Method for driving a light source module, light-emitting device, display device, and display system

Abstract

A driving method for a light source module used in a light emitting device, the light emitting device including a driving unit, a conversion unit, a compensation correction unit, and the light source module, the driving unit outputs a light source driving signal based on a source, the conversion unit is connected to the driving unit and the light source module, and the light source driving signal is used to drive a plurality of light emitting areas corresponding to a light emitting diode module of the light source module, the driving method for the light source module including: the conversion unit uses the compensation correction unit to convert the light source driving signal into a plurality of modulated light source driving signals to drive each light emitting area corresponding to the light emitting diode module.

Description

Technical Field

[0001] The present invention relates to a driving method of a light source module, a light emitting device, a display device, and a display system, and particularly relates to a driving method of a light source module, a light emitting device, a display device, and a display system capable of adjusting the non-uniform characteristics of light emitting diodes.

Background Art

[0002] Liquid crystal displays are widely applied to electronic products such as flat televisions, computer devices, mobile phones, etc. A conventional liquid crystal display generally includes a liquid crystal panel, a control chip group, a driving chip group, and a backlight module. The control chip group is for converting or processing video data, the driving chip group is for outputting corresponding voltage signals to the liquid crystal panel, and the backlight module generally realizes a light board by light emitting diodes (LEDs) and achieves a display effect as a light source of the liquid crystal panel.

[0003] In order to save the energy of a liquid crystal display and increase the video contrast of the liquid crystal display, a conventional liquid crystal display generally adopts a local dimming technology to turn on different backlights corresponding to different display areas on the liquid crystal panel in the liquid crystal display at different luminances based on video data. For example, when the video in a display area is bright and the video in other display areas is dark in the video data, according to the local dimming technology, the light emitting diodes in the display area are controlled to be turned on with a bright backlight luminance, and the backlights in the other display areas are turned on with a dark backlight luminance. Therefore, compared with the normal operation of turning on all backlights with the maximum backlight luminance, the local dimming technology can save power consumption.

[0004] Area dimming technology can be applied not only to the field of liquid crystal display technology but also to general lighting fixtures. It can accommodate different lighting areas through area-controlled light, eliminating the need to install multiple types of lighting fixtures with different forms or functions to accommodate different lighting areas.

[0005] Generally, conventional area dimming technology is based on one assumption: that the output current of each light-emitting region of a light board is the same, and that the brightness of each light-emitting region is the same with the same current. However, in reality, the output current of conventional light boards is affected by differences in the recipe characteristics of the drive chip, the circuit elements, or the layout of the circuit elements, and furthermore, the brightness of each light-emitting region becomes non-uniform with the same current. In this case, it is difficult to achieve the desired area brightness in each light-emitting region after area dimming, and therefore, improvements were needed in conventional technology. [Overview of the Initiative]

[0006] Therefore, the present invention provides a method for driving a light source module, a light-emitting device, a display device, and a display system in order to improve the non-uniformity characteristics of the brightness of each light-emitting region at the same current.

[0007] Embodiments of the present invention provide a method for driving a light source module used in a light-emitting device, the light-emitting device comprising a drive unit, a conversion unit, a compensation correction unit, and the light source module, wherein the drive unit outputs a light source drive signal based on a source, the conversion unit is connected to the drive unit and the light source module, and the light source drive signal is used to drive a plurality of light-emitting regions corresponding to the light-emitting diode module of the light source module, and the method for driving the light source module includes the conversion unit using the compensation correction unit to convert the light source drive signal into a plurality of modulated light source drive signals to drive each light-emitting region corresponding to the light-emitting diode module.

[0008] Embodiments of the present invention provide a light-emitting device that includes a drive unit for outputting a light source drive signal based on a source, a light source module including a light-emitting diode module, a conversion unit connected to the drive unit and the light source module, and a compensation correction unit connected to the conversion unit, wherein the light source drive signal is used to drive a plurality of light-emitting regions of the light source module corresponding to the light-emitting diode module, and the conversion unit uses the compensation correction unit to convert the light source drive signal into a plurality of modulated light source drive signals to drive each light-emitting region corresponding to the light-emitting diode module.

[0009] Embodiments of the present invention further provide a display device comprising: a liquid crystal display panel; a drive unit connected to the liquid crystal display panel and outputting a video signal and a backlight drive signal for driving the liquid crystal display panel based on a video source to generate a corresponding image; a backlight module including a light-emitting diode module; a conversion unit connected to the drive unit and the backlight module; and a compensation correction unit connected to the conversion unit, wherein the backlight drive signal is used to drive a plurality of light-emitting regions of the backlight module corresponding to the light-emitting diode module, and the conversion unit uses the compensation correction unit to convert the backlight drive signal into a plurality of modulated backlight drive signals to drive each light-emitting region corresponding to the light-emitting diode module.

[0010] Embodiments of the present invention provide a display system including a display device and a video source generation device, wherein the display device includes a drive unit, a backlight module and a liquid crystal display panel, the backlight module includes a light-emitting diode module, the video source generation device includes a video processor, a conversion unit and a compensation correction unit, the video processor outputs a video signal and a backlight drive signal based on a video source, the conversion unit is connected to the video processor, the compensation correction unit is connected to the conversion unit, the conversion unit uses the compensation correction unit to convert the backlight drive signal into a plurality of modulated backlight drive signals, the drive unit is connected to the liquid crystal display panel and the backlight module and transmits the video signal and the plurality of modulated backlight drive signals to the liquid crystal display panel and the backlight module, respectively, the video signal drives the liquid crystal display panel to generate a corresponding video, and the plurality of modulated backlight drive signals drive a plurality of light-emitting regions corresponding to the light-emitting diode module. [Brief explanation of the drawing]

[0011] To make the above and other objectives, features, advantages, and embodiments of the present invention clearer and easier to understand, they will be described below with reference to the drawings. [Figure 1] This is a schematic diagram of a light-emitting device according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of a light-emitting diode module of another embodiment of the light-emitting device shown in Figure 1 according to an embodiment of the present invention. [Figure 3] This is a schematic diagram of a display device according to an embodiment of the present invention. [Figure 3A] This is a schematic diagram of a display device according to an embodiment of the present invention. [Figure 3B] This is a schematic diagram of a display device according to an embodiment of the present invention. [Figure 4] This is a schematic diagram of the light-emitting diode module of the display device shown in Figure 3 of an embodiment of the present invention. [Figure 5] This is a schematic diagram of a display system according to an embodiment of the present invention. [Figure 5A] This is a schematic diagram of a display system according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of the light-emitting diode module of the display device shown in Figure 5 of an embodiment of the present invention. [Modes for carrying out the invention]

[0012] The features and technical details of the related patent applications for this invention can be clearly shown in the following detailed description with reference to preferred embodiments in the attached drawings. Before proceeding in detail, it should be noted that similar components are indicated by the same numbers.

[0013] Referring to Figure 1, Figure 1 is a schematic diagram of a light-emitting device 10 according to an embodiment of the present invention. The light-emitting device 10 includes a drive unit 102, a conversion unit 104, a light source module 106, and a compensation correction unit 108. The light-emitting device 10 may also be a lamp device, and the drive unit 102 is used to output a light driving signal LDS based on a source S, the source S may be a physical power switch for turning the lamp device on or off, or a software-based on / off signal. The light source module 106 may include a light-emitting diode module 1062, the light-emitting diode module 1062 includes a plurality of light-emitting zones LZ, each light-emitting zone LZ may correspond to a plurality of light-emitting diode LEDs, in this example each light-emitting zone LZ corresponds to four light-emitting diode LEDs. The light-emitting signal LDS drives the plurality of light-emitting zones of the light source module 106 that correspond to the light-emitting diode module 1062. The conversion unit 104 is connected to the drive unit 102 and the light source module 106, and the compensation correction unit 108 is connected to the conversion unit 104. The conversion unit 104 uses the compensation correction unit 108 to convert the light source drive signal LDS into multiple modulated light driving signals M_LDS to drive each light-emitting region corresponding to the light-emitting diode module 1062. The compensation correction unit 108 can generate the modulated light driving signals M_LDS by adjusting the light source drive signal LDS for driving the light-emitting diode module 1062 based on the optics, circuitry, and element characteristics of the light-emitting diode. In this way, the output current of each light-emitting region is slightly different due to the correction action of the compensation correction unit 108 (i.e., the modulated light driving signal M_LDS and the light source drive signal LDS are different), so that each light-emitting region can obtain uniform brightness characteristics, and the light-emitting device 10 of this embodiment of the present invention can improve upon the problem in the prior art where the brightness of each light-emitting region is non-uniform even with the same current.

[0014] Referring to Figure 2 for details, Figure 2 is a schematic diagram of another embodiment of the light-emitting diode module 1062 of the present invention. The light-emitting diode module 1062 has multiple light-emitting diode LEDs, and the number of light-emitting diode LEDs in one unit area UA is greater than the number of light-emitting regions. For example, assuming that four light-emitting diode LEDs are included in the area corresponding to one light-emitting region, this indicates that one unit area UA contains one light-emitting region, and that light-emitting region contains four light-emitting diode LEDs. Note that the number of LEDs included per unit area UA is not limited to four.

[0015] Furthermore, the compensation correction unit 108 of the embodiment of the present invention accesses the light emission adjustment data for the non-uniform characteristics of the light-emitting diode LEDs of the light-emitting diode module 1062. Light-emitting diode compensation module The conversion unit 104 has 1082, and the compensation correction unit 108 Light-emitting diode compensation module By using 1082, the light source drive signal LDS can be converted into multiple modulated light source drive signals M_LDS, and the light-emitting diode module 1062 can then be driven with the modulated light source drive signals M_LDS.

[0016] As mentioned in the prior art section, conventional area dimming technology is based on one assumption: that the output current of each light-emitting region is the same, and that the brightness of each light-emitting region is the same with the same current. However, specifically, each light-emitting diode LED in the light-emitting diode module 1062 has differences in recipe, hardware elements, or circuit layout, resulting in variations in the characteristics of each light-emitting diode LED. Therefore, when driving each light-emitting diode LED in the light-emitting diode module 1062 with the same current, the brightness of each light-emitting diode LED may differ, affecting the brightness uniformity of the light source module 106. In the embodiment, the conversion unit 104 of the embodiment of the present invention is Light-emitting diode compensation module The current value of the light-emitting diode LED can be adjusted using 1082, and the output current of each light-emitting region is as follows: Light-emitting diode compensation moduleIt is slightly different due to the correction effect of 1082, thereby obtaining uniform luminance characteristics and avoiding non-uniform luminance in the light-emitting region. In this case, the light-emitting diode module 1062 can apply the conventional area dimming technology to ensure that each light-emitting region after area dimming achieves the desired partition luminance.

[0017] In another embodiment of the embodiment of the present invention, as shown in FIG. 2, the light-emitting diode module 106 may further include a plurality of light-emitting diode driving elements 1062_d1 to 1062_dn for driving the light-emitting diodes LED located in the corresponding light-emitting regions. In this case, since the characteristics of the light-emitting diode driving elements 1062_d1 to 1062_dn may also deviate due to differences in recipes, hardware elements or circuit layouts, in addition to the non-uniform light-emitting characteristics of each light-emitting diode LED, each light-emitting region also simultaneously affects the luminance uniformity due to the non-uniform driving characteristics of the light-emitting diode driving elements 1062_d1 to 1062_dn. To address this problem, the compensation and correction unit 108 of the light-emitting device 10 in the embodiment of the present invention accesses the driving adjustment data of the non-uniform characteristics of the light-emitting diode driving elements 1062_d1 to 1062_dn of the light-emitting diode module 1062 Driver element compensation correction module may further include 1084. Thus, the conversion unit 104 of the embodiment of the present invention Driver element compensation correction module can use 1084 to adjust the current values for the light-emitting diode driving elements 1062_d1 to 1062_dn, and avoid non-uniform luminance in the light-emitting region.

[0018] In this embodiment, the conversion unit 104 may be a microcontroller unit (MCU), the compensation and correction unit 108 may be a memory, and store the light-emitting adjustment data of the non-uniform characteristics of the light-emitting diodes LED Light-emitting diode compensation module in 1082, and store the driving adjustment data of the non-uniform characteristics of the light-emitting diode driving elements 1062_d1 to 1062_dn Driver element compensation correction module in 1084. However, the proposed invention is not limited to this. For example, the compensation and correction unit 108 may be a processor, Light-emitting diode compensation module Use the method of the approximate conversion function to calculate the light emission adjustment data of the non-uniform characteristics of the light-emitting diode LED in 1082. Driver element compensation correction module Use the method of the approximate conversion function to calculate the drive adjustment data of the non-uniform characteristics of the light-emitting diode drive elements 1062_d1 to 1062_dn in 1084. The approximate conversion function may be in the form of a linear function, a non-linear function or a polynomial function, for example, a cubic function. In other embodiments, the compensation correction unit 108 may also be incorporated into the conversion unit 104, and the central processing unit core of the conversion unit 104 may be used to calculate the approximate conversion function, and there is no need to separately arrange another processor as the compensation correction unit 108, thereby reducing the arrangement cost.

[0019] In another embodiment, referring to FIG. 3, FIG. 3 is a schematic diagram of a display device 30 according to an embodiment of the present invention. The display device 30 may be a display including a drive unit 302, a conversion unit 304, a backlight module 306, a compensation correction unit 308, and a liquid crystal display panel 310. The drive unit 302 is connected to the liquid crystal display panel 310 and is used to output a video signal IMS and a backlight drive signal BLDS based on the video source IS. The video source IS is not input from the outside but is generated by the display device 30 itself. Therefore, the display device 30 is an independent display device and generally refers to liquid crystal products of types such as mobile phones, tablets, notebook computers, and in-vehicle devices.

[0020] The video signal IMS is used to drive the liquid crystal display panel 310 to generate the corresponding image. The backlight module 306 includes a light-emitting diode module 3062, which can contain multiple light-emitting regions corresponding to the display area of ​​the liquid crystal display panel 310, meaning that the number of light-emitting regions in one unit area is greater than the number of image regions. The backlight drive signal BLDS output by the drive unit 302 is used to drive the light-emitting regions of the backlight module 306 that correspond to the light-emitting diode module 3062. The conversion unit 304 is connected to the drive unit 302 and the backlight module 306, and the compensation correction unit 308 is connected to the conversion unit 304. The conversion unit 304 uses the compensation correction unit 308 to convert the backlight drive signal BLDS into multiple modulated backlight drive signals M_BLDS in order to drive each light-emitting region corresponding to the light-emitting diode module 3062. The compensation correction unit 308 can adjust the backlight drive signal BLDS for driving the light-emitting diode module 1062 based on the optical, circuit, and element characteristics of the display device 30 to generate a modulated backlight drive signal M_BLDS. In this way, the output current of the light-emitting region corresponding to each display region differs slightly due to the correction action of the compensation correction unit 308 (i.e., the modulated backlight drive signal M_BLDS differs from the backlight drive signal BLDS), so that each display region can obtain uniform brightness characteristics, and the display device 30 of the embodiment of the present invention can improve upon the problem of uneven brightness of the display regions in the prior art.

[0021] In one embodiment, as shown in Figure 3A, the display device 30 may include a timing controller (T-con), and the timing controller T-con may include a drive unit 302. Since the conversion unit 304 and compensation / correction unit 308 are independent of the timing controller, the conversion unit 304 and compensation / correction unit 308 may be applied to timing controllers mounted on different product types, thereby reducing development costs. Alternatively, as shown in Figure 3B, the timing controller of the display device 30 may include the drive unit 302, the conversion unit 304, and the compensation / correction unit 308. That is, the conversion unit 304 and compensation / correction unit 308 are integrated into the timing controller as an integrated IC module, thus enabling large-scale and economical reduction of production costs during mass production.

[0022] Furthermore, the compensation correction unit 308 of the embodiment of the present invention accesses the light emission adjustment data for the non-uniform characteristics of the light-emitting diode LEDs of the light-emitting diode module 3062. Light-emitting diode compensation module 3082 may also be present, and the conversion unit 304 is a compensation correction unit 308 Light-emitting diode compensation module The 3082 is used to convert the backlight drive signal BLDS into multiple modulated backlight drive signals M_BLDS, and the light-emitting diode module 3062 is driven by the modulated backlight drive signals M_BLDS.

[0023] Specifically, because each light-emitting diode LED in the light-emitting diode module 3062 has a different recipe, hardware element, or circuit layout, there will be a difference in the characteristics of each light-emitting diode LED. Therefore, when driving each light-emitting diode LED in the light-emitting diode module 3062 with the same current, the brightness of each light-emitting diode LED may differ, affecting the brightness uniformity of the backlight module 306. In one embodiment, the conversion unit 304 of the embodiment of the present invention is Light-emitting diode compensation moduleBy using the 3082, the current value of the light-emitting diode LED can be adjusted to avoid uneven brightness in the light-emitting area.

[0024] Furthermore, as shown in Figure 4, the light-emitting diode module 3062 may further include a plurality of light-emitting diode driver elements 3062_d1 to 3062_dn for driving light-emitting diode LEDs located within the corresponding light-emitting region. In this case, since the characteristics of the light-emitting diode driver elements 3062_d1 to 3062_dn may also be deviated due to differences in recipe, hardware elements, or circuit layout, the compensation correction unit 308 of the light-emitting device 10 in the embodiment of the present invention accesses drive adjustment data for the non-uniform characteristics of the light-emitting diode driver elements 3062_d1 to 3062_dn of the light-emitting diode module 3062. Driver element compensation correction module 3084 may further be included. Thus, the conversion unit 304 of the embodiment of the present invention is Driver element compensation correction module By using 3084, the current value for the light-emitting diode driver elements 3062_d1~3062_dn can be adjusted, thus avoiding uneven brightness in the light-emitting area.

[0025] Referring to another embodiment, Figure 5, is a schematic diagram of a display system 50 of an embodiment of the present invention. The display system 50 includes a display device DP and a video source generation device ISG. The display device DP may be a liquid crystal display including a drive unit 502, a backlight module 504, and a liquid crystal display panel 506. The video source generation device ISG includes a video processor 508, a conversion unit 510, and a compensation correction unit 512. For example, the video source generation device ISG may be provided on the host side or on a device having arithmetic processing functions, which differs from the compensation correction unit 308 of the display device 30 in Figure 3, which is built into the display device 30. Therefore, the video source is input to the display device DP via an external source, that is, the video source generation device ISG generates and inputs to the display device DP. The display device DP is a connected display device and generally refers to a liquid crystal product such as a computer screen or a television equipped with an external terminal.

[0026] In one embodiment, the display device DP may include a timing controller (T-con), the timing controller may include a drive unit 502, and the conversion unit 510 and compensation / correction unit 512 are independent of the timing controller (as shown in Figure 5A). Therefore, since both the conversion unit 510 and the compensation / correction unit 512 perform their functions in the video source generation device ISG, a high-speed computing computer can be used as the video source generation device ISG. For example, a graphics processing unit (GPU) can perform the compensation / correction functions of the conversion unit 510 and the compensation / correction unit 512. Thus, there is no need to newly design and develop a timing controller for the display device DP, and therefore the video source generation device ISG can be applied to different types of display devices DP, reducing the development cost of the timing controller.

[0027] The video processor 508 of the video source generation device ISG outputs the video signal IMS and the backlight drive signal BLDS to the conversion unit 510 based on the video source IS. The compensation correction unit 512 is connected to the conversion unit 510 so that the conversion unit 510 can use the compensation correction unit 512 to convert the backlight drive signal BLDS into multiple modulated backlight drive signals M_BLDS.

[0028] The drive unit 502 of the display device DP is connected to the liquid crystal display panel 506 and the backlight module 504, and transmits the video signal IMS and the modulated backlight drive signal M_BLDS to the liquid crystal display panel 506 and the backlight module 504, respectively. In other words, the drive unit 502 receives the video signal IMS and the modulated backlight drive signal M_BLDS from the conversion unit 510 and transmits the video signal IMS and the modulated backlight drive signal M_BLDS to the backlight module 504 and the liquid crystal display panel 506. Therefore, the video signal IMS can drive the liquid crystal display panel 506 to generate the corresponding image, and the modulated backlight drive signal M_BLDS can be modulated to drive the light-emitting area corresponding to the light-emitting diode module 5042. The backlight module 504 includes a light-emitting diode module 5042, and the light-emitting diode module 5042 includes multiple light-emitting regions corresponding to the display area of ​​the liquid crystal display panel 506. Therefore, the backlight drive signal M_BLDS output by the drive unit 502 is used to drive the light-emitting regions of the light-emitting diode module 5042 that correspond to the backlight module 504.

[0029] In the above embodiment, the compensation correction unit 512 of the embodiment of the present invention can adjust the backlight drive signal BLDS for driving the light-emitting diode module 5042 based on the optical, circuit and element characteristics of the display system 50 to generate a modulated backlight drive signal M_BLDS. Therefore, the display system 50 of the embodiment of the present invention can improve the problem of uneven brightness in the display area of ​​the prior art.

[0030] Furthermore, the compensation correction unit 512 of the video source generation device ISG of the display system 50 accesses the light emission adjustment data for the non-uniform characteristics of the light-emitting diode LEDs of the light-emitting diode module 5042. Light-emitting diode compensation module 5122 may be included, and the conversion unit 510 is a compensation correction unit 512 Light-emitting diode compensation moduleThe 5122 is used to convert the backlight drive signal BLDS into multiple modulated backlight drive signals M_BLDS, which are then transmitted to the drive unit 502, and the modulated backlight drive signals M_BLDS are used to drive the light-emitting diode module 5042.

[0031] Specifically, because each light-emitting diode LED in the light-emitting diode module 5042 has a different recipe, hardware element, or circuit layout, there will be a difference in the characteristics of each light-emitting diode LED. Therefore, when driving each light-emitting diode LED in the light-emitting diode module 5042 with the same current, the brightness generated by each light-emitting diode LED may differ, affecting the brightness uniformity of the backlight module 504. In one embodiment, the conversion unit 510 of the embodiment of the present invention is, Light-emitting diode compensation module By using the 5122, the current value of the light-emitting diode LED can be adjusted to avoid uneven brightness in the light-emitting area.

[0032] Furthermore, as shown in Figure 6, the light-emitting diode module 5042 may further include a plurality of light-emitting diode driver elements 5042_d1 to 5042_dn for driving light-emitting diode LEDs located within the corresponding light-emitting region. In this case, since the characteristics of the light-emitting diode driver elements 5042_d1 to 5042_dn may also differ due to differences in recipe, hardware elements, or circuit layout, the compensation correction unit 512 of the light-emitting device 50 of the embodiment of the present invention accesses drive adjustment data for the non-uniform characteristics of the light-emitting diode driver elements 5042_d1 to 5042_dn of the light-emitting diode module 5042. Driver element compensation correction module 5124 may be further included. Thus, the conversion unit 304 of the embodiment of the present invention is Driver element compensation correction module By using 5124, the current value for the light-emitting diode driver elements 5042_d1~5042_dn can be adjusted, thus avoiding uneven brightness in the light-emitting region.

[0033] As described above, the present invention provides a method for driving a light source module, a light-emitting device, a display device, and a display system. Because the output current of each light-emitting region differs slightly due to the corrective action of the compensation correction unit, each light-emitting region can obtain uniform brightness characteristics. The present invention improves upon the problem in the prior art where the brightness of each light-emitting region is uneven even with the same current, and avoids uneven brightness of the light-emitting regions. In this case, by introducing and applying conventional area dimming technology, it is possible to ensure that the desired segmented brightness is achieved in each light-emitting region after area dimming. More specifically, the compensation correction unit Light-emitting diode compensation module and Driver element compensation correction module By using this method to obtain light emission adjustment data for the non-uniform characteristics of the light-emitting diode LED and drive adjustment data for the non-uniform characteristics of the light-emitting diode driver element, and by correcting and adjusting the current values ​​of the light-emitting diode and the light-emitting diode driver element, non-uniform brightness in the light-emitting region can be avoided.

[0034] The foregoing are merely preferred embodiments of the present invention, and equivalent modifications and alterations according to the claims of the present invention are all included within the scope of the present invention. [Explanation of Symbols]

[0035] 10 Light-emitting device 102, 302, 502 drive units 104, 304, 510 conversion unit 106 Light Source Modules 1062, 3062, 5042 Light Emitting Diode Modules 1062_d1~1062_dn, 3062_d1~3062_dn, 5042_d1~5042_dn Light-emitting diode driving elements 108, 308, 512 Compensation Correction Unit 1082, 3082, 5122 Light-emitting diode compensation module 1084, 3084, 5124 Driver element compensation correction module 30 Display device 306, 504 Backlight Modules 310, 506 LCD display panel 50 Display Systems 508 Video Processor BLDS backlight drive signal M_BLDS Modulated backlight drive signal M_LDS Modulated Light Source Drive Signal DP display device IMS video signal IS video source ISG Video Source Generator LDS light source drive signal LED Light Emitting Diode LZ emission area S Sauce T-con Timing Controller UA Unit Area

Claims

1. A method for driving a light source module used in a light-emitting device, The light-emitting device includes a drive unit, a conversion unit, a compensation correction unit, and the light source module, wherein the drive unit outputs a light source drive signal based on a source, the conversion unit is directly connected to the drive unit and the light source module, and the light source drive signal is used to drive a plurality of light-emitting regions corresponding to the light-emitting diode module of the light source module. The method for driving the aforementioned light source module is: The conversion unit includes using the compensation correction unit to convert the light source drive signal from the drive unit into a plurality of modulated light source drive signals to drive each light-emitting region corresponding to the light-emitting diode module. The light-emitting diode module has a plurality of light-emitting diodes and a plurality of light-emitting diode driving elements for driving the light-emitting diodes located within the corresponding light-emitting regions, the compensation correction unit further has a driving element compensation correction module for accessing driving adjustment data for the non-uniform characteristics of the driving elements of the plurality of light-emitting diodes of the light-emitting diode module, and the conversion unit converts the light source driving signal into the plurality of modulated light source driving signals using the driving element compensation correction module of the compensation correction unit. The aforementioned drive element compensation correction module calculates drive adjustment data for the non-uniform characteristics of the drive element of the light-emitting diode of the light-emitting diode module using an approximate conversion function method. The non-uniform characteristics of the light-emitting diode's driving element are due to differences in the recipe, hardware elements, or circuit layout of the light-emitting diode's driving element. A method for driving a light source module.

2. The light-emitting diode module has a plurality of light-emitting diodes, the compensation correction unit has a light-emitting diode compensation correction module for accessing light emission adjustment data for the non-uniform characteristics of the plurality of light-emitting diodes of the light-emitting diode module, and the conversion unit uses the light-emitting diode compensation correction module and the drive element compensation correction module of the compensation correction unit to convert the light source drive signal into the plurality of modulated light source drive signals. A method for driving a light source module according to claim 1.

3. A light-emitting device, A drive unit for outputting a light source drive signal based on the source, A light source module including an LED module, A conversion unit directly connected to the aforementioned drive unit and the aforementioned light source module, Includes a compensation correction unit connected to the conversion unit, The aforementioned light source drive signal is used to drive a plurality of light-emitting regions corresponding to the light-emitting diode module of the light source module. The conversion unit uses the compensation correction unit to convert the light source drive signal from the drive unit into a plurality of modulated light source drive signals, and drives each light-emitting region corresponding to the light-emitting diode module. The light-emitting diode module has a plurality of light-emitting diodes and a plurality of light-emitting diode driving elements for driving the light-emitting diodes located within the corresponding light-emitting regions, the compensation correction unit further has a driving element compensation correction module for accessing driving adjustment data for the non-uniform characteristics of the driving elements of the plurality of light-emitting diodes of the light-emitting diode module, and the conversion unit converts the light source driving signal into the plurality of modulated light source driving signals using the driving element compensation correction module of the compensation correction unit. The aforementioned drive element compensation correction module calculates drive adjustment data for the non-uniform characteristics of the drive element of the light-emitting diode of the light-emitting diode module using an approximate conversion function method. The non-uniform characteristics of the light-emitting diode's driving element are due to differences in the recipe, hardware elements, or circuit layout of the light-emitting diode's driving element. Light-emitting device.

4. LCD display panel, A drive unit connected to the liquid crystal display panel and outputting a video signal and a backlight drive signal for driving the liquid crystal display panel to generate a corresponding image based on a video source, A backlight module including an LED module, A conversion unit directly connected to the drive unit and the backlight module, Includes a compensation correction unit connected to the conversion unit, The backlight drive signal is used to drive a plurality of light-emitting regions corresponding to the light-emitting diode module of the backlight module. The conversion unit uses the compensation correction unit to convert the backlight drive signal from the drive unit into a plurality of modulated backlight drive signals to drive each light-emitting region corresponding to the light-emitting diode module. The light-emitting diode module has a plurality of light-emitting diodes and a plurality of light-emitting diode driver elements for driving the light-emitting diodes located within the corresponding light-emitting regions, the compensation correction unit further has a driver element compensation correction module for accessing drive adjustment data for the non-uniform characteristics of the driver elements of the plurality of light-emitting diodes of the light-emitting diode module, and the conversion unit converts the backlight drive signal into the plurality of modulated backlight drive signals using the driver element compensation correction module of the compensation correction unit. The aforementioned drive element compensation correction module calculates drive adjustment data for the non-uniform characteristics of the drive element of the light-emitting diode of the light-emitting diode module using an approximate conversion function method. The non-uniform characteristics of the light-emitting diode's driving element are due to differences in the recipe, hardware elements, or circuit layout of the light-emitting diode's driving element. Display device.

5. The timing controller of the display device includes the drive unit, and the conversion unit and the compensation correction unit are independent of the timing controller. The display device according to claim 4.

6. The timing controller of the display device includes the drive unit, the conversion unit, and the compensation correction unit. The display device according to claim 4.

7. A display system including a display device and a video source generating device, The display device includes a drive unit, a backlight module, and a liquid crystal display panel, the backlight module includes a light-emitting diode module, and the video source generation device includes a video processor, a conversion unit, and a compensation correction unit. The aforementioned video processor outputs a video signal and a backlight drive signal based on the video source. The conversion unit is connected to the video processor, The compensation correction unit is connected to the conversion unit, and the conversion unit uses the compensation correction unit to convert the backlight drive signal into a plurality of modulated backlight drive signals. The drive unit is connected to the liquid crystal display panel and the backlight module, and transmits the video signal and the plurality of modulated backlight drive signals to the liquid crystal display panel and the backlight module, respectively. The video signal is used to drive the liquid crystal display panel to generate the corresponding image, and the plurality of modulated backlight drive signals are used to drive the plurality of light-emitting regions corresponding to the light-emitting diode module. The light-emitting diode module has a plurality of light-emitting diodes and a plurality of light-emitting diode driver elements for driving the light-emitting diodes located within the corresponding light-emitting regions, the compensation correction unit further has a driver element compensation correction module for accessing drive adjustment data for the non-uniform characteristics of the driver elements of the plurality of light-emitting diodes of the light-emitting diode module, and the conversion unit converts the backlight drive signal into the plurality of modulated backlight drive signals using the driver element compensation correction module of the compensation correction unit. The aforementioned drive element compensation correction module calculates drive adjustment data for the non-uniform characteristics of the drive element of the light-emitting diode of the light-emitting diode module using an approximate conversion function method. The non-uniform characteristics of the light-emitting diode's driving element are due to differences in the recipe, hardware elements, or circuit layout of the light-emitting diode's driving element. Display system.

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