TWI739322B - Color calibrating auxiliary module and color calibrating method - Google Patents

Abstract

A color calibrating auxiliary module is detachably disposed on a display having a display surface. The color calibrating auxiliary module includes a light shielding plate and a light source. The light shielding plate is disposed around the display surface and forms an accommodation space with respect to the display surface. The light source is disposed on the light shielding plate and used to emit simulated light to illuminate the accommodating space.

Description

Color correction auxiliary module and color correction method thereof

The present invention relates to a correction module and a correction method thereof, and more particularly to a color correction auxiliary module and a color correction method thereof.

In order to make the monitor display more realistic colors, a color corrector is usually used to adjust the display color of the monitor. However, at the same time of color correction, ambient light may affect the accuracy of color correction. Therefore, proposing a new color correction auxiliary module to improve the aforementioned problems is one of the goals of the industry in the art.

The present invention relates to a color correction auxiliary module and a color correction method thereof, which can improve the aforementioned problems.

According to an embodiment of the present invention, a color correction auxiliary module is provided. The color correction auxiliary module is detachably arranged on a display, the display has a display surface, and the color correction auxiliary module includes a light-shielding plate and a first light source. The light-shielding plate is arranged around the display surface and forms an accommodating space relative to the display surface. The first light source is arranged on the light-shielding plate and used for emitting a simulated light to irradiate the accommodating space.

According to another embodiment of the present invention, a display device is provided. The display device includes a display, a color correction auxiliary module, a color corrector and a controller. The display is used for displaying a picture light. The color correction auxiliary module is detachably arranged on the display. The color correction auxiliary module is detachably arranged on a display, the display has a display surface, and the color correction auxiliary module includes a light-shielding plate and a first light source. The light-shielding plate is arranged around the display surface and forms an accommodating space relative to the display surface. The first light source is arranged on the light-shielding plate and used for emitting a simulated light to irradiate the accommodating space. When the color correction auxiliary module is not configured on the display, the color corrector is used to detect a mixed light color information of a mixed light of the picture light and an ambient light. The controller is used to: obtain a picture light color difference information between the mixed light color information and a selected one of the simulated light color information; obtain a difference value between the picture light color difference information and a picture light color information; and , According to the difference value, correct the color of the screen light of the display.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

100: display device

110: display

110s: display surface

120: Color correction auxiliary module

121: Shading plate

121e1: first side

121e2: second side

121e3: third side

122: first light source

123: second light source

124: third light source

130: color corrector

130s: Glossy surface

131: Color Perceptron

140: Controller

L1, L1’: Screen light

L2: Simulated light

L3: Ambient light

L3’: Mixed light

M1: Screen light color information

M1a: Selected analog light color information

M2: Simulated light color information

M3’: Mixed light color information

△M1: Screen light color difference information

SP1: Housing space

S110~S130, S210~S240: steps

FIG. 1 is a schematic diagram of a display device according to an embodiment of the invention.

FIG. 2A is a schematic diagram of the color sensor of the color corrector of FIG. 1 detecting the simulated light color information of the simulated light.

FIG. 2B is a schematic diagram of the color sensor of the color corrector of FIG. 1 detecting the image light color information of the image light.

Figure 3 shows a flow chart of collecting color information using the color correction auxiliary module and color corrector of Figure 1.

FIG. 4 is a schematic diagram of the display device of FIG. 1 with the shading plate and light source removed.

FIG. 5 is a schematic diagram of the color sensor of the color corrector of FIG. 4 detecting a mixed light color information of the mixed light of the screen light and the ambient light.

Fig. 6 shows a flow chart of using the display device shown in Fig. 4 to calibrate the screen color.

Please refer to Figures 1 and 2A~2B. Figure 1 shows a schematic diagram of a display device 100 according to an embodiment of the present invention. Figure 2A shows the color sensor 131 of the color corrector 130 in Figure 1 for detecting analog light. A schematic diagram of the simulated light color information M2 of L2, and FIG. 2B shows a schematic diagram of the color sensor 131 of the color corrector 130 of FIG. 1 detecting the screen light color information M1 of the screen light L1.

The display device 100 includes a display 110, a color correction auxiliary module 120, a color corrector 130 and a controller 140.

As shown in Figures 1 to 2B, the display 110 has a display surface 110s, wherein the display surface 110s can emit screen light L1. The color correction auxiliary module 120 is detachably disposed on the display 110. The color correction auxiliary module 120 includes a light-shielding plate 121 and at least one light source. The embodiment of the present invention takes three light sources: the first light source 122, the second light source 123, and the third light source 124 as examples. However, the embodiment of the present invention is not limited The number of light edges. The first light source 122, the second light source 123, and the third light source 124 may be disposed on the light-shielding plate 121 and used to emit the simulated light L2 to irradiate the accommodating space SP1. The light-shielding plate 121 is disposed around the display surface 110s, and forms an accommodating space SP1 opposite to the display surface 110s.

The first light source 122, the second light source 123, and the third light source 124 can surround the display surface 110s, so that the light emitting pattern of the first light source 122, the second light source 123 and the third light source 124 can simulate (or approach) an ambient light pattern. The ambient light mode herein is, for example, the illumination mode of the display 110 by sunlight, indoor lighting, light from peripheral electronic devices, or light other than the screen light L1. In an embodiment, the first light source 122, the second light source 123, and the third light source 124 may be configured in a U shape. For example, the first light source 122 and the second light source 123 are respectively arranged adjacent to the first side 121e1 and the second side 121e2 of the light shielding plate 121, and the third light source 124 is arranged adjacent to the third side 121e3 of the light shielding plate 121. The third side 121e3 extends between the first side 121e1 and the second side 121e2. For example, the third side 121e3 may be substantially perpendicular to the first side 121e1 and/or the second side 121e2. In another embodiment, the color correction auxiliary module 120 can omit at least one of the second light source 123 and the third light source 124, and the first light source 122 can be reconfigured on the second side 121e2 or the third side 121e3. The embodiment of the present invention does not limit the number and/or configuration of the light source, as long as the light source can simulate the illumination mode of the ambient light. In addition, although not shown, the first light source 122, the second light source 123, and the third light source 124 can be connected to a port (for example, a USB port) of the display 110 through at least one connection line, wherein the port can be connected through the display 110 The internal circuit is electrically connected to the controller 140.

In this embodiment, the color corrector 130 may be configured on the display 110. However, in another embodiment, the color corrector 130 may be disposed on the light-shielding plate 121 Above, in this example, the color corrector 130 becomes a sub-component of the color correction auxiliary module 120. As shown in Figure 2A, the color corrector 130 includes a color sensor 131 and has a light-incident surface 130s. The light-incident surface 130s faces the display surface 110s. The light-incident surface 130s can selectively receive the light simulation light L2 and the screen light L1. At least one, the color sensor 131 detects the color information of the received light accordingly.

The controller 140 is configured in the display 110, for example. In another embodiment, the controller 140 may be configured on the color correction auxiliary module 120. The controller 140 is electrically connected to the display 110, the first light source 122, the second light source 123, the third light source 124, and the color corrector 130, and is used to: (1) control the display 110 to emit or not emit the screen light L1; (2) ). Control the light color of the screen light L1; (3). Control the light source to emit or not emit the analog light L2; and (4). Store the light color information detected by the color corrector 130.

When the color correction auxiliary module 120 is disposed on the display 110, the color corrector 130 can detect the color information of the screen light L1 and the color information of the analog light L2 for future color correction. The following is further illustrated with Figure 3 as an example.

Please refer to FIG. 3, which shows a flowchart of collecting color information by using the color correction auxiliary module 120 and the color corrector 130 of FIG. 1. Steps S110 to S120 are, for example, completed by the controller 140 controlling the light emitting mode of the display 110 and controlling the light emitting mode of the light source.

In step S110, as shown in Figure 2A, the display 110 does not emit screen light L1 and the light sources (the first light source 122, the second light source 123, and the third light source) When at least one of the sources 124 emits the simulated light L2, the color sensor 131 of the color corrector 130 detects the simulated light color information M2 of the simulated light L2.

In step S120, when the display 110 emits the image light L1 and the light sources (the first light source 122, the second light source 123, and the third light source 124) do not emit the analog light L2, the color sensor 131 of the color corrector 130 detects the image light L1 picture light color information M1. In the embodiment, the light color of the simulated light L2 in step S110 is consistent with the light color of the screen light L1 in step S120. In the embodiment, the light colors of the simulated light L2 and the screen light L1 are the light colors of a primary color of a color system, such as red light, green light, or blue light. However, the embodiment of the present invention is not limited to the RGB color system.

Steps S110 to S120 in FIG. 3 are the process of collecting a light color (such as the light color of a color coordinate point on a color system). In another embodiment, steps S110 to S120 in FIG. 3 can be repeatedly used to collect color information of several different light colors (such as light colors of several color coordinate points on a color system). For example, in step S110, the color sensor 131 detects the corresponding number of simulated light color information M2 under several simulated lights L2 of different light colors; in step S120, under the several screen lights L1 of different light colors Next, the color sensor 131 detects the corresponding plurality of screen light color information M1, and then the controller 130 stores the screen light color information M1 and the simulated light color information M2. Take the red-green-blue (RGB) color system as an example. Steps S110~S120 in Figure 3 can be used repeatedly to collect several grayscale values for red light (such as 256 levels) and several grayscale values for green light (such as The analog light color information M2 and the screen light color information M1 are all permutations and combinations of several gray-level values (such as 256 levels) of blue light.

In step S130, the controller 140 stores the collected simulated light color information M2 and screen light color information M1 for future color correction. In addition, the simulated light color information M2 and the screen light color information M1 can be stored in the controller 140, or stored in a memory (not shown) electrically connected to the controller 140.

The aforementioned process in Figure 3 can be executed at the initial stage of the display 110 (for example, the first time the display 110 is turned on after the newly purchased display 110, or the first few times after the newly purchased display 110 is turned on and used). The aforementioned process in Figure 3 can be executed in the factory before entering the consumer market, or executed by consumers after entering the consumer market, but the embodiments of the present invention are not limited thereto. In another embodiment, the process shown in Figure 3 can also be executed after the display 110 has been used for a period of time (for example, several days, weeks, months, or years).

Please refer to FIGS. 4-6. FIG. 4 shows a schematic diagram of the display device 100 in FIG. 1 with the light shield 121 and light source removed, and FIG. 5 shows the detection by the color sensor 131 of the color corrector 130 in FIG. 4 A schematic diagram of a mixed light color information M3' of the mixed light L3' of the screen light L1' and the ambient light L3, and FIG. 6 is a flow chart of applying the display device 100 of FIG. 4 to correct the screen color.

After the display 110 is used for a period of time or due to some factors, the color of the image light L1' emitted by the display surface 110s of the display 110 will be different from the color information of the image light L1 collected in FIG. 3, for example, compared to the image The light L1 and the screen light L1' have various display screen quality changes or deteriorations, such as color shift or chromatic aberration. However, the color correction method of the embodiment of the present invention can improve the aforementioned display image quality change problem, so that the corrected display quality can be restored as much as possible based on the third Color information collected by the process of the graph. Please follow the instructions below.

The color correction process in FIG. 6 can be executed when the color correction auxiliary module 120 is not disposed on the display 110; in other words, the color correction auxiliary module 120 is not required when the color correction process in FIG. 6 is executed.

In step S210, the color sensor 131 of the color corrector 130 detects the mixed light color information M3' of the mixed light of the screen light L1' and the ambient light L3. The ambient light L3 is, for example, sunlight, indoor lighting, light from peripheral electronic devices, or other light rays other than the screen light L1'.

In step S220, the controller 140 obtains the screen light color difference information ΔM1 between the mixed light color information M3' and the selected simulated light color information M2a. In one embodiment, the controller 140 selects the analog light color information M2 closest to and greater than the mixed light color information M3′ from the stored analog light color information M2 as the selected analog light color information M2a .

In step S230, the controller 140 calculates the screen light color difference information ΔM1 and the screen light color information M1, and obtains the difference value between the screen light color difference information ΔM1 and the screen light color information M1.

In step S240, the controller 140 corrects the color of the screen light L1' of the display 110 according to the difference value. For example, the controller 140 adds or subtracts the difference value from the color information of the screen light L1', so that the color information of the screen light L1' after the compensation for the difference value is close to the color information of the screen light L1.

It can be seen from steps S210 to S240 that the shading plate 121 and the light source (the first light source 122, the second light source 123 and the third light source 124). The controller 140 performs color correction on the screen light L1 completely based on the mixed light color information M3' detected by the color corrector 130 and the simulated light color information M2 and the screen light color information M1 stored by the controller 140, Make the screen light L1' return/close to the color information collected based on the process in Figure 3. That is, the color information of the corrected screen light L1' is restored/closed to the color information of the aforementioned screen light L1. Such a color correction process does not need to additionally install a light shield 121 and light sources (the first light source 122, the second light source 123, and the third light source 124) on the display 110, and fast color correction can be realized through computer calculation.

In the color information collection process of the above embodiment, the simulated light color information M2 and the screen light color information M1 stored for the first time are used as the calibration reference. However, in other embodiments, the color information collection process of Figure 3 can be used to collect the color information (analog light color information M2 and screen light color information M1) of the display 110 at different times, and the controller 140 can collect the latest information The color information (analog light color information M2 and screen light color information M1) replaces the previously stored color information, and uses the latest collected color information as a reference for correcting the screen color of the display 110 in the future.

In summary, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.

100: display device

110: display

120: Color correction auxiliary module

121: Shading plate

121e1: first side

121e2: second side

121e3: third side

122: first light source

123: second light source

124: third light source

130: color corrector

140: Controller

Claims (8)

A color correction auxiliary module is detachably arranged on a display. The display has a display surface. The color correction auxiliary module includes: a light-shielding plate arranged around the display surface and forming a housing relative to the display surface Space; and a first light source arranged on the shading plate and used to emit a simulated light to irradiate the accommodating space. The color correction auxiliary module further includes: a color corrector arranged on the shading plate Above, the color corrector has a light-incident surface facing the display surface, the light-incident surface selectively receives the analog light and an image light and is used to detect the color information of the received light, wherein the display surface emits The picture is light. The color correction auxiliary module described in the first item of the scope of patent application, wherein the light color of the analog light is the light color of a primary color light of a color system. For example, the color correction auxiliary module described in claim 1 further includes: a second light source; wherein, the first light source and the second light source are respectively arranged on a first side and a second side of the shading plate side. A display device includes: a display having a display surface and used for displaying a picture light; a color correction auxiliary module, detachably disposed on the display and including: A light-shielding plate arranged around the display surface and forming an accommodating space relative to the display surface; and a first light source arranged on the light-shielding plate and used for emitting a simulated light to irradiate the accommodating space; and A color corrector, when the color correction auxiliary module is not configured on the display, the color corrector is used to: detect a mixed light color information of a mixed light of the picture light and an ambient light; a controller, Used to: obtain a picture light color difference information between the mixed light color information and a selected one of simulated light color information; obtain a difference value between the picture light color difference information and a picture light color information; and basis The difference value corrects the color of the screen light of the display. For the display device described in item 4 of the scope of patent application, when the color correction auxiliary module is arranged on the display, the color corrector is further used for: when the display does not emit the screen light and the first light source emits Under the simulated light, detecting the simulated light color information of the simulated light; and detecting the screen light color information of the screen light when the display emits the screen light and the first light source does not emit the simulated light; wherein , The controller is further used to store the simulated light color information and the screen light color information. For the display device described in item 5 of the scope of patent application, the color corrector is further used to: detect the corresponding plurality of simulated light color information under different light colors of the simulated light; and under different light colors Under a plurality of colors of the screen light, detect the corresponding plurality of the screen light color information; wherein, the controller is further used to: store the simulated light color information and the screen light color information; and from the simulation Among the light color information, the selected simulated light color information that is closest to and greater than the mixed light color information is selected. For the display device described in item 4 of the scope of patent application, when the color correction auxiliary module is arranged on the display, the color corrector is further used for: when the display does not emit the screen light and the first light source emits Under the simulated light, detecting the simulated light color information of the simulated light; and when the display emits the picture light and the first light source does not emit the simulated light, detecting the picture light color information of the picture light; The controller is further used for storing the simulated light color information and the screen light color information. For the display device described in item 7 of the scope of patent application, the color corrector is further used to: detect the corresponding plurality of analog light color information under different light colors; Under a plurality of the screen lights, detect the corresponding plurality of the screen light color information; the controller is further used to: store the simulated light color information and the screen light color information; and From the simulated light color information, the selected simulated light color information that is closest to and greater than the mixed light color information is selected.

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