TWI433124B - Color sequential display and luminance adjusting method for backlight module thereof - Google Patents

Description

Color sequential display and related backlight module illumination brightness adjustment method

The present invention relates to a display and related backlight module illumination brightness adjustment method, and more particularly to a display capable of reducing the aging of each primary color LED of the backlight module and the effect of ambient light on the brightness of the backlight module. Related backlight module brightness adjustment method.

The traditional liquid crystal display mainly uses a color filter as a medium to filter out different primary colors to achieve a full color display. However, since the light needs to be filtered out during the process, such a liquid crystal display is produced. Most of the illuminance is filtered by the color filter, resulting in a low luminous efficiency. Therefore, a display using a color sequential method (referred to as a color sequential display) is used instead of a display using a color filter to maintain high luminous efficiency. Since the color sequential display emits light corresponding to different primary colors in a predetermined color sequence in a short time, the human visual persistence phenomenon can be utilized to achieve the mixed color and realize the full color display, and since it is not required to be used The color filter filters out light, so its luminous efficiency is significantly higher than that of a conventional liquid crystal display using a color filter.

Generally, when the color sequential display is implemented, the backlight module included in the color sequential LED display can be displayed on various primary colors (ie, red, green, and blue primary colors) through the operating characteristics of the light emitting diode itself. The change in brightness varies linearly with respect to temperature. However, when the backlight module included in the general color sequential display is used for a long period of time, the light emitting diode itself may be aged to gradually emit a brightness lower than the required brightness; Long-term use will also cause the characteristics of the light-emitting diode to change, so that the brightness and temperature changes of the light-emitting diode gradually turn into a non-linear change that is difficult to control. As a result, in general, the color-sequential display that has been used for a long time has a situation in which the brightness is insufficient due to the above-described nonlinear change in addition to the case where the brightness is insufficient.

The invention discloses a display. The display comprises a backlight module, a timing controller, and a display panel. The timing controller includes an inductive controller and a color sequential display drive controller. The inductive controller stores a look-up table. The sensing controller comprises a color sequential sensing unit and a light emitting diode control unit. The color sequence sensing unit is configured to receive a light sensing signal and a temperature sensing signal detected by each of the light sensor and the temperature sensor. The LED control unit is configured to adjust, according to the comparison table, the photo-sensing signal, and the temperature sensing signal, a brightness of light emitted by the backlight module corresponding to at least one primary color. The color sequence display drive controller is configured to generate a synchronization signal based on an image data. The synchronization signal corresponds to one of the preset color sequences when the backlight module displays the at least one primary color. The display panel is configured to display the image data according to the brightness of the light adjusted by the LED control unit. The comparison table stores one standard brightness used by the backlight module corresponding to the at least one primary color and a temperature.

The invention discloses a display. The display comprises a backlight module, a microprocessor, and a display panel. The microprocessor stores a look-up table. The microprocessor is configured to receive a light sensing signal and a temperature sensing signal detected by a light sensor and a temperature sensor of the backlight module, and to use the light sensing signal according to the comparison table. And the temperature sensing signal, adjusting the brightness of the backlight module to be used corresponding to at least one primary color. The color sequence display drive controller is configured to generate a synchronization signal based on an image data. The synchronization signal corresponds to one of the preset color sequences when the backlight module displays the at least one primary color. The display panel is configured to display the image data according to the brightness of the light adjusted by the microprocessor. The comparison table stores the backlight module corresponding to the at least one primary color, a target brightness value used by the backlight module, and the standard brightness used in a temperature.

The invention discloses a method for adjusting the brightness of a backlight module. The method includes detecting a temperature of a backlight module, and querying a comparison table to find a standard brightness according to the temperature and a target brightness value used by the display including the backlight module; a mechanism and a preset color sequence of the display, detecting an actual light-emitting brightness of the backlight module corresponding to at least one primary color; comparing the actual light-emitting brightness with the standard brightness; and comparing the actual light-emitting brightness with As a result of one of the standard brightness, the actual brightness of the light is adjusted. The comparison table stores the standard brightness, and the standard brightness is used when the backlight module corresponds to the at least one primary color and a temperature.

Certain terms are used throughout the description and following claims to refer to particular elements. It should be understood by those of ordinary skill in the art that manufacturers may refer to the same elements by different nouns. The scope of this specification and the subsequent patent application do not use the difference of the names as the means for distinguishing the elements, but the differences in the functions of the elements as the basis for the distinction. The term "including" as used throughout the specification and subsequent claims is an open term and should be interpreted as "including but not limited to". In addition, the term "electrical connection" is used herein to include any direct and indirect electrical connection. Therefore, if a first device is electrically connected to a second device, it means that the first device can be directly connected to the second device or indirectly connected to the second device through other devices or connection means.

In order to solve various shortcomings derived from the above-mentioned general color sequential display after a long period of use, the present invention discloses a color sequential display for reducing the aging phenomenon caused by the above light emitting diode and a related backlight module adjusting brightness brightness adjusting method. . The color sequence display and the related backlight module illumination brightness adjustment method disclosed by the present invention not only use one of the consideration conditions of the color sequence display as the adjustment condition of the brightness of the different primary color light-emitting diodes, but also the color sequence The backlight module configured by the display is affected by its ambient brightness (ie, ambient light) as one of the consideration conditions, so that the backlight module can eliminate the brightness deviation caused by the ambient light before determining the brightness of the light, thereby achieving different primary colors. Luminance compensation of the light-emitting diode.

In implementing the display and method disclosed in the present invention, it is first necessary to first introduce the illumination mode of the color sequential display in its backlight module. Please refer to FIG. 1 , which is a timing diagram showing the relationship between time and brightness of a backlight module of a color sequential display when displaying according to different primary colors. As shown in FIG. 1 , when the backlight module is displayed in the color sequential method, an image is displayed in turn in a predetermined color sequence in a short time, for example, correspondingly within 16.76 milliseconds as shown in FIG. 1 . The display of the three primary colors of red, green, and blue, wherein the length of time of displaying the three primary colors is adjusted by means of a Pulse Width Modulation (PWM) signal, that is, as shown in FIG. The adjustment is made with the lengths of the three time zones indicated by TR, TG, and TB. The color sequential display and method disclosed in the present invention need to be illustrated according to the timing diagram shown in FIG. 1. However, in various embodiments disclosed in the present invention, the preset color sequence used is not limited to the first embodiment. 1 The red, green, and blue color sequence is shown.

Please refer to FIG. 2, which is a schematic diagram of a color sequential display 100 according to a first embodiment of the present invention. As shown in FIG. 1 , the color sequential display 100 includes a timing controller 110 , a backlight module 120 , a gate line driving unit 130 , a data line driving unit 140 , and a display panel 150 . The backlight module 120 includes a light sensor 122, a temperature sensor 124, and a backlight module driving unit 126. The timing controller 110 includes an inductive controller 160 and a color sequential display driving controller 170. The inductive controller 160 includes a color sequential sensing unit 180 and a light emitting diode control unit 190. The light sensor 122 is configured to detect the different light-emitting brightness of the backlight module 120 corresponding to the various primary colors shown in FIG. 1 to generate a light-sensing signal and transmit it to the inductive controller 160. The temperature sensor 124 is configured to detect a temperature of the backlight module 120 to generate a temperature sensing signal and transmit it to the sensing controller 160. Please note that in one embodiment of the invention, the temperature sensor 124 is performing backlighting. When the temperature of the module 120 is detected, it will continue to detect for a period of time (for example, several seconds), and the obtained temperature value will be provided to other components after obtaining a relatively stable temperature count, in addition, when detecting When the temperature of the backlight module 120 does not reach a stable value, the detection will be performed again until a stable temperature count is obtained. The backlight module driving unit 126 is configured to control, according to one of the illumination brightnesses adjusted by the LED control unit 190, the different illumination brightness used by the backlight module 120 corresponding to the various primary colors shown in FIG. 1 . The inductive controller 160 stores a look-up table 185 that records the ideal brightness value (ie, standard brightness) that the backlight module 120 should use under different temperatures and target brightness values, wherein the comparison table 185 is implemented in one of the present inventions. The representation in the example will be explained in Fig. 3. The color sequence sensing unit 180 is configured to receive the light sensing signal and the temperature sensing signal received by the backlight module 120, and transmit the light sensing signal and the temperature sensing signal to the LED control unit 190. The LED control unit 190 queries the comparison table according to the different illumination brightnesses indicated by the photo-sensing signals corresponding to the various primary colors shown in FIG. 1 and the temperature of the backlight module 120 indicated by the temperature sensing signals. 185, to find and adjust the ideal illuminance of different primary colors at different temperatures and target brightness values. The color sequence display driving controller 170 is configured to generate a synchronization signal according to the received image data, and the synchronization signal corresponds to the preset color sequence when the backlight module 120 displays the primary color in FIG. 1 to make the backlight The light generated by the module 120 is synchronized with the image data displayed on the display panel 150. The data line driving unit 140 is configured to drive the display panel 150 according to the image data received by the color sequence display driving controller 170 and the preset color sequence to perform various types on the display panel 150 corresponding to the preset color sequence. The primary color and the display of the image data, and the brightness required by the display panel 150 to display the image data are adjusted and controlled by the LED control unit 190 and the backlight module 126. The gate line driving unit 130 is used to control the gate lines on the display panel 150 to operate the display panel 150.

Please refer to FIG. 3, which is a schematic diagram of an embodiment of the comparison table 185 shown in FIG. 2. As shown in FIG. 3, the comparison table 185 is based on temperature (for example, ranges of 21-30, 31-40, 41-50, etc. shown in FIG. 3) and target brightness values (for example, 150 and 200 shown in FIG. 3). As an index, the standard brightness of each primary color corresponding to the combination of various temperature and target brightness values used by the backlight module 120 is stored (ie, as shown in FIG. 3) And other information). For example, when the temperature of the backlight module 120 is 27 degrees, and the target brightness value used by the display 100 is 150, the LED control unit 190 refers to the temperature value 21-30 and the target brightness value 150. One group of brightness It is an ideal illuminance that is used when each of the three primary colors of red, green, and blue is displayed.

The driving method of the color sequential display 100 shown in Fig. 2 is as follows. First, after the color sequential display 100 is activated, a specific initial program is performed, for example, the adjustment of the pulse modulation width signal or the driving current required to display the respective primary colors corresponding to the predetermined color sequence in FIG. Setting and loading the initial value setting of the LED control unit 190, wherein in the embodiment of FIG. 2, the target brightness value used by the color sequential display 100 is also loaded into the LED control unit at this time. 190. In a first stage, the temperature sensor 124 returns the temperature change of the backlight module 120 itself to the color sequence sensing unit 180 included in the sensing controller 160 in the form of the temperature sensing signal, and then the sensing controller 160 The included LED control unit 190 queries the comparison table 185 according to the loaded target brightness value and the temperature corresponding to the temperature sensing signal to obtain a standard brightness corresponding to one of the primary colors, for example, FIG. The respective brightness corresponding to the standard brightness of red, green and blue Wait. Then, in a second stage, the light sensor 122 returns the actual brightness value obtained by detecting the brightness of the backlight module 120 to the color sequence sensing unit 180 in the form of the light sensing signal, and then the light emitting diode The polar body control unit 190 compares the light-emitting brightness represented by the light-sensing signal with the set of standard brightness values queried by the light-emitting diode control unit 190 in the first stage, and controls the backlight module driving accordingly. The brightness of the light when the unit 126 drives the backlight module 120. Please note that the photo-sensing signal includes the actual illuminating brightness corresponding to different primary colors, and the photo sensor 122 performs time-division detection by using the time zones TR, TG, TB corresponding to different colors as shown in FIG. 1 (also That is, the actual luminance of red is detected in the time zone TR, the actual luminance of the green is detected in the time zone TG, and the actual luminance of the blue is detected in the time zone TB. It is assumed that the actual brightness systems obtained by the light sensor 122 corresponding to different primary colors for time-series detection are respectively LR, LG, and LB corresponding to red, green, and blue, and assuming that the temperature is 21-30 at this time, Light-emitting diode control unit 190 will standard brightness Compare with the actual brightness LR, the standard brightness Compare with actual brightness LG and standard brightness Compare with the actual brightness LB to check whether each actual brightness occurs below the corresponding standard brightness. When any actual brightness is lower than the corresponding standard brightness, it represents a phenomenon in which the illuminating diode aging causes the illuminating brightness to be attenuated, and corresponding brightness adjustment is required at this time. For example, suppose the actual brightness LR is lower than the standard brightness In the case where the actual brightness of the other two is not lower than the corresponding standard brightness, the LED control unit 190 will fine-tune the actual brightness LR, LG, LB, until the actual brightness LR, LG, LB Each of them is not lower than the corresponding standard brightness to achieve white balance; assume that the actual brightness LR is lower than the standard brightness And at the same time the actual brightness LB is lower than the standard brightness In the case of the LED control unit 190, the actual brightness LR, LG, and LB are also adjusted to be finely adjusted until the actual brightness LR, LG, and LB are not lower than the corresponding standard brightness to achieve white balance. In short, in the present invention, the adjustment and compensation for the actual brightness is to fine-tune the various primary colors, and until the actual brightness corresponding to any of the primary colors is not lower than the standard brightness, to achieve the backlight module. 120 white balance on the light.

Please refer to FIG. 4, which is a schematic diagram of a display 200 according to a second embodiment of the present invention. As shown in FIG. 4, the main difference between the display 200 and the display 100 is that an ambient light brightness calculation unit 215 is added to the induction controller 160 to exclude ambient light from the light-emitting diode control unit 190 to control the backlight module driving unit 126. The brightness shift that can be caused by the actual brightness used. Note that in FIG. 4, the inductive controller 160 is replaced with the inductive controller 260, and the timing controller 110 is replaced with the timing controller 210 to indicate the difference from the display 100 in FIG. During the operation of the display 100 described above, it is mentioned that the light sensor 122 utilizes a time-sharing detection mechanism of various primary colors to obtain a method corresponding to the actual brightness of the various primary colors; and in the display 200 shown in FIG. 4, Apply to the time zone TR, TG, TB of Figure 1. To perform the time-sharing detection mechanism to obtain the actual luminances LR, LG, and LB corresponding to the respective primary colors, and also perform the red, green, and blue colors in the time zones ΔTR, ΔTG, and ΔTB shown in FIG. Time-sharing detection mechanism of ambient light brightness SLR, SLG, SLB. As shown in FIG. 1, in the time zones ΔTR, ΔTG, and ΔTB, since the pulse width modulation signals of red, green, and blue are not at a high level, the backlight module driving unit 126 does not emit red. , green, blue light; in other words, only the ambient light brightness of the backlight module 120 is detected in the time zones ΔTR, ΔTG, ΔTB, and because the time-sharing detection mechanism is also adopted, it can be used in ambient light. In the case where the brightness changes faster and is larger, the effect of the ambient light on the brightness is more perfect and dynamic corresponding to different primary colors. The ambient light brightness detected by the light sensor 122 is also fed back to the light emitting diode control unit 190 through the color sequence sensing unit 180, so that the light emitting diode control unit 190 can subtract the actual brightness LR, LG, and LB from the environment. Light brightness SLR, SLG, SLB, and according to the brightness (LR-SLR), (LG-SLG), (LB-SLB), the above-mentioned actual light-emitting brightness adjustment for achieving white balance; in other words, light-emitting diode control The unit 190 adjusts the light-emitting brightness according to one of the adjusted light-sensing signals adjusted by the ambient light brightness calculating unit 215, so that the influence of the ambient light brightness is eliminated in the white balance achieved by the last backlight module driving unit 126.

Please refer to FIG. 5, which is a schematic diagram of a display 300 according to a third embodiment of the present invention. As shown in FIG. 5, the main difference between the display 300 and the display 200 shown in FIG. 4 is that the display 300 additionally adds an ambient light sensor 128 directly detecting the external ambient light to the display 200, and the sensing controller 260 is additionally added. A gray scale value statistics unit 325 is formed to form an inductive controller 360. In Figure 4 In the display 200, the ambient light brightness detected by the light sensor 122 by using the time-sharing detection mechanism is the portion of the backlight module 120 that is directly affected by the ambient light when the light source is illuminated; and in FIG. 5 The ambient light sensor 128 used is for directly measuring the ambient light outside the display 300, and the timing of the ambient light sensor 128 detecting is also the time zone ΔTR, ΔTG, shown in FIG. △ TB. However, the ambient light brightness detected by the light sensor 122 directly on the light source of the backlight module 120 in FIG. 4 has been taken into consideration to the gray scale value used when the display 200 is displayed, and the ambient light sensor 128 directly detects The ambient light is not taken into account according to the gray scale value used by the display 300. Therefore, the ambient light brightness calculation unit 215 cannot directly directly measure the ambient light brightness detected by the ambient light sensor 128 at the light sensor 122. The ambient light is excluded from the detected actual luminance. In order for the ambient light luminance detected by the ambient light sensor 128 to be used by the ambient light luminance calculation unit 215 to exclude ambient light in the actual luminance, the grayscale value statistics unit 325 is used to display by color sequence. The grayscale data corresponding to the image data is received by the driving controller 170, so that the ambient light luminance calculating unit 215 can calculate the current transmittance on the display panel 150 according to the grayscale data received by the grayscale value counting unit 325, and according to the The calculated transmittance is more accurate to obtain the effect of the ambient light brightness received by the ambient light sensor 128 on the actual brightness detected by the light sensor 122. Please note that in FIG. 5, the inductive controller 260 shown in FIG. 4 is replaced with the inductive controller 360, and the timing controller 210 is replaced with the timing controller 310 to indicate the display 200 in FIG. The difference. In a preferred embodiment of the present invention, the effect of the ambient light intensity received by the ambient light sensor 128 on the actual brightness detected by the light sensor 122 can be quantified as (ambient light)* (panel penetration) Rate)* (the grayscale value detected by the grayscale value statistical unit 325* The number of pixels of the panel 150) / (resolution of the display panel 150).

Please refer to FIG. 6, which is a schematic diagram of a display 400 according to a fourth embodiment of the present invention. As shown in FIG. 6, the main difference between the display 400 and the display 300 shown in FIG. 5 is that the light sensor 122 in the backlight module 120 is replaced with a light sensor array 622, and the temperature sensor 124 is replaced. A temperature sensor array 624 is used to replace the backlight module 120 with the backlight module 620 in FIG. The display 400 shown in FIG. 6 is mainly applied to a display panel and a display of a larger size, for example, a display panel and a display of 32 inches or more, so that the use of the light sensor array 622 and the temperature sensor array 624 can preferably be matched. The need for such larger display panels and displays. The temperature sensor array 624 includes a plurality of temperature sensors (not shown, such as the temperature sensor 124), and the light sensor array 622 also includes a plurality of light sensors (not shown), and the plurality of light sensors The light sensor 122 shown in the previous figures or the ambient light sensor 128 shown in FIG. 5 is included to exclude the influence of ambient light inside or outside the display 400 by the respective auxiliary ambient light calculation unit 215.

Please refer to FIG. 7, which is a schematic diagram of a display 500 according to a fifth embodiment of the present invention. As shown in FIG. 7, the difference between the display 500 and the displays disclosed in the present invention is that the display 500 is directly executed by a microprocessor 510 before the color sequential sensing unit 180, the ambient light luminance calculating unit 215, and the light emitting. The function of the diode control unit 190 or the gray scale value counting unit 325 is to receive the required temperature sensing signal, optical sensing signal, or ambient light brightness signal by the backlight module 120, and adjust the backlight module driving unit accordingly. The illumination brightness used by the 126 and the color sequence display drive controller 170 receive the synchronization signal to synchronize the illumination of the backlight module 120 with the image data display of the display panel 150.

Please refer to FIG. 8 , which is a schematic diagram of a method for adjusting the brightness of a backlight of the backlight module according to the display 100 shown in FIG. 2 . As shown in FIG. 8, the method includes the following steps: Step 802: Start a color sequential display and execute an initial program; Step 804: Load an initial value setting of a light emitting diode control unit; Step 806: Detect a temperature of a backlight module; step 808: query a comparison table according to the temperature detected by the backlight module and a target brightness value used by a display to obtain a temperature corresponding to the temperature and the target brightness value. a standard brightness; step 810: detecting, according to a time-sharing mechanism, an actual light-emitting brightness of the backlight module corresponding to at least one primary color; step 812: comparing the standard brightness with the actual light-emitting brightness to confirm the actual light-emitting brightness Whether the brightness is lower than the standard brightness; when the actual brightness is lower than the standard brightness, step 814 is performed, otherwise step 806 is performed; and step 814: the actual brightness is fine-tuned until the actual brightness is not lower than the The standard brightness is up to and step 806 is performed.

Please note that when the actual brightness of the light detected by the light sensor 122 in step 812 is not lower than the standard brightness obtained by the light-emitting diode control unit 190 by the look-up table 185, it represents the current backlight module. The state of 120 is normal, so various detection procedures are restarted to continuously confirm whether the backlight module 120 is aging. When the actual brightness of the light detected by the light sensor 122 in step 812 is lower than the standard brightness obtained by the light-emitting diode control unit 190 by the look-up table 185, the light in the backlight module 120 is represented. The aging phenomenon occurs in the diode, and the actual brightness of the aging phenomenon in at least one of the primary colors is finely adjusted until the actual brightness of all the primary colors is higher than the corresponding standard brightness to achieve white balance.

Please refer to FIG. 9 , which is a schematic diagram of a method for adjusting brightness of a backlight module according to the display 200 shown in FIG. 4 . As shown in FIG. 9, in addition to the steps repeated in FIG. 8, the method further includes the following steps: Step 811: detecting, according to a time sharing mechanism, the ambient brightness of the backlight module corresponding to one of the at least one primary color, And the effect of the ambient light brightness is excluded from the actual light-emitting brightness detected in step 810.

The difference between the method shown in Figure 9 and the method shown in Figure 8 is mainly the introduction of an ambient light detection mechanism, and the ambient light is excluded from the actual light-emitting brightness detected by the light sensor. The impact.

Please refer to FIG. 10 , which is a schematic diagram of a method for adjusting the brightness of a backlight module according to the display 300 disclosed in FIG. 5 . As shown in FIG. 10, in addition to the steps repeated in FIG. 8 or FIG. 9, the method further includes the following steps: Step 911: detecting, according to a time sharing mechanism, the backlight module corresponds to one of at least one primary color Ambient light brightness, calculating a transmittance of the display panel according to the image grayscale value of the display and the ambient light brightness, and excluding the ambient light according to the actual light emission brightness detected in step 810 according to the transmittance The effect of brightness.

The displays 400 and 500 shown in Figures 6 and 7 are applied in combination with the methods disclosed in Figures 8, 9, and 10, or a combination thereof, and therefore will not be described again. It is to be noted, however, that the embodiments described in the eighth, ninth, and tenth drawings, which are in the form of a reasonable arrangement, or in addition to the other additional conditions mentioned in the above description, are still considered to be within the scope of the present invention.

The invention discloses a color sequence display and a related backlight module light-emitting brightness adjusting method, so as to solve the problem that the general color-sequence display has insufficient brightness when facing the aging of the primary color light-emitting diodes of the backlight module to achieve white balance. The color sequential display disclosed in the present invention also considers the brightness shift caused by ambient light in the brightness adjustment of each primary color light emitting diode and overcomes the problem, so that the color sequential display of the present invention does not adjust the brightness. Interfered with ambient light.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100, 200, 300, 400, 500. . . monitor

110, 210, 310. . . Timing controller

120, 620. . . Backlight module

122. . . Light sensor

124. . . Temperature sensor

126. . . Backlight module drive unit

128. . . Ambient light sensor

130. . . Gate line drive unit

140. . . Data line drive unit

150. . . Display panel

160, 260, 360. . . Induction controller

170. . . Color sequence display drive controller

180. . . Color sequence sensing unit

185. . . Chart

190. . . LED driver unit

215‧‧‧ Ambient light intensity calculation unit

325‧‧‧ Grayscale value statistics unit

510‧‧‧Microprocessor

622‧‧‧Light sensor array

624‧‧‧Temperature sensor array

Figure 1 is a timing diagram showing the relationship between time and brightness of a backlight module of a color sequential display when displayed according to different primary colors.

2, 4, 5, 6, and 7 are schematic views of a color sequential display according to various embodiments of the present invention.

Figure 3 is a schematic illustration of one embodiment of the look-up table shown in Figure 2.

8 , 9 and 10 are schematic diagrams showing a method for adjusting the brightness of a backlight module according to various embodiments of the present invention.

300. . . monitor

310. . . Timing controller

120. . . Backlight module

122. . . Light sensor

124. . . Temperature sensor

126. . . Backlight module drive unit

128. . . Ambient light sensor

130. . . Gate line drive unit

140. . . Data line drive unit

150. . . Display panel

360. . . Induction controller

170. . . Color sequence display drive controller

180. . . Color sequence sensing unit

185. . . Chart

190. . . LED driver unit

215. . . Ambient light intensity calculation unit

325. . . Gray scale value statistics unit

Claims (21)

A color-sequential display comprising: a backlight module, comprising: a light sensor for detecting a plurality of light-emitting luminances corresponding to the plurality of primary colors of the backlight module to generate a plurality of light-sensing signals; and a temperature sensing The device is configured to detect a temperature of the backlight module to generate a temperature sensing signal; a timing controller comprising: an inductive controller, storing a comparison table, the sensing controller comprising: a color sequential sensing unit, Receiving a plurality of ambient light luminance signals of the plurality of primary colors, the plurality of optical sensing signals generated by the optical sensor and the temperature sensing signal generated by the temperature sensor; and an ambient light luminance calculating unit for determining the plurality of ambient light The ambient light luminance signal adjusts the plurality of optical sensing signals to filter a portion of the plurality of optical sensing signals that are originally affected by the brightness of the plurality of ambient light to generate a plurality of adjusted optical sensing signals; and a light emitting diode a body control unit, configured to adjust the backlight module according to the comparison table, the plurality of adjusted optical sensing signals, and the temperature sensing signal Several primary colors of the plurality of emission luminance; and the same color-sequential display driving controller for generating a synchronization signal according to an image data, the synchronization signal line corresponding to the backlight module of the plurality of types of display a preset color sequence when the primary color is used; and a display panel for displaying the image data according to the plurality of light-emitting brightnesses adjusted by the light-emitting diode control unit. The color sequential display device of claim 1, wherein the LED control unit queries the comparison table for a plurality of standard brightnesses according to a temperature detected by the temperature sensing signal and the plurality of primary colors. Comparing the plurality of standard brightnesses with the plurality of detected brightnesses represented by the plurality of adjusted light sensing signals to confirm whether the plurality of detected brightnesses are respectively lower than the plurality of standard brightnesses; wherein When the brightness is lower than a corresponding standard brightness, the LED control unit raises the brightness of the backlight module corresponding to one of the primary colors of the detected brightness to not lower than the standard brightness. The color sequential display of claim 1, wherein the light sensor detects a plurality of light-emitting luminances corresponding to the plurality of primary colors by the time-sharing detection mechanism to generate the plurality of light-sensing The light sensor is further configured to detect the plurality of ambient light levels to generate a plurality of ambient light brightness signals; the backlight module further includes a backlight module driving unit for controlling the light emitting diode control unit The plurality of illuminating brightnesses are adjusted to control the backlight module to display the plurality of primary colors. The color sequential display according to claim 1, further comprising: a data line driving unit, configured to display the image data provided by the driving controller according to the color sequence display and the preset color sequence to drive the display panel to Displaying on the display panel corresponding to the plurality of primary colors and the image data; and a gate line driving unit for controlling the gate line on the display panel to operate the display panel. The color sequential display of claim 1, wherein the light sensor detects a plurality of ambient light levels corresponding to the plurality of primary colors by a time-sharing detection mechanism and the preset color sequence, and correspondingly generates the a plurality of ambient light luminance signals; and wherein the comparison table stores a plurality of target luminance values corresponding to the plurality of primary colors of the backlight module, and a plurality of standard luminances corresponding to the temperature. The color sequential display of claim 1, wherein the color sequential display further comprises: an ambient light sensor for detecting an external correspondence of the color sequential display with the predetermined color sequence by a time sharing detection mechanism The plurality of ambient light levels of the plurality of primary colors are used to generate the plurality of ambient light luminance signals; wherein the backlight module further comprises: a backlight module driving unit configured to be adjusted according to the LED control unit The plurality of illuminating brightnesses provide a light source to the display panel; The timing controller further includes: a grayscale value statistical unit configured to receive, by the color sequential display driving controller, a plurality of grayscale values corresponding to the plurality of primary colors in the image data; and the ambient light luminance calculating unit And calculating, according to the plurality of grayscale values and the plurality of ambient light luminance signals, a plurality of ambient lights of the backlight module through the display panel, and calculating the plurality of colors outside the color sequential display The brightness of the ambient light is filtered through the plurality of intensities of the display panel to filter out portions of the plurality of optical sensing signals that are originally affected by the brightness of the plurality of ambient light; wherein the comparison table stores the backlight module corresponding to the backlight module a plurality of target brightness values of the plurality of primary colors and a plurality of standard brightnesses corresponding to the temperature. The color sequential display according to claim 6, wherein the brightness of each primary color ambient light calculated by the ambient light brightness calculating unit is transmitted through the display panel (the primary color ambient light brightness)* (the display panel A panel penetration rate** (one grayscale value detected by the grayscale value statistics unit* the number of pixels on the display panel)/(one resolution of the display panel). The color sequential display of claim 1, wherein the backlight module comprises: a light sensor array, comprising a plurality of light sensors for detecting that the backlight module is used corresponding to the plurality of primary colors The plurality of light-emitting luminances are used to generate a plurality of light-sensing signals and used to detect the backlight module a plurality of ambient light levels to generate a plurality of ambient light brightness signals; a temperature sensor array comprising a plurality of temperature sensors for detecting a temperature of the backlight module to generate a temperature sensing signal; and a backlight mode a driving unit, configured to provide a light source to the display panel according to the plurality of brightnesses adjusted by the LED control unit; wherein the timing controller further comprises: a grayscale value statistical unit for using the color The sequence display driving controller receives a plurality of grayscale values corresponding to the plurality of primary colors in the image data; and the ambient light luminance calculating unit is configured to generate the complex number according to the plurality of grayscale values and the light sensor array The ambient light luminance signal adjusts the plurality of optical sensing signals generated by the optical sensor array to filter out portions of the plurality of optical sensing signals generated by the optical sensor array that are originally affected by the brightness of the plurality of ambient light Wherein the comparison table stores a plurality of target brightness values corresponding to the plurality of primary colors of the backlight module, and corresponding to the temperature sensor array detecting The temperature of a plurality of standard brightness. The color sequential display of claim 1, wherein the comparison table stores at least one target brightness value corresponding to the at least one primary color of the backlight module, and one standard brightness used corresponding to the temperature. A color sequential display comprising: a backlight module comprising: a light sensor for detecting a plurality of light-emitting luminances corresponding to the plurality of primary colors to generate a plurality of light-sensing signals; and a temperature sensor for detecting a temperature of the backlight module to generate a temperature sensing signal; a microprocessor storing a comparison table, the microprocessor is configured to receive a plurality of ambient light brightness signals, the plurality of light sensing signals generated by the light sensor and the temperature sensor The temperature sensing signal is used to adjust the plurality of optical sensing signals according to the plurality of ambient light brightness signals to filter out portions of the plurality of optical sensing signals that are originally affected by the brightness of the plurality of ambient lights to generate a plurality of adjusted optical sensing signals, and configured to adjust the plurality of primary colors displayed by the backlight module according to the comparison table, the plurality of adjusted optical sensing signals, and the temperature sensing signal; and a color sequential display driving controller, The method is configured to generate a synchronization signal according to an image data, where the synchronization signal corresponds to one of the preset color sequences when the backlight module displays the plurality of primary colors; and a display surface For displaying the image data based on the microprocessor to adjust the plurality of light emission luminance. The color sequential display according to claim 10, wherein the microprocessor queries the plurality of standard brightnesses in the comparison table according to the temperature sensing signal and the plurality of adjusted light sensing signals, and the plurality of standard brightnesses are obtained. Comparing with the plurality of illuminating brightnesses to confirm whether the plurality of illuminating brightnesses are respectively lower than the plurality of standard brightnesses; When the brightness of the light is lower than a corresponding standard brightness, the microprocessor fine-tunes the brightness of the light to not lower than the standard brightness. The color sequential display of claim 10, wherein the backlight module further comprises: a backlight module driving unit, configured to control the backlight module to display the plurality of primary colors adjusted by the microprocessor. The color sequential display according to claim 10, further comprising: a data line driving unit, configured to display the image data provided by the driving controller according to the color sequence display and the preset color sequence to drive the display panel to Displaying on the display panel corresponding to the plurality of primary colors and the image data; and a gate line driving unit for controlling the gate line on the display panel to operate the display panel. The color sequential display of claim 10, wherein the light sensor is further configured to detect the plurality of ambient light levels to generate the plurality of ambient light brightness signals. The color sequential display of claim 10, wherein the comparison table stores at least one target brightness value corresponding to the at least one primary color of the backlight module, and one standard brightness used corresponding to the temperature. A method for adjusting a brightness of a backlight module includes: detecting a temperature of a backlight module; and querying a comparison table according to the temperature and a plurality of target brightness values used by the color sequence display including the backlight module In order to find a plurality of standard brightnesses; detecting a plurality of primary colors displayed by the backlight module according to a time-sharing detection mechanism and a preset color sequence of the color-sequence display; detecting the backlight according to a time-sharing mechanism The module corresponds to a plurality of ambient light levels of the plurality of primary colors, and generates a plurality of ambient light brightness signals; and the plurality of primary colors displayed by the backlight module are adjusted according to the plurality of ambient light brightness signals, and then compared with the plurality of standard brightnesses. And adjusting a plurality of primary colors displayed by the backlight module according to comparing the plurality of primary colors with the standard brightness. The method of claim 16, wherein the plurality of primary colors displayed by the backlight module are adjusted according to the result of comparing the plurality of primary colors with the standard brightness: when the backlight module corresponds to one of the primary colors When the brightness is lower than a standard brightness, the brightness adjustment of the backlight module corresponding to the primary color is raised to not lower than the standard brightness. The method of claim 16, further comprising: adjusting the plurality of primary colors displayed by the backlight module according to the plurality of ambient light luminance signals to filter out the plurality of primary colors displayed by the backlight module by the plural The part affected by ambient light brightness. The method of claim 16, further comprising: calculating a plurality of ambient light of the backlight module through a display according to a grayscale value used by the color sequential display and the plurality of primary colors displayed by the backlight module a plurality of ambient light intensities of the panel; and filtering, according to the plurality of ambient light intensities, portions of the plurality of primary colors displayed by the backlight module that are originally affected by the brightness of the plurality of ambient lights. The method of claim 19, wherein the ambient light intensity of each of the primary color ambient light passes through the ambient light intensity of the display panel is (the primary color ambient light brightness)* (one panel transmittance of the display panel)* (the color The gray scale value used by the sequential display * the number of pixels on the display panel) / (one resolution of the display panel). The method of claim 16, wherein the comparison table stores the plurality of standard brightnesses, and the plurality of standard brightnesses are used when the backlight module corresponds to the plurality of primary colors and a temperature.