Display device

Abstract

To provide a display device.SOLUTION: A display device comprises a color temperature sensor, a computing unit, a gamma unit, and a display panel. The color temperature sensor is used to sense the color temperature of ambient light and output target white point information. The computing unit is coupled to the color temperature unit for calculating adjustment factors corresponding to red, green, and blue colors on the basis of the target white point information. The gamma unit is coupled to the computing unit for receiving the adjustment factors and adjusting gamma curves corresponding to the red, green, and blue colors. The display panel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The display panel is coupled to the gamma unit for receiving an image signal. The display panel provides data signals corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel on the basis of the gamma curves corresponding to the red, green, and blue colors.SELECTED DRAWING: Figure 2A

Description

[Technical Field]

[0001] The present invention relates to a display device, and more particularly to a display device that adjusts display effects according to ambient light. [Background technology]

[0002] In certain applications, the display device suffers from intense specular reflections that reduce the visibility of the screen and make the information difficult to read. Summary of the Invention [Problem to be solved by the invention]

[0003] In the past, a special coating layer was applied to the display screen, but a small amount of reflected light and glare still occurred, preventing users from experiencing the same experience as with paper. In addition, the color temperature of the ambient light also affected the display effect of the display. Conventional display devices were unable to provide different display effects in response to changes in the color temperature of the ambient light, which sometimes caused users to feel a lack of immersion.

[0004] Therefore, the present inventors believed that the above drawbacks could be improved, and as a result of extensive research, they came up with the proposal of the display device of the present invention, which effectively improves the above problems through rational design.

[0005] The present invention was made by the inventors through extensive research in view of the above problems, and has an object to provide a display device. [Means for solving the problem]

[0006] To achieve the above object, one embodiment of the present invention provides a display device comprising a color temperature sensor, a calculation unit, a gamma unit, and a display panel. The color temperature sensor is used to detect the color temperature of ambient light and output target white point information. The calculation unit is connected to the color temperature sensor and used to calculate three adjustment coefficients corresponding to red, green, and blue based on the target white point information. The gamma unit is connected to the calculation unit and used to receive the adjustment coefficients and adjust gamma curves corresponding to red, green, and blue. The display panel includes red, green, and blue subpixels, and is connected to the gamma unit and used to receive image signals. The display panel is used to provide data signals corresponding to the red, green, and blue subpixels based on the gamma curves corresponding to red, green, and blue.

[0007] At least the following points will become clear from the description and drawings to be described later. [Brief explanation of the drawings]

[0008] [Figure 1A] 1 is a schematic diagram showing a display device according to a first embodiment of the present invention. [Figure 1B] FIG. 2 is a schematic diagram showing an operation unit of the display device according to the first embodiment of the present invention during an operation. [Figure 2A] FIG. 10 is a schematic diagram showing a display device according to a second embodiment of the present invention. [Figure 2B] FIG. 10 is a schematic diagram showing an operation unit of a display device according to a second embodiment of the present invention during an operation. [Figure 2C] 3 is a schematic diagram showing the chromaticity of a display panel according to an embodiment of the present invention. [Figure 2D] FIG. 2 is a schematic diagram illustrating a gamma curve according to an embodiment of the present invention. [Figure 2E] 5 is a schematic diagram showing the brightness of a backlight according to an embodiment of the present invention. FIG. [Figure 3A] FIG. 10 is a schematic diagram showing a display device according to a third embodiment of the present invention. [Figure 3B] 2 is a circuit diagram showing one of a red subpixel, a green subpixel, and a blue subpixel according to an embodiment of the present invention. FIG. [Figure 3C] 4 is a signal timing diagram corresponding to one of the red, green, and blue subpixels according to an embodiment of the present invention; [Figure 4A] FIG. 10 is a schematic diagram showing a display device according to a fourth embodiment of the present invention. [Figure 4B] FIG. 10 is a schematic diagram showing an operation unit of a display device according to a fourth embodiment of the present invention during an operation. [Figure 5] FIG. 10 is a schematic diagram showing a display device according to a fifth embodiment of the present invention. [Figure 6A] FIG. 10 is a schematic diagram showing a display device according to a sixth embodiment of the present invention. [Figure 6B] 1 is a gamma curve showing a display panel according to an embodiment of the present invention. [Figure 7] FIG. 10 is a schematic diagram showing a display device according to a seventh embodiment of the present invention. [Figure 8A] 3A and 3B are schematic diagrams illustrating color points of a white screen displayed by a display device according to an embodiment of the present invention under different color temperatures of ambient light; [Figure 8B] 3A and 3B are schematic diagrams illustrating color points of a white screen displayed by a display device according to an embodiment of the present invention under different color temperatures of ambient light; [Figure 8C] 3A and 3B are schematic diagrams illustrating color points of a white screen displayed on a display device according to an embodiment of the present invention under different color temperatures of ambient light; [Figure 9A] 3A and 3B are schematic diagrams illustrating color points of original content displayed on a display device according to an embodiment of the present invention under different color temperatures of ambient light. [Figure 9B] 3A and 3B are schematic diagrams illustrating color points of original content displayed on a display device according to an embodiment of the present invention under different color temperatures of ambient light. [Figure 9C] 3A and 3B are schematic diagrams illustrating color points of original content displayed on a display device according to an embodiment of the present invention under different color temperatures of ambient light. [Figure 10A] 1 is a schematic diagram illustrating a display device according to an embodiment of the present invention. [Figure 10B] FIG. 10 is a schematic diagram showing the configuration of a display device according to another embodiment of the present invention. [Figure 10C] FIG. 10 is a schematic diagram showing the configuration of a display device according to still another embodiment of the present invention. [Figure 11A] FIG. 2 is a schematic diagram illustrating a protective layer according to an embodiment of the present invention. [Figure 11B] 1 is a schematic diagram illustrating an anti-glare layer according to an embodiment of the present invention. [Figure 11C] FIG. 10 is a schematic diagram showing the configuration of a protective layer according to another embodiment of the present invention. [Figure 11D] FIG. 10 is a schematic diagram showing the configuration of an anti-glare layer according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention. Furthermore, not all combinations of features described in the embodiments are necessarily essential to the solution of the invention. Where possible, the same reference numerals will be used in the drawings and the specification to indicate the same or similar parts.

[0010] Those skilled in the art will understand that manufacturers of sensing devices may refer to the same components by different names. This specification does not distinguish between components that have the same function but are referred to by different names. In the following specification and claims, terms such as "comprises," "has," and "has," are open terms and are understood to mean "including, but not limited to."

[0011] The terms "about," "substantially," or "approximately" are generally understood to mean within 10% of a given value or range, or within 5%, 3%, 2%, 1%, or 0.5% of a given value or range.

[0012] The ordinal numbers such as "first" and "second" used in this specification and claims are used to modify elements, and do not mean or indicate that the element (or elements) have an ordinal number, nor do they indicate the order of a particular element relative to other elements or the order of a manufacturing method. These ordinal numbers are merely used to clearly distinguish an element with a name from another element with the same name. The same terms are not always used in the claims and the specification, and therefore, an element called a first element in the specification may be called a second element in the claims.

[0013] As used herein, terms such as "a given range is a first number to a second number" or "a given range is within a first number to a second number" indicate that the given range includes the first number, the second number, and any other numbers therebetween.

[0014] The display device according to the present invention may be applied to electronic devices, including, but not limited to, exposure devices, printers, 3D printers, in-vehicle devices, imaging devices, assembly devices, backlight devices, antenna devices, bonding devices, touch electronic devices, curved electronic devices, and free-form electronic devices. Examples of display devices include, but are not limited to, liquid crystal, light-emitting diodes, fluorescence, phosphorescence, other suitable display media, or combinations thereof. The display device may be a non-emissive display device or a self-emissive display device. The antenna device may be a liquid crystal-type antenna device or a non-liquid crystal-type antenna device. The detector may be a detector capacitor, a light beam, a thermal energy, or an ultrasonic detector, but are not limited thereto. Examples of bonding devices include, but are not limited to, display bonding devices and antenna bonding devices. The electronic device may be a combination of any of the above arrangements, but are not limited thereto. The electronic device may also be a bendable or flexible electronic device. It should be noted that the electronic device may be a combination of any of the above arrangements, and the present invention is not limited thereto. The outer shape of the electronic device may be rectangular, circular, polygonal, curved-edge, or any other suitable shape. The electronic device may also include a driving system, a control system, a light source system, a peripheral system supporting a display device such as a shelf system, an antenna system, or a bonding system.

[0015] The following embodiments are other embodiments that are completed by substituting, rearranging, or combining features of multiple different embodiments without departing from the spirit of the present invention. The features between each embodiment can be freely mixed and combined as long as they do not deviate from the spirit of the invention or conflict with each other.

[0016] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. These terms are, for example, terms defined in commonly used dictionaries, and are understood to have meanings consistent with the context of the relevant art and the present invention, and should not be interpreted in an idealized or overly formal manner unless specifically defined in the embodiments of the present invention.

[0017] Furthermore, terms such as "adjacent" in the specification and claims are used to describe proximity to one another, and the adjacent elements may or may not be in contact with each other.

[0018] Furthermore, the terms "when..." and "when..." in the present invention indicate aspects such as "at a specific point in time, before, or after," and are not limited to simultaneous occurrence. The terms "installed on..." and similar terms in the present invention indicate the corresponding positional relationship between two components, and do not limit whether the two components are in contact with each other unless otherwise specified. Furthermore, when multiple effects are described in the present invention, the use of the word "or" between the effects indicates that the effects exist independently, but does not exclude the possibility that multiple effects may exist simultaneously.

[0019] (First Example) Fig. 1A is a schematic diagram showing a display device 1 according to a first embodiment of the present invention, and Fig. 1B is a schematic diagram showing an arithmetic unit 20 of the display device according to the first embodiment of the present invention during an arithmetic operation.

[0020] As shown in FIG. 1 , the display device 1 may include a color temperature sensor 10, a calculation unit 20, a gamma unit 30, a display panel 40, and a backlight unit 50. The calculation unit 20 is connected to the color temperature sensor 10. The display panel 40 is connected to the calculation unit 20 and the gamma unit 30. The calculation unit 20 may include a tone reproduction curve (TRC) conversion module 21, a color space conversion module 22, a white point conversion module 23, a color space inverse conversion module 24, and a TRC inverse conversion module 25. The display panel 40 may include an array region (not shown) consisting of at least one red subpixel 61, at least one green subpixel 62, and at least one blue subpixel 63. It should be noted that the number of subpixels 61-63 shown in the drawing is not limited, and the present invention may actually include a greater number of subpixels 61-63. In some embodiments, the display panel 40 may further include a driving unit 70. It should also be noted that the proportions of the components shown in the drawings do not represent the actual proportions.

[0021] Regarding the functions of the above components, in one embodiment, the color temperature sensor 10 detects the color temperature of ambient light and outputs target white point information based on the detected color temperature. For example, this can be achieved by the color temperature sensor 10 executing a predetermined algorithm, and the present invention is not limited thereto. The calculation unit 20 calculates three adjustment coefficients corresponding to red, green, and blue based on the target white point information. For example, the TRC conversion module 21 performs TRC conversion on a signal (e.g., an original image signal provided by a signal source) (see FIG. 1A), and the color space conversion module 22 converts the TRC-converted signal into a color point in a color space (see FIG. 1B). The white point conversion module 23 calculates multiple adjustment coefficients based on the target white point information and adjusts the color point using the adjustment coefficients. The color space inverse conversion module 24 can convert the adjusted color point into a new signal, and the TRC inverse conversion module 25 can perform TRC inverse conversion on the new signal to generate an image signal. The display panel 40 can receive the image signal and the gamma curve provided by the gamma unit 30, and the driving unit 70 of the display panel 40 can generate a data signal DN based on the image signal and the gamma curve, and transmit the data signal DN to the red subpixel 61, the green subpixel 62, and the blue subpixel 63. In one embodiment, the data signal DN can include three sub-signals corresponding to the red subpixel 61, the green subpixel 62, and the blue subpixel 63, respectively, but the present invention is not limited thereto.

[0022] In one embodiment, when a pure color screen is displayed on the display panel 40, the calculation unit 20 can obtain the color space information corresponding to the display panel 40 (for example, the color space information (X, Y, Z) Red The color space information (X, Y, Z) of a pure red screen is Green In the case of a pure green screen, the color space information (X, Y, Z) Blue A blue pure color screen in the above, and the color space information (X, Y, Z) White, respectively obtain a white pure color screen in the display panel 40. The color space conversion module 22 is used to convert the signal (e.g., the signal after TRC conversion) into a color point in the color space and provide color gamut information. The color space inverse conversion module 24 is used to convert the color point in the color space back into the TRC signal format. In addition, in one embodiment, the white point conversion module 23 is used to calculate an adjustment coefficient according to the target white point information and the color space information supported by the display panel 40. The adjustment coefficient can be regarded as the difference between the color temperature of the pure color screen displayed on the display panel 40 and the color temperature of the ambient light, but the present invention is not limited thereto.

[0023] In some embodiments, the arithmetic unit 20 may be, for example, a processing unit, a chip, or a system-on-chip (SOC), and the present invention is not limited thereto. The TRC conversion module 21, the color space conversion module 22, the white point conversion module 23, the color space inverse conversion module 24, the TRC inverse conversion module 25, or other functions may be implemented by the arithmetic unit 20 executing one or more algorithms 2, and the present invention is not limited thereto. Also, in some embodiments, the gamma unit 30 may be implemented in, for example, a timing control device (not shown), and the functions of the gamma unit 30 described herein may be performed by a processing unit (not shown) of the timing control device, and the present invention is not limited thereto. The backlight unit 50 may be, for example, a backlight panel, and the present invention is not limited thereto. In some embodiments, the gamma unit 30, the display panel 40, and / or the backlight unit 50 may be at least part of the display module 3, and the present invention is not limited thereto.

[0024] The operation of the computation unit 20 will now be described. As shown in Figures 1A and 1B, in one embodiment, a signal source (not shown) supplies the computation unit 20 with an original image signal (R in , G in , B in ) and the original image signal (R in , Gin , B in ) is the sub-signal R used for the red sub-pixel 61 in , the sub-signal G used for the green sub-pixel 62 in , and the sub-signal B used for the blue sub-pixel 63 in In one embodiment, the sub-signal R in , G in , B in correspond to red, green, and blue grayscale values, respectively, and the present invention is not limited thereto. The color temperature sensor 10 is used to detect the color temperature of the ambient light and output at least one of target white point information (e.g., (X', Y', Z') and (color temperature (hereinafter, referred to as CCT (correlated color temperature))), and the present invention is not limited thereto. The calculation unit 20 is used to obtain corresponding color space information when a pure color screen is displayed on the acquisition display panel 40, and to obtain an actual white point in the color space. The difference between the actual white point and the target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto) can be regarded as the difference between the color temperature displayed on the display panel 40 and the color temperature of the ambient light, and the present invention is not limited thereto. Next, the TRC conversion module 21 converts the original image signal (R', G', B') into a first converted signal (R', G', B'). in , G in , B in ) can be converted into a TRC conversion of the first converted signal (R', G', B'). Then, the color space conversion module 22 can convert the first converted signal (R', G', B') into a color point (X, Y, Z) in the color space supported by the display panel 40. Next, the white point conversion module 23 converts three adjustment coefficients K corresponding to red, green, and blue based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto). R , K. G , K. BThe white point conversion module 23 performs white point conversion on the actual white point based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto), and in the conversion process, adjusts the three adjustment coefficients K corresponding to red, green, and blue. R , K. G , K. B Then, the white point conversion module 23 converts the three adjustment coefficients K corresponding to red, green, and blue into R , K. G , K. B The color space inverse conversion module 24 converts the color points (X'', Y'', Z) into second conversion signals (R'', G'', B''). The TRC inverse conversion module 25 performs a TRC inverse conversion on the second conversion signals (R'', G'', B'') to generate an image signal (R'', G'', B'') for the display panel 40. out , G out , B out ) can be generated. Then, the driving unit 70 of the display panel 40 generates the image signal (R out , G out , B out ) and the gamma curve provided based on the gamma unit 30 can generate the data signals DN used for the red sub-pixels 61, green sub-pixels 62, and blue sub-pixels 63, respectively.

[0025] The operation of the arithmetic unit 20 generates the original image signal (R in , G in , B in ) generates a new image signal (R out , G out , B out ), and the color temperature of the screen displayed on the display panel 40 is brought closer to the color temperature of the ambient light, thereby improving the display quality of the display device 1.

[0026] In one embodiment, the color temperature conversion operation of the arithmetic unit 20 converts the original image signal (R in , G in , B in ) is converted, the color temperature of the display panel 40 is converted and lowered, and the number of colors displayed on the display panel 40 (color quantity) may decrease in accordance with the decrease in color temperature. In addition, the brightness of the backlight of the display panel 40 may also decrease in accordance with the decrease in color temperature. In addition, the image signal (R out , G out , B out ) sub-signal R out , G out , and B out The corresponding gamma curves are the same, and the present invention is not limited thereto.

[0027] This will help understand the first embodiment.

[0028] (Second Example) Fig. 2A is a schematic diagram showing a display device 1 according to a second embodiment of the present invention, and Fig. 2B is a schematic diagram showing an operation unit 20 of the display device according to the second embodiment of the present invention during an operation. Since the description of the embodiment of Fig. 1A is generally applicable to the embodiment of Fig. 2A, the following description will mainly focus on the differences.

[0029] As shown in FIG. 2A, the display device 1 may include a color temperature sensor 10, a calculation unit 20, a gamma unit 30, a display panel 40, and a backlight unit 50. The display panel 40 includes a red subpixel 61, a green subpixel 62, and a blue subpixel 63. The calculation unit 20 according to the embodiment of FIG. 2A may include a color space conversion module 22 and a white point conversion module 23, and is different from the display device shown in FIG. 1A in that the gamma unit 30 and the backlight unit 50 are connectable to the calculation unit 20. In addition, the image signal input to the display panel 40 may be an original image signal (R in , G in , B in ) may also be used.

[0030] Next, detailed operations of the display device 1 and the calculation unit 20 will be described. As shown in FIGS. 2A and 2B, in one embodiment, the color temperature sensor 10 detects the color temperature of the ambient light and outputs target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto). The calculation unit 20 can obtain corresponding color space information when a pure color screen is displayed on the display panel 40. Then, the color space conversion module 22 can search for an actual white point (not shown) from the corresponding color space of the display panel 40. Then, the white point conversion module 23 calculates three adjustment coefficients K corresponding to red, green, and blue based on the target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto). R , K. G , K. B , and brightness adjustment coefficient K L The white point conversion module 23 performs white point conversion (for example, used to search for the difference between the target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto) and the actual white point based on the target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto) and calculates the three adjustment coefficients K corresponding to red, green, and blue in the conversion process. R , K. G , K. B , and the brightness adjustment coefficient K L The signal source (not shown) outputs an original image signal (R in , G in , B in The calculation unit 20 can directly provide the three adjustment coefficients K corresponding to red, green, and blue to the gamma unit 30. R , K. G , K. B and the calculation unit 50 can provide the backlight unit 50 with a brightness adjustment coefficient K LThe gamma unit 30 can provide the three adjustment factors K corresponding to red, green, and blue. R , K. G , K. B The driving unit 70 can adjust the gamma curve based on the original image signal (R in , G in , B in ) and the adjusted gamma curve, the backlight unit 50 generates a data signal DN and provides the data signal DN to the red subpixel 61, the green subpixel 62, and the blue subpixel 63. The backlight unit 50 adjusts the brightness adjustment coefficient K L Based on this, the brightness of the backlight provided to the display panel 40 is adjusted.

[0031] Through the operation of the calculation unit 20, the gamma unit 30 can adjust the gamma curve based on the color temperature of the ambient light, and the backlight unit 50 can adjust the brightness of the backlight based on the color temperature of the ambient light, thereby improving the display quality of the display device 1 by bringing the color temperature of the screen displayed on the display panel 40 closer to the color temperature of the ambient light.

[0032] 2C is a schematic diagram showing the chromaticity of the display panel 40 according to an embodiment of the present invention. FIG. 2D is a schematic diagram showing a gamma curve according to an embodiment of the present invention. FIG. 2E is a schematic diagram showing the brightness of the backlight according to an embodiment of the present invention. These diagrams correspond to FIGS. 2A and 2B and are used to respectively show the changes in the chromaticity, gamma curve, and backlight brightness of the display panel 40 when the color temperature of the ambient light changes after the operation of the computing unit 20.

[0033] As shown in FIG. 2C, in this embodiment, in the operation process of the arithmetic unit 20, the original image signal (R in , G in , B in) are directly received by the display panel 40 without being converted, so that when the color temperature displayed on the display panel 40 is converted and reduced, the number of colors on the display panel 40 is maintained without being reduced. Also, as shown in FIG. 2D , after the operation of the calculation unit 20, the gamma unit 30 calculates the three adjustment coefficients K corresponding to red, green, and blue. R , K. G , K. B 2E, when the color temperature displayed on the display panel 40 is converted and reduced after the operation of the calculation unit 20, the backlight unit 50 adjusts the brightness of the backlight so that the brightness of the backlight of the display panel 40 remains unchanged, but the present invention is not limited thereto.

[0034] This will help understand the second embodiment.

[0035] (Third Example) The display device 1 according to the present invention may include different embodiments. Fig. 3A is a schematic diagram showing a display device 1 according to a third embodiment of the present invention. Since the description of the embodiment of Fig. 2A is generally applicable to the embodiment of Fig. 3A, the following description will mainly focus on the differences.

[0036] In the example of FIG. 3A, the display panel 40 is a self-emissive display panel, and the display device 1 may include a color temperature sensor 10, a calculation unit 20, a gamma unit 30, and a display panel 40. The display panel 40 includes a red sub-pixel 61, a green sub-pixel 62, and a blue sub-pixel 63. Each of the red sub-pixel 61, the green sub-pixel 62, and the blue sub-pixel 63 may include a self-emissive unit, which may be, for example, an organic light-emitting diode (OLED), but the present invention is not limited thereto. Similar to the embodiment of FIG. 2A, the calculation unit 20 in the embodiment of FIG. 3 may include a color space conversion module 22 and a white point conversion module 23, and the gamma unit 30 may be connected to the calculation unit 20. In addition, the original image signal (R in , G in , B in ) can be directly input to the display panel 40 without being converted. In addition, since the display panel 40 according to this embodiment is a self-luminous display panel, it does not need to include the backlight unit 50 according to the above-described embodiment.

[0037] Next, the operation of the calculation unit 20 will be described, and reference will be made to FIGS. 2B and 3A. In one embodiment, the color temperature sensor 10 can detect the color temperature of the ambient light and output target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto). The calculation unit 20 can obtain corresponding color space information when a pure color screen is displayed on the display panel 40. Then, the color space conversion module 22 can search for an actual white point from the corresponding color space of the display panel 40. Then, the white point conversion module 23 can calculate three adjustment coefficients K corresponding to red, green, and blue based on the target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto). R , K. G , K. B , and brightness adjustment coefficient K LThe white point conversion module 23 performs white point conversion on the actual white point based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto), and in the conversion process, the three adjustment coefficients K corresponding to red, green, and blue are used. R , K. G , K. B , and the brightness adjustment coefficient K L The signal source (not shown) supplies the original image signal (R in , G in , B in The calculation unit 20 can provide the gamma unit 30 with the three adjustment coefficients K corresponding to red, green, and blue. R , K. G , K. B and the computing unit 20 can provide the display panel 40 with a brightness adjustment factor K L The gamma unit 30 can provide the three adjustment coefficients K corresponding to red, green, and blue. R , K. G , K. B The driving unit 70 can adjust the gamma curve based on the original image signal (R in , G in , B in ) and the adjusted gamma curve, the display panel 40 generates a data signal DN and provides the data signal DN to the red subpixel 61, the green subpixel 62, and the blue subpixel 63. The display panel 40 also uses a brightness adjustment coefficient K L and brightness adjustment coefficient K L The brightness of the red subpixel 61, the green subpixel 62, and the blue subpixel 63 is adjusted based on the above.

[0038] Next, the display panel 40 adjusts the brightness by the brightness adjustment coefficient K LBased on the above, the details of adjusting the brightness of the red subpixel 61, the green subpixel 62, and the blue subpixel 63 will be further described. Figure 3B is a circuit diagram showing one of the red subpixel 61, the green subpixel 62, and the blue subpixel 63 (hereinafter referred to as the subpixel) according to an embodiment of the present invention. Figure 3C is a signal timing diagram corresponding to the subpixel according to an embodiment of the present invention.

[0039] 3B, the circuit structure of the subpixel may include a data writing transistor SW1, a driving transistor SW2, an emitting transistor SW3, and a light-emitting unit OD. The data writing transistor SW1 may include a first end a1, a second end a2, and a control end a3. The driving transistor SW2 may include a first end b1, a second end b2, and a control end b3. The emitting transistor SW3 may include a first end c1, a second end c2, and a control end c3. The light-emitting unit OD may include a first end d1 and a second end d2.

[0040] In one embodiment, the first terminal a1 of the data write transistor SW1 is connectable to a data line DL and is used to receive a data signal DN. The first terminal a2 of the data write transistor SW1 is connectable to a control terminal b3 of the drive transistor SW2. The control terminal a3 of the data write transistor SW1 is connectable to a scan line SL and is used to receive a scan signal SN. The first terminal b1 of the drive transistor SW2 is connectable to a high-voltage level signal VDD, and a capacitor C is connected between the second terminal a2 of the data write transistor SW1 and the first terminal b1 of the drive transistor SW2. st The second terminal b2 of the driving transistor SW2 can be connected to the first terminal c1 of the emission transistor SW3. The emission transistor SW3 is connected between the driving transistor SW2 and the light-emitting unit OD, and has a brightness adjustment coefficient K LFor example, the second end c2 of the emission transistor SW3 can be electrically connected to the first end d1 of the light-emitting unit OD, and the control end c3 of the emission transistor SW3 can be used to receive a control signal EM, which is a brightness adjustment coefficient K L The adjustment is performed based on the above, and the present invention is not limited thereto. The second end d2 of the light emitting unit OD can be electrically connected to a low voltage level signal voltage VEE.

[0041] 3B, the data write transistor SW1, the driving transistor SW2, and the discharge transistor SW3 are exemplified as PMOS structures. The above-mentioned transistors SW1 to SW3 are turned on when the signal received by the control terminal a3, b3, or c3 is at a low voltage level, and are turned off when the signal received by the control terminal a3, b3, or c3 is at a high voltage level, but the present invention is not limited thereto.

[0042] As shown in FIG. 3C, in one embodiment, the data write time (Data write ) the scanning signal SN is at a low voltage level, at which time the data write transistor SW1 is turned on, and the transistors SW2 and SW3 are turned off, so that the data write transistor SW1 receives the data signal DN. Then, under the influence of the data write transistor SW1, the driving transistor SW may be turned on. Then, in the discharging stage, the scanning signal SN is converted from a low voltage level to a high voltage level, so that the data write transistor SW1 is turned off, and the control signal EM received by the control end c3 of the discharging transistor SW3 is converted from a high voltage level to a low voltage level. This causes the discharging transistor SW3 to be turned on (this period is T EMonAt this time, a certain current determined by the data signal DN is transmitted to the light-emitting unit OD by the driving transistor SW2 and the emission transistor SW3, and the light-emitting unit OD emits light. When the control signal EM changes from a low voltage level to a high voltage level, the emission transistor SW3 is turned off (this period is T EMoff (marked as such).

[0043] Furthermore, in one embodiment, the brightness of the light emitted by the light emitting unit OD can be adjusted by adjusting the duty of the low voltage level period of the control signal EM in the frame time. L 3C, the low voltage level period of the control signal EM within the frame time is adjusted based on TEM on and the high voltage level period of the control signal EM within the frame time is denoted by TEM off and the low voltage level period TEM of the control signal EM on The length of time is T i and the control signal EM is expressed as the brightness adjustment coefficient K L The low voltage level period TEM after adjustment based on on The length of time is T k and the duration of the frame time is T f In one embodiment, the parameter of the duty cycle PWM of the control signal EM can satisfy the following condition: JPEG2025164759000002.jpg31143K L is the brightness adjustment coefficient, PWM is the duty cycle of the control signal EM, and PWM k is the brightness adjustment coefficient K L is the duty ratio of the control signal EM after adjusting it based on PWM i is the duty ratio of the initial control signal EM.

[0044] This will help understand the third embodiment.

[0045] (Fourth Example) The display device 1 according to the present invention may include different embodiments. Fig. 4A is a schematic diagram showing a display device 1 according to a fourth embodiment of the present invention. Since the description of the embodiment of Fig. 1A is generally applicable to the embodiment of Fig. 4A, the following description will mainly focus on the differences.

[0046] As shown in FIG. 4A , the display device 1 includes a color temperature sensor 10, a calculation unit 20, a gamma unit 30, a display panel 40, and a backlight unit 50. The calculation unit 20 is connected to the color temperature sensor 10. The display panel 40 is connected to the calculation unit 20 and the gamma unit 30. The calculation unit 20 may include a TRC conversion module 21, a color space conversion module 22, a white point conversion module 23, a color space inverse conversion module 24, and a TRC inverse conversion module 25. In addition, the calculation unit 20 may further include a color gamut conversion module 26. The display panel 40 may include a red subpixel 61, a green subpixel 62, a blue subpixel 63, and a driving unit 70. The color gamut conversion module 26 can be connected to the color temperature sensor 10.

[0047] In one embodiment, the display device 1 is used to display an image corresponding to original content, which may include a photograph, a painting, or an image, and the present invention is not limited thereto. Typically, the image of such original content may have a narrow or limited color gamut, for example, the colors of the original content may be unclear or the color range may be narrow. Therefore, the original image signal (R in , G in , B in ) indicates an image signal corresponding to the original content, the color space conversion module 22 converts the original image signal (R in , G in , B in) into a color space supported by the display panel 40. However, if the color space supported by the display panel 40 has a wide color gamut or too many colors, the color changes in the original content may not be accurately represented, and the color distribution of the image displayed on the display panel 40 may differ from that of the original content. In some embodiments, the signal after color space conversion is color gamut transformed (GCM) by the color gamut conversion module 26 to be converted into a color gamut corresponding to the image of the original content, for example, a color gamut with a narrow or limited color range. In some embodiments, the color gamut conversion module 26 may include target color gamut information of the original content under ambient light, although the present invention is not limited thereto. In this way, the calculation unit 20 calculates the original image signal (R ) based on the target color gamut information provided by the color gamut conversion module 26 and the target white point information output by the color temperature sensor 10. in , G in , B in ) is converted to an image signal (R out , G out , B out ) can be formed, and the color temperature and color distribution of the screen displayed on the display panel 40 can be made closer to the appearance of the actual original content (e.g., a real photograph, painting, or image) under ambient light.

[0048] Next, a detailed description will be given of the operation of the display device 1 and the arithmetic unit 20. Fig. 4B is a schematic diagram showing the arithmetic unit 20 of the display device according to the fourth embodiment of the present invention during an operation, and Fig. 4A should also be referenced at the same time.

[0049] As shown in FIGS. 4A and 4B, in one embodiment, a signal source (not shown) provides a raw image signal (R in , G in , B in) can be provided. The color temperature sensor 10 can detect the color temperature of the ambient light and output target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto). The calculation unit 20 can obtain corresponding color space information and the actual white point in the color space when a pure color screen is displayed on the display panel 40. Next, the TRC conversion module 21 converts the original image signal (R in , G in , B in ) to form first converted signals (R', G', B'). Then, the color space conversion module 22 can convert the first converted signals (R', G', B') to color points (X, Y, Z) of the corresponding color space of the display panel 40. Then, the white point conversion module 23 calculates three adjustment coefficients K corresponding to red, green, and blue based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto). R , K. G , K. B The white point conversion module 23 performs white point conversion (for example, used to search for the difference between the target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto) and the actual white point based on the target white point information (at least one of (X', Y', Z') and (CCT), and the present invention is not limited thereto) and calculates the three adjustment coefficients K corresponding to red, green, and blue in the conversion process. R , K. G , K. B , and brightness adjustment coefficient K L The calculation unit 20 then calculates the three adjustment coefficients K corresponding to red, green, and blue to the gamma unit 30. R , K. G , K. B and transmits the brightness adjustment coefficient K LThe color space inverse conversion module 24 and the TRC inverse conversion module 25 (see the previous embodiment) then convert the color points (not shown) into an image signal (R out , G out , B out ), and the calculation unit 20 converts the image signal (R out , G out , B out ) to the display panel 40. The gamma unit 30 can transmit the three adjustment coefficients K R , K. G , K. B The gamma curve provided to the driving unit 70 can be adjusted based on the image signal (R out , G out , B out ) and the gamma curve, the backlight unit 50 generates a data signal DN to be provided to the red sub-pixel 61, the green sub-pixel 62, and the blue sub-pixel 63, and the backlight unit 50 adjusts the brightness adjustment coefficient K L The brightness of the backlight is adjusted based on the

[0050] This will help understand the fourth embodiment.

[0051] (Fifth Example) The display device 1 according to the present invention may include different embodiments. Fig. 5 is a schematic diagram showing a display device 1 according to a fifth embodiment of the present invention. The description of the embodiment of Fig. 4A is generally applicable to the embodiment of Fig. 5, and the following description will mainly focus on differences.

[0052] As shown in FIG. 5 , the display device 1 may include a color temperature sensor 10, a calculation unit 20, a gamma unit 30, and a display panel 40. The calculation unit 20 may include a TRC conversion module 21, a color space conversion module 22, a white point conversion module 23, a color space inverse conversion module 24, a TRC inverse conversion module 25, and a color gamut conversion module 26. The display panel 40 may include a red subpixel 61, a green subpixel 62, and a blue subpixel 63, and the display panel 40 may be configured with a driving unit 70. In the example of FIG. 5 , the display panel 40 is a self-emissive display panel, i.e., the red subpixel 61, the green subpixel 62, and the blue subpixel 63 all include emissive units, and therefore may not include the backlight unit 50 of the previous embodiment.

[0053] The operation of the computation unit 20 will now be described with reference to Figures 4B and 5. In one embodiment, a signal source (not shown) provides the computation unit 20 with an original image signal (R in , G in , B in ) can be provided. The color temperature sensor 10 can detect the color temperature of the ambient light and output target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto). In addition, the calculation unit 20 can obtain corresponding color space information and the actual white point of the color space when a pure color screen is displayed on the display panel 40. Next, the TRC conversion module 21 converts the original image signal (R in , G in , B in ) to form first converted signals (R', G', B'). Then, the color space conversion module 22 converts the first converted signals (R', G', B') into color points (X, Y, Z) of the color space supported by the display panel 40. Then, the white point conversion module 23 generates three adjustment coefficients K corresponding to red, green, and blue based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto). R , K. G, K. B The white point conversion module 23 performs white point conversion on the actual white point based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto), and calculates the three adjustment coefficients K corresponding to red, green, and blue during the conversion process. R , K. G , K. B , and brightness adjustment coefficient K L Then, the calculation unit 20 outputs to the gamma unit 30 the three adjustment coefficients K corresponding to red, green, and blue. R , K. G , K. B and transmits the brightness adjustment coefficient K L Furthermore, the color gamut conversion module 26 performs color gamut conversion based on the target color gamut intrinsic points (X, Y, Z) to form color points (not shown) after the color gamut conversion. Next, the color space inverse conversion module 24 and the TRC inverse conversion module 25 operate to convert the color points after the color gamut conversion into an image signal (R out , G out , B out ), and the calculation unit 20 outputs the image signal (R out , G out , B out ) can be transmitted. The gamma unit 30 transmits the three adjustment factors K R , K. G , K. B The gamma curve provided to the driving unit 70 can be adjusted based on the image signal (R out , G out , B out ) and the gamma curve, the display panel 40 generates a data signal DN to be provided to the red sub-pixel 61, the green sub-pixel 62, and the blue sub-pixel 63, and the display panel 40 adjusts the brightness adjustment coefficient K L The brightness of the red subpixel 61, the green subpixel 62, and the blue subpixel 63 is adjusted based on the above.

[0054] In one embodiment, the circuit structure and brightness adjustment method of the red sub-pixel 61, the green sub-pixel 62, and the blue sub-pixel 63 can be applied to the description of FIGS. 3B and 3C, and therefore further description is omitted.

[0055] The fifth embodiment provides the same effect as the fourth embodiment and also has a self-illuminating function, so that the fifth embodiment can be understood.

[0056] The display device 1 according to the present invention may include different embodiments. Fig. 6A is a schematic diagram showing a display device 1 according to a sixth embodiment of the present invention. The description of the embodiment of Fig. 4A is generally applicable to the embodiment of Fig. 6A, and the following description will mainly focus on differences.

[0057] 6A , the display device 1 may include a color temperature sensor 10, a calculation unit 20, a gamma unit 30, a display panel 40, and a backlight unit 50. The calculation unit 20 may include a TRC conversion module 21, a color space conversion module 22, a white point conversion module 23, a color space inverse conversion module 24, and a color gamut conversion module 26. The display panel 40 may include a red subpixel 61, a green subpixel 62, and a blue subpixel 63, and the display panel 40 may be configured with a driving unit 70.

[0058] The operation of the computation unit 20 will now be described, with reference also to Figure 4B. As shown in Figures 6A and 6B, in one embodiment, a signal source (not shown) provides the computation unit 20 with an original image signal (R in , G in , B in ) can be provided. The color temperature sensor 10 can detect the color temperature of the ambient light and output target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto). In addition, the calculation unit 20 can obtain corresponding color space information and the actual white point of the color space when a pure color screen is displayed on the display panel 40. Next, the TRC conversion module 21 converts the original image signal (R in , Gin , B in ) to form first converted signals (R', G', B'). Then, a color space conversion module 22 can convert the first converted signals (R', G', B') to color points (X, Y, Z) of the color space supported by the display panel 40. Then, a white point conversion module 23 calculates three adjustment coefficients K corresponding to red, green, and blue based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto). R , K. G , K. B The white point conversion module 23 performs white point conversion for the actual white point based on the target white point information (at least one of (X', Y', Z') and (CCT), but the present invention is not limited thereto), and calculates the three adjustment coefficients K corresponding to red, green, and blue in the conversion process. R , K. G , K. B , and brightness adjustment coefficient K L Then, the calculation unit 20 outputs the three adjustment coefficients K corresponding to red, green, and blue to the gamma unit 30. R , K. G , K. B and transmits the brightness adjustment coefficient K L The color space conversion module 26 can convert the color points (X, Y, Z) into a gamut based on the target color gamut to form color points (not shown) after the color space conversion. Next, the color space inverse conversion module 24 converts the color points after the color space conversion into an image signal (R out , G out , B out ), and the calculation unit 20 outputs the image signal (R out , G out , B out ) directly. The gamma unit 30 directly transmits the three adjustment coefficients K R , K. G , K. BThe gamma curve provided to the driving unit 70 can be adjusted based on the image signal (R out , G out , B out ) and the gamma curve, the backlight unit 50 generates a data signal DN to be provided to the red sub-pixel 61, the green sub-pixel 62, and the blue sub-pixel 63, and the backlight unit 50 adjusts the brightness adjustment coefficient K L In one embodiment, the TRC inverse transform is performed by gamma unit 30 or display panel 40, and the invention is not limited thereto.

[0059] FIG. 6B is a gamma curve showing a display panel 40 according to an embodiment of the present invention, and corresponds to FIG. 6A. In this embodiment, the calculation unit 20 calculates the gamma curve of the image signal (R out , G out , B out ), the gamma curves corresponding to red, green, and blue are all linear. R , K. G , K. B Based on this, the gamma value of the gamma curve can be adjusted to one value, for example, the gamma value is 1, and the present invention is not limited thereto.

[0060] This will help understand the sixth embodiment.

[0061] (Seventh Example) The display device 1 according to the present invention may include different embodiments. Fig. 7 is a schematic diagram showing a display device 1 according to a seventh embodiment of the present invention. The description of the embodiment of Fig. 6A is generally applicable to the embodiment of Fig. 7, and the following description will mainly focus on differences.

[0062] 7, the display device 1 may include a color temperature sensor 10, a calculation unit 20, a gamma unit 30, and a display panel 40. The calculation unit 20 may include a TRC conversion module 21, a color space conversion module 22, a white point conversion module 23, a color space inverse conversion module 24, and a color gamut conversion module 26. The display panel 40 may include a red subpixel 61, a green subpixel 62, and a blue subpixel 63, and may be configured with a driving unit 70. The display panel 40 according to this embodiment is a self-luminous display panel.

[0063] The operation of the calculation unit 30 according to this embodiment generally refers to the description of the embodiment of FIG. 6A. This embodiment does not include a backlight unit 50, and the calculation unit 20 calculates the brightness adjustment coefficient K L and the display panel 40 can transmit a brightness adjustment coefficient K L 6A in that the brightness of the red subpixel 61, the green subpixel 62, and the blue subpixel 63 can be adjusted based on the

[0064] This allows the seventh embodiment to provide the same effect as the sixth embodiment and also have a self-illuminating function. This is how the seventh embodiment can be understood.

[0065] 8A to 8C are schematic diagrams illustrating color points (e.g., white points, but the present invention is not limited thereto) of a white screen displayed by a display device 1 according to an embodiment of the present invention under different color temperatures of ambient light. These diagrams should also be referenced to FIGS. 1 to 7C. In the examples of FIGS. 8A to 8C, the true color point of the ambient light (hereinafter referred to as the target color point) is labeled A, the color point displayed on the display device 1 when the calculation unit 20 executes the driving method is labeled B, and the color point displayed on the display device 1 when the calculation unit 20 does not execute the driving method is labeled C. Also, FIGS. 8A to 8C show the chromaticity difference between the color point of the ambient light and the color point displayed on the display device 1 using the CIE 1976 u'v' color space as an example.

[0066] 8A to 8C, in a situation where the color temperature of the ambient light is 2778K, 3995K, or 5871K, the position of the color point A of the ambient light in the color space is substantially close to the position of the color point B of the white screen displayed on the display device 1 (when the calculation unit 20 executes the driving method), and the position of the color point A is far from the position of the color point C of the white screen displayed on the display device 1 (when the calculation unit 20 does not execute the driving method). As can be seen from this, the difference in chromaticity between the color point A and the color point B is smaller than the difference in chromaticity between the color point A and the color point C.

[0067] In an embodiment, the chromaticity difference between color point A, color point B, and color point C can satisfy the following formula:

number

[0068] As a result, when the computing unit 20 executes the driving method, the color temperature of the screen displayed on the display panel 40 changes according to the color temperature of the ambient light, allowing the user to experience the same sensation as observing a real object under ambient light, enhancing the user's sense of immersion.

[0069] 9A to 9C are schematic diagrams illustrating color points (e.g., WRGB color points) of original content displayed by a display device 1 (displaying original content) according to an embodiment of the present invention under different color temperatures of ambient light. These diagrams are also shown in FIGS. 1 to 8C. In the examples of FIGS. 9A to 9C, the true color point of the original content under ambient light (hereinafter referred to as the target color point) is labeled D. The color point of a white screen displayed on the display device 1 when the computing unit 20 executes the driving method is labeled E. The color point of a white screen displayed on the display device 1 when the computing unit 20 does not execute the driving method is labeled F. The color gamut of the original content under ambient light is labeled R1. The color gamut provided by the display device 1 when the color gamut conversion module 26 is operating is labeled R2. The color gamut provided by the display device 1 when the color gamut conversion module 26 is not operating is labeled R3. 9A to 9C show the difference in chromaticity between the color point of the ambient light and the color point displayed on the display device 1, using the color space CIE1976u'v' as an example.

[0070] 9A to 9C , when the color temperature of the ambient light is 2778 K, 3995 K, or 5871 K, the position of the color point D of the ambient light in the color space is substantially close to the position of the color point E of the white screen displayed on the display device 1 (when the calculation unit 20 executes the driving method), and the position of the color point D is far from the position of the color point F of the white screen displayed on the display device 1 (when the calculation unit 20 does not execute the driving method). As can be seen from this, the difference in chromaticity between the color points D and E is smaller than the difference in chromaticity between the color points D and F. Furthermore, when the color gamut conversion module 26 operates, the color gamut R2 provided by the display device 1 is close to the color gamut R1 of the original content under ambient light. When the color gamut conversion module 26 does not operate, the color gamut R3 provided by the display device 1 is significantly different from the color gamut R1 of the original content under ambient light. As can be seen from this, when the color gamut conversion module 26 operates, the screen displayed on the display device 1 more closely resembles the appearance of the original content under ambient light.

[0071] In an embodiment, the chromaticity difference between color point D, color point E, and color point F can satisfy the following formula:

number

[0072] As a result, when the computing unit 20 executes the driving method, the color temperature of the screen displayed on the display panel 40 changes according to the color temperature of the ambient light, and the color of the screen resembles the appearance of a real object under the ambient light, allowing the user to experience the same sensation as observing a real object under the ambient light, enhancing the user's sense of immersion.

[0073] Furthermore, the display panel 40 according to the present invention is combined with a special optical structure layer to improve the display quality. Fig. 10A is a schematic diagram showing the configuration of a display device 1 according to an embodiment of the present invention, and Figs. 1 to 9C should also be referenced.

[0074] 10A , the structure of the display device 1 may include a display panel 40 and an optical structure layer 80, where the optical structure layer 80 includes a protective layer 81, an anti-glare layer 82, and an anti-reflection layer 83. In the Y direction, the protective layer 81 is disposed on the display panel 40, the anti-glare layer 82 is disposed on the protective layer 81, and the anti-reflection layer 83 is disposed on the anti-glare layer 82. The protective layer 81 is, for example, a glass cover, but the present invention is not limited thereto. By appropriately combining the display panel 40, the protective layer 81, the anti-glare layer 82, and the anti-reflection layer 83, the display device 1 can provide a paper-like display effect or significantly reduce reflected light and glare.

[0075] In one embodiment, the anti-glare layer 82 and the glass cover (protective layer 81) form an anti-glare glass, and the glossiness of the anti-glare glass may be in the range of 10 to 50 GU (gloss unit), i.e., 10 GU≦glossiness of anti-glare glass≦50 GU, but the present invention is not limited thereto. In one embodiment, the transmittance of the anti-glare glass may be 90 percent (%) or more, i.e., 90%≦transmittance of anti-glare glass, but the present invention is not limited thereto.

[0076] In one embodiment, the glossiness of the optical structure layer 80, which is formed by the glass cover (protective layer 81), the anti-glare layer 82, and the anti-reflection layer 83, may be in the range of 4 to 35 GU, i.e., 4 GU≦glossiness of the optical structure layer 80≦35 GU. In another embodiment, the glossiness of the optical structure layer 80 may be in the range of 4 to 30 GU, i.e., 4 GU≦glossiness of the optical structure layer 80≦30 GU. In another embodiment, the glossiness of the optical structure layer 80 may be in the range of 4 to 20 GU, i.e., 4 GU≦glossiness of the optical structure layer 80≦20 GU. The present invention is not limited thereto. In another embodiment, the transmittance of the optical structure layer 80 may be in the range of 70 to 95%, i.e., 70%≦transmittance of the optical structure layer 80≦95%. In another embodiment, the reflectivity of the optical structure layer 80 may be 6% or less, i.e., 6%≦reflectivity of the optical structure layer 80. In some embodiments, the specular component included (SCI) reflectance of the optical structure layer 80 may be in the range of 3-6%, i.e., 3%≦SCI reflectance of the optical structure layer 80≦6%. In some embodiments, the specular component included reflectance of the optical structure layer 80 may be in the range of 4-6%, i.e., 4%≦SCI reflectance of the optical structure layer 80≦6%, but the present invention is not limited thereto.

[0077] In one embodiment, the display panel 40 and the optical structure layer 80 may form a display module, whose glossiness may be 10GU or less, i.e., 10GU≧the glossiness of the display module, e.g., 5GU. In one embodiment, the SCI reflectance of the display module may be 3% or less, i.e., 3%≧the SCI reflectance of the display module. In one embodiment, the specular component excluded (SCE) reflectance of the display module may be 0.6 times or more the SCI reflectance, i.e., the SCE reflectance of the display module≧0.6*the SCI reflectance of the display module. In this way, the reflected light of the display device 100 may be reduced, thereby improving the visual quality.

[0078] In some embodiments, the display device 1 may be a bendable or flexible electronic device and may be non-self-luminous or self-luminous. The display device 1 may include a light-emitting unit such as an organic light-emitting diode (OLED), a mini LED, a micro LED, or a quantum dot LED, and the present invention is not limited thereto. The display technology of the display module may include liquid crystal (LCD), OLED, mini LED, micro LED, cholesteric liquid crystal display (ChlLCD), or electrophoretic display (EPD), etc. Depending on the type of display technology, the display device 1 may or may not include a backlight module 50, and the present invention is not limited thereto. In one embodiment, the chip size of a light emitting diode (LED) ranges between about 300 μm and 10 mm (i.e., 300 μm≦size≦10 mm), the chip size of a mini LED ranges between about 100 μm and 300 μm (i.e., 100 μm≦size≦300 μm), and the chip size of a Micro LED ranges between about 1 μm and 100 μm (i.e., 1 μm≦size≦100 μm), but the present invention is not limited thereto.

[0079] Fig. 10B is a schematic diagram showing the configuration of a display device 1 according to another embodiment of the present invention, and Figs. 1A to 10A should also be referenced. The embodiment of Fig. 10B generally applies the same description as for the embodiment of Fig. 10A, and therefore, the following description will mainly focus on the differences.

[0080] As shown in FIG. 10B , the protective layer 81 of the optical structure layer 80 is, for example, a cover film, but the present invention is not limited thereto. In some embodiments, the anti-glare layer 82 and the cover film (protective layer 81) may form an anti-glare film. The glossiness of the anti-glare film may be in the range of 10 to 50 GU, i.e., 10 GU≦glossiness of the anti-glare film≦50 GU, but the present invention is not limited thereto. In some embodiments, the transmittance of the anti-glare film may be 90 percent (%) or more, i.e., 90%≦transmittance of the anti-glare film, but the present invention is not limited thereto. In the embodiment of FIG. 10B , the glossiness, transmittance, reflectance, and reflectance including specular reflection of the optical structure layer 80 are the same as those described in the embodiment of FIG. 10A . In addition, the glossiness, SCI reflectance, and SCE reflectance of the display module formed by the display panel 40 and the optical structure layer 80 are the same as those described in the embodiment of FIG. 10A .

[0081] Fig. 10C is a schematic diagram showing a display device 1 according to yet another embodiment of the present invention, and Figs. 1A to 10B should also be referenced. The embodiment of Fig. 10C generally applies the same description as for the embodiment of Fig. 10A, and therefore, the following description will mainly focus on differences.

[0082] As shown in FIG. 10C , the protective layer 81 of the optical structure layer 80 may be, for example, a polarizer, although the present invention is not limited thereto. In one embodiment, the anti-glare layer 82 and the polarizer (protective layer 81) may form an anti-glare polarizer, and the glossiness of the anti-glare polarizer may be in the range of 10 to 50 GU, i.e., 10 GU≦glossiness of anti-glare polarizer≦50 GU, although the present invention is not limited thereto. In one embodiment, the transmittance of the anti-glare polarizer is in the range of 45 to 60% or greater, i.e., 45%≦transmittance of anti-glare polarizer≦60%, although the present invention is not limited thereto. In the example of FIG. 10C , the glossiness, transmittance, reflectance, and reflectance including specular reflection of the optical structure layer 80 are the same as those described in the example of FIG. 10A . Furthermore, the glossiness, SCI reflectance, or SCE reflectance of the display module formed by the display panel 40 and the optical structure layer 80 can be applied to the description of the embodiment of FIG. 10A.

[0083] Next, the protective layer 81 and the anti-glare layer 82 will be described in detail. Fig. 11A is a schematic diagram showing the protective layer 81 according to one embodiment of the present invention, and Fig. 11B is a schematic diagram showing the anti-glare layer 82 according to one embodiment of the present invention, and Figs. 1A to 10C will also be referred to. Figs. 11A and 11B are used to explain the details of how anti-glare glass is formed by the protective layer 81 and the anti-glare layer 82 in the form of a glass cover.

[0084] As shown in FIG. 11A , in one embodiment, the anti-glare layer 82 is applied to the glass cover (protective layer 81) by spray coating. In one embodiment, the "spray coating" method involves, for example, applying a specific solution for forming the anti-glare layer 82 to the surface of the glass cover (protective layer 81), forming a raised structure on the surface, and then curing the specific solution and the glass cover (protective layer 81) at high temperature to form an anti-glare glass having the anti-glare layer 82. In one embodiment, the specific solution is, for example, silicon dioxide (SiO2), but the present invention is not limited thereto. In another embodiment, the anti-glare layer 82 formed by spray coating has a plurality of raised structures, and the width w1 of each raised structure (e.g., the distance between the peaks or valleys of each raised structure) may be in the range of 5 to 20 μm, i.e., 5 μm≦w1≦20 μm, but the present invention is not limited thereto. In one embodiment, the height h1 of each raised structure in the Y direction may be in the range of 0.1 to 0.5 μm, i.e., 0.1 μm≦h1≦0.5 μm, but the present invention is not limited thereto, so that the anti-glare layer 82 can provide a good anti-glare effect.

[0085] As shown in FIG. 11B , in one embodiment, the surface of the glass cover (protective layer 81) is roughened by etching, creating an effect similar to that of the anti-glare layer 82. In one embodiment, the "etching" involves, for example, using an acidic substance to corrode a film layer on the surface of the glass cover (protective layer 81), creating depressions in the film layer, thereby forming an anti-glare glass with an effect (depressions) similar to that of the anti-glare layer 82. As can be seen, the structure of the embodiment of FIG. 11B achieves an effect similar to that of the anti-glare layer 82 by etching the protective layer 81, and does not require the anti-glare layer 82 to be actually provided. In one embodiment, the surface of the protective layer 81 is roughened by etching, resulting in a plurality of depressions. The width w2 of each depression (e.g., the distance between the peaks or valleys of each depression) may be in the range of 5 to 20 μm, i.e., 5 μm≦w2≦20 μm, but the present invention is not limited thereto. In one embodiment, the depth h2 of each recessed structure in the Y direction may be in the range of 0.1 to 0.5 μm, i.e., 0.1 μm≦h2≦0.5 μm, but the present invention is not limited thereto, so that the surface of the protective layer 81 can provide an anti-glare effect similar to that of the anti-glare layer 82.

[0086] Fig. 11C is a schematic diagram showing a protective layer 81 according to another embodiment of the present invention, and Fig. 11D is a schematic diagram showing an anti-glare layer 82 according to another embodiment of the present invention, and Figs. 1A to 11B are also referred to. Figs. 11C and 11D are used to explain the details of how an anti-glare film is formed by a cover film (protective layer 81) and an anti-glare layer 82.

[0087] 11C , in one embodiment, the cover film (protective layer 81) has a hard coat layer 811, and the anti-glare layer 82 is formed by mixing specific particulate matter 812 into the hard coat layer 811 to create raised and depressed structures. In one embodiment, the hard coat layer 811 has a maximum thickness h3 after the raised and depressed structures are created, and the maximum thickness h3 may be in the range of 1 to 3 μm, i.e., 1 μm≦h3≦3 μm, although the present invention is not limited thereto. In one embodiment, the type of specific particulate matter 812 includes, for example, silicon dioxide particles, although the present invention is not limited thereto.

[0088] 11D, in one embodiment, the cover film (protective layer 81) may have a hard coat layer 811, and the anti-glare layer 82 is formed by applying nanoimprint technology to the hard coat layer 811 to generate recessed structures in the hard coat layer 811. In one embodiment, the hard coat layer 811 has a maximum thickness h4 after the recessed structures are generated, and the maximum thickness h4 may be in the range of 1 to 3 μm, i.e., 1 μm≦h4≦3 μm, but the present invention is not limited thereto.

[0089] Next, the anti-reflection layer 83 will be described in detail. See FIGS. 10A to 10C. In one embodiment, the anti-reflection layer 83 is formed by plating multiple film layers with different refractive indices on the surface of the anti-glare layer 82 using a physical vapor deposition (PVD) technique. In one embodiment, the anti-reflection layer 83 may include multiple high-refractive-index sublayers and multiple low-refractive-index sublayers, where the high-refractive-index sublayers and the low-refractive-index sublayers are alternately stacked, but the present invention is not limited thereto. The high-refractive-index sublayers or the low-refractive-index sublayers may include metal oxides or dielectric materials, but the present invention is not limited thereto. In one embodiment, the outermost sublayer of the anti-reflection layer 83 in the viewing direction is a low-refractive-index sublayer, but the present invention is not limited thereto. In one embodiment, the total number of high-refractive-index sublayers and low-refractive-index sublayers is at least four, but the present invention is not limited thereto. In one embodiment, the refractive index of the high-index sublayer is higher than that of the low-index sublayer, for example, the refractive index of the high-index sublayer may be in the range of 1.9 to 2.4, i.e., 1.9≦the refractive index of the high-index sublayer≦2.4, and the refractive index of the low-index sublayer may be in the range of 1.2 to 1.5, i.e., 1.2≦the refractive index of the low-index sublayer≦1.5, but the present invention is not limited thereto.

[0090] In some embodiments, the anti-reflection layer 83 may be a non-smoke anti-reflection layer (non-smoke AR). In some embodiments, the high refractive index sub-layer of the non-smoke anti-reflection layer may include niobium pentoxide (Nb2O5), but the present invention is not limited thereto. The low refractive index sub-layer of the non-smoke anti-reflection layer may include silicon dioxide (SiO2), but the present invention is not limited thereto. In some embodiments, the sub-layer arrangement of the anti-reflection layer 33 having the non-smoke anti-reflection layer configuration is shown in Table 1. Please note that the parameters and sub-layer quantities in Table 1 are for illustrative purposes only. [Table 1]

[0091] In another embodiment, the anti-reflection layer 83 may be a smoke anti-reflection layer (smoke AR). In one embodiment, the material of the high-refractive index sublayer of the smoke anti-reflection layer may include a transparent conductive film (indium tin oxide, ITO), but the present invention is not limited thereto. In one embodiment, the material of the low-refractive index sublayer of the smoke anti-reflection layer may include silicon dioxide, but the present invention is not limited thereto. In one embodiment, the high-refractive index sublayer of the smoke anti-reflection layer has an extinction coefficient k, which may be in the range of 0.01 to 0.05, i.e., 0.01≦k≦0.05, but the present invention is not limited thereto. In addition, the low-refractive index sublayer has substantially no light-absorbing properties. In one embodiment, the sublayer arrangement of the anti-reflection layer 83 (smoke anti-reflection layer) is shown in Table 2. Please note that the parameters and the number of sublayers in Table 2 are for illustrative purposes only. [Table 2]

[0092] In addition, in some embodiments, the reflectance of the anti-reflection layer 83 may be in the range of 3 to 6 percent, i.e., 3%≦reflectance of the anti-reflection layer 83≦6%, and the present invention is not limited thereto. In some embodiments, the total thickness of the anti-reflection layer 83 in the Y direction may be in the range of 200 to 700 nanometers, i.e., 200 nm≦total thickness of the anti-reflection layer 83≦700 nm, and the present invention is not limited thereto.

[0093] Next, the backlight unit 50 or the self-luminous display module (self-luminous display panel 40 and optical structure layer 80) according to the present invention will be described in detail.

[0094] In some embodiments, the backlight unit 50 may include multiple diffusion sheets and light guide plates, and the diffusion sheets may be disposed on the light guide plates in the Y direction, but the present invention is not limited thereto. In some embodiments, the number of diffusion sheets in the backlight unit 50 is at least two, but the present invention is not limited thereto. In some embodiments, no other optical film layer is disposed between the upper diffusion sheet and the lower diffusion sheet. In some embodiments, a brightness enhancement film may be disposed above the diffusion sheets in the Y direction, and the brightness enhancement film may be, for example, a dual brightness enhancement film (DBEF), but the present invention is not limited thereto.

[0095] In one embodiment, the full width at half maximum (FWHM) of the brightness of the backlight unit 50 or the self-luminous display module corresponding to the viewing angle is greater than 40 degrees, i.e., 40 o ≦FWHM, for example, 45 degrees, and the invention is not limited thereto. As used herein, "full width at half maximum" refers to the angular difference between the viewing angle at which the brightness is half the maximum brightness and a viewing angle of 0 degrees.

[0096] In this way, the detailed features of the structure of the display device 1 according to the present invention can be understood. Note that the numerical values ​​or sizes, the outlines of each layer, the transistor structure, the circuit layout, etc., mentioned in the above description are merely examples, and the present invention is not limited thereto.

[0097] In some embodiments, the present invention determines whether the disputed product falls within the scope of protection of the present invention based at least on the presence or absence of components, the arrangement of components, observation of the mechanism, and / or the operating method of the disputed product, and the present invention is not limited thereto.

[0098] Although the embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like are also included within the scope that does not deviate from the gist of the present invention. [Explanation of symbols]

[0099] 1 Display device 2 Processing Unit 3 Display Unit 10 Color Temperature Sensor 20 computing units 21 Tone Reproduction Curve (TRC) Conversion Module 22 Color Space Conversion Module 23 White Point Conversion Module 24 Color space inverse conversion module 25 TRC inverse conversion module 26 Color Gamut Conversion Module 30 Gamma Unit 40 Display Panel 50 Backlight Unit 61 red subpixels 62 green subpixels 63 Blue subpixel 70 Drive Unit 80 Optical structure layer 81 Protective layer 82 Anti-glare layer 83 Anti-reflection layer DN Data Signal (X, Y, Z) Red color space information (X, Y, Z) Red (X, Y, Z) Green color space information (X, Y, Z) Green (X, Y, Z) Blue Color space information (X, Y, Z) Blue (X, Y, Z) White color space information (X, Y, Z) White Rin Original image signal Gin Original image signal Bin Original image signal ((X', Y', Z') Target white point information (CCT) Color temperature KR adjustment coefficient KG adjustment factor KB Adjustment Factor R First conversion signal G First conversion signal B First conversion signal (X, Y, Z) color point (X'', Y'', Z) First conversion color point R'' second conversion color point G'' second conversion color point B'' second conversion color point Rout image signal Gout image signal Bout image signal KL Brightness adjustment coefficient SW1 Data write transistor SW2 drive transistor SW3 emission transistor OD light emitting unit a1 1st end b1 1st end c1 1st end d1 1st end a2 2nd end b2 2nd end c2 2nd end d2 2nd end a3 Control end b3 Control end c3 Control end DL data line SL Scan Line SN Scan signal VDD High voltage level signal Cst capacitor EM Control Signal VEE Low voltage level signal voltage Datawrite Data write time frame frame time TEMon period TEmoff period Ti Length of time Tk Length of Time Tf length of time A color point B color point C color point D color point E color point F color point R1 color gamut R2 color gamut R3 color gamut w1 width w2 width h1 height h2 height h3 height h4 height

Claims

1. a color temperature sensor for detecting the color temperature of the ambient light and outputting target white point information; a calculation unit connected to the color temperature sensor, for calculating three adjustment coefficients corresponding to red, green, and blue based on the target white point information; a gamma unit connected to the arithmetic unit, for receiving the three adjustment coefficients and adjusting gamma curves corresponding to red, green, and blue; a display panel including red, green, and blue subpixels, the gamma unit being connected to the display panel for receiving image signals, the display panel providing data signals corresponding to the red, green, and blue subpixels based on the gamma curves corresponding to red, green, and blue.

2. 2. The display device according to claim 1, further comprising a backlight unit, wherein the calculation unit calculates a brightness adjustment coefficient based on the target white point information, and the backlight unit receives the brightness adjustment coefficient and adjusts the brightness of the backlight provided to the display panel.

3. 2. The display device according to claim 1, wherein the display device is used to display an image corresponding to original content, the arithmetic unit further comprises a color gamut conversion module including a target color gamut of the original content under ambient light, the color temperature sensor is connected to the color gamut conversion module, and the arithmetic unit receives an original image signal and converts the original image signal into the image signal based on the target color gamut.

4. The display device according to claim 3 , wherein the original content includes a photograph, a painting, or an image.

5. 2. The display device according to claim 1, wherein the calculation unit is used to calculate a brightness adjustment coefficient based on the target white point information, and the display panel receives the brightness adjustment coefficient and adjusts the brightness of the red sub-pixel, the green sub-pixel, and the blue sub-pixel.

6. 6. The display device of claim 5, wherein each of the red, green, and blue sub-pixels comprises a driving transistor, an emission transistor, and a light-emitting unit, the emission transistor being connected between the driving transistor and the light-emitting unit, and the emission transistor being used to receive the brightness adjustment coefficient.

7. 2. The display device of claim 1, further comprising an optical structure layer including a protective layer, an anti-glare layer, and an anti-reflection layer, wherein the protective layer is disposed on the display panel, the anti-glare layer is disposed on the protective layer, and the anti-reflection layer is disposed on the anti-glare layer.

8. 8. The display device according to claim 7, wherein the glossiness of the optical structure layer is in the range of 4 to 35 GU.

9. 8. The display device according to claim 7, wherein the transmittance of the optical structure layer is in the range of 70 to 95%.

10. 8. The display device according to claim 7, wherein the anti-glare layer and the protective layer form an anti-glare glass, and the glossiness of the anti-glare glass ranges from 10 to 50 GU.

Images