Backlight plate, driving method of backlight plate, display panel and display equipment

Abstract

The embodiment of the invention relates to a backlight plate, a driving method of the backlight plate, a display panel and display equipment, the backlight plate comprises a light-emitting module array, a circuit board and a light-emitting driving module, the light-emitting module array is arranged on the circuit board, and each light-emitting module in the light-emitting module array is connected with the light-emitting driving module; each light-emitting module in the light-emitting module array comprises at least two light-emitting chips, and each light-emitting chip in the at least two light-emitting chips is connected with the light-emitting driving module so as to receive a driving signal from the light-emitting driving module. According to the embodiment of the invention, the light-emitting area and the light-emitting angle of the light-emitting module can be increased, and the phenomenon of non-uniform overall light emission of the backlight plate caused by different emergent angles of a single light-emitting chip in different directions is avoided, so that the light-emitting uniformity of the backlight plate is improved, and the distance between the backlight plate and a liquid crystal panel can be further reduced.

Description

Technical Field

[0001] The present application relates to the technical field of display panels, and in particular to a backlight panel, a driving method for a backlight panel, a display panel and a display device. Background Art

[0002] As the demand for ultra-thin display panels increases, in order to reduce the thickness of the panel, the distance between the LED (Light-Emitting Diode) backlight and the liquid crystal panel can be shortened. However, the light-emitting angle range of the light-emitting module is limited. If the distance between the backlight and the liquid crystal panel is too small, the brightness of the light entering the liquid crystal panel will be unevenly distributed. In order to improve the brightness uniformity of the liquid crystal panel, the number of light-emitting modules can be increased, and the spacing between the light-emitting modules can be shortened. For example, using a large number of miniLEDs can increase the uniformity of lighting. However, as the size of the display panel increases, the number of light-emitting units used will increase rapidly, and the product cost will increase significantly.

[0003] Therefore, how to reduce the distance between the backlight plate and the liquid crystal panel while ensuring the uniformity of display brightness and reducing costs is an urgent problem to be solved. Summary of the invention

[0004] In view of this, in order to solve some or all of the above-mentioned technical problems, the embodiments of the present application provide a backlight panel, a driving method of the backlight panel, a display panel and a display device.

[0005] In a first aspect, an embodiment of the present application provides a backlight panel, which includes: a light-emitting module array, a circuit board and a light-emitting driving module, wherein the light-emitting module array is arranged on the circuit board, and each light-emitting module in the light-emitting module array is connected to the light-emitting driving module; each light-emitting module in the light-emitting module array includes at least two light-emitting chips, and each of the at least two light-emitting chips is respectively connected to the light-emitting driving module to receive a driving signal from the light-emitting driving module.

[0006] In a possible technical solution, the difference between the length and the width of the light-emitting surface formed by at least two light-emitting chips is less than or equal to a preset error threshold.

[0007] In a possible technical solution, each of the at least two light-emitting chips is connected to a light-emitting driving module through a separately arranged circuit; the light-emitting driving module is used to send a driving signal to each of the at least two light-emitting chips according to a preset light-emitting intensity and light-emitting timing.

[0008] In a possible technical solution, the light-emitting driving module is used to: if it is currently in the first light-emitting mode, alternately send a driving signal to each of the at least two light-emitting chips according to a preset interval time; if it is currently in the second light-emitting mode, send a driving signal to each of the at least two light-emitting chips at the same time, so that at least two light-emitting chips emit light at the same time.

[0009] In a possible technical solution, each of the at least two light-emitting chips has a different light-emitting wavelength; the light-emitting driving module is used to: determine the target light-emitting chip from the at least two light-emitting chips according to the currently set color temperature, and send a driving signal corresponding to the color temperature to the target light-emitting chip.

[0010] In a possible technical solution, each light-emitting module in the light-emitting module array also includes an outer colloid and an inner colloid, the refractive index of the outer colloid is greater than the refractive index of the inner colloid, the inner colloid covers at least two light-emitting chips included in the light-emitting module, and the outer colloid covers the inner colloid.

[0011] In a second aspect, an embodiment of the present application provides a driving method for a backlight panel, the method comprising: obtaining preset light-emitting module driving parameters; based on the light-emitting module driving parameters, determining a target light-emitting chip currently being driven from at least two light-emitting chips included in each light-emitting module in the backlight panel; based on the light-emitting module driving parameters, generating a driving signal corresponding to the target light-emitting chip, and sending the driving signal to the target light-emitting chip.

[0012] In a third aspect, an embodiment of the present application provides a display panel, which includes: a liquid crystal panel and the backlight panel described in the first aspect above.

[0013] In a fourth aspect, an embodiment of the present application provides a display device, comprising: a display panel as described in the third aspect above.

[0014] The backlight panel, display panel and display device provided by the embodiment of the present application are provided with a light-emitting module array, a circuit board and a light-emitting driving module in the backlight panel, the light-emitting module array is provided on the circuit board, and each light-emitting module in the light-emitting module array is connected to the light-emitting driving module; each light-emitting module in the light-emitting module array includes at least two light-emitting chips, and each light-emitting chip of the at least two light-emitting chips is respectively connected to the light-emitting driving module to receive a driving signal from the light-emitting driving module. The embodiment of the present application realizes that the light-emitting area and light-emitting angle of the light-emitting module can be increased by providing at least two light-emitting chips in a single light-emitting module without increasing the number of light-emitting modules and compressing the spacing between light-emitting modules, thereby avoiding the phenomenon of uneven light emission of the backlight panel as a whole caused by different emission angles of a single light-emitting chip in different directions, thereby improving the uniformity of light emission of the backlight panel and helping to further reduce the distance between the backlight panel and the liquid crystal panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1 A schematic diagram of the structure of a backlight panel provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the connection relationship between at least two light-emitting chips and a light-emitting driving module provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the structure of the colloid on the light-emitting module provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the structure of two layers of colloid on the light-emitting module provided in an embodiment of the present application;

[0022] Figure 5 A schematic structural diagram of a backlight panel including an organic silicone layer and a microlens array provided in an embodiment of the present application;

[0023] Figure 6 A flowchart of a backlight driving method provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of the structure of a display device provided in an embodiment of the present application.

[0026] Reference numerals:

[0027] 100-backlight panel; 101-light-emitting module array; 1011-at least two light-emitting chips; 1012-colloid; 10121-outer layer of colloid; 10122-inner layer of colloid; 102-circuit board; 103-light-emitting driving module; 104-organic silicone layer; 105-microlens array; 700-display panel; 701-liquid crystal panel; 800-display device; 801-panel frame; 802-power module; 803-data receiving module. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the numerical expressions and the numerical values ​​described in these embodiments do not limit the scope of the present application.

[0029] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of the present application are only used to distinguish between different steps, devices, modules and other objects, and do not represent any specific technical meanings, nor do they indicate the logical order between them.

[0030] It should also be understood that in this embodiment, “plurality” may refer to two or more than two, and “at least one” may refer to one, two or more than two.

[0031] It should also be understood that any component, data or structure mentioned in the embodiments of the present application can generally be understood as one or more, unless explicitly limited or otherwise indicated in the context.

[0032] In addition, the term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0033] It should also be understood that the description of the various embodiments in this application focuses on the differences between the various embodiments, and the same or similar aspects thereof can be referenced to each other, and for the sake of brevity, they will not be described one by one.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0035] Technologies, structures, and devices known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the above-mentioned technologies, structures, and devices should be considered as part of the specification.

[0036] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0037] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. To facilitate the understanding of the embodiments of the present application, the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] Figure 1 A structural schematic diagram of a backlight panel provided in an embodiment of the present application, the backlight panel specifically includes: a light-emitting module array 101, a circuit board 102 and a light-emitting driving module 103, the light-emitting module array 101 is arranged on the circuit board 102, and each light-emitting module in the light-emitting module array 101 is connected to the light-emitting driving module 103.

[0039] Each light-emitting module in the light-emitting module array 101 includes at least two light-emitting chips 1011 . Each of the at least two light-emitting chips 1011 is respectively connected to the light-emitting driving module 103 to receive a driving signal from the light-emitting driving module 103 .

[0040] The light-emitting modules in the light-emitting module array 101 are arranged on the circuit board 102 at a preset interval. Generally, the intervals of the light-emitting modules in the light-emitting module array 101 in two distribution directions (i.e., the length direction and the width direction of the backlight plate) can be the same, so that the light emitted by each light-emitting module can be more evenly distributed.

[0041] The light-emitting module includes a light-emitting chip and may also include a colloid covering the light-emitting chip. The light-emitting chip emits light under the drive signal sent by the driving module. The light-emitting angle of the light-emitting chip is small, and the light intensity distribution at each emission angle is uneven. The light emitted by the light-emitting chip is refracted by the colloid and emitted at a larger emission angle, so that the light distribution emitted by the light-emitting module array 101 as a whole is more uniform. The light-emitting driving module 103 can be set on the circuit board 102, or it can be set outside the circuit board 102 and connected to the circuit board 102 through an interface.

[0042] In this embodiment, a light emitting module includes at least two light emitting chips 1011 , and the at least two light emitting chips 1011 are soldered on the soldering pads of the light emitting module at a set interval (eg, 0.1 mm-0.3 mm).

[0043] Optionally, the difference in length and width of the light-emitting surface formed by at least two light-emitting chips included in each light-emitting module is less than or equal to a preset error threshold. Generally, the preset error threshold should be as small as possible, that is, the light-emitting surface formed by at least two light-emitting chips is close to a square.

[0044] like Figure 2 As shown, it shows a schematic diagram of the positional relationship of the light-emitting chips when a single light-emitting module includes two light-emitting chips (for example, LED1 and LED2). Each light-emitting chip is a rectangular chip, and the two light-emitting chips are soldered side by side on the pad of the light-emitting module, so that the two light-emitting chips form a light-emitting surface with an aspect ratio close to 1. By setting the light-emitting surface composed of at least two light-emitting chips to be close to a square, the light-emitting angles of each light-emitting module in the length and width directions of the backlight plate can be close to the same, so that the overall light distribution of the backlight plate is more uniform.

[0045] This embodiment does not limit the type of light-emitting chip used. For example, a light-emitting chip of a conventional size can be used, or miniLED can be used for light emission. In a traditional backlight panel, each light-emitting module contains a light-emitting chip, and the light-emitting chip is a rectangular chip, resulting in different light-emitting angle ranges in the length direction and the width direction on the light-emitting surface. However, the embodiment of the present application uses multiple light-emitting chips integrated into the same light-emitting module, which can make the aspect ratio of the light-emitting surface close to 1, so that the light-emitting angle ranges in the length direction and the width direction are closer, thereby improving the overall light uniformity of the backlight panel.

[0046] In this embodiment, the light-emitting driving module 103 may be a chip or circuit with a logic control function, and each light-emitting chip may be connected to an output port of the light-emitting driving module 103 to drive each light-emitting chip simultaneously. Each light-emitting chip may also be connected to an output port of the light-emitting driving module 103 separately, and the light-emitting driving module 103 may send a corresponding driving signal to each light-emitting chip separately, thereby controlling the light-emitting brightness and light-emitting timing of each light-emitting chip separately. For example, the light-emitting driving module 103 may drive all the light-emitting chips respectively included in a part of the light-emitting modules to emit light, thereby increasing the brightness of the area where the part of the light-emitting modules is located; and control some of the light-emitting chips respectively included in another part of the light-emitting modules to emit light, thereby reducing the brightness of the area where the part of the light-emitting modules is located.

[0047] The backlight panel provided by the embodiment of the present application has a light-emitting module array, a circuit board and a light-emitting driving module arranged in the backlight panel, the light-emitting module array is arranged on the circuit board, each light-emitting module in the light-emitting module array is connected to the light-emitting driving module; each light-emitting module in the light-emitting module array includes at least two light-emitting chips, each of the at least two light-emitting chips is respectively connected to the light-emitting driving module to receive a driving signal from the light-emitting driving module. The embodiment of the present application realizes that the light-emitting area and light-emitting angle of the light-emitting module can be increased by arranging at least two light-emitting chips in a single light-emitting module without increasing the number of light-emitting modules and without compressing the spacing between light-emitting modules, thereby avoiding the phenomenon of uneven light emission of the backlight panel as a whole caused by different emission angles of a single light-emitting chip in different directions, thereby improving the uniformity of light emission of the backlight panel and helping to further reduce the distance between the backlight panel and the liquid crystal panel.

[0048] In some optional implementations of this embodiment, for each light-emitting module in the light-emitting module array 101, each of the at least two light-emitting chips included in the light-emitting module is connected to the light-emitting driving module 103 through a separately arranged line. The light-emitting driving module 103 can control each light-emitting chip separately.

[0049] The light-emitting driving module 103 is used to send a driving signal to each of the at least two light-emitting chips according to a preset light-emitting intensity and light-emitting timing.

[0050] The light intensity can be controlled by current or voltage, and combined with the light timing, each light-emitting chip can be individually controlled to emit light according to the set frequency, light start time, and light end time. For example, different light-emitting chips in the same light-emitting module can be made to emit light alternately, or one or more light-emitting chips in the same light-emitting module can be controlled to emit light continuously at the same time.

[0051] In this embodiment, each of the multiple light-emitting chips in each light-emitting module is individually connected to the light-emitting driving module. The light-emitting driving module can individually control the brightness and timing of each light-emitting chip, thereby improving the flexibility of controlling the light-emitting characteristics of the backlight panel, which helps to improve the scene adaptability of the backlight panel.

[0052] In some optional implementations of this embodiment, the light-emitting driving module 103 is used to:

[0053] If the first light-emitting mode is currently in use, a driving signal is sent alternately to each of the at least two light-emitting chips 1011 at a preset interval.

[0054] The first light-emitting mode can be controlled by a control program pre-set in the light-emitting driving module 103. In the first light-emitting mode, each light-emitting chip of a single light-emitting module emits light alternately.

[0055] If the second light-emitting mode is currently in place, a driving signal is sent to each of the at least two light-emitting chips 1011 at the same time, so that the at least two light-emitting chips 1011 emit light at the same time.

[0056] In the second light-emitting mode, each light-emitting chip of a single light-emitting module emits light simultaneously, thereby increasing the light-emitting brightness of the area where the light-emitting module is located.

[0057] Optionally, the number and position of the light-emitting modules corresponding to the first light-emitting mode and the second light-emitting mode can be set, that is, all the light-emitting modules can be controlled to emit light according to the timing of the first light-emitting mode or the second light-emitting mode, or some light-emitting modules can be specifically controlled to emit light according to the timing of the first light-emitting mode or the second light-emitting mode, thereby improving the flexibility of the backlight panel brightness control.

[0058] By setting the first light-emitting mode and the second light-emitting mode, this embodiment can flexibly control the light-emitting timing of multiple light-emitting chips included in each light-emitting module. In the first light-emitting mode, the light-emitting chips emit light alternately, which can reduce the light-emitting time of a single light-emitting chip and effectively increase the service life of the light-emitting chip. In the second mode, the light-emitting brightness of the light-emitting module can be effectively increased, thereby further expanding the scene application range of the backlight panel.

[0059] In some optional implementations of this embodiment, the light-emitting wavelength of each light-emitting chip in at least two light-emitting chips 1011 is different. For a single light-emitting module, the light-emitting wavelength of each light-emitting chip included therein can be selected according to demand. That is, chips with different light-emitting wavelengths manufactured by different processes are selected according to demand.

[0060] The light-emitting driving module 103 is used for:

[0061] According to the currently set color temperature, a target light-emitting chip is determined from the at least two light-emitting chips 1011, and a driving signal corresponding to the color temperature is sent to the target light-emitting chip.

[0062] Among them, the light-emitting chips with different light-emitting wavelengths have different color temperatures. For example, the light-emitting chip with a wavelength range of 445.5nm-447nm has a corresponding color temperature of 5647K; the light-emitting chip with a wavelength range of 456nm-457.5nm has a corresponding color temperature of 7262K.

[0063] Light-emitting chips of different wavelengths can be combined to emit light of different color temperatures. According to the required color temperature, the light-emitting chip corresponding to the required color temperature can be selected as the target light-emitting chip. For example, if high color temperature light is required, the light-emitting chip with high color temperature can be controlled to emit light; if low color temperature light is required, the light-emitting chip with low color temperature can be controlled to emit light; if medium color temperature light is required, the light-emitting chips with high and low color temperatures can be controlled to emit light at the same time.

[0064] This embodiment can flexibly control the color temperature of the light-emitting module by arranging light-emitting chips with different light-emitting wavelengths in each light-emitting module, so that the backlight panel can provide more types of color temperatures, further expanding the use scenarios of the backlight panel.

[0065] In some optional implementations of this embodiment, such as Figure 3 As shown, each light-emitting module in the light-emitting module array 101 further includes a colloid 1012 , which covers at least two light-emitting chips 1011 , and the colloid 1012 is a central concave structure.

[0066] The material of the colloid 1012 may be an organic silica compound, mainly composed of organic siloxane, which also contains some organic groups, such as methyl, phenyl, etc. The content of these organic groups can make the organic silica have different refractive indices.

[0067] Generally, during the design of the structure of the colloid 1012, the parameters of the recessed structure can be adjusted according to actual needs. For example, optical design software can be used to set the desired luminous angle range and light intensity distribution. The software can adjust the depth, curvature and other parameters of the recessed structure to achieve the desired colloid performance.

[0068] like Figure 3 As shown, the colloid 1012 in this embodiment is a central concave structure and a central symmetrical structure. The concave structure can make the light emitted by the light-emitting module more divergent, thereby increasing the light-emitting angle range of the light-emitting module. Combined with multiple light-emitting chips, the light-emitting angle of a single light-emitting module can be larger and the light distribution can be more uniform.

[0069] In some optional implementations of this embodiment, such as Figure 4 As shown, each light-emitting module in the light-emitting module array 101 also includes an outer layer colloid 10121 and an inner layer colloid 10122, the refractive index of the outer layer colloid 10121 is greater than the refractive index of the inner layer colloid 10122, the inner layer colloid 10122 covers at least two light-emitting chips 1011 included in the light-emitting module, and the outer layer colloid 10121 covers the inner layer colloid 10122.

[0070] like Figure 4As shown, it shows a cross-sectional view of a light-emitting module including an outer layer colloid 10121 and an inner layer colloid 10122. The refractive index of the outer layer colloid 10121 is relatively large (for example, the refractive index is greater than 1.5). The high refractive index colloid can make the outgoing light produce a larger refraction angle, which is beneficial to increase the light-emitting angle range of the light-emitting module. The refractive index of the inner layer colloid 10122 is relatively small (for example, the refractive index is about 1.4). The low refractive index glue can reduce the reflection on the surface of the device, reduce the refraction angle, and improve the light transmittance of the device.

[0071] The inner layer colloid 10122 of this embodiment adopts a low refractive index colloid, which can solve the problem of low temperature resistance of high refractive index colloid and avoid the phenomenon of colloid cracking that is easy to occur in the high-power light-emitting module scenario. Since the low refractive index colloid can reduce the reflection of the surface, most of the light can be incident on the high refractive index colloid, and the high refractive index colloid further increases the refraction angle of the outgoing light, so that the outgoing angle range of the light-emitting module meets the requirements. Therefore, this embodiment combines the low refractive index colloid and the high refractive index colloid, which can make full use of the characteristics of the two refractive index colloids, improve the transmittance of light, increase the outgoing angle range of light, and reduce the risk of colloid cracking.

[0072] In some optional implementations of this embodiment, such as Figure 4 As shown, both the outer layer colloid 10121 and the inner layer colloid 10122 are centrally depressed structures.

[0073] In this embodiment, by setting both the outer colloid 10121 and the inner colloid 10122 as a central concave structure, the light emitted by the light-emitting chip can be diverged twice, thereby further improving the emission angle range of the light-emitting module.

[0074] In some optional implementations of this embodiment, such as Figure 5 As shown, an organic silicone layer 104 is disposed on the surface of the circuit board 102 .

[0075] The light emitted by the light-emitting chip will be reflected on the colloidal surface of the light-emitting module, and the light emitted by the light-emitting module will be reflected on the surface of the liquid crystal panel. After the reflected light is irradiated to the circuit board 102, the organic silicone layer arranged thereon has a higher refractive index, and the light irradiated to the circuit board 102 will be totally reflected, thereby enhancing the overall luminous intensity and overall lighting uniformity of the backlight panel, and further improving the luminous quality of the backlight panel.

[0076] In some optional implementations of this embodiment, such as Figure 5 As shown, a microlens array 105 is arranged on the organic silicone layer, and each microlens in the microlens array is doped with fluorescent powder, and the fluorescent powder is used to convert the colored light incident into the microlens into white light.

[0077] The above-mentioned phosphor can not only increase the refractive index of light, but also realize the conversion of part of blue light into white light, thereby converting the dark pattern generated between adjacent light-emitting chips into white light, and reducing the brightness difference between adjacent light-emitting chips. The doping concentration of the phosphor, as well as the shape, size, number and other characteristics of the microlens can be adaptively adjusted according to actual needs, so that the luminous efficiency and light conversion efficiency of the microlens array meet the requirements.

[0078] Optionally, materials with high reflectivity such as TiO2 and SiO2 may be added to the phosphor to improve the reflectivity of the microlens array.

[0079] In this embodiment, a microlens array doped with phosphor is arranged on the organic silicone layer on the circuit board, so that the light incident on the microlens array is scattered, light from more directions is obtained, and the light output efficiency of the backlight is improved. Light from different directions is incident on the microlens array and is scattered, resulting in scattered light in different directions. At the same time, the microlens array can also convert colored light into white light, thereby improving the overall light output uniformity of the backlight.

[0080] Figure 6 A flowchart of a backlight driving method provided in an embodiment of the present application, which can be applied to the light-emitting driving module in the above embodiments, includes:

[0081] Step 601, obtaining preset light-emitting module driving parameters.

[0082] The light-emitting module driving parameters may be determined according to the current light-emitting mode. As an example, the light-emitting module driving parameters may include data such as the brightness, color temperature, and coordinates of the display area of ​​the backlight panel.

[0083] Step 602: Based on the light-emitting module driving parameters, determine the target light-emitting chip currently being driven from at least two light-emitting chips included in each light-emitting module in the backlight panel.

[0084] The target light-emitting chip can be determined according to the light-emitting mode indicated by the light-emitting module driving parameter. One of the at least two light-emitting chips can be the target light-emitting chip, or multiple light-emitting chips can be the target light-emitting chip. As an example, if the light-emitting module driving parameter indicates that each of the at least two light-emitting chips is to emit light alternately, the light-emitting chip that is emitting light at the current moment is the target light-emitting chip, and after the light-emitting chip stops emitting light, the other light-emitting chip is the target light-emitting chip.

[0085] Step 603: Generate a driving signal corresponding to the target light-emitting chip based on the light-emitting module driving parameters, and send the driving signal to the target light-emitting chip.

[0086] The driving signal may be a current signal or a voltage signal, and the driving signal may control the brightness, timing and other characteristics of the target light-emitting chip.

[0087] The driving method of the backlight panel provided in the embodiment of the present application realizes more flexible control of the light-emitting characteristics of the backlight panel by individually sending a driving signal to each light-emitting chip included in the light-emitting module, which helps to improve the scene adaptability of the backlight panel.

[0088] In some optional implementations of this embodiment, the above step 603 may be performed as follows:

[0089] First, based on the light-emitting module driving parameters, the light-emitting intensity and light-emitting timing of the target light-emitting chip are determined.

[0090] The light-emitting module driving parameters may include information indicating the light-emitting intensity and the light-emitting timing, so that the light-emitting intensity and the light-emitting timing may be determined according to the driving parameters.

[0091] Then, based on the light emission intensity and the light emission timing, a driving signal corresponding to the target light emitting chip is generated.

[0092] As an example, if the light-emitting module driving parameter indicates that the current light-emitting mode is a high-brightness mode, the light-emitting intensity of the target light-emitting chip can be determined to be a preset first light-emitting intensity, and the light-emitting timing is continuous light-emitting. For another example, if the light-emitting module driving parameter indicates that the current light-emitting mode is a low-brightness mode, the light-emitting intensity of the target light-emitting chip can be determined to be a preset second light-emitting intensity, and the light-emitting timing is that each light-emitting chip emits light alternately. For another example, if the light-emitting wavelengths of the light-emitting chips included in each light-emitting module are different, the driving parameter can include the color temperature set by the user, and a corresponding driving signal is generated according to the color temperature.

[0093] This embodiment achieves more flexible control of each light-emitting chip included in the light-emitting module by determining the light-emitting intensity and light-emitting timing of the target light-emitting chip, which helps to improve the adaptability of the backlight panel to application scenarios and helps to reduce the power consumption of the backlight panel.

[0094] Optionally, the above-mentioned step of generating a driving signal corresponding to the target light-emitting chip based on the light-emitting intensity and the light-emitting timing may include the following steps:

[0095] If the first light-emitting mode is currently in use, a driving signal is sent alternately to each of the at least two light-emitting chips at a preset interval.

[0096] If the second light-emitting mode is currently in place, a driving signal is simultaneously sent to each of the at least two light-emitting chips, so that the at least two light-emitting chips emit light simultaneously.

[0097] The first light-emitting mode can be controlled by a pre-set control program. In the first light-emitting mode, each light-emitting chip of a single light-emitting module emits light alternately. In the second light-emitting mode, each light-emitting chip of a single light-emitting module emits light simultaneously, thereby increasing the light brightness of the area where the light-emitting module is located.

[0098] Optionally, the number and position of the light-emitting modules corresponding to the first light-emitting mode and the second light-emitting mode can be set, that is, all the light-emitting modules can be controlled to emit light according to the timing of the first light-emitting mode or the second light-emitting mode, or some light-emitting modules can be specifically controlled to emit light according to the timing of the first light-emitting mode or the second light-emitting mode, thereby improving the flexibility of the backlight panel brightness control.

[0099] By setting the first light-emitting mode and the second light-emitting mode, the light-emitting timing of the multiple light-emitting chips included in each light-emitting module can be flexibly controlled. In the first light-emitting mode, the light-emitting chips emit light alternately, which can reduce the light-emitting time of a single light-emitting chip and effectively increase the service life of the light-emitting chip. In the second mode, the light-emitting brightness of the light-emitting module can be effectively increased, thereby further expanding the scope of application of the backlight panel.

[0100] Figure 7 A schematic diagram of the structure of a display panel 700 provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, the display panel 700 specifically includes: a liquid crystal panel 701 and the backlight panel 100 described in the above embodiments. The light emitted by the light-emitting module on the backlight panel enters the liquid crystal panel, and the pixel units on the liquid crystal panel display corresponding colors.

[0101] The display panel provided in the embodiment of the present application improves the uniformity of the backlight panel's light emission by applying the above-mentioned backlight panel, which helps to further reduce the distance between the backlight panel and the liquid crystal panel. Each light-emitting chip in a single light-emitting module can be driven separately, thereby improving the flexibility of backlight panel brightness control and helping to improve the scene adaptability of the backlight panel.

[0102] Figure 8 A schematic diagram of the structure of a display device 800 provided in an embodiment of the present application is shown in FIG. Figure 8 As shown, the display device 800 includes the above Figure 7 The display panel 700 described in the illustrated embodiment. In addition, the display device 800 may further include a panel frame 801, a power module 802 and a data receiving module 803;

[0103] The display panel 700 is installed on the panel frame 801 .

[0104] The power supply end of the display panel 700 is connected to the power module 802 , and the signal receiving end of the display panel 700 is connected to the data receiving module 803 .

[0105] The power module 802 can provide the display panel 700 with the power required for operation, the data receiving module 803 can receive input data, and the display panel 700 drives the corresponding pixels to display the corresponding colors according to the received data.

[0106] In addition, the display device Figure 8 In addition to the parts shown, it may also include a memory for storing data and programs, a processor for running application programs, a data transmission bus, various data interfaces (such as a network interface, a user interface), etc.

[0107] The display device provided in the embodiment of the present application improves the uniformity of the backlight panel's light emission by applying the above-mentioned display panel, helps to further reduce the distance between the backlight panel and the liquid crystal panel, can make the thickness of the display device smaller, and improves the flexibility of backlight panel brightness control, which helps to expand the use scenarios of the display device.

[0108] The professionals should further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different devices to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0109] The steps of the algorithm described in conjunction with the embodiments disclosed herein may be implemented by hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0110] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0111] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A backlight panel, characterized in that: The backlight panel comprises: a light emitting module array, a circuit board and a light emitting driving module, the light emitting module array is arranged on the circuit board, and each light emitting module in the light emitting module array is connected to the light emitting driving module; Each light-emitting module in the light-emitting module array includes at least two light-emitting chips, and each of the at least two light-emitting chips is respectively connected to the light-emitting driving module to receive a driving signal from the light-emitting driving module.

2. The backlight panel according to claim 1, characterized in that: The difference between the length and the width of the light-emitting surface formed by the at least two light-emitting chips is less than or equal to a preset error threshold.

3. The backlight panel according to claim 1, characterized in that: Each of the at least two light-emitting chips is connected to the light-emitting driving module through a separately arranged circuit; The light-emitting driving module is used to send a driving signal to each of the at least two light-emitting chips according to a preset light-emitting intensity and light-emitting timing.

4. The backlight panel according to claim 3, characterized in that: The light-emitting driving module is used for: If the first light-emitting mode is currently in use, sending a driving signal to each of the at least two light-emitting chips alternately at a preset interval; If the second light-emitting mode is currently in place, a driving signal is simultaneously sent to each of the at least two light-emitting chips, so that the at least two light-emitting chips emit light simultaneously.

5. The backlight panel according to claim 3, characterized in that: Each of the at least two light-emitting chips has a different light-emitting wavelength; The light-emitting driving module is used for: According to the currently set color temperature, a target light-emitting chip is determined from the at least two light-emitting chips, and a driving signal corresponding to the color temperature is sent to the target light-emitting chip.

6. The backlight panel according to claim 1, characterized in that: Each light-emitting module in the light-emitting module array further includes an outer colloid and an inner colloid, the refractive index of the outer colloid is greater than the refractive index of the inner colloid, the inner colloid covers at least two light-emitting chips included in the light-emitting module, and the outer colloid covers the inner colloid.

7. A method for driving a backlight panel, characterized in that: include: Obtain preset light-emitting module driving parameters; Based on the light-emitting module driving parameters, determining a target light-emitting chip currently being driven from at least two light-emitting chips included in each light-emitting module in the backlight panel; Based on the light-emitting module driving parameters, a driving signal corresponding to the target light-emitting chip is generated, and the driving signal is sent to the target light-emitting chip.

8. The method according to claim 7, characterized in that The step of generating a driving signal corresponding to a target light-emitting chip based on the light-emitting module driving parameter includes: Based on the light-emitting module driving parameters, determining the light-emitting intensity and light-emitting timing of the target light-emitting chip; Based on the light emission intensity and the light emission timing, a driving signal corresponding to the target light emitting chip is generated.

9. A display panel, characterized in that: include: A liquid crystal panel and a backlight panel as claimed in any one of claims 1 to 6.

10. A display device, characterized in that: include: The display panel as claimed in claim 9.

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