Display module and control method therefor, and display device

Abstract

Embodiments of the present application provide a display module and a control method therefor, and a display device. The display module comprises an array substrate; a color film layer arranged on one side of the array substrate; and a light detection driving circuit arranged between the array substrate and the color film layer to detect at least one of a red light parameter, a green light parameter and a blue light parameter in ambient light around the display module through the color film layer. The influence of ambient light on the display effect of the display device can be reduced.

Description

Display module, control method thereof, and display device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 22, 2024, with application number 202410199732.1 and titled “Display module, control method thereof and display device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of display devices, and in particular relates to a display module, a control method thereof, and a display device. Background Art

[0003] In recent years, the display industry has focused on the contrast ratio of display devices. Contrast is crucial to visual quality. Generally, a higher contrast ratio yields a clearer image and more vivid colors. Conversely, a lower contrast ratio results in a grayish, hazy image.

[0004] Because the contrast ratio index in the past did not take the ambient light factor into consideration, if the ambient light is too bright, it is easy to cause reflections on the display device, affecting the user's viewing experience. Technical issues

[0005] Because the contrast ratio index in the past did not take the ambient light factor into consideration, if the ambient light is too bright, it is easy to cause reflections on the display device, affecting the user's viewing experience. Technical Solutions

[0006] The embodiments of the present application provide a display module, a control method thereof, and a display device, which can reduce the impact of ambient light on the display effect of the display device, thereby improving the user's viewing experience.

[0007] In a first aspect, an embodiment of the present application provides a display module, comprising:

[0008] array substrate;

[0009] A color filter layer is provided on one side of the array substrate;

[0010] The light detection driving circuit is arranged between the array substrate and the color filter layer to detect at least one of the red light parameter, the green light parameter and the blue light parameter in the ambient light around the display module through the color filter layer.

[0011] In a second aspect, an embodiment of the present application further provides a display device, comprising:

[0012] A display module, as described in any one of the above items;

[0013] The backlight module is arranged on one side of the display module and is used to provide light source for the display module.

[0014] In a third aspect, an embodiment of the present application further provides a method for controlling a display module as described in any one of the above items, comprising:

[0015] The light detection driving circuit is arranged between the array substrate and the color filter layer;

[0016] The light detection driving circuit is controlled to detect at least one of red light parameters, green light parameters, and blue light parameters in the ambient light around the display module through the color filter layer.

[0017] In a fourth aspect, an embodiment of the present application further provides a method for controlling a display module, comprising:

[0018] Acquiring at least one of a red light parameter, a green light parameter, and a blue light parameter in the ambient light around the display module;

[0019] At least one of the red light signal, the green light signal, and the blue light signal to be input to the plurality of pixel points is adjusted according to at least one of the red light parameter, the green light parameter, and the blue light parameter. Beneficial effects

[0020] In the display module, control method thereof, and display device of the embodiments of the present application, a light detection driving circuit is added between the array substrate and the color filter layer in the display module. The light detection driving circuit, combined with the filtering of ambient light by the color filter layer, can detect at least one of the red light parameters, green light parameters, and blue light parameters in the ambient light, thereby accurately compensating for the brightness of the backlight module of the display device, reducing the impact of ambient light on the display effect of the display device, and thereby improving the user's viewing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0022] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0023] FIG1 is a schematic structural diagram of a display device provided in an embodiment of the present application.

[0024] FIG2 is a schematic diagram of a first structure of a display module provided in an embodiment of the present application.

[0025] FIG3 is a second structural diagram of a display module provided in an embodiment of the present application.

[0026] FIG4 is a schematic diagram of a third structure of a display module provided in an embodiment of the present application.

[0027] FIG5 is a schematic structural diagram of a light detection driving circuit provided in an embodiment of the present application.

[0028] FIG6 is a schematic diagram of a first flow chart of a method for controlling a display module provided in an embodiment of the present application.

[0029] FIG. 7 is a second flow chart of the method for controlling a display module provided in an embodiment of the present application.

[0030] FIG8 is a third flow chart of the method for controlling a display module provided in an embodiment of the present application.

[0031] FIG9 is a schematic diagram of a scene of a display device, a viewer position, and an ambient light position provided in an embodiment of the present application.

[0032] Implementation Methods of the Application

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0034] In order to reduce the influence of ambient light on the display effect of a display device, an embodiment of the present application provides a display module, a control method thereof, and a display device, which will be described below with reference to the accompanying drawings.

[0035] Please refer to Figure 1, which is a schematic diagram of the structure of a display device provided in an embodiment of the present application. This embodiment of the present application provides a display device 1, which can be a display device such as a mobile phone, a television, a tablet, or a computer. The display device 1 can also be a device with a display such as an in-vehicle television or in-vehicle video equipment, without specific limitation herein.

[0036] Among them, the display type of the display device 1 of the embodiment of the present application can be a liquid crystal display (LCD) or an organic light-emitting diode (OLED). The embodiment of the present application uses the liquid crystal display type as an example for explanation, and should not be understood as limiting the display type of the display device 1. The liquid crystal display is an active matrix liquid crystal display driven by thin film transistors. Its working principle is that under the action of an electric field, the arrangement direction of liquid crystal molecules changes, so that the transmittance of the external light source changes, that is, modulation is performed to complete the conversion between electricity and light; then, by using different excitations of the R, G, and B primary color signals, through the red, green, and blue primary color filters, color reproduction in the time domain and spatial domain is completed. Exemplarily, the display device 1 includes a display module 100 and a backlight module 200. The display module 100 and the backlight module 200 can be stacked. The backlight module 200 is used to provide a light source for the display module 100. The display module 100 and the backlight module 200 cooperate to realize image display.

[0037] 1 and FIG2 and FIG3 , FIG2 is a schematic diagram of a first structural embodiment of a display module provided in accordance with an embodiment of the present application, and FIG3 is a schematic diagram of a second structural embodiment of a display module provided in accordance with an embodiment of the present application. Display module 100 includes an array substrate 110, a color filter substrate 120, and a light detection drive circuit 130.

[0038] The array substrate 110 includes a glass substrate 111 and a display driver circuit 112 disposed on the glass substrate 111. The display driver circuit 112 is composed of a plurality of thin film transistors arranged in an array. Therefore, the display driver circuit 112 and the glass substrate 111 are referred to as the array substrate 110. Exemplarily, the array substrate 110 is disposed on one side of the backlight module 200. Specifically, the glass substrate 111 is disposed on one side of the backlight module 200, and the display driver circuit 112 is disposed on the side of the glass substrate 111 facing away from the backlight module 200.

[0039] The color filter substrate 120 includes a color filter glass 121 and a color filter layer 122. The color filter glass 121 provides support for the color filter layer 122. The color filter layer 122 is disposed on the side of the array substrate 110 facing away from the backlight module 200. The color filter layer 122 is also called a color filter. A color filter is an optical filter that accurately selects a narrow range of wavelengths to pass through while reflecting or absorbing light waves in other bands. The color filter copper layer is installed in front of the light source, allowing the human eye to receive saturated light of a specific color.

[0040] The light detection driving circuit 130 is disposed between the array substrate 110 and the color filter layer 122 to detect at least one of the red light parameters, green light parameters, and blue light parameters in the environment surrounding the display device 1 through the color filter layer 122. This can provide a parameter basis for adjusting the image display of the display device 1, such as preventing reflections, to improve the display effect of the display device 1.

[0041] It should be noted that, for extracting the red light parameters, green light parameters and blue light parameters in the ambient light, the color filter layer 122 is needed to implement light filtering. Therefore, the light detection driving circuit 130 needs to be disposed below the color filter layer 122 .

[0042] The display module 100 also includes a liquid crystal layer 140. There are at least two ways to configure the color filter layer 122 in the display module 100: COA (Color Filter On Array) and non-COA. The non-COA display module 100 has the following structure: as shown in FIG2 , the color filter layer 122 is disposed on the color filter glass 121, serving as the color filter substrate 120. The color filter substrate 120 and the array substrate 110 sandwich the liquid crystal layer. The COA structure, as shown in FIG3 , places the color filter layer 122 on the array substrate 110, which can reduce the coupling between the pixel electrodes and the metal traces and improve signal delay on the metal traces. Accordingly, in a COA-type display module 100, the light detection drive circuit 130 is adjacent to the color filter layer 122 and is located between the color filter layer 122 and the glass substrate 111. In a non-COA display module 100, the light detection driving circuit 130 is adjacent to the liquid crystal layer 140, and the color filter layer 122 is located on the side of the liquid crystal layer 140 facing away from the light detection driving circuit 130. Regardless of the structure of the display module 100, the light detection driving circuit 130 of the embodiment of the present application can reuse the color filter layer 122 to filter out red, green, and blue light parameters from the ambient light, thus saving device configuration and reducing manufacturing costs.

[0043] In the display module 100 provided in the embodiment of the present application, by adding a light detection driving circuit 130 between the array substrate 110 and the color filter layer 122 in the display module 100, the light detection driving circuit 130, in combination with the filtering of ambient light by the color filter layer 122, can detect at least one of the red light parameter, the green light parameter, and the blue light parameter in the ambient light, thereby accurately compensating the brightness of the backlight module 200 of the display device 1, reducing the impact of ambient light on the display effect of the display device 1, and thereby improving the user's viewing experience.

[0044] For example, please refer to FIG4 in conjunction with FIG1 to FIG3 . FIG4 is a schematic diagram of the third structure of the display module provided in an embodiment of the present application. The color filter layer 122 includes a plurality of color filter units 1220, which can also be referred to as sub-pixels. The light detection drive circuit 130 includes a plurality of light detection units 131, each corresponding to at least one color filter unit 1220, to filter the input ambient light, thereby filtering and detecting the red light parameters, green light parameters, and blue light parameters in the ambient light. The correspondence between each light detection unit 131 and the color filter unit 1220, i.e., the sub-pixel, can be set based on detection accuracy. In this case, one light detection unit 131 can correspond to one sub-pixel, which provides higher detection accuracy for external ambient light. Alternatively, one light detection unit 131 can correspond to one backlight sub-zone, meaning that a light detection unit 131 does not need to correspond one-to-one with a sub-pixel. The light detection unit 131 is responsible for detecting ambient light in a specific area. One light detection unit 131 may also correspond to one sub-pixel and a value within a backlight partition range, which is not specifically limited here.

[0045] Among them, the red light parameter, the green light parameter, and the blue light parameter can correspond to the red light intensity, the green light intensity, and the blue light intensity, that is, the ratio of the red light signal, the ratio of the green light signal, and the ratio of the blue light signal to be input to the multiple pixel points are adjusted according to the red light intensity, the green light intensity, and the blue light intensity in the ambient light. It should be noted that during detection, at least one of the red light intensity, the green light intensity, and the blue light intensity in the ambient light can be detected, and correspondingly, the ratio of the red light signal to be input to the pixel point is adjusted according to the red light intensity, the ratio of the green light signal to be input to the pixel point is adjusted according to the green light intensity, and the ratio of the blue light signal to be input to the pixel point is adjusted according to the blue light intensity, so that at least one of the three pixel signals can be adjusted to reduce the impact of ambient light on the display image.

[0046] Among them, the red light parameter, green light parameter and blue light parameter are positively correlated with the red light signal, green light signal and blue light signal respectively. That is to say, if the red light intensity in the ambient light is detected to be larger, the proportion of the red light signal to be input to the pixel point will increase; if the green light intensity in the ambient light is detected to be larger, the proportion of the green light signal to be input to the pixel point will increase; if the blue light intensity in the ambient light is detected to be larger, the proportion of the blue light signal to be input to the pixel point will increase.

[0047] It should be noted that the light detection unit 131 can be composed of a thin-film transistor. Due to the photosensitivity of semiconductors, when exposed to external light, the voltage-current characteristics of the thin-film transistor change. Based on this change, a thin-film transistor made of semiconductor material can be used as a light detection device. The structure of the light detection driving circuit 130 is described below.

[0048] Please refer to Figures 1 to 4 and Figure 5, which is a schematic diagram of the structure of a light detection drive circuit provided in an embodiment of the present application. Exemplarily, the light detection drive circuit 130 further includes a scan driver 132, a signal detection line 133, and a voltage terminal Vbias. The corresponding relationship between a light detection unit 131 and the color filter unit 1220 is manifested in the following circuit connections: each light detection unit 131 includes a gate G, a source S, and a drain D. Multiple light detection units 131 can be arranged in M ​​rows and N columns, where M and N are both integers greater than 0. Alternatively, multiple light detection units 131 can be arranged in an array to facilitate connection and control of the multiple light detection units 131.

[0049] The source S of each column of light detection units 131 is commonly connected to a scan driver 132, the drain D of each column of light detection units 131 is commonly connected to a voltage terminal Vbias, and the gate G of each at least one light detection unit 131 is connected to a signal detection line 133. It will be understood that the voltage terminal Vbias is used to provide a stable voltage for each column of light detection units 131, the scan driver 132 is used to control the activation frequency of the light detection units 131, and the signal detection line 133 is used to transmit detected voltage or current signals.

[0050] The gate G of at least one photodetection unit 131 is connected to a signal detection line 133. This means that each photodetection unit 131 corresponds to at least one sub-pixel. In some embodiments, the gates G of every three rows of photodetection units 131 are connected to a signal detection line 133. In other words, each photodetection unit 131 shares one scan driver 132 and three signal detection lines 133. This reduces the number of signal detection lines 133, thereby reducing design complexity and production costs.

[0051] Exemplarily, the scan driver 132 is used to detect red, green, and blue light parameters in the ambient light based on the current or voltage of each light detection unit 131. The choice between current detection and voltage detection depends primarily on factors such as design resources, application deviations of the back-end circuitry, and calibration difficulty. The light detection units 131 can be either n-type or p-type. Of course, the light detection driver circuit 130 can also utilize a hybrid of n-type and p-type circuits to achieve different detection accuracy requirements.

[0052] It should be noted that there are at least two possible arrangements for the light detection driver circuit 130 and the display driver circuit 112. One approach is to place the light detection driver circuit 130 and the display driver circuit 112 on the same layer (not shown in the figure), allowing the light detection driver circuit 130 and the display driver circuit 112 to be manufactured using the same process, simplifying the manufacturing process. The other approach is to stack the light detection driver circuit 130 and the display driver circuit 112, thereby saving space in the frame and facilitating the design of a narrow-frame display device 1.

[0053] In the display module 100 and display device 1 provided in the embodiments of the present application, by adding a light detection driving circuit 130 between the array substrate 110 and the color filter layer 122 in the display module 100, the light detection driving circuit 130, in combination with the filtering of ambient light by the color filter layer 122, can detect at least one of the red light parameter, the green light parameter, and the blue light parameter in the ambient light, thereby accurately compensating the brightness of the backlight module 200 of the display device 1, reducing the impact of ambient light on the display effect of the display device 1, and thereby improving the user's viewing experience.

[0054] In order to more clearly illustrate that the display device 1 according to the embodiment of the present application is used to reduce the influence of ambient light on the display effect, the following description will be made from the perspective of a control method of the display device.

[0055] Please refer to FIG6 , which is a first flow chart of a method for controlling a display module provided in an embodiment of the present application. This embodiment of the present application also provides a method for controlling a display module, wherein the display device and the display module are as shown in FIG1 to FIG5 and the above description, and are not further described here. The method for controlling a display module includes:

[0056] 201. Dispose a light detection driving circuit between the array substrate and the color filter layer.

[0057] The light detection drive circuit utilizes the photosensitivity of semiconductors to detect ambient light, resulting in a simple structure and high sensitivity. Placing the light detection drive circuit between the array substrate and the color filter layer—that is, placing the light detection drive circuit below the color filter layer—reuses the color filter layer to perform color separation of ambient light, thereby obtaining at least one of the red, green, and blue light parameters illuminating the area.

[0058] 202. Control the light detection driving circuit to detect at least one of red light parameters, green light parameters, and blue light parameters in the ambient light around the display module through the color filter layer.

[0059] The light detection drive circuit is controlled to detect at least one of the red light parameter, the green light parameter, and the blue light parameter in the ambient light surrounding the display device through the color filter layer, such as at least one of the red light intensity, the green light intensity, and the blue light intensity. Preferably, the red light intensity, the green light intensity, and the blue light intensity are all detected, so that corresponding adjustments can be made to the display device to improve the display effect of the display device. For example, targeted adjustments can be made to the red light signal, the green light signal, and the blue light signal to be input to the pixel. For example, if the red light intensity in the ambient light is high, the proportion of the red light signal to be input to the pixel is increased; if the green light intensity in the ambient light is high, the proportion of the green light signal to be input to the pixel is increased; and if the blue light intensity in the ambient light is high, the proportion of the blue light signal to be input to the pixel is increased. In this way, reflection adjustment can be achieved in a certain area or all areas of the display device, thereby improving the user's visual experience.

[0060] For example, by acquiring the red, green, and blue light intensities, it's possible to accurately determine if backlight compensation is needed, or even compensate for the displayed signal, achieving accurate brightness and color. While placing the light detection drive circuit below the color filter layer may affect the device's transmittance, the sacrificed transmittance is offset by the ability of the light-emitting chips in the backlight module to achieve localized high brightness, known as backlight zone control.

[0061] In the control method of the display module provided in the embodiment of the present application, by adding a light detection driving circuit between the array substrate and the color filter layer in the display module, the light detection driving circuit, combined with the filtering of the ambient light by the color filter layer, can detect at least one of the red light parameters, green light parameters, and blue light parameters in the ambient light, thereby accurately compensating the brightness of the backlight module of the display device, reducing the impact of ambient light on the display effect of the display device, and thus improving the user's viewing experience. Please refer to Figure 7, which is a second flow chart of the control method of the display module provided in the embodiment of the present application. The embodiment of the present application also provides a control method of the display module, including:

[0062] 301. Obtain at least one of a red light parameter, a green light parameter, and a blue light parameter in ambient light around a display module.

[0063] Display devices can experience glare due to excessive ambient light. Existing solutions typically employ low-reflection, anti-glare polarizers to reduce reflected light intensity, or external ambient light sensors to control overall light intensity to improve display quality. However, due to the constant fluctuations in ambient light, these solutions cannot fully and accurately address glare caused by excessive ambient light.

[0064] Therefore, the embodiment of the present application uses at least one of the red light parameters, green light parameters and blue light parameters in the ambient light to adjust the display parameters of the display module in the display device, which can be accurately regulated to achieve accurate compensation for the ambient light and improve the display effect.

[0065] There are multiple ways to obtain at least one of the red, green, and blue light parameters in the environment surrounding the display module. One method is to use semiconductor materials to absorb light and, in conjunction with a color filter layer, filter or separate the three colors of light to detect red light parameters such as red light intensity, green light parameters such as green light intensity, and blue light parameters such as blue light intensity in the ambient light, thereby providing basic parameters for adjusting the image display of the display device. Another method is to use three semiconductor materials to absorb and differentiate ambient light, without the need for a color filter layer, and with higher detection sensitivity.

[0066] 302. Adjust at least one of the red light signal, the green light signal, and the blue light signal to be input to the plurality of pixels according to at least one of the red light parameter, the green light parameter, and the blue light parameter.

[0067] According to at least one of the detected red light parameters such as red light intensity, green light parameters such as green light intensity and blue light parameters such as blue light intensity, at least one of the red light signal, green light signal and blue light signal to be input to multiple pixel points is adjusted to achieve precise control of the red, green and blue signals, thereby reducing the impact of ambient light on the display effect of the display device.

[0068] Among them, the red light signal is adjusted according to the red light parameter, and the red light parameter is positively correlated with the red light signal, that is, when the red light parameter in the ambient light is large, such as when the red light intensity is high, the proportion of the red light signal to be input to the pixel point is increased. The green light signal is adjusted according to the green light parameter, and the green light parameter is positively correlated with the green light signal, that is, when the green light parameter in the ambient light is large, such as when the green light intensity is high, the proportion of the green light signal to be input to the pixel point is increased. The blue light signal is adjusted according to the blue light parameter, and the blue light parameter is positively correlated with the blue light signal, that is, when the blue light parameter in the ambient light is large, such as when the blue light intensity is high, the proportion of the blue light signal to be input to the pixel point is increased. In this way, the display screen of the display device can be adjusted to reduce the impact of ambient light on the display effect. That is, considering the impact of ambient light on the contrast of the display device, the display screen of the display device is compensated so that the display effect seen by the viewer can be close to the effect when there is no ambient light.

[0069] In the control method of the display module provided in the embodiment of the present application, by detecting at least one of the red light parameters, green light parameters and blue light parameters in the ambient light around the display module, at least one of the red light signal, green light signal and blue light signal in the pixel point can be adjusted in a targeted manner, thereby reducing the impact of ambient light on display effects such as reflections, and improving the user viewing experience.

[0070] Please refer to FIG8 , which is a third flow chart of a method for controlling a display module according to an embodiment of the present application. The present application also provides a method for controlling a display module, including:

[0071] 401. Obtain at least one of red light parameters, green light parameters, and blue light parameters in ambient light around a display module.

[0072] Display devices can experience glare due to excessive ambient light. Existing solutions typically employ low-reflection, anti-glare polarizers to reduce reflected light intensity, or external ambient light sensors to control overall light intensity to improve display quality. However, due to the constant fluctuations in ambient light, these solutions cannot fully and accurately address glare caused by excessive ambient light.

[0073] Therefore, the embodiment of the present application uses at least one of the red light parameters, green light parameters and blue light parameters in the ambient light to adjust the display parameters in the display device, which can be precisely controlled to achieve precise compensation for the ambient light and improve the display effect. Among them, there are multiple ways to obtain at least one of the red light parameters, green light parameters and blue light parameters in the environment surrounding the display device or display module. One way is to use semiconductor materials to absorb light, and at the same time cooperate with the color filter layer to filter the three colors of light or perform color separation to detect red light parameters such as red light intensity, green light parameters such as green light intensity and blue light parameters such as blue light intensity in the ambient light, thereby serving as basic parameters for adjusting the screen display of the display device. Another way is to use three semiconductor materials to absorb and distinguish ambient light, without the need for a color filter layer, and with a higher detection sensitivity.

[0074] It should be noted that when detecting the red, green, and blue light parameters in the ambient light, the brightness of the backlight module can be low. This is because when detecting ambient light, the liquid crystal layer must pass a signal to open all its liquid crystals so that external ambient light can enter the detection device, such as the light detection unit area. If the liquid crystal is closed, the signal strength may be insufficient and calibration cannot be achieved; or if detection is performed as the picture changes, the calibration detection algorithm will be more complicated. Calibration can be achieved but with greater difficulty. The detected data will be transmitted to the back-end circuit for intensity calculation, and then it will be converted into a compensation factor to be superimposed with the display signal or backlight signal to compensate for the impact of the display ambient light.

[0075] For example, when the ambient light detected by a detection device, such as a light detection unit, does not reach a level sufficient to enable the function of adjusting the display image, the display device or display module transmits according to a traditional signal transmission architecture. When detection is enabled, since the ambient light in most scenes does not fluctuate in real time, the detection frequency can be relatively low. For example, a frame rate of at most 1 frame per 30 seconds is used to detect at least one of the red light parameter, green light parameter, and blue light parameter in the ambient light surrounding the display device or display module. In other words, the detection can be designed to be performed for 1 to 2 frames per minute or even longer. This does not significantly affect daily image viewing, and the detection frequency can be reduced, saving energy.

[0076] 402. Obtain the position parameters between the user and the display module.

[0077] 403. Determine a target area of ​​the display module to be adjusted according to the position parameter.

[0078] Regarding steps 402 and 403:

[0079] Many current display devices utilize a zoned light control architecture, controlling the display screen and backlight units in different zones, facilitating image adjustment by zone. Sub-millimeter LED backlight units (BLUs) in the backlight module enable zoned light control, improving halo effects and achieving high brightness.

[0080] The image in the display device is affected by ambient light not in the entire display area. Based on the zoned light control, targeted adjustments to the reflective area can reduce the area of ​​image adjustment in the display device, reduce the difficulty of adjustment, and improve the display effect.

[0081] Therefore, the position parameters between the user and the display module are critical for determining the reflective area. The method for obtaining the position parameters between the user and the display module can be: using the camera in the display device or display module, that is, multiplexing the camera in the display device or display module, to obtain the precise position of the viewer; or using millimeter wave radar to detect the position parameters between the user and the display device or display module. The image area of ​​the display device or display module that is prone to reflection is calculated as the target area through the distance and angle between the viewer and the display device or display module, and a mapping table of the position parameters between the user and the display device or display module and the target area is prepared to facilitate data compensation for scene partitioning.

[0082] Exemplarily, before identifying the user's location, external ambient light irradiates the display module. The orientation, color, and intensity of at least one of the red light signal, green light signal, and blue light signal of the ambient light can be identified by means of a light detection circuit. Then, the viewer's location is identified by a camera or a millimeter-wave radar. For the ambient light orientation and the viewer's location, the correction gain coefficient and interpolation method are calculated, and then the correction compensation parameters are obtained to facilitate data compensation for scene partitioning. The data compensation is as follows:

[0083] Loutput(R,G,B) = Linput(R,G,B) × Csensing(CR,CG,CB,PHuman).

[0084] Among them, Loutput(R,G,B) is the RGB signal finally output to each pixel point;

[0085] Linput(R,G,B) is the RGB signal originally to be output to each pixel point;

[0086] Csensing(CR,CG,CB,PHuman) is the compensation correction parameter, where CR, CG, and CB are the red, green, and blue correction parameters corresponding to the current pixel signal, and PHuman is the viewing position corresponding to the current user.

[0087] Please refer to FIG. 9. FIG. 9 is a schematic diagram of the scene of the display device, viewer location, and ambient light location provided by the embodiment of the present application. When the ambient light irradiates the left side of the screen at a 45° angle from the right side of the display device, if the viewer is in position 3, the ambient light is directly reflected out without entering the human eye, and only the diffuse reflection effect affects the viewer's perception. At this time, the correction gain coefficient is set to a. When the ambient light position remains unchanged, if the viewer is in position 2, it may be affected by diffuse reflection and partial direct reflection, resulting in an impact on the viewing experience. At this time, the correction gain coefficient is set to b. The visual effects of the ambient light on the viewers in position 2 and position 3 can be fitted by means of a multi-point interpolation algorithm, where a < b, and the correction gain parameter × [Rs,Gs,Bs] = Csensing. The target area of the display device or display module to be adjusted is determined according to the position parameters. Please continue to refer to FIG. 9. The display module or the display screen is irradiated by ambient light, and different degrees of ambient light contrast interference phenomena occur. The light source position direction can be identified by the light detection array algorithm. The viewer's position is identified by a camera or a millimeter-wave radar. Different numerical compensations are performed for viewers in different positions, that is, the area of the display device or display module that is prone to reflection is determined according to the position parameters, so as to facilitate targeted adjustment.

[0088] The number of people viewing the same display device simultaneously can be greater than or equal to one. The determination of a target area for one person can refer to the above description. If the number of simultaneous viewers exceeds one, it is necessary to simultaneously detect the position parameters between multiple people and the display device to determine multiple target areas. These multiple target areas may overlap. Calculation is then performed to determine the combined target area to be adjusted, and then the zoned backlight is adjusted to adjust the display device image and reduce the impact of ambient light on the display effect.

[0089] 404. Adjust at least one of the red light signal, the green light signal, and the blue light signal of the pixel point in the target area according to at least one of the red light parameter, the green light parameter, and the blue light parameter.

[0090] According to at least one of the detected red light parameters such as red light intensity, green light parameters such as green light intensity and blue light parameters such as blue light intensity, at least one of the red light signal, green light signal and blue light signal to be input to multiple pixel points in the target area is adjusted to achieve precise control of the red, green and blue signals in the target area, thereby reducing the impact of ambient light on the display effect of the display device.

[0091] The embodiment of the present application not only considers the impact of individual parameters such as red light parameters, green light parameters, and blue light parameters in the ambient light on the display effect of the display device, but also comprehensively considers the position parameters between the viewer and the display device, thereby performing zoning control on the target area that is prone to reflection, which can improve the accuracy of control of the display device.

[0092] Among them, the red light signal is adjusted according to the red light parameter, and the red light parameter is positively correlated with the red light signal, that is, when the red light parameter in the ambient light is large, such as when the red light intensity is high, the proportion of the red light signal to be input to the pixel points in the target area is increased. The green light signal is adjusted according to the green light parameter, and the green light parameter is positively correlated with the green light signal, that is, when the green light parameter in the ambient light is large, such as when the green light intensity is high, the proportion of the green light signal to be input to the pixel points in the target area is increased. The blue light signal is adjusted according to the blue light parameter, and the blue light parameter is positively correlated with the blue light signal, that is, when the blue light parameter in the ambient light is large, such as when the blue light intensity is high, the proportion of the blue light signal to be input to the pixel points in the target area is increased. In this way, the display screen of the display device can be adjusted to reduce the impact of ambient light on the display effect. That is, considering the impact of ambient light on the contrast of the display device, the display screen of the display device is compensated so that the display effect seen by the viewer can be close to the effect when there is no ambient light.

[0093] In the control method of the display module provided in the embodiment of the present application, by detecting at least one of the red light parameters, green light parameters and blue light parameters in the ambient light around the display device or the display module, and detecting the position parameters between the user and the display device or the display module, a target area of ​​the display area where reflection is prone to occur can be determined, and at least one of the red light signal, green light signal and blue light signal in the pixel points in the target area can be adjusted in a targeted manner to reduce the influence of ambient light on display effects such as reflection, without having to adjust the entire display area of ​​the entire display device, which can reduce the difficulty of picture adjustment and improve the user viewing experience.

[0094] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0095] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0096] The display module, control method thereof, and display device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display module, wherein: include: an array substrate; A color filter layer is provided on one side of the array substrate; The light detection driving circuit is arranged between the array substrate and the color filter layer to detect at least one of the red light parameter, the green light parameter and the blue light parameter in the ambient light around the display module through the color filter layer.

2. The display module according to claim 1, wherein: The color filter layer includes a plurality of color filter units, the light detection driving circuit includes a plurality of light detection units, and each of the light detection units is disposed corresponding to at least one color filter unit to filter input ambient light.

3. The display module according to claim 2, wherein: The light detection driving circuit further includes a scanning driver, a signal detection line and a voltage terminal; Each of the light detection units includes a gate, a source, and a drain. The multiple light detection units are arranged in M ​​rows and N columns, where M and N are integers greater than 0. The sources of the light detection units in each column are commonly connected to the scan driver, the drains of the light detection units in each column are commonly connected to the voltage terminal, and the gate of at least one light detection unit is connected to the signal detection line.

4. The display module according to claim 3, wherein: The gates of every three rows of the light detection units are connected to the signal detection line.

5. The display module according to claim 3, wherein: The scan driver is used to detect red light parameters, green light parameters and blue light parameters in the ambient light according to the current or voltage of each of the light detection units.

6. The display module according to claim 1, wherein: The array substrate includes a glass substrate and a display driving circuit. The display driving circuit is arranged on a side of the glass substrate facing the color filter layer. The light detection driving circuit is arranged on the same layer as the display driving circuit.

7. The display module according to claim 6, wherein: The light detection driving circuit is adjacent to the color filter layer, and the light detection driving circuit is arranged between the color filter layer and the glass substrate.

8. The display module according to claim 6, wherein: The display module further includes a liquid crystal layer. The light detection driving circuit is adjacent to the liquid crystal layer. The color filter layer is arranged on a side of the liquid crystal layer away from the light detection driving circuit.

9. The display module according to claim 1, wherein: The array substrate includes a glass substrate and a display driving circuit. The display driving circuit is arranged on a side of the glass substrate facing the color filter layer. The light detection driving circuit and the display driving circuit are stacked.

10. A display device, wherein: include: Display module, including: array substrate; A color filter layer is provided on one side of the array substrate; a light detection driving circuit, disposed between the array substrate and the color filter layer, to detect at least one of red light parameters, green light parameters, and blue light parameters in the ambient light surrounding the display module through the color filter layer; The backlight module is arranged on one side of the display module and is used to provide light source for the display module.

11. The display device according to claim 10, wherein: The color filter layer includes a plurality of color filter units, the light detection driving circuit includes a plurality of light detection units, and each of the light detection units is disposed corresponding to at least one color filter unit to filter input ambient light.

12. The display device according to claim 11, wherein The light detection driving circuit further includes a scanning driver, a signal detection line and a voltage terminal; Each of the light detection units includes a gate, a source, and a drain. The multiple light detection units are arranged in M ​​rows and N columns, where M and N are integers greater than 0. The sources of the light detection units in each column are commonly connected to the scan driver, the drains of the light detection units in each column are commonly connected to the voltage terminal, and the gate of at least one light detection unit is connected to the signal detection line.

13. The display device according to claim 12, wherein: The gates of every three rows of the light detection units are connected to the signal detection line.

14. A control method for a display module according to claim 1, wherein: include: The light detection driving circuit is arranged between the array substrate and the color filter layer; The light detection driving circuit is controlled to detect at least one of red light parameters, green light parameters, and blue light parameters in the ambient light around the display module through the color filter layer.

15. A method for controlling a display module, wherein: include: Acquiring at least one of a red light parameter, a green light parameter, and a blue light parameter in the ambient light around the display module; At least one of the red light signal, the green light signal, and the blue light signal to be input to the plurality of pixel points is adjusted according to at least one of the red light parameter, the green light parameter, and the blue light parameter.

16. The control method according to claim 15, wherein: The red light parameter, the green light parameter, and the blue light parameter are positively correlated with the red light signal, the green light signal, and the blue light signal, respectively.

17. The control method according to claim 15, wherein: The control method further includes: obtaining position parameters between the user and the display module; determining a target area of ​​the display module to be adjusted according to the position parameter; At least one of the red light signal, the green light signal, and the blue light signal of the pixel point within the target area is adjusted according to at least one of the red light parameter, the green light parameter, and the blue light parameter.

18. The control method according to claim 17, wherein: The step of obtaining the position parameters of the user and the display module includes: The position parameters between the user and the display module are obtained using a camera in the display module or using a radar.

19. The control method according to claim 15, wherein: Before acquiring at least one of the red light parameter, the green light parameter, and the blue light parameter in the ambient light around the display module, the control method further includes: Reduce the brightness of the backlight module in the display device.

20. The control method according to claim 19, wherein: The obtaining of at least one of a red light parameter, a green light parameter, and a blue light parameter in the ambient light around the display module includes: At least one of the red light parameter, the green light parameter, and the blue light parameter in the ambient light around the display module is detected using a frame rate of at most 1 frame / 30 seconds.

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