backlight panel 121 is determined, and based on the light emission information, the light emission of the backlight panel 121 is controlled; The adjustment cycle is executed at least once in a loop until the brightness of the backlight area 122 reaches the target brightness.

[0074] In some embodiments, based on the light emission information, controlling the light emission of the backlight panel 121 includes: converting the light emission information into control information; and sending the control information to the backlight panel 121 so that the backlight panel 121 emits light based on the control information.

[0075] After obtaining the collected real-time brightness information, the brightness control method of the embodiment of the present application can calculate the appropriate luminous information that the backlight panel 121 should emit according to the target brightness, and convert the luminous information into control information for controlling the brightness of the backlight panel 121, and send the control information to the backlight panel 121 to adjust the brightness of the backlight panel 121 to the required brightness, thereby achieving an overall output brightness that meets the screen working needs.

[0076] The brightness control method of the embodiment of the present application can introduce the ambient light introduction device 123 into the traditional backlight generation system 10, collect and guide the ambient light to the backlight generation system 10, and mix it with the traditional backlight panel 121 as a backlight source to achieve the backlight required by the display screen.

[0077] The brightness control method of the embodiment of the present application has the same inventive concept and the same beneficial effects as the embodiments described in the previous liquid crystal display screen 1 or the backlight generating system 10 and the brightness control device 110. For the contents not described in detail in the brightness control method of the present application, please refer to the description of the previous embodiments and will not be repeated here.

[0078] An embodiment of the present application provides a display device, including a liquid crystal display screen 1 according to an embodiment of the present application or a backlight generation system 10 according to an embodiment of the present application.

[0079] Optionally, the display device may be a smart phone, a tablet computer, a two-in-one computer, a laptop computer, an e-reader, a smart wearable device, etc.

[0080] The display device of the embodiment of the present application can adopt a liquid crystal display screen 1 that needs to use a backlight as a light source and other display screens that need to use a backlight source, and the display device can be suitable for outdoor use.

[0081] The display device of the embodiment of the present application includes the liquid crystal display screen 1 of the embodiment of the present application or the backlight generating system 10 of the embodiment of the present application, and has the same inventive concept and the same beneficial effects as the various embodiments described in the previous liquid crystal display screen 1 or the backlight generating system 10. For the contents not described in detail in the display device of the present application, please refer to the description of the corresponding liquid crystal display screen 1 or the backlight generating system 10 shown in the previous text, and will not be repeated here.

[0082] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, changed, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, changed, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the related art that are similar to those disclosed in this application may also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0083] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0084] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0085] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0086] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0087] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A brightness control method, characterized in that: include: Acquire real-time brightness information obtained by detecting the brightness of a backlight area by a light intensity recognition device; the light in the backlight area is ambient light or a mixture of ambient light and backlight, the ambient light is obtained by introducing external ambient light into the backlight area through an introduction device, and the backlight is light emitted by a backlight lamp panel to the backlight area; Based on the real-time brightness information, the brightness of the backlight panel is adjusted at least once until the brightness of the backlight area reaches a target brightness.

2. The brightness control method according to claim 1, characterized in that: Based on the real-time brightness information, adjusting the brightness of the backlight panel at least once until the brightness of the backlight area reaches a target brightness, including: In each adjustment cycle, based on the real-time brightness information and the target brightness, the light emission information of the backlight panel is determined, and based on the light emission information, the light emission of the backlight panel is controlled; The adjustment cycle is cyclically executed at least once until the brightness of the backlight area reaches the target brightness.

3. The brightness control method according to claim 2, characterized in that: Based on the light emission information, controlling the light emission of the backlight panel includes: converting the light emission information into control information; The control information is sent to the backlight panel so that the backlight panel emits light based on the control information.

4. A brightness control device, characterized in that: include: A light intensity recognition device, used to detect the brightness of a backlight area to obtain real-time brightness information; the light in the backlight area is ambient light or a mixture of ambient light and backlight, the ambient light is obtained by introducing external ambient light into the backlight area through an introduction device, and the backlight is light emitted by a backlight lamp panel to the backlight area; The brightness adjustment device is connected to the light intensity recognition device and is used to obtain the real-time brightness information and adjust the brightness of the backlight panel at least once based on the real-time brightness information until the brightness of the backlight area reaches the target brightness.

5. The brightness control device according to claim 4, characterized in that: The light intensity recognition device includes a brightness sensor; The sensing area of ​​the brightness sensor faces the backlight area; The brightness sensor is used to detect the brightness of the backlight area to obtain real-time brightness information, and send the real-time brightness information to the brightness adjustment device through a communication interface.

6. A backlight generation system, characterized in that: include: A backlight generating device, and a brightness control device as claimed in any one of claims 4 to 5; The backlight generating device comprises an introduction device, a backlight lamp board and a backlight area, wherein the backlight lamp board forms a first side of the backlight area; The introduction device includes a light collecting device and a light guiding channel that are connected, and the light collecting device introduces external ambient light into the backlight area through the light guiding channel; The brightness adjustment device is connected to the backlight panel and is used to adjust the brightness of the backlight panel.

7. The backlight generation system according to claim 6, characterized in that: The light collecting device comprises at least one light collector; The light collector includes a light guide formed of a light guiding material.

8. The backlight generation system according to claim 6, characterized in that: The end of the light guide channel forms the second side of the backlight area; Alternatively, the backlight generating device comprises a connecting plate, the connecting plate is connected to the end of the light guiding channel, and the connecting plate forms the second side of the backlight area.

9. The backlight generation system according to claim 6, characterized in that: Also includes at least one of the following: The backlight generating device further comprises a light reflecting device, the light reflecting device is arranged opposite to the light guiding channel, and the light reflecting device forms a third side of the backlight area; The backlight generating device further comprises a light expanding device, wherein the light expanding device forms a fourth side of the backlight area, and the light expanding device is used to expand the backlight of the backlight area to a liquid crystal display system.

10. A liquid crystal display screen, characterized in that: Comprising: a liquid crystal display system and a backlight generating system as claimed in any one of claims 6 to 9; The liquid crystal display system comprises a lower polarizer, liquid crystal and an upper polarizer connected in sequence; The backlight generating system is used to output backlight to the lower polarizer.

11. A display device, characterized in that: It comprises the liquid crystal display screen as claimed in claim 10 or the backlight generating system as claimed in any one of claims 6-9.

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